392 files changed, 12961 insertions, 6922 deletions

diff --git a/Documentation/crypto/async-tx-api.txt b/Documentation/crypto/async-tx-api.txt
index c1e9545c59bd..9f59fcbf5d82 100644
--- a/Documentation/crypto/async-tx-api.txt
+++ b/Documentation/crypto/async-tx-api.txt
@@ -13,9 +13,9 @@
 3.6 Constraints
 3.7 Example
 
-4 DRIVER DEVELOPER NOTES
+4 DMAENGINE DRIVER DEVELOPER NOTES
 4.1 Conformance points
-4.2 "My application needs finer control of hardware channels"
+4.2 "My application needs exclusive control of hardware channels"
 
 5 SOURCE
 
@@ -150,6 +150,7 @@ ops_run_* and ops_complete_* routines in drivers/md/raid5.c for more
 implementation examples.
 
 4 DRIVER DEVELOPMENT NOTES
+
 4.1 Conformance points:
 There are a few conformance points required in dmaengine drivers to
 accommodate assumptions made by applications using the async_tx API:
@@ -158,58 +159,49 @@ accommodate assumptions made by applications using the async_tx API:
 3/ Use async_tx_run_dependencies() in the descriptor clean up path to
    handle submission of dependent operations
 
-4.2 "My application needs finer control of hardware channels"
-This requirement seems to arise from cases where a DMA engine driver is
-trying to support device-to-memory DMA.  The dmaengine and async_tx
-implementations were designed for offloading memory-to-memory
-operations; however, there are some capabilities of the dmaengine layer
-that can be used for platform-specific channel management.
-Platform-specific constraints can be handled by registering the
-application as a 'dma_client' and implementing a 'dma_event_callback' to
-apply a filter to the available channels in the system.  Before showing
-how to implement a custom dma_event callback some background of
-dmaengine's client support is required.
-
-The following routines in dmaengine support multiple clients requesting
-use of a channel:
-- dma_async_client_register(struct dma_client *client)
-- dma_async_client_chan_request(struct dma_client *client)
-
-dma_async_client_register takes a pointer to an initialized dma_client
-structure.  It expects that the 'event_callback' and 'cap_mask' fields
-are already initialized.
-
-dma_async_client_chan_request triggers dmaengine to notify the client of
-all channels that satisfy the capability mask.  It is up to the client's
-event_callback routine to track how many channels the client needs and
-how many it is currently using.  The dma_event_callback routine returns a
-dma_state_client code to let dmaengine know the status of the
-allocation.
-
-Below is the example of how to extend this functionality for
-platform-specific filtering of the available channels beyond the
-standard capability mask:
-
-static enum dma_state_client
-my_dma_client_callback(struct dma_client *client,
-                        struct dma_chan *chan, enum dma_state state)
-{
-        struct dma_device *dma_dev;
-        struct my_platform_specific_dma *plat_dma_dev;
-        
-        dma_dev = chan->device;
-        plat_dma_dev = container_of(dma_dev,
-                                    struct my_platform_specific_dma,
-                                    dma_dev);
-
-        if (!plat_dma_dev->platform_specific_capability)
-                return DMA_DUP;
-
-        . . .
-}
+4.2 "My application needs exclusive control of hardware channels"
+Primarily this requirement arises from cases where a DMA engine driver
+is being used to support device-to-memory operations.  A channel that is
+performing these operations cannot, for many platform specific reasons,
+be shared.  For these cases the dma_request_channel() interface is
+provided.
+
+The interface is:
+struct dma_chan *dma_request_channel(dma_cap_mask_t mask,
+                                     dma_filter_fn filter_fn,
+                                     void *filter_param);
+
+Where dma_filter_fn is defined as:
+typedef bool (*dma_filter_fn)(struct dma_chan *chan, void *filter_param);
+
+When the optional 'filter_fn' parameter is set to NULL
+dma_request_channel simply returns the first channel that satisfies the
+capability mask.  Otherwise, when the mask parameter is insufficient for
+specifying the necessary channel, the filter_fn routine can be used to
+disposition the available channels in the system. The filter_fn routine
+is called once for each free channel in the system.  Upon seeing a
+suitable channel filter_fn returns DMA_ACK which flags that channel to
+be the return value from dma_request_channel.  A channel allocated via
+this interface is exclusive to the caller, until dma_release_channel()
+is called.
+
+The DMA_PRIVATE capability flag is used to tag dma devices that should
+not be used by the general-purpose allocator.  It can be set at
+initialization time if it is known that a channel will always be
+private.  Alternatively, it is set when dma_request_channel() finds an
+unused "public" channel.
+
+A couple caveats to note when implementing a driver and consumer:
+1/ Once a channel has been privately allocated it will no longer be
+   considered by the general-purpose allocator even after a call to
+   dma_release_channel().
+2/ Since capabilities are specified at the device level a dma_device
+   with multiple channels will either have all channels public, or all
+   channels private.
 
 5 SOURCE
-include/linux/dmaengine.h: core header file for DMA drivers and clients
+
+include/linux/dmaengine.h: core header file for DMA drivers and api users
 drivers/dma/dmaengine.c: offload engine channel management routines
 drivers/dma/: location for offload engine drivers
 include/linux/async_tx.h: core header file for the async_tx api
diff --git a/Documentation/dmaengine.txt b/Documentation/dmaengine.txt
new file mode 100644
index 000000000000..0c1c2f63c0a9
--- /dev/null
+++ b/Documentation/dmaengine.txt
@@ -0,0 +1 @@
+See Documentation/crypto/async-tx-api.txt
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index fb849020aea9..fcc48bf722a8 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -141,6 +141,7 @@ and is between 256 and 4096 characters. It is defined in the file
                         ht -- run only enough ACPI to enable Hyper Threading
                         strict -- Be less tolerant of platforms that are not
                                 strictly ACPI specification compliant.
+                        rsdt -- prefer RSDT over (default) XSDT
 
                         See also Documentation/power/pm.txt, pci=noacpi
 
@@ -151,16 +152,20 @@ and is between 256 and 4096 characters. It is defined in the file
                         default: 0
 
         acpi_sleep=     [HW,ACPI] Sleep options
-                        Format: { s3_bios, s3_mode, s3_beep, s4_nohwsig, old_ordering }
-                        See Documentation/power/video.txt for s3_bios and s3_mode.
+                        Format: { s3_bios, s3_mode, s3_beep, s4_nohwsig,
+                                  old_ordering, s4_nonvs }
+                        See Documentation/power/video.txt for information on
+                        s3_bios and s3_mode.
                         s3_beep is for debugging; it makes the PC's speaker beep
                         as soon as the kernel's real-mode entry point is called.
                         s4_nohwsig prevents ACPI hardware signature from being
                         used during resume from hibernation.
                         old_ordering causes the ACPI 1.0 ordering of the _PTS
-                        control method, wrt putting devices into low power
-                        states, to be enforced (the ACPI 2.0 ordering of _PTS is
-                        used by default).
+                        control method, with respect to putting devices into
+                        low power states, to be enforced (the ACPI 2.0 ordering
+                        of _PTS is used by default).
+                        s4_nonvs prevents the kernel from saving/restoring the
+                        ACPI NVS memory during hibernation.
 
         acpi_sci=       [HW,ACPI] ACPI System Control Interrupt trigger mode
                         Format: { level | edge | high | low }
@@ -195,7 +200,7 @@ and is between 256 and 4096 characters. It is defined in the file
         acpi_skip_timer_override [HW,ACPI]
                         Recognize and ignore IRQ0/pin2 Interrupt Override.
                         For broken nForce2 BIOS resulting in XT-PIC timer.
-        acpi_use_timer_override [HW,ACPI}
+        acpi_use_timer_override [HW,ACPI]
                         Use timer override. For some broken Nvidia NF5 boards
                         that require a timer override, but don't have
                         HPET
@@ -878,17 +883,19 @@ and is between 256 and 4096 characters. It is defined in the file
                         See Documentation/ide/ide.txt.
 
         idle=           [X86]
-                        Format: idle=poll or idle=mwait, idle=halt, idle=nomwait
-                        Poll forces a polling idle loop that can slightly improves the performance
-                        of waking up a idle CPU, but will use a lot of power and make the system
-                        run hot. Not recommended.
-                        idle=mwait. On systems which support MONITOR/MWAIT but the kernel chose
-                        to not use it because it doesn't save as much power as a normal idle
-                        loop use the MONITOR/MWAIT idle loop anyways. Performance should be the same
-                        as idle=poll.
-                        idle=halt. Halt is forced to be used for CPU idle.
+                        Format: idle=poll, idle=mwait, idle=halt, idle=nomwait
+                        Poll forces a polling idle loop that can slightly
+                        improve the performance of waking up a idle CPU, but
+                        will use a lot of power and make the system run hot.
+                        Not recommended.
+                        idle=mwait: On systems which support MONITOR/MWAIT but
+                        the kernel chose to not use it because it doesn't save
+                        as much power as a normal idle loop, use the
+                        MONITOR/MWAIT idle loop anyways. Performance should be
+                        the same as idle=poll.
+                        idle=halt: Halt is forced to be used for CPU idle.
                         In such case C2/C3 won't be used again.
-                        idle=nomwait. Disable mwait for CPU C-states
+                        idle=nomwait: Disable mwait for CPU C-states
 
         ide-pci-generic.all-generic-ide [HW] (E)IDE subsystem
                         Claim all unknown PCI IDE storage controllers.
@@ -1074,8 +1081,8 @@ and is between 256 and 4096 characters. It is defined in the file
         lapic           [X86-32,APIC] Enable the local APIC even if BIOS
                         disabled it.
 
-        lapic_timer_c2_ok       [X86-32,x86-64,APIC] trust the local apic timer in
-                        C2 power state.
+        lapic_timer_c2_ok       [X86-32,x86-64,APIC] trust the local apic timer
+                        in C2 power state.
 
         libata.dma=     [LIBATA] DMA control
                         libata.dma=0      Disable all PATA and SATA DMA
@@ -2303,7 +2310,8 @@ and is between 256 and 4096 characters. It is defined in the file
 
         thermal.psv=    [HW,ACPI]
                         -1: disable all passive trip points
-                        <degrees C>: override all passive trip points to this value
+                        <degrees C>: override all passive trip points to this
+                        value
 
         thermal.tzp=    [HW,ACPI]
                         Specify global default ACPI thermal zone polling rate
diff --git a/Documentation/powerpc/dts-bindings/4xx/ndfc.txt b/Documentation/powerpc/dts-bindings/4xx/ndfc.txt
new file mode 100644
index 000000000000..869f0b5f16e8
--- /dev/null
+++ b/Documentation/powerpc/dts-bindings/4xx/ndfc.txt
@@ -0,0 +1,39 @@
+AMCC NDFC (NanD Flash Controller)
+
+Required properties:
+- compatible : "ibm,ndfc".
+- reg : should specify chip select and size used for the chip (0x2000).
+
+Optional properties:
+- ccr : NDFC config and control register value (default 0).
+- bank-settings : NDFC bank configuration register value (default 0).
+
+Notes:
+- partition(s) - follows the OF MTD standard for partitions
+
+Example:
+
+ndfc@1,0 {
+        compatible = "ibm,ndfc";
+        reg = <0x00000001 0x00000000 0x00002000>;
+        ccr = <0x00001000>;
+        bank-settings = <0x80002222>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        nand {
+                #address-cells = <1>;
+                #size-cells = <1>;
+
+                partition@0 {
+                        label = "kernel";
+                        reg = <0x00000000 0x00200000>;
+                };
+                partition@200000 {
+                        label = "root";
+                        reg = <0x00200000 0x03E00000>;
+                };
+        };
+};
+
+
diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c
index c5e28a46b292..a8d91b6c136b 100644
--- a/arch/arm/mach-pxa/corgi.c
+++ b/arch/arm/mach-pxa/corgi.c
@@ -27,6 +27,7 @@
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
 #include <linux/spi/corgi_lcd.h>
+#include <linux/mtd/sharpsl.h>
 #include <video/w100fb.h>
 
 #include <asm/setup.h>
@@ -542,6 +543,55 @@ err_free_1:
 static inline void corgi_init_spi(void) {}
 #endif
 
+static struct mtd_partition sharpsl_nand_partitions[] = {
+        {
+                .name = "System Area",
+                .offset = 0,
+                .size = 7 * 1024 * 1024,
+        },
+        {
+                .name = "Root Filesystem",
+                .offset = 7 * 1024 * 1024,
+                .size = 25 * 1024 * 1024,
+        },
+        {
+                .name = "Home Filesystem",
+                .offset = MTDPART_OFS_APPEND,
+                .size = MTDPART_SIZ_FULL,
+        },
+};
+
+static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
+
+static struct nand_bbt_descr sharpsl_bbt = {
+        .options = 0,
+        .offs = 4,
+        .len = 2,
+        .pattern = scan_ff_pattern
+};
+
+static struct sharpsl_nand_platform_data sharpsl_nand_platform_data = {
+        .badblock_pattern       = &sharpsl_bbt,
+        .partitions             = sharpsl_nand_partitions,
+        .nr_partitions          = ARRAY_SIZE(sharpsl_nand_partitions),
+};
+
+static struct resource sharpsl_nand_resources[] = {
+        {
+                .start  = 0x0C000000,
+                .end    = 0x0C000FFF,
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+static struct platform_device sharpsl_nand_device = {
+        .name           = "sharpsl-nand",
+        .id             = -1,
+        .resource       = sharpsl_nand_resources,
+        .num_resources  = ARRAY_SIZE(sharpsl_nand_resources),
+        .dev.platform_data      = &sharpsl_nand_platform_data,
+};
+
 static struct mtd_partition sharpsl_rom_parts[] = {
         {
                 .name   ="Boot PROM Filesystem",
@@ -577,6 +627,7 @@ static struct platform_device *devices[] __initdata = {
         &corgifb_device,
         &corgikbd_device,
         &corgiled_device,
+        &sharpsl_nand_device,
         &sharpsl_rom_device,
 };
 
@@ -617,6 +668,9 @@ static void __init corgi_init(void)
 
         platform_scoop_config = &corgi_pcmcia_config;
 
+        if (machine_is_husky())
+                sharpsl_nand_partitions[1].size = 53 * 1024 * 1024;
+
         platform_add_devices(devices, ARRAY_SIZE(devices));
 }
 
diff --git a/arch/arm/mach-pxa/poodle.c b/arch/arm/mach-pxa/poodle.c
index ae88855bf974..f9093beba752 100644
--- a/arch/arm/mach-pxa/poodle.c
+++ b/arch/arm/mach-pxa/poodle.c
@@ -24,6 +24,7 @@
 #include <linux/gpio.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
+#include <linux/mtd/sharpsl.h>
 
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
@@ -414,6 +415,55 @@ static struct pxafb_mach_info poodle_fb_info = {
         .lcd_conn       = LCD_COLOR_TFT_16BPP,
 };
 
+static struct mtd_partition sharpsl_nand_partitions[] = {
+        {
+                .name = "System Area",
+                .offset = 0,
+                .size = 7 * 1024 * 1024,
+        },
+        {
+                .name = "Root Filesystem",
+                .offset = 7 * 1024 * 1024,
+                .size = 22 * 1024 * 1024,
+        },
+        {
+                .name = "Home Filesystem",
+                .offset = MTDPART_OFS_APPEND,
+                .size = MTDPART_SIZ_FULL,
+        },
+};
+
+static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
+
+static struct nand_bbt_descr sharpsl_bbt = {
+        .options = 0,
+        .offs = 4,
+        .len = 2,
+        .pattern = scan_ff_pattern
+};
+
+static struct sharpsl_nand_platform_data sharpsl_nand_platform_data = {
+        .badblock_pattern       = &sharpsl_bbt,
+        .partitions             = sharpsl_nand_partitions,
+        .nr_partitions          = ARRAY_SIZE(sharpsl_nand_partitions),
+};
+
+static struct resource sharpsl_nand_resources[] = {
+        {
+                .start  = 0x0C000000,
+                .end    = 0x0C000FFF,
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+static struct platform_device sharpsl_nand_device = {
+        .name           = "sharpsl-nand",
+        .id             = -1,
+        .resource       = sharpsl_nand_resources,
+        .num_resources  = ARRAY_SIZE(sharpsl_nand_resources),
+        .dev.platform_data      = &sharpsl_nand_platform_data,
+};
+
 static struct mtd_partition sharpsl_rom_parts[] = {
         {
                 .name   ="Boot PROM Filesystem",
@@ -447,6 +497,7 @@ static struct platform_device sharpsl_rom_device = {
 static struct platform_device *devices[] __initdata = {
         &poodle_locomo_device,
         &poodle_scoop_device,
+        &sharpsl_nand_device,
         &sharpsl_rom_device,
 };
 
diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c
index 7299d87a1cb3..6d447c9ce8ab 100644
--- a/arch/arm/mach-pxa/spitz.c
+++ b/arch/arm/mach-pxa/spitz.c
@@ -31,6 +31,7 @@
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
 #include <linux/spi/corgi_lcd.h>
+#include <linux/mtd/sharpsl.h>
 
 #include <asm/setup.h>
 #include <asm/memory.h>
@@ -613,6 +614,54 @@ static struct pxafb_mach_info spitz_pxafb_info = {
         .lcd_conn       = LCD_COLOR_TFT_16BPP | LCD_ALTERNATE_MAPPING,
 };
 
+static struct mtd_partition sharpsl_nand_partitions[] = {
+        {
+                .name = "System Area",
+                .offset = 0,
+                .size = 7 * 1024 * 1024,
+        },
+        {
+                .name = "Root Filesystem",
+                .offset = 7 * 1024 * 1024,
+        },
+        {
+                .name = "Home Filesystem",
+                .offset = MTDPART_OFS_APPEND,
+                .size = MTDPART_SIZ_FULL,
+        },
+};
+
+static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
+
+static struct nand_bbt_descr sharpsl_bbt = {
+        .options = 0,
+        .offs = 4,
+        .len = 2,
+        .pattern = scan_ff_pattern
+};
+
+static struct sharpsl_nand_platform_data sharpsl_nand_platform_data = {
+        .badblock_pattern       = &sharpsl_bbt,
+        .partitions             = sharpsl_nand_partitions,
+        .nr_partitions          = ARRAY_SIZE(sharpsl_nand_partitions),
+};
+
+static struct resource sharpsl_nand_resources[] = {
+        {
+                .start  = 0x0C000000,
+                .end    = 0x0C000FFF,
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+static struct platform_device sharpsl_nand_device = {
+        .name           = "sharpsl-nand",
+        .id             = -1,
+        .resource       = sharpsl_nand_resources,
+        .num_resources  = ARRAY_SIZE(sharpsl_nand_resources),
+        .dev.platform_data      = &sharpsl_nand_platform_data,
+};
+
 
 static struct mtd_partition sharpsl_rom_parts[] = {
         {
@@ -648,6 +697,7 @@ static struct platform_device *devices[] __initdata = {
         &spitzscoop_device,
         &spitzkbd_device,
         &spitzled_device,
+        &sharpsl_nand_device,
         &sharpsl_rom_device,
 };
 
@@ -671,6 +721,14 @@ static void __init common_init(void)
         pm_power_off = spitz_poweroff;
         arm_pm_restart = spitz_restart;
 
+        if (machine_is_spitz()) {
+                sharpsl_nand_partitions[1].size = 5 * 1024 * 1024;
+        } else if (machine_is_akita()) {
+                sharpsl_nand_partitions[1].size = 58 * 1024 * 1024;
+        } else if (machine_is_borzoi()) {
+                sharpsl_nand_partitions[1].size = 32 * 1024 * 1024;
+        }
+
         PMCR = 0x00;
 
         /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
@@ -715,10 +773,29 @@ static struct i2c_board_info akita_i2c_board_info[] = {
         },
 };
 
+static struct nand_bbt_descr sharpsl_akita_bbt = {
+        .options = 0,
+        .offs = 4,
+        .len = 1,
+        .pattern = scan_ff_pattern
+};
+
+static struct nand_ecclayout akita_oobinfo = {
+        .eccbytes = 24,
+        .eccpos = {
+                   0x5, 0x1, 0x2, 0x3, 0x6, 0x7, 0x15, 0x11,
+                   0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23,
+                   0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37},
+        .oobfree = {{0x08, 0x09}}
+};
+
 static void __init akita_init(void)
 {
         spitz_ficp_platform_data.transceiver_mode = akita_irda_transceiver_mode;
 
+        sharpsl_nand_platform_data.badblock_pattern = &sharpsl_akita_bbt;
+        sharpsl_nand_platform_data.ecc_layout = &akita_oobinfo;
+
         /* We just pretend the second element of the array doesn't exist */
         spitz_pcmcia_config.num_devs = 1;
         platform_scoop_config = &spitz_pcmcia_config;
diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
index ea7bc1e8562b..3fbfd1e32a9e 100644
--- a/arch/avr32/mach-at32ap/at32ap700x.c
+++ b/arch/avr32/mach-at32ap/at32ap700x.c
@@ -1305,7 +1305,7 @@ struct platform_device *__init
 at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
 {
         struct platform_device          *pdev;
-        struct dw_dma_slave             *dws;
+        struct dw_dma_slave             *dws = &data->dma_slave;
         u32                             pioa_mask;
         u32                             piob_mask;
 
@@ -1324,22 +1324,13 @@ at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
                                 ARRAY_SIZE(atmel_mci0_resource)))
                 goto fail;
 
-        if (data->dma_slave)
-                dws = kmemdup(to_dw_dma_slave(data->dma_slave),
-                                sizeof(struct dw_dma_slave), GFP_KERNEL);
-        else
-                dws = kzalloc(sizeof(struct dw_dma_slave), GFP_KERNEL);
-
-        dws->slave.dev = &pdev->dev;
-        dws->slave.dma_dev = &dw_dmac0_device.dev;
-        dws->slave.reg_width = DMA_SLAVE_WIDTH_32BIT;
+        dws->dma_dev = &dw_dmac0_device.dev;
+        dws->reg_width = DW_DMA_SLAVE_WIDTH_32BIT;
         dws->cfg_hi = (DWC_CFGH_SRC_PER(0)
                                 | DWC_CFGH_DST_PER(1));
         dws->cfg_lo &= ~(DWC_CFGL_HS_DST_POL
                                 | DWC_CFGL_HS_SRC_POL);
 
-        data->dma_slave = &dws->slave;
-
         if (platform_device_add_data(pdev, data,
                                 sizeof(struct mci_platform_data)))
                 goto fail;
diff --git a/arch/ia64/include/asm/acpi-ext.h b/arch/ia64/include/asm/acpi-ext.h
index 734d137dda6e..7f8362b379eb 100644
--- a/arch/ia64/include/asm/acpi-ext.h
+++ b/arch/ia64/include/asm/acpi-ext.h
@@ -14,7 +14,6 @@
 #define _ASM_IA64_ACPI_EXT_H
 
 #include <linux/types.h>
-#include <acpi/actypes.h>
 
 extern acpi_status hp_acpi_csr_space (acpi_handle, u64 *base, u64 *length);
 
diff --git a/arch/ia64/include/asm/sn/acpi.h b/arch/ia64/include/asm/sn/acpi.h
index 9ce2801cbd57..fd480db25565 100644
--- a/arch/ia64/include/asm/sn/acpi.h
+++ b/arch/ia64/include/asm/sn/acpi.h
@@ -9,8 +9,6 @@
 #ifndef _ASM_IA64_SN_ACPI_H
 #define _ASM_IA64_SN_ACPI_H
 
-#include "acpi/acglobal.h"
-
 extern int sn_acpi_rev;
 #define SN_ACPI_BASE_SUPPORT()   (sn_acpi_rev >= 0x20101)
 
diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 0553648b7595..d541671caf4a 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -65,6 +65,7 @@ EXPORT_SYMBOL(pm_idle);
 void (*pm_power_off) (void);
 EXPORT_SYMBOL(pm_power_off);
 
+u32 acpi_rsdt_forced;
 unsigned int acpi_cpei_override;
 unsigned int acpi_cpei_phys_cpuid;
 
diff --git a/arch/ia64/sn/kernel/io_acpi_init.c b/arch/ia64/sn/kernel/io_acpi_init.c
index bc610a6c7851..c5a214026a77 100644
--- a/arch/ia64/sn/kernel/io_acpi_init.c
+++ b/arch/ia64/sn/kernel/io_acpi_init.c
@@ -13,7 +13,6 @@
 #include <asm/sn/sn_sal.h>
 #include "xtalk/hubdev.h"
 #include <linux/acpi.h>
-#include <acpi/acnamesp.h>
 
 
 /*
@@ -64,6 +63,7 @@ static acpi_status __init
 sn_acpi_hubdev_init(acpi_handle handle, u32 depth, void *context, void **ret)
 {
         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+        struct acpi_buffer name_buffer = { ACPI_ALLOCATE_BUFFER, NULL };
         u64 addr;
         struct hubdev_info *hubdev;
         struct hubdev_info *hubdev_ptr;
@@ -77,11 +77,12 @@ sn_acpi_hubdev_init(acpi_handle handle, u32 depth, void *context, void **ret)
         status = acpi_get_vendor_resource(handle, METHOD_NAME__CRS,
                                           &sn_uuid, &buffer);
         if (ACPI_FAILURE(status)) {
+                acpi_get_name(handle, ACPI_FULL_PATHNAME, &name_buffer);
                 printk(KERN_ERR
                        "sn_acpi_hubdev_init: acpi_get_vendor_resource() "
-                       "(0x%x) failed for: ", status);
-                acpi_ns_print_node_pathname(handle, NULL);
-                printk("\n");
+                       "(0x%x) failed for: %s\n", status,
+                        (char *)name_buffer.pointer);
+                kfree(name_buffer.pointer);
                 return AE_OK;           /* Continue walking namespace */
         }
 
@@ -89,11 +90,12 @@ sn_acpi_hubdev_init(acpi_handle handle, u32 depth, void *context, void **ret)
         vendor = &resource->data.vendor_typed;
         if ((vendor->byte_length - sizeof(struct acpi_vendor_uuid)) !=
             sizeof(struct hubdev_info *)) {
+                acpi_get_name(handle, ACPI_FULL_PATHNAME, &name_buffer);
                 printk(KERN_ERR
-                       "sn_acpi_hubdev_init: Invalid vendor data length: %d for: ",
-                        vendor->byte_length);
-                acpi_ns_print_node_pathname(handle, NULL);
-                printk("\n");
+                       "sn_acpi_hubdev_init: Invalid vendor data length: "
+                       "%d for: %s\n",
+                        vendor->byte_length, (char *)name_buffer.pointer);
+                kfree(name_buffer.pointer);
                 goto exit;
         }
 
@@ -120,6 +122,7 @@ sn_get_bussoft_ptr(struct pci_bus *bus)
 {
         u64 addr;
         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+        struct acpi_buffer name_buffer = { ACPI_ALLOCATE_BUFFER, NULL };
         acpi_handle handle;
         struct pcibus_bussoft *prom_bussoft_ptr;
         struct acpi_resource *resource;
@@ -131,11 +134,11 @@ sn_get_bussoft_ptr(struct pci_bus *bus)
         status = acpi_get_vendor_resource(handle, METHOD_NAME__CRS,
                                           &sn_uuid, &buffer);
         if (ACPI_FAILURE(status)) {
+                acpi_get_name(handle, ACPI_FULL_PATHNAME, &name_buffer);
                 printk(KERN_ERR "%s: "
-                       "acpi_get_vendor_resource() failed (0x%x) for: ",
-                       __func__, status);
-                acpi_ns_print_node_pathname(handle, NULL);
-                printk("\n");
+                       "acpi_get_vendor_resource() failed (0x%x) for: %s\n",
+                       __func__, status, (char *)name_buffer.pointer);
+                kfree(name_buffer.pointer);
                 return NULL;
         }
         resource = buffer.pointer;
@@ -168,6 +171,7 @@ sn_extract_device_info(acpi_handle handle, struct pcidev_info **pcidev_info,
 {
         u64 addr;
         struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+        struct acpi_buffer name_buffer = { ACPI_ALLOCATE_BUFFER, NULL };
         struct sn_irq_info *irq_info, *irq_info_prom;
         struct pcidev_info *pcidev_ptr, *pcidev_prom_ptr;
         struct acpi_resource *resource;
@@ -182,11 +186,11 @@ sn_extract_device_info(acpi_handle handle, struct pcidev_info **pcidev_info,
         status = acpi_get_vendor_resource(handle, METHOD_NAME__CRS,
                                           &sn_uuid, &buffer);
         if (ACPI_FAILURE(status)) {
+                acpi_get_name(handle, ACPI_FULL_PATHNAME, &name_buffer);
                 printk(KERN_ERR
-                       "%s: acpi_get_vendor_resource() failed (0x%x) for: ",
-                        __func__, status);
-                acpi_ns_print_node_pathname(handle, NULL);
-                printk("\n");
+                       "%s: acpi_get_vendor_resource() failed (0x%x) for: %s\n",
+                        __func__, status, (char *)name_buffer.pointer);
+                kfree(name_buffer.pointer);
                 return 1;
         }
 
@@ -194,11 +198,12 @@ sn_extract_device_info(acpi_handle handle, struct pcidev_info **pcidev_info,
         vendor = &resource->data.vendor_typed;
         if ((vendor->byte_length - sizeof(struct acpi_vendor_uuid)) !=
             sizeof(struct pci_devdev_info *)) {
+                acpi_get_name(handle, ACPI_FULL_PATHNAME, &name_buffer);
                 printk(KERN_ERR
-                       "%s: Invalid vendor data length: %d for: ",
-                        __func__, vendor->byte_length);
-                acpi_ns_print_node_pathname(handle, NULL);
-                printk("\n");
+                       "%s: Invalid vendor data length: %d for: %s\n",
+                         __func__, vendor->byte_length,
+                        (char *)name_buffer.pointer);
+                kfree(name_buffer.pointer);
                 ret = 1;
                 goto exit;
         }
@@ -239,6 +244,9 @@ get_host_devfn(acpi_handle device_handle, acpi_handle rootbus_handle)
         acpi_handle parent;
         int slot;
         acpi_status status;
+        struct acpi_buffer name_buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+
+        acpi_get_name(device_handle, ACPI_FULL_PATHNAME, &name_buffer);
 
         /*
          * Do an upward search to find the root bus device, and
@@ -249,9 +257,8 @@ get_host_devfn(acpi_handle device_handle, acpi_handle rootbus_handle)
                 status = acpi_get_parent(child, &parent);
                 if (ACPI_FAILURE(status)) {
                         printk(KERN_ERR "%s: acpi_get_parent() failed "
-                               "(0x%x) for: ", __func__, status);
-                        acpi_ns_print_node_pathname(child, NULL);
-                        printk("\n");
+                               "(0x%x) for: %s\n", __func__, status,
+                                (char *)name_buffer.pointer);
                         panic("%s: Unable to find host devfn\n", __func__);
                 }
                 if (parent == rootbus_handle)
@@ -259,22 +266,20 @@ get_host_devfn(acpi_handle device_handle, acpi_handle rootbus_handle)
                 child = parent;
         }
         if (!child) {
-                printk(KERN_ERR "%s: Unable to find root bus for: ",
-                       __func__);
-                acpi_ns_print_node_pathname(device_handle, NULL);
-                printk("\n");
+                printk(KERN_ERR "%s: Unable to find root bus for: %s\n",
+                       __func__, (char *)name_buffer.pointer);
                 BUG();
         }
 
         status = acpi_evaluate_integer(child, METHOD_NAME__ADR, NULL, &adr);
         if (ACPI_FAILURE(status)) {
-                printk(KERN_ERR "%s: Unable to get _ADR (0x%x) for: ",
-                       __func__, status);
-                acpi_ns_print_node_pathname(child, NULL);
-                printk("\n");
+                printk(KERN_ERR "%s: Unable to get _ADR (0x%x) for: %s\n",
+                       __func__, status, (char *)name_buffer.pointer);
                 panic("%s: Unable to find host devfn\n", __func__);
         }
 
+        kfree(name_buffer.pointer);
+
         slot = (adr >> 16) & 0xffff;
         function = adr & 0xffff;
         devfn = PCI_DEVFN(slot, function);
@@ -300,27 +305,28 @@ find_matching_device(acpi_handle handle, u32 lvl, void *context, void **rv)
         int function;
         int slot;
         struct sn_pcidev_match *info = context;
+        struct acpi_buffer name_buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 
         status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL,
                                        &adr);
         if (ACPI_SUCCESS(status)) {
                 status = acpi_get_parent(handle, &parent);
                 if (ACPI_FAILURE(status)) {
+                        acpi_get_name(handle, ACPI_FULL_PATHNAME, &name_buffer);
                         printk(KERN_ERR
-                               "%s: acpi_get_parent() failed (0x%x) for: ",
-                                        __func__, status);
-                        acpi_ns_print_node_pathname(handle, NULL);
-                        printk("\n");
+                               "%s: acpi_get_parent() failed (0x%x) for: %s\n",
+                                __func__, status, (char *)name_buffer.pointer);
+                        kfree(name_buffer.pointer);
                         return AE_OK;
                 }
                 status = acpi_evaluate_integer(parent, METHOD_NAME__BBN,
                                                NULL, &bbn);
                 if (ACPI_FAILURE(status)) {
+                        acpi_get_name(handle, ACPI_FULL_PATHNAME, &name_buffer);
                         printk(KERN_ERR
-                          "%s: Failed to find _BBN in parent of: ",
-                                        __func__);
-                        acpi_ns_print_node_pathname(handle, NULL);
-                        printk("\n");
+                          "%s: Failed to find _BBN in parent of: %s\n",
+                                        __func__, (char *)name_buffer.pointer);
+                        kfree(name_buffer.pointer);
                         return AE_OK;
                 }
 
@@ -350,24 +356,27 @@ sn_acpi_get_pcidev_info(struct pci_dev *dev, struct pcidev_info **pcidev_info,
         acpi_handle rootbus_handle;
         unsigned long long segment;
         acpi_status status;
+        struct acpi_buffer name_buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 
         rootbus_handle = PCI_CONTROLLER(dev)->acpi_handle;
         status = acpi_evaluate_integer(rootbus_handle, METHOD_NAME__SEG, NULL,
                                        &segment);
         if (ACPI_SUCCESS(status)) {
                 if (segment != pci_domain_nr(dev)) {
+                        acpi_get_name(rootbus_handle, ACPI_FULL_PATHNAME,
+                                &name_buffer);
                         printk(KERN_ERR
-                               "%s: Segment number mismatch, 0x%llx vs 0x%x for: ",
-                               __func__, segment, pci_domain_nr(dev));
-                        acpi_ns_print_node_pathname(rootbus_handle, NULL);
-                        printk("\n");
+                               "%s: Segment number mismatch, 0x%llx vs 0x%x for: %s\n",
+                               __func__, segment, pci_domain_nr(dev),
+                               (char *)name_buffer.pointer);
+                        kfree(name_buffer.pointer);
                         return 1;
                 }
         } else {
-                printk(KERN_ERR "%s: Unable to get __SEG from: ",
-                       __func__);
-                acpi_ns_print_node_pathname(rootbus_handle, NULL);
-                printk("\n");
+                acpi_get_name(rootbus_handle, ACPI_FULL_PATHNAME, &name_buffer);
+                printk(KERN_ERR "%s: Unable to get __SEG from: %s\n",
+                       __func__, (char *)name_buffer.pointer);
+                kfree(name_buffer.pointer);
                 return 1;
         }
 
diff --git a/arch/ia64/sn/kernel/io_common.c b/arch/ia64/sn/kernel/io_common.c
index 8a924a5661dd..0d4ffa4da1da 100644
--- a/arch/ia64/sn/kernel/io_common.c
+++ b/arch/ia64/sn/kernel/io_common.c
@@ -26,7 +26,6 @@
 #include <linux/acpi.h>
 #include <asm/sn/sn2/sn_hwperf.h>
 #include <asm/sn/acpi.h>
-#include "acpi/acglobal.h"
 
 extern void sn_init_cpei_timer(void);
 extern void register_sn_procfs(void);
@@ -473,7 +472,7 @@ sn_io_early_init(void)
         {
                 struct acpi_table_header *header = NULL;
 
-                acpi_get_table_by_index(ACPI_TABLE_INDEX_DSDT, &header);
+                acpi_get_table(ACPI_SIG_DSDT, 1, &header);
                 BUG_ON(header == NULL);
                 sn_acpi_rev = header->oem_revision;
         }
@@ -505,7 +504,7 @@ sn_io_early_init(void)
 
         {
                 struct acpi_table_header *header;
-                (void)acpi_get_table_by_index(ACPI_TABLE_INDEX_DSDT, &header);
+                (void)acpi_get_table(ACPI_SIG_DSDT, 1, &header);
                 printk(KERN_INFO "ACPI  DSDT OEM Rev 0x%x\n",
                         header->oem_revision);
         }
diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
index 5ddad7bd60ac..0d428278356d 100644
--- a/arch/parisc/Makefile
+++ b/arch/parisc/Makefile
@@ -77,7 +77,7 @@ libs-y	+= arch/parisc/lib/ `$(CC) -print-libgcc-file-name`
 
 drivers-$(CONFIG_OPROFILE)              += arch/parisc/oprofile/
 
-PALO := $(shell if which palo; then : ; \
+PALO := $(shell if (which palo 2>&1); then : ; \
         elif [ -x /sbin/palo ]; then echo /sbin/palo; \
         fi)
 
diff --git a/arch/parisc/include/asm/Kbuild b/arch/parisc/include/asm/Kbuild
index f88b252e419c..2121d99f8364 100644
--- a/arch/parisc/include/asm/Kbuild
+++ b/arch/parisc/include/asm/Kbuild
@@ -1,3 +1,4 @@
 include include/asm-generic/Kbuild.asm
 
 unifdef-y += pdc.h
+unifdef-y += swab.h
diff --git a/arch/parisc/include/asm/byteorder.h b/arch/parisc/include/asm/byteorder.h
index db148313de5d..da66029c4cb2 100644
--- a/arch/parisc/include/asm/byteorder.h
+++ b/arch/parisc/include/asm/byteorder.h
@@ -1,82 +1,7 @@
 #ifndef _PARISC_BYTEORDER_H
 #define _PARISC_BYTEORDER_H
 
-#include <asm/types.h>
-#include <linux/compiler.h>
-
-#ifdef __GNUC__
-
-static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
-{
-        __asm__("dep %0, 15, 8, %0\n\t"         /* deposit 00ab -> 0bab */
-                "shd %%r0, %0, 8, %0"           /* shift 000000ab -> 00ba */
-                : "=r" (x)
-                : "0" (x));
-        return x;
-}
-
-static __inline__ __attribute_const__ __u32 ___arch__swab24(__u32 x)
-{
-        __asm__("shd %0, %0, 8, %0\n\t"         /* shift xabcxabc -> cxab */
-                "dep %0, 15, 8, %0\n\t"         /* deposit cxab -> cbab */
-                "shd %%r0, %0, 8, %0"           /* shift 0000cbab -> 0cba */
-                : "=r" (x)
-                : "0" (x));
-        return x;
-}
-
-static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
-{
-        unsigned int temp;
-        __asm__("shd %0, %0, 16, %1\n\t"        /* shift abcdabcd -> cdab */
-                "dep %1, 15, 8, %1\n\t"         /* deposit cdab -> cbab */
-                "shd %0, %1, 8, %0"             /* shift abcdcbab -> dcba */
-                : "=r" (x), "=&r" (temp)
-                : "0" (x));
-        return x;
-}
-
-
-#if BITS_PER_LONG > 32
-/*
-** From "PA-RISC 2.0 Architecture", HP Professional Books.
-** See Appendix I page 8 , "Endian Byte Swapping".
-**
-** Pretty cool algorithm: (* == zero'd bits)
-**      PERMH   01234567 -> 67452301 into %0
-**      HSHL    67452301 -> 7*5*3*1* into %1
-**      HSHR    67452301 -> *6*4*2*0 into %0
-**      OR      %0 | %1  -> 76543210 into %0 (all done!)
-*/
-static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x) {
-        __u64 temp;
-        __asm__("permh,3210 %0, %0\n\t"
-                "hshl %0, 8, %1\n\t"
-                "hshr,u %0, 8, %0\n\t"
-                "or %1, %0, %0"
-                : "=r" (x), "=&r" (temp)
-                : "0" (x));
-        return x;
-}
-#define __arch__swab64(x) ___arch__swab64(x)
-#define __BYTEORDER_HAS_U64__
-#elif !defined(__STRICT_ANSI__)
-static __inline__ __attribute_const__ __u64 ___arch__swab64(__u64 x)
-{
-        __u32 t1 = ___arch__swab32((__u32) x);
-        __u32 t2 = ___arch__swab32((__u32) (x >> 32));
-        return (((__u64) t1 << 32) | t2);
-}
-#define __arch__swab64(x) ___arch__swab64(x)
-#define __BYTEORDER_HAS_U64__
-#endif
-
-#define __arch__swab16(x) ___arch__swab16(x)
-#define __arch__swab24(x) ___arch__swab24(x)
-#define __arch__swab32(x) ___arch__swab32(x)
-
-#endif /* __GNUC__ */
-
+#include <asm/swab.h>
 #include <linux/byteorder/big_endian.h>
 
 #endif /* _PARISC_BYTEORDER_H */
diff --git a/arch/parisc/include/asm/checksum.h b/arch/parisc/include/asm/checksum.h
index e9639ccc3fce..c84b2fcb18a9 100644
--- a/arch/parisc/include/asm/checksum.h
+++ b/arch/parisc/include/asm/checksum.h
@@ -182,7 +182,7 @@ static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
 #endif
         : "=r" (sum), "=r" (saddr), "=r" (daddr), "=r" (len)
         : "0" (sum), "1" (saddr), "2" (daddr), "3" (len), "r" (proto)
-        : "r19", "r20", "r21", "r22");
+        : "r19", "r20", "r21", "r22", "memory");
         return csum_fold(sum);
 }
 
diff --git a/arch/parisc/include/asm/io.h b/arch/parisc/include/asm/io.h
index 55ddb1842107..d3031d1f9d03 100644
--- a/arch/parisc/include/asm/io.h
+++ b/arch/parisc/include/asm/io.h
@@ -4,12 +4,6 @@
 #include <linux/types.h>
 #include <asm/pgtable.h>
 
-extern unsigned long parisc_vmerge_boundary;
-extern unsigned long parisc_vmerge_max_size;
-
-#define BIO_VMERGE_BOUNDARY     parisc_vmerge_boundary
-#define BIO_VMERGE_MAX_SIZE     parisc_vmerge_max_size
-
 #define virt_to_phys(a) ((unsigned long)__pa(a))
 #define phys_to_virt(a) __va(a)
 #define virt_to_bus virt_to_phys
@@ -182,9 +176,9 @@ static inline void __raw_writeq(unsigned long long b, volatile void __iomem *add
 
 /* readb can never be const, so use __fswab instead of le*_to_cpu */
 #define readb(addr) __raw_readb(addr)
-#define readw(addr) __fswab16(__raw_readw(addr))
-#define readl(addr) __fswab32(__raw_readl(addr))
-#define readq(addr) __fswab64(__raw_readq(addr))
+#define readw(addr) le16_to_cpu(__raw_readw(addr))
+#define readl(addr) le32_to_cpu(__raw_readl(addr))
+#define readq(addr) le64_to_cpu(__raw_readq(addr))
 #define writeb(b, addr) __raw_writeb(b, addr)
 #define writew(b, addr) __raw_writew(cpu_to_le16(b), addr)
 #define writel(b, addr) __raw_writel(cpu_to_le32(b), addr)
diff --git a/arch/parisc/include/asm/mmu_context.h b/arch/parisc/include/asm/mmu_context.h
index 85856c74ad1d..354b2aca990e 100644
--- a/arch/parisc/include/asm/mmu_context.h
+++ b/arch/parisc/include/asm/mmu_context.h
@@ -34,16 +34,21 @@ destroy_context(struct mm_struct *mm)
         mm->context = 0;
 }
 
-static inline void load_context(mm_context_t context)
+static inline unsigned long __space_to_prot(mm_context_t context)
 {
-        mtsp(context, 3);
 #if SPACEID_SHIFT == 0
-        mtctl(context << 1,8);
+        return context << 1;
 #else
-        mtctl(context >> (SPACEID_SHIFT - 1),8);
+        return context >> (SPACEID_SHIFT - 1);
 #endif
 }
 
+static inline void load_context(mm_context_t context)
+{
+        mtsp(context, 3);
+        mtctl(__space_to_prot(context), 8);
+}
+
 static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk)
 {
 
diff --git a/arch/parisc/include/asm/processor.h b/arch/parisc/include/asm/processor.h
index 3c9d34844c83..9d64df8754ba 100644
--- a/arch/parisc/include/asm/processor.h
+++ b/arch/parisc/include/asm/processor.h
@@ -17,6 +17,7 @@
 #include <asm/ptrace.h>
 #include <asm/types.h>
 #include <asm/system.h>
+#include <asm/percpu.h>
 #endif /* __ASSEMBLY__ */
 
 #define KERNEL_STACK_SIZE       (4*PAGE_SIZE)
@@ -109,8 +110,7 @@ struct cpuinfo_parisc {
 };
 
 extern struct system_cpuinfo_parisc boot_cpu_data;
-extern struct cpuinfo_parisc cpu_data[NR_CPUS];
-#define current_cpu_data cpu_data[smp_processor_id()]
+DECLARE_PER_CPU(struct cpuinfo_parisc, cpu_data);
 
 #define CPU_HVERSION ((boot_cpu_data.hversion >> 4) & 0x0FFF)
 
diff --git a/arch/parisc/include/asm/swab.h b/arch/parisc/include/asm/swab.h
new file mode 100644
index 000000000000..3ff16c5a3358
--- /dev/null
+++ b/arch/parisc/include/asm/swab.h
@@ -0,0 +1,66 @@
+#ifndef _PARISC_SWAB_H
+#define _PARISC_SWAB_H
+
+#include <asm/types.h>
+#include <linux/compiler.h>
+
+#define __SWAB_64_THRU_32__
+
+static inline __attribute_const__ __u16 __arch_swab16(__u16 x)
+{
+        __asm__("dep %0, 15, 8, %0\n\t"         /* deposit 00ab -> 0bab */
+                "shd %%r0, %0, 8, %0"           /* shift 000000ab -> 00ba */
+                : "=r" (x)
+                : "0" (x));
+        return x;
+}
+#define __arch_swab16 __arch_swab16
+
+static inline __attribute_const__ __u32 __arch_swab24(__u32 x)
+{
+        __asm__("shd %0, %0, 8, %0\n\t"         /* shift xabcxabc -> cxab */
+                "dep %0, 15, 8, %0\n\t"         /* deposit cxab -> cbab */
+                "shd %%r0, %0, 8, %0"           /* shift 0000cbab -> 0cba */
+                : "=r" (x)
+                : "0" (x));
+        return x;
+}
+
+static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
+{
+        unsigned int temp;
+        __asm__("shd %0, %0, 16, %1\n\t"        /* shift abcdabcd -> cdab */
+                "dep %1, 15, 8, %1\n\t"         /* deposit cdab -> cbab */
+                "shd %0, %1, 8, %0"             /* shift abcdcbab -> dcba */
+                : "=r" (x), "=&r" (temp)
+                : "0" (x));
+        return x;
+}
+#define __arch_swab32 __arch_swab32
+
+#if BITS_PER_LONG > 32
+/*
+** From "PA-RISC 2.0 Architecture", HP Professional Books.
+** See Appendix I page 8 , "Endian Byte Swapping".
+**
+** Pretty cool algorithm: (* == zero'd bits)
+**      PERMH   01234567 -> 67452301 into %0
+**      HSHL    67452301 -> 7*5*3*1* into %1
+**      HSHR    67452301 -> *6*4*2*0 into %0
+**      OR      %0 | %1  -> 76543210 into %0 (all done!)
+*/
+static inline __attribute_const__ __u64 __arch_swab64(__u64 x)
+{
+        __u64 temp;
+        __asm__("permh,3210 %0, %0\n\t"
+                "hshl %0, 8, %1\n\t"
+                "hshr,u %0, 8, %0\n\t"
+                "or %1, %0, %0"
+                : "=r" (x), "=&r" (temp)
+                : "0" (x));
+        return x;
+}
+#define __arch_swab64 __arch_swab64
+#endif /* BITS_PER_LONG > 32 */
+
+#endif /* _PARISC_SWAB_H */
diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h
index 4878b9501f24..1c6dbb6f6e56 100644
--- a/arch/parisc/include/asm/uaccess.h
+++ b/arch/parisc/include/asm/uaccess.h
@@ -241,4 +241,6 @@ unsigned long copy_in_user(void __user *dst, const void __user *src, unsigned lo
 #define __copy_to_user_inatomic __copy_to_user
 #define __copy_from_user_inatomic __copy_from_user
 
+int fixup_exception(struct pt_regs *regs);
+
 #endif /* __PARISC_UACCESS_H */
diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c
index 884b7ce16a3b..994bcd980909 100644
--- a/arch/parisc/kernel/drivers.c
+++ b/arch/parisc/kernel/drivers.c
@@ -549,6 +549,38 @@ static int parisc_generic_match(struct device *dev, struct device_driver *drv)
         return match_device(to_parisc_driver(drv), to_parisc_device(dev));
 }
 
+static ssize_t make_modalias(struct device *dev, char *buf)
+{
+        const struct parisc_device *padev = to_parisc_device(dev);
+        const struct parisc_device_id *id = &padev->id;
+
+        return sprintf(buf, "parisc:t%02Xhv%04Xrev%02Xsv%08X\n",
+                (u8)id->hw_type, (u16)id->hversion, (u8)id->hversion_rev,
+                (u32)id->sversion);
+}
+
+static int parisc_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+        const struct parisc_device *padev;
+        char modalias[40];
+
+        if (!dev)
+                return -ENODEV;
+
+        padev = to_parisc_device(dev);
+        if (!padev)
+                return -ENODEV;
+
+        if (add_uevent_var(env, "PARISC_NAME=%s", padev->name))
+                return -ENOMEM;
+
+        make_modalias(dev, modalias);
+        if (add_uevent_var(env, "MODALIAS=%s", modalias))
+                return -ENOMEM;
+
+        return 0;
+}
+
 #define pa_dev_attr(name, field, format_string)                         \
 static ssize_t name##_show(struct device *dev, struct device_attribute *attr, char *buf)                \
 {                                                                       \
@@ -566,12 +598,7 @@ pa_dev_attr_id(sversion, "0x%05x\n");
 
 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
-        struct parisc_device *padev = to_parisc_device(dev);
-        struct parisc_device_id *id = &padev->id;
-
-        return sprintf(buf, "parisc:t%02Xhv%04Xrev%02Xsv%08X\n",
-                (u8)id->hw_type, (u16)id->hversion, (u8)id->hversion_rev,
-                (u32)id->sversion);
+        return make_modalias(dev, buf);
 }
 
 static struct device_attribute parisc_device_attrs[] = {
@@ -587,6 +614,7 @@ static struct device_attribute parisc_device_attrs[] = {
 struct bus_type parisc_bus_type = {
         .name = "parisc",
         .match = parisc_generic_match,
+        .uevent = parisc_uevent,
         .dev_attrs = parisc_device_attrs,
         .probe = parisc_driver_probe,
         .remove = parisc_driver_remove,
diff --git a/arch/parisc/kernel/hpmc.S b/arch/parisc/kernel/hpmc.S
index 2cbf13b3ef11..5595a2f31181 100644
--- a/arch/parisc/kernel/hpmc.S
+++ b/arch/parisc/kernel/hpmc.S
@@ -80,6 +80,7 @@ END(hpmc_pim_data)
 
         .import intr_save, code
 ENTRY(os_hpmc)
+.os_hpmc:
 
         /*
          * registers modified:
@@ -295,5 +296,10 @@ os_hpmc_6:
         b .
         nop
 ENDPROC(os_hpmc)
-ENTRY(os_hpmc_end)      /* this label used to compute os_hpmc checksum */
+.os_hpmc_end:
         nop
+.data
+.align 4
+        .export os_hpmc_size
+os_hpmc_size:
+        .word .os_hpmc_end-.os_hpmc
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index 4cea935e2f99..ac2c822928c7 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -298,7 +298,7 @@ unsigned long txn_affinity_addr(unsigned int irq, int cpu)
         irq_desc[irq].affinity = cpumask_of_cpu(cpu);
 #endif
 
-        return cpu_data[cpu].txn_addr;
+        return per_cpu(cpu_data, cpu).txn_addr;
 }
 
 
@@ -309,8 +309,9 @@ unsigned long txn_alloc_addr(unsigned int virt_irq)
         next_cpu++; /* assign to "next" CPU we want this bugger on */
 
         /* validate entry */
-        while ((next_cpu < NR_CPUS) && (!cpu_data[next_cpu].txn_addr || 
-                !cpu_online(next_cpu)))
+        while ((next_cpu < NR_CPUS) &&
+                (!per_cpu(cpu_data, next_cpu).txn_addr ||
+                 !cpu_online(next_cpu)))
                 next_cpu++;
 
         if (next_cpu >= NR_CPUS) 
@@ -359,7 +360,7 @@ void do_cpu_irq_mask(struct pt_regs *regs)
                 printk(KERN_DEBUG "redirecting irq %d from CPU %d to %d\n",
                        irq, smp_processor_id(), cpu);
                 gsc_writel(irq + CPU_IRQ_BASE,
-                           cpu_data[cpu].hpa);
+                           per_cpu(cpu_data, cpu).hpa);
                 goto set_out;
         }
 #endif
@@ -421,5 +422,5 @@ void __init init_IRQ(void)
 
 void ack_bad_irq(unsigned int irq)
 {
-        printk("unexpected IRQ %d\n", irq);
+        printk(KERN_WARNING "unexpected IRQ %d\n", irq);
 }
diff --git a/arch/parisc/kernel/pdc_cons.c b/arch/parisc/kernel/pdc_cons.c
index ccb68090781e..1ff366cb9685 100644
--- a/arch/parisc/kernel/pdc_cons.c
+++ b/arch/parisc/kernel/pdc_cons.c
@@ -52,7 +52,7 @@
 #include <linux/tty.h>
 #include <asm/pdc.h>            /* for iodc_call() proto and friends */
 
-static spinlock_t pdc_console_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(pdc_console_lock);
 
 static void pdc_console_write(struct console *co, const char *s, unsigned count)
 {
diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c
index f696f57faa15..75099efb3bf3 100644
--- a/arch/parisc/kernel/perf.c
+++ b/arch/parisc/kernel/perf.c
@@ -541,9 +541,9 @@ static int __init perf_init(void)
         spin_lock_init(&perf_lock);
 
         /* TODO: this only lets us access the first cpu.. what to do for SMP? */
-        cpu_device = cpu_data[0].dev;
+        cpu_device = per_cpu(cpu_data, 0).dev;
         printk("Performance monitoring counters enabled for %s\n",
-                cpu_data[0].dev->name);
+                per_cpu(cpu_data, 0).dev->name);
 
         return 0;
 }
diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c
index 370086fb8333..ecb609342feb 100644
--- a/arch/parisc/kernel/processor.c
+++ b/arch/parisc/kernel/processor.c
@@ -3,7 +3,7 @@
  *    Initial setup-routines for HP 9000 based hardware.
  *
  *    Copyright (C) 1991, 1992, 1995  Linus Torvalds
- *    Modifications for PA-RISC (C) 1999 Helge Deller <deller@gmx.de>
+ *    Modifications for PA-RISC (C) 1999-2008 Helge Deller <deller@gmx.de>
  *    Modifications copyright 1999 SuSE GmbH (Philipp Rumpf)
  *    Modifications copyright 2000 Martin K. Petersen <mkp@mkp.net>
  *    Modifications copyright 2000 Philipp Rumpf <prumpf@tux.org>
@@ -46,7 +46,7 @@
 struct system_cpuinfo_parisc boot_cpu_data __read_mostly;
 EXPORT_SYMBOL(boot_cpu_data);
 
-struct cpuinfo_parisc cpu_data[NR_CPUS] __read_mostly;
+DEFINE_PER_CPU(struct cpuinfo_parisc, cpu_data);
 
 extern int update_cr16_clocksource(void);       /* from time.c */
 
@@ -69,6 +69,23 @@ extern int update_cr16_clocksource(void);	/* from time.c */
 */
 
 /**
+ * init_cpu_profiler - enable/setup per cpu profiling hooks.
+ * @cpunum: The processor instance.
+ *
+ * FIXME: doesn't do much yet...
+ */
+static void __cpuinit
+init_percpu_prof(unsigned long cpunum)
+{
+        struct cpuinfo_parisc *p;
+
+        p = &per_cpu(cpu_data, cpunum);
+        p->prof_counter = 1;
+        p->prof_multiplier = 1;
+}
+
+
+/**
  * processor_probe - Determine if processor driver should claim this device.
  * @dev: The device which has been found.
  *
@@ -147,7 +164,7 @@ static int __cpuinit processor_probe(struct parisc_device *dev)
         }
 #endif
 
-        p = &cpu_data[cpuid];
+        p = &per_cpu(cpu_data, cpuid);
         boot_cpu_data.cpu_count++;
 
         /* initialize counters - CPU 0 gets it_value set in time_init() */
@@ -162,12 +179,9 @@ static int __cpuinit processor_probe(struct parisc_device *dev)
 #ifdef CONFIG_SMP
         /*
         ** FIXME: review if any other initialization is clobbered
-        **      for boot_cpu by the above memset().
+        **        for boot_cpu by the above memset().
         */
-
-        /* stolen from init_percpu_prof() */
-        cpu_data[cpuid].prof_counter = 1;
-        cpu_data[cpuid].prof_multiplier = 1;
+        init_percpu_prof(cpuid);
 #endif
 
         /*
@@ -261,19 +275,6 @@ void __init collect_boot_cpu_data(void)
 }
 
 
-/**
- * init_cpu_profiler - enable/setup per cpu profiling hooks.
- * @cpunum: The processor instance.
- *
- * FIXME: doesn't do much yet...
- */
-static inline void __init
-init_percpu_prof(int cpunum)
-{
-        cpu_data[cpunum].prof_counter = 1;
-        cpu_data[cpunum].prof_multiplier = 1;
-}
-
 
 /**
  * init_per_cpu - Handle individual processor initializations.
@@ -293,7 +294,7 @@ init_percpu_prof(int cpunum)
  *
  * o Enable CPU profiling hooks.
  */
-int __init init_per_cpu(int cpunum)
+int __cpuinit init_per_cpu(int cpunum)
 {
         int ret;
         struct pdc_coproc_cfg coproc_cfg;
@@ -307,8 +308,8 @@ int __init init_per_cpu(int cpunum)
                 /* FWIW, FP rev/model is a more accurate way to determine
                 ** CPU type. CPU rev/model has some ambiguous cases.
                 */
-                cpu_data[cpunum].fp_rev = coproc_cfg.revision;
-                cpu_data[cpunum].fp_model = coproc_cfg.model;
+                per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision;
+                per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model;
 
                 printk(KERN_INFO  "FP[%d] enabled: Rev %ld Model %ld\n",
                         cpunum, coproc_cfg.revision, coproc_cfg.model);
@@ -344,16 +345,17 @@ int __init init_per_cpu(int cpunum)
 int
 show_cpuinfo (struct seq_file *m, void *v)
 {
-        int     n;
+        unsigned long cpu;
 
-        for(n=0; n<boot_cpu_data.cpu_count; n++) {
+        for_each_online_cpu(cpu) {
+                const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu);
 #ifdef CONFIG_SMP
-                if (0 == cpu_data[n].hpa)
+                if (0 == cpuinfo->hpa)
                         continue;
 #endif
-                seq_printf(m, "processor\t: %d\n"
+                seq_printf(m, "processor\t: %lu\n"
                                 "cpu family\t: PA-RISC %s\n",
-                                 n, boot_cpu_data.family_name);
+                                 cpu, boot_cpu_data.family_name);
 
                 seq_printf(m, "cpu\t\t: %s\n",  boot_cpu_data.cpu_name );
 
@@ -365,8 +367,8 @@ show_cpuinfo (struct seq_file *m, void *v)
                 seq_printf(m, "model\t\t: %s\n"
                                 "model name\t: %s\n",
                                  boot_cpu_data.pdc.sys_model_name,
-                                 cpu_data[n].dev ? 
-                                 cpu_data[n].dev->name : "Unknown" );
+                                 cpuinfo->dev ?
+                                 cpuinfo->dev->name : "Unknown");
 
                 seq_printf(m, "hversion\t: 0x%08x\n"
                                 "sversion\t: 0x%08x\n",
@@ -377,8 +379,8 @@ show_cpuinfo (struct seq_file *m, void *v)
                 show_cache_info(m);
 
                 seq_printf(m, "bogomips\t: %lu.%02lu\n",
-                             cpu_data[n].loops_per_jiffy / (500000 / HZ),
-                             (cpu_data[n].loops_per_jiffy / (5000 / HZ)) % 100);
+                             cpuinfo->loops_per_jiffy / (500000 / HZ),
+                             (cpuinfo->loops_per_jiffy / (5000 / HZ)) % 100);
 
                 seq_printf(m, "software id\t: %ld\n\n",
                                 boot_cpu_data.pdc.model.sw_id);
diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c
index 7d27853ff8c8..82131ca8e05c 100644
--- a/arch/parisc/kernel/setup.c
+++ b/arch/parisc/kernel/setup.c
@@ -58,11 +58,6 @@ int parisc_bus_is_phys __read_mostly = 1;	/* Assume no IOMMU is present */
 EXPORT_SYMBOL(parisc_bus_is_phys);
 #endif
 
-/* This sets the vmerge boundary and size, it's here because it has to
- * be available on all platforms (zero means no-virtual merging) */
-unsigned long parisc_vmerge_boundary = 0;
-unsigned long parisc_vmerge_max_size = 0;
-
 void __init setup_cmdline(char **cmdline_p)
 {
         extern unsigned int boot_args[];
@@ -321,7 +316,7 @@ static int __init parisc_init(void)
         
         processor_init();
         printk(KERN_INFO "CPU(s): %d x %s at %d.%06d MHz\n",
-                        boot_cpu_data.cpu_count,
+                        num_present_cpus(),
                         boot_cpu_data.cpu_name,
                         boot_cpu_data.cpu_hz / 1000000,
                         boot_cpu_data.cpu_hz % 1000000  );
@@ -387,8 +382,8 @@ void start_parisc(void)
         if (ret >= 0 && coproc_cfg.ccr_functional) {
                 mtctl(coproc_cfg.ccr_functional, 10);
 
-                cpu_data[cpunum].fp_rev = coproc_cfg.revision;
-                cpu_data[cpunum].fp_model = coproc_cfg.model;
+                per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision;
+                per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model;
 
                 asm volatile ("fstd     %fr0,8(%sp)");
         } else {
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index 80bc000523fa..9995d7ed5819 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -56,16 +56,17 @@ static int smp_debug_lvl = 0;
                 if (lvl >= smp_debug_lvl)       \
                         printk(printargs);
 #else
-#define smp_debug(lvl, ...)
+#define smp_debug(lvl, ...)     do { } while(0)
 #endif /* DEBUG_SMP */
 
 DEFINE_SPINLOCK(smp_lock);
 
 volatile struct task_struct *smp_init_current_idle_task;
 
-static volatile int cpu_now_booting __read_mostly = 0;  /* track which CPU is booting */
+/* track which CPU is booting */
+static volatile int cpu_now_booting __cpuinitdata;
 
-static int parisc_max_cpus __read_mostly = 1;
+static int parisc_max_cpus __cpuinitdata = 1;
 
 DEFINE_PER_CPU(spinlock_t, ipi_lock) = SPIN_LOCK_UNLOCKED;
 
@@ -123,7 +124,7 @@ irqreturn_t
 ipi_interrupt(int irq, void *dev_id) 
 {
         int this_cpu = smp_processor_id();
-        struct cpuinfo_parisc *p = &cpu_data[this_cpu];
+        struct cpuinfo_parisc *p = &per_cpu(cpu_data, this_cpu);
         unsigned long ops;
         unsigned long flags;
 
@@ -202,13 +203,13 @@ ipi_interrupt(int irq, void *dev_id)
 static inline void
 ipi_send(int cpu, enum ipi_message_type op)
 {
-        struct cpuinfo_parisc *p = &cpu_data[cpu];
+        struct cpuinfo_parisc *p = &per_cpu(cpu_data, cpu);
         spinlock_t *lock = &per_cpu(ipi_lock, cpu);
         unsigned long flags;
 
         spin_lock_irqsave(lock, flags);
         p->pending_ipi |= 1 << op;
-        gsc_writel(IPI_IRQ - CPU_IRQ_BASE, cpu_data[cpu].hpa);
+        gsc_writel(IPI_IRQ - CPU_IRQ_BASE, p->hpa);
         spin_unlock_irqrestore(lock, flags);
 }
 
@@ -224,10 +225,7 @@ send_IPI_mask(cpumask_t mask, enum ipi_message_type op)
 static inline void
 send_IPI_single(int dest_cpu, enum ipi_message_type op)
 {
-        if (dest_cpu == NO_PROC_ID) {
-                BUG();
-                return;
-        }
+        BUG_ON(dest_cpu == NO_PROC_ID);
 
         ipi_send(dest_cpu, op);
 }
@@ -309,8 +307,7 @@ smp_cpu_init(int cpunum)
         /* Initialise the idle task for this CPU */
         atomic_inc(&init_mm.mm_count);
         current->active_mm = &init_mm;
-        if(current->mm)
-                BUG();
+        BUG_ON(current->mm);
         enter_lazy_tlb(&init_mm, current);
 
         init_IRQ();   /* make sure no IRQs are enabled or pending */
@@ -345,6 +342,7 @@ void __init smp_callin(void)
  */
 int __cpuinit smp_boot_one_cpu(int cpuid)
 {
+        const struct cpuinfo_parisc *p = &per_cpu(cpu_data, cpuid);
         struct task_struct *idle;
         long timeout;
 
@@ -376,7 +374,7 @@ int __cpuinit smp_boot_one_cpu(int cpuid)
         smp_init_current_idle_task = idle ;
         mb();
 
-        printk("Releasing cpu %d now, hpa=%lx\n", cpuid, cpu_data[cpuid].hpa);
+        printk(KERN_INFO "Releasing cpu %d now, hpa=%lx\n", cpuid, p->hpa);
 
         /*
         ** This gets PDC to release the CPU from a very tight loop.
@@ -387,7 +385,7 @@ int __cpuinit smp_boot_one_cpu(int cpuid)
         ** EIR{0}). MEM_RENDEZ is valid only when it is nonzero and the 
         ** contents of memory are valid."
         */
-        gsc_writel(TIMER_IRQ - CPU_IRQ_BASE, cpu_data[cpuid].hpa);
+        gsc_writel(TIMER_IRQ - CPU_IRQ_BASE, p->hpa);
         mb();
 
         /* 
@@ -419,12 +417,12 @@ alive:
         return 0;
 }
 
-void __devinit smp_prepare_boot_cpu(void)
+void __init smp_prepare_boot_cpu(void)
 {
-        int bootstrap_processor=cpu_data[0].cpuid;      /* CPU ID of BSP */
+        int bootstrap_processor = per_cpu(cpu_data, 0).cpuid;
 
         /* Setup BSP mappings */
-        printk("SMP: bootstrap CPU ID is %d\n",bootstrap_processor);
+        printk(KERN_INFO "SMP: bootstrap CPU ID is %d\n", bootstrap_processor);
 
         cpu_set(bootstrap_processor, cpu_online_map);
         cpu_set(bootstrap_processor, cpu_present_map);
diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c
index 4d09203bc693..9d46c43a4152 100644
--- a/arch/parisc/kernel/time.c
+++ b/arch/parisc/kernel/time.c
@@ -60,7 +60,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id)
         unsigned long cycles_elapsed, ticks_elapsed;
         unsigned long cycles_remainder;
         unsigned int cpu = smp_processor_id();
-        struct cpuinfo_parisc *cpuinfo = &cpu_data[cpu];
+        struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu);
 
         /* gcc can optimize for "read-only" case with a local clocktick */
         unsigned long cpt = clocktick;
@@ -213,7 +213,7 @@ void __init start_cpu_itimer(void)
 
         mtctl(next_tick, 16);           /* kick off Interval Timer (CR16) */
 
-        cpu_data[cpu].it_value = next_tick;
+        per_cpu(cpu_data, cpu).it_value = next_tick;
 }
 
 struct platform_device rtc_parisc_dev = {
diff --git a/arch/parisc/kernel/topology.c b/arch/parisc/kernel/topology.c
index d71cb018a21e..f5159381fdd6 100644
--- a/arch/parisc/kernel/topology.c
+++ b/arch/parisc/kernel/topology.c
@@ -22,14 +22,14 @@
 #include <linux/cpu.h>
 #include <linux/cache.h>
 
-static struct cpu cpu_devices[NR_CPUS] __read_mostly;
+static DEFINE_PER_CPU(struct cpu, cpu_devices);
 
 static int __init topology_init(void)
 {
         int num;
 
         for_each_present_cpu(num) {
-                register_cpu(&cpu_devices[num], num);
+                register_cpu(&per_cpu(cpu_devices, num), num);
         }
         return 0;
 }
diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
index 4c771cd580ec..ba658d2086f7 100644
--- a/arch/parisc/kernel/traps.c
+++ b/arch/parisc/kernel/traps.c
@@ -745,6 +745,10 @@ void handle_interruption(int code, struct pt_regs *regs)
                 /* Fall Through */
         case 27: 
                 /* Data memory protection ID trap */
+                if (code == 27 && !user_mode(regs) &&
+                        fixup_exception(regs))
+                        return;
+
                 die_if_kernel("Protection id trap", regs, code);
                 si.si_code = SEGV_MAPERR;
                 si.si_signo = SIGSEGV;
@@ -821,8 +825,8 @@ void handle_interruption(int code, struct pt_regs *regs)
 
 int __init check_ivt(void *iva)
 {
+        extern u32 os_hpmc_size;
         extern const u32 os_hpmc[];
-        extern const u32 os_hpmc_end[];
 
         int i;
         u32 check = 0;
@@ -839,8 +843,7 @@ int __init check_ivt(void *iva)
             *ivap++ = 0;
 
         /* Compute Checksum for HPMC handler */
-
-        length = os_hpmc_end - os_hpmc;
+        length = os_hpmc_size;
         ivap[7] = length;
 
         hpmcp = (u32 *)os_hpmc;
diff --git a/arch/parisc/kernel/unwind.c b/arch/parisc/kernel/unwind.c
index 6773c582e457..69dad5a850a8 100644
--- a/arch/parisc/kernel/unwind.c
+++ b/arch/parisc/kernel/unwind.c
@@ -372,7 +372,7 @@ void unwind_frame_init_from_blocked_task(struct unwind_frame_info *info, struct
         struct pt_regs *r = &t->thread.regs;
         struct pt_regs *r2;
 
-        r2 = kmalloc(sizeof(struct pt_regs), GFP_KERNEL);
+        r2 = kmalloc(sizeof(struct pt_regs), GFP_ATOMIC);
         if (!r2)
                 return;
         *r2 = *r;
diff --git a/arch/parisc/lib/iomap.c b/arch/parisc/lib/iomap.c
index 9abed07db7fc..5069e8b2ca71 100644
--- a/arch/parisc/lib/iomap.c
+++ b/arch/parisc/lib/iomap.c
@@ -261,7 +261,7 @@ static const struct iomap_ops iomem_ops = {
         iomem_write32r,
 };
 
-const struct iomap_ops *iomap_ops[8] = {
+static const struct iomap_ops *iomap_ops[8] = {
         [0] = &ioport_ops,
         [7] = &iomem_ops
 };
diff --git a/arch/parisc/lib/memcpy.c b/arch/parisc/lib/memcpy.c
index 2d68431fc22e..bbda909c866e 100644
--- a/arch/parisc/lib/memcpy.c
+++ b/arch/parisc/lib/memcpy.c
@@ -275,7 +275,7 @@ handle_store_error:
 
 
 /* Returns 0 for success, otherwise, returns number of bytes not transferred. */
-unsigned long pa_memcpy(void *dstp, const void *srcp, unsigned long len)
+static unsigned long pa_memcpy(void *dstp, const void *srcp, unsigned long len)
 {
         register unsigned long src, dst, t1, t2, t3;
         register unsigned char *pcs, *pcd;
diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index b2e3e9a8cece..92c7fa4ecc3f 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -139,13 +139,41 @@ parisc_acctyp(unsigned long code, unsigned int inst)
                         }
 #endif
 
+int fixup_exception(struct pt_regs *regs)
+{
+        const struct exception_table_entry *fix;
+
+        fix = search_exception_tables(regs->iaoq[0]);
+        if (fix) {
+                struct exception_data *d;
+                d = &__get_cpu_var(exception_data);
+                d->fault_ip = regs->iaoq[0];
+                d->fault_space = regs->isr;
+                d->fault_addr = regs->ior;
+
+                regs->iaoq[0] = ((fix->fixup) & ~3);
+                /*
+                 * NOTE: In some cases the faulting instruction
+                 * may be in the delay slot of a branch. We
+                 * don't want to take the branch, so we don't
+                 * increment iaoq[1], instead we set it to be
+                 * iaoq[0]+4, and clear the B bit in the PSW
+                 */
+                regs->iaoq[1] = regs->iaoq[0] + 4;
+                regs->gr[0] &= ~PSW_B; /* IPSW in gr[0] */
+
+                return 1;
+        }
+
+        return 0;
+}
+
 void do_page_fault(struct pt_regs *regs, unsigned long code,
                               unsigned long address)
 {
         struct vm_area_struct *vma, *prev_vma;
         struct task_struct *tsk = current;
         struct mm_struct *mm = tsk->mm;
-        const struct exception_table_entry *fix;
         unsigned long acc_type;
         int fault;
 
@@ -229,32 +257,8 @@ bad_area:
 
 no_context:
 
-        if (!user_mode(regs)) {
-                fix = search_exception_tables(regs->iaoq[0]);
-
-                if (fix) {
-                        struct exception_data *d;
-
-                        d = &__get_cpu_var(exception_data);
-                        d->fault_ip = regs->iaoq[0];
-                        d->fault_space = regs->isr;
-                        d->fault_addr = regs->ior;
-
-                        regs->iaoq[0] = ((fix->fixup) & ~3);
-
-                        /*
-                         * NOTE: In some cases the faulting instruction
-                         * may be in the delay slot of a branch. We
-                         * don't want to take the branch, so we don't
-                         * increment iaoq[1], instead we set it to be
-                         * iaoq[0]+4, and clear the B bit in the PSW
-                         */
-
-                        regs->iaoq[1] = regs->iaoq[0] + 4;
-                        regs->gr[0] &= ~PSW_B; /* IPSW in gr[0] */
-
-                        return;
-                }
+        if (!user_mode(regs) && fixup_exception(regs)) {
+                return;
         }
 
         parisc_terminate("Bad Address (null pointer deref?)", regs, code, address);
diff --git a/arch/powerpc/include/asm/cell-pmu.h b/arch/powerpc/include/asm/cell-pmu.h
index 8066eede3a0c..b4b7338ad79e 100644
--- a/arch/powerpc/include/asm/cell-pmu.h
+++ b/arch/powerpc/include/asm/cell-pmu.h
@@ -37,9 +37,11 @@
 #define CBE_PM_STOP_AT_MAX                 0x40000000
 #define CBE_PM_TRACE_MODE_GET(pm_control)  (((pm_control) >> 28) & 0x3)
 #define CBE_PM_TRACE_MODE_SET(mode)        (((mode)  & 0x3) << 28)
+#define CBE_PM_TRACE_BUF_OVFLW(bit)        (((bit) & 0x1) << 17)
 #define CBE_PM_COUNT_MODE_SET(count)       (((count) & 0x3) << 18)
 #define CBE_PM_FREEZE_ALL_CTRS             0x00100000
 #define CBE_PM_ENABLE_EXT_TRACE            0x00008000
+#define CBE_PM_SPU_ADDR_TRACE_SET(msk)     (((msk) & 0x3) << 9)
 
 /* Macros for the trace_address register. */
 #define CBE_PM_TRACE_BUF_FULL              0x00000800
diff --git a/arch/powerpc/include/asm/oprofile_impl.h b/arch/powerpc/include/asm/oprofile_impl.h
index 95035c602ba6..639dc96077ab 100644
--- a/arch/powerpc/include/asm/oprofile_impl.h
+++ b/arch/powerpc/include/asm/oprofile_impl.h
@@ -32,6 +32,12 @@ struct op_system_config {
         unsigned long mmcr0;
         unsigned long mmcr1;
         unsigned long mmcra;
+#ifdef CONFIG_OPROFILE_CELL
+        /* Register for oprofile user tool to check cell kernel profiling
+         * suport.
+         */
+        unsigned long cell_support;
+#endif
 #endif
         unsigned long enable_kernel;
         unsigned long enable_user;
diff --git a/arch/powerpc/oprofile/cell/pr_util.h b/arch/powerpc/oprofile/cell/pr_util.h
index dfdbffa06818..964b93974d89 100644
--- a/arch/powerpc/oprofile/cell/pr_util.h
+++ b/arch/powerpc/oprofile/cell/pr_util.h
@@ -30,6 +30,10 @@
 extern struct delayed_work spu_work;
 extern int spu_prof_running;
 
+#define TRACE_ARRAY_SIZE 1024
+
+extern spinlock_t oprof_spu_smpl_arry_lck;
+
 struct spu_overlay_info {       /* map of sections within an SPU overlay */
         unsigned int vma;       /* SPU virtual memory address from elf */
         unsigned int size;      /* size of section from elf */
@@ -89,10 +93,11 @@ void vma_map_free(struct vma_to_fileoffset_map *map);
  * Entry point for SPU profiling.
  * cycles_reset is the SPU_CYCLES count value specified by the user.
  */
-int start_spu_profiling(unsigned int cycles_reset);
-
-void stop_spu_profiling(void);
+int start_spu_profiling_cycles(unsigned int cycles_reset);
+void start_spu_profiling_events(void);
 
+void stop_spu_profiling_cycles(void);
+void stop_spu_profiling_events(void);
 
 /* add the necessary profiling hooks */
 int spu_sync_start(void);
diff --git a/arch/powerpc/oprofile/cell/spu_profiler.c b/arch/powerpc/oprofile/cell/spu_profiler.c
index 83faa958b9d4..9305ddaac512 100644
--- a/arch/powerpc/oprofile/cell/spu_profiler.c
+++ b/arch/powerpc/oprofile/cell/spu_profiler.c
@@ -18,11 +18,21 @@
 #include <asm/cell-pmu.h>
 #include "pr_util.h"
 
-#define TRACE_ARRAY_SIZE 1024
 #define SCALE_SHIFT 14
 
 static u32 *samples;
 
+/* spu_prof_running is a flag used to indicate if spu profiling is enabled
+ * or not.  It is set by the routines start_spu_profiling_cycles() and
+ * start_spu_profiling_events().  The flag is cleared by the routines
+ * stop_spu_profiling_cycles() and stop_spu_profiling_events().  These
+ * routines are called via global_start() and global_stop() which are called in
+ * op_powerpc_start() and op_powerpc_stop().  These routines are called once
+ * per system as a result of the user starting/stopping oprofile.  Hence, only
+ * one CPU per user at a time will be changing  the value of spu_prof_running.
+ * In general, OProfile does not protect against multiple users trying to run
+ * OProfile at a time.
+ */
 int spu_prof_running;
 static unsigned int profiling_interval;
 
@@ -31,8 +41,8 @@ static unsigned int profiling_interval;
 
 #define SPU_PC_MASK          0xFFFF
 
-static DEFINE_SPINLOCK(sample_array_lock);
-unsigned long sample_array_lock_flags;
+DEFINE_SPINLOCK(oprof_spu_smpl_arry_lck);
+unsigned long oprof_spu_smpl_arry_lck_flags;
 
 void set_spu_profiling_frequency(unsigned int freq_khz, unsigned int cycles_reset)
 {
@@ -145,13 +155,13 @@ static enum hrtimer_restart profile_spus(struct hrtimer *timer)
                  * sample array must be loaded and then processed for a given
                  * cpu.  The sample array is not per cpu.
                  */
-                spin_lock_irqsave(&sample_array_lock,
-                                  sample_array_lock_flags);
+                spin_lock_irqsave(&oprof_spu_smpl_arry_lck,
+                                  oprof_spu_smpl_arry_lck_flags);
                 num_samples = cell_spu_pc_collection(cpu);
 
                 if (num_samples == 0) {
-                        spin_unlock_irqrestore(&sample_array_lock,
-                                               sample_array_lock_flags);
+                        spin_unlock_irqrestore(&oprof_spu_smpl_arry_lck,
+                                               oprof_spu_smpl_arry_lck_flags);
                         continue;
                 }
 
@@ -162,8 +172,8 @@ static enum hrtimer_restart profile_spus(struct hrtimer *timer)
                                         num_samples);
                 }
 
-                spin_unlock_irqrestore(&sample_array_lock,
-                                       sample_array_lock_flags);
+                spin_unlock_irqrestore(&oprof_spu_smpl_arry_lck,
+                                       oprof_spu_smpl_arry_lck_flags);
 
         }
         smp_wmb();      /* insure spu event buffer updates are written */
@@ -182,13 +192,13 @@ static enum hrtimer_restart profile_spus(struct hrtimer *timer)
 
 static struct hrtimer timer;
 /*
- * Entry point for SPU profiling.
+ * Entry point for SPU cycle profiling.
  * NOTE:  SPU profiling is done system-wide, not per-CPU.
  *
  * cycles_reset is the count value specified by the user when
  * setting up OProfile to count SPU_CYCLES.
  */
-int start_spu_profiling(unsigned int cycles_reset)
+int start_spu_profiling_cycles(unsigned int cycles_reset)
 {
         ktime_t kt;
 
@@ -212,10 +222,30 @@ int start_spu_profiling(unsigned int cycles_reset)
         return 0;
 }
 
-void stop_spu_profiling(void)
+/*
+ * Entry point for SPU event profiling.
+ * NOTE:  SPU profiling is done system-wide, not per-CPU.
+ *
+ * cycles_reset is the count value specified by the user when
+ * setting up OProfile to count SPU_CYCLES.
+ */
+void start_spu_profiling_events(void)
+{
+        spu_prof_running = 1;
+        schedule_delayed_work(&spu_work, DEFAULT_TIMER_EXPIRE);
+
+        return;
+}
+
+void stop_spu_profiling_cycles(void)
 {
         spu_prof_running = 0;
         hrtimer_cancel(&timer);
         kfree(samples);
-        pr_debug("SPU_PROF: stop_spu_profiling issued\n");
+        pr_debug("SPU_PROF: stop_spu_profiling_cycles issued\n");
+}
+
+void stop_spu_profiling_events(void)
+{
+        spu_prof_running = 0;
 }
diff --git a/arch/powerpc/oprofile/common.c b/arch/powerpc/oprofile/common.c
index 17807acb05d9..21f16edf6c8d 100644
--- a/arch/powerpc/oprofile/common.c
+++ b/arch/powerpc/oprofile/common.c
@@ -132,6 +132,28 @@ static int op_powerpc_create_files(struct super_block *sb, struct dentry *root)
         oprofilefs_create_ulong(sb, root, "mmcr0", &sys.mmcr0);
         oprofilefs_create_ulong(sb, root, "mmcr1", &sys.mmcr1);
         oprofilefs_create_ulong(sb, root, "mmcra", &sys.mmcra);
+#ifdef CONFIG_OPROFILE_CELL
+        /* create a file the user tool can check to see what level of profiling
+         * support exits with this kernel. Initialize bit mask to indicate
+         * what support the kernel has:
+         * bit 0      -  Supports SPU event profiling in addition to PPU
+         *               event and cycles; and SPU cycle profiling
+         * bits 1-31  -  Currently unused.
+         *
+         * If the file does not exist, then the kernel only supports SPU
+         * cycle profiling, PPU event and cycle profiling.
+         */
+        oprofilefs_create_ulong(sb, root, "cell_support", &sys.cell_support);
+        sys.cell_support = 0x1; /* Note, the user OProfile tool must check
+                                 * that this bit is set before attempting to
+                                 * user SPU event profiling.  Older kernels
+                                 * will not have this file, hence the user
+                                 * tool is not allowed to do SPU event
+                                 * profiling on older kernels.  Older kernels
+                                 * will accept SPU events but collected data
+                                 * is garbage.
+                                 */
+#endif
 #endif
 
         for (i = 0; i < model->num_counters; ++i) {
diff --git a/arch/powerpc/oprofile/op_model_cell.c b/arch/powerpc/oprofile/op_model_cell.c
index 25a4ec2514a3..ae06c6236d9c 100644
--- a/arch/powerpc/oprofile/op_model_cell.c
+++ b/arch/powerpc/oprofile/op_model_cell.c
@@ -40,14 +40,15 @@
 #include "../platforms/cell/interrupt.h"
 #include "cell/pr_util.h"
 
-static void cell_global_stop_spu(void);
+#define PPU_PROFILING            0
+#define SPU_PROFILING_CYCLES     1
+#define SPU_PROFILING_EVENTS     2
 
-/*
- * spu_cycle_reset is the number of cycles between samples.
- * This variable is used for SPU profiling and should ONLY be set
- * at the beginning of cell_reg_setup; otherwise, it's read-only.
- */
-static unsigned int spu_cycle_reset;
+#define SPU_EVENT_NUM_START      4100
+#define SPU_EVENT_NUM_STOP       4399
+#define SPU_PROFILE_EVENT_ADDR          4363  /* spu, address trace, decimal */
+#define SPU_PROFILE_EVENT_ADDR_MASK_A   0x146 /* sub unit set to zero */
+#define SPU_PROFILE_EVENT_ADDR_MASK_B   0x186 /* sub unit set to zero */
 
 #define NUM_SPUS_PER_NODE    8
 #define SPU_CYCLES_EVENT_NUM 2  /*  event number for SPU_CYCLES */
@@ -66,6 +67,21 @@ static unsigned int spu_cycle_reset;
 
 #define MAX_SPU_COUNT 0xFFFFFF  /* maximum 24 bit LFSR value */
 
+/* Minumum HW interval timer setting to send value to trace buffer is 10 cycle.
+ * To configure counter to send value every N cycles set counter to
+ * 2^32 - 1 - N.
+ */
+#define NUM_INTERVAL_CYC  0xFFFFFFFF - 10
+
+/*
+ * spu_cycle_reset is the number of cycles between samples.
+ * This variable is used for SPU profiling and should ONLY be set
+ * at the beginning of cell_reg_setup; otherwise, it's read-only.
+ */
+static unsigned int spu_cycle_reset;
+static unsigned int profiling_mode;
+static int spu_evnt_phys_spu_indx;
+
 struct pmc_cntrl_data {
         unsigned long vcntr;
         unsigned long evnts;
@@ -105,6 +121,8 @@ struct pm_cntrl {
         u16 trace_mode;
         u16 freeze;
         u16 count_mode;
+        u16 spu_addr_trace;
+        u8  trace_buf_ovflw;
 };
 
 static struct {
@@ -122,7 +140,7 @@ static struct {
 #define GET_INPUT_CONTROL(x) ((x & 0x00000004) >> 2)
 
 static DEFINE_PER_CPU(unsigned long[NR_PHYS_CTRS], pmc_values);
-
+static unsigned long spu_pm_cnt[MAX_NUMNODES * NUM_SPUS_PER_NODE];
 static struct pmc_cntrl_data pmc_cntrl[NUM_THREADS][NR_PHYS_CTRS];
 
 /*
@@ -152,6 +170,7 @@ static u32 hdw_thread;
 
 static u32 virt_cntr_inter_mask;
 static struct timer_list timer_virt_cntr;
+static struct timer_list timer_spu_event_swap;
 
 /*
  * pm_signal needs to be global since it is initialized in
@@ -165,7 +184,7 @@ static int spu_rtas_token;   /* token for SPU cycle profiling */
 static u32 reset_value[NR_PHYS_CTRS];
 static int num_counters;
 static int oprofile_running;
-static DEFINE_SPINLOCK(virt_cntr_lock);
+static DEFINE_SPINLOCK(cntr_lock);
 
 static u32 ctr_enabled;
 
@@ -336,13 +355,13 @@ static void set_pm_event(u32 ctr, int event, u32 unit_mask)
         for (i = 0; i < NUM_DEBUG_BUS_WORDS; i++) {
                 if (bus_word & (1 << i)) {
                         pm_regs.debug_bus_control |=
-                            (bus_type << (30 - (2 * i)));
+                                (bus_type << (30 - (2 * i)));
 
                         for (j = 0; j < NUM_INPUT_BUS_WORDS; j++) {
                                 if (input_bus[j] == 0xff) {
                                         input_bus[j] = i;
                                         pm_regs.group_control |=
-                                            (i << (30 - (2 * j)));
+                                                (i << (30 - (2 * j)));
 
                                         break;
                                 }
@@ -367,12 +386,16 @@ static void write_pm_cntrl(int cpu)
         if (pm_regs.pm_cntrl.stop_at_max == 1)
                 val |= CBE_PM_STOP_AT_MAX;
 
-        if (pm_regs.pm_cntrl.trace_mode == 1)
+        if (pm_regs.pm_cntrl.trace_mode != 0)
                 val |= CBE_PM_TRACE_MODE_SET(pm_regs.pm_cntrl.trace_mode);
 
+        if (pm_regs.pm_cntrl.trace_buf_ovflw == 1)
+                val |= CBE_PM_TRACE_BUF_OVFLW(pm_regs.pm_cntrl.trace_buf_ovflw);
         if (pm_regs.pm_cntrl.freeze == 1)
                 val |= CBE_PM_FREEZE_ALL_CTRS;
 
+        val |= CBE_PM_SPU_ADDR_TRACE_SET(pm_regs.pm_cntrl.spu_addr_trace);
+
         /*
          * Routine set_count_mode must be called previously to set
          * the count mode based on the user selection of user and kernel.
@@ -441,7 +464,7 @@ static void cell_virtual_cntr(unsigned long data)
          * not both playing with the counters on the same node.
          */
 
-        spin_lock_irqsave(&virt_cntr_lock, flags);
+        spin_lock_irqsave(&cntr_lock, flags);
 
         prev_hdw_thread = hdw_thread;
 
@@ -480,7 +503,7 @@ static void cell_virtual_cntr(unsigned long data)
                 cbe_disable_pm_interrupts(cpu);
                 for (i = 0; i < num_counters; i++) {
                         per_cpu(pmc_values, cpu + prev_hdw_thread)[i]
-                            = cbe_read_ctr(cpu, i);
+                                = cbe_read_ctr(cpu, i);
 
                         if (per_cpu(pmc_values, cpu + next_hdw_thread)[i]
                             == 0xFFFFFFFF)
@@ -527,7 +550,7 @@ static void cell_virtual_cntr(unsigned long data)
                 cbe_enable_pm(cpu);
         }
 
-        spin_unlock_irqrestore(&virt_cntr_lock, flags);
+        spin_unlock_irqrestore(&cntr_lock, flags);
 
         mod_timer(&timer_virt_cntr, jiffies + HZ / 10);
 }
@@ -541,38 +564,146 @@ static void start_virt_cntrs(void)
         add_timer(&timer_virt_cntr);
 }
 
-/* This function is called once for all cpus combined */
-static int cell_reg_setup(struct op_counter_config *ctr,
+static int cell_reg_setup_spu_cycles(struct op_counter_config *ctr,
                         struct op_system_config *sys, int num_ctrs)
 {
-        int i, j, cpu;
-        spu_cycle_reset = 0;
+        spu_cycle_reset = ctr[0].count;
 
-        if (ctr[0].event == SPU_CYCLES_EVENT_NUM) {
-                spu_cycle_reset = ctr[0].count;
+        /*
+         * Each node will need to make the rtas call to start
+         * and stop SPU profiling.  Get the token once and store it.
+         */
+        spu_rtas_token = rtas_token("ibm,cbe-spu-perftools");
+
+        if (unlikely(spu_rtas_token == RTAS_UNKNOWN_SERVICE)) {
+                printk(KERN_ERR
+                       "%s: rtas token ibm,cbe-spu-perftools unknown\n",
+                       __func__);
+                return -EIO;
+        }
+        return 0;
+}
+
+/* Unfortunately, the hardware will only support event profiling
+ * on one SPU per node at a time.  Therefore, we must time slice
+ * the profiling across all SPUs in the node.  Note, we do this
+ * in parallel for each node.  The following routine is called
+ * periodically based on kernel timer to switch which SPU is
+ * being monitored in a round robbin fashion.
+ */
+static void spu_evnt_swap(unsigned long data)
+{
+        int node;
+        int cur_phys_spu, nxt_phys_spu, cur_spu_evnt_phys_spu_indx;
+        unsigned long flags;
+        int cpu;
+        int ret;
+        u32 interrupt_mask;
+
+
+        /* enable interrupts on cntr 0 */
+        interrupt_mask = CBE_PM_CTR_OVERFLOW_INTR(0);
+
+        hdw_thread = 0;
+
+        /* Make sure spu event interrupt handler and spu event swap
+         * don't access the counters simultaneously.
+         */
+        spin_lock_irqsave(&cntr_lock, flags);
+
+        cur_spu_evnt_phys_spu_indx = spu_evnt_phys_spu_indx;
+
+        if (++(spu_evnt_phys_spu_indx) == NUM_SPUS_PER_NODE)
+                spu_evnt_phys_spu_indx = 0;
+
+        pm_signal[0].sub_unit = spu_evnt_phys_spu_indx;
+        pm_signal[1].sub_unit = spu_evnt_phys_spu_indx;
+        pm_signal[2].sub_unit = spu_evnt_phys_spu_indx;
+
+        /* switch the SPU being profiled on each node */
+        for_each_online_cpu(cpu) {
+                if (cbe_get_hw_thread_id(cpu))
+                        continue;
+
+                node = cbe_cpu_to_node(cpu);
+                cur_phys_spu = (node * NUM_SPUS_PER_NODE)
+                        + cur_spu_evnt_phys_spu_indx;
+                nxt_phys_spu = (node * NUM_SPUS_PER_NODE)
+                        + spu_evnt_phys_spu_indx;
 
                 /*
-                 * Each node will need to make the rtas call to start
-                 * and stop SPU profiling.  Get the token once and store it.
+                 * stop counters, save counter values, restore counts
+                 * for previous physical SPU
                  */
-                spu_rtas_token = rtas_token("ibm,cbe-spu-perftools");
+                cbe_disable_pm(cpu);
+                cbe_disable_pm_interrupts(cpu);
 
-                if (unlikely(spu_rtas_token == RTAS_UNKNOWN_SERVICE)) {
-                        printk(KERN_ERR
-                               "%s: rtas token ibm,cbe-spu-perftools unknown\n",
-                               __func__);
-                        return -EIO;
-                }
+                spu_pm_cnt[cur_phys_spu]
+                        = cbe_read_ctr(cpu, 0);
+
+                /* restore previous count for the next spu to sample */
+                /* NOTE, hardware issue, counter will not start if the
+                 * counter value is at max (0xFFFFFFFF).
+                 */
+                if (spu_pm_cnt[nxt_phys_spu] >= 0xFFFFFFFF)
+                        cbe_write_ctr(cpu, 0, 0xFFFFFFF0);
+                 else
+                         cbe_write_ctr(cpu, 0, spu_pm_cnt[nxt_phys_spu]);
+
+                pm_rtas_reset_signals(cbe_cpu_to_node(cpu));
+
+                /* setup the debug bus measure the one event and
+                 * the two events to route the next SPU's PC on
+                 * the debug bus
+                 */
+                ret = pm_rtas_activate_signals(cbe_cpu_to_node(cpu), 3);
+                if (ret)
+                        printk(KERN_ERR "%s: pm_rtas_activate_signals failed, "
+                               "SPU event swap\n", __func__);
+
+                /* clear the trace buffer, don't want to take PC for
+                 * previous SPU*/
+                cbe_write_pm(cpu, trace_address, 0);
+
+                enable_ctr(cpu, 0, pm_regs.pm07_cntrl);
+
+                /* Enable interrupts on the CPU thread that is starting */
+                cbe_enable_pm_interrupts(cpu, hdw_thread,
+                                         interrupt_mask);
+                cbe_enable_pm(cpu);
         }
 
-        pm_rtas_token = rtas_token("ibm,cbe-perftools");
+        spin_unlock_irqrestore(&cntr_lock, flags);
 
+        /* swap approximately every 0.1 seconds */
+        mod_timer(&timer_spu_event_swap, jiffies + HZ / 25);
+}
+
+static void start_spu_event_swap(void)
+{
+        init_timer(&timer_spu_event_swap);
+        timer_spu_event_swap.function = spu_evnt_swap;
+        timer_spu_event_swap.data = 0UL;
+        timer_spu_event_swap.expires = jiffies + HZ / 25;
+        add_timer(&timer_spu_event_swap);
+}
+
+static int cell_reg_setup_spu_events(struct op_counter_config *ctr,
+                        struct op_system_config *sys, int num_ctrs)
+{
+        int i;
+
+        /* routine is called once for all nodes */
+
+        spu_evnt_phys_spu_indx = 0;
         /*
-         * For all events excetp PPU CYCLEs, each node will need to make
+         * For all events except PPU CYCLEs, each node will need to make
          * the rtas cbe-perftools call to setup and reset the debug bus.
          * Make the token lookup call once and store it in the global
          * variable pm_rtas_token.
          */
+        pm_rtas_token = rtas_token("ibm,cbe-perftools");
+
         if (unlikely(pm_rtas_token == RTAS_UNKNOWN_SERVICE)) {
                 printk(KERN_ERR
                        "%s: rtas token ibm,cbe-perftools unknown\n",
@@ -580,6 +711,58 @@ static int cell_reg_setup(struct op_counter_config *ctr,
                 return -EIO;
         }
 
+        /* setup the pm_control register settings,
+         * settings will be written per node by the
+         * cell_cpu_setup() function.
+         */
+        pm_regs.pm_cntrl.trace_buf_ovflw = 1;
+
+        /* Use the occurrence trace mode to have SPU PC saved
+         * to the trace buffer.  Occurrence data in trace buffer
+         * is not used.  Bit 2 must be set to store SPU addresses.
+         */
+        pm_regs.pm_cntrl.trace_mode = 2;
+
+        pm_regs.pm_cntrl.spu_addr_trace = 0x1;  /* using debug bus
+                                                   event 2 & 3 */
+
+        /* setup the debug bus event array with the SPU PC routing events.
+        *  Note, pm_signal[0] will be filled in by set_pm_event() call below.
+        */
+        pm_signal[1].signal_group = SPU_PROFILE_EVENT_ADDR / 100;
+        pm_signal[1].bus_word = GET_BUS_WORD(SPU_PROFILE_EVENT_ADDR_MASK_A);
+        pm_signal[1].bit = SPU_PROFILE_EVENT_ADDR % 100;
+        pm_signal[1].sub_unit = spu_evnt_phys_spu_indx;
+
+        pm_signal[2].signal_group = SPU_PROFILE_EVENT_ADDR / 100;
+        pm_signal[2].bus_word = GET_BUS_WORD(SPU_PROFILE_EVENT_ADDR_MASK_B);
+        pm_signal[2].bit = SPU_PROFILE_EVENT_ADDR % 100;
+        pm_signal[2].sub_unit = spu_evnt_phys_spu_indx;
+
+        /* Set the user selected spu event to profile on,
+         * note, only one SPU profiling event is supported
+         */
+        num_counters = 1;  /* Only support one SPU event at a time */
+        set_pm_event(0, ctr[0].event, ctr[0].unit_mask);
+
+        reset_value[0] = 0xFFFFFFFF - ctr[0].count;
+
+        /* global, used by cell_cpu_setup */
+        ctr_enabled |= 1;
+
+        /* Initialize the count for each SPU to the reset value */
+        for (i=0; i < MAX_NUMNODES * NUM_SPUS_PER_NODE; i++)
+                spu_pm_cnt[i] = reset_value[0];
+
+        return 0;
+}
+
+static int cell_reg_setup_ppu(struct op_counter_config *ctr,
+                        struct op_system_config *sys, int num_ctrs)
+{
+        /* routine is called once for all nodes */
+        int i, j, cpu;
+
         num_counters = num_ctrs;
 
         if (unlikely(num_ctrs > NR_PHYS_CTRS)) {
@@ -589,14 +772,6 @@ static int cell_reg_setup(struct op_counter_config *ctr,
                        __func__);
                 return -EIO;
         }
-        pm_regs.group_control = 0;
-        pm_regs.debug_bus_control = 0;
-
-        /* setup the pm_control register */
-        memset(&pm_regs.pm_cntrl, 0, sizeof(struct pm_cntrl));
-        pm_regs.pm_cntrl.stop_at_max = 1;
-        pm_regs.pm_cntrl.trace_mode = 0;
-        pm_regs.pm_cntrl.freeze = 1;
 
         set_count_mode(sys->enable_kernel, sys->enable_user);
 
@@ -665,6 +840,63 @@ static int cell_reg_setup(struct op_counter_config *ctr,
 }
 
 
+/* This function is called once for all cpus combined */
+static int cell_reg_setup(struct op_counter_config *ctr,
+                        struct op_system_config *sys, int num_ctrs)
+{
+        int ret=0;
+        spu_cycle_reset = 0;
+
+        /* initialize the spu_arr_trace value, will be reset if
+         * doing spu event profiling.
+         */
+        pm_regs.group_control = 0;
+        pm_regs.debug_bus_control = 0;
+        pm_regs.pm_cntrl.stop_at_max = 1;
+        pm_regs.pm_cntrl.trace_mode = 0;
+        pm_regs.pm_cntrl.freeze = 1;
+        pm_regs.pm_cntrl.trace_buf_ovflw = 0;
+        pm_regs.pm_cntrl.spu_addr_trace = 0;
+
+        /*
+         * For all events except PPU CYCLEs, each node will need to make
+         * the rtas cbe-perftools call to setup and reset the debug bus.
+         * Make the token lookup call once and store it in the global
+         * variable pm_rtas_token.
+         */
+        pm_rtas_token = rtas_token("ibm,cbe-perftools");
+
+        if (unlikely(pm_rtas_token == RTAS_UNKNOWN_SERVICE)) {
+                printk(KERN_ERR
+                       "%s: rtas token ibm,cbe-perftools unknown\n",
+                       __func__);
+                return -EIO;
+        }
+
+        if (ctr[0].event == SPU_CYCLES_EVENT_NUM) {
+                profiling_mode = SPU_PROFILING_CYCLES;
+                ret = cell_reg_setup_spu_cycles(ctr, sys, num_ctrs);
+        } else if ((ctr[0].event >= SPU_EVENT_NUM_START) &&
+                   (ctr[0].event <= SPU_EVENT_NUM_STOP)) {
+                profiling_mode = SPU_PROFILING_EVENTS;
+                spu_cycle_reset = ctr[0].count;
+
+                /* for SPU event profiling, need to setup the
+                 * pm_signal array with the events to route the
+                 * SPU PC before making the FW call.  Note, only
+                 * one SPU event for profiling can be specified
+                 * at a time.
+                 */
+                cell_reg_setup_spu_events(ctr, sys, num_ctrs);
+        } else {
+                profiling_mode = PPU_PROFILING;
+                ret = cell_reg_setup_ppu(ctr, sys, num_ctrs);
+        }
+
+        return ret;
+}
+
+
 
 /* This function is called once for each cpu */
 static int cell_cpu_setup(struct op_counter_config *cntr)
@@ -672,8 +904,13 @@ static int cell_cpu_setup(struct op_counter_config *cntr)
         u32 cpu = smp_processor_id();
         u32 num_enabled = 0;
         int i;
+        int ret;
 
-        if (spu_cycle_reset)
+        /* Cycle based SPU profiling does not use the performance
+         * counters.  The trace array is configured to collect
+         * the data.
+         */
+        if (profiling_mode == SPU_PROFILING_CYCLES)
                 return 0;
 
         /* There is one performance monitor per processor chip (i.e. node),
@@ -686,7 +923,6 @@ static int cell_cpu_setup(struct op_counter_config *cntr)
         cbe_disable_pm(cpu);
         cbe_disable_pm_interrupts(cpu);
 
-        cbe_write_pm(cpu, pm_interval, 0);
         cbe_write_pm(cpu, pm_start_stop, 0);
         cbe_write_pm(cpu, group_control, pm_regs.group_control);
         cbe_write_pm(cpu, debug_bus_control, pm_regs.debug_bus_control);
@@ -703,7 +939,20 @@ static int cell_cpu_setup(struct op_counter_config *cntr)
          * The pm_rtas_activate_signals will return -EIO if the FW
          * call failed.
          */
-        return pm_rtas_activate_signals(cbe_cpu_to_node(cpu), num_enabled);
+        if (profiling_mode == SPU_PROFILING_EVENTS) {
+                /* For SPU event profiling also need to setup the
+                 * pm interval timer
+                 */
+                ret = pm_rtas_activate_signals(cbe_cpu_to_node(cpu),
+                                               num_enabled+2);
+                /* store PC from debug bus to Trace buffer as often
+                 * as possible (every 10 cycles)
+                 */
+                cbe_write_pm(cpu, pm_interval, NUM_INTERVAL_CYC);
+                return ret;
+        } else
+                return pm_rtas_activate_signals(cbe_cpu_to_node(cpu),
+                                                num_enabled);
 }
 
 #define ENTRIES  303
@@ -885,7 +1134,122 @@ static struct notifier_block cpu_freq_notifier_block = {
 };
 #endif
 
-static int cell_global_start_spu(struct op_counter_config *ctr)
+/*
+ * Note the generic OProfile stop calls do not support returning
+ * an error on stop.  Hence, will not return an error if the FW
+ * calls fail on stop.  Failure to reset the debug bus is not an issue.
+ * Failure to disable the SPU profiling is not an issue.  The FW calls
+ * to enable the performance counters and debug bus will work even if
+ * the hardware was not cleanly reset.
+ */
+static void cell_global_stop_spu_cycles(void)
+{
+        int subfunc, rtn_value;
+        unsigned int lfsr_value;
+        int cpu;
+
+        oprofile_running = 0;
+        smp_wmb();
+
+#ifdef CONFIG_CPU_FREQ
+        cpufreq_unregister_notifier(&cpu_freq_notifier_block,
+                                    CPUFREQ_TRANSITION_NOTIFIER);
+#endif
+
+        for_each_online_cpu(cpu) {
+                if (cbe_get_hw_thread_id(cpu))
+                        continue;
+
+                subfunc = 3;    /*
+                                 * 2 - activate SPU tracing,
+                                 * 3 - deactivate
+                                 */
+                lfsr_value = 0x8f100000;
+
+                rtn_value = rtas_call(spu_rtas_token, 3, 1, NULL,
+                                      subfunc, cbe_cpu_to_node(cpu),
+                                      lfsr_value);
+
+                if (unlikely(rtn_value != 0)) {
+                        printk(KERN_ERR
+                               "%s: rtas call ibm,cbe-spu-perftools " \
+                               "failed, return = %d\n",
+                               __func__, rtn_value);
+                }
+
+                /* Deactivate the signals */
+                pm_rtas_reset_signals(cbe_cpu_to_node(cpu));
+        }
+
+        stop_spu_profiling_cycles();
+}
+
+static void cell_global_stop_spu_events(void)
+{
+        int cpu;
+        oprofile_running = 0;
+
+        stop_spu_profiling_events();
+        smp_wmb();
+
+        for_each_online_cpu(cpu) {
+                if (cbe_get_hw_thread_id(cpu))
+                        continue;
+
+                cbe_sync_irq(cbe_cpu_to_node(cpu));
+                /* Stop the counters */
+                cbe_disable_pm(cpu);
+                cbe_write_pm07_control(cpu, 0, 0);
+
+                /* Deactivate the signals */
+                pm_rtas_reset_signals(cbe_cpu_to_node(cpu));
+
+                /* Deactivate interrupts */
+                cbe_disable_pm_interrupts(cpu);
+        }
+        del_timer_sync(&timer_spu_event_swap);
+}
+
+static void cell_global_stop_ppu(void)
+{
+        int cpu;
+
+        /*
+         * This routine will be called once for the system.
+         * There is one performance monitor per node, so we
+         * only need to perform this function once per node.
+         */
+        del_timer_sync(&timer_virt_cntr);
+        oprofile_running = 0;
+        smp_wmb();
+
+        for_each_online_cpu(cpu) {
+                if (cbe_get_hw_thread_id(cpu))
+                        continue;
+
+                cbe_sync_irq(cbe_cpu_to_node(cpu));
+                /* Stop the counters */
+                cbe_disable_pm(cpu);
+
+                /* Deactivate the signals */
+                pm_rtas_reset_signals(cbe_cpu_to_node(cpu));
+
+                /* Deactivate interrupts */
+                cbe_disable_pm_interrupts(cpu);
+        }
+}
+
+static void cell_global_stop(void)
+{
+        if (profiling_mode == PPU_PROFILING)
+                cell_global_stop_ppu();
+        else if (profiling_mode == SPU_PROFILING_EVENTS)
+                cell_global_stop_spu_events();
+        else
+                cell_global_stop_spu_cycles();
+}
+
+static int cell_global_start_spu_cycles(struct op_counter_config *ctr)
 {
         int subfunc;
         unsigned int lfsr_value;
@@ -951,18 +1315,18 @@ static int cell_global_start_spu(struct op_counter_config *ctr)
 
                 /* start profiling */
                 ret = rtas_call(spu_rtas_token, 3, 1, NULL, subfunc,
-                  cbe_cpu_to_node(cpu), lfsr_value);
+                                cbe_cpu_to_node(cpu), lfsr_value);
 
                 if (unlikely(ret != 0)) {
                         printk(KERN_ERR
-                               "%s: rtas call ibm,cbe-spu-perftools failed, return = %d\n",
-                               __func__, ret);
+                               "%s: rtas call ibm,cbe-spu-perftools failed, " \
+                               "return = %d\n", __func__, ret);
                         rtas_error = -EIO;
                         goto out;
                 }
         }
 
-        rtas_error = start_spu_profiling(spu_cycle_reset);
+        rtas_error = start_spu_profiling_cycles(spu_cycle_reset);
         if (rtas_error)
                 goto out_stop;
 
@@ -970,11 +1334,74 @@ static int cell_global_start_spu(struct op_counter_config *ctr)
         return 0;
 
 out_stop:
-        cell_global_stop_spu();         /* clean up the PMU/debug bus */
+        cell_global_stop_spu_cycles();  /* clean up the PMU/debug bus */
 out:
         return rtas_error;
 }
 
+static int cell_global_start_spu_events(struct op_counter_config *ctr)
+{
+        int cpu;
+        u32 interrupt_mask = 0;
+        int rtn = 0;
+
+        hdw_thread = 0;
+
+        /* spu event profiling, uses the performance counters to generate
+         * an interrupt.  The hardware is setup to store the SPU program
+         * counter into the trace array.  The occurrence mode is used to
+         * enable storing data to the trace buffer.  The bits are set
+         * to send/store the SPU address in the trace buffer.  The debug
+         * bus must be setup to route the SPU program counter onto the
+         * debug bus.  The occurrence data in the trace buffer is not used.
+         */
+
+        /* This routine gets called once for the system.
+         * There is one performance monitor per node, so we
+         * only need to perform this function once per node.
+         */
+
+        for_each_online_cpu(cpu) {
+                if (cbe_get_hw_thread_id(cpu))
+                        continue;
+
+                /*
+                 * Setup SPU event-based profiling.
+                 * Set perf_mon_control bit 0 to a zero before
+                 * enabling spu collection hardware.
+                 *
+                 * Only support one SPU event on one SPU per node.
+                 */
+                if (ctr_enabled & 1) {
+                        cbe_write_ctr(cpu, 0, reset_value[0]);
+                        enable_ctr(cpu, 0, pm_regs.pm07_cntrl);
+                        interrupt_mask |=
+                                CBE_PM_CTR_OVERFLOW_INTR(0);
+                } else {
+                        /* Disable counter */
+                        cbe_write_pm07_control(cpu, 0, 0);
+                }
+
+                cbe_get_and_clear_pm_interrupts(cpu);
+                cbe_enable_pm_interrupts(cpu, hdw_thread, interrupt_mask);
+                cbe_enable_pm(cpu);
+
+                /* clear the trace buffer */
+                cbe_write_pm(cpu, trace_address, 0);
+        }
+
+        /* Start the timer to time slice collecting the event profile
+         * on each of the SPUs.  Note, can collect profile on one SPU
+         * per node at a time.
+         */
+        start_spu_event_swap();
+        start_spu_profiling_events();
+        oprofile_running = 1;
+        smp_wmb();
+
+        return rtn;
+}
+
 static int cell_global_start_ppu(struct op_counter_config *ctr)
 {
         u32 cpu, i;
@@ -994,8 +1421,7 @@ static int cell_global_start_ppu(struct op_counter_config *ctr)
                         if (ctr_enabled & (1 << i)) {
                                 cbe_write_ctr(cpu, i, reset_value[i]);
                                 enable_ctr(cpu, i, pm_regs.pm07_cntrl);
-                                interrupt_mask |=
-                                    CBE_PM_CTR_OVERFLOW_INTR(i);
+                                interrupt_mask |= CBE_PM_CTR_OVERFLOW_INTR(i);
                         } else {
                                 /* Disable counter */
                                 cbe_write_pm07_control(cpu, i, 0);
@@ -1024,99 +1450,162 @@ static int cell_global_start_ppu(struct op_counter_config *ctr)
 
 static int cell_global_start(struct op_counter_config *ctr)
 {
-        if (spu_cycle_reset)
-                return cell_global_start_spu(ctr);
+        if (profiling_mode == SPU_PROFILING_CYCLES)
+                return cell_global_start_spu_cycles(ctr);
+        else if (profiling_mode == SPU_PROFILING_EVENTS)
+                return cell_global_start_spu_events(ctr);
         else
                 return cell_global_start_ppu(ctr);
 }
 
-/*
- * Note the generic OProfile stop calls do not support returning
- * an error on stop.  Hence, will not return an error if the FW
- * calls fail on stop.  Failure to reset the debug bus is not an issue.
- * Failure to disable the SPU profiling is not an issue.  The FW calls
- * to enable the performance counters and debug bus will work even if
- * the hardware was not cleanly reset.
+
+/* The SPU interrupt handler
+ *
+ * SPU event profiling works as follows:
+ * The pm_signal[0] holds the one SPU event to be measured.  It is routed on
+ * the debug bus using word 0 or 1.  The value of pm_signal[1] and
+ * pm_signal[2] contain the necessary events to route the SPU program
+ * counter for the selected SPU onto the debug bus using words 2 and 3.
+ * The pm_interval register is setup to write the SPU PC value into the
+ * trace buffer at the maximum rate possible.  The trace buffer is configured
+ * to store the PCs, wrapping when it is full.  The performance counter is
+ * intialized to the max hardware count minus the number of events, N, between
+ * samples.  Once the N events have occured, a HW counter overflow occurs
+ * causing the generation of a HW counter interrupt which also stops the
+ * writing of the SPU PC values to the trace buffer.  Hence the last PC
+ * written to the trace buffer is the SPU PC that we want.  Unfortunately,
+ * we have to read from the beginning of the trace buffer to get to the
+ * last value written.  We just hope the PPU has nothing better to do then
+ * service this interrupt. The PC for the specific SPU being profiled is
+ * extracted from the trace buffer processed and stored.  The trace buffer
+ * is cleared, interrupts are cleared, the counter is reset to max - N.
+ * A kernel timer is used to periodically call the routine spu_evnt_swap()
+ * to switch to the next physical SPU in the node to profile in round robbin
+ * order.  This way data is collected for all SPUs on the node. It does mean
+ * that we need to use a relatively small value of N to ensure enough samples
+ * on each SPU are collected each SPU is being profiled 1/8 of the time.
+ * It may also be necessary to use a longer sample collection period.
  */
-static void cell_global_stop_spu(void)
+static void cell_handle_interrupt_spu(struct pt_regs *regs,
+                                      struct op_counter_config *ctr)
 {
-        int subfunc, rtn_value;
-        unsigned int lfsr_value;
-        int cpu;
+        u32 cpu, cpu_tmp;
+        u64 trace_entry;
+        u32 interrupt_mask;
+        u64 trace_buffer[2];
+        u64 last_trace_buffer;
+        u32 sample;
+        u32 trace_addr;
+        unsigned long sample_array_lock_flags;
+        int spu_num;
+        unsigned long flags;
 
-        oprofile_running = 0;
+        /* Make sure spu event interrupt handler and spu event swap
+         * don't access the counters simultaneously.
+         */
+        cpu = smp_processor_id();
+        spin_lock_irqsave(&cntr_lock, flags);
 
-#ifdef CONFIG_CPU_FREQ
-        cpufreq_unregister_notifier(&cpu_freq_notifier_block,
-                                    CPUFREQ_TRANSITION_NOTIFIER);
-#endif
+        cpu_tmp = cpu;
+        cbe_disable_pm(cpu);
 
-        for_each_online_cpu(cpu) {
-                if (cbe_get_hw_thread_id(cpu))
-                        continue;
+        interrupt_mask = cbe_get_and_clear_pm_interrupts(cpu);
 
-                subfunc = 3;    /*
-                                 * 2 - activate SPU tracing,
-                                 * 3 - deactivate
-                                 */
-                lfsr_value = 0x8f100000;
+        sample = 0xABCDEF;
+        trace_entry = 0xfedcba;
+        last_trace_buffer = 0xdeadbeaf;
 
-                rtn_value = rtas_call(spu_rtas_token, 3, 1, NULL,
-                                      subfunc, cbe_cpu_to_node(cpu),
-                                      lfsr_value);
+        if ((oprofile_running == 1) && (interrupt_mask != 0)) {
+                /* disable writes to trace buff */
+                cbe_write_pm(cpu, pm_interval, 0);
 
-                if (unlikely(rtn_value != 0)) {
-                        printk(KERN_ERR
-                               "%s: rtas call ibm,cbe-spu-perftools failed, return = %d\n",
-                               __func__, rtn_value);
+                /* only have one perf cntr being used, cntr 0 */
+                if ((interrupt_mask & CBE_PM_CTR_OVERFLOW_INTR(0))
+                    && ctr[0].enabled)
+                        /* The SPU PC values will be read
+                         * from the trace buffer, reset counter
+                         */
+
+                        cbe_write_ctr(cpu, 0, reset_value[0]);
+
+                trace_addr = cbe_read_pm(cpu, trace_address);
+
+                while (!(trace_addr & CBE_PM_TRACE_BUF_EMPTY)) {
+                        /* There is data in the trace buffer to process
+                         * Read the buffer until you get to the last
+                         * entry.  This is the value we want.
+                         */
+
+                        cbe_read_trace_buffer(cpu, trace_buffer);
+                        trace_addr = cbe_read_pm(cpu, trace_address);
                 }
 
-                /* Deactivate the signals */
-                pm_rtas_reset_signals(cbe_cpu_to_node(cpu));
-        }
+                /* SPU Address 16 bit count format for 128 bit
+                 * HW trace buffer is used for the SPU PC storage
+                 *    HDR bits          0:15
+                 *    SPU Addr 0 bits   16:31
+                 *    SPU Addr 1 bits   32:47
+                 *    unused bits       48:127
+                 *
+                 * HDR: bit4 = 1 SPU Address 0 valid
+                 * HDR: bit5 = 1 SPU Address 1 valid
+                 *  - unfortunately, the valid bits don't seem to work
+                 *
+                 * Note trace_buffer[0] holds bits 0:63 of the HW
+                 * trace buffer, trace_buffer[1] holds bits 64:127
+                 */
 
-        stop_spu_profiling();
-}
+                trace_entry = trace_buffer[0]
+                        & 0x00000000FFFF0000;
 
-static void cell_global_stop_ppu(void)
-{
-        int cpu;
+                /* only top 16 of the 18 bit SPU PC address
+                 * is stored in trace buffer, hence shift right
+                 * by 16 -2 bits */
+                sample = trace_entry >> 14;
+                last_trace_buffer = trace_buffer[0];
 
-        /*
-         * This routine will be called once for the system.
-         * There is one performance monitor per node, so we
-         * only need to perform this function once per node.
-         */
-        del_timer_sync(&timer_virt_cntr);
-        oprofile_running = 0;
-        smp_wmb();
+                spu_num = spu_evnt_phys_spu_indx
+                        + (cbe_cpu_to_node(cpu) * NUM_SPUS_PER_NODE);
 
-        for_each_online_cpu(cpu) {
-                if (cbe_get_hw_thread_id(cpu))
-                        continue;
+                /* make sure only one process at a time is calling
+                 * spu_sync_buffer()
+                 */
+                spin_lock_irqsave(&oprof_spu_smpl_arry_lck,
+                                  sample_array_lock_flags);
+                spu_sync_buffer(spu_num, &sample, 1);
+                spin_unlock_irqrestore(&oprof_spu_smpl_arry_lck,
+                                       sample_array_lock_flags);
 
-                cbe_sync_irq(cbe_cpu_to_node(cpu));
-                /* Stop the counters */
-                cbe_disable_pm(cpu);
+                smp_wmb();    /* insure spu event buffer updates are written
+                               * don't want events intermingled... */
 
-                /* Deactivate the signals */
-                pm_rtas_reset_signals(cbe_cpu_to_node(cpu));
+                /* The counters were frozen by the interrupt.
+                 * Reenable the interrupt and restart the counters.
+                 */
+                cbe_write_pm(cpu, pm_interval, NUM_INTERVAL_CYC);
+                cbe_enable_pm_interrupts(cpu, hdw_thread,
+                                         virt_cntr_inter_mask);
 
-                /* Deactivate interrupts */
-                cbe_disable_pm_interrupts(cpu);
-        }
-}
+                /* clear the trace buffer, re-enable writes to trace buff */
+                cbe_write_pm(cpu, trace_address, 0);
+                cbe_write_pm(cpu, pm_interval, NUM_INTERVAL_CYC);
 
-static void cell_global_stop(void)
-{
-        if (spu_cycle_reset)
-                cell_global_stop_spu();
-        else
-                cell_global_stop_ppu();
+                /* The writes to the various performance counters only writes
+                 * to a latch.  The new values (interrupt setting bits, reset
+                 * counter value etc.) are not copied to the actual registers
+                 * until the performance monitor is enabled.  In order to get
+                 * this to work as desired, the permormance monitor needs to
+                 * be disabled while writing to the latches.  This is a
+                 * HW design issue.
+                 */
+                write_pm_cntrl(cpu);
+                cbe_enable_pm(cpu);
+        }
+        spin_unlock_irqrestore(&cntr_lock, flags);
 }
 
-static void cell_handle_interrupt(struct pt_regs *regs,
-                                struct op_counter_config *ctr)
+static void cell_handle_interrupt_ppu(struct pt_regs *regs,
+                                      struct op_counter_config *ctr)
 {
         u32 cpu;
         u64 pc;
@@ -1132,7 +1621,7 @@ static void cell_handle_interrupt(struct pt_regs *regs,
          * routine are not running at the same time. See the
          * cell_virtual_cntr() routine for additional comments.
          */
-        spin_lock_irqsave(&virt_cntr_lock, flags);
+        spin_lock_irqsave(&cntr_lock, flags);
 
         /*
          * Need to disable and reenable the performance counters
@@ -1185,7 +1674,16 @@ static void cell_handle_interrupt(struct pt_regs *regs,
                  */
                 cbe_enable_pm(cpu);
         }
-        spin_unlock_irqrestore(&virt_cntr_lock, flags);
+        spin_unlock_irqrestore(&cntr_lock, flags);
+}
+
+static void cell_handle_interrupt(struct pt_regs *regs,
+                                  struct op_counter_config *ctr)
+{
+        if (profiling_mode == PPU_PROFILING)
+                cell_handle_interrupt_ppu(regs, ctr);
+        else
+                cell_handle_interrupt_spu(regs, ctr);
 }
 
 /*
@@ -1195,7 +1693,8 @@ static void cell_handle_interrupt(struct pt_regs *regs,
  */
 static int cell_sync_start(void)
 {
-        if (spu_cycle_reset)
+        if ((profiling_mode == SPU_PROFILING_CYCLES) ||
+            (profiling_mode == SPU_PROFILING_EVENTS))
                 return spu_sync_start();
         else
                 return DO_GENERIC_SYNC;
@@ -1203,7 +1702,8 @@ static int cell_sync_start(void)
 
 static int cell_sync_stop(void)
 {
-        if (spu_cycle_reset)
+        if ((profiling_mode == SPU_PROFILING_CYCLES) ||
+            (profiling_mode == SPU_PROFILING_EVENTS))
                 return spu_sync_stop();
         else
                 return 1;
diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h
index 9fa9dcdf344b..e02a359d2aa5 100644
--- a/arch/x86/include/asm/bitops.h
+++ b/arch/x86/include/asm/bitops.h
@@ -300,7 +300,7 @@ static inline int test_and_change_bit(int nr, volatile unsigned long *addr)
         return oldbit;
 }
 
-static inline int constant_test_bit(int nr, const volatile unsigned long *addr)
+static inline int constant_test_bit(unsigned int nr, const volatile unsigned long *addr)
 {
         return ((1UL << (nr % BITS_PER_LONG)) &
                 (((unsigned long *)addr)[nr / BITS_PER_LONG])) != 0;
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 29dc0c89d4af..d37593c2f438 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -47,7 +47,7 @@
 #endif
 
 static int __initdata acpi_force = 0;
-
+u32 acpi_rsdt_forced;
 #ifdef  CONFIG_ACPI
 int acpi_disabled = 0;
 #else
@@ -1374,6 +1374,17 @@ static void __init acpi_process_madt(void)
                                "Invalid BIOS MADT, disabling ACPI\n");
                         disable_acpi();
                 }
+        } else {
+                /*
+                 * ACPI found no MADT, and so ACPI wants UP PIC mode.
+                 * In the event an MPS table was found, forget it.
+                 * Boot with "acpi=off" to use MPS on such a system.
+                 */
+                if (smp_found_config) {
+                        printk(KERN_WARNING PREFIX
+                                "No APIC-table, disabling MPS\n");
+                        smp_found_config = 0;
+                }
         }
 
         /*
@@ -1809,6 +1820,10 @@ static int __init parse_acpi(char *arg)
                         disable_acpi();
                 acpi_ht = 1;
         }
+        /* acpi=rsdt use RSDT instead of XSDT */
+        else if (strcmp(arg, "rsdt") == 0) {
+                acpi_rsdt_forced = 1;
+        }
         /* "acpi=noirq" disables ACPI interrupt routing */
         else if (strcmp(arg, "noirq") == 0) {
                 acpi_noirq_set();
diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c
index c2502eb9aa83..a4805b3b4095 100644
--- a/arch/x86/kernel/acpi/cstate.c
+++ b/arch/x86/kernel/acpi/cstate.c
@@ -56,6 +56,7 @@ static struct cstate_entry *cpu_cstate_entry;	/* per CPU ptr */
 static short mwait_supported[ACPI_PROCESSOR_MAX_POWER];
 
 #define MWAIT_SUBSTATE_MASK     (0xf)
+#define MWAIT_CSTATE_MASK       (0xf)
 #define MWAIT_SUBSTATE_SIZE     (4)
 
 #define CPUID_MWAIT_LEAF (5)
@@ -98,7 +99,8 @@ int acpi_processor_ffh_cstate_probe(unsigned int cpu,
         cpuid(CPUID_MWAIT_LEAF, &eax, &ebx, &ecx, &edx);
 
         /* Check whether this particular cx_type (in CST) is supported or not */
-        cstate_type = (cx->address >> MWAIT_SUBSTATE_SIZE) + 1;
+        cstate_type = ((cx->address >> MWAIT_SUBSTATE_SIZE) &
+                        MWAIT_CSTATE_MASK) + 1;
         edx_part = edx >> (cstate_type * MWAIT_SUBSTATE_SIZE);
         num_cstate_subtype = edx_part & MWAIT_SUBSTATE_MASK;
 
diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
index 806b4e9051b4..707c1f6f95fa 100644
--- a/arch/x86/kernel/acpi/sleep.c
+++ b/arch/x86/kernel/acpi/sleep.c
@@ -159,6 +159,8 @@ static int __init acpi_sleep_setup(char *str)
 #endif
                 if (strncmp(str, "old_ordering", 12) == 0)
                         acpi_old_suspend_ordering();
+                if (strncmp(str, "s4_nonvs", 8) == 0)
+                        acpi_s4_no_nvs();
                 str = strchr(str, ',');
                 if (str != NULL)
                         str += strspn(str, ", \t");
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 65a13943e098..e85826829cf2 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -665,6 +665,27 @@ void __init e820_mark_nosave_regions(unsigned long limit_pfn)
 }
 #endif
 
+#ifdef CONFIG_HIBERNATION
+/**
+ * Mark ACPI NVS memory region, so that we can save/restore it during
+ * hibernation and the subsequent resume.
+ */
+static int __init e820_mark_nvs_memory(void)
+{
+        int i;
+
+        for (i = 0; i < e820.nr_map; i++) {
+                struct e820entry *ei = &e820.map[i];
+
+                if (ei->type == E820_NVS)
+                        hibernate_nvs_register(ei->addr, ei->size);
+        }
+
+        return 0;
+}
+core_initcall(e820_mark_nvs_memory);
+#endif
+
 /*
  * Early reserved memory areas.
  */
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 744aa7fc49d5..76b8cd953dee 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -201,6 +201,12 @@ struct chipset {
         void (*f)(int num, int slot, int func);
 };
 
+/*
+ * Only works for devices on the root bus. If you add any devices
+ * not on bus 0 readd another loop level in early_quirks(). But
+ * be careful because at least the Nvidia quirk here relies on
+ * only matching on bus 0.
+ */
 static struct chipset early_qrk[] __initdata = {
         { PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
           PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, QFLAG_APPLY_ONCE, nvidia_bugs },
@@ -267,17 +273,17 @@ static int __init check_dev_quirk(int num, int slot, int func)
 
 void __init early_quirks(void)
 {
-        int num, slot, func;
+        int slot, func;
 
         if (!early_pci_allowed())
                 return;
 
         /* Poor man's PCI discovery */
-        for (num = 0; num < 32; num++)
-                for (slot = 0; slot < 32; slot++)
-                        for (func = 0; func < 8; func++) {
-                                /* Only probe function 0 on single fn devices */
-                                if (check_dev_quirk(num, slot, func))
-                                        break;
-                        }
+        /* Only scan the root bus */
+        for (slot = 0; slot < 32; slot++)
+                for (func = 0; func < 8; func++) {
+                        /* Only probe function 0 on single fn devices */
+                        if (check_dev_quirk(0, slot, func))
+                                break;
+                }
 }
diff --git a/arch/x86/oprofile/op_model_amd.c b/arch/x86/oprofile/op_model_amd.c
index 98658f25f542..8fdf06e4edf9 100644
--- a/arch/x86/oprofile/op_model_amd.c
+++ b/arch/x86/oprofile/op_model_amd.c
@@ -2,7 +2,7 @@
  * @file op_model_amd.c
  * athlon / K7 / K8 / Family 10h model-specific MSR operations
  *
- * @remark Copyright 2002-2008 OProfile authors
+ * @remark Copyright 2002-2009 OProfile authors
  * @remark Read the file COPYING
  *
  * @author John Levon
@@ -10,7 +10,7 @@
  * @author Graydon Hoare
  * @author Robert Richter <robert.richter@amd.com>
  * @author Barry Kasindorf
-*/
+ */
 
 #include <linux/oprofile.h>
 #include <linux/device.h>
@@ -60,53 +60,10 @@ static unsigned long reset_value[NUM_COUNTERS];
 #define IBS_OP_LOW_VALID_BIT            (1ULL<<18)      /* bit 18 */
 #define IBS_OP_LOW_ENABLE               (1ULL<<17)      /* bit 17 */
 
-/* Codes used in cpu_buffer.c */
-/* This produces duplicate code, need to be fixed */
-#define IBS_FETCH_BEGIN 3
-#define IBS_OP_BEGIN    4
-
-/*
- * The function interface needs to be fixed, something like add
- * data. Should then be added to linux/oprofile.h.
- */
-extern void
-oprofile_add_ibs_sample(struct pt_regs * const regs,
-                        unsigned int * const ibs_sample, int ibs_code);
-
-struct ibs_fetch_sample {
-        /* MSRC001_1031 IBS Fetch Linear Address Register */
-        unsigned int ibs_fetch_lin_addr_low;
-        unsigned int ibs_fetch_lin_addr_high;
-        /* MSRC001_1030 IBS Fetch Control Register */
-        unsigned int ibs_fetch_ctl_low;
-        unsigned int ibs_fetch_ctl_high;
-        /* MSRC001_1032 IBS Fetch Physical Address Register */
-        unsigned int ibs_fetch_phys_addr_low;
-        unsigned int ibs_fetch_phys_addr_high;
-};
-
-struct ibs_op_sample {
-        /* MSRC001_1034 IBS Op Logical Address Register (IbsRIP) */
-        unsigned int ibs_op_rip_low;
-        unsigned int ibs_op_rip_high;
-        /* MSRC001_1035 IBS Op Data Register */
-        unsigned int ibs_op_data1_low;
-        unsigned int ibs_op_data1_high;
-        /* MSRC001_1036 IBS Op Data 2 Register */
-        unsigned int ibs_op_data2_low;
-        unsigned int ibs_op_data2_high;
-        /* MSRC001_1037 IBS Op Data 3 Register */
-        unsigned int ibs_op_data3_low;
-        unsigned int ibs_op_data3_high;
-        /* MSRC001_1038 IBS DC Linear Address Register (IbsDcLinAd) */
-        unsigned int ibs_dc_linear_low;
-        unsigned int ibs_dc_linear_high;
-        /* MSRC001_1039 IBS DC Physical Address Register (IbsDcPhysAd) */
-        unsigned int ibs_dc_phys_low;
-        unsigned int ibs_dc_phys_high;
-};
+#define IBS_FETCH_SIZE  6
+#define IBS_OP_SIZE     12
 
-static int ibs_allowed; /* AMD Family10h and later */
+static int has_ibs;     /* AMD Family10h and later */
 
 struct op_ibs_config {
         unsigned long op_enabled;
@@ -197,31 +154,29 @@ static inline int
 op_amd_handle_ibs(struct pt_regs * const regs,
                   struct op_msrs const * const msrs)
 {
-        unsigned int low, high;
-        struct ibs_fetch_sample ibs_fetch;
-        struct ibs_op_sample ibs_op;
+        u32 low, high;
+        u64 msr;
+        struct op_entry entry;
 
-        if (!ibs_allowed)
+        if (!has_ibs)
                 return 1;
 
         if (ibs_config.fetch_enabled) {
                 rdmsr(MSR_AMD64_IBSFETCHCTL, low, high);
                 if (high & IBS_FETCH_HIGH_VALID_BIT) {
-                        ibs_fetch.ibs_fetch_ctl_high = high;
-                        ibs_fetch.ibs_fetch_ctl_low = low;
-                        rdmsr(MSR_AMD64_IBSFETCHLINAD, low, high);
-                        ibs_fetch.ibs_fetch_lin_addr_high = high;
-                        ibs_fetch.ibs_fetch_lin_addr_low = low;
-                        rdmsr(MSR_AMD64_IBSFETCHPHYSAD, low, high);
-                        ibs_fetch.ibs_fetch_phys_addr_high = high;
-                        ibs_fetch.ibs_fetch_phys_addr_low = low;
-
-                        oprofile_add_ibs_sample(regs,
-                                                (unsigned int *)&ibs_fetch,
-                                                IBS_FETCH_BEGIN);
+                        rdmsrl(MSR_AMD64_IBSFETCHLINAD, msr);
+                        oprofile_write_reserve(&entry, regs, msr,
+                                               IBS_FETCH_CODE, IBS_FETCH_SIZE);
+                        oprofile_add_data(&entry, (u32)msr);
+                        oprofile_add_data(&entry, (u32)(msr >> 32));
+                        oprofile_add_data(&entry, low);
+                        oprofile_add_data(&entry, high);
+                        rdmsrl(MSR_AMD64_IBSFETCHPHYSAD, msr);
+                        oprofile_add_data(&entry, (u32)msr);
+                        oprofile_add_data(&entry, (u32)(msr >> 32));
+                        oprofile_write_commit(&entry);
 
                         /* reenable the IRQ */
-                        rdmsr(MSR_AMD64_IBSFETCHCTL, low, high);
                         high &= ~IBS_FETCH_HIGH_VALID_BIT;
                         high |= IBS_FETCH_HIGH_ENABLE;
                         low &= IBS_FETCH_LOW_MAX_CNT_MASK;
@@ -232,30 +187,29 @@ op_amd_handle_ibs(struct pt_regs * const regs,
         if (ibs_config.op_enabled) {
                 rdmsr(MSR_AMD64_IBSOPCTL, low, high);
                 if (low & IBS_OP_LOW_VALID_BIT) {
-                        rdmsr(MSR_AMD64_IBSOPRIP, low, high);
-                        ibs_op.ibs_op_rip_low = low;
-                        ibs_op.ibs_op_rip_high = high;
-                        rdmsr(MSR_AMD64_IBSOPDATA, low, high);
-                        ibs_op.ibs_op_data1_low = low;
-                        ibs_op.ibs_op_data1_high = high;
-                        rdmsr(MSR_AMD64_IBSOPDATA2, low, high);
-                        ibs_op.ibs_op_data2_low = low;
-                        ibs_op.ibs_op_data2_high = high;
-                        rdmsr(MSR_AMD64_IBSOPDATA3, low, high);
-                        ibs_op.ibs_op_data3_low = low;
-                        ibs_op.ibs_op_data3_high = high;
-                        rdmsr(MSR_AMD64_IBSDCLINAD, low, high);
-                        ibs_op.ibs_dc_linear_low = low;
-                        ibs_op.ibs_dc_linear_high = high;
-                        rdmsr(MSR_AMD64_IBSDCPHYSAD, low, high);
-                        ibs_op.ibs_dc_phys_low = low;
-                        ibs_op.ibs_dc_phys_high = high;
+                        rdmsrl(MSR_AMD64_IBSOPRIP, msr);
+                        oprofile_write_reserve(&entry, regs, msr,
+                                               IBS_OP_CODE, IBS_OP_SIZE);
+                        oprofile_add_data(&entry, (u32)msr);
+                        oprofile_add_data(&entry, (u32)(msr >> 32));
+                        rdmsrl(MSR_AMD64_IBSOPDATA, msr);
+                        oprofile_add_data(&entry, (u32)msr);
+                        oprofile_add_data(&entry, (u32)(msr >> 32));
+                        rdmsrl(MSR_AMD64_IBSOPDATA2, msr);
+                        oprofile_add_data(&entry, (u32)msr);
+                        oprofile_add_data(&entry, (u32)(msr >> 32));
+                        rdmsrl(MSR_AMD64_IBSOPDATA3, msr);
+                        oprofile_add_data(&entry, (u32)msr);
+                        oprofile_add_data(&entry, (u32)(msr >> 32));
+                        rdmsrl(MSR_AMD64_IBSDCLINAD, msr);
+                        oprofile_add_data(&entry, (u32)msr);
+                        oprofile_add_data(&entry, (u32)(msr >> 32));
+                        rdmsrl(MSR_AMD64_IBSDCPHYSAD, msr);
+                        oprofile_add_data(&entry, (u32)msr);
+                        oprofile_add_data(&entry, (u32)(msr >> 32));
+                        oprofile_write_commit(&entry);
 
                         /* reenable the IRQ */
-                        oprofile_add_ibs_sample(regs,
-                                                (unsigned int *)&ibs_op,
-                                                IBS_OP_BEGIN);
-                        rdmsr(MSR_AMD64_IBSOPCTL, low, high);
                         high = 0;
                         low &= ~IBS_OP_LOW_VALID_BIT;
                         low |= IBS_OP_LOW_ENABLE;
@@ -305,14 +259,14 @@ static void op_amd_start(struct op_msrs const * const msrs)
         }
 
 #ifdef CONFIG_OPROFILE_IBS
-        if (ibs_allowed && ibs_config.fetch_enabled) {
+        if (has_ibs && ibs_config.fetch_enabled) {
                 low = (ibs_config.max_cnt_fetch >> 4) & 0xFFFF;
                 high = ((ibs_config.rand_en & 0x1) << 25) /* bit 57 */
                         + IBS_FETCH_HIGH_ENABLE;
                 wrmsr(MSR_AMD64_IBSFETCHCTL, low, high);
         }
 
-        if (ibs_allowed && ibs_config.op_enabled) {
+        if (has_ibs && ibs_config.op_enabled) {
                 low = ((ibs_config.max_cnt_op >> 4) & 0xFFFF)
                         + ((ibs_config.dispatched_ops & 0x1) << 19) /* bit 19 */
                         + IBS_OP_LOW_ENABLE;
@@ -341,14 +295,14 @@ static void op_amd_stop(struct op_msrs const * const msrs)
         }
 
 #ifdef CONFIG_OPROFILE_IBS
-        if (ibs_allowed && ibs_config.fetch_enabled) {
+        if (has_ibs && ibs_config.fetch_enabled) {
                 /* clear max count and enable */
                 low = 0;
                 high = 0;
                 wrmsr(MSR_AMD64_IBSFETCHCTL, low, high);
         }
 
-        if (ibs_allowed && ibs_config.op_enabled) {
+        if (has_ibs && ibs_config.op_enabled) {
                 /* clear max count and enable */
                 low = 0;
                 high = 0;
@@ -409,6 +363,7 @@ static int init_ibs_nmi(void)
                                        | IBSCTL_LVTOFFSETVAL);
                 pci_read_config_dword(cpu_cfg, IBSCTL, &value);
                 if (value != (ibs_eilvt_off | IBSCTL_LVTOFFSETVAL)) {
+                        pci_dev_put(cpu_cfg);
                         printk(KERN_DEBUG "Failed to setup IBS LVT offset, "
                                 "IBSCTL = 0x%08x", value);
                         return 1;
@@ -436,20 +391,20 @@ static int init_ibs_nmi(void)
 /* uninitialize the APIC for the IBS interrupts if needed */
 static void clear_ibs_nmi(void)
 {
-        if (ibs_allowed)
+        if (has_ibs)
                 on_each_cpu(apic_clear_ibs_nmi_per_cpu, NULL, 1);
 }
 
 /* initialize the APIC for the IBS interrupts if available */
 static void ibs_init(void)
 {
-        ibs_allowed = boot_cpu_has(X86_FEATURE_IBS);
+        has_ibs = boot_cpu_has(X86_FEATURE_IBS);
 
-        if (!ibs_allowed)
+        if (!has_ibs)
                 return;
 
         if (init_ibs_nmi()) {
-                ibs_allowed = 0;
+                has_ibs = 0;
                 return;
         }
 
@@ -458,7 +413,7 @@ static void ibs_init(void)
 
 static void ibs_exit(void)
 {
-        if (!ibs_allowed)
+        if (!has_ibs)
                 return;
 
         clear_ibs_nmi();
@@ -478,7 +433,7 @@ static int setup_ibs_files(struct super_block *sb, struct dentry *root)
         if (ret)
                 return ret;
 
-        if (!ibs_allowed)
+        if (!has_ibs)
                 return ret;
 
         /* model specific files */
diff --git a/crypto/async_tx/async_tx.c b/crypto/async_tx/async_tx.c
index dcbf1be149f3..f21147f3626a 100644
--- a/crypto/async_tx/async_tx.c
+++ b/crypto/async_tx/async_tx.c
@@ -28,351 +28,18 @@
 #include <linux/async_tx.h>
 
 #ifdef CONFIG_DMA_ENGINE
-static enum dma_state_client
-dma_channel_add_remove(struct dma_client *client,
-        struct dma_chan *chan, enum dma_state state);
-
-static struct dma_client async_tx_dma = {
-        .event_callback = dma_channel_add_remove,
-        /* .cap_mask == 0 defaults to all channels */
-};
-
-/**
- * dma_cap_mask_all - enable iteration over all operation types
- */
-static dma_cap_mask_t dma_cap_mask_all;
-
-/**
- * chan_ref_percpu - tracks channel allocations per core/opertion
- */
-struct chan_ref_percpu {
-        struct dma_chan_ref *ref;
-};
-
-static int channel_table_initialized;
-static struct chan_ref_percpu *channel_table[DMA_TX_TYPE_END];
-
-/**
- * async_tx_lock - protect modification of async_tx_master_list and serialize
- *      rebalance operations
- */
-static spinlock_t async_tx_lock;
-
-static LIST_HEAD(async_tx_master_list);
-
-/* async_tx_issue_pending_all - start all transactions on all channels */
-void async_tx_issue_pending_all(void)
-{
-        struct dma_chan_ref *ref;
-
-        rcu_read_lock();
-        list_for_each_entry_rcu(ref, &async_tx_master_list, node)
-                ref->chan->device->device_issue_pending(ref->chan);
-        rcu_read_unlock();
-}
-EXPORT_SYMBOL_GPL(async_tx_issue_pending_all);
-
-/* dma_wait_for_async_tx - spin wait for a transcation to complete
- * @tx: transaction to wait on
- */
-enum dma_status
-dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx)
-{
-        enum dma_status status;
-        struct dma_async_tx_descriptor *iter;
-        struct dma_async_tx_descriptor *parent;
-
-        if (!tx)
-                return DMA_SUCCESS;
-
-        /* poll through the dependency chain, return when tx is complete */
-        do {
-                iter = tx;
-
-                /* find the root of the unsubmitted dependency chain */
-                do {
-                        parent = iter->parent;
-                        if (!parent)
-                                break;
-                        else
-                                iter = parent;
-                } while (parent);
-
-                /* there is a small window for ->parent == NULL and
-                 * ->cookie == -EBUSY
-                 */
-                while (iter->cookie == -EBUSY)
-                        cpu_relax();
-
-                status = dma_sync_wait(iter->chan, iter->cookie);
-        } while (status == DMA_IN_PROGRESS || (iter != tx));
-
-        return status;
-}
-EXPORT_SYMBOL_GPL(dma_wait_for_async_tx);
-
-/* async_tx_run_dependencies - helper routine for dma drivers to process
- *      (start) dependent operations on their target channel
- * @tx: transaction with dependencies
- */
-void async_tx_run_dependencies(struct dma_async_tx_descriptor *tx)
-{
-        struct dma_async_tx_descriptor *dep = tx->next;
-        struct dma_async_tx_descriptor *dep_next;
-        struct dma_chan *chan;
-
-        if (!dep)
-                return;
-
-        chan = dep->chan;
-
-        /* keep submitting up until a channel switch is detected
-         * in that case we will be called again as a result of
-         * processing the interrupt from async_tx_channel_switch
-         */
-        for (; dep; dep = dep_next) {
-                spin_lock_bh(&dep->lock);
-                dep->parent = NULL;
-                dep_next = dep->next;
-                if (dep_next && dep_next->chan == chan)
-                        dep->next = NULL; /* ->next will be submitted */
-                else
-                        dep_next = NULL; /* submit current dep and terminate */
-                spin_unlock_bh(&dep->lock);
-
-                dep->tx_submit(dep);
-        }
-
-        chan->device->device_issue_pending(chan);
-}
-EXPORT_SYMBOL_GPL(async_tx_run_dependencies);
-
-static void
-free_dma_chan_ref(struct rcu_head *rcu)
-{
-        struct dma_chan_ref *ref;
-        ref = container_of(rcu, struct dma_chan_ref, rcu);
-        kfree(ref);
-}
-
-static void
-init_dma_chan_ref(struct dma_chan_ref *ref, struct dma_chan *chan)
-{
-        INIT_LIST_HEAD(&ref->node);
-        INIT_RCU_HEAD(&ref->rcu);
-        ref->chan = chan;
-        atomic_set(&ref->count, 0);
-}
-
-/**
- * get_chan_ref_by_cap - returns the nth channel of the given capability
- *      defaults to returning the channel with the desired capability and the
- *      lowest reference count if the index can not be satisfied
- * @cap: capability to match
- * @index: nth channel desired, passing -1 has the effect of forcing the
- *  default return value
- */
-static struct dma_chan_ref *
-get_chan_ref_by_cap(enum dma_transaction_type cap, int index)
-{
-        struct dma_chan_ref *ret_ref = NULL, *min_ref = NULL, *ref;
-
-        rcu_read_lock();
-        list_for_each_entry_rcu(ref, &async_tx_master_list, node)
-                if (dma_has_cap(cap, ref->chan->device->cap_mask)) {
-                        if (!min_ref)
-                                min_ref = ref;
-                        else if (atomic_read(&ref->count) <
-                                atomic_read(&min_ref->count))
-                                min_ref = ref;
-
-                        if (index-- == 0) {
-                                ret_ref = ref;
-                                break;
-                        }
-                }
-        rcu_read_unlock();
-
-        if (!ret_ref)
-                ret_ref = min_ref;
-
-        if (ret_ref)
-                atomic_inc(&ret_ref->count);
-
-        return ret_ref;
-}
-
-/**
- * async_tx_rebalance - redistribute the available channels, optimize
- * for cpu isolation in the SMP case, and opertaion isolation in the
- * uniprocessor case
- */
-static void async_tx_rebalance(void)
-{
-        int cpu, cap, cpu_idx = 0;
-        unsigned long flags;
-
-        if (!channel_table_initialized)
-                return;
-
-        spin_lock_irqsave(&async_tx_lock, flags);
-
-        /* undo the last distribution */
-        for_each_dma_cap_mask(cap, dma_cap_mask_all)
-                for_each_possible_cpu(cpu) {
-                        struct dma_chan_ref *ref =
-                                per_cpu_ptr(channel_table[cap], cpu)->ref;
-                        if (ref) {
-                                atomic_set(&ref->count, 0);
-                                per_cpu_ptr(channel_table[cap], cpu)->ref =
-                                                                        NULL;
-                        }
-                }
-
-        for_each_dma_cap_mask(cap, dma_cap_mask_all)
-                for_each_online_cpu(cpu) {
-                        struct dma_chan_ref *new;
-                        if (NR_CPUS > 1)
-                                new = get_chan_ref_by_cap(cap, cpu_idx++);
-                        else
-                                new = get_chan_ref_by_cap(cap, -1);
-
-                        per_cpu_ptr(channel_table[cap], cpu)->ref = new;
-                }
-
-        spin_unlock_irqrestore(&async_tx_lock, flags);
-}
-
-static enum dma_state_client
-dma_channel_add_remove(struct dma_client *client,
-        struct dma_chan *chan, enum dma_state state)
-{
-        unsigned long found, flags;
-        struct dma_chan_ref *master_ref, *ref;
-        enum dma_state_client ack = DMA_DUP; /* default: take no action */
-
-        switch (state) {
-        case DMA_RESOURCE_AVAILABLE:
-                found = 0;
-                rcu_read_lock();
-                list_for_each_entry_rcu(ref, &async_tx_master_list, node)
-                        if (ref->chan == chan) {
-                                found = 1;
-                                break;
-                        }
-                rcu_read_unlock();
-
-                pr_debug("async_tx: dma resource available [%s]\n",
-                        found ? "old" : "new");
-
-                if (!found)
-                        ack = DMA_ACK;
-                else
-                        break;
-
-                /* add the channel to the generic management list */
-                master_ref = kmalloc(sizeof(*master_ref), GFP_KERNEL);
-                if (master_ref) {
-                        /* keep a reference until async_tx is unloaded */
-                        dma_chan_get(chan);
-                        init_dma_chan_ref(master_ref, chan);
-                        spin_lock_irqsave(&async_tx_lock, flags);
-                        list_add_tail_rcu(&master_ref->node,
-                                &async_tx_master_list);
-                        spin_unlock_irqrestore(&async_tx_lock,
-                                flags);
-                } else {
-                        printk(KERN_WARNING "async_tx: unable to create"
-                                " new master entry in response to"
-                                " a DMA_RESOURCE_ADDED event"
-                                " (-ENOMEM)\n");
-                        return 0;
-                }
-
-                async_tx_rebalance();
-                break;
-        case DMA_RESOURCE_REMOVED:
-                found = 0;
-                spin_lock_irqsave(&async_tx_lock, flags);
-                list_for_each_entry(ref, &async_tx_master_list, node)
-                        if (ref->chan == chan) {
-                                /* permit backing devices to go away */
-                                dma_chan_put(ref->chan);
-                                list_del_rcu(&ref->node);
-                                call_rcu(&ref->rcu, free_dma_chan_ref);
-                                found = 1;
-                                break;
-                        }
-                spin_unlock_irqrestore(&async_tx_lock, flags);
-
-                pr_debug("async_tx: dma resource removed [%s]\n",
-                        found ? "ours" : "not ours");
-
-                if (found)
-                        ack = DMA_ACK;
-                else
-                        break;
-
-                async_tx_rebalance();
-                break;
-        case DMA_RESOURCE_SUSPEND:
-        case DMA_RESOURCE_RESUME:
-                printk(KERN_WARNING "async_tx: does not support dma channel"
-                        " suspend/resume\n");
-                break;
-        default:
-                BUG();
-        }
-
-        return ack;
-}
-
-static int __init
-async_tx_init(void)
+static int __init async_tx_init(void)
 {
-        enum dma_transaction_type cap;
-
-        spin_lock_init(&async_tx_lock);
-        bitmap_fill(dma_cap_mask_all.bits, DMA_TX_TYPE_END);
-
-        /* an interrupt will never be an explicit operation type.
-         * clearing this bit prevents allocation to a slot in 'channel_table'
-         */
-        clear_bit(DMA_INTERRUPT, dma_cap_mask_all.bits);
-
-        for_each_dma_cap_mask(cap, dma_cap_mask_all) {
-                channel_table[cap] = alloc_percpu(struct chan_ref_percpu);
-                if (!channel_table[cap])
-                        goto err;
-        }
-
-        channel_table_initialized = 1;
-        dma_async_client_register(&async_tx_dma);
-        dma_async_client_chan_request(&async_tx_dma);
+        dmaengine_get();
 
         printk(KERN_INFO "async_tx: api initialized (async)\n");
 
         return 0;
-err:
-        printk(KERN_ERR "async_tx: initialization failure\n");
-
-        while (--cap >= 0)
-                free_percpu(channel_table[cap]);
-
-        return 1;
 }
 
 static void __exit async_tx_exit(void)
 {
-        enum dma_transaction_type cap;
-
-        channel_table_initialized = 0;
-
-        for_each_dma_cap_mask(cap, dma_cap_mask_all)
-                if (channel_table[cap])
-                        free_percpu(channel_table[cap]);
-
-        dma_async_client_unregister(&async_tx_dma);
+        dmaengine_put();
 }
 
 /**
@@ -387,16 +54,9 @@ __async_tx_find_channel(struct dma_async_tx_descriptor *depend_tx,
 {
         /* see if we can keep the chain on one channel */
         if (depend_tx &&
-                dma_has_cap(tx_type, depend_tx->chan->device->cap_mask))
+            dma_has_cap(tx_type, depend_tx->chan->device->cap_mask))
                 return depend_tx->chan;
-        else if (likely(channel_table_initialized)) {
-                struct dma_chan_ref *ref;
-                int cpu = get_cpu();
-                ref = per_cpu_ptr(channel_table[tx_type], cpu)->ref;
-                put_cpu();
-                return ref ? ref->chan : NULL;
-        } else
-                return NULL;
+        return dma_find_channel(tx_type);
 }
 EXPORT_SYMBOL_GPL(__async_tx_find_channel);
 #else
diff --git a/drivers/Kconfig b/drivers/Kconfig
index 2f557f570ade..00cf9553f740 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -107,4 +107,6 @@ source "drivers/uio/Kconfig"
 source "drivers/xen/Kconfig"
 
 source "drivers/staging/Kconfig"
+
+source "drivers/platform/Kconfig"
 endmenu
diff --git a/drivers/Makefile b/drivers/Makefile
index 6326f4dbbdab..c1bf41737936 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -105,3 +105,4 @@ obj-$(CONFIG_OF)		+= of/
 obj-$(CONFIG_SSB)               += ssb/
 obj-$(CONFIG_VIRTIO)            += virtio/
 obj-$(CONFIG_STAGING)           += staging/
+obj-y                           += platform/
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index b0243fd55ac0..d7f9839ba264 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -196,90 +196,6 @@ config ACPI_NUMA
         depends on (X86 || IA64)
         default y if IA64_GENERIC || IA64_SGI_SN2
 
-config ACPI_WMI
-        tristate "WMI (EXPERIMENTAL)"
-        depends on X86
-        depends on EXPERIMENTAL
-        help
-          This driver adds support for the ACPI-WMI (Windows Management
-          Instrumentation) mapper device (PNP0C14) found on some systems.
-
-          ACPI-WMI is a proprietary extension to ACPI to expose parts of the
-          ACPI firmware to userspace - this is done through various vendor
-          defined methods and data blocks in a PNP0C14 device, which are then
-          made available for userspace to call.
-
-          The implementation of this in Linux currently only exposes this to
-          other kernel space drivers.
-
-          This driver is a required dependency to build the firmware specific
-          drivers needed on many machines, including Acer and HP laptops.
-
-          It is safe to enable this driver even if your DSDT doesn't define
-          any ACPI-WMI devices.
-
-config ACPI_ASUS
-        tristate "ASUS/Medion Laptop Extras"
-        depends on X86
-        select BACKLIGHT_CLASS_DEVICE
-        ---help---
-          This driver provides support for extra features of ACPI-compatible
-          ASUS laptops. As some of Medion laptops are made by ASUS, it may also
-          support some Medion laptops (such as 9675 for example).  It makes all
-          the extra buttons generate standard ACPI events that go through
-          /proc/acpi/events, and (on some models) adds support for changing the
-          display brightness and output, switching the LCD backlight on and off,
-          and most importantly, allows you to blink those fancy LEDs intended
-          for reporting mail and wireless status.
-
-          Note: display switching code is currently considered EXPERIMENTAL,
-          toying with these values may even lock your machine.
-
-          All settings are changed via /proc/acpi/asus directory entries. Owner
-          and group for these entries can be set with asus_uid and asus_gid
-          parameters.
-
-          More information and a userspace daemon for handling the extra buttons
-          at <http://sourceforge.net/projects/acpi4asus/>.
-
-          If you have an ACPI-compatible ASUS laptop, say Y or M here. This
-          driver is still under development, so if your laptop is unsupported or
-          something works not quite as expected, please use the mailing list
-          available on the above page (acpi4asus-user@lists.sourceforge.net).
-
-          NOTE: This driver is deprecated and will probably be removed soon,
-          use asus-laptop instead.
-
-config ACPI_TOSHIBA
-        tristate "Toshiba Laptop Extras"
-        depends on X86 && INPUT
-        select INPUT_POLLDEV
-        select NET
-        select RFKILL
-        select BACKLIGHT_CLASS_DEVICE
-        ---help---
-          This driver adds support for access to certain system settings
-          on "legacy free" Toshiba laptops.  These laptops can be recognized by
-          their lack of a BIOS setup menu and APM support.
-
-          On these machines, all system configuration is handled through the
-          ACPI.  This driver is required for access to controls not covered
-          by the general ACPI drivers, such as LCD brightness, video output,
-          etc.
-
-          This driver differs from the non-ACPI Toshiba laptop driver (located
-          under "Processor type and features") in several aspects.
-          Configuration is accessed by reading and writing text files in the
-          /proc tree instead of by program interface to /dev.  Furthermore, no
-          power management functions are exposed, as those are handled by the
-          general ACPI drivers.
-
-          More information about this driver is available at
-          <http://memebeam.org/toys/ToshibaAcpiDriver>.
-
-          If you have a legacy free Toshiba laptop (such as the Libretto L1
-          series), say Y.
-
 config ACPI_CUSTOM_DSDT_FILE
         string "Custom DSDT Table file to include"
         default ""
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 3c0c93300f12..d80f4cc2e0da 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -2,15 +2,8 @@
 # Makefile for the Linux ACPI interpreter
 #
 
-export ACPI_CFLAGS
-
-ACPI_CFLAGS     := -Os
-
-ifdef CONFIG_ACPI_DEBUG
-  ACPI_CFLAGS   += -DACPI_DEBUG_OUTPUT
-endif
-
-EXTRA_CFLAGS    += $(ACPI_CFLAGS)
+ccflags-y                       := -Os
+ccflags-$(CONFIG_ACPI_DEBUG)    += -DACPI_DEBUG_OUTPUT
 
 #
 # ACPI Boot-Time Table Parsing
@@ -22,9 +15,13 @@ obj-$(CONFIG_X86)		+= blacklist.o
 # ACPI Core Subsystem (Interpreter)
 #
 obj-y                           += osl.o utils.o reboot.o\
-                                   dispatcher/ events/ executer/ hardware/ \
-                                   namespace/ parser/ resources/ tables/ \
-                                   utilities/
+                                        acpica/
+
+# sleep related files
+obj-y                           += wakeup.o
+obj-y                           += main.o
+obj-$(CONFIG_ACPI_SLEEP)        += proc.o
+
 
 #
 # ACPI Bus and Device Drivers
@@ -35,7 +32,6 @@ ifdef CONFIG_CPU_FREQ
 processor-objs  += processor_perflib.o
 endif
 
-obj-y                           += sleep/
 obj-y                           += bus.o glue.o
 obj-y                           += scan.o
 # Keep EC driver first. Initialization of others depend on it.
@@ -59,9 +55,6 @@ obj-y				+= power.o
 obj-$(CONFIG_ACPI_SYSTEM)       += system.o event.o
 obj-$(CONFIG_ACPI_DEBUG)        += debug.o
 obj-$(CONFIG_ACPI_NUMA)         += numa.o
-obj-$(CONFIG_ACPI_WMI)          += wmi.o
-obj-$(CONFIG_ACPI_ASUS)         += asus_acpi.o
-obj-$(CONFIG_ACPI_TOSHIBA)      += toshiba_acpi.o
 obj-$(CONFIG_ACPI_HOTPLUG_MEMORY)       += acpi_memhotplug.o
 obj-$(CONFIG_ACPI_PROCFS_POWER) += cm_sbs.o
 obj-$(CONFIG_ACPI_SBS)          += sbshc.o
diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile
new file mode 100644
index 000000000000..3f23298ee3fd
--- /dev/null
+++ b/drivers/acpi/acpica/Makefile
@@ -0,0 +1,44 @@
+#
+# Makefile for ACPICA Core interpreter
+#
+
+ccflags-y                       := -Os
+ccflags-$(CONFIG_ACPI_DEBUG)    += -DACPI_DEBUG_OUTPUT
+
+obj-y := dsfield.o   dsmthdat.o  dsopcode.o  dswexec.o  dswscope.o \
+         dsmethod.o  dsobject.o  dsutils.o   dswload.o  dswstate.o \
+         dsinit.o
+
+obj-y += evevent.o  evregion.o  evsci.o    evxfevnt.o \
+         evmisc.o   evrgnini.o  evxface.o  evxfregn.o \
+         evgpe.o    evgpeblk.o
+
+obj-y += exconfig.o  exfield.o  exnames.o   exoparg6.o  exresolv.o  exstorob.o\
+         exconvrt.o  exfldio.o  exoparg1.o  exprep.o    exresop.o   exsystem.o\
+         excreate.o  exmisc.o   exoparg2.o  exregion.o  exstore.o   exutils.o \
+         exdump.o    exmutex.o  exoparg3.o  exresnte.o  exstoren.o
+
+obj-y += hwacpi.o  hwgpe.o  hwregs.o  hwsleep.o hwxface.o
+
+obj-$(ACPI_FUTURE_USAGE) += hwtimer.o
+
+obj-y += nsaccess.o  nsload.o    nssearch.o  nsxfeval.o \
+         nsalloc.o   nseval.o    nsnames.o   nsutils.o   nsxfname.o \
+         nsdump.o    nsinit.o    nsobject.o  nswalk.o    nsxfobj.o  \
+         nsparse.o   nspredef.o
+
+obj-$(ACPI_FUTURE_USAGE) += nsdumpdv.o
+
+obj-y += psargs.o    psparse.o  psloop.o pstree.o   pswalk.o  \
+         psopcode.o  psscope.o  psutils.o  psxface.o
+
+obj-y += rsaddr.o rscreate.o rsinfo.o rsio.o rslist.o rsmisc.o rsxface.o \
+         rscalc.o  rsirq.o  rsmemory.o  rsutils.o
+
+obj-$(ACPI_FUTURE_USAGE) += rsdump.o
+
+obj-y += tbxface.o tbinstal.o tbutils.o tbfind.o tbfadt.o tbxfroot.o
+
+obj-y += utalloc.o utdebug.o uteval.o utinit.o utmisc.o utxface.o \
+                utcopy.o utdelete.o utglobal.o utmath.o utobject.o \
+                utstate.o utmutex.o utobject.o utresrc.o
diff --git a/drivers/acpi/acpica/accommon.h b/drivers/acpi/acpica/accommon.h
new file mode 100644
index 000000000000..3b20786cbb0d
--- /dev/null
+++ b/drivers/acpi/acpica/accommon.h
@@ -0,0 +1,63 @@
+/******************************************************************************
+ *
+ * Name: accommon.h - Common include files for generation of ACPICA source
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2008, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#ifndef __ACCOMMON_H__
+#define __ACCOMMON_H__
+
+/*
+ * Common set of includes for all ACPICA source files.
+ * We put them here because we don't want to duplicate them
+ * in the the source code again and again.
+ *
+ * Note: The order of these include files is important.
+ */
+#include "acconfig.h"           /* Global configuration constants */
+#include "acmacros.h"           /* C macros */
+#include "aclocal.h"            /* Internal data types */
+#include "acobject.h"           /* ACPI internal object */
+#include "acstruct.h"           /* Common structures */
+#include "acglobal.h"           /* All global variables */
+#include "achware.h"            /* Hardware defines and interfaces */
+#include "acutils.h"            /* Utility interfaces */
+
+#endif                          /* __ACCOMMON_H__ */
diff --git a/include/acpi/acconfig.h b/drivers/acpi/acpica/acconfig.h
index 29feee27f0ea..e6777fb883d2 100644
--- a/include/acpi/acconfig.h
+++ b/drivers/acpi/acpica/acconfig.h
@@ -61,10 +61,6 @@
  *
  */
 
-/* Current ACPICA subsystem version in YYYYMMDD format */
-
-#define ACPI_CA_VERSION                 0x20080926
-
 /*
  * OS name, used for the _OS object.  The _OS object is essentially obsolete,
  * but there is a large base of ASL/AML code in existing machines that check
@@ -119,6 +115,10 @@
 
 #define ACPI_ROOT_TABLE_SIZE_INCREMENT  4
 
+/* Maximum number of While() loop iterations before forced abort */
+
+#define ACPI_MAX_LOOP_ITERATIONS        0xFFFF
+
 /******************************************************************************
  *
  * ACPI Specification constants (Do not change unless the specification changes)
diff --git a/include/acpi/acdebug.h b/drivers/acpi/acpica/acdebug.h
index 62c59df3b86c..62c59df3b86c 100644
--- a/include/acpi/acdebug.h
+++ b/drivers/acpi/acpica/acdebug.h
diff --git a/include/acpi/acdispat.h b/drivers/acpi/acpica/acdispat.h
index 6291904be01e..6291904be01e 100644
--- a/include/acpi/acdispat.h
+++ b/drivers/acpi/acpica/acdispat.h
diff --git a/include/acpi/acevents.h b/drivers/acpi/acpica/acevents.h
index d5d099bf349c..07e20135f01b 100644
--- a/include/acpi/acevents.h
+++ b/drivers/acpi/acpica/acevents.h
@@ -93,11 +93,13 @@ struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
  */
 u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info);
 
-acpi_status acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback);
+acpi_status
+acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context);
 
 acpi_status
 acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
-                            struct acpi_gpe_block_info *gpe_block);
+                            struct acpi_gpe_block_info *gpe_block,
+                            void *context);
 
 acpi_status
 acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device,
diff --git a/include/acpi/acglobal.h b/drivers/acpi/acpica/acglobal.h
index 15dda46b70d1..ddb40f5c68fc 100644
--- a/include/acpi/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -102,6 +102,12 @@ ACPI_EXTERN u8 ACPI_INIT_GLOBAL(acpi_gbl_create_osi_method, TRUE);
  */
 ACPI_EXTERN u8 ACPI_INIT_GLOBAL(acpi_gbl_leave_wake_gpes_disabled, TRUE);
 
+/*
+ * Optionally use default values for the ACPI register widths. Set this to
+ * TRUE to use the defaults, if an FADT contains incorrect widths/lengths.
+ */
+ACPI_EXTERN u8 ACPI_INIT_GLOBAL(acpi_gbl_use_default_register_widths, TRUE);
+
 /*****************************************************************************
  *
  * Debug support
@@ -140,7 +146,7 @@ ACPI_EXTERN u32 acpi_gbl_trace_flags;
  */
 ACPI_EXTERN struct acpi_internal_rsdt acpi_gbl_root_table_list;
 ACPI_EXTERN struct acpi_table_fadt acpi_gbl_FADT;
-extern u8 acpi_gbl_permanent_mmap;
+ACPI_EXTERN struct acpi_table_facs *acpi_gbl_FACS;
 
 /* These addresses are calculated from FADT address values */
 
@@ -326,6 +332,7 @@ ACPI_EXTERN struct acpi_fixed_event_handler
 ACPI_EXTERN struct acpi_gpe_xrupt_info *acpi_gbl_gpe_xrupt_list_head;
 ACPI_EXTERN struct acpi_gpe_block_info
 *acpi_gbl_gpe_fadt_blocks[ACPI_MAX_GPE_BLOCKS];
+ACPI_EXTERN u32 acpi_current_gpe_count;
 
 /*****************************************************************************
  *
diff --git a/include/acpi/achware.h b/drivers/acpi/acpica/achware.h
index 97a72b193276..58c69dc49ab4 100644
--- a/include/acpi/achware.h
+++ b/drivers/acpi/acpica/achware.h
@@ -44,11 +44,7 @@
 #ifndef __ACHWARE_H__
 #define __ACHWARE_H__
 
-/* PM Timer ticks per second (HZ) */
-
-#define PM_TIMER_FREQUENCY  3579545
-
-/* Values for the _SST reserved method */
+/* Values for the _SST predefined method */
 
 #define ACPI_SST_INDICATOR_OFF  0
 #define ACPI_SST_WORKING        1
@@ -56,8 +52,6 @@
 #define ACPI_SST_SLEEPING       3
 #define ACPI_SST_SLEEP_CONTEXT  4
 
-/* Prototypes */
-
 /*
  * hwacpi - high level functions
  */
@@ -75,13 +69,6 @@ acpi_hw_register_read(u32 register_id, u32 * return_value);
 
 acpi_status acpi_hw_register_write(u32 register_id, u32 value);
 
-acpi_status
-acpi_hw_low_level_read(u32 width,
-                       u32 * value, struct acpi_generic_address *reg);
-
-acpi_status
-acpi_hw_low_level_write(u32 width, u32 value, struct acpi_generic_address *reg);
-
 acpi_status acpi_hw_clear_acpi_status(void);
 
 /*
@@ -94,13 +81,13 @@ acpi_hw_write_gpe_enable_reg(struct acpi_gpe_event_info *gpe_event_info);
 
 acpi_status
 acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
-                          struct acpi_gpe_block_info *gpe_block);
+                          struct acpi_gpe_block_info *gpe_block, void *context);
 
 acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info *gpe_event_info);
 
 acpi_status
 acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
-                        struct acpi_gpe_block_info *gpe_block);
+                        struct acpi_gpe_block_info *gpe_block, void *context);
 
 acpi_status
 acpi_hw_get_gpe_status(struct acpi_gpe_event_info *gpe_event_info,
@@ -114,7 +101,8 @@ acpi_status acpi_hw_enable_all_wakeup_gpes(void);
 
 acpi_status
 acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
-                                 struct acpi_gpe_block_info *gpe_block);
+                                 struct acpi_gpe_block_info *gpe_block,
+                                 void *context);
 
 #ifdef  ACPI_FUTURE_USAGE
 /*
diff --git a/include/acpi/acinterp.h b/drivers/acpi/acpica/acinterp.h
index e8db7a3143a5..e8db7a3143a5 100644
--- a/include/acpi/acinterp.h
+++ b/drivers/acpi/acpica/acinterp.h
diff --git a/include/acpi/aclocal.h b/drivers/acpi/acpica/aclocal.h
index ecab527cf78e..492d02761bb7 100644
--- a/include/acpi/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -46,8 +46,6 @@
 
 /* acpisrc:struct_defs -- for acpisrc conversion */
 
-#define ACPI_WAIT_FOREVER               0xFFFF  /* u16, as per ACPI spec */
-#define ACPI_DO_NOT_WAIT                0
 #define ACPI_SERIALIZED                 0xFF
 
 typedef u32 acpi_mutex_handle;
@@ -120,11 +118,6 @@ static char *acpi_gbl_mutex_names[ACPI_NUM_MUTEX] = {
 #define ACPI_MAX_LOCK                   1
 #define ACPI_NUM_LOCK                   ACPI_MAX_LOCK+1
 
-/* Owner IDs are used to track namespace nodes for selective deletion */
-
-typedef u8 acpi_owner_id;
-#define ACPI_OWNER_ID_MAX               0xFF
-
 /* This Thread ID means that the mutex is not in use (unlocked) */
 
 #define ACPI_MUTEX_NOT_ACQUIRED         (acpi_thread_id) 0
@@ -165,11 +158,6 @@ typedef enum {
         ACPI_IMODE_EXECUTE = 0x03
 } acpi_interpreter_mode;
 
-union acpi_name_union {
-        u32 integer;
-        char ascii[4];
-};
-
 /*
  * The Namespace Node describes a named object that appears in the AML.
  * descriptor_type is used to differentiate between internal descriptors.
@@ -216,26 +204,6 @@ struct acpi_namespace_node {
 #define ANOBJ_IS_BIT_OFFSET             0x40    /* i_aSL only: Reference is a bit offset */
 #define ANOBJ_IS_REFERENCED             0x80    /* i_aSL only: Object was referenced */
 
-/*
- * ACPI Table Descriptor.  One per ACPI table
- */
-struct acpi_table_desc {
-        acpi_physical_address address;
-        struct acpi_table_header *pointer;
-        u32 length;             /* Length fixed at 32 bits */
-        union acpi_name_union signature;
-        acpi_owner_id owner_id;
-        u8 flags;
-};
-
-/* Flags for above */
-
-#define ACPI_TABLE_ORIGIN_UNKNOWN       (0)
-#define ACPI_TABLE_ORIGIN_MAPPED        (1)
-#define ACPI_TABLE_ORIGIN_ALLOCATED     (2)
-#define ACPI_TABLE_ORIGIN_MASK          (3)
-#define ACPI_TABLE_IS_LOADED            (4)
-
 /* One internal RSDT for table management */
 
 struct acpi_internal_rsdt {
@@ -266,15 +234,6 @@ struct acpi_ns_search_data {
         struct acpi_namespace_node *node;
 };
 
-/*
- * Predefined Namespace items
- */
-struct acpi_predefined_names {
-        char *name;
-        u8 type;
-        char *val;
-};
-
 /* Object types used during package copies */
 
 #define ACPI_COPY_TYPE_SIMPLE           0
@@ -487,10 +446,15 @@ struct acpi_gpe_walk_info {
         struct acpi_gpe_block_info *gpe_block;
 };
 
-typedef acpi_status(*acpi_gpe_callback) (struct acpi_gpe_xrupt_info *
-                                         gpe_xrupt_info,
-                                         struct acpi_gpe_block_info *
-                                         gpe_block);
+struct acpi_gpe_device_info {
+        u32 index;
+        u32 next_block_base_index;
+        acpi_status status;
+        struct acpi_namespace_node *gpe_device;
+};
+
+typedef acpi_status(*acpi_gpe_callback) (struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+                struct acpi_gpe_block_info *gpe_block, void *context);
 
 /* Information about each particular fixed event */
 
@@ -566,6 +530,7 @@ struct acpi_control_state {
         union acpi_parse_object *predicate_op;
         u8 *aml_predicate_start;        /* Start of if/while predicate */
         u8 *package_end;        /* End of if/while block */
+        u32 loop_count;         /* While() loop counter */
 };
 
 /*
@@ -671,6 +636,12 @@ union acpi_parse_value {
         union acpi_parse_object *arg;   /* arguments and contained ops */
 };
 
+#ifdef ACPI_DISASSEMBLER
+#define ACPI_DISASM_ONLY_MEMBERS(a)     a;
+#else
+#define ACPI_DISASM_ONLY_MEMBERS(a)
+#endif
+
 #define ACPI_PARSE_COMMON \
         union acpi_parse_object         *parent;        /* Parent op */\
         u8                              descriptor_type; /* To differentiate various internal objs */\
@@ -790,9 +761,6 @@ struct acpi_parse_state {
  *
  ****************************************************************************/
 
-#define PCI_ROOT_HID_STRING             "PNP0A03"
-#define PCI_EXPRESS_ROOT_HID_STRING     "PNP0A08"
-
 struct acpi_bit_register_info {
         u8 parent_register;
         u8 bit_position;
@@ -1019,26 +987,4 @@ struct acpi_debug_mem_block {
 #define ACPI_MEM_LIST_MAX               1
 #define ACPI_NUM_MEM_LISTS              2
 
-struct acpi_memory_list {
-        char *list_name;
-        void *list_head;
-        u16 object_size;
-        u16 max_depth;
-        u16 current_depth;
-        u16 link_offset;
-
-#ifdef ACPI_DBG_TRACK_ALLOCATIONS
-
-        /* Statistics for debug memory tracking only */
-
-        u32 total_allocated;
-        u32 total_freed;
-        u32 max_occupied;
-        u32 total_size;
-        u32 current_total_size;
-        u32 requests;
-        u32 hits;
-#endif
-};
-
 #endif                          /* __ACLOCAL_H__ */
diff --git a/include/acpi/acmacros.h b/drivers/acpi/acpica/acmacros.h
index 1954c9d1d012..9c127e8e2d6d 100644
--- a/include/acpi/acmacros.h
+++ b/drivers/acpi/acpica/acmacros.h
@@ -45,23 +45,6 @@
 #define __ACMACROS_H__
 
 /*
- * Data manipulation macros
- */
-#define ACPI_LOWORD(l)                  ((u16)(u32)(l))
-#define ACPI_HIWORD(l)                  ((u16)((((u32)(l)) >> 16) & 0xFFFF))
-#define ACPI_LOBYTE(l)                  ((u8)(u16)(l))
-#define ACPI_HIBYTE(l)                  ((u8)((((u16)(l)) >> 8) & 0xFF))
-
-#define ACPI_SET_BIT(target,bit)        ((target) |= (bit))
-#define ACPI_CLEAR_BIT(target,bit)      ((target) &= ~(bit))
-#define ACPI_MIN(a,b)                   (((a)<(b))?(a):(b))
-#define ACPI_MAX(a,b)                   (((a)>(b))?(a):(b))
-
-/* Size calculation */
-
-#define ACPI_ARRAY_LENGTH(x)            (sizeof(x) / sizeof((x)[0]))
-
-/*
  * Extract data using a pointer. Any more than a byte and we
  * get into potential aligment issues -- see the STORE macros below.
  * Use with care.
@@ -76,39 +59,6 @@
 #define ACPI_SET64(ptr)                 *ACPI_CAST_PTR (u64, ptr)
 
 /*
- * Pointer manipulation
- */
-#define ACPI_CAST_PTR(t, p)             ((t *) (acpi_uintptr_t) (p))
-#define ACPI_CAST_INDIRECT_PTR(t, p)    ((t **) (acpi_uintptr_t) (p))
-#define ACPI_ADD_PTR(t, a, b)           ACPI_CAST_PTR (t, (ACPI_CAST_PTR (u8, (a)) + (acpi_size)(b)))
-#define ACPI_PTR_DIFF(a, b)             (acpi_size) (ACPI_CAST_PTR (u8, (a)) - ACPI_CAST_PTR (u8, (b)))
-
-/* Pointer/Integer type conversions */
-
-#define ACPI_TO_POINTER(i)              ACPI_ADD_PTR (void, (void *) NULL, (acpi_size) i)
-#define ACPI_TO_INTEGER(p)              ACPI_PTR_DIFF (p, (void *) NULL)
-#define ACPI_OFFSET(d, f)               (acpi_size) ACPI_PTR_DIFF (&(((d *)0)->f), (void *) NULL)
-#define ACPI_PHYSADDR_TO_PTR(i)         ACPI_TO_POINTER(i)
-#define ACPI_PTR_TO_PHYSADDR(i)         ACPI_TO_INTEGER(i)
-
-#ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
-#define ACPI_COMPARE_NAME(a, b)         (*ACPI_CAST_PTR (u32, (a)) == *ACPI_CAST_PTR (u32, (b)))
-#else
-#define ACPI_COMPARE_NAME(a, b)         (!ACPI_STRNCMP (ACPI_CAST_PTR (char, (a)), ACPI_CAST_PTR (char, (b)), ACPI_NAME_SIZE))
-#endif
-
-/*
- * Full 64-bit integer must be available on both 32-bit and 64-bit platforms
- */
-struct acpi_integer_overlay {
-        u32 lo_dword;
-        u32 hi_dword;
-};
-
-#define ACPI_LODWORD(integer)           (ACPI_CAST_PTR (struct acpi_integer_overlay, &integer)->lo_dword)
-#define ACPI_HIDWORD(integer)           (ACPI_CAST_PTR (struct acpi_integer_overlay, &integer)->hi_dword)
-
-/*
  * printf() format helpers
  */
 
@@ -209,7 +159,7 @@ struct acpi_integer_overlay {
 /*
  * The hardware does not support unaligned transfers. We must move the
  * data one byte at a time. These macros work whether the source or
- * the destination (or both) is/are unaligned.  (Little-endian move)
+ * the destination (or both) is/are unaligned. (Little-endian move)
  */
 
 /* 16-bit source, 16/32/64 destination */
@@ -357,12 +307,6 @@ struct acpi_integer_overlay {
         {(u32)(Pargs), (u32)(Iargs), (u32)(flags), obj_type, class, type}
 #endif
 
-#ifdef ACPI_DISASSEMBLER
-#define ACPI_DISASM_ONLY_MEMBERS(a)     a;
-#else
-#define ACPI_DISASM_ONLY_MEMBERS(a)
-#endif
-
 #define ARG_TYPE_WIDTH                  5
 #define ARG_1(x)                        ((u32)(x))
 #define ARG_2(x)                        ((u32)(x) << (1 * ARG_TYPE_WIDTH))
@@ -388,32 +332,16 @@ struct acpi_integer_overlay {
 #define GET_CURRENT_ARG_TYPE(list)      (list & ((u32) 0x1F))
 #define INCREMENT_ARG_LIST(list)        (list >>= ((u32) ARG_TYPE_WIDTH))
 
-#if defined (ACPI_DEBUG_OUTPUT) || !defined (ACPI_NO_ERROR_MESSAGES)
-/*
- * Module name is include in both debug and non-debug versions primarily for
- * error messages. The __FILE__ macro is not very useful for this, because it
- * often includes the entire pathname to the module
- */
-#define ACPI_MODULE_NAME(name)          static const char ACPI_UNUSED_VAR _acpi_module_name[] = name;
-#else
-#define ACPI_MODULE_NAME(name)
-#endif
-
 /*
  * Ascii error messages can be configured out
  */
 #ifndef ACPI_NO_ERROR_MESSAGES
-#define AE_INFO                         _acpi_module_name, __LINE__
 
 /*
  * Error reporting. Callers module and line number are inserted by AE_INFO,
  * the plist contains a set of parens to allow variable-length lists.
  * These macros are used for both the debug and non-debug versions of the code.
  */
-#define ACPI_INFO(plist)                acpi_ut_info plist
-#define ACPI_WARNING(plist)             acpi_ut_warning plist
-#define ACPI_EXCEPTION(plist)           acpi_ut_exception plist
-#define ACPI_ERROR(plist)               acpi_ut_error plist
 #define ACPI_ERROR_NAMESPACE(s, e)      acpi_ns_report_error (AE_INFO, s, e);
 #define ACPI_ERROR_METHOD(s, n, p, e)   acpi_ns_report_method_error (AE_INFO, s, n, p, e);
 
@@ -421,13 +349,9 @@ struct acpi_integer_overlay {
 
 /* No error messages */
 
-#define ACPI_INFO(plist)
-#define ACPI_WARNING(plist)
-#define ACPI_EXCEPTION(plist)
-#define ACPI_ERROR(plist)
 #define ACPI_ERROR_NAMESPACE(s, e)
 #define ACPI_ERROR_METHOD(s, n, p, e)
-#endif
+#endif          /* ACPI_NO_ERROR_MESSAGES */
 
 /*
  * Debug macros that are conditionally compiled
@@ -435,36 +359,8 @@ struct acpi_integer_overlay {
 #ifdef ACPI_DEBUG_OUTPUT
 
 /*
- * Common parameters used for debug output functions:
- * line number, function name, module(file) name, component ID
- */
-#define ACPI_DEBUG_PARAMETERS           __LINE__, ACPI_GET_FUNCTION_NAME, _acpi_module_name, _COMPONENT
-
-/*
  * Function entry tracing
  */
-
-/*
- * If ACPI_GET_FUNCTION_NAME was not defined in the compiler-dependent header,
- * define it now. This is the case where there the compiler does not support
- * a __func__ macro or equivalent.
- */
-#ifndef ACPI_GET_FUNCTION_NAME
-#define ACPI_GET_FUNCTION_NAME          _acpi_function_name
-/*
- * The Name parameter should be the procedure name as a quoted string.
- * The function name is also used by the function exit macros below.
- * Note: (const char) is used to be compatible with the debug interfaces
- * and macros such as __func__.
- */
-#define ACPI_FUNCTION_NAME(name)        static const char _acpi_function_name[] = #name;
-
-#else
-/* Compiler supports __func__ (or equivalent) -- Ignore this macro */
-
-#define ACPI_FUNCTION_NAME(name)
-#endif
-
 #ifdef CONFIG_ACPI_DEBUG_FUNC_TRACE
 
 #define ACPI_FUNCTION_TRACE(a)          ACPI_FUNCTION_NAME(a) \
@@ -584,15 +480,6 @@ struct acpi_integer_overlay {
 #define ACPI_DUMP_RESOURCE_LIST(a)      acpi_rs_dump_resource_list(a)
 #define ACPI_DUMP_BUFFER(a, b)          acpi_ut_dump_buffer((u8 *) a, b, DB_BYTE_DISPLAY, _COMPONENT)
 
-/*
- * Master debug print macros
- * Print iff:
- *    1) Debug print for the current component is enabled
- *    2) Debug error level or trace level for the print statement is enabled
- */
-#define ACPI_DEBUG_PRINT(plist)         acpi_ut_debug_print plist
-#define ACPI_DEBUG_PRINT_RAW(plist)     acpi_ut_debug_print_raw plist
-
 #else
 /*
  * This is the non-debug case -- make everything go away,
@@ -603,7 +490,6 @@ struct acpi_integer_overlay {
 
 #define ACPI_DEBUG_DEFINE(a)            do { } while(0)
 #define ACPI_DEBUG_ONLY_MEMBERS(a)      do { } while(0)
-#define ACPI_FUNCTION_NAME(a)           do { } while(0)
 #define ACPI_FUNCTION_TRACE(a)          do { } while(0)
 #define ACPI_FUNCTION_TRACE_PTR(a, b)   do { } while(0)
 #define ACPI_FUNCTION_TRACE_U32(a, b)   do { } while(0)
@@ -619,8 +505,6 @@ struct acpi_integer_overlay {
 #define ACPI_DUMP_PATHNAME(a, b, c, d)  do { } while(0)
 #define ACPI_DUMP_RESOURCE_LIST(a)      do { } while(0)
 #define ACPI_DUMP_BUFFER(a, b)          do { } while(0)
-#define ACPI_DEBUG_PRINT(pl)            do { } while(0)
-#define ACPI_DEBUG_PRINT_RAW(pl)        do { } while(0)
 
 #define return_VOID                     return
 #define return_ACPI_STATUS(s)           return(s)
@@ -629,7 +513,7 @@ struct acpi_integer_overlay {
 #define return_UINT32(s)                return(s)
 #define return_PTR(s)                   return(s)
 
-#endif
+#endif                          /* ACPI_DEBUG_OUTPUT */
 
 /*
  * Some code only gets executed when the debugger is built in.
diff --git a/include/acpi/acnamesp.h b/drivers/acpi/acpica/acnamesp.h
index db4e6f677855..46cb5b46d280 100644
--- a/include/acpi/acnamesp.h
+++ b/drivers/acpi/acpica/acnamesp.h
@@ -182,7 +182,9 @@ acpi_status acpi_ns_evaluate(struct acpi_evaluate_info *info);
  */
 acpi_status
 acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
-                               union acpi_operand_object *return_object);
+                               u32 user_param_count,
+                               acpi_status return_status,
+                               union acpi_operand_object **return_object);
 
 const union acpi_predefined_info *acpi_ns_check_for_predefined_name(struct
                                                                     acpi_namespace_node
@@ -191,6 +193,7 @@ const union acpi_predefined_info *acpi_ns_check_for_predefined_name(struct
 void
 acpi_ns_check_parameter_count(char *pathname,
                               struct acpi_namespace_node *node,
+                              u32 user_param_count,
                               const union acpi_predefined_info *info);
 
 /*
diff --git a/include/acpi/acobject.h b/drivers/acpi/acpica/acobject.h
index eb6f038b03d9..eb6f038b03d9 100644
--- a/include/acpi/acobject.h
+++ b/drivers/acpi/acpica/acobject.h
diff --git a/include/acpi/acopcode.h b/drivers/acpi/acpica/acopcode.h
index dfdf63327885..dfdf63327885 100644
--- a/include/acpi/acopcode.h
+++ b/drivers/acpi/acpica/acopcode.h
diff --git a/include/acpi/acparser.h b/drivers/acpi/acpica/acparser.h
index 23ee0fbf5619..23ee0fbf5619 100644
--- a/include/acpi/acparser.h
+++ b/drivers/acpi/acpica/acparser.h
diff --git a/include/acpi/acpredef.h b/drivers/acpi/acpica/acpredef.h
index 16a9ca9a66e4..16a9ca9a66e4 100644
--- a/include/acpi/acpredef.h
+++ b/drivers/acpi/acpica/acpredef.h
diff --git a/include/acpi/acresrc.h b/drivers/acpi/acpica/acresrc.h
index eef5bd7a59fa..eef5bd7a59fa 100644
--- a/include/acpi/acresrc.h
+++ b/drivers/acpi/acpica/acresrc.h
diff --git a/include/acpi/acstruct.h b/drivers/acpi/acpica/acstruct.h
index 7980a26bad35..7980a26bad35 100644
--- a/include/acpi/acstruct.h
+++ b/drivers/acpi/acpica/acstruct.h
diff --git a/include/acpi/actables.h b/drivers/acpi/acpica/actables.h
index 0cbe1b9ab522..7ce6e33c7f78 100644
--- a/include/acpi/actables.h
+++ b/drivers/acpi/acpica/actables.h
@@ -94,6 +94,8 @@ void acpi_tb_set_table_loaded_flag(u32 table_index, u8 is_loaded);
 /*
  * tbutils - table manager utilities
  */
+acpi_status acpi_tb_initialize_facs(void);
+
 u8 acpi_tb_tables_loaded(void);
 
 void
diff --git a/include/acpi/acutils.h b/drivers/acpi/acpica/acutils.h
index d8307b2987e3..80d8813484fe 100644
--- a/include/acpi/acutils.h
+++ b/drivers/acpi/acpica/acutils.h
@@ -297,42 +297,6 @@ void acpi_ut_report_info(char *module_name, u32 line_number);
 
 void acpi_ut_report_warning(char *module_name, u32 line_number);
 
-/* Error and message reporting interfaces */
-
-void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_debug_print(u32 requested_debug_level,
-                    u32 line_number,
-                    const char *function_name,
-                    const char *module_name,
-                    u32 component_id,
-                    const char *format, ...) ACPI_PRINTF_LIKE(6);
-
-void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_debug_print_raw(u32 requested_debug_level,
-                        u32 line_number,
-                        const char *function_name,
-                        const char *module_name,
-                        u32 component_id,
-                        const char *format, ...) ACPI_PRINTF_LIKE(6);
-
-void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_error(const char *module_name,
-              u32 line_number, const char *format, ...) ACPI_PRINTF_LIKE(3);
-
-void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_exception(const char *module_name,
-                  u32 line_number,
-                  acpi_status status,
-                  const char *format, ...) ACPI_PRINTF_LIKE(4);
-
-void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_warning(const char *module_name,
-                u32 line_number, const char *format, ...) ACPI_PRINTF_LIKE(3);
-
-void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_info(const char *module_name,
-             u32 line_number, const char *format, ...) ACPI_PRINTF_LIKE(3);
-
 /*
  * utdelete - Object deletion and reference counts
  */
diff --git a/include/acpi/amlcode.h b/drivers/acpi/acpica/amlcode.h
index ff851c5df698..ff851c5df698 100644
--- a/include/acpi/amlcode.h
+++ b/drivers/acpi/acpica/amlcode.h
diff --git a/include/acpi/amlresrc.h b/drivers/acpi/acpica/amlresrc.h
index 7b070e42b7c5..7b070e42b7c5 100644
--- a/include/acpi/amlresrc.h
+++ b/drivers/acpi/acpica/amlresrc.h
diff --git a/drivers/acpi/dispatcher/dsfield.c b/drivers/acpi/acpica/dsfield.c
index f988a5e7d2b4..53e27bc5a734 100644
--- a/drivers/acpi/dispatcher/dsfield.c
+++ b/drivers/acpi/acpica/dsfield.c
@@ -42,11 +42,12 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/amlcode.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acparser.h>
+#include "accommon.h"
+#include "amlcode.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "acnamesp.h"
+#include "acparser.h"
 
 #define _COMPONENT          ACPI_DISPATCHER
 ACPI_MODULE_NAME("dsfield")
diff --git a/drivers/acpi/dispatcher/dsinit.c b/drivers/acpi/acpica/dsinit.c
index 949f7c75029e..eb144b13d8fa 100644
--- a/drivers/acpi/dispatcher/dsinit.c
+++ b/drivers/acpi/acpica/dsinit.c
@@ -42,9 +42,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acdispat.h>
-#include <acpi/acnamesp.h>
-#include <acpi/actables.h>
+#include "accommon.h"
+#include "acdispat.h"
+#include "acnamesp.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_DISPATCHER
 ACPI_MODULE_NAME("dsinit")
diff --git a/drivers/acpi/dispatcher/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index 279a5a60a0dd..14b8b8ed8023 100644
--- a/drivers/acpi/dispatcher/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -42,11 +42,14 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/amlcode.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "amlcode.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "acnamesp.h"
+#ifdef  ACPI_DISASSEMBLER
 #include <acpi/acdisasm.h>
+#endif
 
 #define _COMPONENT          ACPI_DISPATCHER
 ACPI_MODULE_NAME("dsmethod")
@@ -412,6 +415,9 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread,
 
         if (obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) {
                 status = obj_desc->method.implementation(next_walk_state);
+                if (status == AE_OK) {
+                        status = AE_CTRL_TERMINATE;
+                }
         }
 
         return_ACPI_STATUS(status);
diff --git a/drivers/acpi/dispatcher/dsmthdat.c b/drivers/acpi/acpica/dsmthdat.c
index d03f81bd1bcb..da0f5468184c 100644
--- a/drivers/acpi/dispatcher/dsmthdat.c
+++ b/drivers/acpi/acpica/dsmthdat.c
@@ -42,9 +42,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acdispat.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acinterp.h>
+#include "accommon.h"
+#include "acdispat.h"
+#include "acnamesp.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_DISPATCHER
 ACPI_MODULE_NAME("dsmthdat")
diff --git a/drivers/acpi/dispatcher/dsobject.c b/drivers/acpi/acpica/dsobject.c
index 4f08e599d07e..15c628e6aa00 100644
--- a/drivers/acpi/dispatcher/dsobject.c
+++ b/drivers/acpi/acpica/dsobject.c
@@ -42,11 +42,12 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/amlcode.h>
-#include <acpi/acdispat.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acinterp.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "amlcode.h"
+#include "acdispat.h"
+#include "acnamesp.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_DISPATCHER
 ACPI_MODULE_NAME("dsobject")
diff --git a/drivers/acpi/dispatcher/dsopcode.c b/drivers/acpi/acpica/dsopcode.c
index 69fae5905bb8..0c3b4dd60e8a 100644
--- a/drivers/acpi/dispatcher/dsopcode.c
+++ b/drivers/acpi/acpica/dsopcode.c
@@ -43,13 +43,14 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/amlcode.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acevents.h>
-#include <acpi/actables.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "amlcode.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "acnamesp.h"
+#include "acevents.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_DISPATCHER
 ACPI_MODULE_NAME("dsopcode")
@@ -1140,10 +1141,29 @@ acpi_ds_exec_begin_control_op(struct acpi_walk_state *walk_state,
                           op->common.aml_opcode, walk_state));
 
         switch (op->common.aml_opcode) {
-        case AML_IF_OP:
         case AML_WHILE_OP:
 
                 /*
+                 * If this is an additional iteration of a while loop, continue.
+                 * There is no need to allocate a new control state.
+                 */
+                if (walk_state->control_state) {
+                        if (walk_state->control_state->control.aml_predicate_start
+                                == (walk_state->parser_state.aml - 1)) {
+
+                                /* Reset the state to start-of-loop */
+
+                                walk_state->control_state->common.state =
+                                    ACPI_CONTROL_CONDITIONAL_EXECUTING;
+                                break;
+                        }
+                }
+
+                /*lint -fallthrough */
+
+        case AML_IF_OP:
+
+                /*
                  * IF/WHILE: Create a new control state to manage these
                  * constructs. We need to manage these as a stack, in order
                  * to handle nesting.
@@ -1243,13 +1263,36 @@ acpi_ds_exec_end_control_op(struct acpi_walk_state * walk_state,
 
                 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", op));
 
-                if (walk_state->control_state->common.value) {
+                control_state = walk_state->control_state;
+                if (control_state->common.value) {
 
-                        /* Predicate was true, go back and evaluate it again! */
+                        /* Predicate was true, the body of the loop was just executed */
 
+                        /*
+                         * This loop counter mechanism allows the interpreter to escape
+                         * possibly infinite loops. This can occur in poorly written AML
+                         * when the hardware does not respond within a while loop and the
+                         * loop does not implement a timeout.
+                         */
+                        control_state->control.loop_count++;
+                        if (control_state->control.loop_count >
+                                ACPI_MAX_LOOP_ITERATIONS) {
+                                status = AE_AML_INFINITE_LOOP;
+                                break;
+                        }
+
+                        /*
+                         * Go back and evaluate the predicate and maybe execute the loop
+                         * another time
+                         */
                         status = AE_CTRL_PENDING;
+                        walk_state->aml_last_while =
+                            control_state->control.aml_predicate_start;
+                        break;
                 }
 
+                /* Predicate was false, terminate this while loop */
+
                 ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
                                   "[WHILE_OP] termination! Op=%p\n", op));
 
@@ -1257,9 +1300,6 @@ acpi_ds_exec_end_control_op(struct acpi_walk_state * walk_state,
 
                 control_state =
                     acpi_ut_pop_generic_state(&walk_state->control_state);
-
-                walk_state->aml_last_while =
-                    control_state->control.aml_predicate_start;
                 acpi_ut_delete_generic_state(control_state);
                 break;
 
diff --git a/drivers/acpi/dispatcher/dsutils.c b/drivers/acpi/acpica/dsutils.c
index b398982f0d8b..dabc23a46176 100644
--- a/drivers/acpi/dispatcher/dsutils.c
+++ b/drivers/acpi/acpica/dsutils.c
@@ -42,12 +42,13 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/amlcode.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acdebug.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "amlcode.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "acnamesp.h"
+#include "acdebug.h"
 
 #define _COMPONENT          ACPI_DISPATCHER
 ACPI_MODULE_NAME("dsutils")
diff --git a/drivers/acpi/dispatcher/dswexec.c b/drivers/acpi/acpica/dswexec.c
index 396fe12078cd..350e6656bc89 100644
--- a/drivers/acpi/dispatcher/dswexec.c
+++ b/drivers/acpi/acpica/dswexec.c
@@ -43,12 +43,13 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/amlcode.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acdebug.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "amlcode.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "acnamesp.h"
+#include "acdebug.h"
 
 #define _COMPONENT          ACPI_DISPATCHER
 ACPI_MODULE_NAME("dswexec")
diff --git a/drivers/acpi/dispatcher/dswload.c b/drivers/acpi/acpica/dswload.c
index dff7a3e445a8..3023ceaa8d54 100644
--- a/drivers/acpi/dispatcher/dswload.c
+++ b/drivers/acpi/acpica/dswload.c
@@ -42,12 +42,13 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/amlcode.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acevents.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "amlcode.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "acnamesp.h"
+#include "acevents.h"
 
 #ifdef ACPI_ASL_COMPILER
 #include <acpi/acdisasm.h>
diff --git a/drivers/acpi/dispatcher/dswscope.c b/drivers/acpi/acpica/dswscope.c
index 9e6073265873..908645e72f03 100644
--- a/drivers/acpi/dispatcher/dswscope.c
+++ b/drivers/acpi/acpica/dswscope.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acdispat.h>
+#include "accommon.h"
+#include "acdispat.h"
 
 #define _COMPONENT          ACPI_DISPATCHER
 ACPI_MODULE_NAME("dswscope")
diff --git a/drivers/acpi/dispatcher/dswstate.c b/drivers/acpi/acpica/dswstate.c
index b00d4af791aa..40f92bf7dce5 100644
--- a/drivers/acpi/dispatcher/dswstate.c
+++ b/drivers/acpi/acpica/dswstate.c
@@ -42,9 +42,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/acdispat.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "acdispat.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_DISPATCHER
 ACPI_MODULE_NAME("dswstate")
diff --git a/drivers/acpi/events/evevent.c b/drivers/acpi/acpica/evevent.c
index c56c5c6ea77b..803edd9e3f6a 100644
--- a/drivers/acpi/events/evevent.c
+++ b/drivers/acpi/acpica/evevent.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acevents.h>
+#include "accommon.h"
+#include "acevents.h"
 
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evevent")
@@ -72,8 +73,8 @@ acpi_status acpi_ev_initialize_events(void)
 
         /*
          * Initialize the Fixed and General Purpose Events. This is done prior to
-         * enabling SCIs to prevent interrupts from occurring before the handlers are
-         * installed.
+         * enabling SCIs to prevent interrupts from occurring before the handlers
+         * are installed.
          */
         status = acpi_ev_fixed_event_initialize();
         if (ACPI_FAILURE(status)) {
@@ -192,8 +193,8 @@ static acpi_status acpi_ev_fixed_event_initialize(void)
         acpi_status status;
 
         /*
-         * Initialize the structure that keeps track of fixed event handlers
-         * and enable the fixed events.
+         * Initialize the structure that keeps track of fixed event handlers and
+         * enable the fixed events.
          */
         for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
                 acpi_gbl_fixed_event_handlers[i].handler = NULL;
@@ -237,7 +238,7 @@ u32 acpi_ev_fixed_event_detect(void)
 
         /*
          * Read the fixed feature status and enable registers, as all the cases
-         * depend on their values.  Ignore errors here.
+         * depend on their values. Ignore errors here.
          */
         (void)acpi_hw_register_read(ACPI_REGISTER_PM1_STATUS, &fixed_status);
         (void)acpi_hw_register_read(ACPI_REGISTER_PM1_ENABLE, &fixed_enable);
@@ -291,8 +292,8 @@ static u32 acpi_ev_fixed_event_dispatch(u32 event)
                                 status_register_id, 1);
 
         /*
-         * Make sure we've got a handler.  If not, report an error.
-         * The event is disabled to prevent further interrupts.
+         * Make sure we've got a handler. If not, report an error. The event is
+         * disabled to prevent further interrupts.
          */
         if (NULL == acpi_gbl_fixed_event_handlers[event].handler) {
                 (void)acpi_set_register(acpi_gbl_fixed_event_info[event].
diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/acpica/evgpe.c
index f45c74fe745e..f345ced36477 100644
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -42,8 +42,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acevents.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acevents.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evgpe")
@@ -125,7 +126,7 @@ acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info,
             (1 <<
              (gpe_event_info->gpe_number - gpe_register_info->base_gpe_number));
 
-        /* 1) Disable case.  Simply clear all enable bits */
+        /* 1) Disable case. Simply clear all enable bits */
 
         if (type == ACPI_GPE_DISABLE) {
                 ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake,
@@ -134,7 +135,7 @@ acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info,
                 return_ACPI_STATUS(AE_OK);
         }
 
-        /* 2) Enable case.  Set/Clear the appropriate enable bits */
+        /* 2) Enable case. Set/Clear the appropriate enable bits */
 
         switch (gpe_event_info->flags & ACPI_GPE_TYPE_MASK) {
         case ACPI_GPE_TYPE_WAKE:
@@ -295,7 +296,7 @@ acpi_status acpi_ev_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
  *
  * FUNCTION:    acpi_ev_get_gpe_event_info
  *
- * PARAMETERS:  gpe_device          - Device node.  NULL for GPE0/GPE1
+ * PARAMETERS:  gpe_device          - Device node. NULL for GPE0/GPE1
  *              gpe_number          - Raw GPE number
  *
  * RETURN:      A GPE event_info struct. NULL if not a valid GPE
@@ -372,7 +373,7 @@ struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
  *
  * RETURN:      INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED
  *
- * DESCRIPTION: Detect if any GP events have occurred.  This function is
+ * DESCRIPTION: Detect if any GP events have occurred. This function is
  *              executed at interrupt level.
  *
  ******************************************************************************/
@@ -400,8 +401,8 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
 
         /*
          * We need to obtain the GPE lock for both the data structs and registers
-         * Note: Not necessary to obtain the hardware lock, since the GPE registers
-         * are owned by the gpe_lock.
+         * Note: Not necessary to obtain the hardware lock, since the GPE
+         * registers are owned by the gpe_lock.
          */
         flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
 
@@ -410,9 +411,8 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
         gpe_block = gpe_xrupt_list->gpe_block_list_head;
         while (gpe_block) {
                 /*
-                 * Read all of the 8-bit GPE status and enable registers
-                 * in this GPE block, saving all of them.
-                 * Find all currently active GP events.
+                 * Read all of the 8-bit GPE status and enable registers in this GPE
+                 * block, saving all of them. Find all currently active GP events.
                  */
                 for (i = 0; i < gpe_block->register_count; i++) {
 
@@ -423,10 +423,8 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
                         /* Read the Status Register */
 
                         status =
-                            acpi_hw_low_level_read(ACPI_GPE_REGISTER_WIDTH,
-                                                   &status_reg,
-                                                   &gpe_register_info->
-                                                   status_address);
+                            acpi_read(&status_reg,
+                                      &gpe_register_info->status_address);
                         if (ACPI_FAILURE(status)) {
                                 goto unlock_and_exit;
                         }
@@ -434,10 +432,8 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
                         /* Read the Enable Register */
 
                         status =
-                            acpi_hw_low_level_read(ACPI_GPE_REGISTER_WIDTH,
-                                                   &enable_reg,
-                                                   &gpe_register_info->
-                                                   enable_address);
+                            acpi_read(&enable_reg,
+                                      &gpe_register_info->enable_address);
                         if (ACPI_FAILURE(status)) {
                                 goto unlock_and_exit;
                         }
@@ -527,8 +523,8 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
         (void)acpi_ev_enable_gpe(gpe_event_info, FALSE);
 
         /*
-         * Take a snapshot of the GPE info for this level - we copy the
-         * info to prevent a race condition with remove_handler/remove_block.
+         * Take a snapshot of the GPE info for this level - we copy the info to
+         * prevent a race condition with remove_handler/remove_block.
          */
         ACPI_MEMCPY(&local_gpe_event_info, gpe_event_info,
                     sizeof(struct acpi_gpe_event_info));
@@ -539,8 +535,8 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
         }
 
         /*
-         * Must check for control method type dispatch one more
-         * time to avoid race with ev_gpe_install_handler
+         * Must check for control method type dispatch one more time to avoid a
+         * race with ev_gpe_install_handler
          */
         if ((local_gpe_event_info.flags & ACPI_GPE_DISPATCH_MASK) ==
             ACPI_GPE_DISPATCH_METHOD) {
@@ -584,8 +580,8 @@ static void acpi_ev_asynch_enable_gpe(void *context)
         if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
             ACPI_GPE_LEVEL_TRIGGERED) {
                 /*
-                 * GPE is level-triggered, we clear the GPE status bit after
-                 * handling the event.
+                 * GPE is level-triggered, we clear the GPE status bit after handling
+                 * the event.
                  */
                 status = acpi_hw_clear_gpe(gpe_event_info);
                 if (ACPI_FAILURE(status)) {
@@ -624,7 +620,7 @@ acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
         acpi_os_gpe_count(gpe_number);
 
         /*
-         * If edge-triggered, clear the GPE status bit now.  Note that
+         * If edge-triggered, clear the GPE status bit now. Note that
          * level-triggered events are cleared after the GPE is serviced.
          */
         if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) ==
@@ -650,7 +646,8 @@ acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
 
                 /*
                  * Invoke the installed handler (at interrupt level)
-                 * Ignore return status for now.  TBD: leave GPE disabled on error?
+                 * Ignore return status for now.
+                 * TBD: leave GPE disabled on error?
                  */
                 (void)gpe_event_info->dispatch.handler->address(gpe_event_info->
                                                                 dispatch.
@@ -708,7 +705,7 @@ acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
                             gpe_number));
 
                 /*
-                 * Disable the GPE. The GPE will remain disabled until the ACPI
+                 * Disable the GPE. The GPE will remain disabled until the ACPICA
                  * Core Subsystem is restarted, or a handler is installed.
                  */
                 status = acpi_ev_disable_gpe(gpe_event_info);
diff --git a/drivers/acpi/events/evgpeblk.c b/drivers/acpi/acpica/evgpeblk.c
index 73c058e2f5c2..484cc0565d5b 100644
--- a/drivers/acpi/events/evgpeblk.c
+++ b/drivers/acpi/acpica/evgpeblk.c
@@ -42,8 +42,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acevents.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acevents.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evgpeblk")
@@ -124,6 +125,7 @@ u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info)
  * FUNCTION:    acpi_ev_walk_gpe_list
  *
  * PARAMETERS:  gpe_walk_callback   - Routine called for each GPE block
+ *              Context             - Value passed to callback
  *
  * RETURN:      Status
  *
@@ -131,7 +133,8 @@ u8 acpi_ev_valid_gpe_event(struct acpi_gpe_event_info *gpe_event_info)
  *
  ******************************************************************************/
 
-acpi_status acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback)
+acpi_status
+acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback, void *context)
 {
         struct acpi_gpe_block_info *gpe_block;
         struct acpi_gpe_xrupt_info *gpe_xrupt_info;
@@ -154,8 +157,13 @@ acpi_status acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback)
 
                         /* One callback per GPE block */
 
-                        status = gpe_walk_callback(gpe_xrupt_info, gpe_block);
+                        status =
+                            gpe_walk_callback(gpe_xrupt_info, gpe_block,
+                                              context);
                         if (ACPI_FAILURE(status)) {
+                                if (status == AE_CTRL_END) {    /* Callback abort */
+                                        status = AE_OK;
+                                }
                                 goto unlock_and_exit;
                         }
 
@@ -186,7 +194,8 @@ acpi_status acpi_ev_walk_gpe_list(acpi_gpe_callback gpe_walk_callback)
 
 acpi_status
 acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
-                            struct acpi_gpe_block_info *gpe_block)
+                            struct acpi_gpe_block_info *gpe_block,
+                            void *context)
 {
         struct acpi_gpe_event_info *gpe_event_info;
         u32 i;
@@ -309,17 +318,17 @@ acpi_ev_save_method_info(acpi_handle obj_handle,
              (gpe_block->block_base_number +
               (gpe_block->register_count * 8)))) {
                 /*
-                 * Not valid for this GPE block, just ignore it
-                 * However, it may be valid for a different GPE block, since GPE0 and GPE1
-                 * methods both appear under \_GPE.
+                 * Not valid for this GPE block, just ignore it. However, it may be
+                 * valid for a different GPE block, since GPE0 and GPE1 methods both
+                 * appear under \_GPE.
                  */
                 return_ACPI_STATUS(AE_OK);
         }
 
         /*
-         * Now we can add this information to the gpe_event_info block
-         * for use during dispatch of this GPE. Default type is RUNTIME, although
-         * this may change when the _PRW methods are executed later.
+         * Now we can add this information to the gpe_event_info block for use
+         * during dispatch of this GPE. Default type is RUNTIME, although this may
+         * change when the _PRW methods are executed later.
          */
         gpe_event_info =
             &gpe_block->event_info[gpe_number - gpe_block->block_base_number];
@@ -394,8 +403,8 @@ acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
         gpe_block = gpe_info->gpe_block;
 
         /*
-         * The _PRW object must return a package, we are only interested
-         * in the first element
+         * The _PRW object must return a package, we are only interested in the
+         * first element
          */
         obj_desc = pkg_desc->package.elements[0];
 
@@ -434,7 +443,7 @@ acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
         /*
          * Is this GPE within this block?
          *
-         * TRUE iff these conditions are true:
+         * TRUE if and only if these conditions are true:
          *     1) The GPE devices match.
          *     2) The GPE index(number) is within the range of the Gpe Block
          *          associated with the GPE device.
@@ -457,6 +466,7 @@ acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
                 if (ACPI_FAILURE(status)) {
                         goto cleanup;
                 }
+
                 status =
                     acpi_ev_update_gpe_enable_masks(gpe_event_info,
                                                     ACPI_GPE_DISABLE);
@@ -476,9 +486,9 @@ acpi_ev_match_prw_and_gpe(acpi_handle obj_handle,
  * RETURN:      A GPE interrupt block
  *
  * DESCRIPTION: Get or Create a GPE interrupt block. There is one interrupt
- *              block per unique interrupt level used for GPEs.
- *              Should be called only when the GPE lists are semaphore locked
- *              and not subject to change.
+ *              block per unique interrupt level used for GPEs. Should be
+ *              called only when the GPE lists are semaphore locked and not
+ *              subject to change.
  *
  ******************************************************************************/
 
@@ -608,8 +618,9 @@ acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt)
  *
  * FUNCTION:    acpi_ev_install_gpe_block
  *
- * PARAMETERS:  gpe_block       - New GPE block
- *              interrupt_number - Xrupt to be associated with this GPE block
+ * PARAMETERS:  gpe_block               - New GPE block
+ *              interrupt_number        - Xrupt to be associated with this
+ *                                        GPE block
  *
  * RETURN:      Status
  *
@@ -666,7 +677,7 @@ acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block,
  *
  * FUNCTION:    acpi_ev_delete_gpe_block
  *
- * PARAMETERS:  gpe_block       - Existing GPE block
+ * PARAMETERS:  gpe_block           - Existing GPE block
  *
  * RETURN:      Status
  *
@@ -688,7 +699,8 @@ acpi_status acpi_ev_delete_gpe_block(struct acpi_gpe_block_info *gpe_block)
 
         /* Disable all GPEs in this block */
 
-        status = acpi_hw_disable_gpe_block(gpe_block->xrupt_block, gpe_block);
+        status =
+            acpi_hw_disable_gpe_block(gpe_block->xrupt_block, gpe_block, NULL);
 
         if (!gpe_block->previous && !gpe_block->next) {
 
@@ -715,6 +727,9 @@ acpi_status acpi_ev_delete_gpe_block(struct acpi_gpe_block_info *gpe_block)
                 acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
         }
 
+        acpi_current_gpe_count -=
+            gpe_block->register_count * ACPI_GPE_REGISTER_WIDTH;
+
         /* Free the gpe_block */
 
         ACPI_FREE(gpe_block->register_info);
@@ -786,9 +801,9 @@ acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block)
 
         /*
          * Initialize the GPE Register and Event structures. A goal of these
-         * tables is to hide the fact that there are two separate GPE register sets
-         * in a given GPE hardware block, the status registers occupy the first half,
-         * and the enable registers occupy the second half.
+         * tables is to hide the fact that there are two separate GPE register
+         * sets in a given GPE hardware block, the status registers occupy the
+         * first half, and the enable registers occupy the second half.
          */
         this_register = gpe_register_info;
         this_event = gpe_event_info;
@@ -816,10 +831,8 @@ acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block)
                     ACPI_GPE_REGISTER_WIDTH;
                 this_register->enable_address.bit_width =
                     ACPI_GPE_REGISTER_WIDTH;
-                this_register->status_address.bit_offset =
-                    ACPI_GPE_REGISTER_WIDTH;
-                this_register->enable_address.bit_offset =
-                    ACPI_GPE_REGISTER_WIDTH;
+                this_register->status_address.bit_offset = 0;
+                this_register->enable_address.bit_offset = 0;
 
                 /* Init the event_info for each GPE within this register */
 
@@ -832,18 +845,14 @@ acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block)
 
                 /* Disable all GPEs within this register */
 
-                status = acpi_hw_low_level_write(ACPI_GPE_REGISTER_WIDTH, 0x00,
-                                                 &this_register->
-                                                 enable_address);
+                status = acpi_write(0x00, &this_register->enable_address);
                 if (ACPI_FAILURE(status)) {
                         goto error_exit;
                 }
 
                 /* Clear any pending GPE events within this register */
 
-                status = acpi_hw_low_level_write(ACPI_GPE_REGISTER_WIDTH, 0xFF,
-                                                 &this_register->
-                                                 status_address);
+                status = acpi_write(0xFF, &this_register->status_address);
                 if (ACPI_FAILURE(status)) {
                         goto error_exit;
                 }
@@ -956,6 +965,9 @@ acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device,
                           gpe_device->name.ascii, gpe_block->register_count,
                           interrupt_number));
 
+        /* Update global count of currently available GPEs */
+
+        acpi_current_gpe_count += register_count * ACPI_GPE_REGISTER_WIDTH;
         return_ACPI_STATUS(AE_OK);
 }
 
@@ -1055,7 +1067,7 @@ acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
 
         /* Enable all valid runtime GPEs found above */
 
-        status = acpi_hw_enable_runtime_gpe_block(NULL, gpe_block);
+        status = acpi_hw_enable_runtime_gpe_block(NULL, gpe_block, NULL);
         if (ACPI_FAILURE(status)) {
                 ACPI_ERROR((AE_INFO, "Could not enable GPEs in GpeBlock %p",
                             gpe_block));
diff --git a/drivers/acpi/events/evmisc.c b/drivers/acpi/acpica/evmisc.c
index 1d5670be729a..5f893057bcc6 100644
--- a/drivers/acpi/events/evmisc.c
+++ b/drivers/acpi/acpica/evmisc.c
@@ -42,18 +42,15 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acevents.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acinterp.h>
+#include "accommon.h"
+#include "acevents.h"
+#include "acnamesp.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evmisc")
 
-/* Pointer to FACS needed for the Global Lock */
-static struct acpi_table_facs *facs = NULL;
-
 /* Local prototypes */
-
 static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context);
 
 static u32 acpi_ev_global_lock_handler(void *context);
@@ -152,7 +149,9 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
                         break;
 
                 default:
+
                         /* All other types are not supported */
+
                         return (AE_TYPE);
                 }
         }
@@ -193,9 +192,8 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
                         acpi_ut_delete_generic_state(notify_info);
                 }
         } else {
-                /*
-                 * There is no notify handler (per-device or system) for this device.
-                 */
+                /* There is no notify handler (per-device or system) for this device */
+
                 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
                                   "No notify handler for Notify (%4.4s, %X) node %p\n",
                                   acpi_ut_get_node_name(node), notify_value,
@@ -229,9 +227,8 @@ static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context)
         ACPI_FUNCTION_ENTRY();
 
         /*
-         * We will invoke a global notify handler if installed.
-         * This is done _before_ we invoke the per-device handler attached
-         * to the device.
+         * We will invoke a global notify handler if installed. This is done
+         * _before_ we invoke the per-device handler attached to the device.
          */
         if (notify_info->notify.value <= ACPI_MAX_SYS_NOTIFY) {
 
@@ -299,7 +296,7 @@ static u32 acpi_ev_global_lock_handler(void *context)
          * If we don't get it now, it will be marked pending and we will
          * take another interrupt when it becomes free.
          */
-        ACPI_ACQUIRE_GLOBAL_LOCK(facs, acquired);
+        ACPI_ACQUIRE_GLOBAL_LOCK(acpi_gbl_FACS, acquired);
         if (acquired) {
 
                 /* Got the lock, now wake all threads waiting for it */
@@ -336,34 +333,27 @@ acpi_status acpi_ev_init_global_lock_handler(void)
 
         ACPI_FUNCTION_TRACE(ev_init_global_lock_handler);
 
-        status = acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
-                                         ACPI_CAST_INDIRECT_PTR(struct
-                                                                acpi_table_header,
-                                                                &facs));
-        if (ACPI_FAILURE(status)) {
-                return_ACPI_STATUS(status);
-        }
+        /* Attempt installation of the global lock handler */
 
-        acpi_gbl_global_lock_present = TRUE;
         status = acpi_install_fixed_event_handler(ACPI_EVENT_GLOBAL,
                                                   acpi_ev_global_lock_handler,
                                                   NULL);
 
         /*
-         * If the global lock does not exist on this platform, the attempt
-         * to enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick)
-         * Map to AE_OK, but mark global lock as not present.
-         * Any attempt to actually use the global lock will be flagged
-         * with an error.
+         * If the global lock does not exist on this platform, the attempt to
+         * enable GBL_STATUS will fail (the GBL_ENABLE bit will not stick).
+         * Map to AE_OK, but mark global lock as not present. Any attempt to
+         * actually use the global lock will be flagged with an error.
          */
         if (status == AE_NO_HARDWARE_RESPONSE) {
                 ACPI_ERROR((AE_INFO,
                             "No response from Global Lock hardware, disabling lock"));
 
                 acpi_gbl_global_lock_present = FALSE;
-                status = AE_OK;
+                return_ACPI_STATUS(AE_OK);
         }
 
+        acpi_gbl_global_lock_present = TRUE;
         return_ACPI_STATUS(status);
 }
 
@@ -462,8 +452,8 @@ acpi_status acpi_ev_acquire_global_lock(u16 timeout)
         }
 
         /*
-         * Make sure that a global lock actually exists. If not, just treat
-         * the lock as a standard mutex.
+         * Make sure that a global lock actually exists. If not, just treat the
+         * lock as a standard mutex.
          */
         if (!acpi_gbl_global_lock_present) {
                 acpi_gbl_global_lock_acquired = TRUE;
@@ -472,7 +462,7 @@ acpi_status acpi_ev_acquire_global_lock(u16 timeout)
 
         /* Attempt to acquire the actual hardware lock */
 
-        ACPI_ACQUIRE_GLOBAL_LOCK(facs, acquired);
+        ACPI_ACQUIRE_GLOBAL_LOCK(acpi_gbl_FACS, acquired);
         if (acquired) {
 
                 /* We got the lock */
@@ -536,7 +526,7 @@ acpi_status acpi_ev_release_global_lock(void)
 
                 /* Allow any thread to release the lock */
 
-                ACPI_RELEASE_GLOBAL_LOCK(facs, pending);
+                ACPI_RELEASE_GLOBAL_LOCK(acpi_gbl_FACS, pending);
 
                 /*
                  * If the pending bit was set, we must write GBL_RLS to the control
@@ -582,8 +572,8 @@ void acpi_ev_terminate(void)
 
         if (acpi_gbl_events_initialized) {
                 /*
-                 * Disable all event-related functionality.
-                 * In all cases, on error, print a message but obviously we don't abort.
+                 * Disable all event-related functionality. In all cases, on error,
+                 * print a message but obviously we don't abort.
                  */
 
                 /* Disable all fixed events */
@@ -599,7 +589,7 @@ void acpi_ev_terminate(void)
 
                 /* Disable all GPEs in all GPE blocks */
 
-                status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block);
+                status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block, NULL);
 
                 /* Remove SCI handler */
 
@@ -617,7 +607,7 @@ void acpi_ev_terminate(void)
 
         /* Deallocate all handler objects installed within GPE info structs */
 
-        status = acpi_ev_walk_gpe_list(acpi_ev_delete_gpe_handlers);
+        status = acpi_ev_walk_gpe_list(acpi_ev_delete_gpe_handlers, NULL);
 
         /* Return to original mode if necessary */
 
diff --git a/drivers/acpi/events/evregion.c b/drivers/acpi/acpica/evregion.c
index 236fbd1ca438..665c0887ab4d 100644
--- a/drivers/acpi/events/evregion.c
+++ b/drivers/acpi/acpica/evregion.c
@@ -42,22 +42,15 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acevents.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acinterp.h>
+#include "accommon.h"
+#include "acevents.h"
+#include "acnamesp.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evregion")
-#define ACPI_NUM_DEFAULT_SPACES     4
-static u8 acpi_gbl_default_address_spaces[ACPI_NUM_DEFAULT_SPACES] = {
-        ACPI_ADR_SPACE_SYSTEM_MEMORY,
-        ACPI_ADR_SPACE_SYSTEM_IO,
-        ACPI_ADR_SPACE_PCI_CONFIG,
-        ACPI_ADR_SPACE_DATA_TABLE
-};
 
 /* Local prototypes */
-
 static acpi_status
 acpi_ev_reg_run(acpi_handle obj_handle,
                 u32 level, void *context, void **return_value);
@@ -66,6 +59,17 @@ static acpi_status
 acpi_ev_install_handler(acpi_handle obj_handle,
                         u32 level, void *context, void **return_value);
 
+/* These are the address spaces that will get default handlers */
+
+#define ACPI_NUM_DEFAULT_SPACES     4
+
+static u8 acpi_gbl_default_address_spaces[ACPI_NUM_DEFAULT_SPACES] = {
+        ACPI_ADR_SPACE_SYSTEM_MEMORY,
+        ACPI_ADR_SPACE_SYSTEM_IO,
+        ACPI_ADR_SPACE_PCI_CONFIG,
+        ACPI_ADR_SPACE_DATA_TABLE
+};
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ev_install_region_handlers
@@ -91,18 +95,19 @@ acpi_status acpi_ev_install_region_handlers(void)
         }
 
         /*
-         * All address spaces (PCI Config, EC, SMBus) are scope dependent
-         * and registration must occur for a specific device.
+         * All address spaces (PCI Config, EC, SMBus) are scope dependent and
+         * registration must occur for a specific device.
          *
-         * In the case of the system memory and IO address spaces there is currently
-         * no device associated with the address space.  For these we use the root.
+         * In the case of the system memory and IO address spaces there is
+         * currently no device associated with the address space. For these we
+         * use the root.
          *
-         * We install the default PCI config space handler at the root so
-         * that this space is immediately available even though the we have
-         * not enumerated all the PCI Root Buses yet.  This is to conform
-         * to the ACPI specification which states that the PCI config
-         * space must be always available -- even though we are nowhere
-         * near ready to find the PCI root buses at this point.
+         * We install the default PCI config space handler at the root so that
+         * this space is immediately available even though the we have not
+         * enumerated all the PCI Root Buses yet. This is to conform to the ACPI
+         * specification which states that the PCI config space must be always
+         * available -- even though we are nowhere near ready to find the PCI root
+         * buses at this point.
          *
          * NOTE: We ignore AE_ALREADY_EXISTS because this means that a handler
          * has already been installed (via acpi_install_address_space_handler).
@@ -160,12 +165,11 @@ acpi_status acpi_ev_initialize_op_regions(void)
                 return_ACPI_STATUS(status);
         }
 
-        /*
-         * Run the _REG methods for op_regions in each default address space
-         */
-        for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) {
+        /* Run the _REG methods for op_regions in each default address space */
 
-                /* TBD: Make sure handler is the DEFAULT handler, otherwise
+        for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) {
+                /*
+                 * TBD: Make sure handler is the DEFAULT handler, otherwise
                  * _REG will have already been run.
                  */
                 status = acpi_ev_execute_reg_methods(acpi_gbl_root_node,
@@ -318,13 +322,13 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
         }
 
         /*
-         * It may be the case that the region has never been initialized
+         * It may be the case that the region has never been initialized.
          * Some types of regions require special init code
          */
         if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
-                /*
-                 * This region has not been initialized yet, do it
-                 */
+
+                /* This region has not been initialized yet, do it */
+
                 region_setup = handler_desc->address_space.setup;
                 if (!region_setup) {
 
@@ -339,9 +343,9 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
                 }
 
                 /*
-                 * We must exit the interpreter because the region
-                 * setup will potentially execute control methods
-                 * (e.g., _REG method for this region)
+                 * We must exit the interpreter because the region setup will
+                 * potentially execute control methods (for example, the _REG method
+                 * for this region)
                  */
                 acpi_ex_exit_interpreter();
 
@@ -364,9 +368,8 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
                         return_ACPI_STATUS(status);
                 }
 
-                /*
-                 * Region initialization may have been completed by region_setup
-                 */
+                /* Region initialization may have been completed by region_setup */
+
                 if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
                         region_obj->region.flags |= AOPOBJ_SETUP_COMPLETE;
 
@@ -521,8 +524,8 @@ acpi_ev_detach_region(union acpi_operand_object *region_obj,
                         }
 
                         /*
-                         * If the region has been activated, call the setup handler
-                         * with the deactivate notification
+                         * If the region has been activated, call the setup handler with
+                         * the deactivate notification
                          */
                         if (region_obj->region.flags & AOPOBJ_SETUP_COMPLETE) {
                                 region_setup = handler_obj->address_space.setup;
@@ -668,8 +671,8 @@ acpi_ev_install_handler(acpi_handle obj_handle,
         }
 
         /*
-         * We only care about regions.and objects
-         * that are allowed to have address space handlers
+         * We only care about regions and objects that are allowed to have
+         * address space handlers
          */
         if ((node->type != ACPI_TYPE_DEVICE) &&
             (node->type != ACPI_TYPE_REGION) && (node != acpi_gbl_root_node)) {
@@ -710,9 +713,9 @@ acpi_ev_install_handler(acpi_handle obj_handle,
                                 /*
                                  * Since the object we found it on was a device, then it
                                  * means that someone has already installed a handler for
-                                 * the branch of the namespace from this device on.  Just
+                                 * the branch of the namespace from this device on. Just
                                  * bail out telling the walk routine to not traverse this
-                                 * branch.  This preserves the scoping rule for handlers.
+                                 * branch. This preserves the scoping rule for handlers.
                                  */
                                 return (AE_CTRL_DEPTH);
                         }
@@ -723,9 +726,8 @@ acpi_ev_install_handler(acpi_handle obj_handle,
                 }
 
                 /*
-                 * As long as the device didn't have a handler for this
-                 * space we don't care about it.  We just ignore it and
-                 * proceed.
+                 * As long as the device didn't have a handler for this space we
+                 * don't care about it. We just ignore it and proceed.
                  */
                 return (AE_OK);
         }
@@ -733,16 +735,14 @@ acpi_ev_install_handler(acpi_handle obj_handle,
         /* Object is a Region */
 
         if (obj_desc->region.space_id != handler_obj->address_space.space_id) {
-                /*
-                 * This region is for a different address space
-                 * -- just ignore it
-                 */
+
+                /* This region is for a different address space, just ignore it */
+
                 return (AE_OK);
         }
 
         /*
-         * Now we have a region and it is for the handler's address
-         * space type.
+         * Now we have a region and it is for the handler's address space type.
          *
          * First disconnect region for any previous handler (if any)
          */
@@ -786,9 +786,8 @@ acpi_ev_install_space_handler(struct acpi_namespace_node * node,
         ACPI_FUNCTION_TRACE(ev_install_space_handler);
 
         /*
-         * This registration is valid for only the types below
-         * and the root.  This is where the default handlers
-         * get placed.
+         * This registration is valid for only the types below and the root. This
+         * is where the default handlers get placed.
          */
         if ((node->type != ACPI_TYPE_DEVICE) &&
             (node->type != ACPI_TYPE_PROCESSOR) &&
@@ -848,8 +847,8 @@ acpi_ev_install_space_handler(struct acpi_namespace_node * node,
         obj_desc = acpi_ns_get_attached_object(node);
         if (obj_desc) {
                 /*
-                 * The attached device object already exists.
-                 * Make sure the handler is not already installed.
+                 * The attached device object already exists. Make sure the handler
+                 * is not already installed.
                  */
                 handler_obj = obj_desc->device.handler;
 
@@ -864,8 +863,8 @@ acpi_ev_install_space_handler(struct acpi_namespace_node * node,
                                     handler) {
                                         /*
                                          * It is (relatively) OK to attempt to install the SAME
-                                         * handler twice. This can easily happen
-                                         * with PCI_Config space.
+                                         * handler twice. This can easily happen with the
+                                         * PCI_Config space.
                                          */
                                         status = AE_SAME_HANDLER;
                                         goto unlock_and_exit;
@@ -925,9 +924,8 @@ acpi_ev_install_space_handler(struct acpi_namespace_node * node,
         /*
          * Install the handler
          *
-         * At this point there is no existing handler.
-         * Just allocate the object for the handler and link it
-         * into the list.
+         * At this point there is no existing handler. Just allocate the object
+         * for the handler and link it into the list.
          */
         handler_obj =
             acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_ADDRESS_HANDLER);
@@ -1000,11 +998,10 @@ acpi_ev_execute_reg_methods(struct acpi_namespace_node *node,
         ACPI_FUNCTION_TRACE(ev_execute_reg_methods);
 
         /*
-         * Run all _REG methods for all Operation Regions for this
-         * space ID.  This is a separate walk in order to handle any
-         * interdependencies between regions and _REG methods.  (i.e. handlers
-         * must be installed for all regions of this Space ID before we
-         * can run any _REG methods)
+         * Run all _REG methods for all Operation Regions for this space ID. This
+         * is a separate walk in order to handle any interdependencies between
+         * regions and _REG methods. (i.e. handlers must be installed for all
+         * regions of this Space ID before we can run any _REG methods)
          */
         status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, node, ACPI_UINT32_MAX,
                                         ACPI_NS_WALK_UNLOCK, acpi_ev_reg_run,
@@ -1042,8 +1039,8 @@ acpi_ev_reg_run(acpi_handle obj_handle,
         }
 
         /*
-         * We only care about regions.and objects
-         * that are allowed to have address space handlers
+         * We only care about regions.and objects that are allowed to have address
+         * space handlers
          */
         if ((node->type != ACPI_TYPE_REGION) && (node != acpi_gbl_root_node)) {
                 return (AE_OK);
@@ -1062,10 +1059,9 @@ acpi_ev_reg_run(acpi_handle obj_handle,
         /* Object is a Region */
 
         if (obj_desc->region.space_id != space_id) {
-                /*
-                 * This region is for a different address space
-                 * -- just ignore it
-                 */
+
+                /* This region is for a different address space, just ignore it */
+
                 return (AE_OK);
         }
 
diff --git a/drivers/acpi/events/evrgnini.c b/drivers/acpi/acpica/evrgnini.c
index 6b94b38df07d..f3f1fb45c3dc 100644
--- a/drivers/acpi/events/evrgnini.c
+++ b/drivers/acpi/acpica/evrgnini.c
@@ -42,8 +42,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acevents.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acevents.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evrgnini")
@@ -233,9 +234,9 @@ acpi_ev_pci_config_region_setup(acpi_handle handle,
                                 if (ACPI_FAILURE(status)) {
                                         if (status == AE_SAME_HANDLER) {
                                                 /*
-                                                 * It is OK if the handler is already installed on the root
-                                                 * bridge.  Still need to return a context object for the
-                                                 * new PCI_Config operation region, however.
+                                                 * It is OK if the handler is already installed on the
+                                                 * root bridge. Still need to return a context object
+                                                 * for the new PCI_Config operation region, however.
                                                  */
                                                 status = AE_OK;
                                         } else {
@@ -272,8 +273,8 @@ acpi_ev_pci_config_region_setup(acpi_handle handle,
         }
 
         /*
-         * For PCI_Config space access, we need the segment, bus,
-         * device and function numbers.  Acquire them here.
+         * For PCI_Config space access, we need the segment, bus, device and
+         * function numbers. Acquire them here.
          *
          * Find the parent device object. (This allows the operation region to be
          * within a subscope under the device, such as a control method.)
@@ -289,16 +290,16 @@ acpi_ev_pci_config_region_setup(acpi_handle handle,
         }
 
         /*
-         * Get the PCI device and function numbers from the _ADR object
-         * contained in the parent's scope.
+         * Get the PCI device and function numbers from the _ADR object contained
+         * in the parent's scope.
          */
         status =
             acpi_ut_evaluate_numeric_object(METHOD_NAME__ADR, pci_device_node,
                                             &pci_value);
 
         /*
-         * The default is zero, and since the allocation above zeroed
-         * the data, just do nothing on failure.
+         * The default is zero, and since the allocation above zeroed the data,
+         * just do nothing on failure.
          */
         if (ACPI_SUCCESS(status)) {
                 pci_id->device = ACPI_HIWORD(ACPI_LODWORD(pci_value));
@@ -382,9 +383,8 @@ static u8 acpi_ev_is_pci_root_bridge(struct acpi_namespace_node *node)
         struct acpi_compatible_id_list *cid;
         u32 i;
 
-        /*
-         * Get the _HID and check for a PCI Root Bridge
-         */
+        /* Get the _HID and check for a PCI Root Bridge */
+
         status = acpi_ut_execute_HID(node, &hid);
         if (ACPI_FAILURE(status)) {
                 return (FALSE);
@@ -394,10 +394,8 @@ static u8 acpi_ev_is_pci_root_bridge(struct acpi_namespace_node *node)
                 return (TRUE);
         }
 
-        /*
-         * The _HID did not match.
-         * Get the _CID and check for a PCI Root Bridge
-         */
+        /* The _HID did not match. Get the _CID and check for a PCI Root Bridge */
+
         status = acpi_ut_execute_CID(node, &cid);
         if (ACPI_FAILURE(status)) {
                 return (FALSE);
@@ -516,9 +514,9 @@ acpi_ev_default_region_setup(acpi_handle handle,
  *              Get the appropriate address space handler for a newly
  *              created region.
  *
- *              This also performs address space specific initialization.  For
+ *              This also performs address space specific initialization. For
  *              example, PCI regions must have an _ADR object that contains
- *              a PCI address in the scope of the definition.  This address is
+ *              a PCI address in the scope of the definition. This address is
  *              required to perform an access to PCI config space.
  *
  * MUTEX:       Interpreter should be unlocked, because we may run the _REG
@@ -572,7 +570,7 @@ acpi_ev_initialize_region(union acpi_operand_object *region_obj,
         if (ACPI_SUCCESS(status)) {
                 /*
                  * The _REG method is optional and there can be only one per region
-                 * definition.  This will be executed when the handler is attached
+                 * definition. This will be executed when the handler is attached
                  * or removed
                  */
                 region_obj2->extra.method_REG = method_node;
@@ -670,10 +668,8 @@ acpi_ev_initialize_region(union acpi_operand_object *region_obj,
                         }
                 }
 
-                /*
-                 * This node does not have the handler we need;
-                 * Pop up one level
-                 */
+                /* This node does not have the handler we need; Pop up one level */
+
                 node = acpi_ns_get_parent_node(node);
         }
 
diff --git a/drivers/acpi/events/evsci.c b/drivers/acpi/acpica/evsci.c
index 2a8b77877610..567b356c85af 100644
--- a/drivers/acpi/events/evsci.c
+++ b/drivers/acpi/acpica/evsci.c
@@ -43,7 +43,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acevents.h>
+#include "accommon.h"
+#include "acevents.h"
 
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evsci")
@@ -115,10 +116,8 @@ u32 ACPI_SYSTEM_XFACE acpi_ev_gpe_xrupt_handler(void *context)
          * if this interrupt handler is installed, ACPI is enabled.
          */
 
-        /*
-         * GPEs:
-         * Check for and dispatch any GPEs that have occurred
-         */
+        /* GPEs: Check for and dispatch any GPEs that have occurred */
+
         interrupt_handled |= acpi_ev_gpe_detect(gpe_xrupt_list);
 
         return_UINT32(interrupt_handled);
@@ -158,11 +157,11 @@ u32 acpi_ev_install_sci_handler(void)
  * RETURN:      E_OK if handler uninstalled OK, E_ERROR if handler was not
  *              installed to begin with
  *
- * DESCRIPTION: Remove the SCI interrupt handler.  No further SCIs will be
+ * DESCRIPTION: Remove the SCI interrupt handler. No further SCIs will be
  *              taken.
  *
  * Note:  It doesn't seem important to disable all events or set the event
- *        enable registers to their original values.  The OS should disable
+ *        enable registers to their original values. The OS should disable
  *        the SCI interrupt level when the handler is removed, so no more
  *        events will come in.
  *
diff --git a/drivers/acpi/events/evxface.c b/drivers/acpi/acpica/evxface.c
index 94a6efe020be..3aca9010a11e 100644
--- a/drivers/acpi/events/evxface.c
+++ b/drivers/acpi/acpica/evxface.c
@@ -42,9 +42,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acevents.h>
-#include <acpi/acinterp.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acevents.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evxface")
@@ -267,7 +268,7 @@ acpi_install_notify_handler(acpi_handle device,
         /*
          * Root Object:
          * Registering a notify handler on the root object indicates that the
-         * caller wishes to receive notifications for all objects.  Note that
+         * caller wishes to receive notifications for all objects. Note that
          * only one <external> global handler can be regsitered (per notify type).
          */
         if (device == ACPI_ROOT_OBJECT) {
diff --git a/drivers/acpi/events/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
index 41554f736b68..35485e4b60a6 100644
--- a/drivers/acpi/events/evxfevnt.c
+++ b/drivers/acpi/acpica/evxfevnt.c
@@ -42,13 +42,19 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acevents.h>
-#include <acpi/acnamesp.h>
-#include <acpi/actables.h>
+#include "accommon.h"
+#include "acevents.h"
+#include "acnamesp.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evxfevnt")
 
+/* Local prototypes */
+acpi_status
+acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+                       struct acpi_gpe_block_info *gpe_block, void *context);
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_enable
@@ -60,6 +66,7 @@ ACPI_MODULE_NAME("evxfevnt")
  * DESCRIPTION: Transfers the system into ACPI mode.
  *
  ******************************************************************************/
+
 acpi_status acpi_enable(void)
 {
         acpi_status status = AE_OK;
@@ -161,8 +168,8 @@ acpi_status acpi_enable_event(u32 event, u32 flags)
         }
 
         /*
-         * Enable the requested fixed event (by writing a one to the
-         * enable register bit)
+         * Enable the requested fixed event (by writing a one to the enable
+         * register bit)
          */
         status =
             acpi_set_register(acpi_gbl_fixed_event_info[event].
@@ -343,8 +350,8 @@ acpi_status acpi_disable_event(u32 event, u32 flags)
         }
 
         /*
-         * Disable the requested fixed event (by writing a zero to the
-         * enable register bit)
+         * Disable the requested fixed event (by writing a zero to the enable
+         * register bit)
          */
         status =
             acpi_set_register(acpi_gbl_fixed_event_info[event].
@@ -396,8 +403,8 @@ acpi_status acpi_clear_event(u32 event)
         }
 
         /*
-         * Clear the requested fixed event (By writing a one to the
-         * status register bit)
+         * Clear the requested fixed event (By writing a one to the status
+         * register bit)
          */
         status =
             acpi_set_register(acpi_gbl_fixed_event_info[event].
@@ -717,3 +724,148 @@ acpi_status acpi_remove_gpe_block(acpi_handle gpe_device)
 }
 
 ACPI_EXPORT_SYMBOL(acpi_remove_gpe_block)
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_get_gpe_device
+ *
+ * PARAMETERS:  Index               - System GPE index (0-current_gpe_count)
+ *              gpe_device          - Where the parent GPE Device is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Obtain the GPE device associated with the input index. A NULL
+ *              gpe device indicates that the gpe number is contained in one of
+ *              the FADT-defined gpe blocks. Otherwise, the GPE block device.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_get_gpe_device(u32 index, acpi_handle *gpe_device)
+{
+        struct acpi_gpe_device_info info;
+        acpi_status status;
+
+        ACPI_FUNCTION_TRACE(acpi_get_gpe_device);
+
+        if (!gpe_device) {
+                return_ACPI_STATUS(AE_BAD_PARAMETER);
+        }
+
+        if (index >= acpi_current_gpe_count) {
+                return_ACPI_STATUS(AE_NOT_EXIST);
+        }
+
+        /* Setup and walk the GPE list */
+
+        info.index = index;
+        info.status = AE_NOT_EXIST;
+        info.gpe_device = NULL;
+        info.next_block_base_index = 0;
+
+        status = acpi_ev_walk_gpe_list(acpi_ev_get_gpe_device, &info);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
+        *gpe_device = info.gpe_device;
+        return_ACPI_STATUS(info.status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_get_gpe_device)
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ev_get_gpe_device
+ *
+ * PARAMETERS:  GPE_WALK_CALLBACK
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Matches the input GPE index (0-current_gpe_count) with a GPE
+ *              block device. NULL if the GPE is one of the FADT-defined GPEs.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+                       struct acpi_gpe_block_info *gpe_block, void *context)
+{
+        struct acpi_gpe_device_info *info = context;
+
+        /* Increment Index by the number of GPEs in this block */
+
+        info->next_block_base_index +=
+            (gpe_block->register_count * ACPI_GPE_REGISTER_WIDTH);
+
+        if (info->index < info->next_block_base_index) {
+                /*
+                 * The GPE index is within this block, get the node. Leave the node
+                 * NULL for the FADT-defined GPEs
+                 */
+                if ((gpe_block->node)->type == ACPI_TYPE_DEVICE) {
+                        info->gpe_device = gpe_block->node;
+                }
+
+                info->status = AE_OK;
+                return (AE_CTRL_END);
+        }
+
+        return (AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_disable_all_gpes
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Disable and clear all GPEs in all GPE blocks
+ *
+ ******************************************************************************/
+
+acpi_status acpi_disable_all_gpes(void)
+{
+        acpi_status status;
+
+        ACPI_FUNCTION_TRACE(acpi_disable_all_gpes);
+
+        status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
+        status = acpi_hw_disable_all_gpes();
+        (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
+
+        return_ACPI_STATUS(status);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_enable_all_runtime_gpes
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Enable all "runtime" GPEs, in all GPE blocks
+ *
+ ******************************************************************************/
+
+acpi_status acpi_enable_all_runtime_gpes(void)
+{
+        acpi_status status;
+
+        ACPI_FUNCTION_TRACE(acpi_enable_all_runtime_gpes);
+
+        status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
+        status = acpi_hw_enable_all_runtime_gpes();
+        (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
+
+        return_ACPI_STATUS(status);
+}
diff --git a/drivers/acpi/events/evxfregn.c b/drivers/acpi/acpica/evxfregn.c
index e8750807e57d..479e7a3721be 100644
--- a/drivers/acpi/events/evxfregn.c
+++ b/drivers/acpi/acpica/evxfregn.c
@@ -43,8 +43,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acevents.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acevents.h"
 
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evxfregn")
diff --git a/drivers/acpi/executer/exconfig.c b/drivers/acpi/acpica/exconfig.c
index 74da6fa52ef1..932bbc26aa04 100644
--- a/drivers/acpi/executer/exconfig.c
+++ b/drivers/acpi/acpica/exconfig.c
@@ -42,10 +42,11 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
-#include <acpi/acnamesp.h>
-#include <acpi/actables.h>
-#include <acpi/acdispat.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "acnamesp.h"
+#include "actables.h"
+#include "acdispat.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exconfig")
diff --git a/drivers/acpi/executer/exconvrt.c b/drivers/acpi/acpica/exconvrt.c
index 1d1f35adddde..0be10188316e 100644
--- a/drivers/acpi/executer/exconvrt.c
+++ b/drivers/acpi/acpica/exconvrt.c
@@ -42,8 +42,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
-#include <acpi/amlcode.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "amlcode.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exconvrt")
diff --git a/drivers/acpi/executer/excreate.c b/drivers/acpi/acpica/excreate.c
index ad09696d5069..a57ad2564ab0 100644
--- a/drivers/acpi/executer/excreate.c
+++ b/drivers/acpi/acpica/excreate.c
@@ -42,9 +42,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
-#include <acpi/amlcode.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "amlcode.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("excreate")
diff --git a/drivers/acpi/executer/exdump.c b/drivers/acpi/acpica/exdump.c
index d087a7d28aa5..aa313574b0df 100644
--- a/drivers/acpi/executer/exdump.c
+++ b/drivers/acpi/acpica/exdump.c
@@ -42,9 +42,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
-#include <acpi/amlcode.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "amlcode.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exdump")
diff --git a/drivers/acpi/executer/exfield.c b/drivers/acpi/acpica/exfield.c
index 3e440d84226a..a352d0233857 100644
--- a/drivers/acpi/executer/exfield.c
+++ b/drivers/acpi/acpica/exfield.c
@@ -42,8 +42,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
+#include "accommon.h"
+#include "acdispat.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exfield")
diff --git a/drivers/acpi/executer/exfldio.c b/drivers/acpi/acpica/exfldio.c
index 9ff9d1f4615d..ef58ac4e687b 100644
--- a/drivers/acpi/executer/exfldio.c
+++ b/drivers/acpi/acpica/exfldio.c
@@ -42,10 +42,11 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
-#include <acpi/amlcode.h>
-#include <acpi/acevents.h>
-#include <acpi/acdispat.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "amlcode.h"
+#include "acevents.h"
+#include "acdispat.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exfldio")
@@ -498,14 +499,13 @@ acpi_ex_field_datum_io(union acpi_operand_object *obj_desc,
                         return_ACPI_STATUS(status);
                 }
 
-                ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
-                                  "I/O to Data Register: ValuePtr %p\n",
-                                  value));
-
                 if (read_write == ACPI_READ) {
 
                         /* Read the datum from the data_register */
 
+                        ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+                                          "Read from Data Register\n"));
+
                         status =
                             acpi_ex_extract_from_field(obj_desc->index_field.
                                                        data_obj, value,
@@ -513,6 +513,10 @@ acpi_ex_field_datum_io(union acpi_operand_object *obj_desc,
                 } else {
                         /* Write the datum to the data_register */
 
+                        ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
+                                          "Write to Data Register: Value %8.8X%8.8X\n",
+                                          ACPI_FORMAT_UINT64(*value)));
+
                         status =
                             acpi_ex_insert_into_field(obj_desc->index_field.
                                                       data_obj, value,
diff --git a/drivers/acpi/executer/exmisc.c b/drivers/acpi/acpica/exmisc.c
index efb191340059..6b0747ac683b 100644
--- a/drivers/acpi/executer/exmisc.c
+++ b/drivers/acpi/acpica/exmisc.c
@@ -43,9 +43,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
-#include <acpi/amlcode.h>
-#include <acpi/amlresrc.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "amlcode.h"
+#include "amlresrc.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exmisc")
diff --git a/drivers/acpi/executer/exmutex.c b/drivers/acpi/acpica/exmutex.c
index a8bf3d713e28..d301c1f363ef 100644
--- a/drivers/acpi/executer/exmutex.c
+++ b/drivers/acpi/acpica/exmutex.c
@@ -43,8 +43,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
-#include <acpi/acevents.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "acevents.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exmutex")
diff --git a/drivers/acpi/executer/exnames.c b/drivers/acpi/acpica/exnames.c
index 817e67be3697..ffdae122d94a 100644
--- a/drivers/acpi/executer/exnames.c
+++ b/drivers/acpi/acpica/exnames.c
@@ -43,8 +43,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
-#include <acpi/amlcode.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "amlcode.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exnames")
diff --git a/drivers/acpi/executer/exoparg1.c b/drivers/acpi/acpica/exoparg1.c
index f622f9eac8a1..b530480cc7d5 100644
--- a/drivers/acpi/executer/exoparg1.c
+++ b/drivers/acpi/acpica/exoparg1.c
@@ -43,11 +43,12 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
-#include <acpi/amlcode.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "amlcode.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exoparg1")
diff --git a/drivers/acpi/executer/exoparg2.c b/drivers/acpi/acpica/exoparg2.c
index 368def5dffce..0b4f513ca885 100644
--- a/drivers/acpi/executer/exoparg2.c
+++ b/drivers/acpi/acpica/exoparg2.c
@@ -42,10 +42,11 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/acinterp.h>
-#include <acpi/acevents.h>
-#include <acpi/amlcode.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "acinterp.h"
+#include "acevents.h"
+#include "amlcode.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exoparg2")
diff --git a/drivers/acpi/executer/exoparg3.c b/drivers/acpi/acpica/exoparg3.c
index 9cb4197681af..c6520bbf882b 100644
--- a/drivers/acpi/executer/exoparg3.c
+++ b/drivers/acpi/acpica/exoparg3.c
@@ -43,9 +43,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
-#include <acpi/acparser.h>
-#include <acpi/amlcode.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "acparser.h"
+#include "amlcode.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exoparg3")
diff --git a/drivers/acpi/executer/exoparg6.c b/drivers/acpi/acpica/exoparg6.c
index 67d48737af53..ae43f7670a6c 100644
--- a/drivers/acpi/executer/exoparg6.c
+++ b/drivers/acpi/acpica/exoparg6.c
@@ -43,9 +43,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
-#include <acpi/acparser.h>
-#include <acpi/amlcode.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "acparser.h"
+#include "amlcode.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exoparg6")
diff --git a/drivers/acpi/executer/exprep.c b/drivers/acpi/acpica/exprep.c
index a7dc87ecee37..a226f74d4a5c 100644
--- a/drivers/acpi/executer/exprep.c
+++ b/drivers/acpi/acpica/exprep.c
@@ -43,9 +43,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
-#include <acpi/amlcode.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "amlcode.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exprep")
diff --git a/drivers/acpi/executer/exregion.c b/drivers/acpi/acpica/exregion.c
index 7a41c409ae4d..76ec8ff903b8 100644
--- a/drivers/acpi/executer/exregion.c
+++ b/drivers/acpi/acpica/exregion.c
@@ -43,7 +43,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
+#include "accommon.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exregion")
diff --git a/drivers/acpi/executer/exresnte.c b/drivers/acpi/acpica/exresnte.c
index 423ad3635f3d..a063a74006f6 100644
--- a/drivers/acpi/executer/exresnte.c
+++ b/drivers/acpi/acpica/exresnte.c
@@ -43,9 +43,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exresnte")
diff --git a/drivers/acpi/executer/exresolv.c b/drivers/acpi/acpica/exresolv.c
index 60e8c47128e9..f6105a6d6126 100644
--- a/drivers/acpi/executer/exresolv.c
+++ b/drivers/acpi/acpica/exresolv.c
@@ -43,10 +43,11 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/amlcode.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "amlcode.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exresolv")
diff --git a/drivers/acpi/executer/exresop.c b/drivers/acpi/acpica/exresop.c
index 0bb82593da72..3c3802764bfb 100644
--- a/drivers/acpi/executer/exresop.c
+++ b/drivers/acpi/acpica/exresop.c
@@ -43,10 +43,11 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/amlcode.h>
-#include <acpi/acparser.h>
-#include <acpi/acinterp.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "amlcode.h"
+#include "acparser.h"
+#include "acinterp.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exresop")
diff --git a/drivers/acpi/executer/exstore.c b/drivers/acpi/acpica/exstore.c
index 1c118ba78adb..e35e9b4f6a4e 100644
--- a/drivers/acpi/executer/exstore.c
+++ b/drivers/acpi/acpica/exstore.c
@@ -43,10 +43,11 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
-#include <acpi/amlcode.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "amlcode.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exstore")
diff --git a/drivers/acpi/executer/exstoren.c b/drivers/acpi/acpica/exstoren.c
index eef61a00803e..145d15305f70 100644
--- a/drivers/acpi/executer/exstoren.c
+++ b/drivers/acpi/acpica/exstoren.c
@@ -44,8 +44,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
-#include <acpi/amlcode.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "amlcode.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exstoren")
diff --git a/drivers/acpi/executer/exstorob.c b/drivers/acpi/acpica/exstorob.c
index 9a75ff09fb0c..67340cc70142 100644
--- a/drivers/acpi/executer/exstorob.c
+++ b/drivers/acpi/acpica/exstorob.c
@@ -43,7 +43,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
+#include "accommon.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exstorob")
diff --git a/drivers/acpi/executer/exsystem.c b/drivers/acpi/acpica/exsystem.c
index 68990f1df371..3d00b9357233 100644
--- a/drivers/acpi/executer/exsystem.c
+++ b/drivers/acpi/acpica/exsystem.c
@@ -43,7 +43,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
+#include "accommon.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exsystem")
diff --git a/drivers/acpi/executer/exutils.c b/drivers/acpi/acpica/exutils.c
index 86c03880b523..32b85d68e756 100644
--- a/drivers/acpi/executer/exutils.c
+++ b/drivers/acpi/acpica/exutils.c
@@ -59,8 +59,9 @@
 #define DEFINE_AML_GLOBALS
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
-#include <acpi/amlcode.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "amlcode.h"
 
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exutils")
diff --git a/drivers/acpi/hardware/hwacpi.c b/drivers/acpi/acpica/hwacpi.c
index 816894ea839e..a9d4fea4167f 100644
--- a/drivers/acpi/hardware/hwacpi.c
+++ b/drivers/acpi/acpica/hwacpi.c
@@ -43,6 +43,7 @@
  */
 
 #include <acpi/acpi.h>
+#include "accommon.h"
 
 #define _COMPONENT          ACPI_HARDWARE
 ACPI_MODULE_NAME("hwacpi")
diff --git a/drivers/acpi/hardware/hwgpe.c b/drivers/acpi/acpica/hwgpe.c
index 0b80db9d9197..2013b66745d2 100644
--- a/drivers/acpi/hardware/hwgpe.c
+++ b/drivers/acpi/acpica/hwgpe.c
@@ -43,7 +43,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acevents.h>
+#include "accommon.h"
+#include "acevents.h"
 
 #define _COMPONENT          ACPI_HARDWARE
 ACPI_MODULE_NAME("hwgpe")
@@ -51,7 +52,8 @@ ACPI_MODULE_NAME("hwgpe")
 /* Local prototypes */
 static acpi_status
 acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
-                                struct acpi_gpe_block_info *gpe_block);
+                                struct acpi_gpe_block_info *gpe_block,
+                                void *context);
 
 /******************************************************************************
  *
@@ -80,8 +82,7 @@ acpi_status acpi_hw_low_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
 
         /* Get current value of the enable register that contains this GPE */
 
-        status = acpi_hw_low_level_read(ACPI_GPE_REGISTER_WIDTH, &enable_mask,
-                                        &gpe_register_info->enable_address);
+        status = acpi_read(&enable_mask, &gpe_register_info->enable_address);
         if (ACPI_FAILURE(status)) {
                 return (status);
         }
@@ -95,9 +96,7 @@ acpi_status acpi_hw_low_disable_gpe(struct acpi_gpe_event_info *gpe_event_info)
 
         /* Write the updated enable mask */
 
-        status = acpi_hw_low_level_write(ACPI_GPE_REGISTER_WIDTH, enable_mask,
-                                         &gpe_register_info->enable_address);
-
+        status = acpi_write(enable_mask, &gpe_register_info->enable_address);
         return (status);
 }
 
@@ -132,8 +131,8 @@ acpi_hw_write_gpe_enable_reg(struct acpi_gpe_event_info * gpe_event_info)
 
         /* Write the entire GPE (runtime) enable register */
 
-        status = acpi_hw_low_level_write(8, gpe_register_info->enable_for_run,
-                                         &gpe_register_info->enable_address);
+        status = acpi_write(gpe_register_info->enable_for_run,
+                            &gpe_register_info->enable_address);
 
         return (status);
 }
@@ -166,9 +165,8 @@ acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info * gpe_event_info)
          * Write a one to the appropriate bit in the status register to
          * clear this GPE.
          */
-        status = acpi_hw_low_level_write(8, register_bit,
-                                         &gpe_event_info->register_info->
-                                         status_address);
+        status = acpi_write(register_bit,
+                            &gpe_event_info->register_info->status_address);
 
         return (status);
 }
@@ -227,9 +225,7 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
 
         /* GPE currently active (status bit == 1)? */
 
-        status =
-            acpi_hw_low_level_read(8, &in_byte,
-                                   &gpe_register_info->status_address);
+        status = acpi_read(&in_byte, &gpe_register_info->status_address);
         if (ACPI_FAILURE(status)) {
                 goto unlock_and_exit;
         }
@@ -260,8 +256,8 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
  ******************************************************************************/
 
 acpi_status
-acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
-                          struct acpi_gpe_block_info * gpe_block)
+acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+                          struct acpi_gpe_block_info *gpe_block, void *context)
 {
         u32 i;
         acpi_status status;
@@ -272,9 +268,9 @@ acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
 
                 /* Disable all GPEs in this register */
 
-                status = acpi_hw_low_level_write(8, 0x00,
-                                                 &gpe_block->register_info[i].
-                                                 enable_address);
+                status =
+                    acpi_write(0x00,
+                               &gpe_block->register_info[i].enable_address);
                 if (ACPI_FAILURE(status)) {
                         return (status);
                 }
@@ -297,8 +293,8 @@ acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
  ******************************************************************************/
 
 acpi_status
-acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
-                        struct acpi_gpe_block_info * gpe_block)
+acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+                        struct acpi_gpe_block_info *gpe_block, void *context)
 {
         u32 i;
         acpi_status status;
@@ -309,9 +305,9 @@ acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
 
                 /* Clear status on all GPEs in this register */
 
-                status = acpi_hw_low_level_write(8, 0xFF,
-                                                 &gpe_block->register_info[i].
-                                                 status_address);
+                status =
+                    acpi_write(0xFF,
+                               &gpe_block->register_info[i].status_address);
                 if (ACPI_FAILURE(status)) {
                         return (status);
                 }
@@ -335,8 +331,8 @@ acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
  ******************************************************************************/
 
 acpi_status
-acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
-                                 struct acpi_gpe_block_info * gpe_block)
+acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
+                                 struct acpi_gpe_block_info *gpe_block, void *context)
 {
         u32 i;
         acpi_status status;
@@ -352,12 +348,9 @@ acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
 
                 /* Enable all "runtime" GPEs in this register */
 
-                status =
-                    acpi_hw_low_level_write(8,
-                                            gpe_block->register_info[i].
-                                            enable_for_run,
-                                            &gpe_block->register_info[i].
-                                            enable_address);
+                status = acpi_write(gpe_block->register_info[i].enable_for_run,
+                                    &gpe_block->register_info[i].
+                                    enable_address);
                 if (ACPI_FAILURE(status)) {
                         return (status);
                 }
@@ -382,7 +375,8 @@ acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info * gpe_xrupt_info,
 
 static acpi_status
 acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
-                                struct acpi_gpe_block_info *gpe_block)
+                                struct acpi_gpe_block_info *gpe_block,
+                                void *context)
 {
         u32 i;
         acpi_status status;
@@ -396,11 +390,9 @@ acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
 
                 /* Enable all "wake" GPEs in this register */
 
-                status = acpi_hw_low_level_write(8,
-                                                 gpe_block->register_info[i].
-                                                 enable_for_wake,
-                                                 &gpe_block->register_info[i].
-                                                 enable_address);
+                status = acpi_write(gpe_block->register_info[i].enable_for_wake,
+                                    &gpe_block->register_info[i].
+                                    enable_address);
                 if (ACPI_FAILURE(status)) {
                         return (status);
                 }
@@ -427,8 +419,8 @@ acpi_status acpi_hw_disable_all_gpes(void)
 
         ACPI_FUNCTION_TRACE(hw_disable_all_gpes);
 
-        status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block);
-        status = acpi_ev_walk_gpe_list(acpi_hw_clear_gpe_block);
+        status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block, NULL);
+        status = acpi_ev_walk_gpe_list(acpi_hw_clear_gpe_block, NULL);
         return_ACPI_STATUS(status);
 }
 
@@ -450,7 +442,7 @@ acpi_status acpi_hw_enable_all_runtime_gpes(void)
 
         ACPI_FUNCTION_TRACE(hw_enable_all_runtime_gpes);
 
-        status = acpi_ev_walk_gpe_list(acpi_hw_enable_runtime_gpe_block);
+        status = acpi_ev_walk_gpe_list(acpi_hw_enable_runtime_gpe_block, NULL);
         return_ACPI_STATUS(status);
 }
 
@@ -472,6 +464,6 @@ acpi_status acpi_hw_enable_all_wakeup_gpes(void)
 
         ACPI_FUNCTION_TRACE(hw_enable_all_wakeup_gpes);
 
-        status = acpi_ev_walk_gpe_list(acpi_hw_enable_wakeup_gpe_block);
+        status = acpi_ev_walk_gpe_list(acpi_hw_enable_wakeup_gpe_block, NULL);
         return_ACPI_STATUS(status);
 }
diff --git a/drivers/acpi/acpica/hwregs.c b/drivers/acpi/acpica/hwregs.c
new file mode 100644
index 000000000000..4dc43b018517
--- /dev/null
+++ b/drivers/acpi/acpica/hwregs.c
@@ -0,0 +1,353 @@
+
+/*******************************************************************************
+ *
+ * Module Name: hwregs - Read/write access functions for the various ACPI
+ *                       control and status registers.
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2008, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acevents.h"
+
+#define _COMPONENT          ACPI_HARDWARE
+ACPI_MODULE_NAME("hwregs")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_clear_acpi_status
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Clears all fixed and general purpose status bits
+ *              THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
+ *
+ ******************************************************************************/
+acpi_status acpi_hw_clear_acpi_status(void)
+{
+        acpi_status status;
+        acpi_cpu_flags lock_flags = 0;
+
+        ACPI_FUNCTION_TRACE(hw_clear_acpi_status);
+
+        ACPI_DEBUG_PRINT((ACPI_DB_IO, "About to write %04X to %04X\n",
+                          ACPI_BITMASK_ALL_FIXED_STATUS,
+                          (u16) acpi_gbl_FADT.xpm1a_event_block.address));
+
+        lock_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock);
+
+        status = acpi_hw_register_write(ACPI_REGISTER_PM1_STATUS,
+                                        ACPI_BITMASK_ALL_FIXED_STATUS);
+        if (ACPI_FAILURE(status)) {
+                goto unlock_and_exit;
+        }
+
+        /* Clear the fixed events */
+
+        if (acpi_gbl_FADT.xpm1b_event_block.address) {
+                status = acpi_write(ACPI_BITMASK_ALL_FIXED_STATUS,
+                                    &acpi_gbl_FADT.xpm1b_event_block);
+                if (ACPI_FAILURE(status)) {
+                        goto unlock_and_exit;
+                }
+        }
+
+        /* Clear the GPE Bits in all GPE registers in all GPE blocks */
+
+        status = acpi_ev_walk_gpe_list(acpi_hw_clear_gpe_block, NULL);
+
+      unlock_and_exit:
+        acpi_os_release_lock(acpi_gbl_hardware_lock, lock_flags);
+        return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_get_register_bit_mask
+ *
+ * PARAMETERS:  register_id         - Index of ACPI Register to access
+ *
+ * RETURN:      The bitmask to be used when accessing the register
+ *
+ * DESCRIPTION: Map register_id into a register bitmask.
+ *
+ ******************************************************************************/
+
+struct acpi_bit_register_info *acpi_hw_get_bit_register_info(u32 register_id)
+{
+        ACPI_FUNCTION_ENTRY();
+
+        if (register_id > ACPI_BITREG_MAX) {
+                ACPI_ERROR((AE_INFO, "Invalid BitRegister ID: %X",
+                            register_id));
+                return (NULL);
+        }
+
+        return (&acpi_gbl_bit_register_info[register_id]);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_register_read
+ *
+ * PARAMETERS:  register_id         - ACPI Register ID
+ *              return_value        - Where the register value is returned
+ *
+ * RETURN:      Status and the value read.
+ *
+ * DESCRIPTION: Read from the specified ACPI register
+ *
+ ******************************************************************************/
+acpi_status
+acpi_hw_register_read(u32 register_id, u32 * return_value)
+{
+        u32 value1 = 0;
+        u32 value2 = 0;
+        acpi_status status;
+
+        ACPI_FUNCTION_TRACE(hw_register_read);
+
+        switch (register_id) {
+        case ACPI_REGISTER_PM1_STATUS:  /* 16-bit access */
+
+                status = acpi_read(&value1, &acpi_gbl_FADT.xpm1a_event_block);
+                if (ACPI_FAILURE(status)) {
+                        goto exit;
+                }
+
+                /* PM1B is optional */
+
+                status = acpi_read(&value2, &acpi_gbl_FADT.xpm1b_event_block);
+                value1 |= value2;
+                break;
+
+        case ACPI_REGISTER_PM1_ENABLE:  /* 16-bit access */
+
+                status = acpi_read(&value1, &acpi_gbl_xpm1a_enable);
+                if (ACPI_FAILURE(status)) {
+                        goto exit;
+                }
+
+                /* PM1B is optional */
+
+                status = acpi_read(&value2, &acpi_gbl_xpm1b_enable);
+                value1 |= value2;
+                break;
+
+        case ACPI_REGISTER_PM1_CONTROL: /* 16-bit access */
+
+                status = acpi_read(&value1, &acpi_gbl_FADT.xpm1a_control_block);
+                if (ACPI_FAILURE(status)) {
+                        goto exit;
+                }
+
+                status = acpi_read(&value2, &acpi_gbl_FADT.xpm1b_control_block);
+                value1 |= value2;
+                break;
+
+        case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */
+
+                status = acpi_read(&value1, &acpi_gbl_FADT.xpm2_control_block);
+                break;
+
+        case ACPI_REGISTER_PM_TIMER:    /* 32-bit access */
+
+                status = acpi_read(&value1, &acpi_gbl_FADT.xpm_timer_block);
+                break;
+
+        case ACPI_REGISTER_SMI_COMMAND_BLOCK:   /* 8-bit access */
+
+                status =
+                    acpi_os_read_port(acpi_gbl_FADT.smi_command, &value1, 8);
+                break;
+
+        default:
+                ACPI_ERROR((AE_INFO, "Unknown Register ID: %X", register_id));
+                status = AE_BAD_PARAMETER;
+                break;
+        }
+
+      exit:
+
+        if (ACPI_SUCCESS(status)) {
+                *return_value = value1;
+        }
+
+        return_ACPI_STATUS(status);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_register_write
+ *
+ * PARAMETERS:  register_id         - ACPI Register ID
+ *              Value               - The value to write
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Write to the specified ACPI register
+ *
+ * NOTE: In accordance with the ACPI specification, this function automatically
+ * preserves the value of the following bits, meaning that these bits cannot be
+ * changed via this interface:
+ *
+ * PM1_CONTROL[0] = SCI_EN
+ * PM1_CONTROL[9]
+ * PM1_STATUS[11]
+ *
+ * ACPI References:
+ * 1) Hardware Ignored Bits: When software writes to a register with ignored
+ *      bit fields, it preserves the ignored bit fields
+ * 2) SCI_EN: OSPM always preserves this bit position
+ *
+ ******************************************************************************/
+
+acpi_status acpi_hw_register_write(u32 register_id, u32 value)
+{
+        acpi_status status;
+        u32 read_value;
+
+        ACPI_FUNCTION_TRACE(hw_register_write);
+
+        switch (register_id) {
+        case ACPI_REGISTER_PM1_STATUS:  /* 16-bit access */
+
+                /* Perform a read first to preserve certain bits (per ACPI spec) */
+
+                status = acpi_hw_register_read(ACPI_REGISTER_PM1_STATUS,
+                                               &read_value);
+                if (ACPI_FAILURE(status)) {
+                        goto exit;
+                }
+
+                /* Insert the bits to be preserved */
+
+                ACPI_INSERT_BITS(value, ACPI_PM1_STATUS_PRESERVED_BITS,
+                                 read_value);
+
+                /* Now we can write the data */
+
+                status = acpi_write(value, &acpi_gbl_FADT.xpm1a_event_block);
+                if (ACPI_FAILURE(status)) {
+                        goto exit;
+                }
+
+                /* PM1B is optional */
+
+                status = acpi_write(value, &acpi_gbl_FADT.xpm1b_event_block);
+                break;
+
+        case ACPI_REGISTER_PM1_ENABLE:  /* 16-bit access */
+
+                status = acpi_write(value, &acpi_gbl_xpm1a_enable);
+                if (ACPI_FAILURE(status)) {
+                        goto exit;
+                }
+
+                /* PM1B is optional */
+
+                status = acpi_write(value, &acpi_gbl_xpm1b_enable);
+                break;
+
+        case ACPI_REGISTER_PM1_CONTROL: /* 16-bit access */
+
+                /*
+                 * Perform a read first to preserve certain bits (per ACPI spec)
+                 */
+                status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL,
+                                               &read_value);
+                if (ACPI_FAILURE(status)) {
+                        goto exit;
+                }
+
+                /* Insert the bits to be preserved */
+
+                ACPI_INSERT_BITS(value, ACPI_PM1_CONTROL_PRESERVED_BITS,
+                                 read_value);
+
+                /* Now we can write the data */
+
+                status = acpi_write(value, &acpi_gbl_FADT.xpm1a_control_block);
+                if (ACPI_FAILURE(status)) {
+                        goto exit;
+                }
+
+                status = acpi_write(value, &acpi_gbl_FADT.xpm1b_control_block);
+                break;
+
+        case ACPI_REGISTER_PM1A_CONTROL:        /* 16-bit access */
+
+                status = acpi_write(value, &acpi_gbl_FADT.xpm1a_control_block);
+                break;
+
+        case ACPI_REGISTER_PM1B_CONTROL:        /* 16-bit access */
+
+                status = acpi_write(value, &acpi_gbl_FADT.xpm1b_control_block);
+                break;
+
+        case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */
+
+                status = acpi_write(value, &acpi_gbl_FADT.xpm2_control_block);
+                break;
+
+        case ACPI_REGISTER_PM_TIMER:    /* 32-bit access */
+
+                status = acpi_write(value, &acpi_gbl_FADT.xpm_timer_block);
+                break;
+
+        case ACPI_REGISTER_SMI_COMMAND_BLOCK:   /* 8-bit access */
+
+                /* SMI_CMD is currently always in IO space */
+
+                status =
+                    acpi_os_write_port(acpi_gbl_FADT.smi_command, value, 8);
+                break;
+
+        default:
+                status = AE_BAD_PARAMETER;
+                break;
+        }
+
+      exit:
+        return_ACPI_STATUS(status);
+}
diff --git a/drivers/acpi/hardware/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index 25dccdf179b9..a2af2a4f2f26 100644
--- a/drivers/acpi/hardware/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -43,7 +43,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/actables.h>
+#include "accommon.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_HARDWARE
 ACPI_MODULE_NAME("hwsleep")
@@ -52,31 +53,19 @@ ACPI_MODULE_NAME("hwsleep")
  *
  * FUNCTION:    acpi_set_firmware_waking_vector
  *
- * PARAMETERS:  physical_address    - Physical address of ACPI real mode
+ * PARAMETERS:  physical_address    - 32-bit physical address of ACPI real mode
  *                                    entry point.
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Access function for the firmware_waking_vector field in FACS
+ * DESCRIPTION: Sets the 32-bit firmware_waking_vector field of the FACS
  *
  ******************************************************************************/
 acpi_status
-acpi_set_firmware_waking_vector(acpi_physical_address physical_address)
+acpi_set_firmware_waking_vector(u32 physical_address)
 {
-        struct acpi_table_facs *facs;
-        acpi_status status;
-
         ACPI_FUNCTION_TRACE(acpi_set_firmware_waking_vector);
 
-        /* Get the FACS */
-
-        status = acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
-                                         ACPI_CAST_INDIRECT_PTR(struct
-                                                                acpi_table_header,
-                                                                &facs));
-        if (ACPI_FAILURE(status)) {
-                return_ACPI_STATUS(status);
-        }
 
         /*
          * According to the ACPI specification 2.0c and later, the 64-bit
@@ -85,10 +74,16 @@ acpi_set_firmware_waking_vector(acpi_physical_address physical_address)
          * Protected Mode.  Some systems (for example HP dv5-1004nr) are known
          * to fail to resume if the 64-bit vector is used.
          */
-        if (facs->version >= 1)
-                facs->xfirmware_waking_vector = 0;
 
-        facs->firmware_waking_vector = (u32)physical_address;
+        /* Set the 32-bit vector */
+
+        acpi_gbl_FACS->firmware_waking_vector = physical_address;
+
+        /* Clear the 64-bit vector if it exists */
+
+        if ((acpi_gbl_FACS->length > 32) && (acpi_gbl_FACS->version >= 1)) {
+                acpi_gbl_FACS->xfirmware_waking_vector = 0;
+        }
 
         return_ACPI_STATUS(AE_OK);
 }
@@ -97,48 +92,39 @@ ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector)
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_get_firmware_waking_vector
+ * FUNCTION:    acpi_set_firmware_waking_vector64
  *
- * PARAMETERS:  *physical_address   - Where the contents of
- *                                    the firmware_waking_vector field of
- *                                    the FACS will be returned.
+ * PARAMETERS:  physical_address    - 64-bit physical address of ACPI protected
+ *                                    mode entry point.
  *
- * RETURN:      Status, vector
+ * RETURN:      Status
  *
- * DESCRIPTION: Access function for the firmware_waking_vector field in FACS
+ * DESCRIPTION: Sets the 64-bit X_firmware_waking_vector field of the FACS, if
+ *              it exists in the table.
  *
  ******************************************************************************/
-#ifdef ACPI_FUTURE_USAGE
 acpi_status
-acpi_get_firmware_waking_vector(acpi_physical_address * physical_address)
+acpi_set_firmware_waking_vector64(u64 physical_address)
 {
-        struct acpi_table_facs *facs;
-        acpi_status status;
+        ACPI_FUNCTION_TRACE(acpi_set_firmware_waking_vector64);
 
-        ACPI_FUNCTION_TRACE(acpi_get_firmware_waking_vector);
-
-        if (!physical_address) {
-                return_ACPI_STATUS(AE_BAD_PARAMETER);
-        }
 
-        /* Get the FACS */
+        /* Determine if the 64-bit vector actually exists */
 
-        status = acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
-                                         ACPI_CAST_INDIRECT_PTR(struct
-                                                                acpi_table_header,
-                                                                &facs));
-        if (ACPI_FAILURE(status)) {
-                return_ACPI_STATUS(status);
+        if ((acpi_gbl_FACS->length <= 32) || (acpi_gbl_FACS->version < 1)) {
+                return_ACPI_STATUS(AE_NOT_EXIST);
         }
 
-        /* Get the vector */
-        *physical_address = (acpi_physical_address)facs->firmware_waking_vector;
+        /* Clear 32-bit vector, set the 64-bit X_ vector */
+
+        acpi_gbl_FACS->firmware_waking_vector = 0;
+        acpi_gbl_FACS->xfirmware_waking_vector = physical_address;
 
         return_ACPI_STATUS(AE_OK);
 }
 
-ACPI_EXPORT_SYMBOL(acpi_get_firmware_waking_vector)
-#endif
+ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector64)
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_enter_sleep_state_prep
diff --git a/drivers/acpi/hardware/hwtimer.c b/drivers/acpi/acpica/hwtimer.c
index b53d575491b9..b7f522c8f023 100644
--- a/drivers/acpi/hardware/hwtimer.c
+++ b/drivers/acpi/acpica/hwtimer.c
@@ -43,6 +43,7 @@
  */
 
 #include <acpi/acpi.h>
+#include "accommon.h"
 
 #define _COMPONENT          ACPI_HARDWARE
 ACPI_MODULE_NAME("hwtimer")
diff --git a/drivers/acpi/hardware/hwregs.c b/drivers/acpi/acpica/hwxface.c
index ddf792adcf96..ae597c0ab53f 100644
--- a/drivers/acpi/hardware/hwregs.c
+++ b/drivers/acpi/acpica/hwxface.c
@@ -1,10 +1,9 @@
 
-/*******************************************************************************
+/******************************************************************************
  *
- * Module Name: hwregs - Read/write access functions for the various ACPI
- *                       control and status registers.
+ * Module Name: hwxface - Public ACPICA hardware interfaces
  *
- ******************************************************************************/
+ *****************************************************************************/
 
 /*
  * Copyright (C) 2000 - 2008, Intel Corp.
@@ -44,209 +43,208 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acevents.h>
+#include "accommon.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_HARDWARE
-ACPI_MODULE_NAME("hwregs")
+ACPI_MODULE_NAME("hwxface")
 
-/*******************************************************************************
+/******************************************************************************
  *
- * FUNCTION:    acpi_hw_clear_acpi_status
+ * FUNCTION:    acpi_reset
  *
  * PARAMETERS:  None
  *
- * RETURN:      None
+ * RETURN:      Status
  *
- * DESCRIPTION: Clears all fixed and general purpose status bits
- *              THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
+ * DESCRIPTION: Set reset register in memory or IO space. Note: Does not
+ *              support reset register in PCI config space, this must be
+ *              handled separately.
  *
  ******************************************************************************/
-acpi_status acpi_hw_clear_acpi_status(void)
+acpi_status acpi_reset(void)
 {
+        struct acpi_generic_address *reset_reg;
         acpi_status status;
-        acpi_cpu_flags lock_flags = 0;
 
-        ACPI_FUNCTION_TRACE(hw_clear_acpi_status);
+        ACPI_FUNCTION_TRACE(acpi_reset);
 
-        ACPI_DEBUG_PRINT((ACPI_DB_IO, "About to write %04X to %04X\n",
-                          ACPI_BITMASK_ALL_FIXED_STATUS,
-                          (u16) acpi_gbl_FADT.xpm1a_event_block.address));
+        reset_reg = &acpi_gbl_FADT.reset_register;
 
-        lock_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock);
+        /* Check if the reset register is supported */
 
-        status = acpi_hw_register_write(ACPI_REGISTER_PM1_STATUS,
-                                        ACPI_BITMASK_ALL_FIXED_STATUS);
-        if (ACPI_FAILURE(status)) {
-                goto unlock_and_exit;
+        if (!(acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER) ||
+            !reset_reg->address) {
+                return_ACPI_STATUS(AE_NOT_EXIST);
         }
 
-        /* Clear the fixed events */
-
-        if (acpi_gbl_FADT.xpm1b_event_block.address) {
-                status =
-                    acpi_hw_low_level_write(16, ACPI_BITMASK_ALL_FIXED_STATUS,
-                                            &acpi_gbl_FADT.xpm1b_event_block);
-                if (ACPI_FAILURE(status)) {
-                        goto unlock_and_exit;
-                }
-        }
-
-        /* Clear the GPE Bits in all GPE registers in all GPE blocks */
-
-        status = acpi_ev_walk_gpe_list(acpi_hw_clear_gpe_block);
+        /* Write the reset value to the reset register */
 
-      unlock_and_exit:
-        acpi_os_release_lock(acpi_gbl_hardware_lock, lock_flags);
+        status = acpi_write(acpi_gbl_FADT.reset_value, reset_reg);
         return_ACPI_STATUS(status);
 }
 
-/*******************************************************************************
+ACPI_EXPORT_SYMBOL(acpi_reset)
+
+/******************************************************************************
  *
- * FUNCTION:    acpi_get_sleep_type_data
+ * FUNCTION:    acpi_read
  *
- * PARAMETERS:  sleep_state         - Numeric sleep state
- *              *sleep_type_a        - Where SLP_TYPa is returned
- *              *sleep_type_b        - Where SLP_TYPb is returned
+ * PARAMETERS:  Value               - Where the value is returned
+ *              Reg                 - GAS register structure
  *
- * RETURN:      Status - ACPI status
+ * RETURN:      Status
  *
- * DESCRIPTION: Obtain the SLP_TYPa and SLP_TYPb values for the requested sleep
- *              state.
+ * DESCRIPTION: Read from either memory or IO space.
  *
  ******************************************************************************/
-
-acpi_status
-acpi_get_sleep_type_data(u8 sleep_state, u8 * sleep_type_a, u8 * sleep_type_b)
+acpi_status acpi_read(u32 *value, struct acpi_generic_address *reg)
 {
-        acpi_status status = AE_OK;
-        struct acpi_evaluate_info *info;
-
-        ACPI_FUNCTION_TRACE(acpi_get_sleep_type_data);
-
-        /* Validate parameters */
-
-        if ((sleep_state > ACPI_S_STATES_MAX) || !sleep_type_a || !sleep_type_b) {
-                return_ACPI_STATUS(AE_BAD_PARAMETER);
-        }
+        u32 width;
+        u64 address;
+        acpi_status status;
 
-        /* Allocate the evaluation information block */
+        ACPI_FUNCTION_NAME(acpi_read);
 
-        info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
-        if (!info) {
-                return_ACPI_STATUS(AE_NO_MEMORY);
+        /*
+         * Must have a valid pointer to a GAS structure, and
+         * a non-zero address within. However, don't return an error
+         * because the PM1A/B code must not fail if B isn't present.
+         */
+        if (!reg) {
+                return (AE_OK);
         }
 
-        info->pathname =
-            ACPI_CAST_PTR(char, acpi_gbl_sleep_state_names[sleep_state]);
-
-        /* Evaluate the namespace object containing the values for this state */
-
-        status = acpi_ns_evaluate(info);
-        if (ACPI_FAILURE(status)) {
-                ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
-                                  "%s while evaluating SleepState [%s]\n",
-                                  acpi_format_exception(status),
-                                  info->pathname));
+        /* Get a local copy of the address. Handles possible alignment issues */
 
-                goto cleanup;
+        ACPI_MOVE_64_TO_64(&address, &reg->address);
+        if (!address) {
+                return (AE_OK);
         }
 
-        /* Must have a return object */
+        /* Supported widths are 8/16/32 */
 
-        if (!info->return_object) {
-                ACPI_ERROR((AE_INFO, "No Sleep State object returned from [%s]",
-                            info->pathname));
-                status = AE_NOT_EXIST;
+        width = reg->bit_width;
+        if ((width != 8) && (width != 16) && (width != 32)) {
+                return (AE_SUPPORT);
         }
 
-        /* It must be of type Package */
+        /* Initialize entire 32-bit return value to zero */
 
-        else if (ACPI_GET_OBJECT_TYPE(info->return_object) != ACPI_TYPE_PACKAGE) {
-                ACPI_ERROR((AE_INFO,
-                            "Sleep State return object is not a Package"));
-                status = AE_AML_OPERAND_TYPE;
-        }
+        *value = 0;
 
         /*
-         * The package must have at least two elements. NOTE (March 2005): This
-         * goes against the current ACPI spec which defines this object as a
-         * package with one encoded DWORD element. However, existing practice
-         * by BIOS vendors seems to be to have 2 or more elements, at least
-         * one per sleep type (A/B).
+         * Two address spaces supported: Memory or IO.
+         * PCI_Config is not supported here because the GAS struct is insufficient
          */
-        else if (info->return_object->package.count < 2) {
-                ACPI_ERROR((AE_INFO,
-                            "Sleep State return package does not have at least two elements"));
-                status = AE_AML_NO_OPERAND;
-        }
+        switch (reg->space_id) {
+        case ACPI_ADR_SPACE_SYSTEM_MEMORY:
 
-        /* The first two elements must both be of type Integer */
+                status = acpi_os_read_memory((acpi_physical_address) address,
+                                             value, width);
+                break;
 
-        else if ((ACPI_GET_OBJECT_TYPE(info->return_object->package.elements[0])
-                  != ACPI_TYPE_INTEGER) ||
-                 (ACPI_GET_OBJECT_TYPE(info->return_object->package.elements[1])
-                  != ACPI_TYPE_INTEGER)) {
-                ACPI_ERROR((AE_INFO,
-                            "Sleep State return package elements are not both Integers (%s, %s)",
-                            acpi_ut_get_object_type_name(info->return_object->
-                                                         package.elements[0]),
-                            acpi_ut_get_object_type_name(info->return_object->
-                                                         package.elements[1])));
-                status = AE_AML_OPERAND_TYPE;
-        } else {
-                /* Valid _Sx_ package size, type, and value */
+        case ACPI_ADR_SPACE_SYSTEM_IO:
 
-                *sleep_type_a = (u8)
-                    (info->return_object->package.elements[0])->integer.value;
-                *sleep_type_b = (u8)
-                    (info->return_object->package.elements[1])->integer.value;
-        }
+                status =
+                    acpi_os_read_port((acpi_io_address) address, value, width);
+                break;
 
-        if (ACPI_FAILURE(status)) {
-                ACPI_EXCEPTION((AE_INFO, status,
-                                "While evaluating SleepState [%s], bad Sleep object %p type %s",
-                                info->pathname, info->return_object,
-                                acpi_ut_get_object_type_name(info->
-                                                             return_object)));
+        default:
+                ACPI_ERROR((AE_INFO,
+                            "Unsupported address space: %X", reg->space_id));
+                return (AE_BAD_PARAMETER);
         }
 
-        acpi_ut_remove_reference(info->return_object);
+        ACPI_DEBUG_PRINT((ACPI_DB_IO,
+                          "Read:  %8.8X width %2d from %8.8X%8.8X (%s)\n",
+                          *value, width, ACPI_FORMAT_UINT64(address),
+                          acpi_ut_get_region_name(reg->space_id)));
 
-      cleanup:
-        ACPI_FREE(info);
-        return_ACPI_STATUS(status);
+        return (status);
 }
 
-ACPI_EXPORT_SYMBOL(acpi_get_sleep_type_data)
+ACPI_EXPORT_SYMBOL(acpi_read)
 
-/*******************************************************************************
+/******************************************************************************
  *
- * FUNCTION:    acpi_hw_get_register_bit_mask
+ * FUNCTION:    acpi_write
  *
- * PARAMETERS:  register_id         - Index of ACPI Register to access
+ * PARAMETERS:  Value               - To be written
+ *              Reg                 - GAS register structure
  *
- * RETURN:      The bitmask to be used when accessing the register
+ * RETURN:      Status
  *
- * DESCRIPTION: Map register_id into a register bitmask.
+ * DESCRIPTION: Write to either memory or IO space.
  *
  ******************************************************************************/
-struct acpi_bit_register_info *acpi_hw_get_bit_register_info(u32 register_id)
+acpi_status acpi_write(u32 value, struct acpi_generic_address *reg)
 {
-        ACPI_FUNCTION_ENTRY();
+        u32 width;
+        u64 address;
+        acpi_status status;
 
-        if (register_id > ACPI_BITREG_MAX) {
-                ACPI_ERROR((AE_INFO, "Invalid BitRegister ID: %X",
-                            register_id));
-                return (NULL);
+        ACPI_FUNCTION_NAME(acpi_write);
+
+        /*
+         * Must have a valid pointer to a GAS structure, and
+         * a non-zero address within. However, don't return an error
+         * because the PM1A/B code must not fail if B isn't present.
+         */
+        if (!reg) {
+                return (AE_OK);
         }
 
-        return (&acpi_gbl_bit_register_info[register_id]);
+        /* Get a local copy of the address. Handles possible alignment issues */
+
+        ACPI_MOVE_64_TO_64(&address, &reg->address);
+        if (!address) {
+                return (AE_OK);
+        }
+
+        /* Supported widths are 8/16/32 */
+
+        width = reg->bit_width;
+        if ((width != 8) && (width != 16) && (width != 32)) {
+                return (AE_SUPPORT);
+        }
+
+        /*
+         * Two address spaces supported: Memory or IO.
+         * PCI_Config is not supported here because the GAS struct is insufficient
+         */
+        switch (reg->space_id) {
+        case ACPI_ADR_SPACE_SYSTEM_MEMORY:
+
+                status = acpi_os_write_memory((acpi_physical_address) address,
+                                              value, width);
+                break;
+
+        case ACPI_ADR_SPACE_SYSTEM_IO:
+
+                status = acpi_os_write_port((acpi_io_address) address, value,
+                                            width);
+                break;
+
+        default:
+                ACPI_ERROR((AE_INFO,
+                            "Unsupported address space: %X", reg->space_id));
+                return (AE_BAD_PARAMETER);
+        }
+
+        ACPI_DEBUG_PRINT((ACPI_DB_IO,
+                          "Wrote: %8.8X width %2d   to %8.8X%8.8X (%s)\n",
+                          value, width, ACPI_FORMAT_UINT64(address),
+                          acpi_ut_get_region_name(reg->space_id)));
+
+        return (status);
 }
 
+ACPI_EXPORT_SYMBOL(acpi_write)
+
 /*******************************************************************************
  *
- * FUNCTION:    acpi_get_register
+ * FUNCTION:    acpi_get_register_unlocked
  *
  * PARAMETERS:  register_id     - ID of ACPI bit_register to access
  *              return_value    - Value that was read from the register
@@ -254,17 +252,16 @@ struct acpi_bit_register_info *acpi_hw_get_bit_register_info(u32 register_id)
  * RETURN:      Status and the value read from specified Register. Value
  *              returned is normalized to bit0 (is shifted all the way right)
  *
- * DESCRIPTION: ACPI bit_register read function.
+ * DESCRIPTION: ACPI bit_register read function. Does not acquire the HW lock.
  *
  ******************************************************************************/
-
-acpi_status acpi_get_register_unlocked(u32 register_id, u32 * return_value)
+acpi_status acpi_get_register_unlocked(u32 register_id, u32 *return_value)
 {
         u32 register_value = 0;
         struct acpi_bit_register_info *bit_reg_info;
         acpi_status status;
 
-        ACPI_FUNCTION_TRACE(acpi_get_register);
+        ACPI_FUNCTION_TRACE(acpi_get_register_unlocked);
 
         /* Get the info structure corresponding to the requested ACPI Register */
 
@@ -296,14 +293,31 @@ acpi_status acpi_get_register_unlocked(u32 register_id, u32 * return_value)
         return_ACPI_STATUS(status);
 }
 
-acpi_status acpi_get_register(u32 register_id, u32 * return_value)
+ACPI_EXPORT_SYMBOL(acpi_get_register_unlocked)
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_get_register
+ *
+ * PARAMETERS:  register_id     - ID of ACPI bit_register to access
+ *              return_value    - Value that was read from the register
+ *
+ * RETURN:      Status and the value read from specified Register. Value
+ *              returned is normalized to bit0 (is shifted all the way right)
+ *
+ * DESCRIPTION: ACPI bit_register read function.
+ *
+ ******************************************************************************/
+acpi_status acpi_get_register(u32 register_id, u32 *return_value)
 {
         acpi_status status;
         acpi_cpu_flags flags;
+
         flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock);
         status = acpi_get_register_unlocked(register_id, return_value);
         acpi_os_release_lock(acpi_gbl_hardware_lock, flags);
-        return status;
+
+        return (status);
 }
 
 ACPI_EXPORT_SYMBOL(acpi_get_register)
@@ -370,8 +384,9 @@ acpi_status acpi_set_register(u32 register_id, u32 value)
                                                    bit_reg_info->
                                                    access_bit_mask);
                 if (value) {
-                        status = acpi_hw_register_write(ACPI_REGISTER_PM1_STATUS,
-                                                        (u16) value);
+                        status =
+                            acpi_hw_register_write(ACPI_REGISTER_PM1_STATUS,
+                                                   (u16) value);
                         register_value = 0;
                 }
                 break;
@@ -459,399 +474,120 @@ acpi_status acpi_set_register(u32 register_id, u32 value)
 
 ACPI_EXPORT_SYMBOL(acpi_set_register)
 
-/******************************************************************************
+/*******************************************************************************
  *
- * FUNCTION:    acpi_hw_register_read
+ * FUNCTION:    acpi_get_sleep_type_data
  *
- * PARAMETERS:  register_id         - ACPI Register ID
- *              return_value        - Where the register value is returned
+ * PARAMETERS:  sleep_state         - Numeric sleep state
+ *              *sleep_type_a        - Where SLP_TYPa is returned
+ *              *sleep_type_b        - Where SLP_TYPb is returned
  *
- * RETURN:      Status and the value read.
+ * RETURN:      Status - ACPI status
  *
- * DESCRIPTION: Read from the specified ACPI register
+ * DESCRIPTION: Obtain the SLP_TYPa and SLP_TYPb values for the requested sleep
+ *              state.
  *
  ******************************************************************************/
 acpi_status
-acpi_hw_register_read(u32 register_id, u32 * return_value)
+acpi_get_sleep_type_data(u8 sleep_state, u8 *sleep_type_a, u8 *sleep_type_b)
 {
-        u32 value1 = 0;
-        u32 value2 = 0;
-        acpi_status status;
-
-        ACPI_FUNCTION_TRACE(hw_register_read);
-
-        switch (register_id) {
-        case ACPI_REGISTER_PM1_STATUS:  /* 16-bit access */
-
-                status =
-                    acpi_hw_low_level_read(16, &value1,
-                                           &acpi_gbl_FADT.xpm1a_event_block);
-                if (ACPI_FAILURE(status)) {
-                        goto exit;
-                }
-
-                /* PM1B is optional */
-
-                status =
-                    acpi_hw_low_level_read(16, &value2,
-                                           &acpi_gbl_FADT.xpm1b_event_block);
-                value1 |= value2;
-                break;
-
-        case ACPI_REGISTER_PM1_ENABLE:  /* 16-bit access */
-
-                status =
-                    acpi_hw_low_level_read(16, &value1, &acpi_gbl_xpm1a_enable);
-                if (ACPI_FAILURE(status)) {
-                        goto exit;
-                }
-
-                /* PM1B is optional */
-
-                status =
-                    acpi_hw_low_level_read(16, &value2, &acpi_gbl_xpm1b_enable);
-                value1 |= value2;
-                break;
-
-        case ACPI_REGISTER_PM1_CONTROL: /* 16-bit access */
-
-                status =
-                    acpi_hw_low_level_read(16, &value1,
-                                           &acpi_gbl_FADT.xpm1a_control_block);
-                if (ACPI_FAILURE(status)) {
-                        goto exit;
-                }
-
-                status =
-                    acpi_hw_low_level_read(16, &value2,
-                                           &acpi_gbl_FADT.xpm1b_control_block);
-                value1 |= value2;
-                break;
-
-        case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */
-
-                status =
-                    acpi_hw_low_level_read(8, &value1,
-                                           &acpi_gbl_FADT.xpm2_control_block);
-                break;
-
-        case ACPI_REGISTER_PM_TIMER:    /* 32-bit access */
-
-                status =
-                    acpi_hw_low_level_read(32, &value1,
-                                           &acpi_gbl_FADT.xpm_timer_block);
-                break;
+        acpi_status status = AE_OK;
+        struct acpi_evaluate_info *info;
 
-        case ACPI_REGISTER_SMI_COMMAND_BLOCK:   /* 8-bit access */
+        ACPI_FUNCTION_TRACE(acpi_get_sleep_type_data);
 
-                status =
-                    acpi_os_read_port(acpi_gbl_FADT.smi_command, &value1, 8);
-                break;
+        /* Validate parameters */
 
-        default:
-                ACPI_ERROR((AE_INFO, "Unknown Register ID: %X", register_id));
-                status = AE_BAD_PARAMETER;
-                break;
+        if ((sleep_state > ACPI_S_STATES_MAX) || !sleep_type_a || !sleep_type_b) {
+                return_ACPI_STATUS(AE_BAD_PARAMETER);
         }
 
-      exit:
+        /* Allocate the evaluation information block */
 
-        if (ACPI_SUCCESS(status)) {
-                *return_value = value1;
+        info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+        if (!info) {
+                return_ACPI_STATUS(AE_NO_MEMORY);
         }
 
-        return_ACPI_STATUS(status);
-}
-
-/******************************************************************************
- *
- * FUNCTION:    acpi_hw_register_write
- *
- * PARAMETERS:  register_id         - ACPI Register ID
- *              Value               - The value to write
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Write to the specified ACPI register
- *
- * NOTE: In accordance with the ACPI specification, this function automatically
- * preserves the value of the following bits, meaning that these bits cannot be
- * changed via this interface:
- *
- * PM1_CONTROL[0] = SCI_EN
- * PM1_CONTROL[9]
- * PM1_STATUS[11]
- *
- * ACPI References:
- * 1) Hardware Ignored Bits: When software writes to a register with ignored
- *      bit fields, it preserves the ignored bit fields
- * 2) SCI_EN: OSPM always preserves this bit position
- *
- ******************************************************************************/
-
-acpi_status acpi_hw_register_write(u32 register_id, u32 value)
-{
-        acpi_status status;
-        u32 read_value;
-
-        ACPI_FUNCTION_TRACE(hw_register_write);
-
-        switch (register_id) {
-        case ACPI_REGISTER_PM1_STATUS:  /* 16-bit access */
-
-                /* Perform a read first to preserve certain bits (per ACPI spec) */
-
-                status = acpi_hw_register_read(ACPI_REGISTER_PM1_STATUS,
-                                               &read_value);
-                if (ACPI_FAILURE(status)) {
-                        goto exit;
-                }
-
-                /* Insert the bits to be preserved */
-
-                ACPI_INSERT_BITS(value, ACPI_PM1_STATUS_PRESERVED_BITS,
-                                 read_value);
-
-                /* Now we can write the data */
-
-                status =
-                    acpi_hw_low_level_write(16, value,
-                                            &acpi_gbl_FADT.xpm1a_event_block);
-                if (ACPI_FAILURE(status)) {
-                        goto exit;
-                }
-
-                /* PM1B is optional */
-
-                status =
-                    acpi_hw_low_level_write(16, value,
-                                            &acpi_gbl_FADT.xpm1b_event_block);
-                break;
-
-        case ACPI_REGISTER_PM1_ENABLE:  /* 16-bit access */
-
-                status =
-                    acpi_hw_low_level_write(16, value, &acpi_gbl_xpm1a_enable);
-                if (ACPI_FAILURE(status)) {
-                        goto exit;
-                }
-
-                /* PM1B is optional */
-
-                status =
-                    acpi_hw_low_level_write(16, value, &acpi_gbl_xpm1b_enable);
-                break;
-
-        case ACPI_REGISTER_PM1_CONTROL: /* 16-bit access */
-
-                /*
-                 * Perform a read first to preserve certain bits (per ACPI spec)
-                 */
-                status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL,
-                                               &read_value);
-                if (ACPI_FAILURE(status)) {
-                        goto exit;
-                }
-
-                /* Insert the bits to be preserved */
-
-                ACPI_INSERT_BITS(value, ACPI_PM1_CONTROL_PRESERVED_BITS,
-                                 read_value);
-
-                /* Now we can write the data */
-
-                status =
-                    acpi_hw_low_level_write(16, value,
-                                            &acpi_gbl_FADT.xpm1a_control_block);
-                if (ACPI_FAILURE(status)) {
-                        goto exit;
-                }
-
-                status =
-                    acpi_hw_low_level_write(16, value,
-                                            &acpi_gbl_FADT.xpm1b_control_block);
-                break;
-
-        case ACPI_REGISTER_PM1A_CONTROL:        /* 16-bit access */
-
-                status =
-                    acpi_hw_low_level_write(16, value,
-                                            &acpi_gbl_FADT.xpm1a_control_block);
-                break;
-
-        case ACPI_REGISTER_PM1B_CONTROL:        /* 16-bit access */
-
-                status =
-                    acpi_hw_low_level_write(16, value,
-                                            &acpi_gbl_FADT.xpm1b_control_block);
-                break;
-
-        case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */
-
-                status =
-                    acpi_hw_low_level_write(8, value,
-                                            &acpi_gbl_FADT.xpm2_control_block);
-                break;
-
-        case ACPI_REGISTER_PM_TIMER:    /* 32-bit access */
-
-                status =
-                    acpi_hw_low_level_write(32, value,
-                                            &acpi_gbl_FADT.xpm_timer_block);
-                break;
-
-        case ACPI_REGISTER_SMI_COMMAND_BLOCK:   /* 8-bit access */
+        info->pathname =
+            ACPI_CAST_PTR(char, acpi_gbl_sleep_state_names[sleep_state]);
 
-                /* SMI_CMD is currently always in IO space */
+        /* Evaluate the namespace object containing the values for this state */
 
-                status =
-                    acpi_os_write_port(acpi_gbl_FADT.smi_command, value, 8);
-                break;
+        status = acpi_ns_evaluate(info);
+        if (ACPI_FAILURE(status)) {
+                ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+                                  "%s while evaluating SleepState [%s]\n",
+                                  acpi_format_exception(status),
+                                  info->pathname));
 
-        default:
-                status = AE_BAD_PARAMETER;
-                break;
+                goto cleanup;
         }
 
-      exit:
-        return_ACPI_STATUS(status);
-}
-
-/******************************************************************************
- *
- * FUNCTION:    acpi_hw_low_level_read
- *
- * PARAMETERS:  Width               - 8, 16, or 32
- *              Value               - Where the value is returned
- *              Reg                 - GAS register structure
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Read from either memory or IO space.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_hw_low_level_read(u32 width, u32 * value, struct acpi_generic_address *reg)
-{
-        u64 address;
-        acpi_status status;
-
-        ACPI_FUNCTION_NAME(hw_low_level_read);
+        /* Must have a return object */
 
-        /*
-         * Must have a valid pointer to a GAS structure, and
-         * a non-zero address within. However, don't return an error
-         * because the PM1A/B code must not fail if B isn't present.
-         */
-        if (!reg) {
-                return (AE_OK);
+        if (!info->return_object) {
+                ACPI_ERROR((AE_INFO, "No Sleep State object returned from [%s]",
+                            info->pathname));
+                status = AE_NOT_EXIST;
         }
 
-        /* Get a local copy of the address. Handles possible alignment issues */
+        /* It must be of type Package */
 
-        ACPI_MOVE_64_TO_64(&address, &reg->address);
-        if (!address) {
-                return (AE_OK);
+        else if (ACPI_GET_OBJECT_TYPE(info->return_object) != ACPI_TYPE_PACKAGE) {
+                ACPI_ERROR((AE_INFO,
+                            "Sleep State return object is not a Package"));
+                status = AE_AML_OPERAND_TYPE;
         }
-        *value = 0;
 
         /*
-         * Two address spaces supported: Memory or IO.
-         * PCI_Config is not supported here because the GAS struct is insufficient
+         * The package must have at least two elements. NOTE (March 2005): This
+         * goes against the current ACPI spec which defines this object as a
+         * package with one encoded DWORD element. However, existing practice
+         * by BIOS vendors seems to be to have 2 or more elements, at least
+         * one per sleep type (A/B).
          */
-        switch (reg->space_id) {
-        case ACPI_ADR_SPACE_SYSTEM_MEMORY:
-
-                status = acpi_os_read_memory((acpi_physical_address) address,
-                                             value, width);
-                break;
-
-        case ACPI_ADR_SPACE_SYSTEM_IO:
-
-                status =
-                    acpi_os_read_port((acpi_io_address) address, value, width);
-                break;
-
-        default:
+        else if (info->return_object->package.count < 2) {
                 ACPI_ERROR((AE_INFO,
-                            "Unsupported address space: %X", reg->space_id));
-                return (AE_BAD_PARAMETER);
+                            "Sleep State return package does not have at least two elements"));
+                status = AE_AML_NO_OPERAND;
         }
 
-        ACPI_DEBUG_PRINT((ACPI_DB_IO,
-                          "Read:  %8.8X width %2d from %8.8X%8.8X (%s)\n",
-                          *value, width, ACPI_FORMAT_UINT64(address),
-                          acpi_ut_get_region_name(reg->space_id)));
-
-        return (status);
-}
-
-/******************************************************************************
- *
- * FUNCTION:    acpi_hw_low_level_write
- *
- * PARAMETERS:  Width               - 8, 16, or 32
- *              Value               - To be written
- *              Reg                 - GAS register structure
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Write to either memory or IO space.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_hw_low_level_write(u32 width, u32 value, struct acpi_generic_address * reg)
-{
-        u64 address;
-        acpi_status status;
-
-        ACPI_FUNCTION_NAME(hw_low_level_write);
-
-        /*
-         * Must have a valid pointer to a GAS structure, and
-         * a non-zero address within. However, don't return an error
-         * because the PM1A/B code must not fail if B isn't present.
-         */
-        if (!reg) {
-                return (AE_OK);
-        }
+        /* The first two elements must both be of type Integer */
 
-        /* Get a local copy of the address. Handles possible alignment issues */
+        else if ((ACPI_GET_OBJECT_TYPE(info->return_object->package.elements[0])
+                  != ACPI_TYPE_INTEGER) ||
+                 (ACPI_GET_OBJECT_TYPE(info->return_object->package.elements[1])
+                  != ACPI_TYPE_INTEGER)) {
+                ACPI_ERROR((AE_INFO,
+                            "Sleep State return package elements are not both Integers (%s, %s)",
+                            acpi_ut_get_object_type_name(info->return_object->
+                                                         package.elements[0]),
+                            acpi_ut_get_object_type_name(info->return_object->
+                                                         package.elements[1])));
+                status = AE_AML_OPERAND_TYPE;
+        } else {
+                /* Valid _Sx_ package size, type, and value */
 
-        ACPI_MOVE_64_TO_64(&address, &reg->address);
-        if (!address) {
-                return (AE_OK);
+                *sleep_type_a = (u8)
+                    (info->return_object->package.elements[0])->integer.value;
+                *sleep_type_b = (u8)
+                    (info->return_object->package.elements[1])->integer.value;
         }
 
-        /*
-         * Two address spaces supported: Memory or IO.
-         * PCI_Config is not supported here because the GAS struct is insufficient
-         */
-        switch (reg->space_id) {
-        case ACPI_ADR_SPACE_SYSTEM_MEMORY:
-
-                status = acpi_os_write_memory((acpi_physical_address) address,
-                                              value, width);
-                break;
-
-        case ACPI_ADR_SPACE_SYSTEM_IO:
-
-                status = acpi_os_write_port((acpi_io_address) address, value,
-                                            width);
-                break;
-
-        default:
-                ACPI_ERROR((AE_INFO,
-                            "Unsupported address space: %X", reg->space_id));
-                return (AE_BAD_PARAMETER);
+        if (ACPI_FAILURE(status)) {
+                ACPI_EXCEPTION((AE_INFO, status,
+                                "While evaluating SleepState [%s], bad Sleep object %p type %s",
+                                info->pathname, info->return_object,
+                                acpi_ut_get_object_type_name(info->
+                                                             return_object)));
         }
 
-        ACPI_DEBUG_PRINT((ACPI_DB_IO,
-                          "Wrote: %8.8X width %2d   to %8.8X%8.8X (%s)\n",
-                          value, width, ACPI_FORMAT_UINT64(address),
-                          acpi_ut_get_region_name(reg->space_id)));
+        acpi_ut_remove_reference(info->return_object);
 
-        return (status);
+      cleanup:
+        ACPI_FREE(info);
+        return_ACPI_STATUS(status);
 }
+
+ACPI_EXPORT_SYMBOL(acpi_get_sleep_type_data)
diff --git a/drivers/acpi/namespace/nsaccess.c b/drivers/acpi/acpica/nsaccess.c
index c39a7f68b889..88303ebe924c 100644
--- a/drivers/acpi/namespace/nsaccess.c
+++ b/drivers/acpi/acpica/nsaccess.c
@@ -42,9 +42,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/amlcode.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acdispat.h>
+#include "accommon.h"
+#include "amlcode.h"
+#include "acnamesp.h"
+#include "acdispat.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsaccess")
@@ -165,12 +166,9 @@ acpi_status acpi_ns_root_initialize(void)
 
                                 obj_desc->method.method_flags =
                                     AML_METHOD_INTERNAL_ONLY;
-
-#ifndef ACPI_DUMP_APP
                                 obj_desc->method.implementation =
                                     acpi_ut_osi_implementation;
 #endif
-#endif
                                 break;
 
                         case ACPI_TYPE_INTEGER:
@@ -521,11 +519,11 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
         }
 
         /*
-         * Search namespace for each segment of the name.  Loop through and
+         * Search namespace for each segment of the name. Loop through and
          * verify (or add to the namespace) each name segment.
          *
          * The object type is significant only at the last name
-         * segment.  (We don't care about the types along the path, only
+         * segment. (We don't care about the types along the path, only
          * the type of the final target object.)
          */
         this_search_type = ACPI_TYPE_ANY;
@@ -591,6 +589,10 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
                          * segments).
                          */
                         if (this_node->type == ACPI_TYPE_LOCAL_ALIAS) {
+                                if (!this_node->object) {
+                                        return_ACPI_STATUS(AE_NOT_EXIST);
+                                }
+
                                 if (acpi_ns_opens_scope
                                     (((struct acpi_namespace_node *)this_node->
                                       object)->type)) {
diff --git a/drivers/acpi/namespace/nsalloc.c b/drivers/acpi/acpica/nsalloc.c
index 3a1740ac2edc..f976d848fe82 100644
--- a/drivers/acpi/namespace/nsalloc.c
+++ b/drivers/acpi/acpica/nsalloc.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsalloc")
diff --git a/drivers/acpi/namespace/nsdump.c b/drivers/acpi/acpica/nsdump.c
index cc0ae39440e4..0da33c8e9ba2 100644
--- a/drivers/acpi/namespace/nsdump.c
+++ b/drivers/acpi/acpica/nsdump.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsdump")
diff --git a/drivers/acpi/namespace/nsdumpdv.c b/drivers/acpi/acpica/nsdumpdv.c
index 428f50fde11a..41994fe7fbb8 100644
--- a/drivers/acpi/namespace/nsdumpdv.c
+++ b/drivers/acpi/acpica/nsdumpdv.c
@@ -42,6 +42,7 @@
  */
 
 #include <acpi/acpi.h>
+#include "accommon.h"
 
 /* TBD: This entire module is apparently obsolete and should be removed */
 
@@ -49,7 +50,7 @@
 ACPI_MODULE_NAME("nsdumpdv")
 #ifdef ACPI_OBSOLETE_FUNCTIONS
 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
-#include <acpi/acnamesp.h>
+#include "acnamesp.h"
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ns_dump_one_device
diff --git a/drivers/acpi/namespace/nseval.c b/drivers/acpi/acpica/nseval.c
index 4cdf03ac2b46..0f3d5f9b5966 100644
--- a/drivers/acpi/namespace/nseval.c
+++ b/drivers/acpi/acpica/nseval.c
@@ -42,9 +42,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/acinterp.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "acinterp.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nseval")
@@ -89,6 +90,7 @@ acpi_status acpi_ns_evaluate(struct acpi_evaluate_info * info)
         /* Initialize the return value to an invalid object */
 
         info->return_object = NULL;
+        info->param_count = 0;
 
         /*
          * Get the actual namespace node for the target object. Handles these cases:
@@ -141,41 +143,17 @@ acpi_status acpi_ns_evaluate(struct acpi_evaluate_info * info)
                         return_ACPI_STATUS(AE_NULL_OBJECT);
                 }
 
-                /*
-                 * Calculate the number of arguments being passed to the method
-                 */
+                /* Count the number of arguments being passed to the method */
 
-                info->param_count = 0;
                 if (info->parameters) {
-                        while (info->parameters[info->param_count])
+                        while (info->parameters[info->param_count]) {
+                                if (info->param_count > ACPI_METHOD_MAX_ARG) {
+                                        return_ACPI_STATUS(AE_LIMIT);
+                                }
                                 info->param_count++;
+                        }
                 }
 
-                /*
-                 * Warning if too few or too many arguments have been passed by the
-                 * caller. We don't want to abort here with an error because an
-                 * incorrect number of arguments may not cause the method to fail.
-                 * However, the method will fail if there are too few arguments passed
-                 * and the method attempts to use one of the missing ones.
-                 */
-
-                if (info->param_count < info->obj_desc->method.param_count) {
-                        ACPI_WARNING((AE_INFO,
-                                    "Insufficient arguments - "
-                                    "method [%4.4s] needs %d, found %d",
-                                    acpi_ut_get_node_name(info->resolved_node),
-                                    info->obj_desc->method.param_count,
-                                    info->param_count));
-                } else if (info->param_count >
-                                info->obj_desc->method.param_count) {
-                        ACPI_WARNING((AE_INFO,
-                                      "Excess arguments - "
-                                      "method [%4.4s] needs %d, found %d",
-                                      acpi_ut_get_node_name(info->
-                                                            resolved_node),
-                                      info->obj_desc->method.param_count,
-                                      info->param_count));
-                }
 
                 ACPI_DUMP_PATHNAME(info->resolved_node, "Execute Method:",
                                    ACPI_LV_INFO, _COMPONENT);
@@ -264,32 +242,13 @@ acpi_status acpi_ns_evaluate(struct acpi_evaluate_info * info)
                 }
         }
 
-        /* Validation of return values for ACPI-predefined methods and objects */
-
-        if ((status == AE_OK) || (status == AE_CTRL_RETURN_VALUE)) {
-                /*
-                 * If this is the first evaluation, check the return value. This
-                 * ensures that any warnings will only be emitted during the very
-                 * first evaluation of the object.
-                 */
-                if (!(node->flags & ANOBJ_EVALUATED)) {
-                        /*
-                         * Check for a predefined ACPI name. If found, validate the
-                         * returned object.
-                         *
-                         * Note: Ignore return status for now, emit warnings if there are
-                         * problems with the returned object. May change later to abort
-                         * the method on invalid return object.
-                         */
-                        (void)acpi_ns_check_predefined_names(node,
-                                                             info->
-                                                             return_object);
-                }
-
-                /* Mark the node as having been evaluated */
-
-                node->flags |= ANOBJ_EVALUATED;
-        }
+        /*
+         * Check input argument count against the ASL-defined count for a method.
+         * Also check predefined names: argument count and return value against
+         * the ACPI specification. Some incorrect return value types are repaired.
+         */
+        (void)acpi_ns_check_predefined_names(node, info->param_count,
+                status, &info->return_object);
 
         /* Check if there is a return value that must be dealt with */
 
diff --git a/drivers/acpi/namespace/nsinit.c b/drivers/acpi/acpica/nsinit.c
index e4c57510d798..13501cb81863 100644
--- a/drivers/acpi/namespace/nsinit.c
+++ b/drivers/acpi/acpica/nsinit.c
@@ -42,9 +42,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acdispat.h"
+#include "acinterp.h"
 #include <linux/nmi.h>
 
 #define _COMPONENT          ACPI_NAMESPACE
diff --git a/drivers/acpi/namespace/nsload.c b/drivers/acpi/acpica/nsload.c
index a4a412b7c029..a0ba9e12379e 100644
--- a/drivers/acpi/namespace/nsload.c
+++ b/drivers/acpi/acpica/nsload.c
@@ -42,9 +42,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acdispat.h>
-#include <acpi/actables.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acdispat.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsload")
diff --git a/drivers/acpi/namespace/nsnames.c b/drivers/acpi/acpica/nsnames.c
index 42a39a7c96e9..ae3dc10a7e81 100644
--- a/drivers/acpi/namespace/nsnames.c
+++ b/drivers/acpi/acpica/nsnames.c
@@ -42,8 +42,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/amlcode.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "amlcode.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsnames")
diff --git a/drivers/acpi/namespace/nsobject.c b/drivers/acpi/acpica/nsobject.c
index 15fe09e24f71..08a97a57f8f9 100644
--- a/drivers/acpi/namespace/nsobject.c
+++ b/drivers/acpi/acpica/nsobject.c
@@ -43,7 +43,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsobject")
diff --git a/drivers/acpi/namespace/nsparse.c b/drivers/acpi/acpica/nsparse.c
index a82271a9dbb3..b9e8d0070b6f 100644
--- a/drivers/acpi/namespace/nsparse.c
+++ b/drivers/acpi/acpica/nsparse.c
@@ -42,10 +42,11 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acparser.h>
-#include <acpi/acdispat.h>
-#include <acpi/actables.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acparser.h"
+#include "acdispat.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsparse")
diff --git a/drivers/acpi/namespace/nspredef.c b/drivers/acpi/acpica/nspredef.c
index 0f17cf0898c9..452703290d35 100644
--- a/drivers/acpi/namespace/nspredef.c
+++ b/drivers/acpi/acpica/nspredef.c
@@ -43,8 +43,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acpredef.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acpredef.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nspredef")
@@ -72,7 +73,7 @@ ACPI_MODULE_NAME("nspredef")
 /* Local prototypes */
 static acpi_status
 acpi_ns_check_package(char *pathname,
-                      union acpi_operand_object *return_object,
+                      union acpi_operand_object **return_object_ptr,
                       const union acpi_predefined_info *predefined);
 
 static acpi_status
@@ -82,13 +83,18 @@ acpi_ns_check_package_elements(char *pathname,
 
 static acpi_status
 acpi_ns_check_object_type(char *pathname,
-                          union acpi_operand_object *return_object,
+                          union acpi_operand_object **return_object_ptr,
                           u32 expected_btypes, u32 package_index);
 
 static acpi_status
 acpi_ns_check_reference(char *pathname,
                         union acpi_operand_object *return_object);
 
+static acpi_status
+acpi_ns_repair_object(u32 expected_btypes,
+                      u32 package_index,
+                      union acpi_operand_object **return_object_ptr);
+
 /*
  * Names for the types that can be returned by the predefined objects.
  * Used for warning messages. Must be in the same order as the ACPI_RTYPEs
@@ -108,8 +114,8 @@ static const char *acpi_rtype_names[] = {
  * FUNCTION:    acpi_ns_check_predefined_names
  *
  * PARAMETERS:  Node            - Namespace node for the method/object
- *              return_object   - Object returned from the evaluation of this
- *                                method/object
+ *              return_object_ptr - Pointer to the object returned from the
+ *                                evaluation of a method or object
  *
  * RETURN:      Status
  *
@@ -119,8 +125,11 @@ static const char *acpi_rtype_names[] = {
 
 acpi_status
 acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
-                               union acpi_operand_object *return_object)
+                               u32 user_param_count,
+                               acpi_status return_status,
+                               union acpi_operand_object **return_object_ptr)
 {
+        union acpi_operand_object *return_object = *return_object_ptr;
         acpi_status status = AE_OK;
         const union acpi_predefined_info *predefined;
         char *pathname;
@@ -128,12 +137,6 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
         /* Match the name for this method/object against the predefined list */
 
         predefined = acpi_ns_check_for_predefined_name(node);
-        if (!predefined) {
-
-                /* Name was not one of the predefined names */
-
-                return (AE_OK);
-        }
 
         /* Get the full pathname to the object, for use in error messages */
 
@@ -143,10 +146,37 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
         }
 
         /*
-         * Check that the parameter count for this method is in accordance
-         * with the ACPI specification.
+         * Check that the parameter count for this method matches the ASL
+         * definition. For predefined names, ensure that both the caller and
+         * the method itself are in accordance with the ACPI specification.
          */
-        acpi_ns_check_parameter_count(pathname, node, predefined);
+        acpi_ns_check_parameter_count(pathname, node, user_param_count,
+                                      predefined);
+
+        /* If not a predefined name, we cannot validate the return object */
+
+        if (!predefined) {
+                goto exit;
+        }
+
+        /* If the method failed, we cannot validate the return object */
+
+        if ((return_status != AE_OK) && (return_status != AE_CTRL_RETURN_VALUE)) {
+                goto exit;
+        }
+
+        /*
+         * Only validate the return value on the first successful evaluation of
+         * the method. This ensures that any warnings will only be emitted during
+         * the very first evaluation of the method/object.
+         */
+        if (node->flags & ANOBJ_EVALUATED) {
+                goto exit;
+        }
+
+        /* Mark the node as having been successfully evaluated */
+
+        node->flags |= ANOBJ_EVALUATED;
 
         /*
          * If there is no return value, check if we require a return value for
@@ -171,7 +201,7 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
          * We have a return value, but if one wasn't expected, just exit, this is
          * not a problem
          *
-         * For example, if "Implicit return value" is enabled, methods will
+         * For example, if the "Implicit Return" feature is enabled, methods will
          * always return a value
          */
         if (!predefined->info.expected_btypes) {
@@ -182,7 +212,7 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
          * Check that the type of the return object is what is expected for
          * this predefined name
          */
-        status = acpi_ns_check_object_type(pathname, return_object,
+        status = acpi_ns_check_object_type(pathname, return_object_ptr,
                                            predefined->info.expected_btypes,
                                            ACPI_NOT_PACKAGE);
         if (ACPI_FAILURE(status)) {
@@ -193,11 +223,12 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
 
         if (ACPI_GET_OBJECT_TYPE(return_object) == ACPI_TYPE_PACKAGE) {
                 status =
-                    acpi_ns_check_package(pathname, return_object, predefined);
+                    acpi_ns_check_package(pathname, return_object_ptr,
+                                          predefined);
         }
 
       exit:
-        if (pathname) {
+        if (pathname != predefined->info.name) {
                 ACPI_FREE(pathname);
         }
 
@@ -210,6 +241,7 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
  *
  * PARAMETERS:  Pathname        - Full pathname to the node (for error msgs)
  *              Node            - Namespace node for the method/object
+ *              user_param_count - Number of args passed in by the caller
  *              Predefined      - Pointer to entry in predefined name table
  *
  * RETURN:      None
@@ -223,32 +255,76 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
 void
 acpi_ns_check_parameter_count(char *pathname,
                               struct acpi_namespace_node *node,
+                              u32 user_param_count,
                               const union acpi_predefined_info *predefined)
 {
         u32 param_count;
         u32 required_params_current;
         u32 required_params_old;
 
-        /*
-         * Check that the ASL-defined parameter count is what is expected for
-         * this predefined name.
-         *
-         * Methods have 0-7 parameters. All other types have zero.
-         */
+        /* Methods have 0-7 parameters. All other types have zero. */
+
         param_count = 0;
         if (node->type == ACPI_TYPE_METHOD) {
                 param_count = node->object->method.param_count;
         }
 
-        /* Validate parameter count - allow two different legal counts (_SCP) */
+        /* Argument count check for non-predefined methods/objects */
+
+        if (!predefined) {
+                /*
+                 * Warning if too few or too many arguments have been passed by the
+                 * caller. An incorrect number of arguments may not cause the method
+                 * to fail. However, the method will fail if there are too few
+                 * arguments and the method attempts to use one of the missing ones.
+                 */
+                if (user_param_count < param_count) {
+                        ACPI_WARNING((AE_INFO,
+                                      "%s: Insufficient arguments - needs %d, found %d",
+                                      pathname, param_count, user_param_count));
+                } else if (user_param_count > param_count) {
+                        ACPI_WARNING((AE_INFO,
+                                      "%s: Excess arguments - needs %d, found %d",
+                                      pathname, param_count, user_param_count));
+                }
+                return;
+        }
+
+        /* Allow two different legal argument counts (_SCP, etc.) */
 
         required_params_current = predefined->info.param_count & 0x0F;
         required_params_old = predefined->info.param_count >> 4;
 
+        if (user_param_count != ACPI_UINT32_MAX) {
+
+                /* Validate the user-supplied parameter count */
+
+                if ((user_param_count != required_params_current) &&
+                    (user_param_count != required_params_old)) {
+                        ACPI_WARNING((AE_INFO,
+                                      "%s: Parameter count mismatch - caller passed %d, ACPI requires %d",
+                                      pathname, user_param_count,
+                                      required_params_current));
+                }
+        }
+
+        /*
+         * Only validate the argument count on the first successful evaluation of
+         * the method. This ensures that any warnings will only be emitted during
+         * the very first evaluation of the method/object.
+         */
+        if (node->flags & ANOBJ_EVALUATED) {
+                return;
+        }
+
+        /*
+         * Check that the ASL-defined parameter count is what is expected for
+         * this predefined name.
+         */
         if ((param_count != required_params_current) &&
             (param_count != required_params_old)) {
                 ACPI_WARNING((AE_INFO,
-                              "%s: Parameter count mismatch - ASL declared %d, expected %d",
+                              "%s: Parameter count mismatch - ASL declared %d, ACPI requires %d",
                               pathname, param_count, required_params_current));
         }
 }
@@ -307,8 +383,8 @@ const union acpi_predefined_info *acpi_ns_check_for_predefined_name(struct
  * FUNCTION:    acpi_ns_check_package
  *
  * PARAMETERS:  Pathname        - Full pathname to the node (for error msgs)
- *              return_object   - Object returned from the evaluation of a
- *                                method or object
+ *              return_object_ptr - Pointer to the object returned from the
+ *                                evaluation of a method or object
  *              Predefined      - Pointer to entry in predefined name table
  *
  * RETURN:      Status
@@ -320,9 +396,10 @@ const union acpi_predefined_info *acpi_ns_check_for_predefined_name(struct
 
 static acpi_status
 acpi_ns_check_package(char *pathname,
-                      union acpi_operand_object *return_object,
+                      union acpi_operand_object **return_object_ptr,
                       const union acpi_predefined_info *predefined)
 {
+        union acpi_operand_object *return_object = *return_object_ptr;
         const union acpi_predefined_info *package;
         union acpi_operand_object *sub_package;
         union acpi_operand_object **elements;
@@ -408,7 +485,7 @@ acpi_ns_check_package(char *pathname,
                  * elements must be of the same type
                  */
                 for (i = 0; i < count; i++) {
-                        status = acpi_ns_check_object_type(pathname, *elements,
+                        status = acpi_ns_check_object_type(pathname, elements,
                                                            package->ret_info.
                                                            object_type1, i);
                         if (ACPI_FAILURE(status)) {
@@ -441,7 +518,7 @@ acpi_ns_check_package(char *pathname,
 
                                 status =
                                     acpi_ns_check_object_type(pathname,
-                                                              *elements,
+                                                              elements,
                                                               package->
                                                               ret_info3.
                                                               object_type[i],
@@ -454,7 +531,7 @@ acpi_ns_check_package(char *pathname,
 
                                 status =
                                     acpi_ns_check_object_type(pathname,
-                                                              *elements,
+                                                              elements,
                                                               package->
                                                               ret_info3.
                                                               tail_object_type,
@@ -471,7 +548,7 @@ acpi_ns_check_package(char *pathname,
 
                 /* First element is the (Integer) count of sub-packages to follow */
 
-                status = acpi_ns_check_object_type(pathname, *elements,
+                status = acpi_ns_check_object_type(pathname, elements,
                                                    ACPI_RTYPE_INTEGER, 0);
                 if (ACPI_FAILURE(status)) {
                         return (status);
@@ -509,7 +586,7 @@ acpi_ns_check_package(char *pathname,
                         /* Each sub-object must be of type Package */
 
                         status =
-                            acpi_ns_check_object_type(pathname, sub_package,
+                            acpi_ns_check_object_type(pathname, &sub_package,
                                                       ACPI_RTYPE_PACKAGE, i);
                         if (ACPI_FAILURE(status)) {
                                 return (status);
@@ -567,12 +644,8 @@ acpi_ns_check_package(char *pathname,
                                 for (j = 0; j < expected_count; j++) {
                                         status =
                                             acpi_ns_check_object_type(pathname,
-                                                                      sub_elements
-                                                                      [j],
-                                                                      package->
-                                                                      ret_info2.
-                                                                      object_type
-                                                                      [j], j);
+                                                &sub_elements[j],
+                                                package->ret_info2.object_type[j], j);
                                         if (ACPI_FAILURE(status)) {
                                                 return (status);
                                         }
@@ -611,7 +684,7 @@ acpi_ns_check_package(char *pathname,
 
                                 status =
                                     acpi_ns_check_object_type(pathname,
-                                                              *sub_elements,
+                                                              sub_elements,
                                                               ACPI_RTYPE_INTEGER,
                                                               0);
                                 if (ACPI_FAILURE(status)) {
@@ -708,7 +781,7 @@ acpi_ns_check_package_elements(char *pathname,
          * The second group can have a count of zero.
          */
         for (i = 0; i < count1; i++) {
-                status = acpi_ns_check_object_type(pathname, *this_element,
+                status = acpi_ns_check_object_type(pathname, this_element,
                                                    type1, i);
                 if (ACPI_FAILURE(status)) {
                         return (status);
@@ -717,7 +790,7 @@ acpi_ns_check_package_elements(char *pathname,
         }
 
         for (i = 0; i < count2; i++) {
-                status = acpi_ns_check_object_type(pathname, *this_element,
+                status = acpi_ns_check_object_type(pathname, this_element,
                                                    type2, (i + count1));
                 if (ACPI_FAILURE(status)) {
                         return (status);
@@ -733,8 +806,8 @@ acpi_ns_check_package_elements(char *pathname,
  * FUNCTION:    acpi_ns_check_object_type
  *
  * PARAMETERS:  Pathname        - Full pathname to the node (for error msgs)
- *              return_object   - Object return from the execution of this
- *                                method/object
+ *              return_object_ptr - Pointer to the object returned from the
+ *                                evaluation of a method or object
  *              expected_btypes - Bitmap of expected return type(s)
  *              package_index   - Index of object within parent package (if
  *                                applicable - ACPI_NOT_PACKAGE otherwise)
@@ -748,9 +821,10 @@ acpi_ns_check_package_elements(char *pathname,
 
 static acpi_status
 acpi_ns_check_object_type(char *pathname,
-                          union acpi_operand_object *return_object,
+                          union acpi_operand_object **return_object_ptr,
                           u32 expected_btypes, u32 package_index)
 {
+        union acpi_operand_object *return_object = *return_object_ptr;
         acpi_status status = AE_OK;
         u32 return_btype;
         char type_buffer[48];   /* Room for 5 types */
@@ -814,6 +888,14 @@ acpi_ns_check_object_type(char *pathname,
         /* Is the object one of the expected types? */
 
         if (!(return_btype & expected_btypes)) {
+
+                /* Type mismatch -- attempt repair of the returned object */
+
+                status = acpi_ns_repair_object(expected_btypes, package_index,
+                                               return_object_ptr);
+                if (ACPI_SUCCESS(status)) {
+                        return (status);
+                }
                 goto type_error_exit;
         }
 
@@ -898,3 +980,86 @@ acpi_ns_check_reference(char *pathname,
 
         return (AE_AML_OPERAND_TYPE);
 }
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_repair_object
+ *
+ * PARAMETERS:  Pathname        - Full pathname to the node (for error msgs)
+ *              package_index   - Used to determine if target is in a package
+ *              return_object_ptr - Pointer to the object returned from the
+ *                                evaluation of a method or object
+ *
+ * RETURN:      Status. AE_OK if repair was successful.
+ *
+ * DESCRIPTION: Attempt to repair/convert a return object of a type that was
+ *              not expected.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ns_repair_object(u32 expected_btypes,
+                      u32 package_index,
+                      union acpi_operand_object **return_object_ptr)
+{
+        union acpi_operand_object *return_object = *return_object_ptr;
+        union acpi_operand_object *new_object;
+        acpi_size length;
+
+        switch (ACPI_GET_OBJECT_TYPE(return_object)) {
+        case ACPI_TYPE_BUFFER:
+
+                if (!(expected_btypes & ACPI_RTYPE_STRING)) {
+                        return (AE_AML_OPERAND_TYPE);
+                }
+
+                /*
+                 * Have a Buffer, expected a String, convert. Use a to_string
+                 * conversion, no transform performed on the buffer data. The best
+                 * example of this is the _BIF method, where the string data from
+                 * the battery is often (incorrectly) returned as buffer object(s).
+                 */
+                length = 0;
+                while ((length < return_object->buffer.length) &&
+                       (return_object->buffer.pointer[length])) {
+                        length++;
+                }
+
+                /* Allocate a new string object */
+
+                new_object = acpi_ut_create_string_object(length);
+                if (!new_object) {
+                        return (AE_NO_MEMORY);
+                }
+
+                /*
+                 * Copy the raw buffer data with no transform. String is already NULL
+                 * terminated at Length+1.
+                 */
+                ACPI_MEMCPY(new_object->string.pointer,
+                            return_object->buffer.pointer, length);
+
+                /* Install the new return object */
+
+                acpi_ut_remove_reference(return_object);
+                *return_object_ptr = new_object;
+
+                /*
+                 * If the object is a package element, we need to:
+                 * 1. Decrement the reference count of the orignal object, it was
+                 *    incremented when building the package
+                 * 2. Increment the reference count of the new object, it will be
+                 *    decremented when releasing the package
+                 */
+                if (package_index != ACPI_NOT_PACKAGE) {
+                        acpi_ut_remove_reference(return_object);
+                        acpi_ut_add_reference(new_object);
+                }
+                return (AE_OK);
+
+        default:
+                break;
+        }
+
+        return (AE_AML_OPERAND_TYPE);
+}
diff --git a/drivers/acpi/namespace/nssearch.c b/drivers/acpi/acpica/nssearch.c
index a9a80bf811b3..6fea13f3f52d 100644
--- a/drivers/acpi/namespace/nssearch.c
+++ b/drivers/acpi/acpica/nssearch.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nssearch")
diff --git a/drivers/acpi/namespace/nsutils.c b/drivers/acpi/acpica/nsutils.c
index b0817e1127b1..3e1149bf4aa5 100644
--- a/drivers/acpi/namespace/nsutils.c
+++ b/drivers/acpi/acpica/nsutils.c
@@ -43,9 +43,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/amlcode.h>
-#include <acpi/actables.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "amlcode.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsutils")
@@ -314,9 +315,15 @@ void acpi_ns_get_internal_name_length(struct acpi_namestring_info *info)
          *
          * strlen() + 1 covers the first name_seg, which has no path separator
          */
-        if (acpi_ns_valid_root_prefix(next_external_char[0])) {
+        if (acpi_ns_valid_root_prefix(*next_external_char)) {
                 info->fully_qualified = TRUE;
                 next_external_char++;
+
+                /* Skip redundant root_prefix, like \\_SB.PCI0.SBRG.EC0 */
+
+                while (acpi_ns_valid_root_prefix(*next_external_char)) {
+                        next_external_char++;
+                }
         } else {
                 /*
                  * Handle Carat prefixes
diff --git a/drivers/acpi/namespace/nswalk.c b/drivers/acpi/acpica/nswalk.c
index 3c905ce26d7d..200895fa2728 100644
--- a/drivers/acpi/namespace/nswalk.c
+++ b/drivers/acpi/acpica/nswalk.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nswalk")
diff --git a/drivers/acpi/namespace/nsxfeval.c b/drivers/acpi/acpica/nsxfeval.c
index a085cc39c055..22a7171ac1ed 100644
--- a/drivers/acpi/namespace/nsxfeval.c
+++ b/drivers/acpi/acpica/nsxfeval.c
@@ -43,8 +43,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acinterp.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsxfeval")
diff --git a/drivers/acpi/namespace/nsxfname.c b/drivers/acpi/acpica/nsxfname.c
index 5efa4e7ddb0b..9589fea24997 100644
--- a/drivers/acpi/namespace/nsxfname.c
+++ b/drivers/acpi/acpica/nsxfname.c
@@ -43,7 +43,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsxfname")
diff --git a/drivers/acpi/namespace/nsxfobj.c b/drivers/acpi/acpica/nsxfobj.c
index 2b375ee80cef..1c7efc15225f 100644
--- a/drivers/acpi/namespace/nsxfobj.c
+++ b/drivers/acpi/acpica/nsxfobj.c
@@ -43,7 +43,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsxfobj")
diff --git a/drivers/acpi/parser/psargs.c b/drivers/acpi/acpica/psargs.c
index d830b29b85b1..b161f3544b51 100644
--- a/drivers/acpi/parser/psargs.c
+++ b/drivers/acpi/acpica/psargs.c
@@ -42,10 +42,11 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/amlcode.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acdispat.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "amlcode.h"
+#include "acnamesp.h"
+#include "acdispat.h"
 
 #define _COMPONENT          ACPI_PARSER
 ACPI_MODULE_NAME("psargs")
diff --git a/drivers/acpi/parser/psloop.c b/drivers/acpi/acpica/psloop.c
index 4647039a0d8a..c5f6ce19a401 100644
--- a/drivers/acpi/parser/psloop.c
+++ b/drivers/acpi/acpica/psloop.c
@@ -50,9 +50,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/acdispat.h>
-#include <acpi/amlcode.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "acdispat.h"
+#include "amlcode.h"
 
 #define _COMPONENT          ACPI_PARSER
 ACPI_MODULE_NAME("psloop")
diff --git a/drivers/acpi/parser/psopcode.c b/drivers/acpi/acpica/psopcode.c
index f425ab30eae8..3bc3a60194d6 100644
--- a/drivers/acpi/parser/psopcode.c
+++ b/drivers/acpi/acpica/psopcode.c
@@ -42,9 +42,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/acopcode.h>
-#include <acpi/amlcode.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "acopcode.h"
+#include "amlcode.h"
 
 #define _COMPONENT          ACPI_PARSER
 ACPI_MODULE_NAME("psopcode")
diff --git a/drivers/acpi/parser/psparse.c b/drivers/acpi/acpica/psparse.c
index 68e932f215ea..70838e9b608c 100644
--- a/drivers/acpi/parser/psparse.c
+++ b/drivers/acpi/acpica/psparse.c
@@ -51,11 +51,12 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/acdispat.h>
-#include <acpi/amlcode.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acinterp.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "acdispat.h"
+#include "amlcode.h"
+#include "acnamesp.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_PARSER
 ACPI_MODULE_NAME("psparse")
@@ -447,10 +448,22 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
                           walk_state, walk_state->parser_state.aml,
                           walk_state->parser_state.aml_size));
 
+        if (!walk_state->parser_state.aml) {
+                return_ACPI_STATUS(AE_NULL_OBJECT);
+        }
+
         /* Create and initialize a new thread state */
 
         thread = acpi_ut_create_thread_state();
         if (!thread) {
+                if (walk_state->method_desc) {
+
+                        /* Executing a control method - additional cleanup */
+
+                        acpi_ds_terminate_control_method(
+                                walk_state->method_desc, walk_state);
+                }
+
                 acpi_ds_delete_walk_state(walk_state);
                 return_ACPI_STATUS(AE_NO_MEMORY);
         }
diff --git a/drivers/acpi/parser/psscope.c b/drivers/acpi/acpica/psscope.c
index ee50e67c9443..2feca5ca9581 100644
--- a/drivers/acpi/parser/psscope.c
+++ b/drivers/acpi/acpica/psscope.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
+#include "accommon.h"
+#include "acparser.h"
 
 #define _COMPONENT          ACPI_PARSER
 ACPI_MODULE_NAME("psscope")
diff --git a/drivers/acpi/parser/pstree.c b/drivers/acpi/acpica/pstree.c
index 1dd355ddd182..4d3389118ec3 100644
--- a/drivers/acpi/parser/pstree.c
+++ b/drivers/acpi/acpica/pstree.c
@@ -42,8 +42,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/amlcode.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "amlcode.h"
 
 #define _COMPONENT          ACPI_PARSER
 ACPI_MODULE_NAME("pstree")
diff --git a/drivers/acpi/parser/psutils.c b/drivers/acpi/acpica/psutils.c
index 7cf1f65cd5bb..e636e078ad3d 100644
--- a/drivers/acpi/parser/psutils.c
+++ b/drivers/acpi/acpica/psutils.c
@@ -42,8 +42,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/amlcode.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "amlcode.h"
 
 #define _COMPONENT          ACPI_PARSER
 ACPI_MODULE_NAME("psutils")
diff --git a/drivers/acpi/parser/pswalk.c b/drivers/acpi/acpica/pswalk.c
index 8b86ad5a3201..78b8b791f2ae 100644
--- a/drivers/acpi/parser/pswalk.c
+++ b/drivers/acpi/acpica/pswalk.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
+#include "accommon.h"
+#include "acparser.h"
 
 #define _COMPONENT          ACPI_PARSER
 ACPI_MODULE_NAME("pswalk")
diff --git a/drivers/acpi/parser/psxface.c b/drivers/acpi/acpica/psxface.c
index 270469aae842..ff06032c0f06 100644
--- a/drivers/acpi/parser/psxface.c
+++ b/drivers/acpi/acpica/psxface.c
@@ -42,9 +42,11 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acparser.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "amlcode.h"
 
 #define _COMPONENT          ACPI_PARSER
 ACPI_MODULE_NAME("psxface")
@@ -278,6 +280,38 @@ acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info)
                 goto cleanup;
         }
 
+        /* Invoke an internal method if necessary */
+
+        if (info->obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) {
+                status = info->obj_desc->method.implementation(walk_state);
+                info->return_object = walk_state->return_desc;
+
+                /* Cleanup states */
+
+                acpi_ds_scope_stack_clear(walk_state);
+                acpi_ps_cleanup_scope(&walk_state->parser_state);
+                acpi_ds_terminate_control_method(walk_state->method_desc,
+                                                 walk_state);
+                acpi_ds_delete_walk_state(walk_state);
+                goto cleanup;
+        }
+
+        /*
+         * Start method evaluation with an implicit return of zero.
+         * This is done for Windows compatibility.
+         */
+        if (acpi_gbl_enable_interpreter_slack) {
+                walk_state->implicit_return_obj =
+                    acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
+                if (!walk_state->implicit_return_obj) {
+                        status = AE_NO_MEMORY;
+                        acpi_ds_delete_walk_state(walk_state);
+                        goto cleanup;
+                }
+
+                walk_state->implicit_return_obj->integer.value = 0;
+        }
+
         /* Parse the AML */
 
         status = acpi_ps_parse_aml(walk_state);
diff --git a/drivers/acpi/resources/rsaddr.c b/drivers/acpi/acpica/rsaddr.c
index 7f96332822bf..1e437bfd8db5 100644
--- a/drivers/acpi/resources/rsaddr.c
+++ b/drivers/acpi/acpica/rsaddr.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acresrc.h>
+#include "accommon.h"
+#include "acresrc.h"
 
 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rsaddr")
diff --git a/drivers/acpi/resources/rscalc.c b/drivers/acpi/acpica/rscalc.c
index 8eaaecf92009..52865ee6bc77 100644
--- a/drivers/acpi/resources/rscalc.c
+++ b/drivers/acpi/acpica/rscalc.c
@@ -42,8 +42,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acresrc.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acresrc.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rscalc")
diff --git a/drivers/acpi/resources/rscreate.c b/drivers/acpi/acpica/rscreate.c
index 08b8d73e6ee5..61566b1a0616 100644
--- a/drivers/acpi/resources/rscreate.c
+++ b/drivers/acpi/acpica/rscreate.c
@@ -42,8 +42,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acresrc.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acresrc.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rscreate")
diff --git a/drivers/acpi/resources/rsdump.c b/drivers/acpi/acpica/rsdump.c
index 6bbbb7b8941a..3f0ca5a12d34 100644
--- a/drivers/acpi/resources/rsdump.c
+++ b/drivers/acpi/acpica/rsdump.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acresrc.h>
+#include "accommon.h"
+#include "acresrc.h"
 
 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rsdump")
diff --git a/drivers/acpi/resources/rsinfo.c b/drivers/acpi/acpica/rsinfo.c
index 3f0a1fedbe0e..77b25fdb459c 100644
--- a/drivers/acpi/resources/rsinfo.c
+++ b/drivers/acpi/acpica/rsinfo.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acresrc.h>
+#include "accommon.h"
+#include "acresrc.h"
 
 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rsinfo")
diff --git a/drivers/acpi/resources/rsio.c b/drivers/acpi/acpica/rsio.c
index b66d42e7402e..35a49aa95609 100644
--- a/drivers/acpi/resources/rsio.c
+++ b/drivers/acpi/acpica/rsio.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acresrc.h>
+#include "accommon.h"
+#include "acresrc.h"
 
 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rsio")
diff --git a/drivers/acpi/resources/rsirq.c b/drivers/acpi/acpica/rsirq.c
index a8805efc0366..2e0256983aa6 100644
--- a/drivers/acpi/resources/rsirq.c
+++ b/drivers/acpi/acpica/rsirq.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acresrc.h>
+#include "accommon.h"
+#include "acresrc.h"
 
 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rsirq")
diff --git a/drivers/acpi/resources/rslist.c b/drivers/acpi/acpica/rslist.c
index b78c7e797a19..1b1dbc69f087 100644
--- a/drivers/acpi/resources/rslist.c
+++ b/drivers/acpi/acpica/rslist.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acresrc.h>
+#include "accommon.h"
+#include "acresrc.h"
 
 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rslist")
diff --git a/drivers/acpi/resources/rsmemory.c b/drivers/acpi/acpica/rsmemory.c
index 63b21abd90bb..ddc76cebdc92 100644
--- a/drivers/acpi/resources/rsmemory.c
+++ b/drivers/acpi/acpica/rsmemory.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acresrc.h>
+#include "accommon.h"
+#include "acresrc.h"
 
 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rsmemory")
diff --git a/drivers/acpi/resources/rsmisc.c b/drivers/acpi/acpica/rsmisc.c
index 96a6c0353255..5bc49a553284 100644
--- a/drivers/acpi/resources/rsmisc.c
+++ b/drivers/acpi/acpica/rsmisc.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acresrc.h>
+#include "accommon.h"
+#include "acresrc.h"
 
 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rsmisc")
diff --git a/drivers/acpi/resources/rsutils.c b/drivers/acpi/acpica/rsutils.c
index f7b3bcd59ba7..bc03d5966829 100644
--- a/drivers/acpi/resources/rsutils.c
+++ b/drivers/acpi/acpica/rsutils.c
@@ -42,8 +42,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acresrc.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acresrc.h"
 
 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rsutils")
diff --git a/drivers/acpi/resources/rsxface.c b/drivers/acpi/acpica/rsxface.c
index f59f4c4e034c..69a2aa5b5d83 100644
--- a/drivers/acpi/resources/rsxface.c
+++ b/drivers/acpi/acpica/rsxface.c
@@ -42,8 +42,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acresrc.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acresrc.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_RESOURCES
 ACPI_MODULE_NAME("rsxface")
diff --git a/drivers/acpi/tables/tbfadt.c b/drivers/acpi/acpica/tbfadt.c
index 2817158fb6a1..3636e4f8fb73 100644
--- a/drivers/acpi/tables/tbfadt.c
+++ b/drivers/acpi/acpica/tbfadt.c
@@ -42,15 +42,16 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/actables.h>
+#include "accommon.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_TABLES
 ACPI_MODULE_NAME("tbfadt")
 
 /* Local prototypes */
-static void inline
+static inline void
 acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,
-                             u8 byte_width, u64 address);
+                             u8 space_id, u8 byte_width, u64 address);
 
 static void acpi_tb_convert_fadt(void);
 
@@ -60,9 +61,10 @@ static void acpi_tb_validate_fadt(void);
 
 typedef struct acpi_fadt_info {
         char *name;
-        u8 target;
-        u8 source;
+        u8 address64;
+        u8 address32;
         u8 length;
+        u8 default_length;
         u8 type;
 
 } acpi_fadt_info;
@@ -71,37 +73,61 @@ typedef struct acpi_fadt_info {
 #define ACPI_FADT_SEPARATE_LENGTH   2
 
 static struct acpi_fadt_info fadt_info_table[] = {
-        {"Pm1aEventBlock", ACPI_FADT_OFFSET(xpm1a_event_block),
+        {"Pm1aEventBlock",
+         ACPI_FADT_OFFSET(xpm1a_event_block),
          ACPI_FADT_OFFSET(pm1a_event_block),
-         ACPI_FADT_OFFSET(pm1_event_length), ACPI_FADT_REQUIRED},
+         ACPI_FADT_OFFSET(pm1_event_length),
+         ACPI_PM1_REGISTER_WIDTH * 2,   /* Enable + Status register */
+         ACPI_FADT_REQUIRED},
 
-        {"Pm1bEventBlock", ACPI_FADT_OFFSET(xpm1b_event_block),
+        {"Pm1bEventBlock",
+         ACPI_FADT_OFFSET(xpm1b_event_block),
          ACPI_FADT_OFFSET(pm1b_event_block),
-         ACPI_FADT_OFFSET(pm1_event_length), 0},
+         ACPI_FADT_OFFSET(pm1_event_length),
+         ACPI_PM1_REGISTER_WIDTH * 2,   /* Enable + Status register */
+         0},
 
-        {"Pm1aControlBlock", ACPI_FADT_OFFSET(xpm1a_control_block),
+        {"Pm1aControlBlock",
+         ACPI_FADT_OFFSET(xpm1a_control_block),
          ACPI_FADT_OFFSET(pm1a_control_block),
-         ACPI_FADT_OFFSET(pm1_control_length), ACPI_FADT_REQUIRED},
+         ACPI_FADT_OFFSET(pm1_control_length),
+         ACPI_PM1_REGISTER_WIDTH,
+         ACPI_FADT_REQUIRED},
 
-        {"Pm1bControlBlock", ACPI_FADT_OFFSET(xpm1b_control_block),
+        {"Pm1bControlBlock",
+         ACPI_FADT_OFFSET(xpm1b_control_block),
          ACPI_FADT_OFFSET(pm1b_control_block),
-         ACPI_FADT_OFFSET(pm1_control_length), 0},
+         ACPI_FADT_OFFSET(pm1_control_length),
+         ACPI_PM1_REGISTER_WIDTH,
+         0},
 
-        {"Pm2ControlBlock", ACPI_FADT_OFFSET(xpm2_control_block),
+        {"Pm2ControlBlock",
+         ACPI_FADT_OFFSET(xpm2_control_block),
          ACPI_FADT_OFFSET(pm2_control_block),
-         ACPI_FADT_OFFSET(pm2_control_length), ACPI_FADT_SEPARATE_LENGTH},
+         ACPI_FADT_OFFSET(pm2_control_length),
+         ACPI_PM2_REGISTER_WIDTH,
+         ACPI_FADT_SEPARATE_LENGTH},
 
-        {"PmTimerBlock", ACPI_FADT_OFFSET(xpm_timer_block),
+        {"PmTimerBlock",
+         ACPI_FADT_OFFSET(xpm_timer_block),
          ACPI_FADT_OFFSET(pm_timer_block),
-         ACPI_FADT_OFFSET(pm_timer_length), ACPI_FADT_REQUIRED},
+         ACPI_FADT_OFFSET(pm_timer_length),
+         ACPI_PM_TIMER_WIDTH,
+         ACPI_FADT_REQUIRED},
 
-        {"Gpe0Block", ACPI_FADT_OFFSET(xgpe0_block),
+        {"Gpe0Block",
+         ACPI_FADT_OFFSET(xgpe0_block),
          ACPI_FADT_OFFSET(gpe0_block),
-         ACPI_FADT_OFFSET(gpe0_block_length), ACPI_FADT_SEPARATE_LENGTH},
+         ACPI_FADT_OFFSET(gpe0_block_length),
+         0,
+         ACPI_FADT_SEPARATE_LENGTH},
 
-        {"Gpe1Block", ACPI_FADT_OFFSET(xgpe1_block),
+        {"Gpe1Block",
+         ACPI_FADT_OFFSET(xgpe1_block),
          ACPI_FADT_OFFSET(gpe1_block),
-         ACPI_FADT_OFFSET(gpe1_block_length), ACPI_FADT_SEPARATE_LENGTH}
+         ACPI_FADT_OFFSET(gpe1_block_length),
+         0,
+         ACPI_FADT_SEPARATE_LENGTH}
 };
 
 #define ACPI_FADT_INFO_ENTRIES        (sizeof (fadt_info_table) / sizeof (struct acpi_fadt_info))
@@ -122,9 +148,9 @@ static struct acpi_fadt_info fadt_info_table[] = {
  *
  ******************************************************************************/
 
-static void inline
+static inline void
 acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,
-                             u8 byte_width, u64 address)
+                             u8 space_id, u8 byte_width, u64 address)
 {
 
         /*
@@ -135,10 +161,10 @@ acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,
 
         /* All other fields are byte-wide */
 
-        generic_address->space_id = ACPI_ADR_SPACE_SYSTEM_IO;
-        generic_address->bit_width = byte_width << 3;
+        generic_address->space_id = space_id;
+        generic_address->bit_width = (u8)ACPI_MUL_8(byte_width);
         generic_address->bit_offset = 0;
-        generic_address->access_width = 0;
+        generic_address->access_width = 0;      /* Access width ANY */
 }
 
 /*******************************************************************************
@@ -225,7 +251,8 @@ void acpi_tb_create_local_fadt(struct acpi_table_header *table, u32 length)
          */
         if (length > sizeof(struct acpi_table_fadt)) {
                 ACPI_WARNING((AE_INFO,
-                              "FADT (revision %u) is longer than ACPI 2.0 version, truncating length 0x%X to 0x%zX",
+                              "FADT (revision %u) is longer than ACPI 2.0 version, "
+                              "truncating length 0x%X to 0x%zX",
                               table->revision, (unsigned)length,
                               sizeof(struct acpi_table_fadt)));
         }
@@ -244,7 +271,6 @@ void acpi_tb_create_local_fadt(struct acpi_table_header *table, u32 length)
          * 2) Validate some of the important values within the FADT
          */
         acpi_tb_convert_fadt();
-        acpi_tb_validate_fadt();
 }
 
 /*******************************************************************************
@@ -278,22 +304,36 @@ void acpi_tb_create_local_fadt(struct acpi_table_header *table, u32 length)
 
 static void acpi_tb_convert_fadt(void)
 {
-        u8 pm1_register_length;
-        struct acpi_generic_address *target;
+        u8 pm1_register_bit_width;
+        u8 pm1_register_byte_width;
+        struct acpi_generic_address *target64;
         u32 i;
 
         /* Update the local FADT table header length */
 
         acpi_gbl_FADT.header.length = sizeof(struct acpi_table_fadt);
 
-        /* Expand the 32-bit FACS and DSDT addresses to 64-bit as necessary */
-
+        /*
+         * Expand the 32-bit FACS and DSDT addresses to 64-bit as necessary.
+         * Later code will always use the X 64-bit field. Also, check for an
+         * address mismatch between the 32-bit and 64-bit address fields
+         * (FIRMWARE_CTRL/X_FIRMWARE_CTRL, DSDT/X_DSDT) which would indicate
+         * the presence of two FACS or two DSDT tables.
+         */
         if (!acpi_gbl_FADT.Xfacs) {
                 acpi_gbl_FADT.Xfacs = (u64) acpi_gbl_FADT.facs;
+        } else if (acpi_gbl_FADT.facs &&
+                   (acpi_gbl_FADT.Xfacs != (u64) acpi_gbl_FADT.facs)) {
+                ACPI_WARNING((AE_INFO,
+                    "32/64 FACS address mismatch in FADT - two FACS tables!"));
         }
 
         if (!acpi_gbl_FADT.Xdsdt) {
                 acpi_gbl_FADT.Xdsdt = (u64) acpi_gbl_FADT.dsdt;
+        } else if (acpi_gbl_FADT.dsdt &&
+                   (acpi_gbl_FADT.Xdsdt != (u64) acpi_gbl_FADT.dsdt)) {
+                ACPI_WARNING((AE_INFO,
+                    "32/64 DSDT address mismatch in FADT - two DSDT tables!"));
         }
 
         /*
@@ -312,18 +352,23 @@ static void acpi_tb_convert_fadt(void)
         }
 
         /*
-         * Expand the ACPI 1.0 32-bit V1.0 addresses to the ACPI 2.0 64-bit "X"
-         * generic address structures as necessary.
+         * Expand the ACPI 1.0 32-bit addresses to the ACPI 2.0 64-bit "X"
+         * generic address structures as necessary. Later code will always use
+         * the 64-bit address structures.
          */
         for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) {
-                target =
+                target64 =
                     ACPI_ADD_PTR(struct acpi_generic_address, &acpi_gbl_FADT,
-                                 fadt_info_table[i].target);
+                                 fadt_info_table[i].address64);
 
-                /* Expand only if the X target is null */
+                /* Expand only if the 64-bit X target is null */
 
-                if (!target->address) {
-                        acpi_tb_init_generic_address(target,
+                if (!target64->address) {
+
+                        /* The space_id is always I/O for the 32-bit legacy address fields */
+
+                        acpi_tb_init_generic_address(target64,
+                                                     ACPI_ADR_SPACE_SYSTEM_IO,
                                                      *ACPI_ADD_PTR(u8,
                                                                    &acpi_gbl_FADT,
                                                                    fadt_info_table
@@ -332,11 +377,64 @@ static void acpi_tb_convert_fadt(void)
                                                                           &acpi_gbl_FADT,
                                                                           fadt_info_table
                                                                           [i].
-                                                                          source));
+                                                                          address32));
+                }
+        }
+
+        /* Validate FADT values now, before we make any changes */
+
+        acpi_tb_validate_fadt();
+
+        /*
+         * Optionally check all register lengths against the default values and
+         * update them if they are incorrect.
+         */
+        if (acpi_gbl_use_default_register_widths) {
+                for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) {
+                        target64 =
+                            ACPI_ADD_PTR(struct acpi_generic_address,
+                                         &acpi_gbl_FADT,
+                                         fadt_info_table[i].address64);
+
+                        /*
+                         * If a valid register (Address != 0) and the (default_length > 0)
+                         * (Not a GPE register), then check the width against the default.
+                         */
+                        if ((target64->address) &&
+                            (fadt_info_table[i].default_length > 0) &&
+                            (fadt_info_table[i].default_length !=
+                             target64->bit_width)) {
+                                ACPI_WARNING((AE_INFO,
+                                              "Invalid length for %s: %d, using default %d",
+                                              fadt_info_table[i].name,
+                                              target64->bit_width,
+                                              fadt_info_table[i].
+                                              default_length));
+
+                                /* Incorrect size, set width to the default */
+
+                                target64->bit_width =
+                                    fadt_info_table[i].default_length;
+                        }
                 }
         }
 
         /*
+         * Get the length of the individual PM1 registers (enable and status).
+         * Each register is defined to be (event block length / 2).
+         */
+        pm1_register_bit_width =
+            (u8)ACPI_DIV_2(acpi_gbl_FADT.xpm1a_event_block.bit_width);
+        pm1_register_byte_width = (u8)ACPI_DIV_8(pm1_register_bit_width);
+
+        /*
+         * Adjust the lengths of the PM1 Event Blocks so that they can be used to
+         * access the PM1 status register(s). Use (width / 2)
+         */
+        acpi_gbl_FADT.xpm1a_event_block.bit_width = pm1_register_bit_width;
+        acpi_gbl_FADT.xpm1b_event_block.bit_width = pm1_register_bit_width;
+
+        /*
          * Calculate separate GAS structs for the PM1 Enable registers.
          * These addresses do not appear (directly) in the FADT, so it is
          * useful to calculate them once, here.
@@ -356,14 +454,14 @@ static void acpi_tb_convert_fadt(void)
                        " PM1_EVT_LEN (%u)\n",
                        acpi_gbl_FADT.xpm1a_event_block.bit_width,
                        acpi_gbl_FADT.pm1_event_length);
-        pm1_register_length = (u8) ACPI_DIV_2(acpi_gbl_FADT.pm1_event_length);
 
         /* The PM1A register block is required */
 
         acpi_tb_init_generic_address(&acpi_gbl_xpm1a_enable,
-                                     pm1_register_length,
+                                     acpi_gbl_FADT.xpm1a_event_block.space_id,
+                                     pm1_register_byte_width,
                                      (acpi_gbl_FADT.xpm1a_event_block.address +
-                                      pm1_register_length));
+                                      pm1_register_byte_width));
         /* Don't forget to copy space_id of the GAS */
         acpi_gbl_xpm1a_enable.space_id =
             acpi_gbl_FADT.xpm1a_event_block.space_id;
@@ -379,9 +477,10 @@ static void acpi_tb_convert_fadt(void)
                                acpi_gbl_FADT.xpm1b_event_block.bit_width,
                                acpi_gbl_FADT.pm1_event_length);
                 acpi_tb_init_generic_address(&acpi_gbl_xpm1b_enable,
-                                             pm1_register_length,
+                                             acpi_gbl_FADT.xpm1b_event_block.space_id,
+                                             pm1_register_byte_width,
                                              (acpi_gbl_FADT.xpm1b_event_block.
-                                              address + pm1_register_length));
+                                              address + pm1_register_byte_width));
                 /* Don't forget to copy space_id of the GAS */
                 acpi_gbl_xpm1b_enable.space_id =
                     acpi_gbl_FADT.xpm1b_event_block.space_id;
@@ -411,26 +510,63 @@ static void acpi_tb_convert_fadt(void)
 
 static void acpi_tb_validate_fadt(void)
 {
+        char *name;
         u32 *address32;
         struct acpi_generic_address *address64;
         u8 length;
         u32 i;
 
-        /* Examine all of the 64-bit extended address fields (X fields) */
+        /*
+         * Check for FACS and DSDT address mismatches. An address mismatch between
+         * the 32-bit and 64-bit address fields (FIRMWARE_CTRL/X_FIRMWARE_CTRL and
+         * DSDT/X_DSDT) would indicate the presence of two FACS or two DSDT tables.
+         */
+        if (acpi_gbl_FADT.facs &&
+            (acpi_gbl_FADT.Xfacs != (u64) acpi_gbl_FADT.facs)) {
+                ACPI_WARNING((AE_INFO,
+                              "32/64X FACS address mismatch in FADT - "
+                              "two FACS tables! %8.8X/%8.8X%8.8X",
+                              acpi_gbl_FADT.facs,
+                              ACPI_FORMAT_UINT64(acpi_gbl_FADT.Xfacs)));
+        }
 
-        for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) {
+        if (acpi_gbl_FADT.dsdt &&
+            (acpi_gbl_FADT.Xdsdt != (u64) acpi_gbl_FADT.dsdt)) {
+                ACPI_WARNING((AE_INFO,
+                              "32/64X DSDT address mismatch in FADT - "
+                              "two DSDT tables! %8.8X/%8.8X%8.8X",
+                              acpi_gbl_FADT.dsdt,
+                              ACPI_FORMAT_UINT64(acpi_gbl_FADT.Xdsdt)));
+        }
 
-                /* Generate pointers to the 32-bit and 64-bit addresses and get the length */
+        /* Examine all of the 64-bit extended address fields (X fields) */
 
-                address64 =
-                    ACPI_ADD_PTR(struct acpi_generic_address, &acpi_gbl_FADT,
-                                 fadt_info_table[i].target);
+        for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) {
+                /*
+                 * Generate pointers to the 32-bit and 64-bit addresses, get the
+                 * register length (width), and the register name
+                 */
+                address64 = ACPI_ADD_PTR(struct acpi_generic_address,
+                                         &acpi_gbl_FADT,
+                                         fadt_info_table[i].address64);
                 address32 =
                     ACPI_ADD_PTR(u32, &acpi_gbl_FADT,
-                                 fadt_info_table[i].source);
+                                 fadt_info_table[i].address32);
                 length =
                     *ACPI_ADD_PTR(u8, &acpi_gbl_FADT,
                                   fadt_info_table[i].length);
+                name = fadt_info_table[i].name;
+
+                /*
+                 * For each extended field, check for length mismatch between the
+                 * legacy length field and the corresponding 64-bit X length field.
+                 */
+                if (address64 && (address64->bit_width != ACPI_MUL_8(length))) {
+                        ACPI_WARNING((AE_INFO,
+                                      "32/64X length mismatch in %s: %d/%d",
+                                      name, ACPI_MUL_8(length),
+                                      address64->bit_width));
+                }
 
                 if (fadt_info_table[i].type & ACPI_FADT_REQUIRED) {
                         /*
@@ -439,8 +575,8 @@ static void acpi_tb_validate_fadt(void)
                          */
                         if (!address64->address || !length) {
                                 ACPI_ERROR((AE_INFO,
-                                            "Required field \"%s\" has zero address and/or length: %8.8X%8.8X/%X",
-                                            fadt_info_table[i].name,
+                                            "Required field %s has zero address and/or length: %8.8X%8.8X/%X",
+                                            name,
                                             ACPI_FORMAT_UINT64(address64->
                                                                address),
                                             length));
@@ -453,8 +589,8 @@ static void acpi_tb_validate_fadt(void)
                         if ((address64->address && !length)
                             || (!address64->address && length)) {
                                 ACPI_WARNING((AE_INFO,
-                                              "Optional field \"%s\" has zero address or length: %8.8X%8.8X/%X",
-                                              fadt_info_table[i].name,
+                                              "Optional field %s has zero address or length: %8.8X%8.8X/%X",
+                                              name,
                                               ACPI_FORMAT_UINT64(address64->
                                                                  address),
                                               length));
@@ -466,8 +602,8 @@ static void acpi_tb_validate_fadt(void)
                 if (address64->address && *address32 &&
                     (address64->address != (u64) * address32)) {
                         ACPI_ERROR((AE_INFO,
-                                    "32/64X address mismatch in \"%s\": [%8.8X] [%8.8X%8.8X], using 64X",
-                                    fadt_info_table[i].name, *address32,
+                                    "32/64X address mismatch in %s: %8.8X/%8.8X%8.8X, using 64X",
+                                    name, *address32,
                                     ACPI_FORMAT_UINT64(address64->address)));
                 }
         }
diff --git a/drivers/acpi/tables/tbfind.c b/drivers/acpi/acpica/tbfind.c
index 531584defbb8..1054dfd49207 100644
--- a/drivers/acpi/tables/tbfind.c
+++ b/drivers/acpi/acpica/tbfind.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/actables.h>
+#include "accommon.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_TABLES
 ACPI_MODULE_NAME("tbfind")
diff --git a/drivers/acpi/tables/tbinstal.c b/drivers/acpi/acpica/tbinstal.c
index 18747ce8dd2f..37374b21969d 100644
--- a/drivers/acpi/tables/tbinstal.c
+++ b/drivers/acpi/acpica/tbinstal.c
@@ -42,8 +42,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/actables.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_TABLES
 ACPI_MODULE_NAME("tbinstal")
diff --git a/drivers/acpi/tables/tbutils.c b/drivers/acpi/acpica/tbutils.c
index 0cc92ef5236f..9684cc827930 100644
--- a/drivers/acpi/tables/tbutils.c
+++ b/drivers/acpi/acpica/tbutils.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/actables.h>
+#include "accommon.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_TABLES
 ACPI_MODULE_NAME("tbutils")
@@ -113,6 +114,30 @@ acpi_tb_check_xsdt(acpi_physical_address address)
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_tb_initialize_facs
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create a permanent mapping for the FADT and save it in a global
+ *              for accessing the Global Lock and Firmware Waking Vector
+ *
+ ******************************************************************************/
+
+acpi_status acpi_tb_initialize_facs(void)
+{
+        acpi_status status;
+
+        status = acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
+                                         ACPI_CAST_INDIRECT_PTR(struct
+                                                                acpi_table_header,
+                                                                &acpi_gbl_FACS));
+        return status;
+}
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_tb_tables_loaded
  *
  * PARAMETERS:  None
@@ -420,7 +445,8 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address, u8 flags)
 
         /* Differentiate between RSDT and XSDT root tables */
 
-        if (rsdp->revision > 1 && rsdp->xsdt_physical_address) {
+        if (rsdp->revision > 1 && rsdp->xsdt_physical_address
+                        && !acpi_rsdt_forced) {
                 /*
                  * Root table is an XSDT (64-bit physical addresses). We must use the
                  * XSDT if the revision is > 1 and the XSDT pointer is present, as per
diff --git a/drivers/acpi/tables/tbxface.c b/drivers/acpi/acpica/tbxface.c
index fd7770aa1061..c3e841f3cde9 100644
--- a/drivers/acpi/tables/tbxface.c
+++ b/drivers/acpi/acpica/tbxface.c
@@ -43,8 +43,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/actables.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_TABLES
 ACPI_MODULE_NAME("tbxface")
diff --git a/drivers/acpi/tables/tbxfroot.c b/drivers/acpi/acpica/tbxfroot.c
index 2d157e0f98d2..b7fc8dd43341 100644
--- a/drivers/acpi/tables/tbxfroot.c
+++ b/drivers/acpi/acpica/tbxfroot.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/actables.h>
+#include "accommon.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_TABLES
 ACPI_MODULE_NAME("tbxfroot")
diff --git a/drivers/acpi/utilities/utalloc.c b/drivers/acpi/acpica/utalloc.c
index 241c535c1753..7580f6b3069e 100644
--- a/drivers/acpi/utilities/utalloc.c
+++ b/drivers/acpi/acpica/utalloc.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acdebug.h>
+#include "accommon.h"
+#include "acdebug.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utalloc")
diff --git a/drivers/acpi/utilities/utcopy.c b/drivers/acpi/acpica/utcopy.c
index 5b2f7c27b705..b0dcfd3c872a 100644
--- a/drivers/acpi/utilities/utcopy.c
+++ b/drivers/acpi/acpica/utcopy.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acnamesp.h"
 
 
 #define _COMPONENT          ACPI_UTILITIES
diff --git a/drivers/acpi/utilities/utdebug.c b/drivers/acpi/acpica/utdebug.c
index fd66ecb6741e..38821f53042c 100644
--- a/drivers/acpi/utilities/utdebug.c
+++ b/drivers/acpi/acpica/utdebug.c
@@ -42,6 +42,7 @@
  */
 
 #include <acpi/acpi.h>
+#include "accommon.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utdebug")
@@ -136,7 +137,7 @@ static const char *acpi_ut_trim_function_name(const char *function_name)
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ut_debug_print
+ * FUNCTION:    acpi_debug_print
  *
  * PARAMETERS:  requested_debug_level - Requested debug print level
  *              line_number         - Caller's line number (for error output)
@@ -154,11 +155,11 @@ static const char *acpi_ut_trim_function_name(const char *function_name)
  ******************************************************************************/
 
 void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_debug_print(u32 requested_debug_level,
-                    u32 line_number,
-                    const char *function_name,
-                    const char *module_name,
-                    u32 component_id, const char *format, ...)
+acpi_debug_print(u32 requested_debug_level,
+                 u32 line_number,
+                 const char *function_name,
+                 const char *module_name,
+                 u32 component_id, const char *format, ...)
 {
         acpi_thread_id thread_id;
         va_list args;
@@ -205,11 +206,11 @@ acpi_ut_debug_print(u32 requested_debug_level,
         va_end(args);
 }
 
-ACPI_EXPORT_SYMBOL(acpi_ut_debug_print)
+ACPI_EXPORT_SYMBOL(acpi_debug_print)
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ut_debug_print_raw
+ * FUNCTION:    acpi_debug_print_raw
  *
  * PARAMETERS:  requested_debug_level - Requested debug print level
  *              line_number         - Caller's line number
@@ -226,11 +227,11 @@ ACPI_EXPORT_SYMBOL(acpi_ut_debug_print)
  *
  ******************************************************************************/
 void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_debug_print_raw(u32 requested_debug_level,
-                        u32 line_number,
-                        const char *function_name,
-                        const char *module_name,
-                        u32 component_id, const char *format, ...)
+acpi_debug_print_raw(u32 requested_debug_level,
+                     u32 line_number,
+                     const char *function_name,
+                     const char *module_name,
+                     u32 component_id, const char *format, ...)
 {
         va_list args;
 
@@ -244,7 +245,7 @@ acpi_ut_debug_print_raw(u32 requested_debug_level,
         va_end(args);
 }
 
-ACPI_EXPORT_SYMBOL(acpi_ut_debug_print_raw)
+ACPI_EXPORT_SYMBOL(acpi_debug_print_raw)
 
 /*******************************************************************************
  *
@@ -270,9 +271,9 @@ acpi_ut_trace(u32 line_number,
         acpi_gbl_nesting_level++;
         acpi_ut_track_stack_ptr();
 
-        acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
-                            line_number, function_name, module_name,
-                            component_id, "%s\n", acpi_gbl_fn_entry_str);
+        acpi_debug_print(ACPI_LV_FUNCTIONS,
+                         line_number, function_name, module_name, component_id,
+                         "%s\n", acpi_gbl_fn_entry_str);
 }
 
 ACPI_EXPORT_SYMBOL(acpi_ut_trace)
@@ -301,10 +302,9 @@ acpi_ut_trace_ptr(u32 line_number,
         acpi_gbl_nesting_level++;
         acpi_ut_track_stack_ptr();
 
-        acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
-                            line_number, function_name, module_name,
-                            component_id, "%s %p\n", acpi_gbl_fn_entry_str,
-                            pointer);
+        acpi_debug_print(ACPI_LV_FUNCTIONS,
+                         line_number, function_name, module_name, component_id,
+                         "%s %p\n", acpi_gbl_fn_entry_str, pointer);
 }
 
 /*******************************************************************************
@@ -333,10 +333,9 @@ acpi_ut_trace_str(u32 line_number,
         acpi_gbl_nesting_level++;
         acpi_ut_track_stack_ptr();
 
-        acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
-                            line_number, function_name, module_name,
-                            component_id, "%s %s\n", acpi_gbl_fn_entry_str,
-                            string);
+        acpi_debug_print(ACPI_LV_FUNCTIONS,
+                         line_number, function_name, module_name, component_id,
+                         "%s %s\n", acpi_gbl_fn_entry_str, string);
 }
 
 /*******************************************************************************
@@ -365,10 +364,9 @@ acpi_ut_trace_u32(u32 line_number,
         acpi_gbl_nesting_level++;
         acpi_ut_track_stack_ptr();
 
-        acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
-                            line_number, function_name, module_name,
-                            component_id, "%s %08X\n", acpi_gbl_fn_entry_str,
-                            integer);
+        acpi_debug_print(ACPI_LV_FUNCTIONS,
+                         line_number, function_name, module_name, component_id,
+                         "%s %08X\n", acpi_gbl_fn_entry_str, integer);
 }
 
 /*******************************************************************************
@@ -393,9 +391,9 @@ acpi_ut_exit(u32 line_number,
              const char *module_name, u32 component_id)
 {
 
-        acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
-                            line_number, function_name, module_name,
-                            component_id, "%s\n", acpi_gbl_fn_exit_str);
+        acpi_debug_print(ACPI_LV_FUNCTIONS,
+                         line_number, function_name, module_name, component_id,
+                         "%s\n", acpi_gbl_fn_exit_str);
 
         acpi_gbl_nesting_level--;
 }
@@ -426,17 +424,16 @@ acpi_ut_status_exit(u32 line_number,
 {
 
         if (ACPI_SUCCESS(status)) {
-                acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
-                                    line_number, function_name, module_name,
-                                    component_id, "%s %s\n",
-                                    acpi_gbl_fn_exit_str,
-                                    acpi_format_exception(status));
+                acpi_debug_print(ACPI_LV_FUNCTIONS,
+                                 line_number, function_name, module_name,
+                                 component_id, "%s %s\n", acpi_gbl_fn_exit_str,
+                                 acpi_format_exception(status));
         } else {
-                acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
-                                    line_number, function_name, module_name,
-                                    component_id, "%s ****Exception****: %s\n",
-                                    acpi_gbl_fn_exit_str,
-                                    acpi_format_exception(status));
+                acpi_debug_print(ACPI_LV_FUNCTIONS,
+                                 line_number, function_name, module_name,
+                                 component_id, "%s ****Exception****: %s\n",
+                                 acpi_gbl_fn_exit_str,
+                                 acpi_format_exception(status));
         }
 
         acpi_gbl_nesting_level--;
@@ -467,10 +464,10 @@ acpi_ut_value_exit(u32 line_number,
                    u32 component_id, acpi_integer value)
 {
 
-        acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
-                            line_number, function_name, module_name,
-                            component_id, "%s %8.8X%8.8X\n",
-                            acpi_gbl_fn_exit_str, ACPI_FORMAT_UINT64(value));
+        acpi_debug_print(ACPI_LV_FUNCTIONS,
+                         line_number, function_name, module_name, component_id,
+                         "%s %8.8X%8.8X\n", acpi_gbl_fn_exit_str,
+                         ACPI_FORMAT_UINT64(value));
 
         acpi_gbl_nesting_level--;
 }
@@ -499,9 +496,9 @@ acpi_ut_ptr_exit(u32 line_number,
                  const char *module_name, u32 component_id, u8 *ptr)
 {
 
-        acpi_ut_debug_print(ACPI_LV_FUNCTIONS,
-                            line_number, function_name, module_name,
-                            component_id, "%s %p\n", acpi_gbl_fn_exit_str, ptr);
+        acpi_debug_print(ACPI_LV_FUNCTIONS,
+                         line_number, function_name, module_name, component_id,
+                         "%s %p\n", acpi_gbl_fn_exit_str, ptr);
 
         acpi_gbl_nesting_level--;
 }
diff --git a/drivers/acpi/utilities/utdelete.c b/drivers/acpi/acpica/utdelete.c
index d197c6b29e17..a0be9e39531e 100644
--- a/drivers/acpi/utilities/utdelete.c
+++ b/drivers/acpi/acpica/utdelete.c
@@ -42,9 +42,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acinterp.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acevents.h>
+#include "accommon.h"
+#include "acinterp.h"
+#include "acnamesp.h"
+#include "acevents.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utdelete")
diff --git a/drivers/acpi/utilities/uteval.c b/drivers/acpi/acpica/uteval.c
index 352747e49c7a..da9450bc60f7 100644
--- a/drivers/acpi/utilities/uteval.c
+++ b/drivers/acpi/acpica/uteval.c
@@ -42,8 +42,9 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acinterp.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("uteval")
@@ -129,7 +130,7 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
 
                         /* The interface is supported */
 
-                        return_ACPI_STATUS(AE_CTRL_TERMINATE);
+                        return_ACPI_STATUS(AE_OK);
                 }
         }
 
@@ -143,13 +144,13 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
 
                 /* The interface is supported */
 
-                return_ACPI_STATUS(AE_CTRL_TERMINATE);
+                return_ACPI_STATUS(AE_OK);
         }
 
         /* The interface is not supported */
 
         return_desc->integer.value = 0;
-        return_ACPI_STATUS(AE_CTRL_TERMINATE);
+        return_ACPI_STATUS(AE_OK);
 }
 
 /*******************************************************************************
diff --git a/drivers/acpi/utilities/utglobal.c b/drivers/acpi/acpica/utglobal.c
index 17ed5ac840f7..a3ab9d9da299 100644
--- a/drivers/acpi/utilities/utglobal.c
+++ b/drivers/acpi/acpica/utglobal.c
@@ -44,11 +44,11 @@
 #define DEFINE_ACPI_GLOBALS
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acnamesp.h"
 
-ACPI_EXPORT_SYMBOL(acpi_gbl_FADT)
 #define _COMPONENT          ACPI_UTILITIES
-    ACPI_MODULE_NAME("utglobal")
+ACPI_MODULE_NAME("utglobal")
 
 /*******************************************************************************
  *
@@ -352,7 +352,7 @@ const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
         "PCI_Config",
         "EmbeddedControl",
         "SMBus",
-        "CMOS",
+        "SystemCMOS",
         "PCIBARTarget",
         "DataTable"
 };
@@ -756,6 +756,7 @@ acpi_status acpi_ut_init_globals(void)
         acpi_gbl_gpe_xrupt_list_head = NULL;
         acpi_gbl_gpe_fadt_blocks[0] = NULL;
         acpi_gbl_gpe_fadt_blocks[1] = NULL;
+        acpi_current_gpe_count = 0;
 
         /* Global handlers */
 
@@ -771,6 +772,7 @@ acpi_status acpi_ut_init_globals(void)
         acpi_gbl_global_lock_mutex = NULL;
         acpi_gbl_global_lock_acquired = FALSE;
         acpi_gbl_global_lock_handle = 0;
+        acpi_gbl_global_lock_present = FALSE;
 
         /* Miscellaneous variables */
 
@@ -815,5 +817,7 @@ acpi_status acpi_ut_init_globals(void)
         return_ACPI_STATUS(AE_OK);
 }
 
+ACPI_EXPORT_SYMBOL(acpi_gbl_FADT)
 ACPI_EXPORT_SYMBOL(acpi_dbg_level)
 ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
+ACPI_EXPORT_SYMBOL(acpi_current_gpe_count)
diff --git a/drivers/acpi/utilities/utinit.c b/drivers/acpi/acpica/utinit.c
index cae515fc02d3..a54ca84eb362 100644
--- a/drivers/acpi/utilities/utinit.c
+++ b/drivers/acpi/acpica/utinit.c
@@ -42,9 +42,10 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acevents.h>
-#include <acpi/actables.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acevents.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utinit")
diff --git a/drivers/acpi/utilities/utmath.c b/drivers/acpi/acpica/utmath.c
index c927324fdd26..c9f682d640ef 100644
--- a/drivers/acpi/utilities/utmath.c
+++ b/drivers/acpi/acpica/utmath.c
@@ -42,6 +42,7 @@
  */
 
 #include <acpi/acpi.h>
+#include "accommon.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utmath")
diff --git a/drivers/acpi/utilities/utmisc.c b/drivers/acpi/acpica/utmisc.c
index 9089a158a874..c1f7f4e1a72d 100644
--- a/drivers/acpi/utilities/utmisc.c
+++ b/drivers/acpi/acpica/utmisc.c
@@ -44,7 +44,8 @@
 #include <linux/module.h>
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utmisc")
@@ -1016,7 +1017,7 @@ acpi_ut_walk_package_tree(union acpi_operand_object * source_object,
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ut_error, acpi_ut_warning, acpi_ut_info
+ * FUNCTION:    acpi_error, acpi_exception, acpi_warning, acpi_info
  *
  * PARAMETERS:  module_name         - Caller's module name (for error output)
  *              line_number         - Caller's line number (for error output)
@@ -1029,7 +1030,7 @@ acpi_ut_walk_package_tree(union acpi_operand_object * source_object,
  ******************************************************************************/
 
 void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_error(const char *module_name, u32 line_number, const char *format, ...)
+acpi_error(const char *module_name, u32 line_number, const char *format, ...)
 {
         va_list args;
 
@@ -1042,8 +1043,8 @@ acpi_ut_error(const char *module_name, u32 line_number, const char *format, ...)
 }
 
 void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_exception(const char *module_name,
-                  u32 line_number, acpi_status status, const char *format, ...)
+acpi_exception(const char *module_name,
+               u32 line_number, acpi_status status, const char *format, ...)
 {
         va_list args;
 
@@ -1056,11 +1057,8 @@ acpi_ut_exception(const char *module_name,
         va_end(args);
 }
 
-EXPORT_SYMBOL(acpi_ut_exception);
-
 void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_warning(const char *module_name,
-                u32 line_number, const char *format, ...)
+acpi_warning(const char *module_name, u32 line_number, const char *format, ...)
 {
         va_list args;
 
@@ -1073,7 +1071,7 @@ acpi_ut_warning(const char *module_name,
 }
 
 void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_info(const char *module_name, u32 line_number, const char *format, ...)
+acpi_info(const char *module_name, u32 line_number, const char *format, ...)
 {
         va_list args;
 
@@ -1088,3 +1086,8 @@ acpi_ut_info(const char *module_name, u32 line_number, const char *format, ...)
         acpi_os_printf("\n");
         va_end(args);
 }
+
+ACPI_EXPORT_SYMBOL(acpi_error)
+ACPI_EXPORT_SYMBOL(acpi_exception)
+ACPI_EXPORT_SYMBOL(acpi_warning)
+ACPI_EXPORT_SYMBOL(acpi_info)
diff --git a/drivers/acpi/utilities/utmutex.c b/drivers/acpi/acpica/utmutex.c
index 7331dde9e1b3..14eb52c4d647 100644
--- a/drivers/acpi/utilities/utmutex.c
+++ b/drivers/acpi/acpica/utmutex.c
@@ -42,6 +42,7 @@
  */
 
 #include <acpi/acpi.h>
+#include "accommon.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utmutex")
diff --git a/drivers/acpi/utilities/utobject.c b/drivers/acpi/acpica/utobject.c
index 4bef3cfbaccb..fd5ea7543e5b 100644
--- a/drivers/acpi/utilities/utobject.c
+++ b/drivers/acpi/acpica/utobject.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
+#include "accommon.h"
+#include "acnamesp.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utobject")
diff --git a/drivers/acpi/utilities/utresrc.c b/drivers/acpi/acpica/utresrc.c
index c3e3e1308edc..91b7c00236f4 100644
--- a/drivers/acpi/utilities/utresrc.c
+++ b/drivers/acpi/acpica/utresrc.c
@@ -42,7 +42,8 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/amlresrc.h>
+#include "accommon.h"
+#include "amlresrc.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utresrc")
diff --git a/drivers/acpi/utilities/utstate.c b/drivers/acpi/acpica/utstate.c
index 63a6d3d77d88..0440c958f5a4 100644
--- a/drivers/acpi/utilities/utstate.c
+++ b/drivers/acpi/acpica/utstate.c
@@ -42,6 +42,7 @@
  */
 
 #include <acpi/acpi.h>
+#include "accommon.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utstate")
diff --git a/drivers/acpi/utilities/utxface.c b/drivers/acpi/acpica/utxface.c
index c198a4d40583..078a22728c6b 100644
--- a/drivers/acpi/utilities/utxface.c
+++ b/drivers/acpi/acpica/utxface.c
@@ -42,9 +42,11 @@
  */
 
 #include <acpi/acpi.h>
-#include <acpi/acevents.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acdebug.h>
+#include "accommon.h"
+#include "acevents.h"
+#include "acnamesp.h"
+#include "acdebug.h"
+#include "actables.h"
 
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utxface")
@@ -148,6 +150,16 @@ acpi_status acpi_enable_subsystem(u32 flags)
         }
 
         /*
+         * Obtain a permanent mapping for the FACS. This is required for the
+         * Global Lock and the Firmware Waking Vector
+         */
+        status = acpi_tb_initialize_facs();
+        if (ACPI_FAILURE(status)) {
+                ACPI_WARNING((AE_INFO, "Could not map the FACS table"));
+                return_ACPI_STATUS(status);
+        }
+
+        /*
          * Install the default op_region handlers. These are installed unless
          * other handlers have already been installed via the
          * install_address_space_handler interface.
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 1423b0c0cd2e..65132f920459 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -471,7 +471,7 @@ static void sysfs_remove_battery(struct acpi_battery *battery)
 
 static int acpi_battery_update(struct acpi_battery *battery)
 {
-        int result;
+        int result, old_present = acpi_battery_present(battery);
         result = acpi_battery_get_status(battery);
         if (result)
                 return result;
@@ -482,7 +482,8 @@ static int acpi_battery_update(struct acpi_battery *battery)
                 return 0;
         }
 #endif
-        if (!battery->update_time) {
+        if (!battery->update_time ||
+            old_present != acpi_battery_present(battery)) {
                 result = acpi_battery_get_info(battery);
                 if (result)
                         return result;
diff --git a/drivers/acpi/cm_sbs.c b/drivers/acpi/cm_sbs.c
index 307963bd1043..332fe4b21708 100644
--- a/drivers/acpi/cm_sbs.c
+++ b/drivers/acpi/cm_sbs.c
@@ -27,9 +27,6 @@
 #include <linux/seq_file.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
-#include <acpi/acmacros.h>
-#include <acpi/actypes.h>
-#include <acpi/acutils.h>
 
 ACPI_MODULE_NAME("cm_sbs");
 #define ACPI_AC_CLASS           "ac_adapter"
diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c
index c48396892008..20223cbd0d1c 100644
--- a/drivers/acpi/debug.c
+++ b/drivers/acpi/debug.c
@@ -9,7 +9,6 @@
 #include <linux/moduleparam.h>
 #include <asm/uaccess.h>
 #include <acpi/acpi_drivers.h>
-#include <acpi/acglobal.h>
 
 #define _COMPONENT              ACPI_SYSTEM_COMPONENT
 ACPI_MODULE_NAME("debug");
diff --git a/drivers/acpi/dispatcher/Makefile b/drivers/acpi/dispatcher/Makefile
deleted file mode 100644
index eb7e602a83cd..000000000000
--- a/drivers/acpi/dispatcher/Makefile
+++ /dev/null
@@ -1,9 +0,0 @@
-#
-# Makefile for all Linux ACPI interpreter subdirectories
-#
-
-obj-y := dsfield.o   dsmthdat.o  dsopcode.o  dswexec.o  dswscope.o \
-         dsmethod.o  dsobject.o  dsutils.o   dswload.o  dswstate.o \
-         dsinit.o
-
-EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 30f3ef236ecb..8dfcbb8aff73 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -42,7 +42,6 @@
 #include <asm/io.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
-#include <acpi/actypes.h>
 
 #define ACPI_EC_CLASS                   "embedded_controller"
 #define ACPI_EC_DEVICE_NAME             "Embedded Controller"
@@ -370,7 +369,7 @@ unlock:
  * Note: samsung nv5000 doesn't work with ec burst mode.
  * http://bugzilla.kernel.org/show_bug.cgi?id=4980
  */
-int acpi_ec_burst_enable(struct acpi_ec *ec)
+static int acpi_ec_burst_enable(struct acpi_ec *ec)
 {
         u8 d;
         struct transaction t = {.command = ACPI_EC_BURST_ENABLE,
@@ -380,7 +379,7 @@ int acpi_ec_burst_enable(struct acpi_ec *ec)
         return acpi_ec_transaction(ec, &t, 0);
 }
 
-int acpi_ec_burst_disable(struct acpi_ec *ec)
+static int acpi_ec_burst_disable(struct acpi_ec *ec)
 {
         struct transaction t = {.command = ACPI_EC_BURST_DISABLE,
                                 .wdata = NULL, .rdata = NULL,
@@ -756,10 +755,15 @@ static acpi_status
 acpi_ec_register_query_methods(acpi_handle handle, u32 level,
                                void *context, void **return_value)
 {
-        struct acpi_namespace_node *node = handle;
+        char node_name[5];
+        struct acpi_buffer buffer = { sizeof(node_name), node_name };
         struct acpi_ec *ec = context;
         int value = 0;
-        if (sscanf(node->name.ascii, "_Q%x", &value) == 1) {
+        acpi_status status;
+
+        status = acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer);
+
+        if (ACPI_SUCCESS(status) && sscanf(node_name, "_Q%x", &value) == 1) {
                 acpi_ec_add_query_handler(ec, value, handle, NULL, NULL);
         }
         return AE_OK;
@@ -978,9 +982,9 @@ static const struct acpi_device_id ec_device_ids[] = {
 
 int __init acpi_ec_ecdt_probe(void)
 {
-        int ret;
         acpi_status status;
         struct acpi_table_ecdt *ecdt_ptr;
+        acpi_handle dummy;
 
         boot_ec = make_acpi_ec();
         if (!boot_ec)
@@ -1006,30 +1010,31 @@ int __init acpi_ec_ecdt_probe(void)
                 boot_ec->gpe = ecdt_ptr->gpe;
                 boot_ec->handle = ACPI_ROOT_OBJECT;
                 acpi_get_handle(ACPI_ROOT_OBJECT, ecdt_ptr->id, &boot_ec->handle);
-        } else {
-                /* This workaround is needed only on some broken machines,
-                 * which require early EC, but fail to provide ECDT */
-                acpi_handle x;
-                printk(KERN_DEBUG PREFIX "Look up EC in DSDT\n");
-                status = acpi_get_devices(ec_device_ids[0].id, ec_parse_device,
-                                                boot_ec, NULL);
-                /* Check that acpi_get_devices actually find something */
-                if (ACPI_FAILURE(status) || !boot_ec->handle)
-                        goto error;
-                /* We really need to limit this workaround, the only ASUS,
-                 * which needs it, has fake EC._INI method, so use it as flag.
-                 * Keep boot_ec struct as it will be needed soon.
-                 */
-                if (ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI", &x)))
-                        return -ENODEV;
+                /* Add some basic check against completely broken table */
+                if (boot_ec->data_addr != boot_ec->command_addr)
+                        goto install;
+        /* fall through */
         }
-
-        ret = ec_install_handlers(boot_ec);
-        if (!ret) {
+        /* This workaround is needed only on some broken machines,
+         * which require early EC, but fail to provide ECDT */
+        printk(KERN_DEBUG PREFIX "Look up EC in DSDT\n");
+        status = acpi_get_devices(ec_device_ids[0].id, ec_parse_device,
+                                        boot_ec, NULL);
+        /* Check that acpi_get_devices actually find something */
+        if (ACPI_FAILURE(status) || !boot_ec->handle)
+                goto error;
+        /* We really need to limit this workaround, the only ASUS,
+         * which needs it, has fake EC._INI method, so use it as flag.
+         * Keep boot_ec struct as it will be needed soon.
+         */
+        if (ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI", &dummy)))
+                return -ENODEV;
+install:
+        if (!ec_install_handlers(boot_ec)) {
                 first_ec = boot_ec;
                 return 0;
         }
-      error:
+error:
         kfree(boot_ec);
         boot_ec = NULL;
         return -ENODEV;
diff --git a/drivers/acpi/events/Makefile b/drivers/acpi/events/Makefile
deleted file mode 100644
index d29f2ee449cc..000000000000
--- a/drivers/acpi/events/Makefile
+++ /dev/null
@@ -1,9 +0,0 @@
-#
-# Makefile for all Linux ACPI interpreter subdirectories
-#
-
-obj-y := evevent.o  evregion.o  evsci.o    evxfevnt.o \
-         evmisc.o   evrgnini.o  evxface.o  evxfregn.o \
-         evgpe.o    evgpeblk.o
-
-EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/executer/Makefile b/drivers/acpi/executer/Makefile
deleted file mode 100644
index e09998aa012f..000000000000
--- a/drivers/acpi/executer/Makefile
+++ /dev/null
@@ -1,10 +0,0 @@
-#
-# Makefile for all Linux ACPI interpreter subdirectories
-#
-
-obj-y := exconfig.o  exfield.o  exnames.o   exoparg6.o  exresolv.o  exstorob.o\
-         exconvrt.o  exfldio.o  exoparg1.o  exprep.o    exresop.o   exsystem.o\
-         excreate.o  exmisc.o   exoparg2.o  exregion.o  exstore.o   exutils.o \
-         exdump.o    exmutex.o  exoparg3.o  exresnte.o  exstoren.o
-
-EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/hardware/Makefile b/drivers/acpi/hardware/Makefile
deleted file mode 100644
index 438ad373b9ad..000000000000
--- a/drivers/acpi/hardware/Makefile
+++ /dev/null
@@ -1,9 +0,0 @@
-#
-# Makefile for all Linux ACPI interpreter subdirectories
-#
-
-obj-y := hwacpi.o  hwgpe.o  hwregs.o  hwsleep.o
-
-obj-$(ACPI_FUTURE_USAGE) += hwtimer.o
-
-EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/main.c
index 28a691cc625e..7e3c609cbef2 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/main.c
@@ -101,13 +101,26 @@ void __init acpi_old_suspend_ordering(void)
  * cases.
  */
 static bool set_sci_en_on_resume;
+/*
+ * The ACPI specification wants us to save NVS memory regions during hibernation
+ * and to restore them during the subsequent resume.  However, it is not certain
+ * if this mechanism is going to work on all machines, so we allow the user to
+ * disable this mechanism using the 'acpi_sleep=s4_nonvs' kernel command line
+ * option.
+ */
+static bool s4_no_nvs;
+
+void __init acpi_s4_no_nvs(void)
+{
+        s4_no_nvs = true;
+}
 
 /**
  *      acpi_pm_disable_gpes - Disable the GPEs.
  */
 static int acpi_pm_disable_gpes(void)
 {
-        acpi_hw_disable_all_gpes();
+        acpi_disable_all_gpes();
         return 0;
 }
 
@@ -135,7 +148,7 @@ static int acpi_pm_prepare(void)
         int error = __acpi_pm_prepare();
 
         if (!error)
-                acpi_hw_disable_all_gpes();
+                acpi_disable_all_gpes();
         return error;
 }
 
@@ -267,7 +280,7 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
          * (like wakeup GPE) haven't handler, this can avoid such GPE misfire.
          * acpi_leave_sleep_state will reenable specific GPEs later
          */
-        acpi_hw_disable_all_gpes();
+        acpi_disable_all_gpes();
 
         local_irq_restore(flags);
         printk(KERN_DEBUG "Back to C!\n");
@@ -394,9 +407,25 @@ void __init acpi_no_s4_hw_signature(void)
 
 static int acpi_hibernation_begin(void)
 {
-        acpi_target_sleep_state = ACPI_STATE_S4;
-        acpi_sleep_tts_switch(acpi_target_sleep_state);
-        return 0;
+        int error;
+
+        error = s4_no_nvs ? 0 : hibernate_nvs_alloc();
+        if (!error) {
+                acpi_target_sleep_state = ACPI_STATE_S4;
+                acpi_sleep_tts_switch(acpi_target_sleep_state);
+        }
+
+        return error;
+}
+
+static int acpi_hibernation_pre_snapshot(void)
+{
+        int error = acpi_pm_prepare();
+
+        if (!error)
+                hibernate_nvs_save();
+
+        return error;
 }
 
 static int acpi_hibernation_enter(void)
@@ -417,6 +446,12 @@ static int acpi_hibernation_enter(void)
         return ACPI_SUCCESS(status) ? 0 : -EFAULT;
 }
 
+static void acpi_hibernation_finish(void)
+{
+        hibernate_nvs_free();
+        acpi_pm_finish();
+}
+
 static void acpi_hibernation_leave(void)
 {
         /*
@@ -432,18 +467,20 @@ static void acpi_hibernation_leave(void)
                         "cannot resume!\n");
                 panic("ACPI S4 hardware signature mismatch");
         }
+        /* Restore the NVS memory area */
+        hibernate_nvs_restore();
 }
 
 static void acpi_pm_enable_gpes(void)
 {
-        acpi_hw_enable_all_runtime_gpes();
+        acpi_enable_all_runtime_gpes();
 }
 
 static struct platform_hibernation_ops acpi_hibernation_ops = {
         .begin = acpi_hibernation_begin,
         .end = acpi_pm_end,
-        .pre_snapshot = acpi_pm_prepare,
-        .finish = acpi_pm_finish,
+        .pre_snapshot = acpi_hibernation_pre_snapshot,
+        .finish = acpi_hibernation_finish,
         .prepare = acpi_pm_prepare,
         .enter = acpi_hibernation_enter,
         .leave = acpi_hibernation_leave,
@@ -469,8 +506,22 @@ static int acpi_hibernation_begin_old(void)
 
         error = acpi_sleep_prepare(ACPI_STATE_S4);
 
+        if (!error) {
+                if (!s4_no_nvs)
+                        error = hibernate_nvs_alloc();
+                if (!error)
+                        acpi_target_sleep_state = ACPI_STATE_S4;
+        }
+        return error;
+}
+
+static int acpi_hibernation_pre_snapshot_old(void)
+{
+        int error = acpi_pm_disable_gpes();
+
         if (!error)
-                acpi_target_sleep_state = ACPI_STATE_S4;
+                hibernate_nvs_save();
+
         return error;
 }
 
@@ -481,8 +532,8 @@ static int acpi_hibernation_begin_old(void)
 static struct platform_hibernation_ops acpi_hibernation_ops_old = {
         .begin = acpi_hibernation_begin_old,
         .end = acpi_pm_end,
-        .pre_snapshot = acpi_pm_disable_gpes,
-        .finish = acpi_pm_finish,
+        .pre_snapshot = acpi_hibernation_pre_snapshot_old,
+        .finish = acpi_hibernation_finish,
         .prepare = acpi_pm_disable_gpes,
         .enter = acpi_hibernation_enter,
         .leave = acpi_hibernation_leave,
@@ -622,7 +673,7 @@ static void acpi_power_off_prepare(void)
 {
         /* Prepare to power off the system */
         acpi_sleep_prepare(ACPI_STATE_S5);
-        acpi_hw_disable_all_gpes();
+        acpi_disable_all_gpes();
 }
 
 static void acpi_power_off(void)
@@ -671,7 +722,7 @@ int __init acpi_sleep_init(void)
                 sleep_states[ACPI_STATE_S4] = 1;
                 printk(" S4");
                 if (!nosigcheck) {
-                        acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
+                        acpi_get_table(ACPI_SIG_FACS, 1,
                                 (struct acpi_table_header **)&facs);
                         if (facs)
                                 s4_hardware_signature =
diff --git a/drivers/acpi/namespace/Makefile b/drivers/acpi/namespace/Makefile
deleted file mode 100644
index 371a2daf837f..000000000000
--- a/drivers/acpi/namespace/Makefile
+++ /dev/null
@@ -1,12 +0,0 @@
-#
-# Makefile for all Linux ACPI interpreter subdirectories
-#
-
-obj-y := nsaccess.o  nsload.o    nssearch.o  nsxfeval.o \
-         nsalloc.o   nseval.o    nsnames.o   nsutils.o   nsxfname.o \
-         nsdump.o    nsinit.o    nsobject.o  nswalk.o    nsxfobj.o  \
-         nsparse.o   nspredef.o
-
-obj-$(ACPI_FUTURE_USAGE) += nsdumpdv.o
-
-EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 25ceae9191ef..c5e292aab0e3 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -29,7 +29,6 @@
 #include <linux/errno.h>
 #include <linux/acpi.h>
 #include <acpi/acpi_bus.h>
-#include <acpi/acmacros.h>
 
 #define ACPI_NUMA       0x80000000
 #define _COMPONENT      ACPI_NUMA
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index c8111424dcb8..6729a4992f2b 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -726,7 +726,7 @@ static acpi_status __acpi_os_execute(acpi_execute_type type,
 
         dpc = kmalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC);
         if (!dpc)
-                return_ACPI_STATUS(AE_NO_MEMORY);
+                return AE_NO_MEMORY;
 
         dpc->function = function;
         dpc->context = context;
@@ -747,7 +747,7 @@ static acpi_status __acpi_os_execute(acpi_execute_type type,
                 status = AE_ERROR;
                 kfree(dpc);
         }
-        return_ACPI_STATUS(status);
+        return status;
 }
 
 acpi_status acpi_os_execute(acpi_execute_type type,
diff --git a/drivers/acpi/parser/Makefile b/drivers/acpi/parser/Makefile
deleted file mode 100644
index db24ee09cf11..000000000000
--- a/drivers/acpi/parser/Makefile
+++ /dev/null
@@ -1,8 +0,0 @@
-#
-# Makefile for all Linux ACPI interpreter subdirectories
-#
-
-obj-y := psargs.o    psparse.o  psloop.o pstree.o   pswalk.o  \
-         psopcode.o  psscope.o  psutils.o  psxface.o
-
-EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/pci_bind.c b/drivers/acpi/pci_bind.c
index 4b252ea0e952..95650f83ce2e 100644
--- a/drivers/acpi/pci_bind.c
+++ b/drivers/acpi/pci_bind.c
@@ -99,7 +99,7 @@ acpi_status acpi_get_pci_id(acpi_handle handle, struct acpi_pci_id *id)
          */
 
         ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                          "Device %s has PCI address %02x:%02x:%02x.%02x\n",
+                          "Device %s has PCI address %04x:%02x:%02x.%d\n",
                           acpi_device_bid(device), id->segment, id->bus,
                           id->device, id->function));
 
@@ -111,12 +111,11 @@ EXPORT_SYMBOL(acpi_get_pci_id);
 int acpi_pci_bind(struct acpi_device *device)
 {
         int result = 0;
-        acpi_status status = AE_OK;
-        struct acpi_pci_data *data = NULL;
-        struct acpi_pci_data *pdata = NULL;
-        char *pathname = NULL;
-        struct acpi_buffer buffer = { 0, NULL };
-        acpi_handle handle = NULL;
+        acpi_status status;
+        struct acpi_pci_data *data;
+        struct acpi_pci_data *pdata;
+        struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+        acpi_handle handle;
         struct pci_dev *dev;
         struct pci_bus *bus;
 
@@ -124,21 +123,18 @@ int acpi_pci_bind(struct acpi_device *device)
         if (!device || !device->parent)
                 return -EINVAL;
 
-        pathname = kzalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
-        if (!pathname)
-                return -ENOMEM;
-        buffer.length = ACPI_PATHNAME_MAX;
-        buffer.pointer = pathname;
-
         data = kzalloc(sizeof(struct acpi_pci_data), GFP_KERNEL);
-        if (!data) {
-                kfree(pathname);
+        if (!data)
                 return -ENOMEM;
+
+        status = acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
+        if (ACPI_FAILURE(status)) {
+                kfree(data);
+                return -ENODEV;
         }
 
-        acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
         ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Binding PCI device [%s]...\n",
-                          pathname));
+                          (char *)buffer.pointer));
 
         /* 
          * Segment & Bus
@@ -166,7 +162,7 @@ int acpi_pci_bind(struct acpi_device *device)
         data->id.device = device->pnp.bus_address >> 16;
         data->id.function = device->pnp.bus_address & 0xFFFF;
 
-        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "...to %02x:%02x:%02x.%02x\n",
+        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "...to %04x:%02x:%02x.%d\n",
                           data->id.segment, data->id.bus, data->id.device,
                           data->id.function));
 
@@ -196,7 +192,7 @@ int acpi_pci_bind(struct acpi_device *device)
         }
         if (!data->dev) {
                 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                                  "Device %02x:%02x:%02x.%02x not present in PCI namespace\n",
+                                  "Device %04x:%02x:%02x.%d not present in PCI namespace\n",
                                   data->id.segment, data->id.bus,
                                   data->id.device, data->id.function));
                 result = -ENODEV;
@@ -204,7 +200,7 @@ int acpi_pci_bind(struct acpi_device *device)
         }
         if (!data->dev->bus) {
                 printk(KERN_ERR PREFIX
-                            "Device %02x:%02x:%02x.%02x has invalid 'bus' field\n",
+                            "Device %04x:%02x:%02x.%d has invalid 'bus' field\n",
                             data->id.segment, data->id.bus,
                             data->id.device, data->id.function);
                 result = -ENODEV;
@@ -219,7 +215,7 @@ int acpi_pci_bind(struct acpi_device *device)
          */
         if (data->dev->subordinate) {
                 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                                  "Device %02x:%02x:%02x.%02x is a PCI bridge\n",
+                                  "Device %04x:%02x:%02x.%d is a PCI bridge\n",
                                   data->id.segment, data->id.bus,
                                   data->id.device, data->id.function));
                 data->bus = data->dev->subordinate;
@@ -262,7 +258,7 @@ int acpi_pci_bind(struct acpi_device *device)
         }
 
       end:
-        kfree(pathname);
+        kfree(buffer.pointer);
         if (result)
                 kfree(data);
 
@@ -272,25 +268,21 @@ int acpi_pci_bind(struct acpi_device *device)
 static int acpi_pci_unbind(struct acpi_device *device)
 {
         int result = 0;
-        acpi_status status = AE_OK;
-        struct acpi_pci_data *data = NULL;
-        char *pathname = NULL;
-        struct acpi_buffer buffer = { 0, NULL };
+        acpi_status status;
+        struct acpi_pci_data *data;
+        struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 
 
         if (!device || !device->parent)
                 return -EINVAL;
 
-        pathname = kzalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
-        if (!pathname)
-                return -ENOMEM;
+        status = acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
+        if (ACPI_FAILURE(status))
+                return -ENODEV;
 
-        buffer.length = ACPI_PATHNAME_MAX;
-        buffer.pointer = pathname;
-        acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
         ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unbinding PCI device [%s]...\n",
-                          pathname));
-        kfree(pathname);
+                          (char *) buffer.pointer));
+        kfree(buffer.pointer);
 
         status =
             acpi_get_data(device->handle, acpi_pci_data_handler,
@@ -322,50 +314,44 @@ acpi_pci_bind_root(struct acpi_device *device,
                    struct acpi_pci_id *id, struct pci_bus *bus)
 {
         int result = 0;
-        acpi_status status = AE_OK;
+        acpi_status status;
         struct acpi_pci_data *data = NULL;
-        char *pathname = NULL;
-        struct acpi_buffer buffer = { 0, NULL };
-
-        pathname = kzalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
-        if (!pathname)
-                return -ENOMEM;
-
-        buffer.length = ACPI_PATHNAME_MAX;
-        buffer.pointer = pathname;
+        struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 
         if (!device || !id || !bus) {
-                kfree(pathname);
                 return -EINVAL;
         }
 
         data = kzalloc(sizeof(struct acpi_pci_data), GFP_KERNEL);
-        if (!data) {
-                kfree(pathname);
+        if (!data)
                 return -ENOMEM;
-        }
 
         data->id = *id;
         data->bus = bus;
         device->ops.bind = acpi_pci_bind;
         device->ops.unbind = acpi_pci_unbind;
 
-        acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
+        status = acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
+        if (ACPI_FAILURE(status)) {
+                kfree (data);
+                return -ENODEV;
+        }
 
         ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Binding PCI root bridge [%s] to "
-                          "%02x:%02x\n", pathname, id->segment, id->bus));
+                        "%04x:%02x\n", (char *)buffer.pointer,
+                        id->segment, id->bus));
 
         status = acpi_attach_data(device->handle, acpi_pci_data_handler, data);
         if (ACPI_FAILURE(status)) {
                 ACPI_EXCEPTION((AE_INFO, status,
                                 "Unable to attach ACPI-PCI context to device %s",
-                                pathname));
+                                (char *)buffer.pointer));
                 result = -ENODEV;
                 goto end;
         }
 
       end:
-        kfree(pathname);
+        kfree(buffer.pointer);
         if (result != 0)
                 kfree(data);
 
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index bf79d83bdfbb..891bdf6679f3 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -4,6 +4,8 @@
  *  Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
  *  Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
  *  Copyright (C) 2002       Dominik Brodowski <devel@brodo.de>
+ *  (c) Copyright 2008 Hewlett-Packard Development Company, L.P.
+ *      Bjorn Helgaas <bjorn.helgaas@hp.com>
  *
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  *
@@ -41,29 +43,36 @@
 #define _COMPONENT              ACPI_PCI_COMPONENT
 ACPI_MODULE_NAME("pci_irq");
 
-static struct acpi_prt_list acpi_prt;
+struct acpi_prt_entry {
+        struct list_head        list;
+        struct acpi_pci_id      id;
+        u8                      pin;
+        acpi_handle             link;
+        u32                     index;          /* GSI, or link _CRS index */
+};
+
+static LIST_HEAD(acpi_prt_list);
 static DEFINE_SPINLOCK(acpi_prt_lock);
 
+static inline char pin_name(int pin)
+{
+        return 'A' + pin - 1;
+}
+
 /* --------------------------------------------------------------------------
                          PCI IRQ Routing Table (PRT) Support
    -------------------------------------------------------------------------- */
 
-static struct acpi_prt_entry *acpi_pci_irq_find_prt_entry(int segment,
-                                                          int bus,
-                                                          int device, int pin)
+static struct acpi_prt_entry *acpi_pci_irq_find_prt_entry(struct pci_dev *dev,
+                                                          int pin)
 {
-        struct acpi_prt_entry *entry = NULL;
-
-        if (!acpi_prt.count)
-                return NULL;
+        struct acpi_prt_entry *entry;
+        int segment = pci_domain_nr(dev->bus);
+        int bus = dev->bus->number;
+        int device = PCI_SLOT(dev->devfn);
 
-        /*
-         * Parse through all PRT entries looking for a match on the specified
-         * PCI device's segment, bus, device, and pin (don't care about func).
-         *
-         */
         spin_lock(&acpi_prt_lock);
-        list_for_each_entry(entry, &acpi_prt.entries, node) {
+        list_for_each_entry(entry, &acpi_prt_list, list) {
                 if ((segment == entry->id.segment)
                     && (bus == entry->id.bus)
                     && (device == entry->id.device)
@@ -72,7 +81,6 @@ static struct acpi_prt_entry *acpi_pci_irq_find_prt_entry(int segment,
                         return entry;
                 }
         }
-
         spin_unlock(&acpi_prt_lock);
         return NULL;
 }
@@ -124,25 +132,27 @@ struct prt_quirk {
         char                    *actual_source;
 };
 
+#define PCI_INTX_PIN(c)         (c - 'A' + 1)
+
 /*
  * These systems have incorrect _PRT entries.  The BIOS claims the PCI
  * interrupt at the listed segment/bus/device/pin is connected to the first
  * link device, but it is actually connected to the second.
  */
 static struct prt_quirk prt_quirks[] = {
-        { medion_md9580, 0, 0, 9, 'A',
+        { medion_md9580, 0, 0, 9, PCI_INTX_PIN('A'),
                 "\\_SB_.PCI0.ISA_.LNKA",
                 "\\_SB_.PCI0.ISA_.LNKB"},
-        { dell_optiplex, 0, 0, 0xd, 'A',
+        { dell_optiplex, 0, 0, 0xd, PCI_INTX_PIN('A'),
                 "\\_SB_.LNKB",
                 "\\_SB_.LNKA"},
-        { hp_t5710, 0, 0, 1, 'A',
+        { hp_t5710, 0, 0, 1, PCI_INTX_PIN('A'),
                 "\\_SB_.PCI0.LNK1",
                 "\\_SB_.PCI0.LNK3"},
 };
 
-static void
-do_prt_fixups(struct acpi_prt_entry *entry, struct acpi_pci_routing_table *prt)
+static void do_prt_fixups(struct acpi_prt_entry *entry,
+                          struct acpi_pci_routing_table *prt)
 {
         int i;
         struct prt_quirk *quirk;
@@ -158,42 +168,43 @@ do_prt_fixups(struct acpi_prt_entry *entry, struct acpi_pci_routing_table *prt)
                     entry->id.segment == quirk->segment &&
                     entry->id.bus == quirk->bus &&
                     entry->id.device == quirk->device &&
-                    entry->pin + 'A' == quirk->pin &&
+                    entry->pin == quirk->pin &&
                     !strcmp(prt->source, quirk->source) &&
                     strlen(prt->source) >= strlen(quirk->actual_source)) {
                         printk(KERN_WARNING PREFIX "firmware reports "
                                 "%04x:%02x:%02x PCI INT %c connected to %s; "
                                 "changing to %s\n",
                                 entry->id.segment, entry->id.bus,
-                                entry->id.device, 'A' + entry->pin,
+                                entry->id.device, pin_name(entry->pin),
                                 prt->source, quirk->actual_source);
                         strcpy(prt->source, quirk->actual_source);
                 }
         }
 }
 
-static int
-acpi_pci_irq_add_entry(acpi_handle handle,
-                       int segment, int bus, struct acpi_pci_routing_table *prt)
+static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus,
+                                  struct acpi_pci_routing_table *prt)
 {
-        struct acpi_prt_entry *entry = NULL;
-
-
-        if (!prt)
-                return -EINVAL;
+        struct acpi_prt_entry *entry;
 
         entry = kzalloc(sizeof(struct acpi_prt_entry), GFP_KERNEL);
         if (!entry)
                 return -ENOMEM;
 
+        /*
+         * Note that the _PRT uses 0=INTA, 1=INTB, etc, while PCI uses
+         * 1=INTA, 2=INTB.  We use the PCI encoding throughout, so convert
+         * it here.
+         */
         entry->id.segment = segment;
         entry->id.bus = bus;
         entry->id.device = (prt->address >> 16) & 0xFFFF;
-        entry->id.function = prt->address & 0xFFFF;
-        entry->pin = prt->pin;
+        entry->pin = prt->pin + 1;
 
         do_prt_fixups(entry, prt);
 
+        entry->index = prt->source_index;
+
         /*
          * Type 1: Dynamic
          * ---------------
@@ -207,10 +218,9 @@ acpi_pci_irq_add_entry(acpi_handle handle,
          *       (e.g. exists somewhere 'below' this _PRT entry in the ACPI
          *       namespace).
          */
-        if (prt->source[0]) {
-                acpi_get_handle(handle, prt->source, &entry->link.handle);
-                entry->link.index = prt->source_index;
-        }
+        if (prt->source[0])
+                acpi_get_handle(handle, prt->source, &entry->link);
+
         /*
          * Type 2: Static
          * --------------
@@ -218,84 +228,38 @@ acpi_pci_irq_add_entry(acpi_handle handle,
          * the IRQ value, which is hardwired to specific interrupt inputs on
          * the interrupt controller.
          */
-        else
-                entry->link.index = prt->source_index;
 
         ACPI_DEBUG_PRINT_RAW((ACPI_DB_INFO,
-                              "      %02X:%02X:%02X[%c] -> %s[%d]\n",
+                              "      %04x:%02x:%02x[%c] -> %s[%d]\n",
                               entry->id.segment, entry->id.bus,
-                              entry->id.device, ('A' + entry->pin), prt->source,
-                              entry->link.index));
+                              entry->id.device, pin_name(entry->pin),
+                              prt->source, entry->index));
 
         spin_lock(&acpi_prt_lock);
-        list_add_tail(&entry->node, &acpi_prt.entries);
-        acpi_prt.count++;
+        list_add_tail(&entry->list, &acpi_prt_list);
         spin_unlock(&acpi_prt_lock);
 
         return 0;
 }
 
-static void
-acpi_pci_irq_del_entry(int segment, int bus, struct acpi_prt_entry *entry)
-{
-        if (segment == entry->id.segment && bus == entry->id.bus) {
-                acpi_prt.count--;
-                list_del(&entry->node);
-                kfree(entry);
-        }
-}
-
 int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
 {
-        acpi_status status = AE_OK;
-        char *pathname = NULL;
-        struct acpi_buffer buffer = { 0, NULL };
-        struct acpi_pci_routing_table *prt = NULL;
-        struct acpi_pci_routing_table *entry = NULL;
-        static int first_time = 1;
-
-
-        pathname = kzalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
-        if (!pathname)
-                return -ENOMEM;
-
-        if (first_time) {
-                acpi_prt.count = 0;
-                INIT_LIST_HEAD(&acpi_prt.entries);
-                first_time = 0;
-        }
-
-        /* 
-         * NOTE: We're given a 'handle' to the _PRT object's parent device
-         *       (either a PCI root bridge or PCI-PCI bridge).
-         */
+        acpi_status status;
+        struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+        struct acpi_pci_routing_table *entry;
 
-        buffer.length = ACPI_PATHNAME_MAX;
-        buffer.pointer = pathname;
-        acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
+        /* 'handle' is the _PRT's parent (root bridge or PCI-PCI bridge) */
+        status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
+        if (ACPI_FAILURE(status))
+                return -ENODEV;
 
         printk(KERN_DEBUG "ACPI: PCI Interrupt Routing Table [%s._PRT]\n",
-               pathname);
+               (char *) buffer.pointer);
 
-        /* 
-         * Evaluate this _PRT and add its entries to our global list (acpi_prt).
-         */
+        kfree(buffer.pointer);
 
-        buffer.length = 0;
+        buffer.length = ACPI_ALLOCATE_BUFFER;
         buffer.pointer = NULL;
-        kfree(pathname);
-        status = acpi_get_irq_routing_table(handle, &buffer);
-        if (status != AE_BUFFER_OVERFLOW) {
-                ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRT [%s]",
-                                acpi_format_exception(status)));
-                return -ENODEV;
-        }
-
-        prt = kzalloc(buffer.length, GFP_KERNEL);
-        if (!prt) {
-                return -ENOMEM;
-        }
-        buffer.pointer = prt;
 
         status = acpi_get_irq_routing_table(handle, &buffer);
         if (ACPI_FAILURE(status)) {
@@ -305,36 +269,30 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
                 return -ENODEV;
         }
 
-        entry = prt;
-
+        entry = buffer.pointer;
         while (entry && (entry->length > 0)) {
                 acpi_pci_irq_add_entry(handle, segment, bus, entry);
                 entry = (struct acpi_pci_routing_table *)
                     ((unsigned long)entry + entry->length);
         }
 
-        kfree(prt);
-
+        kfree(buffer.pointer);
         return 0;
 }
 
 void acpi_pci_irq_del_prt(int segment, int bus)
 {
-        struct list_head *node = NULL, *n = NULL;
-        struct acpi_prt_entry *entry = NULL;
-
-        if (!acpi_prt.count) {
-                return;
-        }
+        struct acpi_prt_entry *entry, *tmp;
 
         printk(KERN_DEBUG
-               "ACPI: Delete PCI Interrupt Routing Table for %x:%x\n", segment,
-               bus);
+               "ACPI: Delete PCI Interrupt Routing Table for %04x:%02x\n",
+               segment, bus);
         spin_lock(&acpi_prt_lock);
-        list_for_each_safe(node, n, &acpi_prt.entries) {
-                entry = list_entry(node, struct acpi_prt_entry, node);
-
-                acpi_pci_irq_del_entry(segment, bus, entry);
+        list_for_each_entry_safe(entry, tmp, &acpi_prt_list, list) {
+                if (segment == entry->id.segment && bus == entry->id.bus) {
+                        list_del(&entry->list);
+                        kfree(entry);
+                }
         }
         spin_unlock(&acpi_prt_lock);
 }
@@ -342,162 +300,26 @@ void acpi_pci_irq_del_prt(int segment, int bus)
 /* --------------------------------------------------------------------------
                           PCI Interrupt Routing Support
    -------------------------------------------------------------------------- */
-typedef int (*irq_lookup_func) (struct acpi_prt_entry *, int *, int *, char **);
-
-static int
-acpi_pci_allocate_irq(struct acpi_prt_entry *entry,
-                      int *triggering, int *polarity, char **link)
-{
-        int irq;
-
-
-        if (entry->link.handle) {
-                irq = acpi_pci_link_allocate_irq(entry->link.handle,
-                                                 entry->link.index, triggering,
-                                                 polarity, link);
-                if (irq < 0) {
-                        printk(KERN_WARNING PREFIX
-                                      "Invalid IRQ link routing entry\n");
-                        return -1;
-                }
-        } else {
-                irq = entry->link.index;
-                *triggering = ACPI_LEVEL_SENSITIVE;
-                *polarity = ACPI_ACTIVE_LOW;
-        }
-
-        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found IRQ %d\n", irq));
-        return irq;
-}
-
-static int
-acpi_pci_free_irq(struct acpi_prt_entry *entry,
-                  int *triggering, int *polarity, char **link)
-{
-        int irq;
-
-        if (entry->link.handle) {
-                irq = acpi_pci_link_free_irq(entry->link.handle);
-        } else {
-                irq = entry->link.index;
-        }
-        return irq;
-}
-
-#ifdef CONFIG_X86_IO_APIC
-extern int noioapicquirk;
-
-static int bridge_has_boot_interrupt_variant(struct pci_bus *bus)
+static struct acpi_prt_entry *acpi_pci_irq_lookup(struct pci_dev *dev, int pin)
 {
-        struct pci_bus *bus_it;
-
-        for (bus_it = bus ; bus_it ; bus_it = bus_it->parent) {
-                if (!bus_it->self)
-                        return 0;
-
-                printk(KERN_INFO "vendor=%04x device=%04x\n", bus_it->self->vendor,
-                                bus_it->self->device);
-
-                if (bus_it->self->irq_reroute_variant)
-                        return bus_it->self->irq_reroute_variant;
-        }
-        return 0;
-}
-#endif /* CONFIG_X86_IO_APIC */
-
-/*
- * acpi_pci_irq_lookup
- * success: return IRQ >= 0
- * failure: return -1
- */
-static int
-acpi_pci_irq_lookup(struct pci_bus *bus,
-                    int device,
-                    int pin,
-                    int *triggering,
-                    int *polarity, char **link, irq_lookup_func func)
-{
-        struct acpi_prt_entry *entry = NULL;
-        int segment = pci_domain_nr(bus);
-        int bus_nr = bus->number;
-        int ret;
-
-
-        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                          "Searching for PRT entry for %02x:%02x:%02x[%c]\n",
-                          segment, bus_nr, device, ('A' + pin)));
-
-        entry = acpi_pci_irq_find_prt_entry(segment, bus_nr, device, pin);
-        if (!entry) {
-                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "PRT entry not found\n"));
-                return -1;
-        }
-
-        ret = func(entry, triggering, polarity, link);
-
-#ifdef CONFIG_X86_IO_APIC
-        /*
-         * Some chipsets (e.g. intel 6700PXH) generate a legacy INTx when the
-         * IRQ entry in the chipset's IO-APIC is masked (as, e.g. the RT kernel
-         * does during interrupt handling). When this INTx generation cannot be
-         * disabled, we reroute these interrupts to their legacy equivalent to
-         * get rid of spurious interrupts.
-         */
-        if (!noioapicquirk) {
-                switch (bridge_has_boot_interrupt_variant(bus)) {
-                case 0:
-                        /* no rerouting necessary */
-                        break;
-
-                case INTEL_IRQ_REROUTE_VARIANT:
-                        /*
-                         * Remap according to INTx routing table in 6700PXH
-                         * specs, intel order number 302628-002, section
-                         * 2.15.2. Other chipsets (80332, ...) have the same
-                         * mapping and are handled here as well.
-                         */
-                        printk(KERN_INFO "pci irq %d -> rerouted to legacy "
-                                         "irq %d\n", ret, (ret % 4) + 16);
-                        ret = (ret % 4) + 16;
-                        break;
-
-                default:
-                        printk(KERN_INFO "not rerouting irq %d to legacy irq: "
-                                         "unknown mapping\n", ret);
-                        break;
-                }
+        struct acpi_prt_entry *entry;
+        struct pci_dev *bridge;
+        u8 bridge_pin, orig_pin = pin;
+
+        entry = acpi_pci_irq_find_prt_entry(dev, pin);
+        if (entry) {
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %s[%c] _PRT entry\n",
+                                  pci_name(dev), pin_name(pin)));
+                return entry;
         }
-#endif /* CONFIG_X86_IO_APIC */
-
-        return ret;
-}
-
-/*
- * acpi_pci_irq_derive
- * success: return IRQ >= 0
- * failure: return < 0
- */
-static int
-acpi_pci_irq_derive(struct pci_dev *dev,
-                    int pin,
-                    int *triggering,
-                    int *polarity, char **link, irq_lookup_func func)
-{
-        struct pci_dev *bridge = dev;
-        int irq = -1;
-        u8 bridge_pin = 0, orig_pin = pin;
-
-
-        if (!dev)
-                return -EINVAL;
 
         /* 
          * Attempt to derive an IRQ for this device from a parent bridge's
          * PCI interrupt routing entry (eg. yenta bridge and add-in card bridge).
          */
-        while (irq < 0 && bridge->bus->self) {
-                pin = (pin + PCI_SLOT(bridge->devfn)) % 4;
-                bridge = bridge->bus->self;
+        bridge = dev->bus->self;
+        while (bridge) {
+                pin = (((pin - 1) + PCI_SLOT(dev->devfn)) % 4) + 1;
 
                 if ((bridge->class >> 8) == PCI_CLASS_BRIDGE_CARDBUS) {
                         /* PC card has the same IRQ as its cardbridge */
@@ -506,50 +328,40 @@ acpi_pci_irq_derive(struct pci_dev *dev,
                                 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
                                                   "No interrupt pin configured for device %s\n",
                                                   pci_name(bridge)));
-                                return -1;
+                                return NULL;
                         }
-                        /* Pin is from 0 to 3 */
-                        bridge_pin--;
                         pin = bridge_pin;
                 }
 
-                irq = acpi_pci_irq_lookup(bridge->bus, PCI_SLOT(bridge->devfn),
-                                          pin, triggering, polarity,
-                                          link, func);
-        }
+                entry = acpi_pci_irq_find_prt_entry(bridge, pin);
+                if (entry) {
+                        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                                         "Derived GSI for %s INT %c from %s\n",
+                                         pci_name(dev), pin_name(orig_pin),
+                                         pci_name(bridge)));
+                        return entry;
+                }
 
-        if (irq < 0) {
-                dev_warn(&dev->dev, "can't derive routing for PCI INT %c\n",
-                         'A' + orig_pin);
-                return -1;
+                dev = bridge;
+                bridge = dev->bus->self;
         }
 
-        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Derive IRQ %d for device %s from %s\n",
-                          irq, pci_name(dev), pci_name(bridge)));
-
-        return irq;
+        dev_warn(&dev->dev, "can't derive routing for PCI INT %c\n",
+                 pin_name(orig_pin));
+        return NULL;
 }
 
-/*
- * acpi_pci_irq_enable
- * success: return 0
- * failure: return < 0
- */
-
 int acpi_pci_irq_enable(struct pci_dev *dev)
 {
-        int irq = 0;
-        u8 pin = 0;
+        struct acpi_prt_entry *entry;
+        int gsi;
+        u8 pin;
         int triggering = ACPI_LEVEL_SENSITIVE;
         int polarity = ACPI_ACTIVE_LOW;
         char *link = NULL;
         char link_desc[16];
         int rc;
 
-
-        if (!dev)
-                return -EINVAL;
-
         pin = dev->pin;
         if (!pin) {
                 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@@ -557,31 +369,9 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
                                   pci_name(dev)));
                 return 0;
         }
-        pin--;
-
-        if (!dev->bus) {
-                dev_err(&dev->dev, "invalid (NULL) 'bus' field\n");
-                return -ENODEV;
-        }
-
-        /* 
-         * First we check the PCI IRQ routing table (PRT) for an IRQ.  PRT
-         * values override any BIOS-assigned IRQs set during boot.
-         */
-        irq = acpi_pci_irq_lookup(dev->bus, PCI_SLOT(dev->devfn), pin,
-                                  &triggering, &polarity, &link,
-                                  acpi_pci_allocate_irq);
-
-        /*
-         * If no PRT entry was found, we'll try to derive an IRQ from the
-         * device's parent bridge.
-         */
-        if (irq < 0)
-                irq = acpi_pci_irq_derive(dev, pin, &triggering,
-                                          &polarity, &link,
-                                          acpi_pci_allocate_irq);
 
-        if (irq < 0) {
+        entry = acpi_pci_irq_lookup(dev, pin);
+        if (!entry) {
                 /*
                  * IDE legacy mode controller IRQs are magic. Why do compat
                  * extensions always make such a nasty mess.
@@ -590,12 +380,24 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
                                 (dev->class & 0x05) == 0)
                         return 0;
         }
+
+        if (entry) {
+                if (entry->link)
+                        gsi = acpi_pci_link_allocate_irq(entry->link,
+                                                         entry->index,
+                                                         &triggering, &polarity,
+                                                         &link);
+                else
+                        gsi = entry->index;
+        } else
+                gsi = -1;
+
         /*
          * No IRQ known to the ACPI subsystem - maybe the BIOS / 
          * driver reported one, then use it. Exit in any case.
          */
-        if (irq < 0) {
-                dev_warn(&dev->dev, "PCI INT %c: no GSI", 'A' + pin);
+        if (gsi < 0) {
+                dev_warn(&dev->dev, "PCI INT %c: no GSI", pin_name(pin));
                 /* Interrupt Line values above 0xF are forbidden */
                 if (dev->irq > 0 && (dev->irq <= 0xF)) {
                         printk(" - using IRQ %d\n", dev->irq);
@@ -608,10 +410,10 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
                 }
         }
 
-        rc = acpi_register_gsi(irq, triggering, polarity);
+        rc = acpi_register_gsi(gsi, triggering, polarity);
         if (rc < 0) {
                 dev_warn(&dev->dev, "PCI INT %c: failed to register GSI\n",
-                         'A' + pin);
+                         pin_name(pin));
                 return rc;
         }
         dev->irq = rc;
@@ -622,7 +424,7 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
                 link_desc[0] = '\0';
 
         dev_info(&dev->dev, "PCI INT %c%s -> GSI %u (%s, %s) -> IRQ %d\n",
-                 'A' + pin, link_desc, irq,
+                 pin_name(pin), link_desc, gsi,
                  (triggering == ACPI_LEVEL_SENSITIVE) ? "level" : "edge",
                  (polarity == ACPI_ACTIVE_LOW) ? "low" : "high", dev->irq);
 
@@ -636,42 +438,28 @@ void __attribute__ ((weak)) acpi_unregister_gsi(u32 i)
 
 void acpi_pci_irq_disable(struct pci_dev *dev)
 {
-        int gsi = 0;
-        u8 pin = 0;
-        int triggering = ACPI_LEVEL_SENSITIVE;
-        int polarity = ACPI_ACTIVE_LOW;
-
-
-        if (!dev || !dev->bus)
-                return;
+        struct acpi_prt_entry *entry;
+        int gsi;
+        u8 pin;
 
         pin = dev->pin;
         if (!pin)
                 return;
-        pin--;
 
-        /*
-         * First we check the PCI IRQ routing table (PRT) for an IRQ.
-         */
-        gsi = acpi_pci_irq_lookup(dev->bus, PCI_SLOT(dev->devfn), pin,
-                                  &triggering, &polarity, NULL,
-                                  acpi_pci_free_irq);
-        /*
-         * If no PRT entry was found, we'll try to derive an IRQ from the
-         * device's parent bridge.
-         */
-        if (gsi < 0)
-                gsi = acpi_pci_irq_derive(dev, pin,
-                                          &triggering, &polarity, NULL,
-                                          acpi_pci_free_irq);
-        if (gsi < 0)
+        entry = acpi_pci_irq_lookup(dev, pin);
+        if (!entry)
                 return;
 
+        if (entry->link)
+                gsi = acpi_pci_link_free_irq(entry->link);
+        else
+                gsi = entry->index;
+
         /*
          * TBD: It might be worth clearing dev->irq by magic constant
          * (e.g. PCI_UNDEFINED_IRQ).
          */
 
-        dev_info(&dev->dev, "PCI INT %c disabled\n", 'A' + pin);
+        dev_info(&dev->dev, "PCI INT %c disabled\n", pin_name(pin));
         acpi_unregister_gsi(gsi);
 }
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index e52ad91ce2dc..1c6e73c7865e 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -796,10 +796,6 @@ static int irqrouter_resume(struct sys_device *dev)
         struct list_head *node = NULL;
         struct acpi_pci_link *link = NULL;
 
-
-        /* Make sure SCI is enabled again (Apple firmware bug?) */
-        acpi_set_register(ACPI_BITREG_SCI_ENABLE, 1);
-
         list_for_each(node, &acpi_link.entries) {
                 link = list_entry(node, struct acpi_pci_link, node);
                 if (!link) {
@@ -912,7 +908,7 @@ static int __init acpi_irq_nobalance_set(char *str)
 
 __setup("acpi_irq_nobalance", acpi_irq_nobalance_set);
 
-int __init acpi_irq_balance_set(char *str)
+static int __init acpi_irq_balance_set(char *str)
 {
         acpi_irq_balance = 1;
         return 1;
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index bb7d50dd2818..c926e7d4a0d6 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -139,6 +139,8 @@ static int acpi_power_get_state(acpi_handle handle, int *state)
 {
         acpi_status status = AE_OK;
         unsigned long long sta = 0;
+        char node_name[5];
+        struct acpi_buffer buffer = { sizeof(node_name), node_name };
 
 
         if (!handle || !state)
@@ -151,8 +153,10 @@ static int acpi_power_get_state(acpi_handle handle, int *state)
         *state = (sta & 0x01)?ACPI_POWER_RESOURCE_STATE_ON:
                               ACPI_POWER_RESOURCE_STATE_OFF;
 
+        acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer);
+
         ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] is %s\n",
-                          acpi_ut_get_node_name(handle),
+                          node_name,
                                 *state ? "on" : "off"));
 
         return 0;
diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/proc.c
index 4dbc2271acf5..428c911dba08 100644
--- a/drivers/acpi/sleep/proc.c
+++ b/drivers/acpi/proc.c
@@ -28,8 +28,6 @@ static int acpi_system_sleep_seq_show(struct seq_file *seq, void *offset)
 {
         int i;
 
-        ACPI_FUNCTION_TRACE("acpi_system_sleep_seq_show");
-
         for (i = 0; i <= ACPI_STATE_S5; i++) {
                 if (sleep_states[i]) {
                         seq_printf(seq, "S%d ", i);
@@ -86,49 +84,44 @@ acpi_system_write_sleep(struct file *file,
 
 #ifdef  HAVE_ACPI_LEGACY_ALARM
 
+static u32 cmos_bcd_read(int offset, int rtc_control);
+
 static int acpi_system_alarm_seq_show(struct seq_file *seq, void *offset)
 {
         u32 sec, min, hr;
         u32 day, mo, yr, cent = 0;
+        u32 today = 0;
         unsigned char rtc_control = 0;
         unsigned long flags;
 
-        ACPI_FUNCTION_TRACE("acpi_system_alarm_seq_show");
-
         spin_lock_irqsave(&rtc_lock, flags);
 
-        sec = CMOS_READ(RTC_SECONDS_ALARM);
-        min = CMOS_READ(RTC_MINUTES_ALARM);
-        hr = CMOS_READ(RTC_HOURS_ALARM);
         rtc_control = CMOS_READ(RTC_CONTROL);
+        sec = cmos_bcd_read(RTC_SECONDS_ALARM, rtc_control);
+        min = cmos_bcd_read(RTC_MINUTES_ALARM, rtc_control);
+        hr = cmos_bcd_read(RTC_HOURS_ALARM, rtc_control);
 
         /* If we ever get an FACP with proper values... */
-        if (acpi_gbl_FADT.day_alarm)
+        if (acpi_gbl_FADT.day_alarm) {
                 /* ACPI spec: only low 6 its should be cared */
                 day = CMOS_READ(acpi_gbl_FADT.day_alarm) & 0x3F;
-        else
-                day = CMOS_READ(RTC_DAY_OF_MONTH);
+                if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD)
+                        day = bcd2bin(day);
+        } else
+                day = cmos_bcd_read(RTC_DAY_OF_MONTH, rtc_control);
         if (acpi_gbl_FADT.month_alarm)
-                mo = CMOS_READ(acpi_gbl_FADT.month_alarm);
-        else
-                mo = CMOS_READ(RTC_MONTH);
+                mo = cmos_bcd_read(acpi_gbl_FADT.month_alarm, rtc_control);
+        else {
+                mo = cmos_bcd_read(RTC_MONTH, rtc_control);
+                today = cmos_bcd_read(RTC_DAY_OF_MONTH, rtc_control);
+        }
         if (acpi_gbl_FADT.century)
-                cent = CMOS_READ(acpi_gbl_FADT.century);
+                cent = cmos_bcd_read(acpi_gbl_FADT.century, rtc_control);
 
-        yr = CMOS_READ(RTC_YEAR);
+        yr = cmos_bcd_read(RTC_YEAR, rtc_control);
 
         spin_unlock_irqrestore(&rtc_lock, flags);
 
-        if (!(rtc_control & RTC_DM_BINARY) || RTC_ALWAYS_BCD) {
-                sec = bcd2bin(sec);
-                min = bcd2bin(min);
-                hr = bcd2bin(hr);
-                day = bcd2bin(day);
-                mo = bcd2bin(mo);
-                yr = bcd2bin(yr);
-                cent = bcd2bin(cent);
-        }
-
         /* we're trusting the FADT (see above) */
         if (!acpi_gbl_FADT.century)
                 /* If we're not trusting the FADT, we should at least make it
@@ -153,6 +146,20 @@ static int acpi_system_alarm_seq_show(struct seq_file *seq, void *offset)
         else
                 yr += cent * 100;
 
+        /*
+         * Show correct dates for alarms up to a month into the future.
+         * This solves issues for nearly all situations with the common
+         * 30-day alarm clocks in PC hardware.
+         */
+        if (day < today) {
+                if (mo < 12) {
+                        mo += 1;
+                } else {
+                        mo = 1;
+                        yr += 1;
+                }
+        }
+
         seq_printf(seq, "%4.4u-", yr);
         (mo > 12) ? seq_puts(seq, "**-") : seq_printf(seq, "%2.2u-", mo);
         (day > 31) ? seq_puts(seq, "** ") : seq_printf(seq, "%2.2u ", day);
@@ -227,13 +234,11 @@ acpi_system_write_alarm(struct file *file,
         int adjust = 0;
         unsigned char rtc_control = 0;
 
-        ACPI_FUNCTION_TRACE("acpi_system_write_alarm");
-
         if (count > sizeof(alarm_string) - 1)
-                return_VALUE(-EINVAL);
+                return -EINVAL;
 
         if (copy_from_user(alarm_string, buffer, count))
-                return_VALUE(-EFAULT);
+                return -EFAULT;
 
         alarm_string[count] = '\0';
 
@@ -334,7 +339,7 @@ acpi_system_write_alarm(struct file *file,
 
         result = 0;
       end:
-        return_VALUE(result ? result : count);
+        return result ? result : count;
 }
 #endif                          /* HAVE_ACPI_LEGACY_ALARM */
 
diff --git a/drivers/acpi/reboot.c b/drivers/acpi/reboot.c
index a6b662c00b67..93f91142d7ad 100644
--- a/drivers/acpi/reboot.c
+++ b/drivers/acpi/reboot.c
@@ -42,7 +42,7 @@ void acpi_reboot(void)
         case ACPI_ADR_SPACE_SYSTEM_MEMORY:
         case ACPI_ADR_SPACE_SYSTEM_IO:
                 printk(KERN_DEBUG "ACPI MEMORY or I/O RESET_REG.\n");
-                acpi_hw_low_level_write(8, reset_value, rr);
+                acpi_reset();
                 break;
         }
         /* Wait ten seconds */
diff --git a/drivers/acpi/resources/Makefile b/drivers/acpi/resources/Makefile
deleted file mode 100644
index 8de4f69dfa09..000000000000
--- a/drivers/acpi/resources/Makefile
+++ /dev/null
@@ -1,10 +0,0 @@
-#
-# Makefile for all Linux ACPI interpreter subdirectories
-#
-
-obj-y := rsaddr.o rscreate.o rsinfo.o rsio.o rslist.o rsmisc.o rsxface.o \
-         rscalc.o  rsirq.o  rsmemory.o  rsutils.o
-
-obj-$(ACPI_FUTURE_USAGE) += rsdump.o
-
-EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c
index e53e590252c0..0619734895b2 100644
--- a/drivers/acpi/sbshc.c
+++ b/drivers/acpi/sbshc.c
@@ -10,7 +10,6 @@
 
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
-#include <acpi/actypes.h>
 #include <linux/wait.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 39b7233c3485..c54d7b6c4066 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -10,7 +10,6 @@
 #include <linux/kthread.h>
 
 #include <acpi/acpi_drivers.h>
-#include <acpi/acinterp.h>      /* for acpi_ex_eisa_id_to_string() */
 
 #define _COMPONENT              ACPI_BUS_COMPONENT
 ACPI_MODULE_NAME("scan");
diff --git a/drivers/acpi/sleep/sleep.h b/drivers/acpi/sleep.h
index cfaf8f5b0a14..cfaf8f5b0a14 100644
--- a/drivers/acpi/sleep/sleep.h
+++ b/drivers/acpi/sleep.h
diff --git a/drivers/acpi/sleep/Makefile b/drivers/acpi/sleep/Makefile
deleted file mode 100644
index f1fb888c2d29..000000000000
--- a/drivers/acpi/sleep/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-obj-y                                   := wakeup.o
-obj-y                                   += main.o
-obj-$(CONFIG_ACPI_SLEEP)                += proc.o
-
-EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 6e4107f82403..391d0358a592 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -192,65 +192,6 @@ static struct attribute_group interrupt_stats_attr_group = {
 };
 static struct kobj_attribute *counter_attrs;
 
-static int count_num_gpes(void)
-{
-        int count = 0;
-        struct acpi_gpe_xrupt_info *gpe_xrupt_info;
-        struct acpi_gpe_block_info *gpe_block;
-        acpi_cpu_flags flags;
-
-        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
-
-        gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
-        while (gpe_xrupt_info) {
-                gpe_block = gpe_xrupt_info->gpe_block_list_head;
-                while (gpe_block) {
-                        count += gpe_block->register_count *
-                            ACPI_GPE_REGISTER_WIDTH;
-                        gpe_block = gpe_block->next;
-                }
-                gpe_xrupt_info = gpe_xrupt_info->next;
-        }
-        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
-
-        return count;
-}
-
-static int get_gpe_device(int index, acpi_handle *handle)
-{
-        struct acpi_gpe_xrupt_info *gpe_xrupt_info;
-        struct acpi_gpe_block_info *gpe_block;
-        acpi_cpu_flags flags;
-        struct acpi_namespace_node *node;
-
-        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
-
-        gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head;
-        while (gpe_xrupt_info) {
-                gpe_block = gpe_xrupt_info->gpe_block_list_head;
-                node = gpe_block->node;
-                while (gpe_block) {
-                        index -= gpe_block->register_count *
-                            ACPI_GPE_REGISTER_WIDTH;
-                        if (index < 0) {
-                                acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
-                                /* return NULL if it's FADT GPE */
-                                if (node->type != ACPI_TYPE_DEVICE)
-                                        *handle = NULL;
-                                else
-                                        *handle = node;
-                                return 0;
-                        }
-                        node = gpe_block->node;
-                        gpe_block = gpe_block->next;
-                }
-                gpe_xrupt_info = gpe_xrupt_info->next;
-        }
-        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
-
-        return -ENODEV;
-}
-
 static void delete_gpe_attr_array(void)
 {
         struct event_counter *tmp = all_counters;
@@ -309,7 +250,7 @@ static int get_status(u32 index, acpi_event_status *status, acpi_handle *handle)
                 goto end;
 
         if (index < num_gpes) {
-                result = get_gpe_device(index, handle);
+                result = acpi_get_gpe_device(index, handle);
                 if (result) {
                         ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
                                 "Invalid GPE 0x%x\n", index));
@@ -436,7 +377,7 @@ void acpi_irq_stats_init(void)
         if (all_counters)
                 return;
 
-        num_gpes = count_num_gpes();
+        num_gpes = acpi_current_gpe_count;
         num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
 
         all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
diff --git a/drivers/acpi/tables/Makefile b/drivers/acpi/tables/Makefile
deleted file mode 100644
index 7385efa61622..000000000000
--- a/drivers/acpi/tables/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-#
-# Makefile for all Linux ACPI interpreter subdirectories
-#
-
-obj-y := tbxface.o tbinstal.o tbutils.o tbfind.o tbfadt.o tbxfroot.o
-
-EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/utilities/Makefile b/drivers/acpi/utilities/Makefile
deleted file mode 100644
index 88eff14c4894..000000000000
--- a/drivers/acpi/utilities/Makefile
+++ /dev/null
@@ -1,9 +0,0 @@
-#
-# Makefile for all Linux ACPI interpreter subdirectories
-#
-
-obj-y := utalloc.o utdebug.o uteval.o utinit.o utmisc.o utxface.o \
-                utcopy.o utdelete.o utglobal.o utmath.o utobject.o \
-                utstate.o utmutex.o utobject.o utcache.o utresrc.o
-
-EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/utilities/utcache.c b/drivers/acpi/utilities/utcache.c
deleted file mode 100644
index 245fa80cf600..000000000000
--- a/drivers/acpi/utilities/utcache.c
+++ /dev/null
@@ -1,314 +0,0 @@
-/******************************************************************************
- *
- * Module Name: utcache - local cache allocation routines
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2008, Intel Corp.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions, and the following disclaimer,
- *    without modification.
- * 2. Redistributions in binary form must reproduce at minimum a disclaimer
- *    substantially similar to the "NO WARRANTY" disclaimer below
- *    ("Disclaimer") and any redistribution must be conditioned upon
- *    including a substantially similar Disclaimer requirement for further
- *    binary redistribution.
- * 3. Neither the names of the above-listed copyright holders nor the names
- *    of any contributors may be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * NO WARRANTY
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- */
-
-#include <acpi/acpi.h>
-
-#define _COMPONENT          ACPI_UTILITIES
-ACPI_MODULE_NAME("utcache")
-#ifdef ACPI_USE_LOCAL_CACHE
-/*******************************************************************************
- *
- * FUNCTION:    acpi_os_create_cache
- *
- * PARAMETERS:  cache_name      - Ascii name for the cache
- *              object_size     - Size of each cached object
- *              max_depth       - Maximum depth of the cache (in objects)
- *              return_cache    - Where the new cache object is returned
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Create a cache object
- *
- ******************************************************************************/
-acpi_status
-acpi_os_create_cache(char *cache_name,
-                     u16 object_size,
-                     u16 max_depth, struct acpi_memory_list ** return_cache)
-{
-        struct acpi_memory_list *cache;
-
-        ACPI_FUNCTION_ENTRY();
-
-        if (!cache_name || !return_cache || (object_size < 16)) {
-                return (AE_BAD_PARAMETER);
-        }
-
-        /* Create the cache object */
-
-        cache = acpi_os_allocate(sizeof(struct acpi_memory_list));
-        if (!cache) {
-                return (AE_NO_MEMORY);
-        }
-
-        /* Populate the cache object and return it */
-
-        ACPI_MEMSET(cache, 0, sizeof(struct acpi_memory_list));
-        cache->link_offset = 8;
-        cache->list_name = cache_name;
-        cache->object_size = object_size;
-        cache->max_depth = max_depth;
-
-        *return_cache = cache;
-        return (AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_os_purge_cache
- *
- * PARAMETERS:  Cache           - Handle to cache object
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Free all objects within the requested cache.
- *
- ******************************************************************************/
-
-acpi_status acpi_os_purge_cache(struct acpi_memory_list * cache)
-{
-        char *next;
-
-        ACPI_FUNCTION_ENTRY();
-
-        if (!cache) {
-                return (AE_BAD_PARAMETER);
-        }
-
-        /* Walk the list of objects in this cache */
-
-        while (cache->list_head) {
-
-                /* Delete and unlink one cached state object */
-
-                next = *(ACPI_CAST_INDIRECT_PTR(char,
-                                                &(((char *)cache->
-                                                   list_head)[cache->
-                                                              link_offset])));
-                ACPI_FREE(cache->list_head);
-
-                cache->list_head = next;
-                cache->current_depth--;
-        }
-
-        return (AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_os_delete_cache
- *
- * PARAMETERS:  Cache           - Handle to cache object
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Free all objects within the requested cache and delete the
- *              cache object.
- *
- ******************************************************************************/
-
-acpi_status acpi_os_delete_cache(struct acpi_memory_list * cache)
-{
-        acpi_status status;
-
-        ACPI_FUNCTION_ENTRY();
-
-        /* Purge all objects in the cache */
-
-        status = acpi_os_purge_cache(cache);
-        if (ACPI_FAILURE(status)) {
-                return (status);
-        }
-
-        /* Now we can delete the cache object */
-
-        ACPI_FREE(cache);
-        return (AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_os_release_object
- *
- * PARAMETERS:  Cache       - Handle to cache object
- *              Object      - The object to be released
- *
- * RETURN:      None
- *
- * DESCRIPTION: Release an object to the specified cache.  If cache is full,
- *              the object is deleted.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_os_release_object(struct acpi_memory_list * cache, void *object)
-{
-        acpi_status status;
-
-        ACPI_FUNCTION_ENTRY();
-
-        if (!cache || !object) {
-                return (AE_BAD_PARAMETER);
-        }
-
-        /* If cache is full, just free this object */
-
-        if (cache->current_depth >= cache->max_depth) {
-                ACPI_FREE(object);
-                ACPI_MEM_TRACKING(cache->total_freed++);
-        }
-
-        /* Otherwise put this object back into the cache */
-
-        else {
-                status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
-                if (ACPI_FAILURE(status)) {
-                        return (status);
-                }
-
-                /* Mark the object as cached */
-
-                ACPI_MEMSET(object, 0xCA, cache->object_size);
-                ACPI_SET_DESCRIPTOR_TYPE(object, ACPI_DESC_TYPE_CACHED);
-
-                /* Put the object at the head of the cache list */
-
-                *(ACPI_CAST_INDIRECT_PTR(char,
-                                         &(((char *)object)[cache->
-                                                            link_offset]))) =
-                    cache->list_head;
-                cache->list_head = object;
-                cache->current_depth++;
-
-                (void)acpi_ut_release_mutex(ACPI_MTX_CACHES);
-        }
-
-        return (AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_os_acquire_object
- *
- * PARAMETERS:  Cache           - Handle to cache object
- *
- * RETURN:      the acquired object.  NULL on error
- *
- * DESCRIPTION: Get an object from the specified cache.  If cache is empty,
- *              the object is allocated.
- *
- ******************************************************************************/
-
-void *acpi_os_acquire_object(struct acpi_memory_list *cache)
-{
-        acpi_status status;
-        void *object;
-
-        ACPI_FUNCTION_NAME(os_acquire_object);
-
-        if (!cache) {
-                return (NULL);
-        }
-
-        status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
-        if (ACPI_FAILURE(status)) {
-                return (NULL);
-        }
-
-        ACPI_MEM_TRACKING(cache->requests++);
-
-        /* Check the cache first */
-
-        if (cache->list_head) {
-
-                /* There is an object available, use it */
-
-                object = cache->list_head;
-                cache->list_head = *(ACPI_CAST_INDIRECT_PTR(char,
-                                                            &(((char *)
-                                                               object)[cache->
-                                                                       link_offset])));
-
-                cache->current_depth--;
-
-                ACPI_MEM_TRACKING(cache->hits++);
-                ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
-                                  "Object %p from %s cache\n", object,
-                                  cache->list_name));
-
-                status = acpi_ut_release_mutex(ACPI_MTX_CACHES);
-                if (ACPI_FAILURE(status)) {
-                        return (NULL);
-                }
-
-                /* Clear (zero) the previously used Object */
-
-                ACPI_MEMSET(object, 0, cache->object_size);
-        } else {
-                /* The cache is empty, create a new object */
-
-                ACPI_MEM_TRACKING(cache->total_allocated++);
-
-#ifdef ACPI_DBG_TRACK_ALLOCATIONS
-                if ((cache->total_allocated - cache->total_freed) >
-                    cache->max_occupied) {
-                        cache->max_occupied =
-                            cache->total_allocated - cache->total_freed;
-                }
-#endif
-
-                /* Avoid deadlock with ACPI_ALLOCATE_ZEROED */
-
-                status = acpi_ut_release_mutex(ACPI_MTX_CACHES);
-                if (ACPI_FAILURE(status)) {
-                        return (NULL);
-                }
-
-                object = ACPI_ALLOCATE_ZEROED(cache->object_size);
-                if (!object) {
-                        return (NULL);
-                }
-        }
-
-        return (object);
-}
-#endif                          /* ACPI_USE_LOCAL_CACHE */
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index baa441929720..f261737636da 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -36,6 +36,7 @@
 #include <linux/backlight.h>
 #include <linux/thermal.h>
 #include <linux/video_output.h>
+#include <linux/sort.h>
 #include <asm/uaccess.h>
 
 #include <acpi/acpi_bus.h>
@@ -481,6 +482,7 @@ acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level)
         int status = AE_OK;
         union acpi_object arg0 = { ACPI_TYPE_INTEGER };
         struct acpi_object_list args = { 1, &arg0 };
+        int state;
 
 
         arg0.integer.value = level;
@@ -489,6 +491,10 @@ acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level)
                 status = acpi_evaluate_object(device->dev->handle, "_BCM",
                                               &args, NULL);
         device->brightness->curr = level;
+        for (state = 2; state < device->brightness->count; state++)
+                if (level == device->brightness->levels[state])
+                        device->backlight->props.brightness = state - 2;
+
         return status;
 }
 
@@ -626,6 +632,16 @@ acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag)
 }
 
 /*
+ * Simple comparison function used to sort backlight levels.
+ */
+
+static int
+acpi_video_cmp_level(const void *a, const void *b)
+{
+        return *(int *)a - *(int *)b;
+}
+
+/*
  *  Arg:        
  *      device  : video output device (LCD, CRT, ..)
  *
@@ -676,6 +692,10 @@ acpi_video_init_brightness(struct acpi_video_device *device)
                 count++;
         }
 
+        /* don't sort the first two brightness levels */
+        sort(&br->levels[2], count - 2, sizeof(br->levels[2]),
+                acpi_video_cmp_level, NULL);
+
         if (count < 2)
                 goto out_free_levels;
 
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index f022eb6f5637..50e3d2dbf3af 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -234,7 +234,7 @@ EXPORT_SYMBOL(acpi_video_display_switch_support);
  * To force that backlight or display output switching is processed by vendor
  * specific acpi drivers or video.ko driver.
  */
-int __init acpi_backlight(char *str)
+static int __init acpi_backlight(char *str)
 {
         if (str == NULL || *str == '\0')
                 return 1;
@@ -250,7 +250,7 @@ int __init acpi_backlight(char *str)
 }
 __setup("acpi_backlight=", acpi_backlight);
 
-int __init acpi_display_output(char *str)
+static int __init acpi_display_output(char *str)
 {
         if (str == NULL || *str == '\0')
                 return 1;
diff --git a/drivers/acpi/sleep/wakeup.c b/drivers/acpi/wakeup.c
index dea4c23df764..2d34806d45dd 100644
--- a/drivers/acpi/sleep/wakeup.c
+++ b/drivers/acpi/wakeup.c
@@ -8,7 +8,6 @@
 #include <acpi/acpi_drivers.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
-#include <acpi/acevents.h>
 #include "sleep.h"
 
 #define _COMPONENT              ACPI_SYSTEM_COMPONENT
@@ -28,8 +27,6 @@ void acpi_enable_wakeup_device_prep(u8 sleep_state)
 {
         struct list_head *node, *next;
 
-        ACPI_FUNCTION_TRACE("acpi_enable_wakeup_device_prep");
-
         spin_lock(&acpi_device_lock);
         list_for_each_safe(node, next, &acpi_wakeup_device_list) {
                 struct acpi_device *dev = container_of(node,
@@ -61,7 +58,6 @@ void acpi_enable_wakeup_device(u8 sleep_state)
          * Caution: this routine must be invoked when interrupt is disabled 
          * Refer ACPI2.0: P212
          */
-        ACPI_FUNCTION_TRACE("acpi_enable_wakeup_device");
         spin_lock(&acpi_device_lock);
         list_for_each_safe(node, next, &acpi_wakeup_device_list) {
                 struct acpi_device *dev =
@@ -103,8 +99,6 @@ void acpi_disable_wakeup_device(u8 sleep_state)
 {
         struct list_head *node, *next;
 
-        ACPI_FUNCTION_TRACE("acpi_disable_wakeup_device");
-
         spin_lock(&acpi_device_lock);
         list_for_each_safe(node, next, &acpi_wakeup_device_list) {
                 struct acpi_device *dev =
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index ef02e488d468..6273d98d00eb 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -19,12 +19,6 @@
 #include "libata.h"
 
 #include <acpi/acpi_bus.h>
-#include <acpi/acnames.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acparser.h>
-#include <acpi/acexcep.h>
-#include <acpi/acmacros.h>
-#include <acpi/actypes.h>
 
 enum {
         ATA_ACPI_FILTER_SETXFER = 1 << 0,
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 175df54eb664..c507a9ac78f4 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4556,7 +4556,7 @@ void ata_sg_clean(struct ata_queued_cmd *qc)
         struct scatterlist *sg = qc->sg;
         int dir = qc->dma_dir;
 
-        WARN_ON(sg == NULL);
+        WARN_ON_ONCE(sg == NULL);
 
         VPRINTK("unmapping %u sg elements\n", qc->n_elem);
 
@@ -4776,7 +4776,7 @@ void ata_qc_free(struct ata_queued_cmd *qc)
         struct ata_port *ap = qc->ap;
         unsigned int tag;
 
-        WARN_ON(qc == NULL);    /* ata_qc_from_tag _might_ return NULL */
+        WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
 
         qc->flags = 0;
         tag = qc->tag;
@@ -4791,8 +4791,8 @@ void __ata_qc_complete(struct ata_queued_cmd *qc)
         struct ata_port *ap = qc->ap;
         struct ata_link *link = qc->dev->link;
 
-        WARN_ON(qc == NULL);    /* ata_qc_from_tag _might_ return NULL */
-        WARN_ON(!(qc->flags & ATA_QCFLAG_ACTIVE));
+        WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
+        WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE));
 
         if (likely(qc->flags & ATA_QCFLAG_DMAMAP))
                 ata_sg_clean(qc);
@@ -4878,7 +4878,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc)
                 struct ata_device *dev = qc->dev;
                 struct ata_eh_info *ehi = &dev->link->eh_info;
 
-                WARN_ON(ap->pflags & ATA_PFLAG_FROZEN);
+                WARN_ON_ONCE(ap->pflags & ATA_PFLAG_FROZEN);
 
                 if (unlikely(qc->err_mask))
                         qc->flags |= ATA_QCFLAG_FAILED;
@@ -5000,16 +5000,16 @@ void ata_qc_issue(struct ata_queued_cmd *qc)
          * check is skipped for old EH because it reuses active qc to
          * request ATAPI sense.
          */
-        WARN_ON(ap->ops->error_handler && ata_tag_valid(link->active_tag));
+        WARN_ON_ONCE(ap->ops->error_handler && ata_tag_valid(link->active_tag));
 
         if (ata_is_ncq(prot)) {
-                WARN_ON(link->sactive & (1 << qc->tag));
+                WARN_ON_ONCE(link->sactive & (1 << qc->tag));
 
                 if (!link->sactive)
                         ap->nr_active_links++;
                 link->sactive |= 1 << qc->tag;
         } else {
-                WARN_ON(link->sactive);
+                WARN_ON_ONCE(link->sactive);
 
                 ap->nr_active_links++;
                 link->active_tag = qc->tag;
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index c59ad76c84b1..0eae9b453556 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -578,7 +578,7 @@ void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
         }
 
         if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
-                WARN_ON(!ioaddr->ctl_addr);
+                WARN_ON_ONCE(!ioaddr->ctl_addr);
                 iowrite8(tf->hob_feature, ioaddr->feature_addr);
                 iowrite8(tf->hob_nsect, ioaddr->nsect_addr);
                 iowrite8(tf->hob_lbal, ioaddr->lbal_addr);
@@ -651,7 +651,7 @@ void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
                         iowrite8(tf->ctl, ioaddr->ctl_addr);
                         ap->last_ctl = tf->ctl;
                 } else
-                        WARN_ON(1);
+                        WARN_ON_ONCE(1);
         }
 }
 EXPORT_SYMBOL_GPL(ata_sff_tf_read);
@@ -891,7 +891,7 @@ static void ata_pio_sectors(struct ata_queued_cmd *qc)
                 /* READ/WRITE MULTIPLE */
                 unsigned int nsect;
 
-                WARN_ON(qc->dev->multi_count == 0);
+                WARN_ON_ONCE(qc->dev->multi_count == 0);
 
                 nsect = min((qc->nbytes - qc->curbytes) / qc->sect_size,
                             qc->dev->multi_count);
@@ -918,7 +918,7 @@ static void atapi_send_cdb(struct ata_port *ap, struct ata_queued_cmd *qc)
 {
         /* send SCSI cdb */
         DPRINTK("send cdb\n");
-        WARN_ON(qc->dev->cdb_len < 12);
+        WARN_ON_ONCE(qc->dev->cdb_len < 12);
 
         ap->ops->sff_data_xfer(qc->dev, qc->cdb, qc->dev->cdb_len, 1);
         ata_sff_sync(ap);
@@ -1014,7 +1014,7 @@ next_sg:
         }
 
         /* consumed can be larger than count only for the last transfer */
-        WARN_ON(qc->cursg && count != consumed);
+        WARN_ON_ONCE(qc->cursg && count != consumed);
 
         if (bytes)
                 goto next_sg;
@@ -1172,13 +1172,13 @@ int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
         unsigned long flags = 0;
         int poll_next;
 
-        WARN_ON((qc->flags & ATA_QCFLAG_ACTIVE) == 0);
+        WARN_ON_ONCE((qc->flags & ATA_QCFLAG_ACTIVE) == 0);
 
         /* Make sure ata_sff_qc_issue() does not throw things
          * like DMA polling into the workqueue. Notice that
          * in_wq is not equivalent to (qc->tf.flags & ATA_TFLAG_POLLING).
          */
-        WARN_ON(in_wq != ata_hsm_ok_in_wq(ap, qc));
+        WARN_ON_ONCE(in_wq != ata_hsm_ok_in_wq(ap, qc));
 
 fsm_start:
         DPRINTK("ata%u: protocol %d task_state %d (dev_stat 0x%X)\n",
@@ -1387,7 +1387,7 @@ fsm_start:
                 DPRINTK("ata%u: dev %u command complete, drv_stat 0x%x\n",
                         ap->print_id, qc->dev->devno, status);
 
-                WARN_ON(qc->err_mask & (AC_ERR_DEV | AC_ERR_HSM));
+                WARN_ON_ONCE(qc->err_mask & (AC_ERR_DEV | AC_ERR_HSM));
 
                 ap->hsm_task_state = HSM_ST_IDLE;
 
@@ -1423,7 +1423,7 @@ void ata_pio_task(struct work_struct *work)
         int poll_next;
 
 fsm_start:
-        WARN_ON(ap->hsm_task_state == HSM_ST_IDLE);
+        WARN_ON_ONCE(ap->hsm_task_state == HSM_ST_IDLE);
 
         /*
          * This is purely heuristic.  This is a fast path.
@@ -1512,7 +1512,7 @@ unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc)
                 break;
 
         case ATA_PROT_DMA:
-                WARN_ON(qc->tf.flags & ATA_TFLAG_POLLING);
+                WARN_ON_ONCE(qc->tf.flags & ATA_TFLAG_POLLING);
 
                 ap->ops->sff_tf_load(ap, &qc->tf);  /* load tf registers */
                 ap->ops->bmdma_setup(qc);           /* set up bmdma */
@@ -1564,7 +1564,7 @@ unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc)
                 break;
 
         case ATAPI_PROT_DMA:
-                WARN_ON(qc->tf.flags & ATA_TFLAG_POLLING);
+                WARN_ON_ONCE(qc->tf.flags & ATA_TFLAG_POLLING);
 
                 ap->ops->sff_tf_load(ap, &qc->tf);  /* load tf registers */
                 ap->ops->bmdma_setup(qc);           /* set up bmdma */
@@ -1576,7 +1576,7 @@ unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc)
                 break;
 
         default:
-                WARN_ON(1);
+                WARN_ON_ONCE(1);
                 return AC_ERR_SYSTEM;
         }
 
diff --git a/drivers/ata/pata_acpi.c b/drivers/ata/pata_acpi.c
index e2e332d8ff95..8b77a9802df1 100644
--- a/drivers/ata/pata_acpi.c
+++ b/drivers/ata/pata_acpi.c
@@ -13,12 +13,6 @@
 #include <linux/device.h>
 #include <scsi/scsi_host.h>
 #include <acpi/acpi_bus.h>
-#include <acpi/acnames.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acparser.h>
-#include <acpi/acexcep.h>
-#include <acpi/acmacros.h>
-#include <acpi/actypes.h>
 
 #include <linux/libata.h>
 #include <linux/ata.h>
diff --git a/drivers/char/tpm/tpm_bios.c b/drivers/char/tpm/tpm_bios.c
index 68f052b42ed7..ed306eb1057f 100644
--- a/drivers/char/tpm/tpm_bios.c
+++ b/drivers/char/tpm/tpm_bios.c
@@ -23,8 +23,6 @@
 #include <linux/security.h>
 #include <linux/module.h>
 #include <acpi/acpi.h>
-#include <acpi/actypes.h>
-#include <acpi/actbl.h>
 #include "tpm.h"
 
 #define TCG_EVENT_NAME_LEN_MAX  255
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index 8d7cf3f31450..f1df59f59a37 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -15,12 +15,14 @@
 #include <linux/tick.h>
 
 #define BREAK_FUZZ      4       /* 4 us */
+#define PRED_HISTORY_PCT        50
 
 struct menu_device {
         int             last_state_idx;
 
         unsigned int    expected_us;
         unsigned int    predicted_us;
+        unsigned int    current_predicted_us;
         unsigned int    last_measured_us;
         unsigned int    elapsed_us;
 };
@@ -47,6 +49,12 @@ static int menu_select(struct cpuidle_device *dev)
         data->expected_us =
                 (u32) ktime_to_ns(tick_nohz_get_sleep_length()) / 1000;
 
+        /* Recalculate predicted_us based on prediction_history_pct */
+        data->predicted_us *= PRED_HISTORY_PCT;
+        data->predicted_us += (100 - PRED_HISTORY_PCT) *
+                                data->current_predicted_us;
+        data->predicted_us /= 100;
+
         /* find the deepest idle state that satisfies our constraints */
         for (i = CPUIDLE_DRIVER_STATE_START + 1; i < dev->state_count; i++) {
                 struct cpuidle_state *s = &dev->states[i];
@@ -97,7 +105,7 @@ static void menu_reflect(struct cpuidle_device *dev)
                 measured_us = -1;
 
         /* Predict time until next break event */
-        data->predicted_us = max(measured_us, data->last_measured_us);
+        data->current_predicted_us = max(measured_us, data->last_measured_us);
 
         if (last_idle_us + BREAK_FUZZ <
             data->expected_us - target->exit_latency) {
diff --git a/drivers/dca/dca-core.c b/drivers/dca/dca-core.c
index d883e1b8bb8c..55433849bfa6 100644
--- a/drivers/dca/dca-core.c
+++ b/drivers/dca/dca-core.c
@@ -270,6 +270,6 @@ static void __exit dca_exit(void)
         dca_sysfs_exit();
 }
 
-subsys_initcall(dca_init);
+arch_initcall(dca_init);
 module_exit(dca_exit);
 
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index 904e57558bb5..e34b06420816 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -33,7 +33,6 @@ config INTEL_IOATDMA
 config INTEL_IOP_ADMA
         tristate "Intel IOP ADMA support"
         depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX
-        select ASYNC_CORE
         select DMA_ENGINE
         help
           Enable support for the Intel(R) IOP Series RAID engines.
@@ -59,7 +58,6 @@ config FSL_DMA
 config MV_XOR
         bool "Marvell XOR engine support"
         depends on PLAT_ORION
-        select ASYNC_CORE
         select DMA_ENGINE
         ---help---
           Enable support for the Marvell XOR engine.
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 657996517374..403dbe781122 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -31,32 +31,18 @@
  *
  * LOCKING:
  *
- * The subsystem keeps two global lists, dma_device_list and dma_client_list.
- * Both of these are protected by a mutex, dma_list_mutex.
+ * The subsystem keeps a global list of dma_device structs it is protected by a
+ * mutex, dma_list_mutex.
+ *
+ * A subsystem can get access to a channel by calling dmaengine_get() followed
+ * by dma_find_channel(), or if it has need for an exclusive channel it can call
+ * dma_request_channel().  Once a channel is allocated a reference is taken
+ * against its corresponding driver to disable removal.
  *
  * Each device has a channels list, which runs unlocked but is never modified
  * once the device is registered, it's just setup by the driver.
  *
- * Each client is responsible for keeping track of the channels it uses.  See
- * the definition of dma_event_callback in dmaengine.h.
- *
- * Each device has a kref, which is initialized to 1 when the device is
- * registered. A kref_get is done for each device registered.  When the
- * device is released, the corresponding kref_put is done in the release
- * method. Every time one of the device's channels is allocated to a client,
- * a kref_get occurs.  When the channel is freed, the corresponding kref_put
- * happens. The device's release function does a completion, so
- * unregister_device does a remove event, device_unregister, a kref_put
- * for the first reference, then waits on the completion for all other
- * references to finish.
- *
- * Each channel has an open-coded implementation of Rusty Russell's "bigref,"
- * with a kref and a per_cpu local_t.  A dma_chan_get is called when a client
- * signals that it wants to use a channel, and dma_chan_put is called when
- * a channel is removed or a client using it is unregistered.  A client can
- * take extra references per outstanding transaction, as is the case with
- * the NET DMA client.  The release function does a kref_put on the device.
- *      -ChrisL, DanW
+ * See Documentation/dmaengine.txt for more details
  */
 
 #include <linux/init.h>
@@ -70,54 +56,85 @@
 #include <linux/rcupdate.h>
 #include <linux/mutex.h>
 #include <linux/jiffies.h>
+#include <linux/rculist.h>
+#include <linux/idr.h>
 
 static DEFINE_MUTEX(dma_list_mutex);
 static LIST_HEAD(dma_device_list);
-static LIST_HEAD(dma_client_list);
+static long dmaengine_ref_count;
+static struct idr dma_idr;
 
 /* --- sysfs implementation --- */
 
+/**
+ * dev_to_dma_chan - convert a device pointer to the its sysfs container object
+ * @dev - device node
+ *
+ * Must be called under dma_list_mutex
+ */
+static struct dma_chan *dev_to_dma_chan(struct device *dev)
+{
+        struct dma_chan_dev *chan_dev;
+
+        chan_dev = container_of(dev, typeof(*chan_dev), device);
+        return chan_dev->chan;
+}
+
 static ssize_t show_memcpy_count(struct device *dev, struct device_attribute *attr, char *buf)
 {
-        struct dma_chan *chan = to_dma_chan(dev);
+        struct dma_chan *chan;
         unsigned long count = 0;
         int i;
+        int err;
 
-        for_each_possible_cpu(i)
-                count += per_cpu_ptr(chan->local, i)->memcpy_count;
+        mutex_lock(&dma_list_mutex);
+        chan = dev_to_dma_chan(dev);
+        if (chan) {
+                for_each_possible_cpu(i)
+                        count += per_cpu_ptr(chan->local, i)->memcpy_count;
+                err = sprintf(buf, "%lu\n", count);
+        } else
+                err = -ENODEV;
+        mutex_unlock(&dma_list_mutex);
 
-        return sprintf(buf, "%lu\n", count);
+        return err;
 }
 
 static ssize_t show_bytes_transferred(struct device *dev, struct device_attribute *attr,
                                       char *buf)
 {
-        struct dma_chan *chan = to_dma_chan(dev);
+        struct dma_chan *chan;
         unsigned long count = 0;
         int i;
+        int err;
 
-        for_each_possible_cpu(i)
-                count += per_cpu_ptr(chan->local, i)->bytes_transferred;
+        mutex_lock(&dma_list_mutex);
+        chan = dev_to_dma_chan(dev);
+        if (chan) {
+                for_each_possible_cpu(i)
+                        count += per_cpu_ptr(chan->local, i)->bytes_transferred;
+                err = sprintf(buf, "%lu\n", count);
+        } else
+                err = -ENODEV;
+        mutex_unlock(&dma_list_mutex);
 
-        return sprintf(buf, "%lu\n", count);
+        return err;
 }
 
 static ssize_t show_in_use(struct device *dev, struct device_attribute *attr, char *buf)
 {
-        struct dma_chan *chan = to_dma_chan(dev);
-        int in_use = 0;
-
-        if (unlikely(chan->slow_ref) &&
-                atomic_read(&chan->refcount.refcount) > 1)
-                in_use = 1;
-        else {
-                if (local_read(&(per_cpu_ptr(chan->local,
-                        get_cpu())->refcount)) > 0)
-                        in_use = 1;
-                put_cpu();
-        }
+        struct dma_chan *chan;
+        int err;
 
-        return sprintf(buf, "%d\n", in_use);
+        mutex_lock(&dma_list_mutex);
+        chan = dev_to_dma_chan(dev);
+        if (chan)
+                err = sprintf(buf, "%d\n", chan->client_count);
+        else
+                err = -ENODEV;
+        mutex_unlock(&dma_list_mutex);
+
+        return err;
 }
 
 static struct device_attribute dma_attrs[] = {
@@ -127,76 +144,110 @@ static struct device_attribute dma_attrs[] = {
         __ATTR_NULL
 };
 
-static void dma_async_device_cleanup(struct kref *kref);
-
-static void dma_dev_release(struct device *dev)
+static void chan_dev_release(struct device *dev)
 {
-        struct dma_chan *chan = to_dma_chan(dev);
-        kref_put(&chan->device->refcount, dma_async_device_cleanup);
+        struct dma_chan_dev *chan_dev;
+
+        chan_dev = container_of(dev, typeof(*chan_dev), device);
+        if (atomic_dec_and_test(chan_dev->idr_ref)) {
+                mutex_lock(&dma_list_mutex);
+                idr_remove(&dma_idr, chan_dev->dev_id);
+                mutex_unlock(&dma_list_mutex);
+                kfree(chan_dev->idr_ref);
+        }
+        kfree(chan_dev);
 }
 
 static struct class dma_devclass = {
         .name           = "dma",
         .dev_attrs      = dma_attrs,
-        .dev_release    = dma_dev_release,
+        .dev_release    = chan_dev_release,
 };
 
 /* --- client and device registration --- */
 
-#define dma_chan_satisfies_mask(chan, mask) \
-        __dma_chan_satisfies_mask((chan), &(mask))
+#define dma_device_satisfies_mask(device, mask) \
+        __dma_device_satisfies_mask((device), &(mask))
 static int
-__dma_chan_satisfies_mask(struct dma_chan *chan, dma_cap_mask_t *want)
+__dma_device_satisfies_mask(struct dma_device *device, dma_cap_mask_t *want)
 {
         dma_cap_mask_t has;
 
-        bitmap_and(has.bits, want->bits, chan->device->cap_mask.bits,
+        bitmap_and(has.bits, want->bits, device->cap_mask.bits,
                 DMA_TX_TYPE_END);
         return bitmap_equal(want->bits, has.bits, DMA_TX_TYPE_END);
 }
 
+static struct module *dma_chan_to_owner(struct dma_chan *chan)
+{
+        return chan->device->dev->driver->owner;
+}
+
 /**
- * dma_client_chan_alloc - try to allocate channels to a client
- * @client: &dma_client
+ * balance_ref_count - catch up the channel reference count
+ * @chan - channel to balance ->client_count versus dmaengine_ref_count
  *
- * Called with dma_list_mutex held.
+ * balance_ref_count must be called under dma_list_mutex
  */
-static void dma_client_chan_alloc(struct dma_client *client)
+static void balance_ref_count(struct dma_chan *chan)
 {
-        struct dma_device *device;
-        struct dma_chan *chan;
-        int desc;       /* allocated descriptor count */
-        enum dma_state_client ack;
+        struct module *owner = dma_chan_to_owner(chan);
 
-        /* Find a channel */
-        list_for_each_entry(device, &dma_device_list, global_node) {
-                /* Does the client require a specific DMA controller? */
-                if (client->slave && client->slave->dma_dev
-                                && client->slave->dma_dev != device->dev)
-                        continue;
+        while (chan->client_count < dmaengine_ref_count) {
+                __module_get(owner);
+                chan->client_count++;
+        }
+}
 
-                list_for_each_entry(chan, &device->channels, device_node) {
-                        if (!dma_chan_satisfies_mask(chan, client->cap_mask))
-                                continue;
+/**
+ * dma_chan_get - try to grab a dma channel's parent driver module
+ * @chan - channel to grab
+ *
+ * Must be called under dma_list_mutex
+ */
+static int dma_chan_get(struct dma_chan *chan)
+{
+        int err = -ENODEV;
+        struct module *owner = dma_chan_to_owner(chan);
+
+        if (chan->client_count) {
+                __module_get(owner);
+                err = 0;
+        } else if (try_module_get(owner))
+                err = 0;
+
+        if (err == 0)
+                chan->client_count++;
+
+        /* allocate upon first client reference */
+        if (chan->client_count == 1 && err == 0) {
+                int desc_cnt = chan->device->device_alloc_chan_resources(chan);
+
+                if (desc_cnt < 0) {
+                        err = desc_cnt;
+                        chan->client_count = 0;
+                        module_put(owner);
+                } else if (!dma_has_cap(DMA_PRIVATE, chan->device->cap_mask))
+                        balance_ref_count(chan);
+        }
 
-                        desc = chan->device->device_alloc_chan_resources(
-                                        chan, client);
-                        if (desc >= 0) {
-                                ack = client->event_callback(client,
-                                                chan,
-                                                DMA_RESOURCE_AVAILABLE);
+        return err;
+}
 
-                                /* we are done once this client rejects
-                                 * an available resource
-                                 */
-                                if (ack == DMA_ACK) {
-                                        dma_chan_get(chan);
-                                        chan->client_count++;
-                                } else if (ack == DMA_NAK)
-                                        return;
-                        }
-                }
-        }
+/**
+ * dma_chan_put - drop a reference to a dma channel's parent driver module
+ * @chan - channel to release
+ *
+ * Must be called under dma_list_mutex
+ */
+static void dma_chan_put(struct dma_chan *chan)
+{
+        if (!chan->client_count)
+                return; /* this channel failed alloc_chan_resources */
+        chan->client_count--;
+        module_put(dma_chan_to_owner(chan));
+        if (chan->client_count == 0)
+                chan->device->device_free_chan_resources(chan);
 }
 
 enum dma_status dma_sync_wait(struct dma_chan *chan, dma_cookie_t cookie)
@@ -218,138 +269,342 @@ enum dma_status dma_sync_wait(struct dma_chan *chan, dma_cookie_t cookie)
 EXPORT_SYMBOL(dma_sync_wait);
 
 /**
- * dma_chan_cleanup - release a DMA channel's resources
- * @kref: kernel reference structure that contains the DMA channel device
+ * dma_cap_mask_all - enable iteration over all operation types
+ */
+static dma_cap_mask_t dma_cap_mask_all;
+
+/**
+ * dma_chan_tbl_ent - tracks channel allocations per core/operation
+ * @chan - associated channel for this entry
+ */
+struct dma_chan_tbl_ent {
+        struct dma_chan *chan;
+};
+
+/**
+ * channel_table - percpu lookup table for memory-to-memory offload providers
  */
-void dma_chan_cleanup(struct kref *kref)
+static struct dma_chan_tbl_ent *channel_table[DMA_TX_TYPE_END];
+
+static int __init dma_channel_table_init(void)
 {
-        struct dma_chan *chan = container_of(kref, struct dma_chan, refcount);
-        chan->device->device_free_chan_resources(chan);
-        kref_put(&chan->device->refcount, dma_async_device_cleanup);
+        enum dma_transaction_type cap;
+        int err = 0;
+
+        bitmap_fill(dma_cap_mask_all.bits, DMA_TX_TYPE_END);
+
+        /* 'interrupt', 'private', and 'slave' are channel capabilities,
+         * but are not associated with an operation so they do not need
+         * an entry in the channel_table
+         */
+        clear_bit(DMA_INTERRUPT, dma_cap_mask_all.bits);
+        clear_bit(DMA_PRIVATE, dma_cap_mask_all.bits);
+        clear_bit(DMA_SLAVE, dma_cap_mask_all.bits);
+
+        for_each_dma_cap_mask(cap, dma_cap_mask_all) {
+                channel_table[cap] = alloc_percpu(struct dma_chan_tbl_ent);
+                if (!channel_table[cap]) {
+                        err = -ENOMEM;
+                        break;
+                }
+        }
+
+        if (err) {
+                pr_err("dmaengine: initialization failure\n");
+                for_each_dma_cap_mask(cap, dma_cap_mask_all)
+                        if (channel_table[cap])
+                                free_percpu(channel_table[cap]);
+        }
+
+        return err;
 }
-EXPORT_SYMBOL(dma_chan_cleanup);
+arch_initcall(dma_channel_table_init);
 
-static void dma_chan_free_rcu(struct rcu_head *rcu)
+/**
+ * dma_find_channel - find a channel to carry out the operation
+ * @tx_type: transaction type
+ */
+struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type)
 {
-        struct dma_chan *chan = container_of(rcu, struct dma_chan, rcu);
-        int bias = 0x7FFFFFFF;
-        int i;
-        for_each_possible_cpu(i)
-                bias -= local_read(&per_cpu_ptr(chan->local, i)->refcount);
-        atomic_sub(bias, &chan->refcount.refcount);
-        kref_put(&chan->refcount, dma_chan_cleanup);
+        struct dma_chan *chan;
+        int cpu;
+
+        WARN_ONCE(dmaengine_ref_count == 0,
+                  "client called %s without a reference", __func__);
+
+        cpu = get_cpu();
+        chan = per_cpu_ptr(channel_table[tx_type], cpu)->chan;
+        put_cpu();
+
+        return chan;
 }
+EXPORT_SYMBOL(dma_find_channel);
 
-static void dma_chan_release(struct dma_chan *chan)
+/**
+ * dma_issue_pending_all - flush all pending operations across all channels
+ */
+void dma_issue_pending_all(void)
 {
-        atomic_add(0x7FFFFFFF, &chan->refcount.refcount);
-        chan->slow_ref = 1;
-        call_rcu(&chan->rcu, dma_chan_free_rcu);
+        struct dma_device *device;
+        struct dma_chan *chan;
+
+        WARN_ONCE(dmaengine_ref_count == 0,
+                  "client called %s without a reference", __func__);
+
+        rcu_read_lock();
+        list_for_each_entry_rcu(device, &dma_device_list, global_node) {
+                if (dma_has_cap(DMA_PRIVATE, device->cap_mask))
+                        continue;
+                list_for_each_entry(chan, &device->channels, device_node)
+                        if (chan->client_count)
+                                device->device_issue_pending(chan);
+        }
+        rcu_read_unlock();
 }
+EXPORT_SYMBOL(dma_issue_pending_all);
 
 /**
- * dma_chans_notify_available - broadcast available channels to the clients
+ * nth_chan - returns the nth channel of the given capability
+ * @cap: capability to match
+ * @n: nth channel desired
+ *
+ * Defaults to returning the channel with the desired capability and the
+ * lowest reference count when 'n' cannot be satisfied.  Must be called
+ * under dma_list_mutex.
  */
-static void dma_clients_notify_available(void)
+static struct dma_chan *nth_chan(enum dma_transaction_type cap, int n)
 {
-        struct dma_client *client;
+        struct dma_device *device;
+        struct dma_chan *chan;
+        struct dma_chan *ret = NULL;
+        struct dma_chan *min = NULL;
 
-        mutex_lock(&dma_list_mutex);
+        list_for_each_entry(device, &dma_device_list, global_node) {
+                if (!dma_has_cap(cap, device->cap_mask) ||
+                    dma_has_cap(DMA_PRIVATE, device->cap_mask))
+                        continue;
+                list_for_each_entry(chan, &device->channels, device_node) {
+                        if (!chan->client_count)
+                                continue;
+                        if (!min)
+                                min = chan;
+                        else if (chan->table_count < min->table_count)
+                                min = chan;
+
+                        if (n-- == 0) {
+                                ret = chan;
+                                break; /* done */
+                        }
+                }
+                if (ret)
+                        break; /* done */
+        }
 
-        list_for_each_entry(client, &dma_client_list, global_node)
-                dma_client_chan_alloc(client);
+        if (!ret)
+                ret = min;
 
-        mutex_unlock(&dma_list_mutex);
+        if (ret)
+                ret->table_count++;
+
+        return ret;
 }
 
 /**
- * dma_chans_notify_available - tell the clients that a channel is going away
- * @chan: channel on its way out
+ * dma_channel_rebalance - redistribute the available channels
+ *
+ * Optimize for cpu isolation (each cpu gets a dedicated channel for an
+ * operation type) in the SMP case,  and operation isolation (avoid
+ * multi-tasking channels) in the non-SMP case.  Must be called under
+ * dma_list_mutex.
  */
-static void dma_clients_notify_removed(struct dma_chan *chan)
+static void dma_channel_rebalance(void)
 {
-        struct dma_client *client;
-        enum dma_state_client ack;
+        struct dma_chan *chan;
+        struct dma_device *device;
+        int cpu;
+        int cap;
+        int n;
 
-        mutex_lock(&dma_list_mutex);
+        /* undo the last distribution */
+        for_each_dma_cap_mask(cap, dma_cap_mask_all)
+                for_each_possible_cpu(cpu)
+                        per_cpu_ptr(channel_table[cap], cpu)->chan = NULL;
+
+        list_for_each_entry(device, &dma_device_list, global_node) {
+                if (dma_has_cap(DMA_PRIVATE, device->cap_mask))
+                        continue;
+                list_for_each_entry(chan, &device->channels, device_node)
+                        chan->table_count = 0;
+        }
 
-        list_for_each_entry(client, &dma_client_list, global_node) {
-                ack = client->event_callback(client, chan,
-                                DMA_RESOURCE_REMOVED);
+        /* don't populate the channel_table if no clients are available */
+        if (!dmaengine_ref_count)
+                return;
 
-                /* client was holding resources for this channel so
-                 * free it
-                 */
-                if (ack == DMA_ACK) {
-                        dma_chan_put(chan);
-                        chan->client_count--;
+        /* redistribute available channels */
+        n = 0;
+        for_each_dma_cap_mask(cap, dma_cap_mask_all)
+                for_each_online_cpu(cpu) {
+                        if (num_possible_cpus() > 1)
+                                chan = nth_chan(cap, n++);
+                        else
+                                chan = nth_chan(cap, -1);
+
+                        per_cpu_ptr(channel_table[cap], cpu)->chan = chan;
+                }
+}
+
+static struct dma_chan *private_candidate(dma_cap_mask_t *mask, struct dma_device *dev,
+                                          dma_filter_fn fn, void *fn_param)
+{
+        struct dma_chan *chan;
+
+        if (!__dma_device_satisfies_mask(dev, mask)) {
+                pr_debug("%s: wrong capabilities\n", __func__);
+                return NULL;
+        }
+        /* devices with multiple channels need special handling as we need to
+         * ensure that all channels are either private or public.
+         */
+        if (dev->chancnt > 1 && !dma_has_cap(DMA_PRIVATE, dev->cap_mask))
+                list_for_each_entry(chan, &dev->channels, device_node) {
+                        /* some channels are already publicly allocated */
+                        if (chan->client_count)
+                                return NULL;
                 }
+
+        list_for_each_entry(chan, &dev->channels, device_node) {
+                if (chan->client_count) {
+                        pr_debug("%s: %s busy\n",
+                                 __func__, dma_chan_name(chan));
+                        continue;
+                }
+                if (fn && !fn(chan, fn_param)) {
+                        pr_debug("%s: %s filter said false\n",
+                                 __func__, dma_chan_name(chan));
+                        continue;
+                }
+                return chan;
         }
 
-        mutex_unlock(&dma_list_mutex);
+        return NULL;
 }
 
 /**
- * dma_async_client_register - register a &dma_client
- * @client: ptr to a client structure with valid 'event_callback' and 'cap_mask'
+ * dma_request_channel - try to allocate an exclusive channel
+ * @mask: capabilities that the channel must satisfy
+ * @fn: optional callback to disposition available channels
+ * @fn_param: opaque parameter to pass to dma_filter_fn
  */
-void dma_async_client_register(struct dma_client *client)
+struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param)
 {
-        /* validate client data */
-        BUG_ON(dma_has_cap(DMA_SLAVE, client->cap_mask) &&
-                !client->slave);
+        struct dma_device *device, *_d;
+        struct dma_chan *chan = NULL;
+        int err;
 
+        /* Find a channel */
+        mutex_lock(&dma_list_mutex);
+        list_for_each_entry_safe(device, _d, &dma_device_list, global_node) {
+                chan = private_candidate(mask, device, fn, fn_param);
+                if (chan) {
+                        /* Found a suitable channel, try to grab, prep, and
+                         * return it.  We first set DMA_PRIVATE to disable
+                         * balance_ref_count as this channel will not be
+                         * published in the general-purpose allocator
+                         */
+                        dma_cap_set(DMA_PRIVATE, device->cap_mask);
+                        err = dma_chan_get(chan);
+
+                        if (err == -ENODEV) {
+                                pr_debug("%s: %s module removed\n", __func__,
+                                         dma_chan_name(chan));
+                                list_del_rcu(&device->global_node);
+                        } else if (err)
+                                pr_err("dmaengine: failed to get %s: (%d)\n",
+                                       dma_chan_name(chan), err);
+                        else
+                                break;
+                        chan = NULL;
+                }
+        }
+        mutex_unlock(&dma_list_mutex);
+
+        pr_debug("%s: %s (%s)\n", __func__, chan ? "success" : "fail",
+                 chan ? dma_chan_name(chan) : NULL);
+
+        return chan;
+}
+EXPORT_SYMBOL_GPL(__dma_request_channel);
+
+void dma_release_channel(struct dma_chan *chan)
+{
         mutex_lock(&dma_list_mutex);
-        list_add_tail(&client->global_node, &dma_client_list);
+        WARN_ONCE(chan->client_count != 1,
+                  "chan reference count %d != 1\n", chan->client_count);
+        dma_chan_put(chan);
         mutex_unlock(&dma_list_mutex);
 }
-EXPORT_SYMBOL(dma_async_client_register);
+EXPORT_SYMBOL_GPL(dma_release_channel);
 
 /**
- * dma_async_client_unregister - unregister a client and free the &dma_client
- * @client: &dma_client to free
- *
- * Force frees any allocated DMA channels, frees the &dma_client memory
+ * dmaengine_get - register interest in dma_channels
  */
-void dma_async_client_unregister(struct dma_client *client)
+void dmaengine_get(void)
 {
-        struct dma_device *device;
+        struct dma_device *device, *_d;
         struct dma_chan *chan;
-        enum dma_state_client ack;
-
-        if (!client)
-                return;
+        int err;
 
         mutex_lock(&dma_list_mutex);
-        /* free all channels the client is holding */
-        list_for_each_entry(device, &dma_device_list, global_node)
-                list_for_each_entry(chan, &device->channels, device_node) {
-                        ack = client->event_callback(client, chan,
-                                DMA_RESOURCE_REMOVED);
+        dmaengine_ref_count++;
 
-                        if (ack == DMA_ACK) {
-                                dma_chan_put(chan);
-                                chan->client_count--;
-                        }
+        /* try to grab channels */
+        list_for_each_entry_safe(device, _d, &dma_device_list, global_node) {
+                if (dma_has_cap(DMA_PRIVATE, device->cap_mask))
+                        continue;
+                list_for_each_entry(chan, &device->channels, device_node) {
+                        err = dma_chan_get(chan);
+                        if (err == -ENODEV) {
+                                /* module removed before we could use it */
+                                list_del_rcu(&device->global_node);
+                                break;
+                        } else if (err)
+                                pr_err("dmaengine: failed to get %s: (%d)\n",
+                                       dma_chan_name(chan), err);
                 }
+        }
 
-        list_del(&client->global_node);
+        /* if this is the first reference and there were channels
+         * waiting we need to rebalance to get those channels
+         * incorporated into the channel table
+         */
+        if (dmaengine_ref_count == 1)
+                dma_channel_rebalance();
         mutex_unlock(&dma_list_mutex);
 }
-EXPORT_SYMBOL(dma_async_client_unregister);
+EXPORT_SYMBOL(dmaengine_get);
 
 /**
- * dma_async_client_chan_request - send all available channels to the
- * client that satisfy the capability mask
- * @client - requester
+ * dmaengine_put - let dma drivers be removed when ref_count == 0
  */
-void dma_async_client_chan_request(struct dma_client *client)
+void dmaengine_put(void)
 {
+        struct dma_device *device;
+        struct dma_chan *chan;
+
         mutex_lock(&dma_list_mutex);
-        dma_client_chan_alloc(client);
+        dmaengine_ref_count--;
+        BUG_ON(dmaengine_ref_count < 0);
+        /* drop channel references */
+        list_for_each_entry(device, &dma_device_list, global_node) {
+                if (dma_has_cap(DMA_PRIVATE, device->cap_mask))
+                        continue;
+                list_for_each_entry(chan, &device->channels, device_node)
+                        dma_chan_put(chan);
+        }
         mutex_unlock(&dma_list_mutex);
 }
-EXPORT_SYMBOL(dma_async_client_chan_request);
+EXPORT_SYMBOL(dmaengine_put);
 
 /**
  * dma_async_device_register - registers DMA devices found
@@ -357,9 +612,9 @@ EXPORT_SYMBOL(dma_async_client_chan_request);
  */
 int dma_async_device_register(struct dma_device *device)
 {
-        static int id;
         int chancnt = 0, rc;
         struct dma_chan* chan;
+        atomic_t *idr_ref;
 
         if (!device)
                 return -ENODEV;
@@ -386,57 +641,83 @@ int dma_async_device_register(struct dma_device *device)
         BUG_ON(!device->device_issue_pending);
         BUG_ON(!device->dev);
 
-        init_completion(&device->done);
-        kref_init(&device->refcount);
-
+        idr_ref = kmalloc(sizeof(*idr_ref), GFP_KERNEL);
+        if (!idr_ref)
+                return -ENOMEM;
+        atomic_set(idr_ref, 0);
+ idr_retry:
+        if (!idr_pre_get(&dma_idr, GFP_KERNEL))
+                return -ENOMEM;
         mutex_lock(&dma_list_mutex);
-        device->dev_id = id++;
+        rc = idr_get_new(&dma_idr, NULL, &device->dev_id);
         mutex_unlock(&dma_list_mutex);
+        if (rc == -EAGAIN)
+                goto idr_retry;
+        else if (rc != 0)
+                return rc;
 
         /* represent channels in sysfs. Probably want devs too */
         list_for_each_entry(chan, &device->channels, device_node) {
                 chan->local = alloc_percpu(typeof(*chan->local));
                 if (chan->local == NULL)
                         continue;
+                chan->dev = kzalloc(sizeof(*chan->dev), GFP_KERNEL);
+                if (chan->dev == NULL) {
+                        free_percpu(chan->local);
+                        continue;
+                }
 
                 chan->chan_id = chancnt++;
-                chan->dev.class = &dma_devclass;
-                chan->dev.parent = device->dev;
-                dev_set_name(&chan->dev, "dma%dchan%d",
+                chan->dev->device.class = &dma_devclass;
+                chan->dev->device.parent = device->dev;
+                chan->dev->chan = chan;
+                chan->dev->idr_ref = idr_ref;
+                chan->dev->dev_id = device->dev_id;
+                atomic_inc(idr_ref);
+                dev_set_name(&chan->dev->device, "dma%dchan%d",
                              device->dev_id, chan->chan_id);
 
-                rc = device_register(&chan->dev);
+                rc = device_register(&chan->dev->device);
                 if (rc) {
-                        chancnt--;
                         free_percpu(chan->local);
                         chan->local = NULL;
                         goto err_out;
                 }
-
-                /* One for the channel, one of the class device */
-                kref_get(&device->refcount);
-                kref_get(&device->refcount);
-                kref_init(&chan->refcount);
                 chan->client_count = 0;
-                chan->slow_ref = 0;
-                INIT_RCU_HEAD(&chan->rcu);
         }
+        device->chancnt = chancnt;
 
         mutex_lock(&dma_list_mutex);
-        list_add_tail(&device->global_node, &dma_device_list);
+        /* take references on public channels */
+        if (dmaengine_ref_count && !dma_has_cap(DMA_PRIVATE, device->cap_mask))
+                list_for_each_entry(chan, &device->channels, device_node) {
+                        /* if clients are already waiting for channels we need
+                         * to take references on their behalf
+                         */
+                        if (dma_chan_get(chan) == -ENODEV) {
+                                /* note we can only get here for the first
+                                 * channel as the remaining channels are
+                                 * guaranteed to get a reference
+                                 */
+                                rc = -ENODEV;
+                                mutex_unlock(&dma_list_mutex);
+                                goto err_out;
+                        }
+                }
+        list_add_tail_rcu(&device->global_node, &dma_device_list);
+        dma_channel_rebalance();
         mutex_unlock(&dma_list_mutex);
 
-        dma_clients_notify_available();
-
         return 0;
 
 err_out:
         list_for_each_entry(chan, &device->channels, device_node) {
                 if (chan->local == NULL)
                         continue;
-                kref_put(&device->refcount, dma_async_device_cleanup);
-                device_unregister(&chan->dev);
-                chancnt--;
+                mutex_lock(&dma_list_mutex);
+                chan->dev->chan = NULL;
+                mutex_unlock(&dma_list_mutex);
+                device_unregister(&chan->dev->device);
                 free_percpu(chan->local);
         }
         return rc;
@@ -444,37 +725,30 @@ err_out:
 EXPORT_SYMBOL(dma_async_device_register);
 
 /**
- * dma_async_device_cleanup - function called when all references are released
- * @kref: kernel reference object
- */
-static void dma_async_device_cleanup(struct kref *kref)
-{
-        struct dma_device *device;
-
-        device = container_of(kref, struct dma_device, refcount);
-        complete(&device->done);
-}
-
-/**
- * dma_async_device_unregister - unregisters DMA devices
+ * dma_async_device_unregister - unregister a DMA device
  * @device: &dma_device
+ *
+ * This routine is called by dma driver exit routines, dmaengine holds module
+ * references to prevent it being called while channels are in use.
  */
 void dma_async_device_unregister(struct dma_device *device)
 {
         struct dma_chan *chan;
 
         mutex_lock(&dma_list_mutex);
-        list_del(&device->global_node);
+        list_del_rcu(&device->global_node);
+        dma_channel_rebalance();
         mutex_unlock(&dma_list_mutex);
 
         list_for_each_entry(chan, &device->channels, device_node) {
-                dma_clients_notify_removed(chan);
-                device_unregister(&chan->dev);
-                dma_chan_release(chan);
+                WARN_ONCE(chan->client_count,
+                          "%s called while %d clients hold a reference\n",
+                          __func__, chan->client_count);
+                mutex_lock(&dma_list_mutex);
+                chan->dev->chan = NULL;
+                mutex_unlock(&dma_list_mutex);
+                device_unregister(&chan->dev->device);
         }
-
-        kref_put(&device->refcount, dma_async_device_cleanup);
-        wait_for_completion(&device->done);
 }
 EXPORT_SYMBOL(dma_async_device_unregister);
 
@@ -626,10 +900,96 @@ void dma_async_tx_descriptor_init(struct dma_async_tx_descriptor *tx,
 }
 EXPORT_SYMBOL(dma_async_tx_descriptor_init);
 
+/* dma_wait_for_async_tx - spin wait for a transaction to complete
+ * @tx: in-flight transaction to wait on
+ *
+ * This routine assumes that tx was obtained from a call to async_memcpy,
+ * async_xor, async_memset, etc which ensures that tx is "in-flight" (prepped
+ * and submitted).  Walking the parent chain is only meant to cover for DMA
+ * drivers that do not implement the DMA_INTERRUPT capability and may race with
+ * the driver's descriptor cleanup routine.
+ */
+enum dma_status
+dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx)
+{
+        enum dma_status status;
+        struct dma_async_tx_descriptor *iter;
+        struct dma_async_tx_descriptor *parent;
+
+        if (!tx)
+                return DMA_SUCCESS;
+
+        WARN_ONCE(tx->parent, "%s: speculatively walking dependency chain for"
+                  " %s\n", __func__, dma_chan_name(tx->chan));
+
+        /* poll through the dependency chain, return when tx is complete */
+        do {
+                iter = tx;
+
+                /* find the root of the unsubmitted dependency chain */
+                do {
+                        parent = iter->parent;
+                        if (!parent)
+                                break;
+                        else
+                                iter = parent;
+                } while (parent);
+
+                /* there is a small window for ->parent == NULL and
+                 * ->cookie == -EBUSY
+                 */
+                while (iter->cookie == -EBUSY)
+                        cpu_relax();
+
+                status = dma_sync_wait(iter->chan, iter->cookie);
+        } while (status == DMA_IN_PROGRESS || (iter != tx));
+
+        return status;
+}
+EXPORT_SYMBOL_GPL(dma_wait_for_async_tx);
+
+/* dma_run_dependencies - helper routine for dma drivers to process
+ *      (start) dependent operations on their target channel
+ * @tx: transaction with dependencies
+ */
+void dma_run_dependencies(struct dma_async_tx_descriptor *tx)
+{
+        struct dma_async_tx_descriptor *dep = tx->next;
+        struct dma_async_tx_descriptor *dep_next;
+        struct dma_chan *chan;
+
+        if (!dep)
+                return;
+
+        chan = dep->chan;
+
+        /* keep submitting up until a channel switch is detected
+         * in that case we will be called again as a result of
+         * processing the interrupt from async_tx_channel_switch
+         */
+        for (; dep; dep = dep_next) {
+                spin_lock_bh(&dep->lock);
+                dep->parent = NULL;
+                dep_next = dep->next;
+                if (dep_next && dep_next->chan == chan)
+                        dep->next = NULL; /* ->next will be submitted */
+                else
+                        dep_next = NULL; /* submit current dep and terminate */
+                spin_unlock_bh(&dep->lock);
+
+                dep->tx_submit(dep);
+        }
+
+        chan->device->device_issue_pending(chan);
+}
+EXPORT_SYMBOL_GPL(dma_run_dependencies);
+
 static int __init dma_bus_init(void)
 {
+        idr_init(&dma_idr);
         mutex_init(&dma_list_mutex);
         return class_register(&dma_devclass);
 }
-subsys_initcall(dma_bus_init);
+arch_initcall(dma_bus_init);
+
 
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index ed9636bfb54a..3603f1ea5b28 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -35,7 +35,7 @@ MODULE_PARM_DESC(threads_per_chan,
 
 static unsigned int max_channels;
 module_param(max_channels, uint, S_IRUGO);
-MODULE_PARM_DESC(nr_channels,
+MODULE_PARM_DESC(max_channels,
                 "Maximum number of channels to use (default: all)");
 
 /*
@@ -71,7 +71,7 @@ struct dmatest_chan {
 
 /*
  * These are protected by dma_list_mutex since they're only used by
- * the DMA client event callback
+ * the DMA filter function callback
  */
 static LIST_HEAD(dmatest_channels);
 static unsigned int nr_channels;
@@ -80,7 +80,7 @@ static bool dmatest_match_channel(struct dma_chan *chan)
 {
         if (test_channel[0] == '\0')
                 return true;
-        return strcmp(dev_name(&chan->dev), test_channel) == 0;
+        return strcmp(dma_chan_name(chan), test_channel) == 0;
 }
 
 static bool dmatest_match_device(struct dma_device *device)
@@ -215,7 +215,6 @@ static int dmatest_func(void *data)
 
         smp_rmb();
         chan = thread->chan;
-        dma_chan_get(chan);
 
         while (!kthread_should_stop()) {
                 total_tests++;
@@ -293,7 +292,6 @@ static int dmatest_func(void *data)
         }
 
         ret = 0;
-        dma_chan_put(chan);
         kfree(thread->dstbuf);
 err_dstbuf:
         kfree(thread->srcbuf);
@@ -319,21 +317,16 @@ static void dmatest_cleanup_channel(struct dmatest_chan *dtc)
         kfree(dtc);
 }
 
-static enum dma_state_client dmatest_add_channel(struct dma_chan *chan)
+static int dmatest_add_channel(struct dma_chan *chan)
 {
         struct dmatest_chan     *dtc;
         struct dmatest_thread   *thread;
         unsigned int            i;
 
-        /* Have we already been told about this channel? */
-        list_for_each_entry(dtc, &dmatest_channels, node)
-                if (dtc->chan == chan)
-                        return DMA_DUP;
-
         dtc = kmalloc(sizeof(struct dmatest_chan), GFP_KERNEL);
         if (!dtc) {
-                pr_warning("dmatest: No memory for %s\n", dev_name(&chan->dev));
-                return DMA_NAK;
+                pr_warning("dmatest: No memory for %s\n", dma_chan_name(chan));
+                return -ENOMEM;
         }
 
         dtc->chan = chan;
@@ -343,16 +336,16 @@ static enum dma_state_client dmatest_add_channel(struct dma_chan *chan)
                 thread = kzalloc(sizeof(struct dmatest_thread), GFP_KERNEL);
                 if (!thread) {
                         pr_warning("dmatest: No memory for %s-test%u\n",
-                                   dev_name(&chan->dev), i);
+                                   dma_chan_name(chan), i);
                         break;
                 }
                 thread->chan = dtc->chan;
                 smp_wmb();
                 thread->task = kthread_run(dmatest_func, thread, "%s-test%u",
-                                dev_name(&chan->dev), i);
+                                dma_chan_name(chan), i);
                 if (IS_ERR(thread->task)) {
                         pr_warning("dmatest: Failed to run thread %s-test%u\n",
-                                        dev_name(&chan->dev), i);
+                                        dma_chan_name(chan), i);
                         kfree(thread);
                         break;
                 }
@@ -362,86 +355,62 @@ static enum dma_state_client dmatest_add_channel(struct dma_chan *chan)
                 list_add_tail(&thread->node, &dtc->threads);
         }
 
-        pr_info("dmatest: Started %u threads using %s\n", i, dev_name(&chan->dev));
+        pr_info("dmatest: Started %u threads using %s\n", i, dma_chan_name(chan));
 
         list_add_tail(&dtc->node, &dmatest_channels);
         nr_channels++;
 
-        return DMA_ACK;
-}
-
-static enum dma_state_client dmatest_remove_channel(struct dma_chan *chan)
-{
-        struct dmatest_chan     *dtc, *_dtc;
-
-        list_for_each_entry_safe(dtc, _dtc, &dmatest_channels, node) {
-                if (dtc->chan == chan) {
-                        list_del(&dtc->node);
-                        dmatest_cleanup_channel(dtc);
-                        pr_debug("dmatest: lost channel %s\n",
-                                        dev_name(&chan->dev));
-                        return DMA_ACK;
-                }
-        }
-
-        return DMA_DUP;
+        return 0;
 }
 
-/*
- * Start testing threads as new channels are assigned to us, and kill
- * them when the channels go away.
- *
- * When we unregister the client, all channels are removed so this
- * will also take care of cleaning things up when the module is
- * unloaded.
- */
-static enum dma_state_client
-dmatest_event(struct dma_client *client, struct dma_chan *chan,
-                enum dma_state state)
+static bool filter(struct dma_chan *chan, void *param)
 {
-        enum dma_state_client   ack = DMA_NAK;
-
-        switch (state) {
-        case DMA_RESOURCE_AVAILABLE:
-                if (!dmatest_match_channel(chan)
-                                || !dmatest_match_device(chan->device))
-                        ack = DMA_DUP;
-                else if (max_channels && nr_channels >= max_channels)
-                        ack = DMA_NAK;
-                else
-                        ack = dmatest_add_channel(chan);
-                break;
-
-        case DMA_RESOURCE_REMOVED:
-                ack = dmatest_remove_channel(chan);
-                break;
-
-        default:
-                pr_info("dmatest: Unhandled event %u (%s)\n",
-                                state, dev_name(&chan->dev));
-                break;
-        }
-
-        return ack;
+        if (!dmatest_match_channel(chan) || !dmatest_match_device(chan->device))
+                return false;
+        else
+                return true;
 }
 
-static struct dma_client dmatest_client = {
-        .event_callback = dmatest_event,
-};
-
 static int __init dmatest_init(void)
 {
-        dma_cap_set(DMA_MEMCPY, dmatest_client.cap_mask);
-        dma_async_client_register(&dmatest_client);
-        dma_async_client_chan_request(&dmatest_client);
+        dma_cap_mask_t mask;
+        struct dma_chan *chan;
+        int err = 0;
+
+        dma_cap_zero(mask);
+        dma_cap_set(DMA_MEMCPY, mask);
+        for (;;) {
+                chan = dma_request_channel(mask, filter, NULL);
+                if (chan) {
+                        err = dmatest_add_channel(chan);
+                        if (err == 0)
+                                continue;
+                        else {
+                                dma_release_channel(chan);
+                                break; /* add_channel failed, punt */
+                        }
+                } else
+                        break; /* no more channels available */
+                if (max_channels && nr_channels >= max_channels)
+                        break; /* we have all we need */
+        }
 
-        return 0;
+        return err;
 }
-module_init(dmatest_init);
+/* when compiled-in wait for drivers to load first */
+late_initcall(dmatest_init);
 
 static void __exit dmatest_exit(void)
 {
-        dma_async_client_unregister(&dmatest_client);
+        struct dmatest_chan *dtc, *_dtc;
+
+        list_for_each_entry_safe(dtc, _dtc, &dmatest_channels, node) {
+                list_del(&dtc->node);
+                dmatest_cleanup_channel(dtc);
+                pr_debug("dmatest: dropped channel %s\n",
+                         dma_chan_name(dtc->chan));
+                dma_release_channel(dtc->chan);
+        }
 }
 module_exit(dmatest_exit);
 
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 0778d99aea7c..6b702cc46b3d 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -70,6 +70,15 @@
  * the controller, though.
  */
 
+static struct device *chan2dev(struct dma_chan *chan)
+{
+        return &chan->dev->device;
+}
+static struct device *chan2parent(struct dma_chan *chan)
+{
+        return chan->dev->device.parent;
+}
+
 static struct dw_desc *dwc_first_active(struct dw_dma_chan *dwc)
 {
         return list_entry(dwc->active_list.next, struct dw_desc, desc_node);
@@ -93,12 +102,12 @@ static struct dw_desc *dwc_desc_get(struct dw_dma_chan *dwc)
                         ret = desc;
                         break;
                 }
-                dev_dbg(&dwc->chan.dev, "desc %p not ACKed\n", desc);
+                dev_dbg(chan2dev(&dwc->chan), "desc %p not ACKed\n", desc);
                 i++;
         }
         spin_unlock_bh(&dwc->lock);
 
-        dev_vdbg(&dwc->chan.dev, "scanned %u descriptors on freelist\n", i);
+        dev_vdbg(chan2dev(&dwc->chan), "scanned %u descriptors on freelist\n", i);
 
         return ret;
 }
@@ -108,10 +117,10 @@ static void dwc_sync_desc_for_cpu(struct dw_dma_chan *dwc, struct dw_desc *desc)
         struct dw_desc  *child;
 
         list_for_each_entry(child, &desc->txd.tx_list, desc_node)
-                dma_sync_single_for_cpu(dwc->chan.dev.parent,
+                dma_sync_single_for_cpu(chan2parent(&dwc->chan),
                                 child->txd.phys, sizeof(child->lli),
                                 DMA_TO_DEVICE);
-        dma_sync_single_for_cpu(dwc->chan.dev.parent,
+        dma_sync_single_for_cpu(chan2parent(&dwc->chan),
                         desc->txd.phys, sizeof(desc->lli),
                         DMA_TO_DEVICE);
 }
@@ -129,11 +138,11 @@ static void dwc_desc_put(struct dw_dma_chan *dwc, struct dw_desc *desc)
 
                 spin_lock_bh(&dwc->lock);
                 list_for_each_entry(child, &desc->txd.tx_list, desc_node)
-                        dev_vdbg(&dwc->chan.dev,
+                        dev_vdbg(chan2dev(&dwc->chan),
                                         "moving child desc %p to freelist\n",
                                         child);
                 list_splice_init(&desc->txd.tx_list, &dwc->free_list);
-                dev_vdbg(&dwc->chan.dev, "moving desc %p to freelist\n", desc);
+                dev_vdbg(chan2dev(&dwc->chan), "moving desc %p to freelist\n", desc);
                 list_add(&desc->desc_node, &dwc->free_list);
                 spin_unlock_bh(&dwc->lock);
         }
@@ -163,9 +172,9 @@ static void dwc_dostart(struct dw_dma_chan *dwc, struct dw_desc *first)
 
         /* ASSERT:  channel is idle */
         if (dma_readl(dw, CH_EN) & dwc->mask) {
-                dev_err(&dwc->chan.dev,
+                dev_err(chan2dev(&dwc->chan),
                         "BUG: Attempted to start non-idle channel\n");
-                dev_err(&dwc->chan.dev,
+                dev_err(chan2dev(&dwc->chan),
                         "  SAR: 0x%x DAR: 0x%x LLP: 0x%x CTL: 0x%x:%08x\n",
                         channel_readl(dwc, SAR),
                         channel_readl(dwc, DAR),
@@ -193,7 +202,7 @@ dwc_descriptor_complete(struct dw_dma_chan *dwc, struct dw_desc *desc)
         void                            *param;
         struct dma_async_tx_descriptor  *txd = &desc->txd;
 
-        dev_vdbg(&dwc->chan.dev, "descriptor %u complete\n", txd->cookie);
+        dev_vdbg(chan2dev(&dwc->chan), "descriptor %u complete\n", txd->cookie);
 
         dwc->completed = txd->cookie;
         callback = txd->callback;
@@ -208,11 +217,11 @@ dwc_descriptor_complete(struct dw_dma_chan *dwc, struct dw_desc *desc)
          * mapped before they were submitted...
          */
         if (!(txd->flags & DMA_COMPL_SKIP_DEST_UNMAP))
-                dma_unmap_page(dwc->chan.dev.parent, desc->lli.dar, desc->len,
-                                DMA_FROM_DEVICE);
+                dma_unmap_page(chan2parent(&dwc->chan), desc->lli.dar,
+                               desc->len, DMA_FROM_DEVICE);
         if (!(txd->flags & DMA_COMPL_SKIP_SRC_UNMAP))
-                dma_unmap_page(dwc->chan.dev.parent, desc->lli.sar, desc->len,
-                                DMA_TO_DEVICE);
+                dma_unmap_page(chan2parent(&dwc->chan), desc->lli.sar,
+                               desc->len, DMA_TO_DEVICE);
 
         /*
          * The API requires that no submissions are done from a
@@ -228,7 +237,7 @@ static void dwc_complete_all(struct dw_dma *dw, struct dw_dma_chan *dwc)
         LIST_HEAD(list);
 
         if (dma_readl(dw, CH_EN) & dwc->mask) {
-                dev_err(&dwc->chan.dev,
+                dev_err(chan2dev(&dwc->chan),
                         "BUG: XFER bit set, but channel not idle!\n");
 
                 /* Try to continue after resetting the channel... */
@@ -273,7 +282,7 @@ static void dwc_scan_descriptors(struct dw_dma *dw, struct dw_dma_chan *dwc)
                 return;
         }
 
-        dev_vdbg(&dwc->chan.dev, "scan_descriptors: llp=0x%x\n", llp);
+        dev_vdbg(chan2dev(&dwc->chan), "scan_descriptors: llp=0x%x\n", llp);
 
         list_for_each_entry_safe(desc, _desc, &dwc->active_list, desc_node) {
                 if (desc->lli.llp == llp)
@@ -292,7 +301,7 @@ static void dwc_scan_descriptors(struct dw_dma *dw, struct dw_dma_chan *dwc)
                 dwc_descriptor_complete(dwc, desc);
         }
 
-        dev_err(&dwc->chan.dev,
+        dev_err(chan2dev(&dwc->chan),
                 "BUG: All descriptors done, but channel not idle!\n");
 
         /* Try to continue after resetting the channel... */
@@ -308,7 +317,7 @@ static void dwc_scan_descriptors(struct dw_dma *dw, struct dw_dma_chan *dwc)
 
 static void dwc_dump_lli(struct dw_dma_chan *dwc, struct dw_lli *lli)
 {
-        dev_printk(KERN_CRIT, &dwc->chan.dev,
+        dev_printk(KERN_CRIT, chan2dev(&dwc->chan),
                         "  desc: s0x%x d0x%x l0x%x c0x%x:%x\n",
                         lli->sar, lli->dar, lli->llp,
                         lli->ctlhi, lli->ctllo);
@@ -342,9 +351,9 @@ static void dwc_handle_error(struct dw_dma *dw, struct dw_dma_chan *dwc)
          * controller flagged an error instead of scribbling over
          * random memory locations.
          */
-        dev_printk(KERN_CRIT, &dwc->chan.dev,
+        dev_printk(KERN_CRIT, chan2dev(&dwc->chan),
                         "Bad descriptor submitted for DMA!\n");
-        dev_printk(KERN_CRIT, &dwc->chan.dev,
+        dev_printk(KERN_CRIT, chan2dev(&dwc->chan),
                         "  cookie: %d\n", bad_desc->txd.cookie);
         dwc_dump_lli(dwc, &bad_desc->lli);
         list_for_each_entry(child, &bad_desc->txd.tx_list, desc_node)
@@ -442,12 +451,12 @@ static dma_cookie_t dwc_tx_submit(struct dma_async_tx_descriptor *tx)
          * for DMA. But this is hard to do in a race-free manner.
          */
         if (list_empty(&dwc->active_list)) {
-                dev_vdbg(&tx->chan->dev, "tx_submit: started %u\n",
+                dev_vdbg(chan2dev(tx->chan), "tx_submit: started %u\n",
                                 desc->txd.cookie);
                 dwc_dostart(dwc, desc);
                 list_add_tail(&desc->desc_node, &dwc->active_list);
         } else {
-                dev_vdbg(&tx->chan->dev, "tx_submit: queued %u\n",
+                dev_vdbg(chan2dev(tx->chan), "tx_submit: queued %u\n",
                                 desc->txd.cookie);
 
                 list_add_tail(&desc->desc_node, &dwc->queue);
@@ -472,11 +481,11 @@ dwc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
         unsigned int            dst_width;
         u32                     ctllo;
 
-        dev_vdbg(&chan->dev, "prep_dma_memcpy d0x%x s0x%x l0x%zx f0x%lx\n",
+        dev_vdbg(chan2dev(chan), "prep_dma_memcpy d0x%x s0x%x l0x%zx f0x%lx\n",
                         dest, src, len, flags);
 
         if (unlikely(!len)) {
-                dev_dbg(&chan->dev, "prep_dma_memcpy: length is zero!\n");
+                dev_dbg(chan2dev(chan), "prep_dma_memcpy: length is zero!\n");
                 return NULL;
         }
 
@@ -516,7 +525,7 @@ dwc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
                         first = desc;
                 } else {
                         prev->lli.llp = desc->txd.phys;
-                        dma_sync_single_for_device(chan->dev.parent,
+                        dma_sync_single_for_device(chan2parent(chan),
                                         prev->txd.phys, sizeof(prev->lli),
                                         DMA_TO_DEVICE);
                         list_add_tail(&desc->desc_node,
@@ -531,7 +540,7 @@ dwc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
                 prev->lli.ctllo |= DWC_CTLL_INT_EN;
 
         prev->lli.llp = 0;
-        dma_sync_single_for_device(chan->dev.parent,
+        dma_sync_single_for_device(chan2parent(chan),
                         prev->txd.phys, sizeof(prev->lli),
                         DMA_TO_DEVICE);
 
@@ -562,15 +571,15 @@ dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
         struct scatterlist      *sg;
         size_t                  total_len = 0;
 
-        dev_vdbg(&chan->dev, "prep_dma_slave\n");
+        dev_vdbg(chan2dev(chan), "prep_dma_slave\n");
 
         if (unlikely(!dws || !sg_len))
                 return NULL;
 
-        reg_width = dws->slave.reg_width;
+        reg_width = dws->reg_width;
         prev = first = NULL;
 
-        sg_len = dma_map_sg(chan->dev.parent, sgl, sg_len, direction);
+        sg_len = dma_map_sg(chan2parent(chan), sgl, sg_len, direction);
 
         switch (direction) {
         case DMA_TO_DEVICE:
@@ -579,7 +588,7 @@ dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
                                 | DWC_CTLL_DST_FIX
                                 | DWC_CTLL_SRC_INC
                                 | DWC_CTLL_FC_M2P);
-                reg = dws->slave.tx_reg;
+                reg = dws->tx_reg;
                 for_each_sg(sgl, sg, sg_len, i) {
                         struct dw_desc  *desc;
                         u32             len;
@@ -587,7 +596,7 @@ dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
 
                         desc = dwc_desc_get(dwc);
                         if (!desc) {
-                                dev_err(&chan->dev,
+                                dev_err(chan2dev(chan),
                                         "not enough descriptors available\n");
                                 goto err_desc_get;
                         }
@@ -607,7 +616,7 @@ dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
                                 first = desc;
                         } else {
                                 prev->lli.llp = desc->txd.phys;
-                                dma_sync_single_for_device(chan->dev.parent,
+                                dma_sync_single_for_device(chan2parent(chan),
                                                 prev->txd.phys,
                                                 sizeof(prev->lli),
                                                 DMA_TO_DEVICE);
@@ -625,7 +634,7 @@ dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
                                 | DWC_CTLL_SRC_FIX
                                 | DWC_CTLL_FC_P2M);
 
-                reg = dws->slave.rx_reg;
+                reg = dws->rx_reg;
                 for_each_sg(sgl, sg, sg_len, i) {
                         struct dw_desc  *desc;
                         u32             len;
@@ -633,7 +642,7 @@ dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
 
                         desc = dwc_desc_get(dwc);
                         if (!desc) {
-                                dev_err(&chan->dev,
+                                dev_err(chan2dev(chan),
                                         "not enough descriptors available\n");
                                 goto err_desc_get;
                         }
@@ -653,7 +662,7 @@ dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
                                 first = desc;
                         } else {
                                 prev->lli.llp = desc->txd.phys;
-                                dma_sync_single_for_device(chan->dev.parent,
+                                dma_sync_single_for_device(chan2parent(chan),
                                                 prev->txd.phys,
                                                 sizeof(prev->lli),
                                                 DMA_TO_DEVICE);
@@ -673,7 +682,7 @@ dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
                 prev->lli.ctllo |= DWC_CTLL_INT_EN;
 
         prev->lli.llp = 0;
-        dma_sync_single_for_device(chan->dev.parent,
+        dma_sync_single_for_device(chan2parent(chan),
                         prev->txd.phys, sizeof(prev->lli),
                         DMA_TO_DEVICE);
 
@@ -758,29 +767,21 @@ static void dwc_issue_pending(struct dma_chan *chan)
         spin_unlock_bh(&dwc->lock);
 }
 
-static int dwc_alloc_chan_resources(struct dma_chan *chan,
-                struct dma_client *client)
+static int dwc_alloc_chan_resources(struct dma_chan *chan)
 {
         struct dw_dma_chan      *dwc = to_dw_dma_chan(chan);
         struct dw_dma           *dw = to_dw_dma(chan->device);
         struct dw_desc          *desc;
-        struct dma_slave        *slave;
         struct dw_dma_slave     *dws;
         int                     i;
         u32                     cfghi;
         u32                     cfglo;
 
-        dev_vdbg(&chan->dev, "alloc_chan_resources\n");
-
-        /* Channels doing slave DMA can only handle one client. */
-        if (dwc->dws || client->slave) {
-                if (chan->client_count)
-                        return -EBUSY;
-        }
+        dev_vdbg(chan2dev(chan), "alloc_chan_resources\n");
 
         /* ASSERT:  channel is idle */
         if (dma_readl(dw, CH_EN) & dwc->mask) {
-                dev_dbg(&chan->dev, "DMA channel not idle?\n");
+                dev_dbg(chan2dev(chan), "DMA channel not idle?\n");
                 return -EIO;
         }
 
@@ -789,23 +790,17 @@ static int dwc_alloc_chan_resources(struct dma_chan *chan,
         cfghi = DWC_CFGH_FIFO_MODE;
         cfglo = 0;
 
-        slave = client->slave;
-        if (slave) {
+        dws = dwc->dws;
+        if (dws) {
                 /*
                  * We need controller-specific data to set up slave
                  * transfers.
                  */
-                BUG_ON(!slave->dma_dev || slave->dma_dev != dw->dma.dev);
-
-                dws = container_of(slave, struct dw_dma_slave, slave);
+                BUG_ON(!dws->dma_dev || dws->dma_dev != dw->dma.dev);
 
-                dwc->dws = dws;
                 cfghi = dws->cfg_hi;
                 cfglo = dws->cfg_lo;
-        } else {
-                dwc->dws = NULL;
         }
-
         channel_writel(dwc, CFG_LO, cfglo);
         channel_writel(dwc, CFG_HI, cfghi);
 
@@ -822,7 +817,7 @@ static int dwc_alloc_chan_resources(struct dma_chan *chan,
 
                 desc = kzalloc(sizeof(struct dw_desc), GFP_KERNEL);
                 if (!desc) {
-                        dev_info(&chan->dev,
+                        dev_info(chan2dev(chan),
                                 "only allocated %d descriptors\n", i);
                         spin_lock_bh(&dwc->lock);
                         break;
@@ -832,7 +827,7 @@ static int dwc_alloc_chan_resources(struct dma_chan *chan,
                 desc->txd.tx_submit = dwc_tx_submit;
                 desc->txd.flags = DMA_CTRL_ACK;
                 INIT_LIST_HEAD(&desc->txd.tx_list);
-                desc->txd.phys = dma_map_single(chan->dev.parent, &desc->lli,
+                desc->txd.phys = dma_map_single(chan2parent(chan), &desc->lli,
                                 sizeof(desc->lli), DMA_TO_DEVICE);
                 dwc_desc_put(dwc, desc);
 
@@ -847,7 +842,7 @@ static int dwc_alloc_chan_resources(struct dma_chan *chan,
 
         spin_unlock_bh(&dwc->lock);
 
-        dev_dbg(&chan->dev,
+        dev_dbg(chan2dev(chan),
                 "alloc_chan_resources allocated %d descriptors\n", i);
 
         return i;
@@ -860,7 +855,7 @@ static void dwc_free_chan_resources(struct dma_chan *chan)
         struct dw_desc          *desc, *_desc;
         LIST_HEAD(list);
 
-        dev_dbg(&chan->dev, "free_chan_resources (descs allocated=%u)\n",
+        dev_dbg(chan2dev(chan), "free_chan_resources (descs allocated=%u)\n",
                         dwc->descs_allocated);
 
         /* ASSERT:  channel is idle */
@@ -881,13 +876,13 @@ static void dwc_free_chan_resources(struct dma_chan *chan)
         spin_unlock_bh(&dwc->lock);
 
         list_for_each_entry_safe(desc, _desc, &list, desc_node) {
-                dev_vdbg(&chan->dev, "  freeing descriptor %p\n", desc);
-                dma_unmap_single(chan->dev.parent, desc->txd.phys,
+                dev_vdbg(chan2dev(chan), "  freeing descriptor %p\n", desc);
+                dma_unmap_single(chan2parent(chan), desc->txd.phys,
                                 sizeof(desc->lli), DMA_TO_DEVICE);
                 kfree(desc);
         }
 
-        dev_vdbg(&chan->dev, "free_chan_resources done\n");
+        dev_vdbg(chan2dev(chan), "free_chan_resources done\n");
 }
 
 /*----------------------------------------------------------------------*/
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 0b95dcce447e..ca70a21afc68 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -366,8 +366,7 @@ static struct fsl_desc_sw *fsl_dma_alloc_descriptor(
  *
  * Return - The number of descriptors allocated.
  */
-static int fsl_dma_alloc_chan_resources(struct dma_chan *chan,
-                                        struct dma_client *client)
+static int fsl_dma_alloc_chan_resources(struct dma_chan *chan)
 {
         struct fsl_dma_chan *fsl_chan = to_fsl_chan(chan);
 
@@ -823,7 +822,7 @@ static int __devinit fsl_dma_chan_probe(struct fsl_dma_device *fdev,
          */
         WARN_ON(fdev->feature != new_fsl_chan->feature);
 
-        new_fsl_chan->dev = &new_fsl_chan->common.dev;
+        new_fsl_chan->dev = &new_fsl_chan->common.dev->device;
         new_fsl_chan->reg_base = ioremap(new_fsl_chan->reg.start,
                         new_fsl_chan->reg.end - new_fsl_chan->reg.start + 1);
 
diff --git a/drivers/dma/ioat.c b/drivers/dma/ioat.c
index 9b16a3af9a0a..4105d6575b64 100644
--- a/drivers/dma/ioat.c
+++ b/drivers/dma/ioat.c
@@ -75,60 +75,10 @@ static int ioat_dca_enabled = 1;
 module_param(ioat_dca_enabled, int, 0644);
 MODULE_PARM_DESC(ioat_dca_enabled, "control support of dca service (default: 1)");
 
-static int ioat_setup_functionality(struct pci_dev *pdev, void __iomem *iobase)
-{
-        struct ioat_device *device = pci_get_drvdata(pdev);
-        u8 version;
-        int err = 0;
-
-        version = readb(iobase + IOAT_VER_OFFSET);
-        switch (version) {
-        case IOAT_VER_1_2:
-                device->dma = ioat_dma_probe(pdev, iobase);
-                if (device->dma && ioat_dca_enabled)
-                        device->dca = ioat_dca_init(pdev, iobase);
-                break;
-        case IOAT_VER_2_0:
-                device->dma = ioat_dma_probe(pdev, iobase);
-                if (device->dma && ioat_dca_enabled)
-                        device->dca = ioat2_dca_init(pdev, iobase);
-                break;
-        case IOAT_VER_3_0:
-                device->dma = ioat_dma_probe(pdev, iobase);
-                if (device->dma && ioat_dca_enabled)
-                        device->dca = ioat3_dca_init(pdev, iobase);
-                break;
-        default:
-                err = -ENODEV;
-                break;
-        }
-        if (!device->dma)
-                err = -ENODEV;
-        return err;
-}
-
-static void ioat_shutdown_functionality(struct pci_dev *pdev)
-{
-        struct ioat_device *device = pci_get_drvdata(pdev);
-
-        dev_err(&pdev->dev, "Removing dma and dca services\n");
-        if (device->dca) {
-                unregister_dca_provider(device->dca);
-                free_dca_provider(device->dca);
-                device->dca = NULL;
-        }
-
-        if (device->dma) {
-                ioat_dma_remove(device->dma);
-                device->dma = NULL;
-        }
-}
-
 static struct pci_driver ioat_pci_driver = {
         .name           = "ioatdma",
         .id_table       = ioat_pci_tbl,
         .probe          = ioat_probe,
-        .shutdown       = ioat_shutdown_functionality,
         .remove         = __devexit_p(ioat_remove),
 };
 
@@ -179,7 +129,29 @@ static int __devinit ioat_probe(struct pci_dev *pdev,
 
         pci_set_master(pdev);
 
-        err = ioat_setup_functionality(pdev, iobase);
+        switch (readb(iobase + IOAT_VER_OFFSET)) {
+        case IOAT_VER_1_2:
+                device->dma = ioat_dma_probe(pdev, iobase);
+                if (device->dma && ioat_dca_enabled)
+                        device->dca = ioat_dca_init(pdev, iobase);
+                break;
+        case IOAT_VER_2_0:
+                device->dma = ioat_dma_probe(pdev, iobase);
+                if (device->dma && ioat_dca_enabled)
+                        device->dca = ioat2_dca_init(pdev, iobase);
+                break;
+        case IOAT_VER_3_0:
+                device->dma = ioat_dma_probe(pdev, iobase);
+                if (device->dma && ioat_dca_enabled)
+                        device->dca = ioat3_dca_init(pdev, iobase);
+                break;
+        default:
+                err = -ENODEV;
+                break;
+        }
+        if (!device->dma)
+                err = -ENODEV;
+
         if (err)
                 goto err_version;
 
@@ -198,17 +170,21 @@ err_enable_device:
         return err;
 }
 
-/*
- * It is unsafe to remove this module: if removed while a requested
- * dma is outstanding, esp. from tcp, it is possible to hang while
- * waiting for something that will never finish.  However, if you're
- * feeling lucky, this usually works just fine.
- */
 static void __devexit ioat_remove(struct pci_dev *pdev)
 {
         struct ioat_device *device = pci_get_drvdata(pdev);
 
-        ioat_shutdown_functionality(pdev);
+        dev_err(&pdev->dev, "Removing dma and dca services\n");
+        if (device->dca) {
+                unregister_dca_provider(device->dca);
+                free_dca_provider(device->dca);
+                device->dca = NULL;
+        }
+
+        if (device->dma) {
+                ioat_dma_remove(device->dma);
+                device->dma = NULL;
+        }
 
         kfree(device);
 }
diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c
index 6607fdd00b1c..b3759c4b6536 100644
--- a/drivers/dma/ioat_dma.c
+++ b/drivers/dma/ioat_dma.c
@@ -734,8 +734,7 @@ static void ioat2_dma_massage_chan_desc(struct ioat_dma_chan *ioat_chan)
  * ioat_dma_alloc_chan_resources - returns the number of allocated descriptors
  * @chan: the channel to be filled out
  */
-static int ioat_dma_alloc_chan_resources(struct dma_chan *chan,
-                                         struct dma_client *client)
+static int ioat_dma_alloc_chan_resources(struct dma_chan *chan)
 {
         struct ioat_dma_chan *ioat_chan = to_ioat_chan(chan);
         struct ioat_desc_sw *desc;
@@ -1341,12 +1340,11 @@ static void ioat_dma_start_null_desc(struct ioat_dma_chan *ioat_chan)
  */
 #define IOAT_TEST_SIZE 2000
 
-DECLARE_COMPLETION(test_completion);
 static void ioat_dma_test_callback(void *dma_async_param)
 {
-        printk(KERN_ERR "ioatdma: ioat_dma_test_callback(%p)\n",
-                dma_async_param);
-        complete(&test_completion);
+        struct completion *cmp = dma_async_param;
+
+        complete(cmp);
 }
 
 /**
@@ -1363,6 +1361,7 @@ static int ioat_dma_self_test(struct ioatdma_device *device)
         dma_addr_t dma_dest, dma_src;
         dma_cookie_t cookie;
         int err = 0;
+        struct completion cmp;
 
         src = kzalloc(sizeof(u8) * IOAT_TEST_SIZE, GFP_KERNEL);
         if (!src)
@@ -1381,7 +1380,7 @@ static int ioat_dma_self_test(struct ioatdma_device *device)
         dma_chan = container_of(device->common.channels.next,
                                 struct dma_chan,
                                 device_node);
-        if (device->common.device_alloc_chan_resources(dma_chan, NULL) < 1) {
+        if (device->common.device_alloc_chan_resources(dma_chan) < 1) {
                 dev_err(&device->pdev->dev,
                         "selftest cannot allocate chan resource\n");
                 err = -ENODEV;
@@ -1402,8 +1401,9 @@ static int ioat_dma_self_test(struct ioatdma_device *device)
         }
 
         async_tx_ack(tx);
+        init_completion(&cmp);
         tx->callback = ioat_dma_test_callback;
-        tx->callback_param = (void *)0x8086;
+        tx->callback_param = &cmp;
         cookie = tx->tx_submit(tx);
         if (cookie < 0) {
                 dev_err(&device->pdev->dev,
@@ -1413,7 +1413,7 @@ static int ioat_dma_self_test(struct ioatdma_device *device)
         }
         device->common.device_issue_pending(dma_chan);
 
-        wait_for_completion_timeout(&test_completion, msecs_to_jiffies(3000));
+        wait_for_completion_timeout(&cmp, msecs_to_jiffies(3000));
 
         if (device->common.device_is_tx_complete(dma_chan, cookie, NULL, NULL)
                                         != DMA_SUCCESS) {
diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index 6be317262200..ea5440dd10dc 100644
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -24,7 +24,6 @@
 
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/async_tx.h>
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/spinlock.h>
@@ -116,7 +115,7 @@ iop_adma_run_tx_complete_actions(struct iop_adma_desc_slot *desc,
         }
 
         /* run dependent operations */
-        async_tx_run_dependencies(&desc->async_tx);
+        dma_run_dependencies(&desc->async_tx);
 
         return cookie;
 }
@@ -270,8 +269,6 @@ static void __iop_adma_slot_cleanup(struct iop_adma_chan *iop_chan)
                         break;
         }
 
-        BUG_ON(!seen_current);
-
         if (cookie > 0) {
                 iop_chan->completed_cookie = cookie;
                 pr_debug("\tcompleted cookie %d\n", cookie);
@@ -471,8 +468,7 @@ static void iop_chan_start_null_xor(struct iop_adma_chan *iop_chan);
  * greater than 2x the number slots needed to satisfy a device->max_xor
  * request.
  * */
-static int iop_adma_alloc_chan_resources(struct dma_chan *chan,
-                                         struct dma_client *client)
+static int iop_adma_alloc_chan_resources(struct dma_chan *chan)
 {
         char *hw_desc;
         int idx;
@@ -866,7 +862,7 @@ static int __devinit iop_adma_memcpy_self_test(struct iop_adma_device *device)
         dma_chan = container_of(device->common.channels.next,
                                 struct dma_chan,
                                 device_node);
-        if (iop_adma_alloc_chan_resources(dma_chan, NULL) < 1) {
+        if (iop_adma_alloc_chan_resources(dma_chan) < 1) {
                 err = -ENODEV;
                 goto out;
         }
@@ -964,7 +960,7 @@ iop_adma_xor_zero_sum_self_test(struct iop_adma_device *device)
         dma_chan = container_of(device->common.channels.next,
                                 struct dma_chan,
                                 device_node);
-        if (iop_adma_alloc_chan_resources(dma_chan, NULL) < 1) {
+        if (iop_adma_alloc_chan_resources(dma_chan) < 1) {
                 err = -ENODEV;
                 goto out;
         }
@@ -1115,26 +1111,13 @@ static int __devexit iop_adma_remove(struct platform_device *dev)
         struct iop_adma_device *device = platform_get_drvdata(dev);
         struct dma_chan *chan, *_chan;
         struct iop_adma_chan *iop_chan;
-        int i;
         struct iop_adma_platform_data *plat_data = dev->dev.platform_data;
 
         dma_async_device_unregister(&device->common);
 
-        for (i = 0; i < 3; i++) {
-                unsigned int irq;
-                irq = platform_get_irq(dev, i);
-                free_irq(irq, device);
-        }
-
         dma_free_coherent(&dev->dev, plat_data->pool_size,
                         device->dma_desc_pool_virt, device->dma_desc_pool);
 
-        do {
-                struct resource *res;
-                res = platform_get_resource(dev, IORESOURCE_MEM, 0);
-                release_mem_region(res->start, res->end - res->start);
-        } while (0);
-
         list_for_each_entry_safe(chan, _chan, &device->common.channels,
                                 device_node) {
                 iop_chan = to_iop_adma_chan(chan);
@@ -1255,7 +1238,6 @@ static int __devinit iop_adma_probe(struct platform_device *pdev)
         spin_lock_init(&iop_chan->lock);
         INIT_LIST_HEAD(&iop_chan->chain);
         INIT_LIST_HEAD(&iop_chan->all_slots);
-        INIT_RCU_HEAD(&iop_chan->common.rcu);
         iop_chan->common.device = dma_dev;
         list_add_tail(&iop_chan->common.device_node, &dma_dev->channels);
 
@@ -1431,16 +1413,12 @@ static int __init iop_adma_init (void)
         return platform_driver_register(&iop_adma_driver);
 }
 
-/* it's currently unsafe to unload this module */
-#if 0
 static void __exit iop_adma_exit (void)
 {
         platform_driver_unregister(&iop_adma_driver);
         return;
 }
 module_exit(iop_adma_exit);
-#endif
-
 module_init(iop_adma_init);
 
 MODULE_AUTHOR("Intel Corporation");
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index bcda17426411..d35cbd1ff0b3 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -18,7 +18,6 @@
 
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/async_tx.h>
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/spinlock.h>
@@ -340,7 +339,7 @@ mv_xor_run_tx_complete_actions(struct mv_xor_desc_slot *desc,
         }
 
         /* run dependent operations */
-        async_tx_run_dependencies(&desc->async_tx);
+        dma_run_dependencies(&desc->async_tx);
 
         return cookie;
 }
@@ -607,8 +606,7 @@ submit_done:
 }
 
 /* returns the number of allocated descriptors */
-static int mv_xor_alloc_chan_resources(struct dma_chan *chan,
-                                       struct dma_client *client)
+static int mv_xor_alloc_chan_resources(struct dma_chan *chan)
 {
         char *hw_desc;
         int idx;
@@ -958,7 +956,7 @@ static int __devinit mv_xor_memcpy_self_test(struct mv_xor_device *device)
         dma_chan = container_of(device->common.channels.next,
                                 struct dma_chan,
                                 device_node);
-        if (mv_xor_alloc_chan_resources(dma_chan, NULL) < 1) {
+        if (mv_xor_alloc_chan_resources(dma_chan) < 1) {
                 err = -ENODEV;
                 goto out;
         }
@@ -1053,7 +1051,7 @@ mv_xor_xor_self_test(struct mv_xor_device *device)
         dma_chan = container_of(device->common.channels.next,
                                 struct dma_chan,
                                 device_node);
-        if (mv_xor_alloc_chan_resources(dma_chan, NULL) < 1) {
+        if (mv_xor_alloc_chan_resources(dma_chan) < 1) {
                 err = -ENODEV;
                 goto out;
         }
@@ -1221,7 +1219,6 @@ static int __devinit mv_xor_probe(struct platform_device *pdev)
         INIT_LIST_HEAD(&mv_chan->chain);
         INIT_LIST_HEAD(&mv_chan->completed_slots);
         INIT_LIST_HEAD(&mv_chan->all_slots);
-        INIT_RCU_HEAD(&mv_chan->common.rcu);
         mv_chan->common.device = dma_dev;
 
         list_add_tail(&mv_chan->common.device_node, &dma_dev->channels);
diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c
index 2f9e941968d6..d8f295bdad76 100644
--- a/drivers/ide/ide-acpi.c
+++ b/drivers/ide/ide-acpi.c
@@ -18,12 +18,6 @@
 #include <linux/dmi.h>
 
 #include <acpi/acpi_bus.h>
-#include <acpi/acnames.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acparser.h>
-#include <acpi/acexcep.h>
-#include <acpi/acmacros.h>
-#include <acpi/actypes.h>
 
 #define REGS_PER_GTF            7
 struct taskfile_array {
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 3949a1c73451..419c378bd24b 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -120,7 +120,7 @@ config TIFM_CORE
           cards are supported via 'MMC/SD Card support: TI Flash Media MMC/SD
           Interface support (MMC_TIFM_SD)'.
 
-          To compile this driver as a module, choose M here: the module will
+          To compile this driver as a module, choose M here: the module will
           be called tifm_core.
 
 config TIFM_7XX1
@@ -133,100 +133,9 @@ config TIFM_7XX1
           To make actual use of the device, you will have to select some
           flash card format drivers, as outlined in the TIFM_CORE Help.
 
-          To compile this driver as a module, choose M here: the module will
+          To compile this driver as a module, choose M here: the module will
           be called tifm_7xx1.
 
-config ACER_WMI
-        tristate "Acer WMI Laptop Extras (EXPERIMENTAL)"
-        depends on X86
-        depends on EXPERIMENTAL
-        depends on ACPI
-        depends on LEDS_CLASS
-        depends on NEW_LEDS
-        depends on BACKLIGHT_CLASS_DEVICE
-        depends on SERIO_I8042
-        depends on RFKILL
-        select ACPI_WMI
-        ---help---
-          This is a driver for newer Acer (and Wistron) laptops. It adds
-          wireless radio and bluetooth control, and on some laptops,
-          exposes the mail LED and LCD backlight.
-
-          For more information about this driver see
-          <file:Documentation/laptops/acer-wmi.txt>
-
-          If you have an ACPI-WMI compatible Acer/ Wistron laptop, say Y or M
-          here.
-
-config ASUS_LAPTOP
-        tristate "Asus Laptop Extras (EXPERIMENTAL)"
-        depends on X86
-        depends on ACPI
-        depends on EXPERIMENTAL && !ACPI_ASUS
-        depends on LEDS_CLASS
-        depends on NEW_LEDS
-        depends on BACKLIGHT_CLASS_DEVICE
-        ---help---
-          This is the new Linux driver for Asus laptops. It may also support some
-          MEDION, JVC or VICTOR laptops. It makes all the extra buttons generate
-          standard ACPI events that go through /proc/acpi/events. It also adds
-          support for video output switching, LCD backlight control, Bluetooth and
-          Wlan control, and most importantly, allows you to blink those fancy LEDs.
-
-          For more information and a userspace daemon for handling the extra
-          buttons see <http://acpi4asus.sf.net/>.
-
-          If you have an ACPI-compatible ASUS laptop, say Y or M here.
-
-config FUJITSU_LAPTOP
-        tristate "Fujitsu Laptop Extras"
-        depends on X86
-        depends on ACPI
-        depends on INPUT
-        depends on BACKLIGHT_CLASS_DEVICE
-        ---help---
-          This is a driver for laptops built by Fujitsu:
-
-            * P2xxx/P5xxx/S6xxx/S7xxx series Lifebooks
-            * Possibly other Fujitsu laptop models
-            * Tested with S6410 and S7020
-
-          It adds support for LCD brightness control and some hotkeys.
-
-          If you have a Fujitsu laptop, say Y or M here.
-
-config FUJITSU_LAPTOP_DEBUG
-        bool "Verbose debug mode for Fujitsu Laptop Extras"
-        depends on FUJITSU_LAPTOP
-        default n
-        ---help---
-          Enables extra debug output from the fujitsu extras driver, at the
-          expense of a slight increase in driver size.
-
-          If you are not sure, say N here.
-
-config TC1100_WMI
-        tristate "HP Compaq TC1100 Tablet WMI Extras (EXPERIMENTAL)"
-        depends on X86 && !X86_64
-        depends on EXPERIMENTAL
-        depends on ACPI
-        select ACPI_WMI
-        ---help---
-          This is a driver for the WMI extensions (wireless and bluetooth power
-          control) of the HP Compaq TC1100 tablet.
-
-config HP_WMI
-       tristate "HP WMI extras"
-       depends on ACPI_WMI
-       depends on INPUT
-       depends on RFKILL
-       help
-         Say Y here if you want to support WMI-based hotkeys on HP laptops and
-         to read data from WMI such as docking or ambient light sensor state.
-
-         To compile this driver as a module, choose M here: the module will
-         be called hp-wmi.
-
 config ICS932S401
         tristate "Integrated Circuits ICS932S401"
         depends on I2C && EXPERIMENTAL
@@ -237,170 +146,6 @@ config ICS932S401
           This driver can also be built as a module. If so, the module
           will be called ics932s401.
 
-config MSI_LAPTOP
-        tristate "MSI Laptop Extras"
-        depends on X86
-        depends on ACPI
-        depends on BACKLIGHT_CLASS_DEVICE
-        ---help---
-          This is a driver for laptops built by MSI (MICRO-STAR
-          INTERNATIONAL):
-
-          MSI MegaBook S270 (MS-1013)
-          Cytron/TCM/Medion/Tchibo MD96100/SAM2000
-
-          It adds support for Bluetooth, WLAN and LCD brightness control.
-
-          More information about this driver is available at
-          <http://0pointer.de/lennart/tchibo.html>.
-
-          If you have an MSI S270 laptop, say Y or M here.
-
-config PANASONIC_LAPTOP
-        tristate "Panasonic Laptop Extras"
-        depends on X86 && INPUT && ACPI
-        depends on BACKLIGHT_CLASS_DEVICE
-        ---help---
-          This driver adds support for access to backlight control and hotkeys
-          on Panasonic Let's Note laptops.
-
-          If you have a Panasonic Let's note laptop (such as the R1(N variant),
-          R2, R3, R5, T2, W2 and Y2 series), say Y.
-
-config COMPAL_LAPTOP
-        tristate "Compal Laptop Extras"
-        depends on X86
-        depends on ACPI
-        depends on BACKLIGHT_CLASS_DEVICE
-        ---help---
-          This is a driver for laptops built by Compal:
-
-          Compal FL90/IFL90
-          Compal FL91/IFL91
-          Compal FL92/JFL92
-          Compal FT00/IFT00
-
-          It adds support for Bluetooth, WLAN and LCD brightness control.
-
-          If you have an Compal FL9x/IFL9x/FT00 laptop, say Y or M here.
-
-config SONY_LAPTOP
-        tristate "Sony Laptop Extras"
-        depends on X86 && ACPI
-        select BACKLIGHT_CLASS_DEVICE
-        depends on INPUT
-          ---help---
-          This mini-driver drives the SNC and SPIC devices present in the ACPI
-          BIOS of the Sony Vaio laptops.
-
-          It gives access to some extra laptop functionalities like Bluetooth,
-          screen brightness control, Fn keys and allows powering on/off some
-          devices.
-
-          Read <file:Documentation/laptops/sony-laptop.txt> for more information.
-
-config SONYPI_COMPAT
-        bool "Sonypi compatibility"
-        depends on SONY_LAPTOP
-          ---help---
-          Build the sonypi driver compatibility code into the sony-laptop driver.
-
-config THINKPAD_ACPI
-        tristate "ThinkPad ACPI Laptop Extras"
-        depends on X86 && ACPI
-        select BACKLIGHT_LCD_SUPPORT
-        select BACKLIGHT_CLASS_DEVICE
-        select HWMON
-        select NVRAM
-        select INPUT
-        select NEW_LEDS
-        select LEDS_CLASS
-        select NET
-        select RFKILL
-        ---help---
-          This is a driver for the IBM and Lenovo ThinkPad laptops. It adds
-          support for Fn-Fx key combinations, Bluetooth control, video
-          output switching, ThinkLight control, UltraBay eject and more.
-          For more information about this driver see
-          <file:Documentation/laptops/thinkpad-acpi.txt> and
-          <http://ibm-acpi.sf.net/> .
-
-          This driver was formerly known as ibm-acpi.
-
-          If you have an IBM or Lenovo ThinkPad laptop, say Y or M here.
-
-config THINKPAD_ACPI_DEBUG
-        bool "Verbose debug mode"
-        depends on THINKPAD_ACPI
-        default n
-        ---help---
-          Enables extra debugging information, at the expense of a slightly
-          increase in driver size.
-
-          If you are not sure, say N here.
-
-config THINKPAD_ACPI_DOCK
-        bool "Legacy Docking Station Support"
-        depends on THINKPAD_ACPI
-        depends on ACPI_DOCK=n
-        default n
-        ---help---
-          Allows the thinkpad_acpi driver to handle docking station events.
-          This support was made obsolete by the generic ACPI docking station
-          support (CONFIG_ACPI_DOCK).  It will allow locking and removing the
-          laptop from the docking station, but will not properly connect PCI
-          devices.
-
-          If you are not sure, say N here.
-
-config THINKPAD_ACPI_BAY
-        bool "Legacy Removable Bay Support"
-        depends on THINKPAD_ACPI
-        default y
-        ---help---
-          Allows the thinkpad_acpi driver to handle removable bays.  It will
-          electrically disable the device in the bay, and also generate
-          notifications when the bay lever is ejected or inserted.
-
-          If you are not sure, say Y here.
-
-config THINKPAD_ACPI_VIDEO
-        bool "Video output control support"
-        depends on THINKPAD_ACPI
-        default y
-        ---help---
-          Allows the thinkpad_acpi driver to provide an interface to control
-          the various video output ports.
-
-          This feature often won't work well, depending on ThinkPad model,
-          display state, video output devices in use, whether there is a X
-          server running, phase of the moon, and the current mood of
-          Schroedinger's cat.  If you can use X.org's RandR to control
-          your ThinkPad's video output ports instead of this feature,
-          don't think twice: do it and say N here to save some memory.
-
-          If you are not sure, say Y here.
-
-config THINKPAD_ACPI_HOTKEY_POLL
-        bool "Support NVRAM polling for hot keys"
-        depends on THINKPAD_ACPI
-        default y
-        ---help---
-          Some thinkpad models benefit from NVRAM polling to detect a few of
-          the hot key press events.  If you know your ThinkPad model does not
-          need to do NVRAM polling to support any of the hot keys you use,
-          unselecting this option will save about 1kB of memory.
-
-          ThinkPads T40 and newer, R52 and newer, and X31 and newer are
-          unlikely to need NVRAM polling in their latest BIOS versions.
-
-          NVRAM polling can detect at most the following keys: ThinkPad/Access
-          IBM, Zoom, Switch Display (fn+F7), ThinkLight, Volume up/down/mute,
-          Brightness up/down, Display Expand (fn+F8), Hibernate (fn+F12).
-
-          If you are not sure, say Y here.  The driver enables polling only if
-          it is strictly necessary to do so.
-
 config ATMEL_SSC
         tristate "Device driver for Atmel SSC peripheral"
         depends on AVR32 || ARCH_AT91
@@ -413,31 +158,6 @@ config ATMEL_SSC
 
           If unsure, say N.
 
-config INTEL_MENLOW
-        tristate "Thermal Management driver for Intel menlow platform"
-        depends on ACPI_THERMAL
-        select THERMAL
-        depends on X86
-        ---help---
-          ACPI thermal management enhancement driver on
-          Intel Menlow platform.
-
-          If unsure, say N.
-
-config EEEPC_LAPTOP
-        tristate "Eee PC Hotkey Driver (EXPERIMENTAL)"
-        depends on X86
-        depends on ACPI
-        depends on BACKLIGHT_CLASS_DEVICE
-        depends on HWMON
-        depends on EXPERIMENTAL
-        depends on RFKILL
-        ---help---
-          This driver supports the Fn-Fx keys on Eee PC laptops.
-          It also adds the ability to switch camera/wlan on/off.
-
-          If you have an Eee PC laptop, say Y or M here.
-
 config ENCLOSURE_SERVICES
         tristate "Enclosure Services"
         default n
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 5de863a0e395..9cf8ae6e4b39 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -1,33 +1,20 @@
 #
 # Makefile for misc devices that really don't fit anywhere else.
 #
-obj- := misc.o  # Dummy rule to force built-in.o to be made
 
 obj-$(CONFIG_IBM_ASM)           += ibmasm/
 obj-$(CONFIG_HDPU_FEATURES)     += hdpuftrs/
-obj-$(CONFIG_ASUS_LAPTOP)       += asus-laptop.o
-obj-$(CONFIG_EEEPC_LAPTOP)      += eeepc-laptop.o
-obj-$(CONFIG_MSI_LAPTOP)        += msi-laptop.o
-obj-$(CONFIG_COMPAL_LAPTOP)     += compal-laptop.o
-obj-$(CONFIG_ACER_WMI)          += acer-wmi.o
 obj-$(CONFIG_ATMEL_PWM)         += atmel_pwm.o
 obj-$(CONFIG_ATMEL_SSC)         += atmel-ssc.o
 obj-$(CONFIG_ATMEL_TCLIB)       += atmel_tclib.o
-obj-$(CONFIG_HP_WMI)            += hp-wmi.o
 obj-$(CONFIG_ICS932S401)        += ics932s401.o
-obj-$(CONFIG_TC1100_WMI)        += tc1100-wmi.o
 obj-$(CONFIG_LKDTM)             += lkdtm.o
 obj-$(CONFIG_TIFM_CORE)         += tifm_core.o
 obj-$(CONFIG_DELL_LAPTOP)       += dell-laptop.o
 obj-$(CONFIG_TIFM_7XX1)         += tifm_7xx1.o
 obj-$(CONFIG_PHANTOM)           += phantom.o
 obj-$(CONFIG_SGI_IOC4)          += ioc4.o
-obj-$(CONFIG_SONY_LAPTOP)       += sony-laptop.o
-obj-$(CONFIG_THINKPAD_ACPI)     += thinkpad_acpi.o
-obj-$(CONFIG_FUJITSU_LAPTOP)    += fujitsu-laptop.o
-obj-$(CONFIG_PANASONIC_LAPTOP)  += panasonic-laptop.o
 obj-$(CONFIG_EEPROM_93CX6)      += eeprom_93cx6.o
-obj-$(CONFIG_INTEL_MENLOW)      += intel_menlow.o
 obj-$(CONFIG_ENCLOSURE_SERVICES) += enclosure.o
 obj-$(CONFIG_KGDB_TESTS)        += kgdbts.o
 obj-$(CONFIG_SGI_XP)            += sgi-xp/
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 1e97916914ad..76bfe16c09b1 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -55,7 +55,6 @@ enum atmel_mci_state {
 
 struct atmel_mci_dma {
 #ifdef CONFIG_MMC_ATMELMCI_DMA
-        struct dma_client               client;
         struct dma_chan                 *chan;
         struct dma_async_tx_descriptor  *data_desc;
 #endif
@@ -593,10 +592,8 @@ atmci_submit_data_dma(struct atmel_mci *host, struct mmc_data *data)
 
         /* If we don't have a channel, we can't do DMA */
         chan = host->dma.chan;
-        if (chan) {
-                dma_chan_get(chan);
+        if (chan)
                 host->data_chan = chan;
-        }
 
         if (!chan)
                 return -ENODEV;
@@ -1443,60 +1440,6 @@ static irqreturn_t atmci_detect_interrupt(int irq, void *dev_id)
         return IRQ_HANDLED;
 }
 
-#ifdef CONFIG_MMC_ATMELMCI_DMA
-
-static inline struct atmel_mci *
-dma_client_to_atmel_mci(struct dma_client *client)
-{
-        return container_of(client, struct atmel_mci, dma.client);
-}
-
-static enum dma_state_client atmci_dma_event(struct dma_client *client,
-                struct dma_chan *chan, enum dma_state state)
-{
-        struct atmel_mci        *host;
-        enum dma_state_client   ret = DMA_NAK;
-
-        host = dma_client_to_atmel_mci(client);
-
-        switch (state) {
-        case DMA_RESOURCE_AVAILABLE:
-                spin_lock_bh(&host->lock);
-                if (!host->dma.chan) {
-                        host->dma.chan = chan;
-                        ret = DMA_ACK;
-                }
-                spin_unlock_bh(&host->lock);
-
-                if (ret == DMA_ACK)
-                        dev_info(&host->pdev->dev,
-                                        "Using %s for DMA transfers\n",
-                                        chan->dev.bus_id);
-                break;
-
-        case DMA_RESOURCE_REMOVED:
-                spin_lock_bh(&host->lock);
-                if (host->dma.chan == chan) {
-                        host->dma.chan = NULL;
-                        ret = DMA_ACK;
-                }
-                spin_unlock_bh(&host->lock);
-
-                if (ret == DMA_ACK)
-                        dev_info(&host->pdev->dev,
-                                        "Lost %s, falling back to PIO\n",
-                                        chan->dev.bus_id);
-                break;
-
-        default:
-                break;
-        }
-
-
-        return ret;
-}
-#endif /* CONFIG_MMC_ATMELMCI_DMA */
-
 static int __init atmci_init_slot(struct atmel_mci *host,
                 struct mci_slot_pdata *slot_data, unsigned int id,
                 u32 sdc_reg)
@@ -1600,6 +1543,18 @@ static void __exit atmci_cleanup_slot(struct atmel_mci_slot *slot,
         mmc_free_host(slot->mmc);
 }
 
+#ifdef CONFIG_MMC_ATMELMCI_DMA
+static bool filter(struct dma_chan *chan, void *slave)
+{
+        struct dw_dma_slave *dws = slave;
+
+        if (dws->dma_dev == chan->device->dev)
+                return true;
+        else
+                return false;
+}
+#endif
+
 static int __init atmci_probe(struct platform_device *pdev)
 {
         struct mci_platform_data        *pdata;
@@ -1652,22 +1607,20 @@ static int __init atmci_probe(struct platform_device *pdev)
                 goto err_request_irq;
 
 #ifdef CONFIG_MMC_ATMELMCI_DMA
-        if (pdata->dma_slave) {
-                struct dma_slave *slave = pdata->dma_slave;
+        if (pdata->dma_slave.dma_dev) {
+                struct dw_dma_slave *dws = &pdata->dma_slave;
+                dma_cap_mask_t mask;
 
-                slave->tx_reg = regs->start + MCI_TDR;
-                slave->rx_reg = regs->start + MCI_RDR;
+                dws->tx_reg = regs->start + MCI_TDR;
+                dws->rx_reg = regs->start + MCI_RDR;
 
                 /* Try to grab a DMA channel */
-                host->dma.client.event_callback = atmci_dma_event;
-                dma_cap_set(DMA_SLAVE, host->dma.client.cap_mask);
-                host->dma.client.slave = slave;
-
-                dma_async_client_register(&host->dma.client);
-                dma_async_client_chan_request(&host->dma.client);
-        } else {
-                dev_notice(&pdev->dev, "DMA not available, using PIO\n");
+                dma_cap_zero(mask);
+                dma_cap_set(DMA_SLAVE, mask);
+                host->dma.chan = dma_request_channel(mask, filter, dws);
         }
+        if (!host->dma.chan)
+                dev_notice(&pdev->dev, "DMA not available, using PIO\n");
 #endif /* CONFIG_MMC_ATMELMCI_DMA */
 
         platform_set_drvdata(pdev, host);
@@ -1699,8 +1652,8 @@ static int __init atmci_probe(struct platform_device *pdev)
 
 err_init_slot:
 #ifdef CONFIG_MMC_ATMELMCI_DMA
-        if (pdata->dma_slave)
-                dma_async_client_unregister(&host->dma.client);
+        if (host->dma.chan)
+                dma_release_channel(host->dma.chan);
 #endif
         free_irq(irq, host);
 err_request_irq:
@@ -1731,8 +1684,8 @@ static int __exit atmci_remove(struct platform_device *pdev)
         clk_disable(host->mck);
 
 #ifdef CONFIG_MMC_ATMELMCI_DMA
-        if (host->dma.client.slave)
-                dma_async_client_unregister(&host->dma.client);
+        if (host->dma.chan)
+                dma_release_channel(host->dma.chan);
 #endif
 
         free_irq(platform_get_irq(pdev, 0), host);
@@ -1761,7 +1714,7 @@ static void __exit atmci_exit(void)
         platform_driver_unregister(&atmci_driver);
 }
 
-module_init(atmci_init);
+late_initcall(atmci_init); /* try to load after dma driver when built-in */
 module_exit(atmci_exit);
 
 MODULE_DESCRIPTION("Atmel Multimedia Card Interface driver");
diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig
index a90d50c2c3e5..7d04fb9ddcaa 100644
--- a/drivers/mtd/Kconfig
+++ b/drivers/mtd/Kconfig
@@ -45,6 +45,14 @@ config MTD_PARTITIONS
           devices. Partitioning on NFTL 'devices' is a different - that's the
           'normal' form of partitioning used on a block device.
 
+config MTD_TESTS
+        tristate "MTD tests support"
+        depends on m
+        help
+          This option includes various MTD tests into compilation. The tests
+          should normally be compiled as kernel modules. The modules perform
+          various checks and verifications when loaded.
+
 config MTD_REDBOOT_PARTS
         tristate "RedBoot partition table parsing"
         depends on MTD_PARTITIONS
@@ -316,6 +324,8 @@ source "drivers/mtd/nand/Kconfig"
 
 source "drivers/mtd/onenand/Kconfig"
 
+source "drivers/mtd/lpddr/Kconfig"
+
 source "drivers/mtd/ubi/Kconfig"
 
 endif # MTD
diff --git a/drivers/mtd/Makefile b/drivers/mtd/Makefile
index 4b77335715f0..4521b1ecce45 100644
--- a/drivers/mtd/Makefile
+++ b/drivers/mtd/Makefile
@@ -29,6 +29,6 @@ obj-$(CONFIG_MTD_OOPS)		+= mtdoops.o
 nftl-objs               := nftlcore.o nftlmount.o
 inftl-objs              := inftlcore.o inftlmount.o
 
-obj-y           += chips/ maps/ devices/ nand/ onenand/
+obj-y           += chips/ lpddr/ maps/ devices/ nand/ onenand/ tests/
 
 obj-$(CONFIG_MTD_UBI)           += ubi/
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index c93a8be5d5f1..f5ab6fa1057b 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -58,8 +58,8 @@ static int cfi_intelext_write_buffers(struct mtd_info *, loff_t, size_t, size_t
 static int cfi_intelext_writev(struct mtd_info *, const struct kvec *, unsigned long, loff_t, size_t *);
 static int cfi_intelext_erase_varsize(struct mtd_info *, struct erase_info *);
 static void cfi_intelext_sync (struct mtd_info *);
-static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, size_t len);
-static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, size_t len);
+static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
 #ifdef CONFIG_MTD_OTP
 static int cfi_intelext_read_fact_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
 static int cfi_intelext_read_user_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
@@ -558,8 +558,8 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd)
         }
 
         for (i=0; i<mtd->numeraseregions;i++){
-                printk(KERN_DEBUG "erase region %d: offset=0x%x,size=0x%x,blocks=%d\n",
-                       i,mtd->eraseregions[i].offset,
+                printk(KERN_DEBUG "erase region %d: offset=0x%llx,size=0x%x,blocks=%d\n",
+                       i,(unsigned long long)mtd->eraseregions[i].offset,
                        mtd->eraseregions[i].erasesize,
                        mtd->eraseregions[i].numblocks);
         }
@@ -2058,7 +2058,7 @@ out:	put_chip(map, chip, adr);
         return ret;
 }
 
-static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         int ret;
 
@@ -2082,7 +2082,7 @@ static int cfi_intelext_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
         return ret;
 }
 
-static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int cfi_intelext_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         int ret;
 
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index d74ec46aa032..94bb61e19047 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -71,8 +71,8 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
 static void put_chip(struct map_info *map, struct flchip *chip, unsigned long adr);
 #include "fwh_lock.h"
 
-static int cfi_atmel_lock(struct mtd_info *mtd, loff_t ofs, size_t len);
-static int cfi_atmel_unlock(struct mtd_info *mtd, loff_t ofs, size_t len);
+static int cfi_atmel_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+static int cfi_atmel_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
 
 static struct mtd_chip_driver cfi_amdstd_chipdrv = {
         .probe          = NULL, /* Not usable directly */
@@ -322,6 +322,14 @@ static struct cfi_fixup fixup_table[] = {
 };
 
 
+static void cfi_fixup_major_minor(struct cfi_private *cfi,
+                                  struct cfi_pri_amdstd *extp)
+{
+        if (cfi->mfr == CFI_MFR_SAMSUNG && cfi->id == 0x257e &&
+            extp->MajorVersion == '0')
+                extp->MajorVersion = '1';
+}
+
 struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
 {
         struct cfi_private *cfi = map->fldrv_priv;
@@ -363,6 +371,8 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
                         return NULL;
                 }
 
+                cfi_fixup_major_minor(cfi, extp);
+
                 if (extp->MajorVersion != '1' ||
                     (extp->MinorVersion < '0' || extp->MinorVersion > '4')) {
                         printk(KERN_ERR "  Unknown Amd/Fujitsu Extended Query "
@@ -1774,12 +1784,12 @@ out_unlock:
         return ret;
 }
 
-static int cfi_atmel_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int cfi_atmel_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         return cfi_varsize_frob(mtd, do_atmel_lock, ofs, len, NULL);
 }
 
-static int cfi_atmel_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int cfi_atmel_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         return cfi_varsize_frob(mtd, do_atmel_unlock, ofs, len, NULL);
 }
diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c
index d4714dd9f7ab..6c740f346f91 100644
--- a/drivers/mtd/chips/cfi_cmdset_0020.c
+++ b/drivers/mtd/chips/cfi_cmdset_0020.c
@@ -42,8 +42,8 @@ static int cfi_staa_writev(struct mtd_info *mtd, const struct kvec *vecs,
                 unsigned long count, loff_t to, size_t *retlen);
 static int cfi_staa_erase_varsize(struct mtd_info *, struct erase_info *);
 static void cfi_staa_sync (struct mtd_info *);
-static int cfi_staa_lock(struct mtd_info *mtd, loff_t ofs, size_t len);
-static int cfi_staa_unlock(struct mtd_info *mtd, loff_t ofs, size_t len);
+static int cfi_staa_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+static int cfi_staa_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
 static int cfi_staa_suspend (struct mtd_info *);
 static void cfi_staa_resume (struct mtd_info *);
 
@@ -221,8 +221,8 @@ static struct mtd_info *cfi_staa_setup(struct map_info *map)
                 }
 
                 for (i=0; i<mtd->numeraseregions;i++){
-                        printk(KERN_DEBUG "%d: offset=0x%x,size=0x%x,blocks=%d\n",
-                               i,mtd->eraseregions[i].offset,
+                        printk(KERN_DEBUG "%d: offset=0x%llx,size=0x%x,blocks=%d\n",
+                               i, (unsigned long long)mtd->eraseregions[i].offset,
                                mtd->eraseregions[i].erasesize,
                                mtd->eraseregions[i].numblocks);
                 }
@@ -964,7 +964,7 @@ static int cfi_staa_erase_varsize(struct mtd_info *mtd,
                 adr += regions[i].erasesize;
                 len -= regions[i].erasesize;
 
-                if (adr % (1<< cfi->chipshift) == ((regions[i].offset + (regions[i].erasesize * regions[i].numblocks)) %( 1<< cfi->chipshift)))
+                if (adr % (1<< cfi->chipshift) == (((unsigned long)regions[i].offset + (regions[i].erasesize * regions[i].numblocks)) %( 1<< cfi->chipshift)))
                         i++;
 
                 if (adr >> cfi->chipshift) {
@@ -1135,7 +1135,7 @@ retry:
         spin_unlock_bh(chip->mutex);
         return 0;
 }
-static int cfi_staa_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int cfi_staa_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct map_info *map = mtd->priv;
         struct cfi_private *cfi = map->fldrv_priv;
@@ -1284,7 +1284,7 @@ retry:
         spin_unlock_bh(chip->mutex);
         return 0;
 }
-static int cfi_staa_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int cfi_staa_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct map_info *map = mtd->priv;
         struct cfi_private *cfi = map->fldrv_priv;
diff --git a/drivers/mtd/chips/fwh_lock.h b/drivers/mtd/chips/fwh_lock.h
index ab44f2b996f8..57e0e4e921f9 100644
--- a/drivers/mtd/chips/fwh_lock.h
+++ b/drivers/mtd/chips/fwh_lock.h
@@ -77,7 +77,7 @@ static int fwh_xxlock_oneblock(struct map_info *map, struct flchip *chip,
 }
 
 
-static int fwh_lock_varsize(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int fwh_lock_varsize(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         int ret;
 
@@ -88,7 +88,7 @@ static int fwh_lock_varsize(struct mtd_info *mtd, loff_t ofs, size_t len)
 }
 
 
-static int fwh_unlock_varsize(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int fwh_unlock_varsize(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         int ret;
 
diff --git a/drivers/mtd/devices/lart.c b/drivers/mtd/devices/lart.c
index f4bda4cee495..578de1c67bfe 100644
--- a/drivers/mtd/devices/lart.c
+++ b/drivers/mtd/devices/lart.c
@@ -619,7 +619,7 @@ static struct mtd_partition lart_partitions[] = {
 };
 #endif
 
-int __init lart_flash_init (void)
+static int __init lart_flash_init (void)
 {
    int result;
    memset (&mtd,0,sizeof (mtd));
@@ -690,7 +690,7 @@ int __init lart_flash_init (void)
    return (result);
 }
 
-void __exit lart_flash_exit (void)
+static void __exit lart_flash_exit (void)
 {
 #ifndef HAVE_PARTITIONS
    del_mtd_device (&mtd);
@@ -705,5 +705,3 @@ module_exit (lart_flash_exit);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Abraham vd Merwe <abraham@2d3d.co.za>");
 MODULE_DESCRIPTION("MTD driver for Intel 28F160F3 on LART board");
-
-
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 5733f0643843..7c3fc766dcf1 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -20,6 +20,7 @@
 #include <linux/device.h>
 #include <linux/interrupt.h>
 #include <linux/mutex.h>
+#include <linux/math64.h>
 
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
@@ -169,9 +170,9 @@ static int wait_till_ready(struct m25p *flash)
  */
 static int erase_chip(struct m25p *flash)
 {
-        DEBUG(MTD_DEBUG_LEVEL3, "%s: %s %dKiB\n",
-                        dev_name(&flash->spi->dev), __func__,
-                        flash->mtd.size / 1024);
+        DEBUG(MTD_DEBUG_LEVEL3, "%s: %s %lldKiB\n",
+              dev_name(&flash->spi->dev), __func__,
+              (long long)(flash->mtd.size >> 10));
 
         /* Wait until finished previous write command. */
         if (wait_till_ready(flash))
@@ -232,18 +233,18 @@ static int m25p80_erase(struct mtd_info *mtd, struct erase_info *instr)
 {
         struct m25p *flash = mtd_to_m25p(mtd);
         u32 addr,len;
+        uint32_t rem;
 
-        DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%08x, len %d\n",
-                        dev_name(&flash->spi->dev), __func__, "at",
-                        (u32)instr->addr, instr->len);
+        DEBUG(MTD_DEBUG_LEVEL2, "%s: %s %s 0x%llx, len %lld\n",
+              dev_name(&flash->spi->dev), __func__, "at",
+              (long long)instr->addr, (long long)instr->len);
 
         /* sanity checks */
         if (instr->addr + instr->len > flash->mtd.size)
                 return -EINVAL;
-        if ((instr->addr % mtd->erasesize) != 0
-                        || (instr->len % mtd->erasesize) != 0) {
+        div_u64_rem(instr->len, mtd->erasesize, &rem);
+        if (rem)
                 return -EINVAL;
-        }
 
         addr = instr->addr;
         len = instr->len;
@@ -677,24 +678,24 @@ static int __devinit m25p_probe(struct spi_device *spi)
                 flash->mtd.erasesize = info->sector_size;
         }
 
-        dev_info(&spi->dev, "%s (%d Kbytes)\n", info->name,
-                        flash->mtd.size / 1024);
+        dev_info(&spi->dev, "%s (%lld Kbytes)\n", info->name,
+                        (long long)flash->mtd.size >> 10);
 
         DEBUG(MTD_DEBUG_LEVEL2,
-                "mtd .name = %s, .size = 0x%.8x (%uMiB) "
+                "mtd .name = %s, .size = 0x%llx (%lldMiB) "
                         ".erasesize = 0x%.8x (%uKiB) .numeraseregions = %d\n",
                 flash->mtd.name,
-                flash->mtd.size, flash->mtd.size / (1024*1024),
+                (long long)flash->mtd.size, (long long)(flash->mtd.size >> 20),
                 flash->mtd.erasesize, flash->mtd.erasesize / 1024,
                 flash->mtd.numeraseregions);
 
         if (flash->mtd.numeraseregions)
                 for (i = 0; i < flash->mtd.numeraseregions; i++)
                         DEBUG(MTD_DEBUG_LEVEL2,
-                                "mtd.eraseregions[%d] = { .offset = 0x%.8x, "
+                                "mtd.eraseregions[%d] = { .offset = 0x%llx, "
                                 ".erasesize = 0x%.8x (%uKiB), "
                                 ".numblocks = %d }\n",
-                                i, flash->mtd.eraseregions[i].offset,
+                                i, (long long)flash->mtd.eraseregions[i].offset,
                                 flash->mtd.eraseregions[i].erasesize,
                                 flash->mtd.eraseregions[i].erasesize / 1024,
                                 flash->mtd.eraseregions[i].numblocks);
@@ -722,12 +723,12 @@ static int __devinit m25p_probe(struct spi_device *spi)
                 if (nr_parts > 0) {
                         for (i = 0; i < nr_parts; i++) {
                                 DEBUG(MTD_DEBUG_LEVEL2, "partitions[%d] = "
-                                        "{.name = %s, .offset = 0x%.8x, "
-                                                ".size = 0x%.8x (%uKiB) }\n",
+                                        "{.name = %s, .offset = 0x%llx, "
+                                                ".size = 0x%llx (%lldKiB) }\n",
                                         i, parts[i].name,
-                                        parts[i].offset,
-                                        parts[i].size,
-                                        parts[i].size / 1024);
+                                        (long long)parts[i].offset,
+                                        (long long)parts[i].size,
+                                        (long long)(parts[i].size >> 10));
                         }
                         flash->partitioned = 1;
                         return add_mtd_partitions(&flash->mtd, parts, nr_parts);
diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
index 65126cd668ff..d44f741ae229 100644
--- a/drivers/mtd/devices/mtd_dataflash.c
+++ b/drivers/mtd/devices/mtd_dataflash.c
@@ -16,6 +16,7 @@
 #include <linux/device.h>
 #include <linux/mutex.h>
 #include <linux/err.h>
+#include <linux/math64.h>
 
 #include <linux/spi/spi.h>
 #include <linux/spi/flash.h>
@@ -152,15 +153,20 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
         struct spi_message      msg;
         unsigned                blocksize = priv->page_size << 3;
         uint8_t                 *command;
+        uint32_t                rem;
 
-        DEBUG(MTD_DEBUG_LEVEL2, "%s: erase addr=0x%x len 0x%x\n",
-                        dev_name(&spi->dev),
-                        instr->addr, instr->len);
+        DEBUG(MTD_DEBUG_LEVEL2, "%s: erase addr=0x%llx len 0x%llx\n",
+              dev_name(&spi->dev), (long long)instr->addr,
+              (long long)instr->len);
 
         /* Sanity checks */
-        if ((instr->addr + instr->len) > mtd->size
-                        || (instr->len % priv->page_size) != 0
-                        || (instr->addr % priv->page_size) != 0)
+        if (instr->addr + instr->len > mtd->size)
+                return -EINVAL;
+        div_u64_rem(instr->len, priv->page_size, &rem);
+        if (rem)
+                return -EINVAL;
+        div_u64_rem(instr->addr, priv->page_size, &rem);
+        if (rem)
                 return -EINVAL;
 
         spi_message_init(&msg);
@@ -178,7 +184,7 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
                 /* Calculate flash page address; use block erase (for speed) if
                  * we're at a block boundary and need to erase the whole block.
                  */
-                pageaddr = instr->addr / priv->page_size;
+                pageaddr = div_u64(instr->len, priv->page_size);
                 do_block = (pageaddr & 0x7) == 0 && instr->len >= blocksize;
                 pageaddr = pageaddr << priv->page_offset;
 
@@ -667,8 +673,8 @@ add_dataflash_otp(struct spi_device *spi, char *name,
         if (revision >= 'c')
                 otp_tag = otp_setup(device, revision);
 
-        dev_info(&spi->dev, "%s (%d KBytes) pagesize %d bytes%s\n",
-                        name, DIV_ROUND_UP(device->size, 1024),
+        dev_info(&spi->dev, "%s (%lld KBytes) pagesize %d bytes%s\n",
+                        name, (long long)((device->size + 1023) >> 10),
                         pagesize, otp_tag);
         dev_set_drvdata(&spi->dev, priv);
 
diff --git a/drivers/mtd/ftl.c b/drivers/mtd/ftl.c
index 9bf581c4f740..a790c062af1f 100644
--- a/drivers/mtd/ftl.c
+++ b/drivers/mtd/ftl.c
@@ -109,25 +109,25 @@ module_param(shuffle_freq, int, 0);
 /* Each memory region corresponds to a minor device */
 typedef struct partition_t {
     struct mtd_blktrans_dev mbd;
-    u_int32_t           state;
-    u_int32_t           *VirtualBlockMap;
-    u_int32_t           *VirtualPageMap;
-    u_int32_t           FreeTotal;
+    uint32_t            state;
+    uint32_t            *VirtualBlockMap;
+    uint32_t            *VirtualPageMap;
+    uint32_t            FreeTotal;
     struct eun_info_t {
-        u_int32_t               Offset;
-        u_int32_t               EraseCount;
-        u_int32_t               Free;
-        u_int32_t               Deleted;
+        uint32_t                Offset;
+        uint32_t                EraseCount;
+        uint32_t                Free;
+        uint32_t                Deleted;
     } *EUNInfo;
     struct xfer_info_t {
-        u_int32_t               Offset;
-        u_int32_t               EraseCount;
-        u_int16_t               state;
+        uint32_t                Offset;
+        uint32_t                EraseCount;
+        uint16_t                state;
     } *XferInfo;
-    u_int16_t           bam_index;
-    u_int32_t           *bam_cache;
-    u_int16_t           DataUnits;
-    u_int32_t           BlocksPerUnit;
+    uint16_t            bam_index;
+    uint32_t            *bam_cache;
+    uint16_t            DataUnits;
+    uint32_t            BlocksPerUnit;
     erase_unit_header_t header;
 } partition_t;
 
@@ -199,8 +199,8 @@ static int scan_header(partition_t *part)
 static int build_maps(partition_t *part)
 {
     erase_unit_header_t header;
-    u_int16_t xvalid, xtrans, i;
-    u_int blocks, j;
+    uint16_t xvalid, xtrans, i;
+    unsigned blocks, j;
     int hdr_ok, ret = -1;
     ssize_t retval;
     loff_t offset;
@@ -269,14 +269,14 @@ static int build_maps(partition_t *part)
 
     /* Set up virtual page map */
     blocks = le32_to_cpu(header.FormattedSize) >> header.BlockSize;
-    part->VirtualBlockMap = vmalloc(blocks * sizeof(u_int32_t));
+    part->VirtualBlockMap = vmalloc(blocks * sizeof(uint32_t));
     if (!part->VirtualBlockMap)
             goto out_XferInfo;
 
-    memset(part->VirtualBlockMap, 0xff, blocks * sizeof(u_int32_t));
+    memset(part->VirtualBlockMap, 0xff, blocks * sizeof(uint32_t));
     part->BlocksPerUnit = (1 << header.EraseUnitSize) >> header.BlockSize;
 
-    part->bam_cache = kmalloc(part->BlocksPerUnit * sizeof(u_int32_t),
+    part->bam_cache = kmalloc(part->BlocksPerUnit * sizeof(uint32_t),
                               GFP_KERNEL);
     if (!part->bam_cache)
             goto out_VirtualBlockMap;
@@ -290,7 +290,7 @@ static int build_maps(partition_t *part)
         offset = part->EUNInfo[i].Offset + le32_to_cpu(header.BAMOffset);
 
         ret = part->mbd.mtd->read(part->mbd.mtd, offset,
-                              part->BlocksPerUnit * sizeof(u_int32_t), &retval,
+                              part->BlocksPerUnit * sizeof(uint32_t), &retval,
                               (unsigned char *)part->bam_cache);
 
         if (ret)
@@ -332,7 +332,7 @@ out:
 ======================================================================*/
 
 static int erase_xfer(partition_t *part,
-                      u_int16_t xfernum)
+                      uint16_t xfernum)
 {
     int ret;
     struct xfer_info_t *xfer;
@@ -408,7 +408,7 @@ static int prepare_xfer(partition_t *part, int i)
     erase_unit_header_t header;
     struct xfer_info_t *xfer;
     int nbam, ret;
-    u_int32_t ctl;
+    uint32_t ctl;
     ssize_t retlen;
     loff_t offset;
 
@@ -430,15 +430,15 @@ static int prepare_xfer(partition_t *part, int i)
     }
 
     /* Write the BAM stub */
-    nbam = (part->BlocksPerUnit * sizeof(u_int32_t) +
+    nbam = (part->BlocksPerUnit * sizeof(uint32_t) +
             le32_to_cpu(part->header.BAMOffset) + SECTOR_SIZE - 1) / SECTOR_SIZE;
 
     offset = xfer->Offset + le32_to_cpu(part->header.BAMOffset);
     ctl = cpu_to_le32(BLOCK_CONTROL);
 
-    for (i = 0; i < nbam; i++, offset += sizeof(u_int32_t)) {
+    for (i = 0; i < nbam; i++, offset += sizeof(uint32_t)) {
 
-        ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(u_int32_t),
+        ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(uint32_t),
                                &retlen, (u_char *)&ctl);
 
         if (ret)
@@ -461,18 +461,18 @@ static int prepare_xfer(partition_t *part, int i)
 
 ======================================================================*/
 
-static int copy_erase_unit(partition_t *part, u_int16_t srcunit,
-                           u_int16_t xferunit)
+static int copy_erase_unit(partition_t *part, uint16_t srcunit,
+                           uint16_t xferunit)
 {
     u_char buf[SECTOR_SIZE];
     struct eun_info_t *eun;
     struct xfer_info_t *xfer;
-    u_int32_t src, dest, free, i;
-    u_int16_t unit;
+    uint32_t src, dest, free, i;
+    uint16_t unit;
     int ret;
     ssize_t retlen;
     loff_t offset;
-    u_int16_t srcunitswap = cpu_to_le16(srcunit);
+    uint16_t srcunitswap = cpu_to_le16(srcunit);
 
     eun = &part->EUNInfo[srcunit];
     xfer = &part->XferInfo[xferunit];
@@ -486,7 +486,7 @@ static int copy_erase_unit(partition_t *part, u_int16_t srcunit,
         offset = eun->Offset + le32_to_cpu(part->header.BAMOffset);
 
         ret = part->mbd.mtd->read(part->mbd.mtd, offset,
-                              part->BlocksPerUnit * sizeof(u_int32_t),
+                              part->BlocksPerUnit * sizeof(uint32_t),
                               &retlen, (u_char *) (part->bam_cache));
 
         /* mark the cache bad, in case we get an error later */
@@ -503,7 +503,7 @@ static int copy_erase_unit(partition_t *part, u_int16_t srcunit,
     offset = xfer->Offset + 20; /* Bad! */
     unit = cpu_to_le16(0x7fff);
 
-    ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(u_int16_t),
+    ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(uint16_t),
                            &retlen, (u_char *) &unit);
 
     if (ret) {
@@ -560,7 +560,7 @@ static int copy_erase_unit(partition_t *part, u_int16_t srcunit,
 
 
     /* All clear? Then update the LogicalEUN again */
-    ret = part->mbd.mtd->write(part->mbd.mtd, xfer->Offset + 20, sizeof(u_int16_t),
+    ret = part->mbd.mtd->write(part->mbd.mtd, xfer->Offset + 20, sizeof(uint16_t),
                            &retlen, (u_char *)&srcunitswap);
 
     if (ret) {
@@ -605,8 +605,8 @@ static int copy_erase_unit(partition_t *part, u_int16_t srcunit,
 
 static int reclaim_block(partition_t *part)
 {
-    u_int16_t i, eun, xfer;
-    u_int32_t best;
+    uint16_t i, eun, xfer;
+    uint32_t best;
     int queued, ret;
 
     DEBUG(0, "ftl_cs: reclaiming space...\n");
@@ -723,10 +723,10 @@ static void dump_lists(partition_t *part)
 }
 #endif
 
-static u_int32_t find_free(partition_t *part)
+static uint32_t find_free(partition_t *part)
 {
-    u_int16_t stop, eun;
-    u_int32_t blk;
+    uint16_t stop, eun;
+    uint32_t blk;
     size_t retlen;
     int ret;
 
@@ -749,7 +749,7 @@ static u_int32_t find_free(partition_t *part)
 
         ret = part->mbd.mtd->read(part->mbd.mtd,
                        part->EUNInfo[eun].Offset + le32_to_cpu(part->header.BAMOffset),
-                       part->BlocksPerUnit * sizeof(u_int32_t),
+                       part->BlocksPerUnit * sizeof(uint32_t),
                        &retlen, (u_char *) (part->bam_cache));
 
         if (ret) {
@@ -786,7 +786,7 @@ static u_int32_t find_free(partition_t *part)
 static int ftl_read(partition_t *part, caddr_t buffer,
                     u_long sector, u_long nblocks)
 {
-    u_int32_t log_addr, bsize;
+    uint32_t log_addr, bsize;
     u_long i;
     int ret;
     size_t offset, retlen;
@@ -829,14 +829,14 @@ static int ftl_read(partition_t *part, caddr_t buffer,
 
 ======================================================================*/
 
-static int set_bam_entry(partition_t *part, u_int32_t log_addr,
-                         u_int32_t virt_addr)
+static int set_bam_entry(partition_t *part, uint32_t log_addr,
+                         uint32_t virt_addr)
 {
-    u_int32_t bsize, blk, le_virt_addr;
+    uint32_t bsize, blk, le_virt_addr;
 #ifdef PSYCHO_DEBUG
-    u_int32_t old_addr;
+    uint32_t old_addr;
 #endif
-    u_int16_t eun;
+    uint16_t eun;
     int ret;
     size_t retlen, offset;
 
@@ -845,11 +845,11 @@ static int set_bam_entry(partition_t *part, u_int32_t log_addr,
     bsize = 1 << part->header.EraseUnitSize;
     eun = log_addr / bsize;
     blk = (log_addr % bsize) / SECTOR_SIZE;
-    offset = (part->EUNInfo[eun].Offset + blk * sizeof(u_int32_t) +
+    offset = (part->EUNInfo[eun].Offset + blk * sizeof(uint32_t) +
                   le32_to_cpu(part->header.BAMOffset));
 
 #ifdef PSYCHO_DEBUG
-    ret = part->mbd.mtd->read(part->mbd.mtd, offset, sizeof(u_int32_t),
+    ret = part->mbd.mtd->read(part->mbd.mtd, offset, sizeof(uint32_t),
                         &retlen, (u_char *)&old_addr);
     if (ret) {
         printk(KERN_WARNING"ftl: Error reading old_addr in set_bam_entry: %d\n",ret);
@@ -886,7 +886,7 @@ static int set_bam_entry(partition_t *part, u_int32_t log_addr,
 #endif
         part->bam_cache[blk] = le_virt_addr;
     }
-    ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(u_int32_t),
+    ret = part->mbd.mtd->write(part->mbd.mtd, offset, sizeof(uint32_t),
                             &retlen, (u_char *)&le_virt_addr);
 
     if (ret) {
@@ -900,7 +900,7 @@ static int set_bam_entry(partition_t *part, u_int32_t log_addr,
 static int ftl_write(partition_t *part, caddr_t buffer,
                      u_long sector, u_long nblocks)
 {
-    u_int32_t bsize, log_addr, virt_addr, old_addr, blk;
+    uint32_t bsize, log_addr, virt_addr, old_addr, blk;
     u_long i;
     int ret;
     size_t retlen, offset;
diff --git a/drivers/mtd/inftlcore.c b/drivers/mtd/inftlcore.c
index 50ce13887f63..73f05227dc8c 100644
--- a/drivers/mtd/inftlcore.c
+++ b/drivers/mtd/inftlcore.c
@@ -50,7 +50,7 @@ static void inftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
         struct INFTLrecord *inftl;
         unsigned long temp;
 
-        if (mtd->type != MTD_NANDFLASH)
+        if (mtd->type != MTD_NANDFLASH || mtd->size > UINT_MAX)
                 return;
         /* OK, this is moderately ugly.  But probably safe.  Alternatives? */
         if (memcmp(mtd->name, "DiskOnChip", 10))
diff --git a/drivers/mtd/inftlmount.c b/drivers/mtd/inftlmount.c
index 9113628ed1ef..f751dd97c549 100644
--- a/drivers/mtd/inftlmount.c
+++ b/drivers/mtd/inftlmount.c
@@ -63,7 +63,7 @@ static int find_boot_record(struct INFTLrecord *inftl)
          * otherwise.
          */
         inftl->EraseSize = inftl->mbd.mtd->erasesize;
-        inftl->nb_blocks = inftl->mbd.mtd->size / inftl->EraseSize;
+        inftl->nb_blocks = (u32)inftl->mbd.mtd->size / inftl->EraseSize;
 
         inftl->MediaUnit = BLOCK_NIL;
 
@@ -187,7 +187,7 @@ static int find_boot_record(struct INFTLrecord *inftl)
                                 mh->BlockMultiplierBits);
                         inftl->EraseSize = inftl->mbd.mtd->erasesize <<
                                 mh->BlockMultiplierBits;
-                        inftl->nb_blocks = inftl->mbd.mtd->size / inftl->EraseSize;
+                        inftl->nb_blocks = (u32)inftl->mbd.mtd->size / inftl->EraseSize;
                         block >>= mh->BlockMultiplierBits;
                 }
 
diff --git a/drivers/mtd/lpddr/Kconfig b/drivers/mtd/lpddr/Kconfig
new file mode 100644
index 000000000000..acd4ea9b2278
--- /dev/null
+++ b/drivers/mtd/lpddr/Kconfig
@@ -0,0 +1,22 @@
+# drivers/mtd/chips/Kconfig
+
+menu "LPDDR flash memory drivers"
+        depends on MTD!=n
+
+config MTD_LPDDR
+        tristate "Support for LPDDR flash chips"
+        select MTD_QINFO_PROBE
+        help
+          This option enables support of LPDDR (Low power double data rate)
+          flash chips. Synonymous with Mobile-DDR. It is a new standard for
+          DDR memories, intended for battery-operated systems.
+
+config MTD_QINFO_PROBE
+        tristate "Detect flash chips by QINFO probe"
+        help
+            Device Information for LPDDR chips is offered through the Overlay
+            Window QINFO interface, permits software to be used for entire
+            families of devices. This serves similar purpose of CFI on legacy
+            Flash products
+endmenu
+
diff --git a/drivers/mtd/lpddr/Makefile b/drivers/mtd/lpddr/Makefile
new file mode 100644
index 000000000000..da48e46b5812
--- /dev/null
+++ b/drivers/mtd/lpddr/Makefile
@@ -0,0 +1,6 @@
+#
+# linux/drivers/mtd/lpddr/Makefile
+#
+
+obj-$(CONFIG_MTD_QINFO_PROBE)   += qinfo_probe.o
+obj-$(CONFIG_MTD_LPDDR) += lpddr_cmds.o
diff --git a/drivers/mtd/lpddr/lpddr_cmds.c b/drivers/mtd/lpddr/lpddr_cmds.c
new file mode 100644
index 000000000000..e22ca49583e7
--- /dev/null
+++ b/drivers/mtd/lpddr/lpddr_cmds.c
@@ -0,0 +1,796 @@
+/*
+ * LPDDR flash memory device operations. This module provides read, write,
+ * erase, lock/unlock support for LPDDR flash memories
+ * (C) 2008 Korolev Alexey <akorolev@infradead.org>
+ * (C) 2008 Vasiliy Leonenko <vasiliy.leonenko@gmail.com>
+ * Many thanks to Roman Borisov for intial enabling
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ * TODO:
+ * Implement VPP management
+ * Implement XIP support
+ * Implement OTP support
+ */
+#include <linux/mtd/pfow.h>
+#include <linux/mtd/qinfo.h>
+
+static int lpddr_read(struct mtd_info *mtd, loff_t adr, size_t len,
+                                        size_t *retlen, u_char *buf);
+static int lpddr_write_buffers(struct mtd_info *mtd, loff_t to,
+                                size_t len, size_t *retlen, const u_char *buf);
+static int lpddr_writev(struct mtd_info *mtd, const struct kvec *vecs,
+                                unsigned long count, loff_t to, size_t *retlen);
+static int lpddr_erase(struct mtd_info *mtd, struct erase_info *instr);
+static int lpddr_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+static int lpddr_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+static int lpddr_point(struct mtd_info *mtd, loff_t adr, size_t len,
+                        size_t *retlen, void **mtdbuf, resource_size_t *phys);
+static void lpddr_unpoint(struct mtd_info *mtd, loff_t adr, size_t len);
+static int get_chip(struct map_info *map, struct flchip *chip, int mode);
+static int chip_ready(struct map_info *map, struct flchip *chip, int mode);
+static void put_chip(struct map_info *map, struct flchip *chip);
+
+struct mtd_info *lpddr_cmdset(struct map_info *map)
+{
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        struct flchip_shared *shared;
+        struct flchip *chip;
+        struct mtd_info *mtd;
+        int numchips;
+        int i, j;
+
+        mtd = kzalloc(sizeof(*mtd), GFP_KERNEL);
+        if (!mtd) {
+                printk(KERN_ERR "Failed to allocate memory for MTD device\n");
+                return NULL;
+        }
+        mtd->priv = map;
+        mtd->type = MTD_NORFLASH;
+
+        /* Fill in the default mtd operations */
+        mtd->read = lpddr_read;
+        mtd->type = MTD_NORFLASH;
+        mtd->flags = MTD_CAP_NORFLASH;
+        mtd->flags &= ~MTD_BIT_WRITEABLE;
+        mtd->erase = lpddr_erase;
+        mtd->write = lpddr_write_buffers;
+        mtd->writev = lpddr_writev;
+        mtd->read_oob = NULL;
+        mtd->write_oob = NULL;
+        mtd->sync = NULL;
+        mtd->lock = lpddr_lock;
+        mtd->unlock = lpddr_unlock;
+        mtd->suspend = NULL;
+        mtd->resume = NULL;
+        if (map_is_linear(map)) {
+                mtd->point = lpddr_point;
+                mtd->unpoint = lpddr_unpoint;
+        }
+        mtd->block_isbad = NULL;
+        mtd->block_markbad = NULL;
+        mtd->size = 1 << lpddr->qinfo->DevSizeShift;
+        mtd->erasesize = 1 << lpddr->qinfo->UniformBlockSizeShift;
+        mtd->writesize = 1 << lpddr->qinfo->BufSizeShift;
+
+        shared = kmalloc(sizeof(struct flchip_shared) * lpddr->numchips,
+                                                GFP_KERNEL);
+        if (!shared) {
+                kfree(lpddr);
+                kfree(mtd);
+                return NULL;
+        }
+
+        chip = &lpddr->chips[0];
+        numchips = lpddr->numchips / lpddr->qinfo->HWPartsNum;
+        for (i = 0; i < numchips; i++) {
+                shared[i].writing = shared[i].erasing = NULL;
+                spin_lock_init(&shared[i].lock);
+                for (j = 0; j < lpddr->qinfo->HWPartsNum; j++) {
+                        *chip = lpddr->chips[i];
+                        chip->start += j << lpddr->chipshift;
+                        chip->oldstate = chip->state = FL_READY;
+                        chip->priv = &shared[i];
+                        /* those should be reset too since
+                           they create memory references. */
+                        init_waitqueue_head(&chip->wq);
+                        spin_lock_init(&chip->_spinlock);
+                        chip->mutex = &chip->_spinlock;
+                        chip++;
+                }
+        }
+
+        return mtd;
+}
+EXPORT_SYMBOL(lpddr_cmdset);
+
+static int wait_for_ready(struct map_info *map, struct flchip *chip,
+                unsigned int chip_op_time)
+{
+        unsigned int timeo, reset_timeo, sleep_time;
+        unsigned int dsr;
+        flstate_t chip_state = chip->state;
+        int ret = 0;
+
+        /* set our timeout to 8 times the expected delay */
+        timeo = chip_op_time * 8;
+        if (!timeo)
+                timeo = 500000;
+        reset_timeo = timeo;
+        sleep_time = chip_op_time / 2;
+
+        for (;;) {
+                dsr = CMDVAL(map_read(map, map->pfow_base + PFOW_DSR));
+                if (dsr & DSR_READY_STATUS)
+                        break;
+                if (!timeo) {
+                        printk(KERN_ERR "%s: Flash timeout error state %d \n",
+                                                        map->name, chip_state);
+                        ret = -ETIME;
+                        break;
+                }
+
+                /* OK Still waiting. Drop the lock, wait a while and retry. */
+                spin_unlock(chip->mutex);
+                if (sleep_time >= 1000000/HZ) {
+                        /*
+                         * Half of the normal delay still remaining
+                         * can be performed with a sleeping delay instead
+                         * of busy waiting.
+                         */
+                        msleep(sleep_time/1000);
+                        timeo -= sleep_time;
+                        sleep_time = 1000000/HZ;
+                } else {
+                        udelay(1);
+                        cond_resched();
+                        timeo--;
+                }
+                spin_lock(chip->mutex);
+
+                while (chip->state != chip_state) {
+                        /* Someone's suspended the operation: sleep */
+                        DECLARE_WAITQUEUE(wait, current);
+                        set_current_state(TASK_UNINTERRUPTIBLE);
+                        add_wait_queue(&chip->wq, &wait);
+                        spin_unlock(chip->mutex);
+                        schedule();
+                        remove_wait_queue(&chip->wq, &wait);
+                        spin_lock(chip->mutex);
+                }
+                if (chip->erase_suspended || chip->write_suspended)  {
+                        /* Suspend has occured while sleep: reset timeout */
+                        timeo = reset_timeo;
+                        chip->erase_suspended = chip->write_suspended = 0;
+                }
+        }
+        /* check status for errors */
+        if (dsr & DSR_ERR) {
+                /* Clear DSR*/
+                map_write(map, CMD(~(DSR_ERR)), map->pfow_base + PFOW_DSR);
+                printk(KERN_WARNING"%s: Bad status on wait: 0x%x \n",
+                                map->name, dsr);
+                print_drs_error(dsr);
+                ret = -EIO;
+        }
+        chip->state = FL_READY;
+        return ret;
+}
+
+static int get_chip(struct map_info *map, struct flchip *chip, int mode)
+{
+        int ret;
+        DECLARE_WAITQUEUE(wait, current);
+
+ retry:
+        if (chip->priv && (mode == FL_WRITING || mode == FL_ERASING)
+                && chip->state != FL_SYNCING) {
+                /*
+                 * OK. We have possibility for contension on the write/erase
+                 * operations which are global to the real chip and not per
+                 * partition.  So let's fight it over in the partition which
+                 * currently has authority on the operation.
+                 *
+                 * The rules are as follows:
+                 *
+                 * - any write operation must own shared->writing.
+                 *
+                 * - any erase operation must own _both_ shared->writing and
+                 *   shared->erasing.
+                 *
+                 * - contension arbitration is handled in the owner's context.
+                 *
+                 * The 'shared' struct can be read and/or written only when
+                 * its lock is taken.
+                 */
+                struct flchip_shared *shared = chip->priv;
+                struct flchip *contender;
+                spin_lock(&shared->lock);
+                contender = shared->writing;
+                if (contender && contender != chip) {
+                        /*
+                         * The engine to perform desired operation on this
+                         * partition is already in use by someone else.
+                         * Let's fight over it in the context of the chip
+                         * currently using it.  If it is possible to suspend,
+                         * that other partition will do just that, otherwise
+                         * it'll happily send us to sleep.  In any case, when
+                         * get_chip returns success we're clear to go ahead.
+                         */
+                        ret = spin_trylock(contender->mutex);
+                        spin_unlock(&shared->lock);
+                        if (!ret)
+                                goto retry;
+                        spin_unlock(chip->mutex);
+                        ret = chip_ready(map, contender, mode);
+                        spin_lock(chip->mutex);
+
+                        if (ret == -EAGAIN) {
+                                spin_unlock(contender->mutex);
+                                goto retry;
+                        }
+                        if (ret) {
+                                spin_unlock(contender->mutex);
+                                return ret;
+                        }
+                        spin_lock(&shared->lock);
+
+                        /* We should not own chip if it is already in FL_SYNCING
+                         * state. Put contender and retry. */
+                        if (chip->state == FL_SYNCING) {
+                                put_chip(map, contender);
+                                spin_unlock(contender->mutex);
+                                goto retry;
+                        }
+                        spin_unlock(contender->mutex);
+                }
+
+                /* Check if we have suspended erase on this chip.
+                   Must sleep in such a case. */
+                if (mode == FL_ERASING && shared->erasing
+                    && shared->erasing->oldstate == FL_ERASING) {
+                        spin_unlock(&shared->lock);
+                        set_current_state(TASK_UNINTERRUPTIBLE);
+                        add_wait_queue(&chip->wq, &wait);
+                        spin_unlock(chip->mutex);
+                        schedule();
+                        remove_wait_queue(&chip->wq, &wait);
+                        spin_lock(chip->mutex);
+                        goto retry;
+                }
+
+                /* We now own it */
+                shared->writing = chip;
+                if (mode == FL_ERASING)
+                        shared->erasing = chip;
+                spin_unlock(&shared->lock);
+        }
+
+        ret = chip_ready(map, chip, mode);
+        if (ret == -EAGAIN)
+                goto retry;
+
+        return ret;
+}
+
+static int chip_ready(struct map_info *map, struct flchip *chip, int mode)
+{
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int ret = 0;
+        DECLARE_WAITQUEUE(wait, current);
+
+        /* Prevent setting state FL_SYNCING for chip in suspended state. */
+        if (FL_SYNCING == mode && FL_READY != chip->oldstate)
+                goto sleep;
+
+        switch (chip->state) {
+        case FL_READY:
+        case FL_JEDEC_QUERY:
+                return 0;
+
+        case FL_ERASING:
+                if (!lpddr->qinfo->SuspEraseSupp ||
+                        !(mode == FL_READY || mode == FL_POINT))
+                        goto sleep;
+
+                map_write(map, CMD(LPDDR_SUSPEND),
+                        map->pfow_base + PFOW_PROGRAM_ERASE_SUSPEND);
+                chip->oldstate = FL_ERASING;
+                chip->state = FL_ERASE_SUSPENDING;
+                ret = wait_for_ready(map, chip, 0);
+                if (ret) {
+                        /* Oops. something got wrong. */
+                        /* Resume and pretend we weren't here.  */
+                        map_write(map, CMD(LPDDR_RESUME),
+                                map->pfow_base + PFOW_COMMAND_CODE);
+                        map_write(map, CMD(LPDDR_START_EXECUTION),
+                                map->pfow_base + PFOW_COMMAND_EXECUTE);
+                        chip->state = FL_ERASING;
+                        chip->oldstate = FL_READY;
+                        printk(KERN_ERR "%s: suspend operation failed."
+                                        "State may be wrong \n", map->name);
+                        return -EIO;
+                }
+                chip->erase_suspended = 1;
+                chip->state = FL_READY;
+                return 0;
+                /* Erase suspend */
+        case FL_POINT:
+                /* Only if there's no operation suspended... */
+                if (mode == FL_READY && chip->oldstate == FL_READY)
+                        return 0;
+
+        default:
+sleep:
+                set_current_state(TASK_UNINTERRUPTIBLE);
+                add_wait_queue(&chip->wq, &wait);
+                spin_unlock(chip->mutex);
+                schedule();
+                remove_wait_queue(&chip->wq, &wait);
+                spin_lock(chip->mutex);
+                return -EAGAIN;
+        }
+}
+
+static void put_chip(struct map_info *map, struct flchip *chip)
+{
+        if (chip->priv) {
+                struct flchip_shared *shared = chip->priv;
+                spin_lock(&shared->lock);
+                if (shared->writing == chip && chip->oldstate == FL_READY) {
+                        /* We own the ability to write, but we're done */
+                        shared->writing = shared->erasing;
+                        if (shared->writing && shared->writing != chip) {
+                                /* give back the ownership */
+                                struct flchip *loaner = shared->writing;
+                                spin_lock(loaner->mutex);
+                                spin_unlock(&shared->lock);
+                                spin_unlock(chip->mutex);
+                                put_chip(map, loaner);
+                                spin_lock(chip->mutex);
+                                spin_unlock(loaner->mutex);
+                                wake_up(&chip->wq);
+                                return;
+                        }
+                        shared->erasing = NULL;
+                        shared->writing = NULL;
+                } else if (shared->erasing == chip && shared->writing != chip) {
+                        /*
+                         * We own the ability to erase without the ability
+                         * to write, which means the erase was suspended
+                         * and some other partition is currently writing.
+                         * Don't let the switch below mess things up since
+                         * we don't have ownership to resume anything.
+                         */
+                        spin_unlock(&shared->lock);
+                        wake_up(&chip->wq);
+                        return;
+                }
+                spin_unlock(&shared->lock);
+        }
+
+        switch (chip->oldstate) {
+        case FL_ERASING:
+                chip->state = chip->oldstate;
+                map_write(map, CMD(LPDDR_RESUME),
+                                map->pfow_base + PFOW_COMMAND_CODE);
+                map_write(map, CMD(LPDDR_START_EXECUTION),
+                                map->pfow_base + PFOW_COMMAND_EXECUTE);
+                chip->oldstate = FL_READY;
+                chip->state = FL_ERASING;
+                break;
+        case FL_READY:
+                break;
+        default:
+                printk(KERN_ERR "%s: put_chip() called with oldstate %d!\n",
+                                map->name, chip->oldstate);
+        }
+        wake_up(&chip->wq);
+}
+
+int do_write_buffer(struct map_info *map, struct flchip *chip,
+                        unsigned long adr, const struct kvec **pvec,
+                        unsigned long *pvec_seek, int len)
+{
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        map_word datum;
+        int ret, wbufsize, word_gap, words;
+        const struct kvec *vec;
+        unsigned long vec_seek;
+        unsigned long prog_buf_ofs;
+
+        wbufsize = 1 << lpddr->qinfo->BufSizeShift;
+
+        spin_lock(chip->mutex);
+        ret = get_chip(map, chip, FL_WRITING);
+        if (ret) {
+                spin_unlock(chip->mutex);
+                return ret;
+        }
+        /* Figure out the number of words to write */
+        word_gap = (-adr & (map_bankwidth(map)-1));
+        words = (len - word_gap + map_bankwidth(map) - 1) / map_bankwidth(map);
+        if (!word_gap) {
+                words--;
+        } else {
+                word_gap = map_bankwidth(map) - word_gap;
+                adr -= word_gap;
+                datum = map_word_ff(map);
+        }
+        /* Write data */
+        /* Get the program buffer offset from PFOW register data first*/
+        prog_buf_ofs = map->pfow_base + CMDVAL(map_read(map,
+                                map->pfow_base + PFOW_PROGRAM_BUFFER_OFFSET));
+        vec = *pvec;
+        vec_seek = *pvec_seek;
+        do {
+                int n = map_bankwidth(map) - word_gap;
+
+                if (n > vec->iov_len - vec_seek)
+                        n = vec->iov_len - vec_seek;
+                if (n > len)
+                        n = len;
+
+                if (!word_gap && (len < map_bankwidth(map)))
+                        datum = map_word_ff(map);
+
+                datum = map_word_load_partial(map, datum,
+                                vec->iov_base + vec_seek, word_gap, n);
+
+                len -= n;
+                word_gap += n;
+                if (!len || word_gap == map_bankwidth(map)) {
+                        map_write(map, datum, prog_buf_ofs);
+                        prog_buf_ofs += map_bankwidth(map);
+                        word_gap = 0;
+                }
+
+                vec_seek += n;
+                if (vec_seek == vec->iov_len) {
+                        vec++;
+                        vec_seek = 0;
+                }
+        } while (len);
+        *pvec = vec;
+        *pvec_seek = vec_seek;
+
+        /* GO GO GO */
+        send_pfow_command(map, LPDDR_BUFF_PROGRAM, adr, wbufsize, NULL);
+        chip->state = FL_WRITING;
+        ret = wait_for_ready(map, chip, (1<<lpddr->qinfo->ProgBufferTime));
+        if (ret)        {
+                printk(KERN_WARNING"%s Buffer program error: %d at %lx; \n",
+                        map->name, ret, adr);
+                goto out;
+        }
+
+ out:   put_chip(map, chip);
+        spin_unlock(chip->mutex);
+        return ret;
+}
+
+int do_erase_oneblock(struct mtd_info *mtd, loff_t adr)
+{
+        struct map_info *map = mtd->priv;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int chipnum = adr >> lpddr->chipshift;
+        struct flchip *chip = &lpddr->chips[chipnum];
+        int ret;
+
+        spin_lock(chip->mutex);
+        ret = get_chip(map, chip, FL_ERASING);
+        if (ret) {
+                spin_unlock(chip->mutex);
+                return ret;
+        }
+        send_pfow_command(map, LPDDR_BLOCK_ERASE, adr, 0, NULL);
+        chip->state = FL_ERASING;
+        ret = wait_for_ready(map, chip, (1<<lpddr->qinfo->BlockEraseTime)*1000);
+        if (ret) {
+                printk(KERN_WARNING"%s Erase block error %d at : %llx\n",
+                        map->name, ret, adr);
+                goto out;
+        }
+ out:   put_chip(map, chip);
+        spin_unlock(chip->mutex);
+        return ret;
+}
+
+static int lpddr_read(struct mtd_info *mtd, loff_t adr, size_t len,
+                        size_t *retlen, u_char *buf)
+{
+        struct map_info *map = mtd->priv;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int chipnum = adr >> lpddr->chipshift;
+        struct flchip *chip = &lpddr->chips[chipnum];
+        int ret = 0;
+
+        spin_lock(chip->mutex);
+        ret = get_chip(map, chip, FL_READY);
+        if (ret) {
+                spin_unlock(chip->mutex);
+                return ret;
+        }
+
+        map_copy_from(map, buf, adr, len);
+        *retlen = len;
+
+        put_chip(map, chip);
+        spin_unlock(chip->mutex);
+        return ret;
+}
+
+static int lpddr_point(struct mtd_info *mtd, loff_t adr, size_t len,
+                        size_t *retlen, void **mtdbuf, resource_size_t *phys)
+{
+        struct map_info *map = mtd->priv;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int chipnum = adr >> lpddr->chipshift;
+        unsigned long ofs, last_end = 0;
+        struct flchip *chip = &lpddr->chips[chipnum];
+        int ret = 0;
+
+        if (!map->virt || (adr + len > mtd->size))
+                return -EINVAL;
+
+        /* ofs: offset within the first chip that the first read should start */
+        ofs = adr - (chipnum << lpddr->chipshift);
+
+        *mtdbuf = (void *)map->virt + chip->start + ofs;
+        *retlen = 0;
+
+        while (len) {
+                unsigned long thislen;
+
+                if (chipnum >= lpddr->numchips)
+                        break;
+
+                /* We cannot point across chips that are virtually disjoint */
+                if (!last_end)
+                        last_end = chip->start;
+                else if (chip->start != last_end)
+                        break;
+
+                if ((len + ofs - 1) >> lpddr->chipshift)
+                        thislen = (1<<lpddr->chipshift) - ofs;
+                else
+                        thislen = len;
+                /* get the chip */
+                spin_lock(chip->mutex);
+                ret = get_chip(map, chip, FL_POINT);
+                spin_unlock(chip->mutex);
+                if (ret)
+                        break;
+
+                chip->state = FL_POINT;
+                chip->ref_point_counter++;
+                *retlen += thislen;
+                len -= thislen;
+
+                ofs = 0;
+                last_end += 1 << lpddr->chipshift;
+                chipnum++;
+                chip = &lpddr->chips[chipnum];
+        }
+        return 0;
+}
+
+static void lpddr_unpoint (struct mtd_info *mtd, loff_t adr, size_t len)
+{
+        struct map_info *map = mtd->priv;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int chipnum = adr >> lpddr->chipshift;
+        unsigned long ofs;
+
+        /* ofs: offset within the first chip that the first read should start */
+        ofs = adr - (chipnum << lpddr->chipshift);
+
+        while (len) {
+                unsigned long thislen;
+                struct flchip *chip;
+
+                chip = &lpddr->chips[chipnum];
+                if (chipnum >= lpddr->numchips)
+                        break;
+
+                if ((len + ofs - 1) >> lpddr->chipshift)
+                        thislen = (1<<lpddr->chipshift) - ofs;
+                else
+                        thislen = len;
+
+                spin_lock(chip->mutex);
+                if (chip->state == FL_POINT) {
+                        chip->ref_point_counter--;
+                        if (chip->ref_point_counter == 0)
+                                chip->state = FL_READY;
+                } else
+                        printk(KERN_WARNING "%s: Warning: unpoint called on non"
+                                        "pointed region\n", map->name);
+
+                put_chip(map, chip);
+                spin_unlock(chip->mutex);
+
+                len -= thislen;
+                ofs = 0;
+                chipnum++;
+        }
+}
+
+static int lpddr_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,
+                                size_t *retlen, const u_char *buf)
+{
+        struct kvec vec;
+
+        vec.iov_base = (void *) buf;
+        vec.iov_len = len;
+
+        return lpddr_writev(mtd, &vec, 1, to, retlen);
+}
+
+
+static int lpddr_writev(struct mtd_info *mtd, const struct kvec *vecs,
+                                unsigned long count, loff_t to, size_t *retlen)
+{
+        struct map_info *map = mtd->priv;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int ret = 0;
+        int chipnum;
+        unsigned long ofs, vec_seek, i;
+        int wbufsize = 1 << lpddr->qinfo->BufSizeShift;
+
+        size_t len = 0;
+
+        for (i = 0; i < count; i++)
+                len += vecs[i].iov_len;
+
+        *retlen = 0;
+        if (!len)
+                return 0;
+
+        chipnum = to >> lpddr->chipshift;
+
+        ofs = to;
+        vec_seek = 0;
+
+        do {
+                /* We must not cross write block boundaries */
+                int size = wbufsize - (ofs & (wbufsize-1));
+
+                if (size > len)
+                        size = len;
+
+                ret = do_write_buffer(map, &lpddr->chips[chipnum],
+                                          ofs, &vecs, &vec_seek, size);
+                if (ret)
+                        return ret;
+
+                ofs += size;
+                (*retlen) += size;
+                len -= size;
+
+                /* Be nice and reschedule with the chip in a usable
+                 * state for other processes */
+                cond_resched();
+
+        } while (len);
+
+        return 0;
+}
+
+static int lpddr_erase(struct mtd_info *mtd, struct erase_info *instr)
+{
+        unsigned long ofs, len;
+        int ret;
+        struct map_info *map = mtd->priv;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int size = 1 << lpddr->qinfo->UniformBlockSizeShift;
+
+        ofs = instr->addr;
+        len = instr->len;
+
+        if (ofs > mtd->size || (len + ofs) > mtd->size)
+                return -EINVAL;
+
+        while (len > 0) {
+                ret = do_erase_oneblock(mtd, ofs);
+                if (ret)
+                        return ret;
+                ofs += size;
+                len -= size;
+        }
+        instr->state = MTD_ERASE_DONE;
+        mtd_erase_callback(instr);
+
+        return 0;
+}
+
+#define DO_XXLOCK_LOCK          1
+#define DO_XXLOCK_UNLOCK        2
+int do_xxlock(struct mtd_info *mtd, loff_t adr, uint32_t len, int thunk)
+{
+        int ret = 0;
+        struct map_info *map = mtd->priv;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int chipnum = adr >> lpddr->chipshift;
+        struct flchip *chip = &lpddr->chips[chipnum];
+
+        spin_lock(chip->mutex);
+        ret = get_chip(map, chip, FL_LOCKING);
+        if (ret) {
+                spin_unlock(chip->mutex);
+                return ret;
+        }
+
+        if (thunk == DO_XXLOCK_LOCK) {
+                send_pfow_command(map, LPDDR_LOCK_BLOCK, adr, adr + len, NULL);
+                chip->state = FL_LOCKING;
+        } else if (thunk == DO_XXLOCK_UNLOCK) {
+                send_pfow_command(map, LPDDR_UNLOCK_BLOCK, adr, adr + len, NULL);
+                chip->state = FL_UNLOCKING;
+        } else
+                BUG();
+
+        ret = wait_for_ready(map, chip, 1);
+        if (ret)        {
+                printk(KERN_ERR "%s: block unlock error status %d \n",
+                                map->name, ret);
+                goto out;
+        }
+out:    put_chip(map, chip);
+        spin_unlock(chip->mutex);
+        return ret;
+}
+
+static int lpddr_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+{
+        return do_xxlock(mtd, ofs, len, DO_XXLOCK_LOCK);
+}
+
+static int lpddr_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
+{
+        return do_xxlock(mtd, ofs, len, DO_XXLOCK_UNLOCK);
+}
+
+int word_program(struct map_info *map, loff_t adr, uint32_t curval)
+{
+    int ret;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        int chipnum = adr >> lpddr->chipshift;
+        struct flchip *chip = &lpddr->chips[chipnum];
+
+        spin_lock(chip->mutex);
+        ret = get_chip(map, chip, FL_WRITING);
+        if (ret) {
+                spin_unlock(chip->mutex);
+                return ret;
+        }
+
+        send_pfow_command(map, LPDDR_WORD_PROGRAM, adr, 0x00, (map_word *)&curval);
+
+        ret = wait_for_ready(map, chip, (1<<lpddr->qinfo->SingleWordProgTime));
+        if (ret)        {
+                printk(KERN_WARNING"%s word_program error at: %llx; val: %x\n",
+                        map->name, adr, curval);
+                goto out;
+        }
+
+out:    put_chip(map, chip);
+        spin_unlock(chip->mutex);
+        return ret;
+}
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Alexey Korolev <akorolev@infradead.org>");
+MODULE_DESCRIPTION("MTD driver for LPDDR flash chips");
diff --git a/drivers/mtd/lpddr/qinfo_probe.c b/drivers/mtd/lpddr/qinfo_probe.c
new file mode 100644
index 000000000000..79bf40f48b75
--- /dev/null
+++ b/drivers/mtd/lpddr/qinfo_probe.c
@@ -0,0 +1,255 @@
+/*
+ * Probing flash chips with QINFO records.
+ * (C) 2008 Korolev Alexey <akorolev@infradead.org>
+ * (C) 2008 Vasiliy Leonenko <vasiliy.leonenko@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+
+#include <linux/mtd/xip.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/pfow.h>
+#include <linux/mtd/qinfo.h>
+
+static int lpddr_chip_setup(struct map_info *map, struct lpddr_private *lpddr);
+struct mtd_info *lpddr_probe(struct map_info *map);
+static struct lpddr_private *lpddr_probe_chip(struct map_info *map);
+static int lpddr_pfow_present(struct map_info *map,
+                        struct lpddr_private *lpddr);
+
+static struct qinfo_query_info qinfo_array[] = {
+        /* General device info */
+        {0, 0, "DevSizeShift", "Device size 2^n bytes"},
+        {0, 3, "BufSizeShift", "Program buffer size 2^n bytes"},
+        /* Erase block information */
+        {1, 1, "TotalBlocksNum", "Total number of blocks"},
+        {1, 2, "UniformBlockSizeShift", "Uniform block size 2^n bytes"},
+        /* Partition information */
+        {2, 1, "HWPartsNum", "Number of hardware partitions"},
+        /* Optional features */
+        {5, 1, "SuspEraseSupp", "Suspend erase supported"},
+        /* Operation typical time */
+        {10, 0, "SingleWordProgTime", "Single word program 2^n u-sec"},
+        {10, 1, "ProgBufferTime", "Program buffer write 2^n u-sec"},
+        {10, 2, "BlockEraseTime", "Block erase 2^n m-sec"},
+        {10, 3, "FullChipEraseTime", "Full chip erase 2^n m-sec"},
+};
+
+static long lpddr_get_qinforec_pos(struct map_info *map, char *id_str)
+{
+        int qinfo_lines = sizeof(qinfo_array)/sizeof(struct qinfo_query_info);
+        int i;
+        int bankwidth = map_bankwidth(map) * 8;
+        int major, minor;
+
+        for (i = 0; i < qinfo_lines; i++) {
+                if (strcmp(id_str, qinfo_array[i].id_str) == 0) {
+                        major = qinfo_array[i].major & ((1 << bankwidth) - 1);
+                        minor = qinfo_array[i].minor & ((1 << bankwidth) - 1);
+                        return minor | (major << bankwidth);
+                }
+        }
+        printk(KERN_ERR"%s qinfo id string is wrong! \n", map->name);
+        BUG();
+        return -1;
+}
+
+static uint16_t lpddr_info_query(struct map_info *map, char *id_str)
+{
+        unsigned int dsr, val;
+        int bits_per_chip = map_bankwidth(map) * 8;
+        unsigned long adr = lpddr_get_qinforec_pos(map, id_str);
+        int attempts = 20;
+
+        /* Write a request for the PFOW record */
+        map_write(map, CMD(LPDDR_INFO_QUERY),
+                        map->pfow_base + PFOW_COMMAND_CODE);
+        map_write(map, CMD(adr & ((1 << bits_per_chip) - 1)),
+                        map->pfow_base + PFOW_COMMAND_ADDRESS_L);
+        map_write(map, CMD(adr >> bits_per_chip),
+                        map->pfow_base + PFOW_COMMAND_ADDRESS_H);
+        map_write(map, CMD(LPDDR_START_EXECUTION),
+                        map->pfow_base + PFOW_COMMAND_EXECUTE);
+
+        while ((attempts--) > 0) {
+                dsr = CMDVAL(map_read(map, map->pfow_base + PFOW_DSR));
+                if (dsr & DSR_READY_STATUS)
+                        break;
+                udelay(10);
+        }
+
+        val = CMDVAL(map_read(map, map->pfow_base + PFOW_COMMAND_DATA));
+        return val;
+}
+
+static int lpddr_pfow_present(struct map_info *map, struct lpddr_private *lpddr)
+{
+        map_word pfow_val[4];
+
+        /* Check identification string */
+        pfow_val[0] = map_read(map, map->pfow_base + PFOW_QUERY_STRING_P);
+        pfow_val[1] = map_read(map, map->pfow_base + PFOW_QUERY_STRING_F);
+        pfow_val[2] = map_read(map, map->pfow_base + PFOW_QUERY_STRING_O);
+        pfow_val[3] = map_read(map, map->pfow_base + PFOW_QUERY_STRING_W);
+
+        if (!map_word_equal(map, CMD('P'), pfow_val[0]))
+                goto out;
+
+        if (!map_word_equal(map, CMD('F'), pfow_val[1]))
+                goto out;
+
+        if (!map_word_equal(map, CMD('O'), pfow_val[2]))
+                goto out;
+
+        if (!map_word_equal(map, CMD('W'), pfow_val[3]))
+                goto out;
+
+        return 1;       /* "PFOW" is found */
+out:
+        printk(KERN_WARNING"%s: PFOW string at 0x%lx is not found \n",
+                                        map->name, map->pfow_base);
+        return 0;
+}
+
+static int lpddr_chip_setup(struct map_info *map, struct lpddr_private *lpddr)
+{
+
+        lpddr->qinfo = kmalloc(sizeof(struct qinfo_chip), GFP_KERNEL);
+        if (!lpddr->qinfo) {
+                printk(KERN_WARNING "%s: no memory for LPDDR qinfo structure\n",
+                                map->name);
+                return 0;
+        }
+        memset(lpddr->qinfo, 0, sizeof(struct qinfo_chip));
+
+        /* Get the ManuID */
+        lpddr->ManufactId = CMDVAL(map_read(map, map->pfow_base + PFOW_MANUFACTURER_ID));
+        /* Get the DeviceID */
+        lpddr->DevId = CMDVAL(map_read(map, map->pfow_base + PFOW_DEVICE_ID));
+        /* read parameters from chip qinfo table */
+        lpddr->qinfo->DevSizeShift = lpddr_info_query(map, "DevSizeShift");
+        lpddr->qinfo->TotalBlocksNum = lpddr_info_query(map, "TotalBlocksNum");
+        lpddr->qinfo->BufSizeShift = lpddr_info_query(map, "BufSizeShift");
+        lpddr->qinfo->HWPartsNum = lpddr_info_query(map, "HWPartsNum");
+        lpddr->qinfo->UniformBlockSizeShift =
+                                lpddr_info_query(map, "UniformBlockSizeShift");
+        lpddr->qinfo->SuspEraseSupp = lpddr_info_query(map, "SuspEraseSupp");
+        lpddr->qinfo->SingleWordProgTime =
+                                lpddr_info_query(map, "SingleWordProgTime");
+        lpddr->qinfo->ProgBufferTime = lpddr_info_query(map, "ProgBufferTime");
+        lpddr->qinfo->BlockEraseTime = lpddr_info_query(map, "BlockEraseTime");
+        return 1;
+}
+static struct lpddr_private *lpddr_probe_chip(struct map_info *map)
+{
+        struct lpddr_private lpddr;
+        struct lpddr_private *retlpddr;
+        int numvirtchips;
+
+
+        if ((map->pfow_base + 0x1000) >= map->size) {
+                printk(KERN_NOTICE"%s Probe at base (0x%08lx) past the end of"
+                                "the map(0x%08lx)\n", map->name,
+                                (unsigned long)map->pfow_base, map->size - 1);
+                return NULL;
+        }
+        memset(&lpddr, 0, sizeof(struct lpddr_private));
+        if (!lpddr_pfow_present(map, &lpddr))
+                return NULL;
+
+        if (!lpddr_chip_setup(map, &lpddr))
+                return NULL;
+
+        /* Ok so we found a chip */
+        lpddr.chipshift = lpddr.qinfo->DevSizeShift;
+        lpddr.numchips = 1;
+
+        numvirtchips = lpddr.numchips * lpddr.qinfo->HWPartsNum;
+        retlpddr = kmalloc(sizeof(struct lpddr_private) +
+                        numvirtchips * sizeof(struct flchip), GFP_KERNEL);
+        if (!retlpddr)
+                return NULL;
+
+        memset(retlpddr, 0, sizeof(struct lpddr_private) +
+                                numvirtchips * sizeof(struct flchip));
+        memcpy(retlpddr, &lpddr, sizeof(struct lpddr_private));
+
+        retlpddr->numchips = numvirtchips;
+        retlpddr->chipshift = retlpddr->qinfo->DevSizeShift -
+                                __ffs(retlpddr->qinfo->HWPartsNum);
+
+        return retlpddr;
+}
+
+struct mtd_info *lpddr_probe(struct map_info *map)
+{
+        struct mtd_info *mtd = NULL;
+        struct lpddr_private *lpddr;
+
+        /* First probe the map to see if we havecan open PFOW here */
+        lpddr = lpddr_probe_chip(map);
+        if (!lpddr)
+                return NULL;
+
+        map->fldrv_priv = lpddr;
+        mtd = lpddr_cmdset(map);
+        if (mtd) {
+                if (mtd->size > map->size) {
+                        printk(KERN_WARNING "Reducing visibility of %ldKiB chip"
+                                "to %ldKiB\n", (unsigned long)mtd->size >> 10,
+                                (unsigned long)map->size >> 10);
+                        mtd->size = map->size;
+                }
+                return mtd;
+        }
+
+        kfree(lpddr->qinfo);
+        kfree(lpddr);
+        map->fldrv_priv = NULL;
+        return NULL;
+}
+
+static struct mtd_chip_driver lpddr_chipdrv = {
+        .probe          = lpddr_probe,
+        .name           = "qinfo_probe",
+        .module         = THIS_MODULE
+};
+
+static int __init lpddr_probe_init(void)
+{
+        register_mtd_chip_driver(&lpddr_chipdrv);
+        return 0;
+}
+
+static void __exit lpddr_probe_exit(void)
+{
+        unregister_mtd_chip_driver(&lpddr_chipdrv);
+}
+
+module_init(lpddr_probe_init);
+module_exit(lpddr_probe_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Vasiliy Leonenko <vasiliy.leonenko@gmail.com>");
+MODULE_DESCRIPTION("Driver to probe qinfo flash chips");
+
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index 5ea169362164..0225cbbf22de 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -10,8 +10,8 @@ config MTD_COMPLEX_MAPPINGS
           paged mappings of flash chips.
 
 config MTD_PHYSMAP
-        tristate "CFI Flash device in physical memory map"
-        depends on MTD_CFI || MTD_JEDECPROBE || MTD_ROM
+        tristate "Flash device in physical memory map"
+        depends on MTD_CFI || MTD_JEDECPROBE || MTD_ROM || MTD_LPDDR
         help
           This provides a 'mapping' driver which allows the NOR Flash and
           ROM driver code to communicate with chips which are mapped
@@ -23,9 +23,20 @@ config MTD_PHYSMAP
           To compile this driver as a module, choose M here: the
           module will be called physmap.
 
+config MTD_PHYSMAP_COMPAT
+        bool "Physmap compat support"
+        depends on MTD_PHYSMAP
+        default n
+        help
+          Setup a simple mapping via the Kconfig options.  Normally the
+          physmap configuration options are done via your board's
+          resource file.
+
+          If unsure, say N here.
+
 config MTD_PHYSMAP_START
         hex "Physical start address of flash mapping"
-        depends on MTD_PHYSMAP
+        depends on MTD_PHYSMAP_COMPAT
         default "0x8000000"
         help
           This is the physical memory location at which the flash chips
@@ -37,7 +48,7 @@ config MTD_PHYSMAP_START
 
 config MTD_PHYSMAP_LEN
         hex "Physical length of flash mapping"
-        depends on MTD_PHYSMAP
+        depends on MTD_PHYSMAP_COMPAT
         default "0"
         help
           This is the total length of the mapping of the flash chips on
@@ -51,7 +62,7 @@ config MTD_PHYSMAP_LEN
 
 config MTD_PHYSMAP_BANKWIDTH
         int "Bank width in octets"
-        depends on MTD_PHYSMAP
+        depends on MTD_PHYSMAP_COMPAT
         default "2"
         help
           This is the total width of the data bus of the flash devices
diff --git a/drivers/mtd/maps/alchemy-flash.c b/drivers/mtd/maps/alchemy-flash.c
index 82811bcb0436..845ad4f2a542 100644
--- a/drivers/mtd/maps/alchemy-flash.c
+++ b/drivers/mtd/maps/alchemy-flash.c
@@ -111,7 +111,7 @@ static struct mtd_partition alchemy_partitions[] = {
 
 static struct mtd_info *mymtd;
 
-int __init alchemy_mtd_init(void)
+static int __init alchemy_mtd_init(void)
 {
         struct mtd_partition *parts;
         int nb_parts = 0;
diff --git a/drivers/mtd/maps/amd76xrom.c b/drivers/mtd/maps/amd76xrom.c
index d1eec7d3243f..237733d094c4 100644
--- a/drivers/mtd/maps/amd76xrom.c
+++ b/drivers/mtd/maps/amd76xrom.c
@@ -232,8 +232,8 @@ static int __devinit amd76xrom_init_one (struct pci_dev *pdev,
                 /* Trim the size if we are larger than the map */
                 if (map->mtd->size > map->map.size) {
                         printk(KERN_WARNING MOD_NAME
-                                " rom(%u) larger than window(%lu). fixing...\n",
-                                map->mtd->size, map->map.size);
+                                " rom(%llu) larger than window(%lu). fixing...\n",
+                                (unsigned long long)map->mtd->size, map->map.size);
                         map->mtd->size = map->map.size;
                 }
                 if (window->rsrc.parent) {
diff --git a/drivers/mtd/maps/cfi_flagadm.c b/drivers/mtd/maps/cfi_flagadm.c
index 0ecc3f6d735b..b4ed81611918 100644
--- a/drivers/mtd/maps/cfi_flagadm.c
+++ b/drivers/mtd/maps/cfi_flagadm.c
@@ -88,7 +88,7 @@ struct mtd_partition flagadm_parts[] = {
 
 static struct mtd_info *mymtd;
 
-int __init init_flagadm(void)
+static int __init init_flagadm(void)
 {
         printk(KERN_NOTICE "FlagaDM flash device: %x at %x\n",
                         FLASH_SIZE, FLASH_PHYS_ADDR);
diff --git a/drivers/mtd/maps/ck804xrom.c b/drivers/mtd/maps/ck804xrom.c
index 1a6feb4474de..5f7a245ed132 100644
--- a/drivers/mtd/maps/ck804xrom.c
+++ b/drivers/mtd/maps/ck804xrom.c
@@ -263,8 +263,8 @@ static int __devinit ck804xrom_init_one (struct pci_dev *pdev,
                 /* Trim the size if we are larger than the map */
                 if (map->mtd->size > map->map.size) {
                         printk(KERN_WARNING MOD_NAME
-                                " rom(%u) larger than window(%lu). fixing...\n",
-                                map->mtd->size, map->map.size);
+                                " rom(%llu) larger than window(%lu). fixing...\n",
+                                (unsigned long long)map->mtd->size, map->map.size);
                         map->mtd->size = map->map.size;
                 }
                 if (window->rsrc.parent) {
diff --git a/drivers/mtd/maps/dbox2-flash.c b/drivers/mtd/maps/dbox2-flash.c
index e115667bf1d0..cfacfa6f45dd 100644
--- a/drivers/mtd/maps/dbox2-flash.c
+++ b/drivers/mtd/maps/dbox2-flash.c
@@ -69,7 +69,7 @@ struct map_info dbox2_flash_map = {
         .phys           = WINDOW_ADDR,
 };
 
-int __init init_dbox2_flash(void)
+static int __init init_dbox2_flash(void)
 {
         printk(KERN_NOTICE "D-Box 2 flash driver (size->0x%X mem->0x%X)\n", WINDOW_SIZE, WINDOW_ADDR);
         dbox2_flash_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
diff --git a/drivers/mtd/maps/edb7312.c b/drivers/mtd/maps/edb7312.c
index 9433738c1664..be9e90b44587 100644
--- a/drivers/mtd/maps/edb7312.c
+++ b/drivers/mtd/maps/edb7312.c
@@ -71,7 +71,7 @@ static const char *probes[] = { "RedBoot", "cmdlinepart", NULL };
 static int                   mtd_parts_nb = 0;
 static struct mtd_partition *mtd_parts    = 0;
 
-int __init init_edb7312nor(void)
+static int __init init_edb7312nor(void)
 {
         static const char *rom_probe_types[] = PROBETYPES;
         const char **type;
diff --git a/drivers/mtd/maps/esb2rom.c b/drivers/mtd/maps/esb2rom.c
index bbbcdd4c8d13..11a2f57df9cf 100644
--- a/drivers/mtd/maps/esb2rom.c
+++ b/drivers/mtd/maps/esb2rom.c
@@ -324,8 +324,8 @@ static int __devinit esb2rom_init_one(struct pci_dev *pdev,
                 /* Trim the size if we are larger than the map */
                 if (map->mtd->size > map->map.size) {
                         printk(KERN_WARNING MOD_NAME
-                                " rom(%u) larger than window(%lu). fixing...\n",
-                                map->mtd->size, map->map.size);
+                                " rom(%llu) larger than window(%lu). fixing...\n",
+                                (unsigned long long)map->mtd->size, map->map.size);
                         map->mtd->size = map->map.size;
                 }
                 if (window->rsrc.parent) {
diff --git a/drivers/mtd/maps/fortunet.c b/drivers/mtd/maps/fortunet.c
index a8e3fde4cbd5..1e43124d498b 100644
--- a/drivers/mtd/maps/fortunet.c
+++ b/drivers/mtd/maps/fortunet.c
@@ -181,7 +181,7 @@ __setup("MTD_Partition=", MTD_New_Partition);
 /* Backwards-spelling-compatibility */
 __setup("MTD_Partion=", MTD_New_Partition);
 
-int __init init_fortunet(void)
+static int __init init_fortunet(void)
 {
         int     ix,iy;
         for(iy=ix=0;ix<MAX_NUM_REGIONS;ix++)
diff --git a/drivers/mtd/maps/h720x-flash.c b/drivers/mtd/maps/h720x-flash.c
index 3b959fad1c4e..72c724fa8c27 100644
--- a/drivers/mtd/maps/h720x-flash.c
+++ b/drivers/mtd/maps/h720x-flash.c
@@ -65,7 +65,7 @@ static const char *probes[] = { "cmdlinepart", NULL };
 /*
  * Initialize FLASH support
  */
-int __init h720x_mtd_init(void)
+static int __init h720x_mtd_init(void)
 {
 
         char    *part_type = NULL;
diff --git a/drivers/mtd/maps/ichxrom.c b/drivers/mtd/maps/ichxrom.c
index aeb6c916e23f..c32bc28920b3 100644
--- a/drivers/mtd/maps/ichxrom.c
+++ b/drivers/mtd/maps/ichxrom.c
@@ -258,8 +258,8 @@ static int __devinit ichxrom_init_one (struct pci_dev *pdev,
                 /* Trim the size if we are larger than the map */
                 if (map->mtd->size > map->map.size) {
                         printk(KERN_WARNING MOD_NAME
-                                " rom(%u) larger than window(%lu). fixing...\n",
-                                map->mtd->size, map->map.size);
+                                " rom(%llu) larger than window(%lu). fixing...\n",
+                                (unsigned long long)map->mtd->size, map->map.size);
                         map->mtd->size = map->map.size;
                 }
                 if (window->rsrc.parent) {
diff --git a/drivers/mtd/maps/impa7.c b/drivers/mtd/maps/impa7.c
index 2682ab51a367..998a27da97f3 100644
--- a/drivers/mtd/maps/impa7.c
+++ b/drivers/mtd/maps/impa7.c
@@ -70,7 +70,7 @@ static struct mtd_partition *mtd_parts[NUM_FLASHBANKS];
 
 static const char *probes[] = { "cmdlinepart", NULL };
 
-int __init init_impa7(void)
+static int __init init_impa7(void)
 {
         static const char *rom_probe_types[] = PROBETYPES;
         const char **type;
diff --git a/drivers/mtd/maps/ipaq-flash.c b/drivers/mtd/maps/ipaq-flash.c
index ed58f6a77bd9..748c85f635f1 100644
--- a/drivers/mtd/maps/ipaq-flash.c
+++ b/drivers/mtd/maps/ipaq-flash.c
@@ -202,7 +202,7 @@ static const char *part_probes[] = { "cmdlinepart", "RedBoot", NULL };
 
 static int __init h1900_special_case(void);
 
-int __init ipaq_mtd_init(void)
+static int __init ipaq_mtd_init(void)
 {
         struct mtd_partition *parts = NULL;
         int nb_parts = 0;
diff --git a/drivers/mtd/maps/mbx860.c b/drivers/mtd/maps/mbx860.c
index 706f67394b07..0eb5a7c85380 100644
--- a/drivers/mtd/maps/mbx860.c
+++ b/drivers/mtd/maps/mbx860.c
@@ -55,7 +55,7 @@ struct map_info mbx_map = {
         .bankwidth = 4,
 };
 
-int __init init_mbx(void)
+static int __init init_mbx(void)
 {
         printk(KERN_NOTICE "Motorola MBX flash device: 0x%x at 0x%x\n", WINDOW_SIZE*4, WINDOW_ADDR);
         mbx_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE * 4);
diff --git a/drivers/mtd/maps/nettel.c b/drivers/mtd/maps/nettel.c
index 965e6c6d6ab0..a97133eb9d70 100644
--- a/drivers/mtd/maps/nettel.c
+++ b/drivers/mtd/maps/nettel.c
@@ -226,7 +226,7 @@ static int __init nettel_init(void)
 
         if ((amd_mtd = do_map_probe("jedec_probe", &nettel_amd_map))) {
                 printk(KERN_NOTICE "SNAPGEAR: AMD flash device size = %dK\n",
-                        amd_mtd->size>>10);
+                        (int)(amd_mtd->size>>10));
 
                 amd_mtd->owner = THIS_MODULE;
 
@@ -357,13 +357,12 @@ static int __init nettel_init(void)
                 *intel1par = 0;
         }
 
-        printk(KERN_NOTICE "SNAPGEAR: Intel flash device size = %dK\n",
-                (intel_mtd->size >> 10));
+        printk(KERN_NOTICE "SNAPGEAR: Intel flash device size = %lldKiB\n",
+               (unsigned long long)(intel_mtd->size >> 10));
 
         intel_mtd->owner = THIS_MODULE;
 
-        num_intel_partitions = sizeof(nettel_intel_partitions) /
-                sizeof(nettel_intel_partitions[0]);
+        num_intel_partitions = ARRAY_SIZE(nettel_intel_partitions);
 
         if (intelboot) {
                 /*
diff --git a/drivers/mtd/maps/octagon-5066.c b/drivers/mtd/maps/octagon-5066.c
index 43e04c1d22a9..2b2e45093218 100644
--- a/drivers/mtd/maps/octagon-5066.c
+++ b/drivers/mtd/maps/octagon-5066.c
@@ -184,7 +184,7 @@ void cleanup_oct5066(void)
         release_region(PAGE_IO, 1);
 }
 
-int __init init_oct5066(void)
+static int __init init_oct5066(void)
 {
         int i;
         int ret = 0;
diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c
index 1db16e549e38..87743661d48e 100644
--- a/drivers/mtd/maps/physmap.c
+++ b/drivers/mtd/maps/physmap.c
@@ -29,7 +29,6 @@ struct physmap_flash_info {
         struct map_info         map[MAX_RESOURCES];
 #ifdef CONFIG_MTD_PARTITIONS
         int                     nr_parts;
-        struct mtd_partition    *parts;
 #endif
 };
 
@@ -56,14 +55,10 @@ static int physmap_flash_remove(struct platform_device *dev)
         for (i = 0; i < MAX_RESOURCES; i++) {
                 if (info->mtd[i] != NULL) {
 #ifdef CONFIG_MTD_PARTITIONS
-                        if (info->nr_parts) {
+                        if (info->nr_parts || physmap_data->nr_parts)
                                 del_mtd_partitions(info->mtd[i]);
-                                kfree(info->parts);
-                        } else if (physmap_data->nr_parts) {
-                                del_mtd_partitions(info->mtd[i]);
-                        } else {
+                        else
                                 del_mtd_device(info->mtd[i]);
-                        }
 #else
                         del_mtd_device(info->mtd[i]);
 #endif
@@ -73,7 +68,12 @@ static int physmap_flash_remove(struct platform_device *dev)
         return 0;
 }
 
-static const char *rom_probe_types[] = { "cfi_probe", "jedec_probe", "map_rom", NULL };
+static const char *rom_probe_types[] = {
+                                        "cfi_probe",
+                                        "jedec_probe",
+                                        "qinfo_probe",
+                                        "map_rom",
+                                        NULL };
 #ifdef CONFIG_MTD_PARTITIONS
 static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", NULL };
 #endif
@@ -86,6 +86,9 @@ static int physmap_flash_probe(struct platform_device *dev)
         int err = 0;
         int i;
         int devices_found = 0;
+#ifdef CONFIG_MTD_PARTITIONS
+        struct mtd_partition *parts;
+#endif
 
         physmap_data = dev->dev.platform_data;
         if (physmap_data == NULL)
@@ -119,6 +122,7 @@ static int physmap_flash_probe(struct platform_device *dev)
                 info->map[i].size = dev->resource[i].end - dev->resource[i].start + 1;
                 info->map[i].bankwidth = physmap_data->width;
                 info->map[i].set_vpp = physmap_data->set_vpp;
+                info->map[i].pfow_base = physmap_data->pfow_base;
 
                 info->map[i].virt = devm_ioremap(&dev->dev, info->map[i].phys,
                                                  info->map[i].size);
@@ -163,9 +167,10 @@ static int physmap_flash_probe(struct platform_device *dev)
                 goto err_out;
 
 #ifdef CONFIG_MTD_PARTITIONS
-        err = parse_mtd_partitions(info->cmtd, part_probe_types, &info->parts, 0);
+        err = parse_mtd_partitions(info->cmtd, part_probe_types, &parts, 0);
         if (err > 0) {
-                add_mtd_partitions(info->cmtd, info->parts, err);
+                add_mtd_partitions(info->cmtd, parts, err);
+                kfree(parts);
                 return 0;
         }
 
@@ -251,14 +256,7 @@ static struct platform_driver physmap_flash_driver = {
 };
 
 
-#ifdef CONFIG_MTD_PHYSMAP_LEN
-#if CONFIG_MTD_PHYSMAP_LEN != 0
-#warning using PHYSMAP compat code
-#define PHYSMAP_COMPAT
-#endif
-#endif
-
-#ifdef PHYSMAP_COMPAT
+#ifdef CONFIG_MTD_PHYSMAP_COMPAT
 static struct physmap_flash_data physmap_flash_data = {
         .width          = CONFIG_MTD_PHYSMAP_BANKWIDTH,
 };
@@ -302,7 +300,7 @@ static int __init physmap_init(void)
         int err;
 
         err = platform_driver_register(&physmap_flash_driver);
-#ifdef PHYSMAP_COMPAT
+#ifdef CONFIG_MTD_PHYSMAP_COMPAT
         if (err == 0)
                 platform_device_register(&physmap_flash);
 #endif
@@ -312,7 +310,7 @@ static int __init physmap_init(void)
 
 static void __exit physmap_exit(void)
 {
-#ifdef PHYSMAP_COMPAT
+#ifdef CONFIG_MTD_PHYSMAP_COMPAT
         platform_device_unregister(&physmap_flash);
 #endif
         platform_driver_unregister(&physmap_flash_driver);
@@ -326,8 +324,7 @@ MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
 MODULE_DESCRIPTION("Generic configurable MTD map driver");
 
 /* legacy platform drivers can't hotplug or coldplg */
-#ifndef PHYSMAP_COMPAT
+#ifndef CONFIG_MTD_PHYSMAP_COMPAT
 /* work with hotplug and coldplug */
 MODULE_ALIAS("platform:physmap-flash");
 #endif
-
diff --git a/drivers/mtd/maps/pmcmsp-flash.c b/drivers/mtd/maps/pmcmsp-flash.c
index f43ba2815cbb..4768bd5459d6 100644
--- a/drivers/mtd/maps/pmcmsp-flash.c
+++ b/drivers/mtd/maps/pmcmsp-flash.c
@@ -48,7 +48,7 @@ static int fcnt;
 
 #define DEBUG_MARKER printk(KERN_NOTICE "%s[%d]\n", __func__, __LINE__)
 
-int __init init_msp_flash(void)
+static int __init init_msp_flash(void)
 {
         int i, j;
         int offset, coff;
diff --git a/drivers/mtd/maps/redwood.c b/drivers/mtd/maps/redwood.c
index de002eb1a7fe..933c0b63b016 100644
--- a/drivers/mtd/maps/redwood.c
+++ b/drivers/mtd/maps/redwood.c
@@ -122,7 +122,7 @@ struct map_info redwood_flash_map = {
 
 static struct mtd_info *redwood_mtd;
 
-int __init init_redwood_flash(void)
+static int __init init_redwood_flash(void)
 {
         int err;
 
diff --git a/drivers/mtd/maps/rpxlite.c b/drivers/mtd/maps/rpxlite.c
index 14d90edb4430..3e3ef53d4fd4 100644
--- a/drivers/mtd/maps/rpxlite.c
+++ b/drivers/mtd/maps/rpxlite.c
@@ -23,7 +23,7 @@ static struct map_info rpxlite_map = {
         .phys = WINDOW_ADDR,
 };
 
-int __init init_rpxlite(void)
+static int __init init_rpxlite(void)
 {
         printk(KERN_NOTICE "RPX Lite or CLLF flash device: %x at %x\n", WINDOW_SIZE*4, WINDOW_ADDR);
         rpxlite_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE * 4);
diff --git a/drivers/mtd/maps/sbc8240.c b/drivers/mtd/maps/sbc8240.c
index 6e1e99cd2b59..d5374cdcb163 100644
--- a/drivers/mtd/maps/sbc8240.c
+++ b/drivers/mtd/maps/sbc8240.c
@@ -136,7 +136,7 @@ static struct mtd_part_def sbc8240_part_banks[NUM_FLASH_BANKS];
 #endif  /* CONFIG_MTD_PARTITIONS */
 
 
-int __init init_sbc8240_mtd (void)
+static int __init init_sbc8240_mtd (void)
 {
         static struct _cjs {
                 u_long addr;
diff --git a/drivers/mtd/maps/scb2_flash.c b/drivers/mtd/maps/scb2_flash.c
index 21169e6d646c..7e329f09a548 100644
--- a/drivers/mtd/maps/scb2_flash.c
+++ b/drivers/mtd/maps/scb2_flash.c
@@ -118,7 +118,8 @@ scb2_fixup_mtd(struct mtd_info *mtd)
                 struct mtd_erase_region_info *region = &mtd->eraseregions[i];
 
                 if (region->numblocks * region->erasesize > mtd->size) {
-                        region->numblocks = (mtd->size / region->erasesize);
+                        region->numblocks = ((unsigned long)mtd->size /
+                                                region->erasesize);
                         done = 1;
                 } else {
                         region->numblocks = 0;
@@ -187,8 +188,9 @@ scb2_flash_probe(struct pci_dev *dev, const struct pci_device_id *ent)
                 return -ENODEV;
         }
 
-        printk(KERN_NOTICE MODNAME ": chip size 0x%x at offset 0x%x\n",
-               scb2_mtd->size, SCB2_WINDOW - scb2_mtd->size);
+        printk(KERN_NOTICE MODNAME ": chip size 0x%llx at offset 0x%llx\n",
+               (unsigned long long)scb2_mtd->size,
+               (unsigned long long)(SCB2_WINDOW - scb2_mtd->size));
 
         add_mtd_device(scb2_mtd);
 
diff --git a/drivers/mtd/maps/sharpsl-flash.c b/drivers/mtd/maps/sharpsl-flash.c
index 026eab028189..b392f096c706 100644
--- a/drivers/mtd/maps/sharpsl-flash.c
+++ b/drivers/mtd/maps/sharpsl-flash.c
@@ -47,7 +47,7 @@ static struct mtd_partition sharpsl_partitions[1] = {
         }
 };
 
-int __init init_sharpsl(void)
+static int __init init_sharpsl(void)
 {
         struct mtd_partition *parts;
         int nb_parts = 0;
diff --git a/drivers/mtd/maps/tqm8xxl.c b/drivers/mtd/maps/tqm8xxl.c
index a5d3d8531faa..60146984f4be 100644
--- a/drivers/mtd/maps/tqm8xxl.c
+++ b/drivers/mtd/maps/tqm8xxl.c
@@ -109,7 +109,7 @@ static struct mtd_partition tqm8xxl_fs_partitions[] = {
 };
 #endif
 
-int __init init_tqm_mtd(void)
+static int __init init_tqm_mtd(void)
 {
         int idx = 0, ret = 0;
         unsigned long flash_addr, flash_size, mtd_size = 0;
diff --git a/drivers/mtd/maps/uclinux.c b/drivers/mtd/maps/uclinux.c
index 0dc645f8152f..81756e397711 100644
--- a/drivers/mtd/maps/uclinux.c
+++ b/drivers/mtd/maps/uclinux.c
@@ -51,7 +51,7 @@ int uclinux_point(struct mtd_info *mtd, loff_t from, size_t len,
 
 /****************************************************************************/
 
-int __init uclinux_mtd_init(void)
+static int __init uclinux_mtd_init(void)
 {
         struct mtd_info *mtd;
         struct map_info *mapp;
@@ -94,7 +94,7 @@ int __init uclinux_mtd_init(void)
 
 /****************************************************************************/
 
-void __exit uclinux_mtd_cleanup(void)
+static void __exit uclinux_mtd_cleanup(void)
 {
         if (uclinux_ram_mtdinfo) {
                 del_mtd_partitions(uclinux_ram_mtdinfo);
diff --git a/drivers/mtd/maps/vmax301.c b/drivers/mtd/maps/vmax301.c
index 5a0c9a353b0f..6d452dcdfe34 100644
--- a/drivers/mtd/maps/vmax301.c
+++ b/drivers/mtd/maps/vmax301.c
@@ -146,7 +146,7 @@ static void __exit cleanup_vmax301(void)
         iounmap((void *)vmax_map[0].map_priv_1 - WINDOW_START);
 }
 
-int __init init_vmax301(void)
+static int __init init_vmax301(void)
 {
         int i;
         unsigned long iomapadr;
diff --git a/drivers/mtd/maps/wr_sbc82xx_flash.c b/drivers/mtd/maps/wr_sbc82xx_flash.c
index 413b0cf9bbd2..933a2b6598b4 100644
--- a/drivers/mtd/maps/wr_sbc82xx_flash.c
+++ b/drivers/mtd/maps/wr_sbc82xx_flash.c
@@ -74,7 +74,7 @@ do {								\
         }                                                       \
 } while (0);
 
-int __init init_sbc82xx_flash(void)
+static int __init init_sbc82xx_flash(void)
 {
         volatile memctl_cpm2_t *mc = &cpm2_immr->im_memctl;
         int bigflash;
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index bcffeda2df3d..e9ec59e9a566 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -450,16 +450,20 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
                 if (!erase)
                         ret = -ENOMEM;
                 else {
+                        struct erase_info_user einfo;
+
                         wait_queue_head_t waitq;
                         DECLARE_WAITQUEUE(wait, current);
 
                         init_waitqueue_head(&waitq);
 
-                        if (copy_from_user(&erase->addr, argp,
+                        if (copy_from_user(&einfo, argp,
                                     sizeof(struct erase_info_user))) {
                                 kfree(erase);
                                 return -EFAULT;
                         }
+                        erase->addr = einfo.start;
+                        erase->len = einfo.length;
                         erase->mtd = mtd;
                         erase->callback = mtdchar_erase_callback;
                         erase->priv = (unsigned long)&waitq;
diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index 1a05cf37851e..3dbb1b38db66 100644
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -197,7 +197,7 @@ concat_writev(struct mtd_info *mtd, const struct kvec *vecs,
                         continue;
                 }
 
-                size = min(total_len, (size_t)(subdev->size - to));
+                size = min_t(uint64_t, total_len, subdev->size - to);
                 wsize = size; /* store for future use */
 
                 entry_high = entry_low;
@@ -385,7 +385,7 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
         struct mtd_concat *concat = CONCAT(mtd);
         struct mtd_info *subdev;
         int i, err;
-        u_int32_t length, offset = 0;
+        uint64_t length, offset = 0;
         struct erase_info *erase;
 
         if (!(mtd->flags & MTD_WRITEABLE))
@@ -518,7 +518,7 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
         return 0;
 }
 
-static int concat_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int concat_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct mtd_concat *concat = CONCAT(mtd);
         int i, err = -EINVAL;
@@ -528,7 +528,7 @@ static int concat_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
 
         for (i = 0; i < concat->num_subdev; i++) {
                 struct mtd_info *subdev = concat->subdev[i];
-                size_t size;
+                uint64_t size;
 
                 if (ofs >= subdev->size) {
                         size = 0;
@@ -556,7 +556,7 @@ static int concat_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
         return err;
 }
 
-static int concat_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int concat_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct mtd_concat *concat = CONCAT(mtd);
         int i, err = 0;
@@ -566,7 +566,7 @@ static int concat_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
 
         for (i = 0; i < concat->num_subdev; i++) {
                 struct mtd_info *subdev = concat->subdev[i];
-                size_t size;
+                uint64_t size;
 
                 if (ofs >= subdev->size) {
                         size = 0;
@@ -696,7 +696,7 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
         int i;
         size_t size;
         struct mtd_concat *concat;
-        u_int32_t max_erasesize, curr_erasesize;
+        uint32_t max_erasesize, curr_erasesize;
         int num_erase_region;
 
         printk(KERN_NOTICE "Concatenating MTD devices:\n");
@@ -842,12 +842,14 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
                 concat->mtd.erasesize = curr_erasesize;
                 concat->mtd.numeraseregions = 0;
         } else {
+                uint64_t tmp64;
+
                 /*
                  * erase block size varies across the subdevices: allocate
                  * space to store the data describing the variable erase regions
                  */
                 struct mtd_erase_region_info *erase_region_p;
-                u_int32_t begin, position;
+                uint64_t begin, position;
 
                 concat->mtd.erasesize = max_erasesize;
                 concat->mtd.numeraseregions = num_erase_region;
@@ -879,8 +881,9 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
                                         erase_region_p->offset = begin;
                                         erase_region_p->erasesize =
                                             curr_erasesize;
-                                        erase_region_p->numblocks =
-                                            (position - begin) / curr_erasesize;
+                                        tmp64 = position - begin;
+                                        do_div(tmp64, curr_erasesize);
+                                        erase_region_p->numblocks = tmp64;
                                         begin = position;
 
                                         curr_erasesize = subdev[i]->erasesize;
@@ -897,9 +900,9 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
                                                 erase_region_p->offset = begin;
                                                 erase_region_p->erasesize =
                                                     curr_erasesize;
-                                                erase_region_p->numblocks =
-                                                    (position -
-                                                     begin) / curr_erasesize;
+                                                tmp64 = position - begin;
+                                                do_div(tmp64, curr_erasesize);
+                                                erase_region_p->numblocks = tmp64;
                                                 begin = position;
 
                                                 curr_erasesize =
@@ -909,14 +912,16 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
                                         }
                                         position +=
                                             subdev[i]->eraseregions[j].
-                                            numblocks * curr_erasesize;
+                                            numblocks * (uint64_t)curr_erasesize;
                                 }
                         }
                 }
                 /* Now write the final entry */
                 erase_region_p->offset = begin;
                 erase_region_p->erasesize = curr_erasesize;
-                erase_region_p->numblocks = (position - begin) / curr_erasesize;
+                tmp64 = position - begin;
+                do_div(tmp64, curr_erasesize);
+                erase_region_p->numblocks = tmp64;
         }
 
         return &concat->mtd;
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index a9d246949820..76fe0a1e7a5e 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -57,6 +57,19 @@ int add_mtd_device(struct mtd_info *mtd)
                         mtd->index = i;
                         mtd->usecount = 0;
 
+                        if (is_power_of_2(mtd->erasesize))
+                                mtd->erasesize_shift = ffs(mtd->erasesize) - 1;
+                        else
+                                mtd->erasesize_shift = 0;
+
+                        if (is_power_of_2(mtd->writesize))
+                                mtd->writesize_shift = ffs(mtd->writesize) - 1;
+                        else
+                                mtd->writesize_shift = 0;
+
+                        mtd->erasesize_mask = (1 << mtd->erasesize_shift) - 1;
+                        mtd->writesize_mask = (1 << mtd->writesize_shift) - 1;
+
                         /* Some chips always power up locked. Unlock them now */
                         if ((mtd->flags & MTD_WRITEABLE)
                             && (mtd->flags & MTD_POWERUP_LOCK) && mtd->unlock) {
@@ -344,7 +357,8 @@ static inline int mtd_proc_info (char *buf, int i)
         if (!this)
                 return 0;
 
-        return sprintf(buf, "mtd%d: %8.8x %8.8x \"%s\"\n", i, this->size,
+        return sprintf(buf, "mtd%d: %8.8llx %8.8x \"%s\"\n", i,
+                       (unsigned long long)this->size,
                        this->erasesize, this->name);
 }
 
diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c
index aebb3b27edbd..1a6b3beabe8d 100644
--- a/drivers/mtd/mtdoops.c
+++ b/drivers/mtd/mtdoops.c
@@ -80,9 +80,9 @@ static int mtdoops_erase_block(struct mtd_info *mtd, int offset)
         if (ret) {
                 set_current_state(TASK_RUNNING);
                 remove_wait_queue(&wait_q, &wait);
-                printk (KERN_WARNING "mtdoops: erase of region [0x%x, 0x%x] "
+                printk (KERN_WARNING "mtdoops: erase of region [0x%llx, 0x%llx] "
                                      "on \"%s\" failed\n",
-                        erase.addr, erase.len, mtd->name);
+                        (unsigned long long)erase.addr, (unsigned long long)erase.len, mtd->name);
                 return ret;
         }
 
@@ -289,7 +289,10 @@ static void mtdoops_notify_add(struct mtd_info *mtd)
         }
 
         cxt->mtd = mtd;
-        cxt->oops_pages = mtd->size / OOPS_PAGE_SIZE;
+        if (mtd->size > INT_MAX)
+                cxt->oops_pages = INT_MAX / OOPS_PAGE_SIZE;
+        else
+                cxt->oops_pages = (int)mtd->size / OOPS_PAGE_SIZE;
 
         find_next_position(cxt);
 
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 3728913fa5fa..144e6b613a77 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -26,7 +26,7 @@ static LIST_HEAD(mtd_partitions);
 struct mtd_part {
         struct mtd_info mtd;
         struct mtd_info *master;
-        u_int32_t offset;
+        uint64_t offset;
         int index;
         struct list_head list;
         int registered;
@@ -235,7 +235,7 @@ void mtd_erase_callback(struct erase_info *instr)
 }
 EXPORT_SYMBOL_GPL(mtd_erase_callback);
 
-static int part_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int part_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct mtd_part *part = PART(mtd);
         if ((len + ofs) > mtd->size)
@@ -243,7 +243,7 @@ static int part_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
         return part->master->lock(part->master, ofs + part->offset, len);
 }
 
-static int part_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         struct mtd_part *part = PART(mtd);
         if ((len + ofs) > mtd->size)
@@ -317,7 +317,7 @@ EXPORT_SYMBOL(del_mtd_partitions);
 
 static struct mtd_part *add_one_partition(struct mtd_info *master,
                 const struct mtd_partition *part, int partno,
-                u_int32_t cur_offset)
+                uint64_t cur_offset)
 {
         struct mtd_part *slave;
 
@@ -395,19 +395,19 @@ static struct mtd_part *add_one_partition(struct mtd_info *master,
                 slave->offset = cur_offset;
         if (slave->offset == MTDPART_OFS_NXTBLK) {
                 slave->offset = cur_offset;
-                if ((cur_offset % master->erasesize) != 0) {
+                if (mtd_mod_by_eb(cur_offset, master) != 0) {
                         /* Round up to next erasesize */
-                        slave->offset = ((cur_offset / master->erasesize) + 1) * master->erasesize;
+                        slave->offset = (mtd_div_by_eb(cur_offset, master) + 1) * master->erasesize;
                         printk(KERN_NOTICE "Moving partition %d: "
-                               "0x%08x -> 0x%08x\n", partno,
-                               cur_offset, slave->offset);
+                               "0x%012llx -> 0x%012llx\n", partno,
+                               (unsigned long long)cur_offset, (unsigned long long)slave->offset);
                 }
         }
         if (slave->mtd.size == MTDPART_SIZ_FULL)
                 slave->mtd.size = master->size - slave->offset;
 
-        printk(KERN_NOTICE "0x%08x-0x%08x : \"%s\"\n", slave->offset,
-                slave->offset + slave->mtd.size, slave->mtd.name);
+        printk(KERN_NOTICE "0x%012llx-0x%012llx : \"%s\"\n", (unsigned long long)slave->offset,
+                (unsigned long long)(slave->offset + slave->mtd.size), slave->mtd.name);
 
         /* let's do some sanity checks */
         if (slave->offset >= master->size) {
@@ -420,13 +420,13 @@ static struct mtd_part *add_one_partition(struct mtd_info *master,
         }
         if (slave->offset + slave->mtd.size > master->size) {
                 slave->mtd.size = master->size - slave->offset;
-                printk(KERN_WARNING"mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#x\n",
-                        part->name, master->name, slave->mtd.size);
+                printk(KERN_WARNING"mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#llx\n",
+                        part->name, master->name, (unsigned long long)slave->mtd.size);
         }
         if (master->numeraseregions > 1) {
                 /* Deal with variable erase size stuff */
                 int i, max = master->numeraseregions;
-                u32 end = slave->offset + slave->mtd.size;
+                u64 end = slave->offset + slave->mtd.size;
                 struct mtd_erase_region_info *regions = master->eraseregions;
 
                 /* Find the first erase regions which is part of this
@@ -449,7 +449,7 @@ static struct mtd_part *add_one_partition(struct mtd_info *master,
         }
 
         if ((slave->mtd.flags & MTD_WRITEABLE) &&
-            (slave->offset % slave->mtd.erasesize)) {
+            mtd_mod_by_eb(slave->offset, &slave->mtd)) {
                 /* Doesn't start on a boundary of major erase size */
                 /* FIXME: Let it be writable if it is on a boundary of
                  * _minor_ erase size though */
@@ -458,7 +458,7 @@ static struct mtd_part *add_one_partition(struct mtd_info *master,
                         part->name);
         }
         if ((slave->mtd.flags & MTD_WRITEABLE) &&
-            (slave->mtd.size % slave->mtd.erasesize)) {
+            mtd_mod_by_eb(slave->mtd.size, &slave->mtd)) {
                 slave->mtd.flags &= ~MTD_WRITEABLE;
                 printk(KERN_WARNING"mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n",
                         part->name);
@@ -466,7 +466,7 @@ static struct mtd_part *add_one_partition(struct mtd_info *master,
 
         slave->mtd.ecclayout = master->ecclayout;
         if (master->block_isbad) {
-                uint32_t offs = 0;
+                uint64_t offs = 0;
 
                 while (offs < slave->mtd.size) {
                         if (master->block_isbad(master,
@@ -501,7 +501,7 @@ int add_mtd_partitions(struct mtd_info *master,
                        int nbparts)
 {
         struct mtd_part *slave;
-        u_int32_t cur_offset = 0;
+        uint64_t cur_offset = 0;
         int i;
 
         printk(KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name);
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index f8ae0400c49c..8b12e6e109d3 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -163,6 +163,13 @@ config MTD_NAND_S3C2410_HWECC
           incorrect ECC generation, and if using these, the default of
           software ECC is preferable.
 
+config MTD_NAND_NDFC
+        tristate "NDFC NanD Flash Controller"
+        depends on 4xx
+        select MTD_NAND_ECC_SMC
+        help
+         NDFC Nand Flash Controllers are integrated in IBM/AMCC's 4xx SoCs
+
 config MTD_NAND_S3C2410_CLKSTOP
         bool "S3C2410 NAND IDLE clock stop"
         depends on MTD_NAND_S3C2410
diff --git a/drivers/mtd/nand/alauda.c b/drivers/mtd/nand/alauda.c
index 962380394855..6d9649159a18 100644
--- a/drivers/mtd/nand/alauda.c
+++ b/drivers/mtd/nand/alauda.c
@@ -676,11 +676,11 @@ static int alauda_probe(struct usb_interface *interface,
                 goto error;
 
         al->write_out = usb_sndbulkpipe(al->dev,
-                        ep_wr->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+                        usb_endpoint_num(ep_wr));
         al->bulk_in = usb_rcvbulkpipe(al->dev,
-                        ep_in->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+                        usb_endpoint_num(ep_in));
         al->bulk_out = usb_sndbulkpipe(al->dev,
-                        ep_out->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+                        usb_endpoint_num(ep_out));
 
         /* second device is identical up to now */
         memcpy(al+1, al, sizeof(*al));
diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c
index b8064bf3aee4..22a6b2e50e91 100644
--- a/drivers/mtd/nand/cafe_nand.c
+++ b/drivers/mtd/nand/cafe_nand.c
@@ -90,7 +90,7 @@ static int timing[3];
 module_param_array(timing, int, &numtimings, 0644);
 
 #ifdef CONFIG_MTD_PARTITIONS
-static const char *part_probes[] = { "RedBoot", NULL };
+static const char *part_probes[] = { "cmdlinepart", "RedBoot", NULL };
 #endif
 
 /* Hrm. Why isn't this already conditional on something in the struct device? */
@@ -805,10 +805,13 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
         add_mtd_device(mtd);
 
 #ifdef CONFIG_MTD_PARTITIONS
+#ifdef CONFIG_MTD_CMDLINE_PARTS
+        mtd->name = "cafe_nand";
+#endif
         nr_parts = parse_mtd_partitions(mtd, part_probes, &parts, 0);
         if (nr_parts > 0) {
                 cafe->parts = parts;
-                dev_info(&cafe->pdev->dev, "%d RedBoot partitions found\n", nr_parts);
+                dev_info(&cafe->pdev->dev, "%d partitions found\n", nr_parts);
                 add_mtd_partitions(mtd, parts, nr_parts);
         }
 #endif
diff --git a/drivers/mtd/nand/fsl_elbc_nand.c b/drivers/mtd/nand/fsl_elbc_nand.c
index 4aa5bd6158da..65929db29446 100644
--- a/drivers/mtd/nand/fsl_elbc_nand.c
+++ b/drivers/mtd/nand/fsl_elbc_nand.c
@@ -777,7 +777,9 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv)
         /* Fill in fsl_elbc_mtd structure */
         priv->mtd.priv = chip;
         priv->mtd.owner = THIS_MODULE;
-        priv->fmr = 0; /* rest filled in later */
+
+        /* Set the ECCM according to the settings in bootloader.*/
+        priv->fmr = in_be32(&lbc->fmr) & FMR_ECCM;
 
         /* fill in nand_chip structure */
         /* set up function call table */
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 0a9c9cd33f96..0c3afccde8a2 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2014,13 +2014,14 @@ static int nand_erase(struct mtd_info *mtd, struct erase_info *instr)
 int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
                     int allowbbt)
 {
-        int page, len, status, pages_per_block, ret, chipnr;
+        int page, status, pages_per_block, ret, chipnr;
         struct nand_chip *chip = mtd->priv;
-        int rewrite_bbt[NAND_MAX_CHIPS]={0};
+        loff_t rewrite_bbt[NAND_MAX_CHIPS]={0};
         unsigned int bbt_masked_page = 0xffffffff;
+        loff_t len;
 
-        DEBUG(MTD_DEBUG_LEVEL3, "nand_erase: start = 0x%08x, len = %i\n",
-              (unsigned int)instr->addr, (unsigned int)instr->len);
+        DEBUG(MTD_DEBUG_LEVEL3, "nand_erase: start = 0x%012llx, len = %llu\n",
+              (unsigned long long)instr->addr, (unsigned long long)instr->len);
 
         /* Start address must align on block boundary */
         if (instr->addr & ((1 << chip->phys_erase_shift) - 1)) {
@@ -2116,7 +2117,8 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
                         DEBUG(MTD_DEBUG_LEVEL0, "nand_erase: "
                               "Failed erase, page 0x%08x\n", page);
                         instr->state = MTD_ERASE_FAILED;
-                        instr->fail_addr = (page << chip->page_shift);
+                        instr->fail_addr =
+                                ((loff_t)page << chip->page_shift);
                         goto erase_exit;
                 }
 
@@ -2126,7 +2128,8 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
                  */
                 if (bbt_masked_page != 0xffffffff &&
                     (page & BBT_PAGE_MASK) == bbt_masked_page)
-                            rewrite_bbt[chipnr] = (page << chip->page_shift);
+                            rewrite_bbt[chipnr] =
+                                        ((loff_t)page << chip->page_shift);
 
                 /* Increment page address and decrement length */
                 len -= (1 << chip->phys_erase_shift);
@@ -2173,7 +2176,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
                         continue;
                 /* update the BBT for chip */
                 DEBUG(MTD_DEBUG_LEVEL0, "nand_erase_nand: nand_update_bbt "
-                      "(%d:0x%0x 0x%0x)\n", chipnr, rewrite_bbt[chipnr],
+                      "(%d:0x%0llx 0x%0x)\n", chipnr, rewrite_bbt[chipnr],
                       chip->bbt_td->pages[chipnr]);
                 nand_update_bbt(mtd, rewrite_bbt[chipnr]);
         }
@@ -2365,7 +2368,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
         if (!mtd->name)
                 mtd->name = type->name;
 
-        chip->chipsize = type->chipsize << 20;
+        chip->chipsize = (uint64_t)type->chipsize << 20;
 
         /* Newer devices have all the information in additional id bytes */
         if (!type->pagesize) {
@@ -2423,7 +2426,10 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd,
 
         chip->bbt_erase_shift = chip->phys_erase_shift =
                 ffs(mtd->erasesize) - 1;
-        chip->chip_shift = ffs(chip->chipsize) - 1;
+        if (chip->chipsize & 0xffffffff)
+                chip->chip_shift = ffs((unsigned)chip->chipsize) - 1;
+        else
+                chip->chip_shift = ffs((unsigned)(chip->chipsize >> 32)) + 32 - 1;
 
         /* Set the bad block position */
         chip->badblockpos = mtd->writesize > 512 ?
@@ -2517,7 +2523,6 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips)
 /**
  * nand_scan_tail - [NAND Interface] Scan for the NAND device
  * @mtd:            MTD device structure
- * @maxchips:       Number of chips to scan for
  *
  * This is the second phase of the normal nand_scan() function. It
  * fills out all the uninitialized function pointers with the defaults
diff --git a/drivers/mtd/nand/nand_bbt.c b/drivers/mtd/nand/nand_bbt.c
index 0b1c48595f12..55c23e5cd210 100644
--- a/drivers/mtd/nand/nand_bbt.c
+++ b/drivers/mtd/nand/nand_bbt.c
@@ -171,16 +171,16 @@ static int read_bbt(struct mtd_info *mtd, uint8_t *buf, int page, int num,
                                 if (tmp == msk)
                                         continue;
                                 if (reserved_block_code && (tmp == reserved_block_code)) {
-                                        printk(KERN_DEBUG "nand_read_bbt: Reserved block at 0x%08x\n",
-                                               ((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
+                                        printk(KERN_DEBUG "nand_read_bbt: Reserved block at 0x%012llx\n",
+                                               (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
                                         this->bbt[offs + (act >> 3)] |= 0x2 << (act & 0x06);
                                         mtd->ecc_stats.bbtblocks++;
                                         continue;
                                 }
                                 /* Leave it for now, if its matured we can move this
                                  * message to MTD_DEBUG_LEVEL0 */
-                                printk(KERN_DEBUG "nand_read_bbt: Bad block at 0x%08x\n",
-                                       ((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
+                                printk(KERN_DEBUG "nand_read_bbt: Bad block at 0x%012llx\n",
+                                       (loff_t)((offs << 2) + (act >> 1)) << this->bbt_erase_shift);
                                 /* Factory marked bad or worn out ? */
                                 if (tmp == 0)
                                         this->bbt[offs + (act >> 3)] |= 0x3 << (act & 0x06);
@@ -284,7 +284,7 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf,
 
         /* Read the primary version, if available */
         if (td->options & NAND_BBT_VERSION) {
-                scan_read_raw(mtd, buf, td->pages[0] << this->page_shift,
+                scan_read_raw(mtd, buf, (loff_t)td->pages[0] << this->page_shift,
                               mtd->writesize);
                 td->version[0] = buf[mtd->writesize + td->veroffs];
                 printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n",
@@ -293,7 +293,7 @@ static int read_abs_bbts(struct mtd_info *mtd, uint8_t *buf,
 
         /* Read the mirror version, if available */
         if (md && (md->options & NAND_BBT_VERSION)) {
-                scan_read_raw(mtd, buf, md->pages[0] << this->page_shift,
+                scan_read_raw(mtd, buf, (loff_t)md->pages[0] << this->page_shift,
                               mtd->writesize);
                 md->version[0] = buf[mtd->writesize + md->veroffs];
                 printk(KERN_DEBUG "Bad block table at page %d, version 0x%02X\n",
@@ -411,7 +411,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
                 numblocks = this->chipsize >> (this->bbt_erase_shift - 1);
                 startblock = chip * numblocks;
                 numblocks += startblock;
-                from = startblock << (this->bbt_erase_shift - 1);
+                from = (loff_t)startblock << (this->bbt_erase_shift - 1);
         }
 
         for (i = startblock; i < numblocks;) {
@@ -428,8 +428,8 @@ static int create_bbt(struct mtd_info *mtd, uint8_t *buf,
 
                 if (ret) {
                         this->bbt[i >> 3] |= 0x03 << (i & 0x6);
-                        printk(KERN_WARNING "Bad eraseblock %d at 0x%08x\n",
-                               i >> 1, (unsigned int)from);
+                        printk(KERN_WARNING "Bad eraseblock %d at 0x%012llx\n",
+                               i >> 1, (unsigned long long)from);
                         mtd->ecc_stats.badblocks++;
                 }
 
@@ -495,7 +495,7 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
                 for (block = 0; block < td->maxblocks; block++) {
 
                         int actblock = startblock + dir * block;
-                        loff_t offs = actblock << this->bbt_erase_shift;
+                        loff_t offs = (loff_t)actblock << this->bbt_erase_shift;
 
                         /* Read first page */
                         scan_read_raw(mtd, buf, offs, mtd->writesize);
@@ -719,7 +719,7 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf,
 
                 memset(&einfo, 0, sizeof(einfo));
                 einfo.mtd = mtd;
-                einfo.addr = (unsigned long)to;
+                einfo.addr = to;
                 einfo.len = 1 << this->bbt_erase_shift;
                 res = nand_erase_nand(mtd, &einfo, 1);
                 if (res < 0)
@@ -729,8 +729,8 @@ static int write_bbt(struct mtd_info *mtd, uint8_t *buf,
                 if (res < 0)
                         goto outerr;
 
-                printk(KERN_DEBUG "Bad block table written to 0x%08x, version "
-                       "0x%02X\n", (unsigned int)to, td->version[chip]);
+                printk(KERN_DEBUG "Bad block table written to 0x%012llx, version "
+                       "0x%02X\n", (unsigned long long)to, td->version[chip]);
 
                 /* Mark it as used */
                 td->pages[chip] = page;
@@ -910,7 +910,7 @@ static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td)
                         newval = oldval | (0x2 << (block & 0x06));
                         this->bbt[(block >> 3)] = newval;
                         if ((oldval != newval) && td->reserved_block_code)
-                                nand_update_bbt(mtd, block << (this->bbt_erase_shift - 1));
+                                nand_update_bbt(mtd, (loff_t)block << (this->bbt_erase_shift - 1));
                         continue;
                 }
                 update = 0;
@@ -931,7 +931,7 @@ static void mark_bbt_region(struct mtd_info *mtd, struct nand_bbt_descr *td)
                    new ones have been marked, then we need to update the stored
                    bbts.  This should only happen once. */
                 if (update && td->reserved_block_code)
-                        nand_update_bbt(mtd, (block - 2) << (this->bbt_erase_shift - 1));
+                        nand_update_bbt(mtd, (loff_t)(block - 2) << (this->bbt_erase_shift - 1));
         }
 }
 
@@ -1027,7 +1027,6 @@ int nand_update_bbt(struct mtd_info *mtd, loff_t offs)
         if (!this->bbt || !td)
                 return -EINVAL;
 
-        len = mtd->size >> (this->bbt_erase_shift + 2);
         /* Allocate a temporary buffer for one eraseblock incl. oob */
         len = (1 << this->bbt_erase_shift);
         len += (len >> this->page_shift) * mtd->oobsize;
diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c
index ae7c57781a68..cd0711b83ac4 100644
--- a/drivers/mtd/nand/nandsim.c
+++ b/drivers/mtd/nand/nandsim.c
@@ -38,6 +38,9 @@
 #include <linux/delay.h>
 #include <linux/list.h>
 #include <linux/random.h>
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/pagemap.h>
 
 /* Default simulator parameters values */
 #if !defined(CONFIG_NANDSIM_FIRST_ID_BYTE)  || \
@@ -100,6 +103,7 @@ static unsigned int bitflips = 0;
 static char *gravepages = NULL;
 static unsigned int rptwear = 0;
 static unsigned int overridesize = 0;
+static char *cache_file = NULL;
 
 module_param(first_id_byte,  uint, 0400);
 module_param(second_id_byte, uint, 0400);
@@ -122,12 +126,13 @@ module_param(bitflips,       uint, 0400);
 module_param(gravepages,     charp, 0400);
 module_param(rptwear,        uint, 0400);
 module_param(overridesize,   uint, 0400);
+module_param(cache_file,     charp, 0400);
 
 MODULE_PARM_DESC(first_id_byte,  "The first byte returned by NAND Flash 'read ID' command (manufacturer ID)");
 MODULE_PARM_DESC(second_id_byte, "The second byte returned by NAND Flash 'read ID' command (chip ID)");
 MODULE_PARM_DESC(third_id_byte,  "The third byte returned by NAND Flash 'read ID' command");
 MODULE_PARM_DESC(fourth_id_byte, "The fourth byte returned by NAND Flash 'read ID' command");
-MODULE_PARM_DESC(access_delay,   "Initial page access delay (microiseconds)");
+MODULE_PARM_DESC(access_delay,   "Initial page access delay (microseconds)");
 MODULE_PARM_DESC(programm_delay, "Page programm delay (microseconds");
 MODULE_PARM_DESC(erase_delay,    "Sector erase delay (milliseconds)");
 MODULE_PARM_DESC(output_cycle,   "Word output (from flash) time (nanodeconds)");
@@ -153,6 +158,7 @@ MODULE_PARM_DESC(rptwear,        "Number of erases inbetween reporting wear, if
 MODULE_PARM_DESC(overridesize,   "Specifies the NAND Flash size overriding the ID bytes. "
                                  "The size is specified in erase blocks and as the exponent of a power of two"
                                  " e.g. 5 means a size of 32 erase blocks");
+MODULE_PARM_DESC(cache_file,     "File to use to cache nand pages instead of memory");
 
 /* The largest possible page size */
 #define NS_LARGEST_PAGE_SIZE    2048
@@ -266,6 +272,9 @@ MODULE_PARM_DESC(overridesize,   "Specifies the NAND Flash size overriding the I
  */
 #define NS_MAX_PREVSTATES 1
 
+/* Maximum page cache pages needed to read or write a NAND page to the cache_file */
+#define NS_MAX_HELD_PAGES 16
+
 /*
  * A union to represent flash memory contents and flash buffer.
  */
@@ -295,6 +304,9 @@ struct nandsim {
         /* The simulated NAND flash pages array */
         union ns_mem *pages;
 
+        /* Slab allocator for nand pages */
+        struct kmem_cache *nand_pages_slab;
+
         /* Internal buffer of page + OOB size bytes */
         union ns_mem buf;
 
@@ -335,6 +347,13 @@ struct nandsim {
                 int ale; /* address Latch Enable */
                 int wp;  /* write Protect */
         } lines;
+
+        /* Fields needed when using a cache file */
+        struct file *cfile; /* Open file */
+        unsigned char *pages_written; /* Which pages have been written */
+        void *file_buf;
+        struct page *held_pages[NS_MAX_HELD_PAGES];
+        int held_cnt;
 };
 
 /*
@@ -420,25 +439,69 @@ static struct mtd_info *nsmtd;
 static u_char ns_verify_buf[NS_LARGEST_PAGE_SIZE];
 
 /*
- * Allocate array of page pointers and initialize the array to NULL
- * pointers.
+ * Allocate array of page pointers, create slab allocation for an array
+ * and initialize the array by NULL pointers.
  *
  * RETURNS: 0 if success, -ENOMEM if memory alloc fails.
  */
 static int alloc_device(struct nandsim *ns)
 {
-        int i;
+        struct file *cfile;
+        int i, err;
+
+        if (cache_file) {
+                cfile = filp_open(cache_file, O_CREAT | O_RDWR | O_LARGEFILE, 0600);
+                if (IS_ERR(cfile))
+                        return PTR_ERR(cfile);
+                if (!cfile->f_op || (!cfile->f_op->read && !cfile->f_op->aio_read)) {
+                        NS_ERR("alloc_device: cache file not readable\n");
+                        err = -EINVAL;
+                        goto err_close;
+                }
+                if (!cfile->f_op->write && !cfile->f_op->aio_write) {
+                        NS_ERR("alloc_device: cache file not writeable\n");
+                        err = -EINVAL;
+                        goto err_close;
+                }
+                ns->pages_written = vmalloc(ns->geom.pgnum);
+                if (!ns->pages_written) {
+                        NS_ERR("alloc_device: unable to allocate pages written array\n");
+                        err = -ENOMEM;
+                        goto err_close;
+                }
+                ns->file_buf = kmalloc(ns->geom.pgszoob, GFP_KERNEL);
+                if (!ns->file_buf) {
+                        NS_ERR("alloc_device: unable to allocate file buf\n");
+                        err = -ENOMEM;
+                        goto err_free;
+                }
+                ns->cfile = cfile;
+                memset(ns->pages_written, 0, ns->geom.pgnum);
+                return 0;
+        }
 
         ns->pages = vmalloc(ns->geom.pgnum * sizeof(union ns_mem));
         if (!ns->pages) {
-                NS_ERR("alloc_map: unable to allocate page array\n");
+                NS_ERR("alloc_device: unable to allocate page array\n");
                 return -ENOMEM;
         }
         for (i = 0; i < ns->geom.pgnum; i++) {
                 ns->pages[i].byte = NULL;
         }
+        ns->nand_pages_slab = kmem_cache_create("nandsim",
+                                                ns->geom.pgszoob, 0, 0, NULL);
+        if (!ns->nand_pages_slab) {
+                NS_ERR("cache_create: unable to create kmem_cache\n");
+                return -ENOMEM;
+        }
 
         return 0;
+
+err_free:
+        vfree(ns->pages_written);
+err_close:
+        filp_close(cfile, NULL);
+        return err;
 }
 
 /*
@@ -448,11 +511,20 @@ static void free_device(struct nandsim *ns)
 {
         int i;
 
+        if (ns->cfile) {
+                kfree(ns->file_buf);
+                vfree(ns->pages_written);
+                filp_close(ns->cfile, NULL);
+                return;
+        }
+
         if (ns->pages) {
                 for (i = 0; i < ns->geom.pgnum; i++) {
                         if (ns->pages[i].byte)
-                                kfree(ns->pages[i].byte);
+                                kmem_cache_free(ns->nand_pages_slab,
+                                                ns->pages[i].byte);
                 }
+                kmem_cache_destroy(ns->nand_pages_slab);
                 vfree(ns->pages);
         }
 }
@@ -464,7 +536,7 @@ static char *get_partition_name(int i)
         return kstrdup(buf, GFP_KERNEL);
 }
 
-static u_int64_t divide(u_int64_t n, u_int32_t d)
+static uint64_t divide(uint64_t n, uint32_t d)
 {
         do_div(n, d);
         return n;
@@ -480,8 +552,8 @@ static int init_nandsim(struct mtd_info *mtd)
         struct nand_chip *chip = (struct nand_chip *)mtd->priv;
         struct nandsim   *ns   = (struct nandsim *)(chip->priv);
         int i, ret = 0;
-        u_int64_t remains;
-        u_int64_t next_offset;
+        uint64_t remains;
+        uint64_t next_offset;
 
         if (NS_IS_INITIALIZED(ns)) {
                 NS_ERR("init_nandsim: nandsim is already initialized\n");
@@ -548,7 +620,7 @@ static int init_nandsim(struct mtd_info *mtd)
         remains = ns->geom.totsz;
         next_offset = 0;
         for (i = 0; i < parts_num; ++i) {
-                u_int64_t part_sz = (u_int64_t)parts[i] * ns->geom.secsz;
+                uint64_t part_sz = (uint64_t)parts[i] * ns->geom.secsz;
 
                 if (!part_sz || part_sz > remains) {
                         NS_ERR("bad partition size.\n");
@@ -1211,6 +1283,97 @@ static int find_operation(struct nandsim *ns, uint32_t flag)
         return -1;
 }
 
+static void put_pages(struct nandsim *ns)
+{
+        int i;
+
+        for (i = 0; i < ns->held_cnt; i++)
+                page_cache_release(ns->held_pages[i]);
+}
+
+/* Get page cache pages in advance to provide NOFS memory allocation */
+static int get_pages(struct nandsim *ns, struct file *file, size_t count, loff_t pos)
+{
+        pgoff_t index, start_index, end_index;
+        struct page *page;
+        struct address_space *mapping = file->f_mapping;
+
+        start_index = pos >> PAGE_CACHE_SHIFT;
+        end_index = (pos + count - 1) >> PAGE_CACHE_SHIFT;
+        if (end_index - start_index + 1 > NS_MAX_HELD_PAGES)
+                return -EINVAL;
+        ns->held_cnt = 0;
+        for (index = start_index; index <= end_index; index++) {
+                page = find_get_page(mapping, index);
+                if (page == NULL) {
+                        page = find_or_create_page(mapping, index, GFP_NOFS);
+                        if (page == NULL) {
+                                write_inode_now(mapping->host, 1);
+                                page = find_or_create_page(mapping, index, GFP_NOFS);
+                        }
+                        if (page == NULL) {
+                                put_pages(ns);
+                                return -ENOMEM;
+                        }
+                        unlock_page(page);
+                }
+                ns->held_pages[ns->held_cnt++] = page;
+        }
+        return 0;
+}
+
+static int set_memalloc(void)
+{
+        if (current->flags & PF_MEMALLOC)
+                return 0;
+        current->flags |= PF_MEMALLOC;
+        return 1;
+}
+
+static void clear_memalloc(int memalloc)
+{
+        if (memalloc)
+                current->flags &= ~PF_MEMALLOC;
+}
+
+static ssize_t read_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t *pos)
+{
+        mm_segment_t old_fs;
+        ssize_t tx;
+        int err, memalloc;
+
+        err = get_pages(ns, file, count, *pos);
+        if (err)
+                return err;
+        old_fs = get_fs();
+        set_fs(get_ds());
+        memalloc = set_memalloc();
+        tx = vfs_read(file, (char __user *)buf, count, pos);
+        clear_memalloc(memalloc);
+        set_fs(old_fs);
+        put_pages(ns);
+        return tx;
+}
+
+static ssize_t write_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t *pos)
+{
+        mm_segment_t old_fs;
+        ssize_t tx;
+        int err, memalloc;
+
+        err = get_pages(ns, file, count, *pos);
+        if (err)
+                return err;
+        old_fs = get_fs();
+        set_fs(get_ds());
+        memalloc = set_memalloc();
+        tx = vfs_write(file, (char __user *)buf, count, pos);
+        clear_memalloc(memalloc);
+        set_fs(old_fs);
+        put_pages(ns);
+        return tx;
+}
+
 /*
  * Returns a pointer to the current page.
  */
@@ -1227,6 +1390,38 @@ static inline u_char *NS_PAGE_BYTE_OFF(struct nandsim *ns)
         return NS_GET_PAGE(ns)->byte + ns->regs.column + ns->regs.off;
 }
 
+int do_read_error(struct nandsim *ns, int num)
+{
+        unsigned int page_no = ns->regs.row;
+
+        if (read_error(page_no)) {
+                int i;
+                memset(ns->buf.byte, 0xFF, num);
+                for (i = 0; i < num; ++i)
+                        ns->buf.byte[i] = random32();
+                NS_WARN("simulating read error in page %u\n", page_no);
+                return 1;
+        }
+        return 0;
+}
+
+void do_bit_flips(struct nandsim *ns, int num)
+{
+        if (bitflips && random32() < (1 << 22)) {
+                int flips = 1;
+                if (bitflips > 1)
+                        flips = (random32() % (int) bitflips) + 1;
+                while (flips--) {
+                        int pos = random32() % (num * 8);
+                        ns->buf.byte[pos / 8] ^= (1 << (pos % 8));
+                        NS_WARN("read_page: flipping bit %d in page %d "
+                                "reading from %d ecc: corrected=%u failed=%u\n",
+                                pos, ns->regs.row, ns->regs.column + ns->regs.off,
+                                nsmtd->ecc_stats.corrected, nsmtd->ecc_stats.failed);
+                }
+        }
+}
+
 /*
  * Fill the NAND buffer with data read from the specified page.
  */
@@ -1234,36 +1429,40 @@ static void read_page(struct nandsim *ns, int num)
 {
         union ns_mem *mypage;
 
+        if (ns->cfile) {
+                if (!ns->pages_written[ns->regs.row]) {
+                        NS_DBG("read_page: page %d not written\n", ns->regs.row);
+                        memset(ns->buf.byte, 0xFF, num);
+                } else {
+                        loff_t pos;
+                        ssize_t tx;
+
+                        NS_DBG("read_page: page %d written, reading from %d\n",
+                                ns->regs.row, ns->regs.column + ns->regs.off);
+                        if (do_read_error(ns, num))
+                                return;
+                        pos = (loff_t)ns->regs.row * ns->geom.pgszoob + ns->regs.column + ns->regs.off;
+                        tx = read_file(ns, ns->cfile, ns->buf.byte, num, &pos);
+                        if (tx != num) {
+                                NS_ERR("read_page: read error for page %d ret %ld\n", ns->regs.row, (long)tx);
+                                return;
+                        }
+                        do_bit_flips(ns, num);
+                }
+                return;
+        }
+
         mypage = NS_GET_PAGE(ns);
         if (mypage->byte == NULL) {
                 NS_DBG("read_page: page %d not allocated\n", ns->regs.row);
                 memset(ns->buf.byte, 0xFF, num);
         } else {
-                unsigned int page_no = ns->regs.row;
                 NS_DBG("read_page: page %d allocated, reading from %d\n",
                         ns->regs.row, ns->regs.column + ns->regs.off);
-                if (read_error(page_no)) {
-                        int i;
-                        memset(ns->buf.byte, 0xFF, num);
-                        for (i = 0; i < num; ++i)
-                                ns->buf.byte[i] = random32();
-                        NS_WARN("simulating read error in page %u\n", page_no);
+                if (do_read_error(ns, num))
                         return;
-                }
                 memcpy(ns->buf.byte, NS_PAGE_BYTE_OFF(ns), num);
-                if (bitflips && random32() < (1 << 22)) {
-                        int flips = 1;
-                        if (bitflips > 1)
-                                flips = (random32() % (int) bitflips) + 1;
-                        while (flips--) {
-                                int pos = random32() % (num * 8);
-                                ns->buf.byte[pos / 8] ^= (1 << (pos % 8));
-                                NS_WARN("read_page: flipping bit %d in page %d "
-                                        "reading from %d ecc: corrected=%u failed=%u\n",
-                                        pos, ns->regs.row, ns->regs.column + ns->regs.off,
-                                        nsmtd->ecc_stats.corrected, nsmtd->ecc_stats.failed);
-                        }
-                }
+                do_bit_flips(ns, num);
         }
 }
 
@@ -1275,11 +1474,20 @@ static void erase_sector(struct nandsim *ns)
         union ns_mem *mypage;
         int i;
 
+        if (ns->cfile) {
+                for (i = 0; i < ns->geom.pgsec; i++)
+                        if (ns->pages_written[ns->regs.row + i]) {
+                                NS_DBG("erase_sector: freeing page %d\n", ns->regs.row + i);
+                                ns->pages_written[ns->regs.row + i] = 0;
+                        }
+                return;
+        }
+
         mypage = NS_GET_PAGE(ns);
         for (i = 0; i < ns->geom.pgsec; i++) {
                 if (mypage->byte != NULL) {
                         NS_DBG("erase_sector: freeing page %d\n", ns->regs.row+i);
-                        kfree(mypage->byte);
+                        kmem_cache_free(ns->nand_pages_slab, mypage->byte);
                         mypage->byte = NULL;
                 }
                 mypage++;
@@ -1295,16 +1503,57 @@ static int prog_page(struct nandsim *ns, int num)
         union ns_mem *mypage;
         u_char *pg_off;
 
+        if (ns->cfile) {
+                loff_t off, pos;
+                ssize_t tx;
+                int all;
+
+                NS_DBG("prog_page: writing page %d\n", ns->regs.row);
+                pg_off = ns->file_buf + ns->regs.column + ns->regs.off;
+                off = (loff_t)ns->regs.row * ns->geom.pgszoob + ns->regs.column + ns->regs.off;
+                if (!ns->pages_written[ns->regs.row]) {
+                        all = 1;
+                        memset(ns->file_buf, 0xff, ns->geom.pgszoob);
+                } else {
+                        all = 0;
+                        pos = off;
+                        tx = read_file(ns, ns->cfile, pg_off, num, &pos);
+                        if (tx != num) {
+                                NS_ERR("prog_page: read error for page %d ret %ld\n", ns->regs.row, (long)tx);
+                                return -1;
+                        }
+                }
+                for (i = 0; i < num; i++)
+                        pg_off[i] &= ns->buf.byte[i];
+                if (all) {
+                        pos = (loff_t)ns->regs.row * ns->geom.pgszoob;
+                        tx = write_file(ns, ns->cfile, ns->file_buf, ns->geom.pgszoob, &pos);
+                        if (tx != ns->geom.pgszoob) {
+                                NS_ERR("prog_page: write error for page %d ret %ld\n", ns->regs.row, (long)tx);
+                                return -1;
+                        }
+                        ns->pages_written[ns->regs.row] = 1;
+                } else {
+                        pos = off;
+                        tx = write_file(ns, ns->cfile, pg_off, num, &pos);
+                        if (tx != num) {
+                                NS_ERR("prog_page: write error for page %d ret %ld\n", ns->regs.row, (long)tx);
+                                return -1;
+                        }
+                }
+                return 0;
+        }
+
         mypage = NS_GET_PAGE(ns);
         if (mypage->byte == NULL) {
                 NS_DBG("prog_page: allocating page %d\n", ns->regs.row);
                 /*
                  * We allocate memory with GFP_NOFS because a flash FS may
                  * utilize this. If it is holding an FS lock, then gets here,
-                 * then kmalloc runs writeback which goes to the FS again
-                 * and deadlocks. This was seen in practice.
+                 * then kernel memory alloc runs writeback which goes to the FS
+                 * again and deadlocks. This was seen in practice.
                  */
-                mypage->byte = kmalloc(ns->geom.pgszoob, GFP_NOFS);
+                mypage->byte = kmem_cache_alloc(ns->nand_pages_slab, GFP_NOFS);
                 if (mypage->byte == NULL) {
                         NS_ERR("prog_page: error allocating memory for page %d\n", ns->regs.row);
                         return -1;
@@ -1736,13 +1985,17 @@ static void ns_nand_write_byte(struct mtd_info *mtd, u_char byte)
 
                 /* Check if chip is expecting command */
                 if (NS_STATE(ns->nxstate) != STATE_UNKNOWN && !(ns->nxstate & STATE_CMD_MASK)) {
-                        /*
-                         * We are in situation when something else (not command)
-                         * was expected but command was input. In this case ignore
-                         * previous command(s)/state(s) and accept the last one.
-                         */
-                        NS_WARN("write_byte: command (%#x) wasn't expected, expected state is %s, "
-                                "ignore previous states\n", (uint)byte, get_state_name(ns->nxstate));
+                        /* Do not warn if only 2 id bytes are read */
+                        if (!(ns->regs.command == NAND_CMD_READID &&
+                            NS_STATE(ns->state) == STATE_DATAOUT_ID && ns->regs.count == 2)) {
+                                /*
+                                 * We are in situation when something else (not command)
+                                 * was expected but command was input. In this case ignore
+                                 * previous command(s)/state(s) and accept the last one.
+                                 */
+                                NS_WARN("write_byte: command (%#x) wasn't expected, expected state is %s, "
+                                        "ignore previous states\n", (uint)byte, get_state_name(ns->nxstate));
+                        }
                         switch_to_ready_state(ns, NS_STATUS_FAILED(ns));
                 }
 
@@ -2044,7 +2297,7 @@ static int __init ns_init_module(void)
         }
 
         if (overridesize) {
-                u_int64_t new_size = (u_int64_t)nsmtd->erasesize << overridesize;
+                uint64_t new_size = (uint64_t)nsmtd->erasesize << overridesize;
                 if (new_size >> overridesize != nsmtd->erasesize) {
                         NS_ERR("overridesize is too big\n");
                         goto err_exit;
diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c
index 955959eb02d4..582cf80f555a 100644
--- a/drivers/mtd/nand/ndfc.c
+++ b/drivers/mtd/nand/ndfc.c
@@ -2,12 +2,20 @@
  *  drivers/mtd/ndfc.c
  *
  *  Overview:
- *   Platform independend driver for NDFC (NanD Flash Controller)
+ *   Platform independent driver for NDFC (NanD Flash Controller)
  *   integrated into EP440 cores
  *
+ *   Ported to an OF platform driver by Sean MacLennan
+ *
+ *   The NDFC supports multiple chips, but this driver only supports a
+ *   single chip since I do not have access to any boards with
+ *   multiple chips.
+ *
  *  Author: Thomas Gleixner
  *
  *  Copyright 2006 IBM
+ *  Copyright 2008 PIKA Technologies
+ *    Sean MacLennan <smaclennan@pikatech.com>
  *
  *  This program is free software; you can redistribute  it and/or modify it
  *  under  the terms of  the GNU General  Public License as published by the
@@ -21,27 +29,20 @@
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/ndfc.h>
 #include <linux/mtd/mtd.h>
-#include <linux/platform_device.h>
-
+#include <linux/of_platform.h>
 #include <asm/io.h>
-#ifdef CONFIG_40x
-#include <asm/ibm405.h>
-#else
-#include <asm/ibm44x.h>
-#endif
-
-struct ndfc_nand_mtd {
-        struct mtd_info                 mtd;
-        struct nand_chip                chip;
-        struct platform_nand_chip       *pl_chip;
-};
 
-static struct ndfc_nand_mtd ndfc_mtd[NDFC_MAX_BANKS];
 
 struct ndfc_controller {
-        void __iomem            *ndfcbase;
-        struct nand_hw_control  ndfc_control;
-        atomic_t                childs_active;
+        struct of_device *ofdev;
+        void __iomem *ndfcbase;
+        struct mtd_info mtd;
+        struct nand_chip chip;
+        int chip_select;
+        struct nand_hw_control ndfc_control;
+#ifdef CONFIG_MTD_PARTITIONS
+        struct mtd_partition *parts;
+#endif
 };
 
 static struct ndfc_controller ndfc_ctrl;
@@ -50,17 +51,14 @@ static void ndfc_select_chip(struct mtd_info *mtd, int chip)
 {
         uint32_t ccr;
         struct ndfc_controller *ndfc = &ndfc_ctrl;
-        struct nand_chip *nandchip = mtd->priv;
-        struct ndfc_nand_mtd *nandmtd = nandchip->priv;
-        struct platform_nand_chip *pchip = nandmtd->pl_chip;
 
-        ccr = __raw_readl(ndfc->ndfcbase + NDFC_CCR);
+        ccr = in_be32(ndfc->ndfcbase + NDFC_CCR);
         if (chip >= 0) {
                 ccr &= ~NDFC_CCR_BS_MASK;
-                ccr |= NDFC_CCR_BS(chip + pchip->chip_offset);
+                ccr |= NDFC_CCR_BS(chip + ndfc->chip_select);
         } else
                 ccr |= NDFC_CCR_RESET_CE;
-        __raw_writel(ccr, ndfc->ndfcbase + NDFC_CCR);
+        out_be32(ndfc->ndfcbase + NDFC_CCR, ccr);
 }
 
 static void ndfc_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
@@ -80,7 +78,7 @@ static int ndfc_ready(struct mtd_info *mtd)
 {
         struct ndfc_controller *ndfc = &ndfc_ctrl;
 
-        return __raw_readl(ndfc->ndfcbase + NDFC_STAT) & NDFC_STAT_IS_READY;
+        return in_be32(ndfc->ndfcbase + NDFC_STAT) & NDFC_STAT_IS_READY;
 }
 
 static void ndfc_enable_hwecc(struct mtd_info *mtd, int mode)
@@ -88,9 +86,9 @@ static void ndfc_enable_hwecc(struct mtd_info *mtd, int mode)
         uint32_t ccr;
         struct ndfc_controller *ndfc = &ndfc_ctrl;
 
-        ccr = __raw_readl(ndfc->ndfcbase + NDFC_CCR);
+        ccr = in_be32(ndfc->ndfcbase + NDFC_CCR);
         ccr |= NDFC_CCR_RESET_ECC;
-        __raw_writel(ccr, ndfc->ndfcbase + NDFC_CCR);
+        out_be32(ndfc->ndfcbase + NDFC_CCR, ccr);
         wmb();
 }
 
@@ -102,9 +100,10 @@ static int ndfc_calculate_ecc(struct mtd_info *mtd,
         uint8_t *p = (uint8_t *)&ecc;
 
         wmb();
-        ecc = __raw_readl(ndfc->ndfcbase + NDFC_ECC);
-        ecc_code[0] = p[1];
-        ecc_code[1] = p[2];
+        ecc = in_be32(ndfc->ndfcbase + NDFC_ECC);
+        /* The NDFC uses Smart Media (SMC) bytes order */
+        ecc_code[0] = p[2];
+        ecc_code[1] = p[1];
         ecc_code[2] = p[3];
 
         return 0;
@@ -123,7 +122,7 @@ static void ndfc_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
         uint32_t *p = (uint32_t *) buf;
 
         for(;len > 0; len -= 4)
-                *p++ = __raw_readl(ndfc->ndfcbase + NDFC_DATA);
+                *p++ = in_be32(ndfc->ndfcbase + NDFC_DATA);
 }
 
 static void ndfc_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
@@ -132,7 +131,7 @@ static void ndfc_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
         uint32_t *p = (uint32_t *) buf;
 
         for(;len > 0; len -= 4)
-                __raw_writel(*p++, ndfc->ndfcbase + NDFC_DATA);
+                out_be32(ndfc->ndfcbase + NDFC_DATA, *p++);
 }
 
 static int ndfc_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
@@ -141,7 +140,7 @@ static int ndfc_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
         uint32_t *p = (uint32_t *) buf;
 
         for(;len > 0; len -= 4)
-                if (*p++ != __raw_readl(ndfc->ndfcbase + NDFC_DATA))
+                if (*p++ != in_be32(ndfc->ndfcbase + NDFC_DATA))
                         return -EFAULT;
         return 0;
 }
@@ -149,10 +148,19 @@ static int ndfc_verify_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
 /*
  * Initialize chip structure
  */
-static void ndfc_chip_init(struct ndfc_nand_mtd *mtd)
+static int ndfc_chip_init(struct ndfc_controller *ndfc,
+                          struct device_node *node)
 {
-        struct ndfc_controller *ndfc = &ndfc_ctrl;
-        struct nand_chip *chip = &mtd->chip;
+#ifdef CONFIG_MTD_PARTITIONS
+#ifdef CONFIG_MTD_CMDLINE_PARTS
+        static const char *part_types[] = { "cmdlinepart", NULL };
+#else
+        static const char *part_types[] = { NULL };
+#endif
+#endif
+        struct device_node *flash_np;
+        struct nand_chip *chip = &ndfc->chip;
+        int ret;
 
         chip->IO_ADDR_R = ndfc->ndfcbase + NDFC_DATA;
         chip->IO_ADDR_W = ndfc->ndfcbase + NDFC_DATA;
@@ -160,8 +168,6 @@ static void ndfc_chip_init(struct ndfc_nand_mtd *mtd)
         chip->dev_ready = ndfc_ready;
         chip->select_chip = ndfc_select_chip;
         chip->chip_delay = 50;
-        chip->priv = mtd;
-        chip->options = mtd->pl_chip->options;
         chip->controller = &ndfc->ndfc_control;
         chip->read_buf = ndfc_read_buf;
         chip->write_buf = ndfc_write_buf;
@@ -172,143 +178,136 @@ static void ndfc_chip_init(struct ndfc_nand_mtd *mtd)
         chip->ecc.mode = NAND_ECC_HW;
         chip->ecc.size = 256;
         chip->ecc.bytes = 3;
-        chip->ecclayout = chip->ecc.layout = mtd->pl_chip->ecclayout;
-        mtd->mtd.priv = chip;
-        mtd->mtd.owner = THIS_MODULE;
-}
-
-static int ndfc_chip_probe(struct platform_device *pdev)
-{
-        struct platform_nand_chip *nc = pdev->dev.platform_data;
-        struct ndfc_chip_settings *settings = nc->priv;
-        struct ndfc_controller *ndfc = &ndfc_ctrl;
-        struct ndfc_nand_mtd *nandmtd;
-
-        if (nc->chip_offset >= NDFC_MAX_BANKS || nc->nr_chips > NDFC_MAX_BANKS)
-                return -EINVAL;
-
-        /* Set the bank settings */
-        __raw_writel(settings->bank_settings,
-                     ndfc->ndfcbase + NDFC_BCFG0 + (nc->chip_offset << 2));
 
-        nandmtd = &ndfc_mtd[pdev->id];
-        if (nandmtd->pl_chip)
-                return -EBUSY;
+        ndfc->mtd.priv = chip;
+        ndfc->mtd.owner = THIS_MODULE;
 
-        nandmtd->pl_chip = nc;
-        ndfc_chip_init(nandmtd);
-
-        /* Scan for chips */
-        if (nand_scan(&nandmtd->mtd, nc->nr_chips)) {
-                nandmtd->pl_chip = NULL;
+        flash_np = of_get_next_child(node, NULL);
+        if (!flash_np)
                 return -ENODEV;
+
+        ndfc->mtd.name = kasprintf(GFP_KERNEL, "%s.%s",
+                                   ndfc->ofdev->dev.bus_id, flash_np->name);
+        if (!ndfc->mtd.name) {
+                ret = -ENOMEM;
+                goto err;
         }
 
-#ifdef CONFIG_MTD_PARTITIONS
-        printk("Number of partitions %d\n", nc->nr_partitions);
-        if (nc->nr_partitions) {
-                /* Add the full device, so complete dumps can be made */
-                add_mtd_device(&nandmtd->mtd);
-                add_mtd_partitions(&nandmtd->mtd, nc->partitions,
-                                   nc->nr_partitions);
+        ret = nand_scan(&ndfc->mtd, 1);
+        if (ret)
+                goto err;
 
-        } else
-#else
-                add_mtd_device(&nandmtd->mtd);
+#ifdef CONFIG_MTD_PARTITIONS
+        ret = parse_mtd_partitions(&ndfc->mtd, part_types, &ndfc->parts, 0);
+        if (ret < 0)
+                goto err;
+
+#ifdef CONFIG_MTD_OF_PARTS
+        if (ret == 0) {
+                ret = of_mtd_parse_partitions(&ndfc->ofdev->dev, flash_np,
+                                              &ndfc->parts);
+                if (ret < 0)
+                        goto err;
+        }
 #endif
 
-        atomic_inc(&ndfc->childs_active);
-        return 0;
-}
+        if (ret > 0)
+                ret = add_mtd_partitions(&ndfc->mtd, ndfc->parts, ret);
+        else
+#endif
+                ret = add_mtd_device(&ndfc->mtd);
 
-static int ndfc_chip_remove(struct platform_device *pdev)
-{
-        return 0;
+err:
+        of_node_put(flash_np);
+        if (ret)
+                kfree(ndfc->mtd.name);
+        return ret;
 }
 
-static int ndfc_nand_probe(struct platform_device *pdev)
+static int __devinit ndfc_probe(struct of_device *ofdev,
+                                const struct of_device_id *match)
 {
-        struct platform_nand_ctrl *nc = pdev->dev.platform_data;
-        struct ndfc_controller_settings *settings = nc->priv;
-        struct resource *res = pdev->resource;
         struct ndfc_controller *ndfc = &ndfc_ctrl;
-        unsigned long long phys = settings->ndfc_erpn | res->start;
+        const u32 *reg;
+        u32 ccr;
+        int err, len;
 
-#ifndef CONFIG_PHYS_64BIT
-        ndfc->ndfcbase = ioremap((phys_addr_t)phys, res->end - res->start + 1);
-#else
-        ndfc->ndfcbase = ioremap64(phys, res->end - res->start + 1);
-#endif
+        spin_lock_init(&ndfc->ndfc_control.lock);
+        init_waitqueue_head(&ndfc->ndfc_control.wq);
+        ndfc->ofdev = ofdev;
+        dev_set_drvdata(&ofdev->dev, ndfc);
+
+        /* Read the reg property to get the chip select */
+        reg = of_get_property(ofdev->node, "reg", &len);
+        if (reg == NULL || len != 12) {
+                dev_err(&ofdev->dev, "unable read reg property (%d)\n", len);
+                return -ENOENT;
+        }
+        ndfc->chip_select = reg[0];
+
+        ndfc->ndfcbase = of_iomap(ofdev->node, 0);
         if (!ndfc->ndfcbase) {
-                printk(KERN_ERR "NDFC: ioremap failed\n");
+                dev_err(&ofdev->dev, "failed to get memory\n");
                 return -EIO;
         }
 
-        __raw_writel(settings->ccr_settings, ndfc->ndfcbase + NDFC_CCR);
+        ccr = NDFC_CCR_BS(ndfc->chip_select);
 
-        spin_lock_init(&ndfc->ndfc_control.lock);
-        init_waitqueue_head(&ndfc->ndfc_control.wq);
+        /* It is ok if ccr does not exist - just default to 0 */
+        reg = of_get_property(ofdev->node, "ccr", NULL);
+        if (reg)
+                ccr |= *reg;
 
-        platform_set_drvdata(pdev, ndfc);
+        out_be32(ndfc->ndfcbase + NDFC_CCR, ccr);
 
-        printk("NDFC NAND Driver initialized. Chip-Rev: 0x%08x\n",
-               __raw_readl(ndfc->ndfcbase + NDFC_REVID));
+        /* Set the bank settings if given */
+        reg = of_get_property(ofdev->node, "bank-settings", NULL);
+        if (reg) {
+                int offset = NDFC_BCFG0 + (ndfc->chip_select << 2);
+                out_be32(ndfc->ndfcbase + offset, *reg);
+        }
+
+        err = ndfc_chip_init(ndfc, ofdev->node);
+        if (err) {
+                iounmap(ndfc->ndfcbase);
+                return err;
+        }
 
         return 0;
 }
 
-static int ndfc_nand_remove(struct platform_device *pdev)
+static int __devexit ndfc_remove(struct of_device *ofdev)
 {
-        struct ndfc_controller *ndfc = platform_get_drvdata(pdev);
+        struct ndfc_controller *ndfc = dev_get_drvdata(&ofdev->dev);
 
-        if (atomic_read(&ndfc->childs_active))
-                return -EBUSY;
+        nand_release(&ndfc->mtd);
 
-        if (ndfc) {
-                platform_set_drvdata(pdev, NULL);
-                iounmap(ndfc_ctrl.ndfcbase);
-                ndfc_ctrl.ndfcbase = NULL;
-        }
         return 0;
 }
 
-/* driver device registration */
-
-static struct platform_driver ndfc_chip_driver = {
-        .probe          = ndfc_chip_probe,
-        .remove         = ndfc_chip_remove,
-        .driver         = {
-                .name   = "ndfc-chip",
-                .owner  = THIS_MODULE,
-        },
+static const struct of_device_id ndfc_match[] = {
+        { .compatible = "ibm,ndfc", },
+        {}
 };
+MODULE_DEVICE_TABLE(of, ndfc_match);
 
-static struct platform_driver ndfc_nand_driver = {
-        .probe          = ndfc_nand_probe,
-        .remove         = ndfc_nand_remove,
-        .driver         = {
-                .name   = "ndfc-nand",
-                .owner  = THIS_MODULE,
+static struct of_platform_driver ndfc_driver = {
+        .driver = {
+                .name   = "ndfc",
         },
+        .match_table = ndfc_match,
+        .probe = ndfc_probe,
+        .remove = __devexit_p(ndfc_remove),
 };
 
 static int __init ndfc_nand_init(void)
 {
-        int ret;
-
-        spin_lock_init(&ndfc_ctrl.ndfc_control.lock);
-        init_waitqueue_head(&ndfc_ctrl.ndfc_control.wq);
-
-        ret = platform_driver_register(&ndfc_nand_driver);
-        if (!ret)
-                ret = platform_driver_register(&ndfc_chip_driver);
-        return ret;
+        return of_register_platform_driver(&ndfc_driver);
 }
 
 static void __exit ndfc_nand_exit(void)
 {
-        platform_driver_unregister(&ndfc_chip_driver);
-        platform_driver_unregister(&ndfc_nand_driver);
+        of_unregister_platform_driver(&ndfc_driver);
 }
 
 module_init(ndfc_nand_init);
@@ -316,6 +315,4 @@ module_exit(ndfc_nand_exit);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>");
-MODULE_DESCRIPTION("Platform driver for NDFC");
-MODULE_ALIAS("platform:ndfc-chip");
-MODULE_ALIAS("platform:ndfc-nand");
+MODULE_DESCRIPTION("OF Platform driver for NDFC");
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index fc4144495610..cc55cbc2b308 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -298,7 +298,7 @@ static struct pxa3xx_nand_flash *builtin_flash_types[] = {
 #define NDTR1_tAR(c)    (min((c), 15) << 0)
 
 /* convert nano-seconds to nand flash controller clock cycles */
-#define ns2cycle(ns, clk)       (int)(((ns) * (clk / 1000000) / 1000) + 1)
+#define ns2cycle(ns, clk)       (int)(((ns) * (clk / 1000000) / 1000) - 1)
 
 static void pxa3xx_nand_set_timing(struct pxa3xx_nand_info *info,
                                    const struct pxa3xx_nand_timing *t)
@@ -368,14 +368,14 @@ static int prepare_read_prog_cmd(struct pxa3xx_nand_info *info,
                 /* large block, 2 cycles for column address
                  * row address starts from 3rd cycle
                  */
-                info->ndcb1 |= (page_addr << 16) | (column & 0xffff);
+                info->ndcb1 |= page_addr << 16;
                 if (info->row_addr_cycles == 3)
                         info->ndcb2 = (page_addr >> 16) & 0xff;
         } else
                 /* small block, 1 cycles for column address
                  * row address starts from 2nd cycle
                  */
-                info->ndcb1 = (page_addr << 8) | (column & 0xff);
+                info->ndcb1 = page_addr << 8;
 
         if (cmd == cmdset->program)
                 info->ndcb0 |= NDCB0_CMD_TYPE(1) | NDCB0_AUTO_RS;
diff --git a/drivers/mtd/nand/sharpsl.c b/drivers/mtd/nand/sharpsl.c
index 30a518e211bd..54ec7542a7b7 100644
--- a/drivers/mtd/nand/sharpsl.c
+++ b/drivers/mtd/nand/sharpsl.c
@@ -2,6 +2,7 @@
  * drivers/mtd/nand/sharpsl.c
  *
  *  Copyright (C) 2004 Richard Purdie
+ *  Copyright (C) 2008 Dmitry Baryshkov
  *
  *  Based on Sharp's NAND driver sharp_sl.c
  *
@@ -19,22 +20,31 @@
 #include <linux/mtd/nand.h>
 #include <linux/mtd/nand_ecc.h>
 #include <linux/mtd/partitions.h>
+#include <linux/mtd/sharpsl.h>
 #include <linux/interrupt.h>
+#include <linux/platform_device.h>
+
 #include <asm/io.h>
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
 
-static void __iomem *sharpsl_io_base;
-static int sharpsl_phys_base = 0x0C000000;
+struct sharpsl_nand {
+        struct mtd_info         mtd;
+        struct nand_chip        chip;
+
+        void __iomem            *io;
+};
+
+#define mtd_to_sharpsl(_mtd)    container_of(_mtd, struct sharpsl_nand, mtd)
 
 /* register offset */
-#define ECCLPLB         sharpsl_io_base+0x00    /* line parity 7 - 0 bit */
-#define ECCLPUB         sharpsl_io_base+0x04    /* line parity 15 - 8 bit */
-#define ECCCP           sharpsl_io_base+0x08    /* column parity 5 - 0 bit */
-#define ECCCNTR         sharpsl_io_base+0x0C    /* ECC byte counter */
-#define ECCCLRR         sharpsl_io_base+0x10    /* cleare ECC */
-#define FLASHIO         sharpsl_io_base+0x14    /* Flash I/O */
-#define FLASHCTL        sharpsl_io_base+0x18    /* Flash Control */
+#define ECCLPLB         0x00    /* line parity 7 - 0 bit */
+#define ECCLPUB         0x04    /* line parity 15 - 8 bit */
+#define ECCCP           0x08    /* column parity 5 - 0 bit */
+#define ECCCNTR         0x0C    /* ECC byte counter */
+#define ECCCLRR         0x10    /* cleare ECC */
+#define FLASHIO         0x14    /* Flash I/O */
+#define FLASHCTL        0x18    /* Flash Control */
 
 /* Flash control bit */
 #define FLRYBY          (1 << 5)
@@ -45,35 +55,6 @@ static int sharpsl_phys_base = 0x0C000000;
 #define FLCE0           (1 << 0)
 
 /*
- * MTD structure for SharpSL
- */
-static struct mtd_info *sharpsl_mtd = NULL;
-
-/*
- * Define partitions for flash device
- */
-#define DEFAULT_NUM_PARTITIONS 3
-
-static int nr_partitions;
-static struct mtd_partition sharpsl_nand_default_partition_info[] = {
-        {
-         .name = "System Area",
-         .offset = 0,
-         .size = 7 * 1024 * 1024,
-         },
-        {
-         .name = "Root Filesystem",
-         .offset = 7 * 1024 * 1024,
-         .size = 30 * 1024 * 1024,
-         },
-        {
-         .name = "Home Filesystem",
-         .offset = MTDPART_OFS_APPEND,
-         .size = MTDPART_SIZ_FULL,
-         },
-};
-
-/*
  *      hardware specific access to control-lines
  *      ctrl:
  *      NAND_CNE: bit 0 -> ! bit 0 & 4
@@ -84,6 +65,7 @@ static struct mtd_partition sharpsl_nand_default_partition_info[] = {
 static void sharpsl_nand_hwcontrol(struct mtd_info *mtd, int cmd,
                                    unsigned int ctrl)
 {
+        struct sharpsl_nand *sharpsl = mtd_to_sharpsl(mtd);
         struct nand_chip *chip = mtd->priv;
 
         if (ctrl & NAND_CTRL_CHANGE) {
@@ -93,103 +75,97 @@ static void sharpsl_nand_hwcontrol(struct mtd_info *mtd, int cmd,
 
                 bits ^= 0x11;
 
-                writeb((readb(FLASHCTL) & ~0x17) | bits, FLASHCTL);
+                writeb((readb(sharpsl->io + FLASHCTL) & ~0x17) | bits, sharpsl->io + FLASHCTL);
         }
 
         if (cmd != NAND_CMD_NONE)
                 writeb(cmd, chip->IO_ADDR_W);
 }
 
-static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
-
-static struct nand_bbt_descr sharpsl_bbt = {
-        .options = 0,
-        .offs = 4,
-        .len = 2,
-        .pattern = scan_ff_pattern
-};
-
-static struct nand_bbt_descr sharpsl_akita_bbt = {
-        .options = 0,
-        .offs = 4,
-        .len = 1,
-        .pattern = scan_ff_pattern
-};
-
-static struct nand_ecclayout akita_oobinfo = {
-        .eccbytes = 24,
-        .eccpos = {
-                   0x5, 0x1, 0x2, 0x3, 0x6, 0x7, 0x15, 0x11,
-                   0x12, 0x13, 0x16, 0x17, 0x25, 0x21, 0x22, 0x23,
-                   0x26, 0x27, 0x35, 0x31, 0x32, 0x33, 0x36, 0x37},
-        .oobfree = {{0x08, 0x09}}
-};
-
 static int sharpsl_nand_dev_ready(struct mtd_info *mtd)
 {
-        return !((readb(FLASHCTL) & FLRYBY) == 0);
+        struct sharpsl_nand *sharpsl = mtd_to_sharpsl(mtd);
+        return !((readb(sharpsl->io + FLASHCTL) & FLRYBY) == 0);
 }
 
 static void sharpsl_nand_enable_hwecc(struct mtd_info *mtd, int mode)
 {
-        writeb(0, ECCCLRR);
+        struct sharpsl_nand *sharpsl = mtd_to_sharpsl(mtd);
+        writeb(0, sharpsl->io + ECCCLRR);
 }
 
 static int sharpsl_nand_calculate_ecc(struct mtd_info *mtd, const u_char * dat, u_char * ecc_code)
 {
-        ecc_code[0] = ~readb(ECCLPUB);
-        ecc_code[1] = ~readb(ECCLPLB);
-        ecc_code[2] = (~readb(ECCCP) << 2) | 0x03;
-        return readb(ECCCNTR) != 0;
+        struct sharpsl_nand *sharpsl = mtd_to_sharpsl(mtd);
+        ecc_code[0] = ~readb(sharpsl->io + ECCLPUB);
+        ecc_code[1] = ~readb(sharpsl->io + ECCLPLB);
+        ecc_code[2] = (~readb(sharpsl->io + ECCCP) << 2) | 0x03;
+        return readb(sharpsl->io + ECCCNTR) != 0;
 }
 
 #ifdef CONFIG_MTD_PARTITIONS
-const char *part_probes[] = { "cmdlinepart", NULL };
+static const char *part_probes[] = { "cmdlinepart", NULL };
 #endif
 
 /*
  * Main initialization routine
  */
-static int __init sharpsl_nand_init(void)
+static int __devinit sharpsl_nand_probe(struct platform_device *pdev)
 {
         struct nand_chip *this;
+#ifdef CONFIG_MTD_PARTITIONS
         struct mtd_partition *sharpsl_partition_info;
+        int nr_partitions;
+#endif
+        struct resource *r;
         int err = 0;
+        struct sharpsl_nand *sharpsl;
+        struct sharpsl_nand_platform_data *data = pdev->dev.platform_data;
+
+        if (!data) {
+                dev_err(&pdev->dev, "no platform data!\n");
+                return -EINVAL;
+        }
 
         /* Allocate memory for MTD device structure and private data */
-        sharpsl_mtd = kmalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip), GFP_KERNEL);
-        if (!sharpsl_mtd) {
+        sharpsl = kzalloc(sizeof(struct sharpsl_nand), GFP_KERNEL);
+        if (!sharpsl) {
                 printk("Unable to allocate SharpSL NAND MTD device structure.\n");
                 return -ENOMEM;
         }
 
+        r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!r) {
+                dev_err(&pdev->dev, "no io memory resource defined!\n");
+                err = -ENODEV;
+                goto err_get_res;
+        }
+
         /* map physical address */
-        sharpsl_io_base = ioremap(sharpsl_phys_base, 0x1000);
-        if (!sharpsl_io_base) {
+        sharpsl->io = ioremap(r->start, resource_size(r));
+        if (!sharpsl->io) {
                 printk("ioremap to access Sharp SL NAND chip failed\n");
-                kfree(sharpsl_mtd);
-                return -EIO;
+                err = -EIO;
+                goto err_ioremap;
         }
 
         /* Get pointer to private data */
-        this = (struct nand_chip *)(&sharpsl_mtd[1]);
-
-        /* Initialize structures */
-        memset(sharpsl_mtd, 0, sizeof(struct mtd_info));
-        memset(this, 0, sizeof(struct nand_chip));
+        this = (struct nand_chip *)(&sharpsl->chip);
 
         /* Link the private data with the MTD structure */
-        sharpsl_mtd->priv = this;
-        sharpsl_mtd->owner = THIS_MODULE;
+        sharpsl->mtd.priv = this;
+        sharpsl->mtd.owner = THIS_MODULE;
+
+        platform_set_drvdata(pdev, sharpsl);
 
         /*
          * PXA initialize
          */
-        writeb(readb(FLASHCTL) | FLWP, FLASHCTL);
+        writeb(readb(sharpsl->io + FLASHCTL) | FLWP, sharpsl->io + FLASHCTL);
 
         /* Set address of NAND IO lines */
-        this->IO_ADDR_R = FLASHIO;
-        this->IO_ADDR_W = FLASHIO;
+        this->IO_ADDR_R = sharpsl->io + FLASHIO;
+        this->IO_ADDR_W = sharpsl->io + FLASHIO;
         /* Set address of hardware control function */
         this->cmd_ctrl = sharpsl_nand_hwcontrol;
         this->dev_ready = sharpsl_nand_dev_ready;
@@ -199,68 +175,89 @@ static int __init sharpsl_nand_init(void)
         this->ecc.mode = NAND_ECC_HW;
         this->ecc.size = 256;
         this->ecc.bytes = 3;
-        this->badblock_pattern = &sharpsl_bbt;
-        if (machine_is_akita() || machine_is_borzoi()) {
-                this->badblock_pattern = &sharpsl_akita_bbt;
-                this->ecc.layout = &akita_oobinfo;
-        }
+        this->badblock_pattern = data->badblock_pattern;
+        this->ecc.layout = data->ecc_layout;
         this->ecc.hwctl = sharpsl_nand_enable_hwecc;
         this->ecc.calculate = sharpsl_nand_calculate_ecc;
         this->ecc.correct = nand_correct_data;
 
         /* Scan to find existence of the device */
-        err = nand_scan(sharpsl_mtd, 1);
-        if (err) {
-                iounmap(sharpsl_io_base);
-                kfree(sharpsl_mtd);
-                return err;
-        }
+        err = nand_scan(&sharpsl->mtd, 1);
+        if (err)
+                goto err_scan;
 
         /* Register the partitions */
-        sharpsl_mtd->name = "sharpsl-nand";
-        nr_partitions = parse_mtd_partitions(sharpsl_mtd, part_probes, &sharpsl_partition_info, 0);
-
+        sharpsl->mtd.name = "sharpsl-nand";
+#ifdef CONFIG_MTD_PARTITIONS
+        nr_partitions = parse_mtd_partitions(&sharpsl->mtd, part_probes, &sharpsl_partition_info, 0);
         if (nr_partitions <= 0) {
-                nr_partitions = DEFAULT_NUM_PARTITIONS;
-                sharpsl_partition_info = sharpsl_nand_default_partition_info;
-                if (machine_is_poodle()) {
-                        sharpsl_partition_info[1].size = 22 * 1024 * 1024;
-                } else if (machine_is_corgi() || machine_is_shepherd()) {
-                        sharpsl_partition_info[1].size = 25 * 1024 * 1024;
-                } else if (machine_is_husky()) {
-                        sharpsl_partition_info[1].size = 53 * 1024 * 1024;
-                } else if (machine_is_spitz()) {
-                        sharpsl_partition_info[1].size = 5 * 1024 * 1024;
-                } else if (machine_is_akita()) {
-                        sharpsl_partition_info[1].size = 58 * 1024 * 1024;
-                } else if (machine_is_borzoi()) {
-                        sharpsl_partition_info[1].size = 32 * 1024 * 1024;
-                }
+                nr_partitions = data->nr_partitions;
+                sharpsl_partition_info = data->partitions;
         }
 
-        add_mtd_partitions(sharpsl_mtd, sharpsl_partition_info, nr_partitions);
+        if (nr_partitions > 0)
+                err = add_mtd_partitions(&sharpsl->mtd, sharpsl_partition_info, nr_partitions);
+        else
+#endif
+        err = add_mtd_device(&sharpsl->mtd);
+        if (err)
+                goto err_add;
 
         /* Return happy */
         return 0;
-}
 
-module_init(sharpsl_nand_init);
+err_add:
+        nand_release(&sharpsl->mtd);
+
+err_scan:
+        platform_set_drvdata(pdev, NULL);
+        iounmap(sharpsl->io);
+err_ioremap:
+err_get_res:
+        kfree(sharpsl);
+        return err;
+}
 
 /*
  * Clean up routine
  */
-static void __exit sharpsl_nand_cleanup(void)
+static int __devexit sharpsl_nand_remove(struct platform_device *pdev)
 {
+        struct sharpsl_nand *sharpsl = platform_get_drvdata(pdev);
+
         /* Release resources, unregister device */
-        nand_release(sharpsl_mtd);
+        nand_release(&sharpsl->mtd);
 
-        iounmap(sharpsl_io_base);
+        platform_set_drvdata(pdev, NULL);
+
+        iounmap(sharpsl->io);
 
         /* Free the MTD device structure */
-        kfree(sharpsl_mtd);
+        kfree(sharpsl);
+
+        return 0;
+}
+
+static struct platform_driver sharpsl_nand_driver = {
+        .driver = {
+                .name   = "sharpsl-nand",
+                .owner  = THIS_MODULE,
+        },
+        .probe          = sharpsl_nand_probe,
+        .remove         = __devexit_p(sharpsl_nand_remove),
+};
+
+static int __init sharpsl_nand_init(void)
+{
+        return platform_driver_register(&sharpsl_nand_driver);
 }
+module_init(sharpsl_nand_init);
 
-module_exit(sharpsl_nand_cleanup);
+static void __exit sharpsl_nand_exit(void)
+{
+        platform_driver_unregister(&sharpsl_nand_driver);
+}
+module_exit(sharpsl_nand_exit);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c
index 320b929abe79..d1c4546513f7 100644
--- a/drivers/mtd/nftlcore.c
+++ b/drivers/mtd/nftlcore.c
@@ -39,7 +39,7 @@ static void nftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
         struct NFTLrecord *nftl;
         unsigned long temp;
 
-        if (mtd->type != MTD_NANDFLASH)
+        if (mtd->type != MTD_NANDFLASH || mtd->size > UINT_MAX)
                 return;
         /* OK, this is moderately ugly.  But probably safe.  Alternatives? */
         if (memcmp(mtd->name, "DiskOnChip", 10))
diff --git a/drivers/mtd/nftlmount.c b/drivers/mtd/nftlmount.c
index ccc4f209fbb5..8b22b1836e9f 100644
--- a/drivers/mtd/nftlmount.c
+++ b/drivers/mtd/nftlmount.c
@@ -51,7 +51,7 @@ static int find_boot_record(struct NFTLrecord *nftl)
            the mtd device accordingly.  We could even get rid of
            nftl->EraseSize if there were any point in doing so. */
         nftl->EraseSize = nftl->mbd.mtd->erasesize;
-        nftl->nb_blocks = nftl->mbd.mtd->size / nftl->EraseSize;
+        nftl->nb_blocks = (u32)nftl->mbd.mtd->size / nftl->EraseSize;
 
         nftl->MediaUnit = BLOCK_NIL;
         nftl->SpareMediaUnit = BLOCK_NIL;
@@ -168,7 +168,7 @@ device is already correct.
                         printk(KERN_NOTICE "WARNING: Support for NFTL with UnitSizeFactor 0x%02x is experimental\n",
                                mh->UnitSizeFactor);
                         nftl->EraseSize = nftl->mbd.mtd->erasesize << (0xff - mh->UnitSizeFactor);
-                        nftl->nb_blocks = nftl->mbd.mtd->size / nftl->EraseSize;
+                        nftl->nb_blocks = (u32)nftl->mbd.mtd->size / nftl->EraseSize;
                 }
 #endif
                 nftl->nb_boot_blocks = le16_to_cpu(mh->FirstPhysicalEUN);
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index 90ed319f26e6..529af271db17 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -1772,7 +1772,7 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
         int len;
         int ret = 0;
 
-        DEBUG(MTD_DEBUG_LEVEL3, "onenand_erase: start = 0x%08x, len = %i\n", (unsigned int) instr->addr, (unsigned int) instr->len);
+        DEBUG(MTD_DEBUG_LEVEL3, "onenand_erase: start = 0x%012llx, len = %llu\n", (unsigned long long) instr->addr, (unsigned long long) instr->len);
 
         block_size = (1 << this->erase_shift);
 
@@ -1810,7 +1810,7 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
 
                 /* Check if we have a bad block, we do not erase bad blocks */
                 if (onenand_block_isbad_nolock(mtd, addr, 0)) {
-                        printk (KERN_WARNING "onenand_erase: attempt to erase a bad block at addr 0x%08x\n", (unsigned int) addr);
+                        printk (KERN_WARNING "onenand_erase: attempt to erase a bad block at addr 0x%012llx\n", (unsigned long long) addr);
                         instr->state = MTD_ERASE_FAILED;
                         goto erase_exit;
                 }
@@ -2029,7 +2029,7 @@ static int onenand_do_lock_cmd(struct mtd_info *mtd, loff_t ofs, size_t len, int
  *
  * Lock one or more blocks
  */
-static int onenand_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int onenand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         int ret;
 
@@ -2047,7 +2047,7 @@ static int onenand_lock(struct mtd_info *mtd, loff_t ofs, size_t len)
  *
  * Unlock one or more blocks
  */
-static int onenand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+static int onenand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
 {
         int ret;
 
diff --git a/drivers/mtd/rfd_ftl.c b/drivers/mtd/rfd_ftl.c
index e538c0a72abb..d2aa9c46530f 100644
--- a/drivers/mtd/rfd_ftl.c
+++ b/drivers/mtd/rfd_ftl.c
@@ -21,8 +21,6 @@
 
 #include <asm/types.h>
 
-#define const_cpu_to_le16       __constant_cpu_to_le16
-
 static int block_size = 0;
 module_param(block_size, int, 0);
 MODULE_PARM_DESC(block_size, "Block size to use by RFD, defaults to erase unit size");
@@ -156,7 +154,7 @@ static int scan_header(struct partition *part)
         size_t retlen;
 
         sectors_per_block = part->block_size / SECTOR_SIZE;
-        part->total_blocks = part->mbd.mtd->size / part->block_size;
+        part->total_blocks = (u32)part->mbd.mtd->size / part->block_size;
 
         if (part->total_blocks < 2)
                 return -ENOENT;
@@ -276,16 +274,17 @@ static void erase_callback(struct erase_info *erase)
 
         part = (struct partition*)erase->priv;
 
-        i = erase->addr / part->block_size;
-        if (i >= part->total_blocks || part->blocks[i].offset != erase->addr) {
-                printk(KERN_ERR PREFIX "erase callback for unknown offset %x "
-                                "on '%s'\n", erase->addr, part->mbd.mtd->name);
+        i = (u32)erase->addr / part->block_size;
+        if (i >= part->total_blocks || part->blocks[i].offset != erase->addr ||
+            erase->addr > UINT_MAX) {
+                printk(KERN_ERR PREFIX "erase callback for unknown offset %llx "
+                                "on '%s'\n", (unsigned long long)erase->addr, part->mbd.mtd->name);
                 return;
         }
 
         if (erase->state != MTD_ERASE_DONE) {
-                printk(KERN_WARNING PREFIX "erase failed at 0x%x on '%s', "
-                                "state %d\n", erase->addr,
+                printk(KERN_WARNING PREFIX "erase failed at 0x%llx on '%s', "
+                                "state %d\n", (unsigned long long)erase->addr,
                                 part->mbd.mtd->name, erase->state);
 
                 part->blocks[i].state = BLOCK_FAILED;
@@ -297,7 +296,7 @@ static void erase_callback(struct erase_info *erase)
                 return;
         }
 
-        magic = const_cpu_to_le16(RFD_MAGIC);
+        magic = cpu_to_le16(RFD_MAGIC);
 
         part->blocks[i].state = BLOCK_ERASED;
         part->blocks[i].free_sectors = part->data_sectors_per_block;
@@ -345,9 +344,9 @@ static int erase_block(struct partition *part, int block)
         rc = part->mbd.mtd->erase(part->mbd.mtd, erase);
 
         if (rc) {
-                printk(KERN_ERR PREFIX "erase of region %x,%x on '%s' "
-                                "failed\n", erase->addr, erase->len,
-                                part->mbd.mtd->name);
+                printk(KERN_ERR PREFIX "erase of region %llx,%llx on '%s' "
+                                "failed\n", (unsigned long long)erase->addr,
+                                (unsigned long long)erase->len, part->mbd.mtd->name);
                 kfree(erase);
         }
 
@@ -587,7 +586,7 @@ static int mark_sector_deleted(struct partition *part, u_long old_addr)
         int block, offset, rc;
         u_long addr;
         size_t retlen;
-        u16 del = const_cpu_to_le16(SECTOR_DELETED);
+        u16 del = cpu_to_le16(SECTOR_DELETED);
 
         block = old_addr / part->block_size;
         offset = (old_addr % part->block_size) / SECTOR_SIZE -
@@ -763,7 +762,7 @@ static void rfd_ftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
 {
         struct partition *part;
 
-        if (mtd->type != MTD_NORFLASH)
+        if (mtd->type != MTD_NORFLASH || mtd->size > UINT_MAX)
                 return;
 
         part = kzalloc(sizeof(struct partition), GFP_KERNEL);
diff --git a/drivers/mtd/ssfdc.c b/drivers/mtd/ssfdc.c
index 33a5d6ed6f18..3f67e00d98e0 100644
--- a/drivers/mtd/ssfdc.c
+++ b/drivers/mtd/ssfdc.c
@@ -294,7 +294,8 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
         int cis_sector;
 
         /* Check for small page NAND flash */
-        if (mtd->type != MTD_NANDFLASH || mtd->oobsize != OOB_SIZE)
+        if (mtd->type != MTD_NANDFLASH || mtd->oobsize != OOB_SIZE ||
+            mtd->size > UINT_MAX)
                 return;
 
         /* Check for SSDFC format by reading CIS/IDI sector */
@@ -316,7 +317,7 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
 
         ssfdc->cis_block = cis_sector / (mtd->erasesize >> SECTOR_SHIFT);
         ssfdc->erase_size = mtd->erasesize;
-        ssfdc->map_len = mtd->size / mtd->erasesize;
+        ssfdc->map_len = (u32)mtd->size / mtd->erasesize;
 
         DEBUG(MTD_DEBUG_LEVEL1,
                 "SSFDC_RO: cis_block=%d,erase_size=%d,map_len=%d,n_zones=%d\n",
@@ -327,7 +328,7 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
         ssfdc->heads = 16;
         ssfdc->sectors = 32;
         get_chs(mtd->size, NULL, &ssfdc->heads, &ssfdc->sectors);
-        ssfdc->cylinders = (unsigned short)((mtd->size >> SECTOR_SHIFT) /
+        ssfdc->cylinders = (unsigned short)(((u32)mtd->size >> SECTOR_SHIFT) /
                         ((long)ssfdc->sectors * (long)ssfdc->heads));
 
         DEBUG(MTD_DEBUG_LEVEL1, "SSFDC_RO: using C:%d H:%d S:%d == %ld sects\n",
diff --git a/drivers/mtd/tests/Makefile b/drivers/mtd/tests/Makefile
new file mode 100644
index 000000000000..c1d501335006
--- /dev/null
+++ b/drivers/mtd/tests/Makefile
@@ -0,0 +1,7 @@
+obj-$(CONFIG_MTD_TESTS) += mtd_oobtest.o
+obj-$(CONFIG_MTD_TESTS) += mtd_pagetest.o
+obj-$(CONFIG_MTD_TESTS) += mtd_readtest.o
+obj-$(CONFIG_MTD_TESTS) += mtd_speedtest.o
+obj-$(CONFIG_MTD_TESTS) += mtd_stresstest.o
+obj-$(CONFIG_MTD_TESTS) += mtd_subpagetest.o
+obj-$(CONFIG_MTD_TESTS) += mtd_torturetest.o
diff --git a/drivers/mtd/tests/mtd_oobtest.c b/drivers/mtd/tests/mtd_oobtest.c
new file mode 100644
index 000000000000..afbc3f8126db
--- /dev/null
+++ b/drivers/mtd/tests/mtd_oobtest.c
@@ -0,0 +1,742 @@
+/*
+ * Copyright (C) 2006-2008 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Test OOB read and write on MTD device.
+ *
+ * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
+ */
+
+#include <asm/div64.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+
+#define PRINT_PREF KERN_INFO "mtd_oobtest: "
+
+static int dev;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static struct mtd_info *mtd;
+static unsigned char *readbuf;
+static unsigned char *writebuf;
+static unsigned char *bbt;
+
+static int ebcnt;
+static int pgcnt;
+static int errcnt;
+static int use_offset;
+static int use_len;
+static int use_len_max;
+static int vary_offset;
+static unsigned long next = 1;
+
+static inline unsigned int simple_rand(void)
+{
+        next = next * 1103515245 + 12345;
+        return (unsigned int)((next / 65536) % 32768);
+}
+
+static inline void simple_srand(unsigned long seed)
+{
+        next = seed;
+}
+
+static void set_random_data(unsigned char *buf, size_t len)
+{
+        size_t i;
+
+        for (i = 0; i < len; ++i)
+                buf[i] = simple_rand();
+}
+
+static int erase_eraseblock(int ebnum)
+{
+        int err;
+        struct erase_info ei;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        memset(&ei, 0, sizeof(struct erase_info));
+        ei.mtd  = mtd;
+        ei.addr = addr;
+        ei.len  = mtd->erasesize;
+
+        err = mtd->erase(mtd, &ei);
+        if (err) {
+                printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum);
+                return err;
+        }
+
+        if (ei.state == MTD_ERASE_FAILED) {
+                printk(PRINT_PREF "some erase error occurred at EB %d\n",
+                       ebnum);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int erase_whole_device(void)
+{
+        int err;
+        unsigned int i;
+
+        printk(PRINT_PREF "erasing whole device\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = erase_eraseblock(i);
+                if (err)
+                        return err;
+                cond_resched();
+        }
+        printk(PRINT_PREF "erased %u eraseblocks\n", i);
+        return 0;
+}
+
+static void do_vary_offset(void)
+{
+        use_len -= 1;
+        if (use_len < 1) {
+                use_offset += 1;
+                if (use_offset >= use_len_max)
+                        use_offset = 0;
+                use_len = use_len_max - use_offset;
+        }
+}
+
+static int write_eraseblock(int ebnum)
+{
+        int i;
+        struct mtd_oob_ops ops;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
+                set_random_data(writebuf, use_len);
+                ops.mode      = MTD_OOB_AUTO;
+                ops.len       = 0;
+                ops.retlen    = 0;
+                ops.ooblen    = use_len;
+                ops.oobretlen = 0;
+                ops.ooboffs   = use_offset;
+                ops.datbuf    = 0;
+                ops.oobbuf    = writebuf;
+                err = mtd->write_oob(mtd, addr, &ops);
+                if (err || ops.oobretlen != use_len) {
+                        printk(PRINT_PREF "error: writeoob failed at %#llx\n",
+                               (long long)addr);
+                        printk(PRINT_PREF "error: use_len %d, use_offset %d\n",
+                               use_len, use_offset);
+                        errcnt += 1;
+                        return err ? err : -1;
+                }
+                if (vary_offset)
+                        do_vary_offset();
+        }
+
+        return err;
+}
+
+static int write_whole_device(void)
+{
+        int err;
+        unsigned int i;
+
+        printk(PRINT_PREF "writing OOBs of whole device\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock(i);
+                if (err)
+                        return err;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "written up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "written %u eraseblocks\n", i);
+        return 0;
+}
+
+static int verify_eraseblock(int ebnum)
+{
+        int i;
+        struct mtd_oob_ops ops;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
+                set_random_data(writebuf, use_len);
+                ops.mode      = MTD_OOB_AUTO;
+                ops.len       = 0;
+                ops.retlen    = 0;
+                ops.ooblen    = use_len;
+                ops.oobretlen = 0;
+                ops.ooboffs   = use_offset;
+                ops.datbuf    = 0;
+                ops.oobbuf    = readbuf;
+                err = mtd->read_oob(mtd, addr, &ops);
+                if (err || ops.oobretlen != use_len) {
+                        printk(PRINT_PREF "error: readoob failed at %#llx\n",
+                               (long long)addr);
+                        errcnt += 1;
+                        return err ? err : -1;
+                }
+                if (memcmp(readbuf, writebuf, use_len)) {
+                        printk(PRINT_PREF "error: verify failed at %#llx\n",
+                               (long long)addr);
+                        errcnt += 1;
+                        if (errcnt > 1000) {
+                                printk(PRINT_PREF "error: too many errors\n");
+                                return -1;
+                        }
+                }
+                if (use_offset != 0 || use_len < mtd->ecclayout->oobavail) {
+                        int k;
+
+                        ops.mode      = MTD_OOB_AUTO;
+                        ops.len       = 0;
+                        ops.retlen    = 0;
+                        ops.ooblen    = mtd->ecclayout->oobavail;
+                        ops.oobretlen = 0;
+                        ops.ooboffs   = 0;
+                        ops.datbuf    = 0;
+                        ops.oobbuf    = readbuf;
+                        err = mtd->read_oob(mtd, addr, &ops);
+                        if (err || ops.oobretlen != mtd->ecclayout->oobavail) {
+                                printk(PRINT_PREF "error: readoob failed at "
+                                       "%#llx\n", (long long)addr);
+                                errcnt += 1;
+                                return err ? err : -1;
+                        }
+                        if (memcmp(readbuf + use_offset, writebuf, use_len)) {
+                                printk(PRINT_PREF "error: verify failed at "
+                                       "%#llx\n", (long long)addr);
+                                errcnt += 1;
+                                if (errcnt > 1000) {
+                                        printk(PRINT_PREF "error: too many "
+                                               "errors\n");
+                                        return -1;
+                                }
+                        }
+                        for (k = 0; k < use_offset; ++k)
+                                if (readbuf[k] != 0xff) {
+                                        printk(PRINT_PREF "error: verify 0xff "
+                                               "failed at %#llx\n",
+                                               (long long)addr);
+                                        errcnt += 1;
+                                        if (errcnt > 1000) {
+                                                printk(PRINT_PREF "error: too "
+                                                       "many errors\n");
+                                                return -1;
+                                        }
+                                }
+                        for (k = use_offset + use_len;
+                             k < mtd->ecclayout->oobavail; ++k)
+                                if (readbuf[k] != 0xff) {
+                                        printk(PRINT_PREF "error: verify 0xff "
+                                               "failed at %#llx\n",
+                                               (long long)addr);
+                                        errcnt += 1;
+                                        if (errcnt > 1000) {
+                                                printk(PRINT_PREF "error: too "
+                                                       "many errors\n");
+                                                return -1;
+                                        }
+                                }
+                }
+                if (vary_offset)
+                        do_vary_offset();
+        }
+        return err;
+}
+
+static int verify_eraseblock_in_one_go(int ebnum)
+{
+        struct mtd_oob_ops ops;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        size_t len = mtd->ecclayout->oobavail * pgcnt;
+
+        set_random_data(writebuf, len);
+        ops.mode      = MTD_OOB_AUTO;
+        ops.len       = 0;
+        ops.retlen    = 0;
+        ops.ooblen    = len;
+        ops.oobretlen = 0;
+        ops.ooboffs   = 0;
+        ops.datbuf    = 0;
+        ops.oobbuf    = readbuf;
+        err = mtd->read_oob(mtd, addr, &ops);
+        if (err || ops.oobretlen != len) {
+                printk(PRINT_PREF "error: readoob failed at %#llx\n",
+                       (long long)addr);
+                errcnt += 1;
+                return err ? err : -1;
+        }
+        if (memcmp(readbuf, writebuf, len)) {
+                printk(PRINT_PREF "error: verify failed at %#llx\n",
+                       (long long)addr);
+                errcnt += 1;
+                if (errcnt > 1000) {
+                        printk(PRINT_PREF "error: too many errors\n");
+                        return -1;
+                }
+        }
+
+        return err;
+}
+
+static int verify_all_eraseblocks(void)
+{
+        int err;
+        unsigned int i;
+
+        printk(PRINT_PREF "verifying all eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = verify_eraseblock(i);
+                if (err)
+                        return err;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "verified up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "verified %u eraseblocks\n", i);
+        return 0;
+}
+
+static int is_block_bad(int ebnum)
+{
+        int ret;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        ret = mtd->block_isbad(mtd, addr);
+        if (ret)
+                printk(PRINT_PREF "block %d is bad\n", ebnum);
+        return ret;
+}
+
+static int scan_for_bad_eraseblocks(void)
+{
+        int i, bad = 0;
+
+        bbt = kmalloc(ebcnt, GFP_KERNEL);
+        if (!bbt) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                return -ENOMEM;
+        }
+        memset(bbt, 0 , ebcnt);
+
+        printk(PRINT_PREF "scanning for bad eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                bbt[i] = is_block_bad(i) ? 1 : 0;
+                if (bbt[i])
+                        bad += 1;
+                cond_resched();
+        }
+        printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad);
+        return 0;
+}
+
+static int __init mtd_oobtest_init(void)
+{
+        int err = 0;
+        unsigned int i;
+        uint64_t tmp;
+        struct mtd_oob_ops ops;
+        loff_t addr = 0, addr0;
+
+        printk(KERN_INFO "\n");
+        printk(KERN_INFO "=================================================\n");
+        printk(PRINT_PREF "MTD device: %d\n", dev);
+
+        mtd = get_mtd_device(NULL, dev);
+        if (IS_ERR(mtd)) {
+                err = PTR_ERR(mtd);
+                printk(PRINT_PREF "error: cannot get MTD device\n");
+                return err;
+        }
+
+        if (mtd->type != MTD_NANDFLASH) {
+                printk(PRINT_PREF "this test requires NAND flash\n");
+                goto out;
+        }
+
+        tmp = mtd->size;
+        do_div(tmp, mtd->erasesize);
+        ebcnt = tmp;
+        pgcnt = mtd->erasesize / mtd->writesize;
+
+        printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
+               "page size %u, count of eraseblocks %u, pages per "
+               "eraseblock %u, OOB size %u\n",
+               (unsigned long long)mtd->size, mtd->erasesize,
+               mtd->writesize, ebcnt, pgcnt, mtd->oobsize);
+
+        err = -ENOMEM;
+        mtd->erasesize = mtd->erasesize;
+        readbuf = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!readbuf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+        writebuf = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!writebuf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+
+        err = scan_for_bad_eraseblocks();
+        if (err)
+                goto out;
+
+        use_offset = 0;
+        use_len = mtd->ecclayout->oobavail;
+        use_len_max = mtd->ecclayout->oobavail;
+        vary_offset = 0;
+
+        /* First test: write all OOB, read it back and verify */
+        printk(PRINT_PREF "test 1 of 5\n");
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        simple_srand(1);
+        err = write_whole_device();
+        if (err)
+                goto out;
+
+        simple_srand(1);
+        err = verify_all_eraseblocks();
+        if (err)
+                goto out;
+
+        /*
+         * Second test: write all OOB, a block at a time, read it back and
+         * verify.
+         */
+        printk(PRINT_PREF "test 2 of 5\n");
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        simple_srand(3);
+        err = write_whole_device();
+        if (err)
+                goto out;
+
+        /* Check all eraseblocks */
+        simple_srand(3);
+        printk(PRINT_PREF "verifying all eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = verify_eraseblock_in_one_go(i);
+                if (err)
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "verified up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "verified %u eraseblocks\n", i);
+
+        /*
+         * Third test: write OOB at varying offsets and lengths, read it back
+         * and verify.
+         */
+        printk(PRINT_PREF "test 3 of 5\n");
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        /* Write all eraseblocks */
+        use_offset = 0;
+        use_len = mtd->ecclayout->oobavail;
+        use_len_max = mtd->ecclayout->oobavail;
+        vary_offset = 1;
+        simple_srand(5);
+        printk(PRINT_PREF "writing OOBs of whole device\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock(i);
+                if (err)
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "written up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "written %u eraseblocks\n", i);
+
+        /* Check all eraseblocks */
+        use_offset = 0;
+        use_len = mtd->ecclayout->oobavail;
+        use_len_max = mtd->ecclayout->oobavail;
+        vary_offset = 1;
+        simple_srand(5);
+        err = verify_all_eraseblocks();
+        if (err)
+                goto out;
+
+        use_offset = 0;
+        use_len = mtd->ecclayout->oobavail;
+        use_len_max = mtd->ecclayout->oobavail;
+        vary_offset = 0;
+
+        /* Fourth test: try to write off end of device */
+        printk(PRINT_PREF "test 4 of 5\n");
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        addr0 = 0;
+        for (i = 0; bbt[i] && i < ebcnt; ++i)
+                addr0 += mtd->erasesize;
+
+        /* Attempt to write off end of OOB */
+        ops.mode      = MTD_OOB_AUTO;
+        ops.len       = 0;
+        ops.retlen    = 0;
+        ops.ooblen    = 1;
+        ops.oobretlen = 0;
+        ops.ooboffs   = mtd->ecclayout->oobavail;
+        ops.datbuf    = 0;
+        ops.oobbuf    = writebuf;
+        printk(PRINT_PREF "attempting to start write past end of OOB\n");
+        printk(PRINT_PREF "an error is expected...\n");
+        err = mtd->write_oob(mtd, addr0, &ops);
+        if (err) {
+                printk(PRINT_PREF "error occurred as expected\n");
+                err = 0;
+        } else {
+                printk(PRINT_PREF "error: can write past end of OOB\n");
+                errcnt += 1;
+        }
+
+        /* Attempt to read off end of OOB */
+        ops.mode      = MTD_OOB_AUTO;
+        ops.len       = 0;
+        ops.retlen    = 0;
+        ops.ooblen    = 1;
+        ops.oobretlen = 0;
+        ops.ooboffs   = mtd->ecclayout->oobavail;
+        ops.datbuf    = 0;
+        ops.oobbuf    = readbuf;
+        printk(PRINT_PREF "attempting to start read past end of OOB\n");
+        printk(PRINT_PREF "an error is expected...\n");
+        err = mtd->read_oob(mtd, addr0, &ops);
+        if (err) {
+                printk(PRINT_PREF "error occurred as expected\n");
+                err = 0;
+        } else {
+                printk(PRINT_PREF "error: can read past end of OOB\n");
+                errcnt += 1;
+        }
+
+        if (bbt[ebcnt - 1])
+                printk(PRINT_PREF "skipping end of device tests because last "
+                       "block is bad\n");
+        else {
+                /* Attempt to write off end of device */
+                ops.mode      = MTD_OOB_AUTO;
+                ops.len       = 0;
+                ops.retlen    = 0;
+                ops.ooblen    = mtd->ecclayout->oobavail + 1;
+                ops.oobretlen = 0;
+                ops.ooboffs   = 0;
+                ops.datbuf    = 0;
+                ops.oobbuf    = writebuf;
+                printk(PRINT_PREF "attempting to write past end of device\n");
+                printk(PRINT_PREF "an error is expected...\n");
+                err = mtd->write_oob(mtd, mtd->size - mtd->writesize, &ops);
+                if (err) {
+                        printk(PRINT_PREF "error occurred as expected\n");
+                        err = 0;
+                } else {
+                        printk(PRINT_PREF "error: wrote past end of device\n");
+                        errcnt += 1;
+                }
+
+                /* Attempt to read off end of device */
+                ops.mode      = MTD_OOB_AUTO;
+                ops.len       = 0;
+                ops.retlen    = 0;
+                ops.ooblen    = mtd->ecclayout->oobavail + 1;
+                ops.oobretlen = 0;
+                ops.ooboffs   = 0;
+                ops.datbuf    = 0;
+                ops.oobbuf    = readbuf;
+                printk(PRINT_PREF "attempting to read past end of device\n");
+                printk(PRINT_PREF "an error is expected...\n");
+                err = mtd->read_oob(mtd, mtd->size - mtd->writesize, &ops);
+                if (err) {
+                        printk(PRINT_PREF "error occurred as expected\n");
+                        err = 0;
+                } else {
+                        printk(PRINT_PREF "error: read past end of device\n");
+                        errcnt += 1;
+                }
+
+                err = erase_eraseblock(ebcnt - 1);
+                if (err)
+                        goto out;
+
+                /* Attempt to write off end of device */
+                ops.mode      = MTD_OOB_AUTO;
+                ops.len       = 0;
+                ops.retlen    = 0;
+                ops.ooblen    = mtd->ecclayout->oobavail;
+                ops.oobretlen = 0;
+                ops.ooboffs   = 1;
+                ops.datbuf    = 0;
+                ops.oobbuf    = writebuf;
+                printk(PRINT_PREF "attempting to write past end of device\n");
+                printk(PRINT_PREF "an error is expected...\n");
+                err = mtd->write_oob(mtd, mtd->size - mtd->writesize, &ops);
+                if (err) {
+                        printk(PRINT_PREF "error occurred as expected\n");
+                        err = 0;
+                } else {
+                        printk(PRINT_PREF "error: wrote past end of device\n");
+                        errcnt += 1;
+                }
+
+                /* Attempt to read off end of device */
+                ops.mode      = MTD_OOB_AUTO;
+                ops.len       = 0;
+                ops.retlen    = 0;
+                ops.ooblen    = mtd->ecclayout->oobavail;
+                ops.oobretlen = 0;
+                ops.ooboffs   = 1;
+                ops.datbuf    = 0;
+                ops.oobbuf    = readbuf;
+                printk(PRINT_PREF "attempting to read past end of device\n");
+                printk(PRINT_PREF "an error is expected...\n");
+                err = mtd->read_oob(mtd, mtd->size - mtd->writesize, &ops);
+                if (err) {
+                        printk(PRINT_PREF "error occurred as expected\n");
+                        err = 0;
+                } else {
+                        printk(PRINT_PREF "error: read past end of device\n");
+                        errcnt += 1;
+                }
+        }
+
+        /* Fifth test: write / read across block boundaries */
+        printk(PRINT_PREF "test 5 of 5\n");
+
+        /* Erase all eraseblocks */
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        /* Write all eraseblocks */
+        simple_srand(11);
+        printk(PRINT_PREF "writing OOBs of whole device\n");
+        for (i = 0; i < ebcnt - 1; ++i) {
+                int cnt = 2;
+                int pg;
+                size_t sz = mtd->ecclayout->oobavail;
+                if (bbt[i] || bbt[i + 1])
+                        continue;
+                addr = (i + 1) * mtd->erasesize - mtd->writesize;
+                for (pg = 0; pg < cnt; ++pg) {
+                        set_random_data(writebuf, sz);
+                        ops.mode      = MTD_OOB_AUTO;
+                        ops.len       = 0;
+                        ops.retlen    = 0;
+                        ops.ooblen    = sz;
+                        ops.oobretlen = 0;
+                        ops.ooboffs   = 0;
+                        ops.datbuf    = 0;
+                        ops.oobbuf    = writebuf;
+                        err = mtd->write_oob(mtd, addr, &ops);
+                        if (err)
+                                goto out;
+                        if (i % 256 == 0)
+                                printk(PRINT_PREF "written up to eraseblock "
+                                       "%u\n", i);
+                        cond_resched();
+                        addr += mtd->writesize;
+                }
+        }
+        printk(PRINT_PREF "written %u eraseblocks\n", i);
+
+        /* Check all eraseblocks */
+        simple_srand(11);
+        printk(PRINT_PREF "verifying all eraseblocks\n");
+        for (i = 0; i < ebcnt - 1; ++i) {
+                if (bbt[i] || bbt[i + 1])
+                        continue;
+                set_random_data(writebuf, mtd->ecclayout->oobavail * 2);
+                addr = (i + 1) * mtd->erasesize - mtd->writesize;
+                ops.mode      = MTD_OOB_AUTO;
+                ops.len       = 0;
+                ops.retlen    = 0;
+                ops.ooblen    = mtd->ecclayout->oobavail * 2;
+                ops.oobretlen = 0;
+                ops.ooboffs   = 0;
+                ops.datbuf    = 0;
+                ops.oobbuf    = readbuf;
+                err = mtd->read_oob(mtd, addr, &ops);
+                if (err)
+                        goto out;
+                if (memcmp(readbuf, writebuf, mtd->ecclayout->oobavail * 2)) {
+                        printk(PRINT_PREF "error: verify failed at %#llx\n",
+                               (long long)addr);
+                        errcnt += 1;
+                        if (errcnt > 1000) {
+                                printk(PRINT_PREF "error: too many errors\n");
+                                goto out;
+                        }
+                }
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "verified up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "verified %u eraseblocks\n", i);
+
+        printk(PRINT_PREF "finished with %d errors\n", errcnt);
+out:
+        kfree(bbt);
+        kfree(writebuf);
+        kfree(readbuf);
+        put_mtd_device(mtd);
+        if (err)
+                printk(PRINT_PREF "error %d occurred\n", err);
+        printk(KERN_INFO "=================================================\n");
+        return err;
+}
+module_init(mtd_oobtest_init);
+
+static void __exit mtd_oobtest_exit(void)
+{
+        return;
+}
+module_exit(mtd_oobtest_exit);
+
+MODULE_DESCRIPTION("Out-of-band test module");
+MODULE_AUTHOR("Adrian Hunter");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/mtd_pagetest.c b/drivers/mtd/tests/mtd_pagetest.c
new file mode 100644
index 000000000000..9648818b9e2c
--- /dev/null
+++ b/drivers/mtd/tests/mtd_pagetest.c
@@ -0,0 +1,632 @@
+/*
+ * Copyright (C) 2006-2008 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Test page read and write on MTD device.
+ *
+ * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
+ */
+
+#include <asm/div64.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+
+#define PRINT_PREF KERN_INFO "mtd_pagetest: "
+
+static int dev;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static struct mtd_info *mtd;
+static unsigned char *twopages;
+static unsigned char *writebuf;
+static unsigned char *boundary;
+static unsigned char *bbt;
+
+static int pgsize;
+static int bufsize;
+static int ebcnt;
+static int pgcnt;
+static int errcnt;
+static unsigned long next = 1;
+
+static inline unsigned int simple_rand(void)
+{
+        next = next * 1103515245 + 12345;
+        return (unsigned int)((next / 65536) % 32768);
+}
+
+static inline void simple_srand(unsigned long seed)
+{
+        next = seed;
+}
+
+static void set_random_data(unsigned char *buf, size_t len)
+{
+        size_t i;
+
+        for (i = 0; i < len; ++i)
+                buf[i] = simple_rand();
+}
+
+static int erase_eraseblock(int ebnum)
+{
+        int err;
+        struct erase_info ei;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        memset(&ei, 0, sizeof(struct erase_info));
+        ei.mtd  = mtd;
+        ei.addr = addr;
+        ei.len  = mtd->erasesize;
+
+        err = mtd->erase(mtd, &ei);
+        if (err) {
+                printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum);
+                return err;
+        }
+
+        if (ei.state == MTD_ERASE_FAILED) {
+                printk(PRINT_PREF "some erase error occurred at EB %d\n",
+                       ebnum);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int write_eraseblock(int ebnum)
+{
+        int err = 0;
+        size_t written = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        set_random_data(writebuf, mtd->erasesize);
+        cond_resched();
+        err = mtd->write(mtd, addr, mtd->erasesize, &written, writebuf);
+        if (err || written != mtd->erasesize)
+                printk(PRINT_PREF "error: write failed at %#llx\n",
+                       (long long)addr);
+
+        return err;
+}
+
+static int verify_eraseblock(int ebnum)
+{
+        uint32_t j;
+        size_t read = 0;
+        int err = 0, i;
+        loff_t addr0, addrn;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        addr0 = 0;
+        for (i = 0; bbt[i] && i < ebcnt; ++i)
+                addr0 += mtd->erasesize;
+
+        addrn = mtd->size;
+        for (i = 0; bbt[ebcnt - i - 1] && i < ebcnt; ++i)
+                addrn -= mtd->erasesize;
+
+        set_random_data(writebuf, mtd->erasesize);
+        for (j = 0; j < pgcnt - 1; ++j, addr += pgsize) {
+                /* Do a read to set the internal dataRAMs to different data */
+                err = mtd->read(mtd, addr0, bufsize, &read, twopages);
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != bufsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)addr0);
+                        return err;
+                }
+                err = mtd->read(mtd, addrn - bufsize, bufsize, &read, twopages);
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != bufsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)(addrn - bufsize));
+                        return err;
+                }
+                memset(twopages, 0, bufsize);
+                read = 0;
+                err = mtd->read(mtd, addr, bufsize, &read, twopages);
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != bufsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)addr);
+                        break;
+                }
+                if (memcmp(twopages, writebuf + (j * pgsize), bufsize)) {
+                        printk(PRINT_PREF "error: verify failed at %#llx\n",
+                               (long long)addr);
+                        errcnt += 1;
+                }
+        }
+        /* Check boundary between eraseblocks */
+        if (addr <= addrn - pgsize - pgsize && !bbt[ebnum + 1]) {
+                unsigned long oldnext = next;
+                /* Do a read to set the internal dataRAMs to different data */
+                err = mtd->read(mtd, addr0, bufsize, &read, twopages);
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != bufsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)addr0);
+                        return err;
+                }
+                err = mtd->read(mtd, addrn - bufsize, bufsize, &read, twopages);
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != bufsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)(addrn - bufsize));
+                        return err;
+                }
+                memset(twopages, 0, bufsize);
+                read = 0;
+                err = mtd->read(mtd, addr, bufsize, &read, twopages);
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != bufsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)addr);
+                        return err;
+                }
+                memcpy(boundary, writebuf + mtd->erasesize - pgsize, pgsize);
+                set_random_data(boundary + pgsize, pgsize);
+                if (memcmp(twopages, boundary, bufsize)) {
+                        printk(PRINT_PREF "error: verify failed at %#llx\n",
+                               (long long)addr);
+                        errcnt += 1;
+                }
+                next = oldnext;
+        }
+        return err;
+}
+
+static int crosstest(void)
+{
+        size_t read = 0;
+        int err = 0, i;
+        loff_t addr, addr0, addrn;
+        unsigned char *pp1, *pp2, *pp3, *pp4;
+
+        printk(PRINT_PREF "crosstest\n");
+        pp1 = kmalloc(pgsize * 4, GFP_KERNEL);
+        if (!pp1) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                return -ENOMEM;
+        }
+        pp2 = pp1 + pgsize;
+        pp3 = pp2 + pgsize;
+        pp4 = pp3 + pgsize;
+        memset(pp1, 0, pgsize * 4);
+
+        addr0 = 0;
+        for (i = 0; bbt[i] && i < ebcnt; ++i)
+                addr0 += mtd->erasesize;
+
+        addrn = mtd->size;
+        for (i = 0; bbt[ebcnt - i - 1] && i < ebcnt; ++i)
+                addrn -= mtd->erasesize;
+
+        /* Read 2nd-to-last page to pp1 */
+        read = 0;
+        addr = addrn - pgsize - pgsize;
+        err = mtd->read(mtd, addr, pgsize, &read, pp1);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr);
+                kfree(pp1);
+                return err;
+        }
+
+        /* Read 3rd-to-last page to pp1 */
+        read = 0;
+        addr = addrn - pgsize - pgsize - pgsize;
+        err = mtd->read(mtd, addr, pgsize, &read, pp1);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr);
+                kfree(pp1);
+                return err;
+        }
+
+        /* Read first page to pp2 */
+        read = 0;
+        addr = addr0;
+        printk(PRINT_PREF "reading page at %#llx\n", (long long)addr);
+        err = mtd->read(mtd, addr, pgsize, &read, pp2);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr);
+                kfree(pp1);
+                return err;
+        }
+
+        /* Read last page to pp3 */
+        read = 0;
+        addr = addrn - pgsize;
+        printk(PRINT_PREF "reading page at %#llx\n", (long long)addr);
+        err = mtd->read(mtd, addr, pgsize, &read, pp3);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr);
+                kfree(pp1);
+                return err;
+        }
+
+        /* Read first page again to pp4 */
+        read = 0;
+        addr = addr0;
+        printk(PRINT_PREF "reading page at %#llx\n", (long long)addr);
+        err = mtd->read(mtd, addr, pgsize, &read, pp4);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr);
+                kfree(pp1);
+                return err;
+        }
+
+        /* pp2 and pp4 should be the same */
+        printk(PRINT_PREF "verifying pages read at %#llx match\n",
+               (long long)addr0);
+        if (memcmp(pp2, pp4, pgsize)) {
+                printk(PRINT_PREF "verify failed!\n");
+                errcnt += 1;
+        } else if (!err)
+                printk(PRINT_PREF "crosstest ok\n");
+        kfree(pp1);
+        return err;
+}
+
+static int erasecrosstest(void)
+{
+        size_t read = 0, written = 0;
+        int err = 0, i, ebnum, ok = 1, ebnum2;
+        loff_t addr0;
+        char *readbuf = twopages;
+
+        printk(PRINT_PREF "erasecrosstest\n");
+
+        ebnum = 0;
+        addr0 = 0;
+        for (i = 0; bbt[i] && i < ebcnt; ++i) {
+                addr0 += mtd->erasesize;
+                ebnum += 1;
+        }
+
+        ebnum2 = ebcnt - 1;
+        while (ebnum2 && bbt[ebnum2])
+                ebnum2 -= 1;
+
+        printk(PRINT_PREF "erasing block %d\n", ebnum);
+        err = erase_eraseblock(ebnum);
+        if (err)
+                return err;
+
+        printk(PRINT_PREF "writing 1st page of block %d\n", ebnum);
+        set_random_data(writebuf, pgsize);
+        strcpy(writebuf, "There is no data like this!");
+        err = mtd->write(mtd, addr0, pgsize, &written, writebuf);
+        if (err || written != pgsize) {
+                printk(PRINT_PREF "error: write failed at %#llx\n",
+                       (long long)addr0);
+                return err ? err : -1;
+        }
+
+        printk(PRINT_PREF "reading 1st page of block %d\n", ebnum);
+        memset(readbuf, 0, pgsize);
+        err = mtd->read(mtd, addr0, pgsize, &read, readbuf);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr0);
+                return err ? err : -1;
+        }
+
+        printk(PRINT_PREF "verifying 1st page of block %d\n", ebnum);
+        if (memcmp(writebuf, readbuf, pgsize)) {
+                printk(PRINT_PREF "verify failed!\n");
+                errcnt += 1;
+                ok = 0;
+                return err;
+        }
+
+        printk(PRINT_PREF "erasing block %d\n", ebnum);
+        err = erase_eraseblock(ebnum);
+        if (err)
+                return err;
+
+        printk(PRINT_PREF "writing 1st page of block %d\n", ebnum);
+        set_random_data(writebuf, pgsize);
+        strcpy(writebuf, "There is no data like this!");
+        err = mtd->write(mtd, addr0, pgsize, &written, writebuf);
+        if (err || written != pgsize) {
+                printk(PRINT_PREF "error: write failed at %#llx\n",
+                       (long long)addr0);
+                return err ? err : -1;
+        }
+
+        printk(PRINT_PREF "erasing block %d\n", ebnum2);
+        err = erase_eraseblock(ebnum2);
+        if (err)
+                return err;
+
+        printk(PRINT_PREF "reading 1st page of block %d\n", ebnum);
+        memset(readbuf, 0, pgsize);
+        err = mtd->read(mtd, addr0, pgsize, &read, readbuf);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr0);
+                return err ? err : -1;
+        }
+
+        printk(PRINT_PREF "verifying 1st page of block %d\n", ebnum);
+        if (memcmp(writebuf, readbuf, pgsize)) {
+                printk(PRINT_PREF "verify failed!\n");
+                errcnt += 1;
+                ok = 0;
+        }
+
+        if (ok && !err)
+                printk(PRINT_PREF "erasecrosstest ok\n");
+        return err;
+}
+
+static int erasetest(void)
+{
+        size_t read = 0, written = 0;
+        int err = 0, i, ebnum, ok = 1;
+        loff_t addr0;
+
+        printk(PRINT_PREF "erasetest\n");
+
+        ebnum = 0;
+        addr0 = 0;
+        for (i = 0; bbt[i] && i < ebcnt; ++i) {
+                addr0 += mtd->erasesize;
+                ebnum += 1;
+        }
+
+        printk(PRINT_PREF "erasing block %d\n", ebnum);
+        err = erase_eraseblock(ebnum);
+        if (err)
+                return err;
+
+        printk(PRINT_PREF "writing 1st page of block %d\n", ebnum);
+        set_random_data(writebuf, pgsize);
+        err = mtd->write(mtd, addr0, pgsize, &written, writebuf);
+        if (err || written != pgsize) {
+                printk(PRINT_PREF "error: write failed at %#llx\n",
+                       (long long)addr0);
+                return err ? err : -1;
+        }
+
+        printk(PRINT_PREF "erasing block %d\n", ebnum);
+        err = erase_eraseblock(ebnum);
+        if (err)
+                return err;
+
+        printk(PRINT_PREF "reading 1st page of block %d\n", ebnum);
+        err = mtd->read(mtd, addr0, pgsize, &read, twopages);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != pgsize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n",
+                       (long long)addr0);
+                return err ? err : -1;
+        }
+
+        printk(PRINT_PREF "verifying 1st page of block %d is all 0xff\n",
+               ebnum);
+        for (i = 0; i < pgsize; ++i)
+                if (twopages[i] != 0xff) {
+                        printk(PRINT_PREF "verifying all 0xff failed at %d\n",
+                               i);
+                        errcnt += 1;
+                        ok = 0;
+                        break;
+                }
+
+        if (ok && !err)
+                printk(PRINT_PREF "erasetest ok\n");
+
+        return err;
+}
+
+static int is_block_bad(int ebnum)
+{
+        loff_t addr = ebnum * mtd->erasesize;
+        int ret;
+
+        ret = mtd->block_isbad(mtd, addr);
+        if (ret)
+                printk(PRINT_PREF "block %d is bad\n", ebnum);
+        return ret;
+}
+
+static int scan_for_bad_eraseblocks(void)
+{
+        int i, bad = 0;
+
+        bbt = kmalloc(ebcnt, GFP_KERNEL);
+        if (!bbt) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                return -ENOMEM;
+        }
+        memset(bbt, 0 , ebcnt);
+
+        printk(PRINT_PREF "scanning for bad eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                bbt[i] = is_block_bad(i) ? 1 : 0;
+                if (bbt[i])
+                        bad += 1;
+                cond_resched();
+        }
+        printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad);
+        return 0;
+}
+
+static int __init mtd_pagetest_init(void)
+{
+        int err = 0;
+        uint64_t tmp;
+        uint32_t i;
+
+        printk(KERN_INFO "\n");
+        printk(KERN_INFO "=================================================\n");
+        printk(PRINT_PREF "MTD device: %d\n", dev);
+
+        mtd = get_mtd_device(NULL, dev);
+        if (IS_ERR(mtd)) {
+                err = PTR_ERR(mtd);
+                printk(PRINT_PREF "error: cannot get MTD device\n");
+                return err;
+        }
+
+        if (mtd->type != MTD_NANDFLASH) {
+                printk(PRINT_PREF "this test requires NAND flash\n");
+                goto out;
+        }
+
+        tmp = mtd->size;
+        do_div(tmp, mtd->erasesize);
+        ebcnt = tmp;
+        pgcnt = mtd->erasesize / mtd->writesize;
+
+        printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
+               "page size %u, count of eraseblocks %u, pages per "
+               "eraseblock %u, OOB size %u\n",
+               (unsigned long long)mtd->size, mtd->erasesize,
+               pgsize, ebcnt, pgcnt, mtd->oobsize);
+
+        err = -ENOMEM;
+        bufsize = pgsize * 2;
+        writebuf = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!writebuf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+        twopages = kmalloc(bufsize, GFP_KERNEL);
+        if (!twopages) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+        boundary = kmalloc(bufsize, GFP_KERNEL);
+        if (!boundary) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+
+        err = scan_for_bad_eraseblocks();
+        if (err)
+                goto out;
+
+        /* Erase all eraseblocks */
+        printk(PRINT_PREF "erasing whole device\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = erase_eraseblock(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        printk(PRINT_PREF "erased %u eraseblocks\n", i);
+
+        /* Write all eraseblocks */
+        simple_srand(1);
+        printk(PRINT_PREF "writing whole device\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock(i);
+                if (err)
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "written up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "written %u eraseblocks\n", i);
+
+        /* Check all eraseblocks */
+        simple_srand(1);
+        printk(PRINT_PREF "verifying all eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = verify_eraseblock(i);
+                if (err)
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "verified up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "verified %u eraseblocks\n", i);
+
+        err = crosstest();
+        if (err)
+                goto out;
+
+        err = erasecrosstest();
+        if (err)
+                goto out;
+
+        err = erasetest();
+        if (err)
+                goto out;
+
+        printk(PRINT_PREF "finished with %d errors\n", errcnt);
+out:
+
+        kfree(bbt);
+        kfree(boundary);
+        kfree(twopages);
+        kfree(writebuf);
+        put_mtd_device(mtd);
+        if (err)
+                printk(PRINT_PREF "error %d occurred\n", err);
+        printk(KERN_INFO "=================================================\n");
+        return err;
+}
+module_init(mtd_pagetest_init);
+
+static void __exit mtd_pagetest_exit(void)
+{
+        return;
+}
+module_exit(mtd_pagetest_exit);
+
+MODULE_DESCRIPTION("NAND page test");
+MODULE_AUTHOR("Adrian Hunter");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/mtd_readtest.c b/drivers/mtd/tests/mtd_readtest.c
new file mode 100644
index 000000000000..645e77fdc63d
--- /dev/null
+++ b/drivers/mtd/tests/mtd_readtest.c
@@ -0,0 +1,253 @@
+/*
+ * Copyright (C) 2006-2008 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Check MTD device read.
+ *
+ * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+
+#define PRINT_PREF KERN_INFO "mtd_readtest: "
+
+static int dev;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static struct mtd_info *mtd;
+static unsigned char *iobuf;
+static unsigned char *iobuf1;
+static unsigned char *bbt;
+
+static int pgsize;
+static int ebcnt;
+static int pgcnt;
+
+static int read_eraseblock_by_page(int ebnum)
+{
+        size_t read = 0;
+        int i, ret, err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        void *buf = iobuf;
+        void *oobbuf = iobuf1;
+
+        for (i = 0; i < pgcnt; i++) {
+                memset(buf, 0 , pgcnt);
+                ret = mtd->read(mtd, addr, pgsize, &read, buf);
+                if (ret == -EUCLEAN)
+                        ret = 0;
+                if (ret || read != pgsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)addr);
+                        if (!err)
+                                err = ret;
+                        if (!err)
+                                err = -EINVAL;
+                }
+                if (mtd->oobsize) {
+                        struct mtd_oob_ops ops;
+
+                        ops.mode      = MTD_OOB_PLACE;
+                        ops.len       = 0;
+                        ops.retlen    = 0;
+                        ops.ooblen    = mtd->oobsize;
+                        ops.oobretlen = 0;
+                        ops.ooboffs   = 0;
+                        ops.datbuf    = 0;
+                        ops.oobbuf    = oobbuf;
+                        ret = mtd->read_oob(mtd, addr, &ops);
+                        if (ret || ops.oobretlen != mtd->oobsize) {
+                                printk(PRINT_PREF "error: read oob failed at "
+                                                  "%#llx\n", (long long)addr);
+                                if (!err)
+                                        err = ret;
+                                if (!err)
+                                        err = -EINVAL;
+                        }
+                        oobbuf += mtd->oobsize;
+                }
+                addr += pgsize;
+                buf += pgsize;
+        }
+
+        return err;
+}
+
+static void dump_eraseblock(int ebnum)
+{
+        int i, j, n;
+        char line[128];
+        int pg, oob;
+
+        printk(PRINT_PREF "dumping eraseblock %d\n", ebnum);
+        n = mtd->erasesize;
+        for (i = 0; i < n;) {
+                char *p = line;
+
+                p += sprintf(p, "%05x: ", i);
+                for (j = 0; j < 32 && i < n; j++, i++)
+                        p += sprintf(p, "%02x", (unsigned int)iobuf[i]);
+                printk(KERN_CRIT "%s\n", line);
+                cond_resched();
+        }
+        if (!mtd->oobsize)
+                return;
+        printk(PRINT_PREF "dumping oob from eraseblock %d\n", ebnum);
+        n = mtd->oobsize;
+        for (pg = 0, i = 0; pg < pgcnt; pg++)
+                for (oob = 0; oob < n;) {
+                        char *p = line;
+
+                        p += sprintf(p, "%05x: ", i);
+                        for (j = 0; j < 32 && oob < n; j++, oob++, i++)
+                                p += sprintf(p, "%02x",
+                                             (unsigned int)iobuf1[i]);
+                        printk(KERN_CRIT "%s\n", line);
+                        cond_resched();
+                }
+}
+
+static int is_block_bad(int ebnum)
+{
+        loff_t addr = ebnum * mtd->erasesize;
+        int ret;
+
+        ret = mtd->block_isbad(mtd, addr);
+        if (ret)
+                printk(PRINT_PREF "block %d is bad\n", ebnum);
+        return ret;
+}
+
+static int scan_for_bad_eraseblocks(void)
+{
+        int i, bad = 0;
+
+        bbt = kmalloc(ebcnt, GFP_KERNEL);
+        if (!bbt) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                return -ENOMEM;
+        }
+        memset(bbt, 0 , ebcnt);
+
+        printk(PRINT_PREF "scanning for bad eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                bbt[i] = is_block_bad(i) ? 1 : 0;
+                if (bbt[i])
+                        bad += 1;
+                cond_resched();
+        }
+        printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad);
+        return 0;
+}
+
+static int __init mtd_readtest_init(void)
+{
+        uint64_t tmp;
+        int err, i;
+
+        printk(KERN_INFO "\n");
+        printk(KERN_INFO "=================================================\n");
+        printk(PRINT_PREF "MTD device: %d\n", dev);
+
+        mtd = get_mtd_device(NULL, dev);
+        if (IS_ERR(mtd)) {
+                err = PTR_ERR(mtd);
+                printk(PRINT_PREF "error: Cannot get MTD device\n");
+                return err;
+        }
+
+        if (mtd->writesize == 1) {
+                printk(PRINT_PREF "not NAND flash, assume page size is 512 "
+                       "bytes.\n");
+                pgsize = 512;
+        } else
+                pgsize = mtd->writesize;
+
+        tmp = mtd->size;
+        do_div(tmp, mtd->erasesize);
+        ebcnt = tmp;
+        pgcnt = mtd->erasesize / mtd->writesize;
+
+        printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
+               "page size %u, count of eraseblocks %u, pages per "
+               "eraseblock %u, OOB size %u\n",
+               (unsigned long long)mtd->size, mtd->erasesize,
+               pgsize, ebcnt, pgcnt, mtd->oobsize);
+
+        err = -ENOMEM;
+        iobuf = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!iobuf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+        iobuf1 = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!iobuf1) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+
+        err = scan_for_bad_eraseblocks();
+        if (err)
+                goto out;
+
+        /* Read all eraseblocks 1 page at a time */
+        printk(PRINT_PREF "testing page read\n");
+        for (i = 0; i < ebcnt; ++i) {
+                int ret;
+
+                if (bbt[i])
+                        continue;
+                ret = read_eraseblock_by_page(i);
+                if (ret) {
+                        dump_eraseblock(i);
+                        if (!err)
+                                err = ret;
+                }
+                cond_resched();
+        }
+
+        if (err)
+                printk(PRINT_PREF "finished with errors\n");
+        else
+                printk(PRINT_PREF "finished\n");
+
+out:
+
+        kfree(iobuf);
+        kfree(iobuf1);
+        kfree(bbt);
+        put_mtd_device(mtd);
+        if (err)
+                printk(PRINT_PREF "error %d occurred\n", err);
+        printk(KERN_INFO "=================================================\n");
+        return err;
+}
+module_init(mtd_readtest_init);
+
+static void __exit mtd_readtest_exit(void)
+{
+        return;
+}
+module_exit(mtd_readtest_exit);
+
+MODULE_DESCRIPTION("Read test module");
+MODULE_AUTHOR("Adrian Hunter");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/mtd_speedtest.c b/drivers/mtd/tests/mtd_speedtest.c
new file mode 100644
index 000000000000..141363a7e805
--- /dev/null
+++ b/drivers/mtd/tests/mtd_speedtest.c
@@ -0,0 +1,502 @@
+/*
+ * Copyright (C) 2007 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Test read and write speed of a MTD device.
+ *
+ * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+
+#define PRINT_PREF KERN_INFO "mtd_speedtest: "
+
+static int dev;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static struct mtd_info *mtd;
+static unsigned char *iobuf;
+static unsigned char *bbt;
+
+static int pgsize;
+static int ebcnt;
+static int pgcnt;
+static int goodebcnt;
+static struct timeval start, finish;
+static unsigned long next = 1;
+
+static inline unsigned int simple_rand(void)
+{
+        next = next * 1103515245 + 12345;
+        return (unsigned int)((next / 65536) % 32768);
+}
+
+static inline void simple_srand(unsigned long seed)
+{
+        next = seed;
+}
+
+static void set_random_data(unsigned char *buf, size_t len)
+{
+        size_t i;
+
+        for (i = 0; i < len; ++i)
+                buf[i] = simple_rand();
+}
+
+static int erase_eraseblock(int ebnum)
+{
+        int err;
+        struct erase_info ei;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        memset(&ei, 0, sizeof(struct erase_info));
+        ei.mtd  = mtd;
+        ei.addr = addr;
+        ei.len  = mtd->erasesize;
+
+        err = mtd->erase(mtd, &ei);
+        if (err) {
+                printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum);
+                return err;
+        }
+
+        if (ei.state == MTD_ERASE_FAILED) {
+                printk(PRINT_PREF "some erase error occurred at EB %d\n",
+                       ebnum);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int erase_whole_device(void)
+{
+        int err;
+        unsigned int i;
+
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = erase_eraseblock(i);
+                if (err)
+                        return err;
+                cond_resched();
+        }
+        return 0;
+}
+
+static int write_eraseblock(int ebnum)
+{
+        size_t written = 0;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        err = mtd->write(mtd, addr, mtd->erasesize, &written, iobuf);
+        if (err || written != mtd->erasesize) {
+                printk(PRINT_PREF "error: write failed at %#llx\n", addr);
+                if (!err)
+                        err = -EINVAL;
+        }
+
+        return err;
+}
+
+static int write_eraseblock_by_page(int ebnum)
+{
+        size_t written = 0;
+        int i, err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        void *buf = iobuf;
+
+        for (i = 0; i < pgcnt; i++) {
+                err = mtd->write(mtd, addr, pgsize, &written, buf);
+                if (err || written != pgsize) {
+                        printk(PRINT_PREF "error: write failed at %#llx\n",
+                               addr);
+                        if (!err)
+                                err = -EINVAL;
+                        break;
+                }
+                addr += pgsize;
+                buf += pgsize;
+        }
+
+        return err;
+}
+
+static int write_eraseblock_by_2pages(int ebnum)
+{
+        size_t written = 0, sz = pgsize * 2;
+        int i, n = pgcnt / 2, err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        void *buf = iobuf;
+
+        for (i = 0; i < n; i++) {
+                err = mtd->write(mtd, addr, sz, &written, buf);
+                if (err || written != sz) {
+                        printk(PRINT_PREF "error: write failed at %#llx\n",
+                               addr);
+                        if (!err)
+                                err = -EINVAL;
+                        return err;
+                }
+                addr += sz;
+                buf += sz;
+        }
+        if (pgcnt % 2) {
+                err = mtd->write(mtd, addr, pgsize, &written, buf);
+                if (err || written != pgsize) {
+                        printk(PRINT_PREF "error: write failed at %#llx\n",
+                               addr);
+                        if (!err)
+                                err = -EINVAL;
+                }
+        }
+
+        return err;
+}
+
+static int read_eraseblock(int ebnum)
+{
+        size_t read = 0;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        err = mtd->read(mtd, addr, mtd->erasesize, &read, iobuf);
+        /* Ignore corrected ECC errors */
+        if (err == -EUCLEAN)
+                err = 0;
+        if (err || read != mtd->erasesize) {
+                printk(PRINT_PREF "error: read failed at %#llx\n", addr);
+                if (!err)
+                        err = -EINVAL;
+        }
+
+        return err;
+}
+
+static int read_eraseblock_by_page(int ebnum)
+{
+        size_t read = 0;
+        int i, err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        void *buf = iobuf;
+
+        for (i = 0; i < pgcnt; i++) {
+                err = mtd->read(mtd, addr, pgsize, &read, buf);
+                /* Ignore corrected ECC errors */
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != pgsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               addr);
+                        if (!err)
+                                err = -EINVAL;
+                        break;
+                }
+                addr += pgsize;
+                buf += pgsize;
+        }
+
+        return err;
+}
+
+static int read_eraseblock_by_2pages(int ebnum)
+{
+        size_t read = 0, sz = pgsize * 2;
+        int i, n = pgcnt / 2, err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        void *buf = iobuf;
+
+        for (i = 0; i < n; i++) {
+                err = mtd->read(mtd, addr, sz, &read, buf);
+                /* Ignore corrected ECC errors */
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != sz) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               addr);
+                        if (!err)
+                                err = -EINVAL;
+                        return err;
+                }
+                addr += sz;
+                buf += sz;
+        }
+        if (pgcnt % 2) {
+                err = mtd->read(mtd, addr, pgsize, &read, buf);
+                /* Ignore corrected ECC errors */
+                if (err == -EUCLEAN)
+                        err = 0;
+                if (err || read != pgsize) {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               addr);
+                        if (!err)
+                                err = -EINVAL;
+                }
+        }
+
+        return err;
+}
+
+static int is_block_bad(int ebnum)
+{
+        loff_t addr = ebnum * mtd->erasesize;
+        int ret;
+
+        ret = mtd->block_isbad(mtd, addr);
+        if (ret)
+                printk(PRINT_PREF "block %d is bad\n", ebnum);
+        return ret;
+}
+
+static inline void start_timing(void)
+{
+        do_gettimeofday(&start);
+}
+
+static inline void stop_timing(void)
+{
+        do_gettimeofday(&finish);
+}
+
+static long calc_speed(void)
+{
+        long ms, k, speed;
+
+        ms = (finish.tv_sec - start.tv_sec) * 1000 +
+             (finish.tv_usec - start.tv_usec) / 1000;
+        k = goodebcnt * mtd->erasesize / 1024;
+        speed = (k * 1000) / ms;
+        return speed;
+}
+
+static int scan_for_bad_eraseblocks(void)
+{
+        int i, bad = 0;
+
+        bbt = kmalloc(ebcnt, GFP_KERNEL);
+        if (!bbt) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                return -ENOMEM;
+        }
+        memset(bbt, 0 , ebcnt);
+
+        printk(PRINT_PREF "scanning for bad eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                bbt[i] = is_block_bad(i) ? 1 : 0;
+                if (bbt[i])
+                        bad += 1;
+                cond_resched();
+        }
+        printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad);
+        goodebcnt = ebcnt - bad;
+        return 0;
+}
+
+static int __init mtd_speedtest_init(void)
+{
+        int err, i;
+        long speed;
+        uint64_t tmp;
+
+        printk(KERN_INFO "\n");
+        printk(KERN_INFO "=================================================\n");
+        printk(PRINT_PREF "MTD device: %d\n", dev);
+
+        mtd = get_mtd_device(NULL, dev);
+        if (IS_ERR(mtd)) {
+                err = PTR_ERR(mtd);
+                printk(PRINT_PREF "error: cannot get MTD device\n");
+                return err;
+        }
+
+        if (mtd->writesize == 1) {
+                printk(PRINT_PREF "not NAND flash, assume page size is 512 "
+                       "bytes.\n");
+                pgsize = 512;
+        } else
+                pgsize = mtd->writesize;
+
+        tmp = mtd->size;
+        do_div(tmp, mtd->erasesize);
+        ebcnt = tmp;
+        pgcnt = mtd->erasesize / mtd->writesize;
+
+        printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
+               "page size %u, count of eraseblocks %u, pages per "
+               "eraseblock %u, OOB size %u\n",
+               (unsigned long long)mtd->size, mtd->erasesize,
+               pgsize, ebcnt, pgcnt, mtd->oobsize);
+
+        err = -ENOMEM;
+        iobuf = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!iobuf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+
+        simple_srand(1);
+        set_random_data(iobuf, mtd->erasesize);
+
+        err = scan_for_bad_eraseblocks();
+        if (err)
+                goto out;
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        /* Write all eraseblocks, 1 eraseblock at a time */
+        printk(PRINT_PREF "testing eraseblock write speed\n");
+        start_timing();
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        stop_timing();
+        speed = calc_speed();
+        printk(PRINT_PREF "eraseblock write speed is %ld KiB/s\n", speed);
+
+        /* Read all eraseblocks, 1 eraseblock at a time */
+        printk(PRINT_PREF "testing eraseblock read speed\n");
+        start_timing();
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = read_eraseblock(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        stop_timing();
+        speed = calc_speed();
+        printk(PRINT_PREF "eraseblock read speed is %ld KiB/s\n", speed);
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        /* Write all eraseblocks, 1 page at a time */
+        printk(PRINT_PREF "testing page write speed\n");
+        start_timing();
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock_by_page(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        stop_timing();
+        speed = calc_speed();
+        printk(PRINT_PREF "page write speed is %ld KiB/s\n", speed);
+
+        /* Read all eraseblocks, 1 page at a time */
+        printk(PRINT_PREF "testing page read speed\n");
+        start_timing();
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = read_eraseblock_by_page(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        stop_timing();
+        speed = calc_speed();
+        printk(PRINT_PREF "page read speed is %ld KiB/s\n", speed);
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        /* Write all eraseblocks, 2 pages at a time */
+        printk(PRINT_PREF "testing 2 page write speed\n");
+        start_timing();
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock_by_2pages(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        stop_timing();
+        speed = calc_speed();
+        printk(PRINT_PREF "2 page write speed is %ld KiB/s\n", speed);
+
+        /* Read all eraseblocks, 2 pages at a time */
+        printk(PRINT_PREF "testing 2 page read speed\n");
+        start_timing();
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = read_eraseblock_by_2pages(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        stop_timing();
+        speed = calc_speed();
+        printk(PRINT_PREF "2 page read speed is %ld KiB/s\n", speed);
+
+        /* Erase all eraseblocks */
+        printk(PRINT_PREF "Testing erase speed\n");
+        start_timing();
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = erase_eraseblock(i);
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        stop_timing();
+        speed = calc_speed();
+        printk(PRINT_PREF "erase speed is %ld KiB/s\n", speed);
+
+        printk(PRINT_PREF "finished\n");
+out:
+        kfree(iobuf);
+        kfree(bbt);
+        put_mtd_device(mtd);
+        if (err)
+                printk(PRINT_PREF "error %d occurred\n", err);
+        printk(KERN_INFO "=================================================\n");
+        return err;
+}
+module_init(mtd_speedtest_init);
+
+static void __exit mtd_speedtest_exit(void)
+{
+        return;
+}
+module_exit(mtd_speedtest_exit);
+
+MODULE_DESCRIPTION("Speed test module");
+MODULE_AUTHOR("Adrian Hunter");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/mtd_stresstest.c b/drivers/mtd/tests/mtd_stresstest.c
new file mode 100644
index 000000000000..63920476b57a
--- /dev/null
+++ b/drivers/mtd/tests/mtd_stresstest.c
@@ -0,0 +1,330 @@
+/*
+ * Copyright (C) 2006-2008 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Test random reads, writes and erases on MTD device.
+ *
+ * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+#include <linux/vmalloc.h>
+
+#define PRINT_PREF KERN_INFO "mtd_stresstest: "
+
+static int dev;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static int count = 10000;
+module_param(count, int, S_IRUGO);
+MODULE_PARM_DESC(count, "Number of operations to do (default is 10000)");
+
+static struct mtd_info *mtd;
+static unsigned char *writebuf;
+static unsigned char *readbuf;
+static unsigned char *bbt;
+static int *offsets;
+
+static int pgsize;
+static int bufsize;
+static int ebcnt;
+static int pgcnt;
+static unsigned long next = 1;
+
+static inline unsigned int simple_rand(void)
+{
+        next = next * 1103515245 + 12345;
+        return (unsigned int)((next / 65536) % 32768);
+}
+
+static inline void simple_srand(unsigned long seed)
+{
+        next = seed;
+}
+
+static int rand_eb(void)
+{
+        int eb;
+
+again:
+        if (ebcnt < 32768)
+                eb = simple_rand();
+        else
+                eb = (simple_rand() << 15) | simple_rand();
+        /* Read or write up 2 eraseblocks at a time - hence 'ebcnt - 1' */
+        eb %= (ebcnt - 1);
+        if (bbt[eb])
+                goto again;
+        return eb;
+}
+
+static int rand_offs(void)
+{
+        int offs;
+
+        if (bufsize < 32768)
+                offs = simple_rand();
+        else
+                offs = (simple_rand() << 15) | simple_rand();
+        offs %= bufsize;
+        return offs;
+}
+
+static int rand_len(int offs)
+{
+        int len;
+
+        if (bufsize < 32768)
+                len = simple_rand();
+        else
+                len = (simple_rand() << 15) | simple_rand();
+        len %= (bufsize - offs);
+        return len;
+}
+
+static int erase_eraseblock(int ebnum)
+{
+        int err;
+        struct erase_info ei;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        memset(&ei, 0, sizeof(struct erase_info));
+        ei.mtd  = mtd;
+        ei.addr = addr;
+        ei.len  = mtd->erasesize;
+
+        err = mtd->erase(mtd, &ei);
+        if (unlikely(err)) {
+                printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum);
+                return err;
+        }
+
+        if (unlikely(ei.state == MTD_ERASE_FAILED)) {
+                printk(PRINT_PREF "some erase error occurred at EB %d\n",
+                       ebnum);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int is_block_bad(int ebnum)
+{
+        loff_t addr = ebnum * mtd->erasesize;
+        int ret;
+
+        ret = mtd->block_isbad(mtd, addr);
+        if (ret)
+                printk(PRINT_PREF "block %d is bad\n", ebnum);
+        return ret;
+}
+
+static int do_read(void)
+{
+        size_t read = 0;
+        int eb = rand_eb();
+        int offs = rand_offs();
+        int len = rand_len(offs), err;
+        loff_t addr;
+
+        if (bbt[eb + 1]) {
+                if (offs >= mtd->erasesize)
+                        offs -= mtd->erasesize;
+                if (offs + len > mtd->erasesize)
+                        len = mtd->erasesize - offs;
+        }
+        addr = eb * mtd->erasesize + offs;
+        err = mtd->read(mtd, addr, len, &read, readbuf);
+        if (err == -EUCLEAN)
+                err = 0;
+        if (unlikely(err || read != len)) {
+                printk(PRINT_PREF "error: read failed at 0x%llx\n",
+                       (long long)addr);
+                if (!err)
+                        err = -EINVAL;
+                return err;
+        }
+        return 0;
+}
+
+static int do_write(void)
+{
+        int eb = rand_eb(), offs, err, len;
+        size_t written = 0;
+        loff_t addr;
+
+        offs = offsets[eb];
+        if (offs >= mtd->erasesize) {
+                err = erase_eraseblock(eb);
+                if (err)
+                        return err;
+                offs = offsets[eb] = 0;
+        }
+        len = rand_len(offs);
+        len = ((len + pgsize - 1) / pgsize) * pgsize;
+        if (offs + len > mtd->erasesize) {
+                if (bbt[eb + 1])
+                        len = mtd->erasesize - offs;
+                else {
+                        err = erase_eraseblock(eb + 1);
+                        if (err)
+                                return err;
+                        offsets[eb + 1] = 0;
+                }
+        }
+        addr = eb * mtd->erasesize + offs;
+        err = mtd->write(mtd, addr, len, &written, writebuf);
+        if (unlikely(err || written != len)) {
+                printk(PRINT_PREF "error: write failed at 0x%llx\n",
+                       (long long)addr);
+                if (!err)
+                        err = -EINVAL;
+                return err;
+        }
+        offs += len;
+        while (offs > mtd->erasesize) {
+                offsets[eb++] = mtd->erasesize;
+                offs -= mtd->erasesize;
+        }
+        offsets[eb] = offs;
+        return 0;
+}
+
+static int do_operation(void)
+{
+        if (simple_rand() & 1)
+                return do_read();
+        else
+                return do_write();
+}
+
+static int scan_for_bad_eraseblocks(void)
+{
+        int i, bad = 0;
+
+        bbt = kmalloc(ebcnt, GFP_KERNEL);
+        if (!bbt) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                return -ENOMEM;
+        }
+        memset(bbt, 0 , ebcnt);
+
+        printk(PRINT_PREF "scanning for bad eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                bbt[i] = is_block_bad(i) ? 1 : 0;
+                if (bbt[i])
+                        bad += 1;
+                cond_resched();
+        }
+        printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad);
+        return 0;
+}
+
+static int __init mtd_stresstest_init(void)
+{
+        int err;
+        int i, op;
+        uint64_t tmp;
+
+        printk(KERN_INFO "\n");
+        printk(KERN_INFO "=================================================\n");
+        printk(PRINT_PREF "MTD device: %d\n", dev);
+
+        mtd = get_mtd_device(NULL, dev);
+        if (IS_ERR(mtd)) {
+                err = PTR_ERR(mtd);
+                printk(PRINT_PREF "error: cannot get MTD device\n");
+                return err;
+        }
+
+        if (mtd->writesize == 1) {
+                printk(PRINT_PREF "not NAND flash, assume page size is 512 "
+                       "bytes.\n");
+                pgsize = 512;
+        } else
+                pgsize = mtd->writesize;
+
+        tmp = mtd->size;
+        do_div(tmp, mtd->erasesize);
+        ebcnt = tmp;
+        pgcnt = mtd->erasesize / mtd->writesize;
+
+        printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
+               "page size %u, count of eraseblocks %u, pages per "
+               "eraseblock %u, OOB size %u\n",
+               (unsigned long long)mtd->size, mtd->erasesize,
+               pgsize, ebcnt, pgcnt, mtd->oobsize);
+
+        /* Read or write up 2 eraseblocks at a time */
+        bufsize = mtd->erasesize * 2;
+
+        err = -ENOMEM;
+        readbuf = vmalloc(bufsize);
+        writebuf = vmalloc(bufsize);
+        offsets = kmalloc(ebcnt * sizeof(int), GFP_KERNEL);
+        if (!readbuf || !writebuf || !offsets) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+        for (i = 0; i < ebcnt; i++)
+                offsets[i] = mtd->erasesize;
+        simple_srand(current->pid);
+        for (i = 0; i < bufsize; i++)
+                writebuf[i] = simple_rand();
+
+        err = scan_for_bad_eraseblocks();
+        if (err)
+                goto out;
+
+        /* Do operations */
+        printk(PRINT_PREF "doing operations\n");
+        for (op = 0; op < count; op++) {
+                if ((op & 1023) == 0)
+                        printk(PRINT_PREF "%d operations done\n", op);
+                err = do_operation();
+                if (err)
+                        goto out;
+                cond_resched();
+        }
+        printk(PRINT_PREF "finished, %d operations done\n", op);
+
+out:
+        kfree(offsets);
+        kfree(bbt);
+        vfree(writebuf);
+        vfree(readbuf);
+        put_mtd_device(mtd);
+        if (err)
+                printk(PRINT_PREF "error %d occurred\n", err);
+        printk(KERN_INFO "=================================================\n");
+        return err;
+}
+module_init(mtd_stresstest_init);
+
+static void __exit mtd_stresstest_exit(void)
+{
+        return;
+}
+module_exit(mtd_stresstest_exit);
+
+MODULE_DESCRIPTION("Stress test module");
+MODULE_AUTHOR("Adrian Hunter");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/mtd_subpagetest.c b/drivers/mtd/tests/mtd_subpagetest.c
new file mode 100644
index 000000000000..5b889724268e
--- /dev/null
+++ b/drivers/mtd/tests/mtd_subpagetest.c
@@ -0,0 +1,525 @@
+/*
+ * Copyright (C) 2006-2007 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Test sub-page read and write on MTD device.
+ * Author: Adrian Hunter <ext-adrian.hunter@nokia.com>
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+
+#define PRINT_PREF KERN_INFO "mtd_subpagetest: "
+
+static int dev;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static struct mtd_info *mtd;
+static unsigned char *writebuf;
+static unsigned char *readbuf;
+static unsigned char *bbt;
+
+static int subpgsize;
+static int bufsize;
+static int ebcnt;
+static int pgcnt;
+static int errcnt;
+static unsigned long next = 1;
+
+static inline unsigned int simple_rand(void)
+{
+        next = next * 1103515245 + 12345;
+        return (unsigned int)((next / 65536) % 32768);
+}
+
+static inline void simple_srand(unsigned long seed)
+{
+        next = seed;
+}
+
+static void set_random_data(unsigned char *buf, size_t len)
+{
+        size_t i;
+
+        for (i = 0; i < len; ++i)
+                buf[i] = simple_rand();
+}
+
+static inline void clear_data(unsigned char *buf, size_t len)
+{
+        memset(buf, 0, len);
+}
+
+static int erase_eraseblock(int ebnum)
+{
+        int err;
+        struct erase_info ei;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        memset(&ei, 0, sizeof(struct erase_info));
+        ei.mtd  = mtd;
+        ei.addr = addr;
+        ei.len  = mtd->erasesize;
+
+        err = mtd->erase(mtd, &ei);
+        if (err) {
+                printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum);
+                return err;
+        }
+
+        if (ei.state == MTD_ERASE_FAILED) {
+                printk(PRINT_PREF "some erase error occurred at EB %d\n",
+                       ebnum);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int erase_whole_device(void)
+{
+        int err;
+        unsigned int i;
+
+        printk(PRINT_PREF "erasing whole device\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = erase_eraseblock(i);
+                if (err)
+                        return err;
+                cond_resched();
+        }
+        printk(PRINT_PREF "erased %u eraseblocks\n", i);
+        return 0;
+}
+
+static int write_eraseblock(int ebnum)
+{
+        size_t written = 0;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        set_random_data(writebuf, subpgsize);
+        err = mtd->write(mtd, addr, subpgsize, &written, writebuf);
+        if (unlikely(err || written != subpgsize)) {
+                printk(PRINT_PREF "error: write failed at %#llx\n",
+                       (long long)addr);
+                if (written != subpgsize) {
+                        printk(PRINT_PREF "  write size: %#x\n", subpgsize);
+                        printk(PRINT_PREF "  written: %#zx\n", written);
+                }
+                return err ? err : -1;
+        }
+
+        addr += subpgsize;
+
+        set_random_data(writebuf, subpgsize);
+        err = mtd->write(mtd, addr, subpgsize, &written, writebuf);
+        if (unlikely(err || written != subpgsize)) {
+                printk(PRINT_PREF "error: write failed at %#llx\n",
+                       (long long)addr);
+                if (written != subpgsize) {
+                        printk(PRINT_PREF "  write size: %#x\n", subpgsize);
+                        printk(PRINT_PREF "  written: %#zx\n", written);
+                }
+                return err ? err : -1;
+        }
+
+        return err;
+}
+
+static int write_eraseblock2(int ebnum)
+{
+        size_t written = 0;
+        int err = 0, k;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        for (k = 1; k < 33; ++k) {
+                if (addr + (subpgsize * k) > (ebnum + 1) * mtd->erasesize)
+                        break;
+                set_random_data(writebuf, subpgsize * k);
+                err = mtd->write(mtd, addr, subpgsize * k, &written, writebuf);
+                if (unlikely(err || written != subpgsize * k)) {
+                        printk(PRINT_PREF "error: write failed at %#llx\n",
+                               (long long)addr);
+                        if (written != subpgsize) {
+                                printk(PRINT_PREF "  write size: %#x\n",
+                                       subpgsize * k);
+                                printk(PRINT_PREF "  written: %#08zx\n",
+                                       written);
+                        }
+                        return err ? err : -1;
+                }
+                addr += subpgsize * k;
+        }
+
+        return err;
+}
+
+static void print_subpage(unsigned char *p)
+{
+        int i, j;
+
+        for (i = 0; i < subpgsize; ) {
+                for (j = 0; i < subpgsize && j < 32; ++i, ++j)
+                        printk("%02x", *p++);
+                printk("\n");
+        }
+}
+
+static int verify_eraseblock(int ebnum)
+{
+        size_t read = 0;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        set_random_data(writebuf, subpgsize);
+        clear_data(readbuf, subpgsize);
+        read = 0;
+        err = mtd->read(mtd, addr, subpgsize, &read, readbuf);
+        if (unlikely(err || read != subpgsize)) {
+                if (err == -EUCLEAN && read == subpgsize) {
+                        printk(PRINT_PREF "ECC correction at %#llx\n",
+                               (long long)addr);
+                        err = 0;
+                } else {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)addr);
+                        return err ? err : -1;
+                }
+        }
+        if (unlikely(memcmp(readbuf, writebuf, subpgsize))) {
+                printk(PRINT_PREF "error: verify failed at %#llx\n",
+                       (long long)addr);
+                printk(PRINT_PREF "------------- written----------------\n");
+                print_subpage(writebuf);
+                printk(PRINT_PREF "------------- read ------------------\n");
+                print_subpage(readbuf);
+                printk(PRINT_PREF "-------------------------------------\n");
+                errcnt += 1;
+        }
+
+        addr += subpgsize;
+
+        set_random_data(writebuf, subpgsize);
+        clear_data(readbuf, subpgsize);
+        read = 0;
+        err = mtd->read(mtd, addr, subpgsize, &read, readbuf);
+        if (unlikely(err || read != subpgsize)) {
+                if (err == -EUCLEAN && read == subpgsize) {
+                        printk(PRINT_PREF "ECC correction at %#llx\n",
+                               (long long)addr);
+                        err = 0;
+                } else {
+                        printk(PRINT_PREF "error: read failed at %#llx\n",
+                               (long long)addr);
+                        return err ? err : -1;
+                }
+        }
+        if (unlikely(memcmp(readbuf, writebuf, subpgsize))) {
+                printk(PRINT_PREF "error: verify failed at %#llx\n",
+                       (long long)addr);
+                printk(PRINT_PREF "------------- written----------------\n");
+                print_subpage(writebuf);
+                printk(PRINT_PREF "------------- read ------------------\n");
+                print_subpage(readbuf);
+                printk(PRINT_PREF "-------------------------------------\n");
+                errcnt += 1;
+        }
+
+        return err;
+}
+
+static int verify_eraseblock2(int ebnum)
+{
+        size_t read = 0;
+        int err = 0, k;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        for (k = 1; k < 33; ++k) {
+                if (addr + (subpgsize * k) > (ebnum + 1) * mtd->erasesize)
+                        break;
+                set_random_data(writebuf, subpgsize * k);
+                clear_data(readbuf, subpgsize * k);
+                read = 0;
+                err = mtd->read(mtd, addr, subpgsize * k, &read, readbuf);
+                if (unlikely(err || read != subpgsize * k)) {
+                        if (err == -EUCLEAN && read == subpgsize * k) {
+                                printk(PRINT_PREF "ECC correction at %#llx\n",
+                                       (long long)addr);
+                                err = 0;
+                        } else {
+                                printk(PRINT_PREF "error: read failed at "
+                                       "%#llx\n", (long long)addr);
+                                return err ? err : -1;
+                        }
+                }
+                if (unlikely(memcmp(readbuf, writebuf, subpgsize * k))) {
+                        printk(PRINT_PREF "error: verify failed at %#llx\n",
+                               (long long)addr);
+                        errcnt += 1;
+                }
+                addr += subpgsize * k;
+        }
+
+        return err;
+}
+
+static int verify_eraseblock_ff(int ebnum)
+{
+        uint32_t j;
+        size_t read = 0;
+        int err = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        memset(writebuf, 0xff, subpgsize);
+        for (j = 0; j < mtd->erasesize / subpgsize; ++j) {
+                clear_data(readbuf, subpgsize);
+                read = 0;
+                err = mtd->read(mtd, addr, subpgsize, &read, readbuf);
+                if (unlikely(err || read != subpgsize)) {
+                        if (err == -EUCLEAN && read == subpgsize) {
+                                printk(PRINT_PREF "ECC correction at %#llx\n",
+                                       (long long)addr);
+                                err = 0;
+                        } else {
+                                printk(PRINT_PREF "error: read failed at "
+                                       "%#llx\n", (long long)addr);
+                                return err ? err : -1;
+                        }
+                }
+                if (unlikely(memcmp(readbuf, writebuf, subpgsize))) {
+                        printk(PRINT_PREF "error: verify 0xff failed at "
+                               "%#llx\n", (long long)addr);
+                        errcnt += 1;
+                }
+                addr += subpgsize;
+        }
+
+        return err;
+}
+
+static int verify_all_eraseblocks_ff(void)
+{
+        int err;
+        unsigned int i;
+
+        printk(PRINT_PREF "verifying all eraseblocks for 0xff\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = verify_eraseblock_ff(i);
+                if (err)
+                        return err;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "verified up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "verified %u eraseblocks\n", i);
+        return 0;
+}
+
+static int is_block_bad(int ebnum)
+{
+        loff_t addr = ebnum * mtd->erasesize;
+        int ret;
+
+        ret = mtd->block_isbad(mtd, addr);
+        if (ret)
+                printk(PRINT_PREF "block %d is bad\n", ebnum);
+        return ret;
+}
+
+static int scan_for_bad_eraseblocks(void)
+{
+        int i, bad = 0;
+
+        bbt = kmalloc(ebcnt, GFP_KERNEL);
+        if (!bbt) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                return -ENOMEM;
+        }
+        memset(bbt, 0 , ebcnt);
+
+        printk(PRINT_PREF "scanning for bad eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                bbt[i] = is_block_bad(i) ? 1 : 0;
+                if (bbt[i])
+                        bad += 1;
+                cond_resched();
+        }
+        printk(PRINT_PREF "scanned %d eraseblocks, %d are bad\n", i, bad);
+        return 0;
+}
+
+static int __init mtd_subpagetest_init(void)
+{
+        int err = 0;
+        uint32_t i;
+        uint64_t tmp;
+
+        printk(KERN_INFO "\n");
+        printk(KERN_INFO "=================================================\n");
+        printk(PRINT_PREF "MTD device: %d\n", dev);
+
+        mtd = get_mtd_device(NULL, dev);
+        if (IS_ERR(mtd)) {
+                err = PTR_ERR(mtd);
+                printk(PRINT_PREF "error: cannot get MTD device\n");
+                return err;
+        }
+
+        if (mtd->type != MTD_NANDFLASH) {
+                printk(PRINT_PREF "this test requires NAND flash\n");
+                goto out;
+        }
+
+        subpgsize = mtd->writesize >> mtd->subpage_sft;
+        printk(PRINT_PREF "MTD device size %llu, eraseblock size %u, "
+               "page size %u, subpage size %u, count of eraseblocks %u, "
+               "pages per eraseblock %u, OOB size %u\n",
+               (unsigned long long)mtd->size, mtd->erasesize,
+               mtd->writesize, subpgsize, ebcnt, pgcnt, mtd->oobsize);
+
+        err = -ENOMEM;
+        bufsize = subpgsize * 32;
+        writebuf = kmalloc(bufsize, GFP_KERNEL);
+        if (!writebuf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+        readbuf = kmalloc(bufsize, GFP_KERNEL);
+        if (!readbuf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out;
+        }
+
+        tmp = mtd->size;
+        do_div(tmp, mtd->erasesize);
+        ebcnt = tmp;
+        pgcnt = mtd->erasesize / mtd->writesize;
+
+        err = scan_for_bad_eraseblocks();
+        if (err)
+                goto out;
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        printk(PRINT_PREF "writing whole device\n");
+        simple_srand(1);
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock(i);
+                if (unlikely(err))
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "written up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "written %u eraseblocks\n", i);
+
+        simple_srand(1);
+        printk(PRINT_PREF "verifying all eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = verify_eraseblock(i);
+                if (unlikely(err))
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "verified up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "verified %u eraseblocks\n", i);
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        err = verify_all_eraseblocks_ff();
+        if (err)
+                goto out;
+
+        /* Write all eraseblocks */
+        simple_srand(3);
+        printk(PRINT_PREF "writing whole device\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = write_eraseblock2(i);
+                if (unlikely(err))
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "written up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "written %u eraseblocks\n", i);
+
+        /* Check all eraseblocks */
+        simple_srand(3);
+        printk(PRINT_PREF "verifying all eraseblocks\n");
+        for (i = 0; i < ebcnt; ++i) {
+                if (bbt[i])
+                        continue;
+                err = verify_eraseblock2(i);
+                if (unlikely(err))
+                        goto out;
+                if (i % 256 == 0)
+                        printk(PRINT_PREF "verified up to eraseblock %u\n", i);
+                cond_resched();
+        }
+        printk(PRINT_PREF "verified %u eraseblocks\n", i);
+
+        err = erase_whole_device();
+        if (err)
+                goto out;
+
+        err = verify_all_eraseblocks_ff();
+        if (err)
+                goto out;
+
+        printk(PRINT_PREF "finished with %d errors\n", errcnt);
+
+out:
+        kfree(bbt);
+        kfree(readbuf);
+        kfree(writebuf);
+        put_mtd_device(mtd);
+        if (err)
+                printk(PRINT_PREF "error %d occurred\n", err);
+        printk(KERN_INFO "=================================================\n");
+        return err;
+}
+module_init(mtd_subpagetest_init);
+
+static void __exit mtd_subpagetest_exit(void)
+{
+        return;
+}
+module_exit(mtd_subpagetest_exit);
+
+MODULE_DESCRIPTION("Subpage test module");
+MODULE_AUTHOR("Adrian Hunter");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/tests/mtd_torturetest.c b/drivers/mtd/tests/mtd_torturetest.c
new file mode 100644
index 000000000000..631a0ab3a33c
--- /dev/null
+++ b/drivers/mtd/tests/mtd_torturetest.c
@@ -0,0 +1,530 @@
+/*
+ * Copyright (C) 2006-2008 Artem Bityutskiy
+ * Copyright (C) 2006-2008 Jarkko Lavinen
+ * Copyright (C) 2006-2008 Adrian Hunter
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING. If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Authors: Artem Bityutskiy, Jarkko Lavinen, Adria Hunter
+ *
+ * WARNING: this test program may kill your flash and your device. Do not
+ * use it unless you know what you do. Authors are not responsible for any
+ * damage caused by this program.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <linux/sched.h>
+
+#define PRINT_PREF KERN_INFO "mtd_torturetest: "
+#define RETRIES 3
+
+static int eb = 8;
+module_param(eb, int, S_IRUGO);
+MODULE_PARM_DESC(eb, "eraseblock number within the selected MTD device");
+
+static int ebcnt = 32;
+module_param(ebcnt, int, S_IRUGO);
+MODULE_PARM_DESC(ebcnt, "number of consecutive eraseblocks to torture");
+
+static int pgcnt;
+module_param(pgcnt, int, S_IRUGO);
+MODULE_PARM_DESC(pgcnt, "number of pages per eraseblock to torture (0 => all)");
+
+static int dev;
+module_param(dev, int, S_IRUGO);
+MODULE_PARM_DESC(dev, "MTD device number to use");
+
+static int gran = 512;
+module_param(gran, int, S_IRUGO);
+MODULE_PARM_DESC(gran, "how often the status information should be printed");
+
+static int check = 1;
+module_param(check, int, S_IRUGO);
+MODULE_PARM_DESC(check, "if the written data should be checked");
+
+static unsigned int cycles_count;
+module_param(cycles_count, uint, S_IRUGO);
+MODULE_PARM_DESC(cycles_count, "how many erase cycles to do "
+                               "(infinite by default)");
+
+static struct mtd_info *mtd;
+
+/* This buffer contains 0x555555...0xAAAAAA... pattern */
+static unsigned char *patt_5A5;
+/* This buffer contains 0xAAAAAA...0x555555... pattern */
+static unsigned char *patt_A5A;
+/* This buffer contains all 0xFF bytes */
+static unsigned char *patt_FF;
+/* This a temporary buffer is use when checking data */
+static unsigned char *check_buf;
+/* How many erase cycles were done */
+static unsigned int erase_cycles;
+
+static int pgsize;
+static struct timeval start, finish;
+
+static void report_corrupt(unsigned char *read, unsigned char *written);
+
+static inline void start_timing(void)
+{
+        do_gettimeofday(&start);
+}
+
+static inline void stop_timing(void)
+{
+        do_gettimeofday(&finish);
+}
+
+/*
+ * Erase eraseblock number @ebnum.
+ */
+static inline int erase_eraseblock(int ebnum)
+{
+        int err;
+        struct erase_info ei;
+        loff_t addr = ebnum * mtd->erasesize;
+
+        memset(&ei, 0, sizeof(struct erase_info));
+        ei.mtd  = mtd;
+        ei.addr = addr;
+        ei.len  = mtd->erasesize;
+
+        err = mtd->erase(mtd, &ei);
+        if (err) {
+                printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum);
+                return err;
+        }
+
+        if (ei.state == MTD_ERASE_FAILED) {
+                printk(PRINT_PREF "some erase error occurred at EB %d\n",
+                       ebnum);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+/*
+ * Check that the contents of eraseblock number @enbum is equivalent to the
+ * @buf buffer.
+ */
+static inline int check_eraseblock(int ebnum, unsigned char *buf)
+{
+        int err, retries = 0;
+        size_t read = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        size_t len = mtd->erasesize;
+
+        if (pgcnt) {
+                addr = (ebnum + 1) * mtd->erasesize - pgcnt * pgsize;
+                len = pgcnt * pgsize;
+        }
+
+retry:
+        err = mtd->read(mtd, addr, len, &read, check_buf);
+        if (err == -EUCLEAN)
+                printk(PRINT_PREF "single bit flip occurred at EB %d "
+                       "MTD reported that it was fixed.\n", ebnum);
+        else if (err) {
+                printk(PRINT_PREF "error %d while reading EB %d, "
+                       "read %zd\n", err, ebnum, read);
+                return err;
+        }
+
+        if (read != len) {
+                printk(PRINT_PREF "failed to read %zd bytes from EB %d, "
+                       "read only %zd, but no error reported\n",
+                       len, ebnum, read);
+                return -EIO;
+        }
+
+        if (memcmp(buf, check_buf, len)) {
+                printk(PRINT_PREF "read wrong data from EB %d\n", ebnum);
+                report_corrupt(check_buf, buf);
+
+                if (retries++ < RETRIES) {
+                        /* Try read again */
+                        yield();
+                        printk(PRINT_PREF "re-try reading data from EB %d\n",
+                               ebnum);
+                        goto retry;
+                } else {
+                        printk(PRINT_PREF "retried %d times, still errors, "
+                               "give-up\n", RETRIES);
+                        return -EINVAL;
+                }
+        }
+
+        if (retries != 0)
+                printk(PRINT_PREF "only attempt number %d was OK (!!!)\n",
+                       retries);
+
+        return 0;
+}
+
+static inline int write_pattern(int ebnum, void *buf)
+{
+        int err;
+        size_t written = 0;
+        loff_t addr = ebnum * mtd->erasesize;
+        size_t len = mtd->erasesize;
+
+        if (pgcnt) {
+                addr = (ebnum + 1) * mtd->erasesize - pgcnt * pgsize;
+                len = pgcnt * pgsize;
+        }
+        err = mtd->write(mtd, addr, len, &written, buf);
+        if (err) {
+                printk(PRINT_PREF "error %d while writing EB %d, written %zd"
+                      " bytes\n", err, ebnum, written);
+                return err;
+        }
+        if (written != len) {
+                printk(PRINT_PREF "written only %zd bytes of %zd, but no error"
+                       " reported\n", written, len);
+                return -EIO;
+        }
+
+        return 0;
+}
+
+static int __init tort_init(void)
+{
+        int err = 0, i, infinite = !cycles_count;
+        int bad_ebs[ebcnt];
+
+        printk(KERN_INFO "\n");
+        printk(KERN_INFO "=================================================\n");
+        printk(PRINT_PREF "Warning: this program is trying to wear out your "
+               "flash, stop it if this is not wanted.\n");
+        printk(PRINT_PREF "MTD device: %d\n", dev);
+        printk(PRINT_PREF "torture %d eraseblocks (%d-%d) of mtd%d\n",
+               ebcnt, eb, eb + ebcnt - 1, dev);
+        if (pgcnt)
+                printk(PRINT_PREF "torturing just %d pages per eraseblock\n",
+                        pgcnt);
+        printk(PRINT_PREF "write verify %s\n", check ? "enabled" : "disabled");
+
+        mtd = get_mtd_device(NULL, dev);
+        if (IS_ERR(mtd)) {
+                err = PTR_ERR(mtd);
+                printk(PRINT_PREF "error: cannot get MTD device\n");
+                return err;
+        }
+
+        if (mtd->writesize == 1) {
+                printk(PRINT_PREF "not NAND flash, assume page size is 512 "
+                       "bytes.\n");
+                pgsize = 512;
+        } else
+                pgsize = mtd->writesize;
+
+        if (pgcnt && (pgcnt > mtd->erasesize / pgsize || pgcnt < 0)) {
+                printk(PRINT_PREF "error: invalid pgcnt value %d\n", pgcnt);
+                goto out_mtd;
+        }
+
+        err = -ENOMEM;
+        patt_5A5 = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!patt_5A5) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out_mtd;
+        }
+
+        patt_A5A = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!patt_A5A) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out_patt_5A5;
+        }
+
+        patt_FF = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!patt_FF) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out_patt_A5A;
+        }
+
+        check_buf = kmalloc(mtd->erasesize, GFP_KERNEL);
+        if (!check_buf) {
+                printk(PRINT_PREF "error: cannot allocate memory\n");
+                goto out_patt_FF;
+        }
+
+        err = 0;
+
+        /* Initialize patterns */
+        memset(patt_FF, 0xFF, mtd->erasesize);
+        for (i = 0; i < mtd->erasesize / pgsize; i++) {
+                if (!(i & 1)) {
+                        memset(patt_5A5 + i * pgsize, 0x55, pgsize);
+                        memset(patt_A5A + i * pgsize, 0xAA, pgsize);
+                } else {
+                        memset(patt_5A5 + i * pgsize, 0xAA, pgsize);
+                        memset(patt_A5A + i * pgsize, 0x55, pgsize);
+                }
+        }
+
+        /*
+         * Check if there is a bad eraseblock among those we are going to test.
+         */
+        memset(&bad_ebs[0], 0, sizeof(int) * ebcnt);
+        if (mtd->block_isbad) {
+                for (i = eb; i < eb + ebcnt; i++) {
+                        err = mtd->block_isbad(mtd,
+                                               (loff_t)i * mtd->erasesize);
+
+                        if (err < 0) {
+                                printk(PRINT_PREF "block_isbad() returned %d "
+                                       "for EB %d\n", err, i);
+                                goto out;
+                        }
+
+                        if (err) {
+                                printk("EB %d is bad. Skip it.\n", i);
+                                bad_ebs[i - eb] = 1;
+                        }
+                }
+        }
+
+        start_timing();
+        while (1) {
+                int i;
+                void *patt;
+
+                /* Erase all eraseblocks */
+                for (i = eb; i < eb + ebcnt; i++) {
+                        if (bad_ebs[i - eb])
+                                continue;
+                        err = erase_eraseblock(i);
+                        if (err)
+                                goto out;
+                        cond_resched();
+                }
+
+                /* Check if the eraseblocks contain only 0xFF bytes */
+                if (check) {
+                        for (i = eb; i < eb + ebcnt; i++) {
+                                if (bad_ebs[i - eb])
+                                        continue;
+                                err = check_eraseblock(i, patt_FF);
+                                if (err) {
+                                        printk(PRINT_PREF "verify failed"
+                                               " for 0xFF... pattern\n");
+                                        goto out;
+                                }
+                                cond_resched();
+                        }
+                }
+
+                /* Write the pattern */
+                for (i = eb; i < eb + ebcnt; i++) {
+                        if (bad_ebs[i - eb])
+                                continue;
+                        if ((eb + erase_cycles) & 1)
+                                patt = patt_5A5;
+                        else
+                                patt = patt_A5A;
+                        err = write_pattern(i, patt);
+                        if (err)
+                                goto out;
+                        cond_resched();
+                }
+
+                /* Verify what we wrote */
+                if (check) {
+                        for (i = eb; i < eb + ebcnt; i++) {
+                                if (bad_ebs[i - eb])
+                                        continue;
+                                if ((eb + erase_cycles) & 1)
+                                        patt = patt_5A5;
+                                else
+                                        patt = patt_A5A;
+                                err = check_eraseblock(i, patt);
+                                if (err) {
+                                        printk(PRINT_PREF "verify failed for %s"
+                                               " pattern\n",
+                                               ((eb + erase_cycles) & 1) ?
+                                               "0x55AA55..." : "0xAA55AA...");
+                                        goto out;
+                                }
+                                cond_resched();
+                        }
+                }
+
+                erase_cycles += 1;
+
+                if (erase_cycles % gran == 0) {
+                        long ms;
+
+                        stop_timing();
+                        ms = (finish.tv_sec - start.tv_sec) * 1000 +
+                             (finish.tv_usec - start.tv_usec) / 1000;
+                        printk(PRINT_PREF "%08u erase cycles done, took %lu "
+                               "milliseconds (%lu seconds)\n",
+                               erase_cycles, ms, ms / 1000);
+                        start_timing();
+                }
+
+                if (!infinite && --cycles_count == 0)
+                        break;
+        }
+out:
+
+        printk(PRINT_PREF "finished after %u erase cycles\n",
+               erase_cycles);
+        kfree(check_buf);
+out_patt_FF:
+        kfree(patt_FF);
+out_patt_A5A:
+        kfree(patt_A5A);
+out_patt_5A5:
+        kfree(patt_5A5);
+out_mtd:
+        put_mtd_device(mtd);
+        if (err)
+                printk(PRINT_PREF "error %d occurred during torturing\n", err);
+        printk(KERN_INFO "=================================================\n");
+        return err;
+}
+module_init(tort_init);
+
+static void __exit tort_exit(void)
+{
+        return;
+}
+module_exit(tort_exit);
+
+static int countdiffs(unsigned char *buf, unsigned char *check_buf,
+                      unsigned offset, unsigned len, unsigned *bytesp,
+                      unsigned *bitsp);
+static void print_bufs(unsigned char *read, unsigned char *written, int start,
+                       int len);
+
+/*
+ * Report the detailed information about how the read EB differs from what was
+ * written.
+ */
+static void report_corrupt(unsigned char *read, unsigned char *written)
+{
+        int i;
+        int bytes, bits, pages, first;
+        int offset, len;
+        size_t check_len = mtd->erasesize;
+
+        if (pgcnt)
+                check_len = pgcnt * pgsize;
+
+        bytes = bits = pages = 0;
+        for (i = 0; i < check_len; i += pgsize)
+                if (countdiffs(written, read, i, pgsize, &bytes,
+                               &bits) >= 0)
+                        pages++;
+
+        printk(PRINT_PREF "verify fails on %d pages, %d bytes/%d bits\n",
+               pages, bytes, bits);
+        printk(PRINT_PREF "The following is a list of all differences between"
+               " what was read from flash and what was expected\n");
+
+        for (i = 0; i < check_len; i += pgsize) {
+                cond_resched();
+                bytes = bits = 0;
+                first = countdiffs(written, read, i, pgsize, &bytes,
+                                   &bits);
+                if (first < 0)
+                        continue;
+
+                printk("-------------------------------------------------------"
+                       "----------------------------------\n");
+
+                printk(PRINT_PREF "Page %zd has %d bytes/%d bits failing verify,"
+                       " starting at offset 0x%x\n",
+                       (mtd->erasesize - check_len + i) / pgsize,
+                       bytes, bits, first);
+
+                offset = first & ~0x7;
+                len = ((first + bytes) | 0x7) + 1 - offset;
+
+                print_bufs(read, written, offset, len);
+        }
+}
+
+static void print_bufs(unsigned char *read, unsigned char *written, int start,
+                       int len)
+{
+        int i = 0, j1, j2;
+        char *diff;
+
+        printk("Offset       Read                          Written\n");
+        while (i < len) {
+                printk("0x%08x: ", start + i);
+                diff = "   ";
+                for (j1 = 0; j1 < 8 && i + j1 < len; j1++) {
+                        printk(" %02x", read[start + i + j1]);
+                        if (read[start + i + j1] != written[start + i + j1])
+                                diff = "***";
+                }
+
+                while (j1 < 8) {
+                        printk(" ");
+                        j1 += 1;
+                }
+
+                printk("  %s ", diff);
+
+                for (j2 = 0; j2 < 8 && i + j2 < len; j2++)
+                        printk(" %02x", written[start + i + j2]);
+                printk("\n");
+                i += 8;
+        }
+}
+
+/*
+ * Count the number of differing bytes and bits and return the first differing
+ * offset.
+ */
+static int countdiffs(unsigned char *buf, unsigned char *check_buf,
+                      unsigned offset, unsigned len, unsigned *bytesp,
+                      unsigned *bitsp)
+{
+        unsigned i, bit;
+        int first = -1;
+
+        for (i = offset; i < offset + len; i++)
+                if (buf[i] != check_buf[i]) {
+                        first = i;
+                        break;
+                }
+
+        while (i < offset + len) {
+                if (buf[i] != check_buf[i]) {
+                        (*bytesp)++;
+                        bit = 1;
+                        while (bit < 256) {
+                                if ((buf[i] & bit) != (check_buf[i] & bit))
+                                        (*bitsp)++;
+                                bit <<= 1;
+                        }
+                }
+                i++;
+        }
+
+        return first;
+}
+
+MODULE_DESCRIPTION("Eraseblock torturing module");
+MODULE_AUTHOR("Artem Bityutskiy, Jarkko Lavinen, Adrian Hunter");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 7caf22cd5ad0..9082768cc6c3 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -561,7 +561,7 @@ static int io_init(struct ubi_device *ubi)
          */
 
         ubi->peb_size   = ubi->mtd->erasesize;
-        ubi->peb_count  = ubi->mtd->size / ubi->mtd->erasesize;
+        ubi->peb_count  = mtd_div_by_eb(ubi->mtd->size, ubi->mtd);
         ubi->flash_size = ubi->mtd->size;
 
         if (ubi->mtd->block_isbad && ubi->mtd->block_markbad)
diff --git a/drivers/mtd/ubi/gluebi.c b/drivers/mtd/ubi/gluebi.c
index 605812bb0b1a..6dd4f5e77f82 100644
--- a/drivers/mtd/ubi/gluebi.c
+++ b/drivers/mtd/ubi/gluebi.c
@@ -215,7 +215,8 @@ static int gluebi_erase(struct mtd_info *mtd, struct erase_info *instr)
         struct ubi_volume *vol;
         struct ubi_device *ubi;
 
-        dbg_gen("erase %u bytes at offset %u", instr->len, instr->addr);
+        dbg_gen("erase %llu bytes at offset %llu", (unsigned long long)instr->len,
+                 (unsigned long long)instr->addr);
 
         if (instr->addr < 0 || instr->addr > mtd->size - mtd->erasesize)
                 return -EINVAL;
@@ -223,11 +224,11 @@ static int gluebi_erase(struct mtd_info *mtd, struct erase_info *instr)
         if (instr->len < 0 || instr->addr + instr->len > mtd->size)
                 return -EINVAL;
 
-        if (instr->addr % mtd->writesize || instr->len % mtd->writesize)
+        if (mtd_mod_by_ws(instr->addr, mtd) || mtd_mod_by_ws(instr->len, mtd))
                 return -EINVAL;
 
-        lnum = instr->addr / mtd->erasesize;
-        count = instr->len / mtd->erasesize;
+        lnum = mtd_div_by_eb(instr->addr, mtd);
+        count = mtd_div_by_eb(instr->len, mtd);
 
         vol = container_of(mtd, struct ubi_volume, gluebi_mtd);
         ubi = vol->ubi;
@@ -255,7 +256,7 @@ static int gluebi_erase(struct mtd_info *mtd, struct erase_info *instr)
 
 out_err:
         instr->state = MTD_ERASE_FAILED;
-        instr->fail_addr = lnum * mtd->erasesize;
+        instr->fail_addr = (long long)lnum * mtd->erasesize;
         return err;
 }
 
@@ -294,7 +295,7 @@ int ubi_create_gluebi(struct ubi_device *ubi, struct ubi_volume *vol)
          * bytes.
          */
         if (vol->vol_type == UBI_DYNAMIC_VOLUME)
-                mtd->size = vol->usable_leb_size * vol->reserved_pebs;
+                mtd->size = (long long)vol->usable_leb_size * vol->reserved_pebs;
         else
                 mtd->size = vol->used_bytes;
 
@@ -304,8 +305,8 @@ int ubi_create_gluebi(struct ubi_device *ubi, struct ubi_volume *vol)
                 return -ENFILE;
         }
 
-        dbg_gen("added mtd%d (\"%s\"), size %u, EB size %u",
-                mtd->index, mtd->name, mtd->size, mtd->erasesize);
+        dbg_gen("added mtd%d (\"%s\"), size %llu, EB size %u",
+                mtd->index, mtd->name, (unsigned long long)mtd->size, mtd->erasesize);
         return 0;
 }
 
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index 65e8294a9e29..9da5a4b81133 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -1,11 +1,12 @@
 /**
  * @file buffer_sync.c
  *
- * @remark Copyright 2002 OProfile authors
+ * @remark Copyright 2002-2009 OProfile authors
  * @remark Read the file COPYING
  *
  * @author John Levon <levon@movementarian.org>
  * @author Barry Kasindorf
+ * @author Robert Richter <robert.richter@amd.com>
  *
  * This is the core of the buffer management. Each
  * CPU buffer is processed and entered into the
@@ -315,88 +316,73 @@ static void add_trace_begin(void)
         add_event_entry(TRACE_BEGIN_CODE);
 }
 
-#ifdef CONFIG_OPROFILE_IBS
-
-#define IBS_FETCH_CODE_SIZE     2
-#define IBS_OP_CODE_SIZE        5
-
-/*
- * Add IBS fetch and op entries to event buffer
- */
-static void add_ibs_begin(int cpu, int code, struct mm_struct *mm)
+static void add_data(struct op_entry *entry, struct mm_struct *mm)
 {
-        unsigned long rip;
-        int i, count;
-        unsigned long ibs_cookie = 0;
+        unsigned long code, pc, val;
+        unsigned long cookie;
         off_t offset;
-        struct op_sample *sample;
-
-        sample = cpu_buffer_read_entry(cpu);
-        if (!sample)
-                goto Error;
-        rip = sample->eip;
 
-#ifdef __LP64__
-        rip += sample->event << 32;
-#endif
+        if (!op_cpu_buffer_get_data(entry, &code))
+                return;
+        if (!op_cpu_buffer_get_data(entry, &pc))
+                return;
+        if (!op_cpu_buffer_get_size(entry))
+                return;
 
         if (mm) {
-                ibs_cookie = lookup_dcookie(mm, rip, &offset);
+                cookie = lookup_dcookie(mm, pc, &offset);
 
-                if (ibs_cookie == NO_COOKIE)
-                        offset = rip;
-                if (ibs_cookie == INVALID_COOKIE) {
+                if (cookie == NO_COOKIE)
+                        offset = pc;
+                if (cookie == INVALID_COOKIE) {
                         atomic_inc(&oprofile_stats.sample_lost_no_mapping);
-                        offset = rip;
+                        offset = pc;
                 }
-                if (ibs_cookie != last_cookie) {
-                        add_cookie_switch(ibs_cookie);
-                        last_cookie = ibs_cookie;
+                if (cookie != last_cookie) {
+                        add_cookie_switch(cookie);
+                        last_cookie = cookie;
                 }
         } else
-                offset = rip;
+                offset = pc;
 
         add_event_entry(ESCAPE_CODE);
         add_event_entry(code);
         add_event_entry(offset);        /* Offset from Dcookie */
 
-        /* we send the Dcookie offset, but send the raw Linear Add also*/
-        add_event_entry(sample->eip);
-        add_event_entry(sample->event);
-
-        if (code == IBS_FETCH_CODE)
-                count = IBS_FETCH_CODE_SIZE;    /*IBS FETCH is 2 int64s*/
-        else
-                count = IBS_OP_CODE_SIZE;       /*IBS OP is 5 int64s*/
-
-        for (i = 0; i < count; i++) {
-                sample = cpu_buffer_read_entry(cpu);
-                if (!sample)
-                        goto Error;
-                add_event_entry(sample->eip);
-                add_event_entry(sample->event);
-        }
-
-        return;
-
-Error:
-        return;
+        while (op_cpu_buffer_get_data(entry, &val))
+                add_event_entry(val);
 }
 
-#endif
-
-static void add_sample_entry(unsigned long offset, unsigned long event)
+static inline void add_sample_entry(unsigned long offset, unsigned long event)
 {
         add_event_entry(offset);
         add_event_entry(event);
 }
 
 
-static int add_us_sample(struct mm_struct *mm, struct op_sample *s)
+/*
+ * Add a sample to the global event buffer. If possible the
+ * sample is converted into a persistent dentry/offset pair
+ * for later lookup from userspace. Return 0 on failure.
+ */
+static int
+add_sample(struct mm_struct *mm, struct op_sample *s, int in_kernel)
 {
         unsigned long cookie;
         off_t offset;
 
+        if (in_kernel) {
+                add_sample_entry(s->eip, s->event);
+                return 1;
+        }
+
+        /* add userspace sample */
+
+        if (!mm) {
+                atomic_inc(&oprofile_stats.sample_lost_no_mm);
+                return 0;
+        }
+
         cookie = lookup_dcookie(mm, s->eip, &offset);
 
         if (cookie == INVALID_COOKIE) {
@@ -415,25 +401,6 @@ static int add_us_sample(struct mm_struct *mm, struct op_sample *s)
 }
 
 
-/* Add a sample to the global event buffer. If possible the
- * sample is converted into a persistent dentry/offset pair
- * for later lookup from userspace.
- */
-static int
-add_sample(struct mm_struct *mm, struct op_sample *s, int in_kernel)
-{
-        if (in_kernel) {
-                add_sample_entry(s->eip, s->event);
-                return 1;
-        } else if (mm) {
-                return add_us_sample(mm, s);
-        } else {
-                atomic_inc(&oprofile_stats.sample_lost_no_mm);
-        }
-        return 0;
-}
-
-
 static void release_mm(struct mm_struct *mm)
 {
         if (!mm)
@@ -526,66 +493,69 @@ void sync_buffer(int cpu)
 {
         struct mm_struct *mm = NULL;
         struct mm_struct *oldmm;
+        unsigned long val;
         struct task_struct *new;
         unsigned long cookie = 0;
         int in_kernel = 1;
         sync_buffer_state state = sb_buffer_start;
         unsigned int i;
         unsigned long available;
+        unsigned long flags;
+        struct op_entry entry;
+        struct op_sample *sample;
 
         mutex_lock(&buffer_mutex);
 
         add_cpu_switch(cpu);
 
-        cpu_buffer_reset(cpu);
-        available = cpu_buffer_entries(cpu);
+        op_cpu_buffer_reset(cpu);
+        available = op_cpu_buffer_entries(cpu);
 
         for (i = 0; i < available; ++i) {
-                struct op_sample *s = cpu_buffer_read_entry(cpu);
-                if (!s)
+                sample = op_cpu_buffer_read_entry(&entry, cpu);
+                if (!sample)
                         break;
 
-                if (is_code(s->eip)) {
-                        switch (s->event) {
-                        case 0:
-                        case CPU_IS_KERNEL:
+                if (is_code(sample->eip)) {
+                        flags = sample->event;
+                        if (flags & TRACE_BEGIN) {
+                                state = sb_bt_start;
+                                add_trace_begin();
+                        }
+                        if (flags & KERNEL_CTX_SWITCH) {
                                 /* kernel/userspace switch */
-                                in_kernel = s->event;
+                                in_kernel = flags & IS_KERNEL;
                                 if (state == sb_buffer_start)
                                         state = sb_sample_start;
-                                add_kernel_ctx_switch(s->event);
-                                break;
-                        case CPU_TRACE_BEGIN:
-                                state = sb_bt_start;
-                                add_trace_begin();
-                                break;
-#ifdef CONFIG_OPROFILE_IBS
-                        case IBS_FETCH_BEGIN:
-                                state = sb_bt_start;
-                                add_ibs_begin(cpu, IBS_FETCH_CODE, mm);
-                                break;
-                        case IBS_OP_BEGIN:
-                                state = sb_bt_start;
-                                add_ibs_begin(cpu, IBS_OP_CODE, mm);
-                                break;
-#endif
-                        default:
+                                add_kernel_ctx_switch(flags & IS_KERNEL);
+                        }
+                        if (flags & USER_CTX_SWITCH
+                            && op_cpu_buffer_get_data(&entry, &val)) {
                                 /* userspace context switch */
+                                new = (struct task_struct *)val;
                                 oldmm = mm;
-                                new = (struct task_struct *)s->event;
                                 release_mm(oldmm);
                                 mm = take_tasks_mm(new);
                                 if (mm != oldmm)
                                         cookie = get_exec_dcookie(mm);
                                 add_user_ctx_switch(new, cookie);
-                                break;
-                        }
-                } else if (state >= sb_bt_start &&
-                           !add_sample(mm, s, in_kernel)) {
-                        if (state == sb_bt_start) {
-                                state = sb_bt_ignore;
-                                atomic_inc(&oprofile_stats.bt_lost_no_mapping);
                         }
+                        if (op_cpu_buffer_get_size(&entry))
+                                add_data(&entry, mm);
+                        continue;
+                }
+
+                if (state < sb_bt_start)
+                        /* ignore sample */
+                        continue;
+
+                if (add_sample(mm, sample, in_kernel))
+                        continue;
+
+                /* ignore backtraces if failed to add a sample */
+                if (state == sb_bt_start) {
+                        state = sb_bt_ignore;
+                        atomic_inc(&oprofile_stats.bt_lost_no_mapping);
                 }
         }
         release_mm(mm);
diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c
index 61090969158f..2e03b6d796d3 100644
--- a/drivers/oprofile/cpu_buffer.c
+++ b/drivers/oprofile/cpu_buffer.c
@@ -1,11 +1,12 @@
 /**
  * @file cpu_buffer.c
  *
- * @remark Copyright 2002 OProfile authors
+ * @remark Copyright 2002-2009 OProfile authors
  * @remark Read the file COPYING
  *
  * @author John Levon <levon@movementarian.org>
  * @author Barry Kasindorf <barry.kasindorf@amd.com>
+ * @author Robert Richter <robert.richter@amd.com>
  *
  * Each CPU has a local buffer that stores PC value/event
  * pairs. We also log context switches when we notice them.
@@ -45,8 +46,8 @@
  * can be changed to a single buffer solution when the ring buffer
  * access is implemented as non-locking atomic code.
  */
-struct ring_buffer *op_ring_buffer_read;
-struct ring_buffer *op_ring_buffer_write;
+static struct ring_buffer *op_ring_buffer_read;
+static struct ring_buffer *op_ring_buffer_write;
 DEFINE_PER_CPU(struct oprofile_cpu_buffer, cpu_buffer);
 
 static void wq_sync_buffer(struct work_struct *work);
@@ -54,19 +55,9 @@ static void wq_sync_buffer(struct work_struct *work);
 #define DEFAULT_TIMER_EXPIRE (HZ / 10)
 static int work_enabled;
 
-void free_cpu_buffers(void)
-{
-        if (op_ring_buffer_read)
-                ring_buffer_free(op_ring_buffer_read);
-        op_ring_buffer_read = NULL;
-        if (op_ring_buffer_write)
-                ring_buffer_free(op_ring_buffer_write);
-        op_ring_buffer_write = NULL;
-}
-
 unsigned long oprofile_get_cpu_buffer_size(void)
 {
-        return fs_cpu_buffer_size;
+        return oprofile_cpu_buffer_size;
 }
 
 void oprofile_cpu_buffer_inc_smpl_lost(void)
@@ -77,11 +68,21 @@ void oprofile_cpu_buffer_inc_smpl_lost(void)
         cpu_buf->sample_lost_overflow++;
 }
 
+void free_cpu_buffers(void)
+{
+        if (op_ring_buffer_read)
+                ring_buffer_free(op_ring_buffer_read);
+        op_ring_buffer_read = NULL;
+        if (op_ring_buffer_write)
+                ring_buffer_free(op_ring_buffer_write);
+        op_ring_buffer_write = NULL;
+}
+
 int alloc_cpu_buffers(void)
 {
         int i;
 
-        unsigned long buffer_size = fs_cpu_buffer_size;
+        unsigned long buffer_size = oprofile_cpu_buffer_size;
 
         op_ring_buffer_read = ring_buffer_alloc(buffer_size, OP_BUFFER_FLAGS);
         if (!op_ring_buffer_read)
@@ -97,8 +98,6 @@ int alloc_cpu_buffers(void)
                 b->last_is_kernel = -1;
                 b->tracing = 0;
                 b->buffer_size = buffer_size;
-                b->tail_pos = 0;
-                b->head_pos = 0;
                 b->sample_received = 0;
                 b->sample_lost_overflow = 0;
                 b->backtrace_aborted = 0;
@@ -145,47 +144,156 @@ void end_cpu_work(void)
         flush_scheduled_work();
 }
 
-static inline int
-add_sample(struct oprofile_cpu_buffer *cpu_buf,
-           unsigned long pc, unsigned long event)
+/*
+ * This function prepares the cpu buffer to write a sample.
+ *
+ * Struct op_entry is used during operations on the ring buffer while
+ * struct op_sample contains the data that is stored in the ring
+ * buffer. Struct entry can be uninitialized. The function reserves a
+ * data array that is specified by size. Use
+ * op_cpu_buffer_write_commit() after preparing the sample. In case of
+ * errors a null pointer is returned, otherwise the pointer to the
+ * sample.
+ *
+ */
+struct op_sample
+*op_cpu_buffer_write_reserve(struct op_entry *entry, unsigned long size)
+{
+        entry->event = ring_buffer_lock_reserve
+                (op_ring_buffer_write, sizeof(struct op_sample) +
+                 size * sizeof(entry->sample->data[0]), &entry->irq_flags);
+        if (entry->event)
+                entry->sample = ring_buffer_event_data(entry->event);
+        else
+                entry->sample = NULL;
+
+        if (!entry->sample)
+                return NULL;
+
+        entry->size = size;
+        entry->data = entry->sample->data;
+
+        return entry->sample;
+}
+
+int op_cpu_buffer_write_commit(struct op_entry *entry)
+{
+        return ring_buffer_unlock_commit(op_ring_buffer_write, entry->event,
+                                         entry->irq_flags);
+}
+
+struct op_sample *op_cpu_buffer_read_entry(struct op_entry *entry, int cpu)
+{
+        struct ring_buffer_event *e;
+        e = ring_buffer_consume(op_ring_buffer_read, cpu, NULL);
+        if (e)
+                goto event;
+        if (ring_buffer_swap_cpu(op_ring_buffer_read,
+                                 op_ring_buffer_write,
+                                 cpu))
+                return NULL;
+        e = ring_buffer_consume(op_ring_buffer_read, cpu, NULL);
+        if (e)
+                goto event;
+        return NULL;
+
+event:
+        entry->event = e;
+        entry->sample = ring_buffer_event_data(e);
+        entry->size = (ring_buffer_event_length(e) - sizeof(struct op_sample))
+                / sizeof(entry->sample->data[0]);
+        entry->data = entry->sample->data;
+        return entry->sample;
+}
+
+unsigned long op_cpu_buffer_entries(int cpu)
+{
+        return ring_buffer_entries_cpu(op_ring_buffer_read, cpu)
+                + ring_buffer_entries_cpu(op_ring_buffer_write, cpu);
+}
+
+static int
+op_add_code(struct oprofile_cpu_buffer *cpu_buf, unsigned long backtrace,
+            int is_kernel, struct task_struct *task)
 {
         struct op_entry entry;
-        int ret;
+        struct op_sample *sample;
+        unsigned long flags;
+        int size;
+
+        flags = 0;
+
+        if (backtrace)
+                flags |= TRACE_BEGIN;
+
+        /* notice a switch from user->kernel or vice versa */
+        is_kernel = !!is_kernel;
+        if (cpu_buf->last_is_kernel != is_kernel) {
+                cpu_buf->last_is_kernel = is_kernel;
+                flags |= KERNEL_CTX_SWITCH;
+                if (is_kernel)
+                        flags |= IS_KERNEL;
+        }
+
+        /* notice a task switch */
+        if (cpu_buf->last_task != task) {
+                cpu_buf->last_task = task;
+                flags |= USER_CTX_SWITCH;
+        }
+
+        if (!flags)
+                /* nothing to do */
+                return 0;
+
+        if (flags & USER_CTX_SWITCH)
+                size = 1;
+        else
+                size = 0;
+
+        sample = op_cpu_buffer_write_reserve(&entry, size);
+        if (!sample)
+                return -ENOMEM;
 
-        ret = cpu_buffer_write_entry(&entry);
-        if (ret)
-                return ret;
+        sample->eip = ESCAPE_CODE;
+        sample->event = flags;
 
-        entry.sample->eip = pc;
-        entry.sample->event = event;
+        if (size)
+                op_cpu_buffer_add_data(&entry, (unsigned long)task);
 
-        ret = cpu_buffer_write_commit(&entry);
-        if (ret)
-                return ret;
+        op_cpu_buffer_write_commit(&entry);
 
         return 0;
 }
 
 static inline int
-add_code(struct oprofile_cpu_buffer *buffer, unsigned long value)
+op_add_sample(struct oprofile_cpu_buffer *cpu_buf,
+              unsigned long pc, unsigned long event)
 {
-        return add_sample(buffer, ESCAPE_CODE, value);
+        struct op_entry entry;
+        struct op_sample *sample;
+
+        sample = op_cpu_buffer_write_reserve(&entry, 0);
+        if (!sample)
+                return -ENOMEM;
+
+        sample->eip = pc;
+        sample->event = event;
+
+        return op_cpu_buffer_write_commit(&entry);
 }
 
-/* This must be safe from any context. It's safe writing here
- * because of the head/tail separation of the writer and reader
- * of the CPU buffer.
+/*
+ * This must be safe from any context.
  *
  * is_kernel is needed because on some architectures you cannot
  * tell if you are in kernel or user space simply by looking at
  * pc. We tag this in the buffer by generating kernel enter/exit
  * events whenever is_kernel changes
  */
-static int log_sample(struct oprofile_cpu_buffer *cpu_buf, unsigned long pc,
-                      int is_kernel, unsigned long event)
+static int
+log_sample(struct oprofile_cpu_buffer *cpu_buf, unsigned long pc,
+           unsigned long backtrace, int is_kernel, unsigned long event)
 {
-        struct task_struct *task;
-
         cpu_buf->sample_received++;
 
         if (pc == ESCAPE_CODE) {
@@ -193,25 +301,10 @@ static int log_sample(struct oprofile_cpu_buffer *cpu_buf, unsigned long pc,
                 return 0;
         }
 
-        is_kernel = !!is_kernel;
-
-        task = current;
-
-        /* notice a switch from user->kernel or vice versa */
-        if (cpu_buf->last_is_kernel != is_kernel) {
-                cpu_buf->last_is_kernel = is_kernel;
-                if (add_code(cpu_buf, is_kernel))
-                        goto fail;
-        }
-
-        /* notice a task switch */
-        if (cpu_buf->last_task != task) {
-                cpu_buf->last_task = task;
-                if (add_code(cpu_buf, (unsigned long)task))
-                        goto fail;
-        }
+        if (op_add_code(cpu_buf, backtrace, is_kernel, current))
+                goto fail;
 
-        if (add_sample(cpu_buf, pc, event))
+        if (op_add_sample(cpu_buf, pc, event))
                 goto fail;
 
         return 1;
@@ -221,109 +314,102 @@ fail:
         return 0;
 }
 
-static int oprofile_begin_trace(struct oprofile_cpu_buffer *cpu_buf)
+static inline void oprofile_begin_trace(struct oprofile_cpu_buffer *cpu_buf)
 {
-        add_code(cpu_buf, CPU_TRACE_BEGIN);
         cpu_buf->tracing = 1;
-        return 1;
 }
 
-static void oprofile_end_trace(struct oprofile_cpu_buffer *cpu_buf)
+static inline void oprofile_end_trace(struct oprofile_cpu_buffer *cpu_buf)
 {
         cpu_buf->tracing = 0;
 }
 
-void oprofile_add_ext_sample(unsigned long pc, struct pt_regs * const regs,
-                                unsigned long event, int is_kernel)
+static inline void
+__oprofile_add_ext_sample(unsigned long pc, struct pt_regs * const regs,
+                          unsigned long event, int is_kernel)
 {
         struct oprofile_cpu_buffer *cpu_buf = &__get_cpu_var(cpu_buffer);
-
-        if (!backtrace_depth) {
-                log_sample(cpu_buf, pc, is_kernel, event);
-                return;
-        }
-
-        if (!oprofile_begin_trace(cpu_buf))
-                return;
+        unsigned long backtrace = oprofile_backtrace_depth;
 
         /*
          * if log_sample() fail we can't backtrace since we lost the
          * source of this event
          */
-        if (log_sample(cpu_buf, pc, is_kernel, event))
-                oprofile_ops.backtrace(regs, backtrace_depth);
+        if (!log_sample(cpu_buf, pc, backtrace, is_kernel, event))
+                /* failed */
+                return;
+
+        if (!backtrace)
+                return;
+
+        oprofile_begin_trace(cpu_buf);
+        oprofile_ops.backtrace(regs, backtrace);
         oprofile_end_trace(cpu_buf);
 }
 
+void oprofile_add_ext_sample(unsigned long pc, struct pt_regs * const regs,
+                             unsigned long event, int is_kernel)
+{
+        __oprofile_add_ext_sample(pc, regs, event, is_kernel);
+}
+
 void oprofile_add_sample(struct pt_regs * const regs, unsigned long event)
 {
         int is_kernel = !user_mode(regs);
         unsigned long pc = profile_pc(regs);
 
-        oprofile_add_ext_sample(pc, regs, event, is_kernel);
+        __oprofile_add_ext_sample(pc, regs, event, is_kernel);
 }
 
-#ifdef CONFIG_OPROFILE_IBS
-
-#define MAX_IBS_SAMPLE_SIZE 14
-
-void oprofile_add_ibs_sample(struct pt_regs * const regs,
-                             unsigned int * const ibs_sample, int ibs_code)
+/*
+ * Add samples with data to the ring buffer.
+ *
+ * Use oprofile_add_data(&entry, val) to add data and
+ * oprofile_write_commit(&entry) to commit the sample.
+ */
+void
+oprofile_write_reserve(struct op_entry *entry, struct pt_regs * const regs,
+                       unsigned long pc, int code, int size)
 {
+        struct op_sample *sample;
         int is_kernel = !user_mode(regs);
         struct oprofile_cpu_buffer *cpu_buf = &__get_cpu_var(cpu_buffer);
-        struct task_struct *task;
-        int fail = 0;
 
         cpu_buf->sample_received++;
 
-        /* notice a switch from user->kernel or vice versa */
-        if (cpu_buf->last_is_kernel != is_kernel) {
-                if (add_code(cpu_buf, is_kernel))
-                        goto fail;
-                cpu_buf->last_is_kernel = is_kernel;
-        }
-
-        /* notice a task switch */
-        if (!is_kernel) {
-                task = current;
-                if (cpu_buf->last_task != task) {
-                        if (add_code(cpu_buf, (unsigned long)task))
-                                goto fail;
-                        cpu_buf->last_task = task;
-                }
-        }
-
-        fail = fail || add_code(cpu_buf, ibs_code);
-        fail = fail || add_sample(cpu_buf, ibs_sample[0], ibs_sample[1]);
-        fail = fail || add_sample(cpu_buf, ibs_sample[2], ibs_sample[3]);
-        fail = fail || add_sample(cpu_buf, ibs_sample[4], ibs_sample[5]);
-
-        if (ibs_code == IBS_OP_BEGIN) {
-                fail = fail || add_sample(cpu_buf, ibs_sample[6], ibs_sample[7]);
-                fail = fail || add_sample(cpu_buf, ibs_sample[8], ibs_sample[9]);
-                fail = fail || add_sample(cpu_buf, ibs_sample[10], ibs_sample[11]);
-        }
+        /* no backtraces for samples with data */
+        if (op_add_code(cpu_buf, 0, is_kernel, current))
+                goto fail;
 
-        if (fail)
+        sample = op_cpu_buffer_write_reserve(entry, size + 2);
+        if (!sample)
                 goto fail;
+        sample->eip = ESCAPE_CODE;
+        sample->event = 0;              /* no flags */
 
-        if (backtrace_depth)
-                oprofile_ops.backtrace(regs, backtrace_depth);
+        op_cpu_buffer_add_data(entry, code);
+        op_cpu_buffer_add_data(entry, pc);
 
         return;
 
 fail:
         cpu_buf->sample_lost_overflow++;
-        return;
 }
 
-#endif
+int oprofile_add_data(struct op_entry *entry, unsigned long val)
+{
+        return op_cpu_buffer_add_data(entry, val);
+}
+
+int oprofile_write_commit(struct op_entry *entry)
+{
+        return op_cpu_buffer_write_commit(entry);
+}
 
 void oprofile_add_pc(unsigned long pc, int is_kernel, unsigned long event)
 {
         struct oprofile_cpu_buffer *cpu_buf = &__get_cpu_var(cpu_buffer);
-        log_sample(cpu_buf, pc, is_kernel, event);
+        log_sample(cpu_buf, pc, 0, is_kernel, event);
 }
 
 void oprofile_add_trace(unsigned long pc)
@@ -340,7 +426,7 @@ void oprofile_add_trace(unsigned long pc)
         if (pc == ESCAPE_CODE)
                 goto fail;
 
-        if (add_sample(cpu_buf, pc, 0))
+        if (op_add_sample(cpu_buf, pc, 0))
                 goto fail;
 
         return;
diff --git a/drivers/oprofile/cpu_buffer.h b/drivers/oprofile/cpu_buffer.h
index aacb0f0bc566..63f81c44846a 100644
--- a/drivers/oprofile/cpu_buffer.h
+++ b/drivers/oprofile/cpu_buffer.h
@@ -1,10 +1,11 @@
 /**
  * @file cpu_buffer.h
  *
- * @remark Copyright 2002 OProfile authors
+ * @remark Copyright 2002-2009 OProfile authors
  * @remark Read the file COPYING
  *
  * @author John Levon <levon@movementarian.org>
+ * @author Robert Richter <robert.richter@amd.com>
  */
 
 #ifndef OPROFILE_CPU_BUFFER_H
@@ -31,17 +32,12 @@ void end_cpu_work(void);
 struct op_sample {
         unsigned long eip;
         unsigned long event;
+        unsigned long data[0];
 };
 
-struct op_entry {
-        struct ring_buffer_event *event;
-        struct op_sample *sample;
-        unsigned long irq_flags;
-};
+struct op_entry;
 
 struct oprofile_cpu_buffer {
-        volatile unsigned long head_pos;
-        volatile unsigned long tail_pos;
         unsigned long buffer_size;
         struct task_struct *last_task;
         int last_is_kernel;
@@ -54,8 +50,6 @@ struct oprofile_cpu_buffer {
         struct delayed_work work;
 };
 
-extern struct ring_buffer *op_ring_buffer_read;
-extern struct ring_buffer *op_ring_buffer_write;
 DECLARE_PER_CPU(struct oprofile_cpu_buffer, cpu_buffer);
 
 /*
@@ -64,7 +58,7 @@ DECLARE_PER_CPU(struct oprofile_cpu_buffer, cpu_buffer);
  * reset these to invalid values; the next sample collected will
  * populate the buffer with proper values to initialize the buffer
  */
-static inline void cpu_buffer_reset(int cpu)
+static inline void op_cpu_buffer_reset(int cpu)
 {
         struct oprofile_cpu_buffer *cpu_buf = &per_cpu(cpu_buffer, cpu);
 
@@ -72,55 +66,48 @@ static inline void cpu_buffer_reset(int cpu)
         cpu_buf->last_task = NULL;
 }
 
-static inline int cpu_buffer_write_entry(struct op_entry *entry)
-{
-        entry->event = ring_buffer_lock_reserve(op_ring_buffer_write,
-                                                sizeof(struct op_sample),
-                                                &entry->irq_flags);
-        if (entry->event)
-                entry->sample = ring_buffer_event_data(entry->event);
-        else
-                entry->sample = NULL;
-
-        if (!entry->sample)
-                return -ENOMEM;
-
-        return 0;
-}
+struct op_sample
+*op_cpu_buffer_write_reserve(struct op_entry *entry, unsigned long size);
+int op_cpu_buffer_write_commit(struct op_entry *entry);
+struct op_sample *op_cpu_buffer_read_entry(struct op_entry *entry, int cpu);
+unsigned long op_cpu_buffer_entries(int cpu);
 
-static inline int cpu_buffer_write_commit(struct op_entry *entry)
+/* returns the remaining free size of data in the entry */
+static inline
+int op_cpu_buffer_add_data(struct op_entry *entry, unsigned long val)
 {
-        return ring_buffer_unlock_commit(op_ring_buffer_write, entry->event,
-                                         entry->irq_flags);
+        if (!entry->size)
+                return 0;
+        *entry->data = val;
+        entry->size--;
+        entry->data++;
+        return entry->size;
 }
 
-static inline struct op_sample *cpu_buffer_read_entry(int cpu)
+/* returns the size of data in the entry */
+static inline
+int op_cpu_buffer_get_size(struct op_entry *entry)
 {
-        struct ring_buffer_event *e;
-        e = ring_buffer_consume(op_ring_buffer_read, cpu, NULL);
-        if (e)
-                return ring_buffer_event_data(e);
-        if (ring_buffer_swap_cpu(op_ring_buffer_read,
-                                 op_ring_buffer_write,
-                                 cpu))
-                return NULL;
-        e = ring_buffer_consume(op_ring_buffer_read, cpu, NULL);
-        if (e)
-                return ring_buffer_event_data(e);
-        return NULL;
+        return entry->size;
 }
 
-/* "acquire" as many cpu buffer slots as we can */
-static inline unsigned long cpu_buffer_entries(int cpu)
+/* returns 0 if empty or the size of data including the current value */
+static inline
+int op_cpu_buffer_get_data(struct op_entry *entry, unsigned long *val)
 {
-        return ring_buffer_entries_cpu(op_ring_buffer_read, cpu)
-                + ring_buffer_entries_cpu(op_ring_buffer_write, cpu);
+        int size = entry->size;
+        if (!size)
+                return 0;
+        *val = *entry->data;
+        entry->size--;
+        entry->data++;
+        return size;
 }
 
-/* transient events for the CPU buffer -> event buffer */
-#define CPU_IS_KERNEL 1
-#define CPU_TRACE_BEGIN 2
-#define IBS_FETCH_BEGIN 3
-#define IBS_OP_BEGIN    4
+/* extra data flags */
+#define KERNEL_CTX_SWITCH       (1UL << 0)
+#define IS_KERNEL               (1UL << 1)
+#define TRACE_BEGIN             (1UL << 2)
+#define USER_CTX_SWITCH         (1UL << 3)
 
 #endif /* OPROFILE_CPU_BUFFER_H */
diff --git a/drivers/oprofile/event_buffer.c b/drivers/oprofile/event_buffer.c
index 191a3202cecc..2b7ae366ceb1 100644
--- a/drivers/oprofile/event_buffer.c
+++ b/drivers/oprofile/event_buffer.c
@@ -73,8 +73,8 @@ int alloc_event_buffer(void)
         unsigned long flags;
 
         spin_lock_irqsave(&oprofilefs_lock, flags);
-        buffer_size = fs_buffer_size;
-        buffer_watershed = fs_buffer_watershed;
+        buffer_size = oprofile_buffer_size;
+        buffer_watershed = oprofile_buffer_watershed;
         spin_unlock_irqrestore(&oprofilefs_lock, flags);
 
         if (buffer_watershed >= buffer_size)
diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c
index cd375907f26f..3cffce90f82a 100644
--- a/drivers/oprofile/oprof.c
+++ b/drivers/oprofile/oprof.c
@@ -23,7 +23,7 @@
 struct oprofile_operations oprofile_ops;
 
 unsigned long oprofile_started;
-unsigned long backtrace_depth;
+unsigned long oprofile_backtrace_depth;
 static unsigned long is_setup;
 static DEFINE_MUTEX(start_mutex);
 
@@ -172,7 +172,7 @@ int oprofile_set_backtrace(unsigned long val)
                 goto out;
         }
 
-        backtrace_depth = val;
+        oprofile_backtrace_depth = val;
 
 out:
         mutex_unlock(&start_mutex);
diff --git a/drivers/oprofile/oprof.h b/drivers/oprofile/oprof.h
index 5df0c21a608f..c288d3c24b50 100644
--- a/drivers/oprofile/oprof.h
+++ b/drivers/oprofile/oprof.h
@@ -21,12 +21,12 @@ void oprofile_stop(void);
 
 struct oprofile_operations;
 
-extern unsigned long fs_buffer_size;
-extern unsigned long fs_cpu_buffer_size;
-extern unsigned long fs_buffer_watershed;
+extern unsigned long oprofile_buffer_size;
+extern unsigned long oprofile_cpu_buffer_size;
+extern unsigned long oprofile_buffer_watershed;
 extern struct oprofile_operations oprofile_ops;
 extern unsigned long oprofile_started;
-extern unsigned long backtrace_depth;
+extern unsigned long oprofile_backtrace_depth;
 
 struct super_block;
 struct dentry;
diff --git a/drivers/oprofile/oprofile_files.c b/drivers/oprofile/oprofile_files.c
index d8201998b0b7..5d36ffc30dd5 100644
--- a/drivers/oprofile/oprofile_files.c
+++ b/drivers/oprofile/oprofile_files.c
@@ -14,17 +14,18 @@
 #include "oprofile_stats.h"
 #include "oprof.h"
 
-#define FS_BUFFER_SIZE_DEFAULT          131072
-#define FS_CPU_BUFFER_SIZE_DEFAULT      8192
-#define FS_BUFFER_WATERSHED_DEFAULT     32768   /* FIXME: tune */
+#define BUFFER_SIZE_DEFAULT             131072
+#define CPU_BUFFER_SIZE_DEFAULT         8192
+#define BUFFER_WATERSHED_DEFAULT        32768   /* FIXME: tune */
 
-unsigned long fs_buffer_size;
-unsigned long fs_cpu_buffer_size;
-unsigned long fs_buffer_watershed;
+unsigned long oprofile_buffer_size;
+unsigned long oprofile_cpu_buffer_size;
+unsigned long oprofile_buffer_watershed;
 
 static ssize_t depth_read(struct file *file, char __user *buf, size_t count, loff_t *offset)
 {
-        return oprofilefs_ulong_to_user(backtrace_depth, buf, count, offset);
+        return oprofilefs_ulong_to_user(oprofile_backtrace_depth, buf, count,
+                                        offset);
 }
 
 
@@ -125,16 +126,16 @@ static const struct file_operations dump_fops = {
 void oprofile_create_files(struct super_block *sb, struct dentry *root)
 {
         /* reinitialize default values */
-        fs_buffer_size =        FS_BUFFER_SIZE_DEFAULT;
-        fs_cpu_buffer_size =    FS_CPU_BUFFER_SIZE_DEFAULT;
-        fs_buffer_watershed =   FS_BUFFER_WATERSHED_DEFAULT;
+        oprofile_buffer_size =          BUFFER_SIZE_DEFAULT;
+        oprofile_cpu_buffer_size =      CPU_BUFFER_SIZE_DEFAULT;
+        oprofile_buffer_watershed =     BUFFER_WATERSHED_DEFAULT;
 
         oprofilefs_create_file(sb, root, "enable", &enable_fops);
         oprofilefs_create_file_perm(sb, root, "dump", &dump_fops, 0666);
         oprofilefs_create_file(sb, root, "buffer", &event_buffer_fops);
-        oprofilefs_create_ulong(sb, root, "buffer_size", &fs_buffer_size);
-        oprofilefs_create_ulong(sb, root, "buffer_watershed", &fs_buffer_watershed);
-        oprofilefs_create_ulong(sb, root, "cpu_buffer_size", &fs_cpu_buffer_size);
+        oprofilefs_create_ulong(sb, root, "buffer_size", &oprofile_buffer_size);
+        oprofilefs_create_ulong(sb, root, "buffer_watershed", &oprofile_buffer_watershed);
+        oprofilefs_create_ulong(sb, root, "cpu_buffer_size", &oprofile_cpu_buffer_size);
         oprofilefs_create_file(sb, root, "cpu_type", &cpu_type_fops);
         oprofilefs_create_file(sb, root, "backtrace_depth", &depth_fops);
         oprofilefs_create_file(sb, root, "pointer_size", &pointer_size_fops);
diff --git a/drivers/parisc/asp.c b/drivers/parisc/asp.c
index 821369135369..7931133526c4 100644
--- a/drivers/parisc/asp.c
+++ b/drivers/parisc/asp.c
@@ -71,8 +71,7 @@ static void asp_choose_irq(struct parisc_device *dev, void *ctrl)
  */
 #define ASP_INTERRUPT_ADDR 0xf0800000
 
-int __init
-asp_init_chip(struct parisc_device *dev)
+static int __init asp_init_chip(struct parisc_device *dev)
 {
         struct gsc_irq gsc_irq;
         int ret;
diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
index dcc1e9958d2f..cd4dd7ed2c06 100644
--- a/drivers/parisc/ccio-dma.c
+++ b/drivers/parisc/ccio-dma.c
@@ -555,7 +555,7 @@ static u32 hint_lookup[] = {
  * (Load Coherence Index) instruction.  The 8 bits used for the virtual
  * index are bits 12:19 of the value returned by LCI.
  */ 
-void CCIO_INLINE
+static void CCIO_INLINE
 ccio_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba,
                    unsigned long hints)
 {
@@ -1578,8 +1578,6 @@ static int __init ccio_probe(struct parisc_device *dev)
 
         ioc_count++;
 
-        parisc_vmerge_boundary = IOVP_SIZE;
-        parisc_vmerge_max_size = BITS_PER_LONG * IOVP_SIZE;
         parisc_has_iommu();
         return 0;
 }
diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
index 77cc8bfef8c9..d539d9df88e7 100644
--- a/drivers/parisc/dino.c
+++ b/drivers/parisc/dino.c
@@ -287,7 +287,7 @@ DINO_PORT_OUT(b,  8, 3)
 DINO_PORT_OUT(w, 16, 2)
 DINO_PORT_OUT(l, 32, 0)
 
-struct pci_port_ops dino_port_ops = {
+static struct pci_port_ops dino_port_ops = {
         .inb    = dino_in8,
         .inw    = dino_in16,
         .inl    = dino_in32,
@@ -690,7 +690,7 @@ dino_fixup_bus(struct pci_bus *bus)
 }
 
 
-struct pci_bios_ops dino_bios_ops = {
+static struct pci_bios_ops dino_bios_ops = {
         .init           = dino_bios_init,
         .fixup_bus      = dino_fixup_bus
 };
diff --git a/drivers/parisc/hppb.c b/drivers/parisc/hppb.c
index 65eee67aa2ae..13856415b432 100644
--- a/drivers/parisc/hppb.c
+++ b/drivers/parisc/hppb.c
@@ -29,7 +29,7 @@ struct hppb_card {
         struct hppb_card *next;
 };
 
-struct hppb_card hppb_card_head = {
+static struct hppb_card hppb_card_head = {
         .hpa = 0,
         .next = NULL,
 };
diff --git a/drivers/parisc/lasi.c b/drivers/parisc/lasi.c
index bee510098ce8..e65727ca9fc0 100644
--- a/drivers/parisc/lasi.c
+++ b/drivers/parisc/lasi.c
@@ -107,7 +107,7 @@ lasi_init_irq(struct gsc_asic *this_lasi)
 
 #else
 
-void __init lasi_led_init(unsigned long lasi_hpa)
+static void __init lasi_led_init(unsigned long lasi_hpa)
 {
         unsigned long datareg;
 
@@ -163,8 +163,7 @@ static void lasi_power_off(void)
         gsc_writel(0x02, datareg);
 }
 
-int __init
-lasi_init_chip(struct parisc_device *dev)
+static int __init lasi_init_chip(struct parisc_device *dev)
 {
         extern void (*chassis_power_off)(void);
         struct gsc_asic *lasi;
diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index a28c8946deaa..d8233de8c75d 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -824,7 +824,7 @@ lba_fixup_bus(struct pci_bus *bus)
 }
 
 
-struct pci_bios_ops lba_bios_ops = {
+static struct pci_bios_ops lba_bios_ops = {
         .init =         lba_bios_init,
         .fixup_bus =    lba_fixup_bus,
 };
diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
index bc73b96346ff..3fac8f81d59d 100644
--- a/drivers/parisc/sba_iommu.c
+++ b/drivers/parisc/sba_iommu.c
@@ -561,7 +561,7 @@ typedef unsigned long space_t;
  * IOMMU uses little endian for the pdir.
  */
 
-void SBA_INLINE
+static void SBA_INLINE
 sba_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba,
                   unsigned long hint)
 {
@@ -1874,7 +1874,7 @@ static struct parisc_device_id sba_tbl[] = {
         { 0, }
 };
 
-int sba_driver_callback(struct parisc_device *);
+static int sba_driver_callback(struct parisc_device *);
 
 static struct parisc_driver sba_driver = {
         .name =         MODULE_NAME,
@@ -1887,8 +1887,7 @@ static struct parisc_driver sba_driver = {
 ** If so, initialize the chip and tell other partners in crime they
 ** have work to do.
 */
-int
-sba_driver_callback(struct parisc_device *dev)
+static int sba_driver_callback(struct parisc_device *dev)
 {
         struct sba_device *sba_dev;
         u32 func_class;
@@ -1979,8 +1978,6 @@ sba_driver_callback(struct parisc_device *dev)
         proc_create("sba_iommu-bitmap", 0, root, &sba_proc_bitmap_fops);
 #endif
 
-        parisc_vmerge_boundary = IOVP_SIZE;
-        parisc_vmerge_max_size = IOVP_SIZE * BITS_PER_LONG;
         parisc_has_iommu();
         return 0;
 }
diff --git a/drivers/parisc/wax.c b/drivers/parisc/wax.c
index 892a83bbe73d..da9d5ad1353c 100644
--- a/drivers/parisc/wax.c
+++ b/drivers/parisc/wax.c
@@ -68,8 +68,7 @@ wax_init_irq(struct gsc_asic *wax)
 //      gsc_writel(0xFFFFFFFF, base+0x2000); /* RS232-B on Wax */
 }
 
-int __init
-wax_init_chip(struct parisc_device *dev)
+static int __init wax_init_chip(struct parisc_device *dev)
 {
         struct gsc_asic *wax;
         struct parisc_device *parent;
diff --git a/drivers/pci/hotplug/acpi_pcihp.c b/drivers/pci/hotplug/acpi_pcihp.c
index c62ab8d240aa..1c1141801060 100644
--- a/drivers/pci/hotplug/acpi_pcihp.c
+++ b/drivers/pci/hotplug/acpi_pcihp.c
@@ -33,7 +33,6 @@
 #include <linux/pci-acpi.h>
 #include <acpi/acpi.h>
 #include <acpi/acpi_bus.h>
-#include <acpi/actypes.h>
 
 #define MY_NAME "acpi_pcihp"
 
diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index 27fd18f019f8..db85284ffb62 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -217,7 +217,6 @@ struct hpc_ops {
 #ifdef CONFIG_ACPI
 #include <acpi/acpi.h>
 #include <acpi/acpi_bus.h>
-#include <acpi/actypes.h>
 #include <linux/pci-acpi.h>
 
 extern void __init pciehp_acpi_slot_detection_init(void);
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 3582512e7226..deea8a187eb8 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -13,8 +13,6 @@
 #include <linux/module.h>
 #include <linux/pci-aspm.h>
 #include <acpi/acpi.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acresrc.h>
 #include <acpi/acpi_bus.h>
 
 #include <linux/pci-acpi.h>
diff --git a/drivers/platform/Kconfig b/drivers/platform/Kconfig
new file mode 100644
index 000000000000..9652c3fe7f5e
--- /dev/null
+++ b/drivers/platform/Kconfig
@@ -0,0 +1,5 @@
+# drivers/platform/Kconfig
+
+if X86
+source "drivers/platform/x86/Kconfig"
+endif
diff --git a/drivers/platform/Makefile b/drivers/platform/Makefile
new file mode 100644
index 000000000000..782953ae4c03
--- /dev/null
+++ b/drivers/platform/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for linux/drivers/platform
+#
+
+obj-$(CONFIG_X86)               += x86/
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
new file mode 100644
index 000000000000..e65448e99b48
--- /dev/null
+++ b/drivers/platform/x86/Kconfig
@@ -0,0 +1,375 @@
+#
+# X86 Platform Specific Drivers
+#
+
+menuconfig X86_PLATFORM_DEVICES
+        bool "X86 Platform Specific Device Drivers"
+        default y
+        ---help---
+          Say Y here to get to see options for device drivers for various
+          x86 platforms, including vendor-specific laptop extension drivers.
+          This option alone does not add any kernel code.
+
+          If you say N, all options in this submenu will be skipped and disabled.
+
+if X86_PLATFORM_DEVICES
+
+config ACER_WMI
+        tristate "Acer WMI Laptop Extras (EXPERIMENTAL)"
+        depends on EXPERIMENTAL
+        depends on ACPI
+        depends on LEDS_CLASS
+        depends on NEW_LEDS
+        depends on BACKLIGHT_CLASS_DEVICE
+        depends on SERIO_I8042
+        depends on RFKILL
+        select ACPI_WMI
+        ---help---
+          This is a driver for newer Acer (and Wistron) laptops. It adds
+          wireless radio and bluetooth control, and on some laptops,
+          exposes the mail LED and LCD backlight.
+
+          For more information about this driver see
+          <file:Documentation/laptops/acer-wmi.txt>
+
+          If you have an ACPI-WMI compatible Acer/ Wistron laptop, say Y or M
+          here.
+
+config ASUS_LAPTOP
+        tristate "Asus Laptop Extras (EXPERIMENTAL)"
+        depends on ACPI
+        depends on EXPERIMENTAL && !ACPI_ASUS
+        depends on LEDS_CLASS
+        depends on NEW_LEDS
+        depends on BACKLIGHT_CLASS_DEVICE
+        ---help---
+          This is the new Linux driver for Asus laptops. It may also support some
+          MEDION, JVC or VICTOR laptops. It makes all the extra buttons generate
+          standard ACPI events that go through /proc/acpi/events. It also adds
+          support for video output switching, LCD backlight control, Bluetooth and
+          Wlan control, and most importantly, allows you to blink those fancy LEDs.
+
+          For more information and a userspace daemon for handling the extra
+          buttons see <http://acpi4asus.sf.net/>.
+
+          If you have an ACPI-compatible ASUS laptop, say Y or M here.
+
+config FUJITSU_LAPTOP
+        tristate "Fujitsu Laptop Extras"
+        depends on ACPI
+        depends on INPUT
+        depends on BACKLIGHT_CLASS_DEVICE
+        ---help---
+          This is a driver for laptops built by Fujitsu:
+
+            * P2xxx/P5xxx/S6xxx/S7xxx series Lifebooks
+            * Possibly other Fujitsu laptop models
+            * Tested with S6410 and S7020
+
+          It adds support for LCD brightness control and some hotkeys.
+
+          If you have a Fujitsu laptop, say Y or M here.
+
+config FUJITSU_LAPTOP_DEBUG
+        bool "Verbose debug mode for Fujitsu Laptop Extras"
+        depends on FUJITSU_LAPTOP
+        default n
+        ---help---
+          Enables extra debug output from the fujitsu extras driver, at the
+          expense of a slight increase in driver size.
+
+          If you are not sure, say N here.
+
+config TC1100_WMI
+        tristate "HP Compaq TC1100 Tablet WMI Extras (EXPERIMENTAL)"
+        depends on !X86_64
+        depends on EXPERIMENTAL
+        depends on ACPI
+        select ACPI_WMI
+        ---help---
+          This is a driver for the WMI extensions (wireless and bluetooth power
+          control) of the HP Compaq TC1100 tablet.
+
+config HP_WMI
+        tristate "HP WMI extras"
+        depends on ACPI_WMI
+        depends on INPUT
+        depends on RFKILL
+        help
+         Say Y here if you want to support WMI-based hotkeys on HP laptops and
+         to read data from WMI such as docking or ambient light sensor state.
+
+         To compile this driver as a module, choose M here: the module will
+         be called hp-wmi.
+
+config MSI_LAPTOP
+        tristate "MSI Laptop Extras"
+        depends on ACPI
+        depends on BACKLIGHT_CLASS_DEVICE
+        ---help---
+          This is a driver for laptops built by MSI (MICRO-STAR
+          INTERNATIONAL):
+
+          MSI MegaBook S270 (MS-1013)
+          Cytron/TCM/Medion/Tchibo MD96100/SAM2000
+
+          It adds support for Bluetooth, WLAN and LCD brightness control.
+
+          More information about this driver is available at
+          <http://0pointer.de/lennart/tchibo.html>.
+
+          If you have an MSI S270 laptop, say Y or M here.
+
+config PANASONIC_LAPTOP
+        tristate "Panasonic Laptop Extras"
+        depends on INPUT && ACPI
+        depends on BACKLIGHT_CLASS_DEVICE
+        ---help---
+          This driver adds support for access to backlight control and hotkeys
+          on Panasonic Let's Note laptops.
+
+          If you have a Panasonic Let's note laptop (such as the R1(N variant),
+          R2, R3, R5, T2, W2 and Y2 series), say Y.
+
+config COMPAL_LAPTOP
+        tristate "Compal Laptop Extras"
+        depends on ACPI
+        depends on BACKLIGHT_CLASS_DEVICE
+        ---help---
+          This is a driver for laptops built by Compal:
+
+          Compal FL90/IFL90
+          Compal FL91/IFL91
+          Compal FL92/JFL92
+          Compal FT00/IFT00
+
+          It adds support for Bluetooth, WLAN and LCD brightness control.
+
+          If you have an Compal FL9x/IFL9x/FT00 laptop, say Y or M here.
+
+config SONY_LAPTOP
+        tristate "Sony Laptop Extras"
+        depends on ACPI
+        select BACKLIGHT_CLASS_DEVICE
+        depends on INPUT
+          ---help---
+          This mini-driver drives the SNC and SPIC devices present in the ACPI
+          BIOS of the Sony Vaio laptops.
+
+          It gives access to some extra laptop functionalities like Bluetooth,
+          screen brightness control, Fn keys and allows powering on/off some
+          devices.
+
+          Read <file:Documentation/laptops/sony-laptop.txt> for more information.
+
+config SONYPI_COMPAT
+        bool "Sonypi compatibility"
+        depends on SONY_LAPTOP
+          ---help---
+          Build the sonypi driver compatibility code into the sony-laptop driver.
+
+config THINKPAD_ACPI
+        tristate "ThinkPad ACPI Laptop Extras"
+        depends on ACPI
+        select BACKLIGHT_LCD_SUPPORT
+        select BACKLIGHT_CLASS_DEVICE
+        select HWMON
+        select NVRAM
+        select INPUT
+        select NEW_LEDS
+        select LEDS_CLASS
+        select NET
+        select RFKILL
+        ---help---
+          This is a driver for the IBM and Lenovo ThinkPad laptops. It adds
+          support for Fn-Fx key combinations, Bluetooth control, video
+          output switching, ThinkLight control, UltraBay eject and more.
+          For more information about this driver see
+          <file:Documentation/laptops/thinkpad-acpi.txt> and
+          <http://ibm-acpi.sf.net/> .
+
+          This driver was formerly known as ibm-acpi.
+
+          If you have an IBM or Lenovo ThinkPad laptop, say Y or M here.
+
+config THINKPAD_ACPI_DEBUG
+        bool "Verbose debug mode"
+        depends on THINKPAD_ACPI
+        default n
+        ---help---
+          Enables extra debugging information, at the expense of a slightly
+          increase in driver size.
+
+          If you are not sure, say N here.
+
+config THINKPAD_ACPI_DOCK
+        bool "Legacy Docking Station Support"
+        depends on THINKPAD_ACPI
+        depends on ACPI_DOCK=n
+        default n
+        ---help---
+          Allows the thinkpad_acpi driver to handle docking station events.
+          This support was made obsolete by the generic ACPI docking station
+          support (CONFIG_ACPI_DOCK).  It will allow locking and removing the
+          laptop from the docking station, but will not properly connect PCI
+          devices.
+
+          If you are not sure, say N here.
+
+config THINKPAD_ACPI_BAY
+        bool "Legacy Removable Bay Support"
+        depends on THINKPAD_ACPI
+        default y
+        ---help---
+          Allows the thinkpad_acpi driver to handle removable bays.  It will
+          electrically disable the device in the bay, and also generate
+          notifications when the bay lever is ejected or inserted.
+
+          If you are not sure, say Y here.
+
+config THINKPAD_ACPI_VIDEO
+        bool "Video output control support"
+        depends on THINKPAD_ACPI
+        default y
+        ---help---
+          Allows the thinkpad_acpi driver to provide an interface to control
+          the various video output ports.
+
+          This feature often won't work well, depending on ThinkPad model,
+          display state, video output devices in use, whether there is a X
+          server running, phase of the moon, and the current mood of
+          Schroedinger's cat.  If you can use X.org's RandR to control
+          your ThinkPad's video output ports instead of this feature,
+          don't think twice: do it and say N here to save some memory.
+
+          If you are not sure, say Y here.
+
+config THINKPAD_ACPI_HOTKEY_POLL
+        bool "Support NVRAM polling for hot keys"
+        depends on THINKPAD_ACPI
+        default y
+        ---help---
+          Some thinkpad models benefit from NVRAM polling to detect a few of
+          the hot key press events.  If you know your ThinkPad model does not
+          need to do NVRAM polling to support any of the hot keys you use,
+          unselecting this option will save about 1kB of memory.
+
+          ThinkPads T40 and newer, R52 and newer, and X31 and newer are
+          unlikely to need NVRAM polling in their latest BIOS versions.
+
+          NVRAM polling can detect at most the following keys: ThinkPad/Access
+          IBM, Zoom, Switch Display (fn+F7), ThinkLight, Volume up/down/mute,
+          Brightness up/down, Display Expand (fn+F8), Hibernate (fn+F12).
+
+          If you are not sure, say Y here.  The driver enables polling only if
+          it is strictly necessary to do so.
+
+config INTEL_MENLOW
+        tristate "Thermal Management driver for Intel menlow platform"
+        depends on ACPI_THERMAL
+        select THERMAL
+        ---help---
+          ACPI thermal management enhancement driver on
+          Intel Menlow platform.
+
+          If unsure, say N.
+
+config EEEPC_LAPTOP
+        tristate "Eee PC Hotkey Driver (EXPERIMENTAL)"
+        depends on ACPI
+        depends on EXPERIMENTAL
+        select BACKLIGHT_CLASS_DEVICE
+        select HWMON
+        select RFKILL
+        ---help---
+          This driver supports the Fn-Fx keys on Eee PC laptops.
+          It also adds the ability to switch camera/wlan on/off.
+
+          If you have an Eee PC laptop, say Y or M here.
+
+
+config ACPI_WMI
+        tristate "WMI (EXPERIMENTAL)"
+        depends on ACPI
+        depends on EXPERIMENTAL
+        help
+          This driver adds support for the ACPI-WMI (Windows Management
+          Instrumentation) mapper device (PNP0C14) found on some systems.
+
+          ACPI-WMI is a proprietary extension to ACPI to expose parts of the
+          ACPI firmware to userspace - this is done through various vendor
+          defined methods and data blocks in a PNP0C14 device, which are then
+          made available for userspace to call.
+
+          The implementation of this in Linux currently only exposes this to
+          other kernel space drivers.
+
+          This driver is a required dependency to build the firmware specific
+          drivers needed on many machines, including Acer and HP laptops.
+
+          It is safe to enable this driver even if your DSDT doesn't define
+          any ACPI-WMI devices.
+
+config ACPI_ASUS
+        tristate "ASUS/Medion Laptop Extras"
+        depends on ACPI
+        select BACKLIGHT_CLASS_DEVICE
+        ---help---
+          This driver provides support for extra features of ACPI-compatible
+          ASUS laptops. As some of Medion laptops are made by ASUS, it may also
+          support some Medion laptops (such as 9675 for example).  It makes all
+          the extra buttons generate standard ACPI events that go through
+          /proc/acpi/events, and (on some models) adds support for changing the
+          display brightness and output, switching the LCD backlight on and off,
+          and most importantly, allows you to blink those fancy LEDs intended
+          for reporting mail and wireless status.
+
+          Note: display switching code is currently considered EXPERIMENTAL,
+          toying with these values may even lock your machine.
+
+          All settings are changed via /proc/acpi/asus directory entries. Owner
+          and group for these entries can be set with asus_uid and asus_gid
+          parameters.
+
+          More information and a userspace daemon for handling the extra buttons
+          at <http://sourceforge.net/projects/acpi4asus/>.
+
+          If you have an ACPI-compatible ASUS laptop, say Y or M here. This
+          driver is still under development, so if your laptop is unsupported or
+          something works not quite as expected, please use the mailing list
+          available on the above page (acpi4asus-user@lists.sourceforge.net).
+
+          NOTE: This driver is deprecated and will probably be removed soon,
+          use asus-laptop instead.
+
+config ACPI_TOSHIBA
+        tristate "Toshiba Laptop Extras"
+        depends on ACPI
+        depends on INPUT
+        select INPUT_POLLDEV
+        select NET
+        select RFKILL
+        select BACKLIGHT_CLASS_DEVICE
+        ---help---
+          This driver adds support for access to certain system settings
+          on "legacy free" Toshiba laptops.  These laptops can be recognized by
+          their lack of a BIOS setup menu and APM support.
+
+          On these machines, all system configuration is handled through the
+          ACPI.  This driver is required for access to controls not covered
+          by the general ACPI drivers, such as LCD brightness, video output,
+          etc.
+
+          This driver differs from the non-ACPI Toshiba laptop driver (located
+          under "Processor type and features") in several aspects.
+          Configuration is accessed by reading and writing text files in the
+          /proc tree instead of by program interface to /dev.  Furthermore, no
+          power management functions are exposed, as those are handled by the
+          general ACPI drivers.
+
+          More information about this driver is available at
+          <http://memebeam.org/toys/ToshibaAcpiDriver>.
+
+          If you have a legacy free Toshiba laptop (such as the Libretto L1
+          series), say Y.
+endif # X86_PLATFORM_DEVICES
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
new file mode 100644
index 000000000000..1e9de2ae0de5
--- /dev/null
+++ b/drivers/platform/x86/Makefile
@@ -0,0 +1,19 @@
+#
+# Makefile for linux/drivers/platform/x86
+# x86 Platform-Specific Drivers
+#
+obj-$(CONFIG_ASUS_LAPTOP)       += asus-laptop.o
+obj-$(CONFIG_EEEPC_LAPTOP)      += eeepc-laptop.o
+obj-$(CONFIG_MSI_LAPTOP)        += msi-laptop.o
+obj-$(CONFIG_COMPAL_LAPTOP)     += compal-laptop.o
+obj-$(CONFIG_ACER_WMI)          += acer-wmi.o
+obj-$(CONFIG_HP_WMI)            += hp-wmi.o
+obj-$(CONFIG_TC1100_WMI)        += tc1100-wmi.o
+obj-$(CONFIG_SONY_LAPTOP)       += sony-laptop.o
+obj-$(CONFIG_THINKPAD_ACPI)     += thinkpad_acpi.o
+obj-$(CONFIG_FUJITSU_LAPTOP)    += fujitsu-laptop.o
+obj-$(CONFIG_PANASONIC_LAPTOP)  += panasonic-laptop.o
+obj-$(CONFIG_INTEL_MENLOW)      += intel_menlow.o
+obj-$(CONFIG_ACPI_WMI)          += wmi.o
+obj-$(CONFIG_ACPI_ASUS)         += asus_acpi.o
+obj-$(CONFIG_ACPI_TOSHIBA)      += toshiba_acpi.o
diff --git a/drivers/misc/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index 94c9f911824e..94c9f911824e 100644
--- a/drivers/misc/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
diff --git a/drivers/misc/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index 8fb8b3591048..8fb8b3591048 100644
--- a/drivers/misc/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
diff --git a/drivers/acpi/asus_acpi.c b/drivers/platform/x86/asus_acpi.c
index 1e74988c7b2d..1e74988c7b2d 100644
--- a/drivers/acpi/asus_acpi.c
+++ b/drivers/platform/x86/asus_acpi.c
diff --git a/drivers/misc/compal-laptop.c b/drivers/platform/x86/compal-laptop.c
index 11003bba10d3..11003bba10d3 100644
--- a/drivers/misc/compal-laptop.c
+++ b/drivers/platform/x86/compal-laptop.c
diff --git a/drivers/misc/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 02fe2b8b8939..02fe2b8b8939 100644
--- a/drivers/misc/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
diff --git a/drivers/misc/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index a7dd3e9fb79d..65dc41540c62 100644
--- a/drivers/misc/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -3,6 +3,7 @@
 /*
   Copyright (C) 2007,2008 Jonathan Woithe <jwoithe@physics.adelaide.edu.au>
   Copyright (C) 2008 Peter Gruber <nokos@gmx.net>
+  Copyright (C) 2008 Tony Vroon <tony@linx.net>
   Based on earlier work:
     Copyright (C) 2003 Shane Spencer <shane@bogomip.com>
     Adrian Yee <brewt-fujitsu@brewt.org>
@@ -65,8 +66,11 @@
 #include <linux/kfifo.h>
 #include <linux/video_output.h>
 #include <linux/platform_device.h>
+#ifdef CONFIG_LEDS_CLASS
+#include <linux/leds.h>
+#endif
 
-#define FUJITSU_DRIVER_VERSION "0.4.3"
+#define FUJITSU_DRIVER_VERSION "0.5.0"
 
 #define FUJITSU_LCD_N_LEVELS 8
 
@@ -83,6 +87,24 @@
 #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS     0x86
 #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS     0x87
 
+/* FUNC interface - command values */
+#define FUNC_RFKILL     0x1000
+#define FUNC_LEDS       0x1001
+#define FUNC_BUTTONS    0x1002
+#define FUNC_BACKLIGHT  0x1004
+
+/* FUNC interface - responses */
+#define UNSUPPORTED_CMD 0x80000000
+
+#ifdef CONFIG_LEDS_CLASS
+/* FUNC interface - LED control */
+#define FUNC_LED_OFF    0x1
+#define FUNC_LED_ON     0x30001
+#define KEYBOARD_LAMPS  0x100
+#define LOGOLAMP_POWERON 0x2000
+#define LOGOLAMP_ALWAYS  0x4000
+#endif
+
 /* Hotkey details */
 #define KEY1_CODE       0x410   /* codes for the keys in the GIRB register */
 #define KEY2_CODE       0x411
@@ -133,7 +155,6 @@ struct fujitsu_t {
 
 static struct fujitsu_t *fujitsu;
 static int use_alt_lcd_levels = -1;
-static int disable_brightness_keys = -1;
 static int disable_brightness_adjust = -1;
 
 /* Device used to access other hotkeys on the laptop */
@@ -145,8 +166,9 @@ struct fujitsu_hotkey_t {
         struct platform_device *pf_device;
         struct kfifo *fifo;
         spinlock_t fifo_lock;
-
-        unsigned int irb;       /* info about the pressed buttons */
+        int rfkill_state;
+        int logolamp_registered;
+        int kblamps_registered;
 };
 
 static struct fujitsu_hotkey_t *fujitsu_hotkey;
@@ -154,12 +176,139 @@ static struct fujitsu_hotkey_t *fujitsu_hotkey;
 static void acpi_fujitsu_hotkey_notify(acpi_handle handle, u32 event,
                                        void *data);
 
+#ifdef CONFIG_LEDS_CLASS
+static enum led_brightness logolamp_get(struct led_classdev *cdev);
+static void logolamp_set(struct led_classdev *cdev,
+                               enum led_brightness brightness);
+
+struct led_classdev logolamp_led = {
+ .name = "fujitsu::logolamp",
+ .brightness_get = logolamp_get,
+ .brightness_set = logolamp_set
+};
+
+static enum led_brightness kblamps_get(struct led_classdev *cdev);
+static void kblamps_set(struct led_classdev *cdev,
+                               enum led_brightness brightness);
+
+struct led_classdev kblamps_led = {
+ .name = "fujitsu::kblamps",
+ .brightness_get = kblamps_get,
+ .brightness_set = kblamps_set
+};
+#endif
+
 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
 static u32 dbg_level = 0x03;
 #endif
 
 static void acpi_fujitsu_notify(acpi_handle handle, u32 event, void *data);
 
+/* Fujitsu ACPI interface function */
+
+static int call_fext_func(int cmd, int arg0, int arg1, int arg2)
+{
+        acpi_status status = AE_OK;
+        union acpi_object params[4] = {
+        { .type = ACPI_TYPE_INTEGER },
+        { .type = ACPI_TYPE_INTEGER },
+        { .type = ACPI_TYPE_INTEGER },
+        { .type = ACPI_TYPE_INTEGER }
+        };
+        struct acpi_object_list arg_list = { 4, &params[0] };
+        struct acpi_buffer output;
+        union acpi_object out_obj;
+        acpi_handle handle = NULL;
+
+        status = acpi_get_handle(fujitsu_hotkey->acpi_handle, "FUNC", &handle);
+        if (ACPI_FAILURE(status)) {
+                vdbg_printk(FUJLAPTOP_DBG_ERROR,
+                                "FUNC interface is not present\n");
+                return -ENODEV;
+        }
+
+        params[0].integer.value = cmd;
+        params[1].integer.value = arg0;
+        params[2].integer.value = arg1;
+        params[3].integer.value = arg2;
+
+        output.length = sizeof(out_obj);
+        output.pointer = &out_obj;
+
+        status = acpi_evaluate_object(handle, NULL, &arg_list, &output);
+        if (ACPI_FAILURE(status)) {
+                vdbg_printk(FUJLAPTOP_DBG_WARN,
+                        "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) call failed\n",
+                                cmd, arg0, arg1, arg2);
+                return -ENODEV;
+        }
+
+        if (out_obj.type != ACPI_TYPE_INTEGER) {
+                vdbg_printk(FUJLAPTOP_DBG_WARN,
+                        "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) did not "
+                        "return an integer\n",
+                        cmd, arg0, arg1, arg2);
+                return -ENODEV;
+        }
+
+        vdbg_printk(FUJLAPTOP_DBG_TRACE,
+                "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
+                        cmd, arg0, arg1, arg2, (int)out_obj.integer.value);
+        return out_obj.integer.value;
+}
+
+#ifdef CONFIG_LEDS_CLASS
+/* LED class callbacks */
+
+static void logolamp_set(struct led_classdev *cdev,
+                               enum led_brightness brightness)
+{
+        if (brightness >= LED_FULL) {
+                call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
+                call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON);
+        } else if (brightness >= LED_HALF) {
+                call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
+                call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF);
+        } else {
+                call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF);
+        }
+}
+
+static void kblamps_set(struct led_classdev *cdev,
+                               enum led_brightness brightness)
+{
+        if (brightness >= LED_FULL)
+                call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_ON);
+        else
+                call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS, FUNC_LED_OFF);
+}
+
+static enum led_brightness logolamp_get(struct led_classdev *cdev)
+{
+        enum led_brightness brightness = LED_OFF;
+        int poweron, always;
+
+        poweron = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
+        if (poweron == FUNC_LED_ON) {
+                brightness = LED_HALF;
+                always = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
+                if (always == FUNC_LED_ON)
+                        brightness = LED_FULL;
+        }
+        return brightness;
+}
+
+static enum led_brightness kblamps_get(struct led_classdev *cdev)
+{
+        enum led_brightness brightness = LED_OFF;
+
+        if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
+                brightness = LED_FULL;
+
+        return brightness;
+}
+#endif
+
 /* Hardware access for LCD brightness control */
 
 static int set_lcd_level(int level)
@@ -263,44 +412,34 @@ static int get_max_brightness(void)
         return fujitsu->max_brightness;
 }
 
-static int get_lcd_level_alt(void)
-{
-        unsigned long long state = 0;
-        acpi_status status = AE_OK;
-
-        vdbg_printk(FUJLAPTOP_DBG_TRACE, "get lcd level via GBLS\n");
-
-        status =
-            acpi_evaluate_integer(fujitsu->acpi_handle, "GBLS", NULL, &state);
-        if (status < 0)
-                return status;
-
-        fujitsu->brightness_level = state & 0x0fffffff;
-
-        if (state & 0x80000000)
-                fujitsu->brightness_changed = 1;
-        else
-                fujitsu->brightness_changed = 0;
-
-        return fujitsu->brightness_level;
-}
-
 /* Backlight device stuff */
 
 static int bl_get_brightness(struct backlight_device *b)
 {
-        if (use_alt_lcd_levels)
-                return get_lcd_level_alt();
-        else
-                return get_lcd_level();
+        return get_lcd_level();
 }
 
 static int bl_update_status(struct backlight_device *b)
 {
+        int ret;
+        if (b->props.power == 4)
+                ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
+        else
+                ret = call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
+        if (ret != 0)
+                vdbg_printk(FUJLAPTOP_DBG_ERROR,
+                        "Unable to adjust backlight power, error code %i\n",
+                        ret);
+
         if (use_alt_lcd_levels)
-                return set_lcd_level_alt(b->props.brightness);
+                ret = set_lcd_level_alt(b->props.brightness);
         else
-                return set_lcd_level(b->props.brightness);
+                ret = set_lcd_level(b->props.brightness);
+        if (ret != 0)
+                vdbg_printk(FUJLAPTOP_DBG_ERROR,
+                        "Unable to adjust LCD brightness, error code %i\n",
+                        ret);
+        return ret;
 }
 
 static struct backlight_ops fujitsubl_ops = {
@@ -344,10 +483,7 @@ static ssize_t show_lcd_level(struct device *dev,
 
         int ret;
 
-        if (use_alt_lcd_levels)
-                ret = get_lcd_level_alt();
-        else
-                ret = get_lcd_level();
+        ret = get_lcd_level();
         if (ret < 0)
                 return ret;
 
@@ -372,52 +508,71 @@ static ssize_t store_lcd_level(struct device *dev,
         if (ret < 0)
                 return ret;
 
-        if (use_alt_lcd_levels)
-                ret = get_lcd_level_alt();
-        else
-                ret = get_lcd_level();
+        ret = get_lcd_level();
         if (ret < 0)
                 return ret;
 
         return count;
 }
 
-/* Hardware access for hotkey device */
-
-static int get_irb(void)
+static ssize_t
+ignore_store(struct device *dev,
+             struct device_attribute *attr, const char *buf, size_t count)
 {
-        unsigned long long state = 0;
-        acpi_status status = AE_OK;
-
-        vdbg_printk(FUJLAPTOP_DBG_TRACE, "Get irb\n");
-
-        status =
-            acpi_evaluate_integer(fujitsu_hotkey->acpi_handle, "GIRB", NULL,
-                                  &state);
-        if (status < 0)
-                return status;
+        return count;
+}
 
-        fujitsu_hotkey->irb = state;
+static ssize_t
+show_lid_state(struct device *dev,
+                        struct device_attribute *attr, char *buf)
+{
+        if (fujitsu_hotkey->rfkill_state == UNSUPPORTED_CMD)
+                return sprintf(buf, "unknown\n");
+        if (fujitsu_hotkey->rfkill_state & 0x100)
+                return sprintf(buf, "open\n");
+        else
+                return sprintf(buf, "closed\n");
+}
 
-        return fujitsu_hotkey->irb;
+static ssize_t
+show_dock_state(struct device *dev,
+                        struct device_attribute *attr, char *buf)
+{
+        if (fujitsu_hotkey->rfkill_state == UNSUPPORTED_CMD)
+                return sprintf(buf, "unknown\n");
+        if (fujitsu_hotkey->rfkill_state & 0x200)
+                return sprintf(buf, "docked\n");
+        else
+                return sprintf(buf, "undocked\n");
 }
 
 static ssize_t
-ignore_store(struct device *dev,
-             struct device_attribute *attr, const char *buf, size_t count)
+show_radios_state(struct device *dev,
+                        struct device_attribute *attr, char *buf)
 {
-        return count;
+        if (fujitsu_hotkey->rfkill_state == UNSUPPORTED_CMD)
+                return sprintf(buf, "unknown\n");
+        if (fujitsu_hotkey->rfkill_state & 0x20)
+                return sprintf(buf, "on\n");
+        else
+                return sprintf(buf, "killed\n");
 }
 
 static DEVICE_ATTR(max_brightness, 0444, show_max_brightness, ignore_store);
 static DEVICE_ATTR(brightness_changed, 0444, show_brightness_changed,
                    ignore_store);
 static DEVICE_ATTR(lcd_level, 0644, show_lcd_level, store_lcd_level);
+static DEVICE_ATTR(lid, 0444, show_lid_state, ignore_store);
+static DEVICE_ATTR(dock, 0444, show_dock_state, ignore_store);
+static DEVICE_ATTR(radios, 0444, show_radios_state, ignore_store);
 
 static struct attribute *fujitsupf_attributes[] = {
         &dev_attr_brightness_changed.attr,
         &dev_attr_max_brightness.attr,
         &dev_attr_lcd_level.attr,
+        &dev_attr_lid.attr,
+        &dev_attr_dock.attr,
+        &dev_attr_radios.attr,
         NULL
 };
 
@@ -435,24 +590,16 @@ static struct platform_driver fujitsupf_driver = {
 static void dmi_check_cb_common(const struct dmi_system_id *id)
 {
         acpi_handle handle;
-        int have_blnf;
         printk(KERN_INFO "fujitsu-laptop: Identified laptop model '%s'.\n",
                id->ident);
-        have_blnf = ACPI_SUCCESS
-            (acpi_get_handle(NULL, "\\_SB.PCI0.GFX0.LCD.BLNF", &handle));
         if (use_alt_lcd_levels == -1) {
-                vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detecting usealt\n");
-                use_alt_lcd_levels = 1;
-        }
-        if (disable_brightness_keys == -1) {
-                vdbg_printk(FUJLAPTOP_DBG_TRACE,
-                            "auto-detecting disable_keys\n");
-                disable_brightness_keys = have_blnf ? 1 : 0;
-        }
-        if (disable_brightness_adjust == -1) {
-                vdbg_printk(FUJLAPTOP_DBG_TRACE,
-                            "auto-detecting disable_adjust\n");
-                disable_brightness_adjust = have_blnf ? 0 : 1;
+                if (ACPI_SUCCESS(acpi_get_handle(NULL,
+                                "\\_SB.PCI0.LPCB.FJEX.SBL2", &handle)))
+                        use_alt_lcd_levels = 1;
+                else
+                        use_alt_lcd_levels = 0;
+                vdbg_printk(FUJLAPTOP_DBG_TRACE, "auto-detected usealt as "
+                        "%i\n", use_alt_lcd_levels);
         }
 }
 
@@ -581,19 +728,14 @@ static int acpi_fujitsu_add(struct acpi_device *device)
 
         /* do config (detect defaults) */
         use_alt_lcd_levels = use_alt_lcd_levels == 1 ? 1 : 0;
-        disable_brightness_keys = disable_brightness_keys == 1 ? 1 : 0;
         disable_brightness_adjust = disable_brightness_adjust == 1 ? 1 : 0;
         vdbg_printk(FUJLAPTOP_DBG_INFO,
-                    "config: [alt interface: %d], [key disable: %d], [adjust disable: %d]\n",
-                    use_alt_lcd_levels, disable_brightness_keys,
-                    disable_brightness_adjust);
+                    "config: [alt interface: %d], [adjust disable: %d]\n",
+                    use_alt_lcd_levels, disable_brightness_adjust);
 
         if (get_max_brightness() <= 0)
                 fujitsu->max_brightness = FUJITSU_LCD_N_LEVELS;
-        if (use_alt_lcd_levels)
-                get_lcd_level_alt();
-        else
-                get_lcd_level();
+        get_lcd_level();
 
         return result;
 
@@ -644,43 +786,23 @@ static void acpi_fujitsu_notify(acpi_handle handle, u32 event, void *data)
         case ACPI_FUJITSU_NOTIFY_CODE1:
                 keycode = 0;
                 oldb = fujitsu->brightness_level;
-                get_lcd_level();  /* the alt version always yields changed */
+                get_lcd_level();
                 newb = fujitsu->brightness_level;
 
                 vdbg_printk(FUJLAPTOP_DBG_TRACE,
                             "brightness button event [%i -> %i (%i)]\n",
                             oldb, newb, fujitsu->brightness_changed);
 
-                if (oldb == newb && fujitsu->brightness_changed) {
-                        keycode = 0;
-                        if (disable_brightness_keys != 1) {
-                                if (oldb == 0) {
-                                        acpi_bus_generate_proc_event
-                                            (fujitsu->dev,
-                                             ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS,
-                                             0);
-                                        keycode = KEY_BRIGHTNESSDOWN;
-                                } else if (oldb ==
-                                           (fujitsu->max_brightness) - 1) {
-                                        acpi_bus_generate_proc_event
-                                            (fujitsu->dev,
-                                             ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS,
-                                             0);
-                                        keycode = KEY_BRIGHTNESSUP;
-                                }
-                        }
-                } else if (oldb < newb) {
+                if (oldb < newb) {
                         if (disable_brightness_adjust != 1) {
                                 if (use_alt_lcd_levels)
                                         set_lcd_level_alt(newb);
                                 else
                                         set_lcd_level(newb);
                         }
-                        if (disable_brightness_keys != 1) {
-                                acpi_bus_generate_proc_event(fujitsu->dev,
-                                        ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS, 0);
-                                keycode = KEY_BRIGHTNESSUP;
-                        }
+                        acpi_bus_generate_proc_event(fujitsu->dev,
+                                ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS, 0);
+                        keycode = KEY_BRIGHTNESSUP;
                 } else if (oldb > newb) {
                         if (disable_brightness_adjust != 1) {
                                 if (use_alt_lcd_levels)
@@ -688,13 +810,9 @@ static void acpi_fujitsu_notify(acpi_handle handle, u32 event, void *data)
                                 else
                                         set_lcd_level(newb);
                         }
-                        if (disable_brightness_keys != 1) {
-                                acpi_bus_generate_proc_event(fujitsu->dev,
-                                        ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS, 0);
-                                keycode = KEY_BRIGHTNESSDOWN;
-                        }
-                } else {
-                        keycode = KEY_UNKNOWN;
+                        acpi_bus_generate_proc_event(fujitsu->dev,
+                                ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS, 0);
+                        keycode = KEY_BRIGHTNESSDOWN;
                 }
                 break;
         default:
@@ -771,7 +889,8 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
         input->id.bustype = BUS_HOST;
         input->id.product = 0x06;
         input->dev.parent = &device->dev;
-        input->evbit[0] = BIT(EV_KEY);
+
+        set_bit(EV_KEY, input->evbit);
         set_bit(fujitsu->keycode1, input->keybit);
         set_bit(fujitsu->keycode2, input->keybit);
         set_bit(fujitsu->keycode3, input->keybit);
@@ -803,10 +922,44 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
                         printk(KERN_ERR "_INI Method failed\n");
         }
 
-        i = 0;                  /* Discard hotkey ringbuffer */
-        while (get_irb() != 0 && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) ;
+        i = 0;
+        while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
+                && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
+                ; /* No action, result is discarded */
         vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
 
+        fujitsu_hotkey->rfkill_state =
+                call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
+
+        /* Suspect this is a keymap of the application panel, print it */
+        printk(KERN_INFO "fujitsu-laptop: BTNI: [0x%x]\n",
+                call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0));
+
+        #ifdef CONFIG_LEDS_CLASS
+        if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
+                result = led_classdev_register(&fujitsu->pf_device->dev,
+                                                &logolamp_led);
+                if (result == 0) {
+                        fujitsu_hotkey->logolamp_registered = 1;
+                } else {
+                        printk(KERN_ERR "fujitsu-laptop: Could not register "
+                        "LED handler for logo lamp, error %i\n", result);
+                }
+        }
+
+        if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
+           (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
+                result = led_classdev_register(&fujitsu->pf_device->dev,
+                                                &kblamps_led);
+                if (result == 0) {
+                        fujitsu_hotkey->kblamps_registered = 1;
+                } else {
+                        printk(KERN_ERR "fujitsu-laptop: Could not register "
+                        "LED handler for keyboard lamps, error %i\n", result);
+                }
+        }
+        #endif
+
         return result;
 
 end:
@@ -852,16 +1005,15 @@ static void acpi_fujitsu_hotkey_notify(acpi_handle handle, u32 event,
 
         input = fujitsu_hotkey->input;
 
-        vdbg_printk(FUJLAPTOP_DBG_TRACE, "Hotkey event\n");
+        fujitsu_hotkey->rfkill_state =
+                call_fext_func(FUNC_RFKILL, 0x4, 0x0, 0x0);
 
         switch (event) {
         case ACPI_FUJITSU_NOTIFY_CODE1:
                 i = 0;
-                while ((irb = get_irb()) != 0
-                       && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
-                        vdbg_printk(FUJLAPTOP_DBG_TRACE, "GIRB result [%x]\n",
-                                    irb);
-
+                while ((irb =
+                        call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0
+                                && (i++) < MAX_HOTKEY_RINGBUFFER_SIZE) {
                         switch (irb & 0x4ff) {
                         case KEY1_CODE:
                                 keycode = fujitsu->keycode1;
@@ -1035,6 +1187,15 @@ static int __init fujitsu_init(void)
                 goto fail_hotkey1;
         }
 
+        /* Sync backlight power status (needs FUJ02E3 device, hence deferred) */
+
+        if (!acpi_video_backlight_support()) {
+                if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
+                        fujitsu->bl_device->props.power = 4;
+                else
+                        fujitsu->bl_device->props.power = 0;
+        }
+
         printk(KERN_INFO "fujitsu-laptop: driver " FUJITSU_DRIVER_VERSION
                " successfully loaded.\n");
 
@@ -1074,6 +1235,14 @@ fail_acpi:
 
 static void __exit fujitsu_cleanup(void)
 {
+        #ifdef CONFIG_LEDS_CLASS
+        if (fujitsu_hotkey->logolamp_registered != 0)
+                led_classdev_unregister(&logolamp_led);
+
+        if (fujitsu_hotkey->kblamps_registered != 0)
+                led_classdev_unregister(&kblamps_led);
+        #endif
+
         sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
                            &fujitsupf_attribute_group);
         platform_device_unregister(fujitsu->pf_device);
@@ -1098,9 +1267,6 @@ module_exit(fujitsu_cleanup);
 module_param(use_alt_lcd_levels, uint, 0644);
 MODULE_PARM_DESC(use_alt_lcd_levels,
                  "Use alternative interface for lcd_levels (needed for Lifebook s6410).");
-module_param(disable_brightness_keys, uint, 0644);
-MODULE_PARM_DESC(disable_brightness_keys,
-                 "Disable brightness keys (eg. if they are already handled by the generic ACPI_VIDEO device).");
 module_param(disable_brightness_adjust, uint, 0644);
 MODULE_PARM_DESC(disable_brightness_adjust, "Disable brightness adjustment .");
 #ifdef CONFIG_FUJITSU_LAPTOP_DEBUG
@@ -1108,12 +1274,13 @@ module_param_named(debug, dbg_level, uint, 0644);
 MODULE_PARM_DESC(debug, "Sets debug level bit-mask");
 #endif
 
-MODULE_AUTHOR("Jonathan Woithe, Peter Gruber");
+MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon");
 MODULE_DESCRIPTION("Fujitsu laptop extras support");
 MODULE_VERSION(FUJITSU_DRIVER_VERSION);
 MODULE_LICENSE("GPL");
 
 MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
+MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1E6:*:cvrS6420:*");
 MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
 
 static struct pnp_device_id pnp_ids[] = {
diff --git a/drivers/misc/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
index 4b7c24c519c3..4b7c24c519c3 100644
--- a/drivers/misc/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
diff --git a/drivers/misc/intel_menlow.c b/drivers/platform/x86/intel_menlow.c
index 27b7662955bb..27b7662955bb 100644
--- a/drivers/misc/intel_menlow.c
+++ b/drivers/platform/x86/intel_menlow.c
diff --git a/drivers/misc/msi-laptop.c b/drivers/platform/x86/msi-laptop.c
index 759763d18e4c..759763d18e4c 100644
--- a/drivers/misc/msi-laptop.c
+++ b/drivers/platform/x86/msi-laptop.c
diff --git a/drivers/misc/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c
index 4a1bc64485d5..f30db367c82e 100644
--- a/drivers/misc/panasonic-laptop.c
+++ b/drivers/platform/x86/panasonic-laptop.c
@@ -241,8 +241,6 @@ static int acpi_pcc_write_sset(struct pcc_acpi *pcc, int func, int val)
         };
         acpi_status status = AE_OK;
 
-        ACPI_FUNCTION_TRACE("acpi_pcc_write_sset");
-
         status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SSET,
                                       &params, NULL);
 
@@ -254,8 +252,6 @@ static inline int acpi_pcc_get_sqty(struct acpi_device *device)
         unsigned long long s;
         acpi_status status;
 
-        ACPI_FUNCTION_TRACE("acpi_pcc_get_sqty");
-
         status = acpi_evaluate_integer(device->handle, METHOD_HKEY_SQTY,
                                        NULL, &s);
         if (ACPI_SUCCESS(status))
@@ -274,8 +270,6 @@ static int acpi_pcc_retrieve_biosdata(struct pcc_acpi *pcc, u32 *sinf)
         union acpi_object *hkey = NULL;
         int i;
 
-        ACPI_FUNCTION_TRACE("acpi_pcc_retrieve_biosdata");
-
         status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SINF, 0,
                                       &buffer);
         if (ACPI_FAILURE(status)) {
@@ -501,8 +495,6 @@ static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc)
         int key_code, hkey_num;
         unsigned long long result;
 
-        ACPI_FUNCTION_TRACE("acpi_pcc_generate_keyinput");
-
         rc = acpi_evaluate_integer(pcc->handle, METHOD_HKEY_QUERY,
                                    NULL, &result);
         if (!ACPI_SUCCESS(rc)) {
@@ -538,8 +530,6 @@ static void acpi_pcc_hotkey_notify(acpi_handle handle, u32 event, void *data)
 {
         struct pcc_acpi *pcc = (struct pcc_acpi *) data;
 
-        ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_notify");
-
         switch (event) {
         case HKEY_NOTIFY:
                 acpi_pcc_generate_keyinput(pcc);
@@ -554,8 +544,6 @@ static int acpi_pcc_init_input(struct pcc_acpi *pcc)
 {
         int i, rc;
 
-        ACPI_FUNCTION_TRACE("acpi_pcc_init_input");
-
         pcc->input_dev = input_allocate_device();
         if (!pcc->input_dev) {
                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
@@ -597,8 +585,6 @@ static int acpi_pcc_hotkey_resume(struct acpi_device *device)
         struct pcc_acpi *pcc = acpi_driver_data(device);
         acpi_status status = AE_OK;
 
-        ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_resume");
-
         if (device == NULL || pcc == NULL)
                 return -EINVAL;
 
@@ -616,8 +602,6 @@ static int acpi_pcc_hotkey_add(struct acpi_device *device)
         struct pcc_acpi *pcc;
         int num_sifr, result;
 
-        ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_add");
-
         if (!device)
                 return -EINVAL;
 
@@ -714,8 +698,6 @@ static int __init acpi_pcc_init(void)
 {
         int result = 0;
 
-        ACPI_FUNCTION_TRACE("acpi_pcc_init");
-
         if (acpi_disabled)
                 return -ENODEV;
 
@@ -733,8 +715,6 @@ static int acpi_pcc_hotkey_remove(struct acpi_device *device, int type)
 {
         struct pcc_acpi *pcc = acpi_driver_data(device);
 
-        ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_remove");
-
         if (!device || !pcc)
                 return -EINVAL;
 
@@ -757,8 +737,6 @@ static int acpi_pcc_hotkey_remove(struct acpi_device *device, int type)
 
 static void __exit acpi_pcc_exit(void)
 {
-        ACPI_FUNCTION_TRACE("acpi_pcc_exit");
-
         acpi_bus_unregister_driver(&acpi_pcc_driver);
 }
 
diff --git a/drivers/misc/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index 571b211608d1..537959d07148 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -935,14 +935,17 @@ static void sony_acpi_notify(acpi_handle handle, u32 event, void *data)
 static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
                                       void *context, void **return_value)
 {
-        struct acpi_namespace_node *node;
-        union acpi_operand_object *operand;
+        struct acpi_device_info *info;
+        struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
 
-        node = (struct acpi_namespace_node *)handle;
-        operand = (union acpi_operand_object *)node->object;
+        if (ACPI_SUCCESS(acpi_get_object_info(handle, &buffer))) {
+                info = buffer.pointer;
 
-        printk(KERN_WARNING DRV_PFX "method: name: %4.4s, args %X\n", node->name.ascii,
-               (u32) operand->method.param_count);
+                printk(KERN_WARNING DRV_PFX "method: name: %4.4s, args %X\n",
+                        (char *)&info->name, info->param_count);
+
+                kfree(buffer.pointer);
+        }
 
         return AE_OK;
 }
diff --git a/drivers/misc/tc1100-wmi.c b/drivers/platform/x86/tc1100-wmi.c
index f25e4c974dcf..b4a4aa9ee482 100644
--- a/drivers/misc/tc1100-wmi.c
+++ b/drivers/platform/x86/tc1100-wmi.c
@@ -30,7 +30,6 @@
 #include <linux/init.h>
 #include <linux/types.h>
 #include <acpi/acpi.h>
-#include <acpi/actypes.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 #include <linux/platform_device.h>
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 899766e16fa8..3478453eba7a 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -76,7 +76,6 @@
 #include <linux/workqueue.h>
 
 #include <acpi/acpi_drivers.h>
-#include <acpi/acnamesp.h>
 
 #include <linux/pci_ids.h>
 
diff --git a/drivers/acpi/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index 40e60fc2e596..40e60fc2e596 100644
--- a/drivers/acpi/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
diff --git a/drivers/acpi/wmi.c b/drivers/platform/x86/wmi.c
index 8a8b377712c9..8a8b377712c9 100644
--- a/drivers/acpi/wmi.c
+++ b/drivers/platform/x86/wmi.c
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index 383e47c392a4..2834846a185d 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -23,7 +23,6 @@
 #include <linux/pnp.h>
 #include <linux/mod_devicetable.h>
 #include <acpi/acpi_bus.h>
-#include <acpi/actypes.h>
 
 #include "../base.h"
 #include "pnpacpi.h"
diff --git a/drivers/rtc/rtc-parisc.c b/drivers/rtc/rtc-parisc.c
index 346d633655e7..c6bfa6fe1a2a 100644
--- a/drivers/rtc/rtc-parisc.c
+++ b/drivers/rtc/rtc-parisc.c
@@ -34,7 +34,8 @@ static int parisc_get_time(struct device *dev, struct rtc_time *tm)
 static int parisc_set_time(struct device *dev, struct rtc_time *tm)
 {
         struct parisc_rtc *p = dev_get_drvdata(dev);
-        unsigned long flags, ret;
+        unsigned long flags;
+        int ret;
 
         spin_lock_irqsave(&p->lock, flags);
         ret = set_rtc_time(tm);
diff --git a/fs/jffs2/compr_rubin.c b/fs/jffs2/compr_rubin.c
index c73fa89b5f8a..170d289ac785 100644
--- a/fs/jffs2/compr_rubin.c
+++ b/fs/jffs2/compr_rubin.c
@@ -22,9 +22,7 @@
 
 
 #define BIT_DIVIDER_MIPS 1043
-static int bits_mips[8] = { 277,249,290,267,229,341,212,241}; /* mips32 */
-
-#include <linux/errno.h>
+static int bits_mips[8] = { 277, 249, 290, 267, 229, 341, 212, 241};
 
 struct pushpull {
         unsigned char *buf;
@@ -43,7 +41,9 @@ struct rubin_state {
         int bits[8];
 };
 
-static inline void init_pushpull(struct pushpull *pp, char *buf, unsigned buflen, unsigned ofs, unsigned reserve)
+static inline void init_pushpull(struct pushpull *pp, char *buf,
+                                 unsigned buflen, unsigned ofs,
+                                 unsigned reserve)
 {
         pp->buf = buf;
         pp->buflen = buflen;
@@ -53,16 +53,14 @@ static inline void init_pushpull(struct pushpull *pp, char *buf, unsigned buflen
 
 static inline int pushbit(struct pushpull *pp, int bit, int use_reserved)
 {
-        if (pp->ofs >= pp->buflen - (use_reserved?0:pp->reserve)) {
+        if (pp->ofs >= pp->buflen - (use_reserved?0:pp->reserve))
                 return -ENOSPC;
-        }
 
-        if (bit) {
-                pp->buf[pp->ofs >> 3] |= (1<<(7-(pp->ofs &7)));
-        }
-        else {
-                pp->buf[pp->ofs >> 3] &= ~(1<<(7-(pp->ofs &7)));
-        }
+        if (bit)
+                pp->buf[pp->ofs >> 3] |= (1<<(7-(pp->ofs & 7)));
+        else
+                pp->buf[pp->ofs >> 3] &= ~(1<<(7-(pp->ofs & 7)));
+
         pp->ofs++;
 
         return 0;
@@ -97,6 +95,7 @@ static void init_rubin(struct rubin_state *rs, int div, int *bits)
         rs->p = (long) (2 * UPPER_BIT_RUBIN);
         rs->bit_number = (long) 0;
         rs->bit_divider = div;
+
         for (c=0; c<8; c++)
                 rs->bits[c] = bits[c];
 }
@@ -108,7 +107,8 @@ static int encode(struct rubin_state *rs, long A, long B, int symbol)
         long i0, i1;
         int ret;
 
-        while ((rs->q >= UPPER_BIT_RUBIN) || ((rs->p + rs->q) <= UPPER_BIT_RUBIN)) {
+        while ((rs->q >= UPPER_BIT_RUBIN) ||
+               ((rs->p + rs->q) <= UPPER_BIT_RUBIN)) {
                 rs->bit_number++;
 
                 ret = pushbit(&rs->pp, (rs->q & UPPER_BIT_RUBIN) ? 1 : 0, 0);
@@ -119,12 +119,12 @@ static int encode(struct rubin_state *rs, long A, long B, int symbol)
                 rs->p <<= 1;
         }
         i0 = A * rs->p / (A + B);
-        if (i0 <= 0) {
+        if (i0 <= 0)
                 i0 = 1;
-        }
-        if (i0 >= rs->p) {
+
+        if (i0 >= rs->p)
                 i0 = rs->p - 1;
-        }
+
         i1 = rs->p - i0;
 
         if (symbol == 0)
@@ -157,11 +157,13 @@ static void init_decode(struct rubin_state *rs, int div, int *bits)
         /* behalve lower */
         rs->rec_q = 0;
 
-        for (rs->bit_number = 0; rs->bit_number++ < RUBIN_REG_SIZE; rs->rec_q = rs->rec_q * 2 + (long) (pullbit(&rs->pp)))
+        for (rs->bit_number = 0; rs->bit_number++ < RUBIN_REG_SIZE;
+             rs->rec_q = rs->rec_q * 2 + (long) (pullbit(&rs->pp)))
                 ;
 }
 
-static void __do_decode(struct rubin_state *rs, unsigned long p, unsigned long q)
+static void __do_decode(struct rubin_state *rs, unsigned long p,
+                        unsigned long q)
 {
         register unsigned long lower_bits_rubin = LOWER_BITS_RUBIN;
         unsigned long rec_q;
@@ -207,12 +209,11 @@ static int decode(struct rubin_state *rs, long A, long B)
                 __do_decode(rs, p, q);
 
         i0 = A * rs->p / (A + B);
-        if (i0 <= 0) {
+        if (i0 <= 0)
                 i0 = 1;
-        }
-        if (i0 >= rs->p) {
+
+        if (i0 >= rs->p)
                 i0 = rs->p - 1;
-        }
 
         threshold = rs->q + i0;
         symbol = rs->rec_q >= threshold;
@@ -234,14 +235,15 @@ static int out_byte(struct rubin_state *rs, unsigned char byte)
         struct rubin_state rs_copy;
         rs_copy = *rs;
 
-        for (i=0;i<8;i++) {
-                ret = encode(rs, rs->bit_divider-rs->bits[i],rs->bits[i],byte&1);
+        for (i=0; i<8; i++) {
+                ret = encode(rs, rs->bit_divider-rs->bits[i],
+                             rs->bits[i], byte & 1);
                 if (ret) {
                         /* Failed. Restore old state */
                         *rs = rs_copy;
                         return ret;
                 }
-                byte=byte>>1;
+                byte >>= 1 ;
         }
         return 0;
 }
@@ -251,7 +253,8 @@ static int in_byte(struct rubin_state *rs)
         int i, result = 0, bit_divider = rs->bit_divider;
 
         for (i = 0; i < 8; i++)
-                result |= decode(rs, bit_divider - rs->bits[i], rs->bits[i]) << i;
+                result |= decode(rs, bit_divider - rs->bits[i],
+                                 rs->bits[i]) << i;
 
         return result;
 }
@@ -259,7 +262,8 @@ static int in_byte(struct rubin_state *rs)
 
 
 static int rubin_do_compress(int bit_divider, int *bits, unsigned char *data_in,
-                      unsigned char *cpage_out, uint32_t *sourcelen, uint32_t *dstlen)
+                             unsigned char *cpage_out, uint32_t *sourcelen,
+                             uint32_t *dstlen)
         {
         int outpos = 0;
         int pos=0;
@@ -295,7 +299,8 @@ static int rubin_do_compress(int bit_divider, int *bits, unsigned char *data_in,
 int jffs2_rubinmips_compress(unsigned char *data_in, unsigned char *cpage_out,
                    uint32_t *sourcelen, uint32_t *dstlen, void *model)
 {
-        return rubin_do_compress(BIT_DIVIDER_MIPS, bits_mips, data_in, cpage_out, sourcelen, dstlen);
+        return rubin_do_compress(BIT_DIVIDER_MIPS, bits_mips, data_in,
+                                 cpage_out, sourcelen, dstlen);
 }
 #endif
 static int jffs2_dynrubin_compress(unsigned char *data_in,
@@ -316,9 +321,8 @@ static int jffs2_dynrubin_compress(unsigned char *data_in,
                 return -1;
 
         memset(histo, 0, 256);
-        for (i=0; i<mysrclen; i++) {
+        for (i=0; i<mysrclen; i++)
                 histo[data_in[i]]++;
-        }
         memset(bits, 0, sizeof(int)*8);
         for (i=0; i<256; i++) {
                 if (i&128)
@@ -346,7 +350,8 @@ static int jffs2_dynrubin_compress(unsigned char *data_in,
                 cpage_out[i] = bits[i];
         }
 
-        ret = rubin_do_compress(256, bits, data_in, cpage_out+8, &mysrclen, &mydstlen);
+        ret = rubin_do_compress(256, bits, data_in, cpage_out+8, &mysrclen,
+                                &mydstlen);
         if (ret)
                 return ret;
 
@@ -363,8 +368,10 @@ static int jffs2_dynrubin_compress(unsigned char *data_in,
         return 0;
 }
 
-static void rubin_do_decompress(int bit_divider, int *bits, unsigned char *cdata_in,
-                         unsigned char *page_out, uint32_t srclen, uint32_t destlen)
+static void rubin_do_decompress(int bit_divider, int *bits,
+                                unsigned char *cdata_in, 
+                                unsigned char *page_out, uint32_t srclen,
+                                uint32_t destlen)
 {
         int outpos = 0;
         struct rubin_state rs;
@@ -372,9 +379,8 @@ static void rubin_do_decompress(int bit_divider, int *bits, unsigned char *cdata
         init_pushpull(&rs.pp, cdata_in, srclen, 0, 0);
         init_decode(&rs, bit_divider, bits);
 
-        while (outpos < destlen) {
+        while (outpos < destlen)
                 page_out[outpos++] = in_byte(&rs);
-        }
 }
 
 
@@ -383,7 +389,8 @@ static int jffs2_rubinmips_decompress(unsigned char *data_in,
                                       uint32_t sourcelen, uint32_t dstlen,
                                       void *model)
 {
-        rubin_do_decompress(BIT_DIVIDER_MIPS, bits_mips, data_in, cpage_out, sourcelen, dstlen);
+        rubin_do_decompress(BIT_DIVIDER_MIPS, bits_mips, data_in,
+                            cpage_out, sourcelen, dstlen);
         return 0;
 }
 
@@ -398,52 +405,53 @@ static int jffs2_dynrubin_decompress(unsigned char *data_in,
         for (c=0; c<8; c++)
                 bits[c] = data_in[c];
 
-        rubin_do_decompress(256, bits, data_in+8, cpage_out, sourcelen-8, dstlen);
+        rubin_do_decompress(256, bits, data_in+8, cpage_out, sourcelen-8,
+                            dstlen);
         return 0;
 }
 
 static struct jffs2_compressor jffs2_rubinmips_comp = {
-    .priority = JFFS2_RUBINMIPS_PRIORITY,
-    .name = "rubinmips",
-    .compr = JFFS2_COMPR_DYNRUBIN,
-    .compress = NULL, /*&jffs2_rubinmips_compress,*/
-    .decompress = &jffs2_rubinmips_decompress,
+        .priority = JFFS2_RUBINMIPS_PRIORITY,
+        .name = "rubinmips",
+        .compr = JFFS2_COMPR_DYNRUBIN,
+        .compress = NULL, /*&jffs2_rubinmips_compress,*/
+        .decompress = &jffs2_rubinmips_decompress,
 #ifdef JFFS2_RUBINMIPS_DISABLED
-    .disabled = 1,
+        .disabled = 1,
 #else
-    .disabled = 0,
+        .disabled = 0,
 #endif
 };
 
 int jffs2_rubinmips_init(void)
 {
-    return jffs2_register_compressor(&jffs2_rubinmips_comp);
+        return jffs2_register_compressor(&jffs2_rubinmips_comp);
 }
 
 void jffs2_rubinmips_exit(void)
 {
-    jffs2_unregister_compressor(&jffs2_rubinmips_comp);
+        jffs2_unregister_compressor(&jffs2_rubinmips_comp);
 }
 
 static struct jffs2_compressor jffs2_dynrubin_comp = {
-    .priority = JFFS2_DYNRUBIN_PRIORITY,
-    .name = "dynrubin",
-    .compr = JFFS2_COMPR_RUBINMIPS,
-    .compress = jffs2_dynrubin_compress,
-    .decompress = &jffs2_dynrubin_decompress,
+        .priority = JFFS2_DYNRUBIN_PRIORITY,
+        .name = "dynrubin",
+        .compr = JFFS2_COMPR_RUBINMIPS,
+        .compress = jffs2_dynrubin_compress,
+        .decompress = &jffs2_dynrubin_decompress,
 #ifdef JFFS2_DYNRUBIN_DISABLED
-    .disabled = 1,
+        .disabled = 1,
 #else
-    .disabled = 0,
+        .disabled = 0,
 #endif
 };
 
 int jffs2_dynrubin_init(void)
 {
-    return jffs2_register_compressor(&jffs2_dynrubin_comp);
+        return jffs2_register_compressor(&jffs2_dynrubin_comp);
 }
 
 void jffs2_dynrubin_exit(void)
 {
-    jffs2_unregister_compressor(&jffs2_dynrubin_comp);
+        jffs2_unregister_compressor(&jffs2_dynrubin_comp);
 }
diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c
index 259461b910af..c32b4a1ad6cf 100644
--- a/fs/jffs2/erase.c
+++ b/fs/jffs2/erase.c
@@ -175,7 +175,7 @@ static void jffs2_erase_failed(struct jffs2_sb_info *c, struct jffs2_eraseblock
 {
         /* For NAND, if the failure did not occur at the device level for a
            specific physical page, don't bother updating the bad block table. */
-        if (jffs2_cleanmarker_oob(c) && (bad_offset != MTD_FAIL_ADDR_UNKNOWN)) {
+        if (jffs2_cleanmarker_oob(c) && (bad_offset != (uint32_t)MTD_FAIL_ADDR_UNKNOWN)) {
                 /* We had a device-level failure to erase.  Let's see if we've
                    failed too many times. */
                 if (!jffs2_write_nand_badblock(c, jeb, bad_offset)) {
@@ -209,7 +209,8 @@ static void jffs2_erase_callback(struct erase_info *instr)
         struct erase_priv_struct *priv = (void *)instr->priv;
 
         if(instr->state != MTD_ERASE_DONE) {
-                printk(KERN_WARNING "Erase at 0x%08x finished, but state != MTD_ERASE_DONE. State is 0x%x instead.\n", instr->addr, instr->state);
+                printk(KERN_WARNING "Erase at 0x%08llx finished, but state != MTD_ERASE_DONE. State is 0x%x instead.\n",
+                        (unsigned long long)instr->addr, instr->state);
                 jffs2_erase_failed(priv->c, priv->jeb, instr->fail_addr);
         } else {
                 jffs2_erase_succeeded(priv->c, priv->jeb);
diff --git a/include/acpi/acdisasm.h b/include/acpi/acdisasm.h
deleted file mode 100644
index 0c1ed387073c..000000000000
--- a/include/acpi/acdisasm.h
+++ /dev/null
@@ -1,445 +0,0 @@
-/******************************************************************************
- *
- * Name: acdisasm.h - AML disassembler
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2008, Intel Corp.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions, and the following disclaimer,
- *    without modification.
- * 2. Redistributions in binary form must reproduce at minimum a disclaimer
- *    substantially similar to the "NO WARRANTY" disclaimer below
- *    ("Disclaimer") and any redistribution must be conditioned upon
- *    including a substantially similar Disclaimer requirement for further
- *    binary redistribution.
- * 3. Neither the names of the above-listed copyright holders nor the names
- *    of any contributors may be used to endorse or promote products derived
- *    from this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * NO WARRANTY
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- */
-
-#ifndef __ACDISASM_H__
-#define __ACDISASM_H__
-
-#include "amlresrc.h"
-
-#define BLOCK_NONE              0
-#define BLOCK_PAREN             1
-#define BLOCK_BRACE             2
-#define BLOCK_COMMA_LIST        4
-#define ACPI_DEFAULT_RESNAME    *(u32 *) "__RD"
-
-struct acpi_external_list {
-        char *path;
-        char *internal_path;
-        struct acpi_external_list *next;
-        u32 value;
-        u16 length;
-        u8 type;
-};
-
-extern struct acpi_external_list *acpi_gbl_external_list;
-
-typedef const struct acpi_dmtable_info {
-        u8 opcode;
-        u8 offset;
-        char *name;
-
-} acpi_dmtable_info;
-
-/*
- * Values for Opcode above.
- * Note: 0-7 must not change, used as a flag shift value
- */
-#define ACPI_DMT_FLAG0                  0
-#define ACPI_DMT_FLAG1                  1
-#define ACPI_DMT_FLAG2                  2
-#define ACPI_DMT_FLAG3                  3
-#define ACPI_DMT_FLAG4                  4
-#define ACPI_DMT_FLAG5                  5
-#define ACPI_DMT_FLAG6                  6
-#define ACPI_DMT_FLAG7                  7
-#define ACPI_DMT_FLAGS0                 8
-#define ACPI_DMT_FLAGS2                 9
-#define ACPI_DMT_UINT8                  10
-#define ACPI_DMT_UINT16                 11
-#define ACPI_DMT_UINT24                 12
-#define ACPI_DMT_UINT32                 13
-#define ACPI_DMT_UINT56                 14
-#define ACPI_DMT_UINT64                 15
-#define ACPI_DMT_STRING                 16
-#define ACPI_DMT_NAME4                  17
-#define ACPI_DMT_NAME6                  18
-#define ACPI_DMT_NAME8                  19
-#define ACPI_DMT_CHKSUM                 20
-#define ACPI_DMT_SPACEID                21
-#define ACPI_DMT_GAS                    22
-#define ACPI_DMT_ASF                    23
-#define ACPI_DMT_DMAR                   24
-#define ACPI_DMT_HEST                   25
-#define ACPI_DMT_HESTNTFY               26
-#define ACPI_DMT_HESTNTYP               27
-#define ACPI_DMT_MADT                   28
-#define ACPI_DMT_SRAT                   29
-#define ACPI_DMT_EXIT                   30
-#define ACPI_DMT_SIG                    31
-
-typedef
-void (*acpi_dmtable_handler) (struct acpi_table_header * table);
-
-struct acpi_dmtable_data {
-        char *signature;
-        struct acpi_dmtable_info *table_info;
-        acpi_dmtable_handler table_handler;
-        char *name;
-};
-
-struct acpi_op_walk_info {
-        u32 level;
-        u32 last_level;
-        u32 count;
-        u32 bit_offset;
-        u32 flags;
-        struct acpi_walk_state *walk_state;
-};
-
-typedef
-acpi_status(*asl_walk_callback) (union acpi_parse_object * op,
-                                 u32 level, void *context);
-
-struct acpi_resource_tag {
-        u32 bit_index;
-        char *tag;
-};
-
-/* Strings used for decoding flags to ASL keywords */
-
-extern const char *acpi_gbl_word_decode[];
-extern const char *acpi_gbl_irq_decode[];
-extern const char *acpi_gbl_lock_rule[];
-extern const char *acpi_gbl_access_types[];
-extern const char *acpi_gbl_update_rules[];
-extern const char *acpi_gbl_match_ops[];
-
-extern struct acpi_dmtable_info acpi_dm_table_info_asf0[];
-extern struct acpi_dmtable_info acpi_dm_table_info_asf1[];
-extern struct acpi_dmtable_info acpi_dm_table_info_asf1a[];
-extern struct acpi_dmtable_info acpi_dm_table_info_asf2[];
-extern struct acpi_dmtable_info acpi_dm_table_info_asf2a[];
-extern struct acpi_dmtable_info acpi_dm_table_info_asf3[];
-extern struct acpi_dmtable_info acpi_dm_table_info_asf4[];
-extern struct acpi_dmtable_info acpi_dm_table_info_asf_hdr[];
-extern struct acpi_dmtable_info acpi_dm_table_info_boot[];
-extern struct acpi_dmtable_info acpi_dm_table_info_bert[];
-extern struct acpi_dmtable_info acpi_dm_table_info_cpep[];
-extern struct acpi_dmtable_info acpi_dm_table_info_cpep0[];
-extern struct acpi_dmtable_info acpi_dm_table_info_dbgp[];
-extern struct acpi_dmtable_info acpi_dm_table_info_dmar[];
-extern struct acpi_dmtable_info acpi_dm_table_info_dmar_hdr[];
-extern struct acpi_dmtable_info acpi_dm_table_info_dmar_scope[];
-extern struct acpi_dmtable_info acpi_dm_table_info_dmar0[];
-extern struct acpi_dmtable_info acpi_dm_table_info_dmar1[];
-extern struct acpi_dmtable_info acpi_dm_table_info_dmar2[];
-extern struct acpi_dmtable_info acpi_dm_table_info_ecdt[];
-extern struct acpi_dmtable_info acpi_dm_table_info_einj[];
-extern struct acpi_dmtable_info acpi_dm_table_info_einj0[];
-extern struct acpi_dmtable_info acpi_dm_table_info_erst[];
-extern struct acpi_dmtable_info acpi_dm_table_info_facs[];
-extern struct acpi_dmtable_info acpi_dm_table_info_fadt1[];
-extern struct acpi_dmtable_info acpi_dm_table_info_fadt2[];
-extern struct acpi_dmtable_info acpi_dm_table_info_gas[];
-extern struct acpi_dmtable_info acpi_dm_table_info_header[];
-extern struct acpi_dmtable_info acpi_dm_table_info_hest[];
-extern struct acpi_dmtable_info acpi_dm_table_info_hest9[];
-extern struct acpi_dmtable_info acpi_dm_table_info_hest_notify[];
-extern struct acpi_dmtable_info acpi_dm_table_info_hpet[];
-extern struct acpi_dmtable_info acpi_dm_table_info_madt[];
-extern struct acpi_dmtable_info acpi_dm_table_info_madt0[];
-extern struct acpi_dmtable_info acpi_dm_table_info_madt1[];
-extern struct acpi_dmtable_info acpi_dm_table_info_madt2[];
-extern struct acpi_dmtable_info acpi_dm_table_info_madt3[];
-extern struct acpi_dmtable_info acpi_dm_table_info_madt4[];
-extern struct acpi_dmtable_info acpi_dm_table_info_madt5[];
-extern struct acpi_dmtable_info acpi_dm_table_info_madt6[];
-extern struct acpi_dmtable_info acpi_dm_table_info_madt7[];
-extern struct acpi_dmtable_info acpi_dm_table_info_madt8[];
-extern struct acpi_dmtable_info acpi_dm_table_info_madt9[];
-extern struct acpi_dmtable_info acpi_dm_table_info_madt10[];
-extern struct acpi_dmtable_info acpi_dm_table_info_madt_hdr[];
-extern struct acpi_dmtable_info acpi_dm_table_info_mcfg[];
-extern struct acpi_dmtable_info acpi_dm_table_info_mcfg0[];
-extern struct acpi_dmtable_info acpi_dm_table_info_rsdp1[];
-extern struct acpi_dmtable_info acpi_dm_table_info_rsdp2[];
-extern struct acpi_dmtable_info acpi_dm_table_info_sbst[];
-extern struct acpi_dmtable_info acpi_dm_table_info_slic[];
-extern struct acpi_dmtable_info acpi_dm_table_info_slit[];
-extern struct acpi_dmtable_info acpi_dm_table_info_spcr[];
-extern struct acpi_dmtable_info acpi_dm_table_info_spmi[];
-extern struct acpi_dmtable_info acpi_dm_table_info_srat[];
-extern struct acpi_dmtable_info acpi_dm_table_info_srat_hdr[];
-extern struct acpi_dmtable_info acpi_dm_table_info_srat0[];
-extern struct acpi_dmtable_info acpi_dm_table_info_srat1[];
-extern struct acpi_dmtable_info acpi_dm_table_info_srat2[];
-extern struct acpi_dmtable_info acpi_dm_table_info_tcpa[];
-extern struct acpi_dmtable_info acpi_dm_table_info_wdrt[];
-
-/*
- * dmtable
- */
-void acpi_dm_dump_data_table(struct acpi_table_header *table);
-
-acpi_status
-acpi_dm_dump_table(u32 table_length,
-                   u32 table_offset,
-                   void *table,
-                   u32 sub_table_length, struct acpi_dmtable_info *info);
-
-void acpi_dm_line_header(u32 offset, u32 byte_length, char *name);
-
-void acpi_dm_line_header2(u32 offset, u32 byte_length, char *name, u32 value);
-
-/*
- * dmtbdump
- */
-void acpi_dm_dump_asf(struct acpi_table_header *table);
-
-void acpi_dm_dump_cpep(struct acpi_table_header *table);
-
-void acpi_dm_dump_dmar(struct acpi_table_header *table);
-
-void acpi_dm_dump_einj(struct acpi_table_header *table);
-
-void acpi_dm_dump_erst(struct acpi_table_header *table);
-
-void acpi_dm_dump_fadt(struct acpi_table_header *table);
-
-void acpi_dm_dump_hest(struct acpi_table_header *table);
-
-void acpi_dm_dump_mcfg(struct acpi_table_header *table);
-
-void acpi_dm_dump_madt(struct acpi_table_header *table);
-
-u32 acpi_dm_dump_rsdp(struct acpi_table_header *table);
-
-void acpi_dm_dump_rsdt(struct acpi_table_header *table);
-
-void acpi_dm_dump_slit(struct acpi_table_header *table);
-
-void acpi_dm_dump_srat(struct acpi_table_header *table);
-
-void acpi_dm_dump_xsdt(struct acpi_table_header *table);
-
-/*
- * dmwalk
- */
-void
-acpi_dm_disassemble(struct acpi_walk_state *walk_state,
-                    union acpi_parse_object *origin, u32 num_opcodes);
-
-void
-acpi_dm_walk_parse_tree(union acpi_parse_object *op,
-                        asl_walk_callback descending_callback,
-                        asl_walk_callback ascending_callback, void *context);
-
-/*
- * dmopcode
- */
-void
-acpi_dm_disassemble_one_op(struct acpi_walk_state *walk_state,
-                           struct acpi_op_walk_info *info,
-                           union acpi_parse_object *op);
-
-void acpi_dm_decode_internal_object(union acpi_operand_object *obj_desc);
-
-u32 acpi_dm_list_type(union acpi_parse_object *op);
-
-void acpi_dm_method_flags(union acpi_parse_object *op);
-
-void acpi_dm_field_flags(union acpi_parse_object *op);
-
-void acpi_dm_address_space(u8 space_id);
-
-void acpi_dm_region_flags(union acpi_parse_object *op);
-
-void acpi_dm_match_op(union acpi_parse_object *op);
-
-u8 acpi_dm_comma_if_list_member(union acpi_parse_object *op);
-
-void acpi_dm_comma_if_field_member(union acpi_parse_object *op);
-
-/*
- * dmnames
- */
-u32 acpi_dm_dump_name(char *name);
-
-acpi_status
-acpi_ps_display_object_pathname(struct acpi_walk_state *walk_state,
-                                union acpi_parse_object *op);
-
-void acpi_dm_namestring(char *name);
-
-/*
- * dmobject
- */
-void
-acpi_dm_display_internal_object(union acpi_operand_object *obj_desc,
-                                struct acpi_walk_state *walk_state);
-
-void acpi_dm_display_arguments(struct acpi_walk_state *walk_state);
-
-void acpi_dm_display_locals(struct acpi_walk_state *walk_state);
-
-void
-acpi_dm_dump_method_info(acpi_status status,
-                         struct acpi_walk_state *walk_state,
-                         union acpi_parse_object *op);
-
-/*
- * dmbuffer
- */
-void acpi_dm_disasm_byte_list(u32 level, u8 * byte_data, u32 byte_count);
-
-void
-acpi_dm_byte_list(struct acpi_op_walk_info *info, union acpi_parse_object *op);
-
-void acpi_dm_is_eisa_id(union acpi_parse_object *op);
-
-void acpi_dm_eisa_id(u32 encoded_id);
-
-u8 acpi_dm_is_unicode_buffer(union acpi_parse_object *op);
-
-u8 acpi_dm_is_string_buffer(union acpi_parse_object *op);
-
-/*
- * dmresrc
- */
-void acpi_dm_dump_integer8(u8 value, char *name);
-
-void acpi_dm_dump_integer16(u16 value, char *name);
-
-void acpi_dm_dump_integer32(u32 value, char *name);
-
-void acpi_dm_dump_integer64(u64 value, char *name);
-
-void
-acpi_dm_resource_template(struct acpi_op_walk_info *info,
-                          union acpi_parse_object *op,
-                          u8 * byte_data, u32 byte_count);
-
-acpi_status acpi_dm_is_resource_template(union acpi_parse_object *op);
-
-void acpi_dm_indent(u32 level);
-
-void acpi_dm_bit_list(u16 mask);
-
-void acpi_dm_decode_attribute(u8 attribute);
-
-void acpi_dm_descriptor_name(void);
-
-/*
- * dmresrcl
- */
-void
-acpi_dm_word_descriptor(union aml_resource *resource, u32 length, u32 level);
-
-void
-acpi_dm_dword_descriptor(union aml_resource *resource, u32 length, u32 level);
-
-void
-acpi_dm_extended_descriptor(union aml_resource *resource,
-                            u32 length, u32 level);
-
-void
-acpi_dm_qword_descriptor(union aml_resource *resource, u32 length, u32 level);
-
-void
-acpi_dm_memory24_descriptor(union aml_resource *resource,
-                            u32 length, u32 level);
-
-void
-acpi_dm_memory32_descriptor(union aml_resource *resource,
-                            u32 length, u32 level);
-
-void
-acpi_dm_fixed_memory32_descriptor(union aml_resource *resource,
-                                  u32 length, u32 level);
-
-void
-acpi_dm_generic_register_descriptor(union aml_resource *resource,
-                                    u32 length, u32 level);
-
-void
-acpi_dm_interrupt_descriptor(union aml_resource *resource,
-                             u32 length, u32 level);
-
-void
-acpi_dm_vendor_large_descriptor(union aml_resource *resource,
-                                u32 length, u32 level);
-
-void acpi_dm_vendor_common(char *name, u8 * byte_data, u32 length, u32 level);
-
-/*
- * dmresrcs
- */
-void
-acpi_dm_irq_descriptor(union aml_resource *resource, u32 length, u32 level);
-
-void
-acpi_dm_dma_descriptor(union aml_resource *resource, u32 length, u32 level);
-
-void acpi_dm_io_descriptor(union aml_resource *resource, u32 length, u32 level);
-
-void
-acpi_dm_fixed_io_descriptor(union aml_resource *resource,
-                            u32 length, u32 level);
-
-void
-acpi_dm_start_dependent_descriptor(union aml_resource *resource,
-                                   u32 length, u32 level);
-
-void
-acpi_dm_end_dependent_descriptor(union aml_resource *resource,
-                                 u32 length, u32 level);
-
-void
-acpi_dm_vendor_small_descriptor(union aml_resource *resource,
-                                u32 length, u32 level);
-
-/*
- * dmutils
- */
-void acpi_dm_add_to_external_list(char *path, u8 type, u32 value);
-
-/*
- * dmrestag
- */
-void acpi_dm_find_resources(union acpi_parse_object *root);
-
-void
-acpi_dm_check_resource_reference(union acpi_parse_object *op,
-                                 struct acpi_walk_state *walk_state);
-
-#endif                          /* __ACDISASM_H__ */
diff --git a/include/acpi/acexcep.h b/include/acpi/acexcep.h
index 84f5cb242863..eda04546cdf6 100644
--- a/include/acpi/acexcep.h
+++ b/include/acpi/acexcep.h
@@ -153,8 +153,9 @@
 #define AE_AML_CIRCULAR_REFERENCE       (acpi_status) (0x001E | AE_CODE_AML)
 #define AE_AML_BAD_RESOURCE_LENGTH      (acpi_status) (0x001F | AE_CODE_AML)
 #define AE_AML_ILLEGAL_ADDRESS          (acpi_status) (0x0020 | AE_CODE_AML)
+#define AE_AML_INFINITE_LOOP            (acpi_status) (0x0021 | AE_CODE_AML)
 
-#define AE_CODE_AML_MAX                 0x0020
+#define AE_CODE_AML_MAX                 0x0021
 
 /*
  * Internal exceptions used for control
@@ -175,6 +176,8 @@
 
 #define AE_CODE_CTRL_MAX                0x000D
 
+/* Exception strings for acpi_format_exception */
+
 #ifdef DEFINE_ACPI_GLOBALS
 
 /*
@@ -267,6 +270,7 @@ char const *acpi_gbl_exception_names_aml[] = {
         "AE_AML_CIRCULAR_REFERENCE",
         "AE_AML_BAD_RESOURCE_LENGTH",
         "AE_AML_ILLEGAL_ADDRESS",
+        "AE_AML_INFINITE_LOOP"
 };
 
 char const *acpi_gbl_exception_names_ctrl[] = {
diff --git a/include/acpi/acoutput.h b/include/acpi/acoutput.h
index db8852d8bcf7..5c823d5ab783 100644
--- a/include/acpi/acoutput.h
+++ b/include/acpi/acoutput.h
@@ -45,9 +45,9 @@
 #define __ACOUTPUT_H__
 
 /*
- * Debug levels and component IDs.  These are used to control the
- * granularity of the output of the DEBUG_PRINT macro -- on a per-
- * component basis and a per-exception-type basis.
+ * Debug levels and component IDs. These are used to control the
+ * granularity of the output of the ACPI_DEBUG_PRINT macro -- on a
+ * per-component basis and a per-exception-type basis.
  */
 
 /* Component IDs are used in the global "DebugLayer" */
@@ -69,8 +69,10 @@
 
 #define ACPI_COMPILER               0x00001000
 #define ACPI_TOOLS                  0x00002000
+#define ACPI_EXAMPLE                0x00004000
+#define ACPI_DRIVER                 0x00008000
 
-#define ACPI_ALL_COMPONENTS         0x00003FFF
+#define ACPI_ALL_COMPONENTS         0x0000FFFF
 #define ACPI_COMPONENT_DEFAULT      (ACPI_ALL_COMPONENTS)
 
 /* Component IDs reserved for ACPI drivers */
@@ -78,7 +80,7 @@
 #define ACPI_ALL_DRIVERS            0xFFFF0000
 
 /*
- * Raw debug output levels, do not use these in the DEBUG_PRINT macros
+ * Raw debug output levels, do not use these in the ACPI_DEBUG_PRINT macros
  */
 #define ACPI_LV_INIT                0x00000001
 #define ACPI_LV_DEBUG_OBJECT        0x00000002
@@ -176,4 +178,95 @@
 #define ACPI_NORMAL_DEFAULT         (ACPI_LV_INIT | ACPI_LV_DEBUG_OBJECT)
 #define ACPI_DEBUG_ALL              (ACPI_LV_AML_DISASSEMBLE | ACPI_LV_ALL_EXCEPTIONS | ACPI_LV_ALL)
 
+#if defined (ACPI_DEBUG_OUTPUT) || !defined (ACPI_NO_ERROR_MESSAGES)
+/*
+ * Module name is included in both debug and non-debug versions primarily for
+ * error messages. The __FILE__ macro is not very useful for this, because it
+ * often includes the entire pathname to the module
+ */
+#define ACPI_MODULE_NAME(name)          static const char ACPI_UNUSED_VAR _acpi_module_name[] = name;
+#else
+#define ACPI_MODULE_NAME(name)
+#endif
+
+/*
+ * Ascii error messages can be configured out
+ */
+#ifndef ACPI_NO_ERROR_MESSAGES
+#define AE_INFO                         _acpi_module_name, __LINE__
+
+/*
+ * Error reporting. Callers module and line number are inserted by AE_INFO,
+ * the plist contains a set of parens to allow variable-length lists.
+ * These macros are used for both the debug and non-debug versions of the code.
+ */
+#define ACPI_INFO(plist)                acpi_info plist
+#define ACPI_WARNING(plist)             acpi_warning plist
+#define ACPI_EXCEPTION(plist)           acpi_exception plist
+#define ACPI_ERROR(plist)               acpi_error plist
+
+#else
+
+/* No error messages */
+
+#define ACPI_INFO(plist)
+#define ACPI_WARNING(plist)
+#define ACPI_EXCEPTION(plist)
+#define ACPI_ERROR(plist)
+
+#endif                          /* ACPI_NO_ERROR_MESSAGES */
+
+/*
+ * Debug macros that are conditionally compiled
+ */
+#ifdef ACPI_DEBUG_OUTPUT
+
+/*
+ * If ACPI_GET_FUNCTION_NAME was not defined in the compiler-dependent header,
+ * define it now. This is the case where there the compiler does not support
+ * a __FUNCTION__ macro or equivalent.
+ */
+#ifndef ACPI_GET_FUNCTION_NAME
+#define ACPI_GET_FUNCTION_NAME          _acpi_function_name
+
+/*
+ * The Name parameter should be the procedure name as a quoted string.
+ * The function name is also used by the function exit macros below.
+ * Note: (const char) is used to be compatible with the debug interfaces
+ * and macros such as __FUNCTION__.
+ */
+#define ACPI_FUNCTION_NAME(name)        static const char _acpi_function_name[] = #name;
+
+#else
+/* Compiler supports __FUNCTION__ (or equivalent) -- Ignore this macro */
+
+#define ACPI_FUNCTION_NAME(name)
+#endif                          /* ACPI_GET_FUNCTION_NAME */
+
+/*
+ * Common parameters used for debug output functions:
+ * line number, function name, module(file) name, component ID
+ */
+#define ACPI_DEBUG_PARAMETERS           __LINE__, ACPI_GET_FUNCTION_NAME, _acpi_module_name, _COMPONENT
+
+/*
+ * Master debug print macros
+ * Print message if and only if:
+ *    1) Debug print for the current component is enabled
+ *    2) Debug error level or trace level for the print statement is enabled
+ */
+#define ACPI_DEBUG_PRINT(plist)         acpi_debug_print plist
+#define ACPI_DEBUG_PRINT_RAW(plist)     acpi_debug_print_raw plist
+
+#else
+/*
+ * This is the non-debug case -- make everything go away,
+ * leaving no executable debug code!
+ */
+#define ACPI_FUNCTION_NAME(a)
+#define ACPI_DEBUG_PRINT(pl)
+#define ACPI_DEBUG_PRINT_RAW(pl)
+
+#endif                          /* ACPI_DEBUG_OUTPUT */
+
 #endif                          /* __ACOUTPUT_H__ */
diff --git a/include/acpi/acpi.h b/include/acpi/acpi.h
index c515ef6cc89e..472b7bf0c5d4 100644
--- a/include/acpi/acpi.h
+++ b/include/acpi/acpi.h
@@ -1,6 +1,6 @@
 /******************************************************************************
  *
- * Name: acpi.h - Master include file, Publics and external data.
+ * Name: acpi.h - Master public include file used to interface to ACPICA
  *
  *****************************************************************************/
 
@@ -45,25 +45,22 @@
 #define __ACPI_H__
 
 /*
- * Common includes for all ACPI driver files
- * We put them here because we don't want to duplicate them
- * in the rest of the source code again and again.
+ * Public include files for use by code that will interface to ACPICA.
+ *
+ * Information includes the ACPICA data types, names, exceptions, and
+ * external interface prototypes. Also included are the definitions for
+ * all ACPI tables (FADT, MADT, etc.)
+ *
+ * Note: The order of these include files is important.
  */
-#include "acnames.h"            /* Global ACPI names and strings */
-#include "acconfig.h"           /* Configuration constants */
-#include "platform/acenv.h"     /* Target environment specific items */
-#include "actypes.h"            /* Fundamental common data types */
-#include "acexcep.h"            /* ACPI exception codes */
-#include "acmacros.h"           /* C macros */
+#include "platform/acenv.h"     /* Environment-specific items */
+#include "acnames.h"            /* Common ACPI names and strings */
+#include "actypes.h"            /* ACPICA data types and structures */
+#include "acexcep.h"            /* ACPICA exceptions */
 #include "actbl.h"              /* ACPI table definitions */
-#include "aclocal.h"            /* Internal data types */
 #include "acoutput.h"           /* Error output and Debug macros */
-#include "acpiosxf.h"           /* Interfaces to the ACPI-to-OS layer */
+#include "acrestyp.h"           /* Resource Descriptor structs */
+#include "acpiosxf.h"           /* OSL interfaces (ACPICA-to-OS) */
 #include "acpixf.h"             /* ACPI core subsystem external interfaces */
-#include "acobject.h"           /* ACPI internal object */
-#include "acstruct.h"           /* Common structures */
-#include "acglobal.h"           /* All global variables */
-#include "achware.h"            /* Hardware defines and interfaces */
-#include "acutils.h"            /* Utility interfaces */
 
 #endif                          /* __ACPI_H__ */
diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h
index b91440ac0d16..a62720a7edc0 100644
--- a/include/acpi/acpiosxf.h
+++ b/include/acpi/acpiosxf.h
@@ -121,8 +121,11 @@ acpi_os_wait_semaphore(acpi_semaphore handle, u32 units, u16 timeout);
 acpi_status acpi_os_signal_semaphore(acpi_semaphore handle, u32 units);
 
 /*
- * Mutex primitives
+ * Mutex primitives. May be configured to use semaphores instead via
+ * ACPI_MUTEX_TYPE (see platform/acenv.h)
  */
+#if (ACPI_MUTEX_TYPE != ACPI_BINARY_SEMAPHORE)
+
 acpi_status acpi_os_create_mutex(acpi_mutex * out_handle);
 
 void acpi_os_delete_mutex(acpi_mutex handle);
@@ -130,13 +133,7 @@ void acpi_os_delete_mutex(acpi_mutex handle);
 acpi_status acpi_os_acquire_mutex(acpi_mutex handle, u16 timeout);
 
 void acpi_os_release_mutex(acpi_mutex handle);
-
-/* Temporary macros for Mutex* interfaces, map to existing semaphore xfaces */
-
-#define acpi_os_create_mutex(out_handle)    acpi_os_create_semaphore (1, 1, out_handle)
-#define acpi_os_delete_mutex(handle)        (void) acpi_os_delete_semaphore (handle)
-#define acpi_os_acquire_mutex(handle,time)  acpi_os_wait_semaphore (handle, 1, time)
-#define acpi_os_release_mutex(handle)       (void) acpi_os_signal_semaphore (handle, 1)
+#endif
 
 /*
  * Memory allocation and mapping
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index 33bc0e3b1954..c8e8cf45830f 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -45,9 +45,32 @@
 #ifndef __ACXFACE_H__
 #define __ACXFACE_H__
 
+/* Current ACPICA subsystem version in YYYYMMDD format */
+
+#define ACPI_CA_VERSION                 0x20081204
+
 #include "actypes.h"
 #include "actbl.h"
 
+extern u8 acpi_gbl_permanent_mmap;
+
+/*
+ * Globals that are publically available, allowing for
+ * run time configuration
+ */
+extern u32 acpi_dbg_level;
+extern u32 acpi_dbg_layer;
+extern u8 acpi_gbl_enable_interpreter_slack;
+extern u8 acpi_gbl_all_methods_serialized;
+extern u8 acpi_gbl_create_osi_method;
+extern u8 acpi_gbl_leave_wake_gpes_disabled;
+extern acpi_name acpi_gbl_trace_method_name;
+extern u32 acpi_gbl_trace_flags;
+
+extern u32 acpi_current_gpe_count;
+extern struct acpi_table_fadt acpi_gbl_FADT;
+
+extern u32 acpi_rsdt_forced;
 /*
  * Global interfaces
  */
@@ -79,11 +102,6 @@ const char *acpi_format_exception(acpi_status exception);
 
 acpi_status acpi_purge_cached_objects(void);
 
-#ifdef ACPI_FUTURE_USAGE
-acpi_status
-acpi_install_initialization_handler(acpi_init_handler handler, u32 function);
-#endif
-
 /*
  * ACPI Memory management
  */
@@ -193,9 +211,12 @@ acpi_status acpi_get_id(acpi_handle object, acpi_owner_id * out_type);
 acpi_status acpi_get_parent(acpi_handle object, acpi_handle * out_handle);
 
 /*
- * Event handler interfaces
+ * Handler interfaces
  */
 acpi_status
+acpi_install_initialization_handler(acpi_init_handler handler, u32 function);
+
+acpi_status
 acpi_install_fixed_event_handler(u32 acpi_event,
                                  acpi_event_handler handler, void *context);
 
@@ -227,6 +248,10 @@ acpi_install_gpe_handler(acpi_handle gpe_device,
                          u32 gpe_number,
                          u32 type, acpi_event_handler address, void *context);
 
+acpi_status
+acpi_remove_gpe_handler(acpi_handle gpe_device,
+                        u32 gpe_number, acpi_event_handler address);
+
 #ifdef ACPI_FUTURE_USAGE
 acpi_status acpi_install_exception_handler(acpi_exception_handler handler);
 #endif
@@ -238,10 +263,6 @@ acpi_status acpi_acquire_global_lock(u16 timeout, u32 * handle);
 
 acpi_status acpi_release_global_lock(u32 handle);
 
-acpi_status
-acpi_remove_gpe_handler(acpi_handle gpe_device,
-                        u32 gpe_number, acpi_event_handler address);
-
 acpi_status acpi_enable_event(u32 event, u32 flags);
 
 acpi_status acpi_disable_event(u32 event, u32 flags);
@@ -250,6 +271,9 @@ acpi_status acpi_clear_event(u32 event);
 
 acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status);
 
+/*
+ * GPE Interfaces
+ */
 acpi_status acpi_set_gpe_type(acpi_handle gpe_device, u32 gpe_number, u8 type);
 
 acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number);
@@ -263,6 +287,12 @@ acpi_get_gpe_status(acpi_handle gpe_device,
                     u32 gpe_number,
                     u32 flags, acpi_event_status * event_status);
 
+acpi_status acpi_disable_all_gpes(void);
+
+acpi_status acpi_enable_all_runtime_gpes(void);
+
+acpi_status acpi_get_gpe_device(u32 gpe_index, acpi_handle *gpe_device);
+
 acpi_status
 acpi_install_gpe_block(acpi_handle gpe_device,
                        struct acpi_generic_address *gpe_block_address,
@@ -313,6 +343,8 @@ acpi_resource_to_address64(struct acpi_resource *resource,
 /*
  * Hardware (ACPI device) interfaces
  */
+acpi_status acpi_reset(void);
+
 acpi_status acpi_get_register(u32 register_id, u32 * return_value);
 
 acpi_status acpi_get_register_unlocked(u32 register_id, u32 *return_value);
@@ -320,12 +352,14 @@ acpi_status acpi_get_register_unlocked(u32 register_id, u32 *return_value);
 acpi_status acpi_set_register(u32 register_id, u32 value);
 
 acpi_status
-acpi_set_firmware_waking_vector(acpi_physical_address physical_address);
+acpi_set_firmware_waking_vector(u32 physical_address);
 
-#ifdef ACPI_FUTURE_USAGE
 acpi_status
-acpi_get_firmware_waking_vector(acpi_physical_address * physical_address);
-#endif
+acpi_set_firmware_waking_vector64(u64 physical_address);
+
+acpi_status acpi_read(u32 *value, struct acpi_generic_address *reg);
+
+acpi_status acpi_write(u32 value, struct acpi_generic_address *reg);
 
 acpi_status
 acpi_get_sleep_type_data(u8 sleep_state, u8 * slp_typ_a, u8 * slp_typ_b);
@@ -340,4 +374,42 @@ acpi_status acpi_leave_sleep_state_prep(u8 sleep_state);
 
 acpi_status acpi_leave_sleep_state(u8 sleep_state);
 
+/*
+ * Debug output
+ */
+void ACPI_INTERNAL_VAR_XFACE
+acpi_error(const char *module_name,
+           u32 line_number, const char *format, ...) ACPI_PRINTF_LIKE(3);
+
+void ACPI_INTERNAL_VAR_XFACE
+acpi_exception(const char *module_name,
+               u32 line_number,
+               acpi_status status, const char *format, ...) ACPI_PRINTF_LIKE(4);
+
+void ACPI_INTERNAL_VAR_XFACE
+acpi_warning(const char *module_name,
+             u32 line_number, const char *format, ...) ACPI_PRINTF_LIKE(3);
+
+void ACPI_INTERNAL_VAR_XFACE
+acpi_info(const char *module_name,
+          u32 line_number, const char *format, ...) ACPI_PRINTF_LIKE(3);
+
+#ifdef ACPI_DEBUG_OUTPUT
+
+void ACPI_INTERNAL_VAR_XFACE
+acpi_debug_print(u32 requested_debug_level,
+                 u32 line_number,
+                 const char *function_name,
+                 const char *module_name,
+                 u32 component_id, const char *format, ...) ACPI_PRINTF_LIKE(6);
+
+void ACPI_INTERNAL_VAR_XFACE
+acpi_debug_print_raw(u32 requested_debug_level,
+                     u32 line_number,
+                     const char *function_name,
+                     const char *module_name,
+                     u32 component_id,
+                     const char *format, ...) ACPI_PRINTF_LIKE(6);
+#endif
+
 #endif                          /* __ACXFACE_H__ */
diff --git a/include/acpi/acrestyp.h b/include/acpi/acrestyp.h
new file mode 100644
index 000000000000..9ffe00feada6
--- /dev/null
+++ b/include/acpi/acrestyp.h
@@ -0,0 +1,405 @@
+/******************************************************************************
+ *
+ * Name: acrestyp.h - Defines, types, and structures for resource descriptors
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2008, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#ifndef __ACRESTYP_H__
+#define __ACRESTYP_H__
+
+/*
+ * Definitions for Resource Attributes
+ */
+typedef u16 acpi_rs_length;     /* Resource Length field is fixed at 16 bits */
+typedef u32 acpi_rsdesc_size;   /* Max Resource Descriptor size is (Length+3) = (64_k-1)+3 */
+
+/*
+ * Memory Attributes
+ */
+#define ACPI_READ_ONLY_MEMORY           (u8) 0x00
+#define ACPI_READ_WRITE_MEMORY          (u8) 0x01
+
+#define ACPI_NON_CACHEABLE_MEMORY       (u8) 0x00
+#define ACPI_CACHABLE_MEMORY            (u8) 0x01
+#define ACPI_WRITE_COMBINING_MEMORY     (u8) 0x02
+#define ACPI_PREFETCHABLE_MEMORY        (u8) 0x03
+
+/*
+ * IO Attributes
+ * The ISA IO ranges are:     n000-n0_fFh, n400-n4_fFh, n800-n8_fFh, n_c00-n_cFFh.
+ * The non-ISA IO ranges are: n100-n3_fFh, n500-n7_fFh, n900-n_bFFh, n_cd0-n_fFFh.
+ */
+#define ACPI_NON_ISA_ONLY_RANGES        (u8) 0x01
+#define ACPI_ISA_ONLY_RANGES            (u8) 0x02
+#define ACPI_ENTIRE_RANGE               (ACPI_NON_ISA_ONLY_RANGES | ACPI_ISA_ONLY_RANGES)
+
+/* Type of translation - 1=Sparse, 0=Dense */
+
+#define ACPI_SPARSE_TRANSLATION         (u8) 0x01
+
+/*
+ * IO Port Descriptor Decode
+ */
+#define ACPI_DECODE_10                  (u8) 0x00       /* 10-bit IO address decode */
+#define ACPI_DECODE_16                  (u8) 0x01       /* 16-bit IO address decode */
+
+/*
+ * IRQ Attributes
+ */
+#define ACPI_LEVEL_SENSITIVE            (u8) 0x00
+#define ACPI_EDGE_SENSITIVE             (u8) 0x01
+
+#define ACPI_ACTIVE_HIGH                (u8) 0x00
+#define ACPI_ACTIVE_LOW                 (u8) 0x01
+
+#define ACPI_EXCLUSIVE                  (u8) 0x00
+#define ACPI_SHARED                     (u8) 0x01
+
+/*
+ * DMA Attributes
+ */
+#define ACPI_COMPATIBILITY              (u8) 0x00
+#define ACPI_TYPE_A                     (u8) 0x01
+#define ACPI_TYPE_B                     (u8) 0x02
+#define ACPI_TYPE_F                     (u8) 0x03
+
+#define ACPI_NOT_BUS_MASTER             (u8) 0x00
+#define ACPI_BUS_MASTER                 (u8) 0x01
+
+#define ACPI_TRANSFER_8                 (u8) 0x00
+#define ACPI_TRANSFER_8_16              (u8) 0x01
+#define ACPI_TRANSFER_16                (u8) 0x02
+
+/*
+ * Start Dependent Functions Priority definitions
+ */
+#define ACPI_GOOD_CONFIGURATION         (u8) 0x00
+#define ACPI_ACCEPTABLE_CONFIGURATION   (u8) 0x01
+#define ACPI_SUB_OPTIMAL_CONFIGURATION  (u8) 0x02
+
+/*
+ * 16, 32 and 64-bit Address Descriptor resource types
+ */
+#define ACPI_MEMORY_RANGE               (u8) 0x00
+#define ACPI_IO_RANGE                   (u8) 0x01
+#define ACPI_BUS_NUMBER_RANGE           (u8) 0x02
+
+#define ACPI_ADDRESS_NOT_FIXED          (u8) 0x00
+#define ACPI_ADDRESS_FIXED              (u8) 0x01
+
+#define ACPI_POS_DECODE                 (u8) 0x00
+#define ACPI_SUB_DECODE                 (u8) 0x01
+
+#define ACPI_PRODUCER                   (u8) 0x00
+#define ACPI_CONSUMER                   (u8) 0x01
+
+/*
+ * If possible, pack the following structures to byte alignment
+ */
+#ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
+#pragma pack(1)
+#endif
+
+/* UUID data structures for use in vendor-defined resource descriptors */
+
+struct acpi_uuid {
+        u8 data[ACPI_UUID_LENGTH];
+};
+
+struct acpi_vendor_uuid {
+        u8 subtype;
+        u8 data[ACPI_UUID_LENGTH];
+};
+
+/*
+ * Structures used to describe device resources
+ */
+struct acpi_resource_irq {
+        u8 descriptor_length;
+        u8 triggering;
+        u8 polarity;
+        u8 sharable;
+        u8 interrupt_count;
+        u8 interrupts[1];
+};
+
+struct acpi_resource_dma {
+        u8 type;
+        u8 bus_master;
+        u8 transfer;
+        u8 channel_count;
+        u8 channels[1];
+};
+
+struct acpi_resource_start_dependent {
+        u8 descriptor_length;
+        u8 compatibility_priority;
+        u8 performance_robustness;
+};
+
+/*
+ * The END_DEPENDENT_FUNCTIONS_RESOURCE struct is not
+ * needed because it has no fields
+ */
+
+struct acpi_resource_io {
+        u8 io_decode;
+        u8 alignment;
+        u8 address_length;
+        u16 minimum;
+        u16 maximum;
+};
+
+struct acpi_resource_fixed_io {
+        u16 address;
+        u8 address_length;
+};
+
+struct acpi_resource_vendor {
+        u16 byte_length;
+        u8 byte_data[1];
+};
+
+/* Vendor resource with UUID info (introduced in ACPI 3.0) */
+
+struct acpi_resource_vendor_typed {
+        u16 byte_length;
+        u8 uuid_subtype;
+        u8 uuid[ACPI_UUID_LENGTH];
+        u8 byte_data[1];
+};
+
+struct acpi_resource_end_tag {
+        u8 checksum;
+};
+
+struct acpi_resource_memory24 {
+        u8 write_protect;
+        u16 minimum;
+        u16 maximum;
+        u16 alignment;
+        u16 address_length;
+};
+
+struct acpi_resource_memory32 {
+        u8 write_protect;
+        u32 minimum;
+        u32 maximum;
+        u32 alignment;
+        u32 address_length;
+};
+
+struct acpi_resource_fixed_memory32 {
+        u8 write_protect;
+        u32 address;
+        u32 address_length;
+};
+
+struct acpi_memory_attribute {
+        u8 write_protect;
+        u8 caching;
+        u8 range_type;
+        u8 translation;
+};
+
+struct acpi_io_attribute {
+        u8 range_type;
+        u8 translation;
+        u8 translation_type;
+        u8 reserved1;
+};
+
+union acpi_resource_attribute {
+        struct acpi_memory_attribute mem;
+        struct acpi_io_attribute io;
+
+        /* Used for the *word_space macros */
+
+        u8 type_specific;
+};
+
+struct acpi_resource_source {
+        u8 index;
+        u16 string_length;
+        char *string_ptr;
+};
+
+/* Fields common to all address descriptors, 16/32/64 bit */
+
+#define ACPI_RESOURCE_ADDRESS_COMMON \
+        u8                                      resource_type; \
+        u8                                      producer_consumer; \
+        u8                                      decode; \
+        u8                                      min_address_fixed; \
+        u8                                      max_address_fixed; \
+        union acpi_resource_attribute           info;
+
+struct acpi_resource_address {
+ACPI_RESOURCE_ADDRESS_COMMON};
+
+struct acpi_resource_address16 {
+        ACPI_RESOURCE_ADDRESS_COMMON u16 granularity;
+        u16 minimum;
+        u16 maximum;
+        u16 translation_offset;
+        u16 address_length;
+        struct acpi_resource_source resource_source;
+};
+
+struct acpi_resource_address32 {
+        ACPI_RESOURCE_ADDRESS_COMMON u32 granularity;
+        u32 minimum;
+        u32 maximum;
+        u32 translation_offset;
+        u32 address_length;
+        struct acpi_resource_source resource_source;
+};
+
+struct acpi_resource_address64 {
+        ACPI_RESOURCE_ADDRESS_COMMON u64 granularity;
+        u64 minimum;
+        u64 maximum;
+        u64 translation_offset;
+        u64 address_length;
+        struct acpi_resource_source resource_source;
+};
+
+struct acpi_resource_extended_address64 {
+        ACPI_RESOURCE_ADDRESS_COMMON u8 revision_iD;
+        u64 granularity;
+        u64 minimum;
+        u64 maximum;
+        u64 translation_offset;
+        u64 address_length;
+        u64 type_specific;
+};
+
+struct acpi_resource_extended_irq {
+        u8 producer_consumer;
+        u8 triggering;
+        u8 polarity;
+        u8 sharable;
+        u8 interrupt_count;
+        struct acpi_resource_source resource_source;
+        u32 interrupts[1];
+};
+
+struct acpi_resource_generic_register {
+        u8 space_id;
+        u8 bit_width;
+        u8 bit_offset;
+        u8 access_size;
+        u64 address;
+};
+
+/* ACPI_RESOURCE_TYPEs */
+
+#define ACPI_RESOURCE_TYPE_IRQ                  0
+#define ACPI_RESOURCE_TYPE_DMA                  1
+#define ACPI_RESOURCE_TYPE_START_DEPENDENT      2
+#define ACPI_RESOURCE_TYPE_END_DEPENDENT        3
+#define ACPI_RESOURCE_TYPE_IO                   4
+#define ACPI_RESOURCE_TYPE_FIXED_IO             5
+#define ACPI_RESOURCE_TYPE_VENDOR               6
+#define ACPI_RESOURCE_TYPE_END_TAG              7
+#define ACPI_RESOURCE_TYPE_MEMORY24             8
+#define ACPI_RESOURCE_TYPE_MEMORY32             9
+#define ACPI_RESOURCE_TYPE_FIXED_MEMORY32       10
+#define ACPI_RESOURCE_TYPE_ADDRESS16            11
+#define ACPI_RESOURCE_TYPE_ADDRESS32            12
+#define ACPI_RESOURCE_TYPE_ADDRESS64            13
+#define ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64   14      /* ACPI 3.0 */
+#define ACPI_RESOURCE_TYPE_EXTENDED_IRQ         15
+#define ACPI_RESOURCE_TYPE_GENERIC_REGISTER     16
+#define ACPI_RESOURCE_TYPE_MAX                  16
+
+/* Master union for resource descriptors */
+
+union acpi_resource_data {
+        struct acpi_resource_irq irq;
+        struct acpi_resource_dma dma;
+        struct acpi_resource_start_dependent start_dpf;
+        struct acpi_resource_io io;
+        struct acpi_resource_fixed_io fixed_io;
+        struct acpi_resource_vendor vendor;
+        struct acpi_resource_vendor_typed vendor_typed;
+        struct acpi_resource_end_tag end_tag;
+        struct acpi_resource_memory24 memory24;
+        struct acpi_resource_memory32 memory32;
+        struct acpi_resource_fixed_memory32 fixed_memory32;
+        struct acpi_resource_address16 address16;
+        struct acpi_resource_address32 address32;
+        struct acpi_resource_address64 address64;
+        struct acpi_resource_extended_address64 ext_address64;
+        struct acpi_resource_extended_irq extended_irq;
+        struct acpi_resource_generic_register generic_reg;
+
+        /* Common fields */
+
+        struct acpi_resource_address address;   /* Common 16/32/64 address fields */
+};
+
+/* Common resource header */
+
+struct acpi_resource {
+        u32 type;
+        u32 length;
+        union acpi_resource_data data;
+};
+
+/* restore default alignment */
+
+#pragma pack()
+
+#define ACPI_RS_SIZE_NO_DATA                8   /* Id + Length fields */
+#define ACPI_RS_SIZE_MIN                    (u32) ACPI_ROUND_UP_TO_NATIVE_WORD (12)
+#define ACPI_RS_SIZE(type)                  (u32) (ACPI_RS_SIZE_NO_DATA + sizeof (type))
+
+#define ACPI_NEXT_RESOURCE(res)             (struct acpi_resource *)((u8 *) res + res->length)
+
+struct acpi_pci_routing_table {
+        u32 length;
+        u32 pin;
+        acpi_integer address;   /* here for 64-bit alignment */
+        u32 source_index;
+        char source[4];         /* pad to 64 bits so sizeof() works in all cases */
+};
+
+#endif                          /* __ACRESTYP_H__ */
diff --git a/include/acpi/actbl.h b/include/acpi/actbl.h
index 13a3d9ad92db..813e4b6c2c0d 100644
--- a/include/acpi/actbl.h
+++ b/include/acpi/actbl.h
@@ -288,6 +288,31 @@ enum acpi_prefered_pm_profiles {
 
 #define ACPI_FADT_OFFSET(f)             (u8) ACPI_OFFSET (struct acpi_table_fadt, f)
 
+union acpi_name_union {
+        u32 integer;
+        char ascii[4];
+};
+
+/*
+ * Internal ACPI Table Descriptor. One per ACPI table
+ */
+struct acpi_table_desc {
+        acpi_physical_address address;
+        struct acpi_table_header *pointer;
+        u32 length;             /* Length fixed at 32 bits */
+        union acpi_name_union signature;
+        acpi_owner_id owner_id;
+        u8 flags;
+};
+
+/* Flags for above */
+
+#define ACPI_TABLE_ORIGIN_UNKNOWN       (0)
+#define ACPI_TABLE_ORIGIN_MAPPED        (1)
+#define ACPI_TABLE_ORIGIN_ALLOCATED     (2)
+#define ACPI_TABLE_ORIGIN_MASK          (3)
+#define ACPI_TABLE_IS_LOADED            (4)
+
 /*
  * Get the remaining ACPI tables
  */
diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 63f5b4cf4de1..18963b968114 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -627,7 +627,7 @@ struct acpi_hest_aer_common {
         u32 uncorrectable_error_mask;
         u32 uncorrectable_error_severity;
         u32 correctable_error_mask;
-        u32 advanced_error_cababilities;
+        u32 advanced_error_capabilities;
 };
 
 /* Hardware Error Notification */
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index 8222e8de0d1c..a20aab510173 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -204,11 +204,10 @@ typedef u32 acpi_physical_address;
 
 /*******************************************************************************
  *
- * OS-dependent and compiler-dependent types
+ * OS-dependent types
  *
  * If the defaults below are not appropriate for the host system, they can
- * be defined in the compiler-specific or OS-specific header, and this will
- * take precedence.
+ * be defined in the OS-specific header, and this will take precedence.
  *
  ******************************************************************************/
 
@@ -218,12 +217,6 @@ typedef u32 acpi_physical_address;
 #define acpi_thread_id                  acpi_size
 #endif
 
-/* Object returned from acpi_os_create_lock */
-
-#ifndef acpi_spinlock
-#define acpi_spinlock                   void *
-#endif
-
 /* Flags for acpi_os_acquire_lock/acpi_os_release_lock */
 
 #ifndef acpi_cpu_flags
@@ -233,9 +226,51 @@ typedef u32 acpi_physical_address;
 /* Object returned from acpi_os_create_cache */
 
 #ifndef acpi_cache_t
+#ifdef ACPI_USE_LOCAL_CACHE
 #define acpi_cache_t                    struct acpi_memory_list
+#else
+#define acpi_cache_t                    void *
+#endif
+#endif
+
+/*
+ * Synchronization objects - Mutexes, Semaphores, and spin_locks
+ */
+#if (ACPI_MUTEX_TYPE == ACPI_BINARY_SEMAPHORE)
+/*
+ * These macros are used if the host OS does not support a mutex object.
+ * Map the OSL Mutex interfaces to binary semaphores.
+ */
+#define acpi_mutex                      acpi_semaphore
+#define acpi_os_create_mutex(out_handle) acpi_os_create_semaphore (1, 1, out_handle)
+#define acpi_os_delete_mutex(handle)    (void) acpi_os_delete_semaphore (handle)
+#define acpi_os_acquire_mutex(handle,time) acpi_os_wait_semaphore (handle, 1, time)
+#define acpi_os_release_mutex(handle)   (void) acpi_os_signal_semaphore (handle, 1)
+#endif
+
+/* Configurable types for synchronization objects */
+
+#ifndef acpi_spinlock
+#define acpi_spinlock                   void *
+#endif
+
+#ifndef acpi_semaphore
+#define acpi_semaphore                  void *
+#endif
+
+#ifndef acpi_mutex
+#define acpi_mutex                      void *
 #endif
 
+/*******************************************************************************
+ *
+ * Compiler-dependent types
+ *
+ * If the defaults below are not appropriate for the host compiler, they can
+ * be defined in the compiler-specific header, and this will take precedence.
+ *
+ ******************************************************************************/
+
 /* Use C99 uintptr_t for pointer casting if available, "void *" otherwise */
 
 #ifndef acpi_uintptr_t
@@ -268,6 +303,43 @@ typedef u32 acpi_physical_address;
 #define ACPI_EXPORT_SYMBOL(symbol)
 #endif
 
+/******************************************************************************
+ *
+ * ACPI Specification constants (Do not change unless the specification changes)
+ *
+ *****************************************************************************/
+
+/* Number of distinct FADT-based GPE register blocks (GPE0 and GPE1) */
+
+#define ACPI_MAX_GPE_BLOCKS             2
+
+/* Default ACPI register widths */
+
+#define ACPI_GPE_REGISTER_WIDTH         8
+#define ACPI_PM1_REGISTER_WIDTH         16
+#define ACPI_PM2_REGISTER_WIDTH         8
+#define ACPI_PM_TIMER_WIDTH             32
+
+/* Names within the namespace are 4 bytes long */
+
+#define ACPI_NAME_SIZE                  4
+#define ACPI_PATH_SEGMENT_LENGTH        5       /* 4 chars for name + 1 char for separator */
+#define ACPI_PATH_SEPARATOR             '.'
+
+/* Sizes for ACPI table headers */
+
+#define ACPI_OEM_ID_SIZE                6
+#define ACPI_OEM_TABLE_ID_SIZE          8
+
+/* ACPI/PNP hardware IDs */
+
+#define PCI_ROOT_HID_STRING             "PNP0A03"
+#define PCI_EXPRESS_ROOT_HID_STRING     "PNP0A08"
+
+/* PM Timer ticks per second (HZ) */
+
+#define PM_TIMER_FREQUENCY  3579545
+
 /*******************************************************************************
  *
  * Independent types
@@ -291,13 +363,18 @@ typedef u32 acpi_physical_address;
 #endif
 
 /*
- * Mescellaneous types
+ * Miscellaneous types
  */
 typedef u32 acpi_status;        /* All ACPI Exceptions */
 typedef u32 acpi_name;          /* 4-byte ACPI name */
 typedef char *acpi_string;      /* Null terminated ASCII string */
 typedef void *acpi_handle;      /* Actually a ptr to a NS Node */
 
+/* Owner IDs are used to track namespace nodes for selective deletion */
+
+typedef u8 acpi_owner_id;
+#define ACPI_OWNER_ID_MAX               0xFF
+
 struct uint64_struct {
         u32 lo;
         u32 hi;
@@ -313,13 +390,8 @@ struct uint32_struct {
         u32 hi;
 };
 
-/* Synchronization objects */
-
-#define acpi_mutex                      void *
-#define acpi_semaphore                  void *
-
 /*
- * Acpi integer width. In ACPI version 1, integers are 32 bits.  In ACPI
+ * Acpi integer width. In ACPI version 1, integers are 32 bits. In ACPI
  * version 2, integers are 64 bits. Note that this pertains to the ACPI integer
  * type only, not other integers used in the implementation of the ACPI CA
  * subsystem.
@@ -338,10 +410,75 @@ typedef unsigned long long acpi_integer;
 #define ACPI_MAX16_DECIMAL_DIGITS        5
 #define ACPI_MAX8_DECIMAL_DIGITS         3
 
+/* PM Timer ticks per second (HZ) */
+
+#define PM_TIMER_FREQUENCY  3579545
+
 /*
  * Constants with special meanings
  */
 #define ACPI_ROOT_OBJECT                ACPI_ADD_PTR (acpi_handle, NULL, ACPI_MAX_PTR)
+#define ACPI_WAIT_FOREVER               0xFFFF  /* u16, as per ACPI spec */
+#define ACPI_DO_NOT_WAIT                0
+
+/*******************************************************************************
+ *
+ * Commonly used macros
+ *
+ ******************************************************************************/
+
+/* Data manipulation */
+
+#define ACPI_LOWORD(l)                  ((u16)(u32)(l))
+#define ACPI_HIWORD(l)                  ((u16)((((u32)(l)) >> 16) & 0xFFFF))
+#define ACPI_LOBYTE(l)                  ((u8)(u16)(l))
+#define ACPI_HIBYTE(l)                  ((u8)((((u16)(l)) >> 8) & 0xFF))
+
+/* Full 64-bit integer must be available on both 32-bit and 64-bit platforms */
+
+struct acpi_integer_overlay {
+        u32 lo_dword;
+        u32 hi_dword;
+};
+
+#define ACPI_LODWORD(integer)           (ACPI_CAST_PTR (struct acpi_integer_overlay, &integer)->lo_dword)
+#define ACPI_HIDWORD(integer)           (ACPI_CAST_PTR (struct acpi_integer_overlay, &integer)->hi_dword)
+
+#define ACPI_SET_BIT(target,bit)        ((target) |= (bit))
+#define ACPI_CLEAR_BIT(target,bit)      ((target) &= ~(bit))
+#define ACPI_MIN(a,b)                   (((a)<(b))?(a):(b))
+#define ACPI_MAX(a,b)                   (((a)>(b))?(a):(b))
+
+/* Size calculation */
+
+#define ACPI_ARRAY_LENGTH(x)            (sizeof(x) / sizeof((x)[0]))
+
+/* Pointer manipulation */
+
+#define ACPI_CAST_PTR(t, p)             ((t *) (acpi_uintptr_t) (p))
+#define ACPI_CAST_INDIRECT_PTR(t, p)    ((t **) (acpi_uintptr_t) (p))
+#define ACPI_ADD_PTR(t, a, b)           ACPI_CAST_PTR (t, (ACPI_CAST_PTR (u8, (a)) + (acpi_size)(b)))
+#define ACPI_PTR_DIFF(a, b)             (acpi_size) (ACPI_CAST_PTR (u8, (a)) - ACPI_CAST_PTR (u8, (b)))
+
+/* Pointer/Integer type conversions */
+
+#define ACPI_TO_POINTER(i)              ACPI_ADD_PTR (void, (void *) NULL,(acpi_size) i)
+#define ACPI_TO_INTEGER(p)              ACPI_PTR_DIFF (p, (void *) NULL)
+#define ACPI_OFFSET(d, f)               (acpi_size) ACPI_PTR_DIFF (&(((d *)0)->f), (void *) NULL)
+#define ACPI_PHYSADDR_TO_PTR(i)         ACPI_TO_POINTER(i)
+#define ACPI_PTR_TO_PHYSADDR(i)         ACPI_TO_INTEGER(i)
+
+#ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
+#define ACPI_COMPARE_NAME(a,b)          (*ACPI_CAST_PTR (u32, (a)) == *ACPI_CAST_PTR (u32, (b)))
+#else
+#define ACPI_COMPARE_NAME(a,b)          (!ACPI_STRNCMP (ACPI_CAST_PTR (char, (a)), ACPI_CAST_PTR (char, (b)), ACPI_NAME_SIZE))
+#endif
+
+/*******************************************************************************
+ *
+ * Miscellaneous constants
+ *
+ ******************************************************************************/
 
 /*
  * Initialization sequence
@@ -414,7 +551,7 @@ typedef unsigned long long acpi_integer;
 #define ACPI_NOTIFY_MAX                 0x0B
 
 /*
- * Types associated with ACPI names and objects.  The first group of
+ * Types associated with ACPI names and objects. The first group of
  * values (up to ACPI_TYPE_EXTERNAL_MAX) correspond to the definition
  * of the ACPI object_type() operator (See the ACPI Spec). Therefore,
  * only add to the first group if the spec changes.
@@ -732,6 +869,15 @@ struct acpi_buffer {
 #define ACPI_NAME_TYPE_MAX              1
 
 /*
+ * Predefined Namespace items
+ */
+struct acpi_predefined_names {
+        char *name;
+        u8 type;
+        char *val;
+};
+
+/*
  * Structure and flags for acpi_get_system_info
  */
 #define ACPI_SYS_MODE_UNKNOWN           0x0000
@@ -787,7 +933,7 @@ acpi_status(*acpi_exception_handler) (acpi_status aml_status,
                                       u16 opcode,
                                       u32 aml_offset, void *context);
 
-/* Table Event handler (Load, load_table etc) and types */
+/* Table Event handler (Load, load_table, etc.) and types */
 
 typedef
 acpi_status(*acpi_tbl_handler) (u32 event, void *table, void *context);
@@ -823,6 +969,12 @@ acpi_status(*acpi_walk_callback) (acpi_handle obj_handle,
 #define ACPI_INTERRUPT_NOT_HANDLED      0x00
 #define ACPI_INTERRUPT_HANDLED          0x01
 
+/* Length of _HID, _UID, _CID, and UUID values */
+
+#define ACPI_DEVICE_ID_LENGTH           0x09
+#define ACPI_MAX_CID_LENGTH             48
+#define ACPI_UUID_LENGTH                16
+
 /* Common string version of device HIDs and UIDs */
 
 struct acpica_device_id {
@@ -900,357 +1052,28 @@ struct acpi_mem_space_context {
 };
 
 /*
- * Definitions for Resource Attributes
- */
-typedef u16 acpi_rs_length;     /* Resource Length field is fixed at 16 bits */
-typedef u32 acpi_rsdesc_size;   /* Max Resource Descriptor size is (Length+3) = (64_k-1)+3 */
-
-/*
- *  Memory Attributes
- */
-#define ACPI_READ_ONLY_MEMORY           (u8) 0x00
-#define ACPI_READ_WRITE_MEMORY          (u8) 0x01
-
-#define ACPI_NON_CACHEABLE_MEMORY       (u8) 0x00
-#define ACPI_CACHABLE_MEMORY            (u8) 0x01
-#define ACPI_WRITE_COMBINING_MEMORY     (u8) 0x02
-#define ACPI_PREFETCHABLE_MEMORY        (u8) 0x03
-
-/*
- *  IO Attributes
- *  The ISA IO ranges are:     n000-n0_fFh, n400-n4_fFh, n800-n8_fFh, n_c00-n_cFFh.
- *  The non-ISA IO ranges are: n100-n3_fFh, n500-n7_fFh, n900-n_bFFh, n_cd0-n_fFFh.
+ * struct acpi_memory_list is used only if the ACPICA local cache is enabled
  */
-#define ACPI_NON_ISA_ONLY_RANGES        (u8) 0x01
-#define ACPI_ISA_ONLY_RANGES            (u8) 0x02
-#define ACPI_ENTIRE_RANGE               (ACPI_NON_ISA_ONLY_RANGES | ACPI_ISA_ONLY_RANGES)
-
-/* Type of translation - 1=Sparse, 0=Dense */
-
-#define ACPI_SPARSE_TRANSLATION         (u8) 0x01
-
-/*
- *  IO Port Descriptor Decode
- */
-#define ACPI_DECODE_10                  (u8) 0x00       /* 10-bit IO address decode */
-#define ACPI_DECODE_16                  (u8) 0x01       /* 16-bit IO address decode */
-
-/*
- *  IRQ Attributes
- */
-#define ACPI_LEVEL_SENSITIVE            (u8) 0x00
-#define ACPI_EDGE_SENSITIVE             (u8) 0x01
-
-#define ACPI_ACTIVE_HIGH                (u8) 0x00
-#define ACPI_ACTIVE_LOW                 (u8) 0x01
-
-#define ACPI_EXCLUSIVE                  (u8) 0x00
-#define ACPI_SHARED                     (u8) 0x01
-
-/*
- *  DMA Attributes
- */
-#define ACPI_COMPATIBILITY              (u8) 0x00
-#define ACPI_TYPE_A                     (u8) 0x01
-#define ACPI_TYPE_B                     (u8) 0x02
-#define ACPI_TYPE_F                     (u8) 0x03
-
-#define ACPI_NOT_BUS_MASTER             (u8) 0x00
-#define ACPI_BUS_MASTER                 (u8) 0x01
-
-#define ACPI_TRANSFER_8                 (u8) 0x00
-#define ACPI_TRANSFER_8_16              (u8) 0x01
-#define ACPI_TRANSFER_16                (u8) 0x02
-
-/*
- * Start Dependent Functions Priority definitions
- */
-#define ACPI_GOOD_CONFIGURATION         (u8) 0x00
-#define ACPI_ACCEPTABLE_CONFIGURATION   (u8) 0x01
-#define ACPI_SUB_OPTIMAL_CONFIGURATION  (u8) 0x02
-
-/*
- *  16, 32 and 64-bit Address Descriptor resource types
- */
-#define ACPI_MEMORY_RANGE               (u8) 0x00
-#define ACPI_IO_RANGE                   (u8) 0x01
-#define ACPI_BUS_NUMBER_RANGE           (u8) 0x02
-
-#define ACPI_ADDRESS_NOT_FIXED          (u8) 0x00
-#define ACPI_ADDRESS_FIXED              (u8) 0x01
-
-#define ACPI_POS_DECODE                 (u8) 0x00
-#define ACPI_SUB_DECODE                 (u8) 0x01
-
-#define ACPI_PRODUCER                   (u8) 0x00
-#define ACPI_CONSUMER                   (u8) 0x01
-
-/*
- * If possible, pack the following structures to byte alignment
- */
-#ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
-#pragma pack(1)
+struct acpi_memory_list {
+        char *list_name;
+        void *list_head;
+        u16 object_size;
+        u16 max_depth;
+        u16 current_depth;
+        u16 link_offset;
+
+#ifdef ACPI_DBG_TRACK_ALLOCATIONS
+
+        /* Statistics for debug memory tracking only */
+
+        u32 total_allocated;
+        u32 total_freed;
+        u32 max_occupied;
+        u32 total_size;
+        u32 current_total_size;
+        u32 requests;
+        u32 hits;
 #endif
-
-/* UUID data structures for use in vendor-defined resource descriptors */
-
-struct acpi_uuid {
-        u8 data[ACPI_UUID_LENGTH];
-};
-
-struct acpi_vendor_uuid {
-        u8 subtype;
-        u8 data[ACPI_UUID_LENGTH];
-};
-
-/*
- *  Structures used to describe device resources
- */
-struct acpi_resource_irq {
-        u8 descriptor_length;
-        u8 triggering;
-        u8 polarity;
-        u8 sharable;
-        u8 interrupt_count;
-        u8 interrupts[1];
-};
-
-struct acpi_resource_dma {
-        u8 type;
-        u8 bus_master;
-        u8 transfer;
-        u8 channel_count;
-        u8 channels[1];
-};
-
-struct acpi_resource_start_dependent {
-        u8 descriptor_length;
-        u8 compatibility_priority;
-        u8 performance_robustness;
-};
-
-/*
- * END_DEPENDENT_FUNCTIONS_RESOURCE struct is not
- * needed because it has no fields
- */
-
-struct acpi_resource_io {
-        u8 io_decode;
-        u8 alignment;
-        u8 address_length;
-        u16 minimum;
-        u16 maximum;
-};
-
-struct acpi_resource_fixed_io {
-        u16 address;
-        u8 address_length;
-};
-
-struct acpi_resource_vendor {
-        u16 byte_length;
-        u8 byte_data[1];
-};
-
-/* Vendor resource with UUID info (introduced in ACPI 3.0) */
-
-struct acpi_resource_vendor_typed {
-        u16 byte_length;
-        u8 uuid_subtype;
-        u8 uuid[ACPI_UUID_LENGTH];
-        u8 byte_data[1];
-};
-
-struct acpi_resource_end_tag {
-        u8 checksum;
-};
-
-struct acpi_resource_memory24 {
-        u8 write_protect;
-        u16 minimum;
-        u16 maximum;
-        u16 alignment;
-        u16 address_length;
-};
-
-struct acpi_resource_memory32 {
-        u8 write_protect;
-        u32 minimum;
-        u32 maximum;
-        u32 alignment;
-        u32 address_length;
-};
-
-struct acpi_resource_fixed_memory32 {
-        u8 write_protect;
-        u32 address;
-        u32 address_length;
-};
-
-struct acpi_memory_attribute {
-        u8 write_protect;
-        u8 caching;
-        u8 range_type;
-        u8 translation;
-};
-
-struct acpi_io_attribute {
-        u8 range_type;
-        u8 translation;
-        u8 translation_type;
-        u8 reserved1;
-};
-
-union acpi_resource_attribute {
-        struct acpi_memory_attribute mem;
-        struct acpi_io_attribute io;
-
-        /* Used for the *word_space macros */
-
-        u8 type_specific;
-};
-
-struct acpi_resource_source {
-        u8 index;
-        u16 string_length;
-        char *string_ptr;
-};
-
-/* Fields common to all address descriptors, 16/32/64 bit */
-
-#define ACPI_RESOURCE_ADDRESS_COMMON \
-        u8                              resource_type; \
-        u8                              producer_consumer; \
-        u8                              decode; \
-        u8                              min_address_fixed; \
-        u8                              max_address_fixed; \
-        union acpi_resource_attribute   info;
-
-struct acpi_resource_address {
-ACPI_RESOURCE_ADDRESS_COMMON};
-
-struct acpi_resource_address16 {
-        ACPI_RESOURCE_ADDRESS_COMMON u16 granularity;
-        u16 minimum;
-        u16 maximum;
-        u16 translation_offset;
-        u16 address_length;
-        struct acpi_resource_source resource_source;
-};
-
-struct acpi_resource_address32 {
-        ACPI_RESOURCE_ADDRESS_COMMON u32 granularity;
-        u32 minimum;
-        u32 maximum;
-        u32 translation_offset;
-        u32 address_length;
-        struct acpi_resource_source resource_source;
-};
-
-struct acpi_resource_address64 {
-        ACPI_RESOURCE_ADDRESS_COMMON u64 granularity;
-        u64 minimum;
-        u64 maximum;
-        u64 translation_offset;
-        u64 address_length;
-        struct acpi_resource_source resource_source;
-};
-
-struct acpi_resource_extended_address64 {
-        ACPI_RESOURCE_ADDRESS_COMMON u8 revision_iD;
-        u64 granularity;
-        u64 minimum;
-        u64 maximum;
-        u64 translation_offset;
-        u64 address_length;
-        u64 type_specific;
-};
-
-struct acpi_resource_extended_irq {
-        u8 producer_consumer;
-        u8 triggering;
-        u8 polarity;
-        u8 sharable;
-        u8 interrupt_count;
-        struct acpi_resource_source resource_source;
-        u32 interrupts[1];
-};
-
-struct acpi_resource_generic_register {
-        u8 space_id;
-        u8 bit_width;
-        u8 bit_offset;
-        u8 access_size;
-        u64 address;
-};
-
-/* ACPI_RESOURCE_TYPEs */
-
-#define ACPI_RESOURCE_TYPE_IRQ                  0
-#define ACPI_RESOURCE_TYPE_DMA                  1
-#define ACPI_RESOURCE_TYPE_START_DEPENDENT      2
-#define ACPI_RESOURCE_TYPE_END_DEPENDENT        3
-#define ACPI_RESOURCE_TYPE_IO                   4
-#define ACPI_RESOURCE_TYPE_FIXED_IO             5
-#define ACPI_RESOURCE_TYPE_VENDOR               6
-#define ACPI_RESOURCE_TYPE_END_TAG              7
-#define ACPI_RESOURCE_TYPE_MEMORY24             8
-#define ACPI_RESOURCE_TYPE_MEMORY32             9
-#define ACPI_RESOURCE_TYPE_FIXED_MEMORY32       10
-#define ACPI_RESOURCE_TYPE_ADDRESS16            11
-#define ACPI_RESOURCE_TYPE_ADDRESS32            12
-#define ACPI_RESOURCE_TYPE_ADDRESS64            13
-#define ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64   14      /* ACPI 3.0 */
-#define ACPI_RESOURCE_TYPE_EXTENDED_IRQ         15
-#define ACPI_RESOURCE_TYPE_GENERIC_REGISTER     16
-#define ACPI_RESOURCE_TYPE_MAX                  16
-
-union acpi_resource_data {
-        struct acpi_resource_irq irq;
-        struct acpi_resource_dma dma;
-        struct acpi_resource_start_dependent start_dpf;
-        struct acpi_resource_io io;
-        struct acpi_resource_fixed_io fixed_io;
-        struct acpi_resource_vendor vendor;
-        struct acpi_resource_vendor_typed vendor_typed;
-        struct acpi_resource_end_tag end_tag;
-        struct acpi_resource_memory24 memory24;
-        struct acpi_resource_memory32 memory32;
-        struct acpi_resource_fixed_memory32 fixed_memory32;
-        struct acpi_resource_address16 address16;
-        struct acpi_resource_address32 address32;
-        struct acpi_resource_address64 address64;
-        struct acpi_resource_extended_address64 ext_address64;
-        struct acpi_resource_extended_irq extended_irq;
-        struct acpi_resource_generic_register generic_reg;
-
-        /* Common fields */
-
-        struct acpi_resource_address address;   /* Common 16/32/64 address fields */
-};
-
-struct acpi_resource {
-        u32 type;
-        u32 length;
-        union acpi_resource_data data;
-};
-
-/* restore default alignment */
-
-#pragma pack()
-
-#define ACPI_RS_SIZE_NO_DATA                8   /* Id + Length fields */
-#define ACPI_RS_SIZE_MIN                    (u32) ACPI_ROUND_UP_TO_NATIVE_WORD (12)
-#define ACPI_RS_SIZE(type)                  (u32) (ACPI_RS_SIZE_NO_DATA + sizeof (type))
-
-#define ACPI_NEXT_RESOURCE(res)             (struct acpi_resource *)((u8 *) res + res->length)
-
-struct acpi_pci_routing_table {
-        u32 length;
-        u32 pin;
-        acpi_integer address;   /* here for 64-bit alignment */
-        u32 source_index;
-        char source[4];         /* pad to 64 bits so sizeof() works in all cases */
 };
 
 #endif                          /* __ACTYPES_H__ */
diff --git a/include/acpi/platform/acenv.h b/include/acpi/platform/acenv.h
index fcd2572e428c..e62f10d9a7d8 100644
--- a/include/acpi/platform/acenv.h
+++ b/include/acpi/platform/acenv.h
@@ -44,14 +44,26 @@
 #ifndef __ACENV_H__
 #define __ACENV_H__
 
-/*
+/* Types for ACPI_MUTEX_TYPE */
+
+#define ACPI_BINARY_SEMAPHORE       0
+#define ACPI_OSL_MUTEX              1
+
+/* Types for DEBUGGER_THREADING */
+
+#define DEBUGGER_SINGLE_THREADED    0
+#define DEBUGGER_MULTI_THREADED     1
+
+/******************************************************************************
+ *
  * Configuration for ACPI tools and utilities
- */
+ *
+ *****************************************************************************/
 
 #ifdef ACPI_LIBRARY
 /*
  * Note: The non-debug version of the acpi_library does not contain any
- * debug support, for minimimal size. The debug version uses ACPI_FULL_DEBUG
+ * debug support, for minimal size. The debug version uses ACPI_FULL_DEBUG
  */
 #define ACPI_USE_LOCAL_CACHE
 #endif
@@ -75,17 +87,6 @@
 #define ACPI_DBG_TRACK_ALLOCATIONS
 #endif
 
-#ifdef ACPI_DASM_APP
-#ifndef MSDOS
-#define ACPI_DEBUG_OUTPUT
-#endif
-#define ACPI_APPLICATION
-#define ACPI_DISASSEMBLER
-#define ACPI_NO_METHOD_EXECUTION
-#define ACPI_LARGE_NAMESPACE_NODE
-#define ACPI_DATA_TABLE_DISASSEMBLY
-#endif
-
 #ifdef ACPI_APPLICATION
 #define ACPI_USE_SYSTEM_CLIBRARY
 #define ACPI_USE_LOCAL_CACHE
@@ -179,6 +180,19 @@
 
 /*! [End] no source code translation !*/
 
+/******************************************************************************
+ *
+ * Miscellaneous configuration
+ *
+ *****************************************************************************/
+
+/*
+ * Are mutexes supported by the host? default is no, use binary semaphores.
+ */
+#ifndef ACPI_MUTEX_TYPE
+#define ACPI_MUTEX_TYPE             ACPI_BINARY_SEMAPHORE
+#endif
+
 /*
  * Debugger threading model
  * Use single threaded if the entire subsystem is contained in an application
@@ -187,9 +201,6 @@
  * By default the model is single threaded if ACPI_APPLICATION is set,
  * multi-threaded if ACPI_APPLICATION is not set.
  */
-#define DEBUGGER_SINGLE_THREADED    0
-#define DEBUGGER_MULTI_THREADED     1
-
 #ifndef DEBUGGER_THREADING
 #ifdef ACPI_APPLICATION
 #define DEBUGGER_THREADING          DEBUGGER_SINGLE_THREADED
diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
index 0515e754449d..6d49b2a498c4 100644
--- a/include/acpi/platform/aclinux.h
+++ b/include/acpi/platform/aclinux.h
@@ -46,6 +46,7 @@
 
 #define ACPI_USE_SYSTEM_CLIBRARY
 #define ACPI_USE_DO_WHILE_0
+#define ACPI_MUTEX_TYPE             ACPI_BINARY_SEMAPHORE
 
 #ifdef __KERNEL__
 
@@ -70,9 +71,6 @@
 #define ACPI_EXPORT_SYMBOL(symbol)  EXPORT_SYMBOL(symbol);
 #define strtoul                     simple_strtoul
 
-/* Full namespace pathname length limit - arbitrary */
-#define ACPI_PATHNAME_MAX              256
-
 #else                           /* !__KERNEL__ */
 
 #include <stdarg.h>
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index fba8051fb297..6fce2fc2d124 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -131,22 +131,6 @@ extern int acpi_get_override_irq(int bus_irq, int *trigger, int *polarity);
  */
 void acpi_unregister_gsi (u32 gsi);
 
-struct acpi_prt_entry {
-        struct list_head        node;
-        struct acpi_pci_id      id;
-        u8                      pin;
-        struct {
-                acpi_handle             handle;
-                u32                     index;
-        }                       link;
-        u32                     irq;
-};
-
-struct acpi_prt_list {
-        int                     count;
-        struct list_head        entries;
-};
-
 struct pci_dev;
 
 int acpi_pci_irq_enable (struct pci_dev *dev);
@@ -270,6 +254,7 @@ int acpi_check_mem_region(resource_size_t start, resource_size_t n,
 #ifdef CONFIG_PM_SLEEP
 void __init acpi_no_s4_hw_signature(void);
 void __init acpi_old_suspend_ordering(void);
+void __init acpi_s4_no_nvs(void);
 #endif /* CONFIG_PM_SLEEP */
 #else   /* CONFIG_ACPI */
 
diff --git a/include/linux/async_tx.h b/include/linux/async_tx.h
index 0f50d4cc4360..45f6297821bd 100644
--- a/include/linux/async_tx.h
+++ b/include/linux/async_tx.h
@@ -59,9 +59,7 @@ enum async_tx_flags {
 };
 
 #ifdef CONFIG_DMA_ENGINE
-void async_tx_issue_pending_all(void);
-enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx);
-void async_tx_run_dependencies(struct dma_async_tx_descriptor *tx);
+#define async_tx_issue_pending_all dma_issue_pending_all
 #ifdef CONFIG_ARCH_HAS_ASYNC_TX_FIND_CHANNEL
 #include <asm/async_tx.h>
 #else
@@ -77,19 +75,6 @@ static inline void async_tx_issue_pending_all(void)
         do { } while (0);
 }
 
-static inline enum dma_status
-dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx)
-{
-        return DMA_SUCCESS;
-}
-
-static inline void
-async_tx_run_dependencies(struct dma_async_tx_descriptor *tx,
-        struct dma_chan *host_chan)
-{
-        do { } while (0);
-}
-
 static inline struct dma_chan *
 async_tx_find_channel(struct dma_async_tx_descriptor *depend_tx,
         enum dma_transaction_type tx_type, struct page **dst, int dst_count,
diff --git a/include/linux/atmel-mci.h b/include/linux/atmel-mci.h
index 2a2213eefd85..2f1f95737acb 100644
--- a/include/linux/atmel-mci.h
+++ b/include/linux/atmel-mci.h
@@ -3,7 +3,7 @@
 
 #define ATMEL_MCI_MAX_NR_SLOTS  2
 
-struct dma_slave;
+#include <linux/dw_dmac.h>
 
 /**
  * struct mci_slot_pdata - board-specific per-slot configuration
@@ -28,11 +28,11 @@ struct mci_slot_pdata {
 
 /**
  * struct mci_platform_data - board-specific MMC/SDcard configuration
- * @dma_slave: DMA slave interface to use in data transfers, or NULL.
+ * @dma_slave: DMA slave interface to use in data transfers.
  * @slot: Per-slot configuration data.
  */
 struct mci_platform_data {
-        struct dma_slave        *dma_slave;
+        struct dw_dma_slave     dma_slave;
         struct mci_slot_pdata   slot[ATMEL_MCI_MAX_NR_SLOTS];
 };
 
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index adb0b084eb5a..64dea2ab326c 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -29,32 +29,6 @@
 #include <linux/dma-mapping.h>
 
 /**
- * enum dma_state - resource PNP/power management state
- * @DMA_RESOURCE_SUSPEND: DMA device going into low power state
- * @DMA_RESOURCE_RESUME: DMA device returning to full power
- * @DMA_RESOURCE_AVAILABLE: DMA device available to the system
- * @DMA_RESOURCE_REMOVED: DMA device removed from the system
- */
-enum dma_state {
-        DMA_RESOURCE_SUSPEND,
-        DMA_RESOURCE_RESUME,
-        DMA_RESOURCE_AVAILABLE,
-        DMA_RESOURCE_REMOVED,
-};
-
-/**
- * enum dma_state_client - state of the channel in the client
- * @DMA_ACK: client would like to use, or was using this channel
- * @DMA_DUP: client has already seen this channel, or is not using this channel
- * @DMA_NAK: client does not want to see any more channels
- */
-enum dma_state_client {
-        DMA_ACK,
-        DMA_DUP,
-        DMA_NAK,
-};
-
-/**
  * typedef dma_cookie_t - an opaque DMA cookie
  *
  * if dma_cookie_t is >0 it's a DMA request cookie, <0 it's an error code
@@ -89,23 +63,13 @@ enum dma_transaction_type {
         DMA_MEMSET,
         DMA_MEMCPY_CRC32C,
         DMA_INTERRUPT,
+        DMA_PRIVATE,
         DMA_SLAVE,
 };
 
 /* last transaction type for creation of the capabilities mask */
 #define DMA_TX_TYPE_END (DMA_SLAVE + 1)
 
-/**
- * enum dma_slave_width - DMA slave register access width.
- * @DMA_SLAVE_WIDTH_8BIT: Do 8-bit slave register accesses
- * @DMA_SLAVE_WIDTH_16BIT: Do 16-bit slave register accesses
- * @DMA_SLAVE_WIDTH_32BIT: Do 32-bit slave register accesses
- */
-enum dma_slave_width {
-        DMA_SLAVE_WIDTH_8BIT,
-        DMA_SLAVE_WIDTH_16BIT,
-        DMA_SLAVE_WIDTH_32BIT,
-};
 
 /**
  * enum dma_ctrl_flags - DMA flags to augment operation preparation,
@@ -132,32 +96,6 @@ enum dma_ctrl_flags {
 typedef struct { DECLARE_BITMAP(bits, DMA_TX_TYPE_END); } dma_cap_mask_t;
 
 /**
- * struct dma_slave - Information about a DMA slave
- * @dev: device acting as DMA slave
- * @dma_dev: required DMA master device. If non-NULL, the client can not be
- *      bound to other masters than this.
- * @tx_reg: physical address of data register used for
- *      memory-to-peripheral transfers
- * @rx_reg: physical address of data register used for
- *      peripheral-to-memory transfers
- * @reg_width: peripheral register width
- *
- * If dma_dev is non-NULL, the client can not be bound to other DMA
- * masters than the one corresponding to this device. The DMA master
- * driver may use this to determine if there is controller-specific
- * data wrapped around this struct. Drivers of platform code that sets
- * the dma_dev field must therefore make sure to use an appropriate
- * controller-specific dma slave structure wrapping this struct.
- */
-struct dma_slave {
-        struct device           *dev;
-        struct device           *dma_dev;
-        dma_addr_t              tx_reg;
-        dma_addr_t              rx_reg;
-        enum dma_slave_width    reg_width;
-};
-
-/**
  * struct dma_chan_percpu - the per-CPU part of struct dma_chan
  * @refcount: local_t used for open-coded "bigref" counting
  * @memcpy_count: transaction counter
@@ -165,7 +103,6 @@ struct dma_slave {
  */
 
 struct dma_chan_percpu {
-        local_t refcount;
         /* stats */
         unsigned long memcpy_count;
         unsigned long bytes_transferred;
@@ -176,13 +113,14 @@ struct dma_chan_percpu {
  * @device: ptr to the dma device who supplies this channel, always !%NULL
  * @cookie: last cookie value returned to client
  * @chan_id: channel ID for sysfs
- * @class_dev: class device for sysfs
+ * @dev: class device for sysfs
  * @refcount: kref, used in "bigref" slow-mode
  * @slow_ref: indicates that the DMA channel is free
  * @rcu: the DMA channel's RCU head
  * @device_node: used to add this to the device chan list
  * @local: per-cpu pointer to a struct dma_chan_percpu
  * @client-count: how many clients are using this channel
+ * @table_count: number of appearances in the mem-to-mem allocation table
  */
 struct dma_chan {
         struct dma_device *device;
@@ -190,73 +128,47 @@ struct dma_chan {
 
         /* sysfs */
         int chan_id;
-        struct device dev;
-
-        struct kref refcount;
-        int slow_ref;
-        struct rcu_head rcu;
+        struct dma_chan_dev *dev;
 
         struct list_head device_node;
         struct dma_chan_percpu *local;
         int client_count;
+        int table_count;
 };
 
-#define to_dma_chan(p) container_of(p, struct dma_chan, dev)
-
-void dma_chan_cleanup(struct kref *kref);
-
-static inline void dma_chan_get(struct dma_chan *chan)
-{
-        if (unlikely(chan->slow_ref))
-                kref_get(&chan->refcount);
-        else {
-                local_inc(&(per_cpu_ptr(chan->local, get_cpu())->refcount));
-                put_cpu();
-        }
-}
+/**
+ * struct dma_chan_dev - relate sysfs device node to backing channel device
+ * @chan - driver channel device
+ * @device - sysfs device
+ * @dev_id - parent dma_device dev_id
+ * @idr_ref - reference count to gate release of dma_device dev_id
+ */
+struct dma_chan_dev {
+        struct dma_chan *chan;
+        struct device device;
+        int dev_id;
+        atomic_t *idr_ref;
+};
 
-static inline void dma_chan_put(struct dma_chan *chan)
+static inline const char *dma_chan_name(struct dma_chan *chan)
 {
-        if (unlikely(chan->slow_ref))
-                kref_put(&chan->refcount, dma_chan_cleanup);
-        else {
-                local_dec(&(per_cpu_ptr(chan->local, get_cpu())->refcount));
-                put_cpu();
-        }
+        return dev_name(&chan->dev->device);
 }
 
-/*
- * typedef dma_event_callback - function pointer to a DMA event callback
- * For each channel added to the system this routine is called for each client.
- * If the client would like to use the channel it returns '1' to signal (ack)
- * the dmaengine core to take out a reference on the channel and its
- * corresponding device.  A client must not 'ack' an available channel more
- * than once.  When a channel is removed all clients are notified.  If a client
- * is using the channel it must 'ack' the removal.  A client must not 'ack' a
- * removed channel more than once.
- * @client - 'this' pointer for the client context
- * @chan - channel to be acted upon
- * @state - available or removed
- */
-struct dma_client;
-typedef enum dma_state_client (*dma_event_callback) (struct dma_client *client,
-                struct dma_chan *chan, enum dma_state state);
+void dma_chan_cleanup(struct kref *kref);
 
 /**
- * struct dma_client - info on the entity making use of DMA services
- * @event_callback: func ptr to call when something happens
- * @cap_mask: only return channels that satisfy the requested capabilities
- *  a value of zero corresponds to any capability
- * @slave: data for preparing slave transfer. Must be non-NULL iff the
- *  DMA_SLAVE capability is requested.
- * @global_node: list_head for global dma_client_list
+ * typedef dma_filter_fn - callback filter for dma_request_channel
+ * @chan: channel to be reviewed
+ * @filter_param: opaque parameter passed through dma_request_channel
+ *
+ * When this optional parameter is specified in a call to dma_request_channel a
+ * suitable channel is passed to this routine for further dispositioning before
+ * being returned.  Where 'suitable' indicates a non-busy channel that
+ * satisfies the given capability mask.  It returns 'true' to indicate that the
+ * channel is suitable.
  */
-struct dma_client {
-        dma_event_callback      event_callback;
-        dma_cap_mask_t          cap_mask;
-        struct dma_slave        *slave;
-        struct list_head        global_node;
-};
+typedef bool (*dma_filter_fn)(struct dma_chan *chan, void *filter_param);
 
 typedef void (*dma_async_tx_callback)(void *dma_async_param);
 /**
@@ -323,14 +235,10 @@ struct dma_device {
         dma_cap_mask_t  cap_mask;
         int max_xor;
 
-        struct kref refcount;
-        struct completion done;
-
         int dev_id;
         struct device *dev;
 
-        int (*device_alloc_chan_resources)(struct dma_chan *chan,
-                        struct dma_client *client);
+        int (*device_alloc_chan_resources)(struct dma_chan *chan);
         void (*device_free_chan_resources)(struct dma_chan *chan);
 
         struct dma_async_tx_descriptor *(*device_prep_dma_memcpy)(
@@ -362,9 +270,8 @@ struct dma_device {
 
 /* --- public DMA engine API --- */
 
-void dma_async_client_register(struct dma_client *client);
-void dma_async_client_unregister(struct dma_client *client);
-void dma_async_client_chan_request(struct dma_client *client);
+void dmaengine_get(void);
+void dmaengine_put(void);
 dma_cookie_t dma_async_memcpy_buf_to_buf(struct dma_chan *chan,
         void *dest, void *src, size_t len);
 dma_cookie_t dma_async_memcpy_buf_to_pg(struct dma_chan *chan,
@@ -406,6 +313,12 @@ __dma_cap_set(enum dma_transaction_type tx_type, dma_cap_mask_t *dstp)
         set_bit(tx_type, dstp->bits);
 }
 
+#define dma_cap_zero(mask) __dma_cap_zero(&(mask))
+static inline void __dma_cap_zero(dma_cap_mask_t *dstp)
+{
+        bitmap_zero(dstp->bits, DMA_TX_TYPE_END);
+}
+
 #define dma_has_cap(tx, mask) __dma_has_cap((tx), &(mask))
 static inline int
 __dma_has_cap(enum dma_transaction_type tx_type, dma_cap_mask_t *srcp)
@@ -475,11 +388,25 @@ static inline enum dma_status dma_async_is_complete(dma_cookie_t cookie,
 }
 
 enum dma_status dma_sync_wait(struct dma_chan *chan, dma_cookie_t cookie);
+#ifdef CONFIG_DMA_ENGINE
+enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx);
+#else
+static inline enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx)
+{
+        return DMA_SUCCESS;
+}
+#endif
 
 /* --- DMA device --- */
 
 int dma_async_device_register(struct dma_device *device);
 void dma_async_device_unregister(struct dma_device *device);
+void dma_run_dependencies(struct dma_async_tx_descriptor *tx);
+struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type);
+void dma_issue_pending_all(void);
+#define dma_request_channel(mask, x, y) __dma_request_channel(&(mask), x, y)
+struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param);
+void dma_release_channel(struct dma_chan *chan);
 
 /* --- Helper iov-locking functions --- */
 
diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h
index 04d217b442bf..d797dde247f7 100644
--- a/include/linux/dw_dmac.h
+++ b/include/linux/dw_dmac.h
@@ -22,14 +22,34 @@ struct dw_dma_platform_data {
 };
 
 /**
+ * enum dw_dma_slave_width - DMA slave register access width.
+ * @DMA_SLAVE_WIDTH_8BIT: Do 8-bit slave register accesses
+ * @DMA_SLAVE_WIDTH_16BIT: Do 16-bit slave register accesses
+ * @DMA_SLAVE_WIDTH_32BIT: Do 32-bit slave register accesses
+ */
+enum dw_dma_slave_width {
+        DW_DMA_SLAVE_WIDTH_8BIT,
+        DW_DMA_SLAVE_WIDTH_16BIT,
+        DW_DMA_SLAVE_WIDTH_32BIT,
+};
+
+/**
  * struct dw_dma_slave - Controller-specific information about a slave
- * @slave: Generic information about the slave
- * @ctl_lo: Platform-specific initializer for the CTL_LO register
+ *
+ * @dma_dev: required DMA master device
+ * @tx_reg: physical address of data register used for
+ *      memory-to-peripheral transfers
+ * @rx_reg: physical address of data register used for
+ *      peripheral-to-memory transfers
+ * @reg_width: peripheral register width
  * @cfg_hi: Platform-specific initializer for the CFG_HI register
  * @cfg_lo: Platform-specific initializer for the CFG_LO register
  */
 struct dw_dma_slave {
-        struct dma_slave        slave;
+        struct device           *dma_dev;
+        dma_addr_t              tx_reg;
+        dma_addr_t              rx_reg;
+        enum dw_dma_slave_width reg_width;
         u32                     cfg_hi;
         u32                     cfg_lo;
 };
@@ -54,9 +74,4 @@ struct dw_dma_slave {
 #define DWC_CFGL_HS_DST_POL     (1 << 18)       /* dst handshake active low */
 #define DWC_CFGL_HS_SRC_POL     (1 << 19)       /* src handshake active low */
 
-static inline struct dw_dma_slave *to_dw_dma_slave(struct dma_slave *slave)
-{
-        return container_of(slave, struct dw_dma_slave, slave);
-}
-
 #endif /* DW_DMAC_H */
diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h
index 00e2b575021f..88d3d8fbf9f2 100644
--- a/include/linux/mtd/cfi.h
+++ b/include/linux/mtd/cfi.h
@@ -520,6 +520,7 @@ struct cfi_fixup {
 
 #define CFI_MFR_AMD 0x0001
 #define CFI_MFR_ATMEL 0x001F
+#define CFI_MFR_SAMSUNG 0x00EC
 #define CFI_MFR_ST  0x0020      /* STMicroelectronics */
 
 void cfi_fixup(struct mtd_info *mtd, struct cfi_fixup* fixups);
diff --git a/include/linux/mtd/ftl.h b/include/linux/mtd/ftl.h
index 0be442f881dd..0555f7a0b9ed 100644
--- a/include/linux/mtd/ftl.h
+++ b/include/linux/mtd/ftl.h
@@ -32,25 +32,25 @@
 #define _LINUX_FTL_H
 
 typedef struct erase_unit_header_t {
-    u_int8_t    LinkTargetTuple[5];
-    u_int8_t    DataOrgTuple[10];
-    u_int8_t    NumTransferUnits;
-    u_int32_t   EraseCount;
-    u_int16_t   LogicalEUN;
-    u_int8_t    BlockSize;
-    u_int8_t    EraseUnitSize;
-    u_int16_t   FirstPhysicalEUN;
-    u_int16_t   NumEraseUnits;
-    u_int32_t   FormattedSize;
-    u_int32_t   FirstVMAddress;
-    u_int16_t   NumVMPages;
-    u_int8_t    Flags;
-    u_int8_t    Code;
-    u_int32_t   SerialNumber;
-    u_int32_t   AltEUHOffset;
-    u_int32_t   BAMOffset;
-    u_int8_t    Reserved[12];
-    u_int8_t    EndTuple[2];
+    uint8_t     LinkTargetTuple[5];
+    uint8_t     DataOrgTuple[10];
+    uint8_t     NumTransferUnits;
+    uint32_t    EraseCount;
+    uint16_t    LogicalEUN;
+    uint8_t     BlockSize;
+    uint8_t     EraseUnitSize;
+    uint16_t    FirstPhysicalEUN;
+    uint16_t    NumEraseUnits;
+    uint32_t    FormattedSize;
+    uint32_t    FirstVMAddress;
+    uint16_t    NumVMPages;
+    uint8_t     Flags;
+    uint8_t     Code;
+    uint32_t    SerialNumber;
+    uint32_t    AltEUHOffset;
+    uint32_t    BAMOffset;
+    uint8_t     Reserved[12];
+    uint8_t     EndTuple[2];
 } erase_unit_header_t;
 
 /* Flags in erase_unit_header_t */
diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h
index aa30244492c6..b981b8772217 100644
--- a/include/linux/mtd/map.h
+++ b/include/linux/mtd/map.h
@@ -223,6 +223,7 @@ struct map_info {
            must leave it enabled. */
         void (*set_vpp)(struct map_info *, int);
 
+        unsigned long pfow_base;
         unsigned long map_priv_1;
         unsigned long map_priv_2;
         void *fldrv_priv;
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 64433eb411d7..3aa5d77c2cdb 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -15,6 +15,8 @@
 #include <linux/mtd/compatmac.h>
 #include <mtd/mtd-abi.h>
 
+#include <asm/div64.h>
+
 #define MTD_CHAR_MAJOR 90
 #define MTD_BLOCK_MAJOR 31
 #define MAX_MTD_DEVICES 32
@@ -25,20 +27,20 @@
 #define MTD_ERASE_DONE          0x08
 #define MTD_ERASE_FAILED        0x10
 
-#define MTD_FAIL_ADDR_UNKNOWN 0xffffffff
+#define MTD_FAIL_ADDR_UNKNOWN -1LL
 
 /* If the erase fails, fail_addr might indicate exactly which block failed.  If
    fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level or was not
    specific to any particular block. */
 struct erase_info {
         struct mtd_info *mtd;
-        u_int32_t addr;
-        u_int32_t len;
-        u_int32_t fail_addr;
+        uint64_t addr;
+        uint64_t len;
+        uint64_t fail_addr;
         u_long time;
         u_long retries;
-        u_int dev;
-        u_int cell;
+        unsigned dev;
+        unsigned cell;
         void (*callback) (struct erase_info *self);
         u_long priv;
         u_char state;
@@ -46,9 +48,9 @@ struct erase_info {
 };
 
 struct mtd_erase_region_info {
-        u_int32_t offset;                       /* At which this region starts, from the beginning of the MTD */
-        u_int32_t erasesize;            /* For this region */
-        u_int32_t numblocks;            /* Number of blocks of erasesize in this region */
+        uint64_t offset;                        /* At which this region starts, from the beginning of the MTD */
+        uint32_t erasesize;             /* For this region */
+        uint32_t numblocks;             /* Number of blocks of erasesize in this region */
         unsigned long *lockmap;         /* If keeping bitmap of locks */
 };
 
@@ -100,14 +102,14 @@ struct mtd_oob_ops {
 
 struct mtd_info {
         u_char type;
-        u_int32_t flags;
-        u_int32_t size;  // Total size of the MTD
+        uint32_t flags;
+        uint64_t size;   // Total size of the MTD
 
         /* "Major" erase size for the device. Naïve users may take this
          * to be the only erase size available, or may use the more detailed
          * information below if they desire
          */
-        u_int32_t erasesize;
+        uint32_t erasesize;
         /* Minimal writable flash unit size. In case of NOR flash it is 1 (even
          * though individual bits can be cleared), in case of NAND flash it is
          * one NAND page (or half, or one-fourths of it), in case of ECC-ed NOR
@@ -115,10 +117,20 @@ struct mtd_info {
          * Any driver registering a struct mtd_info must ensure a writesize of
          * 1 or larger.
          */
-        u_int32_t writesize;
+        uint32_t writesize;
+
+        uint32_t oobsize;   // Amount of OOB data per block (e.g. 16)
+        uint32_t oobavail;  // Available OOB bytes per block
 
-        u_int32_t oobsize;   // Amount of OOB data per block (e.g. 16)
-        u_int32_t oobavail;  // Available OOB bytes per block
+        /*
+         * If erasesize is a power of 2 then the shift is stored in
+         * erasesize_shift otherwise erasesize_shift is zero. Ditto writesize.
+         */
+        unsigned int erasesize_shift;
+        unsigned int writesize_shift;
+        /* Masks based on erasesize_shift and writesize_shift */
+        unsigned int erasesize_mask;
+        unsigned int writesize_mask;
 
         // Kernel-only stuff starts here.
         const char *name;
@@ -190,8 +202,8 @@ struct mtd_info {
         void (*sync) (struct mtd_info *mtd);
 
         /* Chip-supported device locking */
-        int (*lock) (struct mtd_info *mtd, loff_t ofs, size_t len);
-        int (*unlock) (struct mtd_info *mtd, loff_t ofs, size_t len);
+        int (*lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
+        int (*unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
 
         /* Power Management functions */
         int (*suspend) (struct mtd_info *mtd);
@@ -221,6 +233,35 @@ struct mtd_info {
         void (*put_device) (struct mtd_info *mtd);
 };
 
+static inline uint32_t mtd_div_by_eb(uint64_t sz, struct mtd_info *mtd)
+{
+        if (mtd->erasesize_shift)
+                return sz >> mtd->erasesize_shift;
+        do_div(sz, mtd->erasesize);
+        return sz;
+}
+
+static inline uint32_t mtd_mod_by_eb(uint64_t sz, struct mtd_info *mtd)
+{
+        if (mtd->erasesize_shift)
+                return sz & mtd->erasesize_mask;
+        return do_div(sz, mtd->erasesize);
+}
+
+static inline uint32_t mtd_div_by_ws(uint64_t sz, struct mtd_info *mtd)
+{
+        if (mtd->writesize_shift)
+                return sz >> mtd->writesize_shift;
+        do_div(sz, mtd->writesize);
+        return sz;
+}
+
+static inline uint32_t mtd_mod_by_ws(uint64_t sz, struct mtd_info *mtd)
+{
+        if (mtd->writesize_shift)
+                return sz & mtd->writesize_mask;
+        return do_div(sz, mtd->writesize);
+}
 
         /* Kernel-side ioctl definitions */
 
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 733d3f3b4eb8..db5b63da2a7e 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -335,17 +335,12 @@ struct nand_buffers {
  * @erase_cmd:          [INTERN] erase command write function, selectable due to AND support
  * @scan_bbt:           [REPLACEABLE] function to scan bad block table
  * @chip_delay:         [BOARDSPECIFIC] chip dependent delay for transfering data from array to read regs (tR)
- * @wq:                 [INTERN] wait queue to sleep on if a NAND operation is in progress
  * @state:              [INTERN] the current state of the NAND device
  * @oob_poi:            poison value buffer
  * @page_shift:         [INTERN] number of address bits in a page (column address bits)
  * @phys_erase_shift:   [INTERN] number of address bits in a physical eraseblock
  * @bbt_erase_shift:    [INTERN] number of address bits in a bbt entry
  * @chip_shift:         [INTERN] number of address bits in one chip
- * @datbuf:             [INTERN] internal buffer for one page + oob
- * @oobbuf:             [INTERN] oob buffer for one eraseblock
- * @oobdirty:           [INTERN] indicates that oob_buf must be reinitialized
- * @data_poi:           [INTERN] pointer to a data buffer
  * @options:            [BOARDSPECIFIC] various chip options. They can partly be set to inform nand_scan about
  *                      special functionality. See the defines for further explanation
  * @badblockpos:        [INTERN] position of the bad block marker in the oob area
@@ -399,7 +394,7 @@ struct nand_chip {
         int             bbt_erase_shift;
         int             chip_shift;
         int             numchips;
-        unsigned long   chipsize;
+        uint64_t        chipsize;
         int             pagemask;
         int             pagebuf;
         int             subpagesize;
diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h
index c92b4d439609..a45dd831b3f8 100644
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -36,9 +36,9 @@
 
 struct mtd_partition {
         char *name;                     /* identifier string */
-        u_int32_t size;                 /* partition size */
-        u_int32_t offset;               /* offset within the master MTD space */
-        u_int32_t mask_flags;           /* master MTD flags to mask out for this partition */
+        uint64_t size;                  /* partition size */
+        uint64_t offset;                /* offset within the master MTD space */
+        uint32_t mask_flags;            /* master MTD flags to mask out for this partition */
         struct nand_ecclayout *ecclayout;       /* out of band layout for this partition (NAND only)*/
         struct mtd_info **mtdp;         /* pointer to store the MTD object */
 };
diff --git a/include/linux/mtd/pfow.h b/include/linux/mtd/pfow.h
new file mode 100644
index 000000000000..b730d4f84655
--- /dev/null
+++ b/include/linux/mtd/pfow.h
@@ -0,0 +1,159 @@
+/* Primary function overlay window definitions
+ * and service functions used by LPDDR chips
+ */
+#ifndef __LINUX_MTD_PFOW_H
+#define __LINUX_MTD_PFOW_H
+
+#include <linux/mtd/qinfo.h>
+
+/* PFOW registers addressing */
+/* Address of symbol "P" */
+#define PFOW_QUERY_STRING_P                     0x0000
+/* Address of symbol "F" */
+#define PFOW_QUERY_STRING_F                     0x0002
+/* Address of symbol "O" */
+#define PFOW_QUERY_STRING_O                     0x0004
+/* Address of symbol "W" */
+#define PFOW_QUERY_STRING_W                     0x0006
+/* Identification info for LPDDR chip */
+#define PFOW_MANUFACTURER_ID                    0x0020
+#define PFOW_DEVICE_ID                          0x0022
+/* Address in PFOW where prog buffer can can be found */
+#define PFOW_PROGRAM_BUFFER_OFFSET              0x0040
+/* Size of program buffer in words */
+#define PFOW_PROGRAM_BUFFER_SIZE                0x0042
+/* Address command code register */
+#define PFOW_COMMAND_CODE                       0x0080
+/* command data register */
+#define PFOW_COMMAND_DATA                       0x0084
+/* command address register lower address bits */
+#define PFOW_COMMAND_ADDRESS_L                  0x0088
+/* command address register upper address bits */
+#define PFOW_COMMAND_ADDRESS_H                  0x008a
+/* number of bytes to be proggrammed lower address bits */
+#define PFOW_DATA_COUNT_L                       0x0090
+/* number of bytes to be proggrammed higher address bits */
+#define PFOW_DATA_COUNT_H                       0x0092
+/* command execution register, the only possible value is 0x01 */
+#define PFOW_COMMAND_EXECUTE                    0x00c0
+/* 0x01 should be written at this address to clear buffer */
+#define PFOW_CLEAR_PROGRAM_BUFFER               0x00c4
+/* device program/erase suspend register */
+#define PFOW_PROGRAM_ERASE_SUSPEND              0x00c8
+/* device status register */
+#define PFOW_DSR                                0x00cc
+
+/* LPDDR memory device command codes */
+/* They are possible values of PFOW command code register */
+#define LPDDR_WORD_PROGRAM              0x0041
+#define LPDDR_BUFF_PROGRAM              0x00E9
+#define LPDDR_BLOCK_ERASE               0x0020
+#define LPDDR_LOCK_BLOCK                0x0061
+#define LPDDR_UNLOCK_BLOCK              0x0062
+#define LPDDR_READ_BLOCK_LOCK_STATUS    0x0065
+#define LPDDR_INFO_QUERY                0x0098
+#define LPDDR_READ_OTP                  0x0097
+#define LPDDR_PROG_OTP                  0x00C0
+#define LPDDR_RESUME                    0x00D0
+
+/* Defines possible value of PFOW command execution register */
+#define LPDDR_START_EXECUTION                   0x0001
+
+/* Defines possible value of PFOW program/erase suspend register */
+#define LPDDR_SUSPEND                           0x0001
+
+/* Possible values of PFOW device status register */
+/* access R - read; RC read & clearable */
+#define DSR_DPS                 (1<<1) /* RC; device protect status
+                                        * 0 - not protected 1 - locked */
+#define DSR_PSS                 (1<<2) /* R; program suspend status;
+                                        * 0-prog in progress/completed,
+                                        * 1- prog suspended */
+#define DSR_VPPS                (1<<3) /* RC; 0-Vpp OK, * 1-Vpp low */
+#define DSR_PROGRAM_STATUS      (1<<4) /* RC; 0-successful, 1-error */
+#define DSR_ERASE_STATUS        (1<<5) /* RC; erase or blank check status;
+                                        * 0-success erase/blank check,
+                                        * 1 blank check error */
+#define DSR_ESS                 (1<<6) /* R; erase suspend status;
+                                        * 0-erase in progress/complete,
+                                        * 1 erase suspended */
+#define DSR_READY_STATUS        (1<<7) /* R; Device status
+                                        * 0-busy,
+                                        * 1-ready */
+#define DSR_RPS                 (0x3<<8) /* RC;  region program status
+                                        * 00 - Success,
+                                        * 01-re-program attempt in region with
+                                        * object mode data,
+                                        * 10-object mode program w attempt in
+                                        * region with control mode data
+                                        * 11-attempt to program invalid half
+                                        * with 0x41 command */
+#define DSR_AOS                 (1<<12) /* RC; 1- AO related failure */
+#define DSR_AVAILABLE           (1<<15) /* R; Device availbility
+                                        * 1 - Device available
+                                        * 0 - not available */
+
+/* The superset of all possible error bits in DSR */
+#define DSR_ERR                 0x133A
+
+static inline void send_pfow_command(struct map_info *map,
+                                unsigned long cmd_code, unsigned long adr,
+                                unsigned long len, map_word *datum)
+{
+        int bits_per_chip = map_bankwidth(map) * 8;
+        int chipnum;
+        struct lpddr_private *lpddr = map->fldrv_priv;
+        chipnum = adr >> lpddr->chipshift;
+
+        map_write(map, CMD(cmd_code), map->pfow_base + PFOW_COMMAND_CODE);
+        map_write(map, CMD(adr & ((1<<bits_per_chip) - 1)),
+                                map->pfow_base + PFOW_COMMAND_ADDRESS_L);
+        map_write(map, CMD(adr>>bits_per_chip),
+                                map->pfow_base + PFOW_COMMAND_ADDRESS_H);
+        if (len) {
+                map_write(map, CMD(len & ((1<<bits_per_chip) - 1)),
+                                        map->pfow_base + PFOW_DATA_COUNT_L);
+                map_write(map, CMD(len>>bits_per_chip),
+                                        map->pfow_base + PFOW_DATA_COUNT_H);
+        }
+        if (datum)
+                map_write(map, *datum, map->pfow_base + PFOW_COMMAND_DATA);
+
+        /* Command execution start */
+        map_write(map, CMD(LPDDR_START_EXECUTION),
+                        map->pfow_base + PFOW_COMMAND_EXECUTE);
+}
+
+static inline void print_drs_error(unsigned dsr)
+{
+        int prog_status = (dsr & DSR_RPS) >> 8;
+
+        if (!(dsr & DSR_AVAILABLE))
+                printk(KERN_NOTICE"DSR.15: (0) Device not Available\n");
+        if (prog_status & 0x03)
+                printk(KERN_NOTICE"DSR.9,8: (11) Attempt to program invalid "
+                                                "half with 41h command\n");
+        else if (prog_status & 0x02)
+                printk(KERN_NOTICE"DSR.9,8: (10) Object Mode Program attempt "
+                                        "in region with Control Mode data\n");
+        else if (prog_status &  0x01)
+                printk(KERN_NOTICE"DSR.9,8: (01) Program attempt in region "
+                                                "with Object Mode data\n");
+        if (!(dsr & DSR_READY_STATUS))
+                printk(KERN_NOTICE"DSR.7: (0) Device is Busy\n");
+        if (dsr & DSR_ESS)
+                printk(KERN_NOTICE"DSR.6: (1) Erase Suspended\n");
+        if (dsr & DSR_ERASE_STATUS)
+                printk(KERN_NOTICE"DSR.5: (1) Erase/Blank check error\n");
+        if (dsr & DSR_PROGRAM_STATUS)
+                printk(KERN_NOTICE"DSR.4: (1) Program Error\n");
+        if (dsr & DSR_VPPS)
+                printk(KERN_NOTICE"DSR.3: (1) Vpp low detect, operation "
+                                        "aborted\n");
+        if (dsr & DSR_PSS)
+                printk(KERN_NOTICE"DSR.2: (1) Program suspended\n");
+        if (dsr & DSR_DPS)
+                printk(KERN_NOTICE"DSR.1: (1) Aborted Erase/Program attempt "
+                                        "on locked block\n");
+}
+#endif /* __LINUX_MTD_PFOW_H */
diff --git a/include/linux/mtd/physmap.h b/include/linux/mtd/physmap.h
index c8e63a5ee72e..76f7cabf07d3 100644
--- a/include/linux/mtd/physmap.h
+++ b/include/linux/mtd/physmap.h
@@ -24,6 +24,7 @@ struct physmap_flash_data {
         unsigned int            width;
         void                    (*set_vpp)(struct map_info *, int);
         unsigned int            nr_parts;
+        unsigned int            pfow_base;
         struct mtd_partition    *parts;
 };
 
diff --git a/include/linux/mtd/qinfo.h b/include/linux/mtd/qinfo.h
new file mode 100644
index 000000000000..7b3d487d8b3f
--- /dev/null
+++ b/include/linux/mtd/qinfo.h
@@ -0,0 +1,91 @@
+#ifndef __LINUX_MTD_QINFO_H
+#define __LINUX_MTD_QINFO_H
+
+#include <linux/mtd/map.h>
+#include <linux/wait.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/flashchip.h>
+#include <linux/mtd/partitions.h>
+
+/* lpddr_private describes lpddr flash chip in memory map
+ * @ManufactId - Chip Manufacture ID
+ * @DevId - Chip Device ID
+ * @qinfo - pointer to qinfo records describing the chip
+ * @numchips - number of chips including virual RWW partitions
+ * @chipshift - Chip/partiton size 2^chipshift
+ * @chips - per-chip data structure
+ */
+struct lpddr_private {
+        uint16_t ManufactId;
+        uint16_t DevId;
+        struct qinfo_chip *qinfo;
+        int numchips;
+        unsigned long chipshift;
+        struct flchip chips[0];
+};
+
+/* qinfo_query_info structure contains request information for
+ * each qinfo record
+ * @major - major number of qinfo record
+ * @major - minor number of qinfo record
+ * @id_str - descriptive string to access the record
+ * @desc - detailed description for the qinfo record
+ */
+struct qinfo_query_info {
+        uint8_t major;
+        uint8_t minor;
+        char *id_str;
+        char *desc;
+};
+
+/*
+ * qinfo_chip structure contains necessary qinfo records data
+ * @DevSizeShift - Device size 2^n bytes
+ * @BufSizeShift - Program buffer size 2^n bytes
+ * @TotalBlocksNum - Total number of blocks
+ * @UniformBlockSizeShift - Uniform block size 2^UniformBlockSizeShift bytes
+ * @HWPartsNum - Number of hardware partitions
+ * @SuspEraseSupp - Suspend erase supported
+ * @SingleWordProgTime - Single word program 2^SingleWordProgTime u-sec
+ * @ProgBufferTime - Program buffer write 2^ProgBufferTime u-sec
+ * @BlockEraseTime - Block erase 2^BlockEraseTime m-sec
+ */
+struct qinfo_chip {
+        /* General device info */
+        uint16_t DevSizeShift;
+        uint16_t BufSizeShift;
+        /* Erase block information */
+        uint16_t TotalBlocksNum;
+        uint16_t UniformBlockSizeShift;
+        /* Partition information */
+        uint16_t HWPartsNum;
+        /* Optional features */
+        uint16_t SuspEraseSupp;
+        /* Operation typical time */
+        uint16_t SingleWordProgTime;
+        uint16_t ProgBufferTime;
+        uint16_t BlockEraseTime;
+};
+
+/* defines for fixup usage */
+#define LPDDR_MFR_ANY           0xffff
+#define LPDDR_ID_ANY            0xffff
+#define NUMONYX_MFGR_ID         0x0089
+#define R18_DEVICE_ID_1G        0x893c
+
+static inline map_word lpddr_build_cmd(u_long cmd, struct map_info *map)
+{
+        map_word val = { {0} };
+        val.x[0] = cmd;
+        return val;
+}
+
+#define CMD(x) lpddr_build_cmd(x, map)
+#define CMDVAL(cmd) cmd.x[0]
+
+struct mtd_info *lpddr_cmdset(struct map_info *);
+
+#endif
+
diff --git a/include/linux/mtd/sharpsl.h b/include/linux/mtd/sharpsl.h
new file mode 100644
index 000000000000..25f4d2a845c1
--- /dev/null
+++ b/include/linux/mtd/sharpsl.h
@@ -0,0 +1,20 @@
+/*
+ * SharpSL NAND support
+ *
+ * Copyright (C) 2008 Dmitry Baryshkov
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/mtd/nand.h>
+#include <linux/mtd/nand_ecc.h>
+#include <linux/mtd/partitions.h>
+
+struct sharpsl_nand_platform_data {
+        struct nand_bbt_descr   *badblock_pattern;
+        struct nand_ecclayout   *ecc_layout;
+        struct mtd_partition    *partitions;
+        unsigned int            nr_partitions;
+};
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 114091be8872..f24556813375 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1125,9 +1125,6 @@ struct softnet_data
         struct sk_buff          *completion_queue;
 
         struct napi_struct      backlog;
-#ifdef CONFIG_NET_DMA
-        struct dma_chan         *net_dma;
-#endif
 };
 
 DECLARE_PER_CPU(struct softnet_data,softnet_data);
diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h
index 1ce9fe572e51..1d9518bc4c58 100644
--- a/include/linux/oprofile.h
+++ b/include/linux/oprofile.h
@@ -164,4 +164,22 @@ void oprofile_put_buff(unsigned long *buf, unsigned int start,
 unsigned long oprofile_get_cpu_buffer_size(void);
 void oprofile_cpu_buffer_inc_smpl_lost(void);
  
+/* cpu buffer functions */
+
+struct op_sample;
+
+struct op_entry {
+        struct ring_buffer_event *event;
+        struct op_sample *sample;
+        unsigned long irq_flags;
+        unsigned long size;
+        unsigned long *data;
+};
+
+void oprofile_write_reserve(struct op_entry *entry,
+                            struct pt_regs * const regs,
+                            unsigned long pc, int code, int size);
+int oprofile_add_data(struct op_entry *entry, unsigned long val);
+int oprofile_write_commit(struct op_entry *entry);
+
 #endif /* OPROFILE_H */
diff --git a/include/linux/pci_hotplug.h b/include/linux/pci_hotplug.h
index f7cc204fab07..20998746518e 100644
--- a/include/linux/pci_hotplug.h
+++ b/include/linux/pci_hotplug.h
@@ -223,7 +223,6 @@ struct hotplug_params {
 #ifdef CONFIG_ACPI
 #include <acpi/acpi.h>
 #include <acpi/acpi_bus.h>
-#include <acpi/actypes.h>
 extern acpi_status acpi_get_hp_params_from_firmware(struct pci_bus *bus,
                                 struct hotplug_params *hpp);
 int acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev, u32 flags);
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 2ce8207686e2..2b409c44db83 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -232,6 +232,11 @@ extern unsigned long get_safe_page(gfp_t gfp_mask);
 
 extern void hibernation_set_ops(struct platform_hibernation_ops *ops);
 extern int hibernate(void);
+extern int hibernate_nvs_register(unsigned long start, unsigned long size);
+extern int hibernate_nvs_alloc(void);
+extern void hibernate_nvs_free(void);
+extern void hibernate_nvs_save(void);
+extern void hibernate_nvs_restore(void);
 #else /* CONFIG_HIBERNATION */
 static inline int swsusp_page_is_forbidden(struct page *p) { return 0; }
 static inline void swsusp_set_page_free(struct page *p) {}
@@ -239,6 +244,14 @@ static inline void swsusp_unset_page_free(struct page *p) {}
 
 static inline void hibernation_set_ops(struct platform_hibernation_ops *ops) {}
 static inline int hibernate(void) { return -ENOSYS; }
+static inline int hibernate_nvs_register(unsigned long a, unsigned long b)
+{
+        return 0;
+}
+static inline int hibernate_nvs_alloc(void) { return 0; }
+static inline void hibernate_nvs_free(void) {}
+static inline void hibernate_nvs_save(void) {}
+static inline void hibernate_nvs_restore(void) {}
 #endif /* CONFIG_HIBERNATION */
 
 #ifdef CONFIG_PM_SLEEP
diff --git a/include/net/netdma.h b/include/net/netdma.h
index f28c6e064e8f..8ba8ce284eeb 100644
--- a/include/net/netdma.h
+++ b/include/net/netdma.h
@@ -24,17 +24,6 @@
 #include <linux/dmaengine.h>
 #include <linux/skbuff.h>
 
-static inline struct dma_chan *get_softnet_dma(void)
-{
-        struct dma_chan *chan;
-        rcu_read_lock();
-        chan = rcu_dereference(__get_cpu_var(softnet_data).net_dma);
-        if (chan)
-                dma_chan_get(chan);
-        rcu_read_unlock();
-        return chan;
-}
-
 int dma_skb_copy_datagram_iovec(struct dma_chan* chan,
                 struct sk_buff *skb, int offset, struct iovec *to,
                 size_t len, struct dma_pinned_list *pinned_list);
diff --git a/kernel/cred.c b/kernel/cred.c
index ff7bc071991c..043f78c133c4 100644
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -506,6 +506,7 @@ struct cred *prepare_kernel_cred(struct task_struct *daemon)
         else
                 old = get_cred(&init_cred);
 
+        *new = *old;
         get_uid(new->user);
         get_group_info(new->group_info);
 
@@ -529,6 +530,7 @@ struct cred *prepare_kernel_cred(struct task_struct *daemon)
 
 error:
         put_cred(new);
+        put_cred(old);
         return NULL;
 }
 EXPORT_SYMBOL(prepare_kernel_cred);
diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index f77d3819ef57..45e8541ab7e3 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -258,12 +258,12 @@ int hibernation_snapshot(int platform_mode)
 {
         int error;
 
-        /* Free memory before shutting down devices. */
-        error = swsusp_shrink_memory();
+        error = platform_begin(platform_mode);
         if (error)
                 return error;
 
-        error = platform_begin(platform_mode);
+        /* Free memory before shutting down devices. */
+        error = swsusp_shrink_memory();
         if (error)
                 goto Close;
 
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 5d2ab836e998..f5fc2d7680f2 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -25,6 +25,7 @@
 #include <linux/syscalls.h>
 #include <linux/console.h>
 #include <linux/highmem.h>
+#include <linux/list.h>
 
 #include <asm/uaccess.h>
 #include <asm/mmu_context.h>
@@ -192,12 +193,6 @@ static void *chain_alloc(struct chain_allocator *ca, unsigned int size)
         return ret;
 }
 
-static void chain_free(struct chain_allocator *ca, int clear_page_nosave)
-{
-        free_list_of_pages(ca->chain, clear_page_nosave);
-        memset(ca, 0, sizeof(struct chain_allocator));
-}
-
 /**
  *      Data types related to memory bitmaps.
  *
@@ -233,7 +228,7 @@ static void chain_free(struct chain_allocator *ca, int clear_page_nosave)
 #define BM_BITS_PER_BLOCK       (PAGE_SIZE << 3)
 
 struct bm_block {
-        struct bm_block *next;          /* next element of the list */
+        struct list_head hook;  /* hook into a list of bitmap blocks */
         unsigned long start_pfn;        /* pfn represented by the first bit */
         unsigned long end_pfn;  /* pfn represented by the last bit plus 1 */
         unsigned long *data;    /* bitmap representing pages */
@@ -244,24 +239,15 @@ static inline unsigned long bm_block_bits(struct bm_block *bb)
         return bb->end_pfn - bb->start_pfn;
 }
 
-struct zone_bitmap {
-        struct zone_bitmap *next;       /* next element of the list */
-        unsigned long start_pfn;        /* minimal pfn in this zone */
-        unsigned long end_pfn;          /* maximal pfn in this zone plus 1 */
-        struct bm_block *bm_blocks;     /* list of bitmap blocks */
-        struct bm_block *cur_block;     /* recently used bitmap block */
-};
-
 /* strcut bm_position is used for browsing memory bitmaps */
 
 struct bm_position {
-        struct zone_bitmap *zone_bm;
         struct bm_block *block;
         int bit;
 };
 
 struct memory_bitmap {
-        struct zone_bitmap *zone_bm_list;       /* list of zone bitmaps */
+        struct list_head blocks;        /* list of bitmap blocks */
         struct linked_page *p_list;     /* list of pages used to store zone
                                          * bitmap objects and bitmap block
                                          * objects
@@ -273,11 +259,7 @@ struct memory_bitmap {
 
 static void memory_bm_position_reset(struct memory_bitmap *bm)
 {
-        struct zone_bitmap *zone_bm;
-
-        zone_bm = bm->zone_bm_list;
-        bm->cur.zone_bm = zone_bm;
-        bm->cur.block = zone_bm->bm_blocks;
+        bm->cur.block = list_entry(bm->blocks.next, struct bm_block, hook);
         bm->cur.bit = 0;
 }
 
@@ -285,151 +267,184 @@ static void memory_bm_free(struct memory_bitmap *bm, int clear_nosave_free);
 
 /**
  *      create_bm_block_list - create a list of block bitmap objects
+ *      @nr_blocks - number of blocks to allocate
+ *      @list - list to put the allocated blocks into
+ *      @ca - chain allocator to be used for allocating memory
  */
-
-static inline struct bm_block *
-create_bm_block_list(unsigned int nr_blocks, struct chain_allocator *ca)
+static int create_bm_block_list(unsigned long pages,
+                                struct list_head *list,
+                                struct chain_allocator *ca)
 {
-        struct bm_block *bblist = NULL;
+        unsigned int nr_blocks = DIV_ROUND_UP(pages, BM_BITS_PER_BLOCK);
 
         while (nr_blocks-- > 0) {
                 struct bm_block *bb;
 
                 bb = chain_alloc(ca, sizeof(struct bm_block));
                 if (!bb)
-                        return NULL;
-
-                bb->next = bblist;
-                bblist = bb;
+                        return -ENOMEM;
+                list_add(&bb->hook, list);
         }
-        return bblist;
+
+        return 0;
 }
 
+struct mem_extent {
+        struct list_head hook;
+        unsigned long start;
+        unsigned long end;
+};
+
 /**
- *      create_zone_bm_list - create a list of zone bitmap objects
+ *      free_mem_extents - free a list of memory extents
+ *      @list - list of extents to empty
  */
+static void free_mem_extents(struct list_head *list)
+{
+        struct mem_extent *ext, *aux;
 
-static inline struct zone_bitmap *
-create_zone_bm_list(unsigned int nr_zones, struct chain_allocator *ca)
+        list_for_each_entry_safe(ext, aux, list, hook) {
+                list_del(&ext->hook);
+                kfree(ext);
+        }
+}
+
+/**
+ *      create_mem_extents - create a list of memory extents representing
+ *                           contiguous ranges of PFNs
+ *      @list - list to put the extents into
+ *      @gfp_mask - mask to use for memory allocations
+ */
+static int create_mem_extents(struct list_head *list, gfp_t gfp_mask)
 {
-        struct zone_bitmap *zbmlist = NULL;
+        struct zone *zone;
 
-        while (nr_zones-- > 0) {
-                struct zone_bitmap *zbm;
+        INIT_LIST_HEAD(list);
 
-                zbm = chain_alloc(ca, sizeof(struct zone_bitmap));
-                if (!zbm)
-                        return NULL;
+        for_each_zone(zone) {
+                unsigned long zone_start, zone_end;
+                struct mem_extent *ext, *cur, *aux;
+
+                if (!populated_zone(zone))
+                        continue;
 
-                zbm->next = zbmlist;
-                zbmlist = zbm;
+                zone_start = zone->zone_start_pfn;
+                zone_end = zone->zone_start_pfn + zone->spanned_pages;
+
+                list_for_each_entry(ext, list, hook)
+                        if (zone_start <= ext->end)
+                                break;
+
+                if (&ext->hook == list || zone_end < ext->start) {
+                        /* New extent is necessary */
+                        struct mem_extent *new_ext;
+
+                        new_ext = kzalloc(sizeof(struct mem_extent), gfp_mask);
+                        if (!new_ext) {
+                                free_mem_extents(list);
+                                return -ENOMEM;
+                        }
+                        new_ext->start = zone_start;
+                        new_ext->end = zone_end;
+                        list_add_tail(&new_ext->hook, &ext->hook);
+                        continue;
+                }
+
+                /* Merge this zone's range of PFNs with the existing one */
+                if (zone_start < ext->start)
+                        ext->start = zone_start;
+                if (zone_end > ext->end)
+                        ext->end = zone_end;
+
+                /* More merging may be possible */
+                cur = ext;
+                list_for_each_entry_safe_continue(cur, aux, list, hook) {
+                        if (zone_end < cur->start)
+                                break;
+                        if (zone_end < cur->end)
+                                ext->end = cur->end;
+                        list_del(&cur->hook);
+                        kfree(cur);
+                }
         }
-        return zbmlist;
+
+        return 0;
 }
 
 /**
   *     memory_bm_create - allocate memory for a memory bitmap
   */
-
 static int
 memory_bm_create(struct memory_bitmap *bm, gfp_t gfp_mask, int safe_needed)
 {
         struct chain_allocator ca;
-        struct zone *zone;
-        struct zone_bitmap *zone_bm;
-        struct bm_block *bb;
-        unsigned int nr;
+        struct list_head mem_extents;
+        struct mem_extent *ext;
+        int error;
 
         chain_init(&ca, gfp_mask, safe_needed);
+        INIT_LIST_HEAD(&bm->blocks);
 
-        /* Compute the number of zones */
-        nr = 0;
-        for_each_zone(zone)
-                if (populated_zone(zone))
-                        nr++;
-
-        /* Allocate the list of zones bitmap objects */
-        zone_bm = create_zone_bm_list(nr, &ca);
-        bm->zone_bm_list = zone_bm;
-        if (!zone_bm) {
-                chain_free(&ca, PG_UNSAFE_CLEAR);
-                return -ENOMEM;
-        }
-
-        /* Initialize the zone bitmap objects */
-        for_each_zone(zone) {
-                unsigned long pfn;
+        error = create_mem_extents(&mem_extents, gfp_mask);
+        if (error)
+                return error;
 
-                if (!populated_zone(zone))
-                        continue;
+        list_for_each_entry(ext, &mem_extents, hook) {
+                struct bm_block *bb;
+                unsigned long pfn = ext->start;
+                unsigned long pages = ext->end - ext->start;
 
-                zone_bm->start_pfn = zone->zone_start_pfn;
-                zone_bm->end_pfn = zone->zone_start_pfn + zone->spanned_pages;
-                /* Allocate the list of bitmap block objects */
-                nr = DIV_ROUND_UP(zone->spanned_pages, BM_BITS_PER_BLOCK);
-                bb = create_bm_block_list(nr, &ca);
-                zone_bm->bm_blocks = bb;
-                zone_bm->cur_block = bb;
-                if (!bb)
-                        goto Free;
+                bb = list_entry(bm->blocks.prev, struct bm_block, hook);
 
-                nr = zone->spanned_pages;
-                pfn = zone->zone_start_pfn;
-                /* Initialize the bitmap block objects */
-                while (bb) {
-                        unsigned long *ptr;
+                error = create_bm_block_list(pages, bm->blocks.prev, &ca);
+                if (error)
+                        goto Error;
 
-                        ptr = get_image_page(gfp_mask, safe_needed);
-                        bb->data = ptr;
-                        if (!ptr)
-                                goto Free;
+                list_for_each_entry_continue(bb, &bm->blocks, hook) {
+                        bb->data = get_image_page(gfp_mask, safe_needed);
+                        if (!bb->data) {
+                                error = -ENOMEM;
+                                goto Error;
+                        }
 
                         bb->start_pfn = pfn;
-                        if (nr >= BM_BITS_PER_BLOCK) {
+                        if (pages >= BM_BITS_PER_BLOCK) {
                                 pfn += BM_BITS_PER_BLOCK;
-                                nr -= BM_BITS_PER_BLOCK;
+                                pages -= BM_BITS_PER_BLOCK;
                         } else {
                                 /* This is executed only once in the loop */
-                                pfn += nr;
+                                pfn += pages;
                         }
                         bb->end_pfn = pfn;
-                        bb = bb->next;
                 }
-                zone_bm = zone_bm->next;
         }
+
         bm->p_list = ca.chain;
         memory_bm_position_reset(bm);
-        return 0;
+ Exit:
+        free_mem_extents(&mem_extents);
+        return error;
 
- Free:
+ Error:
         bm->p_list = ca.chain;
         memory_bm_free(bm, PG_UNSAFE_CLEAR);
-        return -ENOMEM;
+        goto Exit;
 }
 
 /**
   *     memory_bm_free - free memory occupied by the memory bitmap @bm
   */
-
 static void memory_bm_free(struct memory_bitmap *bm, int clear_nosave_free)
 {
-        struct zone_bitmap *zone_bm;
+        struct bm_block *bb;
 
-        /* Free the list of bit blocks for each zone_bitmap object */
-        zone_bm = bm->zone_bm_list;
-        while (zone_bm) {
-                struct bm_block *bb;
+        list_for_each_entry(bb, &bm->blocks, hook)
+                if (bb->data)
+                        free_image_page(bb->data, clear_nosave_free);
 
-                bb = zone_bm->bm_blocks;
-                while (bb) {
-                        if (bb->data)
-                                free_image_page(bb->data, clear_nosave_free);
-                        bb = bb->next;
-                }
-                zone_bm = zone_bm->next;
-        }
         free_list_of_pages(bm->p_list, clear_nosave_free);
-        bm->zone_bm_list = NULL;
+
+        INIT_LIST_HEAD(&bm->blocks);
 }
 
 /**
@@ -437,38 +452,33 @@ static void memory_bm_free(struct memory_bitmap *bm, int clear_nosave_free)
  *      to given pfn.  The cur_zone_bm member of @bm and the cur_block member
  *      of @bm->cur_zone_bm are updated.
  */
-
 static int memory_bm_find_bit(struct memory_bitmap *bm, unsigned long pfn,
                                 void **addr, unsigned int *bit_nr)
 {
-        struct zone_bitmap *zone_bm;
         struct bm_block *bb;
 
-        /* Check if the pfn is from the current zone */
-        zone_bm = bm->cur.zone_bm;
-        if (pfn < zone_bm->start_pfn || pfn >= zone_bm->end_pfn) {
-                zone_bm = bm->zone_bm_list;
-                /* We don't assume that the zones are sorted by pfns */
-                while (pfn < zone_bm->start_pfn || pfn >= zone_bm->end_pfn) {
-                        zone_bm = zone_bm->next;
-
-                        if (!zone_bm)
-                                return -EFAULT;
-                }
-                bm->cur.zone_bm = zone_bm;
-        }
-        /* Check if the pfn corresponds to the current bitmap block */
-        bb = zone_bm->cur_block;
+        /*
+         * Check if the pfn corresponds to the current bitmap block and find
+         * the block where it fits if this is not the case.
+         */
+        bb = bm->cur.block;
         if (pfn < bb->start_pfn)
-                bb = zone_bm->bm_blocks;
+                list_for_each_entry_continue_reverse(bb, &bm->blocks, hook)
+                        if (pfn >= bb->start_pfn)
+                                break;
 
-        while (pfn >= bb->end_pfn) {
-                bb = bb->next;
+        if (pfn >= bb->end_pfn)
+                list_for_each_entry_continue(bb, &bm->blocks, hook)
+                        if (pfn >= bb->start_pfn && pfn < bb->end_pfn)
+                                break;
 
-                BUG_ON(!bb);
-        }
-        zone_bm->cur_block = bb;
+        if (&bb->hook == &bm->blocks)
+                return -EFAULT;
+
+        /* The block has been found */
+        bm->cur.block = bb;
         pfn -= bb->start_pfn;
+        bm->cur.bit = pfn + 1;
         *bit_nr = pfn;
         *addr = bb->data;
         return 0;
@@ -519,6 +529,14 @@ static int memory_bm_test_bit(struct memory_bitmap *bm, unsigned long pfn)
         return test_bit(bit, addr);
 }
 
+static bool memory_bm_pfn_present(struct memory_bitmap *bm, unsigned long pfn)
+{
+        void *addr;
+        unsigned int bit;
+
+        return !memory_bm_find_bit(bm, pfn, &addr, &bit);
+}
+
 /**
  *      memory_bm_next_pfn - find the pfn that corresponds to the next set bit
  *      in the bitmap @bm.  If the pfn cannot be found, BM_END_OF_MAP is
@@ -530,29 +548,21 @@ static int memory_bm_test_bit(struct memory_bitmap *bm, unsigned long pfn)
 
 static unsigned long memory_bm_next_pfn(struct memory_bitmap *bm)
 {
-        struct zone_bitmap *zone_bm;
         struct bm_block *bb;
         int bit;
 
+        bb = bm->cur.block;
         do {
-                bb = bm->cur.block;
-                do {
-                        bit = bm->cur.bit;
-                        bit = find_next_bit(bb->data, bm_block_bits(bb), bit);
-                        if (bit < bm_block_bits(bb))
-                                goto Return_pfn;
-
-                        bb = bb->next;
-                        bm->cur.block = bb;
-                        bm->cur.bit = 0;
-                } while (bb);
-                zone_bm = bm->cur.zone_bm->next;
-                if (zone_bm) {
-                        bm->cur.zone_bm = zone_bm;
-                        bm->cur.block = zone_bm->bm_blocks;
-                        bm->cur.bit = 0;
-                }
-        } while (zone_bm);
+                bit = bm->cur.bit;
+                bit = find_next_bit(bb->data, bm_block_bits(bb), bit);
+                if (bit < bm_block_bits(bb))
+                        goto Return_pfn;
+
+                bb = list_entry(bb->hook.next, struct bm_block, hook);
+                bm->cur.block = bb;
+                bm->cur.bit = 0;
+        } while (&bb->hook != &bm->blocks);
+
         memory_bm_position_reset(bm);
         return BM_END_OF_MAP;
 
@@ -808,8 +818,7 @@ static unsigned int count_free_highmem_pages(void)
  *      We should save the page if it isn't Nosave or NosaveFree, or Reserved,
  *      and it isn't a part of a free chunk of pages.
  */
-
-static struct page *saveable_highmem_page(unsigned long pfn)
+static struct page *saveable_highmem_page(struct zone *zone, unsigned long pfn)
 {
         struct page *page;
 
@@ -817,6 +826,8 @@ static struct page *saveable_highmem_page(unsigned long pfn)
                 return NULL;
 
         page = pfn_to_page(pfn);
+        if (page_zone(page) != zone)
+                return NULL;
 
         BUG_ON(!PageHighMem(page));
 
@@ -846,13 +857,16 @@ unsigned int count_highmem_pages(void)
                 mark_free_pages(zone);
                 max_zone_pfn = zone->zone_start_pfn + zone->spanned_pages;
                 for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++)
-                        if (saveable_highmem_page(pfn))
+                        if (saveable_highmem_page(zone, pfn))
                                 n++;
         }
         return n;
 }
 #else
-static inline void *saveable_highmem_page(unsigned long pfn) { return NULL; }
+static inline void *saveable_highmem_page(struct zone *z, unsigned long p)
+{
+        return NULL;
+}
 #endif /* CONFIG_HIGHMEM */
 
 /**
@@ -863,8 +877,7 @@ static inline void *saveable_highmem_page(unsigned long pfn) { return NULL; }
  *      of pages statically defined as 'unsaveable', and it isn't a part of
  *      a free chunk of pages.
  */
-
-static struct page *saveable_page(unsigned long pfn)
+static struct page *saveable_page(struct zone *zone, unsigned long pfn)
 {
         struct page *page;
 
@@ -872,6 +885,8 @@ static struct page *saveable_page(unsigned long pfn)
                 return NULL;
 
         page = pfn_to_page(pfn);
+        if (page_zone(page) != zone)
+                return NULL;
 
         BUG_ON(PageHighMem(page));
 
@@ -903,7 +918,7 @@ unsigned int count_data_pages(void)
                 mark_free_pages(zone);
                 max_zone_pfn = zone->zone_start_pfn + zone->spanned_pages;
                 for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++)
-                        if(saveable_page(pfn))
+                        if (saveable_page(zone, pfn))
                                 n++;
         }
         return n;
@@ -944,7 +959,7 @@ static inline struct page *
 page_is_saveable(struct zone *zone, unsigned long pfn)
 {
         return is_highmem(zone) ?
-                        saveable_highmem_page(pfn) : saveable_page(pfn);
+                saveable_highmem_page(zone, pfn) : saveable_page(zone, pfn);
 }
 
 static void copy_data_page(unsigned long dst_pfn, unsigned long src_pfn)
@@ -966,7 +981,7 @@ static void copy_data_page(unsigned long dst_pfn, unsigned long src_pfn)
                          * data modified by kmap_atomic()
                          */
                         safe_copy_page(buffer, s_page);
-                        dst = kmap_atomic(pfn_to_page(dst_pfn), KM_USER0);
+                        dst = kmap_atomic(d_page, KM_USER0);
                         memcpy(dst, buffer, PAGE_SIZE);
                         kunmap_atomic(dst, KM_USER0);
                 } else {
@@ -975,7 +990,7 @@ static void copy_data_page(unsigned long dst_pfn, unsigned long src_pfn)
         }
 }
 #else
-#define page_is_saveable(zone, pfn)     saveable_page(pfn)
+#define page_is_saveable(zone, pfn)     saveable_page(zone, pfn)
 
 static inline void copy_data_page(unsigned long dst_pfn, unsigned long src_pfn)
 {
@@ -1459,9 +1474,7 @@ load_header(struct swsusp_info *info)
  *      unpack_orig_pfns - for each element of @buf[] (1 page at a time) set
  *      the corresponding bit in the memory bitmap @bm
  */
-
-static inline void
-unpack_orig_pfns(unsigned long *buf, struct memory_bitmap *bm)
+static int unpack_orig_pfns(unsigned long *buf, struct memory_bitmap *bm)
 {
         int j;
 
@@ -1469,8 +1482,13 @@ unpack_orig_pfns(unsigned long *buf, struct memory_bitmap *bm)
                 if (unlikely(buf[j] == BM_END_OF_MAP))
                         break;
 
-                memory_bm_set_bit(bm, buf[j]);
+                if (memory_bm_pfn_present(bm, buf[j]))
+                        memory_bm_set_bit(bm, buf[j]);
+                else
+                        return -EFAULT;
         }
+
+        return 0;
 }
 
 /* List of "safe" pages that may be used to store data loaded from the suspend
@@ -1608,7 +1626,7 @@ get_highmem_page_buffer(struct page *page, struct chain_allocator *ca)
         pbe = chain_alloc(ca, sizeof(struct highmem_pbe));
         if (!pbe) {
                 swsusp_free();
-                return NULL;
+                return ERR_PTR(-ENOMEM);
         }
         pbe->orig_page = page;
         if (safe_highmem_pages > 0) {
@@ -1677,7 +1695,7 @@ prepare_highmem_image(struct memory_bitmap *bm, unsigned int *nr_highmem_p)
 static inline void *
 get_highmem_page_buffer(struct page *page, struct chain_allocator *ca)
 {
-        return NULL;
+        return ERR_PTR(-EINVAL);
 }
 
 static inline void copy_last_highmem_page(void) {}
@@ -1788,8 +1806,13 @@ prepare_image(struct memory_bitmap *new_bm, struct memory_bitmap *bm)
 static void *get_buffer(struct memory_bitmap *bm, struct chain_allocator *ca)
 {
         struct pbe *pbe;
-        struct page *page = pfn_to_page(memory_bm_next_pfn(bm));
+        struct page *page;
+        unsigned long pfn = memory_bm_next_pfn(bm);
 
+        if (pfn == BM_END_OF_MAP)
+                return ERR_PTR(-EFAULT);
+
+        page = pfn_to_page(pfn);
         if (PageHighMem(page))
                 return get_highmem_page_buffer(page, ca);
 
@@ -1805,7 +1828,7 @@ static void *get_buffer(struct memory_bitmap *bm, struct chain_allocator *ca)
         pbe = chain_alloc(ca, sizeof(struct pbe));
         if (!pbe) {
                 swsusp_free();
-                return NULL;
+                return ERR_PTR(-ENOMEM);
         }
         pbe->orig_address = page_address(page);
         pbe->address = safe_pages_list;
@@ -1868,7 +1891,10 @@ int snapshot_write_next(struct snapshot_handle *handle, size_t count)
                                 return error;
 
                 } else if (handle->prev <= nr_meta_pages) {
-                        unpack_orig_pfns(buffer, &copy_bm);
+                        error = unpack_orig_pfns(buffer, &copy_bm);
+                        if (error)
+                                return error;
+
                         if (handle->prev == nr_meta_pages) {
                                 error = prepare_image(&orig_bm, &copy_bm);
                                 if (error)
@@ -1879,12 +1905,14 @@ int snapshot_write_next(struct snapshot_handle *handle, size_t count)
                                 restore_pblist = NULL;
                                 handle->buffer = get_buffer(&orig_bm, &ca);
                                 handle->sync_read = 0;
-                                if (!handle->buffer)
-                                        return -ENOMEM;
+                                if (IS_ERR(handle->buffer))
+                                        return PTR_ERR(handle->buffer);
                         }
                 } else {
                         copy_last_highmem_page();
                         handle->buffer = get_buffer(&orig_bm, &ca);
+                        if (IS_ERR(handle->buffer))
+                                return PTR_ERR(handle->buffer);
                         if (handle->buffer != buffer)
                                 handle->sync_read = 0;
                 }
diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
index 023ff2a31d89..a92c91451559 100644
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -262,3 +262,125 @@ int swsusp_shrink_memory(void)
 
         return 0;
 }
+
+/*
+ * Platforms, like ACPI, may want us to save some memory used by them during
+ * hibernation and to restore the contents of this memory during the subsequent
+ * resume.  The code below implements a mechanism allowing us to do that.
+ */
+
+struct nvs_page {
+        unsigned long phys_start;
+        unsigned int size;
+        void *kaddr;
+        void *data;
+        struct list_head node;
+};
+
+static LIST_HEAD(nvs_list);
+
+/**
+ *      hibernate_nvs_register - register platform NVS memory region to save
+ *      @start - physical address of the region
+ *      @size - size of the region
+ *
+ *      The NVS region need not be page-aligned (both ends) and we arrange
+ *      things so that the data from page-aligned addresses in this region will
+ *      be copied into separate RAM pages.
+ */
+int hibernate_nvs_register(unsigned long start, unsigned long size)
+{
+        struct nvs_page *entry, *next;
+
+        while (size > 0) {
+                unsigned int nr_bytes;
+
+                entry = kzalloc(sizeof(struct nvs_page), GFP_KERNEL);
+                if (!entry)
+                        goto Error;
+
+                list_add_tail(&entry->node, &nvs_list);
+                entry->phys_start = start;
+                nr_bytes = PAGE_SIZE - (start & ~PAGE_MASK);
+                entry->size = (size < nr_bytes) ? size : nr_bytes;
+
+                start += entry->size;
+                size -= entry->size;
+        }
+        return 0;
+
+ Error:
+        list_for_each_entry_safe(entry, next, &nvs_list, node) {
+                list_del(&entry->node);
+                kfree(entry);
+        }
+        return -ENOMEM;
+}
+
+/**
+ *      hibernate_nvs_free - free data pages allocated for saving NVS regions
+ */
+void hibernate_nvs_free(void)
+{
+        struct nvs_page *entry;
+
+        list_for_each_entry(entry, &nvs_list, node)
+                if (entry->data) {
+                        free_page((unsigned long)entry->data);
+                        entry->data = NULL;
+                        if (entry->kaddr) {
+                                iounmap(entry->kaddr);
+                                entry->kaddr = NULL;
+                        }
+                }
+}
+
+/**
+ *      hibernate_nvs_alloc - allocate memory necessary for saving NVS regions
+ */
+int hibernate_nvs_alloc(void)
+{
+        struct nvs_page *entry;
+
+        list_for_each_entry(entry, &nvs_list, node) {
+                entry->data = (void *)__get_free_page(GFP_KERNEL);
+                if (!entry->data) {
+                        hibernate_nvs_free();
+                        return -ENOMEM;
+                }
+        }
+        return 0;
+}
+
+/**
+ *      hibernate_nvs_save - save NVS memory regions
+ */
+void hibernate_nvs_save(void)
+{
+        struct nvs_page *entry;
+
+        printk(KERN_INFO "PM: Saving platform NVS memory\n");
+
+        list_for_each_entry(entry, &nvs_list, node)
+                if (entry->data) {
+                        entry->kaddr = ioremap(entry->phys_start, entry->size);
+                        memcpy(entry->data, entry->kaddr, entry->size);
+                }
+}
+
+/**
+ *      hibernate_nvs_restore - restore NVS memory regions
+ *
+ *      This function is going to be called with interrupts disabled, so it
+ *      cannot iounmap the virtual addresses used to access the NVS region.
+ */
+void hibernate_nvs_restore(void)
+{
+        struct nvs_page *entry;
+
+        printk(KERN_INFO "PM: Restoring platform NVS memory\n");
+
+        list_for_each_entry(entry, &nvs_list, node)
+                if (entry->data)
+                        memcpy(entry->kaddr, entry->data, entry->size);
+}
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index a9d9760dc7b6..8b0daf0662ef 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -168,7 +168,13 @@ rb_event_length(struct ring_buffer_event *event)
  */
 unsigned ring_buffer_event_length(struct ring_buffer_event *event)
 {
-        return rb_event_length(event);
+        unsigned length = rb_event_length(event);
+        if (event->type != RINGBUF_TYPE_DATA)
+                return length;
+        length -= RB_EVNT_HDR_SIZE;
+        if (length > RB_MAX_SMALL_DATA + sizeof(event->array[0]))
+                length -= sizeof(event->array[0]);
+        return length;
 }
 EXPORT_SYMBOL_GPL(ring_buffer_event_length);
 
diff --git a/net/core/dev.c b/net/core/dev.c
index bab8bcedd62e..5f736f1ceeae 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -170,25 +170,6 @@ static DEFINE_SPINLOCK(ptype_lock);
 static struct list_head ptype_base[PTYPE_HASH_SIZE] __read_mostly;
 static struct list_head ptype_all __read_mostly;        /* Taps */
 
-#ifdef CONFIG_NET_DMA
-struct net_dma {
-        struct dma_client client;
-        spinlock_t lock;
-        cpumask_t channel_mask;
-        struct dma_chan **channels;
-};
-
-static enum dma_state_client
-netdev_dma_event(struct dma_client *client, struct dma_chan *chan,
-        enum dma_state state);
-
-static struct net_dma net_dma = {
-        .client = {
-                .event_callback = netdev_dma_event,
-        },
-};
-#endif
-
 /*
  * The @dev_base_head list is protected by @dev_base_lock and the rtnl
  * semaphore.
@@ -2754,14 +2735,7 @@ out:
          * There may not be any more sk_buffs coming right now, so push
          * any pending DMA copies to hardware
          */
-        if (!cpus_empty(net_dma.channel_mask)) {
-                int chan_idx;
-                for_each_cpu_mask_nr(chan_idx, net_dma.channel_mask) {
-                        struct dma_chan *chan = net_dma.channels[chan_idx];
-                        if (chan)
-                                dma_async_memcpy_issue_pending(chan);
-                }
-        }
+        dma_issue_pending_all();
 #endif
 
         return;
@@ -4952,122 +4926,6 @@ static int dev_cpu_callback(struct notifier_block *nfb,
         return NOTIFY_OK;
 }
 
-#ifdef CONFIG_NET_DMA
-/**
- * net_dma_rebalance - try to maintain one DMA channel per CPU
- * @net_dma: DMA client and associated data (lock, channels, channel_mask)
- *
- * This is called when the number of channels allocated to the net_dma client
- * changes.  The net_dma client tries to have one DMA channel per CPU.
- */
-
-static void net_dma_rebalance(struct net_dma *net_dma)
-{
-        unsigned int cpu, i, n, chan_idx;
-        struct dma_chan *chan;
-
-        if (cpus_empty(net_dma->channel_mask)) {
-                for_each_online_cpu(cpu)
-                        rcu_assign_pointer(per_cpu(softnet_data, cpu).net_dma, NULL);
-                return;
-        }
-
-        i = 0;
-        cpu = first_cpu(cpu_online_map);
-
-        for_each_cpu_mask_nr(chan_idx, net_dma->channel_mask) {
-                chan = net_dma->channels[chan_idx];
-
-                n = ((num_online_cpus() / cpus_weight(net_dma->channel_mask))
-                   + (i < (num_online_cpus() %
-                        cpus_weight(net_dma->channel_mask)) ? 1 : 0));
-
-                while(n) {
-                        per_cpu(softnet_data, cpu).net_dma = chan;
-                        cpu = next_cpu(cpu, cpu_online_map);
-                        n--;
-                }
-                i++;
-        }
-}
-
-/**
- * netdev_dma_event - event callback for the net_dma_client
- * @client: should always be net_dma_client
- * @chan: DMA channel for the event
- * @state: DMA state to be handled
- */
-static enum dma_state_client
-netdev_dma_event(struct dma_client *client, struct dma_chan *chan,
-        enum dma_state state)
-{
-        int i, found = 0, pos = -1;
-        struct net_dma *net_dma =
-                container_of(client, struct net_dma, client);
-        enum dma_state_client ack = DMA_DUP; /* default: take no action */
-
-        spin_lock(&net_dma->lock);
-        switch (state) {
-        case DMA_RESOURCE_AVAILABLE:
-                for (i = 0; i < nr_cpu_ids; i++)
-                        if (net_dma->channels[i] == chan) {
-                                found = 1;
-                                break;
-                        } else if (net_dma->channels[i] == NULL && pos < 0)
-                                pos = i;
-
-                if (!found && pos >= 0) {
-                        ack = DMA_ACK;
-                        net_dma->channels[pos] = chan;
-                        cpu_set(pos, net_dma->channel_mask);
-                        net_dma_rebalance(net_dma);
-                }
-                break;
-        case DMA_RESOURCE_REMOVED:
-                for (i = 0; i < nr_cpu_ids; i++)
-                        if (net_dma->channels[i] == chan) {
-                                found = 1;
-                                pos = i;
-                                break;
-                        }
-
-                if (found) {
-                        ack = DMA_ACK;
-                        cpu_clear(pos, net_dma->channel_mask);
-                        net_dma->channels[i] = NULL;
-                        net_dma_rebalance(net_dma);
-                }
-                break;
-        default:
-                break;
-        }
-        spin_unlock(&net_dma->lock);
-
-        return ack;
-}
-
-/**
- * netdev_dma_register - register the networking subsystem as a DMA client
- */
-static int __init netdev_dma_register(void)
-{
-        net_dma.channels = kzalloc(nr_cpu_ids * sizeof(struct net_dma),
-                                                                GFP_KERNEL);
-        if (unlikely(!net_dma.channels)) {
-                printk(KERN_NOTICE
-                                "netdev_dma: no memory for net_dma.channels\n");
-                return -ENOMEM;
-        }
-        spin_lock_init(&net_dma.lock);
-        dma_cap_set(DMA_MEMCPY, net_dma.client.cap_mask);
-        dma_async_client_register(&net_dma.client);
-        dma_async_client_chan_request(&net_dma.client);
-        return 0;
-}
-
-#else
-static int __init netdev_dma_register(void) { return -ENODEV; }
-#endif /* CONFIG_NET_DMA */
 
 /**
  *      netdev_increment_features - increment feature set by one
@@ -5287,14 +5145,15 @@ static int __init net_dev_init(void)
         if (register_pernet_device(&default_device_ops))
                 goto out;
 
-        netdev_dma_register();
-
         open_softirq(NET_TX_SOFTIRQ, net_tx_action);
         open_softirq(NET_RX_SOFTIRQ, net_rx_action);
 
         hotcpu_notifier(dev_cpu_callback, 0);
         dst_init();
         dev_mcast_init();
+        #ifdef CONFIG_NET_DMA
+        dmaengine_get();
+        #endif
         rc = 0;
 out:
         return rc;
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index bd6ff907d9e4..ce572f9dff02 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1313,7 +1313,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
                 if ((available < target) &&
                     (len > sysctl_tcp_dma_copybreak) && !(flags & MSG_PEEK) &&
                     !sysctl_tcp_low_latency &&
-                    __get_cpu_var(softnet_data).net_dma) {
+                    dma_find_channel(DMA_MEMCPY)) {
                         preempt_enable_no_resched();
                         tp->ucopy.pinned_list =
                                         dma_pin_iovec_pages(msg->msg_iov, len);
@@ -1523,7 +1523,7 @@ do_prequeue:
                 if (!(flags & MSG_TRUNC)) {
 #ifdef CONFIG_NET_DMA
                         if (!tp->ucopy.dma_chan && tp->ucopy.pinned_list)
-                                tp->ucopy.dma_chan = get_softnet_dma();
+                                tp->ucopy.dma_chan = dma_find_channel(DMA_MEMCPY);
 
                         if (tp->ucopy.dma_chan) {
                                 tp->ucopy.dma_cookie = dma_skb_copy_datagram_iovec(
@@ -1628,7 +1628,6 @@ skip_copy:
 
                 /* Safe to free early-copied skbs now */
                 __skb_queue_purge(&sk->sk_async_wait_queue);
-                dma_chan_put(tp->ucopy.dma_chan);
                 tp->ucopy.dma_chan = NULL;
         }
         if (tp->ucopy.pinned_list) {
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 99b7ecbe8893..a6961d75c7ea 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -5005,7 +5005,7 @@ static int tcp_dma_try_early_copy(struct sock *sk, struct sk_buff *skb,
                 return 0;
 
         if (!tp->ucopy.dma_chan && tp->ucopy.pinned_list)
-                tp->ucopy.dma_chan = get_softnet_dma();
+                tp->ucopy.dma_chan = dma_find_channel(DMA_MEMCPY);
 
         if (tp->ucopy.dma_chan && skb_csum_unnecessary(skb)) {
 
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 9d839fa9331e..19d7b429a262 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1594,7 +1594,7 @@ process:
 #ifdef CONFIG_NET_DMA
                 struct tcp_sock *tp = tcp_sk(sk);
                 if (!tp->ucopy.dma_chan && tp->ucopy.pinned_list)
-                        tp->ucopy.dma_chan = get_softnet_dma();
+                        tp->ucopy.dma_chan = dma_find_channel(DMA_MEMCPY);
                 if (tp->ucopy.dma_chan)
                         ret = tcp_v4_do_rcv(sk, skb);
                 else
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 1297306d729c..e5b85d45bee8 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1675,7 +1675,7 @@ process:
 #ifdef CONFIG_NET_DMA
                 struct tcp_sock *tp = tcp_sk(sk);
                 if (!tp->ucopy.dma_chan && tp->ucopy.pinned_list)
-                        tp->ucopy.dma_chan = get_softnet_dma();
+                        tp->ucopy.dma_chan = dma_find_channel(DMA_MEMCPY);
                 if (tp->ucopy.dma_chan)
                         ret = tcp_v6_do_rcv(sk, skb);
                 else