116 files changed, 4695 insertions, 1935 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 7164d4e4136b..533199bdb92a 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -217,20 +217,47 @@ and is between 256 and 4096 characters. It is defined in the file
        acpi.debug_level=       [HW,ACPI]
                        Format: <int>
                        Each bit of the <int> indicates an ACPI debug level,
-                        1: enable, 0: disable. It is useful for boot time
+                        which corresponds to the level in an ACPI_DEBUG_PRINT
-                        debugging. After system has booted up, it can be set
+                        statement.  After system has booted up, this mask
-                        via /sys/module/acpi/parameters/debug_level.
+                        can be set via /sys/module/acpi/parameters/debug_level.
-                        CONFIG_ACPI_DEBUG must be enabled for this to produce any output.
-                        Available bits (add the numbers together) to enable different
+                        CONFIG_ACPI_DEBUG must be enabled for this to produce
-                        debug output levels of the ACPI subsystem:
+                        any output.  The number can be in decimal or prefixed
-                        0x01 error 0x02 warn 0x04 init 0x08 debug object
+                        with 0x in hex.  Some of these options produce so much
-                        0x10 info 0x20 init names 0x40 parse 0x80 load
+                        output that the system is unusable.
-                        0x100 dispatch 0x200 execute 0x400 names 0x800 operation region
-                        0x1000 bfield 0x2000 tables 0x4000 values 0x8000 objects
+                        The following global components are defined by the
-                        0x10000 resources 0x20000 user requests 0x40000 package.
+                        ACPI CA:
-                        The number can be in decimal or prefixed with 0x in hex.
+                               0x01 error
-                        Warning: Many of these options can produce a lot of
+                               0x02 warn
-                        output and make your system unusable. Be very careful.
+                               0x04 init
+                               0x08 debug object
+                               0x10 info
+                               0x20 init names
+                               0x40 parse
+                               0x80 load
+                              0x100 dispatch
+                              0x200 execute
+                              0x400 names
+                              0x800 operation region
+                             0x1000 bfield
+                             0x2000 tables
+                             0x4000 values
+                             0x8000 objects
+                            0x10000 resources
+                            0x20000 user requests
+                            0x40000 package
+                        The number can be in decimal or prefixed with 0x in hex.
+                        Warning: Many of these options can produce a lot of
+                        output and make your system unusable. Be very careful.
+        acpi.power_nocheck=     [HW,ACPI]
+                        Format: 1/0 enable/disable the check of power state.
+                        On some bogus BIOS the _PSC object/_STA object of
+                        power resource can't return the correct device power
+                        state. In such case it is unneccessary to check its
+                        power state again in power transition.
+                        1 : disable the power state check
        acpi_pm_good    [X86-32,X86-64]
                        Override the pmtimer bug detection: force the kernel
@@ -2150,7 +2177,7 @@ and is between 256 and 4096 characters. It is defined in the file
        thermal.crt=    [HW,ACPI]
                        -1: disable all critical trip points in all thermal zones
-                        <degrees C>: lower all critical trip points
+                        <degrees C>: override all critical trip points
        thermal.nocrt=  [HW,ACPI]
                        Set to disable actions on ACPI thermal zone
diff --git a/Documentation/laptops/acer-wmi.txt b/Documentation/laptops/acer-wmi.txt
index 69b5dd4e5a59..2b3a6b5260bf 100644
--- a/Documentation/laptops/acer-wmi.txt
+++ b/Documentation/laptops/acer-wmi.txt
@@ -1,7 +1,7 @@
 Acer Laptop WMI Extras Driver
 http://code.google.com/p/aceracpi
-Version 0.1
+Version 0.2
-9th February 2008
+18th August 2008
 Copyright 2007-2008 Carlos Corbacho <carlos@strangeworlds.co.uk>
@@ -87,17 +87,7 @@ acer-wmi come with built-in wireless. However, should you feel so inclined to
 ever wish to remove the card, or swap it out at some point, please get in touch
 with me, as we may well be able to gain some data on wireless card detection.
-To read the status of the wireless radio (0=off, 1=on):
+The wireless radio is exposed through rfkill.
-cat /sys/devices/platform/acer-wmi/wireless
-To enable the wireless radio:
-echo 1 > /sys/devices/platform/acer-wmi/wireless
-To disable the wireless radio:
-echo 0 > /sys/devices/platform/acer-wmi/wireless
-To set the state of the wireless radio when loading acer-wmi, pass:
-wireless=X (where X is 0 or 1)
 Bluetooth
 *********
@@ -117,17 +107,7 @@ For the adventurously minded - if you want to buy an internal bluetooth
 module off the internet that is compatible with your laptop and fit it, then
 it will work just fine with acer-wmi.
-To read the status of the bluetooth module (0=off, 1=on):
+Bluetooth is exposed through rfkill.
-cat /sys/devices/platform/acer-wmi/wireless
-To enable the bluetooth module:
-echo 1 > /sys/devices/platform/acer-wmi/bluetooth
-To disable the bluetooth module:
-echo 0 > /sys/devices/platform/acer-wmi/bluetooth
-To set the state of the bluetooth module when loading acer-wmi, pass:
-bluetooth=X (where X is 0 or 1)
 3G
 **
diff --git a/MAINTAINERS b/MAINTAINERS
index 8dae4555f10e..5edb541c2fad 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1415,8 +1415,8 @@ M:	rdunlap@xenotime.net
 S:      Maintained
 DOCKING STATION DRIVER
-P:      Kristen Carlson Accardi
+P:      Shaohua Li
-M:      kristen.c.accardi@intel.com
+M:      shaohua.li@intel.com
 L:      linux-acpi@vger.kernel.org
 S:      Supported
@@ -2078,6 +2078,12 @@ L:	linux-ide@vger.kernel.org
 L:      linux-scsi@vger.kernel.org
 S:      Orphan
+IDLE-I7300
+P:      Andy Henroid
+M:      andrew.d.henroid@intel.com
+L:      linux-pm@lists.linux-foundation.org
+S:      Supported
 IEEE 1394 SUBSYSTEM (drivers/ieee1394)
 P:      Ben Collins
 M:      ben.collins@ubuntu.com
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index ed92864d1325..540a78242034 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -123,6 +123,9 @@ config GENERIC_TIME_VSYSCALL
 config ARCH_HAS_CPU_RELAX
        def_bool y
+config ARCH_HAS_DEFAULT_IDLE
+        def_bool y
 config ARCH_HAS_CACHE_LINE_SIZE
        def_bool y
@@ -1536,6 +1539,8 @@ source "arch/x86/kernel/cpu/cpufreq/Kconfig"
 source "drivers/cpuidle/Kconfig"
+source "drivers/idle/Kconfig"
 endmenu
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index c102af85df9c..0c2742f8c4da 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -97,7 +97,6 @@ static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
 #warning ACPI uses CMPXCHG, i486 and later hardware
 #endif
-static int acpi_mcfg_64bit_base_addr __initdata = FALSE;
 /* --------------------------------------------------------------------------
                              Boot-time Configuration
@@ -156,6 +155,9 @@ char *__init __acpi_map_table(unsigned long phys, unsigned long size)
 }
 #ifdef CONFIG_PCI_MMCONFIG
+static int acpi_mcfg_64bit_base_addr __initdata = FALSE;
 /* The physical address of the MMCONFIG aperture.  Set from ACPI tables. */
 struct acpi_mcfg_allocation *pci_mmcfg_config;
 int pci_mmcfg_config_num;
diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
index 426e5d91b63a..55d10cbe65b1 100644
--- a/arch/x86/kernel/acpi/sleep.c
+++ b/arch/x86/kernel/acpi/sleep.c
@@ -21,7 +21,7 @@ unsigned long acpi_realmode_flags;
 static unsigned long acpi_realmode;
 #if defined(CONFIG_SMP) && defined(CONFIG_64BIT)
-static char temp_stack[10240];
+static char temp_stack[4096];
 #endif
 /**
@@ -97,7 +97,7 @@ int acpi_save_state_mem(void)
 #else /* CONFIG_64BIT */
        header->trampoline_segment = setup_trampoline() >> 4;
 #ifdef CONFIG_SMP
-        stack_start.sp = temp_stack + 4096;
+        stack_start.sp = temp_stack + sizeof(temp_stack);
 #endif
        initial_code = (unsigned long)wakeup_long64;
        saved_magic = 0x123456789abcdef0;
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index 84bb395038d8..4e0c6abd7ca4 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -45,7 +45,6 @@
 #endif
 #define PFX "powernow-k8: "
-#define BFX PFX "BIOS error: "
 #define VERSION "version 2.20.00"
 #include "powernow-k8.h"
@@ -536,35 +535,40 @@ static int check_pst_table(struct powernow_k8_data *data, struct pst_s *pst, u8
        for (j = 0; j < data->numps; j++) {
                if (pst[j].vid > LEAST_VID) {
-                        printk(KERN_ERR PFX "vid %d invalid : 0x%x\n", j, pst[j].vid);
+                        printk(KERN_ERR FW_BUG PFX "vid %d invalid : 0x%x\n",
+                               j, pst[j].vid);
                        return -EINVAL;
                }
                if (pst[j].vid < data->rvo) {   /* vid + rvo >= 0 */
-                        printk(KERN_ERR BFX "0 vid exceeded with pstate %d\n", j);
+                        printk(KERN_ERR FW_BUG PFX "0 vid exceeded with pstate"
+                               " %d\n", j);
                        return -ENODEV;
                }
                if (pst[j].vid < maxvid + data->rvo) {  /* vid + rvo >= maxvid */
-                        printk(KERN_ERR BFX "maxvid exceeded with pstate %d\n", j);
+                        printk(KERN_ERR FW_BUG PFX "maxvid exceeded with pstate"
+                               " %d\n", j);
                        return -ENODEV;
                }
                if (pst[j].fid > MAX_FID) {
-                        printk(KERN_ERR BFX "maxfid exceeded with pstate %d\n", j);
+                        printk(KERN_ERR FW_BUG PFX "maxfid exceeded with pstate"
+                               " %d\n", j);
                        return -ENODEV;
                }
                if (j && (pst[j].fid < HI_FID_TABLE_BOTTOM)) {
                        /* Only first fid is allowed to be in "low" range */
-                        printk(KERN_ERR BFX "two low fids - %d : 0x%x\n", j, pst[j].fid);
+                        printk(KERN_ERR FW_BUG PFX "two low fids - %d : "
+                               "0x%x\n", j, pst[j].fid);
                        return -EINVAL;
                }
                if (pst[j].fid < lastfid)
                        lastfid = pst[j].fid;
        }
        if (lastfid & 1) {
-                printk(KERN_ERR BFX "lastfid invalid\n");
+                printk(KERN_ERR FW_BUG PFX "lastfid invalid\n");
                return -EINVAL;
        }
        if (lastfid > LO_FID_TABLE_TOP)
-                printk(KERN_INFO BFX  "first fid not from lo freq table\n");
+                printk(KERN_INFO FW_BUG PFX  "first fid not from lo freq table\n");
        return 0;
 }
@@ -672,13 +676,13 @@ static int find_psb_table(struct powernow_k8_data *data)
                dprintk("table vers: 0x%x\n", psb->tableversion);
                if (psb->tableversion != PSB_VERSION_1_4) {
-                        printk(KERN_ERR BFX "PSB table is not v1.4\n");
+                        printk(KERN_ERR FW_BUG PFX "PSB table is not v1.4\n");
                        return -ENODEV;
                }
                dprintk("flags: 0x%x\n", psb->flags1);
                if (psb->flags1) {
-                        printk(KERN_ERR BFX "unknown flags\n");
+                        printk(KERN_ERR FW_BUG PFX "unknown flags\n");
                        return -ENODEV;
                }
@@ -705,7 +709,7 @@ static int find_psb_table(struct powernow_k8_data *data)
                        }
                }
                if (cpst != 1) {
-                        printk(KERN_ERR BFX "numpst must be 1\n");
+                        printk(KERN_ERR FW_BUG PFX "numpst must be 1\n");
                        return -ENODEV;
                }
@@ -1130,17 +1134,19 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
                               "ACPI Processor module before starting this "
                               "driver.\n");
 #else
-                        printk(KERN_ERR PFX "Your BIOS does not provide ACPI "
+                        printk(KERN_ERR FW_BUG PFX "Your BIOS does not provide"
-                               "_PSS objects in a way that Linux understands. "
+                               " ACPI _PSS objects in a way that Linux "
-                               "Please report this to the Linux ACPI maintainers"
+                               "understands. Please report this to the Linux "
-                               " and complain to your BIOS vendor.\n");
+                               "ACPI maintainers and complain to your BIOS "
+                               "vendor.\n");
 #endif
                        kfree(data);
                        return -ENODEV;
                }
                if (pol->cpu != 0) {
-                        printk(KERN_ERR PFX "No ACPI _PSS objects for CPU other than "
+                        printk(KERN_ERR FW_BUG PFX "No ACPI _PSS objects for "
-                               "CPU0. Complain to your BIOS vendor.\n");
+                               "CPU other than CPU0. Complain to your BIOS "
+                               "vendor.\n");
                        kfree(data);
                        return -ENODEV;
                }
@@ -1193,7 +1199,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
        /* min/max the cpu is capable of */
        if (cpufreq_frequency_table_cpuinfo(pol, data->powernow_table)) {
-                printk(KERN_ERR PFX "invalid powernow_table\n");
+                printk(KERN_ERR FW_BUG PFX "invalid powernow_table\n");
                powernow_k8_cpu_exit_acpi(data);
                kfree(data->powernow_table);
                kfree(data);
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index e12e0e4dd256..3e3d503eadcf 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -62,6 +62,13 @@ void idle_notifier_register(struct notifier_block *n)
 {
        atomic_notifier_chain_register(&idle_notifier, n);
 }
+EXPORT_SYMBOL_GPL(idle_notifier_register);
+void idle_notifier_unregister(struct notifier_block *n)
+{
+        atomic_notifier_chain_unregister(&idle_notifier, n);
+}
+EXPORT_SYMBOL_GPL(idle_notifier_unregister);
 void enter_idle(void)
 {
diff --git a/drivers/Makefile b/drivers/Makefile
index 2735bde73475..f443a8a9d46e 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -82,6 +82,7 @@ obj-$(CONFIG_EISA)		+= eisa/
 obj-y                           += lguest/
 obj-$(CONFIG_CPU_FREQ)          += cpufreq/
 obj-$(CONFIG_CPU_IDLE)          += cpuidle/
+obj-y                           += idle/
 obj-$(CONFIG_MMC)               += mmc/
 obj-$(CONFIG_MEMSTICK)          += memstick/
 obj-$(CONFIG_NEW_LEDS)          += leds/
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 735f5ea17473..cbfc58d60236 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -42,7 +42,7 @@ if ACPI
 config ACPI_SLEEP
        bool
-        depends on PM_SLEEP
+        depends on SUSPEND || HIBERNATION
        default y
 config ACPI_PROCFS
@@ -160,15 +160,8 @@ config ACPI_DOCK
        tristate "Dock"
        depends on EXPERIMENTAL
        help
-          This driver adds support for ACPI controlled docking stations
+          This driver adds support for ACPI controlled docking stations and removable
+          drive bays such as the IBM ultrabay or the Dell Module Bay.
-config ACPI_BAY
-        tristate "Removable Drive Bay (EXPERIMENTAL)"
-        depends on EXPERIMENTAL
-        depends on ACPI_DOCK
-        help
-          This driver adds support for ACPI controlled removable drive
-          bays such as the IBM ultrabay or the Dell Module Bay.
 config ACPI_PROCESSOR
        tristate "Processor"
@@ -259,7 +252,7 @@ config ACPI_ASUS
 config ACPI_TOSHIBA
        tristate "Toshiba Laptop Extras"
-        depends on X86
+        depends on X86 && INPUT
        select BACKLIGHT_CLASS_DEVICE
        ---help---
          This driver adds support for access to certain system settings
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 52a4cd4b81d0..ad4bfd558ff3 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -45,7 +45,6 @@ obj-$(CONFIG_ACPI_BATTERY)	+= battery.o
 obj-$(CONFIG_ACPI_BUTTON)       += button.o
 obj-$(CONFIG_ACPI_FAN)          += fan.o
 obj-$(CONFIG_ACPI_DOCK)         += dock.o
-obj-$(CONFIG_ACPI_BAY)          += bay.o
 obj-$(CONFIG_ACPI_VIDEO)        += video.o
 obj-y                           += pci_root.o pci_link.o pci_irq.o pci_bind.o
 obj-$(CONFIG_ACPI_PCI_SLOT)     += pci_slot.o
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 831883b7d6c9..8b6a84a43b15 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -269,7 +269,7 @@ static int acpi_ac_add(struct acpi_device *device)
        ac->device = device;
        strcpy(acpi_device_name(device), ACPI_AC_DEVICE_NAME);
        strcpy(acpi_device_class(device), ACPI_AC_CLASS);
-        acpi_driver_data(device) = ac;
+        device->driver_data = ac;
        result = acpi_ac_get_state(ac);
        if (result)
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 5f1127ad5a95..289d02260f16 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -403,7 +403,7 @@ static int acpi_memory_device_add(struct acpi_device *device)
        mem_device->device = device;
        sprintf(acpi_device_name(device), "%s", ACPI_MEMORY_DEVICE_NAME);
        sprintf(acpi_device_class(device), "%s", ACPI_MEMORY_DEVICE_CLASS);
-        acpi_driver_data(device) = mem_device;
+        device->driver_data = mem_device;
        /* Get the range from the _CRS */
        result = acpi_memory_get_device_resources(mem_device);
@@ -454,8 +454,8 @@ static int acpi_memory_device_start (struct acpi_device *device)
                /* call add_memory func */
                result = acpi_memory_enable_device(mem_device);
                if (result)
-                        ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                        printk(KERN_ERR PREFIX
-                                "Error in acpi_memory_enable_device\n"));
+                                "Error in acpi_memory_enable_device\n");
        }
        return result;
 }
diff --git a/drivers/acpi/asus_acpi.c b/drivers/acpi/asus_acpi.c
index d3d0886d637f..2377e8b917d7 100644
--- a/drivers/acpi/asus_acpi.c
+++ b/drivers/acpi/asus_acpi.c
@@ -42,7 +42,7 @@
 #define ASUS_ACPI_VERSION "0.30"
-#define PROC_ASUS       "asus"  //the directory
+#define PROC_ASUS       "asus"  /* The directory */
 #define PROC_MLED       "mled"
 #define PROC_WLED       "wled"
 #define PROC_TLED       "tled"
@@ -66,10 +66,10 @@
 /*
 * Flags for hotk status
 */
-#define MLED_ON     0x01        //mail LED
+#define MLED_ON     0x01        /* Mail LED */
-#define WLED_ON     0x02        //wireless LED
+#define WLED_ON     0x02        /* Wireless LED */
-#define TLED_ON     0x04        //touchpad LED
+#define TLED_ON     0x04        /* Touchpad LED */
-#define BT_ON       0x08        //internal Bluetooth
+#define BT_ON       0x08        /* Internal Bluetooth */
 MODULE_AUTHOR("Julien Lerouge, Karol Kozimor");
 MODULE_DESCRIPTION(ACPI_HOTK_NAME);
@@ -82,28 +82,28 @@ MODULE_PARM_DESC(asus_uid, "UID for entries in /proc/acpi/asus");
 module_param(asus_gid, uint, 0);
 MODULE_PARM_DESC(asus_gid, "GID for entries in /proc/acpi/asus");
-/* For each model, all features implemented, 
+/* For each model, all features implemented,
 * those marked with R are relative to HOTK, A for absolute */
 struct model_data {
-        char *name;             //name of the laptop________________A
+        char *name;             /* name of the laptop________________A */
-        char *mt_mled;          //method to handle mled_____________R
+        char *mt_mled;          /* method to handle mled_____________R */
-        char *mled_status;      //node to handle mled reading_______A
+        char *mled_status;      /* node to handle mled reading_______A */
-        char *mt_wled;          //method to handle wled_____________R
+        char *mt_wled;          /* method to handle wled_____________R */
-        char *wled_status;      //node to handle wled reading_______A
+        char *wled_status;      /* node to handle wled reading_______A */
-        char *mt_tled;          //method to handle tled_____________R
+        char *mt_tled;          /* method to handle tled_____________R */
-        char *tled_status;      //node to handle tled reading_______A
+        char *tled_status;      /* node to handle tled reading_______A */
-        char *mt_ledd;          //method to handle LED display______R
+        char *mt_ledd;          /* method to handle LED display______R */
-        char *mt_bt_switch;     //method to switch Bluetooth on/off_R
+        char *mt_bt_switch;     /* method to switch Bluetooth on/off_R */
-        char *bt_status;        //no model currently supports this__?
+        char *bt_status;        /* no model currently supports this__? */
-        char *mt_lcd_switch;    //method to turn LCD on/off_________A
+        char *mt_lcd_switch;    /* method to turn LCD on/off_________A */
-        char *lcd_status;       //node to read LCD panel state______A
+        char *lcd_status;       /* node to read LCD panel state______A */
-        char *brightness_up;    //method to set brightness up_______A
+        char *brightness_up;    /* method to set brightness up_______A */
-        char *brightness_down;  //guess what ?______________________A
+        char *brightness_down;  /* method to set brightness down ____A */
-        char *brightness_set;   //method to set absolute brightness_R
+        char *brightness_set;   /* method to set absolute brightness_R */
-        char *brightness_get;   //method to get absolute brightness_R
+        char *brightness_get;   /* method to get absolute brightness_R */
-        char *brightness_status;        //node to get brightness____________A
+        char *brightness_status;/* node to get brightness____________A */
-        char *display_set;      //method to set video output________R
+        char *display_set;      /* method to set video output________R */
-        char *display_get;      //method to get video output________R
+        char *display_get;      /* method to get video output________R */
 };
 /*
@@ -111,41 +111,41 @@ struct model_data {
 * about the hotk device
 */
 struct asus_hotk {
-        struct acpi_device *device;     //the device we are in
+        struct acpi_device *device;     /* the device we are in */
-        acpi_handle handle;     //the handle of the hotk device
+        acpi_handle handle;             /* the handle of the hotk device */
-        char status;            //status of the hotk, for LEDs, ...
+        char status;                    /* status of the hotk, for LEDs */
-        u32 ledd_status;        //status of the LED display
+        u32 ledd_status;                /* status of the LED display */
-        struct model_data *methods;     //methods available on the laptop
+        struct model_data *methods;     /* methods available on the laptop */
-        u8 brightness;          //brightness level
+        u8 brightness;                  /* brightness level */
        enum {
-                A1x = 0,        //A1340D, A1300F
+                A1x = 0,        /* A1340D, A1300F */
-                A2x,            //A2500H
+                A2x,            /* A2500H */
-                A4G,            //A4700G
+                A4G,            /* A4700G */
-                D1x,            //D1
+                D1x,            /* D1 */
-                L2D,            //L2000D
+                L2D,            /* L2000D */
-                L3C,            //L3800C
+                L3C,            /* L3800C */
-                L3D,            //L3400D
+                L3D,            /* L3400D */
-                L3H,            //L3H, L2000E, L5D
+                L3H,            /* L3H, L2000E, L5D */
-                L4R,            //L4500R
+                L4R,            /* L4500R */
-                L5x,            //L5800C 
+                L5x,            /* L5800C */
-                L8L,            //L8400L
+                L8L,            /* L8400L */
-                M1A,            //M1300A
+                M1A,            /* M1300A */
-                M2E,            //M2400E, L4400L
+                M2E,            /* M2400E, L4400L */
-                M6N,            //M6800N, W3400N
+                M6N,            /* M6800N, W3400N */
-                M6R,            //M6700R, A3000G
+                M6R,            /* M6700R, A3000G */
-                P30,            //Samsung P30
+                P30,            /* Samsung P30 */
-                S1x,            //S1300A, but also L1400B and M2400A (L84F)
+                S1x,            /* S1300A, but also L1400B and M2400A (L84F) */
-                S2x,            //S200 (J1 reported), Victor MP-XP7210
+                S2x,            /* S200 (J1 reported), Victor MP-XP7210 */
-                W1N,            //W1000N
+                W1N,            /* W1000N */
-                W5A,            //W5A
+                W5A,            /* W5A */
-                W3V,            //W3030V
+                W3V,            /* W3030V */
-                xxN,            //M2400N, M3700N, M5200N, M6800N, S1300N, S5200N
+                xxN,            /* M2400N, M3700N, M5200N, M6800N,
-                A4S,            //Z81sp
+                                                         S1300N, S5200N*/
-                //(Centrino)
+                A4S,            /* Z81sp */
-                F3Sa,
+                F3Sa,           /* (Centrino) */
                END_MODEL
-        } model;                //Models currently supported
+        } model;                /* Models currently supported */
-        u16 event_count[128];   //count for each event TODO make this better
+        u16 event_count[128];   /* Count for each event TODO make this better */
 };
 /* Here we go */
@@ -459,18 +459,18 @@ static struct acpi_driver asus_hotk_driver = {
                },
 };
-/* 
+/*
 * This function evaluates an ACPI method, given an int as parameter, the
 * method is searched within the scope of the handle, can be NULL. The output
 * of the method is written is output, which can also be NULL
 *
- * returns 1 if write is successful, 0 else. 
+ * returns 1 if write is successful, 0 else.
 */
 static int write_acpi_int(acpi_handle handle, const char *method, int val,
                          struct acpi_buffer *output)
 {
-        struct acpi_object_list params; //list of input parameters (an int here)
+        struct acpi_object_list params; /* list of input parameters (int) */
-        union acpi_object in_obj;       //the only param we use
+        union acpi_object in_obj;       /* the only param we use */
        acpi_status status;
        params.count = 1;
@@ -507,18 +507,18 @@ proc_read_info(char *page, char **start, off_t off, int count, int *eof,
 {
        int len = 0;
        int temp;
-        char buf[16];           //enough for all info
+        char buf[16];           /* enough for all info */
        /*
-         * We use the easy way, we don't care of off and count, so we don't set eof
+         * We use the easy way, we don't care of off and count,
-         * to 1
+         * so we don't set eof to 1
         */
        len += sprintf(page, ACPI_HOTK_NAME " " ASUS_ACPI_VERSION "\n");
        len += sprintf(page + len, "Model reference    : %s\n",
                       hotk->methods->name);
-        /* 
+        /*
-         * The SFUN method probably allows the original driver to get the list 
+         * The SFUN method probably allows the original driver to get the list
-         * of features supported by a given model. For now, 0x0100 or 0x0800 
+         * of features supported by a given model. For now, 0x0100 or 0x0800
         * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
         * The significance of others is yet to be found.
         */
@@ -528,7 +528,7 @@ proc_read_info(char *page, char **start, off_t off, int count, int *eof,
        /*
         * Another value for userspace: the ASYM method returns 0x02 for
         * battery low and 0x04 for battery critical, its readings tend to be
-         * more accurate than those provided by _BST. 
+         * more accurate than those provided by _BST.
         * Note: since not all the laptops provide this method, errors are
         * silently ignored.
         */
@@ -579,7 +579,7 @@ static int read_led(const char *ledname, int ledmask)
        return (hotk->status & ledmask) ? 1 : 0;
 }
-static int parse_arg(const char __user * buf, unsigned long count, int *val)
+static int parse_arg(const char __user *buf, unsigned long count, int *val)
 {
        char s[32];
        if (!count)
@@ -596,7 +596,7 @@ static int parse_arg(const char __user * buf, unsigned long count, int *val)
 /* FIXME: kill extraneous args so it can be called independently */
 static int
-write_led(const char __user * buffer, unsigned long count,
+write_led(const char __user *buffer, unsigned long count,
          char *ledname, int ledmask, int invert)
 {
        int rv, value;
@@ -631,7 +631,7 @@ proc_read_mled(char *page, char **start, off_t off, int count, int *eof,
 }
 static int
-proc_write_mled(struct file *file, const char __user * buffer,
+proc_write_mled(struct file *file, const char __user *buffer,
                unsigned long count, void *data)
 {
        return write_led(buffer, count, hotk->methods->mt_mled, MLED_ON, 1);
@@ -648,7 +648,7 @@ proc_read_ledd(char *page, char **start, off_t off, int count, int *eof,
 }
 static int
-proc_write_ledd(struct file *file, const char __user * buffer,
+proc_write_ledd(struct file *file, const char __user *buffer,
                unsigned long count, void *data)
 {
        int rv, value;
@@ -677,7 +677,7 @@ proc_read_wled(char *page, char **start, off_t off, int count, int *eof,
 }
 static int
-proc_write_wled(struct file *file, const char __user * buffer,
+proc_write_wled(struct file *file, const char __user *buffer,
                unsigned long count, void *data)
 {
        return write_led(buffer, count, hotk->methods->mt_wled, WLED_ON, 0);
@@ -694,10 +694,10 @@ proc_read_bluetooth(char *page, char **start, off_t off, int count, int *eof,
 }
 static int
-proc_write_bluetooth(struct file *file, const char __user * buffer,
+proc_write_bluetooth(struct file *file, const char __user *buffer,
                     unsigned long count, void *data)
 {
-        /* Note: mt_bt_switch controls both internal Bluetooth adapter's 
+        /* Note: mt_bt_switch controls both internal Bluetooth adapter's
           presence and its LED */
        return write_led(buffer, count, hotk->methods->mt_bt_switch, BT_ON, 0);
 }
@@ -714,7 +714,7 @@ proc_read_tled(char *page, char **start, off_t off, int count, int *eof,
 }
 static int
-proc_write_tled(struct file *file, const char __user * buffer,
+proc_write_tled(struct file *file, const char __user *buffer,
                unsigned long count, void *data)
 {
        return write_led(buffer, count, hotk->methods->mt_tled, TLED_ON, 0);
@@ -734,7 +734,7 @@ static int get_lcd_state(void)
                input.count = 2;
                input.pointer = mt_params;
-                /* Note: the following values are partly guessed up, but 
+                /* Note: the following values are partly guessed up, but
                   otherwise they seem to work */
                mt_params[0].type = ACPI_TYPE_INTEGER;
                mt_params[0].integer.value = 0x02;
@@ -796,12 +796,13 @@ static int set_lcd_state(int value)
                            acpi_evaluate_object(NULL,
                                                 hotk->methods->mt_lcd_switch,
                                                 NULL, NULL);
-                } else {        /* L3H and the like have to be handled differently */
+                } else {
+                        /* L3H and the like must be handled differently */
                        if (!write_acpi_int
                            (hotk->handle, hotk->methods->mt_lcd_switch, 0x07,
                             NULL))
                                status = AE_ERROR;
-                        /* L3H's AML executes EHK (0x07) upon Fn+F7 keypress, 
+                        /* L3H's AML executes EHK (0x07) upon Fn+F7 keypress,
                           the exact behaviour is simulated here */
                }
                if (ACPI_FAILURE(status))
@@ -819,7 +820,7 @@ proc_read_lcd(char *page, char **start, off_t off, int count, int *eof,
 }
 static int
-proc_write_lcd(struct file *file, const char __user * buffer,
+proc_write_lcd(struct file *file, const char __user *buffer,
               unsigned long count, void *data)
 {
        int rv, value;
@@ -897,7 +898,7 @@ proc_read_brn(char *page, char **start, off_t off, int count, int *eof,
 }
 static int
-proc_write_brn(struct file *file, const char __user * buffer,
+proc_write_brn(struct file *file, const char __user *buffer,
               unsigned long count, void *data)
 {
        int rv, value;
@@ -921,7 +922,7 @@ static void set_display(int value)
 }
 /*
- * Now, *this* one could be more user-friendly, but so far, no-one has 
+ * Now, *this* one could be more user-friendly, but so far, no-one has
 * complained. The significance of bits is the same as in proc_write_disp()
 */
 static int
@@ -933,18 +934,18 @@ proc_read_disp(char *page, char **start, off_t off, int count, int *eof,
        if (!read_acpi_int(hotk->handle, hotk->methods->display_get, &value))
                printk(KERN_WARNING
                       "Asus ACPI: Error reading display status\n");
-        value &= 0x07;          /* needed for some models, shouldn't hurt others */
+        value &= 0x07;  /* needed for some models, shouldn't hurt others */
        return sprintf(page, "%d\n", value);
 }
 /*
- * Experimental support for display switching. As of now: 1 should activate 
+ * Experimental support for display switching. As of now: 1 should activate
- * the LCD output, 2 should do for CRT, and 4 for TV-Out. Any combination 
+ * the LCD output, 2 should do for CRT, and 4 for TV-Out. Any combination
- * (bitwise) of these will suffice. I never actually tested 3 displays hooked up 
+ * (bitwise) of these will suffice. I never actually tested 3 displays hooked
- * simultaneously, so be warned. See the acpi4asus README for more info.
+ * up simultaneously, so be warned. See the acpi4asus README for more info.
 */
 static int
-proc_write_disp(struct file *file, const char __user * buffer,
+proc_write_disp(struct file *file, const char __user *buffer,
                unsigned long count, void *data)
 {
        int rv, value;
@@ -957,12 +958,12 @@ proc_write_disp(struct file *file, const char __user * buffer,
 typedef int (proc_readfunc) (char *page, char **start, off_t off, int count,
                             int *eof, void *data);
-typedef int (proc_writefunc) (struct file * file, const char __user * buffer,
+typedef int (proc_writefunc) (struct file *file, const char __user *buffer,
                              unsigned long count, void *data);
 static int
-asus_proc_add(char *name, proc_writefunc * writefunc,
+asus_proc_add(char *name, proc_writefunc *writefunc,
-                     proc_readfunc * readfunc, mode_t mode,
+                     proc_readfunc *readfunc, mode_t mode,
                     struct acpi_device *device)
 {
        struct proc_dir_entry *proc =
@@ -1040,9 +1041,9 @@ static int asus_hotk_add_fs(struct acpi_device *device)
                              &proc_read_bluetooth, mode, device);
        }
-        /* 
+        /*
-         * We need both read node and write method as LCD switch is also accessible
+         * We need both read node and write method as LCD switch is also
-         * from keyboard 
+         * accessible from the keyboard
         */
        if (hotk->methods->mt_lcd_switch && hotk->methods->lcd_status) {
                asus_proc_add(PROC_LCD, &proc_write_lcd, &proc_read_lcd, mode,
@@ -1096,11 +1097,10 @@ static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
        if (!hotk)
                return;
-        if ((event & ~((u32) BR_UP)) < 16) {
+        if ((event & ~((u32) BR_UP)) < 16)
                hotk->brightness = (event & ~((u32) BR_UP));
-        } else if ((event & ~((u32) BR_DOWN)) < 16) {
+        else if ((event & ~((u32) BR_DOWN)) < 16)
                hotk->brightness = (event & ~((u32) BR_DOWN));
-        }
        acpi_bus_generate_proc_event(hotk->device, event,
                                hotk->event_count[event % 128]++);
@@ -1186,8 +1186,8 @@ static int asus_hotk_get_info(void)
        acpi_status status;
        /*
-         * Get DSDT headers early enough to allow for differentiating between 
+         * Get DSDT headers early enough to allow for differentiating between
-         * models, but late enough to allow acpi_bus_register_driver() to fail 
+         * models, but late enough to allow acpi_bus_register_driver() to fail
         * before doing anything ACPI-specific. Should we encounter a machine,
         * which needs special handling (i.e. its hotkey device has a different
         * HID), this bit will be moved. A global variable asus_info contains
@@ -1212,8 +1212,8 @@ static int asus_hotk_get_info(void)
        /*
         * Try to match the object returned by INIT to the specific model.
-         * Handle every possible object (or the lack of thereof) the DSDT 
+         * Handle every possible object (or the lack of thereof) the DSDT
-         * writers might throw at us. When in trouble, we pass NULL to 
+         * writers might throw at us. When in trouble, we pass NULL to
         * asus_model_match() and try something completely different.
         */
        if (buffer.pointer) {
@@ -1244,6 +1244,8 @@ static int asus_hotk_get_info(void)
                               "default values\n", string);
                        printk(KERN_NOTICE
                               "  send /proc/acpi/dsdt to the developers\n");
+                        kfree(model);
+                        return -ENODEV;
                }
                hotk->methods = &model_conf[hotk->model];
                return AE_OK;
@@ -1254,7 +1256,7 @@ static int asus_hotk_get_info(void)
        /* Sort of per-model blacklist */
        if (strncmp(string, "L2B", 3) == 0)
                hotk->methods->lcd_status = NULL;
-        /* L2B is similar enough to L3C to use its settings, with this only 
+        /* L2B is similar enough to L3C to use its settings, with this only
           exception */
        else if (strncmp(string, "A3G", 3) == 0)
                hotk->methods->lcd_status = "\\BLFG";
@@ -1321,7 +1323,7 @@ static int asus_hotk_add(struct acpi_device *device)
        hotk->handle = device->handle;
        strcpy(acpi_device_name(device), ACPI_HOTK_DEVICE_NAME);
        strcpy(acpi_device_class(device), ACPI_HOTK_CLASS);
-        acpi_driver_data(device) = hotk;
+        device->driver_data = hotk;
        hotk->device = device;
        result = asus_hotk_check();
@@ -1366,10 +1368,9 @@ static int asus_hotk_add(struct acpi_device *device)
        /* LED display is off by default */
        hotk->ledd_status = 0xFFF;
-      end:
+end:
-        if (result) {
+        if (result)
                kfree(hotk);
-        }
        return result;
 }
@@ -1394,8 +1395,8 @@ static int asus_hotk_remove(struct acpi_device *device, int type)
 }
 static struct backlight_ops asus_backlight_data = {
-        .get_brightness = read_brightness,
+        .get_brightness = read_brightness,
-        .update_status  = set_brightness_status,
+        .update_status  = set_brightness_status,
 };
 static void asus_acpi_exit(void)
@@ -1442,15 +1443,15 @@ static int __init asus_acpi_init(void)
                return -ENODEV;
        }
-        asus_backlight_device = backlight_device_register("asus",NULL,NULL,
+        asus_backlight_device = backlight_device_register("asus", NULL, NULL,
                                                          &asus_backlight_data);
-        if (IS_ERR(asus_backlight_device)) {
+        if (IS_ERR(asus_backlight_device)) {
                printk(KERN_ERR "Could not register asus backlight device\n");
                asus_backlight_device = NULL;
                asus_acpi_exit();
                return -ENODEV;
        }
-        asus_backlight_device->props.max_brightness = 15;
+        asus_backlight_device->props.max_brightness = 15;
        return 0;
 }
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index b1c723f9f58d..de8046933bce 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -804,7 +804,7 @@ static int acpi_battery_add(struct acpi_device *device)
        battery->device = device;
        strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME);
        strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS);
-        acpi_driver_data(device) = battery;
+        device->driver_data = battery;
        mutex_init(&battery->lock);
        acpi_battery_update(battery);
 #ifdef CONFIG_ACPI_PROCFS_POWER
diff --git a/drivers/acpi/bay.c b/drivers/acpi/bay.c
deleted file mode 100644
index 61b6c5beb2d3..000000000000
--- a/drivers/acpi/bay.c
+++ /dev/null
@@ -1,411 +0,0 @@
-/*
- *  bay.c - ACPI removable drive bay driver
- *
- *  Copyright (C) 2006 Kristen Carlson Accardi <kristen.c.accardi@intel.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.,
- *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/notifier.h>
-#include <acpi/acpi_bus.h>
-#include <acpi/acpi_drivers.h>
-#include <linux/seq_file.h>
-#include <asm/uaccess.h>
-#include <linux/platform_device.h>
-ACPI_MODULE_NAME("bay");
-MODULE_AUTHOR("Kristen Carlson Accardi");
-MODULE_DESCRIPTION("ACPI Removable Drive Bay Driver");
-MODULE_LICENSE("GPL");
-#define ACPI_BAY_CLASS "bay"
-#define ACPI_BAY_COMPONENT      0x10000000
-#define _COMPONENT ACPI_BAY_COMPONENT
-#define bay_dprintk(h,s) {\
-        char prefix[80] = {'\0'};\
-        struct acpi_buffer buffer = {sizeof(prefix), prefix};\
-        acpi_get_name(h, ACPI_FULL_PATHNAME, &buffer);\
-        printk(KERN_DEBUG PREFIX "%s: %s\n", prefix, s); }
-static void bay_notify(acpi_handle handle, u32 event, void *data);
-static const struct acpi_device_id bay_device_ids[] = {
-        {"LNXIOBAY", 0},
-        {"", 0},
-};
-MODULE_DEVICE_TABLE(acpi, bay_device_ids);
-struct bay {
-        acpi_handle handle;
-        char *name;
-        struct list_head list;
-        struct platform_device *pdev;
-};
-static LIST_HEAD(drive_bays);
-/*****************************************************************************
- *                         Drive Bay functions                               *
- *****************************************************************************/
-/**
- * is_ejectable - see if a device is ejectable
- * @handle: acpi handle of the device
- *
- * If an acpi object has a _EJ0 method, then it is ejectable
- */
-static int is_ejectable(acpi_handle handle)
-{
-        acpi_status status;
-        acpi_handle tmp;
-        status = acpi_get_handle(handle, "_EJ0", &tmp);
-        if (ACPI_FAILURE(status))
-                return 0;
-        return 1;
-}
-/**
- * bay_present - see if the bay device is present
- * @bay: the drive bay
- *
- * execute the _STA method.
- */
-static int bay_present(struct bay *bay)
-{
-        unsigned long sta;
-        acpi_status status;
-        if (bay) {
-                status = acpi_evaluate_integer(bay->handle, "_STA", NULL, &sta);
-                if (ACPI_SUCCESS(status) && sta)
-                        return 1;
-        }
-        return 0;
-}
-/**
- * eject_device - respond to an eject request
- * @handle - the device to eject
- *
- * Call this devices _EJ0 method.
- */
-static void eject_device(acpi_handle handle)
-{
-        struct acpi_object_list arg_list;
-        union acpi_object arg;
-        bay_dprintk(handle, "Ejecting device");
-        arg_list.count = 1;
-        arg_list.pointer = &arg;
-        arg.type = ACPI_TYPE_INTEGER;
-        arg.integer.value = 1;
-        if (ACPI_FAILURE(acpi_evaluate_object(handle, "_EJ0",
-                                              &arg_list, NULL)))
-                pr_debug("Failed to evaluate _EJ0!\n");
-}
-/*
- * show_present - read method for "present" file in sysfs
- */
-static ssize_t show_present(struct device *dev,
-                           struct device_attribute *attr, char *buf)
-{
-        struct bay *bay = dev_get_drvdata(dev);
-        return snprintf(buf, PAGE_SIZE, "%d\n", bay_present(bay));
-}
-static DEVICE_ATTR(present, S_IRUGO, show_present, NULL);
-/*
- * write_eject - write method for "eject" file in sysfs
- */
-static ssize_t write_eject(struct device *dev, struct device_attribute *attr,
-                           const char *buf, size_t count)
-{
-        struct bay *bay = dev_get_drvdata(dev);
-        if (!count)
-                return -EINVAL;
-        eject_device(bay->handle);
-        return count;
-}
-static DEVICE_ATTR(eject, S_IWUSR, NULL, write_eject);
-/**
- * is_ata - see if a device is an ata device
- * @handle: acpi handle of the device
- *
- * If an acpi object has one of 4 ATA ACPI methods defined,
- * then it is an ATA device
- */
-static int is_ata(acpi_handle handle)
-{
-        acpi_handle tmp;
-        if ((ACPI_SUCCESS(acpi_get_handle(handle, "_GTF", &tmp))) ||
-           (ACPI_SUCCESS(acpi_get_handle(handle, "_GTM", &tmp))) ||
-           (ACPI_SUCCESS(acpi_get_handle(handle, "_STM", &tmp))) ||
-           (ACPI_SUCCESS(acpi_get_handle(handle, "_SDD", &tmp))))
-                return 1;
-        return 0;
-}
-/**
- * parent_is_ata(acpi_handle handle)
- *
- */
-static int parent_is_ata(acpi_handle handle)
-{
-        acpi_handle phandle;
-        if (acpi_get_parent(handle, &phandle))
-                return 0;
-        return is_ata(phandle);
-}
-/**
- * is_ejectable_bay - see if a device is an ejectable drive bay
- * @handle: acpi handle of the device
- *
- * If an acpi object is ejectable and has one of the ACPI ATA
- * methods defined, then we can safely call it an ejectable
- * drive bay
- */
-static int is_ejectable_bay(acpi_handle handle)
-{
-        if ((is_ata(handle) || parent_is_ata(handle)) && is_ejectable(handle))
-                return 1;
-        return 0;
-}
-#if 0
-/**
- * eject_removable_drive - try to eject this drive
- * @dev : the device structure of the drive
- *
- * If a device is a removable drive that requires an _EJ0 method
- * to be executed in order to safely remove from the system, do
- * it.  ATM - always returns success
- */
-int eject_removable_drive(struct device *dev)
-{
-        acpi_handle handle = DEVICE_ACPI_HANDLE(dev);
-        if (handle) {
-                bay_dprintk(handle, "Got device handle");
-                if (is_ejectable_bay(handle))
-                        eject_device(handle);
-        } else {
-                printk("No acpi handle for device\n");
-        }
-        /* should I return an error code? */
-        return 0;
-}
-EXPORT_SYMBOL_GPL(eject_removable_drive);
-#endif  /*  0  */
-static int acpi_bay_add_fs(struct bay *bay)
-{
-        int ret;
-        struct device *dev = &bay->pdev->dev;
-        ret = device_create_file(dev, &dev_attr_present);
-        if (ret)
-                goto add_fs_err;
-        ret = device_create_file(dev, &dev_attr_eject);
-        if (ret) {
-                device_remove_file(dev, &dev_attr_present);
-                goto add_fs_err;
-        }
-        return 0;
- add_fs_err:
-        bay_dprintk(bay->handle, "Error adding sysfs files\n");
-        return ret;
-}
-static void acpi_bay_remove_fs(struct bay *bay)
-{
-        struct device *dev = &bay->pdev->dev;
-        /* cleanup sysfs */
-        device_remove_file(dev, &dev_attr_present);
-        device_remove_file(dev, &dev_attr_eject);
-}
-static int bay_is_dock_device(acpi_handle handle)
-{
-        acpi_handle parent;
-        acpi_get_parent(handle, &parent);
-        /* if the device or it's parent is dependent on the
-         * dock, then we are a dock device
-         */
-        return (is_dock_device(handle) || is_dock_device(parent));
-}
-static int bay_add(acpi_handle handle, int id)
-{
-        acpi_status status;
-        struct bay *new_bay;
-        struct platform_device *pdev;
-        struct acpi_buffer nbuffer = {ACPI_ALLOCATE_BUFFER, NULL};
-        acpi_get_name(handle, ACPI_FULL_PATHNAME, &nbuffer);
-        bay_dprintk(handle, "Adding notify handler");
-        /*
-         * Initialize bay device structure
-         */
-        new_bay = kzalloc(sizeof(*new_bay), GFP_ATOMIC);
-        INIT_LIST_HEAD(&new_bay->list);
-        new_bay->handle = handle;
-        new_bay->name = (char *)nbuffer.pointer;
-        /* initialize platform device stuff */
-        pdev = platform_device_register_simple(ACPI_BAY_CLASS, id, NULL, 0);
-        if (IS_ERR(pdev)) {
-                printk(KERN_ERR PREFIX "Error registering bay device\n");
-                goto bay_add_err;
-        }
-        new_bay->pdev = pdev;
-        platform_set_drvdata(pdev, new_bay);
-        /*
-         * we want the bay driver to be able to send uevents
-         */
-        pdev->dev.uevent_suppress = 0;
-        /* register for events on this device */
-        status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
-                        bay_notify, new_bay);
-        if (ACPI_FAILURE(status)) {
-                printk(KERN_INFO PREFIX "Error installing bay notify handler\n");
-                platform_device_unregister(new_bay->pdev);
-                goto bay_add_err;
-        }
-        if (acpi_bay_add_fs(new_bay)) {
-                acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
-                                           bay_notify);
-                platform_device_unregister(new_bay->pdev);
-                goto bay_add_err;
-        }
-        /* if we are on a dock station, we should register for dock
-         * notifications.
-         */
-        if (bay_is_dock_device(handle)) {
-                bay_dprintk(handle, "Is dependent on dock\n");
-                register_hotplug_dock_device(handle, bay_notify, new_bay);
-        }
-        list_add(&new_bay->list, &drive_bays);
-        printk(KERN_INFO PREFIX "Bay [%s] Added\n", new_bay->name);
-        return 0;
-bay_add_err:
-        kfree(new_bay->name);
-        kfree(new_bay);
-        return -ENODEV;
-}
-/**
- * bay_notify - act upon an acpi bay notification
- * @handle: the bay handle
- * @event: the acpi event
- * @data: our driver data struct
- *
- */
-static void bay_notify(acpi_handle handle, u32 event, void *data)
-{
-        struct bay *bay_dev = (struct bay *)data;
-        struct device *dev = &bay_dev->pdev->dev;
-        char event_string[12];
-        char *envp[] = { event_string, NULL };
-        bay_dprintk(handle, "Bay event");
-        sprintf(event_string, "BAY_EVENT=%d", event);
-        kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
-}
-static acpi_status
-find_bay(acpi_handle handle, u32 lvl, void *context, void **rv)
-{
-        int *count = (int *)context;
-        /*
-         * there could be more than one ejectable bay.
-         * so, just return AE_OK always so that every object
-         * will be checked.
-         */
-        if (is_ejectable_bay(handle)) {
-                bay_dprintk(handle, "found ejectable bay");
-                if (!bay_add(handle, *count))
-                        (*count)++;
-        }
-        return AE_OK;
-}
-static int __init bay_init(void)
-{
-        int bays = 0;
-        INIT_LIST_HEAD(&drive_bays);
-        if (acpi_disabled)
-                return -ENODEV;
-        /* look for dockable drive bays */
-        acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
-                ACPI_UINT32_MAX, find_bay, &bays, NULL);
-        if (!bays)
-                return -ENODEV;
-        return 0;
-}
-static void __exit bay_exit(void)
-{
-        struct bay *bay, *tmp;
-        list_for_each_entry_safe(bay, tmp, &drive_bays, list) {
-                if (is_dock_device(bay->handle))
-                        unregister_hotplug_dock_device(bay->handle);
-                acpi_bay_remove_fs(bay);
-                acpi_remove_notify_handler(bay->handle, ACPI_SYSTEM_NOTIFY,
-                        bay_notify);
-                platform_device_unregister(bay->pdev);
-                kfree(bay->name);
-                kfree(bay);
-        }
-}
-postcore_initcall(bay_init);
-module_exit(bay_exit);
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index ccae305ee55d..b11400e2f856 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -48,6 +48,23 @@ EXPORT_SYMBOL(acpi_root_dir);
 #define STRUCT_TO_INT(s)        (*((int*)&s))
+static int set_power_nocheck(const struct dmi_system_id *id)
+{
+        printk(KERN_NOTICE PREFIX "%s detected - "
+                "disable power check in power transistion\n", id->ident);
+        acpi_power_nocheck = 1;
+        return 0;
+}
+static struct dmi_system_id __cpuinitdata power_nocheck_dmi_table[] = {
+        {
+        set_power_nocheck, "HP Pavilion 05", {
+        DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
+        DMI_MATCH(DMI_SYS_VENDOR, "HP Pavilion 05"),
+        DMI_MATCH(DMI_PRODUCT_VERSION, "2001211RE101GLEND") }, NULL},
+        {},
+};
 /* --------------------------------------------------------------------------
                                Device Management
   -------------------------------------------------------------------------- */
@@ -95,21 +112,21 @@ int acpi_bus_get_status(struct acpi_device *device)
        }
        /*
-         * Otherwise we assume the status of our parent (unless we don't
+         * According to ACPI spec some device can be present and functional
-         * have one, in which case status is implied).
+         * even if the parent is not present but functional.
+         * In such conditions the child device should not inherit the status
+         * from the parent.
         */
-        else if (device->parent)
-                device->status = device->parent->status;
        else
                STRUCT_TO_INT(device->status) =
                    ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED |
                    ACPI_STA_DEVICE_UI      | ACPI_STA_DEVICE_FUNCTIONING;
        if (device->status.functional && !device->status.present) {
-                printk(KERN_WARNING PREFIX "Device [%s] status [%08x]: "
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: "
-                       "functional but not present; setting present\n",
+                       "functional but not present;\n",
-                       device->pnp.bus_id, (u32) STRUCT_TO_INT(device->status));
+                        device->pnp.bus_id,
-                device->status.present = 1;
+                        (u32) STRUCT_TO_INT(device->status)));
        }
        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]\n",
@@ -223,7 +240,19 @@ int acpi_bus_set_power(acpi_handle handle, int state)
        /*
         * Get device's current power state
         */
-        acpi_bus_get_power(device->handle, &device->power.state);
+        if (!acpi_power_nocheck) {
+                /*
+                 * Maybe the incorrect power state is returned on the bogus
+                 * bios, which is different with the real power state.
+                 * For example: the bios returns D0 state and the real power
+                 * state is D3. OS expects to set the device to D0 state. In
+                 * such case if OS uses the power state returned by the BIOS,
+                 * the device can't be transisted to the correct power state.
+                 * So if the acpi_power_nocheck is set, it is unnecessary to
+                 * get the power state by calling acpi_bus_get_power.
+                 */
+                acpi_bus_get_power(device->handle, &device->power.state);
+        }
        if ((state == device->power.state) && !device->flags.force_power_state) {
                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
                                  state));
@@ -496,6 +525,19 @@ static int acpi_bus_check_scope(struct acpi_device *device)
        return 0;
 }
+static BLOCKING_NOTIFIER_HEAD(acpi_bus_notify_list);
+int register_acpi_bus_notifier(struct notifier_block *nb)
+{
+        return blocking_notifier_chain_register(&acpi_bus_notify_list, nb);
+}
+EXPORT_SYMBOL_GPL(register_acpi_bus_notifier);
+void unregister_acpi_bus_notifier(struct notifier_block *nb)
+{
+        blocking_notifier_chain_unregister(&acpi_bus_notify_list, nb);
+}
+EXPORT_SYMBOL_GPL(unregister_acpi_bus_notifier);
 /**
 * acpi_bus_notify
 * ---------------
@@ -506,6 +548,8 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
        int result = 0;
        struct acpi_device *device = NULL;
+        blocking_notifier_call_chain(&acpi_bus_notify_list,
+                type, (void *)handle);
        if (acpi_bus_get_device(handle, &device))
                return;
@@ -749,6 +793,12 @@ static int __init acpi_bus_init(void)
                goto error1;
        }
+        /*
+         * Maybe EC region is required at bus_scan/acpi_get_devices. So it
+         * is necessary to enable it as early as possible.
+         */
+        acpi_boot_ec_enable();
        printk(KERN_INFO PREFIX "Interpreter enabled\n");
        /* Initialize sleep structures */
@@ -818,7 +868,11 @@ static int __init acpi_init(void)
                }
        } else
                disable_acpi();
+        /*
+         * If the laptop falls into the DMI check table, the power state check
+         * will be disabled in the course of device power transistion.
+         */
+        dmi_check_system(power_nocheck_dmi_table);
        return result;
 }
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 1dfec413588c..e22033ea2614 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -384,7 +384,7 @@ static int acpi_button_add(struct acpi_device *device)
                return -ENOMEM;
        button->device = device;
-        acpi_driver_data(device) = button;
+        device->driver_data = button;
        button->input = input = input_allocate_device();
        if (!input) {
diff --git a/drivers/acpi/cm_sbs.c b/drivers/acpi/cm_sbs.c
index f9db4f444bd0..4441e84b28a9 100644
--- a/drivers/acpi/cm_sbs.c
+++ b/drivers/acpi/cm_sbs.c
@@ -52,8 +52,8 @@ struct proc_dir_entry *acpi_lock_ac_dir(void)
        if (acpi_ac_dir) {
                lock_ac_dir_cnt++;
        } else {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                printk(KERN_ERR PREFIX
-                                  "Cannot create %s\n", ACPI_AC_CLASS));
+                                  "Cannot create %s\n", ACPI_AC_CLASS);
        }
        mutex_unlock(&cm_sbs_mutex);
        return acpi_ac_dir;
@@ -83,8 +83,8 @@ struct proc_dir_entry *acpi_lock_battery_dir(void)
        if (acpi_battery_dir) {
                lock_battery_dir_cnt++;
        } else {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                printk(KERN_ERR PREFIX
-                                  "Cannot create %s\n", ACPI_BATTERY_CLASS));
+                                  "Cannot create %s\n", ACPI_BATTERY_CLASS);
        }
        mutex_unlock(&cm_sbs_mutex);
        return acpi_battery_dir;
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 3c25ec7a1871..03ea8478e393 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -108,7 +108,7 @@ static int acpi_container_add(struct acpi_device *device)
        container->handle = device->handle;
        strcpy(acpi_device_name(device), ACPI_CONTAINER_DEVICE_NAME);
        strcpy(acpi_device_class(device), ACPI_CONTAINER_CLASS);
-        acpi_driver_data(device) = container;
+        device->driver_data = container;
        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device <%s> bid <%s>\n",
                          acpi_device_name(device), acpi_device_bid(device)));
diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c
index 6df564f4ca6e..abf36b4b1d1d 100644
--- a/drivers/acpi/debug.c
+++ b/drivers/acpi/debug.c
@@ -47,8 +47,6 @@ static const struct acpi_dlayer acpi_debug_layers[] = {
 };
 static const struct acpi_dlevel acpi_debug_levels[] = {
-        ACPI_DEBUG_INIT(ACPI_LV_ERROR),
-        ACPI_DEBUG_INIT(ACPI_LV_WARN),
        ACPI_DEBUG_INIT(ACPI_LV_INIT),
        ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT),
        ACPI_DEBUG_INIT(ACPI_LV_INFO),
diff --git a/drivers/acpi/dispatcher/dsmethod.c b/drivers/acpi/dispatcher/dsmethod.c
index 4613b9ca5792..279a5a60a0dd 100644
--- a/drivers/acpi/dispatcher/dsmethod.c
+++ b/drivers/acpi/dispatcher/dsmethod.c
@@ -103,6 +103,9 @@ acpi_ds_method_error(acpi_status status, struct acpi_walk_state *walk_state)
                                                    NULL);
                acpi_ex_enter_interpreter();
        }
+        acpi_ds_clear_implicit_return(walk_state);
 #ifdef ACPI_DISASSEMBLER
        if (ACPI_FAILURE(status)) {
diff --git a/drivers/acpi/dispatcher/dsmthdat.c b/drivers/acpi/dispatcher/dsmthdat.c
index 13c43eac35db..d03f81bd1bcb 100644
--- a/drivers/acpi/dispatcher/dsmthdat.c
+++ b/drivers/acpi/dispatcher/dsmthdat.c
@@ -43,7 +43,6 @@
 #include <acpi/acpi.h>
 #include <acpi/acdispat.h>
-#include <acpi/amlcode.h>
 #include <acpi/acnamesp.h>
 #include <acpi/acinterp.h>
@@ -52,11 +51,11 @@ ACPI_MODULE_NAME("dsmthdat")
 /* Local prototypes */
 static void
-acpi_ds_method_data_delete_value(u16 opcode,
+acpi_ds_method_data_delete_value(u8 type,
                                 u32 index, struct acpi_walk_state *walk_state);
 static acpi_status
-acpi_ds_method_data_set_value(u16 opcode,
+acpi_ds_method_data_set_value(u8 type,
                              u32 index,
                              union acpi_operand_object *object,
                              struct acpi_walk_state *walk_state);
@@ -216,7 +215,7 @@ acpi_ds_method_data_init_args(union acpi_operand_object **params,
                 * Store the argument in the method/walk descriptor.
                 * Do not copy the arg in order to implement call by reference
                 */
-                status = acpi_ds_method_data_set_value(AML_ARG_OP, index,
+                status = acpi_ds_method_data_set_value(ACPI_REFCLASS_ARG, index,
                                                       params[index],
                                                       walk_state);
                if (ACPI_FAILURE(status)) {
@@ -234,7 +233,8 @@ acpi_ds_method_data_init_args(union acpi_operand_object **params,
 *
 * FUNCTION:    acpi_ds_method_data_get_node
 *
- * PARAMETERS:  Opcode              - Either AML_LOCAL_OP or AML_ARG_OP
+ * PARAMETERS:  Type                - Either ACPI_REFCLASS_LOCAL or
+ *                                    ACPI_REFCLASS_ARG
 *              Index               - Which Local or Arg whose type to get
 *              walk_state          - Current walk state object
 *              Node                - Where the node is returned.
@@ -246,7 +246,7 @@ acpi_ds_method_data_init_args(union acpi_operand_object **params,
 ******************************************************************************/
 acpi_status
-acpi_ds_method_data_get_node(u16 opcode,
+acpi_ds_method_data_get_node(u8 type,
                             u32 index,
                             struct acpi_walk_state *walk_state,
                             struct acpi_namespace_node **node)
@@ -256,8 +256,8 @@ acpi_ds_method_data_get_node(u16 opcode,
        /*
         * Method Locals and Arguments are supported
         */
-        switch (opcode) {
+        switch (type) {
-        case AML_LOCAL_OP:
+        case ACPI_REFCLASS_LOCAL:
                if (index > ACPI_METHOD_MAX_LOCAL) {
                        ACPI_ERROR((AE_INFO,
@@ -271,7 +271,7 @@ acpi_ds_method_data_get_node(u16 opcode,
                *node = &walk_state->local_variables[index];
                break;
-        case AML_ARG_OP:
+        case ACPI_REFCLASS_ARG:
                if (index > ACPI_METHOD_MAX_ARG) {
                        ACPI_ERROR((AE_INFO,
@@ -286,8 +286,8 @@ acpi_ds_method_data_get_node(u16 opcode,
                break;
        default:
-                ACPI_ERROR((AE_INFO, "Opcode %d is invalid", opcode));
+                ACPI_ERROR((AE_INFO, "Type %d is invalid", type));
-                return_ACPI_STATUS(AE_AML_BAD_OPCODE);
+                return_ACPI_STATUS(AE_TYPE);
        }
        return_ACPI_STATUS(AE_OK);
@@ -297,7 +297,8 @@ acpi_ds_method_data_get_node(u16 opcode,
 *
 * FUNCTION:    acpi_ds_method_data_set_value
 *
- * PARAMETERS:  Opcode              - Either AML_LOCAL_OP or AML_ARG_OP
+ * PARAMETERS:  Type                - Either ACPI_REFCLASS_LOCAL or
+ *                                    ACPI_REFCLASS_ARG
 *              Index               - Which Local or Arg to get
 *              Object              - Object to be inserted into the stack entry
 *              walk_state          - Current walk state object
@@ -310,7 +311,7 @@ acpi_ds_method_data_get_node(u16 opcode,
 ******************************************************************************/
 static acpi_status
-acpi_ds_method_data_set_value(u16 opcode,
+acpi_ds_method_data_set_value(u8 type,
                              u32 index,
                              union acpi_operand_object *object,
                              struct acpi_walk_state *walk_state)
@@ -321,13 +322,13 @@ acpi_ds_method_data_set_value(u16 opcode,
        ACPI_FUNCTION_TRACE(ds_method_data_set_value);
        ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
-                          "NewObj %p Opcode %X, Refs=%d [%s]\n", object,
+                          "NewObj %p Type %2.2X, Refs=%d [%s]\n", object,
-                          opcode, object->common.reference_count,
+                          type, object->common.reference_count,
                          acpi_ut_get_type_name(object->common.type)));
        /* Get the namespace node for the arg/local */
-        status = acpi_ds_method_data_get_node(opcode, index, walk_state, &node);
+        status = acpi_ds_method_data_get_node(type, index, walk_state, &node);
        if (ACPI_FAILURE(status)) {
                return_ACPI_STATUS(status);
        }
@@ -350,7 +351,8 @@ acpi_ds_method_data_set_value(u16 opcode,
 *
 * FUNCTION:    acpi_ds_method_data_get_value
 *
- * PARAMETERS:  Opcode              - Either AML_LOCAL_OP or AML_ARG_OP
+ * PARAMETERS:  Type                - Either ACPI_REFCLASS_LOCAL or
+ *                                    ACPI_REFCLASS_ARG
 *              Index               - Which local_var or argument to get
 *              walk_state          - Current walk state object
 *              dest_desc           - Where Arg or Local value is returned
@@ -363,7 +365,7 @@ acpi_ds_method_data_set_value(u16 opcode,
 ******************************************************************************/
 acpi_status
-acpi_ds_method_data_get_value(u16 opcode,
+acpi_ds_method_data_get_value(u8 type,
                              u32 index,
                              struct acpi_walk_state *walk_state,
                              union acpi_operand_object **dest_desc)
@@ -383,7 +385,7 @@ acpi_ds_method_data_get_value(u16 opcode,
        /* Get the namespace node for the arg/local */
-        status = acpi_ds_method_data_get_node(opcode, index, walk_state, &node);
+        status = acpi_ds_method_data_get_node(type, index, walk_state, &node);
        if (ACPI_FAILURE(status)) {
                return_ACPI_STATUS(status);
        }
@@ -419,8 +421,8 @@ acpi_ds_method_data_get_value(u16 opcode,
                /* Otherwise, return the error */
                else
-                        switch (opcode) {
+                        switch (type) {
-                        case AML_ARG_OP:
+                        case ACPI_REFCLASS_ARG:
                                ACPI_ERROR((AE_INFO,
                                            "Uninitialized Arg[%d] at node %p",
@@ -428,7 +430,7 @@ acpi_ds_method_data_get_value(u16 opcode,
                                return_ACPI_STATUS(AE_AML_UNINITIALIZED_ARG);
-                        case AML_LOCAL_OP:
+                        case ACPI_REFCLASS_LOCAL:
                                ACPI_ERROR((AE_INFO,
                                            "Uninitialized Local[%d] at node %p",
@@ -437,9 +439,10 @@ acpi_ds_method_data_get_value(u16 opcode,
                                return_ACPI_STATUS(AE_AML_UNINITIALIZED_LOCAL);
                        default:
                                ACPI_ERROR((AE_INFO,
                                            "Not a Arg/Local opcode: %X",
-                                            opcode));
+                                            type));
                                return_ACPI_STATUS(AE_AML_INTERNAL);
                        }
        }
@@ -458,7 +461,8 @@ acpi_ds_method_data_get_value(u16 opcode,
 *
 * FUNCTION:    acpi_ds_method_data_delete_value
 *
- * PARAMETERS:  Opcode              - Either AML_LOCAL_OP or AML_ARG_OP
+ * PARAMETERS:  Type                - Either ACPI_REFCLASS_LOCAL or
+ *                                    ACPI_REFCLASS_ARG
 *              Index               - Which local_var or argument to delete
 *              walk_state          - Current walk state object
 *
@@ -470,7 +474,7 @@ acpi_ds_method_data_get_value(u16 opcode,
 ******************************************************************************/
 static void
-acpi_ds_method_data_delete_value(u16 opcode,
+acpi_ds_method_data_delete_value(u8 type,
                                 u32 index, struct acpi_walk_state *walk_state)
 {
        acpi_status status;
@@ -481,7 +485,7 @@ acpi_ds_method_data_delete_value(u16 opcode,
        /* Get the namespace node for the arg/local */
-        status = acpi_ds_method_data_get_node(opcode, index, walk_state, &node);
+        status = acpi_ds_method_data_get_node(type, index, walk_state, &node);
        if (ACPI_FAILURE(status)) {
                return_VOID;
        }
@@ -514,7 +518,8 @@ acpi_ds_method_data_delete_value(u16 opcode,
 *
 * FUNCTION:    acpi_ds_store_object_to_local
 *
- * PARAMETERS:  Opcode              - Either AML_LOCAL_OP or AML_ARG_OP
+ * PARAMETERS:  Type                - Either ACPI_REFCLASS_LOCAL or
+ *                                    ACPI_REFCLASS_ARG
 *              Index               - Which Local or Arg to set
 *              obj_desc            - Value to be stored
 *              walk_state          - Current walk state
@@ -528,7 +533,7 @@ acpi_ds_method_data_delete_value(u16 opcode,
 ******************************************************************************/
 acpi_status
-acpi_ds_store_object_to_local(u16 opcode,
+acpi_ds_store_object_to_local(u8 type,
                              u32 index,
                              union acpi_operand_object *obj_desc,
                              struct acpi_walk_state *walk_state)
@@ -539,8 +544,8 @@ acpi_ds_store_object_to_local(u16 opcode,
        union acpi_operand_object *new_obj_desc;
        ACPI_FUNCTION_TRACE(ds_store_object_to_local);
-        ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Opcode=%X Index=%d Obj=%p\n",
+        ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Type=%2.2X Index=%d Obj=%p\n",
-                          opcode, index, obj_desc));
+                          type, index, obj_desc));
        /* Parameter validation */
@@ -550,7 +555,7 @@ acpi_ds_store_object_to_local(u16 opcode,
        /* Get the namespace node for the arg/local */
-        status = acpi_ds_method_data_get_node(opcode, index, walk_state, &node);
+        status = acpi_ds_method_data_get_node(type, index, walk_state, &node);
        if (ACPI_FAILURE(status)) {
                return_ACPI_STATUS(status);
        }
@@ -602,7 +607,7 @@ acpi_ds_store_object_to_local(u16 opcode,
                 *
                 * Weird, but true.
                 */
-                if (opcode == AML_ARG_OP) {
+                if (type == ACPI_REFCLASS_ARG) {
                        /*
                         * If we have a valid reference object that came from ref_of(),
                         * do the indirect store
@@ -611,8 +616,8 @@ acpi_ds_store_object_to_local(u16 opcode,
                             ACPI_DESC_TYPE_OPERAND)
                            && (current_obj_desc->common.type ==
                                ACPI_TYPE_LOCAL_REFERENCE)
-                            && (current_obj_desc->reference.opcode ==
+                            && (current_obj_desc->reference.class ==
-                                AML_REF_OF_OP)) {
+                                ACPI_REFCLASS_REFOF)) {
                                ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
                                                  "Arg (%p) is an ObjRef(Node), storing in node %p\n",
                                                  new_obj_desc,
@@ -640,11 +645,9 @@ acpi_ds_store_object_to_local(u16 opcode,
                        }
                }
-                /*
+                /* Delete the existing object before storing the new one */
-                 * Delete the existing object
-                 * before storing the new one
+                acpi_ds_method_data_delete_value(type, index, walk_state);
-                 */
-                acpi_ds_method_data_delete_value(opcode, index, walk_state);
        }
        /*
@@ -653,7 +656,7 @@ acpi_ds_store_object_to_local(u16 opcode,
         * (increments the object reference count by one)
         */
        status =
-            acpi_ds_method_data_set_value(opcode, index, new_obj_desc,
+            acpi_ds_method_data_set_value(type, index, new_obj_desc,
                                          walk_state);
        /* Remove local reference if we copied the object above */
diff --git a/drivers/acpi/dispatcher/dsobject.c b/drivers/acpi/dispatcher/dsobject.c
index 0f2805899210..4f08e599d07e 100644
--- a/drivers/acpi/dispatcher/dsobject.c
+++ b/drivers/acpi/dispatcher/dsobject.c
@@ -731,54 +731,70 @@ acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state,
                switch (op_info->type) {
                case AML_TYPE_LOCAL_VARIABLE:
-                        /* Split the opcode into a base opcode + offset */
+                        /* Local ID (0-7) is (AML opcode - base AML_LOCAL_OP) */
-                        obj_desc->reference.opcode = AML_LOCAL_OP;
+                        obj_desc->reference.value = opcode - AML_LOCAL_OP;
-                        obj_desc->reference.offset = opcode - AML_LOCAL_OP;
+                        obj_desc->reference.class = ACPI_REFCLASS_LOCAL;
 #ifndef ACPI_NO_METHOD_EXECUTION
-                        status = acpi_ds_method_data_get_node(AML_LOCAL_OP,
+                        status =
-                                                              obj_desc->
+                            acpi_ds_method_data_get_node(ACPI_REFCLASS_LOCAL,
-                                                              reference.offset,
+                                                         obj_desc->reference.
-                                                              walk_state,
+                                                         value, walk_state,
-                                                              (struct
+                                                         ACPI_CAST_INDIRECT_PTR
-                                                               acpi_namespace_node
+                                                         (struct
-                                                               **)&obj_desc->
+                                                          acpi_namespace_node,
-                                                              reference.object);
+                                                          &obj_desc->reference.
+                                                          object));
 #endif
                        break;
                case AML_TYPE_METHOD_ARGUMENT:
-                        /* Split the opcode into a base opcode + offset */
+                        /* Arg ID (0-6) is (AML opcode - base AML_ARG_OP) */
-                        obj_desc->reference.opcode = AML_ARG_OP;
+                        obj_desc->reference.value = opcode - AML_ARG_OP;
-                        obj_desc->reference.offset = opcode - AML_ARG_OP;
+                        obj_desc->reference.class = ACPI_REFCLASS_ARG;
 #ifndef ACPI_NO_METHOD_EXECUTION
-                        status = acpi_ds_method_data_get_node(AML_ARG_OP,
+                        status = acpi_ds_method_data_get_node(ACPI_REFCLASS_ARG,
                                                              obj_desc->
-                                                              reference.offset,
+                                                              reference.value,
                                                              walk_state,
+                                                              ACPI_CAST_INDIRECT_PTR
                                                              (struct
-                                                               acpi_namespace_node
+                                                               acpi_namespace_node,
-                                                               **)&obj_desc->
+                                                               &obj_desc->
-                                                              reference.object);
+                                                               reference.
+                                                               object));
 #endif
                        break;
-                default:        /* Other literals, etc.. */
+                default:        /* Object name or Debug object */
-                        if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) {
+                        switch (op->common.aml_opcode) {
+                        case AML_INT_NAMEPATH_OP:
                                /* Node was saved in Op */
                                obj_desc->reference.node = op->common.node;
                                obj_desc->reference.object =
                                    op->common.node->object;
-                        }
+                                obj_desc->reference.class = ACPI_REFCLASS_NAME;
+                                break;
+                        case AML_DEBUG_OP:
-                        obj_desc->reference.opcode = opcode;
+                                obj_desc->reference.class = ACPI_REFCLASS_DEBUG;
+                                break;
+                        default:
+                                ACPI_ERROR((AE_INFO,
+                                            "Unimplemented reference type for AML opcode: %4.4X",
+                                            opcode));
+                                return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
+                        }
                        break;
                }
                break;
diff --git a/drivers/acpi/dispatcher/dsopcode.c b/drivers/acpi/dispatcher/dsopcode.c
index 6a81c4400edf..69fae5905bb8 100644
--- a/drivers/acpi/dispatcher/dsopcode.c
+++ b/drivers/acpi/dispatcher/dsopcode.c
@@ -1330,7 +1330,7 @@ acpi_ds_exec_end_control_op(struct acpi_walk_state * walk_state,
                             (walk_state->results->results.obj_desc[0]) ==
                             ACPI_TYPE_LOCAL_REFERENCE)
                            && ((walk_state->results->results.obj_desc[0])->
-                                reference.opcode != AML_INDEX_OP)) {
+                                reference.class != ACPI_REFCLASS_INDEX)) {
                                status =
                                    acpi_ex_resolve_to_value(&walk_state->
                                                             results->results.
diff --git a/drivers/acpi/dispatcher/dswexec.c b/drivers/acpi/dispatcher/dswexec.c
index b5072fa9c920..396fe12078cd 100644
--- a/drivers/acpi/dispatcher/dswexec.c
+++ b/drivers/acpi/dispatcher/dswexec.c
@@ -166,6 +166,10 @@ acpi_ds_get_predicate_value(struct acpi_walk_state *walk_state,
                status = AE_CTRL_FALSE;
        }
+        /* Predicate can be used for an implicit return value */
+        (void)acpi_ds_do_implicit_return(local_obj_desc, walk_state, TRUE);
      cleanup:
        ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n",
@@ -429,10 +433,10 @@ acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state)
                             ACPI_TYPE_LOCAL_REFERENCE)
                            && (walk_state->operands[1]->common.type ==
                                ACPI_TYPE_LOCAL_REFERENCE)
-                            && (walk_state->operands[0]->reference.opcode ==
+                            && (walk_state->operands[0]->reference.class ==
-                                walk_state->operands[1]->reference.opcode)
+                                walk_state->operands[1]->reference.class)
-                            && (walk_state->operands[0]->reference.offset ==
+                            && (walk_state->operands[0]->reference.value ==
-                                walk_state->operands[1]->reference.offset)) {
+                                walk_state->operands[1]->reference.value)) {
                                status = AE_OK;
                        } else {
                                ACPI_EXCEPTION((AE_INFO, status,
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 7d2edf143f16..913bb1e89dd6 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -48,7 +48,6 @@ MODULE_PARM_DESC(immediate_undock, "1 (default) will cause the driver to "
        " before undocking");
 static struct atomic_notifier_head dock_notifier_list;
-static struct platform_device *dock_device;
 static char dock_device_name[] = "dock";
 static const struct acpi_device_id dock_device_ids[] = {
@@ -65,23 +64,29 @@ struct dock_station {
        struct mutex hp_lock;
        struct list_head dependent_devices;
        struct list_head hotplug_devices;
+        struct list_head sibiling;
+        struct platform_device *dock_device;
 };
+static LIST_HEAD(dock_stations);
+static int dock_station_count;
 struct dock_dependent_device {
        struct list_head list;
        struct list_head hotplug_list;
        acpi_handle handle;
-        acpi_notify_handler handler;
+        struct acpi_dock_ops *ops;
        void *context;
 };
 #define DOCK_DOCKING    0x00000001
 #define DOCK_UNDOCKING  0x00000002
+#define DOCK_IS_DOCK    0x00000010
+#define DOCK_IS_ATA     0x00000020
+#define DOCK_IS_BAT     0x00000040
 #define DOCK_EVENT      3
 #define UNDOCK_EVENT    2
-static struct dock_station *dock_station;
 /*****************************************************************************
 *                         Dock Dependent device functions                   *
 *****************************************************************************/
@@ -199,6 +204,60 @@ static int is_dock(acpi_handle handle)
        return 1;
 }
+static int is_ejectable(acpi_handle handle)
+{
+        acpi_status status;
+        acpi_handle tmp;
+        status = acpi_get_handle(handle, "_EJ0", &tmp);
+        if (ACPI_FAILURE(status))
+                return 0;
+        return 1;
+}
+static int is_ata(acpi_handle handle)
+{
+        acpi_handle tmp;
+        if ((ACPI_SUCCESS(acpi_get_handle(handle, "_GTF", &tmp))) ||
+           (ACPI_SUCCESS(acpi_get_handle(handle, "_GTM", &tmp))) ||
+           (ACPI_SUCCESS(acpi_get_handle(handle, "_STM", &tmp))) ||
+           (ACPI_SUCCESS(acpi_get_handle(handle, "_SDD", &tmp))))
+                return 1;
+        return 0;
+}
+static int is_battery(acpi_handle handle)
+{
+        struct acpi_device_info *info;
+        struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+        int ret = 1;
+        if (!ACPI_SUCCESS(acpi_get_object_info(handle, &buffer)))
+                return 0;
+        info = buffer.pointer;
+        if (!(info->valid & ACPI_VALID_HID))
+                ret = 0;
+        else
+                ret = !strcmp("PNP0C0A", info->hardware_id.value);
+        kfree(buffer.pointer);
+        return ret;
+}
+static int is_ejectable_bay(acpi_handle handle)
+{
+        acpi_handle phandle;
+        if (!is_ejectable(handle))
+                return 0;
+        if (is_battery(handle) || is_ata(handle))
+                return 1;
+        if (!acpi_get_parent(handle, &phandle) && is_ata(phandle))
+                return 1;
+        return 0;
+}
 /**
 * is_dock_device - see if a device is on a dock station
 * @handle: acpi handle of the device
@@ -209,11 +268,17 @@ static int is_dock(acpi_handle handle)
 */
 int is_dock_device(acpi_handle handle)
 {
-        if (!dock_station)
+        struct dock_station *dock_station;
+        if (!dock_station_count)
                return 0;
-        if (is_dock(handle) || find_dock_dependent_device(dock_station, handle))
+        if (is_dock(handle))
                return 1;
+        list_for_each_entry(dock_station, &dock_stations, sibiling) {
+                if (find_dock_dependent_device(dock_station, handle))
+                        return 1;
+        }
        return 0;
 }
@@ -320,8 +385,8 @@ static void hotplug_dock_devices(struct dock_station *ds, u32 event)
         * First call driver specific hotplug functions
         */
        list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list) {
-                if (dd->handler)
+                if (dd->ops && dd->ops->handler)
-                        dd->handler(dd->handle, event, dd->context);
+                        dd->ops->handler(dd->handle, event, dd->context);
        }
        /*
@@ -341,9 +406,10 @@ static void hotplug_dock_devices(struct dock_station *ds, u32 event)
 static void dock_event(struct dock_station *ds, u32 event, int num)
 {
-        struct device *dev = &dock_device->dev;
+        struct device *dev = &ds->dock_device->dev;
        char event_string[13];
        char *envp[] = { event_string, NULL };
+        struct dock_dependent_device *dd;
        if (num == UNDOCK_EVENT)
                sprintf(event_string, "EVENT=undock");
@@ -354,7 +420,14 @@ static void dock_event(struct dock_station *ds, u32 event, int num)
         * Indicate that the status of the dock station has
         * changed.
         */
-        kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
+        if (num == DOCK_EVENT)
+                kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
+        list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list)
+                if (dd->ops && dd->ops->uevent)
+                        dd->ops->uevent(dd->handle, event, dd->context);
+        if (num != DOCK_EVENT)
+                kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
 }
 /**
@@ -414,9 +487,10 @@ static void handle_dock(struct dock_station *ds, int dock)
        arg.type = ACPI_TYPE_INTEGER;
        arg.integer.value = dock;
        status = acpi_evaluate_object(ds->handle, "_DCK", &arg_list, &buffer);
-        if (ACPI_FAILURE(status))
+        if (ACPI_FAILURE(status) && status != AE_NOT_FOUND)
-                printk(KERN_ERR PREFIX "%s - failed to execute _DCK\n",
+                ACPI_EXCEPTION((AE_INFO, status, "%s - failed to execute"
-                         (char *)name_buffer.pointer);
+                        " _DCK\n", (char *)name_buffer.pointer));
        kfree(buffer.pointer);
        kfree(name_buffer.pointer);
 }
@@ -452,6 +526,25 @@ static inline void complete_undock(struct dock_station *ds)
        ds->flags &= ~(DOCK_UNDOCKING);
 }
+static void dock_lock(struct dock_station *ds, int lock)
+{
+        struct acpi_object_list arg_list;
+        union acpi_object arg;
+        acpi_status status;
+        arg_list.count = 1;
+        arg_list.pointer = &arg;
+        arg.type = ACPI_TYPE_INTEGER;
+        arg.integer.value = !!lock;
+        status = acpi_evaluate_object(ds->handle, "_LCK", &arg_list, NULL);
+        if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
+                if (lock)
+                        printk(KERN_WARNING PREFIX "Locking device failed\n");
+                else
+                        printk(KERN_WARNING PREFIX "Unlocking device failed\n");
+        }
+}
 /**
 * dock_in_progress - see if we are in the middle of handling a dock event
 * @ds: the dock station
@@ -479,7 +572,7 @@ static int dock_in_progress(struct dock_station *ds)
 */
 int register_dock_notifier(struct notifier_block *nb)
 {
-        if (!dock_station)
+        if (!dock_station_count)
                return -ENODEV;
        return atomic_notifier_chain_register(&dock_notifier_list, nb);
@@ -493,7 +586,7 @@ EXPORT_SYMBOL_GPL(register_dock_notifier);
 */
 void unregister_dock_notifier(struct notifier_block *nb)
 {
-        if (!dock_station)
+        if (!dock_station_count)
                return;
        atomic_notifier_chain_unregister(&dock_notifier_list, nb);
@@ -504,7 +597,7 @@ EXPORT_SYMBOL_GPL(unregister_dock_notifier);
 /**
 * register_hotplug_dock_device - register a hotplug function
 * @handle: the handle of the device
- * @handler: the acpi_notifier_handler to call after docking
+ * @ops: handlers to call after docking
 * @context: device specific data
 *
 * If a driver would like to perform a hotplug operation after a dock
@@ -512,27 +605,36 @@ EXPORT_SYMBOL_GPL(unregister_dock_notifier);
 * the dock driver after _DCK is executed.
 */
 int
-register_hotplug_dock_device(acpi_handle handle, acpi_notify_handler handler,
+register_hotplug_dock_device(acpi_handle handle, struct acpi_dock_ops *ops,
                             void *context)
 {
        struct dock_dependent_device *dd;
+        struct dock_station *dock_station;
+        int ret = -EINVAL;
-        if (!dock_station)
+        if (!dock_station_count)
                return -ENODEV;
        /*
         * make sure this handle is for a device dependent on the dock,
         * this would include the dock station itself
         */
-        dd = find_dock_dependent_device(dock_station, handle);
+        list_for_each_entry(dock_station, &dock_stations, sibiling) {
-        if (dd) {
+                /*
-                dd->handler = handler;
+                 * An ATA bay can be in a dock and itself can be ejected
-                dd->context = context;
+                 * seperately, so there are two 'dock stations' which need the
-                dock_add_hotplug_device(dock_station, dd);
+                 * ops
-                return 0;
+                 */
+                dd = find_dock_dependent_device(dock_station, handle);
+                if (dd) {
+                        dd->ops = ops;
+                        dd->context = context;
+                        dock_add_hotplug_device(dock_station, dd);
+                        ret = 0;
+                }
        }
-        return -EINVAL;
+        return ret;
 }
 EXPORT_SYMBOL_GPL(register_hotplug_dock_device);
@@ -544,13 +646,16 @@ EXPORT_SYMBOL_GPL(register_hotplug_dock_device);
 void unregister_hotplug_dock_device(acpi_handle handle)
 {
        struct dock_dependent_device *dd;
+        struct dock_station *dock_station;
-        if (!dock_station)
+        if (!dock_station_count)
                return;
-        dd = find_dock_dependent_device(dock_station, handle);
+        list_for_each_entry(dock_station, &dock_stations, sibiling) {
-        if (dd)
+                dd = find_dock_dependent_device(dock_station, handle);
-                dock_del_hotplug_device(dock_station, dd);
+                if (dd)
+                        dock_del_hotplug_device(dock_station, dd);
+        }
 }
 EXPORT_SYMBOL_GPL(unregister_hotplug_dock_device);
@@ -575,13 +680,9 @@ static int handle_eject_request(struct dock_station *ds, u32 event)
         */
        dock_event(ds, event, UNDOCK_EVENT);
-        if (!dock_present(ds)) {
-                complete_undock(ds);
-                return -ENODEV;
-        }
        hotplug_dock_devices(ds, ACPI_NOTIFY_EJECT_REQUEST);
        undock(ds);
+        dock_lock(ds, 0);
        eject_dock(ds);
        if (dock_present(ds)) {
                printk(KERN_ERR PREFIX "Unable to undock!\n");
@@ -604,14 +705,36 @@ static int handle_eject_request(struct dock_station *ds, u32 event)
 static void dock_notify(acpi_handle handle, u32 event, void *data)
 {
        struct dock_station *ds = data;
+        struct acpi_device *tmp;
+        int surprise_removal = 0;
+        /*
+         * According to acpi spec 3.0a, if a DEVICE_CHECK notification
+         * is sent and _DCK is present, it is assumed to mean an undock
+         * request.
+         */
+        if ((ds->flags & DOCK_IS_DOCK) && event == ACPI_NOTIFY_DEVICE_CHECK)
+                event = ACPI_NOTIFY_EJECT_REQUEST;
+        /*
+         * dock station: BUS_CHECK - docked or surprise removal
+         *               DEVICE_CHECK - undocked
+         * other device: BUS_CHECK/DEVICE_CHECK - added or surprise removal
+         *
+         * To simplify event handling, dock dependent device handler always
+         * get ACPI_NOTIFY_BUS_CHECK/ACPI_NOTIFY_DEVICE_CHECK for add and
+         * ACPI_NOTIFY_EJECT_REQUEST for removal
+         */
        switch (event) {
        case ACPI_NOTIFY_BUS_CHECK:
-                if (!dock_in_progress(ds) && dock_present(ds)) {
+        case ACPI_NOTIFY_DEVICE_CHECK:
+                if (!dock_in_progress(ds) && acpi_bus_get_device(ds->handle,
+                   &tmp)) {
                        begin_dock(ds);
                        dock(ds);
                        if (!dock_present(ds)) {
                                printk(KERN_ERR PREFIX "Unable to dock!\n");
+                                complete_dock(ds);
                                break;
                        }
                        atomic_notifier_call_chain(&dock_notifier_list,
@@ -619,20 +742,19 @@ static void dock_notify(acpi_handle handle, u32 event, void *data)
                        hotplug_dock_devices(ds, event);
                        complete_dock(ds);
                        dock_event(ds, event, DOCK_EVENT);
+                        dock_lock(ds, 1);
+                        break;
                }
-                break;
+                if (dock_present(ds) || dock_in_progress(ds))
-        case ACPI_NOTIFY_DEVICE_CHECK:
+                        break;
-        /*
+                /* This is a surprise removal */
-         * According to acpi spec 3.0a, if a DEVICE_CHECK notification
+                surprise_removal = 1;
-         * is sent and _DCK is present, it is assumed to mean an
+                event = ACPI_NOTIFY_EJECT_REQUEST;
-         * undock request.  This notify routine will only be called
+                /* Fall back */
-         * for objects defining _DCK, so we will fall through to eject
-         * request here.  However, we will pass an eject request through
-         * to the driver who wish to hotplug.
-         */
        case ACPI_NOTIFY_EJECT_REQUEST:
                begin_undock(ds);
-                if (immediate_undock)
+                if ((immediate_undock && !(ds->flags & DOCK_IS_ATA))
+                   || surprise_removal)
                        handle_eject_request(ds, event);
                else
                        dock_event(ds, event, UNDOCK_EVENT);
@@ -642,6 +764,51 @@ static void dock_notify(acpi_handle handle, u32 event, void *data)
        }
 }
+struct dock_data {
+        acpi_handle handle;
+        unsigned long event;
+        struct dock_station *ds;
+};
+static void acpi_dock_deferred_cb(void *context)
+{
+        struct dock_data *data = (struct dock_data *)context;
+        dock_notify(data->handle, data->event, data->ds);
+        kfree(data);
+}
+static int acpi_dock_notifier_call(struct notifier_block *this,
+        unsigned long event, void *data)
+{
+        struct dock_station *dock_station;
+        acpi_handle handle = (acpi_handle)data;
+        if (event != ACPI_NOTIFY_BUS_CHECK && event != ACPI_NOTIFY_DEVICE_CHECK
+           && event != ACPI_NOTIFY_EJECT_REQUEST)
+                return 0;
+        list_for_each_entry(dock_station, &dock_stations, sibiling) {
+                if (dock_station->handle == handle) {
+                        struct dock_data *dock_data;
+                        dock_data = kmalloc(sizeof(*dock_data), GFP_KERNEL);
+                        if (!dock_data)
+                                return 0;
+                        dock_data->handle = handle;
+                        dock_data->event = event;
+                        dock_data->ds = dock_station;
+                        acpi_os_hotplug_execute(acpi_dock_deferred_cb,
+                                dock_data);
+                        return 0 ;
+                }
+        }
+        return 0;
+}
+static struct notifier_block dock_acpi_notifier = {
+        .notifier_call = acpi_dock_notifier_call,
+};
 /**
 * find_dock_devices - find devices on the dock station
 * @handle: the handle of the device we are examining
@@ -688,6 +855,8 @@ fdd_out:
 static ssize_t show_docked(struct device *dev,
                           struct device_attribute *attr, char *buf)
 {
+        struct dock_station *dock_station = *((struct dock_station **)
+                dev->platform_data);
        return snprintf(buf, PAGE_SIZE, "%d\n", dock_present(dock_station));
 }
@@ -699,6 +868,8 @@ static DEVICE_ATTR(docked, S_IRUGO, show_docked, NULL);
 static ssize_t show_flags(struct device *dev,
                          struct device_attribute *attr, char *buf)
 {
+        struct dock_station *dock_station = *((struct dock_station **)
+                dev->platform_data);
        return snprintf(buf, PAGE_SIZE, "%d\n", dock_station->flags);
 }
@@ -711,6 +882,8 @@ static ssize_t write_undock(struct device *dev, struct device_attribute *attr,
                           const char *buf, size_t count)
 {
        int ret;
+        struct dock_station *dock_station = *((struct dock_station **)
+                dev->platform_data);
        if (!count)
                return -EINVAL;
@@ -728,6 +901,8 @@ static ssize_t show_dock_uid(struct device *dev,
                             struct device_attribute *attr, char *buf)
 {
        unsigned long lbuf;
+        struct dock_station *dock_station = *((struct dock_station **)
+                dev->platform_data);
        acpi_status status = acpi_evaluate_integer(dock_station->handle,
                                        "_UID", NULL, &lbuf);
        if (ACPI_FAILURE(status))
@@ -737,6 +912,26 @@ static ssize_t show_dock_uid(struct device *dev,
 }
 static DEVICE_ATTR(uid, S_IRUGO, show_dock_uid, NULL);
+static ssize_t show_dock_type(struct device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        struct dock_station *dock_station = *((struct dock_station **)
+                dev->platform_data);
+        char *type;
+        if (dock_station->flags & DOCK_IS_DOCK)
+                type = "dock_station";
+        else if (dock_station->flags & DOCK_IS_ATA)
+                type = "ata_bay";
+        else if (dock_station->flags & DOCK_IS_BAT)
+                type = "battery_bay";
+        else
+                type = "unknown";
+        return snprintf(buf, PAGE_SIZE, "%s\n", type);
+}
+static DEVICE_ATTR(type, S_IRUGO, show_dock_type, NULL);
 /**
 * dock_add - add a new dock station
 * @handle: the dock station handle
@@ -747,8 +942,9 @@ static DEVICE_ATTR(uid, S_IRUGO, show_dock_uid, NULL);
 static int dock_add(acpi_handle handle)
 {
        int ret;
-        acpi_status status;
        struct dock_dependent_device *dd;
+        struct dock_station *dock_station;
+        struct platform_device *dock_device;
        /* allocate & initialize the dock_station private data */
        dock_station = kzalloc(sizeof(*dock_station), GFP_KERNEL);
@@ -758,22 +954,34 @@ static int dock_add(acpi_handle handle)
        dock_station->last_dock_time = jiffies - HZ;
        INIT_LIST_HEAD(&dock_station->dependent_devices);
        INIT_LIST_HEAD(&dock_station->hotplug_devices);
+        INIT_LIST_HEAD(&dock_station->sibiling);
        spin_lock_init(&dock_station->dd_lock);
        mutex_init(&dock_station->hp_lock);
        ATOMIC_INIT_NOTIFIER_HEAD(&dock_notifier_list);
        /* initialize platform device stuff */
-        dock_device =
+        dock_station->dock_device =
-                platform_device_register_simple(dock_device_name, 0, NULL, 0);
+                platform_device_register_simple(dock_device_name,
+                        dock_station_count, NULL, 0);
+        dock_device = dock_station->dock_device;
        if (IS_ERR(dock_device)) {
                kfree(dock_station);
                dock_station = NULL;
                return PTR_ERR(dock_device);
        }
+        platform_device_add_data(dock_device, &dock_station,
+                sizeof(struct dock_station *));
        /* we want the dock device to send uevents */
        dock_device->dev.uevent_suppress = 0;
+        if (is_dock(handle))
+                dock_station->flags |= DOCK_IS_DOCK;
+        if (is_ata(handle))
+                dock_station->flags |= DOCK_IS_ATA;
+        if (is_battery(handle))
+                dock_station->flags |= DOCK_IS_BAT;
        ret = device_create_file(&dock_device->dev, &dev_attr_docked);
        if (ret) {
                printk("Error %d adding sysfs file\n", ret);
@@ -812,6 +1020,9 @@ static int dock_add(acpi_handle handle)
                dock_station = NULL;
                return ret;
        }
+        ret = device_create_file(&dock_device->dev, &dev_attr_type);
+        if (ret)
+                printk(KERN_ERR"Error %d adding sysfs file\n", ret);
        /* Find dependent devices */
        acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
@@ -828,24 +1039,12 @@ static int dock_add(acpi_handle handle)
        }
        add_dock_dependent_device(dock_station, dd);
-        /* register for dock events */
+        dock_station_count++;
-        status = acpi_install_notify_handler(dock_station->handle,
+        list_add(&dock_station->sibiling, &dock_stations);
-                                             ACPI_SYSTEM_NOTIFY,
-                                             dock_notify, dock_station);
-        if (ACPI_FAILURE(status)) {
-                printk(KERN_ERR PREFIX "Error installing notify handler\n");
-                ret = -ENODEV;
-                goto dock_add_err;
-        }
-        printk(KERN_INFO PREFIX "%s\n", ACPI_DOCK_DRIVER_DESCRIPTION);
        return 0;
-dock_add_err:
-        kfree(dd);
 dock_add_err_unregister:
+        device_remove_file(&dock_device->dev, &dev_attr_type);
        device_remove_file(&dock_device->dev, &dev_attr_docked);
        device_remove_file(&dock_device->dev, &dev_attr_undock);
        device_remove_file(&dock_device->dev, &dev_attr_uid);
@@ -859,12 +1058,12 @@ dock_add_err_unregister:
 /**
 * dock_remove - free up resources related to the dock station
 */
-static int dock_remove(void)
+static int dock_remove(struct dock_station *dock_station)
 {
        struct dock_dependent_device *dd, *tmp;
-        acpi_status status;
+        struct platform_device *dock_device = dock_station->dock_device;
-        if (!dock_station)
+        if (!dock_station_count)
                return 0;
        /* remove dependent devices */
@@ -872,14 +1071,8 @@ static int dock_remove(void)
                                 list)
            kfree(dd);
-        /* remove dock notify handler */
-        status = acpi_remove_notify_handler(dock_station->handle,
-                                            ACPI_SYSTEM_NOTIFY,
-                                            dock_notify);
-        if (ACPI_FAILURE(status))
-                printk(KERN_ERR "Error removing notify handler\n");
        /* cleanup sysfs */
+        device_remove_file(&dock_device->dev, &dev_attr_type);
        device_remove_file(&dock_device->dev, &dev_attr_docked);
        device_remove_file(&dock_device->dev, &dev_attr_undock);
        device_remove_file(&dock_device->dev, &dev_attr_uid);
@@ -904,41 +1097,60 @@ static int dock_remove(void)
 static acpi_status
 find_dock(acpi_handle handle, u32 lvl, void *context, void **rv)
 {
-        int *count = context;
        acpi_status status = AE_OK;
        if (is_dock(handle)) {
                if (dock_add(handle) >= 0) {
-                        (*count)++;
                        status = AE_CTRL_TERMINATE;
                }
        }
        return status;
 }
-static int __init dock_init(void)
+static acpi_status
+find_bay(acpi_handle handle, u32 lvl, void *context, void **rv)
 {
-        int num = 0;
+        /* If bay is a dock, it's already handled */
+        if (is_ejectable_bay(handle) && !is_dock(handle))
-        dock_station = NULL;
+                dock_add(handle);
+        return AE_OK;
+}
+static int __init dock_init(void)
+{
        if (acpi_disabled)
                return 0;
        /* look for a dock station */
        acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
-                            ACPI_UINT32_MAX, find_dock, &num, NULL);
+                            ACPI_UINT32_MAX, find_dock, NULL, NULL);
-        if (!num)
+        /* look for bay */
-                printk(KERN_INFO "No dock devices found.\n");
+        acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
+                        ACPI_UINT32_MAX, find_bay, NULL, NULL);
+        if (!dock_station_count) {
+                printk(KERN_INFO PREFIX "No dock devices found.\n");
+                return 0;
+        }
+        register_acpi_bus_notifier(&dock_acpi_notifier);
+        printk(KERN_INFO PREFIX "%s: %d docks/bays found\n",
+                ACPI_DOCK_DRIVER_DESCRIPTION, dock_station_count);
        return 0;
 }
 static void __exit dock_exit(void)
 {
-        dock_remove();
+        struct dock_station *dock_station;
+        unregister_acpi_bus_notifier(&dock_acpi_notifier);
+        list_for_each_entry(dock_station, &dock_stations, sibiling)
+                dock_remove(dock_station);
 }
-postcore_initcall(dock_init);
+/*
+ * Must be called before drivers of devices in dock, otherwise we can't know
+ * which devices are in a dock
+ */
+subsys_initcall(dock_init);
 module_exit(dock_exit);
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 13593f9f2197..40fefba6264e 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -1,7 +1,7 @@
 /*
- *  ec.c - ACPI Embedded Controller Driver (v2.0)
+ *  ec.c - ACPI Embedded Controller Driver (v2.1)
 *
- *  Copyright (C) 2006, 2007 Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
+ *  Copyright (C) 2006-2008 Alexey Starikovskiy <astarikovskiy@suse.de>
 *  Copyright (C) 2006 Denis Sadykov <denis.m.sadykov@intel.com>
 *  Copyright (C) 2004 Luming Yu <luming.yu@intel.com>
 *  Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
@@ -26,7 +26,7 @@
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
-/* Uncomment next line to get verbose print outs*/
+/* Uncomment next line to get verbose printout */
 /* #define DEBUG */
 #include <linux/kernel.h>
@@ -38,6 +38,7 @@
 #include <linux/seq_file.h>
 #include <linux/interrupt.h>
 #include <linux/list.h>
+#include <linux/spinlock.h>
 #include <asm/io.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
@@ -65,22 +66,21 @@ enum ec_command {
        ACPI_EC_COMMAND_QUERY = 0x84,
 };
-/* EC events */
-enum ec_event {
-        ACPI_EC_EVENT_OBF_1 = 1,        /* Output buffer full */
-        ACPI_EC_EVENT_IBF_0,            /* Input buffer empty */
-};
 #define ACPI_EC_DELAY           500     /* Wait 500ms max. during EC ops */
 #define ACPI_EC_UDELAY_GLK      1000    /* Wait 1ms max. to get global lock */
 #define ACPI_EC_UDELAY          100     /* Wait 100us before polling EC again */
+#define ACPI_EC_STORM_THRESHOLD 20      /* number of false interrupts
+                                           per one transaction */
 enum {
-        EC_FLAGS_WAIT_GPE = 0,          /* Don't check status until GPE arrives */
        EC_FLAGS_QUERY_PENDING,         /* Query is pending */
-        EC_FLAGS_GPE_MODE,              /* Expect GPE to be sent for status change */
+        EC_FLAGS_GPE_MODE,              /* Expect GPE to be sent
+                                         * for status change */
        EC_FLAGS_NO_GPE,                /* Don't use GPE mode */
-        EC_FLAGS_RESCHEDULE_POLL        /* Re-schedule poll */
+        EC_FLAGS_GPE_STORM,             /* GPE storm detected */
+        EC_FLAGS_HANDLERS_INSTALLED     /* Handlers for GPE and
+                                         * OpReg are installed */
 };
 /* If we find an EC via the ECDT, we need to keep a ptr to its context */
@@ -95,6 +95,15 @@ struct acpi_ec_query_handler {
        u8 query_bit;
 };
+struct transaction {
+        const u8 *wdata;
+        u8 *rdata;
+        unsigned short irq_count;
+        u8 command;
+        u8 wlen;
+        u8 rlen;
+};
 static struct acpi_ec {
        acpi_handle handle;
        unsigned long gpe;
@@ -105,9 +114,8 @@ static struct acpi_ec {
        struct mutex lock;
        wait_queue_head_t wait;
        struct list_head list;
-        struct delayed_work work;
+        struct transaction *curr;
-        atomic_t irq_count;
+        spinlock_t curr_lock;
-        u8 handlers_installed;
 } *boot_ec, *first_ec;
 /* 
@@ -150,7 +158,7 @@ static inline u8 acpi_ec_read_data(struct acpi_ec *ec)
 {
        u8 x = inb(ec->data_addr);
        pr_debug(PREFIX "---> data = 0x%2.2x\n", x);
-        return inb(ec->data_addr);
+        return x;
 }
 static inline void acpi_ec_write_cmd(struct acpi_ec *ec, u8 command)
@@ -165,158 +173,172 @@ static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data)
        outb(data, ec->data_addr);
 }
-static inline int acpi_ec_check_status(struct acpi_ec *ec, enum ec_event event)
+static int ec_transaction_done(struct acpi_ec *ec)
 {
-        if (test_bit(EC_FLAGS_WAIT_GPE, &ec->flags))
+        unsigned long flags;
-                return 0;
+        int ret = 0;
-        if (event == ACPI_EC_EVENT_OBF_1) {
+        spin_lock_irqsave(&ec->curr_lock, flags);
-                if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_OBF)
+        if (!ec->curr || (!ec->curr->wlen && !ec->curr->rlen))
-                        return 1;
+                ret = 1;
-        } else if (event == ACPI_EC_EVENT_IBF_0) {
+        spin_unlock_irqrestore(&ec->curr_lock, flags);
-                if (!(acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF))
+        return ret;
-                        return 1;
-        }
-        return 0;
 }
-static void ec_schedule_ec_poll(struct acpi_ec *ec)
+static void gpe_transaction(struct acpi_ec *ec, u8 status)
 {
-        if (test_bit(EC_FLAGS_RESCHEDULE_POLL, &ec->flags))
+        unsigned long flags;
-                schedule_delayed_work(&ec->work,
+        spin_lock_irqsave(&ec->curr_lock, flags);
-                                      msecs_to_jiffies(ACPI_EC_DELAY));
+        if (!ec->curr)
+                goto unlock;
+        if (ec->curr->wlen > 0) {
+                if ((status & ACPI_EC_FLAG_IBF) == 0) {
+                        acpi_ec_write_data(ec, *(ec->curr->wdata++));
+                        --ec->curr->wlen;
+                } else
+                        /* false interrupt, state didn't change */
+                        ++ec->curr->irq_count;
+        } else if (ec->curr->rlen > 0) {
+                if ((status & ACPI_EC_FLAG_OBF) == 1) {
+                        *(ec->curr->rdata++) = acpi_ec_read_data(ec);
+                        --ec->curr->rlen;
+                } else
+                        /* false interrupt, state didn't change */
+                        ++ec->curr->irq_count;
+        }
+unlock:
+        spin_unlock_irqrestore(&ec->curr_lock, flags);
 }
-static void ec_switch_to_poll_mode(struct acpi_ec *ec)
+static int acpi_ec_wait(struct acpi_ec *ec)
 {
+        if (wait_event_timeout(ec->wait, ec_transaction_done(ec),
+                               msecs_to_jiffies(ACPI_EC_DELAY)))
+                return 0;
+        /* missing GPEs, switch back to poll mode */
+        if (printk_ratelimit())
+                pr_info(PREFIX "missing confirmations, "
+                                "switch off interrupt mode.\n");
        set_bit(EC_FLAGS_NO_GPE, &ec->flags);
        clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);
-        acpi_disable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
+        return 1;
-        set_bit(EC_FLAGS_RESCHEDULE_POLL, &ec->flags);
 }
-static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
+static void acpi_ec_gpe_query(void *ec_cxt);
+static int ec_check_sci(struct acpi_ec *ec, u8 state)
 {
-        atomic_set(&ec->irq_count, 0);
+        if (state & ACPI_EC_FLAG_SCI) {
-        if (likely(test_bit(EC_FLAGS_GPE_MODE, &ec->flags)) &&
+                if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags))
-            likely(!force_poll)) {
+                        return acpi_os_execute(OSL_EC_BURST_HANDLER,
-                if (wait_event_timeout(ec->wait, acpi_ec_check_status(ec, event),
+                                acpi_ec_gpe_query, ec);
-                                       msecs_to_jiffies(ACPI_EC_DELAY)))
+        }
-                        return 0;
+        return 0;
-                clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
+}
-                if (acpi_ec_check_status(ec, event)) {
-                        /* missing GPEs, switch back to poll mode */
+static int ec_poll(struct acpi_ec *ec)
-                        if (printk_ratelimit())
+{
-                                pr_info(PREFIX "missing confirmations, "
+        unsigned long delay = jiffies + msecs_to_jiffies(ACPI_EC_DELAY);
-                                                "switch off interrupt mode.\n");
+        msleep(1);
-                        ec_switch_to_poll_mode(ec);
+        while (time_before(jiffies, delay)) {
-                        ec_schedule_ec_poll(ec);
+                gpe_transaction(ec, acpi_ec_read_status(ec));
-                        return 0;
+                msleep(1);
-                }
+                if (ec_transaction_done(ec))
-        } else {
-                unsigned long delay = jiffies + msecs_to_jiffies(ACPI_EC_DELAY);
-                clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
-                while (time_before(jiffies, delay)) {
-                        if (acpi_ec_check_status(ec, event))
-                                return 0;
-                        msleep(1);
-                }
-                if (acpi_ec_check_status(ec,event))
                        return 0;
        }
-        pr_err(PREFIX "acpi_ec_wait timeout, status = 0x%2.2x, event = %s\n",
-                acpi_ec_read_status(ec),
-                (event == ACPI_EC_EVENT_OBF_1) ? "\"b0=1\"" : "\"b1=0\"");
        return -ETIME;
 }
-static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, u8 command,
+static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
-                                        const u8 * wdata, unsigned wdata_len,
+                                        struct transaction *t,
-                                        u8 * rdata, unsigned rdata_len,
                                        int force_poll)
 {
-        int result = 0;
+        unsigned long tmp;
-        set_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
+        int ret = 0;
        pr_debug(PREFIX "transaction start\n");
-        acpi_ec_write_cmd(ec, command);
+        /* disable GPE during transaction if storm is detected */
-        for (; wdata_len > 0; --wdata_len) {
+        if (test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) {
-                result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0, force_poll);
+                clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);
-                if (result) {
+                acpi_disable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
-                        pr_err(PREFIX
-                               "write_cmd timeout, command = %d\n", command);
-                        goto end;
-                }
-                set_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
-                acpi_ec_write_data(ec, *(wdata++));
        }
+        /* start transaction */
-        if (!rdata_len) {
+        spin_lock_irqsave(&ec->curr_lock, tmp);
-                result = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0, force_poll);
+        /* following two actions should be kept atomic */
-                if (result) {
+        t->irq_count = 0;
-                        pr_err(PREFIX
+        ec->curr = t;
-                               "finish-write timeout, command = %d\n", command);
+        acpi_ec_write_cmd(ec, ec->curr->command);
-                        goto end;
+        if (ec->curr->command == ACPI_EC_COMMAND_QUERY)
-                }
-        } else if (command == ACPI_EC_COMMAND_QUERY)
                clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);
+        spin_unlock_irqrestore(&ec->curr_lock, tmp);
-        for (; rdata_len > 0; --rdata_len) {
+        /* if we selected poll mode or failed in GPE-mode do a poll loop */
-                result = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF_1, force_poll);
+        if (force_poll ||
-                if (result) {
+            !test_bit(EC_FLAGS_GPE_MODE, &ec->flags) ||
-                        pr_err(PREFIX "read timeout, command = %d\n", command);
+            acpi_ec_wait(ec))
-                        goto end;
+                ret = ec_poll(ec);
-                }
-                /* Don't expect GPE after last read */
-                if (rdata_len > 1)
-                        set_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
-                *(rdata++) = acpi_ec_read_data(ec);
-        }
-      end:
        pr_debug(PREFIX "transaction end\n");
-        return result;
+        spin_lock_irqsave(&ec->curr_lock, tmp);
+        ec->curr = NULL;
+        spin_unlock_irqrestore(&ec->curr_lock, tmp);
+        if (test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) {
+                /* check if we received SCI during transaction */
+                ec_check_sci(ec, acpi_ec_read_status(ec));
+                /* it is safe to enable GPE outside of transaction */
+                acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
+        } else if (test_bit(EC_FLAGS_GPE_MODE, &ec->flags) &&
+                   t->irq_count > ACPI_EC_STORM_THRESHOLD) {
+                pr_debug(PREFIX "GPE storm detected\n");
+                set_bit(EC_FLAGS_GPE_STORM, &ec->flags);
+        }
+        return ret;
+}
+static int ec_check_ibf0(struct acpi_ec *ec)
+{
+        u8 status = acpi_ec_read_status(ec);
+        return (status & ACPI_EC_FLAG_IBF) == 0;
 }
-static int acpi_ec_transaction(struct acpi_ec *ec, u8 command,
+static int ec_wait_ibf0(struct acpi_ec *ec)
-                               const u8 * wdata, unsigned wdata_len,
+{
-                               u8 * rdata, unsigned rdata_len,
+        unsigned long delay = jiffies + msecs_to_jiffies(ACPI_EC_DELAY);
+        /* interrupt wait manually if GPE mode is not active */
+        unsigned long timeout = test_bit(EC_FLAGS_GPE_MODE, &ec->flags) ?
+                msecs_to_jiffies(ACPI_EC_DELAY) : msecs_to_jiffies(1);
+        while (time_before(jiffies, delay))
+                if (wait_event_timeout(ec->wait, ec_check_ibf0(ec), timeout))
+                        return 0;
+        return -ETIME;
+}
+static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t,
                               int force_poll)
 {
        int status;
        u32 glk;
+        if (!ec || (!t) || (t->wlen && !t->wdata) || (t->rlen && !t->rdata))
-        if (!ec || (wdata_len && !wdata) || (rdata_len && !rdata))
                return -EINVAL;
+        if (t->rdata)
-        if (rdata)
+                memset(t->rdata, 0, t->rlen);
-                memset(rdata, 0, rdata_len);
        mutex_lock(&ec->lock);
        if (ec->global_lock) {
                status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
                if (ACPI_FAILURE(status)) {
-                        mutex_unlock(&ec->lock);
+                        status = -ENODEV;
-                        return -ENODEV;
+                        goto unlock;
                }
        }
+        if (ec_wait_ibf0(ec)) {
-        status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0, 0);
-        if (status) {
                pr_err(PREFIX "input buffer is not empty, "
                                "aborting transaction\n");
+                status = -ETIME;
                goto end;
        }
+        status = acpi_ec_transaction_unlocked(ec, t, force_poll);
-        status = acpi_ec_transaction_unlocked(ec, command,
+end:
-                                              wdata, wdata_len,
-                                              rdata, rdata_len,
-                                              force_poll);
-      end:
        if (ec->global_lock)
                acpi_release_global_lock(glk);
+unlock:
        mutex_unlock(&ec->lock);
        return status;
 }
@@ -327,21 +349,32 @@ static int acpi_ec_transaction(struct acpi_ec *ec, u8 command,
 int acpi_ec_burst_enable(struct acpi_ec *ec)
 {
        u8 d;
-        return acpi_ec_transaction(ec, ACPI_EC_BURST_ENABLE, NULL, 0, &d, 1, 0);
+        struct transaction t = {.command = ACPI_EC_BURST_ENABLE,
+                                .wdata = NULL, .rdata = &d,
+                                .wlen = 0, .rlen = 1};
+        return acpi_ec_transaction(ec, &t, 0);
 }
 int acpi_ec_burst_disable(struct acpi_ec *ec)
 {
-        return acpi_ec_transaction(ec, ACPI_EC_BURST_DISABLE, NULL, 0, NULL, 0, 0);
+        struct transaction t = {.command = ACPI_EC_BURST_DISABLE,
+                                .wdata = NULL, .rdata = NULL,
+                                .wlen = 0, .rlen = 0};
+        return (acpi_ec_read_status(ec) & ACPI_EC_FLAG_BURST) ?
+                                acpi_ec_transaction(ec, &t, 0) : 0;
 }
 static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 * data)
 {
        int result;
        u8 d;
+        struct transaction t = {.command = ACPI_EC_COMMAND_READ,
+                                .wdata = &address, .rdata = &d,
+                                .wlen = 1, .rlen = 1};
-        result = acpi_ec_transaction(ec, ACPI_EC_COMMAND_READ,
+        result = acpi_ec_transaction(ec, &t, 0);
-                                     &address, 1, &d, 1, 0);
        *data = d;
        return result;
 }
@@ -349,8 +382,11 @@ static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 * data)
 static int acpi_ec_write(struct acpi_ec *ec, u8 address, u8 data)
 {
        u8 wdata[2] = { address, data };
-        return acpi_ec_transaction(ec, ACPI_EC_COMMAND_WRITE,
+        struct transaction t = {.command = ACPI_EC_COMMAND_WRITE,
-                                   wdata, 2, NULL, 0, 0);
+                                .wdata = wdata, .rdata = NULL,
+                                .wlen = 2, .rlen = 0};
+        return acpi_ec_transaction(ec, &t, 0);
 }
 /*
@@ -412,12 +448,13 @@ int ec_transaction(u8 command,
                   u8 * rdata, unsigned rdata_len,
                   int force_poll)
 {
+        struct transaction t = {.command = command,
+                                .wdata = wdata, .rdata = rdata,
+                                .wlen = wdata_len, .rlen = rdata_len};
        if (!first_ec)
                return -ENODEV;
-        return acpi_ec_transaction(first_ec, command, wdata,
+        return acpi_ec_transaction(first_ec, &t, force_poll);
-                                   wdata_len, rdata, rdata_len,
-                                   force_poll);
 }
 EXPORT_SYMBOL(ec_transaction);
@@ -426,7 +463,9 @@ static int acpi_ec_query(struct acpi_ec *ec, u8 * data)
 {
        int result;
        u8 d;
+        struct transaction t = {.command = ACPI_EC_COMMAND_QUERY,
+                                .wdata = NULL, .rdata = &d,
+                                .wlen = 0, .rlen = 1};
        if (!ec || !data)
                return -EINVAL;
@@ -436,7 +475,7 @@ static int acpi_ec_query(struct acpi_ec *ec, u8 * data)
         * bit to be cleared (and thus clearing the interrupt source).
         */
-        result = acpi_ec_transaction(ec, ACPI_EC_COMMAND_QUERY, NULL, 0, &d, 1, 0);
+        result = acpi_ec_transaction(ec, &t, 0);
        if (result)
                return result;
@@ -513,46 +552,26 @@ static void acpi_ec_gpe_query(void *ec_cxt)
 static u32 acpi_ec_gpe_handler(void *data)
 {
-        acpi_status status = AE_OK;
        struct acpi_ec *ec = data;
-        u8 state = acpi_ec_read_status(ec);
+        u8 status;
        pr_debug(PREFIX "~~~> interrupt\n");
-        atomic_inc(&ec->irq_count);
+        status = acpi_ec_read_status(ec);
-        if (atomic_read(&ec->irq_count) > 5) {
-                pr_err(PREFIX "GPE storm detected, disabling EC GPE\n");
+        gpe_transaction(ec, status);
-                ec_switch_to_poll_mode(ec);
+        if (ec_transaction_done(ec) && (status & ACPI_EC_FLAG_IBF) == 0)
-                goto end;
-        }
-        clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
-        if (test_bit(EC_FLAGS_GPE_MODE, &ec->flags))
                wake_up(&ec->wait);
-        if (state & ACPI_EC_FLAG_SCI) {
+        ec_check_sci(ec, status);
-                if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags))
+        if (!test_bit(EC_FLAGS_GPE_MODE, &ec->flags) &&
-                        status = acpi_os_execute(OSL_EC_BURST_HANDLER,
+            !test_bit(EC_FLAGS_NO_GPE, &ec->flags)) {
-                                acpi_ec_gpe_query, ec);
-        } else if (!test_bit(EC_FLAGS_GPE_MODE, &ec->flags) &&
-                   !test_bit(EC_FLAGS_NO_GPE, &ec->flags) &&
-                   in_interrupt()) {
                /* this is non-query, must be confirmation */
                if (printk_ratelimit())
                        pr_info(PREFIX "non-query interrupt received,"
                                " switching to interrupt mode\n");
                set_bit(EC_FLAGS_GPE_MODE, &ec->flags);
-                clear_bit(EC_FLAGS_RESCHEDULE_POLL, &ec->flags);
        }
-end:
+        return ACPI_INTERRUPT_HANDLED;
-        ec_schedule_ec_poll(ec);
-        return ACPI_SUCCESS(status) ?
-            ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED;
-}
-static void do_ec_poll(struct work_struct *work)
-{
-        struct acpi_ec *ec = container_of(work, struct acpi_ec, work.work);
-        atomic_set(&ec->irq_count, 0);
-        (void)acpi_ec_gpe_handler(ec);
 }
 /* --------------------------------------------------------------------------
@@ -696,8 +715,7 @@ static struct acpi_ec *make_acpi_ec(void)
        mutex_init(&ec->lock);
        init_waitqueue_head(&ec->wait);
        INIT_LIST_HEAD(&ec->list);
-        INIT_DELAYED_WORK_DEFERRABLE(&ec->work, do_ec_poll);
+        spin_lock_init(&ec->curr_lock);
-        atomic_set(&ec->irq_count, 0);
        return ec;
 }
@@ -736,22 +754,15 @@ ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
        return AE_CTRL_TERMINATE;
 }
-static void ec_poll_stop(struct acpi_ec *ec)
-{
-        clear_bit(EC_FLAGS_RESCHEDULE_POLL, &ec->flags);
-        cancel_delayed_work(&ec->work);
-}
 static void ec_remove_handlers(struct acpi_ec *ec)
 {
-        ec_poll_stop(ec);
        if (ACPI_FAILURE(acpi_remove_address_space_handler(ec->handle,
                                ACPI_ADR_SPACE_EC, &acpi_ec_space_handler)))
                pr_err(PREFIX "failed to remove space handler\n");
        if (ACPI_FAILURE(acpi_remove_gpe_handler(NULL, ec->gpe,
                                &acpi_ec_gpe_handler)))
                pr_err(PREFIX "failed to remove gpe handler\n");
-        ec->handlers_installed = 0;
+        clear_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags);
 }
 static int acpi_ec_add(struct acpi_device *device)
@@ -788,7 +799,7 @@ static int acpi_ec_add(struct acpi_device *device)
        if (!first_ec)
                first_ec = ec;
-        acpi_driver_data(device) = ec;
+        device->driver_data = ec;
        acpi_ec_add_fs(device);
        pr_info(PREFIX "GPE = 0x%lx, I/O: command/status = 0x%lx, data = 0x%lx\n",
                          ec->gpe, ec->command_addr, ec->data_addr);
@@ -813,7 +824,7 @@ static int acpi_ec_remove(struct acpi_device *device, int type)
        }
        mutex_unlock(&ec->lock);
        acpi_ec_remove_fs(device);
-        acpi_driver_data(device) = NULL;
+        device->driver_data = NULL;
        if (ec == first_ec)
                first_ec = NULL;
        kfree(ec);
@@ -846,27 +857,36 @@ ec_parse_io_ports(struct acpi_resource *resource, void *context)
 static int ec_install_handlers(struct acpi_ec *ec)
 {
        acpi_status status;
-        if (ec->handlers_installed)
+        if (test_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags))
                return 0;
        status = acpi_install_gpe_handler(NULL, ec->gpe,
-                                          ACPI_GPE_EDGE_TRIGGERED,
+                                  ACPI_GPE_EDGE_TRIGGERED,
-                                          &acpi_ec_gpe_handler, ec);
+                                  &acpi_ec_gpe_handler, ec);
        if (ACPI_FAILURE(status))
                return -ENODEV;
        acpi_set_gpe_type(NULL, ec->gpe, ACPI_GPE_TYPE_RUNTIME);
        acpi_enable_gpe(NULL, ec->gpe, ACPI_NOT_ISR);
        status = acpi_install_address_space_handler(ec->handle,
                                                    ACPI_ADR_SPACE_EC,
                                                    &acpi_ec_space_handler,
                                                    NULL, ec);
        if (ACPI_FAILURE(status)) {
-                acpi_remove_gpe_handler(NULL, ec->gpe, &acpi_ec_gpe_handler);
+                if (status == AE_NOT_FOUND) {
-                return -ENODEV;
+                        /*
+                         * Maybe OS fails in evaluating the _REG object.
+                         * The AE_NOT_FOUND error will be ignored and OS
+                         * continue to initialize EC.
+                         */
+                        printk(KERN_ERR "Fail in evaluating the _REG object"
+                                " of EC device. Broken bios is suspected.\n");
+                } else {
+                        acpi_remove_gpe_handler(NULL, ec->gpe,
+                                &acpi_ec_gpe_handler);
+                        return -ENODEV;
+                }
        }
-        ec->handlers_installed = 1;
+        set_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags);
        return 0;
 }
@@ -887,7 +907,6 @@ static int acpi_ec_start(struct acpi_device *device)
        /* EC is fully operational, allow queries */
        clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);
-        ec_schedule_ec_poll(ec);
        return ret;
 }
@@ -906,7 +925,7 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
 int __init acpi_boot_ec_enable(void)
 {
-        if (!boot_ec || boot_ec->handlers_installed)
+        if (!boot_ec || test_bit(EC_FLAGS_HANDLERS_INSTALLED, &boot_ec->flags))
                return 0;
        if (!ec_install_handlers(boot_ec)) {
                first_ec = boot_ec;
diff --git a/drivers/acpi/executer/exconfig.c b/drivers/acpi/executer/exconfig.c
index 8892b9824fae..74da6fa52ef1 100644
--- a/drivers/acpi/executer/exconfig.c
+++ b/drivers/acpi/executer/exconfig.c
@@ -43,7 +43,6 @@
 #include <acpi/acpi.h>
 #include <acpi/acinterp.h>
-#include <acpi/amlcode.h>
 #include <acpi/acnamesp.h>
 #include <acpi/actables.h>
 #include <acpi/acdispat.h>
@@ -91,13 +90,12 @@ acpi_ex_add_table(u32 table_index,
        /* Init the table handle */
-        obj_desc->reference.opcode = AML_LOAD_OP;
+        obj_desc->reference.class = ACPI_REFCLASS_TABLE;
        *ddb_handle = obj_desc;
        /* Install the new table into the local data structures */
-        obj_desc->reference.object = ACPI_CAST_PTR(void,
+        obj_desc->reference.value = table_index;
-                        (unsigned long)table_index);
        /* Add the table to the namespace */
@@ -280,6 +278,7 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc,
                struct acpi_walk_state *walk_state)
 {
        union acpi_operand_object *ddb_handle;
+        struct acpi_table_header *table;
        struct acpi_table_desc table_desc;
        u32 table_index;
        acpi_status status;
@@ -294,9 +293,8 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc,
        switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
        case ACPI_TYPE_REGION:
-                ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Load from Region %p %s\n",
+                ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
-                                  obj_desc,
+                                  "Load table from Region %p\n", obj_desc));
-                                  acpi_ut_get_object_type_name(obj_desc)));
                /* Region must be system_memory (from ACPI spec) */
@@ -316,61 +314,112 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc,
                }
                /*
-                 * We will simply map the memory region for the table. However, the
+                 * Map the table header and get the actual table length. The region
-                 * memory region is technically not guaranteed to remain stable and
+                 * length is not guaranteed to be the same as the table length.
-                 * we may eventually have to copy the table to a local buffer.
+                 */
+                table = acpi_os_map_memory(obj_desc->region.address,
+                                           sizeof(struct acpi_table_header));
+                if (!table) {
+                        return_ACPI_STATUS(AE_NO_MEMORY);
+                }
+                length = table->length;
+                acpi_os_unmap_memory(table, sizeof(struct acpi_table_header));
+                /* Must have at least an ACPI table header */
+                if (length < sizeof(struct acpi_table_header)) {
+                        return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH);
+                }
+                /*
+                 * The memory region is not guaranteed to remain stable and we must
+                 * copy the table to a local buffer. For example, the memory region
+                 * is corrupted after suspend on some machines. Dynamically loaded
+                 * tables are usually small, so this overhead is minimal.
                 */
+                /* Allocate a buffer for the table */
+                table_desc.pointer = ACPI_ALLOCATE(length);
+                if (!table_desc.pointer) {
+                        return_ACPI_STATUS(AE_NO_MEMORY);
+                }
+                /* Map the entire table and copy it */
+                table = acpi_os_map_memory(obj_desc->region.address, length);
+                if (!table) {
+                        ACPI_FREE(table_desc.pointer);
+                        return_ACPI_STATUS(AE_NO_MEMORY);
+                }
+                ACPI_MEMCPY(table_desc.pointer, table, length);
+                acpi_os_unmap_memory(table, length);
                table_desc.address = obj_desc->region.address;
-                table_desc.length = obj_desc->region.length;
-                table_desc.flags = ACPI_TABLE_ORIGIN_MAPPED;
                break;
        case ACPI_TYPE_BUFFER:  /* Buffer or resolved region_field */
                ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
-                                  "Load from Buffer or Field %p %s\n", obj_desc,
+                                  "Load table from Buffer or Field %p\n",
-                                  acpi_ut_get_object_type_name(obj_desc)));
+                                  obj_desc));
-                length = obj_desc->buffer.length;
                /* Must have at least an ACPI table header */
-                if (length < sizeof(struct acpi_table_header)) {
+                if (obj_desc->buffer.length < sizeof(struct acpi_table_header)) {
                        return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH);
                }
-                /* Validate checksum here. It won't get validated in tb_add_table */
+                /* Get the actual table length from the table header */
-                status =
+                table =
-                    acpi_tb_verify_checksum(ACPI_CAST_PTR
+                    ACPI_CAST_PTR(struct acpi_table_header,
-                                            (struct acpi_table_header,
+                                  obj_desc->buffer.pointer);
-                                             obj_desc->buffer.pointer), length);
+                length = table->length;
-                if (ACPI_FAILURE(status)) {
-                        return_ACPI_STATUS(status);
+                /* Table cannot extend beyond the buffer */
+                if (length > obj_desc->buffer.length) {
+                        return_ACPI_STATUS(AE_AML_BUFFER_LIMIT);
+                }
+                if (length < sizeof(struct acpi_table_header)) {
+                        return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH);
                }
                /*
-                 * We need to copy the buffer since the original buffer could be
+                 * Copy the table from the buffer because the buffer could be modified
-                 * changed or deleted in the future
+                 * or even deleted in the future
                 */
                table_desc.pointer = ACPI_ALLOCATE(length);
                if (!table_desc.pointer) {
                        return_ACPI_STATUS(AE_NO_MEMORY);
                }
-                ACPI_MEMCPY(table_desc.pointer, obj_desc->buffer.pointer,
+                ACPI_MEMCPY(table_desc.pointer, table, length);
-                            length);
+                table_desc.address = ACPI_TO_INTEGER(table_desc.pointer);
-                table_desc.length = length;
-                table_desc.flags = ACPI_TABLE_ORIGIN_ALLOCATED;
                break;
        default:
                return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
        }
-        /*
+        /* Validate table checksum (will not get validated in tb_add_table) */
-         * Install the new table into the local data structures
-         */
+        status = acpi_tb_verify_checksum(table_desc.pointer, length);
+        if (ACPI_FAILURE(status)) {
+                ACPI_FREE(table_desc.pointer);
+                return_ACPI_STATUS(status);
+        }
+        /* Complete the table descriptor */
+        table_desc.length = length;
+        table_desc.flags = ACPI_TABLE_ORIGIN_ALLOCATED;
+        /* Install the new table into the local data structures */
        status = acpi_tb_add_table(&table_desc, &table_index);
        if (ACPI_FAILURE(status)) {
                goto cleanup;
@@ -379,7 +428,7 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc,
        /*
         * Add the table to the namespace.
         *
-         * Note: We load the table objects relative to the root of the namespace.
+         * Note: Load the table objects relative to the root of the namespace.
         * This appears to go against the ACPI specification, but we do it for
         * compatibility with other ACPI implementations.
         */
@@ -415,7 +464,7 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc,
      cleanup:
        if (ACPI_FAILURE(status)) {
-                /* Delete allocated buffer or mapping */
+                /* Delete allocated table buffer */
                acpi_tb_delete_table(&table_desc);
        }
@@ -455,9 +504,9 @@ acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle)
                return_ACPI_STATUS(AE_BAD_PARAMETER);
        }
-        /* Get the table index from the ddb_handle (acpi_size for 64-bit case) */
+        /* Get the table index from the ddb_handle */
-        table_index = (u32) (acpi_size) table_desc->reference.object;
+        table_index = table_desc->reference.value;
        /* Invoke table handler if present */
diff --git a/drivers/acpi/executer/exconvrt.c b/drivers/acpi/executer/exconvrt.c
index 261d97516d9b..1d1f35adddde 100644
--- a/drivers/acpi/executer/exconvrt.c
+++ b/drivers/acpi/executer/exconvrt.c
@@ -57,7 +57,7 @@ acpi_ex_convert_to_ascii(acpi_integer integer,
 *
 * FUNCTION:    acpi_ex_convert_to_integer
 *
- * PARAMETERS:  obj_desc        - Object to be converted.  Must be an
+ * PARAMETERS:  obj_desc        - Object to be converted. Must be an
 *                                Integer, Buffer, or String
 *              result_desc     - Where the new Integer object is returned
 *              Flags           - Used for string conversion
@@ -103,7 +103,7 @@ acpi_ex_convert_to_integer(union acpi_operand_object *obj_desc,
        }
        /*
-         * Convert the buffer/string to an integer.  Note that both buffers and
+         * Convert the buffer/string to an integer. Note that both buffers and
         * strings are treated as raw data - we don't convert ascii to hex for
         * strings.
         *
@@ -120,7 +120,7 @@ acpi_ex_convert_to_integer(union acpi_operand_object *obj_desc,
                /*
                 * Convert string to an integer - for most cases, the string must be
-                 * hexadecimal as per the ACPI specification.  The only exception (as
+                 * hexadecimal as per the ACPI specification. The only exception (as
                 * of ACPI 3.0) is that the to_integer() operator allows both decimal
                 * and hexadecimal strings (hex prefixed with "0x").
                 */
@@ -159,6 +159,7 @@ acpi_ex_convert_to_integer(union acpi_operand_object *obj_desc,
                break;
        default:
                /* No other types can get here */
                break;
        }
@@ -185,7 +186,7 @@ acpi_ex_convert_to_integer(union acpi_operand_object *obj_desc,
 *
 * FUNCTION:    acpi_ex_convert_to_buffer
 *
- * PARAMETERS:  obj_desc        - Object to be converted.  Must be an
+ * PARAMETERS:  obj_desc        - Object to be converted. Must be an
 *                                Integer, Buffer, or String
 *              result_desc     - Where the new buffer object is returned
 *
@@ -365,7 +366,7 @@ acpi_ex_convert_to_ascii(acpi_integer integer,
        }
        /*
-         * Since leading zeros are supressed, we must check for the case where
+         * Since leading zeros are suppressed, we must check for the case where
         * the integer equals 0
         *
         * Finally, null terminate the string and return the length
@@ -383,7 +384,7 @@ acpi_ex_convert_to_ascii(acpi_integer integer,
 *
 * FUNCTION:    acpi_ex_convert_to_string
 *
- * PARAMETERS:  obj_desc        - Object to be converted.  Must be an
+ * PARAMETERS:  obj_desc        - Object to be converted. Must be an
 *                                Integer, Buffer, or String
 *              result_desc     - Where the string object is returned
 *              Type            - String flags (base and conversion type)
@@ -472,7 +473,7 @@ acpi_ex_convert_to_string(union acpi_operand_object * obj_desc,
                        base = 10;
                        /*
-                         * Calculate the final string length.  Individual string values
+                         * Calculate the final string length. Individual string values
                         * are variable length (include separator for each)
                         */
                        for (i = 0; i < obj_desc->buffer.length; i++) {
@@ -511,9 +512,14 @@ acpi_ex_convert_to_string(union acpi_operand_object * obj_desc,
                /*
                 * Create a new string object and string buffer
                 * (-1 because of extra separator included in string_length from above)
+                 * Allow creation of zero-length strings from zero-length buffers.
                 */
+                if (string_length) {
+                        string_length--;
+                }
                return_desc = acpi_ut_create_string_object((acpi_size)
-                                                           (string_length - 1));
+                                                           string_length);
                if (!return_desc) {
                        return_ACPI_STATUS(AE_NO_MEMORY);
                }
@@ -536,7 +542,9 @@ acpi_ex_convert_to_string(union acpi_operand_object * obj_desc,
                 * Null terminate the string
                 * (overwrites final comma/space from above)
                 */
-                new_buf--;
+                if (obj_desc->buffer.length) {
+                        new_buf--;
+                }
                *new_buf = 0;
                break;
@@ -617,7 +625,7 @@ acpi_ex_convert_to_target_type(acpi_object_type destination_type,
                case ACPI_TYPE_LOCAL_BANK_FIELD:
                case ACPI_TYPE_LOCAL_INDEX_FIELD:
                        /*
-                         * These types require an Integer operand.  We can convert
+                         * These types require an Integer operand. We can convert
                         * a Buffer or a String to an Integer if necessary.
                         */
                        status =
@@ -627,7 +635,7 @@ acpi_ex_convert_to_target_type(acpi_object_type destination_type,
                case ACPI_TYPE_STRING:
                        /*
-                         * The operand must be a String.  We can convert an
+                         * The operand must be a String. We can convert an
                         * Integer or Buffer if necessary
                         */
                        status =
@@ -637,7 +645,7 @@ acpi_ex_convert_to_target_type(acpi_object_type destination_type,
                case ACPI_TYPE_BUFFER:
                        /*
-                         * The operand must be a Buffer.  We can convert an
+                         * The operand must be a Buffer. We can convert an
                         * Integer or String if necessary
                         */
                        status =
diff --git a/drivers/acpi/executer/exdump.c b/drivers/acpi/executer/exdump.c
index 2be2e2bf95bf..d087a7d28aa5 100644
--- a/drivers/acpi/executer/exdump.c
+++ b/drivers/acpi/executer/exdump.c
@@ -45,7 +45,6 @@
 #include <acpi/acinterp.h>
 #include <acpi/amlcode.h>
 #include <acpi/acnamesp.h>
-#include <acpi/acparser.h>
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exdump")
@@ -214,10 +213,11 @@ static struct acpi_exdump_info acpi_ex_dump_index_field[5] = {
        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(index_field.data_obj), "Data Object"}
 };
-static struct acpi_exdump_info acpi_ex_dump_reference[7] = {
+static struct acpi_exdump_info acpi_ex_dump_reference[8] = {
        {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_reference), NULL},
+        {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(reference.class), "Class"},
        {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(reference.target_type), "Target Type"},
-        {ACPI_EXD_UINT32, ACPI_EXD_OFFSET(reference.offset), "Offset"},
+        {ACPI_EXD_UINT32, ACPI_EXD_OFFSET(reference.value), "Value"},
        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(reference.object), "Object Desc"},
        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(reference.node), "Node"},
        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(reference.where), "Where"},
@@ -413,10 +413,10 @@ acpi_ex_dump_object(union acpi_operand_object *obj_desc,
                case ACPI_EXD_REFERENCE:
-                        acpi_ex_out_string("Opcode",
+                        acpi_ex_out_string("Class Name",
-                                           (acpi_ps_get_opcode_info
+                                           (char *)
-                                            (obj_desc->reference.opcode))->
+                                           acpi_ut_get_reference_name
-                                           name);
+                                           (obj_desc));
                        acpi_ex_dump_reference_obj(obj_desc);
                        break;
@@ -494,40 +494,41 @@ void acpi_ex_dump_operand(union acpi_operand_object *obj_desc, u32 depth)
        switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
        case ACPI_TYPE_LOCAL_REFERENCE:
-                switch (obj_desc->reference.opcode) {
+                acpi_os_printf("Reference: [%s] ",
-                case AML_DEBUG_OP:
+                               acpi_ut_get_reference_name(obj_desc));
+                switch (obj_desc->reference.class) {
+                case ACPI_REFCLASS_DEBUG:
-                        acpi_os_printf("Reference: Debug\n");
+                        acpi_os_printf("\n");
                        break;
-                case AML_INDEX_OP:
+                case ACPI_REFCLASS_INDEX:
-                        acpi_os_printf("Reference: Index %p\n",
+                        acpi_os_printf("%p\n", obj_desc->reference.object);
-                                       obj_desc->reference.object);
                        break;
-                case AML_LOAD_OP:
+                case ACPI_REFCLASS_TABLE:
-                        acpi_os_printf("Reference: [DdbHandle] TableIndex %p\n",
+                        acpi_os_printf("Table Index %X\n",
-                                       obj_desc->reference.object);
+                                       obj_desc->reference.value);
                        break;
-                case AML_REF_OF_OP:
+                case ACPI_REFCLASS_REFOF:
-                        acpi_os_printf("Reference: (RefOf) %p [%s]\n",
+                        acpi_os_printf("%p [%s]\n", obj_desc->reference.object,
-                                       obj_desc->reference.object,
                                       acpi_ut_get_type_name(((union
                                                               acpi_operand_object
-                                                               *)obj_desc->
+                                                               *)
+                                                              obj_desc->
                                                              reference.
                                                              object)->common.
                                                             type));
                        break;
-                case AML_ARG_OP:
+                case ACPI_REFCLASS_ARG:
-                        acpi_os_printf("Reference: Arg%d",
+                        acpi_os_printf("%X", obj_desc->reference.value);
-                                       obj_desc->reference.offset);
                        if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) {
@@ -542,10 +543,9 @@ void acpi_ex_dump_operand(union acpi_operand_object *obj_desc, u32 depth)
                        acpi_os_printf("\n");
                        break;
-                case AML_LOCAL_OP:
+                case ACPI_REFCLASS_LOCAL:
-                        acpi_os_printf("Reference: Local%d",
+                        acpi_os_printf("%X", obj_desc->reference.value);
-                                       obj_desc->reference.offset);
                        if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) {
@@ -560,21 +560,16 @@ void acpi_ex_dump_operand(union acpi_operand_object *obj_desc, u32 depth)
                        acpi_os_printf("\n");
                        break;
-                case AML_INT_NAMEPATH_OP:
+                case ACPI_REFCLASS_NAME:
-                        acpi_os_printf("Reference: Namepath %X [%4.4s]\n",
+                        acpi_os_printf("- [%4.4s]\n",
-                                       obj_desc->reference.node->name.integer,
                                       obj_desc->reference.node->name.ascii);
                        break;
-                default:
+                default:        /* Unknown reference class */
-                        /* Unknown opcode */
-                        acpi_os_printf("Unknown Reference opcode=%X\n",
+                        acpi_os_printf("%2.2X\n", obj_desc->reference.class);
-                                       obj_desc->reference.opcode);
                        break;
                }
                break;
@@ -865,8 +860,8 @@ static void acpi_ex_dump_reference_obj(union acpi_operand_object *obj_desc)
        ret_buf.length = ACPI_ALLOCATE_LOCAL_BUFFER;
-        if (obj_desc->reference.opcode == AML_INT_NAMEPATH_OP) {
+        if (obj_desc->reference.class == ACPI_REFCLASS_NAME) {
-                acpi_os_printf(" Named Object %p ", obj_desc->reference.node);
+                acpi_os_printf(" %p ", obj_desc->reference.node);
                status =
                    acpi_ns_handle_to_pathname(obj_desc->reference.node,
@@ -882,14 +877,12 @@ static void acpi_ex_dump_reference_obj(union acpi_operand_object *obj_desc)
                    ACPI_DESC_TYPE_OPERAND) {
                        acpi_os_printf(" Target: %p",
                                       obj_desc->reference.object);
-                        if (obj_desc->reference.opcode == AML_LOAD_OP) {
+                        if (obj_desc->reference.class == ACPI_REFCLASS_TABLE) {
-                                /*
+                                acpi_os_printf(" Table Index: %X\n",
-                                 * For DDBHandle reference,
+                                               obj_desc->reference.value);
-                                 * obj_desc->Reference.Object is the table index
-                                 */
-                                acpi_os_printf(" [DDBHandle]\n");
                        } else {
-                                acpi_os_printf(" [%s]\n",
+                                acpi_os_printf(" Target: %p [%s]\n",
+                                               obj_desc->reference.object,
                                               acpi_ut_get_type_name(((union
                                                                       acpi_operand_object
                                                                       *)
@@ -988,9 +981,9 @@ acpi_ex_dump_package_obj(union acpi_operand_object *obj_desc,
        case ACPI_TYPE_LOCAL_REFERENCE:
-                acpi_os_printf("[Object Reference] %s",
+                acpi_os_printf("[Object Reference] Type [%s] %2.2X",
-                               (acpi_ps_get_opcode_info
+                               acpi_ut_get_reference_name(obj_desc),
-                                (obj_desc->reference.opcode))->name);
+                               obj_desc->reference.class);
                acpi_ex_dump_reference_obj(obj_desc);
                break;
diff --git a/drivers/acpi/executer/exmisc.c b/drivers/acpi/executer/exmisc.c
index 731414a581a6..efb191340059 100644
--- a/drivers/acpi/executer/exmisc.c
+++ b/drivers/acpi/executer/exmisc.c
@@ -86,10 +86,10 @@ acpi_ex_get_object_reference(union acpi_operand_object *obj_desc,
                /*
                 * Must be a reference to a Local or Arg
                 */
-                switch (obj_desc->reference.opcode) {
+                switch (obj_desc->reference.class) {
-                case AML_LOCAL_OP:
+                case ACPI_REFCLASS_LOCAL:
-                case AML_ARG_OP:
+                case ACPI_REFCLASS_ARG:
-                case AML_DEBUG_OP:
+                case ACPI_REFCLASS_DEBUG:
                        /* The referenced object is the pseudo-node for the local/arg */
@@ -98,8 +98,8 @@ acpi_ex_get_object_reference(union acpi_operand_object *obj_desc,
                default:
-                        ACPI_ERROR((AE_INFO, "Unknown Reference opcode %X",
+                        ACPI_ERROR((AE_INFO, "Unknown Reference Class %2.2X",
-                                    obj_desc->reference.opcode));
+                                    obj_desc->reference.class));
                        return_ACPI_STATUS(AE_AML_INTERNAL);
                }
                break;
@@ -127,7 +127,7 @@ acpi_ex_get_object_reference(union acpi_operand_object *obj_desc,
                return_ACPI_STATUS(AE_NO_MEMORY);
        }
-        reference_obj->reference.opcode = AML_REF_OF_OP;
+        reference_obj->reference.class = ACPI_REFCLASS_REFOF;
        reference_obj->reference.object = referenced_obj;
        *return_desc = reference_obj;
diff --git a/drivers/acpi/executer/exoparg1.c b/drivers/acpi/executer/exoparg1.c
index 7c3bea575e02..f622f9eac8a1 100644
--- a/drivers/acpi/executer/exoparg1.c
+++ b/drivers/acpi/executer/exoparg1.c
@@ -825,16 +825,16 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
                                 *
                                 * Must resolve/dereference the local/arg reference first
                                 */
-                                switch (operand[0]->reference.opcode) {
+                                switch (operand[0]->reference.class) {
-                                case AML_LOCAL_OP:
+                                case ACPI_REFCLASS_LOCAL:
-                                case AML_ARG_OP:
+                                case ACPI_REFCLASS_ARG:
                                        /* Set Operand[0] to the value of the local/arg */
                                        status =
                                            acpi_ds_method_data_get_value
-                                            (operand[0]->reference.opcode,
+                                            (operand[0]->reference.class,
-                                             operand[0]->reference.offset,
+                                             operand[0]->reference.value,
                                             walk_state, &temp_desc);
                                        if (ACPI_FAILURE(status)) {
                                                goto cleanup;
@@ -848,7 +848,7 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
                                        operand[0] = temp_desc;
                                        break;
-                                case AML_REF_OF_OP:
+                                case ACPI_REFCLASS_REFOF:
                                        /* Get the object to which the reference refers */
@@ -928,8 +928,8 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
                         * This must be a reference object produced by either the
                         * Index() or ref_of() operator
                         */
-                        switch (operand[0]->reference.opcode) {
+                        switch (operand[0]->reference.class) {
-                        case AML_INDEX_OP:
+                        case ACPI_REFCLASS_INDEX:
                                /*
                                 * The target type for the Index operator must be
@@ -965,7 +965,7 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
                                        return_desc->integer.value =
                                            temp_desc->buffer.
                                            pointer[operand[0]->reference.
-                                                    offset];
+                                                    value];
                                        break;
                                case ACPI_TYPE_PACKAGE:
@@ -985,7 +985,7 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
                                default:
                                        ACPI_ERROR((AE_INFO,
-                                                    "Unknown Index TargetType %X in obj %p",
+                                                    "Unknown Index TargetType %X in reference object %p",
                                                    operand[0]->reference.
                                                    target_type, operand[0]));
                                        status = AE_AML_OPERAND_TYPE;
@@ -993,7 +993,7 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
                                }
                                break;
-                        case AML_REF_OF_OP:
+                        case ACPI_REFCLASS_REFOF:
                                return_desc = operand[0]->reference.object;
@@ -1013,9 +1013,9 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
                        default:
                                ACPI_ERROR((AE_INFO,
-                                            "Unknown opcode in reference(%p) - %X",
+                                            "Unknown class in reference(%p) - %2.2X",
                                            operand[0],
-                                            operand[0]->reference.opcode));
+                                            operand[0]->reference.class));
                                status = AE_TYPE;
                                goto cleanup;
diff --git a/drivers/acpi/executer/exoparg2.c b/drivers/acpi/executer/exoparg2.c
index 8e8bbb6ccebd..368def5dffce 100644
--- a/drivers/acpi/executer/exoparg2.c
+++ b/drivers/acpi/executer/exoparg2.c
@@ -391,8 +391,8 @@ acpi_status acpi_ex_opcode_2A_1T_1R(struct acpi_walk_state *walk_state)
                /* Initialize the Index reference object */
                index = operand[1]->integer.value;
-                return_desc->reference.offset = (u32) index;
+                return_desc->reference.value = (u32) index;
-                return_desc->reference.opcode = AML_INDEX_OP;
+                return_desc->reference.class = ACPI_REFCLASS_INDEX;
                /*
                 * At this point, the Source operand is a String, Buffer, or Package.
diff --git a/drivers/acpi/executer/exresnte.c b/drivers/acpi/executer/exresnte.c
index 5596f42c9676..423ad3635f3d 100644
--- a/drivers/acpi/executer/exresnte.c
+++ b/drivers/acpi/executer/exresnte.c
@@ -46,8 +46,6 @@
 #include <acpi/acdispat.h>
 #include <acpi/acinterp.h>
 #include <acpi/acnamesp.h>
-#include <acpi/acparser.h>
-#include <acpi/amlcode.h>
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exresnte")
@@ -238,10 +236,10 @@ acpi_ex_resolve_node_to_value(struct acpi_namespace_node **object_ptr,
        case ACPI_TYPE_LOCAL_REFERENCE:
-                switch (source_desc->reference.opcode) {
+                switch (source_desc->reference.class) {
-                case AML_LOAD_OP:       /* This is a ddb_handle */
+                case ACPI_REFCLASS_TABLE:       /* This is a ddb_handle */
-                case AML_REF_OF_OP:
+                case ACPI_REFCLASS_REFOF:
-                case AML_INDEX_OP:
+                case ACPI_REFCLASS_INDEX:
                        /* Return an additional reference to the object */
@@ -253,10 +251,8 @@ acpi_ex_resolve_node_to_value(struct acpi_namespace_node **object_ptr,
                        /* No named references are allowed here */
                        ACPI_ERROR((AE_INFO,
-                                    "Unsupported Reference opcode %X (%s)",
+                                    "Unsupported Reference type %X",
-                                    source_desc->reference.opcode,
+                                    source_desc->reference.class));
-                                    acpi_ps_get_opcode_name(source_desc->
-                                                            reference.opcode)));
                        return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
                }
diff --git a/drivers/acpi/executer/exresolv.c b/drivers/acpi/executer/exresolv.c
index b35f7c817acf..89571b92a522 100644
--- a/drivers/acpi/executer/exresolv.c
+++ b/drivers/acpi/executer/exresolv.c
@@ -47,7 +47,6 @@
 #include <acpi/acdispat.h>
 #include <acpi/acinterp.h>
 #include <acpi/acnamesp.h>
-#include <acpi/acparser.h>
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exresolv")
@@ -141,7 +140,7 @@ acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr,
        acpi_status status = AE_OK;
        union acpi_operand_object *stack_desc;
        union acpi_operand_object *obj_desc = NULL;
-        u16 opcode;
+        u8 ref_type;
        ACPI_FUNCTION_TRACE(ex_resolve_object_to_value);
@@ -152,19 +151,19 @@ acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr,
        switch (ACPI_GET_OBJECT_TYPE(stack_desc)) {
        case ACPI_TYPE_LOCAL_REFERENCE:
-                opcode = stack_desc->reference.opcode;
+                ref_type = stack_desc->reference.class;
-                switch (opcode) {
+                switch (ref_type) {
-                case AML_LOCAL_OP:
+                case ACPI_REFCLASS_LOCAL:
-                case AML_ARG_OP:
+                case ACPI_REFCLASS_ARG:
                        /*
                         * Get the local from the method's state info
                         * Note: this increments the local's object reference count
                         */
-                        status = acpi_ds_method_data_get_value(opcode,
+                        status = acpi_ds_method_data_get_value(ref_type,
                                                               stack_desc->
-                                                               reference.offset,
+                                                               reference.value,
                                                               walk_state,
                                                               &obj_desc);
                        if (ACPI_FAILURE(status)) {
@@ -173,7 +172,7 @@ acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr,
                        ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
                                          "[Arg/Local %X] ValueObj is %p\n",
-                                          stack_desc->reference.offset,
+                                          stack_desc->reference.value,
                                          obj_desc));
                        /*
@@ -184,7 +183,7 @@ acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr,
                        *stack_ptr = obj_desc;
                        break;
-                case AML_INDEX_OP:
+                case ACPI_REFCLASS_INDEX:
                        switch (stack_desc->reference.target_type) {
                        case ACPI_TYPE_BUFFER_FIELD:
@@ -239,15 +238,15 @@ acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr,
                        }
                        break;
-                case AML_REF_OF_OP:
+                case ACPI_REFCLASS_REFOF:
-                case AML_DEBUG_OP:
+                case ACPI_REFCLASS_DEBUG:
-                case AML_LOAD_OP:
+                case ACPI_REFCLASS_TABLE:
                        /* Just leave the object as-is, do not dereference */
                        break;
-                case AML_INT_NAMEPATH_OP:       /* Reference to a named object */
+                case ACPI_REFCLASS_NAME:        /* Reference to a named object */
                        /* Dereference the name */
@@ -273,8 +272,7 @@ acpi_ex_resolve_object_to_value(union acpi_operand_object **stack_ptr,
                default:
                        ACPI_ERROR((AE_INFO,
-                                    "Unknown Reference opcode %X (%s) in %p",
+                                    "Unknown Reference type %X in %p", ref_type,
-                                    opcode, acpi_ps_get_opcode_name(opcode),
                                    stack_desc));
                        status = AE_AML_INTERNAL;
                        break;
@@ -388,13 +386,13 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
         * traversing the list of possibly many nested references.
         */
        while (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_LOCAL_REFERENCE) {
-                switch (obj_desc->reference.opcode) {
+                switch (obj_desc->reference.class) {
-                case AML_REF_OF_OP:
+                case ACPI_REFCLASS_REFOF:
-                case AML_INT_NAMEPATH_OP:
+                case ACPI_REFCLASS_NAME:
                        /* Dereference the reference pointer */
-                        if (obj_desc->reference.opcode == AML_REF_OF_OP) {
+                        if (obj_desc->reference.class == ACPI_REFCLASS_REFOF) {
                                node = obj_desc->reference.object;
                        } else {        /* AML_INT_NAMEPATH_OP */
@@ -429,7 +427,7 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
                        }
                        break;
-                case AML_INDEX_OP:
+                case ACPI_REFCLASS_INDEX:
                        /* Get the type of this reference (index into another object) */
@@ -455,22 +453,22 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
                        }
                        break;
-                case AML_LOAD_OP:
+                case ACPI_REFCLASS_TABLE:
                        type = ACPI_TYPE_DDB_HANDLE;
                        goto exit;
-                case AML_LOCAL_OP:
+                case ACPI_REFCLASS_LOCAL:
-                case AML_ARG_OP:
+                case ACPI_REFCLASS_ARG:
                        if (return_desc) {
                                status =
                                    acpi_ds_method_data_get_value(obj_desc->
                                                                  reference.
-                                                                  opcode,
+                                                                  class,
                                                                  obj_desc->
                                                                  reference.
-                                                                  offset,
+                                                                  value,
                                                                  walk_state,
                                                                  &obj_desc);
                                if (ACPI_FAILURE(status)) {
@@ -481,10 +479,10 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
                                status =
                                    acpi_ds_method_data_get_node(obj_desc->
                                                                 reference.
-                                                                 opcode,
+                                                                 class,
                                                                 obj_desc->
                                                                 reference.
-                                                                 offset,
+                                                                 value,
                                                                 walk_state,
                                                                 &node);
                                if (ACPI_FAILURE(status)) {
@@ -499,7 +497,7 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
                        }
                        break;
-                case AML_DEBUG_OP:
+                case ACPI_REFCLASS_DEBUG:
                        /* The Debug Object is of type "DebugObject" */
@@ -509,8 +507,8 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
                default:
                        ACPI_ERROR((AE_INFO,
-                                    "Unknown Reference subtype %X",
+                                    "Unknown Reference Class %2.2X",
-                                    obj_desc->reference.opcode));
+                                    obj_desc->reference.class));
                        return_ACPI_STATUS(AE_AML_INTERNAL);
                }
        }
diff --git a/drivers/acpi/executer/exresop.c b/drivers/acpi/executer/exresop.c
index 54085f16ec28..0bb82593da72 100644
--- a/drivers/acpi/executer/exresop.c
+++ b/drivers/acpi/executer/exresop.c
@@ -225,41 +225,36 @@ acpi_ex_resolve_operands(u16 opcode,
                        if (object_type == (u8) ACPI_TYPE_LOCAL_REFERENCE) {
-                                /* Decode the Reference */
+                                /* Validate the Reference */
-                                op_info = acpi_ps_get_opcode_info(opcode);
+                                switch (obj_desc->reference.class) {
-                                if (op_info->class == AML_CLASS_UNKNOWN) {
+                                case ACPI_REFCLASS_DEBUG:
-                                        return_ACPI_STATUS(AE_AML_BAD_OPCODE);
-                                }
-                                switch (obj_desc->reference.opcode) {
-                                case AML_DEBUG_OP:
                                        target_op = AML_DEBUG_OP;
                                        /*lint -fallthrough */
-                                case AML_INDEX_OP:
+                                case ACPI_REFCLASS_ARG:
-                                case AML_REF_OF_OP:
+                                case ACPI_REFCLASS_LOCAL:
-                                case AML_ARG_OP:
+                                case ACPI_REFCLASS_INDEX:
-                                case AML_LOCAL_OP:
+                                case ACPI_REFCLASS_REFOF:
-                                case AML_LOAD_OP:       /* ddb_handle from LOAD_OP or LOAD_TABLE_OP */
+                                case ACPI_REFCLASS_TABLE:       /* ddb_handle from LOAD_OP or LOAD_TABLE_OP */
-                                case AML_INT_NAMEPATH_OP:       /* Reference to a named object */
+                                case ACPI_REFCLASS_NAME:        /* Reference to a named object */
-                                        ACPI_DEBUG_ONLY_MEMBERS(ACPI_DEBUG_PRINT
+                                        ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
-                                                                ((ACPI_DB_EXEC,
+                                                          "Operand is a Reference, Class [%s] %2.2X\n",
-                                                                  "Operand is a Reference, RefOpcode [%s]\n",
+                                                          acpi_ut_get_reference_name
-                                                                  (acpi_ps_get_opcode_info
+                                                          (obj_desc),
-                                                                   (obj_desc->
+                                                          obj_desc->reference.
-                                                                    reference.
+                                                          class));
-                                                                    opcode))->
-                                                                  name)));
                                        break;
                                default:
                                        ACPI_ERROR((AE_INFO,
-                                                    "Operand is a Reference, Unknown Reference Opcode: %X",
+                                                    "Unknown Reference Class %2.2X in %p",
-                                                    obj_desc->reference.
+                                                    obj_desc->reference.class,
-                                                    opcode));
+                                                    obj_desc));
                                        return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
                                }
@@ -270,8 +265,7 @@ acpi_ex_resolve_operands(u16 opcode,
                        /* Invalid descriptor */
-                        ACPI_ERROR((AE_INFO,
+                        ACPI_ERROR((AE_INFO, "Invalid descriptor %p [%s]",
-                                    "Invalid descriptor %p [%s]",
                                    obj_desc,
                                    acpi_ut_get_descriptor_name(obj_desc)));
@@ -343,7 +337,7 @@ acpi_ex_resolve_operands(u16 opcode,
                        if ((opcode == AML_STORE_OP) &&
                            (ACPI_GET_OBJECT_TYPE(*stack_ptr) ==
                             ACPI_TYPE_LOCAL_REFERENCE)
-                            && ((*stack_ptr)->reference.opcode == AML_INDEX_OP)) {
+                            && ((*stack_ptr)->reference.class == ACPI_REFCLASS_INDEX)) {
                                goto next_operand;
                        }
                        break;
diff --git a/drivers/acpi/executer/exstore.c b/drivers/acpi/executer/exstore.c
index 38b55e352495..3318df4cbd98 100644
--- a/drivers/acpi/executer/exstore.c
+++ b/drivers/acpi/executer/exstore.c
@@ -47,7 +47,6 @@
 #include <acpi/acinterp.h>
 #include <acpi/amlcode.h>
 #include <acpi/acnamesp.h>
-#include <acpi/acparser.h>
 #define _COMPONENT          ACPI_EXECUTER
 ACPI_MODULE_NAME("exstore")
@@ -179,22 +178,26 @@ acpi_ex_do_debug_object(union acpi_operand_object *source_desc,
        case ACPI_TYPE_LOCAL_REFERENCE:
-                if (source_desc->reference.opcode == AML_INDEX_OP) {
+                ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[%s] ",
-                        ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
+                                      acpi_ut_get_reference_name(source_desc)));
-                                              "[%s, 0x%X]\n",
-                                              acpi_ps_get_opcode_name
+                /* Decode the reference */
-                                              (source_desc->reference.opcode),
-                                              source_desc->reference.offset));
+                switch (source_desc->reference.class) {
-                } else {
+                case ACPI_REFCLASS_INDEX:
-                        ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "[%s]",
-                                              acpi_ps_get_opcode_name
+                        ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "0x%X\n",
-                                              (source_desc->reference.opcode)));
+                                              source_desc->reference.value));
-                }
+                        break;
+                case ACPI_REFCLASS_TABLE:
-                if (source_desc->reference.opcode == AML_LOAD_OP) {     /* Load and load_table */
                        ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT,
-                                              " Table OwnerId %p\n",
+                                              "Table Index 0x%X\n",
-                                              source_desc->reference.object));
+                                              source_desc->reference.value));
+                        break;
+                default:
                        break;
                }
@@ -347,15 +350,15 @@ acpi_ex_store(union acpi_operand_object *source_desc,
        }
        /*
-         * Examine the Reference opcode.  These cases are handled:
+         * Examine the Reference class. These cases are handled:
         *
         * 1) Store to Name (Change the object associated with a name)
         * 2) Store to an indexed area of a Buffer or Package
         * 3) Store to a Method Local or Arg
         * 4) Store to the debug object
         */
-        switch (ref_desc->reference.opcode) {
+        switch (ref_desc->reference.class) {
-        case AML_REF_OF_OP:
+        case ACPI_REFCLASS_REFOF:
                /* Storing an object into a Name "container" */
@@ -365,7 +368,7 @@ acpi_ex_store(union acpi_operand_object *source_desc,
                                                      ACPI_IMPLICIT_CONVERSION);
                break;
-        case AML_INDEX_OP:
+        case ACPI_REFCLASS_INDEX:
                /* Storing to an Index (pointer into a packager or buffer) */
@@ -374,18 +377,18 @@ acpi_ex_store(union acpi_operand_object *source_desc,
                                                  walk_state);
                break;
-        case AML_LOCAL_OP:
+        case ACPI_REFCLASS_LOCAL:
-        case AML_ARG_OP:
+        case ACPI_REFCLASS_ARG:
                /* Store to a method local/arg  */
                status =
-                    acpi_ds_store_object_to_local(ref_desc->reference.opcode,
+                    acpi_ds_store_object_to_local(ref_desc->reference.class,
-                                                  ref_desc->reference.offset,
+                                                  ref_desc->reference.value,
                                                  source_desc, walk_state);
                break;
-        case AML_DEBUG_OP:
+        case ACPI_REFCLASS_DEBUG:
                /*
                 * Storing to the Debug object causes the value stored to be
@@ -401,9 +404,9 @@ acpi_ex_store(union acpi_operand_object *source_desc,
        default:
-                ACPI_ERROR((AE_INFO, "Unknown Reference opcode %X",
+                ACPI_ERROR((AE_INFO, "Unknown Reference Class %2.2X",
-                            ref_desc->reference.opcode));
+                            ref_desc->reference.class));
-                ACPI_DUMP_ENTRY(ref_desc, ACPI_LV_ERROR);
+                ACPI_DUMP_ENTRY(ref_desc, ACPI_LV_INFO);
                status = AE_AML_INTERNAL;
                break;
@@ -458,7 +461,7 @@ acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
                if (ACPI_GET_OBJECT_TYPE(source_desc) ==
                    ACPI_TYPE_LOCAL_REFERENCE
-                    && source_desc->reference.opcode == AML_LOAD_OP) {
+                    && source_desc->reference.class == ACPI_REFCLASS_TABLE) {
                        /* This is a DDBHandle, just add a reference to it */
@@ -553,7 +556,7 @@ acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
                /* Store the source value into the target buffer byte */
-                obj_desc->buffer.pointer[index_desc->reference.offset] = value;
+                obj_desc->buffer.pointer[index_desc->reference.value] = value;
                break;
        default:
diff --git a/drivers/acpi/executer/exstoren.c b/drivers/acpi/executer/exstoren.c
index a6d2168b81f9..eef61a00803e 100644
--- a/drivers/acpi/executer/exstoren.c
+++ b/drivers/acpi/executer/exstoren.c
@@ -121,7 +121,8 @@ acpi_ex_resolve_object(union acpi_operand_object **source_desc_ptr,
                    (ACPI_GET_OBJECT_TYPE(source_desc) != ACPI_TYPE_STRING) &&
                    !((ACPI_GET_OBJECT_TYPE(source_desc) ==
                       ACPI_TYPE_LOCAL_REFERENCE)
-                      && (source_desc->reference.opcode == AML_LOAD_OP))) {
+                      && (source_desc->reference.class ==
+                          ACPI_REFCLASS_TABLE))) {
                        /* Conversion successful but still not a valid type */
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 2655bc1b4eeb..60d54d1f6b19 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -265,7 +265,7 @@ static int acpi_fan_add(struct acpi_device *device)
        dev_info(&device->dev, "registered as cooling_device%d\n", cdev->id);
-        acpi_driver_data(device) = cdev;
+        device->driver_data = cdev;
        result = sysfs_create_link(&device->dev.kobj,
                                   &cdev->device.kobj,
                                   "thermal_cooling");
@@ -327,8 +327,8 @@ static int acpi_fan_resume(struct acpi_device *device)
        result = acpi_bus_get_power(device->handle, &power_state);
        if (result) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                printk(KERN_ERR PREFIX
-                                  "Error reading fan power state\n"));
+                                  "Error reading fan power state\n");
                return result;
        }
diff --git a/drivers/acpi/namespace/Makefile b/drivers/acpi/namespace/Makefile
index 3f63d3640696..371a2daf837f 100644
--- a/drivers/acpi/namespace/Makefile
+++ b/drivers/acpi/namespace/Makefile
@@ -5,7 +5,7 @@
 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
+         nsparse.o   nspredef.o
 obj-$(ACPI_FUTURE_USAGE) += nsdumpdv.o
diff --git a/drivers/acpi/namespace/nsdump.c b/drivers/acpi/namespace/nsdump.c
index 0ab22004728a..cc0ae39440e4 100644
--- a/drivers/acpi/namespace/nsdump.c
+++ b/drivers/acpi/namespace/nsdump.c
@@ -43,7 +43,6 @@
 #include <acpi/acpi.h>
 #include <acpi/acnamesp.h>
-#include <acpi/acparser.h>
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsdump")
@@ -334,9 +333,7 @@ acpi_ns_dump_one_object(acpi_handle obj_handle,
                case ACPI_TYPE_LOCAL_REFERENCE:
                        acpi_os_printf("[%s]\n",
-                                       acpi_ps_get_opcode_name(obj_desc->
+                                       acpi_ut_get_reference_name(obj_desc));
-                                                               reference.
-                                                               opcode));
                        break;
                case ACPI_TYPE_BUFFER_FIELD:
diff --git a/drivers/acpi/namespace/nseval.c b/drivers/acpi/namespace/nseval.c
index d369164e00b0..4cdf03ac2b46 100644
--- a/drivers/acpi/namespace/nseval.c
+++ b/drivers/acpi/namespace/nseval.c
@@ -78,6 +78,7 @@ ACPI_MODULE_NAME("nseval")
 acpi_status acpi_ns_evaluate(struct acpi_evaluate_info * info)
 {
        acpi_status status;
+        struct acpi_namespace_node *node;
        ACPI_FUNCTION_TRACE(ns_evaluate);
@@ -117,6 +118,8 @@ acpi_status acpi_ns_evaluate(struct acpi_evaluate_info * info)
                          info->resolved_node,
                          acpi_ns_get_attached_object(info->resolved_node)));
+        node = info->resolved_node;
        /*
         * Two major cases here:
         *
@@ -148,21 +151,22 @@ acpi_status acpi_ns_evaluate(struct acpi_evaluate_info * info)
                                info->param_count++;
                }
-                /* Error if too few arguments were passed in */
+                /*
+                 * 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_ERROR((AE_INFO,
+                        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));
-                        return_ACPI_STATUS(AE_MISSING_ARGUMENTS);
+                } else if (info->param_count >
-                }
-                /* Just a warning if too many arguments */
-                else if (info->param_count >
                                info->obj_desc->method.param_count) {
                        ACPI_WARNING((AE_INFO,
                                      "Excess arguments - "
@@ -195,7 +199,28 @@ acpi_status acpi_ns_evaluate(struct acpi_evaluate_info * info)
        } else {
                /*
                 * 2) Object is not a method, return its current value
+                 *
+                 * Disallow certain object types. For these, "evaluation" is undefined.
                 */
+                switch (info->resolved_node->type) {
+                case ACPI_TYPE_DEVICE:
+                case ACPI_TYPE_EVENT:
+                case ACPI_TYPE_MUTEX:
+                case ACPI_TYPE_REGION:
+                case ACPI_TYPE_THERMAL:
+                case ACPI_TYPE_LOCAL_SCOPE:
+                        ACPI_ERROR((AE_INFO,
+                                    "[%4.4s] Evaluation of object type [%s] is not supported",
+                                    info->resolved_node->name.ascii,
+                                    acpi_ut_get_type_name(info->resolved_node->
+                                                          type)));
+                        return_ACPI_STATUS(AE_TYPE);
+                default:
+                        break;
+                }
                /*
                 * Objects require additional resolution steps (e.g., the Node may be
@@ -239,9 +264,35 @@ acpi_status acpi_ns_evaluate(struct acpi_evaluate_info * info)
                }
        }
-        /*
+        /* Validation of return values for ACPI-predefined methods and objects */
-         * Check if there is a return value that must be dealt with
-         */
+        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 if there is a return value that must be dealt with */
        if (status == AE_CTRL_RETURN_VALUE) {
                /* If caller does not want the return value, delete it */
diff --git a/drivers/acpi/namespace/nsnames.c b/drivers/acpi/namespace/nsnames.c
index bd5773878009..42a39a7c96e9 100644
--- a/drivers/acpi/namespace/nsnames.c
+++ b/drivers/acpi/namespace/nsnames.c
@@ -115,7 +115,6 @@ acpi_ns_build_external_path(struct acpi_namespace_node *node,
        return (AE_OK);
 }
-#ifdef ACPI_DEBUG_OUTPUT
 /*******************************************************************************
 *
 * FUNCTION:    acpi_ns_get_external_pathname
@@ -142,7 +141,7 @@ char *acpi_ns_get_external_pathname(struct acpi_namespace_node *node)
        size = acpi_ns_get_pathname_length(node);
        if (!size) {
-                return (NULL);
+                return_PTR(NULL);
        }
        /* Allocate a buffer to be returned to caller */
@@ -157,12 +156,12 @@ char *acpi_ns_get_external_pathname(struct acpi_namespace_node *node)
        status = acpi_ns_build_external_path(node, size, name_buffer);
        if (ACPI_FAILURE(status)) {
-                return (NULL);
+                ACPI_FREE(name_buffer);
+                return_PTR(NULL);
        }
        return_PTR(name_buffer);
 }
-#endif
 /*******************************************************************************
 *
diff --git a/drivers/acpi/namespace/nspredef.c b/drivers/acpi/namespace/nspredef.c
new file mode 100644
index 000000000000..0f17cf0898c9
--- /dev/null
+++ b/drivers/acpi/namespace/nspredef.c
@@ -0,0 +1,900 @@
+/******************************************************************************
+ *
+ * Module Name: nspredef - Validation of ACPI predefined methods and objects
+ *              $Revision: 1.1 $
+ *
+ *****************************************************************************/
+/*
+ * 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 <acpi/acnamesp.h>
+#include <acpi/acpredef.h>
+#define _COMPONENT          ACPI_NAMESPACE
+ACPI_MODULE_NAME("nspredef")
+/*******************************************************************************
+ *
+ * This module validates predefined ACPI objects that appear in the namespace,
+ * at the time they are evaluated (via acpi_evaluate_object). The purpose of this
+ * validation is to detect problems with BIOS-exposed predefined ACPI objects
+ * before the results are returned to the ACPI-related drivers.
+ *
+ * There are several areas that are validated:
+ *
+ *  1) The number of input arguments as defined by the method/object in the
+ *      ASL is validated against the ACPI specification.
+ *  2) The type of the return object (if any) is validated against the ACPI
+ *      specification.
+ *  3) For returned package objects, the count of package elements is
+ *      validated, as well as the type of each package element. Nested
+ *      packages are supported.
+ *
+ * For any problems found, a warning message is issued.
+ *
+ ******************************************************************************/
+/* Local prototypes */
+static acpi_status
+acpi_ns_check_package(char *pathname,
+                      union acpi_operand_object *return_object,
+                      const union acpi_predefined_info *predefined);
+static acpi_status
+acpi_ns_check_package_elements(char *pathname,
+                               union acpi_operand_object **elements,
+                               u8 type1, u32 count1, u8 type2, u32 count2);
+static acpi_status
+acpi_ns_check_object_type(char *pathname,
+                          union acpi_operand_object *return_object,
+                          u32 expected_btypes, u32 package_index);
+static acpi_status
+acpi_ns_check_reference(char *pathname,
+                        union acpi_operand_object *return_object);
+/*
+ * 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
+ */
+static const char *acpi_rtype_names[] = {
+        "/Integer",
+        "/String",
+        "/Buffer",
+        "/Package",
+        "/Reference",
+};
+#define ACPI_NOT_PACKAGE    ACPI_UINT32_MAX
+/*******************************************************************************
+ *
+ * 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:      Status
+ *
+ * DESCRIPTION: Check an ACPI name for a match in the predefined name list.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
+                               union acpi_operand_object *return_object)
+{
+        acpi_status status = AE_OK;
+        const union acpi_predefined_info *predefined;
+        char *pathname;
+        /* 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 */
+        pathname = acpi_ns_get_external_pathname(node);
+        if (!pathname) {
+                pathname = ACPI_CAST_PTR(char, predefined->info.name);
+        }
+        /*
+         * Check that the parameter count for this method is in accordance
+         * with the ACPI specification.
+         */
+        acpi_ns_check_parameter_count(pathname, node, predefined);
+        /*
+         * If there is no return value, check if we require a return value for
+         * this predefined name. Either one return value is expected, or none,
+         * for both methods and other objects.
+         *
+         * Exit now if there is no return object. Warning if one was expected.
+         */
+        if (!return_object) {
+                if ((predefined->info.expected_btypes) &&
+                    (!(predefined->info.expected_btypes & ACPI_RTYPE_NONE))) {
+                        ACPI_ERROR((AE_INFO,
+                                    "%s: Missing expected return value",
+                                    pathname));
+                        status = AE_AML_NO_RETURN_VALUE;
+                }
+                goto exit;
+        }
+        /*
+         * 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
+         * always return a value
+         */
+        if (!predefined->info.expected_btypes) {
+                goto exit;
+        }
+        /*
+         * 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,
+                                           predefined->info.expected_btypes,
+                                           ACPI_NOT_PACKAGE);
+        if (ACPI_FAILURE(status)) {
+                goto exit;
+        }
+        /* For returned Package objects, check the type of all sub-objects */
+        if (ACPI_GET_OBJECT_TYPE(return_object) == ACPI_TYPE_PACKAGE) {
+                status =
+                    acpi_ns_check_package(pathname, return_object, predefined);
+        }
+      exit:
+        if (pathname) {
+                ACPI_FREE(pathname);
+        }
+        return (status);
+}
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_check_parameter_count
+ *
+ * PARAMETERS:  Pathname        - Full pathname to the node (for error msgs)
+ *              Node            - Namespace node for the method/object
+ *              Predefined      - Pointer to entry in predefined name table
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Check that the declared (in ASL/AML) parameter count for a
+ *              predefined name is what is expected (i.e., what is defined in
+ *              the ACPI specification for this predefined name.)
+ *
+ ******************************************************************************/
+void
+acpi_ns_check_parameter_count(char *pathname,
+                              struct acpi_namespace_node *node,
+                              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.
+         */
+        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) */
+        required_params_current = predefined->info.param_count & 0x0F;
+        required_params_old = predefined->info.param_count >> 4;
+        if ((param_count != required_params_current) &&
+            (param_count != required_params_old)) {
+                ACPI_WARNING((AE_INFO,
+                              "%s: Parameter count mismatch - ASL declared %d, expected %d",
+                              pathname, param_count, required_params_current));
+        }
+}
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_check_for_predefined_name
+ *
+ * PARAMETERS:  Node            - Namespace node for the method/object
+ *
+ * RETURN:      Pointer to entry in predefined table. NULL indicates not found.
+ *
+ * DESCRIPTION: Check an object name against the predefined object list.
+ *
+ ******************************************************************************/
+const union acpi_predefined_info *acpi_ns_check_for_predefined_name(struct
+                                                                    acpi_namespace_node
+                                                                    *node)
+{
+        const union acpi_predefined_info *this_name;
+        /* Quick check for a predefined name, first character must be underscore */
+        if (node->name.ascii[0] != '_') {
+                return (NULL);
+        }
+        /* Search info table for a predefined method/object name */
+        this_name = predefined_names;
+        while (this_name->info.name[0]) {
+                if (ACPI_COMPARE_NAME(node->name.ascii, this_name->info.name)) {
+                        /* Return pointer to this table entry */
+                        return (this_name);
+                }
+                /*
+                 * Skip next entry in the table if this name returns a Package
+                 * (next entry contains the package info)
+                 */
+                if (this_name->info.expected_btypes & ACPI_RTYPE_PACKAGE) {
+                        this_name++;
+                }
+                this_name++;
+        }
+        return (NULL);
+}
+/*******************************************************************************
+ *
+ * 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
+ *              Predefined      - Pointer to entry in predefined name table
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Check a returned package object for the correct count and
+ *              correct type of all sub-objects.
+ *
+ ******************************************************************************/
+static acpi_status
+acpi_ns_check_package(char *pathname,
+                      union acpi_operand_object *return_object,
+                      const union acpi_predefined_info *predefined)
+{
+        const union acpi_predefined_info *package;
+        union acpi_operand_object *sub_package;
+        union acpi_operand_object **elements;
+        union acpi_operand_object **sub_elements;
+        acpi_status status;
+        u32 expected_count;
+        u32 count;
+        u32 i;
+        u32 j;
+        ACPI_FUNCTION_NAME(ns_check_package);
+        /* The package info for this name is in the next table entry */
+        package = predefined + 1;
+        ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
+                          "%s Validating return Package of Type %X, Count %X\n",
+                          pathname, package->ret_info.type,
+                          return_object->package.count));
+        /* Extract package count and elements array */
+        elements = return_object->package.elements;
+        count = return_object->package.count;
+        /* The package must have at least one element, else invalid */
+        if (!count) {
+                ACPI_WARNING((AE_INFO,
+                              "%s: Return Package has no elements (empty)",
+                              pathname));
+                return (AE_AML_OPERAND_VALUE);
+        }
+        /*
+         * Decode the type of the expected package contents
+         *
+         * PTYPE1 packages contain no subpackages
+         * PTYPE2 packages contain sub-packages
+         */
+        switch (package->ret_info.type) {
+        case ACPI_PTYPE1_FIXED:
+                /*
+                 * The package count is fixed and there are no sub-packages
+                 *
+                 * If package is too small, exit.
+                 * If package is larger than expected, issue warning but continue
+                 */
+                expected_count =
+                    package->ret_info.count1 + package->ret_info.count2;
+                if (count < expected_count) {
+                        goto package_too_small;
+                } else if (count > expected_count) {
+                        ACPI_WARNING((AE_INFO,
+                                      "%s: Return Package is larger than needed - "
+                                      "found %u, expected %u", pathname, count,
+                                      expected_count));
+                }
+                /* Validate all elements of the returned package */
+                status = acpi_ns_check_package_elements(pathname, elements,
+                                                        package->ret_info.
+                                                        object_type1,
+                                                        package->ret_info.
+                                                        count1,
+                                                        package->ret_info.
+                                                        object_type2,
+                                                        package->ret_info.
+                                                        count2);
+                if (ACPI_FAILURE(status)) {
+                        return (status);
+                }
+                break;
+        case ACPI_PTYPE1_VAR:
+                /*
+                 * The package count is variable, there are no sub-packages, and all
+                 * elements must be of the same type
+                 */
+                for (i = 0; i < count; i++) {
+                        status = acpi_ns_check_object_type(pathname, *elements,
+                                                           package->ret_info.
+                                                           object_type1, i);
+                        if (ACPI_FAILURE(status)) {
+                                return (status);
+                        }
+                        elements++;
+                }
+                break;
+        case ACPI_PTYPE1_OPTION:
+                /*
+                 * The package count is variable, there are no sub-packages. There are
+                 * a fixed number of required elements, and a variable number of
+                 * optional elements.
+                 *
+                 * Check if package is at least as large as the minimum required
+                 */
+                expected_count = package->ret_info3.count;
+                if (count < expected_count) {
+                        goto package_too_small;
+                }
+                /* Variable number of sub-objects */
+                for (i = 0; i < count; i++) {
+                        if (i < package->ret_info3.count) {
+                                /* These are the required package elements (0, 1, or 2) */
+                                status =
+                                    acpi_ns_check_object_type(pathname,
+                                                              *elements,
+                                                              package->
+                                                              ret_info3.
+                                                              object_type[i],
+                                                              i);
+                                if (ACPI_FAILURE(status)) {
+                                        return (status);
+                                }
+                        } else {
+                                /* These are the optional package elements */
+                                status =
+                                    acpi_ns_check_object_type(pathname,
+                                                              *elements,
+                                                              package->
+                                                              ret_info3.
+                                                              tail_object_type,
+                                                              i);
+                                if (ACPI_FAILURE(status)) {
+                                        return (status);
+                                }
+                        }
+                        elements++;
+                }
+                break;
+        case ACPI_PTYPE2_PKG_COUNT:
+                /* First element is the (Integer) count of sub-packages to follow */
+                status = acpi_ns_check_object_type(pathname, *elements,
+                                                   ACPI_RTYPE_INTEGER, 0);
+                if (ACPI_FAILURE(status)) {
+                        return (status);
+                }
+                /*
+                 * Count cannot be larger than the parent package length, but allow it
+                 * to be smaller. The >= accounts for the Integer above.
+                 */
+                expected_count = (u32) (*elements)->integer.value;
+                if (expected_count >= count) {
+                        goto package_too_small;
+                }
+                count = expected_count;
+                elements++;
+                /* Now we can walk the sub-packages */
+                /*lint -fallthrough */
+        case ACPI_PTYPE2:
+        case ACPI_PTYPE2_FIXED:
+        case ACPI_PTYPE2_MIN:
+        case ACPI_PTYPE2_COUNT:
+                /*
+                 * These types all return a single package that consists of a variable
+                 * number of sub-packages
+                 */
+                for (i = 0; i < count; i++) {
+                        sub_package = *elements;
+                        sub_elements = sub_package->package.elements;
+                        /* Each sub-object must be of type Package */
+                        status =
+                            acpi_ns_check_object_type(pathname, sub_package,
+                                                      ACPI_RTYPE_PACKAGE, i);
+                        if (ACPI_FAILURE(status)) {
+                                return (status);
+                        }
+                        /* Examine the different types of sub-packages */
+                        switch (package->ret_info.type) {
+                        case ACPI_PTYPE2:
+                        case ACPI_PTYPE2_PKG_COUNT:
+                                /* Each subpackage has a fixed number of elements */
+                                expected_count =
+                                    package->ret_info.count1 +
+                                    package->ret_info.count2;
+                                if (sub_package->package.count !=
+                                    expected_count) {
+                                        count = sub_package->package.count;
+                                        goto package_too_small;
+                                }
+                                status =
+                                    acpi_ns_check_package_elements(pathname,
+                                                                   sub_elements,
+                                                                   package->
+                                                                   ret_info.
+                                                                   object_type1,
+                                                                   package->
+                                                                   ret_info.
+                                                                   count1,
+                                                                   package->
+                                                                   ret_info.
+                                                                   object_type2,
+                                                                   package->
+                                                                   ret_info.
+                                                                   count2);
+                                if (ACPI_FAILURE(status)) {
+                                        return (status);
+                                }
+                                break;
+                        case ACPI_PTYPE2_FIXED:
+                                /* Each sub-package has a fixed length */
+                                expected_count = package->ret_info2.count;
+                                if (sub_package->package.count < expected_count) {
+                                        count = sub_package->package.count;
+                                        goto package_too_small;
+                                }
+                                /* Check the type of each sub-package element */
+                                for (j = 0; j < expected_count; j++) {
+                                        status =
+                                            acpi_ns_check_object_type(pathname,
+                                                                      sub_elements
+                                                                      [j],
+                                                                      package->
+                                                                      ret_info2.
+                                                                      object_type
+                                                                      [j], j);
+                                        if (ACPI_FAILURE(status)) {
+                                                return (status);
+                                        }
+                                }
+                                break;
+                        case ACPI_PTYPE2_MIN:
+                                /* Each sub-package has a variable but minimum length */
+                                expected_count = package->ret_info.count1;
+                                if (sub_package->package.count < expected_count) {
+                                        count = sub_package->package.count;
+                                        goto package_too_small;
+                                }
+                                /* Check the type of each sub-package element */
+                                status =
+                                    acpi_ns_check_package_elements(pathname,
+                                                                   sub_elements,
+                                                                   package->
+                                                                   ret_info.
+                                                                   object_type1,
+                                                                   sub_package->
+                                                                   package.
+                                                                   count, 0, 0);
+                                if (ACPI_FAILURE(status)) {
+                                        return (status);
+                                }
+                                break;
+                        case ACPI_PTYPE2_COUNT:
+                                /* First element is the (Integer) count of elements to follow */
+                                status =
+                                    acpi_ns_check_object_type(pathname,
+                                                              *sub_elements,
+                                                              ACPI_RTYPE_INTEGER,
+                                                              0);
+                                if (ACPI_FAILURE(status)) {
+                                        return (status);
+                                }
+                                /* Make sure package is large enough for the Count */
+                                expected_count =
+                                    (u32) (*sub_elements)->integer.value;
+                                if (sub_package->package.count < expected_count) {
+                                        count = sub_package->package.count;
+                                        goto package_too_small;
+                                }
+                                /* Check the type of each sub-package element */
+                                status =
+                                    acpi_ns_check_package_elements(pathname,
+                                                                   (sub_elements
+                                                                    + 1),
+                                                                   package->
+                                                                   ret_info.
+                                                                   object_type1,
+                                                                   (expected_count
+                                                                    - 1), 0, 0);
+                                if (ACPI_FAILURE(status)) {
+                                        return (status);
+                                }
+                                break;
+                        default:
+                                break;
+                        }
+                        elements++;
+                }
+                break;
+        default:
+                /* Should not get here if predefined info table is correct */
+                ACPI_WARNING((AE_INFO,
+                              "%s: Invalid internal return type in table entry: %X",
+                              pathname, package->ret_info.type));
+                return (AE_AML_INTERNAL);
+        }
+        return (AE_OK);
+      package_too_small:
+        /* Error exit for the case with an incorrect package count */
+        ACPI_WARNING((AE_INFO, "%s: Return Package is too small - "
+                      "found %u, expected %u", pathname, count,
+                      expected_count));
+        return (AE_AML_OPERAND_VALUE);
+}
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_check_package_elements
+ *
+ * PARAMETERS:  Pathname        - Full pathname to the node (for error msgs)
+ *              Elements        - Pointer to the package elements array
+ *              Type1           - Object type for first group
+ *              Count1          - Count for first group
+ *              Type2           - Object type for second group
+ *              Count2          - Count for second group
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Check that all elements of a package are of the correct object
+ *              type. Supports up to two groups of different object types.
+ *
+ ******************************************************************************/
+static acpi_status
+acpi_ns_check_package_elements(char *pathname,
+                               union acpi_operand_object **elements,
+                               u8 type1, u32 count1, u8 type2, u32 count2)
+{
+        union acpi_operand_object **this_element = elements;
+        acpi_status status;
+        u32 i;
+        /*
+         * Up to two groups of package elements are supported by the data
+         * structure. All elements in each group must be of the same type.
+         * The second group can have a count of zero.
+         */
+        for (i = 0; i < count1; i++) {
+                status = acpi_ns_check_object_type(pathname, *this_element,
+                                                   type1, i);
+                if (ACPI_FAILURE(status)) {
+                        return (status);
+                }
+                this_element++;
+        }
+        for (i = 0; i < count2; i++) {
+                status = acpi_ns_check_object_type(pathname, *this_element,
+                                                   type2, (i + count1));
+                if (ACPI_FAILURE(status)) {
+                        return (status);
+                }
+                this_element++;
+        }
+        return (AE_OK);
+}
+/*******************************************************************************
+ *
+ * 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
+ *              expected_btypes - Bitmap of expected return type(s)
+ *              package_index   - Index of object within parent package (if
+ *                                applicable - ACPI_NOT_PACKAGE otherwise)
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Check the type of the return object against the expected object
+ *              type(s). Use of Btype allows multiple expected object types.
+ *
+ ******************************************************************************/
+static acpi_status
+acpi_ns_check_object_type(char *pathname,
+                          union acpi_operand_object *return_object,
+                          u32 expected_btypes, u32 package_index)
+{
+        acpi_status status = AE_OK;
+        u32 return_btype;
+        char type_buffer[48];   /* Room for 5 types */
+        u32 this_rtype;
+        u32 i;
+        u32 j;
+        /*
+         * If we get a NULL return_object here, it is a NULL package element,
+         * and this is always an error.
+         */
+        if (!return_object) {
+                goto type_error_exit;
+        }
+        /* A Namespace node should not get here, but make sure */
+        if (ACPI_GET_DESCRIPTOR_TYPE(return_object) == ACPI_DESC_TYPE_NAMED) {
+                ACPI_WARNING((AE_INFO,
+                              "%s: Invalid return type - Found a Namespace node [%4.4s] type %s",
+                              pathname, return_object->node.name.ascii,
+                              acpi_ut_get_type_name(return_object->node.type)));
+                return (AE_AML_OPERAND_TYPE);
+        }
+        /*
+         * Convert the object type (ACPI_TYPE_xxx) to a bitmapped object type.
+         * The bitmapped type allows multiple possible return types.
+         *
+         * Note, the cases below must handle all of the possible types returned
+         * from all of the predefined names (including elements of returned
+         * packages)
+         */
+        switch (ACPI_GET_OBJECT_TYPE(return_object)) {
+        case ACPI_TYPE_INTEGER:
+                return_btype = ACPI_RTYPE_INTEGER;
+                break;
+        case ACPI_TYPE_BUFFER:
+                return_btype = ACPI_RTYPE_BUFFER;
+                break;
+        case ACPI_TYPE_STRING:
+                return_btype = ACPI_RTYPE_STRING;
+                break;
+        case ACPI_TYPE_PACKAGE:
+                return_btype = ACPI_RTYPE_PACKAGE;
+                break;
+        case ACPI_TYPE_LOCAL_REFERENCE:
+                return_btype = ACPI_RTYPE_REFERENCE;
+                break;
+        default:
+                /* Not one of the supported objects, must be incorrect */
+                goto type_error_exit;
+        }
+        /* Is the object one of the expected types? */
+        if (!(return_btype & expected_btypes)) {
+                goto type_error_exit;
+        }
+        /* For reference objects, check that the reference type is correct */
+        if (ACPI_GET_OBJECT_TYPE(return_object) == ACPI_TYPE_LOCAL_REFERENCE) {
+                status = acpi_ns_check_reference(pathname, return_object);
+        }
+        return (status);
+      type_error_exit:
+        /* Create a string with all expected types for this predefined object */
+        j = 1;
+        type_buffer[0] = 0;
+        this_rtype = ACPI_RTYPE_INTEGER;
+        for (i = 0; i < ACPI_NUM_RTYPES; i++) {
+                /* If one of the expected types, concatenate the name of this type */
+                if (expected_btypes & this_rtype) {
+                        ACPI_STRCAT(type_buffer, &acpi_rtype_names[i][j]);
+                        j = 0;  /* Use name separator from now on */
+                }
+                this_rtype <<= 1;       /* Next Rtype */
+        }
+        if (package_index == ACPI_NOT_PACKAGE) {
+                ACPI_WARNING((AE_INFO,
+                              "%s: Return type mismatch - found %s, expected %s",
+                              pathname,
+                              acpi_ut_get_object_type_name(return_object),
+                              type_buffer));
+        } else {
+                ACPI_WARNING((AE_INFO,
+                              "%s: Return Package type mismatch at index %u - "
+                              "found %s, expected %s", pathname, package_index,
+                              acpi_ut_get_object_type_name(return_object),
+                              type_buffer));
+        }
+        return (AE_AML_OPERAND_TYPE);
+}
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_check_reference
+ *
+ * PARAMETERS:  Pathname        - Full pathname to the node (for error msgs)
+ *              return_object   - Object returned from the evaluation of a
+ *                                method or object
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Check a returned reference object for the correct reference
+ *              type. The only reference type that can be returned from a
+ *              predefined method is a named reference. All others are invalid.
+ *
+ ******************************************************************************/
+static acpi_status
+acpi_ns_check_reference(char *pathname,
+                        union acpi_operand_object *return_object)
+{
+        /*
+         * Check the reference object for the correct reference type (opcode).
+         * The only type of reference that can be converted to an union acpi_object is
+         * a reference to a named object (reference class: NAME)
+         */
+        if (return_object->reference.class == ACPI_REFCLASS_NAME) {
+                return (AE_OK);
+        }
+        ACPI_WARNING((AE_INFO,
+                      "%s: Return type mismatch - unexpected reference object type [%s] %2.2X",
+                      pathname, acpi_ut_get_reference_name(return_object),
+                      return_object->reference.class));
+        return (AE_AML_OPERAND_TYPE);
+}
diff --git a/drivers/acpi/namespace/nssearch.c b/drivers/acpi/namespace/nssearch.c
index 8399276cba1e..a9a80bf811b3 100644
--- a/drivers/acpi/namespace/nssearch.c
+++ b/drivers/acpi/namespace/nssearch.c
@@ -331,7 +331,7 @@ acpi_ns_search_and_enter(u32 target_name,
                                      "Found bad character(s) in name, repaired: [%4.4s]\n",
                                      ACPI_CAST_PTR(char, &target_name)));
                } else {
-                        ACPI_DEBUG_PRINT((ACPI_DB_WARN,
+                        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
                                          "Found bad character(s) in name, repaired: [%4.4s]\n",
                                          ACPI_CAST_PTR(char, &target_name)));
                }
diff --git a/drivers/acpi/namespace/nsxfeval.c b/drivers/acpi/namespace/nsxfeval.c
index 38be5865d95d..a085cc39c055 100644
--- a/drivers/acpi/namespace/nsxfeval.c
+++ b/drivers/acpi/namespace/nsxfeval.c
@@ -48,6 +48,10 @@
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsxfeval")
+/* Local prototypes */
+static void acpi_ns_resolve_references(struct acpi_evaluate_info *info);
 #ifdef ACPI_FUTURE_USAGE
 /*******************************************************************************
 *
@@ -69,6 +73,7 @@ ACPI_MODULE_NAME("nsxfeval")
 *              be valid (non-null)
 *
 ******************************************************************************/
 acpi_status
 acpi_evaluate_object_typed(acpi_handle handle,
                           acpi_string pathname,
@@ -283,6 +288,10 @@ acpi_evaluate_object(acpi_handle handle,
                        if (ACPI_SUCCESS(status)) {
+                                /* Dereference Index and ref_of references */
+                                acpi_ns_resolve_references(info);
                                /* Get the size of the returned object */
                                status =
@@ -352,6 +361,74 @@ ACPI_EXPORT_SYMBOL(acpi_evaluate_object)
 /*******************************************************************************
 *
+ * FUNCTION:    acpi_ns_resolve_references
+ *
+ * PARAMETERS:  Info                    - Evaluation info block
+ *
+ * RETURN:      Info->return_object is replaced with the dereferenced object
+ *
+ * DESCRIPTION: Dereference certain reference objects. Called before an
+ *              internal return object is converted to an external union acpi_object.
+ *
+ * Performs an automatic dereference of Index and ref_of reference objects.
+ * These reference objects are not supported by the union acpi_object, so this is a
+ * last resort effort to return something useful. Also, provides compatibility
+ * with other ACPI implementations.
+ *
+ * NOTE: does not handle references within returned package objects or nested
+ * references, but this support could be added later if found to be necessary.
+ *
+ ******************************************************************************/
+static void acpi_ns_resolve_references(struct acpi_evaluate_info *info)
+{
+        union acpi_operand_object *obj_desc = NULL;
+        struct acpi_namespace_node *node;
+        /* We are interested in reference objects only */
+        if (ACPI_GET_OBJECT_TYPE(info->return_object) !=
+            ACPI_TYPE_LOCAL_REFERENCE) {
+                return;
+        }
+        /*
+         * Two types of references are supported - those created by Index and
+         * ref_of operators. A name reference (AML_NAMEPATH_OP) can be converted
+         * to an union acpi_object, so it is not dereferenced here. A ddb_handle
+         * (AML_LOAD_OP) cannot be dereferenced, nor can it be converted to
+         * an union acpi_object.
+         */
+        switch (info->return_object->reference.class) {
+        case ACPI_REFCLASS_INDEX:
+                obj_desc = *(info->return_object->reference.where);
+                break;
+        case ACPI_REFCLASS_REFOF:
+                node = info->return_object->reference.object;
+                if (node) {
+                        obj_desc = node->object;
+                }
+                break;
+        default:
+                return;
+        }
+        /* Replace the existing reference object */
+        if (obj_desc) {
+                acpi_ut_add_reference(obj_desc);
+                acpi_ut_remove_reference(info->return_object);
+                info->return_object = obj_desc;
+        }
+        return;
+}
+/*******************************************************************************
+ *
 * FUNCTION:    acpi_walk_namespace
 *
 * PARAMETERS:  Type                - acpi_object_type to search for
@@ -379,6 +456,7 @@ ACPI_EXPORT_SYMBOL(acpi_evaluate_object)
 *              function, etc.
 *
 ******************************************************************************/
 acpi_status
 acpi_walk_namespace(acpi_object_type type,
                    acpi_handle start_object,
diff --git a/drivers/acpi/namespace/nsxfname.c b/drivers/acpi/namespace/nsxfname.c
index a287ed550f54..5efa4e7ddb0b 100644
--- a/drivers/acpi/namespace/nsxfname.c
+++ b/drivers/acpi/namespace/nsxfname.c
@@ -253,6 +253,7 @@ acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer)
        node = acpi_ns_map_handle_to_node(handle);
        if (!node) {
                (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+                status = AE_BAD_PARAMETER;
                goto cleanup;
        }
@@ -264,6 +265,10 @@ acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer)
        info->name = node->name.integer;
        info->valid = 0;
+        if (node->type == ACPI_TYPE_METHOD) {
+                info->param_count = node->object->method.param_count;
+        }
        status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
        if (ACPI_FAILURE(status)) {
                goto cleanup;
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 235a1386888a..6234d3e7acd3 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -682,6 +682,22 @@ static void acpi_os_execute_deferred(struct work_struct *work)
        return;
 }
+static void acpi_os_execute_hp_deferred(struct work_struct *work)
+{
+        struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work);
+        if (!dpc) {
+                printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
+                return;
+        }
+        acpi_os_wait_events_complete(NULL);
+        dpc->function(dpc->context);
+        kfree(dpc);
+        return;
+}
 /*******************************************************************************
 *
 * FUNCTION:    acpi_os_execute
@@ -697,12 +713,13 @@ static void acpi_os_execute_deferred(struct work_struct *work)
 *
 ******************************************************************************/
-acpi_status acpi_os_execute(acpi_execute_type type,
+static acpi_status __acpi_os_execute(acpi_execute_type type,
-                            acpi_osd_exec_callback function, void *context)
+        acpi_osd_exec_callback function, void *context, int hp)
 {
        acpi_status status = AE_OK;
        struct acpi_os_dpc *dpc;
        struct workqueue_struct *queue;
+        int ret;
        ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
                          "Scheduling function [%p(%p)] for deferred execution.\n",
                          function, context));
@@ -726,19 +743,38 @@ acpi_status acpi_os_execute(acpi_execute_type type,
        dpc->function = function;
        dpc->context = context;
-        INIT_WORK(&dpc->work, acpi_os_execute_deferred);
+        if (!hp) {
-        queue = (type == OSL_NOTIFY_HANDLER) ? kacpi_notify_wq : kacpid_wq;
+                INIT_WORK(&dpc->work, acpi_os_execute_deferred);
-        if (!queue_work(queue, &dpc->work)) {
+                queue = (type == OSL_NOTIFY_HANDLER) ?
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                        kacpi_notify_wq : kacpid_wq;
-                          "Call to queue_work() failed.\n"));
+                ret = queue_work(queue, &dpc->work);
+        } else {
+                INIT_WORK(&dpc->work, acpi_os_execute_hp_deferred);
+                ret = schedule_work(&dpc->work);
+        }
+        if (!ret) {
+                printk(KERN_ERR PREFIX
+                          "Call to queue_work() failed.\n");
                status = AE_ERROR;
                kfree(dpc);
        }
        return_ACPI_STATUS(status);
 }
+acpi_status acpi_os_execute(acpi_execute_type type,
+                            acpi_osd_exec_callback function, void *context)
+{
+        return __acpi_os_execute(type, function, context, 0);
+}
 EXPORT_SYMBOL(acpi_os_execute);
+acpi_status acpi_os_hotplug_execute(acpi_osd_exec_callback function,
+        void *context)
+{
+        return __acpi_os_execute(0, function, context, 1);
+}
 void acpi_os_wait_events_complete(void *context)
 {
        flush_workqueue(kacpid_wq);
diff --git a/drivers/acpi/parser/psloop.c b/drivers/acpi/parser/psloop.c
index c06238e55d98..4647039a0d8a 100644
--- a/drivers/acpi/parser/psloop.c
+++ b/drivers/acpi/parser/psloop.c
@@ -719,6 +719,8 @@ acpi_ps_complete_op(struct acpi_walk_state *walk_state,
                *op = NULL;
        }
+        ACPI_PREEMPTION_POINT();
        return_ACPI_STATUS(AE_OK);
 }
diff --git a/drivers/acpi/parser/psparse.c b/drivers/acpi/parser/psparse.c
index 15e1702e48d6..68e932f215ea 100644
--- a/drivers/acpi/parser/psparse.c
+++ b/drivers/acpi/parser/psparse.c
@@ -137,6 +137,7 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state,
        union acpi_parse_object *next;
        const struct acpi_opcode_info *parent_info;
        union acpi_parse_object *replacement_op = NULL;
+        acpi_status status = AE_OK;
        ACPI_FUNCTION_TRACE_PTR(ps_complete_this_op, op);
@@ -186,7 +187,7 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state,
                        replacement_op =
                            acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP);
                        if (!replacement_op) {
-                                goto allocate_error;
+                                status = AE_NO_MEMORY;
                        }
                        break;
@@ -211,7 +212,7 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state,
                                replacement_op =
                                    acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP);
                                if (!replacement_op) {
-                                        goto allocate_error;
+                                        status = AE_NO_MEMORY;
                                }
                        } else
                            if ((op->common.parent->common.aml_opcode ==
@@ -226,13 +227,13 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state,
                                            acpi_ps_alloc_op(op->common.
                                                             aml_opcode);
                                        if (!replacement_op) {
-                                                goto allocate_error;
+                                                status = AE_NO_MEMORY;
+                                        } else {
+                                                replacement_op->named.data =
+                                                    op->named.data;
+                                                replacement_op->named.length =
+                                                    op->named.length;
                                        }
-                                        replacement_op->named.data =
-                                            op->named.data;
-                                        replacement_op->named.length =
-                                            op->named.length;
                                }
                        }
                        break;
@@ -242,7 +243,7 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state,
                        replacement_op =
                            acpi_ps_alloc_op(AML_INT_RETURN_VALUE_OP);
                        if (!replacement_op) {
-                                goto allocate_error;
+                                status = AE_NO_MEMORY;
                        }
                }
@@ -302,14 +303,7 @@ acpi_ps_complete_this_op(struct acpi_walk_state * walk_state,
        /* Now we can actually delete the subtree rooted at Op */
        acpi_ps_delete_parse_tree(op);
-        return_ACPI_STATUS(AE_OK);
+        return_ACPI_STATUS(status);
-      allocate_error:
-        /* Always delete the subtree, even on error */
-        acpi_ps_delete_parse_tree(op);
-        return_ACPI_STATUS(AE_NO_MEMORY);
 }
 /*******************************************************************************
@@ -641,10 +635,12 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
                                            ACPI_WALK_METHOD_RESTART;
                                }
                        } else {
-                                /* On error, delete any return object */
+                                /* On error, delete any return object or implicit return */
                                acpi_ut_remove_reference(previous_walk_state->
                                                         return_desc);
+                                acpi_ds_clear_implicit_return
+                                    (previous_walk_state);
                        }
                }
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index cf47805a7448..fcfdef7b4fdd 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -709,7 +709,7 @@ int acpi_pci_link_free_irq(acpi_handle handle)
                          acpi_device_bid(link->device)));
        if (link->refcnt == 0) {
-                acpi_ut_evaluate_object(link->device->handle, "_DIS", 0, NULL);
+                acpi_evaluate_object(link->device->handle, "_DIS", NULL, NULL);
        }
        mutex_unlock(&acpi_link_lock);
        return (link->irq.active);
@@ -737,7 +737,7 @@ static int acpi_pci_link_add(struct acpi_device *device)
        link->device = device;
        strcpy(acpi_device_name(device), ACPI_PCI_LINK_DEVICE_NAME);
        strcpy(acpi_device_class(device), ACPI_PCI_LINK_CLASS);
-        acpi_driver_data(device) = link;
+        device->driver_data = link;
        mutex_lock(&acpi_link_lock);
        result = acpi_pci_link_get_possible(link);
@@ -773,7 +773,7 @@ static int acpi_pci_link_add(struct acpi_device *device)
      end:
        /* disable all links -- to be activated on use */
-        acpi_ut_evaluate_object(device->handle, "_DIS", 0, NULL);
+        acpi_evaluate_object(device->handle, "_DIS", NULL, NULL);
        mutex_unlock(&acpi_link_lock);
        if (result)
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index c3fed31166b5..add1a19bbbfe 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -206,7 +206,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
        root->device = device;
        strcpy(acpi_device_name(device), ACPI_PCI_ROOT_DEVICE_NAME);
        strcpy(acpi_device_class(device), ACPI_PCI_ROOT_CLASS);
-        acpi_driver_data(device) = root;
+        device->driver_data = root;
        device->ops.bind = acpi_pci_bind;
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 4ab21cb1c8c7..e88edc008668 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -54,6 +54,14 @@ ACPI_MODULE_NAME("power");
 #define ACPI_POWER_RESOURCE_STATE_OFF   0x00
 #define ACPI_POWER_RESOURCE_STATE_ON    0x01
 #define ACPI_POWER_RESOURCE_STATE_UNKNOWN 0xFF
+#ifdef MODULE_PARAM_PREFIX
+#undef MODULE_PARAM_PREFIX
+#endif
+#define MODULE_PARAM_PREFIX "acpi."
+int acpi_power_nocheck;
+module_param_named(power_nocheck, acpi_power_nocheck, bool, 000);
 static int acpi_power_add(struct acpi_device *device);
 static int acpi_power_remove(struct acpi_device *device, int type);
 static int acpi_power_resume(struct acpi_device *device);
@@ -128,16 +136,16 @@ acpi_power_get_context(acpi_handle handle,
        return 0;
 }
-static int acpi_power_get_state(struct acpi_power_resource *resource, int *state)
+static int acpi_power_get_state(acpi_handle handle, int *state)
 {
        acpi_status status = AE_OK;
        unsigned long sta = 0;
-        if (!resource || !state)
+        if (!handle || !state)
                return -EINVAL;
-        status = acpi_evaluate_integer(resource->device->handle, "_STA", NULL, &sta);
+        status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
        if (ACPI_FAILURE(status))
                return -ENODEV;
@@ -145,7 +153,7 @@ static int acpi_power_get_state(struct acpi_power_resource *resource, int *state
                              ACPI_POWER_RESOURCE_STATE_OFF;
        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] is %s\n",
-                          resource->name, state ? "on" : "off"));
+                          acpi_ut_get_node_name(handle), state ? "on" : "off"));
        return 0;
 }
@@ -153,7 +161,6 @@ static int acpi_power_get_state(struct acpi_power_resource *resource, int *state
 static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state)
 {
        int result = 0, state1;
-        struct acpi_power_resource *resource = NULL;
        u32 i = 0;
@@ -161,12 +168,15 @@ static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state)
                return -EINVAL;
        /* The state of the list is 'on' IFF all resources are 'on'. */
+        /* */
        for (i = 0; i < list->count; i++) {
-                result = acpi_power_get_context(list->handles[i], &resource);
+                /*
-                if (result)
+                 * The state of the power resource can be obtained by
-                        return result;
+                 * using the ACPI handle. In such case it is unnecessary to
-                result = acpi_power_get_state(resource, &state1);
+                 * get the Power resource first and then get its state again.
+                 */
+                result = acpi_power_get_state(list->handles[i], &state1);
                if (result)
                        return result;
@@ -226,12 +236,18 @@ static int acpi_power_on(acpi_handle handle, struct acpi_device *dev)
        if (ACPI_FAILURE(status))
                return -ENODEV;
-        result = acpi_power_get_state(resource, &state);
+        if (!acpi_power_nocheck) {
-        if (result)
+                /*
-                return result;
+                 * If acpi_power_nocheck is set, it is unnecessary to check
-        if (state != ACPI_POWER_RESOURCE_STATE_ON)
+                 * the power state after power transition.
-                return -ENOEXEC;
+                 */
+                result = acpi_power_get_state(resource->device->handle,
+                                &state);
+                if (result)
+                        return result;
+                if (state != ACPI_POWER_RESOURCE_STATE_ON)
+                        return -ENOEXEC;
+        }
        /* Update the power resource's _device_ power state */
        resource->device->power.state = ACPI_STATE_D0;
@@ -277,11 +293,17 @@ static int acpi_power_off_device(acpi_handle handle, struct acpi_device *dev)
        if (ACPI_FAILURE(status))
                return -ENODEV;
-        result = acpi_power_get_state(resource, &state);
+        if (!acpi_power_nocheck) {
-        if (result)
+                /*
-                return result;
+                 * If acpi_power_nocheck is set, it is unnecessary to check
-        if (state != ACPI_POWER_RESOURCE_STATE_OFF)
+                 * the power state after power transition.
-                return -ENOEXEC;
+                 */
+                result = acpi_power_get_state(handle, &state);
+                if (result)
+                        return result;
+                if (state != ACPI_POWER_RESOURCE_STATE_OFF)
+                        return -ENOEXEC;
+        }
        /* Update the power resource's _device_ power state */
        resource->device->power.state = ACPI_STATE_D3;
@@ -555,7 +577,7 @@ static int acpi_power_seq_show(struct seq_file *seq, void *offset)
        if (!resource)
                goto end;
-        result = acpi_power_get_state(resource, &state);
+        result = acpi_power_get_state(resource->device->handle, &state);
        if (result)
                goto end;
@@ -657,7 +679,7 @@ static int acpi_power_add(struct acpi_device *device)
        strcpy(resource->name, device->pnp.bus_id);
        strcpy(acpi_device_name(device), ACPI_POWER_DEVICE_NAME);
        strcpy(acpi_device_class(device), ACPI_POWER_CLASS);
-        acpi_driver_data(device) = resource;
+        device->driver_data = resource;
        /* Evalute the object to get the system level and resource order. */
        status = acpi_evaluate_object(device->handle, NULL, NULL, &buffer);
@@ -668,7 +690,7 @@ static int acpi_power_add(struct acpi_device *device)
        resource->system_level = acpi_object.power_resource.system_level;
        resource->order = acpi_object.power_resource.resource_order;
-        result = acpi_power_get_state(resource, &state);
+        result = acpi_power_get_state(device->handle, &state);
        if (result)
                goto end;
@@ -733,9 +755,9 @@ static int acpi_power_resume(struct acpi_device *device)
        if (!device || !acpi_driver_data(device))
                return -EINVAL;
-        resource = (struct acpi_power_resource *)acpi_driver_data(device);
+        resource = acpi_driver_data(device);
-        result = acpi_power_get_state(resource, &state);
+        result = acpi_power_get_state(device->handle, &state);
        if (result)
                return result;
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index ee68ac54c0d4..289461649196 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -818,7 +818,7 @@ static int acpi_processor_add(struct acpi_device *device)
        pr->handle = device->handle;
        strcpy(acpi_device_name(device), ACPI_PROCESSOR_DEVICE_NAME);
        strcpy(acpi_device_class(device), ACPI_PROCESSOR_CLASS);
-        acpi_driver_data(device) = pr;
+        device->driver_data = pr;
        return 0;
 }
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index cf5b1b7b684f..81b40ed5379e 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -1587,6 +1587,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
        if (acpi_idle_bm_check()) {
                if (dev->safe_state) {
+                        dev->last_state = dev->safe_state;
                        return dev->safe_state->enter(dev, dev->safe_state);
                } else {
                        local_irq_disable();
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 80c251ec6d2a..b0614f379470 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -38,6 +38,7 @@
 #include <asm/uaccess.h>
 #endif
+#include <asm/cpufeature.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/processor.h>
@@ -334,7 +335,6 @@ static int acpi_processor_get_performance_info(struct acpi_processor *pr)
        acpi_status status = AE_OK;
        acpi_handle handle = NULL;
        if (!pr || !pr->performance || !pr->handle)
                return -EINVAL;
@@ -347,13 +347,25 @@ static int acpi_processor_get_performance_info(struct acpi_processor *pr)
        result = acpi_processor_get_performance_control(pr);
        if (result)
-                return result;
+                goto update_bios;
        result = acpi_processor_get_performance_states(pr);
        if (result)
-                return result;
+                goto update_bios;
        return 0;
+        /*
+         * Having _PPC but missing frequencies (_PSS, _PCT) is a very good hint that
+         * the BIOS is older than the CPU and does not know its frequencies
+         */
+ update_bios:
+        if (ACPI_SUCCESS(acpi_get_handle(pr->handle, "_PPC", &handle))){
+                if(boot_cpu_has(X86_FEATURE_EST))
+                        printk(KERN_WARNING FW_BUG "BIOS needs update for CPU "
+                               "frequency support\n");
+        }
+        return result;
 }
 int acpi_processor_notify_smm(struct module *calling_module)
@@ -524,13 +536,13 @@ static int acpi_processor_get_psd(struct acpi_processor	*pr)
        psd = buffer.pointer;
        if (!psd || (psd->type != ACPI_TYPE_PACKAGE)) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _PSD data\n"));
+                printk(KERN_ERR PREFIX "Invalid _PSD data\n");
                result = -EFAULT;
                goto end;
        }
        if (psd->package.count != 1) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _PSD data\n"));
+                printk(KERN_ERR PREFIX "Invalid _PSD data\n");
                result = -EFAULT;
                goto end;
        }
@@ -543,19 +555,19 @@ static int acpi_processor_get_psd(struct acpi_processor	*pr)
        status = acpi_extract_package(&(psd->package.elements[0]),
                &format, &state);
        if (ACPI_FAILURE(status)) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _PSD data\n"));
+                printk(KERN_ERR PREFIX "Invalid _PSD data\n");
                result = -EFAULT;
                goto end;
        }
        if (pdomain->num_entries != ACPI_PSD_REV0_ENTRIES) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unknown _PSD:num_entries\n"));
+                printk(KERN_ERR PREFIX "Unknown _PSD:num_entries\n");
                result = -EFAULT;
                goto end;
        }
        if (pdomain->revision != ACPI_PSD_REV0_REVISION) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unknown _PSD:revision\n"));
+                printk(KERN_ERR PREFIX "Unknown _PSD:revision\n");
                result = -EFAULT;
                goto end;
        }
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index a56fc6c4394b..e89a25824f2a 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -528,13 +528,13 @@ static int acpi_processor_get_tsd(struct acpi_processor *pr)
        tsd = buffer.pointer;
        if (!tsd || (tsd->type != ACPI_TYPE_PACKAGE)) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _TSD data\n"));
+                printk(KERN_ERR PREFIX "Invalid _TSD data\n");
                result = -EFAULT;
                goto end;
        }
        if (tsd->package.count != 1) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _TSD data\n"));
+                printk(KERN_ERR PREFIX "Invalid _TSD data\n");
                result = -EFAULT;
                goto end;
        }
@@ -547,19 +547,19 @@ static int acpi_processor_get_tsd(struct acpi_processor *pr)
        status = acpi_extract_package(&(tsd->package.elements[0]),
                                      &format, &state);
        if (ACPI_FAILURE(status)) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _TSD data\n"));
+                printk(KERN_ERR PREFIX "Invalid _TSD data\n");
                result = -EFAULT;
                goto end;
        }
        if (pdomain->num_entries != ACPI_TSD_REV0_ENTRIES) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unknown _TSD:num_entries\n"));
+                printk(KERN_ERR PREFIX "Unknown _TSD:num_entries\n");
                result = -EFAULT;
                goto end;
        }
        if (pdomain->revision != ACPI_TSD_REV0_REVISION) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unknown _TSD:revision\n"));
+                printk(KERN_ERR PREFIX "Unknown _TSD:revision\n");
                result = -EFAULT;
                goto end;
        }
diff --git a/drivers/acpi/reboot.c b/drivers/acpi/reboot.c
index a6b662c00b67..755baf2ca70a 100644
--- a/drivers/acpi/reboot.c
+++ b/drivers/acpi/reboot.c
@@ -15,9 +15,28 @@ void acpi_reboot(void)
        rr = &acpi_gbl_FADT.reset_register;
-        /* Is the reset register supported? */
+        /*
-        if (!(acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER) ||
+         * Is the ACPI reset register supported?
-            rr->bit_width != 8 || rr->bit_offset != 0)
+         *
+         * According to ACPI 3.0, FADT.flags.RESET_REG_SUP indicates
+         * whether the ACPI reset mechanism is supported.
+         *
+         * However, some boxes have this bit clear, yet a valid
+         * ACPI_RESET_REG & RESET_VALUE, and ACPI reboot is the only
+         * mechanism that works for them after S3.
+         *
+         * This suggests that other operating systems may not be checking
+         * the RESET_REG_SUP bit, and are using other means to decide
+         * whether to use the ACPI reboot mechanism or not.
+         *
+         * So when acpi reboot is requested,
+         * only the reset_register is checked. If the following
+         * conditions are met, it indicates that the reset register is supported.
+         *      a. reset_register is not zero
+         *      b. the access width is eight
+         *      c. the bit_offset is zero
+         */
+        if (!(rr->address) || rr->bit_width != 8 || rr->bit_offset != 0)
                return;
        reset_value = acpi_gbl_FADT.reset_value;
diff --git a/drivers/acpi/resources/rscalc.c b/drivers/acpi/resources/rscalc.c
index d9063ea414e3..8eaaecf92009 100644
--- a/drivers/acpi/resources/rscalc.c
+++ b/drivers/acpi/resources/rscalc.c
@@ -43,7 +43,6 @@
 #include <acpi/acpi.h>
 #include <acpi/acresrc.h>
-#include <acpi/amlcode.h>
 #include <acpi/acnamesp.h>
 #define _COMPONENT          ACPI_RESOURCES
@@ -560,8 +559,8 @@ acpi_rs_get_pci_routing_table_length(union acpi_operand_object *package_object,
                              ACPI_GET_OBJECT_TYPE(*sub_object_list)) ||
                             ((ACPI_TYPE_LOCAL_REFERENCE ==
                               ACPI_GET_OBJECT_TYPE(*sub_object_list)) &&
-                              ((*sub_object_list)->reference.opcode ==
+                              ((*sub_object_list)->reference.class ==
-                               AML_INT_NAMEPATH_OP)))) {
+                               ACPI_REFCLASS_NAME)))) {
                                name_found = TRUE;
                        } else {
                                /* Look at the next element */
diff --git a/drivers/acpi/resources/rscreate.c b/drivers/acpi/resources/rscreate.c
index 7804a8c40e7a..c0bbfa2c4193 100644
--- a/drivers/acpi/resources/rscreate.c
+++ b/drivers/acpi/resources/rscreate.c
@@ -43,7 +43,6 @@
 #include <acpi/acpi.h>
 #include <acpi/acresrc.h>
-#include <acpi/amlcode.h>
 #include <acpi/acnamesp.h>
 #define _COMPONENT          ACPI_RESOURCES
@@ -310,13 +309,12 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
                        switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
                        case ACPI_TYPE_LOCAL_REFERENCE:
-                                if (obj_desc->reference.opcode !=
+                                if (obj_desc->reference.class !=
-                                    AML_INT_NAMEPATH_OP) {
+                                    ACPI_REFCLASS_NAME) {
                                        ACPI_ERROR((AE_INFO,
-                                                    "(PRT[%X].Source) Need name, found reference op %X",
+                                                    "(PRT[%X].Source) Need name, found Reference Class %X",
                                                    index,
-                                                    obj_desc->reference.
+                                                    obj_desc->reference.class));
-                                                    opcode));
                                        return_ACPI_STATUS(AE_BAD_DATA);
                                }
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index 10a36512647c..d0033250b5a9 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -931,7 +931,7 @@ static int acpi_sbs_add(struct acpi_device *device)
        sbs->device = device;
        strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
        strcpy(acpi_device_class(device), ACPI_SBS_CLASS);
-        acpi_driver_data(device) = sbs;
+        device->driver_data = sbs;
        result = acpi_charger_add(sbs);
        if (result)
diff --git a/drivers/acpi/sbshc.c b/drivers/acpi/sbshc.c
index a4e3767b8c64..001d9143a2cb 100644
--- a/drivers/acpi/sbshc.c
+++ b/drivers/acpi/sbshc.c
@@ -282,7 +282,7 @@ static int acpi_smbus_hc_add(struct acpi_device *device)
        hc->ec = acpi_driver_data(device->parent);
        hc->offset = (val >> 8) & 0xff;
        hc->query_bit = val & 0xff;
-        acpi_driver_data(device) = hc;
+        device->driver_data = hc;
        acpi_ec_add_query_handler(hc->ec, hc->query_bit, NULL, smbus_alarm, hc);
        printk(KERN_INFO PREFIX "SBS HC: EC = 0x%p, offset = 0x%0x, query_bit = 0x%0x\n",
@@ -303,7 +303,7 @@ static int acpi_smbus_hc_remove(struct acpi_device *device, int type)
        hc = acpi_driver_data(device);
        acpi_ec_remove_query_handler(hc->ec, hc->query_bit);
        kfree(hc);
-        acpi_driver_data(device) = NULL;
+        device->driver_data = NULL;
        return 0;
 }
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index f6f52c1a2aba..a9dda8e0f9f9 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -113,16 +113,16 @@ static int acpi_bus_hot_remove_device(void *context)
        if (acpi_bus_trim(device, 1)) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                printk(KERN_ERR PREFIX
-                                "Removing device failed\n"));
+                                "Removing device failed\n");
                return -1;
        }
        /* power off device */
        status = acpi_evaluate_object(handle, "_PS3", NULL, NULL);
        if (ACPI_FAILURE(status) && status != AE_NOT_FOUND)
-                ACPI_DEBUG_PRINT((ACPI_DB_WARN,
+                printk(KERN_WARNING PREFIX
-                                "Power-off device failed\n"));
+                                "Power-off device failed\n");
        if (device->flags.lockable) {
                arg_list.count = 1;
@@ -276,6 +276,13 @@ int acpi_match_device_ids(struct acpi_device *device,
 {
        const struct acpi_device_id *id;
+        /*
+         * If the device is not present, it is unnecessary to load device
+         * driver for it.
+         */
+        if (!device->status.present)
+                return -ENODEV;
        if (device->flags.hardware_id) {
                for (id = ids; id->id[0]; id++) {
                        if (!strcmp((char*)id->id, device->pnp.hardware_id))
@@ -384,7 +391,7 @@ static int acpi_device_remove(struct device * dev)
                        acpi_drv->ops.remove(acpi_dev, acpi_dev->removal_type);
        }
        acpi_dev->driver = NULL;
-        acpi_driver_data(dev) = NULL;
+        acpi_dev->driver_data = NULL;
        put_device(dev);
        return 0;
@@ -477,7 +484,7 @@ static int acpi_device_register(struct acpi_device *device,
        result = acpi_device_setup_files(device);
        if(result)
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error creating sysfs interface for device %s\n", device->dev.bus_id));
+                printk(KERN_ERR PREFIX "Error creating sysfs interface for device %s\n", device->dev.bus_id);
        device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
        return 0;
@@ -537,7 +544,7 @@ acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
        result = driver->ops.add(device);
        if (result) {
                device->driver = NULL;
-                acpi_driver_data(device) = NULL;
+                device->driver_data = NULL;
                return result;
        }
@@ -744,6 +751,16 @@ static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
        if (!acpi_match_device_ids(device, button_device_ids))
                device->wakeup.flags.run_wake = 1;
+        /*
+         * Don't set Power button GPE as run_wake
+         * if Fixed Power button is used
+         */
+        if (!strcmp(device->pnp.hardware_id, "PNP0C0C") &&
+                !(acpi_gbl_FADT.flags & ACPI_FADT_POWER_BUTTON)) {
+                device->wakeup.flags.run_wake = 0;
+                device->wakeup.flags.valid = 0;
+        }
      end:
        if (ACPI_FAILURE(status))
                device->flags.wake_capable = 0;
@@ -807,6 +824,7 @@ static int acpi_bus_get_power_flags(struct acpi_device *device)
        /* TBD: System wake support and resource requirements. */
        device->power.state = ACPI_STATE_UNKNOWN;
+        acpi_bus_get_power(device->handle, &(device->power.state));
        return 0;
 }
@@ -1153,20 +1171,6 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
 }
 static int
-acpi_is_child_device(struct acpi_device *device,
-                        int (*matcher)(struct acpi_device *))
-{
-        int result = -ENODEV;
-        do {
-                if (ACPI_SUCCESS(matcher(device)))
-                        return AE_OK;
-        } while ((device = device->parent));
-        return result;
-}
-static int
 acpi_add_single_object(struct acpi_device **child,
                       struct acpi_device *parent, acpi_handle handle, int type,
                        struct acpi_bus_ops *ops)
@@ -1221,15 +1225,18 @@ acpi_add_single_object(struct acpi_device **child,
                        result = -ENODEV;
                        goto end;
                }
-                if (!device->status.present) {
+                /*
-                        /* Bay and dock should be handled even if absent */
+                 * When the device is neither present nor functional, the
-                        if (!ACPI_SUCCESS(
+                 * device should not be added to Linux ACPI device tree.
-                             acpi_is_child_device(device, acpi_bay_match)) &&
+                 * When the status of the device is not present but functinal,
-                            !ACPI_SUCCESS(
+                 * it should be added to Linux ACPI tree. For example : bay
-                             acpi_is_child_device(device, acpi_dock_match))) {
+                 * device , dock device.
-                                        result = -ENODEV;
+                 * In such conditions it is unncessary to check whether it is
-                                        goto end;
+                 * bay device or dock device.
-                        }
+                 */
+                if (!device->status.present && !device->status.functional) {
+                        result = -ENODEV;
+                        goto end;
                }
                break;
        default:
@@ -1252,6 +1259,16 @@ acpi_add_single_object(struct acpi_device **child,
        acpi_device_set_id(device, parent, handle, type);
        /*
+         * The ACPI device is attached to acpi handle before getting
+         * the power/wakeup/peformance flags. Otherwise OS can't get
+         * the corresponding ACPI device by the acpi handle in the course
+         * of getting the power/wakeup/performance flags.
+         */
+        result = acpi_device_set_context(device, type);
+        if (result)
+                goto end;
+        /*
         * Power Management
         * ----------------
         */
@@ -1281,8 +1298,6 @@ acpi_add_single_object(struct acpi_device **child,
                        goto end;
        }
-        if ((result = acpi_device_set_context(device, type)))
-                goto end;
        result = acpi_device_register(device, parent);
@@ -1402,7 +1417,12 @@ static int acpi_bus_scan(struct acpi_device *start, struct acpi_bus_ops *ops)
                 * TBD: Need notifications and other detection mechanisms
                 *      in place before we can fully implement this.
                 */
-                if (child->status.present) {
+                 /*
+                 * When the device is not present but functional, it is also
+                 * necessary to scan the children of this device.
+                 */
+                if (child->status.present || (!child->status.present &&
+                                        child->status.functional)) {
                        status = acpi_get_next_object(ACPI_TYPE_ANY, chandle,
                                                      NULL, NULL);
                        if (ACPI_SUCCESS(status)) {
@@ -1545,7 +1565,6 @@ static int acpi_bus_scan_fixed(struct acpi_device *root)
        return result;
 }
-int __init acpi_boot_ec_enable(void);
 static int __init acpi_scan_init(void)
 {
@@ -1579,9 +1598,6 @@ static int __init acpi_scan_init(void)
         */
        result = acpi_bus_scan_fixed(acpi_root);
-        /* EC region might be needed at bus_scan, so enable it now */
-        acpi_boot_ec_enable();
        if (!result)
                result = acpi_bus_scan(acpi_root, &ops);
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index d13194a031bf..4c21480b5820 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -23,6 +23,7 @@
 #include "sleep.h"
 u8 sleep_states[ACPI_S_STATE_COUNT];
+static u32 acpi_target_sleep_state = ACPI_STATE_S0;
 static int acpi_sleep_prepare(u32 acpi_state)
 {
@@ -45,9 +46,7 @@ static int acpi_sleep_prepare(u32 acpi_state)
        return 0;
 }
-#ifdef CONFIG_PM_SLEEP
+#ifdef CONFIG_ACPI_SLEEP
-static u32 acpi_target_sleep_state = ACPI_STATE_S0;
 /*
 * ACPI 1.0 wants us to execute _PTS before suspending devices, so we allow the
 * user to request that behavior by using the 'acpi_old_suspend_ordering'
@@ -132,7 +131,7 @@ static void acpi_pm_end(void)
         */
        acpi_target_sleep_state = ACPI_STATE_S0;
 }
-#endif /* CONFIG_PM_SLEEP */
+#endif /* CONFIG_ACPI_SLEEP */
 #ifdef CONFIG_SUSPEND
 extern void do_suspend_lowlevel(void);
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 91dec448b3ed..3eefd6d029f9 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -387,8 +387,8 @@ static ssize_t counter_set(struct kobject *kobj,
                goto end;
        if (!(all_counters[index].flags & ACPI_EVENT_VALID)) {
-                ACPI_DEBUG_PRINT((ACPI_DB_WARN,
+                printk(KERN_WARNING PREFIX
-                        "Can not change Invalid GPE/Fixed Event status\n"));
+                        "Can not change Invalid GPE/Fixed Event status\n");
                return -EINVAL;
        }
diff --git a/drivers/acpi/tables/tbfadt.c b/drivers/acpi/tables/tbfadt.c
index a4a41ba2484b..2c7885e7ffba 100644
--- a/drivers/acpi/tables/tbfadt.c
+++ b/drivers/acpi/tables/tbfadt.c
@@ -50,7 +50,7 @@ ACPI_MODULE_NAME("tbfadt")
 /* Local prototypes */
 static void inline
 acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,
-                             u8 bit_width, u64 address);
+                             u8 byte_width, u64 address);
 static void acpi_tb_convert_fadt(void);
@@ -111,7 +111,7 @@ static struct acpi_fadt_info fadt_info_table[] = {
 * FUNCTION:    acpi_tb_init_generic_address
 *
 * PARAMETERS:  generic_address     - GAS struct to be initialized
- *              bit_width           - Width of this register
+ *              byte_width          - Width of this register
 *              Address             - Address of the register
 *
 * RETURN:      None
@@ -124,7 +124,7 @@ static struct acpi_fadt_info fadt_info_table[] = {
 static void inline
 acpi_tb_init_generic_address(struct acpi_generic_address *generic_address,
-                             u8 bit_width, u64 address)
+                             u8 byte_width, u64 address)
 {
        /*
@@ -136,7 +136,7 @@ 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 = bit_width;
+        generic_address->bit_width = byte_width << 3;
        generic_address->bit_offset = 0;
        generic_address->access_width = 0;
 }
@@ -342,9 +342,20 @@ static void acpi_tb_convert_fadt(void)
         * useful to calculate them once, here.
         *
         * The PM event blocks are split into two register blocks, first is the
-         * PM Status Register block, followed immediately by the PM Enable Register
+         * PM Status Register block, followed immediately by the PM Enable
-         * block. Each is of length (pm1_event_length/2)
+         * Register block. Each is of length (xpm1x_event_block.bit_width/2).
+         *
+         * On various systems the v2 fields (and particularly the bit widths)
+         * cannot be relied upon, though. Hence resort to using the v1 length
+         * here (and warn about the inconsistency).
         */
+        if (acpi_gbl_FADT.xpm1a_event_block.bit_width
+            != acpi_gbl_FADT.pm1_event_length * 8)
+                printk(KERN_WARNING "FADT: "
+                       "X_PM1a_EVT_BLK.bit_width (%u) does not match"
+                       " 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 */
@@ -360,13 +371,20 @@ static void acpi_tb_convert_fadt(void)
        /* The PM1B register block is optional, ignore if not present */
        if (acpi_gbl_FADT.xpm1b_event_block.address) {
+                if (acpi_gbl_FADT.xpm1b_event_block.bit_width
+                    != acpi_gbl_FADT.pm1_event_length * 8)
+                        printk(KERN_WARNING "FADT: "
+                               "X_PM1b_EVT_BLK.bit_width (%u) does not match"
+                               " PM1_EVT_LEN (%u)\n",
+                               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.
                                              address + pm1_register_length));
                /* Don't forget to copy space_id of the GAS */
                acpi_gbl_xpm1b_enable.space_id =
-                    acpi_gbl_FADT.xpm1a_event_block.space_id;
+                    acpi_gbl_FADT.xpm1b_event_block.space_id;
        }
 }
diff --git a/drivers/acpi/tables/tbinstal.c b/drivers/acpi/tables/tbinstal.c
index b22185f55a16..18747ce8dd2f 100644
--- a/drivers/acpi/tables/tbinstal.c
+++ b/drivers/acpi/tables/tbinstal.c
@@ -110,7 +110,6 @@ acpi_status
 acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index)
 {
        u32 i;
-        u32 length;
        acpi_status status = AE_OK;
        ACPI_FUNCTION_TRACE(tb_add_table);
@@ -145,25 +144,64 @@ acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index)
                        }
                }
-                length = ACPI_MIN(table_desc->length,
+                /*
-                                  acpi_gbl_root_table_list.tables[i].length);
+                 * Check for a table match on the entire table length,
+                 * not just the header.
+                 */
+                if (table_desc->length !=
+                    acpi_gbl_root_table_list.tables[i].length) {
+                        continue;
+                }
                if (ACPI_MEMCMP(table_desc->pointer,
                                acpi_gbl_root_table_list.tables[i].pointer,
-                                length)) {
+                                acpi_gbl_root_table_list.tables[i].length)) {
                        continue;
                }
-                /* Table is already registered */
+                /*
+                 * Note: the current mechanism does not unregister a table if it is
+                 * dynamically unloaded. The related namespace entries are deleted,
+                 * but the table remains in the root table list.
+                 *
+                 * The assumption here is that the number of different tables that
+                 * will be loaded is actually small, and there is minimal overhead
+                 * in just keeping the table in case it is needed again.
+                 *
+                 * If this assumption changes in the future (perhaps on large
+                 * machines with many table load/unload operations), tables will
+                 * need to be unregistered when they are unloaded, and slots in the
+                 * root table list should be reused when empty.
+                 */
+                /*
+                 * Table is already registered.
+                 * We can delete the table that was passed as a parameter.
+                 */
                acpi_tb_delete_table(table_desc);
                *table_index = i;
-                status = AE_ALREADY_EXISTS;
-                goto release;
+                if (acpi_gbl_root_table_list.tables[i].
+                    flags & ACPI_TABLE_IS_LOADED) {
+                        /* Table is still loaded, this is an error */
+                        status = AE_ALREADY_EXISTS;
+                        goto release;
+                } else {
+                        /* Table was unloaded, allow it to be reloaded */
+                        table_desc->pointer =
+                            acpi_gbl_root_table_list.tables[i].pointer;
+                        table_desc->address =
+                            acpi_gbl_root_table_list.tables[i].address;
+                        status = AE_OK;
+                        goto print_header;
+                }
        }
-        /*
+        /* Add the table to the global root table list */
-         * Add the table to the global table list
-         */
        status = acpi_tb_store_table(table_desc->address, table_desc->pointer,
                                     table_desc->length, table_desc->flags,
                                     table_index);
@@ -171,6 +209,7 @@ acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index)
                goto release;
        }
+      print_header:
        acpi_tb_print_table_header(table_desc->address, table_desc->pointer);
      release:
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 912703691d36..f26c6463a09e 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -388,10 +388,12 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
                        } else if (crt > 0) {
                                unsigned long crt_k = CELSIUS_TO_KELVIN(crt);
                                /*
-                                 * Allow override to lower critical threshold
+                                 * Allow override critical threshold
                                 */
-                                if (crt_k < tz->trips.critical.temperature)
+                                if (crt_k > tz->trips.critical.temperature)
-                                        tz->trips.critical.temperature = crt_k;
+                                        printk(KERN_WARNING PREFIX
+                                                "Critical threshold %d C\n", crt);
+                                tz->trips.critical.temperature = crt_k;
                        }
                }
        }
@@ -1213,8 +1215,8 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
                                  acpi_bus_private_data_handler,
                                  tz->thermal_zone);
        if (ACPI_FAILURE(status)) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                printk(KERN_ERR PREFIX
-                                "Error attaching device data\n"));
+                                "Error attaching device data\n");
                return -ENODEV;
        }
@@ -1647,7 +1649,7 @@ static int acpi_thermal_add(struct acpi_device *device)
        strcpy(tz->name, device->pnp.bus_id);
        strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME);
        strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS);
-        acpi_driver_data(device) = tz;
+        device->driver_data = tz;
        mutex_init(&tz->lock);
diff --git a/drivers/acpi/toshiba_acpi.c b/drivers/acpi/toshiba_acpi.c
index 0a43c8e0eff3..4172d290f275 100644
--- a/drivers/acpi/toshiba_acpi.c
+++ b/drivers/acpi/toshiba_acpi.c
@@ -392,7 +392,7 @@ static unsigned long write_video(const char *buffer, unsigned long count)
        hci_read1(HCI_VIDEO_OUT, &video_out, &hci_result);
        if (hci_result == HCI_SUCCESS) {
-                int new_video_out = video_out;
+                unsigned int new_video_out = video_out;
                if (lcd_out != -1)
                        _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
                if (crt_out != -1)
diff --git a/drivers/acpi/utilities/utalloc.c b/drivers/acpi/utilities/utalloc.c
index 7dcb67e0b215..241c535c1753 100644
--- a/drivers/acpi/utilities/utalloc.c
+++ b/drivers/acpi/utilities/utalloc.c
@@ -232,7 +232,7 @@ acpi_status acpi_ut_validate_buffer(struct acpi_buffer * buffer)
 * RETURN:      Status
 *
 * DESCRIPTION: Validate that the buffer is of the required length or
- *              allocate a new buffer.  Returned buffer is always zeroed.
+ *              allocate a new buffer. Returned buffer is always zeroed.
 *
 ******************************************************************************/
@@ -240,7 +240,7 @@ acpi_status
 acpi_ut_initialize_buffer(struct acpi_buffer * buffer,
                          acpi_size required_length)
 {
-        acpi_status status = AE_OK;
+        acpi_size input_buffer_length;
        /* Parameter validation */
@@ -248,55 +248,58 @@ acpi_ut_initialize_buffer(struct acpi_buffer * buffer,
                return (AE_BAD_PARAMETER);
        }
-        switch (buffer->length) {
+        /*
+         * Buffer->Length is used as both an input and output parameter. Get the
+         * input actual length and set the output required buffer length.
+         */
+        input_buffer_length = buffer->length;
+        buffer->length = required_length;
+        /*
+         * The input buffer length contains the actual buffer length, or the type
+         * of buffer to be allocated by this routine.
+         */
+        switch (input_buffer_length) {
        case ACPI_NO_BUFFER:
-                /* Set the exception and returned the required length */
+                /* Return the exception (and the required buffer length) */
-                status = AE_BUFFER_OVERFLOW;
+                return (AE_BUFFER_OVERFLOW);
-                break;
        case ACPI_ALLOCATE_BUFFER:
                /* Allocate a new buffer */
                buffer->pointer = acpi_os_allocate(required_length);
-                if (!buffer->pointer) {
-                        return (AE_NO_MEMORY);
-                }
-                /* Clear the buffer */
-                ACPI_MEMSET(buffer->pointer, 0, required_length);
                break;
        case ACPI_ALLOCATE_LOCAL_BUFFER:
                /* Allocate a new buffer with local interface to allow tracking */
-                buffer->pointer = ACPI_ALLOCATE_ZEROED(required_length);
+                buffer->pointer = ACPI_ALLOCATE(required_length);
-                if (!buffer->pointer) {
-                        return (AE_NO_MEMORY);
-                }
                break;
        default:
                /* Existing buffer: Validate the size of the buffer */
-                if (buffer->length < required_length) {
+                if (input_buffer_length < required_length) {
-                        status = AE_BUFFER_OVERFLOW;
+                        return (AE_BUFFER_OVERFLOW);
-                        break;
                }
+                break;
+        }
-                /* Clear the buffer */
+        /* Validate allocation from above or input buffer pointer */
-                ACPI_MEMSET(buffer->pointer, 0, required_length);
+        if (!buffer->pointer) {
-                break;
+                return (AE_NO_MEMORY);
        }
-        buffer->length = required_length;
+        /* Have a valid buffer, clear it */
-        return (status);
+        ACPI_MEMSET(buffer->pointer, 0, required_length);
+        return (AE_OK);
 }
 #ifdef NOT_USED_BY_LINUX
diff --git a/drivers/acpi/utilities/utcopy.c b/drivers/acpi/utilities/utcopy.c
index 53499ac90988..5b2f7c27b705 100644
--- a/drivers/acpi/utilities/utcopy.c
+++ b/drivers/acpi/utilities/utcopy.c
@@ -42,7 +42,6 @@
 */
 #include <acpi/acpi.h>
-#include <acpi/amlcode.h>
 #include <acpi/acnamesp.h>
@@ -176,20 +175,24 @@ acpi_ut_copy_isimple_to_esimple(union acpi_operand_object *internal_object,
                /* This is an object reference. */
-                switch (internal_object->reference.opcode) {
+                switch (internal_object->reference.class) {
-                case AML_INT_NAMEPATH_OP:
+                case ACPI_REFCLASS_NAME:
-                        /* For namepath, return the object handle ("reference") */
-                default:
-                        /* We are referring to the namespace node */
+                        /*
+                         * For namepath, return the object handle ("reference")
+                         * We are referring to the namespace node
+                         */
                        external_object->reference.handle =
                            internal_object->reference.node;
                        external_object->reference.actual_type =
                            acpi_ns_get_type(internal_object->reference.node);
                        break;
+                default:
+                        /* All other reference types are unsupported */
+                        return_ACPI_STATUS(AE_TYPE);
                }
                break;
@@ -533,7 +536,7 @@ acpi_ut_copy_esimple_to_isimple(union acpi_object *external_object,
                /* TBD: should validate incoming handle */
-                internal_object->reference.opcode = AML_INT_NAMEPATH_OP;
+                internal_object->reference.class = ACPI_REFCLASS_NAME;
                internal_object->reference.node =
                    external_object->reference.handle;
                break;
@@ -743,11 +746,11 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc,
                 * We copied the reference object, so we now must add a reference
                 * to the object pointed to by the reference
                 *
-                 * DDBHandle reference (from Load/load_table is a special reference,
+                 * DDBHandle reference (from Load/load_table) is a special reference,
-                 * it's Reference.Object is the table index, so does not need to
+                 * it does not have a Reference.Object, so does not need to
                 * increase the reference count
                 */
-                if (source_desc->reference.opcode == AML_LOAD_OP) {
+                if (source_desc->reference.class == ACPI_REFCLASS_TABLE) {
                        break;
                }
diff --git a/drivers/acpi/utilities/utdelete.c b/drivers/acpi/utilities/utdelete.c
index 42609d3a8aa9..d197c6b29e17 100644
--- a/drivers/acpi/utilities/utdelete.c
+++ b/drivers/acpi/utilities/utdelete.c
@@ -45,7 +45,6 @@
 #include <acpi/acinterp.h>
 #include <acpi/acnamesp.h>
 #include <acpi/acevents.h>
-#include <acpi/amlcode.h>
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utdelete")
@@ -548,8 +547,8 @@ acpi_ut_update_object_reference(union acpi_operand_object *object, u16 action)
                         * reference must track changes to the ref count of the index or
                         * target object.
                         */
-                        if ((object->reference.opcode == AML_INDEX_OP) ||
+                        if ((object->reference.class == ACPI_REFCLASS_INDEX) ||
-                            (object->reference.opcode == AML_INT_NAMEPATH_OP)) {
+                            (object->reference.class == ACPI_REFCLASS_NAME)) {
                                next_object = object->reference.object;
                        }
                        break;
@@ -586,6 +585,13 @@ acpi_ut_update_object_reference(union acpi_operand_object *object, u16 action)
        ACPI_EXCEPTION((AE_INFO, status,
                        "Could not update object reference count"));
+        /* Free any stacked Update State objects */
+        while (state_list) {
+                state = acpi_ut_pop_generic_state(&state_list);
+                acpi_ut_delete_generic_state(state);
+        }
        return_ACPI_STATUS(status);
 }
diff --git a/drivers/acpi/utilities/utglobal.c b/drivers/acpi/utilities/utglobal.c
index a6e71b801d2d..670551b95e56 100644
--- a/drivers/acpi/utilities/utglobal.c
+++ b/drivers/acpi/utilities/utglobal.c
@@ -281,7 +281,6 @@ struct acpi_bit_register_info acpi_gbl_bit_register_info[ACPI_NUM_BITREG] = {
        /* ACPI_BITREG_RT_CLOCK_ENABLE      */ {ACPI_REGISTER_PM1_ENABLE,
                                                ACPI_BITPOSITION_RT_CLOCK_ENABLE,
                                                ACPI_BITMASK_RT_CLOCK_ENABLE},
-        /* ACPI_BITREG_WAKE_ENABLE          */ {ACPI_REGISTER_PM1_ENABLE, 0, 0},
        /* ACPI_BITREG_PCIEXP_WAKE_DISABLE  */ {ACPI_REGISTER_PM1_ENABLE,
                                                ACPI_BITPOSITION_PCIEXP_WAKE_DISABLE,
                                                ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
@@ -575,6 +574,47 @@ char *acpi_ut_get_descriptor_name(void *object)
 }
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_reference_name
+ *
+ * PARAMETERS:  Object               - An ACPI reference object
+ *
+ * RETURN:      Pointer to a string
+ *
+ * DESCRIPTION: Decode a reference object sub-type to a string.
+ *
+ ******************************************************************************/
+/* Printable names of reference object sub-types */
+static const char *acpi_gbl_ref_class_names[] = {
+        /* 00 */ "Local",
+        /* 01 */ "Argument",
+        /* 02 */ "RefOf",
+        /* 03 */ "Index",
+        /* 04 */ "DdbHandle",
+        /* 05 */ "Named Object",
+        /* 06 */ "Debug"
+};
+const char *acpi_ut_get_reference_name(union acpi_operand_object *object)
+{
+        if (!object)
+                return "NULL Object";
+        if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND)
+                return "Not an Operand object";
+        if (object->common.type != ACPI_TYPE_LOCAL_REFERENCE)
+                return "Not a Reference object";
+        if (object->reference.class > ACPI_REFCLASS_MAX)
+                return "Unknown Reference class";
+        return acpi_gbl_ref_class_names[object->reference.class];
+}
 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
 /*
 * Strings and procedures used for debug only
@@ -677,14 +717,14 @@ u8 acpi_ut_valid_object_type(acpi_object_type type)
 *
 * PARAMETERS:  None
 *
- * RETURN:      None
+ * RETURN:      Status
 *
 * DESCRIPTION: Init library globals.  All globals that require specific
 *              initialization should be initialized here!
 *
 ******************************************************************************/
-void acpi_ut_init_globals(void)
+acpi_status acpi_ut_init_globals(void)
 {
        acpi_status status;
        u32 i;
@@ -695,7 +735,7 @@ void acpi_ut_init_globals(void)
        status = acpi_ut_create_caches();
        if (ACPI_FAILURE(status)) {
-                return;
+                return_ACPI_STATUS(status);
        }
        /* Mutex locked flags */
@@ -772,8 +812,8 @@ void acpi_ut_init_globals(void)
        acpi_gbl_display_final_mem_stats = FALSE;
 #endif
-        return_VOID;
+        return_ACPI_STATUS(AE_OK);
 }
 ACPI_EXPORT_SYMBOL(acpi_dbg_level)
-    ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
+ACPI_EXPORT_SYMBOL(acpi_dbg_layer)
diff --git a/drivers/acpi/utilities/utmisc.c b/drivers/acpi/utilities/utmisc.c
index f34be6773556..9089a158a874 100644
--- a/drivers/acpi/utilities/utmisc.c
+++ b/drivers/acpi/utilities/utmisc.c
@@ -995,6 +995,15 @@ acpi_ut_walk_package_tree(union acpi_operand_object * source_object,
                                                         state->pkg.
                                                         this_target_obj, 0);
                        if (!state) {
+                                /* Free any stacked Update State objects */
+                                while (state_list) {
+                                        state =
+                                            acpi_ut_pop_generic_state
+                                            (&state_list);
+                                        acpi_ut_delete_generic_state(state);
+                                }
                                return_ACPI_STATUS(AE_NO_MEMORY);
                        }
                }
diff --git a/drivers/acpi/utilities/utobject.c b/drivers/acpi/utilities/utobject.c
index 916eff399eb3..c354e7a42bcd 100644
--- a/drivers/acpi/utilities/utobject.c
+++ b/drivers/acpi/utilities/utobject.c
@@ -43,7 +43,6 @@
 #include <acpi/acpi.h>
 #include <acpi/acnamesp.h>
-#include <acpi/amlcode.h>
 #define _COMPONENT          ACPI_UTILITIES
 ACPI_MODULE_NAME("utobject")
@@ -478,8 +477,8 @@ acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object,
        case ACPI_TYPE_LOCAL_REFERENCE:
-                switch (internal_object->reference.opcode) {
+                switch (internal_object->reference.class) {
-                case AML_INT_NAMEPATH_OP:
+                case ACPI_REFCLASS_NAME:
                        /*
                         * Get the actual length of the full pathname to this object.
@@ -503,8 +502,10 @@ acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object,
                         * required eventually.
                         */
                        ACPI_ERROR((AE_INFO,
-                                    "Unsupported Reference opcode=%X in object %p",
+                                    "Cannot convert to external object - "
-                                    internal_object->reference.opcode,
+                                    "unsupported Reference Class [%s] %X in object %p",
+                                    acpi_ut_get_reference_name(internal_object),
+                                    internal_object->reference.class,
                                    internal_object));
                        status = AE_TYPE;
                        break;
@@ -513,7 +514,9 @@ acpi_ut_get_simple_object_size(union acpi_operand_object *internal_object,
        default:
-                ACPI_ERROR((AE_INFO, "Unsupported type=%X in object %p",
+                ACPI_ERROR((AE_INFO, "Cannot convert to external object - "
+                            "unsupported type [%s] %X in object %p",
+                            acpi_ut_get_object_type_name(internal_object),
                            ACPI_GET_OBJECT_TYPE(internal_object),
                            internal_object));
                status = AE_TYPE;
diff --git a/drivers/acpi/utilities/utxface.c b/drivers/acpi/utilities/utxface.c
index f8bdadf3c32f..c198a4d40583 100644
--- a/drivers/acpi/utilities/utxface.c
+++ b/drivers/acpi/utilities/utxface.c
@@ -81,7 +81,12 @@ acpi_status __init acpi_initialize_subsystem(void)
        /* Initialize all globals used by the subsystem */
-        acpi_ut_init_globals();
+        status = acpi_ut_init_globals();
+        if (ACPI_FAILURE(status)) {
+                ACPI_EXCEPTION((AE_INFO, status,
+                                "During initialization of globals"));
+                return_ACPI_STATUS(status);
+        }
        /* Create the default mutex objects */
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index e8a51a1700f7..59fd299bb3d7 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1491,7 +1491,7 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
                strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME);
                strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);
-                acpi_driver_data(device) = data;
+                device->driver_data = data;
                data->device_id = device_id;
                data->video = video;
@@ -1530,8 +1530,8 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
                                                     acpi_video_device_notify,
                                                     data);
                if (ACPI_FAILURE(status)) {
-                        ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                        printk(KERN_ERR PREFIX
-                                          "Error installing notify handler\n"));
+                                          "Error installing notify handler\n");
                        if(data->brightness)
                                kfree(data->brightness->levels);
                        kfree(data->brightness);
@@ -1745,8 +1745,8 @@ acpi_video_bus_get_devices(struct acpi_video_bus *video,
                status = acpi_video_bus_get_one_device(dev, video);
                if (ACPI_FAILURE(status)) {
-                        ACPI_DEBUG_PRINT((ACPI_DB_WARN,
+                        printk(KERN_WARNING PREFIX
-                                        "Cant attach device"));
+                                        "Cant attach device");
                        continue;
                }
        }
@@ -1982,7 +1982,7 @@ static int acpi_video_bus_add(struct acpi_device *device)
        video->device = device;
        strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME);
        strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);
-        acpi_driver_data(device) = video;
+        device->driver_data = video;
        acpi_video_bus_find_cap(video);
        error = acpi_video_bus_check(video);
@@ -2003,8 +2003,8 @@ static int acpi_video_bus_add(struct acpi_device *device)
                                             ACPI_DEVICE_NOTIFY,
                                             acpi_video_bus_notify, video);
        if (ACPI_FAILURE(status)) {
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                printk(KERN_ERR PREFIX
-                                  "Error installing notify handler\n"));
+                                  "Error installing notify handler\n");
                error = -ENODEV;
                goto err_stop_video;
        }
@@ -2058,7 +2058,7 @@ static int acpi_video_bus_add(struct acpi_device *device)
        acpi_video_bus_remove_fs(device);
 err_free_video:
        kfree(video);
-        acpi_driver_data(device) = NULL;
+        device->driver_data = NULL;
        return error;
 }
diff --git a/drivers/acpi/wmi.c b/drivers/acpi/wmi.c
index cfe2c833474d..47cd7baf9b1b 100644
--- a/drivers/acpi/wmi.c
+++ b/drivers/acpi/wmi.c
@@ -217,6 +217,35 @@ static bool find_guid(const char *guid_string, struct wmi_block **out)
        return 0;
 }
+static acpi_status wmi_method_enable(struct wmi_block *wblock, int enable)
+{
+        struct guid_block *block = NULL;
+        char method[5];
+        struct acpi_object_list input;
+        union acpi_object params[1];
+        acpi_status status;
+        acpi_handle handle;
+        block = &wblock->gblock;
+        handle = wblock->handle;
+        if (!block)
+                return AE_NOT_EXIST;
+        input.count = 1;
+        input.pointer = params;
+        params[0].type = ACPI_TYPE_INTEGER;
+        params[0].integer.value = enable;
+        snprintf(method, 5, "WE%02X", block->notify_id);
+        status = acpi_evaluate_object(handle, method, &input, NULL);
+        if (status != AE_OK && status != AE_NOT_FOUND)
+                return status;
+        else
+                return AE_OK;
+}
 /*
 * Exported WMI functions
 */
@@ -242,7 +271,7 @@ u32 method_id, const struct acpi_buffer *in, struct acpi_buffer *out)
        char method[4] = "WM";
        if (!find_guid(guid_string, &wblock))
-                return AE_BAD_ADDRESS;
+                return AE_ERROR;
        block = &wblock->gblock;
        handle = wblock->handle;
@@ -304,7 +333,7 @@ struct acpi_buffer *out)
                return AE_BAD_PARAMETER;
        if (!find_guid(guid_string, &wblock))
-                return AE_BAD_ADDRESS;
+                return AE_ERROR;
        block = &wblock->gblock;
        handle = wblock->handle;
@@ -314,7 +343,7 @@ struct acpi_buffer *out)
        /* Check GUID is a data block */
        if (block->flags & (ACPI_WMI_EVENT | ACPI_WMI_METHOD))
-                return AE_BAD_ADDRESS;
+                return AE_ERROR;
        input.count = 1;
        input.pointer = wq_params;
@@ -385,7 +414,7 @@ const struct acpi_buffer *in)
                return AE_BAD_DATA;
        if (!find_guid(guid_string, &wblock))
-                return AE_BAD_ADDRESS;
+                return AE_ERROR;
        block = &wblock->gblock;
        handle = wblock->handle;
@@ -395,7 +424,7 @@ const struct acpi_buffer *in)
        /* Check GUID is a data block */
        if (block->flags & (ACPI_WMI_EVENT | ACPI_WMI_METHOD))
-                return AE_BAD_ADDRESS;
+                return AE_ERROR;
        input.count = 2;
        input.pointer = params;
@@ -427,6 +456,7 @@ acpi_status wmi_install_notify_handler(const char *guid,
 wmi_notify_handler handler, void *data)
 {
        struct wmi_block *block;
+        acpi_status status;
        if (!guid || !handler)
                return AE_BAD_PARAMETER;
@@ -441,7 +471,9 @@ wmi_notify_handler handler, void *data)
        block->handler = handler;
        block->handler_data = data;
-        return AE_OK;
+        status = wmi_method_enable(block, 1);
+        return status;
 }
 EXPORT_SYMBOL_GPL(wmi_install_notify_handler);
@@ -453,6 +485,7 @@ EXPORT_SYMBOL_GPL(wmi_install_notify_handler);
 acpi_status wmi_remove_notify_handler(const char *guid)
 {
        struct wmi_block *block;
+        acpi_status status;
        if (!guid)
                return AE_BAD_PARAMETER;
@@ -464,10 +497,12 @@ acpi_status wmi_remove_notify_handler(const char *guid)
        if (!block->handler)
                return AE_NULL_ENTRY;
+        status = wmi_method_enable(block, 0);
        block->handler = NULL;
        block->handler_data = NULL;
-        return AE_OK;
+        return status;
 }
 EXPORT_SYMBOL_GPL(wmi_remove_notify_handler);
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 9330b7922f62..c012307d0ba6 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -120,21 +120,6 @@ static void ata_acpi_associate_ide_port(struct ata_port *ap)
                ap->pflags |= ATA_PFLAG_INIT_GTM_VALID;
 }
-static void ata_acpi_eject_device(acpi_handle handle)
-{
-        struct acpi_object_list arg_list;
-        union acpi_object arg;
-        arg_list.count = 1;
-        arg_list.pointer = &arg;
-        arg.type = ACPI_TYPE_INTEGER;
-        arg.integer.value = 1;
-        if (ACPI_FAILURE(acpi_evaluate_object(handle, "_EJ0",
-                                              &arg_list, NULL)))
-                printk(KERN_ERR "Failed to evaluate _EJ0!\n");
-}
 /* @ap and @dev are the same as ata_acpi_handle_hotplug() */
 static void ata_acpi_detach_device(struct ata_port *ap, struct ata_device *dev)
 {
@@ -157,7 +142,6 @@ static void ata_acpi_detach_device(struct ata_port *ap, struct ata_device *dev)
 * @ap: ATA port ACPI event occurred
 * @dev: ATA device ACPI event occurred (can be NULL)
 * @event: ACPI event which occurred
- * @is_dock_event: boolean indicating whether the event was a dock one
 *
 * All ACPI bay / device realted events end up in this function.  If
 * the event is port-wide @dev is NULL.  If the event is specific to a
@@ -171,117 +155,100 @@ static void ata_acpi_detach_device(struct ata_port *ap, struct ata_device *dev)
 * ACPI notify handler context.  May sleep.
 */
 static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,
-                                    u32 event, int is_dock_event)
+                                    u32 event)
 {
-        char event_string[12];
-        char *envp[] = { event_string, NULL };
        struct ata_eh_info *ehi = &ap->link.eh_info;
-        struct kobject *kobj = NULL;
        int wait = 0;
        unsigned long flags;
-        acpi_handle handle, tmphandle;
+        acpi_handle handle;
-        unsigned long sta;
-        acpi_status status;
-        if (dev) {
+        if (dev)
-                if (dev->sdev)
-                        kobj = &dev->sdev->sdev_gendev.kobj;
                handle = dev->acpi_handle;
-        } else {
+        else
-                kobj = &ap->dev->kobj;
                handle = ap->acpi_handle;
-        }
-        status = acpi_get_handle(handle, "_EJ0", &tmphandle);
-        if (ACPI_FAILURE(status))
-                /* This device does not support hotplug */
-                return;
-        if (event == ACPI_NOTIFY_BUS_CHECK ||
-            event == ACPI_NOTIFY_DEVICE_CHECK)
-                status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
        spin_lock_irqsave(ap->lock, flags);
+        /*
+         * When dock driver calls into the routine, it will always use
+         * ACPI_NOTIFY_BUS_CHECK/ACPI_NOTIFY_DEVICE_CHECK for add and
+         * ACPI_NOTIFY_EJECT_REQUEST for remove
+         */
        switch (event) {
        case ACPI_NOTIFY_BUS_CHECK:
        case ACPI_NOTIFY_DEVICE_CHECK:
                ata_ehi_push_desc(ehi, "ACPI event");
-                if (ACPI_FAILURE(status)) {
+                ata_ehi_hotplugged(ehi);
-                        ata_port_printk(ap, KERN_ERR,
+                ata_port_freeze(ap);
-                                "acpi: failed to determine bay status (0x%x)\n",
-                                status);
-                        break;
-                }
-                if (sta) {
-                        ata_ehi_hotplugged(ehi);
-                        ata_port_freeze(ap);
-                } else {
-                        /* The device has gone - unplug it */
-                        ata_acpi_detach_device(ap, dev);
-                        wait = 1;
-                }
                break;
        case ACPI_NOTIFY_EJECT_REQUEST:
                ata_ehi_push_desc(ehi, "ACPI event");
-                if (!is_dock_event)
-                        break;
-                /* undock event - immediate unplug */
                ata_acpi_detach_device(ap, dev);
                wait = 1;
                break;
        }
-        /* make sure kobj doesn't go away while ap->lock is released */
-        kobject_get(kobj);
        spin_unlock_irqrestore(ap->lock, flags);
-        if (wait) {
+        if (wait)
                ata_port_wait_eh(ap);
-                ata_acpi_eject_device(handle);
-        }
-        if (kobj && !is_dock_event) {
-                sprintf(event_string, "BAY_EVENT=%d", event);
-                kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
-        }
-        kobject_put(kobj);
 }
 static void ata_acpi_dev_notify_dock(acpi_handle handle, u32 event, void *data)
 {
        struct ata_device *dev = data;
-        ata_acpi_handle_hotplug(dev->link->ap, dev, event, 1);
+        ata_acpi_handle_hotplug(dev->link->ap, dev, event);
 }
 static void ata_acpi_ap_notify_dock(acpi_handle handle, u32 event, void *data)
 {
        struct ata_port *ap = data;
-        ata_acpi_handle_hotplug(ap, NULL, event, 1);
+        ata_acpi_handle_hotplug(ap, NULL, event);
 }
-static void ata_acpi_dev_notify(acpi_handle handle, u32 event, void *data)
+static void ata_acpi_uevent(struct ata_port *ap, struct ata_device *dev,
+        u32 event)
 {
-        struct ata_device *dev = data;
+        struct kobject *kobj = NULL;
+        char event_string[20];
+        char *envp[] = { event_string, NULL };
+        if (dev) {
+                if (dev->sdev)
+                        kobj = &dev->sdev->sdev_gendev.kobj;
+        } else
+                kobj = &ap->dev->kobj;
-        ata_acpi_handle_hotplug(dev->link->ap, dev, event, 0);
+        if (kobj) {
+                snprintf(event_string, 20, "BAY_EVENT=%d", event);
+                kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
+        }
 }
-static void ata_acpi_ap_notify(acpi_handle handle, u32 event, void *data)
+static void ata_acpi_ap_uevent(acpi_handle handle, u32 event, void *data)
 {
-        struct ata_port *ap = data;
+        ata_acpi_uevent(data, NULL, event);
+}
-        ata_acpi_handle_hotplug(ap, NULL, event, 0);
+static void ata_acpi_dev_uevent(acpi_handle handle, u32 event, void *data)
+{
+        struct ata_device *dev = data;
+        ata_acpi_uevent(dev->link->ap, dev, event);
 }
+static struct acpi_dock_ops ata_acpi_dev_dock_ops = {
+        .handler = ata_acpi_dev_notify_dock,
+        .uevent = ata_acpi_dev_uevent,
+};
+static struct acpi_dock_ops ata_acpi_ap_dock_ops = {
+        .handler = ata_acpi_ap_notify_dock,
+        .uevent = ata_acpi_ap_uevent,
+};
 /**
 * ata_acpi_associate - associate ATA host with ACPI objects
 * @host: target ATA host
@@ -315,24 +282,18 @@ void ata_acpi_associate(struct ata_host *host)
                        ata_acpi_associate_ide_port(ap);
                if (ap->acpi_handle) {
-                        acpi_install_notify_handler(ap->acpi_handle,
-                                                    ACPI_SYSTEM_NOTIFY,
-                                                    ata_acpi_ap_notify, ap);
                        /* we might be on a docking station */
                        register_hotplug_dock_device(ap->acpi_handle,
-                                             ata_acpi_ap_notify_dock, ap);
+                                             &ata_acpi_ap_dock_ops, ap);
                }
                for (j = 0; j < ata_link_max_devices(&ap->link); j++) {
                        struct ata_device *dev = &ap->link.device[j];
                        if (dev->acpi_handle) {
-                                acpi_install_notify_handler(dev->acpi_handle,
-                                                ACPI_SYSTEM_NOTIFY,
-                                                ata_acpi_dev_notify, dev);
                                /* we might be on a docking station */
                                register_hotplug_dock_device(dev->acpi_handle,
-                                             ata_acpi_dev_notify_dock, dev);
+                                             &ata_acpi_dev_dock_ops, dev);
                        }
                }
        }
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 5ce07b517c58..bb6e3b338043 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -56,7 +56,11 @@ static void cpuidle_idle_call(void)
                if (pm_idle_old)
                        pm_idle_old();
                else
+#if defined(CONFIG_ARCH_HAS_DEFAULT_IDLE)
+                        default_idle();
+#else
                        local_irq_enable();
+#endif
                return;
        }
@@ -67,8 +71,11 @@ static void cpuidle_idle_call(void)
        target_state = &dev->states[next_state];
        /* enter the state and update stats */
-        dev->last_residency = target_state->enter(dev, target_state);
        dev->last_state = target_state;
+        dev->last_residency = target_state->enter(dev, target_state);
+        if (dev->last_state)
+                target_state = dev->last_state;
        target_state->time += (unsigned long long)dev->last_residency;
        target_state->usage++;
diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c
index bc8c6e3470ca..f8396cafa05f 100644
--- a/drivers/dma/ioat_dma.c
+++ b/drivers/dma/ioat_dma.c
@@ -171,6 +171,9 @@ static int ioat_dma_enumerate_channels(struct ioatdma_device *device)
        xfercap_scale = readb(device->reg_base + IOAT_XFERCAP_OFFSET);
        xfercap = (xfercap_scale == 0 ? -1 : (1UL << xfercap_scale));
+#if CONFIG_I7300_IDLE_IOAT_CHANNEL
+        device->common.chancnt--;
+#endif
        for (i = 0; i < device->common.chancnt; i++) {
                ioat_chan = kzalloc(sizeof(*ioat_chan), GFP_KERNEL);
                if (!ioat_chan) {
diff --git a/drivers/idle/Kconfig b/drivers/idle/Kconfig
new file mode 100644
index 000000000000..f5b26dd579e4
--- /dev/null
+++ b/drivers/idle/Kconfig
@@ -0,0 +1,16 @@
+menu "Memory power savings"
+config I7300_IDLE_IOAT_CHANNEL
+        bool
+config I7300_IDLE
+        tristate "Intel chipset idle power saving driver"
+        select I7300_IDLE_IOAT_CHANNEL
+        depends on X86_64
+        help
+          Enable idle power savings with certain Intel server chipsets.
+          The chipset must have I/O AT support, such as the Intel 7300.
+          The power savings depends on the type and quantity of DRAM devices.
+endmenu
diff --git a/drivers/idle/Makefile b/drivers/idle/Makefile
new file mode 100644
index 000000000000..5f68fc377e21
--- /dev/null
+++ b/drivers/idle/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_I7300_IDLE)                        += i7300_idle.o
diff --git a/drivers/idle/i7300_idle.c b/drivers/idle/i7300_idle.c
new file mode 100644
index 000000000000..59d1bbc3cd3c
--- /dev/null
+++ b/drivers/idle/i7300_idle.c
@@ -0,0 +1,674 @@
+/*
+ * (C) Copyright 2008 Intel Corporation
+ * Authors:
+ * Andy Henroid <andrew.d.henroid@intel.com>
+ * Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
+ */
+/*
+ * Save DIMM power on Intel 7300-based platforms when all CPUs/cores
+ * are idle, using the DIMM thermal throttling capability.
+ *
+ * This driver depends on the Intel integrated DMA controller (I/O AT).
+ * If the driver for I/O AT (drivers/dma/ioatdma*) is also enabled,
+ * this driver should work cooperatively.
+ */
+/* #define DEBUG */
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/sched.h>
+#include <linux/notifier.h>
+#include <linux/cpumask.h>
+#include <linux/ktime.h>
+#include <linux/delay.h>
+#include <linux/debugfs.h>
+#include <linux/stop_machine.h>
+#include <asm/idle.h>
+#include "../dma/ioatdma_hw.h"
+#include "../dma/ioatdma_registers.h"
+#define I7300_IDLE_DRIVER_VERSION       "1.55"
+#define I7300_PRINT                     "i7300_idle:"
+static int debug;
+module_param_named(debug, debug, uint, 0644);
+MODULE_PARM_DESC(debug, "Enable debug printks in this driver");
+#define dprintk(fmt, arg...) \
+        do { if (debug) printk(KERN_INFO I7300_PRINT fmt, ##arg); } while (0)
+/*
+ * Value to set THRTLOW to when initiating throttling
+ *  0 = No throttling
+ *  1 = Throttle when > 4 activations per eval window (Maximum throttling)
+ *  2 = Throttle when > 8 activations
+ *  168 = Throttle when > 168 activations (Minimum throttling)
+ */
+#define MAX_THRTLWLIMIT         168
+static uint i7300_idle_thrtlowlm = 1;
+module_param_named(thrtlwlimit, i7300_idle_thrtlowlm, uint, 0644);
+MODULE_PARM_DESC(thrtlwlimit,
+                "Value for THRTLOWLM activation field "
+                "(0 = disable throttle, 1 = Max throttle, 168 = Min throttle)");
+/*
+ * simple invocation and duration statistics
+ */
+static unsigned long total_starts;
+static unsigned long total_us;
+#ifdef DEBUG
+static unsigned long past_skip;
+#endif
+static struct pci_dev *fbd_dev;
+static spinlock_t i7300_idle_lock;
+static int i7300_idle_active;
+static u8 i7300_idle_thrtctl_saved;
+static u8 i7300_idle_thrtlow_saved;
+static u32 i7300_idle_mc_saved;
+static cpumask_t idle_cpumask;
+static ktime_t start_ktime;
+static unsigned long avg_idle_us;
+static struct dentry *debugfs_dir;
+/* Begin: I/O AT Helper routines */
+#define IOAT_CHANBASE(ioat_ctl, chan) (ioat_ctl + 0x80 + 0x80 * chan)
+/* Snoop control (disable snoops when coherency is not important) */
+#define IOAT_DESC_SADDR_SNP_CTL (1UL << 1)
+#define IOAT_DESC_DADDR_SNP_CTL (1UL << 2)
+static struct pci_dev *ioat_dev;
+static struct ioat_dma_descriptor *ioat_desc; /* I/O AT desc & data (1 page) */
+static unsigned long ioat_desc_phys;
+static u8 *ioat_iomap; /* I/O AT memory-mapped control regs (aka CB_BAR) */
+static u8 *ioat_chanbase;
+/* Start I/O AT memory copy */
+static int i7300_idle_ioat_start(void)
+{
+        u32 err;
+        /* Clear error (due to circular descriptor pointer) */
+        err = readl(ioat_chanbase + IOAT_CHANERR_OFFSET);
+        if (err)
+                writel(err, ioat_chanbase + IOAT_CHANERR_OFFSET);
+        writeb(IOAT_CHANCMD_START, ioat_chanbase + IOAT1_CHANCMD_OFFSET);
+        return 0;
+}
+/* Stop I/O AT memory copy */
+static void i7300_idle_ioat_stop(void)
+{
+        int i;
+        u8 sts;
+        for (i = 0; i < 5; i++) {
+                writeb(IOAT_CHANCMD_RESET,
+                        ioat_chanbase + IOAT1_CHANCMD_OFFSET);
+                udelay(10);
+                sts = readq(ioat_chanbase + IOAT1_CHANSTS_OFFSET) &
+                        IOAT_CHANSTS_DMA_TRANSFER_STATUS;
+                if (sts != IOAT_CHANSTS_DMA_TRANSFER_STATUS_ACTIVE)
+                        break;
+        }
+        if (i == 5)
+                dprintk("failed to suspend+reset I/O AT after 5 retries\n");
+}
+/* Test I/O AT by copying 1024 byte from 2k to 1k */
+static int __init i7300_idle_ioat_selftest(u8 *ctl,
+                struct ioat_dma_descriptor *desc, unsigned long desc_phys)
+{
+        u64 chan_sts;
+        memset(desc, 0, 2048);
+        memset((u8 *) desc + 2048, 0xab, 1024);
+        desc[0].size = 1024;
+        desc[0].ctl = 0;
+        desc[0].src_addr = desc_phys + 2048;
+        desc[0].dst_addr = desc_phys + 1024;
+        desc[0].next = 0;
+        writeb(IOAT_CHANCMD_RESET, ioat_chanbase + IOAT1_CHANCMD_OFFSET);
+        writeb(IOAT_CHANCMD_START, ioat_chanbase + IOAT1_CHANCMD_OFFSET);
+        udelay(1000);
+        chan_sts = readq(ioat_chanbase + IOAT1_CHANSTS_OFFSET) &
+                        IOAT_CHANSTS_DMA_TRANSFER_STATUS;
+        if (chan_sts != IOAT_CHANSTS_DMA_TRANSFER_STATUS_DONE) {
+                /* Not complete, reset the channel */
+                writeb(IOAT_CHANCMD_RESET,
+                       ioat_chanbase + IOAT1_CHANCMD_OFFSET);
+                return -1;
+        }
+        if (*(u32 *) ((u8 *) desc + 3068) != 0xabababab ||
+            *(u32 *) ((u8 *) desc + 2044) != 0xabababab) {
+                dprintk("Data values src 0x%x, dest 0x%x, memset 0x%x\n",
+                        *(u32 *) ((u8 *) desc + 2048),
+                        *(u32 *) ((u8 *) desc + 1024),
+                        *(u32 *) ((u8 *) desc + 3072));
+                return -1;
+        }
+        return 0;
+}
+static struct device dummy_dma_dev = {
+        .bus_id = "fallback device",
+        .coherent_dma_mask = DMA_64BIT_MASK,
+        .dma_mask = &dummy_dma_dev.coherent_dma_mask,
+};
+/* Setup and initialize I/O AT */
+/* This driver needs I/O AT as the throttling takes effect only when there is
+ * some memory activity. We use I/O AT to set up a dummy copy, while all CPUs
+ * go idle and memory is throttled.
+ */
+static int __init i7300_idle_ioat_init(void)
+{
+        u8 ver, chan_count, ioat_chan;
+        u16 chan_ctl;
+        ioat_iomap = (u8 *) ioremap_nocache(pci_resource_start(ioat_dev, 0),
+                                            pci_resource_len(ioat_dev, 0));
+        if (!ioat_iomap) {
+                printk(KERN_ERR I7300_PRINT "failed to map I/O AT registers\n");
+                goto err_ret;
+        }
+        ver = readb(ioat_iomap + IOAT_VER_OFFSET);
+        if (ver != IOAT_VER_1_2) {
+                printk(KERN_ERR I7300_PRINT "unknown I/O AT version (%u.%u)\n",
+                        ver >> 4, ver & 0xf);
+                goto err_unmap;
+        }
+        chan_count = readb(ioat_iomap + IOAT_CHANCNT_OFFSET);
+        if (!chan_count) {
+                printk(KERN_ERR I7300_PRINT "unexpected # of I/O AT channels "
+                        "(%u)\n",
+                        chan_count);
+                goto err_unmap;
+        }
+        ioat_chan = chan_count - 1;
+        ioat_chanbase = IOAT_CHANBASE(ioat_iomap, ioat_chan);
+        chan_ctl = readw(ioat_chanbase + IOAT_CHANCTRL_OFFSET);
+        if (chan_ctl & IOAT_CHANCTRL_CHANNEL_IN_USE) {
+                printk(KERN_ERR I7300_PRINT "channel %d in use\n", ioat_chan);
+                goto err_unmap;
+        }
+        writew(IOAT_CHANCTRL_CHANNEL_IN_USE,
+                ioat_chanbase + IOAT_CHANCTRL_OFFSET);
+        ioat_desc = (struct ioat_dma_descriptor *)dma_alloc_coherent(
+                        &dummy_dma_dev, 4096,
+                        (dma_addr_t *)&ioat_desc_phys, GFP_KERNEL);
+        if (!ioat_desc) {
+                printk(KERN_ERR I7300_PRINT "failed to allocate I/O AT desc\n");
+                goto err_mark_unused;
+        }
+        writel(ioat_desc_phys & 0xffffffffUL,
+               ioat_chanbase + IOAT1_CHAINADDR_OFFSET_LOW);
+        writel(ioat_desc_phys >> 32,
+               ioat_chanbase + IOAT1_CHAINADDR_OFFSET_HIGH);
+        if (i7300_idle_ioat_selftest(ioat_iomap, ioat_desc, ioat_desc_phys)) {
+                printk(KERN_ERR I7300_PRINT "I/O AT self-test failed\n");
+                goto err_free;
+        }
+        /* Setup circular I/O AT descriptor chain */
+        ioat_desc[0].ctl = IOAT_DESC_SADDR_SNP_CTL | IOAT_DESC_DADDR_SNP_CTL;
+        ioat_desc[0].src_addr = ioat_desc_phys + 2048;
+        ioat_desc[0].dst_addr = ioat_desc_phys + 3072;
+        ioat_desc[0].size = 128;
+        ioat_desc[0].next = ioat_desc_phys + sizeof(struct ioat_dma_descriptor);
+        ioat_desc[1].ctl = ioat_desc[0].ctl;
+        ioat_desc[1].src_addr = ioat_desc[0].src_addr;
+        ioat_desc[1].dst_addr = ioat_desc[0].dst_addr;
+        ioat_desc[1].size = ioat_desc[0].size;
+        ioat_desc[1].next = ioat_desc_phys;
+        return 0;
+err_free:
+        dma_free_coherent(&dummy_dma_dev, 4096, (void *)ioat_desc, 0);
+err_mark_unused:
+        writew(0, ioat_chanbase + IOAT_CHANCTRL_OFFSET);
+err_unmap:
+        iounmap(ioat_iomap);
+err_ret:
+        return -ENODEV;
+}
+/* Cleanup I/O AT */
+static void __exit i7300_idle_ioat_exit(void)
+{
+        int i;
+        u64 chan_sts;
+        i7300_idle_ioat_stop();
+        /* Wait for a while for the channel to halt before releasing */
+        for (i = 0; i < 10; i++) {
+                writeb(IOAT_CHANCMD_RESET,
+                       ioat_chanbase + IOAT1_CHANCMD_OFFSET);
+                chan_sts = readq(ioat_chanbase + IOAT1_CHANSTS_OFFSET) &
+                        IOAT_CHANSTS_DMA_TRANSFER_STATUS;
+                if (chan_sts != IOAT_CHANSTS_DMA_TRANSFER_STATUS_ACTIVE) {
+                        writew(0, ioat_chanbase + IOAT_CHANCTRL_OFFSET);
+                        break;
+                }
+                udelay(1000);
+        }
+        chan_sts = readq(ioat_chanbase + IOAT1_CHANSTS_OFFSET) &
+                        IOAT_CHANSTS_DMA_TRANSFER_STATUS;
+        /*
+         * We tried to reset multiple times. If IO A/T channel is still active
+         * flag an error and return without cleanup. Memory leak is better
+         * than random corruption in that extreme error situation.
+         */
+        if (chan_sts == IOAT_CHANSTS_DMA_TRANSFER_STATUS_ACTIVE) {
+                printk(KERN_ERR I7300_PRINT "Unable to stop IO A/T channels."
+                        " Not freeing resources\n");
+                return;
+        }
+        dma_free_coherent(&dummy_dma_dev, 4096, (void *)ioat_desc, 0);
+        iounmap(ioat_iomap);
+}
+/* End: I/O AT Helper routines */
+#define DIMM_THRTLOW 0x64
+#define DIMM_THRTCTL 0x67
+#define DIMM_THRTCTL_THRMHUNT (1UL << 0)
+#define DIMM_MC 0x40
+#define DIMM_GTW_MODE (1UL << 17)
+#define DIMM_GBLACT 0x60
+/*
+ * Keep track of an exponential-decaying average of recent idle durations.
+ * The latest duration gets DURATION_WEIGHT_PCT percentage weight
+ * in this average, with the old average getting the remaining weight.
+ *
+ * High weights emphasize recent history, low weights include long history.
+ */
+#define DURATION_WEIGHT_PCT 55
+/*
+ * When the decaying average of recent durations or the predicted duration
+ * of the next timer interrupt is shorter than duration_threshold, the
+ * driver will decline to throttle.
+ */
+#define DURATION_THRESHOLD_US 100
+/* Store DIMM thermal throttle configuration */
+static int i7300_idle_thrt_save(void)
+{
+        u32 new_mc_val;
+        u8 gblactlm;
+        pci_read_config_byte(fbd_dev, DIMM_THRTCTL, &i7300_idle_thrtctl_saved);
+        pci_read_config_byte(fbd_dev, DIMM_THRTLOW, &i7300_idle_thrtlow_saved);
+        pci_read_config_dword(fbd_dev, DIMM_MC, &i7300_idle_mc_saved);
+        /*
+         * Make sure we have Global Throttling Window Mode set to have a
+         * "short" window. This (mostly) works around an issue where
+         * throttling persists until the end of the global throttling window
+         * size. On the tested system, this was resulting in a maximum of
+         * 64 ms to exit throttling (average 32 ms). The actual numbers
+         * depends on system frequencies. Setting the short window reduces
+         * this by a factor of 4096.
+         *
+         * We will only do this only if the system is set for
+         * unlimited-activations while in open-loop throttling (i.e., when
+         * Global Activation Throttle Limit is zero).
+         */
+        pci_read_config_byte(fbd_dev, DIMM_GBLACT, &gblactlm);
+        dprintk("thrtctl_saved = 0x%02x, thrtlow_saved = 0x%02x\n",
+                i7300_idle_thrtctl_saved,
+                i7300_idle_thrtlow_saved);
+        dprintk("mc_saved = 0x%08x, gblactlm = 0x%02x\n",
+                i7300_idle_mc_saved,
+                gblactlm);
+        if (gblactlm == 0) {
+                new_mc_val = i7300_idle_mc_saved | DIMM_GTW_MODE;
+                pci_write_config_dword(fbd_dev, DIMM_MC, new_mc_val);
+                return 0;
+        } else {
+                dprintk("could not set GTW_MODE = 1 (OLTT enabled)\n");
+                return -ENODEV;
+        }
+}
+/* Restore DIMM thermal throttle configuration */
+static void i7300_idle_thrt_restore(void)
+{
+        pci_write_config_dword(fbd_dev, DIMM_MC, i7300_idle_mc_saved);
+        pci_write_config_byte(fbd_dev, DIMM_THRTLOW, i7300_idle_thrtlow_saved);
+        pci_write_config_byte(fbd_dev, DIMM_THRTCTL, i7300_idle_thrtctl_saved);
+}
+/* Enable DIMM thermal throttling */
+static void i7300_idle_start(void)
+{
+        u8 new_ctl;
+        u8 limit;
+        new_ctl = i7300_idle_thrtctl_saved & ~DIMM_THRTCTL_THRMHUNT;
+        pci_write_config_byte(fbd_dev, DIMM_THRTCTL, new_ctl);
+        limit = i7300_idle_thrtlowlm;
+        if (unlikely(limit > MAX_THRTLWLIMIT))
+                limit = MAX_THRTLWLIMIT;
+        pci_write_config_byte(fbd_dev, DIMM_THRTLOW, limit);
+        new_ctl = i7300_idle_thrtctl_saved | DIMM_THRTCTL_THRMHUNT;
+        pci_write_config_byte(fbd_dev, DIMM_THRTCTL, new_ctl);
+}
+/* Disable DIMM thermal throttling */
+static void i7300_idle_stop(void)
+{
+        u8 new_ctl;
+        u8 got_ctl;
+        new_ctl = i7300_idle_thrtctl_saved & ~DIMM_THRTCTL_THRMHUNT;
+        pci_write_config_byte(fbd_dev, DIMM_THRTCTL, new_ctl);
+        pci_write_config_byte(fbd_dev, DIMM_THRTLOW, i7300_idle_thrtlow_saved);
+        pci_write_config_byte(fbd_dev, DIMM_THRTCTL, i7300_idle_thrtctl_saved);
+        pci_read_config_byte(fbd_dev, DIMM_THRTCTL, &got_ctl);
+        WARN_ON_ONCE(got_ctl != i7300_idle_thrtctl_saved);
+}
+/*
+ * i7300_avg_duration_check()
+ * return 0 if the decaying average of recent idle durations is
+ * more than DURATION_THRESHOLD_US
+ */
+static int i7300_avg_duration_check(void)
+{
+        if (avg_idle_us >= DURATION_THRESHOLD_US)
+                return 0;
+#ifdef DEBUG
+        past_skip++;
+#endif
+        return 1;
+}
+/* Idle notifier to look at idle CPUs */
+static int i7300_idle_notifier(struct notifier_block *nb, unsigned long val,
+                                void *data)
+{
+        unsigned long flags;
+        ktime_t now_ktime;
+        static ktime_t idle_begin_time;
+        static int time_init = 1;
+        if (!i7300_idle_thrtlowlm)
+                return 0;
+        if (unlikely(time_init)) {
+                time_init = 0;
+                idle_begin_time = ktime_get();
+        }
+        spin_lock_irqsave(&i7300_idle_lock, flags);
+        if (val == IDLE_START) {
+                cpu_set(smp_processor_id(), idle_cpumask);
+                if (cpus_weight(idle_cpumask) != num_online_cpus())
+                        goto end;
+                now_ktime = ktime_get();
+                idle_begin_time = now_ktime;
+                if (i7300_avg_duration_check())
+                        goto end;
+                i7300_idle_active = 1;
+                total_starts++;
+                start_ktime = now_ktime;
+                i7300_idle_start();
+                i7300_idle_ioat_start();
+        } else if (val == IDLE_END) {
+                cpu_clear(smp_processor_id(), idle_cpumask);
+                if (cpus_weight(idle_cpumask) == (num_online_cpus() - 1)) {
+                        /* First CPU coming out of idle */
+                        u64 idle_duration_us;
+                        now_ktime = ktime_get();
+                        idle_duration_us = ktime_to_us(ktime_sub
+                                                (now_ktime, idle_begin_time));
+                        avg_idle_us =
+                                ((100 - DURATION_WEIGHT_PCT) * avg_idle_us +
+                                 DURATION_WEIGHT_PCT * idle_duration_us) / 100;
+                        if (i7300_idle_active) {
+                                ktime_t idle_ktime;
+                                idle_ktime = ktime_sub(now_ktime, start_ktime);
+                                total_us += ktime_to_us(idle_ktime);
+                                i7300_idle_ioat_stop();
+                                i7300_idle_stop();
+                                i7300_idle_active = 0;
+                        }
+                }
+        }
+end:
+        spin_unlock_irqrestore(&i7300_idle_lock, flags);
+        return 0;
+}
+static struct notifier_block i7300_idle_nb = {
+        .notifier_call = i7300_idle_notifier,
+};
+/*
+ * I/O AT controls (PCI bus 0 device 8 function 0)
+ * DIMM controls (PCI bus 0 device 16 function 1)
+ */
+#define IOAT_BUS 0
+#define IOAT_DEVFN PCI_DEVFN(8, 0)
+#define MEMCTL_BUS 0
+#define MEMCTL_DEVFN PCI_DEVFN(16, 1)
+struct fbd_ioat {
+        unsigned int vendor;
+        unsigned int ioat_dev;
+};
+/*
+ * The i5000 chip-set has the same hooks as the i7300
+ * but support is disabled by default because this driver
+ * has not been validated on that platform.
+ */
+#define SUPPORT_I5000 0
+static const struct fbd_ioat fbd_ioat_list[] = {
+        {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_CNB},
+#if SUPPORT_I5000
+        {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT},
+#endif
+        {0, 0}
+};
+/* table of devices that work with this driver */
+static const struct pci_device_id pci_tbl[] = {
+        { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_FBD_CNB) },
+#if SUPPORT_I5000
+        { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) },
+#endif
+        { } /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(pci, pci_tbl);
+/* Check for known platforms with I/O-AT */
+static int __init i7300_idle_platform_probe(void)
+{
+        int i;
+        fbd_dev = pci_get_bus_and_slot(MEMCTL_BUS, MEMCTL_DEVFN);
+        if (!fbd_dev)
+                return -ENODEV;
+        for (i = 0; pci_tbl[i].vendor != 0; i++) {
+                if (fbd_dev->vendor == pci_tbl[i].vendor &&
+                    fbd_dev->device == pci_tbl[i].device) {
+                        break;
+                }
+        }
+        if (pci_tbl[i].vendor == 0)
+                return -ENODEV;
+        ioat_dev = pci_get_bus_and_slot(IOAT_BUS, IOAT_DEVFN);
+        if (!ioat_dev)
+                return -ENODEV;
+        for (i = 0; fbd_ioat_list[i].vendor != 0; i++) {
+                if (ioat_dev->vendor == fbd_ioat_list[i].vendor &&
+                    ioat_dev->device == fbd_ioat_list[i].ioat_dev) {
+                        return 0;
+                }
+        }
+        return -ENODEV;
+}
+int stats_open_generic(struct inode *inode, struct file *fp)
+{
+        fp->private_data = inode->i_private;
+        return 0;
+}
+static ssize_t stats_read_ul(struct file *fp, char __user *ubuf, size_t count,
+                                loff_t *off)
+{
+        unsigned long *p = fp->private_data;
+        char buf[32];
+        int len;
+        len = snprintf(buf, 32, "%lu\n", *p);
+        return simple_read_from_buffer(ubuf, count, off, buf, len);
+}
+static const struct file_operations idle_fops = {
+        .open   = stats_open_generic,
+        .read   = stats_read_ul,
+};
+struct debugfs_file_info {
+        void *ptr;
+        char name[32];
+        struct dentry *file;
+} debugfs_file_list[] = {
+                                {&total_starts, "total_starts", NULL},
+                                {&total_us, "total_us", NULL},
+#ifdef DEBUG
+                                {&past_skip, "past_skip", NULL},
+#endif
+                                {NULL, "", NULL}
+                        };
+static int __init i7300_idle_init(void)
+{
+        spin_lock_init(&i7300_idle_lock);
+        cpus_clear(idle_cpumask);
+        total_us = 0;
+        if (i7300_idle_platform_probe())
+                return -ENODEV;
+        if (i7300_idle_thrt_save())
+                return -ENODEV;
+        if (i7300_idle_ioat_init())
+                return -ENODEV;
+        debugfs_dir = debugfs_create_dir("i7300_idle", NULL);
+        if (debugfs_dir) {
+                int i = 0;
+                while (debugfs_file_list[i].ptr != NULL) {
+                        debugfs_file_list[i].file = debugfs_create_file(
+                                        debugfs_file_list[i].name,
+                                        S_IRUSR,
+                                        debugfs_dir,
+                                        debugfs_file_list[i].ptr,
+                                        &idle_fops);
+                        i++;
+                }
+        }
+        idle_notifier_register(&i7300_idle_nb);
+        printk(KERN_INFO "i7300_idle: loaded v%s\n", I7300_IDLE_DRIVER_VERSION);
+        return 0;
+}
+static void __exit i7300_idle_exit(void)
+{
+        idle_notifier_unregister(&i7300_idle_nb);
+        if (debugfs_dir) {
+                int i = 0;
+                while (debugfs_file_list[i].file != NULL) {
+                        debugfs_remove(debugfs_file_list[i].file);
+                        i++;
+                }
+                debugfs_remove(debugfs_dir);
+        }
+        i7300_idle_thrt_restore();
+        i7300_idle_ioat_exit();
+}
+module_init(i7300_idle_init);
+module_exit(i7300_idle_exit);
+MODULE_AUTHOR("Andy Henroid <andrew.d.henroid@intel.com>");
+MODULE_DESCRIPTION("Intel Chipset DIMM Idle Power Saving Driver v"
+                        I7300_IDLE_DRIVER_VERSION);
+MODULE_LICENSE("GPL");
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index a726f3b01a6b..6abb95919c38 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -145,6 +145,7 @@ config ACER_WMI
        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
diff --git a/drivers/misc/acer-wmi.c b/drivers/misc/acer-wmi.c
index d8b0d326e452..0532a2de2ce4 100644
--- a/drivers/misc/acer-wmi.c
+++ b/drivers/misc/acer-wmi.c
@@ -33,6 +33,8 @@
 #include <linux/platform_device.h>
 #include <linux/acpi.h>
 #include <linux/i8042.h>
+#include <linux/rfkill.h>
+#include <linux/workqueue.h>
 #include <linux/debugfs.h>
 #include <acpi/acpi_drivers.h>
@@ -123,21 +125,15 @@ enum interface_flags {
 static int max_brightness = 0xF;
-static int wireless = -1;
-static int bluetooth = -1;
 static int mailled = -1;
 static int brightness = -1;
 static int threeg = -1;
 static int force_series;
 module_param(mailled, int, 0444);
-module_param(wireless, int, 0444);
-module_param(bluetooth, int, 0444);
 module_param(brightness, int, 0444);
 module_param(threeg, int, 0444);
 module_param(force_series, int, 0444);
-MODULE_PARM_DESC(wireless, "Set initial state of Wireless hardware");
-MODULE_PARM_DESC(bluetooth, "Set initial state of Bluetooth hardware");
 MODULE_PARM_DESC(mailled, "Set initial state of Mail LED");
 MODULE_PARM_DESC(brightness, "Set initial LCD backlight brightness");
 MODULE_PARM_DESC(threeg, "Set initial state of 3G hardware");
@@ -145,8 +141,6 @@ MODULE_PARM_DESC(force_series, "Force a different laptop series");
 struct acer_data {
        int mailled;
-        int wireless;
-        int bluetooth;
        int threeg;
        int brightness;
 };
@@ -157,6 +151,9 @@ struct acer_debug {
        u32 wmid_devices;
 };
+static struct rfkill *wireless_rfkill;
+static struct rfkill *bluetooth_rfkill;
 /* Each low-level interface must define at least some of the following */
 struct wmi_interface {
        /* The WMI device type */
@@ -476,7 +473,7 @@ struct wmi_interface *iface)
                }
                break;
        default:
-                return AE_BAD_ADDRESS;
+                return AE_ERROR;
        }
        return AE_OK;
 }
@@ -514,7 +511,7 @@ static acpi_status AMW0_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
                        break;
                }
        default:
-                return AE_BAD_ADDRESS;
+                return AE_ERROR;
        }
        /* Actually do the set */
@@ -689,7 +686,7 @@ struct wmi_interface *iface)
                        return 0;
                }
        default:
-                return AE_BAD_ADDRESS;
+                return AE_ERROR;
        }
        status = WMI_execute_u32(method_id, 0, &result);
@@ -735,7 +732,7 @@ static acpi_status WMID_set_u32(u32 value, u32 cap, struct wmi_interface *iface)
                }
                break;
        default:
-                return AE_BAD_ADDRESS;
+                return AE_ERROR;
        }
        return WMI_execute_u32(method_id, (u32)value, NULL);
 }
@@ -785,7 +782,7 @@ static struct wmi_interface wmid_interface = {
 static acpi_status get_u32(u32 *value, u32 cap)
 {
-        acpi_status status = AE_BAD_ADDRESS;
+        acpi_status status = AE_ERROR;
        switch (interface->type) {
        case ACER_AMW0:
@@ -846,8 +843,6 @@ static void __init acer_commandline_init(void)
         * capability isn't available on the given interface
         */
        set_u32(mailled, ACER_CAP_MAILLED);
-        set_u32(wireless, ACER_CAP_WIRELESS);
-        set_u32(bluetooth, ACER_CAP_BLUETOOTH);
        set_u32(threeg, ACER_CAP_THREEG);
        set_u32(brightness, ACER_CAP_BRIGHTNESS);
 }
@@ -933,40 +928,135 @@ static void acer_backlight_exit(void)
 }
 /*
- * Read/ write bool sysfs macro
+ * Rfkill devices
 */
-#define show_set_bool(value, cap) \
+static void acer_rfkill_update(struct work_struct *ignored);
-static ssize_t \
+static DECLARE_DELAYED_WORK(acer_rfkill_work, acer_rfkill_update);
-show_bool_##value(struct device *dev, struct device_attribute *attr, \
+static void acer_rfkill_update(struct work_struct *ignored)
-        char *buf) \
+{
-{ \
+        u32 state;
-        u32 result; \
+        acpi_status status;
-        acpi_status status = get_u32(&result, cap); \
-        if (ACPI_SUCCESS(status)) \
+        status = get_u32(&state, ACER_CAP_WIRELESS);
-                return sprintf(buf, "%u\n", result); \
+        if (ACPI_SUCCESS(status))
-        return sprintf(buf, "Read error\n"); \
+                rfkill_force_state(wireless_rfkill, state ?
-} \
+                        RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED);
-\
-static ssize_t \
+        if (has_cap(ACER_CAP_BLUETOOTH)) {
-set_bool_##value(struct device *dev, struct device_attribute *attr, \
+                status = get_u32(&state, ACER_CAP_BLUETOOTH);
-        const char *buf, size_t count) \
+                if (ACPI_SUCCESS(status))
-{ \
+                        rfkill_force_state(bluetooth_rfkill, state ?
-        u32 tmp = simple_strtoul(buf, NULL, 10); \
+                                RFKILL_STATE_UNBLOCKED :
-        acpi_status status = set_u32(tmp, cap); \
+                                RFKILL_STATE_SOFT_BLOCKED);
-                if (ACPI_FAILURE(status)) \
+        }
-                        return -EINVAL; \
-        return count; \
+        schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
-} \
+}
-static DEVICE_ATTR(value, S_IWUGO | S_IRUGO | S_IWUSR, \
-        show_bool_##value, set_bool_##value);
+static int acer_rfkill_set(void *data, enum rfkill_state state)
+{
-show_set_bool(wireless, ACER_CAP_WIRELESS);
+        acpi_status status;
-show_set_bool(bluetooth, ACER_CAP_BLUETOOTH);
+        u32 *cap = data;
-show_set_bool(threeg, ACER_CAP_THREEG);
+        status = set_u32((u32) (state == RFKILL_STATE_UNBLOCKED), *cap);
+        if (ACPI_FAILURE(status))
+                return -ENODEV;
+        return 0;
+}
+static struct rfkill * acer_rfkill_register(struct device *dev,
+enum rfkill_type type, char *name, u32 cap)
+{
+        int err;
+        u32 state;
+        u32 *data;
+        struct rfkill *rfkill_dev;
+        rfkill_dev = rfkill_allocate(dev, type);
+        if (!rfkill_dev)
+                return ERR_PTR(-ENOMEM);
+        rfkill_dev->name = name;
+        get_u32(&state, cap);
+        rfkill_dev->state = state ? RFKILL_STATE_UNBLOCKED :
+                RFKILL_STATE_SOFT_BLOCKED;
+        data = kzalloc(sizeof(u32), GFP_KERNEL);
+        if (!data) {
+                rfkill_free(rfkill_dev);
+                return ERR_PTR(-ENOMEM);
+        }
+        *data = cap;
+        rfkill_dev->data = data;
+        rfkill_dev->toggle_radio = acer_rfkill_set;
+        rfkill_dev->user_claim_unsupported = 1;
+        err = rfkill_register(rfkill_dev);
+        if (err) {
+                kfree(rfkill_dev->data);
+                rfkill_free(rfkill_dev);
+                return ERR_PTR(err);
+        }
+        return rfkill_dev;
+}
+static int acer_rfkill_init(struct device *dev)
+{
+        wireless_rfkill = acer_rfkill_register(dev, RFKILL_TYPE_WLAN,
+                "acer-wireless", ACER_CAP_WIRELESS);
+        if (IS_ERR(wireless_rfkill))
+                return PTR_ERR(wireless_rfkill);
+        if (has_cap(ACER_CAP_BLUETOOTH)) {
+                bluetooth_rfkill = acer_rfkill_register(dev,
+                        RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
+                        ACER_CAP_BLUETOOTH);
+                if (IS_ERR(bluetooth_rfkill)) {
+                        kfree(wireless_rfkill->data);
+                        rfkill_unregister(wireless_rfkill);
+                        return PTR_ERR(bluetooth_rfkill);
+                }
+        }
+        schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
+        return 0;
+}
+static void acer_rfkill_exit(void)
+{
+        cancel_delayed_work_sync(&acer_rfkill_work);
+        kfree(wireless_rfkill->data);
+        rfkill_unregister(wireless_rfkill);
+        if (has_cap(ACER_CAP_BLUETOOTH)) {
+                kfree(wireless_rfkill->data);
+                rfkill_unregister(bluetooth_rfkill);
+        }
+        return;
+}
 /*
- * Read interface sysfs macro
+ * sysfs interface
 */
+static ssize_t show_bool_threeg(struct device *dev,
+        struct device_attribute *attr, char *buf)
+{
+        u32 result; \
+        acpi_status status = get_u32(&result, ACER_CAP_THREEG);
+        if (ACPI_SUCCESS(status))
+                return sprintf(buf, "%u\n", result);
+        return sprintf(buf, "Read error\n");
+}
+static ssize_t set_bool_threeg(struct device *dev,
+        struct device_attribute *attr, const char *buf, size_t count)
+{
+        u32 tmp = simple_strtoul(buf, NULL, 10);
+        acpi_status status = set_u32(tmp, ACER_CAP_THREEG);
+                if (ACPI_FAILURE(status))
+                        return -EINVAL;
+        return count;
+}
+static DEVICE_ATTR(threeg, S_IWUGO | S_IRUGO | S_IWUSR, show_bool_threeg,
+        set_bool_threeg);
 static ssize_t show_interface(struct device *dev, struct device_attribute *attr,
        char *buf)
 {
@@ -1026,7 +1116,9 @@ static int __devinit acer_platform_probe(struct platform_device *device)
                        goto error_brightness;
        }
-        return 0;
+        err = acer_rfkill_init(&device->dev);
+        return err;
 error_brightness:
        acer_led_exit();
@@ -1040,6 +1132,8 @@ static int acer_platform_remove(struct platform_device *device)
                acer_led_exit();
        if (has_cap(ACER_CAP_BRIGHTNESS))
                acer_backlight_exit();
+        acer_rfkill_exit();
        return 0;
 }
@@ -1052,16 +1146,6 @@ pm_message_t state)
        if (!data)
                return -ENOMEM;
-        if (has_cap(ACER_CAP_WIRELESS)) {
-                get_u32(&value, ACER_CAP_WIRELESS);
-                data->wireless = value;
-        }
-        if (has_cap(ACER_CAP_BLUETOOTH)) {
-                get_u32(&value, ACER_CAP_BLUETOOTH);
-                data->bluetooth = value;
-        }
        if (has_cap(ACER_CAP_MAILLED)) {
                get_u32(&value, ACER_CAP_MAILLED);
                data->mailled = value;
@@ -1082,15 +1166,6 @@ static int acer_platform_resume(struct platform_device *device)
        if (!data)
                return -ENOMEM;
-        if (has_cap(ACER_CAP_WIRELESS))
-                set_u32(data->wireless, ACER_CAP_WIRELESS);
-        if (has_cap(ACER_CAP_BLUETOOTH))
-                set_u32(data->bluetooth, ACER_CAP_BLUETOOTH);
-        if (has_cap(ACER_CAP_THREEG))
-                set_u32(data->threeg, ACER_CAP_THREEG);
        if (has_cap(ACER_CAP_MAILLED))
                set_u32(data->mailled, ACER_CAP_MAILLED);
@@ -1115,12 +1190,6 @@ static struct platform_device *acer_platform_device;
 static int remove_sysfs(struct platform_device *device)
 {
-        if (has_cap(ACER_CAP_WIRELESS))
-                device_remove_file(&device->dev, &dev_attr_wireless);
-        if (has_cap(ACER_CAP_BLUETOOTH))
-                device_remove_file(&device->dev, &dev_attr_bluetooth);
        if (has_cap(ACER_CAP_THREEG))
                device_remove_file(&device->dev, &dev_attr_threeg);
@@ -1133,20 +1202,6 @@ static int create_sysfs(void)
 {
        int retval = -ENOMEM;
-        if (has_cap(ACER_CAP_WIRELESS)) {
-                retval = device_create_file(&acer_platform_device->dev,
-                        &dev_attr_wireless);
-                if (retval)
-                        goto error_sysfs;
-        }
-        if (has_cap(ACER_CAP_BLUETOOTH)) {
-                retval = device_create_file(&acer_platform_device->dev,
-                        &dev_attr_bluetooth);
-                if (retval)
-                        goto error_sysfs;
-        }
        if (has_cap(ACER_CAP_THREEG)) {
                retval = device_create_file(&acer_platform_device->dev,
                        &dev_attr_threeg);
diff --git a/drivers/misc/asus-laptop.c b/drivers/misc/asus-laptop.c
index 7c6dfd03de9f..57d81c713eab 100644
--- a/drivers/misc/asus-laptop.c
+++ b/drivers/misc/asus-laptop.c
@@ -139,6 +139,7 @@ ASUS_HANDLE(lcd_switch, "\\_SB.PCI0.SBRG.EC0._Q10",	/* All new models */
            "\\_SB.PCI0.PX40.ECD0._Q10",        /* L3C */
            "\\_SB.PCI0.PX40.EC0.Q10",  /* M1A */
            "\\_SB.PCI0.LPCB.EC0._Q10", /* P30 */
+            "\\_SB.PCI0.LPCB.EC0._Q0E", /* P30/P35 */
            "\\_SB.PCI0.PX40.Q10",      /* S1x */
            "\\Q10");           /* A2x, L2D, L3D, M2E */
@@ -350,7 +351,7 @@ static void write_status(acpi_handle handle, int out, int mask)
        static void object##_led_set(struct led_classdev *led_cdev,     \
                                     enum led_brightness value)         \
        {                                                               \
-                object##_led_wk = value;                                \
+                object##_led_wk = (value > 0) ? 1 : 0;                  \
                queue_work(led_workqueue, &object##_led_work);          \
        }                                                               \
        static void object##_led_update(struct work_struct *ignored)    \
@@ -996,7 +997,7 @@ static int asus_hotk_add(struct acpi_device *device)
        hotk->handle = device->handle;
        strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME);
        strcpy(acpi_device_class(device), ASUS_HOTK_CLASS);
-        acpi_driver_data(device) = hotk;
+        device->driver_data = hotk;
        hotk->device = device;
        result = asus_hotk_check();
diff --git a/drivers/misc/eeepc-laptop.c b/drivers/misc/eeepc-laptop.c
index 1ee8501e90f1..7b39e0f0f1be 100644
--- a/drivers/misc/eeepc-laptop.c
+++ b/drivers/misc/eeepc-laptop.c
@@ -28,6 +28,8 @@
 #include <acpi/acpi_drivers.h>
 #include <acpi/acpi_bus.h>
 #include <linux/uaccess.h>
+#include <linux/input.h>
+#include <linux/rfkill.h>
 #define EEEPC_LAPTOP_VERSION    "0.1"
@@ -125,6 +127,10 @@ struct eeepc_hotk {
                                           by this BIOS */
        uint init_flag;                 /* Init flags */
        u16 event_count[128];           /* count for each event */
+        struct input_dev *inputdev;
+        u16 *keycode_map;
+        struct rfkill *eeepc_wlan_rfkill;
+        struct rfkill *eeepc_bluetooth_rfkill;
 };
 /* The actual device the driver binds to */
@@ -140,6 +146,27 @@ static struct platform_driver platform_driver = {
 static struct platform_device *platform_device;
+struct key_entry {
+        char type;
+        u8 code;
+        u16 keycode;
+};
+enum { KE_KEY, KE_END };
+static struct key_entry eeepc_keymap[] = {
+        /* Sleep already handled via generic ACPI code */
+        {KE_KEY, 0x10, KEY_WLAN },
+        {KE_KEY, 0x12, KEY_PROG1 },
+        {KE_KEY, 0x13, KEY_MUTE },
+        {KE_KEY, 0x14, KEY_VOLUMEDOWN },
+        {KE_KEY, 0x15, KEY_VOLUMEUP },
+        {KE_KEY, 0x30, KEY_SWITCHVIDEOMODE },
+        {KE_KEY, 0x31, KEY_SWITCHVIDEOMODE },
+        {KE_KEY, 0x32, KEY_SWITCHVIDEOMODE },
+        {KE_END, 0},
+};
 /*
 * The hotkey driver declaration
 */
@@ -261,6 +288,44 @@ static int update_bl_status(struct backlight_device *bd)
 }
 /*
+ * Rfkill helpers
+ */
+static int eeepc_wlan_rfkill_set(void *data, enum rfkill_state state)
+{
+        if (state == RFKILL_STATE_SOFT_BLOCKED)
+                return set_acpi(CM_ASL_WLAN, 0);
+        else
+                return set_acpi(CM_ASL_WLAN, 1);
+}
+static int eeepc_wlan_rfkill_state(void *data, enum rfkill_state *state)
+{
+        if (get_acpi(CM_ASL_WLAN) == 1)
+                *state = RFKILL_STATE_UNBLOCKED;
+        else
+                *state = RFKILL_STATE_SOFT_BLOCKED;
+        return 0;
+}
+static int eeepc_bluetooth_rfkill_set(void *data, enum rfkill_state state)
+{
+        if (state == RFKILL_STATE_SOFT_BLOCKED)
+                return set_acpi(CM_ASL_BLUETOOTH, 0);
+        else
+                return set_acpi(CM_ASL_BLUETOOTH, 1);
+}
+static int eeepc_bluetooth_rfkill_state(void *data, enum rfkill_state *state)
+{
+        if (get_acpi(CM_ASL_BLUETOOTH) == 1)
+                *state = RFKILL_STATE_UNBLOCKED;
+        else
+                *state = RFKILL_STATE_SOFT_BLOCKED;
+        return 0;
+}
+/*
 * Sys helpers
 */
 static int parse_arg(const char *buf, unsigned long count, int *val)
@@ -311,13 +376,11 @@ static ssize_t show_sys_acpi(int cm, char *buf)
 EEEPC_CREATE_DEVICE_ATTR(camera, CM_ASL_CAMERA);
 EEEPC_CREATE_DEVICE_ATTR(cardr, CM_ASL_CARDREADER);
 EEEPC_CREATE_DEVICE_ATTR(disp, CM_ASL_DISPLAYSWITCH);
-EEEPC_CREATE_DEVICE_ATTR(wlan, CM_ASL_WLAN);
 static struct attribute *platform_attributes[] = {
        &dev_attr_camera.attr,
        &dev_attr_cardr.attr,
        &dev_attr_disp.attr,
-        &dev_attr_wlan.attr,
        NULL
 };
@@ -328,8 +391,64 @@ static struct attribute_group platform_attribute_group = {
 /*
 * Hotkey functions
 */
+static struct key_entry *eepc_get_entry_by_scancode(int code)
+{
+        struct key_entry *key;
+        for (key = eeepc_keymap; key->type != KE_END; key++)
+                if (code == key->code)
+                        return key;
+        return NULL;
+}
+static struct key_entry *eepc_get_entry_by_keycode(int code)
+{
+        struct key_entry *key;
+        for (key = eeepc_keymap; key->type != KE_END; key++)
+                if (code == key->keycode && key->type == KE_KEY)
+                        return key;
+        return NULL;
+}
+static int eeepc_getkeycode(struct input_dev *dev, int scancode, int *keycode)
+{
+        struct key_entry *key = eepc_get_entry_by_scancode(scancode);
+        if (key && key->type == KE_KEY) {
+                *keycode = key->keycode;
+                return 0;
+        }
+        return -EINVAL;
+}
+static int eeepc_setkeycode(struct input_dev *dev, int scancode, int keycode)
+{
+        struct key_entry *key;
+        int old_keycode;
+        if (keycode < 0 || keycode > KEY_MAX)
+                return -EINVAL;
+        key = eepc_get_entry_by_scancode(scancode);
+        if (key && key->type == KE_KEY) {
+                old_keycode = key->keycode;
+                key->keycode = keycode;
+                set_bit(keycode, dev->keybit);
+                if (!eepc_get_entry_by_keycode(old_keycode))
+                        clear_bit(old_keycode, dev->keybit);
+                return 0;
+        }
+        return -EINVAL;
+}
 static int eeepc_hotk_check(void)
 {
+        const struct key_entry *key;
        struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
        int result;
@@ -356,6 +475,31 @@ static int eeepc_hotk_check(void)
                               "Get control methods supported: 0x%x\n",
                               ehotk->cm_supported);
                }
+                ehotk->inputdev = input_allocate_device();
+                if (!ehotk->inputdev) {
+                        printk(EEEPC_INFO "Unable to allocate input device\n");
+                        return 0;
+                }
+                ehotk->inputdev->name = "Asus EeePC extra buttons";
+                ehotk->inputdev->phys = EEEPC_HOTK_FILE "/input0";
+                ehotk->inputdev->id.bustype = BUS_HOST;
+                ehotk->inputdev->getkeycode = eeepc_getkeycode;
+                ehotk->inputdev->setkeycode = eeepc_setkeycode;
+                for (key = eeepc_keymap; key->type != KE_END; key++) {
+                        switch (key->type) {
+                        case KE_KEY:
+                                set_bit(EV_KEY, ehotk->inputdev->evbit);
+                                set_bit(key->keycode, ehotk->inputdev->keybit);
+                                break;
+                        }
+                }
+                result = input_register_device(ehotk->inputdev);
+                if (result) {
+                        printk(EEEPC_INFO "Unable to register input device\n");
+                        input_free_device(ehotk->inputdev);
+                        return 0;
+                }
        } else {
                printk(EEEPC_ERR "Hotkey device not present, aborting\n");
                return -EINVAL;
@@ -363,21 +507,6 @@ static int eeepc_hotk_check(void)
        return 0;
 }
-static void notify_wlan(u32 *event)
-{
-        /* if DISABLE_ASL_WLAN is set, the notify code for fn+f2
-           will always be 0x10 */
-        if (ehotk->cm_supported & (0x1 << CM_ASL_WLAN)) {
-                const char *method = cm_getv[CM_ASL_WLAN];
-                int value;
-                if (read_acpi_int(ehotk->handle, method, &value))
-                        printk(EEEPC_WARNING "Error reading %s\n",
-                               method);
-                else if (value == 1)
-                        *event = 0x11;
-        }
-}
 static void notify_brn(void)
 {
        struct backlight_device *bd = eeepc_backlight_device;
@@ -386,14 +515,28 @@ static void notify_brn(void)
 static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data)
 {
+        static struct key_entry *key;
        if (!ehotk)
                return;
-        if (event == NOTIFY_WLAN_ON && (DISABLE_ASL_WLAN & ehotk->init_flag))
-                notify_wlan(&event);
        if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX)
                notify_brn();
        acpi_bus_generate_proc_event(ehotk->device, event,
                                     ehotk->event_count[event % 128]++);
+        if (ehotk->inputdev) {
+                key = eepc_get_entry_by_scancode(event);
+                if (key) {
+                        switch (key->type) {
+                        case KE_KEY:
+                                input_report_key(ehotk->inputdev, key->keycode,
+                                                 1);
+                                input_sync(ehotk->inputdev);
+                                input_report_key(ehotk->inputdev, key->keycode,
+                                                 0);
+                                input_sync(ehotk->inputdev);
+                                break;
+                        }
+                }
+        }
 }
 static int eeepc_hotk_add(struct acpi_device *device)
@@ -411,7 +554,7 @@ static int eeepc_hotk_add(struct acpi_device *device)
        ehotk->handle = device->handle;
        strcpy(acpi_device_name(device), EEEPC_HOTK_DEVICE_NAME);
        strcpy(acpi_device_class(device), EEEPC_HOTK_CLASS);
-        acpi_driver_data(device) = ehotk;
+        device->driver_data = ehotk;
        ehotk->device = device;
        result = eeepc_hotk_check();
        if (result)
@@ -420,6 +563,47 @@ static int eeepc_hotk_add(struct acpi_device *device)
                                             eeepc_hotk_notify, ehotk);
        if (ACPI_FAILURE(status))
                printk(EEEPC_ERR "Error installing notify handler\n");
+        if (get_acpi(CM_ASL_WLAN) != -1) {
+                ehotk->eeepc_wlan_rfkill = rfkill_allocate(&device->dev,
+                                                           RFKILL_TYPE_WLAN);
+                if (!ehotk->eeepc_wlan_rfkill)
+                        goto end;
+                ehotk->eeepc_wlan_rfkill->name = "eeepc-wlan";
+                ehotk->eeepc_wlan_rfkill->toggle_radio = eeepc_wlan_rfkill_set;
+                ehotk->eeepc_wlan_rfkill->get_state = eeepc_wlan_rfkill_state;
+                if (get_acpi(CM_ASL_WLAN) == 1)
+                        ehotk->eeepc_wlan_rfkill->state =
+                                RFKILL_STATE_UNBLOCKED;
+                else
+                        ehotk->eeepc_wlan_rfkill->state =
+                                RFKILL_STATE_SOFT_BLOCKED;
+                rfkill_register(ehotk->eeepc_wlan_rfkill);
+        }
+        if (get_acpi(CM_ASL_BLUETOOTH) != -1) {
+                ehotk->eeepc_bluetooth_rfkill =
+                        rfkill_allocate(&device->dev, RFKILL_TYPE_BLUETOOTH);
+                if (!ehotk->eeepc_bluetooth_rfkill)
+                        goto end;
+                ehotk->eeepc_bluetooth_rfkill->name = "eeepc-bluetooth";
+                ehotk->eeepc_bluetooth_rfkill->toggle_radio =
+                        eeepc_bluetooth_rfkill_set;
+                ehotk->eeepc_bluetooth_rfkill->get_state =
+                        eeepc_bluetooth_rfkill_state;
+                if (get_acpi(CM_ASL_BLUETOOTH) == 1)
+                        ehotk->eeepc_bluetooth_rfkill->state =
+                                RFKILL_STATE_UNBLOCKED;
+                else
+                        ehotk->eeepc_bluetooth_rfkill->state =
+                                RFKILL_STATE_SOFT_BLOCKED;
+                rfkill_register(ehotk->eeepc_bluetooth_rfkill);
+        }
 end:
        if (result) {
                kfree(ehotk);
@@ -553,6 +737,12 @@ static void eeepc_backlight_exit(void)
 {
        if (eeepc_backlight_device)
                backlight_device_unregister(eeepc_backlight_device);
+        if (ehotk->inputdev)
+                input_unregister_device(ehotk->inputdev);
+        if (ehotk->eeepc_wlan_rfkill)
+                rfkill_unregister(ehotk->eeepc_wlan_rfkill);
+        if (ehotk->eeepc_bluetooth_rfkill)
+                rfkill_unregister(ehotk->eeepc_bluetooth_rfkill);
        eeepc_backlight_device = NULL;
 }
diff --git a/drivers/misc/fujitsu-laptop.c b/drivers/misc/fujitsu-laptop.c
index 3e56203e4947..8555a17f00ef 100644
--- a/drivers/misc/fujitsu-laptop.c
+++ b/drivers/misc/fujitsu-laptop.c
@@ -44,8 +44,9 @@
 * Hotkeys present on certain Fujitsu laptops (eg: the S6xxx series) are
 * also supported by this driver.
 *
- * This driver has been tested on a Fujitsu Lifebook S6410 and S7020.  It
+ * This driver has been tested on a Fujitsu Lifebook S6410, S7020 and
- * should work on most P-series and S-series Lifebooks, but YMMV.
+ * P8010.  It should work on most P-series and S-series Lifebooks, but
+ * YMMV.
 *
 * The module parameter use_alt_lcd_levels switches between different ACPI
 * brightness controls which are used by different Fujitsu laptops.  In most
@@ -65,7 +66,7 @@
 #include <linux/video_output.h>
 #include <linux/platform_device.h>
-#define FUJITSU_DRIVER_VERSION "0.4.2"
+#define FUJITSU_DRIVER_VERSION "0.4.3"
 #define FUJITSU_LCD_N_LEVELS 8
@@ -83,10 +84,10 @@
 #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS     0x87
 /* Hotkey details */
-#define LOCK_KEY        0x410   /* codes for the keys in the GIRB register */
+#define KEY1_CODE       0x410   /* codes for the keys in the GIRB register */
-#define DISPLAY_KEY     0x411   /* keys are mapped to KEY_SCREENLOCK (the key with the key symbol) */
+#define KEY2_CODE       0x411
-#define ENERGY_KEY      0x412   /* KEY_MEDIA (the key with the laptop symbol, KEY_EMAIL (E key)) */
+#define KEY3_CODE       0x412
-#define REST_KEY        0x413   /* KEY_SUSPEND (R key) */
+#define KEY4_CODE       0x413
 #define MAX_HOTKEY_RINGBUFFER_SIZE 100
 #define RINGBUFFERSIZE 40
@@ -123,6 +124,7 @@ struct fujitsu_t {
        char phys[32];
        struct backlight_device *bl_device;
        struct platform_device *pf_device;
+        int keycode1, keycode2, keycode3, keycode4;
        unsigned int max_brightness;
        unsigned int brightness_changed;
@@ -430,7 +432,7 @@ static struct platform_driver fujitsupf_driver = {
                   }
 };
-static int dmi_check_cb_s6410(const struct dmi_system_id *id)
+static void dmi_check_cb_common(const struct dmi_system_id *id)
 {
        acpi_handle handle;
        int have_blnf;
@@ -452,24 +454,40 @@ static int dmi_check_cb_s6410(const struct dmi_system_id *id)
                            "auto-detecting disable_adjust\n");
                disable_brightness_adjust = have_blnf ? 0 : 1;
        }
+}
+static int dmi_check_cb_s6410(const struct dmi_system_id *id)
+{
+        dmi_check_cb_common(id);
+        fujitsu->keycode1 = KEY_SCREENLOCK;     /* "Lock" */
+        fujitsu->keycode2 = KEY_HELP;   /* "Mobility Center" */
+        return 0;
+}
+static int dmi_check_cb_p8010(const struct dmi_system_id *id)
+{
+        dmi_check_cb_common(id);
+        fujitsu->keycode1 = KEY_HELP;   /* "Support" */
+        fujitsu->keycode3 = KEY_SWITCHVIDEOMODE;        /* "Presentation" */
+        fujitsu->keycode4 = KEY_WWW;    /* "Internet" */
        return 0;
 }
 static struct dmi_system_id __initdata fujitsu_dmi_table[] = {
        {
-         .ident = "Fujitsu Siemens",
+         .ident = "Fujitsu Siemens S6410",
         .matches = {
                     DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
                     DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"),
                     },
         .callback = dmi_check_cb_s6410},
        {
-         .ident = "FUJITSU LifeBook P8010",
+         .ident = "Fujitsu LifeBook P8010",
         .matches = {
                     DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
                     DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"),
-                    },
+                     },
-         .callback = dmi_check_cb_s6410},
+         .callback = dmi_check_cb_p8010},
        {}
 };
@@ -490,7 +508,7 @@ static int acpi_fujitsu_add(struct acpi_device *device)
        fujitsu->acpi_handle = device->handle;
        sprintf(acpi_device_name(device), "%s", ACPI_FUJITSU_DEVICE_NAME);
        sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
-        acpi_driver_data(device) = fujitsu;
+        device->driver_data = fujitsu;
        status = acpi_install_notify_handler(device->handle,
                                             ACPI_DEVICE_NOTIFY,
@@ -547,7 +565,6 @@ static int acpi_fujitsu_add(struct acpi_device *device)
        }
        /* do config (detect defaults) */
-        dmi_check_system(fujitsu_dmi_table);
        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;
@@ -623,17 +640,17 @@ static void acpi_fujitsu_notify(acpi_handle handle, u32 event, void *data)
                        keycode = 0;
                        if (disable_brightness_keys != 1) {
                                if (oldb == 0) {
-                                        acpi_bus_generate_proc_event(fujitsu->
+                                        acpi_bus_generate_proc_event
-                                                dev,
+                                            (fujitsu->dev,
-                                                ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS,
+                                             ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS,
-                                                0);
+                                             0);
                                        keycode = KEY_BRIGHTNESSDOWN;
                                } else if (oldb ==
                                           (fujitsu->max_brightness) - 1) {
-                                        acpi_bus_generate_proc_event(fujitsu->
+                                        acpi_bus_generate_proc_event
-                                                dev,
+                                            (fujitsu->dev,
-                                                ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS,
+                                             ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS,
-                                                0);
+                                             0);
                                        keycode = KEY_BRIGHTNESSUP;
                                }
                        }
@@ -646,8 +663,7 @@ static void acpi_fujitsu_notify(acpi_handle handle, u32 event, void *data)
                        }
                        if (disable_brightness_keys != 1) {
                                acpi_bus_generate_proc_event(fujitsu->dev,
-                                        ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS,
+                                        ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS, 0);
-                                        0);
                                keycode = KEY_BRIGHTNESSUP;
                        }
                } else if (oldb > newb) {
@@ -659,8 +675,7 @@ static void acpi_fujitsu_notify(acpi_handle handle, u32 event, void *data)
                        }
                        if (disable_brightness_keys != 1) {
                                acpi_bus_generate_proc_event(fujitsu->dev,
-                                        ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS,
+                                        ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS, 0);
-                                        0);
                                keycode = KEY_BRIGHTNESSDOWN;
                        }
                } else {
@@ -703,7 +718,7 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
        sprintf(acpi_device_name(device), "%s",
                ACPI_FUJITSU_HOTKEY_DEVICE_NAME);
        sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
-        acpi_driver_data(device) = fujitsu_hotkey;
+        device->driver_data = fujitsu_hotkey;
        status = acpi_install_notify_handler(device->handle,
                                             ACPI_DEVICE_NOTIFY,
@@ -742,10 +757,10 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device)
        input->id.product = 0x06;
        input->dev.parent = &device->dev;
        input->evbit[0] = BIT(EV_KEY);
-        set_bit(KEY_SCREENLOCK, input->keybit);
+        set_bit(fujitsu->keycode1, input->keybit);
-        set_bit(KEY_MEDIA, input->keybit);
+        set_bit(fujitsu->keycode2, input->keybit);
-        set_bit(KEY_EMAIL, input->keybit);
+        set_bit(fujitsu->keycode3, input->keybit);
-        set_bit(KEY_SUSPEND, input->keybit);
+        set_bit(fujitsu->keycode4, input->keybit);
        set_bit(KEY_UNKNOWN, input->keybit);
        error = input_register_device(input);
@@ -833,24 +848,24 @@ static void acpi_fujitsu_hotkey_notify(acpi_handle handle, u32 event,
                                    irb);
                        switch (irb & 0x4ff) {
-                        case LOCK_KEY:
+                        case KEY1_CODE:
-                                keycode = KEY_SCREENLOCK;
+                                keycode = fujitsu->keycode1;
                                break;
-                        case DISPLAY_KEY:
+                        case KEY2_CODE:
-                                keycode = KEY_MEDIA;
+                                keycode = fujitsu->keycode2;
                                break;
-                        case ENERGY_KEY:
+                        case KEY3_CODE:
-                                keycode = KEY_EMAIL;
+                                keycode = fujitsu->keycode3;
                                break;
-                        case REST_KEY:
+                        case KEY4_CODE:
-                                keycode = KEY_SUSPEND;
+                                keycode = fujitsu->keycode4;
                                break;
                        case 0:
                                keycode = 0;
                                break;
                        default:
                                vdbg_printk(FUJLAPTOP_DBG_WARN,
-                                        "Unknown GIRB result [%x]\n", irb);
+                                            "Unknown GIRB result [%x]\n", irb);
                                keycode = -1;
                                break;
                        }
@@ -859,12 +874,12 @@ static void acpi_fujitsu_hotkey_notify(acpi_handle handle, u32 event,
                                        "Push keycode into ringbuffer [%d]\n",
                                        keycode);
                                status = kfifo_put(fujitsu_hotkey->fifo,
-                                                (unsigned char *)&keycode,
+                                                   (unsigned char *)&keycode,
-                                                sizeof(keycode));
+                                                   sizeof(keycode));
                                if (status != sizeof(keycode)) {
                                        vdbg_printk(FUJLAPTOP_DBG_WARN,
-                                                "Could not push keycode [0x%x]\n",
+                                            "Could not push keycode [0x%x]\n",
-                                                keycode);
+                                            keycode);
                                } else {
                                        input_report_key(input, keycode, 1);
                                        input_sync(input);
@@ -879,8 +894,8 @@ static void acpi_fujitsu_hotkey_notify(acpi_handle handle, u32 event,
                                        input_report_key(input, keycode_r, 0);
                                        input_sync(input);
                                        vdbg_printk(FUJLAPTOP_DBG_TRACE,
-                                                    "Pop keycode from ringbuffer [%d]\n",
+                                          "Pop keycode from ringbuffer [%d]\n",
-                                                    keycode_r);
+                                          keycode_r);
                                }
                        }
                }
@@ -943,6 +958,11 @@ static int __init fujitsu_init(void)
        if (!fujitsu)
                return -ENOMEM;
        memset(fujitsu, 0, sizeof(struct fujitsu_t));
+        fujitsu->keycode1 = KEY_PROG1;
+        fujitsu->keycode2 = KEY_PROG2;
+        fujitsu->keycode3 = KEY_PROG3;
+        fujitsu->keycode4 = KEY_PROG4;
+        dmi_check_system(fujitsu_dmi_table);
        result = acpi_bus_register_driver(&acpi_fujitsu_driver);
        if (result < 0) {
@@ -1076,15 +1096,14 @@ MODULE_DESCRIPTION("Fujitsu laptop extras support");
 MODULE_VERSION(FUJITSU_DRIVER_VERSION);
 MODULE_LICENSE("GPL");
-MODULE_ALIAS
+MODULE_ALIAS("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
-    ("dmi:*:svnFUJITSUSIEMENS:*:pvr:rvnFUJITSU:rnFJNB1D3:*:cvrS6410:*");
+MODULE_ALIAS("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
-MODULE_ALIAS
-    ("dmi:*:svnFUJITSU:*:pvr:rvnFUJITSU:rnFJNB19C:*:cvrS7020:*");
 static struct pnp_device_id pnp_ids[] = {
-        { .id = "FUJ02bf" },
+        {.id = "FUJ02bf"},
-        { .id = "FUJ02B1" },
+        {.id = "FUJ02B1"},
-        { .id = "FUJ02E3" },
+        {.id = "FUJ02E3"},
-        { .id = "" }
+        {.id = ""}
 };
 MODULE_DEVICE_TABLE(pnp, pnp_ids);
diff --git a/drivers/misc/intel_menlow.c b/drivers/misc/intel_menlow.c
index 80a136352408..cd3ea7faa5b6 100644
--- a/drivers/misc/intel_menlow.c
+++ b/drivers/misc/intel_menlow.c
@@ -175,7 +175,7 @@ static int intel_menlow_memory_add(struct acpi_device *device)
                goto end;
        }
-        acpi_driver_data(device) = cdev;
+        device->driver_data = cdev;
        result = sysfs_create_link(&device->dev.kobj,
                                &cdev->device.kobj, "thermal_cooling");
        if (result)
diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index 60775be22822..5a97d3a9d745 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -970,7 +970,7 @@ static int sony_nc_resume(struct acpi_device *device)
        /* set the last requested brightness level */
        if (sony_backlight_device &&
                        !sony_backlight_update_status(sony_backlight_device))
-                printk(KERN_WARNING DRV_PFX "unable to restore brightness level");
+                printk(KERN_WARNING DRV_PFX "unable to restore brightness level\n");
        /* re-initialize models with specific requirements */
        dmi_check_system(sony_nc_ids);
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index 6b9300779a43..62aebaa85913 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -543,7 +543,7 @@ static int __init setup_acpi_notify(struct ibm_struct *ibm)
                return -ENODEV;
        }
-        acpi_driver_data(ibm->acpi->device) = ibm;
+        ibm->acpi->device->driver_data = ibm;
        sprintf(acpi_device_class(ibm->acpi->device), "%s/%s",
                TPACPI_ACPI_EVENT_PREFIX,
                ibm->name);
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index a3e4705dd8f0..db54c5ef2aa5 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -169,7 +169,9 @@ static int post_dock_fixups(struct notifier_block *nb, unsigned long val,
 }
+static struct acpi_dock_ops acpiphp_dock_ops = {
+        .handler = handle_hotplug_event_func,
+};
 /* callback routine to register each ACPI PCI slot object */
 static acpi_status
@@ -285,7 +287,7 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
                 */
                newfunc->flags &= ~FUNC_HAS_EJ0;
                if (register_hotplug_dock_device(handle,
-                        handle_hotplug_event_func, newfunc))
+                        &acpiphp_dock_ops, newfunc))
                        dbg("failed to register dock device\n");
                /* we need to be notified when dock events happen
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index b57d9d59dca5..a12800f8e4c9 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -148,9 +148,13 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
        acpi_status status;
        struct pnp_dev *dev;
+        /*
+         * If a PnPacpi device is not present , the device
+         * driver should not be loaded.
+         */
        status = acpi_get_handle(device->handle, "_CRS", &temp);
        if (ACPI_FAILURE(status) || !ispnpidacpi(acpi_device_hid(device)) ||
-            is_exclusive_device(device))
+            is_exclusive_device(device) || (!device->status.present))
                return 0;
        dev = pnp_alloc_dev(&pnpacpi_protocol, num, acpi_device_hid(device));
diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
index 4eb75a88795a..29feee27f0ea 100644
--- a/include/acpi/acconfig.h
+++ b/include/acpi/acconfig.h
@@ -63,7 +63,7 @@
 /* Current ACPICA subsystem version in YYYYMMDD format */
-#define ACPI_CA_VERSION                 0x20080609
+#define ACPI_CA_VERSION                 0x20080926
 /*
 * OS name, used for the _OS object.  The _OS object is essentially obsolete,
diff --git a/include/acpi/acdebug.h b/include/acpi/acdebug.h
index c5a1b50d8d94..62c59df3b86c 100644
--- a/include/acpi/acdebug.h
+++ b/include/acpi/acdebug.h
@@ -123,6 +123,10 @@ void acpi_db_check_integrity(void);
 void acpi_db_generate_gpe(char *gpe_arg, char *block_arg);
+void acpi_db_check_predefined_names(void);
+void acpi_db_batch_execute(void);
 /*
 * dbdisply - debug display commands
 */
@@ -150,6 +154,10 @@ void
 acpi_db_display_argument_object(union acpi_operand_object *obj_desc,
                                struct acpi_walk_state *walk_state);
+void acpi_db_check_predefined_names(void);
+void acpi_db_batch_execute(void);
 /*
 * dbexec - debugger control method execution
 */
diff --git a/include/acpi/acdisasm.h b/include/acpi/acdisasm.h
index f53faca8ec80..0c1ed387073c 100644
--- a/include/acpi/acdisasm.h
+++ b/include/acpi/acdisasm.h
@@ -186,6 +186,8 @@ 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[];
@@ -197,8 +199,10 @@ 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[];
diff --git a/include/acpi/acdispat.h b/include/acpi/acdispat.h
index 21a73a105d0a..6291904be01e 100644
--- a/include/acpi/acdispat.h
+++ b/include/acpi/acdispat.h
@@ -157,7 +157,7 @@ acpi_ds_init_callbacks(struct acpi_walk_state *walk_state, u32 pass_number);
 * dsmthdat - method data (locals/args)
 */
 acpi_status
-acpi_ds_store_object_to_local(u16 opcode,
+acpi_ds_store_object_to_local(u8 type,
                              u32 index,
                              union acpi_operand_object *src_desc,
                              struct acpi_walk_state *walk_state);
@@ -173,7 +173,7 @@ void acpi_ds_method_data_delete_all(struct acpi_walk_state *walk_state);
 u8 acpi_ds_is_method_value(union acpi_operand_object *obj_desc);
 acpi_status
-acpi_ds_method_data_get_value(u16 opcode,
+acpi_ds_method_data_get_value(u8 type,
                              u32 index,
                              struct acpi_walk_state *walk_state,
                              union acpi_operand_object **dest_desc);
@@ -184,7 +184,7 @@ acpi_ds_method_data_init_args(union acpi_operand_object **params,
                              struct acpi_walk_state *walk_state);
 acpi_status
-acpi_ds_method_data_get_node(u16 opcode,
+acpi_ds_method_data_get_node(u8 type,
                             u32 index,
                             struct acpi_walk_state *walk_state,
                             struct acpi_namespace_node **node);
diff --git a/include/acpi/acexcep.h b/include/acpi/acexcep.h
index e5a890ffeb02..84f5cb242863 100644
--- a/include/acpi/acexcep.h
+++ b/include/acpi/acexcep.h
@@ -76,25 +76,21 @@
 #define AE_STACK_OVERFLOW               (acpi_status) (0x000C | AE_CODE_ENVIRONMENTAL)
 #define AE_STACK_UNDERFLOW              (acpi_status) (0x000D | AE_CODE_ENVIRONMENTAL)
 #define AE_NOT_IMPLEMENTED              (acpi_status) (0x000E | AE_CODE_ENVIRONMENTAL)
-#define AE_VERSION_MISMATCH             (acpi_status) (0x000F | AE_CODE_ENVIRONMENTAL)
+#define AE_SUPPORT                      (acpi_status) (0x000F | AE_CODE_ENVIRONMENTAL)
-#define AE_SUPPORT                      (acpi_status) (0x0010 | AE_CODE_ENVIRONMENTAL)
+#define AE_LIMIT                        (acpi_status) (0x0010 | AE_CODE_ENVIRONMENTAL)
-#define AE_SHARE                        (acpi_status) (0x0011 | AE_CODE_ENVIRONMENTAL)
+#define AE_TIME                         (acpi_status) (0x0011 | AE_CODE_ENVIRONMENTAL)
-#define AE_LIMIT                        (acpi_status) (0x0012 | AE_CODE_ENVIRONMENTAL)
+#define AE_ACQUIRE_DEADLOCK             (acpi_status) (0x0012 | AE_CODE_ENVIRONMENTAL)
-#define AE_TIME                         (acpi_status) (0x0013 | AE_CODE_ENVIRONMENTAL)
+#define AE_RELEASE_DEADLOCK             (acpi_status) (0x0013 | AE_CODE_ENVIRONMENTAL)
-#define AE_UNKNOWN_STATUS               (acpi_status) (0x0014 | AE_CODE_ENVIRONMENTAL)
+#define AE_NOT_ACQUIRED                 (acpi_status) (0x0014 | AE_CODE_ENVIRONMENTAL)
-#define AE_ACQUIRE_DEADLOCK             (acpi_status) (0x0015 | AE_CODE_ENVIRONMENTAL)
+#define AE_ALREADY_ACQUIRED             (acpi_status) (0x0015 | AE_CODE_ENVIRONMENTAL)
-#define AE_RELEASE_DEADLOCK             (acpi_status) (0x0016 | AE_CODE_ENVIRONMENTAL)
+#define AE_NO_HARDWARE_RESPONSE         (acpi_status) (0x0016 | AE_CODE_ENVIRONMENTAL)
-#define AE_NOT_ACQUIRED                 (acpi_status) (0x0017 | AE_CODE_ENVIRONMENTAL)
+#define AE_NO_GLOBAL_LOCK               (acpi_status) (0x0017 | AE_CODE_ENVIRONMENTAL)
-#define AE_ALREADY_ACQUIRED             (acpi_status) (0x0018 | AE_CODE_ENVIRONMENTAL)
+#define AE_ABORT_METHOD                 (acpi_status) (0x0018 | AE_CODE_ENVIRONMENTAL)
-#define AE_NO_HARDWARE_RESPONSE         (acpi_status) (0x0019 | AE_CODE_ENVIRONMENTAL)
+#define AE_SAME_HANDLER                 (acpi_status) (0x0019 | AE_CODE_ENVIRONMENTAL)
-#define AE_NO_GLOBAL_LOCK               (acpi_status) (0x001A | AE_CODE_ENVIRONMENTAL)
+#define AE_WAKE_ONLY_GPE                (acpi_status) (0x001A | AE_CODE_ENVIRONMENTAL)
-#define AE_LOGICAL_ADDRESS              (acpi_status) (0x001B | AE_CODE_ENVIRONMENTAL)
+#define AE_OWNER_ID_LIMIT               (acpi_status) (0x001B | AE_CODE_ENVIRONMENTAL)
-#define AE_ABORT_METHOD                 (acpi_status) (0x001C | AE_CODE_ENVIRONMENTAL)
-#define AE_SAME_HANDLER                 (acpi_status) (0x001D | AE_CODE_ENVIRONMENTAL)
-#define AE_WAKE_ONLY_GPE                (acpi_status) (0x001E | AE_CODE_ENVIRONMENTAL)
-#define AE_OWNER_ID_LIMIT               (acpi_status) (0x001F | AE_CODE_ENVIRONMENTAL)
-#define AE_CODE_ENV_MAX                 0x001F
+#define AE_CODE_ENV_MAX                 0x001B
 /*
 * Programmer exceptions
@@ -103,14 +99,12 @@
 #define AE_BAD_CHARACTER                (acpi_status) (0x0002 | AE_CODE_PROGRAMMER)
 #define AE_BAD_PATHNAME                 (acpi_status) (0x0003 | AE_CODE_PROGRAMMER)
 #define AE_BAD_DATA                     (acpi_status) (0x0004 | AE_CODE_PROGRAMMER)
-#define AE_BAD_ADDRESS                  (acpi_status) (0x0005 | AE_CODE_PROGRAMMER)
+#define AE_BAD_HEX_CONSTANT             (acpi_status) (0x0005 | AE_CODE_PROGRAMMER)
-#define AE_ALIGNMENT                    (acpi_status) (0x0006 | AE_CODE_PROGRAMMER)
+#define AE_BAD_OCTAL_CONSTANT           (acpi_status) (0x0006 | AE_CODE_PROGRAMMER)
-#define AE_BAD_HEX_CONSTANT             (acpi_status) (0x0007 | AE_CODE_PROGRAMMER)
+#define AE_BAD_DECIMAL_CONSTANT         (acpi_status) (0x0007 | AE_CODE_PROGRAMMER)
-#define AE_BAD_OCTAL_CONSTANT           (acpi_status) (0x0008 | AE_CODE_PROGRAMMER)
+#define AE_MISSING_ARGUMENTS            (acpi_status) (0x0008 | AE_CODE_PROGRAMMER)
-#define AE_BAD_DECIMAL_CONSTANT         (acpi_status) (0x0009 | AE_CODE_PROGRAMMER)
-#define AE_MISSING_ARGUMENTS            (acpi_status) (0x000A | AE_CODE_PROGRAMMER)
-#define AE_CODE_PGM_MAX                 0x000A
+#define AE_CODE_PGM_MAX                 0x0008
 /*
 * Acpi table exceptions
@@ -119,51 +113,48 @@
 #define AE_BAD_HEADER                   (acpi_status) (0x0002 | AE_CODE_ACPI_TABLES)
 #define AE_BAD_CHECKSUM                 (acpi_status) (0x0003 | AE_CODE_ACPI_TABLES)
 #define AE_BAD_VALUE                    (acpi_status) (0x0004 | AE_CODE_ACPI_TABLES)
-#define AE_TABLE_NOT_SUPPORTED          (acpi_status) (0x0005 | AE_CODE_ACPI_TABLES)
+#define AE_INVALID_TABLE_LENGTH         (acpi_status) (0x0005 | AE_CODE_ACPI_TABLES)
-#define AE_INVALID_TABLE_LENGTH         (acpi_status) (0x0006 | AE_CODE_ACPI_TABLES)
-#define AE_CODE_TBL_MAX                 0x0006
+#define AE_CODE_TBL_MAX                 0x0005
 /*
 * AML exceptions.  These are caused by problems with
 * the actual AML byte stream
 */
-#define AE_AML_ERROR                    (acpi_status) (0x0001 | AE_CODE_AML)
+#define AE_AML_BAD_OPCODE               (acpi_status) (0x0001 | AE_CODE_AML)
-#define AE_AML_PARSE                    (acpi_status) (0x0002 | AE_CODE_AML)
+#define AE_AML_NO_OPERAND               (acpi_status) (0x0002 | AE_CODE_AML)
-#define AE_AML_BAD_OPCODE               (acpi_status) (0x0003 | AE_CODE_AML)
+#define AE_AML_OPERAND_TYPE             (acpi_status) (0x0003 | AE_CODE_AML)
-#define AE_AML_NO_OPERAND               (acpi_status) (0x0004 | AE_CODE_AML)
+#define AE_AML_OPERAND_VALUE            (acpi_status) (0x0004 | AE_CODE_AML)
-#define AE_AML_OPERAND_TYPE             (acpi_status) (0x0005 | AE_CODE_AML)
+#define AE_AML_UNINITIALIZED_LOCAL      (acpi_status) (0x0005 | AE_CODE_AML)
-#define AE_AML_OPERAND_VALUE            (acpi_status) (0x0006 | AE_CODE_AML)
+#define AE_AML_UNINITIALIZED_ARG        (acpi_status) (0x0006 | AE_CODE_AML)
-#define AE_AML_UNINITIALIZED_LOCAL      (acpi_status) (0x0007 | AE_CODE_AML)
+#define AE_AML_UNINITIALIZED_ELEMENT    (acpi_status) (0x0007 | AE_CODE_AML)
-#define AE_AML_UNINITIALIZED_ARG        (acpi_status) (0x0008 | AE_CODE_AML)
+#define AE_AML_NUMERIC_OVERFLOW         (acpi_status) (0x0008 | AE_CODE_AML)
-#define AE_AML_UNINITIALIZED_ELEMENT    (acpi_status) (0x0009 | AE_CODE_AML)
+#define AE_AML_REGION_LIMIT             (acpi_status) (0x0009 | AE_CODE_AML)
-#define AE_AML_NUMERIC_OVERFLOW         (acpi_status) (0x000A | AE_CODE_AML)
+#define AE_AML_BUFFER_LIMIT             (acpi_status) (0x000A | AE_CODE_AML)
-#define AE_AML_REGION_LIMIT             (acpi_status) (0x000B | AE_CODE_AML)
+#define AE_AML_PACKAGE_LIMIT            (acpi_status) (0x000B | AE_CODE_AML)
-#define AE_AML_BUFFER_LIMIT             (acpi_status) (0x000C | AE_CODE_AML)
+#define AE_AML_DIVIDE_BY_ZERO           (acpi_status) (0x000C | AE_CODE_AML)
-#define AE_AML_PACKAGE_LIMIT            (acpi_status) (0x000D | AE_CODE_AML)
+#define AE_AML_BAD_NAME                 (acpi_status) (0x000D | AE_CODE_AML)
-#define AE_AML_DIVIDE_BY_ZERO           (acpi_status) (0x000E | AE_CODE_AML)
+#define AE_AML_NAME_NOT_FOUND           (acpi_status) (0x000E | AE_CODE_AML)
-#define AE_AML_BAD_NAME                 (acpi_status) (0x000F | AE_CODE_AML)
+#define AE_AML_INTERNAL                 (acpi_status) (0x000F | AE_CODE_AML)
-#define AE_AML_NAME_NOT_FOUND           (acpi_status) (0x0010 | AE_CODE_AML)
+#define AE_AML_INVALID_SPACE_ID         (acpi_status) (0x0010 | AE_CODE_AML)
-#define AE_AML_INTERNAL                 (acpi_status) (0x0011 | AE_CODE_AML)
+#define AE_AML_STRING_LIMIT             (acpi_status) (0x0011 | AE_CODE_AML)
-#define AE_AML_INVALID_SPACE_ID         (acpi_status) (0x0012 | AE_CODE_AML)
+#define AE_AML_NO_RETURN_VALUE          (acpi_status) (0x0012 | AE_CODE_AML)
-#define AE_AML_STRING_LIMIT             (acpi_status) (0x0013 | AE_CODE_AML)
+#define AE_AML_METHOD_LIMIT             (acpi_status) (0x0013 | AE_CODE_AML)
-#define AE_AML_NO_RETURN_VALUE          (acpi_status) (0x0014 | AE_CODE_AML)
+#define AE_AML_NOT_OWNER                (acpi_status) (0x0014 | AE_CODE_AML)
-#define AE_AML_METHOD_LIMIT             (acpi_status) (0x0015 | AE_CODE_AML)
+#define AE_AML_MUTEX_ORDER              (acpi_status) (0x0015 | AE_CODE_AML)
-#define AE_AML_NOT_OWNER                (acpi_status) (0x0016 | AE_CODE_AML)
+#define AE_AML_MUTEX_NOT_ACQUIRED       (acpi_status) (0x0016 | AE_CODE_AML)
-#define AE_AML_MUTEX_ORDER              (acpi_status) (0x0017 | AE_CODE_AML)
+#define AE_AML_INVALID_RESOURCE_TYPE    (acpi_status) (0x0017 | AE_CODE_AML)
-#define AE_AML_MUTEX_NOT_ACQUIRED       (acpi_status) (0x0018 | AE_CODE_AML)
+#define AE_AML_INVALID_INDEX            (acpi_status) (0x0018 | AE_CODE_AML)
-#define AE_AML_INVALID_RESOURCE_TYPE    (acpi_status) (0x0019 | AE_CODE_AML)
+#define AE_AML_REGISTER_LIMIT           (acpi_status) (0x0019 | AE_CODE_AML)
-#define AE_AML_INVALID_INDEX            (acpi_status) (0x001A | AE_CODE_AML)
+#define AE_AML_NO_WHILE                 (acpi_status) (0x001A | AE_CODE_AML)
-#define AE_AML_REGISTER_LIMIT           (acpi_status) (0x001B | AE_CODE_AML)
+#define AE_AML_ALIGNMENT                (acpi_status) (0x001B | AE_CODE_AML)
-#define AE_AML_NO_WHILE                 (acpi_status) (0x001C | AE_CODE_AML)
+#define AE_AML_NO_RESOURCE_END_TAG      (acpi_status) (0x001C | AE_CODE_AML)
-#define AE_AML_ALIGNMENT                (acpi_status) (0x001D | AE_CODE_AML)
+#define AE_AML_BAD_RESOURCE_VALUE       (acpi_status) (0x001D | AE_CODE_AML)
-#define AE_AML_NO_RESOURCE_END_TAG      (acpi_status) (0x001E | AE_CODE_AML)
+#define AE_AML_CIRCULAR_REFERENCE       (acpi_status) (0x001E | AE_CODE_AML)
-#define AE_AML_BAD_RESOURCE_VALUE       (acpi_status) (0x001F | AE_CODE_AML)
+#define AE_AML_BAD_RESOURCE_LENGTH      (acpi_status) (0x001F | AE_CODE_AML)
-#define AE_AML_CIRCULAR_REFERENCE       (acpi_status) (0x0020 | AE_CODE_AML)
+#define AE_AML_ILLEGAL_ADDRESS          (acpi_status) (0x0020 | AE_CODE_AML)
-#define AE_AML_BAD_RESOURCE_LENGTH      (acpi_status) (0x0021 | AE_CODE_AML)
-#define AE_AML_ILLEGAL_ADDRESS          (acpi_status) (0x0022 | AE_CODE_AML)
-#define AE_CODE_AML_MAX                 0x0022
+#define AE_CODE_AML_MAX                 0x0020
 /*
 * Internal exceptions used for control
@@ -206,19 +197,15 @@ char const *acpi_gbl_exception_names_env[] = {
        "AE_STACK_OVERFLOW",
        "AE_STACK_UNDERFLOW",
        "AE_NOT_IMPLEMENTED",
-        "AE_VERSION_MISMATCH",
        "AE_SUPPORT",
-        "AE_SHARE",
        "AE_LIMIT",
        "AE_TIME",
-        "AE_UNKNOWN_STATUS",
        "AE_ACQUIRE_DEADLOCK",
        "AE_RELEASE_DEADLOCK",
        "AE_NOT_ACQUIRED",
        "AE_ALREADY_ACQUIRED",
        "AE_NO_HARDWARE_RESPONSE",
        "AE_NO_GLOBAL_LOCK",
-        "AE_LOGICAL_ADDRESS",
        "AE_ABORT_METHOD",
        "AE_SAME_HANDLER",
        "AE_WAKE_ONLY_GPE",
@@ -231,8 +218,6 @@ char const *acpi_gbl_exception_names_pgm[] = {
        "AE_BAD_CHARACTER",
        "AE_BAD_PATHNAME",
        "AE_BAD_DATA",
-        "AE_BAD_ADDRESS",
-        "AE_ALIGNMENT",
        "AE_BAD_HEX_CONSTANT",
        "AE_BAD_OCTAL_CONSTANT",
        "AE_BAD_DECIMAL_CONSTANT",
@@ -245,14 +230,11 @@ char const *acpi_gbl_exception_names_tbl[] = {
        "AE_BAD_HEADER",
        "AE_BAD_CHECKSUM",
        "AE_BAD_VALUE",
-        "AE_TABLE_NOT_SUPPORTED",
        "AE_INVALID_TABLE_LENGTH"
 };
 char const *acpi_gbl_exception_names_aml[] = {
        NULL,
-        "AE_AML_ERROR",
-        "AE_AML_PARSE",
        "AE_AML_BAD_OPCODE",
        "AE_AML_NO_OPERAND",
        "AE_AML_OPERAND_TYPE",
@@ -284,7 +266,7 @@ char const *acpi_gbl_exception_names_aml[] = {
        "AE_AML_BAD_RESOURCE_VALUE",
        "AE_AML_CIRCULAR_REFERENCE",
        "AE_AML_BAD_RESOURCE_LENGTH",
-        "AE_AML_ILLEGAL_ADDRESS"
+        "AE_AML_ILLEGAL_ADDRESS",
 };
 char const *acpi_gbl_exception_names_ctrl[] = {
diff --git a/include/acpi/aclocal.h b/include/acpi/aclocal.h
index b221c8583ddd..ecab527cf78e 100644
--- a/include/acpi/aclocal.h
+++ b/include/acpi/aclocal.h
@@ -208,6 +208,7 @@ struct acpi_namespace_node {
 #define ANOBJ_METHOD_ARG                0x04    /* Node is a method argument */
 #define ANOBJ_METHOD_LOCAL              0x08    /* Node is a method local */
 #define ANOBJ_SUBTREE_HAS_INI           0x10    /* Used to optimize device initialization */
+#define ANOBJ_EVALUATED                 0x20    /* Set on first evaluation of node */
 #define ANOBJ_IS_EXTERNAL               0x08    /* i_aSL only: This object created via External() */
 #define ANOBJ_METHOD_NO_RETVAL          0x10    /* i_aSL only: Method has no return value */
@@ -340,6 +341,82 @@ acpi_status(*ACPI_INTERNAL_METHOD) (struct acpi_walk_state * walk_state);
 #define ACPI_BTYPE_OBJECTS_AND_REFS     0x0001FFFF      /* ARG or LOCAL */
 #define ACPI_BTYPE_ALL_OBJECTS          0x0000FFFF
+/*
+ * Information structure for ACPI predefined names.
+ * Each entry in the table contains the following items:
+ *
+ * Name                 - The ACPI reserved name
+ * param_count          - Number of arguments to the method
+ * expected_return_btypes - Allowed type(s) for the return value
+ */
+struct acpi_name_info {
+        char name[ACPI_NAME_SIZE];
+        u8 param_count;
+        u8 expected_btypes;
+};
+/*
+ * Secondary information structures for ACPI predefined objects that return
+ * package objects. This structure appears as the next entry in the table
+ * after the NAME_INFO structure above.
+ *
+ * The reason for this is to minimize the size of the predefined name table.
+ */
+/*
+ * Used for ACPI_PTYPE1_FIXED, ACPI_PTYPE1_VAR, ACPI_PTYPE2,
+ * ACPI_PTYPE2_MIN, ACPI_PTYPE2_PKG_COUNT, ACPI_PTYPE2_COUNT
+ */
+struct acpi_package_info {
+        u8 type;
+        u8 object_type1;
+        u8 count1;
+        u8 object_type2;
+        u8 count2;
+        u8 reserved;
+};
+/* Used for ACPI_PTYPE2_FIXED */
+struct acpi_package_info2 {
+        u8 type;
+        u8 count;
+        u8 object_type[4];
+};
+/* Used for ACPI_PTYPE1_OPTION */
+struct acpi_package_info3 {
+        u8 type;
+        u8 count;
+        u8 object_type[2];
+        u8 tail_object_type;
+        u8 reserved;
+};
+union acpi_predefined_info {
+        struct acpi_name_info info;
+        struct acpi_package_info ret_info;
+        struct acpi_package_info2 ret_info2;
+        struct acpi_package_info3 ret_info3;
+};
+/*
+ * Bitmapped return value types
+ * Note: the actual data types must be contiguous, a loop in nspredef.c
+ * depends on this.
+ */
+#define ACPI_RTYPE_ANY                  0x00
+#define ACPI_RTYPE_NONE                 0x01
+#define ACPI_RTYPE_INTEGER              0x02
+#define ACPI_RTYPE_STRING               0x04
+#define ACPI_RTYPE_BUFFER               0x08
+#define ACPI_RTYPE_PACKAGE              0x10
+#define ACPI_RTYPE_REFERENCE            0x20
+#define ACPI_RTYPE_ALL                  0x3F
+#define ACPI_NUM_RTYPES                 5       /* Number of actual object types */
 /*****************************************************************************
 *
 * Event typedefs and structs
diff --git a/include/acpi/acmacros.h b/include/acpi/acmacros.h
index 57ab9e9d7593..a1e3240bf460 100644
--- a/include/acpi/acmacros.h
+++ b/include/acpi/acmacros.h
@@ -62,7 +62,7 @@
 #define ACPI_ARRAY_LENGTH(x)            (sizeof(x) / sizeof((x)[0]))
 /*
- * Extract data using a pointer.  Any more than a byte and we
+ * 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.
 */
@@ -80,21 +80,21 @@
 */
 #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_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)))
+#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_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_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)))
+#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))
+#define ACPI_COMPARE_NAME(a, b)         (!ACPI_STRNCMP (ACPI_CAST_PTR (char, (a)), ACPI_CAST_PTR (char, (b)), ACPI_NAME_SIZE))
 #endif
 /*
@@ -114,7 +114,7 @@ struct acpi_integer_overlay {
 /* Split 64-bit integer into two 32-bit values. Use with %8.8_x%8.8_x */
-#define ACPI_FORMAT_UINT64(i)           ACPI_HIDWORD(i),ACPI_LODWORD(i)
+#define ACPI_FORMAT_UINT64(i)           ACPI_HIDWORD(i), ACPI_LODWORD(i)
 #if ACPI_MACHINE_WIDTH == 64
 #define ACPI_FORMAT_NATIVE_UINT(i)      ACPI_FORMAT_UINT64(i)
@@ -132,37 +132,33 @@ struct acpi_integer_overlay {
 * Macros for big-endian machines
 */
-/* This macro sets a buffer index, starting from the end of the buffer */
-#define ACPI_BUFFER_INDEX(buf_len,buf_offset,byte_gran) ((buf_len) - (((buf_offset)+1) * (byte_gran)))
 /* These macros reverse the bytes during the move, converting little-endian to big endian */
                          /* Big Endian      <==        Little Endian */
                          /*  Hi...Lo                     Lo...Hi     */
 /* 16-bit source, 16/32/64 destination */
-#define ACPI_MOVE_16_TO_16(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[1];\
+#define ACPI_MOVE_16_TO_16(d, s)        {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[1];\
                                           ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[0];}
-#define ACPI_MOVE_16_TO_32(d,s)         {(*(u32 *)(void *)(d))=0;\
+#define ACPI_MOVE_16_TO_32(d, s)        {(*(u32 *)(void *)(d))=0;\
                                                           ((u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[1];\
                                                           ((u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[0];}
-#define ACPI_MOVE_16_TO_64(d,s)         {(*(u64 *)(void *)(d))=0;\
+#define ACPI_MOVE_16_TO_64(d, s)        {(*(u64 *)(void *)(d))=0;\
                                                                         ((u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\
                                                                         ((u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];}
 /* 32-bit source, 16/32/64 destination */
-#define ACPI_MOVE_32_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
+#define ACPI_MOVE_32_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)        /* Truncate to 16 */
-#define ACPI_MOVE_32_TO_32(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[3];\
+#define ACPI_MOVE_32_TO_32(d, s)        {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[3];\
                                                                                 ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[2];\
                                                                                 ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[1];\
                                                                                 ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[0];}
-#define ACPI_MOVE_32_TO_64(d,s)         {(*(u64 *)(void *)(d))=0;\
+#define ACPI_MOVE_32_TO_64(d, s)        {(*(u64 *)(void *)(d))=0;\
                                                                                   ((u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[3];\
                                                                                   ((u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[2];\
                                                                                   ((u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\
@@ -170,11 +166,11 @@ struct acpi_integer_overlay {
 /* 64-bit source, 16/32/64 destination */
-#define ACPI_MOVE_64_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
+#define ACPI_MOVE_64_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)        /* Truncate to 16 */
-#define ACPI_MOVE_64_TO_32(d,s)         ACPI_MOVE_32_TO_32(d,s) /* Truncate to 32 */
+#define ACPI_MOVE_64_TO_32(d, s)        ACPI_MOVE_32_TO_32(d, s)        /* Truncate to 32 */
-#define ACPI_MOVE_64_TO_64(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[7];\
+#define ACPI_MOVE_64_TO_64(d, s)        {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[7];\
                                                                                 ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[6];\
                                                                                 ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[5];\
                                                                                 ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[4];\
@@ -187,63 +183,59 @@ struct acpi_integer_overlay {
 * Macros for little-endian machines
 */
-/* This macro sets a buffer index, starting from the beginning of the buffer */
-#define ACPI_BUFFER_INDEX(buf_len,buf_offset,byte_gran) (buf_offset)
 #ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
 /* The hardware supports unaligned transfers, just do the little-endian move */
 /* 16-bit source, 16/32/64 destination */
-#define ACPI_MOVE_16_TO_16(d,s)         *(u16 *)(void *)(d) = *(u16 *)(void *)(s)
+#define ACPI_MOVE_16_TO_16(d, s)        *(u16 *)(void *)(d) = *(u16 *)(void *)(s)
-#define ACPI_MOVE_16_TO_32(d,s)         *(u32 *)(void *)(d) = *(u16 *)(void *)(s)
+#define ACPI_MOVE_16_TO_32(d, s)        *(u32 *)(void *)(d) = *(u16 *)(void *)(s)
-#define ACPI_MOVE_16_TO_64(d,s)         *(u64 *)(void *)(d) = *(u16 *)(void *)(s)
+#define ACPI_MOVE_16_TO_64(d, s)        *(u64 *)(void *)(d) = *(u16 *)(void *)(s)
 /* 32-bit source, 16/32/64 destination */
-#define ACPI_MOVE_32_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
+#define ACPI_MOVE_32_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)        /* Truncate to 16 */
-#define ACPI_MOVE_32_TO_32(d,s)         *(u32 *)(void *)(d) = *(u32 *)(void *)(s)
+#define ACPI_MOVE_32_TO_32(d, s)        *(u32 *)(void *)(d) = *(u32 *)(void *)(s)
-#define ACPI_MOVE_32_TO_64(d,s)         *(u64 *)(void *)(d) = *(u32 *)(void *)(s)
+#define ACPI_MOVE_32_TO_64(d, s)        *(u64 *)(void *)(d) = *(u32 *)(void *)(s)
 /* 64-bit source, 16/32/64 destination */
-#define ACPI_MOVE_64_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
+#define ACPI_MOVE_64_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)        /* Truncate to 16 */
-#define ACPI_MOVE_64_TO_32(d,s)         ACPI_MOVE_32_TO_32(d,s) /* Truncate to 32 */
+#define ACPI_MOVE_64_TO_32(d, s)        ACPI_MOVE_32_TO_32(d, s)        /* Truncate to 32 */
-#define ACPI_MOVE_64_TO_64(d,s)         *(u64 *)(void *)(d) = *(u64 *)(void *)(s)
+#define ACPI_MOVE_64_TO_64(d, s)        *(u64 *)(void *)(d) = *(u64 *)(void *)(s)
 #else
 /*
- * The hardware does not support unaligned transfers.  We must move the
+ * The hardware does not support unaligned transfers. We must move the
- * data one byte at a time.  These macros work whether the source or
+ * data one byte at a time. These macros work whether the source or
 * the destination (or both) is/are unaligned.  (Little-endian move)
 */
 /* 16-bit source, 16/32/64 destination */
-#define ACPI_MOVE_16_TO_16(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
+#define ACPI_MOVE_16_TO_16(d, s)        {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
                                                                                 ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];}
-#define ACPI_MOVE_16_TO_32(d,s)         {(*(u32 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d,s);}
+#define ACPI_MOVE_16_TO_32(d, s)        {(*(u32 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);}
-#define ACPI_MOVE_16_TO_64(d,s)         {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d,s);}
+#define ACPI_MOVE_16_TO_64(d, s)        {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);}
 /* 32-bit source, 16/32/64 destination */
-#define ACPI_MOVE_32_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
+#define ACPI_MOVE_32_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)        /* Truncate to 16 */
-#define ACPI_MOVE_32_TO_32(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
+#define ACPI_MOVE_32_TO_32(d, s)        {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
                                                                                 ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];\
                                                                                 ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[2];\
                                                                                 ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[3];}
-#define ACPI_MOVE_32_TO_64(d,s)         {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_32_TO_32(d,s);}
+#define ACPI_MOVE_32_TO_64(d, s)        {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_32_TO_32(d, s);}
 /* 64-bit source, 16/32/64 destination */
-#define ACPI_MOVE_64_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
+#define ACPI_MOVE_64_TO_16(d, s)        ACPI_MOVE_16_TO_16(d, s)        /* Truncate to 16 */
-#define ACPI_MOVE_64_TO_32(d,s)         ACPI_MOVE_32_TO_32(d,s) /* Truncate to 32 */
+#define ACPI_MOVE_64_TO_32(d, s)        ACPI_MOVE_32_TO_32(d, s)        /* Truncate to 32 */
-#define ACPI_MOVE_64_TO_64(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
+#define ACPI_MOVE_64_TO_64(d, s)        {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
                                                                                 ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];\
                                                                                 ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[2];\
                                                                                 ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[3];\
@@ -257,10 +249,10 @@ struct acpi_integer_overlay {
 /* Macros based on machine integer width */
 #if ACPI_MACHINE_WIDTH == 32
-#define ACPI_MOVE_SIZE_TO_16(d,s)       ACPI_MOVE_32_TO_16(d,s)
+#define ACPI_MOVE_SIZE_TO_16(d, s)       ACPI_MOVE_32_TO_16(d, s)
 #elif ACPI_MACHINE_WIDTH == 64
-#define ACPI_MOVE_SIZE_TO_16(d,s)       ACPI_MOVE_64_TO_16(d,s)
+#define ACPI_MOVE_SIZE_TO_16(d, s)       ACPI_MOVE_64_TO_16(d, s)
 #else
 #error unknown ACPI_MACHINE_WIDTH
@@ -269,29 +261,29 @@ struct acpi_integer_overlay {
 /*
 * Fast power-of-two math macros for non-optimized compilers
 */
-#define _ACPI_DIV(value,power_of2)      ((u32) ((value) >> (power_of2)))
+#define _ACPI_DIV(value, power_of2)      ((u32) ((value) >> (power_of2)))
-#define _ACPI_MUL(value,power_of2)      ((u32) ((value) << (power_of2)))
+#define _ACPI_MUL(value, power_of2)      ((u32) ((value) << (power_of2)))
-#define _ACPI_MOD(value,divisor)        ((u32) ((value) & ((divisor) -1)))
+#define _ACPI_MOD(value, divisor)        ((u32) ((value) & ((divisor) -1)))
-#define ACPI_DIV_2(a)                   _ACPI_DIV(a,1)
+#define ACPI_DIV_2(a)                   _ACPI_DIV(a, 1)
-#define ACPI_MUL_2(a)                   _ACPI_MUL(a,1)
+#define ACPI_MUL_2(a)                   _ACPI_MUL(a, 1)
-#define ACPI_MOD_2(a)                   _ACPI_MOD(a,2)
+#define ACPI_MOD_2(a)                   _ACPI_MOD(a, 2)
-#define ACPI_DIV_4(a)                   _ACPI_DIV(a,2)
+#define ACPI_DIV_4(a)                   _ACPI_DIV(a, 2)
-#define ACPI_MUL_4(a)                   _ACPI_MUL(a,2)
+#define ACPI_MUL_4(a)                   _ACPI_MUL(a, 2)
-#define ACPI_MOD_4(a)                   _ACPI_MOD(a,4)
+#define ACPI_MOD_4(a)                   _ACPI_MOD(a, 4)
-#define ACPI_DIV_8(a)                   _ACPI_DIV(a,3)
+#define ACPI_DIV_8(a)                   _ACPI_DIV(a, 3)
-#define ACPI_MUL_8(a)                   _ACPI_MUL(a,3)
+#define ACPI_MUL_8(a)                   _ACPI_MUL(a, 3)
-#define ACPI_MOD_8(a)                   _ACPI_MOD(a,8)
+#define ACPI_MOD_8(a)                   _ACPI_MOD(a, 8)
-#define ACPI_DIV_16(a)                  _ACPI_DIV(a,4)
+#define ACPI_DIV_16(a)                  _ACPI_DIV(a, 4)
-#define ACPI_MUL_16(a)                  _ACPI_MUL(a,4)
+#define ACPI_MUL_16(a)                  _ACPI_MUL(a, 4)
-#define ACPI_MOD_16(a)                  _ACPI_MOD(a,16)
+#define ACPI_MOD_16(a)                  _ACPI_MOD(a, 16)
-#define ACPI_DIV_32(a)                  _ACPI_DIV(a,5)
+#define ACPI_DIV_32(a)                  _ACPI_DIV(a, 5)
-#define ACPI_MUL_32(a)                  _ACPI_MUL(a,5)
+#define ACPI_MUL_32(a)                  _ACPI_MUL(a, 5)
-#define ACPI_MOD_32(a)                  _ACPI_MOD(a,32)
+#define ACPI_MOD_32(a)                  _ACPI_MOD(a, 32)
 /*
 * Rounding macros (Power of two boundaries only)
@@ -305,13 +297,13 @@ struct acpi_integer_overlay {
 /* Note: sizeof(acpi_size) evaluates to either 4 or 8 (32- vs 64-bit mode) */
-#define ACPI_ROUND_DOWN_TO_32BIT(a)         ACPI_ROUND_DOWN(a,4)
+#define ACPI_ROUND_DOWN_TO_32BIT(a)         ACPI_ROUND_DOWN(a, 4)
-#define ACPI_ROUND_DOWN_TO_64BIT(a)         ACPI_ROUND_DOWN(a,8)
+#define ACPI_ROUND_DOWN_TO_64BIT(a)         ACPI_ROUND_DOWN(a, 8)
-#define ACPI_ROUND_DOWN_TO_NATIVE_WORD(a)   ACPI_ROUND_DOWN(a,sizeof(acpi_size))
+#define ACPI_ROUND_DOWN_TO_NATIVE_WORD(a)   ACPI_ROUND_DOWN(a, sizeof(acpi_size))
-#define ACPI_ROUND_UP_TO_32BIT(a)           ACPI_ROUND_UP(a,4)
+#define ACPI_ROUND_UP_TO_32BIT(a)           ACPI_ROUND_UP(a, 4)
-#define ACPI_ROUND_UP_TO_64BIT(a)           ACPI_ROUND_UP(a,8)
+#define ACPI_ROUND_UP_TO_64BIT(a)           ACPI_ROUND_UP(a, 8)
-#define ACPI_ROUND_UP_TO_NATIVE_WORD(a)     ACPI_ROUND_UP(a,sizeof(acpi_size))
+#define ACPI_ROUND_UP_TO_NATIVE_WORD(a)     ACPI_ROUND_UP(a, sizeof(acpi_size))
 #define ACPI_ROUND_BITS_UP_TO_BYTES(a)      ACPI_DIV_8((a) + 7)
 #define ACPI_ROUND_BITS_DOWN_TO_BYTES(a)    ACPI_DIV_8((a))
@@ -320,9 +312,9 @@ struct acpi_integer_overlay {
 /* Generic (non-power-of-two) rounding */
-#define ACPI_ROUND_UP_TO(value,boundary)    (((value) + ((boundary)-1)) / (boundary))
+#define ACPI_ROUND_UP_TO(value, boundary)   (((value) + ((boundary)-1)) / (boundary))
-#define ACPI_IS_MISALIGNED(value)           (((acpi_size)value) & (sizeof(acpi_size)-1))
+#define ACPI_IS_MISALIGNED(value)           (((acpi_size) value) & (sizeof(acpi_size)-1))
 /*
 * Bitmask creation
@@ -333,8 +325,6 @@ struct acpi_integer_overlay {
 #define ACPI_MASK_BITS_ABOVE(position)      (~((ACPI_INTEGER_MAX) << ((u32) (position))))
 #define ACPI_MASK_BITS_BELOW(position)      ((ACPI_INTEGER_MAX) << ((u32) (position)))
-#define ACPI_IS_OCTAL_DIGIT(d)              (((char)(d) >= '0') && ((char)(d) <= '7'))
 /* Bitfields within ACPI registers */
 #define ACPI_REGISTER_PREPARE_BITS(val, pos, mask)      ((val << pos) & mask)
@@ -342,39 +332,29 @@ struct acpi_integer_overlay {
 #define ACPI_INSERT_BITS(target, mask, source)          target = ((target & (~(mask))) | (source & mask))
-/* Generate a UUID */
-#define ACPI_INIT_UUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
-        (a) & 0xFF, ((a) >> 8) & 0xFF, ((a) >> 16) & 0xFF, ((a) >> 24) & 0xFF, \
-        (b) & 0xFF, ((b) >> 8) & 0xFF, \
-        (c) & 0xFF, ((c) >> 8) & 0xFF, \
-        (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7)
 /*
- * An struct acpi_namespace_node * can appear in some contexts,
+ * An struct acpi_namespace_node can appear in some contexts
- * where a pointer to an union acpi_operand_object    can also
+ * where a pointer to an union acpi_operand_object can also
- * appear.  This macro is used to distinguish them.
+ * appear. This macro is used to distinguish them.
 *
 * The "Descriptor" field is the first field in both structures.
 */
 #define ACPI_GET_DESCRIPTOR_TYPE(d)     (((union acpi_descriptor *)(void *)(d))->common.descriptor_type)
-#define ACPI_SET_DESCRIPTOR_TYPE(d,t)   (((union acpi_descriptor *)(void *)(d))->common.descriptor_type = t)
+#define ACPI_SET_DESCRIPTOR_TYPE(d, t)  (((union acpi_descriptor *)(void *)(d))->common.descriptor_type = t)
 /* Macro to test the object type */
 #define ACPI_GET_OBJECT_TYPE(d)         (((union acpi_operand_object *)(void *)(d))->common.type)
-/* Macro to check the table flags for SINGLE or MULTIPLE tables are allowed */
-#define ACPI_IS_SINGLE_TABLE(x)         (((x) & 0x01) == ACPI_TABLE_SINGLE ? 1 : 0)
 /*
 * Macros for the master AML opcode table
 */
-#if defined(ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT)
+#if defined (ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT)
-#define ACPI_OP(name,Pargs,Iargs,obj_type,class,type,flags)    {name,(u32)(Pargs),(u32)(Iargs),(u32)(flags),obj_type,class,type}
+#define ACPI_OP(name, Pargs, Iargs, obj_type, class, type, flags) \
+        {name, (u32)(Pargs), (u32)(Iargs), (u32)(flags), obj_type, class, type}
 #else
-#define ACPI_OP(name,Pargs,Iargs,obj_type,class,type,flags)    {(u32)(Pargs),(u32)(Iargs),(u32)(flags),obj_type,class,type}
+#define ACPI_OP(name, Pargs, Iargs, obj_type, class, type, flags) \
+        {(u32)(Pargs), (u32)(Iargs), (u32)(flags), obj_type, class, type}
 #endif
 #ifdef ACPI_DISASSEMBLER
@@ -392,18 +372,18 @@ struct acpi_integer_overlay {
 #define ARG_6(x)                        ((u32)(x) << (5 * ARG_TYPE_WIDTH))
 #define ARGI_LIST1(a)                   (ARG_1(a))
-#define ARGI_LIST2(a,b)                 (ARG_1(b)|ARG_2(a))
+#define ARGI_LIST2(a, b)                (ARG_1(b)|ARG_2(a))
-#define ARGI_LIST3(a,b,c)               (ARG_1(c)|ARG_2(b)|ARG_3(a))
+#define ARGI_LIST3(a, b, c)             (ARG_1(c)|ARG_2(b)|ARG_3(a))
-#define ARGI_LIST4(a,b,c,d)             (ARG_1(d)|ARG_2(c)|ARG_3(b)|ARG_4(a))
+#define ARGI_LIST4(a, b, c, d)          (ARG_1(d)|ARG_2(c)|ARG_3(b)|ARG_4(a))
-#define ARGI_LIST5(a,b,c,d,e)           (ARG_1(e)|ARG_2(d)|ARG_3(c)|ARG_4(b)|ARG_5(a))
+#define ARGI_LIST5(a, b, c, d, e)       (ARG_1(e)|ARG_2(d)|ARG_3(c)|ARG_4(b)|ARG_5(a))
-#define ARGI_LIST6(a,b,c,d,e,f)         (ARG_1(f)|ARG_2(e)|ARG_3(d)|ARG_4(c)|ARG_5(b)|ARG_6(a))
+#define ARGI_LIST6(a, b, c, d, e, f)    (ARG_1(f)|ARG_2(e)|ARG_3(d)|ARG_4(c)|ARG_5(b)|ARG_6(a))
 #define ARGP_LIST1(a)                   (ARG_1(a))
-#define ARGP_LIST2(a,b)                 (ARG_1(a)|ARG_2(b))
+#define ARGP_LIST2(a, b)                (ARG_1(a)|ARG_2(b))
-#define ARGP_LIST3(a,b,c)               (ARG_1(a)|ARG_2(b)|ARG_3(c))
+#define ARGP_LIST3(a, b, c)             (ARG_1(a)|ARG_2(b)|ARG_3(c))
-#define ARGP_LIST4(a,b,c,d)             (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d))
+#define ARGP_LIST4(a, b, c, d)          (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d))
-#define ARGP_LIST5(a,b,c,d,e)           (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e))
+#define ARGP_LIST5(a, b, c, d, e)       (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e))
-#define ARGP_LIST6(a,b,c,d,e,f)         (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e)|ARG_6(f))
+#define ARGP_LIST6(a, b, c, d, e, f)    (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e)|ARG_6(f))
 #define GET_CURRENT_ARG_TYPE(list)      (list & ((u32) 0x1F))
 #define INCREMENT_ARG_LIST(list)        (list >>= ((u32) ARG_TYPE_WIDTH))
@@ -434,8 +414,8 @@ struct acpi_integer_overlay {
 #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_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);
+#define ACPI_ERROR_METHOD(s, n, p, e)   acpi_ns_report_method_error (AE_INFO, s, n, p, e);
 #else
@@ -445,8 +425,8 @@ struct acpi_integer_overlay {
 #define ACPI_WARNING(plist)
 #define ACPI_EXCEPTION(plist)
 #define ACPI_ERROR(plist)
-#define ACPI_ERROR_NAMESPACE(s,e)
+#define ACPI_ERROR_NAMESPACE(s, e)
-#define ACPI_ERROR_METHOD(s,n,p,e)
+#define ACPI_ERROR_METHOD(s, n, p, e)
 #endif
 /*
@@ -489,18 +469,18 @@ struct acpi_integer_overlay {
 #define ACPI_FUNCTION_TRACE(a)          ACPI_FUNCTION_NAME(a) \
                          acpi_ut_trace(ACPI_DEBUG_PARAMETERS)
-#define ACPI_FUNCTION_TRACE_PTR(a,b)    ACPI_FUNCTION_NAME(a) \
+#define ACPI_FUNCTION_TRACE_PTR(a, b)   ACPI_FUNCTION_NAME(a) \
-                                           acpi_ut_trace_ptr(ACPI_DEBUG_PARAMETERS,(void *)b)
+                                           acpi_ut_trace_ptr(ACPI_DEBUG_PARAMETERS, (void *)b)
-#define ACPI_FUNCTION_TRACE_U32(a,b)    ACPI_FUNCTION_NAME(a) \
+#define ACPI_FUNCTION_TRACE_U32(a, b)   ACPI_FUNCTION_NAME(a) \
-                                                         acpi_ut_trace_u32(ACPI_DEBUG_PARAMETERS,(u32)b)
+                                                         acpi_ut_trace_u32(ACPI_DEBUG_PARAMETERS, (u32)b)
-#define ACPI_FUNCTION_TRACE_STR(a,b)    ACPI_FUNCTION_NAME(a) \
+#define ACPI_FUNCTION_TRACE_STR(a, b)   ACPI_FUNCTION_NAME(a) \
-                                                                          acpi_ut_trace_str(ACPI_DEBUG_PARAMETERS,(char *)b)
+                                                                          acpi_ut_trace_str(ACPI_DEBUG_PARAMETERS, (char *)b)
 #define ACPI_FUNCTION_ENTRY()           acpi_ut_track_stack_ptr()
 /*
 * Function exit tracing.
- * WARNING: These macros include a return statement.  This is usually considered
+ * WARNING: These macros include a return statement. This is usually considered
 * bad form, but having a separate exit macro is very ugly and difficult to maintain.
 * One of the FUNCTION_TRACE macros above must be used in conjunction with these macros
 * so that "_AcpiFunctionName" is defined.
@@ -596,13 +576,13 @@ struct acpi_integer_overlay {
 /* Stack and buffer dumping */
-#define ACPI_DUMP_STACK_ENTRY(a)        acpi_ex_dump_operand((a),0)
+#define ACPI_DUMP_STACK_ENTRY(a)        acpi_ex_dump_operand((a), 0)
-#define ACPI_DUMP_OPERANDS(a,b,c)       acpi_ex_dump_operands(a,b,c)
+#define ACPI_DUMP_OPERANDS(a, b, c)     acpi_ex_dump_operands(a, b, c)
-#define ACPI_DUMP_ENTRY(a,b)            acpi_ns_dump_entry (a,b)
+#define ACPI_DUMP_ENTRY(a, b)           acpi_ns_dump_entry (a, b)
-#define ACPI_DUMP_PATHNAME(a,b,c,d)     acpi_ns_dump_pathname(a,b,c,d)
+#define ACPI_DUMP_PATHNAME(a, b, c, d)  acpi_ns_dump_pathname(a, b, c, d)
 #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)
+#define ACPI_DUMP_BUFFER(a, b)          acpi_ut_dump_buffer((u8 *) a, b, DB_BYTE_DISPLAY, _COMPONENT)
 /*
 * Master debug print macros
@@ -625,20 +605,20 @@ struct acpi_integer_overlay {
 #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_PTR(a, b)   do { } while(0)
-#define ACPI_FUNCTION_TRACE_U32(a,b)    do { } while(0)
+#define ACPI_FUNCTION_TRACE_U32(a, b)   do { } while(0)
-#define ACPI_FUNCTION_TRACE_STR(a,b)    do { } while(0)
+#define ACPI_FUNCTION_TRACE_STR(a, b)   do { } while(0)
 #define ACPI_FUNCTION_EXIT              do { } while(0)
 #define ACPI_FUNCTION_STATUS_EXIT(s)    do { } while(0)
 #define ACPI_FUNCTION_VALUE_EXIT(s)     do { } while(0)
 #define ACPI_FUNCTION_ENTRY()           do { } while(0)
 #define ACPI_DUMP_STACK_ENTRY(a)        do { } while(0)
-#define ACPI_DUMP_OPERANDS(a,b,c)      do { } while(0)
+#define ACPI_DUMP_OPERANDS(a, b, c)     do { } while(0)
-#define ACPI_DUMP_ENTRY(a,b)            do { } while(0)
+#define ACPI_DUMP_ENTRY(a, b)           do { } while(0)
-#define ACPI_DUMP_TABLES(a,b)           do { } while(0)
+#define ACPI_DUMP_TABLES(a, b)          do { } while(0)
-#define ACPI_DUMP_PATHNAME(a,b,c,d)     do { } while(0)
+#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_DUMP_BUFFER(a, b)          do { } while(0)
 #define ACPI_DEBUG_PRINT(pl)            do { } while(0)
 #define ACPI_DEBUG_PRINT_RAW(pl)        do { } while(0)
@@ -677,15 +657,17 @@ struct acpi_integer_overlay {
 /*
 * Memory allocation tracking (DEBUG ONLY)
 */
+#define ACPI_MEM_PARAMETERS         _COMPONENT, _acpi_module_name, __LINE__
 #ifndef ACPI_DBG_TRACK_ALLOCATIONS
 /* Memory allocation */
 #ifndef ACPI_ALLOCATE
-#define ACPI_ALLOCATE(a)            acpi_ut_allocate((acpi_size)(a),_COMPONENT,_acpi_module_name,__LINE__)
+#define ACPI_ALLOCATE(a)            acpi_ut_allocate((acpi_size)(a), ACPI_MEM_PARAMETERS)
 #endif
 #ifndef ACPI_ALLOCATE_ZEROED
-#define ACPI_ALLOCATE_ZEROED(a)     acpi_ut_allocate_zeroed((acpi_size)(a), _COMPONENT,_acpi_module_name,__LINE__)
+#define ACPI_ALLOCATE_ZEROED(a)     acpi_ut_allocate_zeroed((acpi_size)(a), ACPI_MEM_PARAMETERS)
 #endif
 #ifndef ACPI_FREE
 #define ACPI_FREE(a)                acpio_os_free(a)
@@ -696,11 +678,16 @@ struct acpi_integer_overlay {
 /* Memory allocation */
-#define ACPI_ALLOCATE(a)            acpi_ut_allocate_and_track((acpi_size)(a),_COMPONENT,_acpi_module_name,__LINE__)
+#define ACPI_ALLOCATE(a)            acpi_ut_allocate_and_track((acpi_size)(a), ACPI_MEM_PARAMETERS)
-#define ACPI_ALLOCATE_ZEROED(a)     acpi_ut_allocate_zeroed_and_track((acpi_size)(a), _COMPONENT,_acpi_module_name,__LINE__)
+#define ACPI_ALLOCATE_ZEROED(a)     acpi_ut_allocate_zeroed_and_track((acpi_size)(a), ACPI_MEM_PARAMETERS)
-#define ACPI_FREE(a)                acpi_ut_free_and_track(a,_COMPONENT,_acpi_module_name,__LINE__)
+#define ACPI_FREE(a)                acpi_ut_free_and_track(a, ACPI_MEM_PARAMETERS)
 #define ACPI_MEM_TRACKING(a)        a
 #endif                          /* ACPI_DBG_TRACK_ALLOCATIONS */
+/* Preemption point */
+#ifndef ACPI_PREEMPTION_POINT
+#define ACPI_PREEMPTION_POINT() /* no preemption */
+#endif
 #endif                          /* ACMACROS_H */
diff --git a/include/acpi/acnamesp.h b/include/acpi/acnamesp.h
index c34008507b69..db4e6f677855 100644
--- a/include/acpi/acnamesp.h
+++ b/include/acpi/acnamesp.h
@@ -178,6 +178,22 @@ acpi_ns_dump_objects(acpi_object_type type,
 acpi_status acpi_ns_evaluate(struct acpi_evaluate_info *info);
 /*
+ * nspredef - Support for predefined/reserved names
+ */
+acpi_status
+acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
+                               union acpi_operand_object *return_object);
+const union acpi_predefined_info *acpi_ns_check_for_predefined_name(struct
+                                                                    acpi_namespace_node
+                                                                    *node);
+void
+acpi_ns_check_parameter_count(char *pathname,
+                              struct acpi_namespace_node *node,
+                              const union acpi_predefined_info *info);
+/*
 * nsnames - Name and Scope manipulation
 */
 u32 acpi_ns_opens_scope(acpi_object_type type);
diff --git a/include/acpi/acobject.h b/include/acpi/acobject.h
index e9657dac69b7..eb6f038b03d9 100644
--- a/include/acpi/acobject.h
+++ b/include/acpi/acobject.h
@@ -308,18 +308,34 @@ struct acpi_object_addr_handler {
 *****************************************************************************/
 /*
- * The Reference object type is used for these opcodes:
+ * The Reference object is used for these opcodes:
- * Arg[0-6], Local[0-7], index_op, name_op, zero_op, one_op, ones_op, debug_op
+ * Arg[0-6], Local[0-7], index_op, name_op, ref_of_op, load_op, load_table_op, debug_op
+ * The Reference.Class differentiates these types.
 */
 struct acpi_object_reference {
-        ACPI_OBJECT_COMMON_HEADER u8 target_type;       /* Used for index_op */
+        ACPI_OBJECT_COMMON_HEADER u8 class;     /* Reference Class */
-        u16 opcode;
+        u8 target_type;         /* Used for Index Op */
+        u8 reserved;
        void *object;           /* name_op=>HANDLE to obj, index_op=>union acpi_operand_object */
-        struct acpi_namespace_node *node;
+        struct acpi_namespace_node *node;       /* ref_of or Namepath */
-        union acpi_operand_object **where;
+        union acpi_operand_object **where;      /* Target of Index */
-        u32 offset;             /* Used for arg_op, local_op, and index_op */
+        u32 value;              /* Used for Local/Arg/Index/ddb_handle */
 };
+/* Values for Reference.Class above */
+typedef enum {
+        ACPI_REFCLASS_LOCAL = 0,        /* Method local */
+        ACPI_REFCLASS_ARG = 1,  /* Method argument */
+        ACPI_REFCLASS_REFOF = 2,        /* Result of ref_of() TBD: Split to Ref/Node and Ref/operand_obj? */
+        ACPI_REFCLASS_INDEX = 3,        /* Result of Index() */
+        ACPI_REFCLASS_TABLE = 4,        /* ddb_handle - Load(), load_table() */
+        ACPI_REFCLASS_NAME = 5, /* Reference to a named object */
+        ACPI_REFCLASS_DEBUG = 6,        /* Debug object */
+        ACPI_REFCLASS_MAX = 6
+} ACPI_REFERENCE_CLASSES;
 /*
 * Extra object is used as additional storage for types that
 * have AML code in their declarations (term_args) that must be
@@ -379,6 +395,13 @@ union acpi_operand_object {
        struct acpi_object_extra extra;
        struct acpi_object_data data;
        struct acpi_object_cache_list cache;
+        /*
+         * Add namespace node to union in order to simplify code that accepts both
+         * ACPI_OPERAND_OBJECTs and ACPI_NAMESPACE_NODEs. The structures share
+         * a common descriptor_type field in order to differentiate them.
+         */
+        struct acpi_namespace_node node;
 };
 /******************************************************************************
diff --git a/include/acpi/acoutput.h b/include/acpi/acoutput.h
index e17873defcec..09d33c7740f0 100644
--- a/include/acpi/acoutput.h
+++ b/include/acpi/acoutput.h
@@ -80,12 +80,10 @@
 /*
 * Raw debug output levels, do not use these in the DEBUG_PRINT macros
 */
-#define ACPI_LV_ERROR               0x00000001
+#define ACPI_LV_INIT                0x00000001
-#define ACPI_LV_WARN                0x00000002
+#define ACPI_LV_DEBUG_OBJECT        0x00000002
-#define ACPI_LV_INIT                0x00000004
+#define ACPI_LV_INFO                0x00000004
-#define ACPI_LV_DEBUG_OBJECT        0x00000008
+#define ACPI_LV_ALL_EXCEPTIONS      0x00000007
-#define ACPI_LV_INFO                0x00000010
-#define ACPI_LV_ALL_EXCEPTIONS      0x0000001F
 /* Trace verbosity level 1 [Standard Trace Level] */
@@ -127,7 +125,6 @@
 #define ACPI_LV_VERBOSE_INFO        0x20000000
 #define ACPI_LV_FULL_TABLES         0x40000000
 #define ACPI_LV_EVENTS              0x80000000
 #define ACPI_LV_VERBOSE             0xF0000000
 /*
@@ -135,21 +132,17 @@
 */
 #define ACPI_DEBUG_LEVEL(dl)        (u32) dl,ACPI_DEBUG_PARAMETERS
-/* Exception level -- used in the global "DebugLevel" */
+/*
+ * Exception level -- used in the global "DebugLevel"
+ *
+ * Note: For errors, use the ACPI_ERROR or ACPI_EXCEPTION interfaces.
+ * For warnings, use ACPI_WARNING.
+ */
 #define ACPI_DB_INIT                ACPI_DEBUG_LEVEL (ACPI_LV_INIT)
 #define ACPI_DB_DEBUG_OBJECT        ACPI_DEBUG_LEVEL (ACPI_LV_DEBUG_OBJECT)
 #define ACPI_DB_INFO                ACPI_DEBUG_LEVEL (ACPI_LV_INFO)
 #define ACPI_DB_ALL_EXCEPTIONS      ACPI_DEBUG_LEVEL (ACPI_LV_ALL_EXCEPTIONS)
-/*
- * These two levels are essentially obsolete, all instances in the
- * ACPICA core code have been replaced by ACPI_ERROR and ACPI_WARNING
- * (Kept here because some drivers may still use them)
- */
-#define ACPI_DB_ERROR               ACPI_DEBUG_LEVEL (ACPI_LV_ERROR)
-#define ACPI_DB_WARN                ACPI_DEBUG_LEVEL (ACPI_LV_WARN)
 /* Trace level -- also used in the global "DebugLevel" */
 #define ACPI_DB_INIT_NAMES          ACPI_DEBUG_LEVEL (ACPI_LV_INIT_NAMES)
@@ -173,13 +166,14 @@
 #define ACPI_DB_USER_REQUESTS       ACPI_DEBUG_LEVEL (ACPI_LV_USER_REQUESTS)
 #define ACPI_DB_PACKAGE             ACPI_DEBUG_LEVEL (ACPI_LV_PACKAGE)
 #define ACPI_DB_MUTEX               ACPI_DEBUG_LEVEL (ACPI_LV_MUTEX)
+#define ACPI_DB_EVENTS              ACPI_DEBUG_LEVEL (ACPI_LV_EVENTS)
 #define ACPI_DB_ALL                 ACPI_DEBUG_LEVEL (ACPI_LV_ALL)
 /* Defaults for debug_level, debug and normal */
-#define ACPI_DEBUG_DEFAULT          (ACPI_LV_INIT | ACPI_LV_WARN | ACPI_LV_ERROR)
+#define ACPI_DEBUG_DEFAULT          (ACPI_LV_INIT | ACPI_LV_DEBUG_OBJECT)
-#define ACPI_NORMAL_DEFAULT         (ACPI_LV_INIT | ACPI_LV_WARN | ACPI_LV_ERROR)
+#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)
 #endif                          /* __ACOUTPUT_H__ */
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index a5ac0bc7f52e..c1b5556c985d 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -300,7 +300,11 @@ struct acpi_device {
        enum acpi_bus_removal_type removal_type;        /* indicate for different removal type */
 };
-#define acpi_driver_data(d)     ((d)->driver_data)
+static inline void *acpi_driver_data(struct acpi_device *d)
+{
+        return d->driver_data;
+}
 #define to_acpi_device(d)       container_of(d, struct acpi_device, dev)
 #define to_acpi_driver(d)       container_of(d, struct acpi_driver, drv)
@@ -327,6 +331,9 @@ int acpi_bus_get_private_data(acpi_handle, void **);
 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
 extern int register_acpi_notifier(struct notifier_block *);
 extern int unregister_acpi_notifier(struct notifier_block *);
+extern int register_acpi_bus_notifier(struct notifier_block *nb);
+extern void unregister_acpi_bus_notifier(struct notifier_block *nb);
 /*
 * External Functions
 */
diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h
index e5f38e5ce86f..cf04c6011c2a 100644
--- a/include/acpi/acpi_drivers.h
+++ b/include/acpi/acpi_drivers.h
@@ -93,6 +93,7 @@ int acpi_enable_wakeup_device_power(struct acpi_device *dev, int sleep_state);
 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
 int acpi_power_get_inferred_state(struct acpi_device *device);
 int acpi_power_transition(struct acpi_device *device, int state);
+extern int acpi_power_nocheck;
 #endif
 /* --------------------------------------------------------------------------
@@ -100,6 +101,7 @@ int acpi_power_transition(struct acpi_device *device, int state);
   -------------------------------------------------------------------------- */
 #ifdef CONFIG_ACPI_EC
 int acpi_ec_ecdt_probe(void);
+int acpi_boot_ec_enable(void);
 #endif
 /* --------------------------------------------------------------------------
@@ -115,12 +117,17 @@ int acpi_processor_set_thermal_limit(acpi_handle handle, int type);
 /*--------------------------------------------------------------------------
                                  Dock Station
  -------------------------------------------------------------------------- */
+struct acpi_dock_ops {
+        acpi_notify_handler handler;
+        acpi_notify_handler uevent;
+};
 #if defined(CONFIG_ACPI_DOCK) || defined(CONFIG_ACPI_DOCK_MODULE)
 extern int is_dock_device(acpi_handle handle);
 extern int register_dock_notifier(struct notifier_block *nb);
 extern void unregister_dock_notifier(struct notifier_block *nb);
 extern int register_hotplug_dock_device(acpi_handle handle,
-                                        acpi_notify_handler handler,
+                                        struct acpi_dock_ops *ops,
                                        void *context);
 extern void unregister_hotplug_dock_device(acpi_handle handle);
 #else
@@ -136,7 +143,7 @@ static inline void unregister_dock_notifier(struct notifier_block *nb)
 {
 }
 static inline int register_hotplug_dock_device(acpi_handle handle,
-                                               acpi_notify_handler handler,
+                                               struct acpi_dock_ops *ops,
                                               void *context)
 {
        return -ENODEV;
diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h
index 3f93a6b4e17f..b91440ac0d16 100644
--- a/include/acpi/acpiosxf.h
+++ b/include/acpi/acpiosxf.h
@@ -193,6 +193,9 @@ acpi_status
 acpi_os_execute(acpi_execute_type type,
                acpi_osd_exec_callback function, void *context);
+acpi_status
+acpi_os_hotplug_execute(acpi_osd_exec_callback function, void *context);
 void acpi_os_wait_events_complete(void *context);
 void acpi_os_sleep(acpi_integer milliseconds);
diff --git a/include/acpi/acpredef.h b/include/acpi/acpredef.h
new file mode 100644
index 000000000000..619fb75f8861
--- /dev/null
+++ b/include/acpi/acpredef.h
@@ -0,0 +1,371 @@
+/******************************************************************************
+ *
+ * Name: acpredef - Information table for ACPI predefined methods and objects
+ *              $Revision: 1.1 $
+ *
+ *****************************************************************************/
+/*
+ * 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 __ACPREDEF_H__
+#define __ACPREDEF_H__
+/******************************************************************************
+ *
+ * Return Package types
+ *
+ * 1) PTYPE1 packages do not contain sub-packages.
+ *
+ * ACPI_PTYPE1_FIXED: Fixed length, 1 or 2 object types:
+ *     object type
+ *     count
+ *     object type
+ *     count
+ *
+ * ACPI_PTYPE1_VAR: Variable length:
+ *    object type (Int/Buf/Ref)
+ *
+ * ACPI_PTYPE1_OPTION: Package has some required and some optional elements:
+ *      Used for _PRW
+ *
+ *
+ * 2) PTYPE2 packages contain a variable number of sub-packages. Each of the
+ *    different types describe the contents of each of the sub-packages.
+ *
+ * ACPI_PTYPE2: Each subpackage contains 1 or 2 object types:
+ *     object type
+ *     count
+ *     object type
+ *     count
+ *
+ * ACPI_PTYPE2_COUNT: Each subpackage has a count as first element:
+ *     object type
+ *
+ * ACPI_PTYPE2_PKG_COUNT: Count of subpackages at start, 1 or 2 object types:
+ *     object type
+ *     count
+ *     object type
+ *     count
+ *
+ * ACPI_PTYPE2_FIXED: Each subpackage is of fixed length:
+ *      Used for _PRT
+ *
+ * ACPI_PTYPE2_MIN: Each subpackage has a variable but minimum length
+ *      Used for _HPX
+ *
+ *****************************************************************************/
+enum acpi_return_package_types {
+        ACPI_PTYPE1_FIXED = 1,
+        ACPI_PTYPE1_VAR = 2,
+        ACPI_PTYPE1_OPTION = 3,
+        ACPI_PTYPE2 = 4,
+        ACPI_PTYPE2_COUNT = 5,
+        ACPI_PTYPE2_PKG_COUNT = 6,
+        ACPI_PTYPE2_FIXED = 7,
+        ACPI_PTYPE2_MIN = 8
+};
+/*
+ * Predefined method/object information table.
+ *
+ * These are the names that can actually be evaluated via acpi_evaluate_object.
+ * Not present in this table are the following:
+ *
+ *      1) Predefined/Reserved names that are never evaluated via acpi_evaluate_object:
+ *          _Lxx and _Exx GPE methods
+ *          _Qxx EC methods
+ *          _T_x compiler temporary variables
+ *
+ *      2) Predefined names that never actually exist within the AML code:
+ *          Predefined resource descriptor field names
+ *
+ *      3) Predefined names that are implemented within ACPICA:
+ *          _OSI
+ *
+ *      4) Some predefined names that are not documented within the ACPI spec.
+ *          _WDG, _WED
+ *
+ * The main entries in the table each contain the following items:
+ *
+ * Name                 - The ACPI reserved name
+ * param_count          - Number of arguments to the method
+ * expected_btypes      - Allowed type(s) for the return value.
+ *                        0 means that no return value is expected.
+ *
+ * For methods that return packages, the next entry in the table contains
+ * information about the expected structure of the package. This information
+ * is saved here (rather than in a separate table) in order to minimize the
+ * overall size of the stored data.
+ */
+static const union acpi_predefined_info predefined_names[] = {
+        {.info = {"_AC0", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_AC1", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_AC2", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_AC3", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_AC4", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_AC5", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_AC6", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_AC7", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_AC8", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_AC9", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_ADR", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_AL0", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_AL1", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_AL2", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_AL3", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_AL4", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_AL5", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_AL6", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_AL7", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_AL8", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_AL9", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_ALC", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_ALI", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_ALP", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_ALR", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE2, ACPI_RTYPE_INTEGER, 2, 0, 0, 0}}, /* variable (Pkgs) each 2 (Ints) */
+        {.info = {"_ALT", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_BBN", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_BCL", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 0, 0, 0, 0}},     /* variable (Ints) */
+        {.info = {"_BCM", 1, 0}},
+        {.info = {"_BDN", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_BFS", 1, 0}},
+        {.info = {"_BIF", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER,
+                                          9,
+                                          ACPI_RTYPE_STRING, 4, 0}},    /* fixed (9 Int),(4 Str) */
+        {.info = {"_BLT", 3, 0}},
+        {.info = {"_BMC", 1, 0}},
+        {.info = {"_BMD", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 5, 0, 0, 0}},   /* fixed (5 Int) */
+        {.info = {"_BQC", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_BST", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 4, 0, 0, 0}},   /* fixed (4 Int) */
+        {.info = {"_BTM", 1, ACPI_RTYPE_INTEGER}},
+        {.info = {"_BTP", 1, 0}},
+        {.info = {"_CBA", 0, ACPI_RTYPE_INTEGER}},      /* see PCI firmware spec 3.0 */
+        {.info = {"_CID", 0,
+         ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_PACKAGE}},
+        {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING, 0, 0, 0, 0}},    /* variable (Ints/Strs) */
+        {.info = {"_CRS", 0, ACPI_RTYPE_BUFFER}},
+        {.info = {"_CRT", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_CSD", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE2_COUNT, ACPI_RTYPE_INTEGER, 0, 0, 0, 0}},   /* variable (1 Int(n), n-1 Int) */
+        {.info = {"_CST", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE2_PKG_COUNT,
+                                          ACPI_RTYPE_BUFFER, 1,
+                                          ACPI_RTYPE_INTEGER, 3, 0}},   /* variable (1 Int(n), n Pkg (1 Buf/3 Int) */
+        {.info = {"_DCK", 1, ACPI_RTYPE_INTEGER}},
+        {.info = {"_DCS", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_DDC", 1, ACPI_RTYPE_INTEGER | ACPI_RTYPE_BUFFER}},
+        {.info = {"_DDN", 0, ACPI_RTYPE_STRING}},
+        {.info = {"_DGS", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_DIS", 0, 0}},
+        {.info = {"_DMA", 0, ACPI_RTYPE_BUFFER}},
+        {.info = {"_DOD", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 0, 0, 0, 0}},     /* variable (Ints) */
+        {.info = {"_DOS", 1, 0}},
+        {.info = {"_DSM", 4, ACPI_RTYPE_ALL}},  /* Must return a type, but it can be of any type */
+        {.info = {"_DSS", 1, 0}},
+        {.info = {"_DSW", 3, 0}},
+        {.info = {"_EC_", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_EDL", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_EJ0", 1, 0}},
+        {.info = {"_EJ1", 1, 0}},
+        {.info = {"_EJ2", 1, 0}},
+        {.info = {"_EJ3", 1, 0}},
+        {.info = {"_EJ4", 1, 0}},
+        {.info = {"_EJD", 0, ACPI_RTYPE_STRING}},
+        {.info = {"_FDE", 0, ACPI_RTYPE_BUFFER}},
+        {.info = {"_FDI", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 16, 0, 0, 0}},  /* fixed (16 Int) */
+        {.info = {"_FDM", 1, 0}},
+        {.info = {"_FIX", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 0, 0, 0, 0}},     /* variable (Ints) */
+        {.info = {"_GLK", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_GPD", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_GPE", 0, ACPI_RTYPE_INTEGER}},      /* _GPE method, not _GPE scope */
+        {.info = {"_GSB", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_GTF", 0, ACPI_RTYPE_BUFFER}},
+        {.info = {"_GTM", 0, ACPI_RTYPE_BUFFER}},
+        {.info = {"_GTS", 1, 0}},
+        {.info = {"_HID", 0, ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING}},
+        {.info = {"_HOT", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_HPP", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 4, 0, 0, 0}},   /* fixed (4 Int) */
+        /*
+         * For _HPX, a single package is returned, containing a variable number of sub-packages.
+         * Each sub-package contains a PCI record setting. There are several different type of
+         * record settings, of different lengths, but all elements of all settings are Integers.
+         */
+        {.info = {"_HPX", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE2_MIN, ACPI_RTYPE_INTEGER, 5, 0, 0, 0}},     /* variable (Pkgs) each (var Ints) */
+        {.info = {"_IFT", 0, ACPI_RTYPE_INTEGER}},      /* see IPMI spec */
+        {.info = {"_INI", 0, 0}},
+        {.info = {"_IRC", 0, 0}},
+        {.info = {"_LCK", 1, 0}},
+        {.info = {"_LID", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_MAT", 0, ACPI_RTYPE_BUFFER}},
+        {.info = {"_MLS", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE2, ACPI_RTYPE_STRING, 2, 0, 0, 0}},  /* variable (Pkgs) each (2 Str) */
+        {.info = {"_MSG", 1, 0}},
+        {.info = {"_OFF", 0, 0}},
+        {.info = {"_ON_", 0, 0}},
+        {.info = {"_OS_", 0, ACPI_RTYPE_STRING}},
+        {.info = {"_OSC", 4, ACPI_RTYPE_BUFFER}},
+        {.info = {"_OST", 3, 0}},
+        {.info = {"_PCL", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_PCT", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_FIXED, ACPI_RTYPE_BUFFER, 2, 0, 0, 0}},    /* fixed (2 Buf) */
+        {.info = {"_PDC", 1, 0}},
+        {.info = {"_PIC", 1, 0}},
+        {.info = {"_PLD", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_BUFFER, 0, 0, 0, 0}},      /* variable (Bufs) */
+        {.info = {"_PPC", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_PPE", 0, ACPI_RTYPE_INTEGER}},      /* see dig64 spec */
+        {.info = {"_PR0", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_PR1", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_PR2", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_PRS", 0, ACPI_RTYPE_BUFFER}},
+        /*
+         * For _PRT, many BIOSs reverse the 2nd and 3rd Package elements. This bug is so prevalent that there
+         * is code in the ACPICA Resource Manager to detect this and switch them back. For now, do not allow
+         * and issue a warning. To allow this and eliminate the warning, add the ACPI_RTYPE_REFERENCE
+         * type to the 2nd element (index 1) in the statement below.
+         */
+        {.info = {"_PRT", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE2_FIXED, 4,
+                                          ACPI_RTYPE_INTEGER,
+                                          ACPI_RTYPE_INTEGER,
+                                          ACPI_RTYPE_INTEGER | ACPI_RTYPE_REFERENCE, ACPI_RTYPE_INTEGER}},      /* variable (Pkgs) each (4): Int,Int,Int/Ref,Int */
+        {.info = {"_PRW", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_OPTION, 2,
+                                          ACPI_RTYPE_INTEGER |
+                                          ACPI_RTYPE_PACKAGE,
+                                          ACPI_RTYPE_INTEGER, ACPI_RTYPE_REFERENCE, 0}},        /* variable (Pkgs) each: Pkg/Int,Int,[variable Refs] (Pkg is Ref/Int) */
+        {.info = {"_PS0", 0, 0}},
+        {.info = {"_PS1", 0, 0}},
+        {.info = {"_PS2", 0, 0}},
+        {.info = {"_PS3", 0, 0}},
+        {.info = {"_PSC", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_PSD", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE2_COUNT, ACPI_RTYPE_INTEGER, 0, 0, 0, 0}},   /* variable (Pkgs) each (5 Int) with count */
+        {.info = {"_PSL", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_PSR", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_PSS", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE2, ACPI_RTYPE_INTEGER, 6, 0, 0, 0}}, /* variable (Pkgs) each (6 Int) */
+        {.info = {"_PSV", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_PSW", 1, 0}},
+        {.info = {"_PTC", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_FIXED, ACPI_RTYPE_BUFFER, 2, 0, 0, 0}},    /* fixed (2 Buf) */
+        {.info = {"_PTS", 1, 0}},
+        {.info = {"_PXM", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_REG", 2, 0}},
+        {.info = {"_REV", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_RMV", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_ROM", 2, ACPI_RTYPE_BUFFER}},
+        {.info = {"_RTV", 0, ACPI_RTYPE_INTEGER}},
+        /*
+         * For _S0_ through _S5_, the ACPI spec defines a return Package containing 1 Integer,
+         * but most DSDTs have it wrong - 2,3, or 4 integers. Allow this by making the objects "variable length",
+         * but all elements must be Integers.
+         */
+        {.info = {"_S0_", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1, 0, 0, 0}},     /* fixed (1 Int) */
+        {.info = {"_S1_", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1, 0, 0, 0}},     /* fixed (1 Int) */
+        {.info = {"_S2_", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1, 0, 0, 0}},     /* fixed (1 Int) */
+        {.info = {"_S3_", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1, 0, 0, 0}},     /* fixed (1 Int) */
+        {.info = {"_S4_", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1, 0, 0, 0}},     /* fixed (1 Int) */
+        {.info = {"_S5_", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1, 0, 0, 0}},     /* fixed (1 Int) */
+        {.info = {"_S1D", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_S2D", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_S3D", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_S4D", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_S0W", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_S1W", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_S2W", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_S3W", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_S4W", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_SBS", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_SCP", 0x13, 0}},    /* Acpi 1.0 allowed 1 arg. Acpi 3.0 expanded to 3 args. Allow both. */
+        /* Note: the 3-arg definition may be removed for ACPI 4.0 */
+        {.info = {"_SDD", 1, 0}},
+        {.info = {"_SEG", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_SLI", 0, ACPI_RTYPE_BUFFER}},
+        {.info = {"_SPD", 1, ACPI_RTYPE_INTEGER}},
+        {.info = {"_SRS", 1, 0}},
+        {.info = {"_SRV", 0, ACPI_RTYPE_INTEGER}},      /* see IPMI spec */
+        {.info = {"_SST", 1, 0}},
+        {.info = {"_STA", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_STM", 3, 0}},
+        {.info = {"_STR", 0, ACPI_RTYPE_BUFFER}},
+        {.info = {"_SUN", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_SWS", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_TC1", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_TC2", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_TMP", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_TPC", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_TPT", 1, 0}},
+        {.info = {"_TRT", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE2, ACPI_RTYPE_REFERENCE, 2,
+                                          ACPI_RTYPE_INTEGER, 6, 0}},   /* variable (Pkgs) each 2_ref/6_int */
+        {.info = {"_TSD", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE2_COUNT, ACPI_RTYPE_INTEGER, 5, 0, 0, 0}},   /* variable (Pkgs) each 5_int with count */
+        {.info = {"_TSP", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_TSS", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE2, ACPI_RTYPE_INTEGER, 5, 0, 0, 0}}, /* variable (Pkgs) each 5_int */
+        {.info = {"_TST", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_TTS", 1, 0}},
+        {.info = {"_TZD", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0}},   /* variable (Refs) */
+        {.info = {"_TZM", 0, ACPI_RTYPE_REFERENCE}},
+        {.info = {"_TZP", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_UID", 0, ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING}},
+        {.info = {"_UPC", 0, ACPI_RTYPE_PACKAGE}}, {.ret_info = {ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 4, 0, 0, 0}},   /* fixed (4 Int) */
+        {.info = {"_UPD", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_UPP", 0, ACPI_RTYPE_INTEGER}},
+        {.info = {"_VPO", 0, ACPI_RTYPE_INTEGER}},
+        /* Acpi 1.0 defined _WAK with no return value. Later, it was changed to return a package */
+        {.info = {"_WAK", 1, ACPI_RTYPE_NONE | ACPI_RTYPE_PACKAGE}},
+        {.ret_info = {ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 2, 0, 0, 0}},      /* fixed (2 Int), but is optional */
+        {.ret_info = {0, 0, 0, 0, 0, 0}}        /* Table terminator */
+};
+#if 0
+        /* Not implemented */
+{
+"_WDG", 0, ACPI_RTYPE_BUFFER},  /* MS Extension */
+{
+"_WED", 1, ACPI_RTYPE_PACKAGE}, /* MS Extension */
+    /* This is an internally implemented control method, no need to check */
+{
+"_OSI", 1, ACPI_RTYPE_INTEGER},
+    /* TBD: */
+    _PRT - currently ignore reversed entries.attempt to fix here ?
+    think about code that attempts to fix package elements like _BIF, etc.
+#endif
+#endif
diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index d38f9be2f6ee..63f5b4cf4de1 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -908,7 +908,9 @@ enum acpi_madt_type {
        ACPI_MADT_TYPE_IO_SAPIC = 6,
        ACPI_MADT_TYPE_LOCAL_SAPIC = 7,
        ACPI_MADT_TYPE_INTERRUPT_SOURCE = 8,
-        ACPI_MADT_TYPE_RESERVED = 9     /* 9 and greater are reserved */
+        ACPI_MADT_TYPE_LOCAL_X2APIC = 9,
+        ACPI_MADT_TYPE_LOCAL_X2APIC_NMI = 10,
+        ACPI_MADT_TYPE_RESERVED = 11    /* 11 and greater are reserved */
 };
 /*
@@ -1009,6 +1011,26 @@ struct acpi_madt_interrupt_source {
 #define ACPI_MADT_CPEI_OVERRIDE     (1)
+/* 9: Processor Local X2_APIC (07/2008) */
+struct acpi_madt_local_x2apic {
+        struct acpi_subtable_header header;
+        u16 reserved;           /* Reserved - must be zero */
+        u32 local_apic_id;      /* Processor X2_APIC ID  */
+        u32 lapic_flags;
+        u32 uid;                /* Extended X2_APIC processor ID */
+};
+/* 10: Local X2APIC NMI (07/2008) */
+struct acpi_madt_local_x2apic_nmi {
+        struct acpi_subtable_header header;
+        u16 inti_flags;
+        u32 uid;                /* Processor X2_APIC ID */
+        u8 lint;                /* LINTn to which NMI is connected */
+        u8 reserved[3];
+};
 /*
 * Common flags fields for MADT subtables
 */
@@ -1150,10 +1172,15 @@ struct acpi_table_srat {
 enum acpi_srat_type {
        ACPI_SRAT_TYPE_CPU_AFFINITY = 0,
        ACPI_SRAT_TYPE_MEMORY_AFFINITY = 1,
-        ACPI_SRAT_TYPE_RESERVED = 2
+        ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY = 2,
+        ACPI_SRAT_TYPE_RESERVED = 3     /* 3 and greater are reserved */
 };
-/* SRAT sub-tables */
+/*
+ * SRAT Sub-tables, correspond to Type in struct acpi_subtable_header
+ */
+/* 0: Processor Local APIC/SAPIC Affinity */
 struct acpi_srat_cpu_affinity {
        struct acpi_subtable_header header;
@@ -1165,9 +1192,7 @@ struct acpi_srat_cpu_affinity {
        u32 reserved;           /* Reserved, must be zero */
 };
-/* Flags */
+/* 1: Memory Affinity */
-#define ACPI_SRAT_CPU_ENABLED       (1) /* 00: Use affinity structure */
 struct acpi_srat_mem_affinity {
        struct acpi_subtable_header header;
@@ -1186,6 +1211,20 @@ struct acpi_srat_mem_affinity {
 #define ACPI_SRAT_MEM_HOT_PLUGGABLE (1<<1)      /* 01: Memory region is hot pluggable */
 #define ACPI_SRAT_MEM_NON_VOLATILE  (1<<2)      /* 02: Memory region is non-volatile */
+/* 2: Processor Local X2_APIC Affinity (07/2008) */
+struct acpi_srat_x2apic_cpu_affinity {
+        struct acpi_subtable_header header;
+        u16 reserved;           /* Reserved, must be zero */
+        u32 proximity_domain;
+        u32 apic_id;
+        u32 flags;
+};
+/* Flags for struct acpi_srat_cpu_affinity and struct acpi_srat_x2apic_cpu_affinity */
+#define ACPI_SRAT_CPU_ENABLED       (1) /* 00: Use affinity structure */
 /*******************************************************************************
 *
 * TCPA - Trusted Computing Platform Alliance table
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index 4ea4f40bf894..e8936ab59627 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -607,8 +607,15 @@ typedef u8 acpi_adr_space_type;
 /*
 * bit_register IDs
- * These are bitfields defined within the full ACPI registers
+ *
+ * These values are intended to be used by the hardware interfaces
+ * and are mapped to individual bitfields defined within the ACPI
+ * registers. See the acpi_gbl_bit_register_info global table in utglobal.c
+ * for this mapping.
 */
+/* PM1 Status register */
 #define ACPI_BITREG_TIMER_STATUS                0x00
 #define ACPI_BITREG_BUS_MASTER_STATUS           0x01
 #define ACPI_BITREG_GLOBAL_LOCK_STATUS          0x02
@@ -618,24 +625,29 @@ typedef u8 acpi_adr_space_type;
 #define ACPI_BITREG_WAKE_STATUS                 0x06
 #define ACPI_BITREG_PCIEXP_WAKE_STATUS          0x07
+/* PM1 Enable register */
 #define ACPI_BITREG_TIMER_ENABLE                0x08
 #define ACPI_BITREG_GLOBAL_LOCK_ENABLE          0x09
 #define ACPI_BITREG_POWER_BUTTON_ENABLE         0x0A
 #define ACPI_BITREG_SLEEP_BUTTON_ENABLE         0x0B
 #define ACPI_BITREG_RT_CLOCK_ENABLE             0x0C
-#define ACPI_BITREG_WAKE_ENABLE                 0x0D
+#define ACPI_BITREG_PCIEXP_WAKE_DISABLE         0x0D
-#define ACPI_BITREG_PCIEXP_WAKE_DISABLE         0x0E
+/* PM1 Control register */
+#define ACPI_BITREG_SCI_ENABLE                  0x0E
+#define ACPI_BITREG_BUS_MASTER_RLD              0x0F
+#define ACPI_BITREG_GLOBAL_LOCK_RELEASE         0x10
+#define ACPI_BITREG_SLEEP_TYPE_A                0x11
+#define ACPI_BITREG_SLEEP_TYPE_B                0x12
+#define ACPI_BITREG_SLEEP_ENABLE                0x13
-#define ACPI_BITREG_SCI_ENABLE                  0x0F
+/* PM2 Control register */
-#define ACPI_BITREG_BUS_MASTER_RLD              0x10
-#define ACPI_BITREG_GLOBAL_LOCK_RELEASE         0x11
-#define ACPI_BITREG_SLEEP_TYPE_A                0x12
-#define ACPI_BITREG_SLEEP_TYPE_B                0x13
-#define ACPI_BITREG_SLEEP_ENABLE                0x14
-#define ACPI_BITREG_ARB_DISABLE                 0x15
+#define ACPI_BITREG_ARB_DISABLE                 0x14
-#define ACPI_BITREG_MAX                         0x15
+#define ACPI_BITREG_MAX                         0x14
 #define ACPI_NUM_BITREG                         ACPI_BITREG_MAX + 1
 /*
@@ -859,6 +871,7 @@ struct acpi_obj_info_header {
 struct acpi_device_info {
        ACPI_COMMON_OBJ_INFO;
+        u32 param_count;        /* If a method, required parameter count */
        u32 valid;              /* Indicates which fields below are valid */
        u32 current_status;     /* _STA value */
        acpi_integer address;   /* _ADR value if any */
@@ -1225,8 +1238,8 @@ struct acpi_resource {
 #pragma pack()
-#define ACPI_RS_SIZE_MIN                    12
 #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)
diff --git a/include/acpi/acutils.h b/include/acpi/acutils.h
index 69f8888771ff..d8307b2987e3 100644
--- a/include/acpi/acutils.h
+++ b/include/acpi/acutils.h
@@ -110,7 +110,7 @@ struct acpi_pkg_info {
 /*
 * utglobal - Global data structures and procedures
 */
-void acpi_ut_init_globals(void);
+acpi_status acpi_ut_init_globals(void);
 #if defined(ACPI_DEBUG_OUTPUT) || defined(ACPI_DEBUGGER)
@@ -126,6 +126,8 @@ char *acpi_ut_get_node_name(void *object);
 char *acpi_ut_get_descriptor_name(void *object);
+const char *acpi_ut_get_reference_name(union acpi_operand_object *object);
 char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc);
 char *acpi_ut_get_region_name(u8 space_id);
diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
index 9af464598682..029c8c06c151 100644
--- a/include/acpi/platform/aclinux.h
+++ b/include/acpi/platform/aclinux.h
@@ -53,6 +53,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/ctype.h>
+#include <linux/sched.h>
 #include <asm/system.h>
 #include <asm/atomic.h>
 #include <asm/div64.h>
@@ -137,4 +138,9 @@ static inline void *acpi_os_acquire_object(acpi_cache_t * cache)
 #define ACPI_ALLOCATE_ZEROED(a) acpi_os_allocate_zeroed(a)
 #define ACPI_FREE(a)            kfree(a)
+/*
+ * We need to show where it is safe to preempt execution of ACPICA
+ */
+#define ACPI_PREEMPTION_POINT() cond_resched()
 #endif                          /* __ACLINUX_H__ */
diff --git a/include/asm-x86/idle.h b/include/asm-x86/idle.h
index cbb649123612..54ce018d4b6c 100644
--- a/include/asm-x86/idle.h
+++ b/include/asm-x86/idle.h
@@ -6,6 +6,7 @@
 struct notifier_block;
 void idle_notifier_register(struct notifier_block *n);
+void idle_notifier_unregister(struct notifier_block *n);
 void enter_idle(void);
 void exit_idle(void);
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 2651f805ba6d..0b19848e380e 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -190,6 +190,30 @@ extern int kernel_text_address(unsigned long addr);
 struct pid;
 extern struct pid *session_of_pgrp(struct pid *pgrp);
+/*
+ * FW_BUG
+ * Add this to a message where you are sure the firmware is buggy or behaves
+ * really stupid or out of spec. Be aware that the responsible BIOS developer
+ * should be able to fix this issue or at least get a concrete idea of the
+ * problem by reading your message without the need of looking at the kernel
+ * code.
+ * 
+ * Use it for definite and high priority BIOS bugs.
+ *
+ * FW_WARN
+ * Use it for not that clear (e.g. could the kernel messed up things already?)
+ * and medium priority BIOS bugs.
+ *
+ * FW_INFO
+ * Use this one if you want to tell the user or vendor about something
+ * suspicious, but generally harmless related to the firmware.
+ *
+ * Use it for information or very low priority BIOS bugs.
+ */
+#define FW_BUG          "[Firmware Bug]: "
+#define FW_WARN         "[Firmware Warn]: "
+#define FW_INFO         "[Firmware Info]: "
 #ifdef CONFIG_PRINTK
 asmlinkage int vprintk(const char *fmt, va_list args)
        __attribute__ ((format (printf, 1, 0)));
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index f1624b396754..efb786d11f2a 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2422,6 +2422,7 @@
 #define PCI_DEVICE_ID_INTEL_MCH_PC1     0x359a
 #define PCI_DEVICE_ID_INTEL_E7525_MCH   0x359e
 #define PCI_DEVICE_ID_INTEL_IOAT_CNB    0x360b
+#define PCI_DEVICE_ID_INTEL_FBD_CNB     0x360c
 #define PCI_DEVICE_ID_INTEL_ICH10_0     0x3a14
 #define PCI_DEVICE_ID_INTEL_ICH10_1     0x3a16
 #define PCI_DEVICE_ID_INTEL_ICH10_2     0x3a18