429 files changed, 12890 insertions, 4343 deletions

diff --git a/Documentation/ABI/stable/sysfs-class-backlight b/Documentation/ABI/stable/sysfs-class-backlight
index 4d637e1c4ff7..70302f370e7e 100644
--- a/Documentation/ABI/stable/sysfs-class-backlight
+++ b/Documentation/ABI/stable/sysfs-class-backlight
@@ -34,3 +34,23 @@ Contact:	Richard Purdie <rpurdie@rpsys.net>
 Description:
                 Maximum brightness for <backlight>.
 Users:          HAL
+
+What:           /sys/class/backlight/<backlight>/type
+Date:           September 2010
+KernelVersion:  2.6.37
+Contact:        Matthew Garrett <mjg@redhat.com>
+Description:
+                The type of interface controlled by <backlight>.
+                "firmware": The driver uses a standard firmware interface
+                "platform": The driver uses a platform-specific interface
+                "raw": The driver controls hardware registers directly
+
+                In the general case, when multiple backlight
+                interfaces are available for a single device, firmware
+                control should be preferred to platform control should
+                be preferred to raw control. Using a firmware
+                interface reduces the probability of confusion with
+                the hardware and the OS independently updating the
+                backlight state. Platform interfaces are mostly a
+                holdover from pre-standardisation of firmware
+                interfaces.
diff --git a/Documentation/ABI/testing/configfs-spear-pcie-gadget b/Documentation/ABI/testing/configfs-spear-pcie-gadget
new file mode 100644
index 000000000000..875988146a63
--- /dev/null
+++ b/Documentation/ABI/testing/configfs-spear-pcie-gadget
@@ -0,0 +1,31 @@
+What:           /config/pcie-gadget
+Date:           Feb 2011
+KernelVersion:  2.6.37
+Contact:        Pratyush Anand <pratyush.anand@st.com>
+Description:
+
+        Interface is used to configure selected dual mode PCIe controller
+        as device and then program its various registers to configure it
+        as a particular device type.
+        This interfaces can be used to show spear's PCIe device capability.
+
+        Nodes are only visible when configfs is mounted. To mount configfs
+        in /config directory use:
+        # mount -t configfs none /config/
+
+        For nth PCIe Device Controller
+        /config/pcie-gadget.n/
+                link ... used to enable ltssm and read its status.
+                int_type ...used to configure and read type of supported
+                        interrupt
+                no_of_msi ... used to configure number of MSI vector needed and
+                        to read no of MSI granted.
+                inta ... write 1 to assert INTA and 0 to de-assert.
+                send_msi ... write MSI vector to be sent.
+                vendor_id ... used to write and read vendor id (hex)
+                device_id ... used to write and read device id (hex)
+                bar0_size ... used to write and read bar0_size
+                bar0_address ... used to write and read bar0 mapped area in hex.
+                bar0_rw_offset ... used to write and read offset of bar0 where
+                        bar0_data will be written or read.
+                bar0_data ... used to write and read data at bar0_rw_offset.
diff --git a/Documentation/ABI/testing/sysfs-bus-rbd b/Documentation/ABI/testing/sysfs-bus-rbd
index 90a87e2a572b..fa72ccb2282e 100644
--- a/Documentation/ABI/testing/sysfs-bus-rbd
+++ b/Documentation/ABI/testing/sysfs-bus-rbd
@@ -1,6 +1,6 @@
 What:           /sys/bus/rbd/
 Date:           November 2010
-Contact:        Yehuda Sadeh <yehuda@hq.newdream.net>,
+Contact:        Yehuda Sadeh <yehuda@newdream.net>,
                 Sage Weil <sage@newdream.net>
 Description:
 
diff --git a/Documentation/Changes b/Documentation/Changes
index 4fb88f15f2ef..5f4828a034e3 100644
--- a/Documentation/Changes
+++ b/Documentation/Changes
@@ -35,7 +35,7 @@ o  util-linux             2.10o                   # fdformat --version
 o  module-init-tools      0.9.10                  # depmod -V
 o  e2fsprogs              1.41.4                  # e2fsck -V
 o  jfsutils               1.1.3                   # fsck.jfs -V
-o  reiserfsprogs          3.6.3                   # reiserfsck -V 2>&1|grep reiserfsprogs
+o  reiserfsprogs          3.6.3                   # reiserfsck -V
 o  xfsprogs               2.6.0                   # xfs_db -V
 o  squashfs-tools         4.0                     # mksquashfs -version
 o  btrfs-progs            0.18                    # btrfsck
@@ -46,9 +46,9 @@ o  isdn4k-utils           3.1pre1                 # isdnctrl 2>&1|grep version
 o  nfs-utils              1.0.5                   # showmount --version
 o  procps                 3.2.0                   # ps --version
 o  oprofile               0.9                     # oprofiled --version
-o  udev                   081                     # udevinfo -V
-o  grub                   0.93                    # grub --version
-o  mcelog                 0.6
+o  udev                   081                     # udevd --version
+o  grub                   0.93                    # grub --version || grub-install --version
+o  mcelog                 0.6                     # mcelog --version
 o  iptables               1.4.2                   # iptables -V
 
 
diff --git a/Documentation/CodingStyle b/Documentation/CodingStyle
index 1cd3478e5834..58b0bf917834 100644
--- a/Documentation/CodingStyle
+++ b/Documentation/CodingStyle
@@ -168,6 +168,13 @@ Do not unnecessarily use braces where a single statement will do.
 if (condition)
         action();
 
+and
+
+if (condition)
+        do_this();
+else
+        do_that();
+
 This does not apply if one branch of a conditional statement is a single
 statement. Use braces in both branches.
 
diff --git a/Documentation/filesystems/adfs.txt b/Documentation/filesystems/adfs.txt
index 9e8811f92b84..5949766353f7 100644
--- a/Documentation/filesystems/adfs.txt
+++ b/Documentation/filesystems/adfs.txt
@@ -9,6 +9,9 @@ Mount options for ADFS
                 will be nnn.  Default 0700.
   othmask=nnn   The permission mask for ADFS 'other' permissions
                 will be nnn.  Default 0077.
+  ftsuffix=n    When ftsuffix=0, no file type suffix will be applied.
+                When ftsuffix=1, a hexadecimal suffix corresponding to
+                the RISC OS file type will be added.  Default 0.
 
 Mapping of ADFS permissions to Linux permissions
 ------------------------------------------------
@@ -55,3 +58,18 @@ Mapping of ADFS permissions to Linux permissions
 
   You can therefore tailor the permission translation to whatever you
   desire the permissions should be under Linux.
+
+RISC OS file type suffix
+------------------------
+
+  RISC OS file types are stored in bits 19..8 of the file load address.
+
+  To enable non-RISC OS systems to be used to store files without losing
+  file type information, a file naming convention was devised (initially
+  for use with NFS) such that a hexadecimal suffix of the form ,xyz
+  denoted the file type: e.g. BasicFile,ffb is a BASIC (0xffb) file.  This
+  naming convention is now also used by RISC OS emulators such as RPCEmu.
+
+  Mounting an ADFS disc with option ftsuffix=1 will cause appropriate file
+  type suffixes to be appended to file names read from a directory.  If the
+  ftsuffix option is zero or omitted, no file type suffixes will be added.
diff --git a/Documentation/i2c/busses/i2c-diolan-u2c b/Documentation/i2c/busses/i2c-diolan-u2c
new file mode 100644
index 000000000000..30fe4bb9a069
--- /dev/null
+++ b/Documentation/i2c/busses/i2c-diolan-u2c
@@ -0,0 +1,26 @@
+Kernel driver i2c-diolan-u2c
+
+Supported adapters:
+  * Diolan U2C-12 I2C-USB adapter
+    Documentation:
+        http://www.diolan.com/i2c/u2c12.html
+
+Author: Guenter Roeck <guenter.roeck@ericsson.com>
+
+Description
+-----------
+
+This is the driver for the Diolan U2C-12 USB-I2C adapter.
+
+The Diolan U2C-12 I2C-USB Adapter provides a low cost solution to connect
+a computer to I2C slave devices using a USB interface. It also supports
+connectivity to SPI devices.
+
+This driver only supports the I2C interface of U2C-12. The driver does not use
+interrupts.
+
+
+Module parameters
+-----------------
+
+* frequency: I2C bus frequency
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index d18a9e12152a..c357a31411cd 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -872,6 +872,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                                If specified, z/VM IUCV HVC accepts connections
                                from listed z/VM user IDs only.
 
+        keep_bootcon    [KNL]
+                        Do not unregister boot console at start. This is only
+                        useful for debugging when something happens in the window
+                        between unregistering the boot console and initializing
+                        the real console.
+
         i2c_bus=        [HW] Override the default board specific I2C bus speed
                              or register an additional I2C bus that is not
                              registered from board initialization code.
@@ -1597,11 +1603,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                         Format: [state][,regs][,debounce][,die]
 
         nmi_watchdog=   [KNL,BUGS=X86] Debugging features for SMP kernels
-                        Format: [panic,][num]
+                        Format: [panic,][nopanic,][num]
                         Valid num: 0
                         0 - turn nmi_watchdog off
                         When panic is specified, panic when an NMI watchdog
-                        timeout occurs.
+                        timeout occurs (or 'nopanic' to override the opposite
+                        default).
                         This is useful when you use a panic=... timeout and
                         need the box quickly up again.
 
@@ -1825,6 +1832,11 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                                 perfmon on Intel CPUs instead of the
                                 CPU specific event set.
 
+        oops=panic      Always panic on oopses. Default is to just kill the process,
+                        but there is a small probability of deadlocking the machine.
+                        This will also cause panics on machine check exceptions.
+                        Useful together with panic=30 to trigger a reboot.
+
         OSS             [HW,OSS]
                         See Documentation/sound/oss/oss-parameters.txt
 
diff --git a/Documentation/misc-devices/spear-pcie-gadget.txt b/Documentation/misc-devices/spear-pcie-gadget.txt
new file mode 100644
index 000000000000..02c13ef5e908
--- /dev/null
+++ b/Documentation/misc-devices/spear-pcie-gadget.txt
@@ -0,0 +1,130 @@
+Spear PCIe Gadget Driver:
+
+Author
+=============
+Pratyush Anand (pratyush.anand@st.com)
+
+Location
+============
+driver/misc/spear13xx_pcie_gadget.c
+
+Supported Chip:
+===================
+SPEAr1300
+SPEAr1310
+
+Menuconfig option:
+==========================
+Device Drivers
+        Misc devices
+                PCIe gadget support for SPEAr13XX platform
+purpose
+===========
+This driver has several nodes which can be read/written by configfs interface.
+Its main purpose is to configure selected dual mode PCIe controller as device
+and then program its various registers to configure it as a particular device
+type. This driver can be used to show spear's PCIe device capability.
+
+Description of different nodes:
+=================================
+
+read behavior of nodes:
+------------------------------
+link            :gives ltssm status.
+int_type        :type of supported interrupt
+no_of_msi       :zero if MSI is not enabled by host. A positive value is the
+                number of MSI vector granted.
+vendor_id       :returns programmed vendor id (hex)
+device_id       :returns programmed device id(hex)
+bar0_size:      :returns size of bar0 in hex.
+bar0_address    :returns address of bar0 mapped area in hex.
+bar0_rw_offset  :returns offset of bar0 for which bar0_data will return value.
+bar0_data       :returns data at bar0_rw_offset.
+
+write behavior of nodes:
+------------------------------
+link            :write UP to enable ltsmm DOWN to disable
+int_type        :write interrupt type to be configured and (int_type could be
+                INTA, MSI or NO_INT). Select MSI only when you have programmed
+                no_of_msi node.
+no_of_msi       :number of MSI vector needed.
+inta            :write 1 to assert INTA and 0 to de-assert.
+send_msi        :write MSI vector to be sent.
+vendor_id       :write vendor id(hex) to be programmed.
+device_id       :write device id(hex) to be programmed.
+bar0_size       :write size of bar0 in hex. default bar0 size is 1000 (hex)
+                bytes.
+bar0_address    :write  address of bar0 mapped area in hex. (default mapping of
+                bar0 is SYSRAM1(E0800000). Always program bar size before bar
+                address. Kernel might modify bar size and address for alignment, so
+                read back bar size and address after writing to cross check.
+bar0_rw_offset  :write offset of bar0 for which bar0_data will write value.
+bar0_data       :write data to be written at bar0_rw_offset.
+
+Node programming example
+===========================
+Program all PCIe registers in such a way that when this device is connected
+to the PCIe host, then host sees this device as 1MB RAM.
+#mount -t configfs none /Config
+For nth PCIe Device Controller
+# cd /config/pcie_gadget.n/
+Now you have all the nodes in this directory.
+program vendor id as 0x104a
+# echo 104A >> vendor_id
+
+program device id as 0xCD80
+# echo CD80 >> device_id
+
+program BAR0 size as 1MB
+# echo 100000 >> bar0_size
+
+check for programmed bar0 size
+# cat bar0_size
+
+Program BAR0 Address as DDR (0x2100000). This is the physical address of
+memory, which is to be made visible to PCIe host. Similarly any other peripheral
+can also be made visible to PCIe host. E.g., if you program base address of UART
+as BAR0 address then when this device will be connected to a host, it will be
+visible as UART.
+# echo 2100000 >> bar0_address
+
+program interrupt type : INTA
+# echo INTA >> int_type
+
+go for link up now.
+# echo UP >> link
+
+It will have to be insured that, once link up is done on gadget, then only host
+is initialized and start to search PCIe devices on its port.
+
+/*wait till link is up*/
+# cat link
+wait till it returns UP.
+
+To assert INTA
+# echo 1 >> inta
+
+To de-assert INTA
+# echo 0 >> inta
+
+if MSI is to be used as interrupt, program no of msi vector needed (say4)
+# echo 4 >> no_of_msi
+
+select MSI as interrupt type
+# echo MSI >> int_type
+
+go for link up now
+# echo UP >> link
+
+wait till link is up
+# cat link
+An application can repetitively read this node till link is found UP. It can
+sleep between two read.
+
+wait till msi is enabled
+# cat no_of_msi
+Should return 4 (number of requested MSI vector)
+
+to send msi vector 2
+# echo 2 >> send_msi
+#cd -
diff --git a/Documentation/vm/page-types.c b/Documentation/vm/page-types.c
index cc96ee2666f2..7445caa26d05 100644
--- a/Documentation/vm/page-types.c
+++ b/Documentation/vm/page-types.c
@@ -32,8 +32,20 @@
 #include <sys/types.h>
 #include <sys/errno.h>
 #include <sys/fcntl.h>
+#include <sys/mount.h>
+#include <sys/statfs.h>
+#include "../../include/linux/magic.h"
 
 
+#ifndef MAX_PATH
+# define MAX_PATH 256
+#endif
+
+#ifndef STR
+# define _STR(x) #x
+# define STR(x) _STR(x)
+#endif
+
 /*
  * pagemap kernel ABI bits
  */
@@ -152,6 +164,12 @@ static const char *page_flag_names[] = {
 };
 
 
+static const char *debugfs_known_mountpoints[] = {
+        "/sys/kernel/debug",
+        "/debug",
+        0,
+};
+
 /*
  * data structures
  */
@@ -184,7 +202,7 @@ static int		kpageflags_fd;
 static int              opt_hwpoison;
 static int              opt_unpoison;
 
-static const char       hwpoison_debug_fs[] = "/debug/hwpoison";
+static char             hwpoison_debug_fs[MAX_PATH+1];
 static int              hwpoison_inject_fd;
 static int              hwpoison_forget_fd;
 
@@ -464,21 +482,100 @@ static uint64_t kpageflags_flags(uint64_t flags)
         return flags;
 }
 
+/* verify that a mountpoint is actually a debugfs instance */
+static int debugfs_valid_mountpoint(const char *debugfs)
+{
+        struct statfs st_fs;
+
+        if (statfs(debugfs, &st_fs) < 0)
+                return -ENOENT;
+        else if (st_fs.f_type != (long) DEBUGFS_MAGIC)
+                return -ENOENT;
+
+        return 0;
+}
+
+/* find the path to the mounted debugfs */
+static const char *debugfs_find_mountpoint(void)
+{
+        const char **ptr;
+        char type[100];
+        FILE *fp;
+
+        ptr = debugfs_known_mountpoints;
+        while (*ptr) {
+                if (debugfs_valid_mountpoint(*ptr) == 0) {
+                        strcpy(hwpoison_debug_fs, *ptr);
+                        return hwpoison_debug_fs;
+                }
+                ptr++;
+        }
+
+        /* give up and parse /proc/mounts */
+        fp = fopen("/proc/mounts", "r");
+        if (fp == NULL)
+                perror("Can't open /proc/mounts for read");
+
+        while (fscanf(fp, "%*s %"
+                      STR(MAX_PATH)
+                      "s %99s %*s %*d %*d\n",
+                      hwpoison_debug_fs, type) == 2) {
+                if (strcmp(type, "debugfs") == 0)
+                        break;
+        }
+        fclose(fp);
+
+        if (strcmp(type, "debugfs") != 0)
+                return NULL;
+
+        return hwpoison_debug_fs;
+}
+
+/* mount the debugfs somewhere if it's not mounted */
+
+static void debugfs_mount(void)
+{
+        const char **ptr;
+
+        /* see if it's already mounted */
+        if (debugfs_find_mountpoint())
+                return;
+
+        ptr = debugfs_known_mountpoints;
+        while (*ptr) {
+                if (mount(NULL, *ptr, "debugfs", 0, NULL) == 0) {
+                        /* save the mountpoint */
+                        strcpy(hwpoison_debug_fs, *ptr);
+                        break;
+                }
+                ptr++;
+        }
+
+        if (*ptr == NULL) {
+                perror("mount debugfs");
+                exit(EXIT_FAILURE);
+        }
+}
+
 /*
  * page actions
  */
 
 static void prepare_hwpoison_fd(void)
 {
-        char buf[100];
+        char buf[MAX_PATH + 1];
+
+        debugfs_mount();
 
         if (opt_hwpoison && !hwpoison_inject_fd) {
-                sprintf(buf, "%s/corrupt-pfn", hwpoison_debug_fs);
+                snprintf(buf, MAX_PATH, "%s/hwpoison/corrupt-pfn",
+                        hwpoison_debug_fs);
                 hwpoison_inject_fd = checked_open(buf, O_WRONLY);
         }
 
         if (opt_unpoison && !hwpoison_forget_fd) {
-                sprintf(buf, "%s/unpoison-pfn", hwpoison_debug_fs);
+                snprintf(buf, MAX_PATH, "%s/hwpoison/unpoison-pfn",
+                        hwpoison_debug_fs);
                 hwpoison_forget_fd = checked_open(buf, O_WRONLY);
         }
 }
diff --git a/Documentation/x86/x86_64/boot-options.txt b/Documentation/x86/x86_64/boot-options.txt
index 48c13b8ab90c..092e596a1301 100644
--- a/Documentation/x86/x86_64/boot-options.txt
+++ b/Documentation/x86/x86_64/boot-options.txt
@@ -293,11 +293,6 @@ IOMMU (input/output memory management unit)
 
 Debugging
 
-  oops=panic    Always panic on oopses. Default is to just kill the process,
-                but there is a small probability of deadlocking the machine.
-                This will also cause panics on machine check exceptions.
-                Useful together with panic=30 to trigger a reboot.
-
   kstack=N      Print N words from the kernel stack in oops dumps.
 
   pagefaulttrace  Dump all page faults. Only useful for extreme debugging
diff --git a/MAINTAINERS b/MAINTAINERS
index 38077a656820..e11953dc8fa3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -72,7 +72,7 @@ Descriptions of section entries:
         L: Mailing list that is relevant to this area
         W: Web-page with status/info
         Q: Patchwork web based patch tracking system site
-        T: SCM tree type and location.  Type is one of: git, hg, quilt, stgit.
+        T: SCM tree type and location.  Type is one of: git, hg, quilt, stgit, topgit.
         S: Status, one of the following:
            Supported:   Someone is actually paid to look after this.
            Maintained:  Someone actually looks after it.
@@ -288,35 +288,35 @@ F:	sound/pci/ad1889.*
 AD525X ANALOG DEVICES DIGITAL POTENTIOMETERS DRIVER
 M:      Michael Hennerich <michael.hennerich@analog.com>
 L:      device-driver-devel@blackfin.uclinux.org
-W:      http://wiki-analog.com/AD5254
+W:      http://wiki.analog.com/AD5254
 S:      Supported
 F:      drivers/misc/ad525x_dpot.c
 
 AD5398 CURRENT REGULATOR DRIVER (AD5398/AD5821)
 M:      Michael Hennerich <michael.hennerich@analog.com>
 L:      device-driver-devel@blackfin.uclinux.org
-W:      http://wiki-analog.com/AD5398
+W:      http://wiki.analog.com/AD5398
 S:      Supported
 F:      drivers/regulator/ad5398.c
 
 AD714X CAPACITANCE TOUCH SENSOR DRIVER (AD7142/3/7/8/7A)
 M:      Michael Hennerich <michael.hennerich@analog.com>
 L:      device-driver-devel@blackfin.uclinux.org
-W:      http://wiki-analog.com/AD7142
+W:      http://wiki.analog.com/AD7142
 S:      Supported
 F:      drivers/input/misc/ad714x.c
 
 AD7877 TOUCHSCREEN DRIVER
 M:      Michael Hennerich <michael.hennerich@analog.com>
 L:      device-driver-devel@blackfin.uclinux.org
-W:      http://wiki-analog.com/AD7877
+W:      http://wiki.analog.com/AD7877
 S:      Supported
 F:      drivers/input/touchscreen/ad7877.c
 
 AD7879 TOUCHSCREEN DRIVER (AD7879/AD7889)
 M:      Michael Hennerich <michael.hennerich@analog.com>
 L:      device-driver-devel@blackfin.uclinux.org
-W:      http://wiki-analog.com/AD7879
+W:      http://wiki.analog.com/AD7879
 S:      Supported
 F:      drivers/input/touchscreen/ad7879.c
 
@@ -342,18 +342,18 @@ F:	drivers/net/wireless/adm8211.*
 ADP5520 BACKLIGHT DRIVER WITH IO EXPANDER (ADP5520/ADP5501)
 M:      Michael Hennerich <michael.hennerich@analog.com>
 L:      device-driver-devel@blackfin.uclinux.org
-W:      http://wiki-analog.com/ADP5520
+W:      http://wiki.analog.com/ADP5520
 S:      Supported
 F:      drivers/mfd/adp5520.c
 F:      drivers/video/backlight/adp5520_bl.c
-F:      drivers/led/leds-adp5520.c
+F:      drivers/leds/leds-adp5520.c
 F:      drivers/gpio/adp5520-gpio.c
 F:      drivers/input/keyboard/adp5520-keys.c
 
 ADP5588 QWERTY KEYPAD AND IO EXPANDER DRIVER (ADP5588/ADP5587)
 M:      Michael Hennerich <michael.hennerich@analog.com>
 L:      device-driver-devel@blackfin.uclinux.org
-W:      http://wiki-analog.com/ADP5588
+W:      http://wiki.analog.com/ADP5588
 S:      Supported
 F:      drivers/input/keyboard/adp5588-keys.c
 F:      drivers/gpio/adp5588-gpio.c
@@ -361,7 +361,7 @@ F:	drivers/gpio/adp5588-gpio.c
 ADP8860 BACKLIGHT DRIVER (ADP8860/ADP8861/ADP8863)
 M:      Michael Hennerich <michael.hennerich@analog.com>
 L:      device-driver-devel@blackfin.uclinux.org
-W:      http://wiki-analog.com/ADP8860
+W:      http://wiki.analog.com/ADP8860
 S:      Supported
 F:      drivers/video/backlight/adp8860_bl.c
 
@@ -388,7 +388,7 @@ F:	drivers/hwmon/adt7475.c
 ADXL34X THREE-AXIS DIGITAL ACCELEROMETER DRIVER (ADXL345/ADXL346)
 M:      Michael Hennerich <michael.hennerich@analog.com>
 L:      device-driver-devel@blackfin.uclinux.org
-W:      http://wiki-analog.com/ADXL345
+W:      http://wiki.analog.com/ADXL345
 S:      Supported
 F:      drivers/input/misc/adxl34x.c
 
@@ -528,11 +528,9 @@ F:	drivers/infiniband/hw/amso1100/
 ANALOG DEVICES INC ASOC CODEC DRIVERS
 L:      device-driver-devel@blackfin.uclinux.org
 L:      alsa-devel@alsa-project.org (moderated for non-subscribers)
-W:      http://wiki-analog.com/
+W:      http://wiki.analog.com/
 S:      Supported
 F:      sound/soc/codecs/ad1*
-F:      sound/soc/codecs/adau*
-F:      sound/soc/codecs/adav*
 F:      sound/soc/codecs/ssm*
 
 ANALOG DEVICES INC ASOC DRIVERS
@@ -697,8 +695,8 @@ S:	Maintained
 ARM/CLKDEV SUPPORT
 M:      Russell King <linux@arm.linux.org.uk>
 L:      linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
-F:      arch/arm/common/clkdev.c
 F:      arch/arm/include/asm/clkdev.h
+F:      drivers/clk/clkdev.c
 
 ARM/COMPULAB CM-X270/EM-X270 and CM-X300 MACHINE SUPPORT
 M:      Mike Rapoport <mike@compulab.co.il>
@@ -919,6 +917,7 @@ F:	drivers/mmc/host/msm_sdcc.c
 F:      drivers/mmc/host/msm_sdcc.h
 F:      drivers/tty/serial/msm_serial.h
 F:      drivers/tty/serial/msm_serial.c
+F:      drivers/platform/msm/
 T:      git git://codeaurora.org/quic/kernel/davidb/linux-msm.git
 S:      Maintained
 
@@ -1078,7 +1077,7 @@ L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:      Maintained
 
 ARM/TETON BGA MACHINE SUPPORT
-M:      Mark F. Brown <mark.brown314@gmail.com>
+M:      "Mark F. Brown" <mark.brown314@gmail.com>
 L:      linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:      Maintained
 
@@ -1482,7 +1481,7 @@ F:	drivers/mtd/devices/block2mtd.c
 
 BLUETOOTH DRIVERS
 M:      Marcel Holtmann <marcel@holtmann.org>
-M:      Gustavo F. Padovan <padovan@profusion.mobi>
+M:      "Gustavo F. Padovan" <padovan@profusion.mobi>
 L:      linux-bluetooth@vger.kernel.org
 W:      http://www.bluez.org/
 T:      git git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-2.6.git
@@ -1491,7 +1490,7 @@ F:	drivers/bluetooth/
 
 BLUETOOTH SUBSYSTEM
 M:      Marcel Holtmann <marcel@holtmann.org>
-M:      Gustavo F. Padovan <padovan@profusion.mobi>
+M:      "Gustavo F. Padovan" <padovan@profusion.mobi>
 L:      linux-bluetooth@vger.kernel.org
 W:      http://www.bluez.org/
 T:      git git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-2.6.git
@@ -2138,6 +2137,12 @@ F:	Documentation/serial/digiepca.txt
 F:      drivers/char/epca*
 F:      drivers/char/digi*
 
+DIOLAN U2C-12 I2C DRIVER
+M:      Guenter Roeck <guenter.roeck@ericsson.com>
+L:      linux-i2c@vger.kernel.org
+S:      Maintained
+F:      drivers/i2c/busses/i2c-diolan-u2c.c
+
 DIRECTORY NOTIFICATION (DNOTIFY)
 M:      Eric Paris <eparis@parisplace.org>
 S:      Maintained
@@ -2475,8 +2480,7 @@ F:	include/linux/cb710.h
 ENE KB2426 (ENE0100/ENE020XX) INFRARED RECEIVER
 M:      Maxim Levitsky <maximlevitsky@gmail.com>
 S:      Maintained
-F:      drivers/media/IR/ene_ir.c
-F:      drivers/media/IR/ene_ir.h
+F:      drivers/media/rc/ene_ir.*
 
 EPSON 1355 FRAMEBUFFER DRIVER
 M:      Christopher Hoover <ch@murgatroid.com>
@@ -2820,7 +2824,6 @@ F:	include/linux/gigaset_dev.h
 
 GPIO SUBSYSTEM
 M:      Grant Likely <grant.likely@secretlab.ca>
-L:      linux-kernel@vger.kernel.org
 S:      Maintained
 T:      git git://git.secretlab.ca/git/linux-2.6.git
 F:      Documentation/gpio/gpio.txt
@@ -2843,7 +2846,6 @@ F:	drivers/platform/x86/hdaps.c
 HWPOISON MEMORY FAILURE HANDLING
 M:      Andi Kleen <andi@firstfloor.org>
 L:      linux-mm@kvack.org
-L:      linux-kernel@vger.kernel.org
 T:      git git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6.git hwpoison
 S:      Maintained
 F:      mm/memory-failure.c
@@ -2944,7 +2946,7 @@ F:	Documentation/blockdev/cpqarray.txt
 F:      drivers/block/cpqarray.*
 
 HEWLETT-PACKARD SMART ARRAY RAID DRIVER (hpsa)
-M:      Stephen M. Cameron <scameron@beardog.cce.hp.com>
+M:      "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
 L:      iss_storagedev@hp.com
 S:      Supported
 F:      Documentation/scsi/hpsa.txt
@@ -3001,7 +3003,7 @@ F:	kernel/hrtimer.c
 F:      kernel/time/clockevents.c
 F:      kernel/time/tick*.*
 F:      kernel/time/timer_*.c
-F       include/linux/clockevents.h
+F:      include/linux/clockevents.h
 F:      include/linux/hrtimer.h
 
 HIGH-SPEED SCC DRIVER FOR AX.25
@@ -3174,15 +3176,6 @@ L:	linux-pm@lists.linux-foundation.org
 S:      Supported
 F:      drivers/idle/i7300_idle.c
 
-IEEE 1394 SUBSYSTEM
-M:      Stefan Richter <stefanr@s5r6.in-berlin.de>
-L:      linux1394-devel@lists.sourceforge.net
-W:      http://ieee1394.wiki.kernel.org/
-T:      git git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6.git
-S:      Obsolete
-F:      Documentation/debugging-via-ohci1394.txt
-F:      drivers/ieee1394/
-
 IEEE 802.15.4 SUBSYSTEM
 M:      Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
 M:      Sergey Lapin <slapin@ossfans.org>
@@ -4226,7 +4219,7 @@ F:	Documentation/serial/moxa-smartio
 F:      drivers/char/mxser.*
 
 MSI LAPTOP SUPPORT
-M:      Lee, Chun-Yi <jlee@novell.com>
+M:      "Lee, Chun-Yi" <jlee@novell.com>
 L:      platform-driver-x86@vger.kernel.org
 S:      Maintained
 F:      drivers/platform/x86/msi-laptop.c
@@ -4721,7 +4714,6 @@ F:	drivers/i2c/busses/i2c-pasemi.c
 
 PADATA PARALLEL EXECUTION MECHANISM
 M:      Steffen Klassert <steffen.klassert@secunet.com>
-L:      linux-kernel@vger.kernel.org
 L:      linux-crypto@vger.kernel.org
 S:      Maintained
 F:      kernel/padata.c
@@ -4871,7 +4863,6 @@ F:	include/crypto/pcrypt.h
 PER-CPU MEMORY ALLOCATOR
 M:      Tejun Heo <tj@kernel.org>
 M:      Christoph Lameter <cl@linux-foundation.org>
-L:      linux-kernel@vger.kernel.org
 T:      git git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu.git
 S:      Maintained
 F:      include/linux/percpu*.h
@@ -5430,7 +5421,6 @@ S:	Supported
 F:      include/linux/clocksource.h
 F:      include/linux/time.h
 F:      include/linux/timex.h
-F:      include/linux/timekeeping.h
 F:      kernel/time/clocksource.c
 F:      kernel/time/time*.c
 F:      kernel/time/ntp.c
@@ -5518,7 +5508,7 @@ SCx200 CPU SUPPORT
 M:      Jim Cromie <jim.cromie@gmail.com>
 S:      Odd Fixes
 F:      Documentation/i2c/busses/scx200_acb
-F:      arch/x86/kernel/scx200_32.c
+F:      arch/x86/platform/scx200/
 F:      drivers/watchdog/scx200_wdt.c
 F:      drivers/i2c/busses/scx200*
 F:      drivers/mtd/maps/scx200_docflash.c
@@ -5662,24 +5652,13 @@ M:	Robin Holt <holt@sgi.com>
 S:      Maintained
 F:      drivers/misc/sgi-xp/
 
-SHARP LH SUPPORT (LH7952X & LH7A40X)
-M:      Marc Singer <elf@buici.com>
-W:      http://projects.buici.com/arm
-L:      linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
-S:      Maintained
-F:      Documentation/arm/Sharp-LH/ADC-LH7-Touchscreen
-F:      arch/arm/mach-lh7a40x/
-F:      drivers/tty/serial/serial_lh7a40x.c
-F:      drivers/usb/gadget/lh7a40*
-F:      drivers/usb/host/ohci-lh7a40*
-
 SIMPLE FIRMWARE INTERFACE (SFI)
 M:      Len Brown <lenb@kernel.org>
 L:      sfi-devel@simplefirmware.org
 W:      http://simplefirmware.org/
 T:      git git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-sfi-2.6.git
 S:      Supported
-F:      arch/x86/kernel/*sfi*
+F:      arch/x86/platform/sfi/
 F:      drivers/sfi/
 F:      include/linux/sfi*.h
 
@@ -6487,12 +6466,11 @@ S:	Maintained
 F:      drivers/net/usb/rtl8150.c
 
 USB SE401 DRIVER
-M:      Jeroen Vreeken <pe1rxq@amsat.org>
 L:      linux-usb@vger.kernel.org
 W:      http://www.chello.nl/~j.vreeken/se401/
-S:      Maintained
+S:      Orphan
 F:      Documentation/video4linux/se401.txt
-F:      drivers/media/video/se401.*
+F:      drivers/staging/se401/
 
 USB SERIAL BELKIN F5U103 DRIVER
 M:      William Greathouse <wgreathouse@smva.com>
@@ -6842,7 +6820,7 @@ F:	drivers/scsi/wd7000.c
 WINBOND CIR DRIVER
 M:      David Härdeman <david@hardeman.nu>
 S:      Maintained
-F:      drivers/input/misc/winbond-cir.c
+F:      drivers/media/rc/winbond-cir.c
 
 WIMAX STACK
 M:      Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
@@ -6919,7 +6897,6 @@ F:	sound/soc/codecs/wm*
 
 WORKQUEUE
 M:      Tejun Heo <tj@kernel.org>
-L:      linux-kernel@vger.kernel.org
 T:      git git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git
 S:      Maintained
 F:      include/linux/workqueue.h
diff --git a/arch/alpha/include/asm/types.h b/arch/alpha/include/asm/types.h
index bd621ecd1eb3..e46e50382d28 100644
--- a/arch/alpha/include/asm/types.h
+++ b/arch/alpha/include/asm/types.h
@@ -27,7 +27,6 @@ typedef unsigned int umode_t;
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__
 
-typedef u64 dma_addr_t;
 typedef u64 dma64_addr_t;
 
 #endif /* __ASSEMBLY__ */
diff --git a/arch/arm/include/asm/types.h b/arch/arm/include/asm/types.h
index 345df01534a4..c684e3769f47 100644
--- a/arch/arm/include/asm/types.h
+++ b/arch/arm/include/asm/types.h
@@ -18,9 +18,6 @@ typedef unsigned short umode_t;
 
 #ifndef __ASSEMBLY__
 
-/* Dma addresses are 32-bits wide.  */
-
-typedef u32 dma_addr_t;
 typedef u32 dma64_addr_t;
 
 #endif /* __ASSEMBLY__ */
diff --git a/arch/arm/mach-mmp/include/mach/mmp2.h b/arch/arm/mach-mmp/include/mach/mmp2.h
index 4aec493640b4..2cbf6df09b82 100644
--- a/arch/arm/mach-mmp/include/mach/mmp2.h
+++ b/arch/arm/mach-mmp/include/mach/mmp2.h
@@ -11,8 +11,8 @@ extern void __init mmp2_init_irq(void);
 extern void mmp2_clear_pmic_int(void);
 
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <mach/devices.h>
-#include <plat/i2c.h>
 
 extern struct pxa_device_desc mmp2_device_uart1;
 extern struct pxa_device_desc mmp2_device_uart2;
diff --git a/arch/arm/mach-mmp/include/mach/pxa168.h b/arch/arm/mach-mmp/include/mach/pxa168.h
index 1801e4206232..a52b3d2f325c 100644
--- a/arch/arm/mach-mmp/include/mach/pxa168.h
+++ b/arch/arm/mach-mmp/include/mach/pxa168.h
@@ -8,8 +8,8 @@ extern void __init pxa168_init_irq(void);
 extern void pxa168_clear_keypad_wakeup(void);
 
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <mach/devices.h>
-#include <plat/i2c.h>
 #include <plat/pxa3xx_nand.h>
 #include <video/pxa168fb.h>
 #include <plat/pxa27x_keypad.h>
diff --git a/arch/arm/mach-mmp/include/mach/pxa910.h b/arch/arm/mach-mmp/include/mach/pxa910.h
index f13c49d6f8dc..91be75591398 100644
--- a/arch/arm/mach-mmp/include/mach/pxa910.h
+++ b/arch/arm/mach-mmp/include/mach/pxa910.h
@@ -7,8 +7,8 @@ extern struct sys_timer pxa910_timer;
 extern void __init pxa910_init_irq(void);
 
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <mach/devices.h>
-#include <plat/i2c.h>
 #include <plat/pxa3xx_nand.h>
 
 extern struct pxa_device_desc pxa910_device_uart1;
diff --git a/arch/arm/mach-mxs/include/mach/dma.h b/arch/arm/mach-mxs/include/mach/dma.h
new file mode 100644
index 000000000000..7f4aeeaba8df
--- /dev/null
+++ b/arch/arm/mach-mxs/include/mach/dma.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __MACH_MXS_DMA_H__
+#define __MACH_MXS_DMA_H__
+
+struct mxs_dma_data {
+        int chan_irq;
+};
+
+static inline int mxs_dma_is_apbh(struct dma_chan *chan)
+{
+        return !strcmp(dev_name(chan->device->dev), "mxs-dma-apbh");
+}
+
+static inline int mxs_dma_is_apbx(struct dma_chan *chan)
+{
+        return !strcmp(dev_name(chan->device->dev), "mxs-dma-apbx");
+}
+
+#endif /* __MACH_MXS_DMA_H__ */
diff --git a/arch/arm/mach-pxa/balloon3.c b/arch/arm/mach-pxa/balloon3.c
index e194d928cdaa..d2af73321dae 100644
--- a/arch/arm/mach-pxa/balloon3.c
+++ b/arch/arm/mach-pxa/balloon3.c
@@ -27,6 +27,7 @@
 #include <linux/mtd/partitions.h>
 #include <linux/types.h>
 #include <linux/i2c/pcf857x.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/mtd/nand.h>
 #include <linux/mtd/physmap.h>
 #include <linux/regulator/max1586.h>
@@ -51,8 +52,6 @@
 #include <mach/irda.h>
 #include <mach/ohci.h>
 
-#include <plat/i2c.h>
-
 #include "generic.h"
 #include "devices.h"
 
diff --git a/arch/arm/mach-pxa/cm-x300.c b/arch/arm/mach-pxa/cm-x300.c
index 7984268508b6..bfca7ed2fea3 100644
--- a/arch/arm/mach-pxa/cm-x300.c
+++ b/arch/arm/mach-pxa/cm-x300.c
@@ -29,6 +29,7 @@
 
 #include <linux/i2c.h>
 #include <linux/i2c/pca953x.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <linux/mfd/da903x.h>
 #include <linux/regulator/machine.h>
@@ -48,7 +49,6 @@
 #include <mach/pxafb.h>
 #include <mach/mmc.h>
 #include <mach/ohci.h>
-#include <plat/i2c.h>
 #include <plat/pxa3xx_nand.h>
 #include <mach/audio.h>
 #include <mach/pxa3xx-u2d.h>
diff --git a/arch/arm/mach-pxa/colibri-evalboard.c b/arch/arm/mach-pxa/colibri-evalboard.c
index 28f667e52ef9..81c3c433e2d6 100644
--- a/arch/arm/mach-pxa/colibri-evalboard.c
+++ b/arch/arm/mach-pxa/colibri-evalboard.c
@@ -20,6 +20,7 @@
 #include <mach/hardware.h>
 #include <asm/mach/arch.h>
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <mach/pxa27x.h>
 #include <mach/colibri.h>
@@ -27,8 +28,6 @@
 #include <mach/ohci.h>
 #include <mach/pxa27x-udc.h>
 
-#include <plat/i2c.h>
-
 #include "generic.h"
 #include "devices.h"
 
diff --git a/arch/arm/mach-pxa/colibri-pxa270-income.c b/arch/arm/mach-pxa/colibri-pxa270-income.c
index 07b62a096f17..ee797397dc5b 100644
--- a/arch/arm/mach-pxa/colibri-pxa270-income.c
+++ b/arch/arm/mach-pxa/colibri-pxa270-income.c
@@ -21,6 +21,7 @@
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
 #include <linux/pwm_backlight.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/sysdev.h>
 
 #include <asm/irq.h>
@@ -33,8 +34,6 @@
 #include <mach/pxa27x-udc.h>
 #include <mach/pxafb.h>
 
-#include <plat/i2c.h>
-
 #include "devices.h"
 #include "generic.h"
 
diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c
index a5452a3a276d..d4e705caefea 100644
--- a/arch/arm/mach-pxa/corgi.c
+++ b/arch/arm/mach-pxa/corgi.c
@@ -24,6 +24,7 @@
 #include <linux/gpio.h>
 #include <linux/backlight.h>
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/io.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
@@ -45,7 +46,6 @@
 #include <asm/mach/irq.h>
 
 #include <mach/pxa25x.h>
-#include <plat/i2c.h>
 #include <mach/irda.h>
 #include <mach/mmc.h>
 #include <mach/udc.h>
diff --git a/arch/arm/mach-pxa/csb726.c b/arch/arm/mach-pxa/csb726.c
index a305424a967d..0481c29a70e8 100644
--- a/arch/arm/mach-pxa/csb726.c
+++ b/arch/arm/mach-pxa/csb726.c
@@ -17,12 +17,12 @@
 #include <linux/mtd/partitions.h>
 #include <linux/sm501.h>
 #include <linux/smsc911x.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <mach/csb726.h>
 #include <mach/mfp-pxa27x.h>
-#include <plat/i2c.h>
 #include <mach/mmc.h>
 #include <mach/ohci.h>
 #include <mach/pxa2xx-regs.h>
diff --git a/arch/arm/mach-pxa/devices.c b/arch/arm/mach-pxa/devices.c
index 4c766e3b4af3..c4bf08b3eb61 100644
--- a/arch/arm/mach-pxa/devices.c
+++ b/arch/arm/mach-pxa/devices.c
@@ -4,6 +4,7 @@
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
 #include <linux/spi/pxa2xx_spi.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <asm/pmu.h>
 #include <mach/udc.h>
@@ -16,7 +17,6 @@
 #include <mach/camera.h>
 #include <mach/audio.h>
 #include <mach/hardware.h>
-#include <plat/i2c.h>
 #include <plat/pxa3xx_nand.h>
 
 #include "devices.h"
diff --git a/arch/arm/mach-pxa/em-x270.c b/arch/arm/mach-pxa/em-x270.c
index a78bb3097739..b411d7cbf5a1 100644
--- a/arch/arm/mach-pxa/em-x270.c
+++ b/arch/arm/mach-pxa/em-x270.c
@@ -31,6 +31,7 @@
 #include <linux/apm-emulation.h>
 #include <linux/i2c.h>
 #include <linux/i2c/pca953x.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/regulator/userspace-consumer.h>
 
 #include <media/soc_camera.h>
@@ -45,7 +46,6 @@
 #include <mach/ohci.h>
 #include <mach/mmc.h>
 #include <plat/pxa27x_keypad.h>
-#include <plat/i2c.h>
 #include <mach/camera.h>
 
 #include "generic.h"
diff --git a/arch/arm/mach-pxa/ezx.c b/arch/arm/mach-pxa/ezx.c
index 87cec0abe5b0..93f05e024313 100644
--- a/arch/arm/mach-pxa/ezx.c
+++ b/arch/arm/mach-pxa/ezx.c
@@ -20,6 +20,7 @@
 #include <linux/gpio.h>
 #include <linux/gpio_keys.h>
 #include <linux/leds-lp3944.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <media/soc_camera.h>
 
@@ -30,7 +31,6 @@
 #include <mach/pxa27x.h>
 #include <mach/pxafb.h>
 #include <mach/ohci.h>
-#include <plat/i2c.h>
 #include <mach/hardware.h>
 #include <plat/pxa27x_keypad.h>
 #include <mach/camera.h>
diff --git a/arch/arm/mach-pxa/hx4700.c b/arch/arm/mach-pxa/hx4700.c
index a908e0a5f396..6de0ad0eea65 100644
--- a/arch/arm/mach-pxa/hx4700.c
+++ b/arch/arm/mach-pxa/hx4700.c
@@ -35,6 +35,7 @@
 #include <linux/spi/spi.h>
 #include <linux/spi/pxa2xx_spi.h>
 #include <linux/usb/gpio_vbus.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
@@ -42,7 +43,6 @@
 
 #include <mach/pxa27x.h>
 #include <mach/hx4700.h>
-#include <plat/i2c.h>
 #include <mach/irda.h>
 
 #include <video/platform_lcd.h>
diff --git a/arch/arm/mach-pxa/littleton.c b/arch/arm/mach-pxa/littleton.c
index ccb7bfad17ca..87c1ed9ccd2f 100644
--- a/arch/arm/mach-pxa/littleton.c
+++ b/arch/arm/mach-pxa/littleton.c
@@ -28,6 +28,7 @@
 #include <linux/leds.h>
 #include <linux/mfd/da903x.h>
 #include <linux/i2c/max732x.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <asm/types.h>
 #include <asm/setup.h>
@@ -45,7 +46,6 @@
 #include <mach/mmc.h>
 #include <plat/pxa27x_keypad.h>
 #include <mach/littleton.h>
-#include <plat/i2c.h>
 #include <plat/pxa3xx_nand.h>
 
 #include "generic.h"
diff --git a/arch/arm/mach-pxa/magician.c b/arch/arm/mach-pxa/magician.c
index 41198f0dc3ac..5535991c4a3c 100644
--- a/arch/arm/mach-pxa/magician.c
+++ b/arch/arm/mach-pxa/magician.c
@@ -28,6 +28,7 @@
 #include <linux/regulator/bq24022.h>
 #include <linux/regulator/machine.h>
 #include <linux/usb/gpio_vbus.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
@@ -36,7 +37,6 @@
 #include <mach/pxa27x.h>
 #include <mach/magician.h>
 #include <mach/pxafb.h>
-#include <plat/i2c.h>
 #include <mach/mmc.h>
 #include <mach/irda.h>
 #include <mach/ohci.h>
diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
index d4b6f2375f2c..f9542220595a 100644
--- a/arch/arm/mach-pxa/mainstone.c
+++ b/arch/arm/mach-pxa/mainstone.c
@@ -27,6 +27,7 @@
 #include <linux/gpio_keys.h>
 #include <linux/pwm_backlight.h>
 #include <linux/smc91x.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <asm/types.h>
 #include <asm/setup.h>
@@ -46,7 +47,6 @@
 #include <mach/mainstone.h>
 #include <mach/audio.h>
 #include <mach/pxafb.h>
-#include <plat/i2c.h>
 #include <mach/mmc.h>
 #include <mach/irda.h>
 #include <mach/ohci.h>
diff --git a/arch/arm/mach-pxa/mioa701.c b/arch/arm/mach-pxa/mioa701.c
index faafea3542fb..78d98a8607ec 100644
--- a/arch/arm/mach-pxa/mioa701.c
+++ b/arch/arm/mach-pxa/mioa701.c
@@ -39,6 +39,7 @@
 #include <linux/usb/gpio_vbus.h>
 #include <linux/regulator/max1586.h>
 #include <linux/slab.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -50,7 +51,6 @@
 #include <mach/mmc.h>
 #include <mach/udc.h>
 #include <mach/pxa27x-udc.h>
-#include <plat/i2c.h>
 #include <mach/camera.h>
 #include <mach/audio.h>
 #include <media/soc_camera.h>
diff --git a/arch/arm/mach-pxa/mxm8x10.c b/arch/arm/mach-pxa/mxm8x10.c
index cdf7f41e2bb3..b5a8fd3fce04 100644
--- a/arch/arm/mach-pxa/mxm8x10.c
+++ b/arch/arm/mach-pxa/mxm8x10.c
@@ -22,8 +22,8 @@
 #include <linux/serial_8250.h>
 #include <linux/dm9000.h>
 #include <linux/gpio.h>
+#include <linux/i2c/pxa-i2c.h>
 
-#include <plat/i2c.h>
 #include <plat/pxa3xx_nand.h>
 
 #include <mach/pxafb.h>
diff --git a/arch/arm/mach-pxa/palm27x.c b/arch/arm/mach-pxa/palm27x.c
index 35572c427fa8..72adb3ae2b43 100644
--- a/arch/arm/mach-pxa/palm27x.c
+++ b/arch/arm/mach-pxa/palm27x.c
@@ -22,6 +22,7 @@
 #include <linux/power_supply.h>
 #include <linux/usb/gpio_vbus.h>
 #include <linux/regulator/max1586.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -36,8 +37,6 @@
 #include <mach/palmasoc.h>
 #include <mach/palm27x.h>
 
-#include <plat/i2c.h>
-
 #include "generic.h"
 #include "devices.h"
 
diff --git a/arch/arm/mach-pxa/pcm990-baseboard.c b/arch/arm/mach-pxa/pcm990-baseboard.c
index 90820faa711a..9dbf3ccd4150 100644
--- a/arch/arm/mach-pxa/pcm990-baseboard.c
+++ b/arch/arm/mach-pxa/pcm990-baseboard.c
@@ -23,12 +23,12 @@
 #include <linux/irq.h>
 #include <linux/platform_device.h>
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/pwm_backlight.h>
 
 #include <media/soc_camera.h>
 
 #include <asm/gpio.h>
-#include <plat/i2c.h>
 #include <mach/camera.h>
 #include <asm/mach/map.h>
 #include <mach/pxa27x.h>
diff --git a/arch/arm/mach-pxa/poodle.c b/arch/arm/mach-pxa/poodle.c
index 4f0ff1ab623d..35353af345d5 100644
--- a/arch/arm/mach-pxa/poodle.c
+++ b/arch/arm/mach-pxa/poodle.c
@@ -23,6 +23,7 @@
 #include <linux/mtd/physmap.h>
 #include <linux/gpio.h>
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
 #include <linux/spi/pxa2xx_spi.h>
@@ -44,7 +45,6 @@
 #include <mach/irda.h>
 #include <mach/poodle.h>
 #include <mach/pxafb.h>
-#include <plat/i2c.h>
 
 #include <asm/hardware/scoop.h>
 #include <asm/hardware/locomo.h>
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index 28b11be00b3f..1cb5d0f9723f 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -19,6 +19,7 @@
 #include <linux/sysdev.h>
 #include <linux/io.h>
 #include <linux/irq.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <asm/mach/map.h>
 #include <mach/hardware.h>
@@ -32,8 +33,6 @@
 #include <mach/dma.h>
 #include <mach/smemc.h>
 
-#include <plat/i2c.h>
-
 #include "generic.h"
 #include "devices.h"
 #include "clock.h"
diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index 1230343d9c70..f374247b8466 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -21,6 +21,7 @@
 #include <linux/irq.h>
 #include <linux/io.h>
 #include <linux/sysdev.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <asm/mach/map.h>
 #include <mach/hardware.h>
@@ -32,7 +33,6 @@
 #include <mach/dma.h>
 #include <mach/regs-intc.h>
 #include <mach/smemc.h>
-#include <plat/i2c.h>
 
 #include "generic.h"
 #include "devices.h"
diff --git a/arch/arm/mach-pxa/pxa95x.c b/arch/arm/mach-pxa/pxa95x.c
index 437980f72710..23b229bd06e9 100644
--- a/arch/arm/mach-pxa/pxa95x.c
+++ b/arch/arm/mach-pxa/pxa95x.c
@@ -15,6 +15,7 @@
 #include <linux/init.h>
 #include <linux/pm.h>
 #include <linux/platform_device.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/irq.h>
 #include <linux/io.h>
 #include <linux/sysdev.h>
@@ -27,7 +28,6 @@
 #include <mach/pm.h>
 #include <mach/dma.h>
 #include <mach/regs-intc.h>
-#include <plat/i2c.h>
 
 #include "generic.h"
 #include "devices.h"
diff --git a/arch/arm/mach-pxa/raumfeld.c b/arch/arm/mach-pxa/raumfeld.c
index 8361151be054..47094188e029 100644
--- a/arch/arm/mach-pxa/raumfeld.c
+++ b/arch/arm/mach-pxa/raumfeld.c
@@ -32,6 +32,7 @@
 #include <linux/sched.h>
 #include <linux/pwm_backlight.h>
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/spi_gpio.h>
 #include <linux/lis3lv02d.h>
@@ -53,7 +54,6 @@
 #include <mach/ohci.h>
 #include <mach/pxafb.h>
 #include <mach/mmc.h>
-#include <plat/i2c.h>
 #include <plat/pxa3xx_nand.h>
 
 #include "generic.h"
diff --git a/arch/arm/mach-pxa/saar.c b/arch/arm/mach-pxa/saar.c
index c1ca8cb467fc..eb83c89428ef 100644
--- a/arch/arm/mach-pxa/saar.c
+++ b/arch/arm/mach-pxa/saar.c
@@ -20,6 +20,7 @@
 #include <linux/delay.h>
 #include <linux/fb.h>
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/smc91x.h>
 #include <linux/mfd/da903x.h>
 #include <linux/mtd/mtd.h>
@@ -31,7 +32,6 @@
 #include <asm/mach/flash.h>
 
 #include <mach/pxa930.h>
-#include <plat/i2c.h>
 #include <mach/pxafb.h>
 
 #include "devices.h"
diff --git a/arch/arm/mach-pxa/saarb.c b/arch/arm/mach-pxa/saarb.c
index e497922f761a..9322fe527c7f 100644
--- a/arch/arm/mach-pxa/saarb.c
+++ b/arch/arm/mach-pxa/saarb.c
@@ -13,6 +13,7 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/mfd/88pm860x.h>
 
 #include <asm/mach-types.h>
@@ -24,8 +25,6 @@
 #include <mach/mfp-pxa930.h>
 #include <mach/gpio.h>
 
-#include <plat/i2c.h>
-
 #include "generic.h"
 
 #define SAARB_NR_IRQS   (IRQ_BOARD_START + 40)
diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c
index b49a2c21124c..38e2c0912b9a 100644
--- a/arch/arm/mach-pxa/spitz.c
+++ b/arch/arm/mach-pxa/spitz.c
@@ -19,6 +19,7 @@
 #include <linux/gpio.h>
 #include <linux/leds.h>
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/i2c/pca953x.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
@@ -47,8 +48,6 @@
 #include <mach/sharpsl_pm.h>
 #include <mach/smemc.h>
 
-#include <plat/i2c.h>
-
 #include "generic.h"
 #include "devices.h"
 
diff --git a/arch/arm/mach-pxa/stargate2.c b/arch/arm/mach-pxa/stargate2.c
index 9a14fdb83c82..cb5611daf5fe 100644
--- a/arch/arm/mach-pxa/stargate2.c
+++ b/arch/arm/mach-pxa/stargate2.c
@@ -25,6 +25,7 @@
 #include <linux/mtd/plat-ram.h>
 #include <linux/mtd/partitions.h>
 
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/i2c/pcf857x.h>
 #include <linux/i2c/at24.h>
 #include <linux/smc91x.h>
@@ -43,7 +44,6 @@
 #include <asm/mach/flash.h>
 
 #include <mach/pxa27x.h>
-#include <plat/i2c.h>
 #include <mach/mmc.h>
 #include <mach/udc.h>
 #include <mach/pxa27x-udc.h>
diff --git a/arch/arm/mach-pxa/tavorevb3.c b/arch/arm/mach-pxa/tavorevb3.c
index 70191a9450eb..79f4422f12f4 100644
--- a/arch/arm/mach-pxa/tavorevb3.c
+++ b/arch/arm/mach-pxa/tavorevb3.c
@@ -15,6 +15,7 @@
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/gpio.h>
 #include <linux/mfd/88pm860x.h>
 
@@ -23,8 +24,6 @@
 
 #include <mach/pxa930.h>
 
-#include <plat/i2c.h>
-
 #include "devices.h"
 #include "generic.h"
 
diff --git a/arch/arm/mach-pxa/tosa.c b/arch/arm/mach-pxa/tosa.c
index f2582ec300d9..5ad3807af334 100644
--- a/arch/arm/mach-pxa/tosa.c
+++ b/arch/arm/mach-pxa/tosa.c
@@ -34,6 +34,7 @@
 #include <linux/spi/spi.h>
 #include <linux/spi/pxa2xx_spi.h>
 #include <linux/input/matrix_keypad.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <asm/setup.h>
 #include <asm/mach-types.h>
@@ -41,7 +42,6 @@
 #include <mach/pxa25x.h>
 #include <mach/reset.h>
 #include <mach/irda.h>
-#include <plat/i2c.h>
 #include <mach/mmc.h>
 #include <mach/udc.h>
 #include <mach/tosa_bt.h>
diff --git a/arch/arm/mach-pxa/trizeps4.c b/arch/arm/mach-pxa/trizeps4.c
index 423261d63d07..857bb2e63486 100644
--- a/arch/arm/mach-pxa/trizeps4.c
+++ b/arch/arm/mach-pxa/trizeps4.c
@@ -26,6 +26,7 @@
 #include <linux/dm9000.h>
 #include <linux/mtd/physmap.h>
 #include <linux/mtd/partitions.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <asm/types.h>
 #include <asm/setup.h>
@@ -47,7 +48,6 @@
 #include <mach/irda.h>
 #include <mach/ohci.h>
 #include <mach/smemc.h>
-#include <plat/i2c.h>
 
 #include "generic.h"
 #include "devices.h"
diff --git a/arch/arm/mach-pxa/viper.c b/arch/arm/mach-pxa/viper.c
index 49eeeab23689..12279214c875 100644
--- a/arch/arm/mach-pxa/viper.c
+++ b/arch/arm/mach-pxa/viper.c
@@ -36,6 +36,7 @@
 #include <linux/gpio.h>
 #include <linux/jiffies.h>
 #include <linux/i2c-gpio.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/serial_8250.h>
 #include <linux/smc91x.h>
 #include <linux/pwm_backlight.h>
@@ -47,7 +48,6 @@
 #include <mach/pxa25x.h>
 #include <mach/audio.h>
 #include <mach/pxafb.h>
-#include <plat/i2c.h>
 #include <mach/regs-uart.h>
 #include <mach/arcom-pcmcia.h>
 #include <mach/viper.h>
diff --git a/arch/arm/mach-pxa/vpac270.c b/arch/arm/mach-pxa/vpac270.c
index b9b579715ff6..e709fd459268 100644
--- a/arch/arm/mach-pxa/vpac270.c
+++ b/arch/arm/mach-pxa/vpac270.c
@@ -26,6 +26,7 @@
 #include <linux/ucb1400.h>
 #include <linux/ata_platform.h>
 #include <linux/regulator/max1586.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -40,8 +41,6 @@
 #include <mach/udc.h>
 #include <mach/pata_pxa.h>
 
-#include <plat/i2c.h>
-
 #include "generic.h"
 #include "devices.h"
 
diff --git a/arch/arm/mach-pxa/xcep.c b/arch/arm/mach-pxa/xcep.c
index 51c0281c6e0a..f55f8f2e0db3 100644
--- a/arch/arm/mach-pxa/xcep.c
+++ b/arch/arm/mach-pxa/xcep.c
@@ -16,6 +16,7 @@
 
 #include <linux/platform_device.h>
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/smc91x.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
@@ -26,8 +27,6 @@
 #include <asm/mach/irq.h>
 #include <asm/mach/map.h>
 
-#include <plat/i2c.h>
-
 #include <mach/hardware.h>
 #include <mach/pxa2xx-regs.h>
 #include <mach/mfp-pxa25x.h>
diff --git a/arch/arm/mach-pxa/z2.c b/arch/arm/mach-pxa/z2.c
index a323e076129e..aaf883754ef4 100644
--- a/arch/arm/mach-pxa/z2.c
+++ b/arch/arm/mach-pxa/z2.c
@@ -29,6 +29,7 @@
 #include <linux/gpio_keys.h>
 #include <linux/delay.h>
 #include <linux/regulator/machine.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -40,8 +41,6 @@
 #include <mach/mmc.h>
 #include <plat/pxa27x_keypad.h>
 
-#include <plat/i2c.h>
-
 #include "generic.h"
 #include "devices.h"
 
diff --git a/arch/arm/mach-pxa/zeus.c b/arch/arm/mach-pxa/zeus.c
index b92aa3b8c4f7..730f51e57c17 100644
--- a/arch/arm/mach-pxa/zeus.c
+++ b/arch/arm/mach-pxa/zeus.c
@@ -25,6 +25,7 @@
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/i2c/pca953x.h>
 #include <linux/apm-emulation.h>
 #include <linux/can/platform/mcp251x.h>
@@ -33,8 +34,6 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 
-#include <plat/i2c.h>
-
 #include <mach/pxa2xx-regs.h>
 #include <mach/regs-uart.h>
 #include <mach/ohci.h>
diff --git a/arch/arm/mach-pxa/zylonite_pxa300.c b/arch/arm/mach-pxa/zylonite_pxa300.c
index 3aa73b3e33f2..93c64d8d7de9 100644
--- a/arch/arm/mach-pxa/zylonite_pxa300.c
+++ b/arch/arm/mach-pxa/zylonite_pxa300.c
@@ -17,11 +17,11 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/i2c.h>
+#include <linux/i2c/pxa-i2c.h>
 #include <linux/i2c/pca953x.h>
 #include <linux/gpio.h>
 
 #include <mach/pxa300.h>
-#include <plat/i2c.h>
 #include <mach/zylonite.h>
 
 #include "generic.h"
diff --git a/arch/arm/mach-s3c2410/h1940-bluetooth.c b/arch/arm/mach-s3c2410/h1940-bluetooth.c
index 6b86a722a7db..2c126bbca08d 100644
--- a/arch/arm/mach-s3c2410/h1940-bluetooth.c
+++ b/arch/arm/mach-s3c2410/h1940-bluetooth.c
@@ -18,12 +18,14 @@
 #include <linux/leds.h>
 #include <linux/gpio.h>
 #include <linux/rfkill.h>
+#include <linux/leds.h>
 
 #include <mach/regs-gpio.h>
 #include <mach/hardware.h>
 #include <mach/h1940-latch.h>
+#include <mach/h1940.h>
 
-#define DRV_NAME              "h1940-bt"
+#define DRV_NAME "h1940-bt"
 
 /* Bluetooth control */
 static void h1940bt_enable(int on)
@@ -37,6 +39,8 @@ static void h1940bt_enable(int on)
                 gpio_set_value(S3C2410_GPH(1), 1);
                 mdelay(10);
                 gpio_set_value(S3C2410_GPH(1), 0);
+
+                h1940_led_blink_set(-EINVAL, GPIO_LED_BLINK, NULL, NULL);
         }
         else {
                 gpio_set_value(S3C2410_GPH(1), 1);
@@ -44,6 +48,8 @@ static void h1940bt_enable(int on)
                 gpio_set_value(S3C2410_GPH(1), 0);
                 mdelay(10);
                 gpio_set_value(H1940_LATCH_BLUETOOTH_POWER, 0);
+
+                h1940_led_blink_set(-EINVAL, GPIO_LED_NO_BLINK_LOW, NULL, NULL);
         }
 }
 
@@ -85,7 +91,6 @@ static int __devinit h1940bt_probe(struct platform_device *pdev)
         s3c_gpio_cfgpin(S3C2410_GPH(3), S3C2410_GPH3_RXD0);
         s3c_gpio_setpull(S3C2410_GPH(3), S3C_GPIO_PULL_NONE);
 
-
         rfk = rfkill_alloc(DRV_NAME, &pdev->dev, RFKILL_TYPE_BLUETOOTH,
                         &h1940bt_rfkill_ops, NULL);
         if (!rfk) {
@@ -93,8 +98,6 @@ static int __devinit h1940bt_probe(struct platform_device *pdev)
                 goto err_rfk_alloc;
         }
 
-        rfkill_set_led_trigger_name(rfk, "h1940-bluetooth");
-
         ret = rfkill_register(rfk);
         if (ret)
                 goto err_rfkill;
diff --git a/arch/arm/mach-s3c2410/include/mach/h1940.h b/arch/arm/mach-s3c2410/include/mach/h1940.h
index 4559784129c0..2aa683c8d3d6 100644
--- a/arch/arm/mach-s3c2410/include/mach/h1940.h
+++ b/arch/arm/mach-s3c2410/include/mach/h1940.h
@@ -17,5 +17,8 @@
 #define H1940_SUSPEND_CHECK             (0x30080000)
 
 extern void h1940_pm_return(void);
+extern int h1940_led_blink_set(unsigned gpio, int state,
+        unsigned long *delay_on, unsigned long *delay_off);
+
 
 #endif /* __ASM_ARCH_H1940_H */
diff --git a/arch/arm/mach-s3c2410/mach-h1940.c b/arch/arm/mach-s3c2410/mach-h1940.c
index 1e93f176c1de..2a2fa0620133 100644
--- a/arch/arm/mach-s3c2410/mach-h1940.c
+++ b/arch/arm/mach-s3c2410/mach-h1940.c
@@ -23,8 +23,15 @@
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/gpio.h>
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
 #include <linux/pwm_backlight.h>
 #include <linux/i2c.h>
+#include <linux/leds.h>
+#include <linux/pda_power.h>
+#include <linux/s3c_adc_battery.h>
+#include <linux/delay.h>
+
 #include <video/platform_lcd.h>
 
 #include <linux/mmc/host.h>
@@ -203,20 +210,239 @@ static struct s3c2410fb_mach_info h1940_fb_info __initdata = {
         .num_displays = 1,
         .default_display = 0,
 
-        .lpcsel=        0x02,
-        .gpccon=        0xaa940659,
-        .gpccon_mask=   0xffffffff,
-        .gpcup=         0x0000ffff,
-        .gpcup_mask=    0xffffffff,
-        .gpdcon=        0xaa84aaa0,
-        .gpdcon_mask=   0xffffffff,
-        .gpdup=         0x0000faff,
-        .gpdup_mask=    0xffffffff,
+        .lpcsel =       0x02,
+        .gpccon =       0xaa940659,
+        .gpccon_mask =  0xffffc0f0,
+        .gpcup =        0x0000ffff,
+        .gpcup_mask =   0xffffffff,
+        .gpdcon =       0xaa84aaa0,
+        .gpdcon_mask =  0xffffffff,
+        .gpdup =        0x0000faff,
+        .gpdup_mask =   0xffffffff,
 };
 
-static struct platform_device h1940_device_leds = {
-        .name             = "h1940-leds",
+static int power_supply_init(struct device *dev)
+{
+        return gpio_request(S3C2410_GPF(2), "cable plugged");
+}
+
+static int h1940_is_ac_online(void)
+{
+        return !gpio_get_value(S3C2410_GPF(2));
+}
+
+static void power_supply_exit(struct device *dev)
+{
+        gpio_free(S3C2410_GPF(2));
+}
+
+static char *h1940_supplicants[] = {
+        "main-battery",
+        "backup-battery",
+};
+
+static struct pda_power_pdata power_supply_info = {
+        .init                   = power_supply_init,
+        .is_ac_online           = h1940_is_ac_online,
+        .exit                   = power_supply_exit,
+        .supplied_to            = h1940_supplicants,
+        .num_supplicants        = ARRAY_SIZE(h1940_supplicants),
+};
+
+static struct resource power_supply_resources[] = {
+        [0] = {
+                        .name   = "ac",
+                        .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE |
+                                          IORESOURCE_IRQ_HIGHEDGE,
+                        .start  = IRQ_EINT2,
+                        .end    = IRQ_EINT2,
+        },
+};
+
+static struct platform_device power_supply = {
+        .name           = "pda-power",
+        .id             = -1,
+        .dev            = {
+                                .platform_data =
+                                        &power_supply_info,
+        },
+        .resource       = power_supply_resources,
+        .num_resources  = ARRAY_SIZE(power_supply_resources),
+};
+
+static const struct s3c_adc_bat_thresh bat_lut_noac[] = {
+        { .volt = 4070, .cur = 162, .level = 100},
+        { .volt = 4040, .cur = 165, .level = 95},
+        { .volt = 4016, .cur = 164, .level = 90},
+        { .volt = 3996, .cur = 166, .level = 85},
+        { .volt = 3971, .cur = 168, .level = 80},
+        { .volt = 3951, .cur = 168, .level = 75},
+        { .volt = 3931, .cur = 170, .level = 70},
+        { .volt = 3903, .cur = 172, .level = 65},
+        { .volt = 3886, .cur = 172, .level = 60},
+        { .volt = 3858, .cur = 176, .level = 55},
+        { .volt = 3842, .cur = 176, .level = 50},
+        { .volt = 3818, .cur = 176, .level = 45},
+        { .volt = 3789, .cur = 180, .level = 40},
+        { .volt = 3769, .cur = 180, .level = 35},
+        { .volt = 3749, .cur = 184, .level = 30},
+        { .volt = 3732, .cur = 184, .level = 25},
+        { .volt = 3716, .cur = 184, .level = 20},
+        { .volt = 3708, .cur = 184, .level = 15},
+        { .volt = 3716, .cur = 96, .level = 10},
+        { .volt = 3700, .cur = 96, .level = 5},
+        { .volt = 3684, .cur = 96, .level = 0},
+};
+
+static const struct s3c_adc_bat_thresh bat_lut_acin[] = {
+        { .volt = 4130, .cur = 0, .level = 100},
+        { .volt = 3982, .cur = 0, .level = 50},
+        { .volt = 3854, .cur = 0, .level = 10},
+        { .volt = 3841, .cur = 0, .level = 0},
+};
+
+int h1940_bat_init(void)
+{
+        int ret;
+
+        ret = gpio_request(H1940_LATCH_SM803_ENABLE, "h1940-charger-enable");
+        if (ret)
+                return ret;
+        gpio_direction_output(H1940_LATCH_SM803_ENABLE, 0);
+
+        return 0;
+
+}
+
+void h1940_bat_exit(void)
+{
+        gpio_free(H1940_LATCH_SM803_ENABLE);
+}
+
+void h1940_enable_charger(void)
+{
+        gpio_set_value(H1940_LATCH_SM803_ENABLE, 1);
+}
+
+void h1940_disable_charger(void)
+{
+        gpio_set_value(H1940_LATCH_SM803_ENABLE, 0);
+}
+
+static struct s3c_adc_bat_pdata h1940_bat_cfg = {
+        .init = h1940_bat_init,
+        .exit = h1940_bat_exit,
+        .enable_charger = h1940_enable_charger,
+        .disable_charger = h1940_disable_charger,
+        .gpio_charge_finished = S3C2410_GPF(3),
+        .gpio_inverted = 1,
+        .lut_noac = bat_lut_noac,
+        .lut_noac_cnt = ARRAY_SIZE(bat_lut_noac),
+        .lut_acin = bat_lut_acin,
+        .lut_acin_cnt = ARRAY_SIZE(bat_lut_acin),
+        .volt_channel = 0,
+        .current_channel = 1,
+        .volt_mult = 4056,
+        .current_mult = 1893,
+        .internal_impedance = 200,
+        .backup_volt_channel = 3,
+        /* TODO Check backup volt multiplier */
+        .backup_volt_mult = 4056,
+        .backup_volt_min = 0,
+        .backup_volt_max = 4149288
+};
+
+static struct platform_device h1940_battery = {
+        .name             = "s3c-adc-battery",
         .id               = -1,
+        .dev = {
+                .parent = &s3c_device_adc.dev,
+                .platform_data = &h1940_bat_cfg,
+        },
+};
+
+DEFINE_SPINLOCK(h1940_blink_spin);
+
+int h1940_led_blink_set(unsigned gpio, int state,
+        unsigned long *delay_on, unsigned long *delay_off)
+{
+        int blink_gpio, check_gpio1, check_gpio2;
+
+        switch (gpio) {
+        case H1940_LATCH_LED_GREEN:
+                blink_gpio = S3C2410_GPA(7);
+                check_gpio1 = S3C2410_GPA(1);
+                check_gpio2 = S3C2410_GPA(3);
+                break;
+        case H1940_LATCH_LED_RED:
+                blink_gpio = S3C2410_GPA(1);
+                check_gpio1 = S3C2410_GPA(7);
+                check_gpio2 = S3C2410_GPA(3);
+                break;
+        default:
+                blink_gpio = S3C2410_GPA(3);
+                check_gpio1 = S3C2410_GPA(1);
+                check_gpio1 = S3C2410_GPA(7);
+                break;
+        }
+
+        if (delay_on && delay_off && !*delay_on && !*delay_off)
+                *delay_on = *delay_off = 500;
+
+        spin_lock(&h1940_blink_spin);
+
+        switch (state) {
+        case GPIO_LED_NO_BLINK_LOW:
+        case GPIO_LED_NO_BLINK_HIGH:
+                if (!gpio_get_value(check_gpio1) &&
+                    !gpio_get_value(check_gpio2))
+                        gpio_set_value(H1940_LATCH_LED_FLASH, 0);
+                gpio_set_value(blink_gpio, 0);
+                if (gpio_is_valid(gpio))
+                        gpio_set_value(gpio, state);
+                break;
+        case GPIO_LED_BLINK:
+                if (gpio_is_valid(gpio))
+                        gpio_set_value(gpio, 0);
+                gpio_set_value(H1940_LATCH_LED_FLASH, 1);
+                gpio_set_value(blink_gpio, 1);
+                break;
+        }
+
+        spin_unlock(&h1940_blink_spin);
+
+        return 0;
+}
+EXPORT_SYMBOL(h1940_led_blink_set);
+
+static struct gpio_led h1940_leds_desc[] = {
+        {
+                .name                   = "Green",
+                .default_trigger        = "main-battery-full",
+                .gpio                   = H1940_LATCH_LED_GREEN,
+                .retain_state_suspended = 1,
+        },
+        {
+                .name                   = "Red",
+                .default_trigger
+                        = "main-battery-charging-blink-full-solid",
+                .gpio                   = H1940_LATCH_LED_RED,
+                .retain_state_suspended = 1,
+        },
+};
+
+static struct gpio_led_platform_data h1940_leds_pdata = {
+        .num_leds       = ARRAY_SIZE(h1940_leds_desc),
+        .leds           = h1940_leds_desc,
+        .gpio_blink_set = h1940_led_blink_set,
+};
+
+static struct platform_device h1940_device_leds = {
+        .name   = "leds-gpio",
+        .id     = -1,
+        .dev    = {
+                        .platform_data = &h1940_leds_pdata,
+        },
 };
 
 static struct platform_device h1940_device_bluetooth = {
@@ -302,14 +528,14 @@ static struct platform_device h1940_backlight = {
 static void h1940_lcd_power_set(struct plat_lcd_data *pd,
                                         unsigned int power)
 {
-        int value;
+        int value, retries = 100;
 
         if (!power) {
                 gpio_set_value(S3C2410_GPC(0), 0);
                 /* wait for 3ac */
                 do {
                         value = gpio_get_value(S3C2410_GPC(6));
-                } while (value);
+                } while (value && retries--);
 
                 gpio_set_value(H1940_LATCH_LCD_P2, 0);
                 gpio_set_value(H1940_LATCH_LCD_P3, 0);
@@ -327,6 +553,9 @@ static void h1940_lcd_power_set(struct plat_lcd_data *pd,
                 gpio_set_value(H1940_LATCH_LCD_P0, 1);
                 gpio_set_value(H1940_LATCH_LCD_P1, 1);
 
+                gpio_direction_input(S3C2410_GPC(1));
+                gpio_direction_input(S3C2410_GPC(4));
+                mdelay(10);
                 s3c_gpio_cfgpin(S3C2410_GPC(1), S3C_GPIO_SFN(2));
                 s3c_gpio_cfgpin(S3C2410_GPC(4), S3C_GPIO_SFN(2));
 
@@ -362,7 +591,44 @@ static struct i2c_board_info h1940_i2c_devices[] = {
         },
 };
 
+#define DECLARE_BUTTON(p, k, n, w)      \
+        {                               \
+                .gpio           = p,    \
+                .code           = k,    \
+                .desc           = n,    \
+                .wakeup         = w,    \
+                .active_low     = 1,    \
+        }
+
+static struct gpio_keys_button h1940_buttons[] = {
+        DECLARE_BUTTON(S3C2410_GPF(0),       KEY_POWER,          "Power", 1),
+        DECLARE_BUTTON(S3C2410_GPF(6),       KEY_ENTER,         "Select", 1),
+        DECLARE_BUTTON(S3C2410_GPF(7),      KEY_RECORD,         "Record", 0),
+        DECLARE_BUTTON(S3C2410_GPG(0),         KEY_F11,       "Calendar", 0),
+        DECLARE_BUTTON(S3C2410_GPG(2),         KEY_F12,       "Contacts", 0),
+        DECLARE_BUTTON(S3C2410_GPG(3),        KEY_MAIL,           "Mail", 0),
+        DECLARE_BUTTON(S3C2410_GPG(6),        KEY_LEFT,     "Left_arrow", 0),
+        DECLARE_BUTTON(S3C2410_GPG(7),    KEY_HOMEPAGE,           "Home", 0),
+        DECLARE_BUTTON(S3C2410_GPG(8),       KEY_RIGHT,    "Right_arrow", 0),
+        DECLARE_BUTTON(S3C2410_GPG(9),          KEY_UP,       "Up_arrow", 0),
+        DECLARE_BUTTON(S3C2410_GPG(10),       KEY_DOWN,     "Down_arrow", 0),
+};
+
+static struct gpio_keys_platform_data h1940_buttons_data = {
+        .buttons        = h1940_buttons,
+        .nbuttons       = ARRAY_SIZE(h1940_buttons),
+};
+
+static struct platform_device h1940_dev_buttons = {
+        .name           = "gpio-keys",
+        .id             = -1,
+        .dev            = {
+                .platform_data  = &h1940_buttons_data,
+        }
+};
+
 static struct platform_device *h1940_devices[] __initdata = {
+        &h1940_dev_buttons,
         &s3c_device_ohci,
         &s3c_device_lcd,
         &s3c_device_wdt,
@@ -379,6 +645,8 @@ static struct platform_device *h1940_devices[] __initdata = {
         &h1940_lcd_powerdev,
         &s3c_device_adc,
         &s3c_device_ts,
+        &power_supply,
+        &h1940_battery,
 };
 
 static void __init h1940_map_io(void)
@@ -461,6 +729,15 @@ static void __init h1940_init(void)
 
         platform_add_devices(h1940_devices, ARRAY_SIZE(h1940_devices));
 
+        gpio_request(S3C2410_GPA(1), "Red LED blink");
+        gpio_request(S3C2410_GPA(3), "Blue LED blink");
+        gpio_request(S3C2410_GPA(7), "Green LED blink");
+        gpio_request(H1940_LATCH_LED_FLASH, "LED blink");
+        gpio_direction_output(S3C2410_GPA(1), 0);
+        gpio_direction_output(S3C2410_GPA(3), 0);
+        gpio_direction_output(S3C2410_GPA(7), 0);
+        gpio_direction_output(H1940_LATCH_LED_FLASH, 0);
+
         i2c_register_board_info(0, h1940_i2c_devices,
                 ARRAY_SIZE(h1940_i2c_devices));
 }
diff --git a/arch/arm/mach-s3c2440/mach-mini2440.c b/arch/arm/mach-s3c2440/mach-mini2440.c
index d80f129bca94..dfedc9c9e005 100644
--- a/arch/arm/mach-s3c2440/mach-mini2440.c
+++ b/arch/arm/mach-s3c2440/mach-mini2440.c
@@ -488,6 +488,11 @@ static struct i2c_board_info mini2440_i2c_devs[] __initdata = {
         },
 };
 
+static struct platform_device uda1340_codec = {
+                .name = "uda134x-codec",
+                .id = -1,
+};
+
 static struct platform_device *mini2440_devices[] __initdata = {
         &s3c_device_ohci,
         &s3c_device_wdt,
@@ -503,7 +508,9 @@ static struct platform_device *mini2440_devices[] __initdata = {
         &s3c_device_nand,
         &s3c_device_sdi,
         &s3c_device_iis,
+        &uda1340_codec,
         &mini2440_audio,
+        &samsung_asoc_dma,
 };
 
 static void __init mini2440_map_io(void)
diff --git a/arch/arm/mach-s3c2440/mach-rx1950.c b/arch/arm/mach-s3c2440/mach-rx1950.c
index 86bbc233b31c..27ea95096fe1 100644
--- a/arch/arm/mach-s3c2440/mach-rx1950.c
+++ b/arch/arm/mach-s3c2440/mach-rx1950.c
@@ -263,27 +263,78 @@ void rx1950_disable_charger(void)
         gpio_direction_output(S3C2410_GPJ(3), 0);
 }
 
+DEFINE_SPINLOCK(rx1950_blink_spin);
+
+static int rx1950_led_blink_set(unsigned gpio, int state,
+        unsigned long *delay_on, unsigned long *delay_off)
+{
+        int blink_gpio, check_gpio;
+
+        switch (gpio) {
+        case S3C2410_GPA(6):
+                blink_gpio = S3C2410_GPA(4);
+                check_gpio = S3C2410_GPA(3);
+                break;
+        case S3C2410_GPA(7):
+                blink_gpio = S3C2410_GPA(3);
+                check_gpio = S3C2410_GPA(4);
+                break;
+        default:
+                return -EINVAL;
+                break;
+        }
+
+        if (delay_on && delay_off && !*delay_on && !*delay_off)
+                *delay_on = *delay_off = 500;
+
+        spin_lock(&rx1950_blink_spin);
+
+        switch (state) {
+        case GPIO_LED_NO_BLINK_LOW:
+        case GPIO_LED_NO_BLINK_HIGH:
+                if (!gpio_get_value(check_gpio))
+                        gpio_set_value(S3C2410_GPJ(6), 0);
+                gpio_set_value(blink_gpio, 0);
+                gpio_set_value(gpio, state);
+                break;
+        case GPIO_LED_BLINK:
+                gpio_set_value(gpio, 0);
+                gpio_set_value(S3C2410_GPJ(6), 1);
+                gpio_set_value(blink_gpio, 1);
+                break;
+        }
+
+        spin_unlock(&rx1950_blink_spin);
+
+        return 0;
+}
+
 static struct gpio_led rx1950_leds_desc[] = {
         {
-                .name                           = "Green",
-                .default_trigger        = "main-battery-charging-or-full",
-                .gpio                           = S3C2410_GPA(6),
+                .name                   = "Green",
+                .default_trigger        = "main-battery-full",
+                .gpio                   = S3C2410_GPA(6),
+                .retain_state_suspended = 1,
         },
         {
-                .name                           = "Red",
-                .default_trigger        = "main-battery-full",
-                .gpio                           = S3C2410_GPA(7),
+                .name                   = "Red",
+                .default_trigger
+                        = "main-battery-charging-blink-full-solid",
+                .gpio                   = S3C2410_GPA(7),
+                .retain_state_suspended = 1,
         },
         {
-                .name                           = "Blue",
+                .name                   = "Blue",
                 .default_trigger        = "rx1950-acx-mem",
-                .gpio                           = S3C2410_GPA(11),
+                .gpio                   = S3C2410_GPA(11),
+                .retain_state_suspended = 1,
         },
 };
 
 static struct gpio_led_platform_data rx1950_leds_pdata = {
         .num_leds       = ARRAY_SIZE(rx1950_leds_desc),
         .leds           = rx1950_leds_desc,
+        .gpio_blink_set = rx1950_led_blink_set,
 };
 
 static struct platform_device rx1950_leds = {
@@ -752,6 +803,13 @@ static void __init rx1950_init_machine(void)
 
         WARN_ON(gpio_request(S3C2410_GPB(1), "LCD power"));
 
+        WARN_ON(gpio_request(S3C2410_GPA(3), "Red blink"));
+        WARN_ON(gpio_request(S3C2410_GPA(4), "Green blink"));
+        WARN_ON(gpio_request(S3C2410_GPJ(6), "LED blink"));
+        gpio_direction_output(S3C2410_GPA(3), 0);
+        gpio_direction_output(S3C2410_GPA(4), 0);
+        gpio_direction_output(S3C2410_GPJ(6), 0);
+
         platform_add_devices(rx1950_devices, ARRAY_SIZE(rx1950_devices));
 
         i2c_register_board_info(0, rx1950_i2c_devices,
diff --git a/arch/arm/plat-nomadik/include/plat/ste_dma40.h b/arch/arm/plat-nomadik/include/plat/ste_dma40.h
index 4d6dd4c39b75..c44886062f8e 100644
--- a/arch/arm/plat-nomadik/include/plat/ste_dma40.h
+++ b/arch/arm/plat-nomadik/include/plat/ste_dma40.h
@@ -104,6 +104,8 @@ struct stedma40_half_channel_info {
  *
  * @dir: MEM 2 MEM, PERIPH 2 MEM , MEM 2 PERIPH, PERIPH 2 PERIPH
  * @high_priority: true if high-priority
+ * @realtime: true if realtime mode is to be enabled.  Only available on DMA40
+ * version 3+, i.e DB8500v2+
  * @mode: channel mode: physical, logical, or operation
  * @mode_opt: options for the chosen channel mode
  * @src_dev_type: Src device type
@@ -119,6 +121,7 @@ struct stedma40_half_channel_info {
 struct stedma40_chan_cfg {
         enum stedma40_xfer_dir                   dir;
         bool                                     high_priority;
+        bool                                     realtime;
         enum stedma40_mode                       mode;
         enum stedma40_mode_opt                   mode_opt;
         int                                      src_dev_type;
@@ -169,25 +172,6 @@ struct stedma40_platform_data {
 bool stedma40_filter(struct dma_chan *chan, void *data);
 
 /**
- * stedma40_memcpy_sg() - extension of the dma framework, memcpy to/from
- * scattergatter lists.
- *
- * @chan: dmaengine handle
- * @sgl_dst: Destination scatter list
- * @sgl_src: Source scatter list
- * @sgl_len: The length of each scatterlist. Both lists must be of equal length
- * and each element must match the corresponding element in the other scatter
- * list.
- * @flags: is actually enum dma_ctrl_flags. See dmaengine.h
- */
-
-struct dma_async_tx_descriptor *stedma40_memcpy_sg(struct dma_chan *chan,
-                                                   struct scatterlist *sgl_dst,
-                                                   struct scatterlist *sgl_src,
-                                                   unsigned int sgl_len,
-                                                   unsigned long flags);
-
-/**
  * stedma40_slave_mem() - Transfers a raw data buffer to or from a slave
  * (=device)
  *
diff --git a/arch/avr32/include/asm/types.h b/arch/avr32/include/asm/types.h
index 9cefda6f534a..72667a3b1af7 100644
--- a/arch/avr32/include/asm/types.h
+++ b/arch/avr32/include/asm/types.h
@@ -23,14 +23,6 @@ typedef unsigned short umode_t;
 
 #define BITS_PER_LONG 32
 
-#ifndef __ASSEMBLY__
-
-/* Dma addresses are 32-bits wide.  */
-
-typedef u32 dma_addr_t;
-
-#endif /* __ASSEMBLY__ */
-
 #endif /* __KERNEL__ */
 
 
diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
index e67c99945428..bfc9d071db9b 100644
--- a/arch/avr32/mach-at32ap/at32ap700x.c
+++ b/arch/avr32/mach-at32ap/at32ap700x.c
@@ -2048,6 +2048,11 @@ at32_add_device_ac97c(unsigned int id, struct ac97c_platform_data *data,
                 rx_dws->reg_width = DW_DMA_SLAVE_WIDTH_16BIT;
                 rx_dws->cfg_hi = DWC_CFGH_SRC_PER(3);
                 rx_dws->cfg_lo &= ~(DWC_CFGL_HS_DST_POL | DWC_CFGL_HS_SRC_POL);
+                rx_dws->src_master = 0;
+                rx_dws->dst_master = 1;
+                rx_dws->src_msize = DW_DMA_MSIZE_1;
+                rx_dws->dst_msize = DW_DMA_MSIZE_1;
+                rx_dws->fc = DW_DMA_FC_D_P2M;
         }
 
         /* Check if DMA slave interface for playback should be configured. */
@@ -2056,6 +2061,11 @@ at32_add_device_ac97c(unsigned int id, struct ac97c_platform_data *data,
                 tx_dws->reg_width = DW_DMA_SLAVE_WIDTH_16BIT;
                 tx_dws->cfg_hi = DWC_CFGH_DST_PER(4);
                 tx_dws->cfg_lo &= ~(DWC_CFGL_HS_DST_POL | DWC_CFGL_HS_SRC_POL);
+                tx_dws->src_master = 0;
+                tx_dws->dst_master = 1;
+                tx_dws->src_msize = DW_DMA_MSIZE_1;
+                tx_dws->dst_msize = DW_DMA_MSIZE_1;
+                tx_dws->fc = DW_DMA_FC_D_M2P;
         }
 
         if (platform_device_add_data(pdev, data,
@@ -2128,6 +2138,11 @@ at32_add_device_abdac(unsigned int id, struct atmel_abdac_pdata *data)
         dws->reg_width = DW_DMA_SLAVE_WIDTH_32BIT;
         dws->cfg_hi = DWC_CFGH_DST_PER(2);
         dws->cfg_lo &= ~(DWC_CFGL_HS_DST_POL | DWC_CFGL_HS_SRC_POL);
+        dws->src_master = 0;
+        dws->dst_master = 1;
+        dws->src_msize = DW_DMA_MSIZE_1;
+        dws->dst_msize = DW_DMA_MSIZE_1;
+        dws->fc = DW_DMA_FC_D_M2P;
 
         if (platform_device_add_data(pdev, data,
                                 sizeof(struct atmel_abdac_pdata)))
diff --git a/arch/cris/include/asm/thread_info.h b/arch/cris/include/asm/thread_info.h
index 91776069ca80..29b74a105830 100644
--- a/arch/cris/include/asm/thread_info.h
+++ b/arch/cris/include/asm/thread_info.h
@@ -68,7 +68,7 @@ struct thread_info {
 #define init_thread_info        (init_thread_union.thread_info)
 
 /* thread information allocation */
-#define alloc_thread_info(tsk) ((struct thread_info *) __get_free_pages(GFP_KERNEL,1))
+#define alloc_thread_info(tsk, node) ((struct thread_info *) __get_free_pages(GFP_KERNEL,1))
 #define free_thread_info(ti) free_pages((unsigned long) (ti), 1)
 
 #endif /* !__ASSEMBLY__ */
diff --git a/arch/cris/include/asm/types.h b/arch/cris/include/asm/types.h
index 5790262cbe8a..44055087c932 100644
--- a/arch/cris/include/asm/types.h
+++ b/arch/cris/include/asm/types.h
@@ -18,9 +18,6 @@ typedef unsigned short umode_t;
 
 #ifndef __ASSEMBLY__
 
-/* Dma addresses are 32-bits wide, just like our other addresses.  */
- 
-typedef u32 dma_addr_t;
 typedef u32 dma64_addr_t;
 
 #endif /* __ASSEMBLY__ */
diff --git a/arch/frv/include/asm/processor.h b/arch/frv/include/asm/processor.h
index 3744f2e47f48..4b789ab182b0 100644
--- a/arch/frv/include/asm/processor.h
+++ b/arch/frv/include/asm/processor.h
@@ -137,7 +137,7 @@ unsigned long get_wchan(struct task_struct *p);
 #define KSTK_ESP(tsk)   ((tsk)->thread.frame0->sp)
 
 /* Allocation and freeing of basic task resources. */
-extern struct task_struct *alloc_task_struct(void);
+extern struct task_struct *alloc_task_struct_node(int node);
 extern void free_task_struct(struct task_struct *p);
 
 #define cpu_relax()    barrier()
diff --git a/arch/frv/include/asm/thread_info.h b/arch/frv/include/asm/thread_info.h
index 11f33ead29bf..8582e9c7531c 100644
--- a/arch/frv/include/asm/thread_info.h
+++ b/arch/frv/include/asm/thread_info.h
@@ -84,16 +84,11 @@ register struct thread_info *__current_thread_info asm("gr15");
 
 /* thread information allocation */
 #ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info(tsk)                                  \
-        ({                                                      \
-                struct thread_info *ret;                        \
-                                                                \
-                ret = kzalloc(THREAD_SIZE, GFP_KERNEL);         \
-                                                                \
-                ret;                                            \
-        })
+#define alloc_thread_info_node(tsk, node)                       \
+                kzalloc_node(THREAD_SIZE, GFP_KERNEL, node)
 #else
-#define alloc_thread_info(tsk)  kmalloc(THREAD_SIZE, GFP_KERNEL)
+#define alloc_thread_info_node(tsk)                             \
+                kmalloc_node(THREAD_SIZE, GFP_KERNEL, node)
 #endif
 
 #define free_thread_info(info)  kfree(info)
diff --git a/arch/frv/include/asm/types.h b/arch/frv/include/asm/types.h
index 613bf1e962f0..aa3e7fdc7f29 100644
--- a/arch/frv/include/asm/types.h
+++ b/arch/frv/include/asm/types.h
@@ -27,14 +27,6 @@ typedef unsigned short umode_t;
 
 #define BITS_PER_LONG 32
 
-#ifndef __ASSEMBLY__
-
-/* Dma addresses are 32-bits wide.  */
-
-typedef u32 dma_addr_t;
-
-#endif /* __ASSEMBLY__ */
-
 #endif /* __KERNEL__ */
 
 #endif /* _ASM_TYPES_H */
diff --git a/arch/frv/kernel/process.c b/arch/frv/kernel/process.c
index efad12071c2e..9d3597526467 100644
--- a/arch/frv/kernel/process.c
+++ b/arch/frv/kernel/process.c
@@ -44,9 +44,10 @@ asmlinkage void ret_from_fork(void);
 void (*pm_power_off)(void);
 EXPORT_SYMBOL(pm_power_off);
 
-struct task_struct *alloc_task_struct(void)
+struct task_struct *alloc_task_struct_node(int node)
 {
-        struct task_struct *p = kmalloc(THREAD_SIZE, GFP_KERNEL);
+        struct task_struct *p = kmalloc_node(THREAD_SIZE, GFP_KERNEL, node);
+
         if (p)
                 atomic_set((atomic_t *)(p+1), 1);
         return p;
diff --git a/arch/h8300/include/asm/types.h b/arch/h8300/include/asm/types.h
index 12875190b156..bb2c91a3522e 100644
--- a/arch/h8300/include/asm/types.h
+++ b/arch/h8300/include/asm/types.h
@@ -22,10 +22,6 @@ typedef unsigned short umode_t;
 
 #define BITS_PER_LONG 32
 
-/* Dma addresses are 32-bits wide.  */
-
-typedef u32 dma_addr_t;
-
 #endif /* __KERNEL__ */
 
 #endif /* __ASSEMBLY__ */
diff --git a/arch/ia64/include/asm/thread_info.h b/arch/ia64/include/asm/thread_info.h
index b6a5ba2aca34..6392908e8f98 100644
--- a/arch/ia64/include/asm/thread_info.h
+++ b/arch/ia64/include/asm/thread_info.h
@@ -59,11 +59,12 @@ struct thread_info {
 #ifndef ASM_OFFSETS_C
 /* how to get the thread information struct from C */
 #define current_thread_info()   ((struct thread_info *) ((char *) current + IA64_TASK_SIZE))
-#define alloc_thread_info(tsk)  ((struct thread_info *) ((char *) (tsk) + IA64_TASK_SIZE))
+#define alloc_thread_info_node(tsk, node)       \
+                ((struct thread_info *) ((char *) (tsk) + IA64_TASK_SIZE))
 #define task_thread_info(tsk)   ((struct thread_info *) ((char *) (tsk) + IA64_TASK_SIZE))
 #else
 #define current_thread_info()   ((struct thread_info *) 0)
-#define alloc_thread_info(tsk)  ((struct thread_info *) 0)
+#define alloc_thread_info_node(tsk, node)       ((struct thread_info *) 0)
 #define task_thread_info(tsk)   ((struct thread_info *) 0)
 #endif
 #define free_thread_info(ti)    /* nothing */
@@ -84,7 +85,14 @@ struct thread_info {
 #define end_of_stack(p) (unsigned long *)((void *)(p) + IA64_RBS_OFFSET)
 
 #define __HAVE_ARCH_TASK_STRUCT_ALLOCATOR
-#define alloc_task_struct()     ((struct task_struct *)__get_free_pages(GFP_KERNEL | __GFP_COMP, KERNEL_STACK_SIZE_ORDER))
+#define alloc_task_struct_node(node)                                            \
+({                                                                              \
+        struct page *page = alloc_pages_node(node, GFP_KERNEL | __GFP_COMP,     \
+                                             KERNEL_STACK_SIZE_ORDER);          \
+        struct task_struct *ret = page ? page_address(page) : NULL;             \
+                                                                                \
+        ret;
+})
 #define free_task_struct(tsk)   free_pages((unsigned long) (tsk), KERNEL_STACK_SIZE_ORDER)
 
 #endif /* !__ASSEMBLY */
diff --git a/arch/ia64/include/asm/types.h b/arch/ia64/include/asm/types.h
index 93773fd37be0..82b3939d2718 100644
--- a/arch/ia64/include/asm/types.h
+++ b/arch/ia64/include/asm/types.h
@@ -40,9 +40,6 @@ struct fnptr {
         unsigned long gp;
 };
 
-/* DMA addresses are 64-bits wide, in general.  */
-typedef u64 dma_addr_t;
-
 # endif /* __KERNEL__ */
 #endif /* !__ASSEMBLY__ */
 
diff --git a/arch/m32r/include/asm/thread_info.h b/arch/m32r/include/asm/thread_info.h
index 71faff5bcc27..0227dba44068 100644
--- a/arch/m32r/include/asm/thread_info.h
+++ b/arch/m32r/include/asm/thread_info.h
@@ -96,16 +96,11 @@ static inline struct thread_info *current_thread_info(void)
 
 /* thread information allocation */
 #ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info(tsk)                                  \
-        ({                                                      \
-                struct thread_info *ret;                        \
-                                                                \
-                ret = kzalloc(THREAD_SIZE, GFP_KERNEL);         \
-                                                                \
-                ret;                                            \
-         })
+#define alloc_thread_info_node(tsk, node)                       \
+                kzalloc_node(THREAD_SIZE, GFP_KERNEL, node)
 #else
-#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL)
+#define alloc_thread_info_node(tsk, node)                       \
+                kmalloc_node(THREAD_SIZE, GFP_KERNEL, node)
 #endif
 
 #define free_thread_info(info) kfree(info)
diff --git a/arch/m32r/include/asm/types.h b/arch/m32r/include/asm/types.h
index bc9f7fff0ac3..fd84b4898e30 100644
--- a/arch/m32r/include/asm/types.h
+++ b/arch/m32r/include/asm/types.h
@@ -18,9 +18,6 @@ typedef unsigned short umode_t;
 
 #ifndef __ASSEMBLY__
 
-/* DMA addresses are 32-bits wide.  */
-
-typedef u32 dma_addr_t;
 typedef u64 dma64_addr_t;
 
 #endif /* __ASSEMBLY__ */
diff --git a/arch/m68k/include/asm/types.h b/arch/m68k/include/asm/types.h
index 6441cb5f8e7c..10ad92f1c173 100644
--- a/arch/m68k/include/asm/types.h
+++ b/arch/m68k/include/asm/types.h
@@ -25,9 +25,6 @@ typedef unsigned short umode_t;
 
 #ifndef __ASSEMBLY__
 
-/* DMA addresses are always 32-bits wide */
-
-typedef u32 dma_addr_t;
 typedef u32 dma64_addr_t;
 
 #endif /* __ASSEMBLY__ */
diff --git a/arch/mips/include/asm/thread_info.h b/arch/mips/include/asm/thread_info.h
index d309556cacf8..d71160de4d10 100644
--- a/arch/mips/include/asm/thread_info.h
+++ b/arch/mips/include/asm/thread_info.h
@@ -88,9 +88,11 @@ register struct thread_info *__current_thread_info __asm__("$28");
 #define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
 
 #ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info(tsk) kzalloc(THREAD_SIZE, GFP_KERNEL)
+#define alloc_thread_info_node(tsk, node) \
+                kzalloc_node(THREAD_SIZE, GFP_KERNEL, node)
 #else
-#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL)
+#define alloc_thread_info_node(tsk, node) \
+                kmalloc_node(THREAD_SIZE, GFP_KERNEL, node)
 #endif
 
 #define free_thread_info(info) kfree(info)
diff --git a/arch/mips/include/asm/types.h b/arch/mips/include/asm/types.h
index 544a2854598f..9520dc894989 100644
--- a/arch/mips/include/asm/types.h
+++ b/arch/mips/include/asm/types.h
@@ -33,12 +33,6 @@ typedef unsigned short umode_t;
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__
 
-#if (defined(CONFIG_HIGHMEM) && defined(CONFIG_64BIT_PHYS_ADDR)) \
-    || defined(CONFIG_64BIT)
-typedef u64 dma_addr_t;
-#else
-typedef u32 dma_addr_t;
-#endif
 typedef u64 dma64_addr_t;
 
 /*
diff --git a/arch/mn10300/include/asm/thread_info.h b/arch/mn10300/include/asm/thread_info.h
index aa07a4a5d794..8d53f09c878d 100644
--- a/arch/mn10300/include/asm/thread_info.h
+++ b/arch/mn10300/include/asm/thread_info.h
@@ -124,9 +124,11 @@ static inline unsigned long current_stack_pointer(void)
 
 /* thread information allocation */
 #ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info(tsk) kzalloc(THREAD_SIZE, GFP_KERNEL)
+#define alloc_thread_info_node(tsk, node)                       \
+                kzalloc_node(THREAD_SIZE, GFP_KERNEL, node)
 #else
-#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL)
+#define alloc_thread_info_node(tsk, node)                       \
+                kmalloc_node(THREAD_SIZE, GFP_KERNEL, node)
 #endif
 
 #define free_thread_info(ti)    kfree((ti))
diff --git a/arch/mn10300/include/asm/types.h b/arch/mn10300/include/asm/types.h
index 7b9f01042fd4..c1833eb192e3 100644
--- a/arch/mn10300/include/asm/types.h
+++ b/arch/mn10300/include/asm/types.h
@@ -26,13 +26,6 @@ typedef unsigned short umode_t;
 
 #define BITS_PER_LONG 32
 
-#ifndef __ASSEMBLY__
-
-/* Dma addresses are 32-bits wide.  */
-typedef u32 dma_addr_t;
-
-#endif /* __ASSEMBLY__ */
-
 #endif /* __KERNEL__ */
 
 #endif /* _ASM_TYPES_H */
diff --git a/arch/parisc/include/asm/types.h b/arch/parisc/include/asm/types.h
index 20135cc80039..bc164ddffb78 100644
--- a/arch/parisc/include/asm/types.h
+++ b/arch/parisc/include/asm/types.h
@@ -16,9 +16,6 @@ typedef unsigned short umode_t;
 
 #ifndef __ASSEMBLY__
 
-/* Dma addresses are 32-bits wide.  */
-
-typedef u32 dma_addr_t;
 typedef u64 dma64_addr_t;
 
 #endif /* __ASSEMBLY__ */
diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h
index 65eb85976a03..d8529ef13b23 100644
--- a/arch/powerpc/include/asm/thread_info.h
+++ b/arch/powerpc/include/asm/thread_info.h
@@ -72,7 +72,7 @@ struct thread_info {
 
 #define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
 
-extern struct thread_info *alloc_thread_info(struct task_struct *tsk);
+extern struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node);
 extern void free_thread_info(struct thread_info *ti);
 
 #endif /* THREAD_SHIFT < PAGE_SHIFT */
diff --git a/arch/powerpc/include/asm/types.h b/arch/powerpc/include/asm/types.h
index a5aea0ca34e9..e16a6b2d96f1 100644
--- a/arch/powerpc/include/asm/types.h
+++ b/arch/powerpc/include/asm/types.h
@@ -44,11 +44,6 @@ typedef struct {
 
 typedef __vector128 vector128;
 
-#if defined(__powerpc64__) || defined(CONFIG_PHYS_64BIT)
-typedef u64 dma_addr_t;
-#else
-typedef u32 dma_addr_t;
-#endif
 typedef u64 dma64_addr_t;
 
 typedef struct {
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 8303a6c65ef7..f74f355a9617 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1218,11 +1218,11 @@ void __ppc64_runlatch_off(void)
 
 static struct kmem_cache *thread_info_cache;
 
-struct thread_info *alloc_thread_info(struct task_struct *tsk)
+struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node)
 {
         struct thread_info *ti;
 
-        ti = kmem_cache_alloc(thread_info_cache, GFP_KERNEL);
+        ti = kmem_cache_alloc_node(thread_info_cache, GFP_KERNEL, node);
         if (unlikely(ti == NULL))
                 return NULL;
 #ifdef CONFIG_DEBUG_STACK_USAGE
diff --git a/arch/s390/include/asm/types.h b/arch/s390/include/asm/types.h
index 04d6b95a89c6..f7f6ae6bed8f 100644
--- a/arch/s390/include/asm/types.h
+++ b/arch/s390/include/asm/types.h
@@ -31,12 +31,6 @@ typedef __signed__ long saddr_t;
 #ifndef __ASSEMBLY__
 
 typedef u64 dma64_addr_t;
-#ifdef __s390x__
-/* DMA addresses come in 32-bit and 64-bit flavours. */
-typedef u64 dma_addr_t;
-#else
-typedef u32 dma_addr_t;
-#endif
 
 #ifndef __s390x__
 typedef union {
diff --git a/arch/score/include/asm/thread_info.h b/arch/score/include/asm/thread_info.h
index 8570d08f58c1..2205c62284db 100644
--- a/arch/score/include/asm/thread_info.h
+++ b/arch/score/include/asm/thread_info.h
@@ -71,7 +71,7 @@ struct thread_info {
 register struct thread_info *__current_thread_info __asm__("r28");
 #define current_thread_info()   __current_thread_info
 
-#define alloc_thread_info(tsk) kmalloc(THREAD_SIZE, GFP_KERNEL)
+#define alloc_thread_info_node(tsk, node) kmalloc_node(THREAD_SIZE, GFP_KERNEL, node)
 #define free_thread_info(info) kfree(info)
 
 #endif /* !__ASSEMBLY__ */
diff --git a/arch/sh/include/asm/thread_info.h b/arch/sh/include/asm/thread_info.h
index c228946926ed..ea2d5089de1e 100644
--- a/arch/sh/include/asm/thread_info.h
+++ b/arch/sh/include/asm/thread_info.h
@@ -95,7 +95,7 @@ static inline struct thread_info *current_thread_info(void)
 
 #endif
 
-extern struct thread_info *alloc_thread_info(struct task_struct *tsk);
+extern struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node);
 extern void free_thread_info(struct thread_info *ti);
 extern void arch_task_cache_init(void);
 #define arch_task_cache_init arch_task_cache_init
diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c
index dcb126dc76fd..f39ad57296b7 100644
--- a/arch/sh/kernel/process.c
+++ b/arch/sh/kernel/process.c
@@ -32,16 +32,16 @@ void free_thread_xstate(struct task_struct *tsk)
 #if THREAD_SHIFT < PAGE_SHIFT
 static struct kmem_cache *thread_info_cache;
 
-struct thread_info *alloc_thread_info(struct task_struct *tsk)
+struct thread_info *alloc_thread_info(struct task_struct *tsk, int node)
 {
         struct thread_info *ti;
-
-        ti = kmem_cache_alloc(thread_info_cache, GFP_KERNEL);
-        if (unlikely(ti == NULL))
-                return NULL;
 #ifdef CONFIG_DEBUG_STACK_USAGE
-        memset(ti, 0, THREAD_SIZE);
+        gfp_t mask = GFP_KERNEL | __GFP_ZERO;
+#else
+        gfp_t mask = GFP_KERNEL;
 #endif
+
+        ti = kmem_cache_alloc_node(thread_info_cache, mask, node);
         return ti;
 }
 
@@ -64,7 +64,9 @@ struct thread_info *alloc_thread_info(struct task_struct *tsk)
 #else
         gfp_t mask = GFP_KERNEL;
 #endif
-        return (struct thread_info *)__get_free_pages(mask, THREAD_SIZE_ORDER);
+        struct page *page = alloc_pages_node(node, mask, THREAD_SIZE_ORDER);
+
+        return page ? page_address(page) : NULL;
 }
 
 void free_thread_info(struct thread_info *ti)
diff --git a/arch/sparc/include/asm/thread_info_32.h b/arch/sparc/include/asm/thread_info_32.h
index 9dd0318d3ddf..fa5753233410 100644
--- a/arch/sparc/include/asm/thread_info_32.h
+++ b/arch/sparc/include/asm/thread_info_32.h
@@ -82,8 +82,8 @@ register struct thread_info *current_thread_info_reg asm("g6");
 
 #define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
 
-BTFIXUPDEF_CALL(struct thread_info *, alloc_thread_info, void)
-#define alloc_thread_info(tsk) BTFIXUP_CALL(alloc_thread_info)()
+BTFIXUPDEF_CALL(struct thread_info *, alloc_thread_info_node, int)
+#define alloc_thread_info_node(tsk, node) BTFIXUP_CALL(alloc_thread_info_node)(node)
 
 BTFIXUPDEF_CALL(void, free_thread_info, struct thread_info *)
 #define free_thread_info(ti) BTFIXUP_CALL(free_thread_info)(ti)
@@ -92,7 +92,7 @@ BTFIXUPDEF_CALL(void, free_thread_info, struct thread_info *)
 
 /*
  * Size of kernel stack for each process.
- * Observe the order of get_free_pages() in alloc_thread_info().
+ * Observe the order of get_free_pages() in alloc_thread_info_node().
  * The sun4 has 8K stack too, because it's short on memory, and 16K is a waste.
  */
 #define THREAD_SIZE             8192
diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h
index fb2ea7705a46..60d86be1a533 100644
--- a/arch/sparc/include/asm/thread_info_64.h
+++ b/arch/sparc/include/asm/thread_info_64.h
@@ -146,21 +146,21 @@ register struct thread_info *current_thread_info_reg asm("g6");
 #define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
 
 #ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info(tsk)                                  \
-({                                                              \
-        struct thread_info *ret;                                \
-                                                                \
-        ret = (struct thread_info *)                            \
-          __get_free_pages(GFP_KERNEL, __THREAD_INFO_ORDER);    \
-        if (ret)                                                \
-                memset(ret, 0, PAGE_SIZE<<__THREAD_INFO_ORDER); \
-        ret;                                                    \
-})
+#define THREAD_FLAGS (GFP_KERNEL | __GFP_ZERO)
 #else
-#define alloc_thread_info(tsk) \
-        ((struct thread_info *)__get_free_pages(GFP_KERNEL, __THREAD_INFO_ORDER))
+#define THREAD_FLAGS (GFP_KERNEL)
 #endif
 
+#define alloc_thread_info_node(tsk, node)                               \
+({                                                                      \
+        struct page *page = alloc_pages_node(node, THREAD_FLAGS,        \
+                                             __THREAD_INFO_ORDER);      \
+        struct thread_info *ret;                                        \
+                                                                        \
+        ret = page ? page_address(page) : NULL;                         \
+        ret;                                                            \
+})
+
 #define free_thread_info(ti) \
         free_pages((unsigned long)(ti),__THREAD_INFO_ORDER)
 
diff --git a/arch/sparc/include/asm/types.h b/arch/sparc/include/asm/types.h
index 09c79a9c8516..f02d330cb9f1 100644
--- a/arch/sparc/include/asm/types.h
+++ b/arch/sparc/include/asm/types.h
@@ -22,10 +22,6 @@ typedef unsigned short umode_t;
 
 #ifndef __ASSEMBLY__
 
-/* Dma addresses come in generic and 64-bit flavours.  */
-
-typedef u32 dma_addr_t;
-
 #if defined(__arch64__)
 
 /*** SPARC 64 bit ***/
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
index 92319aa8b662..fe09fd8be695 100644
--- a/arch/sparc/mm/srmmu.c
+++ b/arch/sparc/mm/srmmu.c
@@ -650,7 +650,7 @@ static void srmmu_unmapiorange(unsigned long virt_addr, unsigned int len)
  * mappings on the kernel stack without any special code as we did
  * need on the sun4c.
  */
-static struct thread_info *srmmu_alloc_thread_info(void)
+static struct thread_info *srmmu_alloc_thread_info_node(int node)
 {
         struct thread_info *ret;
 
@@ -2271,7 +2271,7 @@ void __init ld_mmu_srmmu(void)
 
         BTFIXUPSET_CALL(mmu_info, srmmu_mmu_info, BTFIXUPCALL_NORM);
 
-        BTFIXUPSET_CALL(alloc_thread_info, srmmu_alloc_thread_info, BTFIXUPCALL_NORM);
+        BTFIXUPSET_CALL(alloc_thread_info_node, srmmu_alloc_thread_info_node, BTFIXUPCALL_NORM);
         BTFIXUPSET_CALL(free_thread_info, srmmu_free_thread_info, BTFIXUPCALL_NORM);
 
         BTFIXUPSET_CALL(pte_to_pgoff, srmmu_pte_to_pgoff, BTFIXUPCALL_NORM);
diff --git a/arch/sparc/mm/sun4c.c b/arch/sparc/mm/sun4c.c
index b5137cc2aba3..a2350b5e68aa 100644
--- a/arch/sparc/mm/sun4c.c
+++ b/arch/sparc/mm/sun4c.c
@@ -922,7 +922,7 @@ static inline void garbage_collect(int entry)
         free_locked_segment(BUCKET_ADDR(entry));
 }
 
-static struct thread_info *sun4c_alloc_thread_info(void)
+static struct thread_info *sun4c_alloc_thread_info_node(int node)
 {
         unsigned long addr, pages;
         int entry;
@@ -2155,7 +2155,7 @@ void __init ld_mmu_sun4c(void)
         BTFIXUPSET_CALL(__swp_offset, sun4c_swp_offset, BTFIXUPCALL_NORM);
         BTFIXUPSET_CALL(__swp_entry, sun4c_swp_entry, BTFIXUPCALL_NORM);
 
-        BTFIXUPSET_CALL(alloc_thread_info, sun4c_alloc_thread_info, BTFIXUPCALL_NORM);
+        BTFIXUPSET_CALL(alloc_thread_info_node, sun4c_alloc_thread_info_node, BTFIXUPCALL_NORM);
         BTFIXUPSET_CALL(free_thread_info, sun4c_free_thread_info, BTFIXUPCALL_NORM);
 
         BTFIXUPSET_CALL(mmu_info, sun4c_mmu_info, BTFIXUPCALL_NORM);
diff --git a/arch/tile/include/asm/thread_info.h b/arch/tile/include/asm/thread_info.h
index 9e8e9c4dfa2a..3405b52853b8 100644
--- a/arch/tile/include/asm/thread_info.h
+++ b/arch/tile/include/asm/thread_info.h
@@ -84,7 +84,7 @@ register unsigned long stack_pointer __asm__("sp");
   ((struct thread_info *)(stack_pointer & -THREAD_SIZE))
 
 #define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-extern struct thread_info *alloc_thread_info(struct task_struct *task);
+extern struct thread_info *alloc_thread_info_node(struct task_struct *task, int node);
 extern void free_thread_info(struct thread_info *info);
 
 /* Sit on a nap instruction until interrupted. */
diff --git a/arch/tile/kernel/process.c b/arch/tile/kernel/process.c
index b9cd962e1d30..d0065103eb7b 100644
--- a/arch/tile/kernel/process.c
+++ b/arch/tile/kernel/process.c
@@ -109,7 +109,7 @@ void cpu_idle(void)
         }
 }
 
-struct thread_info *alloc_thread_info(struct task_struct *task)
+struct thread_info *alloc_thread_info_node(struct task_struct *task, int node)
 {
         struct page *page;
         gfp_t flags = GFP_KERNEL;
@@ -118,7 +118,7 @@ struct thread_info *alloc_thread_info(struct task_struct *task)
         flags |= __GFP_ZERO;
 #endif
 
-        page = alloc_pages(flags, THREAD_SIZE_ORDER);
+        page = alloc_pages_node(node, flags, THREAD_SIZE_ORDER);
         if (!page)
                 return NULL;
 
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 050e4ddbbb65..35dd0b86401a 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -255,8 +255,8 @@ static const struct {
         { KDSIGACCEPT, KERN_INFO,  "KDSIGACCEPT" },
 };
 
-int line_ioctl(struct tty_struct *tty, struct file * file,
-               unsigned int cmd, unsigned long arg)
+int line_ioctl(struct tty_struct *tty, unsigned int cmd,
+                                unsigned long arg)
 {
         int ret;
         int i;
diff --git a/arch/um/include/asm/processor-generic.h b/arch/um/include/asm/processor-generic.h
index bed668824b5f..d1d1b0d8a0cd 100644
--- a/arch/um/include/asm/processor-generic.h
+++ b/arch/um/include/asm/processor-generic.h
@@ -66,7 +66,7 @@ struct thread_struct {
         .request                = { 0 } \
 }
 
-extern struct task_struct *alloc_task_struct(void);
+extern struct task_struct *alloc_task_struct_node(int node);
 
 static inline void release_thread(struct task_struct *task)
 {
diff --git a/arch/um/include/shared/line.h b/arch/um/include/shared/line.h
index 311a0d3d93af..72f4f25af247 100644
--- a/arch/um/include/shared/line.h
+++ b/arch/um/include/shared/line.h
@@ -77,8 +77,8 @@ extern int line_chars_in_buffer(struct tty_struct *tty);
 extern void line_flush_buffer(struct tty_struct *tty);
 extern void line_flush_chars(struct tty_struct *tty);
 extern int line_write_room(struct tty_struct *tty);
-extern int line_ioctl(struct tty_struct *tty, struct file * file,
-                      unsigned int cmd, unsigned long arg);
+extern int line_ioctl(struct tty_struct *tty, unsigned int cmd,
+                                unsigned long arg);
 extern void line_throttle(struct tty_struct *tty);
 extern void line_unthrottle(struct tty_struct *tty);
 
diff --git a/arch/um/sys-i386/asm/elf.h b/arch/um/sys-i386/asm/elf.h
index a979a22a8d9f..d964a4111ac6 100644
--- a/arch/um/sys-i386/asm/elf.h
+++ b/arch/um/sys-i386/asm/elf.h
@@ -75,6 +75,8 @@ typedef struct user_i387_struct elf_fpregset_t;
         pr_reg[16] = PT_REGS_SS(regs);          \
 } while (0);
 
+#define task_pt_regs(t) (&(t)->thread.regs)
+
 struct task_struct;
 
 extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
diff --git a/arch/um/sys-x86_64/asm/elf.h b/arch/um/sys-x86_64/asm/elf.h
index d760967f33a7..d6d5af376251 100644
--- a/arch/um/sys-x86_64/asm/elf.h
+++ b/arch/um/sys-x86_64/asm/elf.h
@@ -95,6 +95,8 @@ typedef struct user_i387_struct elf_fpregset_t;
         (pr_reg)[25] = 0;                                       \
         (pr_reg)[26] = 0;
 
+#define task_pt_regs(t) (&(t)->thread.regs)
+
 struct task_struct;
 
 extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index e1f65c46bc93..d57ddd7573cc 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -123,7 +123,7 @@ config NEED_SG_DMA_LENGTH
         def_bool y
 
 config GENERIC_ISA_DMA
-        def_bool y
+        def_bool ISA_DMA_API
 
 config GENERIC_IOMAP
         def_bool y
@@ -143,7 +143,7 @@ config GENERIC_GPIO
         bool
 
 config ARCH_MAY_HAVE_PC_FDC
-        def_bool y
+        def_bool ISA_DMA_API
 
 config RWSEM_GENERIC_SPINLOCK
         def_bool !X86_XADD
@@ -2002,9 +2002,13 @@ source "drivers/pci/pcie/Kconfig"
 
 source "drivers/pci/Kconfig"
 
-# x86_64 have no ISA slots, but do have ISA-style DMA.
+# x86_64 have no ISA slots, but can have ISA-style DMA.
 config ISA_DMA_API
-        def_bool y
+        bool "ISA-style DMA support" if (X86_64 && EXPERT)
+        default y
+        help
+          Enables ISA-style DMA support for devices requiring such controllers.
+          If unsure, say Y.
 
 if X86_32
 
diff --git a/arch/x86/include/asm/dma.h b/arch/x86/include/asm/dma.h
index ca1098a7e580..97b6d8114a43 100644
--- a/arch/x86/include/asm/dma.h
+++ b/arch/x86/include/asm/dma.h
@@ -151,6 +151,7 @@
 #define DMA_AUTOINIT            0x10
 
 
+#ifdef CONFIG_ISA_DMA_API
 extern spinlock_t  dma_spin_lock;
 
 static inline unsigned long claim_dma_lock(void)
@@ -164,6 +165,7 @@ static inline void release_dma_lock(unsigned long flags)
 {
         spin_unlock_irqrestore(&dma_spin_lock, flags);
 }
+#endif /* CONFIG_ISA_DMA_API */
 
 /* enable/disable a specific DMA channel */
 static inline void enable_dma(unsigned int dmanr)
@@ -303,9 +305,11 @@ static inline int get_dma_residue(unsigned int dmanr)
 }
 
 
-/* These are in kernel/dma.c: */
+/* These are in kernel/dma.c because x86 uses CONFIG_GENERIC_ISA_DMA */
+#ifdef CONFIG_ISA_DMA_API
 extern int request_dma(unsigned int dmanr, const char *device_id);
 extern void free_dma(unsigned int dmanr);
+#endif
 
 /* From PCI */
 
diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
index f0b6e5dbc5a0..1f2e61e28981 100644
--- a/arch/x86/include/asm/thread_info.h
+++ b/arch/x86/include/asm/thread_info.h
@@ -161,8 +161,14 @@ struct thread_info {
 
 #define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
 
-#define alloc_thread_info(tsk)                                          \
-        ((struct thread_info *)__get_free_pages(THREAD_FLAGS, THREAD_ORDER))
+#define alloc_thread_info_node(tsk, node)                               \
+({                                                                      \
+        struct page *page = alloc_pages_node(node, THREAD_FLAGS,        \
+                                             THREAD_ORDER);             \
+        struct thread_info *ret = page ? page_address(page) : NULL;     \
+                                                                        \
+        ret;                                                            \
+})
 
 #ifdef CONFIG_X86_32
 
diff --git a/arch/x86/include/asm/types.h b/arch/x86/include/asm/types.h
index df1da20f4534..88102055a4b8 100644
--- a/arch/x86/include/asm/types.h
+++ b/arch/x86/include/asm/types.h
@@ -1,20 +1,12 @@
 #ifndef _ASM_X86_TYPES_H
 #define _ASM_X86_TYPES_H
 
-#define dma_addr_t      dma_addr_t
-
 #include <asm-generic/types.h>
 
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__
 
 typedef u64 dma64_addr_t;
-#if defined(CONFIG_X86_64) || defined(CONFIG_HIGHMEM64G)
-/* DMA addresses come in 32-bit and 64-bit flavours. */
-typedef u64 dma_addr_t;
-#else
-typedef u32 dma_addr_t;
-#endif
 
 #endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 743642f1a36c..7338ef2218bc 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -41,7 +41,7 @@ obj-$(CONFIG_X86_32)	+= sys_i386_32.o i386_ksyms_32.o
 obj-$(CONFIG_X86_64)    += sys_x86_64.o x8664_ksyms_64.o
 obj-$(CONFIG_X86_64)    += syscall_64.o vsyscall_64.o
 obj-y                   += bootflag.o e820.o
-obj-y                   += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o
+obj-y                   += pci-dma.o quirks.o topology.o kdebugfs.o
 obj-y                   += alternative.o i8253.o pci-nommu.o hw_breakpoint.o
 obj-y                   += tsc.o io_delay.o rtc.o
 obj-y                   += pci-iommu_table.o
@@ -55,6 +55,7 @@ obj-$(CONFIG_X86_32)		+= tls.o
 obj-$(CONFIG_IA32_EMULATION)    += tls.o
 obj-y                           += step.o
 obj-$(CONFIG_INTEL_TXT)         += tboot.o
+obj-$(CONFIG_ISA_DMA_API)       += i8237.o
 obj-$(CONFIG_STACKTRACE)        += stacktrace.o
 obj-y                           += cpu/
 obj-y                           += acpi/
diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c
index 999e2793590b..81ac6c78c01c 100644
--- a/arch/x86/kernel/dumpstack.c
+++ b/arch/x86/kernel/dumpstack.c
@@ -322,16 +322,6 @@ void die(const char *str, struct pt_regs *regs, long err)
         oops_end(flags, regs, sig);
 }
 
-static int __init oops_setup(char *s)
-{
-        if (!s)
-                return -EINVAL;
-        if (!strcmp(s, "panic"))
-                panic_on_oops = 1;
-        return 0;
-}
-early_param("oops", oops_setup);
-
 static int __init kstack_setup(char *s)
 {
         if (!s)
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index 2d2673c28aff..5655c2272adb 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -77,9 +77,6 @@ void __init x86_64_start_kernel(char * real_mode_data)
         /* Make NULL pointers segfault */
         zap_identity_mappings();
 
-        /* Cleanup the over mapped high alias */
-        cleanup_highmap();
-
         max_pfn_mapped = KERNEL_IMAGE_SIZE >> PAGE_SHIFT;
 
         for (i = 0; i < NUM_EXCEPTION_VECTORS; i++) {
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 9d43b28e0728..32bd87cbf982 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -294,30 +294,11 @@ static void __init init_gbpages(void)
         else
                 direct_gbpages = 0;
 }
-
-static void __init cleanup_highmap_brk_end(void)
-{
-        pud_t *pud;
-        pmd_t *pmd;
-
-        mmu_cr4_features = read_cr4();
-
-        /*
-         * _brk_end cannot change anymore, but it and _end may be
-         * located on different 2M pages. cleanup_highmap(), however,
-         * can only consider _end when it runs, so destroy any
-         * mappings beyond _brk_end here.
-         */
-        pud = pud_offset(pgd_offset_k(_brk_end), _brk_end);
-        pmd = pmd_offset(pud, _brk_end - 1);
-        while (++pmd <= pmd_offset(pud, (unsigned long)_end - 1))
-                pmd_clear(pmd);
-}
 #else
 static inline void init_gbpages(void)
 {
 }
-static inline void cleanup_highmap_brk_end(void)
+static void __init cleanup_highmap(void)
 {
 }
 #endif
@@ -330,8 +311,6 @@ static void __init reserve_brk(void)
         /* Mark brk area as locked down and no longer taking any
            new allocations */
         _brk_start = 0;
-
-        cleanup_highmap_brk_end();
 }
 
 #ifdef CONFIG_BLK_DEV_INITRD
@@ -950,6 +929,8 @@ void __init setup_arch(char **cmdline_p)
          */
         reserve_brk();
 
+        cleanup_highmap();
+
         memblock.current_limit = get_max_mapped();
         memblock_x86_fill();
 
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 0aa34669ed3f..2362b646178e 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -52,6 +52,7 @@
 #include <asm/cacheflush.h>
 #include <asm/init.h>
 #include <asm/uv/uv.h>
+#include <asm/setup.h>
 
 static int __init parse_direct_gbpages_off(char *arg)
 {
@@ -294,18 +295,18 @@ void __init init_extra_mapping_uc(unsigned long phys, unsigned long size)
  * to the compile time generated pmds. This results in invalid pmds up
  * to the point where we hit the physaddr 0 mapping.
  *
- * We limit the mappings to the region from _text to _end.  _end is
- * rounded up to the 2MB boundary. This catches the invalid pmds as
+ * We limit the mappings to the region from _text to _brk_end.  _brk_end
+ * is rounded up to the 2MB boundary. This catches the invalid pmds as
  * well, as they are located before _text:
  */
 void __init cleanup_highmap(void)
 {
         unsigned long vaddr = __START_KERNEL_map;
-        unsigned long end = roundup((unsigned long)_end, PMD_SIZE) - 1;
+        unsigned long vaddr_end = __START_KERNEL_map + (max_pfn_mapped << PAGE_SHIFT);
+        unsigned long end = roundup((unsigned long)_brk_end, PMD_SIZE) - 1;
         pmd_t *pmd = level2_kernel_pgt;
-        pmd_t *last_pmd = pmd + PTRS_PER_PMD;
 
-        for (; pmd < last_pmd; pmd++, vaddr += PMD_SIZE) {
+        for (; vaddr + PMD_SIZE - 1 < vaddr_end; pmd++, vaddr += PMD_SIZE) {
                 if (pmd_none(*pmd))
                         continue;
                 if (vaddr < (unsigned long) _text || vaddr > end)
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 39ee7182fd18..c82df6c9c0f0 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1487,10 +1487,12 @@ static __init pte_t mask_rw_pte(pte_t *ptep, pte_t pte)
         /*
          * If the new pfn is within the range of the newly allocated
          * kernel pagetable, and it isn't being mapped into an
-         * early_ioremap fixmap slot, make sure it is RO.
+         * early_ioremap fixmap slot as a freshly allocated page, make sure
+         * it is RO.
          */
-        if (!is_early_ioremap_ptep(ptep) &&
-            pfn >= pgt_buf_start && pfn < pgt_buf_end)
+        if (((!is_early_ioremap_ptep(ptep) &&
+                        pfn >= pgt_buf_start && pfn < pgt_buf_end)) ||
+                        (is_early_ioremap_ptep(ptep) && pfn != (pgt_buf_end - 1)))
                 pte = pte_wrprotect(pte);
 
         return pte;
@@ -1700,9 +1702,6 @@ static __init void xen_map_identity_early(pmd_t *pmd, unsigned long max_pfn)
                 for (pteidx = 0; pteidx < PTRS_PER_PTE; pteidx++, pfn++) {
                         pte_t pte;
 
-                        if (pfn > max_pfn_mapped)
-                                max_pfn_mapped = pfn;
-
                         if (!pte_none(pte_page[pteidx]))
                                 continue;
 
@@ -1760,6 +1759,12 @@ __init pgd_t *xen_setup_kernel_pagetable(pgd_t *pgd,
         pud_t *l3;
         pmd_t *l2;
 
+        /* max_pfn_mapped is the last pfn mapped in the initial memory
+         * mappings. Considering that on Xen after the kernel mappings we
+         * have the mappings of some pages that don't exist in pfn space, we
+         * set max_pfn_mapped to the last real pfn mapped. */
+        max_pfn_mapped = PFN_DOWN(__pa(xen_start_info->mfn_list));
+
         /* Zap identity mapping */
         init_level4_pgt[0] = __pgd(0);
 
@@ -1864,9 +1869,7 @@ __init pgd_t *xen_setup_kernel_pagetable(pgd_t *pgd,
         initial_kernel_pmd =
                 extend_brk(sizeof(pmd_t) * PTRS_PER_PMD, PAGE_SIZE);
 
-        max_pfn_mapped = PFN_DOWN(__pa(xen_start_info->pt_base) +
-                                  xen_start_info->nr_pt_frames * PAGE_SIZE +
-                                  512*1024);
+        max_pfn_mapped = PFN_DOWN(__pa(xen_start_info->mfn_list));
 
         kernel_pmd = m2v(pgd[KERNEL_PGD_BOUNDARY].pgd);
         memcpy(initial_kernel_pmd, kernel_pmd, sizeof(pmd_t) * PTRS_PER_PMD);
diff --git a/arch/xtensa/include/asm/types.h b/arch/xtensa/include/asm/types.h
index c89569a8da0c..b1c981e39b52 100644
--- a/arch/xtensa/include/asm/types.h
+++ b/arch/xtensa/include/asm/types.h
@@ -32,10 +32,6 @@ typedef unsigned short umode_t;
 
 #define BITS_PER_LONG 32
 
-/* Dma addresses are 32-bits wide.  */
-
-typedef u32 dma_addr_t;
-
 #endif  /* __KERNEL__ */
 #endif
 
diff --git a/crypto/deflate.c b/crypto/deflate.c
index cbc7a33a9600..b5ccae29be74 100644
--- a/crypto/deflate.c
+++ b/crypto/deflate.c
@@ -48,7 +48,8 @@ static int deflate_comp_init(struct deflate_ctx *ctx)
         int ret = 0;
         struct z_stream_s *stream = &ctx->comp_stream;
 
-        stream->workspace = vzalloc(zlib_deflate_workspacesize());
+        stream->workspace = vzalloc(zlib_deflate_workspacesize(
+                                -DEFLATE_DEF_WINBITS, DEFLATE_DEF_MEMLEVEL));
         if (!stream->workspace) {
                 ret = -ENOMEM;
                 goto out;
diff --git a/crypto/zlib.c b/crypto/zlib.c
index 739b8fca4cea..d11d761a5e41 100644
--- a/crypto/zlib.c
+++ b/crypto/zlib.c
@@ -85,6 +85,7 @@ static int zlib_compress_setup(struct crypto_pcomp *tfm, void *params,
         struct zlib_ctx *ctx = crypto_tfm_ctx(crypto_pcomp_tfm(tfm));
         struct z_stream_s *stream = &ctx->comp_stream;
         struct nlattr *tb[ZLIB_COMP_MAX + 1];
+        int window_bits, mem_level;
         size_t workspacesize;
         int ret;
 
@@ -94,7 +95,14 @@ static int zlib_compress_setup(struct crypto_pcomp *tfm, void *params,
 
         zlib_comp_exit(ctx);
 
-        workspacesize = zlib_deflate_workspacesize();
+        window_bits = tb[ZLIB_COMP_WINDOWBITS]
+                                        ? nla_get_u32(tb[ZLIB_COMP_WINDOWBITS])
+                                        : MAX_WBITS;
+        mem_level = tb[ZLIB_COMP_MEMLEVEL]
+                                        ? nla_get_u32(tb[ZLIB_COMP_MEMLEVEL])
+                                        : DEF_MEM_LEVEL;
+
+        workspacesize = zlib_deflate_workspacesize(window_bits, mem_level);
         stream->workspace = vzalloc(workspacesize);
         if (!stream->workspace)
                 return -ENOMEM;
@@ -106,12 +114,8 @@ static int zlib_compress_setup(struct crypto_pcomp *tfm, void *params,
                                 tb[ZLIB_COMP_METHOD]
                                         ? nla_get_u32(tb[ZLIB_COMP_METHOD])
                                         : Z_DEFLATED,
-                                tb[ZLIB_COMP_WINDOWBITS]
-                                        ? nla_get_u32(tb[ZLIB_COMP_WINDOWBITS])
-                                        : MAX_WBITS,
-                                tb[ZLIB_COMP_MEMLEVEL]
-                                        ? nla_get_u32(tb[ZLIB_COMP_MEMLEVEL])
-                                        : DEF_MEM_LEVEL,
+                                window_bits,
+                                mem_level,
                                 tb[ZLIB_COMP_STRATEGY]
                                         ? nla_get_u32(tb[ZLIB_COMP_STRATEGY])
                                         : Z_DEFAULT_STRATEGY);
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 90f8f7676d1f..a18e497f1c3c 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -782,6 +782,9 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
 
         if (acpi_video_backlight_support()) {
                 struct backlight_properties props;
+                struct pci_dev *pdev;
+                acpi_handle acpi_parent;
+                struct device *parent = NULL;
                 int result;
                 static int count = 0;
                 char *name;
@@ -794,9 +797,20 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
                         return;
                 count++;
 
+                acpi_get_parent(device->dev->handle, &acpi_parent);
+
+                pdev = acpi_get_pci_dev(acpi_parent);
+                if (pdev) {
+                        parent = &pdev->dev;
+                        pci_dev_put(pdev);
+                }
+
                 memset(&props, 0, sizeof(struct backlight_properties));
+                props.type = BACKLIGHT_FIRMWARE;
                 props.max_brightness = device->brightness->count - 3;
-                device->backlight = backlight_device_register(name, NULL, device,
+                device->backlight = backlight_device_register(name,
+                                                              parent,
+                                                              device,
                                                               &acpi_backlight_ops,
                                                               &props);
                 kfree(name);
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index e1e38b11f48a..16dc3645291c 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -31,6 +31,7 @@
 #include <linux/ceph/osd_client.h>
 #include <linux/ceph/mon_client.h>
 #include <linux/ceph/decode.h>
+#include <linux/parser.h>
 
 #include <linux/kernel.h>
 #include <linux/device.h>
@@ -54,6 +55,8 @@
 
 #define DEV_NAME_LEN            32
 
+#define RBD_NOTIFY_TIMEOUT_DEFAULT 10
+
 /*
  * block device image metadata (in-memory version)
  */
@@ -71,6 +74,12 @@ struct rbd_image_header {
 
         char *snap_names;
         u64 *snap_sizes;
+
+        u64 obj_version;
+};
+
+struct rbd_options {
+        int     notify_timeout;
 };
 
 /*
@@ -78,6 +87,7 @@ struct rbd_image_header {
  */
 struct rbd_client {
         struct ceph_client      *client;
+        struct rbd_options      *rbd_opts;
         struct kref             kref;
         struct list_head        node;
 };
@@ -124,6 +134,9 @@ struct rbd_device {
         char                    pool_name[RBD_MAX_POOL_NAME_LEN];
         int                     poolid;
 
+        struct ceph_osd_event   *watch_event;
+        struct ceph_osd_request *watch_request;
+
         char                    snap_name[RBD_MAX_SNAP_NAME_LEN];
         u32 cur_snap;   /* index+1 of current snapshot within snap context
                            0 - for the head */
@@ -177,6 +190,8 @@ static void rbd_put_dev(struct rbd_device *rbd_dev)
         put_device(&rbd_dev->dev);
 }
 
+static int __rbd_update_snaps(struct rbd_device *rbd_dev);
+
 static int rbd_open(struct block_device *bdev, fmode_t mode)
 {
         struct gendisk *disk = bdev->bd_disk;
@@ -211,7 +226,8 @@ static const struct block_device_operations rbd_bd_ops = {
  * Initialize an rbd client instance.
  * We own *opt.
  */
-static struct rbd_client *rbd_client_create(struct ceph_options *opt)
+static struct rbd_client *rbd_client_create(struct ceph_options *opt,
+                                            struct rbd_options *rbd_opts)
 {
         struct rbd_client *rbdc;
         int ret = -ENOMEM;
@@ -233,6 +249,8 @@ static struct rbd_client *rbd_client_create(struct ceph_options *opt)
         if (ret < 0)
                 goto out_err;
 
+        rbdc->rbd_opts = rbd_opts;
+
         spin_lock(&node_lock);
         list_add_tail(&rbdc->node, &rbd_client_list);
         spin_unlock(&node_lock);
@@ -267,6 +285,59 @@ static struct rbd_client *__rbd_client_find(struct ceph_options *opt)
 }
 
 /*
+ * mount options
+ */
+enum {
+        Opt_notify_timeout,
+        Opt_last_int,
+        /* int args above */
+        Opt_last_string,
+        /* string args above */
+};
+
+static match_table_t rbdopt_tokens = {
+        {Opt_notify_timeout, "notify_timeout=%d"},
+        /* int args above */
+        /* string args above */
+        {-1, NULL}
+};
+
+static int parse_rbd_opts_token(char *c, void *private)
+{
+        struct rbd_options *rbdopt = private;
+        substring_t argstr[MAX_OPT_ARGS];
+        int token, intval, ret;
+
+        token = match_token((char *)c, rbdopt_tokens, argstr);
+        if (token < 0)
+                return -EINVAL;
+
+        if (token < Opt_last_int) {
+                ret = match_int(&argstr[0], &intval);
+                if (ret < 0) {
+                        pr_err("bad mount option arg (not int) "
+                               "at '%s'\n", c);
+                        return ret;
+                }
+                dout("got int token %d val %d\n", token, intval);
+        } else if (token > Opt_last_int && token < Opt_last_string) {
+                dout("got string token %d val %s\n", token,
+                     argstr[0].from);
+        } else {
+                dout("got token %d\n", token);
+        }
+
+        switch (token) {
+        case Opt_notify_timeout:
+                rbdopt->notify_timeout = intval;
+                break;
+        default:
+                BUG_ON(token);
+        }
+        return 0;
+}
+
+/*
  * Get a ceph client with specific addr and configuration, if one does
  * not exist create it.
  */
@@ -276,11 +347,18 @@ static int rbd_get_client(struct rbd_device *rbd_dev, const char *mon_addr,
         struct rbd_client *rbdc;
         struct ceph_options *opt;
         int ret;
+        struct rbd_options *rbd_opts;
+
+        rbd_opts = kzalloc(sizeof(*rbd_opts), GFP_KERNEL);
+        if (!rbd_opts)
+                return -ENOMEM;
+
+        rbd_opts->notify_timeout = RBD_NOTIFY_TIMEOUT_DEFAULT;
 
         ret = ceph_parse_options(&opt, options, mon_addr,
-                                 mon_addr + strlen(mon_addr), NULL, NULL);
+                                 mon_addr + strlen(mon_addr), parse_rbd_opts_token, rbd_opts);
         if (ret < 0)
-                return ret;
+                goto done_err;
 
         spin_lock(&node_lock);
         rbdc = __rbd_client_find(opt);
@@ -296,13 +374,18 @@ static int rbd_get_client(struct rbd_device *rbd_dev, const char *mon_addr,
         }
         spin_unlock(&node_lock);
 
-        rbdc = rbd_client_create(opt);
-        if (IS_ERR(rbdc))
-                return PTR_ERR(rbdc);
+        rbdc = rbd_client_create(opt, rbd_opts);
+        if (IS_ERR(rbdc)) {
+                ret = PTR_ERR(rbdc);
+                goto done_err;
+        }
 
         rbd_dev->rbd_client = rbdc;
         rbd_dev->client = rbdc->client;
         return 0;
+done_err:
+        kfree(rbd_opts);
+        return ret;
 }
 
 /*
@@ -318,6 +401,7 @@ static void rbd_client_release(struct kref *kref)
         spin_unlock(&node_lock);
 
         ceph_destroy_client(rbdc->client);
+        kfree(rbdc->rbd_opts);
         kfree(rbdc);
 }
 
@@ -666,7 +750,9 @@ static int rbd_do_request(struct request *rq,
                           struct ceph_osd_req_op *ops,
                           int num_reply,
                           void (*rbd_cb)(struct ceph_osd_request *req,
-                                         struct ceph_msg *msg))
+                                         struct ceph_msg *msg),
+                          struct ceph_osd_request **linger_req,
+                          u64 *ver)
 {
         struct ceph_osd_request *req;
         struct ceph_file_layout *layout;
@@ -729,12 +815,20 @@ static int rbd_do_request(struct request *rq,
                                 req->r_oid, req->r_oid_len);
         up_read(&header->snap_rwsem);
 
+        if (linger_req) {
+                ceph_osdc_set_request_linger(&dev->client->osdc, req);
+                *linger_req = req;
+        }
+
         ret = ceph_osdc_start_request(&dev->client->osdc, req, false);
         if (ret < 0)
                 goto done_err;
 
         if (!rbd_cb) {
                 ret = ceph_osdc_wait_request(&dev->client->osdc, req);
+                if (ver)
+                        *ver = le64_to_cpu(req->r_reassert_version.version);
+                dout("reassert_ver=%lld\n", le64_to_cpu(req->r_reassert_version.version));
                 ceph_osdc_put_request(req);
         }
         return ret;
@@ -789,6 +883,11 @@ static void rbd_req_cb(struct ceph_osd_request *req, struct ceph_msg *msg)
         kfree(req_data);
 }
 
+static void rbd_simple_req_cb(struct ceph_osd_request *req, struct ceph_msg *msg)
+{
+        ceph_osdc_put_request(req);
+}
+
 /*
  * Do a synchronous ceph osd operation
  */
@@ -801,7 +900,9 @@ static int rbd_req_sync_op(struct rbd_device *dev,
                            int num_reply,
                            const char *obj,
                            u64 ofs, u64 len,
-                           char *buf)
+                           char *buf,
+                           struct ceph_osd_request **linger_req,
+                           u64 *ver)
 {
         int ret;
         struct page **pages;
@@ -833,7 +934,8 @@ static int rbd_req_sync_op(struct rbd_device *dev,
                           flags,
                           ops,
                           2,
-                          NULL);
+                          NULL,
+                          linger_req, ver);
         if (ret < 0)
                 goto done_ops;
 
@@ -893,7 +995,7 @@ static int rbd_do_op(struct request *rq,
                              flags,
                              ops,
                              num_reply,
-                             rbd_req_cb);
+                             rbd_req_cb, 0, NULL);
 done:
         kfree(seg_name);
         return ret;
@@ -940,18 +1042,174 @@ static int rbd_req_sync_read(struct rbd_device *dev,
                           u64 snapid,
                           const char *obj,
                           u64 ofs, u64 len,
-                          char *buf)
+                          char *buf,
+                          u64 *ver)
 {
         return rbd_req_sync_op(dev, NULL,
                                (snapid ? snapid : CEPH_NOSNAP),
                                CEPH_OSD_OP_READ,
                                CEPH_OSD_FLAG_READ,
                                NULL,
-                               1, obj, ofs, len, buf);
+                               1, obj, ofs, len, buf, NULL, ver);
 }
 
 /*
- * Request sync osd read
+ * Request sync osd watch
+ */
+static int rbd_req_sync_notify_ack(struct rbd_device *dev,
+                                   u64 ver,
+                                   u64 notify_id,
+                                   const char *obj)
+{
+        struct ceph_osd_req_op *ops;
+        struct page **pages = NULL;
+        int ret = rbd_create_rw_ops(&ops, 1, CEPH_OSD_OP_NOTIFY_ACK, 0);
+        if (ret < 0)
+                return ret;
+
+        ops[0].watch.ver = cpu_to_le64(dev->header.obj_version);
+        ops[0].watch.cookie = notify_id;
+        ops[0].watch.flag = 0;
+
+        ret = rbd_do_request(NULL, dev, NULL, CEPH_NOSNAP,
+                          obj, 0, 0, NULL,
+                          pages, 0,
+                          CEPH_OSD_FLAG_READ,
+                          ops,
+                          1,
+                          rbd_simple_req_cb, 0, NULL);
+
+        rbd_destroy_ops(ops);
+        return ret;
+}
+
+static void rbd_watch_cb(u64 ver, u64 notify_id, u8 opcode, void *data)
+{
+        struct rbd_device *dev = (struct rbd_device *)data;
+        if (!dev)
+                return;
+
+        dout("rbd_watch_cb %s notify_id=%lld opcode=%d\n", dev->obj_md_name,
+                notify_id, (int)opcode);
+        mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
+        __rbd_update_snaps(dev);
+        mutex_unlock(&ctl_mutex);
+
+        rbd_req_sync_notify_ack(dev, ver, notify_id, dev->obj_md_name);
+}
+
+/*
+ * Request sync osd watch
+ */
+static int rbd_req_sync_watch(struct rbd_device *dev,
+                              const char *obj,
+                              u64 ver)
+{
+        struct ceph_osd_req_op *ops;
+        struct ceph_osd_client *osdc = &dev->client->osdc;
+
+        int ret = rbd_create_rw_ops(&ops, 1, CEPH_OSD_OP_WATCH, 0);
+        if (ret < 0)
+                return ret;
+
+        ret = ceph_osdc_create_event(osdc, rbd_watch_cb, 0,
+                                     (void *)dev, &dev->watch_event);
+        if (ret < 0)
+                goto fail;
+
+        ops[0].watch.ver = cpu_to_le64(ver);
+        ops[0].watch.cookie = cpu_to_le64(dev->watch_event->cookie);
+        ops[0].watch.flag = 1;
+
+        ret = rbd_req_sync_op(dev, NULL,
+                              CEPH_NOSNAP,
+                              0,
+                              CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK,
+                              ops,
+                              1, obj, 0, 0, NULL,
+                              &dev->watch_request, NULL);
+
+        if (ret < 0)
+                goto fail_event;
+
+        rbd_destroy_ops(ops);
+        return 0;
+
+fail_event:
+        ceph_osdc_cancel_event(dev->watch_event);
+        dev->watch_event = NULL;
+fail:
+        rbd_destroy_ops(ops);
+        return ret;
+}
+
+struct rbd_notify_info {
+        struct rbd_device *dev;
+};
+
+static void rbd_notify_cb(u64 ver, u64 notify_id, u8 opcode, void *data)
+{
+        struct rbd_device *dev = (struct rbd_device *)data;
+        if (!dev)
+                return;
+
+        dout("rbd_notify_cb %s notify_id=%lld opcode=%d\n", dev->obj_md_name,
+                notify_id, (int)opcode);
+}
+
+/*
+ * Request sync osd notify
+ */
+static int rbd_req_sync_notify(struct rbd_device *dev,
+                          const char *obj)
+{
+        struct ceph_osd_req_op *ops;
+        struct ceph_osd_client *osdc = &dev->client->osdc;
+        struct ceph_osd_event *event;
+        struct rbd_notify_info info;
+        int payload_len = sizeof(u32) + sizeof(u32);
+        int ret;
+
+        ret = rbd_create_rw_ops(&ops, 1, CEPH_OSD_OP_NOTIFY, payload_len);
+        if (ret < 0)
+                return ret;
+
+        info.dev = dev;
+
+        ret = ceph_osdc_create_event(osdc, rbd_notify_cb, 1,
+                                     (void *)&info, &event);
+        if (ret < 0)
+                goto fail;
+
+        ops[0].watch.ver = 1;
+        ops[0].watch.flag = 1;
+        ops[0].watch.cookie = event->cookie;
+        ops[0].watch.prot_ver = RADOS_NOTIFY_VER;
+        ops[0].watch.timeout = 12;
+
+        ret = rbd_req_sync_op(dev, NULL,
+                               CEPH_NOSNAP,
+                               0,
+                               CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK,
+                               ops,
+                               1, obj, 0, 0, NULL, NULL, NULL);
+        if (ret < 0)
+                goto fail_event;
+
+        ret = ceph_osdc_wait_event(event, CEPH_OSD_TIMEOUT_DEFAULT);
+        dout("ceph_osdc_wait_event returned %d\n", ret);
+        rbd_destroy_ops(ops);
+        return 0;
+
+fail_event:
+        ceph_osdc_cancel_event(event);
+fail:
+        rbd_destroy_ops(ops);
+        return ret;
+}
+
+/*
+ * Request sync osd rollback
  */
 static int rbd_req_sync_rollback_obj(struct rbd_device *dev,
                                      u64 snapid,
@@ -969,13 +1227,10 @@ static int rbd_req_sync_rollback_obj(struct rbd_device *dev,
                                0,
                                CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK,
                                ops,
-                               1, obj, 0, 0, NULL);
+                               1, obj, 0, 0, NULL, NULL, NULL);
 
         rbd_destroy_ops(ops);
 
-        if (ret < 0)
-                return ret;
-
         return ret;
 }
 
@@ -987,7 +1242,8 @@ static int rbd_req_sync_exec(struct rbd_device *dev,
                              const char *cls,
                              const char *method,
                              const char *data,
-                             int len)
+                             int len,
+                             u64 *ver)
 {
         struct ceph_osd_req_op *ops;
         int cls_len = strlen(cls);
@@ -1010,7 +1266,7 @@ static int rbd_req_sync_exec(struct rbd_device *dev,
                                0,
                                CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK,
                                ops,
-                               1, obj, 0, 0, NULL);
+                               1, obj, 0, 0, NULL, NULL, ver);
 
         rbd_destroy_ops(ops);
 
@@ -1156,6 +1412,7 @@ static int rbd_read_header(struct rbd_device *rbd_dev,
         struct rbd_image_header_ondisk *dh;
         int snap_count = 0;
         u64 snap_names_len = 0;
+        u64 ver;
 
         while (1) {
                 int len = sizeof(*dh) +
@@ -1171,7 +1428,7 @@ static int rbd_read_header(struct rbd_device *rbd_dev,
                                        NULL, CEPH_NOSNAP,
                                        rbd_dev->obj_md_name,
                                        0, len,
-                                       (char *)dh);
+                                       (char *)dh, &ver);
                 if (rc < 0)
                         goto out_dh;
 
@@ -1188,6 +1445,7 @@ static int rbd_read_header(struct rbd_device *rbd_dev,
                 }
                 break;
         }
+        header->obj_version = ver;
 
 out_dh:
         kfree(dh);
@@ -1205,6 +1463,7 @@ static int rbd_header_add_snap(struct rbd_device *dev,
         u64 new_snapid;
         int ret;
         void *data, *data_start, *data_end;
+        u64 ver;
 
         /* we should create a snapshot only if we're pointing at the head */
         if (dev->cur_snap)
@@ -1227,7 +1486,7 @@ static int rbd_header_add_snap(struct rbd_device *dev,
         ceph_encode_64_safe(&data, data_end, new_snapid, bad);
 
         ret = rbd_req_sync_exec(dev, dev->obj_md_name, "rbd", "snap_add",
-                                data_start, data - data_start);
+                                data_start, data - data_start, &ver);
 
         kfree(data_start);
 
@@ -1259,6 +1518,7 @@ static int __rbd_update_snaps(struct rbd_device *rbd_dev)
         int ret;
         struct rbd_image_header h;
         u64 snap_seq;
+        int follow_seq = 0;
 
         ret = rbd_read_header(rbd_dev, &h);
         if (ret < 0)
@@ -1267,6 +1527,11 @@ static int __rbd_update_snaps(struct rbd_device *rbd_dev)
         down_write(&rbd_dev->header.snap_rwsem);
 
         snap_seq = rbd_dev->header.snapc->seq;
+        if (rbd_dev->header.total_snaps &&
+            rbd_dev->header.snapc->snaps[0] == snap_seq)
+                /* pointing at the head, will need to follow that
+                   if head moves */
+                follow_seq = 1;
 
         kfree(rbd_dev->header.snapc);
         kfree(rbd_dev->header.snap_names);
@@ -1277,7 +1542,10 @@ static int __rbd_update_snaps(struct rbd_device *rbd_dev)
         rbd_dev->header.snap_names = h.snap_names;
         rbd_dev->header.snap_names_len = h.snap_names_len;
         rbd_dev->header.snap_sizes = h.snap_sizes;
-        rbd_dev->header.snapc->seq = snap_seq;
+        if (follow_seq)
+                rbd_dev->header.snapc->seq = rbd_dev->header.snapc->snaps[0];
+        else
+                rbd_dev->header.snapc->seq = snap_seq;
 
         ret = __rbd_init_snaps_header(rbd_dev);
 
@@ -1699,7 +1967,28 @@ static void rbd_bus_del_dev(struct rbd_device *rbd_dev)
         device_unregister(&rbd_dev->dev);
 }
 
-static ssize_t rbd_add(struct bus_type *bus, const char *buf, size_t count)
+static int rbd_init_watch_dev(struct rbd_device *rbd_dev)
+{
+        int ret, rc;
+
+        do {
+                ret = rbd_req_sync_watch(rbd_dev, rbd_dev->obj_md_name,
+                                         rbd_dev->header.obj_version);
+                if (ret == -ERANGE) {
+                        mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
+                        rc = __rbd_update_snaps(rbd_dev);
+                        mutex_unlock(&ctl_mutex);
+                        if (rc < 0)
+                                return rc;
+                }
+        } while (ret == -ERANGE);
+
+        return ret;
+}
+
+static ssize_t rbd_add(struct bus_type *bus,
+                       const char *buf,
+                       size_t count)
 {
         struct ceph_osd_client *osdc;
         struct rbd_device *rbd_dev;
@@ -1797,6 +2086,10 @@ static ssize_t rbd_add(struct bus_type *bus, const char *buf, size_t count)
         if (rc)
                 goto err_out_bus;
 
+        rc = rbd_init_watch_dev(rbd_dev);
+        if (rc)
+                goto err_out_bus;
+
         return count;
 
 err_out_bus:
@@ -1849,6 +2142,12 @@ static void rbd_dev_release(struct device *dev)
         struct rbd_device *rbd_dev =
                         container_of(dev, struct rbd_device, dev);
 
+        if (rbd_dev->watch_request)
+                ceph_osdc_unregister_linger_request(&rbd_dev->client->osdc,
+                                                    rbd_dev->watch_request);
+        if (rbd_dev->watch_event)
+                ceph_osdc_cancel_event(rbd_dev->watch_event);
+
         rbd_put_client(rbd_dev);
 
         /* clean up and free blkdev */
@@ -1914,14 +2213,24 @@ static ssize_t rbd_snap_add(struct device *dev,
         ret = rbd_header_add_snap(rbd_dev,
                                   name, GFP_KERNEL);
         if (ret < 0)
-                goto done_unlock;
+                goto err_unlock;
 
         ret = __rbd_update_snaps(rbd_dev);
         if (ret < 0)
-                goto done_unlock;
+                goto err_unlock;
+
+        /* shouldn't hold ctl_mutex when notifying.. notify might
+           trigger a watch callback that would need to get that mutex */
+        mutex_unlock(&ctl_mutex);
+
+        /* make a best effort, don't error if failed */
+        rbd_req_sync_notify(rbd_dev, rbd_dev->obj_md_name);
 
         ret = count;
-done_unlock:
+        kfree(name);
+        return ret;
+
+err_unlock:
         mutex_unlock(&ctl_mutex);
         kfree(name);
         return ret;
diff --git a/drivers/dca/dca-core.c b/drivers/dca/dca-core.c
index c461eda62411..4abd089a094f 100644
--- a/drivers/dca/dca-core.c
+++ b/drivers/dca/dca-core.c
@@ -111,10 +111,8 @@ static void unregister_dca_providers(void)
         /* at this point only one domain in the list is expected */
         domain = list_first_entry(&dca_domains, struct dca_domain, node);
 
-        list_for_each_entry_safe(dca, _dca, &domain->dca_providers, node) {
-                list_del(&dca->node);
-                list_add(&dca->node, &unregistered_providers);
-        }
+        list_for_each_entry_safe(dca, _dca, &domain->dca_providers, node)
+                list_move(&dca->node, &unregistered_providers);
 
         dca_free_domain(domain);
 
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index 1c28816152fa..a572600e44eb 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -82,7 +82,7 @@ config INTEL_IOP_ADMA
 
 config DW_DMAC
         tristate "Synopsys DesignWare AHB DMA support"
-        depends on AVR32
+        depends on HAVE_CLK
         select DMA_ENGINE
         default y if CPU_AT32AP7000
         help
@@ -221,12 +221,20 @@ config IMX_SDMA
 
 config IMX_DMA
         tristate "i.MX DMA support"
-        depends on ARCH_MX1 || ARCH_MX21 || MACH_MX27
+        depends on IMX_HAVE_DMA_V1
         select DMA_ENGINE
         help
           Support the i.MX DMA engine. This engine is integrated into
           Freescale i.MX1/21/27 chips.
 
+config MXS_DMA
+        bool "MXS DMA support"
+        depends on SOC_IMX23 || SOC_IMX28
+        select DMA_ENGINE
+        help
+          Support the MXS DMA engine. This engine including APBH-DMA
+          and APBX-DMA is integrated into Freescale i.MX23/28 chips.
+
 config DMA_ENGINE
         bool
 
diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile
index 1be065a62f8c..836095ab3c5c 100644
--- a/drivers/dma/Makefile
+++ b/drivers/dma/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_COH901318) += coh901318.o coh901318_lli.o
 obj-$(CONFIG_AMCC_PPC440SPE_ADMA) += ppc4xx/
 obj-$(CONFIG_IMX_SDMA) += imx-sdma.o
 obj-$(CONFIG_IMX_DMA) += imx-dma.o
+obj-$(CONFIG_MXS_DMA) += mxs-dma.o
 obj-$(CONFIG_TIMB_DMA) += timb_dma.o
 obj-$(CONFIG_STE_DMA40) += ste_dma40.o ste_dma40_ll.o
 obj-$(CONFIG_PL330_DMA) += pl330.o
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 5589358b684d..e0888cb538d4 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -54,6 +54,11 @@ module_param(pq_sources, uint, S_IRUGO);
 MODULE_PARM_DESC(pq_sources,
                 "Number of p+q source buffers (default: 3)");
 
+static int timeout = 3000;
+module_param(timeout, uint, S_IRUGO);
+MODULE_PARM_DESC(timeout, "Transfer Timeout in msec (default: 3000), \
+                Pass -1 for infinite timeout");
+
 /*
  * Initialization patterns. All bytes in the source buffer has bit 7
  * set, all bytes in the destination buffer has bit 7 cleared.
@@ -285,7 +290,12 @@ static int dmatest_func(void *data)
 
         set_user_nice(current, 10);
 
-        flags = DMA_CTRL_ACK | DMA_COMPL_SKIP_DEST_UNMAP | DMA_PREP_INTERRUPT;
+        /*
+         * src buffers are freed by the DMAEngine code with dma_unmap_single()
+         * dst buffers are freed by ourselves below
+         */
+        flags = DMA_CTRL_ACK | DMA_PREP_INTERRUPT
+              | DMA_COMPL_SKIP_DEST_UNMAP | DMA_COMPL_SRC_UNMAP_SINGLE;
 
         while (!kthread_should_stop()
                && !(iterations && total_tests >= iterations)) {
@@ -294,7 +304,7 @@ static int dmatest_func(void *data)
                 dma_addr_t dma_srcs[src_cnt];
                 dma_addr_t dma_dsts[dst_cnt];
                 struct completion cmp;
-                unsigned long tmo = msecs_to_jiffies(3000);
+                unsigned long tmo = msecs_to_jiffies(timeout);
                 u8 align = 0;
 
                 total_tests++;
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index a3991ab0d67e..9c25c7d099e4 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -32,26 +32,30 @@
  * which does not support descriptor writeback.
  */
 
-/* NOTE:  DMS+SMS is system-specific. We should get this information
- * from the platform code somehow.
- */
-#define DWC_DEFAULT_CTLLO       (DWC_CTLL_DST_MSIZE(0)          \
-                                | DWC_CTLL_SRC_MSIZE(0)         \
-                                | DWC_CTLL_DMS(0)               \
-                                | DWC_CTLL_SMS(1)               \
-                                | DWC_CTLL_LLP_D_EN             \
-                                | DWC_CTLL_LLP_S_EN)
+#define DWC_DEFAULT_CTLLO(private) ({                           \
+                struct dw_dma_slave *__slave = (private);       \
+                int dms = __slave ? __slave->dst_master : 0;    \
+                int sms = __slave ? __slave->src_master : 1;    \
+                u8 smsize = __slave ? __slave->src_msize : DW_DMA_MSIZE_16; \
+                u8 dmsize = __slave ? __slave->dst_msize : DW_DMA_MSIZE_16; \
+                                                                \
+                (DWC_CTLL_DST_MSIZE(dmsize)                     \
+                 | DWC_CTLL_SRC_MSIZE(smsize)                   \
+                 | DWC_CTLL_LLP_D_EN                            \
+                 | DWC_CTLL_LLP_S_EN                            \
+                 | DWC_CTLL_DMS(dms)                            \
+                 | DWC_CTLL_SMS(sms));                          \
+        })
 
 /*
  * This is configuration-dependent and usually a funny size like 4095.
- * Let's round it down to the nearest power of two.
  *
  * Note that this is a transfer count, i.e. if we transfer 32-bit
- * words, we can do 8192 bytes per descriptor.
+ * words, we can do 16380 bytes per descriptor.
  *
  * This parameter is also system-specific.
  */
-#define DWC_MAX_COUNT   2048U
+#define DWC_MAX_COUNT   4095U
 
 /*
  * Number of descriptors to allocate for each channel. This should be
@@ -84,11 +88,6 @@ static struct dw_desc *dwc_first_active(struct dw_dma_chan *dwc)
         return list_entry(dwc->active_list.next, struct dw_desc, desc_node);
 }
 
-static struct dw_desc *dwc_first_queued(struct dw_dma_chan *dwc)
-{
-        return list_entry(dwc->queue.next, struct dw_desc, desc_node);
-}
-
 static struct dw_desc *dwc_desc_get(struct dw_dma_chan *dwc)
 {
         struct dw_desc *desc, *_desc;
@@ -201,6 +200,7 @@ dwc_descriptor_complete(struct dw_dma_chan *dwc, struct dw_desc *desc)
         dma_async_tx_callback           callback;
         void                            *param;
         struct dma_async_tx_descriptor  *txd = &desc->txd;
+        struct dw_desc                  *child;
 
         dev_vdbg(chan2dev(&dwc->chan), "descriptor %u complete\n", txd->cookie);
 
@@ -209,6 +209,12 @@ dwc_descriptor_complete(struct dw_dma_chan *dwc, struct dw_desc *desc)
         param = txd->callback_param;
 
         dwc_sync_desc_for_cpu(dwc, desc);
+
+        /* async_tx_ack */
+        list_for_each_entry(child, &desc->tx_list, desc_node)
+                async_tx_ack(&child->txd);
+        async_tx_ack(&desc->txd);
+
         list_splice_init(&desc->tx_list, &dwc->free_list);
         list_move(&desc->desc_node, &dwc->free_list);
 
@@ -259,10 +265,11 @@ static void dwc_complete_all(struct dw_dma *dw, struct dw_dma_chan *dwc)
          * Submit queued descriptors ASAP, i.e. before we go through
          * the completed ones.
          */
-        if (!list_empty(&dwc->queue))
-                dwc_dostart(dwc, dwc_first_queued(dwc));
         list_splice_init(&dwc->active_list, &list);
-        list_splice_init(&dwc->queue, &dwc->active_list);
+        if (!list_empty(&dwc->queue)) {
+                list_move(dwc->queue.next, &dwc->active_list);
+                dwc_dostart(dwc, dwc_first_active(dwc));
+        }
 
         list_for_each_entry_safe(desc, _desc, &list, desc_node)
                 dwc_descriptor_complete(dwc, desc);
@@ -291,6 +298,9 @@ static void dwc_scan_descriptors(struct dw_dma *dw, struct dw_dma_chan *dwc)
                 return;
         }
 
+        if (list_empty(&dwc->active_list))
+                return;
+
         dev_vdbg(chan2dev(&dwc->chan), "scan_descriptors: llp=0x%x\n", llp);
 
         list_for_each_entry_safe(desc, _desc, &dwc->active_list, desc_node) {
@@ -319,8 +329,8 @@ static void dwc_scan_descriptors(struct dw_dma *dw, struct dw_dma_chan *dwc)
                 cpu_relax();
 
         if (!list_empty(&dwc->queue)) {
-                dwc_dostart(dwc, dwc_first_queued(dwc));
-                list_splice_init(&dwc->queue, &dwc->active_list);
+                list_move(dwc->queue.next, &dwc->active_list);
+                dwc_dostart(dwc, dwc_first_active(dwc));
         }
 }
 
@@ -346,7 +356,7 @@ static void dwc_handle_error(struct dw_dma *dw, struct dw_dma_chan *dwc)
          */
         bad_desc = dwc_first_active(dwc);
         list_del_init(&bad_desc->desc_node);
-        list_splice_init(&dwc->queue, dwc->active_list.prev);
+        list_move(dwc->queue.next, dwc->active_list.prev);
 
         /* Clear the error flag and try to restart the controller */
         dma_writel(dw, CLEAR.ERROR, dwc->mask);
@@ -541,8 +551,8 @@ static dma_cookie_t dwc_tx_submit(struct dma_async_tx_descriptor *tx)
         if (list_empty(&dwc->active_list)) {
                 dev_vdbg(chan2dev(tx->chan), "tx_submit: started %u\n",
                                 desc->txd.cookie);
-                dwc_dostart(dwc, desc);
                 list_add_tail(&desc->desc_node, &dwc->active_list);
+                dwc_dostart(dwc, dwc_first_active(dwc));
         } else {
                 dev_vdbg(chan2dev(tx->chan), "tx_submit: queued %u\n",
                                 desc->txd.cookie);
@@ -581,14 +591,16 @@ dwc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
          * We can be a lot more clever here, but this should take care
          * of the most common optimization.
          */
-        if (!((src | dest  | len) & 3))
+        if (!((src | dest  | len) & 7))
+                src_width = dst_width = 3;
+        else if (!((src | dest  | len) & 3))
                 src_width = dst_width = 2;
         else if (!((src | dest | len) & 1))
                 src_width = dst_width = 1;
         else
                 src_width = dst_width = 0;
 
-        ctllo = DWC_DEFAULT_CTLLO
+        ctllo = DWC_DEFAULT_CTLLO(chan->private)
                         | DWC_CTLL_DST_WIDTH(dst_width)
                         | DWC_CTLL_SRC_WIDTH(src_width)
                         | DWC_CTLL_DST_INC
@@ -669,11 +681,11 @@ dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
 
         switch (direction) {
         case DMA_TO_DEVICE:
-                ctllo = (DWC_DEFAULT_CTLLO
+                ctllo = (DWC_DEFAULT_CTLLO(chan->private)
                                 | DWC_CTLL_DST_WIDTH(reg_width)
                                 | DWC_CTLL_DST_FIX
                                 | DWC_CTLL_SRC_INC
-                                | DWC_CTLL_FC_M2P);
+                                | DWC_CTLL_FC(dws->fc));
                 reg = dws->tx_reg;
                 for_each_sg(sgl, sg, sg_len, i) {
                         struct dw_desc  *desc;
@@ -714,11 +726,11 @@ dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
                 }
                 break;
         case DMA_FROM_DEVICE:
-                ctllo = (DWC_DEFAULT_CTLLO
+                ctllo = (DWC_DEFAULT_CTLLO(chan->private)
                                 | DWC_CTLL_SRC_WIDTH(reg_width)
                                 | DWC_CTLL_DST_INC
                                 | DWC_CTLL_SRC_FIX
-                                | DWC_CTLL_FC_P2M);
+                                | DWC_CTLL_FC(dws->fc));
 
                 reg = dws->rx_reg;
                 for_each_sg(sgl, sg, sg_len, i) {
@@ -834,7 +846,9 @@ dwc_tx_status(struct dma_chan *chan,
 
         ret = dma_async_is_complete(cookie, last_complete, last_used);
         if (ret != DMA_SUCCESS) {
+                spin_lock_bh(&dwc->lock);
                 dwc_scan_descriptors(to_dw_dma(chan->device), dwc);
+                spin_unlock_bh(&dwc->lock);
 
                 last_complete = dwc->completed;
                 last_used = chan->cookie;
@@ -889,8 +903,11 @@ static int dwc_alloc_chan_resources(struct dma_chan *chan)
                 BUG_ON(!dws->dma_dev || dws->dma_dev != dw->dma.dev);
 
                 cfghi = dws->cfg_hi;
-                cfglo = dws->cfg_lo;
+                cfglo = dws->cfg_lo & ~DWC_CFGL_CH_PRIOR_MASK;
         }
+
+        cfglo |= DWC_CFGL_CH_PRIOR(dwc->priority);
+
         channel_writel(dwc, CFG_LO, cfglo);
         channel_writel(dwc, CFG_HI, cfghi);
 
@@ -1126,23 +1143,23 @@ struct dw_cyclic_desc *dw_dma_cyclic_prep(struct dma_chan *chan,
                 case DMA_TO_DEVICE:
                         desc->lli.dar = dws->tx_reg;
                         desc->lli.sar = buf_addr + (period_len * i);
-                        desc->lli.ctllo = (DWC_DEFAULT_CTLLO
+                        desc->lli.ctllo = (DWC_DEFAULT_CTLLO(chan->private)
                                         | DWC_CTLL_DST_WIDTH(reg_width)
                                         | DWC_CTLL_SRC_WIDTH(reg_width)
                                         | DWC_CTLL_DST_FIX
                                         | DWC_CTLL_SRC_INC
-                                        | DWC_CTLL_FC_M2P
+                                        | DWC_CTLL_FC(dws->fc)
                                         | DWC_CTLL_INT_EN);
                         break;
                 case DMA_FROM_DEVICE:
                         desc->lli.dar = buf_addr + (period_len * i);
                         desc->lli.sar = dws->rx_reg;
-                        desc->lli.ctllo = (DWC_DEFAULT_CTLLO
+                        desc->lli.ctllo = (DWC_DEFAULT_CTLLO(chan->private)
                                         | DWC_CTLL_SRC_WIDTH(reg_width)
                                         | DWC_CTLL_DST_WIDTH(reg_width)
                                         | DWC_CTLL_DST_INC
                                         | DWC_CTLL_SRC_FIX
-                                        | DWC_CTLL_FC_P2M
+                                        | DWC_CTLL_FC(dws->fc)
                                         | DWC_CTLL_INT_EN);
                         break;
                 default:
@@ -1307,7 +1324,17 @@ static int __init dw_probe(struct platform_device *pdev)
                 dwc->chan.device = &dw->dma;
                 dwc->chan.cookie = dwc->completed = 1;
                 dwc->chan.chan_id = i;
-                list_add_tail(&dwc->chan.device_node, &dw->dma.channels);
+                if (pdata->chan_allocation_order == CHAN_ALLOCATION_ASCENDING)
+                        list_add_tail(&dwc->chan.device_node,
+                                        &dw->dma.channels);
+                else
+                        list_add(&dwc->chan.device_node, &dw->dma.channels);
+
+                /* 7 is highest priority & 0 is lowest. */
+                if (pdata->chan_priority == CHAN_PRIORITY_ASCENDING)
+                        dwc->priority = 7 - i;
+                else
+                        dwc->priority = i;
 
                 dwc->ch_regs = &__dw_regs(dw)->CHAN[i];
                 spin_lock_init(&dwc->lock);
@@ -1335,6 +1362,8 @@ static int __init dw_probe(struct platform_device *pdev)
 
         dma_cap_set(DMA_MEMCPY, dw->dma.cap_mask);
         dma_cap_set(DMA_SLAVE, dw->dma.cap_mask);
+        if (pdata->is_private)
+                dma_cap_set(DMA_PRIVATE, dw->dma.cap_mask);
         dw->dma.dev = &pdev->dev;
         dw->dma.device_alloc_chan_resources = dwc_alloc_chan_resources;
         dw->dma.device_free_chan_resources = dwc_free_chan_resources;
@@ -1447,7 +1476,7 @@ static int __init dw_init(void)
 {
         return platform_driver_probe(&dw_driver, dw_probe);
 }
-module_init(dw_init);
+subsys_initcall(dw_init);
 
 static void __exit dw_exit(void)
 {
diff --git a/drivers/dma/dw_dmac_regs.h b/drivers/dma/dw_dmac_regs.h
index d9a939f67f46..720f821527f8 100644
--- a/drivers/dma/dw_dmac_regs.h
+++ b/drivers/dma/dw_dmac_regs.h
@@ -86,6 +86,7 @@ struct dw_dma_regs {
 #define DWC_CTLL_SRC_MSIZE(n)   ((n)<<14)
 #define DWC_CTLL_S_GATH_EN      (1 << 17)       /* src gather, !FIX */
 #define DWC_CTLL_D_SCAT_EN      (1 << 18)       /* dst scatter, !FIX */
+#define DWC_CTLL_FC(n)          ((n) << 20)
 #define DWC_CTLL_FC_M2M         (0 << 20)       /* mem-to-mem */
 #define DWC_CTLL_FC_M2P         (1 << 20)       /* mem-to-periph */
 #define DWC_CTLL_FC_P2M         (2 << 20)       /* periph-to-mem */
@@ -101,6 +102,8 @@ struct dw_dma_regs {
 #define DWC_CTLH_BLOCK_TS_MASK  0x00000fff
 
 /* Bitfields in CFG_LO. Platform-configurable bits are in <linux/dw_dmac.h> */
+#define DWC_CFGL_CH_PRIOR_MASK  (0x7 << 5)      /* priority mask */
+#define DWC_CFGL_CH_PRIOR(x)    ((x) << 5)      /* priority */
 #define DWC_CFGL_CH_SUSP        (1 << 8)        /* pause xfer */
 #define DWC_CFGL_FIFO_EMPTY     (1 << 9)        /* pause xfer */
 #define DWC_CFGL_HS_DST         (1 << 10)       /* handshake w/dst */
@@ -134,6 +137,7 @@ struct dw_dma_chan {
         struct dma_chan         chan;
         void __iomem            *ch_regs;
         u8                      mask;
+        u8                      priority;
 
         spinlock_t              lock;
 
@@ -155,9 +159,9 @@ __dwc_regs(struct dw_dma_chan *dwc)
 }
 
 #define channel_readl(dwc, name) \
-        __raw_readl(&(__dwc_regs(dwc)->name))
+        readl(&(__dwc_regs(dwc)->name))
 #define channel_writel(dwc, name, val) \
-        __raw_writel((val), &(__dwc_regs(dwc)->name))
+        writel((val), &(__dwc_regs(dwc)->name))
 
 static inline struct dw_dma_chan *to_dw_dma_chan(struct dma_chan *chan)
 {
@@ -181,9 +185,9 @@ static inline struct dw_dma_regs __iomem *__dw_regs(struct dw_dma *dw)
 }
 
 #define dma_readl(dw, name) \
-        __raw_readl(&(__dw_regs(dw)->name))
+        readl(&(__dw_regs(dw)->name))
 #define dma_writel(dw, name, val) \
-        __raw_writel((val), &(__dw_regs(dw)->name))
+        writel((val), &(__dw_regs(dw)->name))
 
 #define channel_set_bit(dw, reg, mask) \
         dma_writel(dw, reg, ((mask) << 8) | (mask))
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index e3854a8f0de0..6b396759e7f5 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -37,35 +37,16 @@
 
 #include "fsldma.h"
 
-static const char msg_ld_oom[] = "No free memory for link descriptor\n";
+#define chan_dbg(chan, fmt, arg...)                                     \
+        dev_dbg(chan->dev, "%s: " fmt, chan->name, ##arg)
+#define chan_err(chan, fmt, arg...)                                     \
+        dev_err(chan->dev, "%s: " fmt, chan->name, ##arg)
 
-static void dma_init(struct fsldma_chan *chan)
-{
-        /* Reset the channel */
-        DMA_OUT(chan, &chan->regs->mr, 0, 32);
+static const char msg_ld_oom[] = "No free memory for link descriptor";
 
-        switch (chan->feature & FSL_DMA_IP_MASK) {
-        case FSL_DMA_IP_85XX:
-                /* Set the channel to below modes:
-                 * EIE - Error interrupt enable
-                 * EOSIE - End of segments interrupt enable (basic mode)
-                 * EOLNIE - End of links interrupt enable
-                 * BWC - Bandwidth sharing among channels
-                 */
-                DMA_OUT(chan, &chan->regs->mr, FSL_DMA_MR_BWC
-                                | FSL_DMA_MR_EIE | FSL_DMA_MR_EOLNIE
-                                | FSL_DMA_MR_EOSIE, 32);
-                break;
-        case FSL_DMA_IP_83XX:
-                /* Set the channel to below modes:
-                 * EOTIE - End-of-transfer interrupt enable
-                 * PRC_RM - PCI read multiple
-                 */
-                DMA_OUT(chan, &chan->regs->mr, FSL_DMA_MR_EOTIE
-                                | FSL_DMA_MR_PRC_RM, 32);
-                break;
-        }
-}
+/*
+ * Register Helpers
+ */
 
 static void set_sr(struct fsldma_chan *chan, u32 val)
 {
@@ -77,14 +58,38 @@ static u32 get_sr(struct fsldma_chan *chan)
         return DMA_IN(chan, &chan->regs->sr, 32);
 }
 
+static void set_cdar(struct fsldma_chan *chan, dma_addr_t addr)
+{
+        DMA_OUT(chan, &chan->regs->cdar, addr | FSL_DMA_SNEN, 64);
+}
+
+static dma_addr_t get_cdar(struct fsldma_chan *chan)
+{
+        return DMA_IN(chan, &chan->regs->cdar, 64) & ~FSL_DMA_SNEN;
+}
+
+static u32 get_bcr(struct fsldma_chan *chan)
+{
+        return DMA_IN(chan, &chan->regs->bcr, 32);
+}
+
+/*
+ * Descriptor Helpers
+ */
+
 static void set_desc_cnt(struct fsldma_chan *chan,
                                 struct fsl_dma_ld_hw *hw, u32 count)
 {
         hw->count = CPU_TO_DMA(chan, count, 32);
 }
 
+static u32 get_desc_cnt(struct fsldma_chan *chan, struct fsl_desc_sw *desc)
+{
+        return DMA_TO_CPU(chan, desc->hw.count, 32);
+}
+
 static void set_desc_src(struct fsldma_chan *chan,
-                                struct fsl_dma_ld_hw *hw, dma_addr_t src)
+                         struct fsl_dma_ld_hw *hw, dma_addr_t src)
 {
         u64 snoop_bits;
 
@@ -93,8 +98,18 @@ static void set_desc_src(struct fsldma_chan *chan,
         hw->src_addr = CPU_TO_DMA(chan, snoop_bits | src, 64);
 }
 
+static dma_addr_t get_desc_src(struct fsldma_chan *chan,
+                               struct fsl_desc_sw *desc)
+{
+        u64 snoop_bits;
+
+        snoop_bits = ((chan->feature & FSL_DMA_IP_MASK) == FSL_DMA_IP_85XX)
+                ? ((u64)FSL_DMA_SATR_SREADTYPE_SNOOP_READ << 32) : 0;
+        return DMA_TO_CPU(chan, desc->hw.src_addr, 64) & ~snoop_bits;
+}
+
 static void set_desc_dst(struct fsldma_chan *chan,
-                                struct fsl_dma_ld_hw *hw, dma_addr_t dst)
+                         struct fsl_dma_ld_hw *hw, dma_addr_t dst)
 {
         u64 snoop_bits;
 
@@ -103,8 +118,18 @@ static void set_desc_dst(struct fsldma_chan *chan,
         hw->dst_addr = CPU_TO_DMA(chan, snoop_bits | dst, 64);
 }
 
+static dma_addr_t get_desc_dst(struct fsldma_chan *chan,
+                               struct fsl_desc_sw *desc)
+{
+        u64 snoop_bits;
+
+        snoop_bits = ((chan->feature & FSL_DMA_IP_MASK) == FSL_DMA_IP_85XX)
+                ? ((u64)FSL_DMA_DATR_DWRITETYPE_SNOOP_WRITE << 32) : 0;
+        return DMA_TO_CPU(chan, desc->hw.dst_addr, 64) & ~snoop_bits;
+}
+
 static void set_desc_next(struct fsldma_chan *chan,
-                                struct fsl_dma_ld_hw *hw, dma_addr_t next)
+                          struct fsl_dma_ld_hw *hw, dma_addr_t next)
 {
         u64 snoop_bits;
 
@@ -113,24 +138,46 @@ static void set_desc_next(struct fsldma_chan *chan,
         hw->next_ln_addr = CPU_TO_DMA(chan, snoop_bits | next, 64);
 }
 
-static void set_cdar(struct fsldma_chan *chan, dma_addr_t addr)
+static void set_ld_eol(struct fsldma_chan *chan, struct fsl_desc_sw *desc)
 {
-        DMA_OUT(chan, &chan->regs->cdar, addr | FSL_DMA_SNEN, 64);
-}
+        u64 snoop_bits;
 
-static dma_addr_t get_cdar(struct fsldma_chan *chan)
-{
-        return DMA_IN(chan, &chan->regs->cdar, 64) & ~FSL_DMA_SNEN;
-}
+        snoop_bits = ((chan->feature & FSL_DMA_IP_MASK) == FSL_DMA_IP_83XX)
+                ? FSL_DMA_SNEN : 0;
 
-static dma_addr_t get_ndar(struct fsldma_chan *chan)
-{
-        return DMA_IN(chan, &chan->regs->ndar, 64);
+        desc->hw.next_ln_addr = CPU_TO_DMA(chan,
+                DMA_TO_CPU(chan, desc->hw.next_ln_addr, 64) | FSL_DMA_EOL
+                        | snoop_bits, 64);
 }
 
-static u32 get_bcr(struct fsldma_chan *chan)
+/*
+ * DMA Engine Hardware Control Helpers
+ */
+
+static void dma_init(struct fsldma_chan *chan)
 {
-        return DMA_IN(chan, &chan->regs->bcr, 32);
+        /* Reset the channel */
+        DMA_OUT(chan, &chan->regs->mr, 0, 32);
+
+        switch (chan->feature & FSL_DMA_IP_MASK) {
+        case FSL_DMA_IP_85XX:
+                /* Set the channel to below modes:
+                 * EIE - Error interrupt enable
+                 * EOLNIE - End of links interrupt enable
+                 * BWC - Bandwidth sharing among channels
+                 */
+                DMA_OUT(chan, &chan->regs->mr, FSL_DMA_MR_BWC
+                                | FSL_DMA_MR_EIE | FSL_DMA_MR_EOLNIE, 32);
+                break;
+        case FSL_DMA_IP_83XX:
+                /* Set the channel to below modes:
+                 * EOTIE - End-of-transfer interrupt enable
+                 * PRC_RM - PCI read multiple
+                 */
+                DMA_OUT(chan, &chan->regs->mr, FSL_DMA_MR_EOTIE
+                                | FSL_DMA_MR_PRC_RM, 32);
+                break;
+        }
 }
 
 static int dma_is_idle(struct fsldma_chan *chan)
@@ -139,25 +186,32 @@ static int dma_is_idle(struct fsldma_chan *chan)
         return (!(sr & FSL_DMA_SR_CB)) || (sr & FSL_DMA_SR_CH);
 }
 
+/*
+ * Start the DMA controller
+ *
+ * Preconditions:
+ * - the CDAR register must point to the start descriptor
+ * - the MRn[CS] bit must be cleared
+ */
 static void dma_start(struct fsldma_chan *chan)
 {
         u32 mode;
 
         mode = DMA_IN(chan, &chan->regs->mr, 32);
 
-        if ((chan->feature & FSL_DMA_IP_MASK) == FSL_DMA_IP_85XX) {
-                if (chan->feature & FSL_DMA_CHAN_PAUSE_EXT) {
-                        DMA_OUT(chan, &chan->regs->bcr, 0, 32);
-                        mode |= FSL_DMA_MR_EMP_EN;
-                } else {
-                        mode &= ~FSL_DMA_MR_EMP_EN;
-                }
+        if (chan->feature & FSL_DMA_CHAN_PAUSE_EXT) {
+                DMA_OUT(chan, &chan->regs->bcr, 0, 32);
+                mode |= FSL_DMA_MR_EMP_EN;
+        } else {
+                mode &= ~FSL_DMA_MR_EMP_EN;
         }
 
-        if (chan->feature & FSL_DMA_CHAN_START_EXT)
+        if (chan->feature & FSL_DMA_CHAN_START_EXT) {
                 mode |= FSL_DMA_MR_EMS_EN;
-        else
+        } else {
+                mode &= ~FSL_DMA_MR_EMS_EN;
                 mode |= FSL_DMA_MR_CS;
+        }
 
         DMA_OUT(chan, &chan->regs->mr, mode, 32);
 }
@@ -167,13 +221,26 @@ static void dma_halt(struct fsldma_chan *chan)
         u32 mode;
         int i;
 
+        /* read the mode register */
         mode = DMA_IN(chan, &chan->regs->mr, 32);
-        mode |= FSL_DMA_MR_CA;
-        DMA_OUT(chan, &chan->regs->mr, mode, 32);
 
-        mode &= ~(FSL_DMA_MR_CS | FSL_DMA_MR_EMS_EN | FSL_DMA_MR_CA);
+        /*
+         * The 85xx controller supports channel abort, which will stop
+         * the current transfer. On 83xx, this bit is the transfer error
+         * mask bit, which should not be changed.
+         */
+        if ((chan->feature & FSL_DMA_IP_MASK) == FSL_DMA_IP_85XX) {
+                mode |= FSL_DMA_MR_CA;
+                DMA_OUT(chan, &chan->regs->mr, mode, 32);
+
+                mode &= ~FSL_DMA_MR_CA;
+        }
+
+        /* stop the DMA controller */
+        mode &= ~(FSL_DMA_MR_CS | FSL_DMA_MR_EMS_EN);
         DMA_OUT(chan, &chan->regs->mr, mode, 32);
 
+        /* wait for the DMA controller to become idle */
         for (i = 0; i < 100; i++) {
                 if (dma_is_idle(chan))
                         return;
@@ -182,20 +249,7 @@ static void dma_halt(struct fsldma_chan *chan)
         }
 
         if (!dma_is_idle(chan))
-                dev_err(chan->dev, "DMA halt timeout!\n");
-}
-
-static void set_ld_eol(struct fsldma_chan *chan,
-                        struct fsl_desc_sw *desc)
-{
-        u64 snoop_bits;
-
-        snoop_bits = ((chan->feature & FSL_DMA_IP_MASK) == FSL_DMA_IP_83XX)
-                ? FSL_DMA_SNEN : 0;
-
-        desc->hw.next_ln_addr = CPU_TO_DMA(chan,
-                DMA_TO_CPU(chan, desc->hw.next_ln_addr, 64) | FSL_DMA_EOL
-                        | snoop_bits, 64);
+                chan_err(chan, "DMA halt timeout!\n");
 }
 
 /**
@@ -321,8 +375,7 @@ static void fsl_chan_toggle_ext_start(struct fsldma_chan *chan, int enable)
                 chan->feature &= ~FSL_DMA_CHAN_START_EXT;
 }
 
-static void append_ld_queue(struct fsldma_chan *chan,
-                            struct fsl_desc_sw *desc)
+static void append_ld_queue(struct fsldma_chan *chan, struct fsl_desc_sw *desc)
 {
         struct fsl_desc_sw *tail = to_fsl_desc(chan->ld_pending.prev);
 
@@ -363,8 +416,8 @@ static dma_cookie_t fsl_dma_tx_submit(struct dma_async_tx_descriptor *tx)
         cookie = chan->common.cookie;
         list_for_each_entry(child, &desc->tx_list, node) {
                 cookie++;
-                if (cookie < 0)
-                        cookie = 1;
+                if (cookie < DMA_MIN_COOKIE)
+                        cookie = DMA_MIN_COOKIE;
 
                 child->async_tx.cookie = cookie;
         }
@@ -385,15 +438,14 @@ static dma_cookie_t fsl_dma_tx_submit(struct dma_async_tx_descriptor *tx)
  *
  * Return - The descriptor allocated. NULL for failed.
  */
-static struct fsl_desc_sw *fsl_dma_alloc_descriptor(
-                                        struct fsldma_chan *chan)
+static struct fsl_desc_sw *fsl_dma_alloc_descriptor(struct fsldma_chan *chan)
 {
         struct fsl_desc_sw *desc;
         dma_addr_t pdesc;
 
         desc = dma_pool_alloc(chan->desc_pool, GFP_ATOMIC, &pdesc);
         if (!desc) {
-                dev_dbg(chan->dev, "out of memory for link desc\n");
+                chan_dbg(chan, "out of memory for link descriptor\n");
                 return NULL;
         }
 
@@ -403,10 +455,13 @@ static struct fsl_desc_sw *fsl_dma_alloc_descriptor(
         desc->async_tx.tx_submit = fsl_dma_tx_submit;
         desc->async_tx.phys = pdesc;
 
+#ifdef FSL_DMA_LD_DEBUG
+        chan_dbg(chan, "LD %p allocated\n", desc);
+#endif
+
         return desc;
 }
 
-
 /**
  * fsl_dma_alloc_chan_resources - Allocate resources for DMA channel.
  * @chan : Freescale DMA channel
@@ -427,13 +482,11 @@ static int fsl_dma_alloc_chan_resources(struct dma_chan *dchan)
          * We need the descriptor to be aligned to 32bytes
          * for meeting FSL DMA specification requirement.
          */
-        chan->desc_pool = dma_pool_create("fsl_dma_engine_desc_pool",
-                                          chan->dev,
+        chan->desc_pool = dma_pool_create(chan->name, chan->dev,
                                           sizeof(struct fsl_desc_sw),
                                           __alignof__(struct fsl_desc_sw), 0);
         if (!chan->desc_pool) {
-                dev_err(chan->dev, "unable to allocate channel %d "
-                                   "descriptor pool\n", chan->id);
+                chan_err(chan, "unable to allocate descriptor pool\n");
                 return -ENOMEM;
         }
 
@@ -455,6 +508,9 @@ static void fsldma_free_desc_list(struct fsldma_chan *chan,
 
         list_for_each_entry_safe(desc, _desc, list, node) {
                 list_del(&desc->node);
+#ifdef FSL_DMA_LD_DEBUG
+                chan_dbg(chan, "LD %p free\n", desc);
+#endif
                 dma_pool_free(chan->desc_pool, desc, desc->async_tx.phys);
         }
 }
@@ -466,6 +522,9 @@ static void fsldma_free_desc_list_reverse(struct fsldma_chan *chan,
 
         list_for_each_entry_safe_reverse(desc, _desc, list, node) {
                 list_del(&desc->node);
+#ifdef FSL_DMA_LD_DEBUG
+                chan_dbg(chan, "LD %p free\n", desc);
+#endif
                 dma_pool_free(chan->desc_pool, desc, desc->async_tx.phys);
         }
 }
@@ -479,7 +538,7 @@ static void fsl_dma_free_chan_resources(struct dma_chan *dchan)
         struct fsldma_chan *chan = to_fsl_chan(dchan);
         unsigned long flags;
 
-        dev_dbg(chan->dev, "Free all channel resources.\n");
+        chan_dbg(chan, "free all channel resources\n");
         spin_lock_irqsave(&chan->desc_lock, flags);
         fsldma_free_desc_list(chan, &chan->ld_pending);
         fsldma_free_desc_list(chan, &chan->ld_running);
@@ -502,7 +561,7 @@ fsl_dma_prep_interrupt(struct dma_chan *dchan, unsigned long flags)
 
         new = fsl_dma_alloc_descriptor(chan);
         if (!new) {
-                dev_err(chan->dev, msg_ld_oom);
+                chan_err(chan, "%s\n", msg_ld_oom);
                 return NULL;
         }
 
@@ -512,14 +571,15 @@ fsl_dma_prep_interrupt(struct dma_chan *dchan, unsigned long flags)
         /* Insert the link descriptor to the LD ring */
         list_add_tail(&new->node, &new->tx_list);
 
-        /* Set End-of-link to the last link descriptor of new list*/
+        /* Set End-of-link to the last link descriptor of new list */
         set_ld_eol(chan, new);
 
         return &new->async_tx;
 }
 
-static struct dma_async_tx_descriptor *fsl_dma_prep_memcpy(
-        struct dma_chan *dchan, dma_addr_t dma_dst, dma_addr_t dma_src,
+static struct dma_async_tx_descriptor *
+fsl_dma_prep_memcpy(struct dma_chan *dchan,
+        dma_addr_t dma_dst, dma_addr_t dma_src,
         size_t len, unsigned long flags)
 {
         struct fsldma_chan *chan;
@@ -539,12 +599,9 @@ static struct dma_async_tx_descriptor *fsl_dma_prep_memcpy(
                 /* Allocate the link descriptor from DMA pool */
                 new = fsl_dma_alloc_descriptor(chan);
                 if (!new) {
-                        dev_err(chan->dev, msg_ld_oom);
+                        chan_err(chan, "%s\n", msg_ld_oom);
                         goto fail;
                 }
-#ifdef FSL_DMA_LD_DEBUG
-                dev_dbg(chan->dev, "new link desc alloc %p\n", new);
-#endif
 
                 copy = min(len, (size_t)FSL_DMA_BCR_MAX_CNT);
 
@@ -572,7 +629,7 @@ static struct dma_async_tx_descriptor *fsl_dma_prep_memcpy(
         new->async_tx.flags = flags; /* client is in control of this ack */
         new->async_tx.cookie = -EBUSY;
 
-        /* Set End-of-link to the last link descriptor of new list*/
+        /* Set End-of-link to the last link descriptor of new list */
         set_ld_eol(chan, new);
 
         return &first->async_tx;
@@ -627,12 +684,9 @@ static struct dma_async_tx_descriptor *fsl_dma_prep_sg(struct dma_chan *dchan,
                 /* allocate and populate the descriptor */
                 new = fsl_dma_alloc_descriptor(chan);
                 if (!new) {
-                        dev_err(chan->dev, msg_ld_oom);
+                        chan_err(chan, "%s\n", msg_ld_oom);
                         goto fail;
                 }
-#ifdef FSL_DMA_LD_DEBUG
-                dev_dbg(chan->dev, "new link desc alloc %p\n", new);
-#endif
 
                 set_desc_cnt(chan, &new->hw, len);
                 set_desc_src(chan, &new->hw, src);
@@ -744,14 +798,15 @@ static int fsl_dma_device_control(struct dma_chan *dchan,
 
         switch (cmd) {
         case DMA_TERMINATE_ALL:
+                spin_lock_irqsave(&chan->desc_lock, flags);
+
                 /* Halt the DMA engine */
                 dma_halt(chan);
 
-                spin_lock_irqsave(&chan->desc_lock, flags);
-
                 /* Remove and free all of the descriptors in the LD queue */
                 fsldma_free_desc_list(chan, &chan->ld_pending);
                 fsldma_free_desc_list(chan, &chan->ld_running);
+                chan->idle = true;
 
                 spin_unlock_irqrestore(&chan->desc_lock, flags);
                 return 0;
@@ -789,140 +844,87 @@ static int fsl_dma_device_control(struct dma_chan *dchan,
 }
 
 /**
- * fsl_dma_update_completed_cookie - Update the completed cookie.
- * @chan : Freescale DMA channel
- *
- * CONTEXT: hardirq
- */
-static void fsl_dma_update_completed_cookie(struct fsldma_chan *chan)
-{
-        struct fsl_desc_sw *desc;
-        unsigned long flags;
-        dma_cookie_t cookie;
-
-        spin_lock_irqsave(&chan->desc_lock, flags);
-
-        if (list_empty(&chan->ld_running)) {
-                dev_dbg(chan->dev, "no running descriptors\n");
-                goto out_unlock;
-        }
-
-        /* Get the last descriptor, update the cookie to that */
-        desc = to_fsl_desc(chan->ld_running.prev);
-        if (dma_is_idle(chan))
-                cookie = desc->async_tx.cookie;
-        else {
-                cookie = desc->async_tx.cookie - 1;
-                if (unlikely(cookie < DMA_MIN_COOKIE))
-                        cookie = DMA_MAX_COOKIE;
-        }
-
-        chan->completed_cookie = cookie;
-
-out_unlock:
-        spin_unlock_irqrestore(&chan->desc_lock, flags);
-}
-
-/**
- * fsldma_desc_status - Check the status of a descriptor
+ * fsldma_cleanup_descriptor - cleanup and free a single link descriptor
  * @chan: Freescale DMA channel
- * @desc: DMA SW descriptor
- *
- * This function will return the status of the given descriptor
- */
-static enum dma_status fsldma_desc_status(struct fsldma_chan *chan,
-                                          struct fsl_desc_sw *desc)
-{
-        return dma_async_is_complete(desc->async_tx.cookie,
-                                     chan->completed_cookie,
-                                     chan->common.cookie);
-}
-
-/**
- * fsl_chan_ld_cleanup - Clean up link descriptors
- * @chan : Freescale DMA channel
+ * @desc: descriptor to cleanup and free
  *
- * This function clean up the ld_queue of DMA channel.
+ * This function is used on a descriptor which has been executed by the DMA
+ * controller. It will run any callbacks, submit any dependencies, and then
+ * free the descriptor.
  */
-static void fsl_chan_ld_cleanup(struct fsldma_chan *chan)
+static void fsldma_cleanup_descriptor(struct fsldma_chan *chan,
+                                      struct fsl_desc_sw *desc)
 {
-        struct fsl_desc_sw *desc, *_desc;
-        unsigned long flags;
-
-        spin_lock_irqsave(&chan->desc_lock, flags);
-
-        dev_dbg(chan->dev, "chan completed_cookie = %d\n", chan->completed_cookie);
-        list_for_each_entry_safe(desc, _desc, &chan->ld_running, node) {
-                dma_async_tx_callback callback;
-                void *callback_param;
-
-                if (fsldma_desc_status(chan, desc) == DMA_IN_PROGRESS)
-                        break;
+        struct dma_async_tx_descriptor *txd = &desc->async_tx;
+        struct device *dev = chan->common.device->dev;
+        dma_addr_t src = get_desc_src(chan, desc);
+        dma_addr_t dst = get_desc_dst(chan, desc);
+        u32 len = get_desc_cnt(chan, desc);
+
+        /* Run the link descriptor callback function */
+        if (txd->callback) {
+#ifdef FSL_DMA_LD_DEBUG
+                chan_dbg(chan, "LD %p callback\n", desc);
+#endif
+                txd->callback(txd->callback_param);
+        }
 
-                /* Remove from the list of running transactions */
-                list_del(&desc->node);
+        /* Run any dependencies */
+        dma_run_dependencies(txd);
 
-                /* Run the link descriptor callback function */
-                callback = desc->async_tx.callback;
-                callback_param = desc->async_tx.callback_param;
-                if (callback) {
-                        spin_unlock_irqrestore(&chan->desc_lock, flags);
-                        dev_dbg(chan->dev, "LD %p callback\n", desc);
-                        callback(callback_param);
-                        spin_lock_irqsave(&chan->desc_lock, flags);
-                }
+        /* Unmap the dst buffer, if requested */
+        if (!(txd->flags & DMA_COMPL_SKIP_DEST_UNMAP)) {
+                if (txd->flags & DMA_COMPL_DEST_UNMAP_SINGLE)
+                        dma_unmap_single(dev, dst, len, DMA_FROM_DEVICE);
+                else
+                        dma_unmap_page(dev, dst, len, DMA_FROM_DEVICE);
+        }
 
-                /* Run any dependencies, then free the descriptor */
-                dma_run_dependencies(&desc->async_tx);
-                dma_pool_free(chan->desc_pool, desc, desc->async_tx.phys);
+        /* Unmap the src buffer, if requested */
+        if (!(txd->flags & DMA_COMPL_SKIP_SRC_UNMAP)) {
+                if (txd->flags & DMA_COMPL_SRC_UNMAP_SINGLE)
+                        dma_unmap_single(dev, src, len, DMA_TO_DEVICE);
+                else
+                        dma_unmap_page(dev, src, len, DMA_TO_DEVICE);
         }
 
-        spin_unlock_irqrestore(&chan->desc_lock, flags);
+#ifdef FSL_DMA_LD_DEBUG
+        chan_dbg(chan, "LD %p free\n", desc);
+#endif
+        dma_pool_free(chan->desc_pool, desc, txd->phys);
 }
 
 /**
  * fsl_chan_xfer_ld_queue - transfer any pending transactions
  * @chan : Freescale DMA channel
  *
- * This will make sure that any pending transactions will be run.
- * If the DMA controller is idle, it will be started. Otherwise,
- * the DMA controller's interrupt handler will start any pending
- * transactions when it becomes idle.
+ * HARDWARE STATE: idle
+ * LOCKING: must hold chan->desc_lock
  */
 static void fsl_chan_xfer_ld_queue(struct fsldma_chan *chan)
 {
         struct fsl_desc_sw *desc;
-        unsigned long flags;
-
-        spin_lock_irqsave(&chan->desc_lock, flags);
 
         /*
          * If the list of pending descriptors is empty, then we
          * don't need to do any work at all
          */
         if (list_empty(&chan->ld_pending)) {
-                dev_dbg(chan->dev, "no pending LDs\n");
-                goto out_unlock;
+                chan_dbg(chan, "no pending LDs\n");
+                return;
         }
 
         /*
-         * The DMA controller is not idle, which means the interrupt
-         * handler will start any queued transactions when it runs
-         * at the end of the current transaction
+         * The DMA controller is not idle, which means that the interrupt
+         * handler will start any queued transactions when it runs after
+         * this transaction finishes
          */
-        if (!dma_is_idle(chan)) {
-                dev_dbg(chan->dev, "DMA controller still busy\n");
-                goto out_unlock;
+        if (!chan->idle) {
+                chan_dbg(chan, "DMA controller still busy\n");
+                return;
         }
 
         /*
-         * TODO:
-         * make sure the dma_halt() function really un-wedges the
-         * controller as much as possible
-         */
-        dma_halt(chan);
-
-        /*
          * If there are some link descriptors which have not been
          * transferred, we need to start the controller
          */
@@ -931,18 +933,32 @@ static void fsl_chan_xfer_ld_queue(struct fsldma_chan *chan)
          * Move all elements from the queue of pending transactions
          * onto the list of running transactions
          */
+        chan_dbg(chan, "idle, starting controller\n");
         desc = list_first_entry(&chan->ld_pending, struct fsl_desc_sw, node);
         list_splice_tail_init(&chan->ld_pending, &chan->ld_running);
 
         /*
+         * The 85xx DMA controller doesn't clear the channel start bit
+         * automatically at the end of a transfer. Therefore we must clear
+         * it in software before starting the transfer.
+         */
+        if ((chan->feature & FSL_DMA_IP_MASK) == FSL_DMA_IP_85XX) {
+                u32 mode;
+
+                mode = DMA_IN(chan, &chan->regs->mr, 32);
+                mode &= ~FSL_DMA_MR_CS;
+                DMA_OUT(chan, &chan->regs->mr, mode, 32);
+        }
+
+        /*
          * Program the descriptor's address into the DMA controller,
          * then start the DMA transaction
          */
         set_cdar(chan, desc->async_tx.phys);
-        dma_start(chan);
+        get_cdar(chan);
 
-out_unlock:
-        spin_unlock_irqrestore(&chan->desc_lock, flags);
+        dma_start(chan);
+        chan->idle = false;
 }
 
 /**
@@ -952,7 +968,11 @@ out_unlock:
 static void fsl_dma_memcpy_issue_pending(struct dma_chan *dchan)
 {
         struct fsldma_chan *chan = to_fsl_chan(dchan);
+        unsigned long flags;
+
+        spin_lock_irqsave(&chan->desc_lock, flags);
         fsl_chan_xfer_ld_queue(chan);
+        spin_unlock_irqrestore(&chan->desc_lock, flags);
 }
 
 /**
@@ -964,16 +984,18 @@ static enum dma_status fsl_tx_status(struct dma_chan *dchan,
                                         struct dma_tx_state *txstate)
 {
         struct fsldma_chan *chan = to_fsl_chan(dchan);
-        dma_cookie_t last_used;
         dma_cookie_t last_complete;
+        dma_cookie_t last_used;
+        unsigned long flags;
 
-        fsl_chan_ld_cleanup(chan);
+        spin_lock_irqsave(&chan->desc_lock, flags);
 
-        last_used = dchan->cookie;
         last_complete = chan->completed_cookie;
+        last_used = dchan->cookie;
 
-        dma_set_tx_state(txstate, last_complete, last_used, 0);
+        spin_unlock_irqrestore(&chan->desc_lock, flags);
 
+        dma_set_tx_state(txstate, last_complete, last_used, 0);
         return dma_async_is_complete(cookie, last_complete, last_used);
 }
 
@@ -984,21 +1006,20 @@ static enum dma_status fsl_tx_status(struct dma_chan *dchan,
 static irqreturn_t fsldma_chan_irq(int irq, void *data)
 {
         struct fsldma_chan *chan = data;
-        int update_cookie = 0;
-        int xfer_ld_q = 0;
         u32 stat;
 
         /* save and clear the status register */
         stat = get_sr(chan);
         set_sr(chan, stat);
-        dev_dbg(chan->dev, "irq: channel %d, stat = 0x%x\n", chan->id, stat);
+        chan_dbg(chan, "irq: stat = 0x%x\n", stat);
 
+        /* check that this was really our device */
         stat &= ~(FSL_DMA_SR_CB | FSL_DMA_SR_CH);
         if (!stat)
                 return IRQ_NONE;
 
         if (stat & FSL_DMA_SR_TE)
-                dev_err(chan->dev, "Transfer Error!\n");
+                chan_err(chan, "Transfer Error!\n");
 
         /*
          * Programming Error
@@ -1006,29 +1027,10 @@ static irqreturn_t fsldma_chan_irq(int irq, void *data)
          * triger a PE interrupt.
          */
         if (stat & FSL_DMA_SR_PE) {
-                dev_dbg(chan->dev, "irq: Programming Error INT\n");
-                if (get_bcr(chan) == 0) {
-                        /* BCR register is 0, this is a DMA_INTERRUPT async_tx.
-                         * Now, update the completed cookie, and continue the
-                         * next uncompleted transfer.
-                         */
-                        update_cookie = 1;
-                        xfer_ld_q = 1;
-                }
+                chan_dbg(chan, "irq: Programming Error INT\n");
                 stat &= ~FSL_DMA_SR_PE;
-        }
-
-        /*
-         * If the link descriptor segment transfer finishes,
-         * we will recycle the used descriptor.
-         */
-        if (stat & FSL_DMA_SR_EOSI) {
-                dev_dbg(chan->dev, "irq: End-of-segments INT\n");
-                dev_dbg(chan->dev, "irq: clndar 0x%llx, nlndar 0x%llx\n",
-                        (unsigned long long)get_cdar(chan),
-                        (unsigned long long)get_ndar(chan));
-                stat &= ~FSL_DMA_SR_EOSI;
-                update_cookie = 1;
+                if (get_bcr(chan) != 0)
+                        chan_err(chan, "Programming Error!\n");
         }
 
         /*
@@ -1036,10 +1038,8 @@ static irqreturn_t fsldma_chan_irq(int irq, void *data)
          * and start the next transfer if it exist.
          */
         if (stat & FSL_DMA_SR_EOCDI) {
-                dev_dbg(chan->dev, "irq: End-of-Chain link INT\n");
+                chan_dbg(chan, "irq: End-of-Chain link INT\n");
                 stat &= ~FSL_DMA_SR_EOCDI;
-                update_cookie = 1;
-                xfer_ld_q = 1;
         }
 
         /*
@@ -1048,27 +1048,79 @@ static irqreturn_t fsldma_chan_irq(int irq, void *data)
          * prepare next transfer.
          */
         if (stat & FSL_DMA_SR_EOLNI) {
-                dev_dbg(chan->dev, "irq: End-of-link INT\n");
+                chan_dbg(chan, "irq: End-of-link INT\n");
                 stat &= ~FSL_DMA_SR_EOLNI;
-                xfer_ld_q = 1;
         }
 
-        if (update_cookie)
-                fsl_dma_update_completed_cookie(chan);
-        if (xfer_ld_q)
-                fsl_chan_xfer_ld_queue(chan);
+        /* check that the DMA controller is really idle */
+        if (!dma_is_idle(chan))
+                chan_err(chan, "irq: controller not idle!\n");
+
+        /* check that we handled all of the bits */
         if (stat)
-                dev_dbg(chan->dev, "irq: unhandled sr 0x%02x\n", stat);
+                chan_err(chan, "irq: unhandled sr 0x%08x\n", stat);
 
-        dev_dbg(chan->dev, "irq: Exit\n");
+        /*
+         * Schedule the tasklet to handle all cleanup of the current
+         * transaction. It will start a new transaction if there is
+         * one pending.
+         */
         tasklet_schedule(&chan->tasklet);
+        chan_dbg(chan, "irq: Exit\n");
         return IRQ_HANDLED;
 }
 
 static void dma_do_tasklet(unsigned long data)
 {
         struct fsldma_chan *chan = (struct fsldma_chan *)data;
-        fsl_chan_ld_cleanup(chan);
+        struct fsl_desc_sw *desc, *_desc;
+        LIST_HEAD(ld_cleanup);
+        unsigned long flags;
+
+        chan_dbg(chan, "tasklet entry\n");
+
+        spin_lock_irqsave(&chan->desc_lock, flags);
+
+        /* update the cookie if we have some descriptors to cleanup */
+        if (!list_empty(&chan->ld_running)) {
+                dma_cookie_t cookie;
+
+                desc = to_fsl_desc(chan->ld_running.prev);
+                cookie = desc->async_tx.cookie;
+
+                chan->completed_cookie = cookie;
+                chan_dbg(chan, "completed_cookie=%d\n", cookie);
+        }
+
+        /*
+         * move the descriptors to a temporary list so we can drop the lock
+         * during the entire cleanup operation
+         */
+        list_splice_tail_init(&chan->ld_running, &ld_cleanup);
+
+        /* the hardware is now idle and ready for more */
+        chan->idle = true;
+
+        /*
+         * Start any pending transactions automatically
+         *
+         * In the ideal case, we keep the DMA controller busy while we go
+         * ahead and free the descriptors below.
+         */
+        fsl_chan_xfer_ld_queue(chan);
+        spin_unlock_irqrestore(&chan->desc_lock, flags);
+
+        /* Run the callback for each descriptor, in order */
+        list_for_each_entry_safe(desc, _desc, &ld_cleanup, node) {
+
+                /* Remove from the list of transactions */
+                list_del(&desc->node);
+
+                /* Run all cleanup for this descriptor */
+                fsldma_cleanup_descriptor(chan, desc);
+        }
+
+        chan_dbg(chan, "tasklet exit\n");
 }
 
 static irqreturn_t fsldma_ctrl_irq(int irq, void *data)
@@ -1116,7 +1168,7 @@ static void fsldma_free_irqs(struct fsldma_device *fdev)
         for (i = 0; i < FSL_DMA_MAX_CHANS_PER_DEVICE; i++) {
                 chan = fdev->chan[i];
                 if (chan && chan->irq != NO_IRQ) {
-                        dev_dbg(fdev->dev, "free channel %d IRQ\n", chan->id);
+                        chan_dbg(chan, "free per-channel IRQ\n");
                         free_irq(chan->irq, chan);
                 }
         }
@@ -1143,19 +1195,16 @@ static int fsldma_request_irqs(struct fsldma_device *fdev)
                         continue;
 
                 if (chan->irq == NO_IRQ) {
-                        dev_err(fdev->dev, "no interrupts property defined for "
-                                           "DMA channel %d. Please fix your "
-                                           "device tree\n", chan->id);
+                        chan_err(chan, "interrupts property missing in device tree\n");
                         ret = -ENODEV;
                         goto out_unwind;
                 }
 
-                dev_dbg(fdev->dev, "request channel %d IRQ\n", chan->id);
+                chan_dbg(chan, "request per-channel IRQ\n");
                 ret = request_irq(chan->irq, fsldma_chan_irq, IRQF_SHARED,
                                   "fsldma-chan", chan);
                 if (ret) {
-                        dev_err(fdev->dev, "unable to request IRQ for DMA "
-                                           "channel %d\n", chan->id);
+                        chan_err(chan, "unable to request per-channel IRQ\n");
                         goto out_unwind;
                 }
         }
@@ -1230,6 +1279,7 @@ static int __devinit fsl_dma_chan_probe(struct fsldma_device *fdev,
 
         fdev->chan[chan->id] = chan;
         tasklet_init(&chan->tasklet, dma_do_tasklet, (unsigned long)chan);
+        snprintf(chan->name, sizeof(chan->name), "chan%d", chan->id);
 
         /* Initialize the channel */
         dma_init(chan);
@@ -1250,6 +1300,7 @@ static int __devinit fsl_dma_chan_probe(struct fsldma_device *fdev,
         spin_lock_init(&chan->desc_lock);
         INIT_LIST_HEAD(&chan->ld_pending);
         INIT_LIST_HEAD(&chan->ld_running);
+        chan->idle = true;
 
         chan->common.device = &fdev->common;
 
diff --git a/drivers/dma/fsldma.h b/drivers/dma/fsldma.h
index ba9f403c0fbe..9cb5aa57c677 100644
--- a/drivers/dma/fsldma.h
+++ b/drivers/dma/fsldma.h
@@ -102,8 +102,8 @@ struct fsl_desc_sw {
 } __attribute__((aligned(32)));
 
 struct fsldma_chan_regs {
-        u32 mr; /* 0x00 - Mode Register */
-        u32 sr; /* 0x04 - Status Register */
+        u32 mr;         /* 0x00 - Mode Register */
+        u32 sr;         /* 0x04 - Status Register */
         u64 cdar;       /* 0x08 - Current descriptor address register */
         u64 sar;        /* 0x10 - Source Address Register */
         u64 dar;        /* 0x18 - Destination Address Register */
@@ -135,6 +135,7 @@ struct fsldma_device {
 #define FSL_DMA_CHAN_START_EXT  0x00002000
 
 struct fsldma_chan {
+        char name[8];                   /* Channel name */
         struct fsldma_chan_regs __iomem *regs;
         dma_cookie_t completed_cookie;  /* The maximum cookie completed */
         spinlock_t desc_lock;           /* Descriptor operation lock */
@@ -147,6 +148,7 @@ struct fsldma_chan {
         int id;                         /* Raw id of this channel */
         struct tasklet_struct tasklet;
         u32 feature;
+        bool idle;                      /* DMA controller is idle */
 
         void (*toggle_ext_pause)(struct fsldma_chan *fsl_chan, int enable);
         void (*toggle_ext_start)(struct fsldma_chan *fsl_chan, int enable);
diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
new file mode 100644
index 000000000000..88aad4f54002
--- /dev/null
+++ b/drivers/dma/mxs-dma.c
@@ -0,0 +1,724 @@
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * Refer to drivers/dma/imx-sdma.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/clk.h>
+#include <linux/wait.h>
+#include <linux/sched.h>
+#include <linux/semaphore.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/dmaengine.h>
+#include <linux/delay.h>
+
+#include <asm/irq.h>
+#include <mach/mxs.h>
+#include <mach/dma.h>
+#include <mach/common.h>
+
+/*
+ * NOTE: The term "PIO" throughout the mxs-dma implementation means
+ * PIO mode of mxs apbh-dma and apbx-dma.  With this working mode,
+ * dma can program the controller registers of peripheral devices.
+ */
+
+#define MXS_DMA_APBH            0
+#define MXS_DMA_APBX            1
+#define dma_is_apbh()           (mxs_dma->dev_id == MXS_DMA_APBH)
+
+#define APBH_VERSION_LATEST     3
+#define apbh_is_old()           (mxs_dma->version < APBH_VERSION_LATEST)
+
+#define HW_APBHX_CTRL0                          0x000
+#define BM_APBH_CTRL0_APB_BURST8_EN             (1 << 29)
+#define BM_APBH_CTRL0_APB_BURST_EN              (1 << 28)
+#define BP_APBH_CTRL0_CLKGATE_CHANNEL           8
+#define BP_APBH_CTRL0_RESET_CHANNEL             16
+#define HW_APBHX_CTRL1                          0x010
+#define HW_APBHX_CTRL2                          0x020
+#define HW_APBHX_CHANNEL_CTRL                   0x030
+#define BP_APBHX_CHANNEL_CTRL_RESET_CHANNEL     16
+#define HW_APBH_VERSION                         (cpu_is_mx23() ? 0x3f0 : 0x800)
+#define HW_APBX_VERSION                         0x800
+#define BP_APBHX_VERSION_MAJOR                  24
+#define HW_APBHX_CHn_NXTCMDAR(n) \
+        (((dma_is_apbh() && apbh_is_old()) ? 0x050 : 0x110) + (n) * 0x70)
+#define HW_APBHX_CHn_SEMA(n) \
+        (((dma_is_apbh() && apbh_is_old()) ? 0x080 : 0x140) + (n) * 0x70)
+
+/*
+ * ccw bits definitions
+ *
+ * COMMAND:             0..1    (2)
+ * CHAIN:               2       (1)
+ * IRQ:                 3       (1)
+ * NAND_LOCK:           4       (1) - not implemented
+ * NAND_WAIT4READY:     5       (1) - not implemented
+ * DEC_SEM:             6       (1)
+ * WAIT4END:            7       (1)
+ * HALT_ON_TERMINATE:   8       (1)
+ * TERMINATE_FLUSH:     9       (1)
+ * RESERVED:            10..11  (2)
+ * PIO_NUM:             12..15  (4)
+ */
+#define BP_CCW_COMMAND          0
+#define BM_CCW_COMMAND          (3 << 0)
+#define CCW_CHAIN               (1 << 2)
+#define CCW_IRQ                 (1 << 3)
+#define CCW_DEC_SEM             (1 << 6)
+#define CCW_WAIT4END            (1 << 7)
+#define CCW_HALT_ON_TERM        (1 << 8)
+#define CCW_TERM_FLUSH          (1 << 9)
+#define BP_CCW_PIO_NUM          12
+#define BM_CCW_PIO_NUM          (0xf << 12)
+
+#define BF_CCW(value, field)    (((value) << BP_CCW_##field) & BM_CCW_##field)
+
+#define MXS_DMA_CMD_NO_XFER     0
+#define MXS_DMA_CMD_WRITE       1
+#define MXS_DMA_CMD_READ        2
+#define MXS_DMA_CMD_DMA_SENSE   3       /* not implemented */
+
+struct mxs_dma_ccw {
+        u32             next;
+        u16             bits;
+        u16             xfer_bytes;
+#define MAX_XFER_BYTES  0xff00
+        u32             bufaddr;
+#define MXS_PIO_WORDS   16
+        u32             pio_words[MXS_PIO_WORDS];
+};
+
+#define NUM_CCW (int)(PAGE_SIZE / sizeof(struct mxs_dma_ccw))
+
+struct mxs_dma_chan {
+        struct mxs_dma_engine           *mxs_dma;
+        struct dma_chan                 chan;
+        struct dma_async_tx_descriptor  desc;
+        struct tasklet_struct           tasklet;
+        int                             chan_irq;
+        struct mxs_dma_ccw              *ccw;
+        dma_addr_t                      ccw_phys;
+        dma_cookie_t                    last_completed;
+        enum dma_status                 status;
+        unsigned int                    flags;
+#define MXS_DMA_SG_LOOP                 (1 << 0)
+};
+
+#define MXS_DMA_CHANNELS                16
+#define MXS_DMA_CHANNELS_MASK           0xffff
+
+struct mxs_dma_engine {
+        int                             dev_id;
+        unsigned int                    version;
+        void __iomem                    *base;
+        struct clk                      *clk;
+        struct dma_device               dma_device;
+        struct device_dma_parameters    dma_parms;
+        struct mxs_dma_chan             mxs_chans[MXS_DMA_CHANNELS];
+};
+
+static void mxs_dma_reset_chan(struct mxs_dma_chan *mxs_chan)
+{
+        struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
+        int chan_id = mxs_chan->chan.chan_id;
+
+        if (dma_is_apbh() && apbh_is_old())
+                writel(1 << (chan_id + BP_APBH_CTRL0_RESET_CHANNEL),
+                        mxs_dma->base + HW_APBHX_CTRL0 + MXS_SET_ADDR);
+        else
+                writel(1 << (chan_id + BP_APBHX_CHANNEL_CTRL_RESET_CHANNEL),
+                        mxs_dma->base + HW_APBHX_CHANNEL_CTRL + MXS_SET_ADDR);
+}
+
+static void mxs_dma_enable_chan(struct mxs_dma_chan *mxs_chan)
+{
+        struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
+        int chan_id = mxs_chan->chan.chan_id;
+
+        /* set cmd_addr up */
+        writel(mxs_chan->ccw_phys,
+                mxs_dma->base + HW_APBHX_CHn_NXTCMDAR(chan_id));
+
+        /* enable apbh channel clock */
+        if (dma_is_apbh()) {
+                if (apbh_is_old())
+                        writel(1 << (chan_id + BP_APBH_CTRL0_CLKGATE_CHANNEL),
+                                mxs_dma->base + HW_APBHX_CTRL0 + MXS_CLR_ADDR);
+                else
+                        writel(1 << chan_id,
+                                mxs_dma->base + HW_APBHX_CTRL0 + MXS_CLR_ADDR);
+        }
+
+        /* write 1 to SEMA to kick off the channel */
+        writel(1, mxs_dma->base + HW_APBHX_CHn_SEMA(chan_id));
+}
+
+static void mxs_dma_disable_chan(struct mxs_dma_chan *mxs_chan)
+{
+        struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
+        int chan_id = mxs_chan->chan.chan_id;
+
+        /* disable apbh channel clock */
+        if (dma_is_apbh()) {
+                if (apbh_is_old())
+                        writel(1 << (chan_id + BP_APBH_CTRL0_CLKGATE_CHANNEL),
+                                mxs_dma->base + HW_APBHX_CTRL0 + MXS_SET_ADDR);
+                else
+                        writel(1 << chan_id,
+                                mxs_dma->base + HW_APBHX_CTRL0 + MXS_SET_ADDR);
+        }
+
+        mxs_chan->status = DMA_SUCCESS;
+}
+
+static void mxs_dma_pause_chan(struct mxs_dma_chan *mxs_chan)
+{
+        struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
+        int chan_id = mxs_chan->chan.chan_id;
+
+        /* freeze the channel */
+        if (dma_is_apbh() && apbh_is_old())
+                writel(1 << chan_id,
+                        mxs_dma->base + HW_APBHX_CTRL0 + MXS_SET_ADDR);
+        else
+                writel(1 << chan_id,
+                        mxs_dma->base + HW_APBHX_CHANNEL_CTRL + MXS_SET_ADDR);
+
+        mxs_chan->status = DMA_PAUSED;
+}
+
+static void mxs_dma_resume_chan(struct mxs_dma_chan *mxs_chan)
+{
+        struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
+        int chan_id = mxs_chan->chan.chan_id;
+
+        /* unfreeze the channel */
+        if (dma_is_apbh() && apbh_is_old())
+                writel(1 << chan_id,
+                        mxs_dma->base + HW_APBHX_CTRL0 + MXS_CLR_ADDR);
+        else
+                writel(1 << chan_id,
+                        mxs_dma->base + HW_APBHX_CHANNEL_CTRL + MXS_CLR_ADDR);
+
+        mxs_chan->status = DMA_IN_PROGRESS;
+}
+
+static dma_cookie_t mxs_dma_assign_cookie(struct mxs_dma_chan *mxs_chan)
+{
+        dma_cookie_t cookie = mxs_chan->chan.cookie;
+
+        if (++cookie < 0)
+                cookie = 1;
+
+        mxs_chan->chan.cookie = cookie;
+        mxs_chan->desc.cookie = cookie;
+
+        return cookie;
+}
+
+static struct mxs_dma_chan *to_mxs_dma_chan(struct dma_chan *chan)
+{
+        return container_of(chan, struct mxs_dma_chan, chan);
+}
+
+static dma_cookie_t mxs_dma_tx_submit(struct dma_async_tx_descriptor *tx)
+{
+        struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(tx->chan);
+
+        mxs_dma_enable_chan(mxs_chan);
+
+        return mxs_dma_assign_cookie(mxs_chan);
+}
+
+static void mxs_dma_tasklet(unsigned long data)
+{
+        struct mxs_dma_chan *mxs_chan = (struct mxs_dma_chan *) data;
+
+        if (mxs_chan->desc.callback)
+                mxs_chan->desc.callback(mxs_chan->desc.callback_param);
+}
+
+static irqreturn_t mxs_dma_int_handler(int irq, void *dev_id)
+{
+        struct mxs_dma_engine *mxs_dma = dev_id;
+        u32 stat1, stat2;
+
+        /* completion status */
+        stat1 = readl(mxs_dma->base + HW_APBHX_CTRL1);
+        stat1 &= MXS_DMA_CHANNELS_MASK;
+        writel(stat1, mxs_dma->base + HW_APBHX_CTRL1 + MXS_CLR_ADDR);
+
+        /* error status */
+        stat2 = readl(mxs_dma->base + HW_APBHX_CTRL2);
+        writel(stat2, mxs_dma->base + HW_APBHX_CTRL2 + MXS_CLR_ADDR);
+
+        /*
+         * When both completion and error of termination bits set at the
+         * same time, we do not take it as an error.  IOW, it only becomes
+         * an error we need to handler here in case of ether it's (1) an bus
+         * error or (2) a termination error with no completion.
+         */
+        stat2 = ((stat2 >> MXS_DMA_CHANNELS) & stat2) | /* (1) */
+                (~(stat2 >> MXS_DMA_CHANNELS) & stat2 & ~stat1); /* (2) */
+
+        /* combine error and completion status for checking */
+        stat1 = (stat2 << MXS_DMA_CHANNELS) | stat1;
+        while (stat1) {
+                int channel = fls(stat1) - 1;
+                struct mxs_dma_chan *mxs_chan =
+                        &mxs_dma->mxs_chans[channel % MXS_DMA_CHANNELS];
+
+                if (channel >= MXS_DMA_CHANNELS) {
+                        dev_dbg(mxs_dma->dma_device.dev,
+                                "%s: error in channel %d\n", __func__,
+                                channel - MXS_DMA_CHANNELS);
+                        mxs_chan->status = DMA_ERROR;
+                        mxs_dma_reset_chan(mxs_chan);
+                } else {
+                        if (mxs_chan->flags & MXS_DMA_SG_LOOP)
+                                mxs_chan->status = DMA_IN_PROGRESS;
+                        else
+                                mxs_chan->status = DMA_SUCCESS;
+                }
+
+                stat1 &= ~(1 << channel);
+
+                if (mxs_chan->status == DMA_SUCCESS)
+                        mxs_chan->last_completed = mxs_chan->desc.cookie;
+
+                /* schedule tasklet on this channel */
+                tasklet_schedule(&mxs_chan->tasklet);
+        }
+
+        return IRQ_HANDLED;
+}
+
+static int mxs_dma_alloc_chan_resources(struct dma_chan *chan)
+{
+        struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
+        struct mxs_dma_data *data = chan->private;
+        struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
+        int ret;
+
+        if (!data)
+                return -EINVAL;
+
+        mxs_chan->chan_irq = data->chan_irq;
+
+        mxs_chan->ccw = dma_alloc_coherent(mxs_dma->dma_device.dev, PAGE_SIZE,
+                                &mxs_chan->ccw_phys, GFP_KERNEL);
+        if (!mxs_chan->ccw) {
+                ret = -ENOMEM;
+                goto err_alloc;
+        }
+
+        memset(mxs_chan->ccw, 0, PAGE_SIZE);
+
+        ret = request_irq(mxs_chan->chan_irq, mxs_dma_int_handler,
+                                0, "mxs-dma", mxs_dma);
+        if (ret)
+                goto err_irq;
+
+        ret = clk_enable(mxs_dma->clk);
+        if (ret)
+                goto err_clk;
+
+        mxs_dma_reset_chan(mxs_chan);
+
+        dma_async_tx_descriptor_init(&mxs_chan->desc, chan);
+        mxs_chan->desc.tx_submit = mxs_dma_tx_submit;
+
+        /* the descriptor is ready */
+        async_tx_ack(&mxs_chan->desc);
+
+        return 0;
+
+err_clk:
+        free_irq(mxs_chan->chan_irq, mxs_dma);
+err_irq:
+        dma_free_coherent(mxs_dma->dma_device.dev, PAGE_SIZE,
+                        mxs_chan->ccw, mxs_chan->ccw_phys);
+err_alloc:
+        return ret;
+}
+
+static void mxs_dma_free_chan_resources(struct dma_chan *chan)
+{
+        struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
+        struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
+
+        mxs_dma_disable_chan(mxs_chan);
+
+        free_irq(mxs_chan->chan_irq, mxs_dma);
+
+        dma_free_coherent(mxs_dma->dma_device.dev, PAGE_SIZE,
+                        mxs_chan->ccw, mxs_chan->ccw_phys);
+
+        clk_disable(mxs_dma->clk);
+}
+
+static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
+                struct dma_chan *chan, struct scatterlist *sgl,
+                unsigned int sg_len, enum dma_data_direction direction,
+                unsigned long append)
+{
+        struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
+        struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
+        struct mxs_dma_ccw *ccw;
+        struct scatterlist *sg;
+        int i, j;
+        u32 *pio;
+        static int idx;
+
+        if (mxs_chan->status == DMA_IN_PROGRESS && !append)
+                return NULL;
+
+        if (sg_len + (append ? idx : 0) > NUM_CCW) {
+                dev_err(mxs_dma->dma_device.dev,
+                                "maximum number of sg exceeded: %d > %d\n",
+                                sg_len, NUM_CCW);
+                goto err_out;
+        }
+
+        mxs_chan->status = DMA_IN_PROGRESS;
+        mxs_chan->flags = 0;
+
+        /*
+         * If the sg is prepared with append flag set, the sg
+         * will be appended to the last prepared sg.
+         */
+        if (append) {
+                BUG_ON(idx < 1);
+                ccw = &mxs_chan->ccw[idx - 1];
+                ccw->next = mxs_chan->ccw_phys + sizeof(*ccw) * idx;
+                ccw->bits |= CCW_CHAIN;
+                ccw->bits &= ~CCW_IRQ;
+                ccw->bits &= ~CCW_DEC_SEM;
+                ccw->bits &= ~CCW_WAIT4END;
+        } else {
+                idx = 0;
+        }
+
+        if (direction == DMA_NONE) {
+                ccw = &mxs_chan->ccw[idx++];
+                pio = (u32 *) sgl;
+
+                for (j = 0; j < sg_len;)
+                        ccw->pio_words[j++] = *pio++;
+
+                ccw->bits = 0;
+                ccw->bits |= CCW_IRQ;
+                ccw->bits |= CCW_DEC_SEM;
+                ccw->bits |= CCW_WAIT4END;
+                ccw->bits |= CCW_HALT_ON_TERM;
+                ccw->bits |= CCW_TERM_FLUSH;
+                ccw->bits |= BF_CCW(sg_len, PIO_NUM);
+                ccw->bits |= BF_CCW(MXS_DMA_CMD_NO_XFER, COMMAND);
+        } else {
+                for_each_sg(sgl, sg, sg_len, i) {
+                        if (sg->length > MAX_XFER_BYTES) {
+                                dev_err(mxs_dma->dma_device.dev, "maximum bytes for sg entry exceeded: %d > %d\n",
+                                                sg->length, MAX_XFER_BYTES);
+                                goto err_out;
+                        }
+
+                        ccw = &mxs_chan->ccw[idx++];
+
+                        ccw->next = mxs_chan->ccw_phys + sizeof(*ccw) * idx;
+                        ccw->bufaddr = sg->dma_address;
+                        ccw->xfer_bytes = sg->length;
+
+                        ccw->bits = 0;
+                        ccw->bits |= CCW_CHAIN;
+                        ccw->bits |= CCW_HALT_ON_TERM;
+                        ccw->bits |= CCW_TERM_FLUSH;
+                        ccw->bits |= BF_CCW(direction == DMA_FROM_DEVICE ?
+                                        MXS_DMA_CMD_WRITE : MXS_DMA_CMD_READ,
+                                        COMMAND);
+
+                        if (i + 1 == sg_len) {
+                                ccw->bits &= ~CCW_CHAIN;
+                                ccw->bits |= CCW_IRQ;
+                                ccw->bits |= CCW_DEC_SEM;
+                                ccw->bits |= CCW_WAIT4END;
+                        }
+                }
+        }
+
+        return &mxs_chan->desc;
+
+err_out:
+        mxs_chan->status = DMA_ERROR;
+        return NULL;
+}
+
+static struct dma_async_tx_descriptor *mxs_dma_prep_dma_cyclic(
+                struct dma_chan *chan, dma_addr_t dma_addr, size_t buf_len,
+                size_t period_len, enum dma_data_direction direction)
+{
+        struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
+        struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
+        int num_periods = buf_len / period_len;
+        int i = 0, buf = 0;
+
+        if (mxs_chan->status == DMA_IN_PROGRESS)
+                return NULL;
+
+        mxs_chan->status = DMA_IN_PROGRESS;
+        mxs_chan->flags |= MXS_DMA_SG_LOOP;
+
+        if (num_periods > NUM_CCW) {
+                dev_err(mxs_dma->dma_device.dev,
+                                "maximum number of sg exceeded: %d > %d\n",
+                                num_periods, NUM_CCW);
+                goto err_out;
+        }
+
+        if (period_len > MAX_XFER_BYTES) {
+                dev_err(mxs_dma->dma_device.dev,
+                                "maximum period size exceeded: %d > %d\n",
+                                period_len, MAX_XFER_BYTES);
+                goto err_out;
+        }
+
+        while (buf < buf_len) {
+                struct mxs_dma_ccw *ccw = &mxs_chan->ccw[i];
+
+                if (i + 1 == num_periods)
+                        ccw->next = mxs_chan->ccw_phys;
+                else
+                        ccw->next = mxs_chan->ccw_phys + sizeof(*ccw) * (i + 1);
+
+                ccw->bufaddr = dma_addr;
+                ccw->xfer_bytes = period_len;
+
+                ccw->bits = 0;
+                ccw->bits |= CCW_CHAIN;
+                ccw->bits |= CCW_IRQ;
+                ccw->bits |= CCW_HALT_ON_TERM;
+                ccw->bits |= CCW_TERM_FLUSH;
+                ccw->bits |= BF_CCW(direction == DMA_FROM_DEVICE ?
+                                MXS_DMA_CMD_WRITE : MXS_DMA_CMD_READ, COMMAND);
+
+                dma_addr += period_len;
+                buf += period_len;
+
+                i++;
+        }
+
+        return &mxs_chan->desc;
+
+err_out:
+        mxs_chan->status = DMA_ERROR;
+        return NULL;
+}
+
+static int mxs_dma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
+                unsigned long arg)
+{
+        struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
+        int ret = 0;
+
+        switch (cmd) {
+        case DMA_TERMINATE_ALL:
+                mxs_dma_disable_chan(mxs_chan);
+                break;
+        case DMA_PAUSE:
+                mxs_dma_pause_chan(mxs_chan);
+                break;
+        case DMA_RESUME:
+                mxs_dma_resume_chan(mxs_chan);
+                break;
+        default:
+                ret = -ENOSYS;
+        }
+
+        return ret;
+}
+
+static enum dma_status mxs_dma_tx_status(struct dma_chan *chan,
+                        dma_cookie_t cookie, struct dma_tx_state *txstate)
+{
+        struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
+        dma_cookie_t last_used;
+
+        last_used = chan->cookie;
+        dma_set_tx_state(txstate, mxs_chan->last_completed, last_used, 0);
+
+        return mxs_chan->status;
+}
+
+static void mxs_dma_issue_pending(struct dma_chan *chan)
+{
+        /*
+         * Nothing to do. We only have a single descriptor.
+         */
+}
+
+static int __init mxs_dma_init(struct mxs_dma_engine *mxs_dma)
+{
+        int ret;
+
+        ret = clk_enable(mxs_dma->clk);
+        if (ret)
+                goto err_out;
+
+        ret = mxs_reset_block(mxs_dma->base);
+        if (ret)
+                goto err_out;
+
+        /* only major version matters */
+        mxs_dma->version = readl(mxs_dma->base +
+                                ((mxs_dma->dev_id == MXS_DMA_APBX) ?
+                                HW_APBX_VERSION : HW_APBH_VERSION)) >>
+                                BP_APBHX_VERSION_MAJOR;
+
+        /* enable apbh burst */
+        if (dma_is_apbh()) {
+                writel(BM_APBH_CTRL0_APB_BURST_EN,
+                        mxs_dma->base + HW_APBHX_CTRL0 + MXS_SET_ADDR);
+                writel(BM_APBH_CTRL0_APB_BURST8_EN,
+                        mxs_dma->base + HW_APBHX_CTRL0 + MXS_SET_ADDR);
+        }
+
+        /* enable irq for all the channels */
+        writel(MXS_DMA_CHANNELS_MASK << MXS_DMA_CHANNELS,
+                mxs_dma->base + HW_APBHX_CTRL1 + MXS_SET_ADDR);
+
+        clk_disable(mxs_dma->clk);
+
+        return 0;
+
+err_out:
+        return ret;
+}
+
+static int __init mxs_dma_probe(struct platform_device *pdev)
+{
+        const struct platform_device_id *id_entry =
+                                platform_get_device_id(pdev);
+        struct mxs_dma_engine *mxs_dma;
+        struct resource *iores;
+        int ret, i;
+
+        mxs_dma = kzalloc(sizeof(*mxs_dma), GFP_KERNEL);
+        if (!mxs_dma)
+                return -ENOMEM;
+
+        mxs_dma->dev_id = id_entry->driver_data;
+
+        iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+        if (!request_mem_region(iores->start, resource_size(iores),
+                                pdev->name)) {
+                ret = -EBUSY;
+                goto err_request_region;
+        }
+
+        mxs_dma->base = ioremap(iores->start, resource_size(iores));
+        if (!mxs_dma->base) {
+                ret = -ENOMEM;
+                goto err_ioremap;
+        }
+
+        mxs_dma->clk = clk_get(&pdev->dev, NULL);
+        if (IS_ERR(mxs_dma->clk)) {
+                ret = PTR_ERR(mxs_dma->clk);
+                goto err_clk;
+        }
+
+        dma_cap_set(DMA_SLAVE, mxs_dma->dma_device.cap_mask);
+        dma_cap_set(DMA_CYCLIC, mxs_dma->dma_device.cap_mask);
+
+        INIT_LIST_HEAD(&mxs_dma->dma_device.channels);
+
+        /* Initialize channel parameters */
+        for (i = 0; i < MXS_DMA_CHANNELS; i++) {
+                struct mxs_dma_chan *mxs_chan = &mxs_dma->mxs_chans[i];
+
+                mxs_chan->mxs_dma = mxs_dma;
+                mxs_chan->chan.device = &mxs_dma->dma_device;
+
+                tasklet_init(&mxs_chan->tasklet, mxs_dma_tasklet,
+                             (unsigned long) mxs_chan);
+
+
+                /* Add the channel to mxs_chan list */
+                list_add_tail(&mxs_chan->chan.device_node,
+                        &mxs_dma->dma_device.channels);
+        }
+
+        ret = mxs_dma_init(mxs_dma);
+        if (ret)
+                goto err_init;
+
+        mxs_dma->dma_device.dev = &pdev->dev;
+
+        /* mxs_dma gets 65535 bytes maximum sg size */
+        mxs_dma->dma_device.dev->dma_parms = &mxs_dma->dma_parms;
+        dma_set_max_seg_size(mxs_dma->dma_device.dev, MAX_XFER_BYTES);
+
+        mxs_dma->dma_device.device_alloc_chan_resources = mxs_dma_alloc_chan_resources;
+        mxs_dma->dma_device.device_free_chan_resources = mxs_dma_free_chan_resources;
+        mxs_dma->dma_device.device_tx_status = mxs_dma_tx_status;
+        mxs_dma->dma_device.device_prep_slave_sg = mxs_dma_prep_slave_sg;
+        mxs_dma->dma_device.device_prep_dma_cyclic = mxs_dma_prep_dma_cyclic;
+        mxs_dma->dma_device.device_control = mxs_dma_control;
+        mxs_dma->dma_device.device_issue_pending = mxs_dma_issue_pending;
+
+        ret = dma_async_device_register(&mxs_dma->dma_device);
+        if (ret) {
+                dev_err(mxs_dma->dma_device.dev, "unable to register\n");
+                goto err_init;
+        }
+
+        dev_info(mxs_dma->dma_device.dev, "initialized\n");
+
+        return 0;
+
+err_init:
+        clk_put(mxs_dma->clk);
+err_clk:
+        iounmap(mxs_dma->base);
+err_ioremap:
+        release_mem_region(iores->start, resource_size(iores));
+err_request_region:
+        kfree(mxs_dma);
+        return ret;
+}
+
+static struct platform_device_id mxs_dma_type[] = {
+        {
+                .name = "mxs-dma-apbh",
+                .driver_data = MXS_DMA_APBH,
+        }, {
+                .name = "mxs-dma-apbx",
+                .driver_data = MXS_DMA_APBX,
+        }
+};
+
+static struct platform_driver mxs_dma_driver = {
+        .driver         = {
+                .name   = "mxs-dma",
+        },
+        .id_table       = mxs_dma_type,
+};
+
+static int __init mxs_dma_module_init(void)
+{
+        return platform_driver_probe(&mxs_dma_driver, mxs_dma_probe);
+}
+subsys_initcall(mxs_dma_module_init);
diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c
index 1c38418ae61f..8d8fef1480a9 100644
--- a/drivers/dma/pch_dma.c
+++ b/drivers/dma/pch_dma.c
@@ -82,7 +82,7 @@ struct pch_dma_regs {
         u32     dma_sts1;
         u32     reserved2;
         u32     reserved3;
-        struct pch_dma_desc_regs desc[0];
+        struct pch_dma_desc_regs desc[MAX_CHAN_NR];
 };
 
 struct pch_dma_desc {
@@ -124,7 +124,7 @@ struct pch_dma {
         struct pci_pool         *pool;
         struct pch_dma_regs     regs;
         struct pch_dma_desc_regs ch_regs[MAX_CHAN_NR];
-        struct pch_dma_chan     channels[0];
+        struct pch_dma_chan     channels[MAX_CHAN_NR];
 };
 
 #define PCH_DMA_CTL0    0x00
@@ -366,7 +366,7 @@ static dma_cookie_t pd_tx_submit(struct dma_async_tx_descriptor *txd)
         struct pch_dma_chan *pd_chan = to_pd_chan(txd->chan);
         dma_cookie_t cookie;
 
-        spin_lock_bh(&pd_chan->lock);
+        spin_lock(&pd_chan->lock);
         cookie = pdc_assign_cookie(pd_chan, desc);
 
         if (list_empty(&pd_chan->active_list)) {
@@ -376,7 +376,7 @@ static dma_cookie_t pd_tx_submit(struct dma_async_tx_descriptor *txd)
                 list_add_tail(&desc->desc_node, &pd_chan->queue);
         }
 
-        spin_unlock_bh(&pd_chan->lock);
+        spin_unlock(&pd_chan->lock);
         return 0;
 }
 
@@ -386,7 +386,7 @@ static struct pch_dma_desc *pdc_alloc_desc(struct dma_chan *chan, gfp_t flags)
         struct pch_dma *pd = to_pd(chan->device);
         dma_addr_t addr;
 
-        desc = pci_pool_alloc(pd->pool, GFP_KERNEL, &addr);
+        desc = pci_pool_alloc(pd->pool, flags, &addr);
         if (desc) {
                 memset(desc, 0, sizeof(struct pch_dma_desc));
                 INIT_LIST_HEAD(&desc->tx_list);
@@ -405,7 +405,7 @@ static struct pch_dma_desc *pdc_desc_get(struct pch_dma_chan *pd_chan)
         struct pch_dma_desc *ret = NULL;
         int i;
 
-        spin_lock_bh(&pd_chan->lock);
+        spin_lock(&pd_chan->lock);
         list_for_each_entry_safe(desc, _d, &pd_chan->free_list, desc_node) {
                 i++;
                 if (async_tx_test_ack(&desc->txd)) {
@@ -415,15 +415,15 @@ static struct pch_dma_desc *pdc_desc_get(struct pch_dma_chan *pd_chan)
                 }
                 dev_dbg(chan2dev(&pd_chan->chan), "desc %p not ACKed\n", desc);
         }
-        spin_unlock_bh(&pd_chan->lock);
+        spin_unlock(&pd_chan->lock);
         dev_dbg(chan2dev(&pd_chan->chan), "scanned %d descriptors\n", i);
 
         if (!ret) {
                 ret = pdc_alloc_desc(&pd_chan->chan, GFP_NOIO);
                 if (ret) {
-                        spin_lock_bh(&pd_chan->lock);
+                        spin_lock(&pd_chan->lock);
                         pd_chan->descs_allocated++;
-                        spin_unlock_bh(&pd_chan->lock);
+                        spin_unlock(&pd_chan->lock);
                 } else {
                         dev_err(chan2dev(&pd_chan->chan),
                                 "failed to alloc desc\n");
@@ -437,10 +437,10 @@ static void pdc_desc_put(struct pch_dma_chan *pd_chan,
                          struct pch_dma_desc *desc)
 {
         if (desc) {
-                spin_lock_bh(&pd_chan->lock);
+                spin_lock(&pd_chan->lock);
                 list_splice_init(&desc->tx_list, &pd_chan->free_list);
                 list_add(&desc->desc_node, &pd_chan->free_list);
-                spin_unlock_bh(&pd_chan->lock);
+                spin_unlock(&pd_chan->lock);
         }
 }
 
@@ -530,9 +530,9 @@ static void pd_issue_pending(struct dma_chan *chan)
         struct pch_dma_chan *pd_chan = to_pd_chan(chan);
 
         if (pdc_is_idle(pd_chan)) {
-                spin_lock_bh(&pd_chan->lock);
+                spin_lock(&pd_chan->lock);
                 pdc_advance_work(pd_chan);
-                spin_unlock_bh(&pd_chan->lock);
+                spin_unlock(&pd_chan->lock);
         }
 }
 
@@ -592,7 +592,6 @@ static struct dma_async_tx_descriptor *pd_prep_slave_sg(struct dma_chan *chan,
                         goto err_desc_get;
                 }
 
-
                 if (!first) {
                         first = desc;
                 } else {
@@ -641,13 +640,13 @@ static int pd_device_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
 
         spin_unlock_bh(&pd_chan->lock);
 
-
         return 0;
 }
 
 static void pdc_tasklet(unsigned long data)
 {
         struct pch_dma_chan *pd_chan = (struct pch_dma_chan *)data;
+        unsigned long flags;
 
         if (!pdc_is_idle(pd_chan)) {
                 dev_err(chan2dev(&pd_chan->chan),
@@ -655,12 +654,12 @@ static void pdc_tasklet(unsigned long data)
                 return;
         }
 
-        spin_lock_bh(&pd_chan->lock);
+        spin_lock_irqsave(&pd_chan->lock, flags);
         if (test_and_clear_bit(0, &pd_chan->err_status))
                 pdc_handle_error(pd_chan);
         else
                 pdc_advance_work(pd_chan);
-        spin_unlock_bh(&pd_chan->lock);
+        spin_unlock_irqrestore(&pd_chan->lock, flags);
 }
 
 static irqreturn_t pd_irq(int irq, void *devid)
@@ -694,6 +693,7 @@ static irqreturn_t pd_irq(int irq, void *devid)
         return ret;
 }
 
+#ifdef  CONFIG_PM
 static void pch_dma_save_regs(struct pch_dma *pd)
 {
         struct pch_dma_chan *pd_chan;
@@ -771,6 +771,7 @@ static int pch_dma_resume(struct pci_dev *pdev)
 
         return 0;
 }
+#endif
 
 static int __devinit pch_dma_probe(struct pci_dev *pdev,
                                    const struct pci_device_id *id)
diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 6e1d46a65d0e..af955de035f4 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -68,6 +68,7 @@ enum d40_command {
  * @base: Pointer to memory area when the pre_alloc_lli's are not large
  * enough, IE bigger than the most common case, 1 dst and 1 src. NULL if
  * pre_alloc_lli is used.
+ * @dma_addr: DMA address, if mapped
  * @size: The size in bytes of the memory at base or the size of pre_alloc_lli.
  * @pre_alloc_lli: Pre allocated area for the most common case of transfers,
  * one buffer to one buffer.
@@ -75,6 +76,7 @@ enum d40_command {
 struct d40_lli_pool {
         void    *base;
         int      size;
+        dma_addr_t      dma_addr;
         /* Space for dst and src, plus an extra for padding */
         u8       pre_alloc_lli[3 * sizeof(struct d40_phy_lli)];
 };
@@ -94,7 +96,6 @@ struct d40_lli_pool {
  * during a transfer.
  * @node: List entry.
  * @is_in_client_list: true if the client owns this descriptor.
- * @is_hw_linked: true if this job will automatically be continued for
  * the previous one.
  *
  * This descriptor is used for both logical and physical transfers.
@@ -114,7 +115,7 @@ struct d40_desc {
         struct list_head                 node;
 
         bool                             is_in_client_list;
-        bool                             is_hw_linked;
+        bool                             cyclic;
 };
 
 /**
@@ -130,6 +131,7 @@ struct d40_desc {
  */
 struct d40_lcla_pool {
         void            *base;
+        dma_addr_t      dma_addr;
         void            *base_unaligned;
         int              pages;
         spinlock_t       lock;
@@ -303,9 +305,37 @@ struct d40_reg_val {
         unsigned int val;
 };
 
-static int d40_pool_lli_alloc(struct d40_desc *d40d,
-                              int lli_len, bool is_log)
+static struct device *chan2dev(struct d40_chan *d40c)
 {
+        return &d40c->chan.dev->device;
+}
+
+static bool chan_is_physical(struct d40_chan *chan)
+{
+        return chan->log_num == D40_PHY_CHAN;
+}
+
+static bool chan_is_logical(struct d40_chan *chan)
+{
+        return !chan_is_physical(chan);
+}
+
+static void __iomem *chan_base(struct d40_chan *chan)
+{
+        return chan->base->virtbase + D40_DREG_PCBASE +
+               chan->phy_chan->num * D40_DREG_PCDELTA;
+}
+
+#define d40_err(dev, format, arg...)            \
+        dev_err(dev, "[%s] " format, __func__, ## arg)
+
+#define chan_err(d40c, format, arg...)          \
+        d40_err(chan2dev(d40c), format, ## arg)
+
+static int d40_pool_lli_alloc(struct d40_chan *d40c, struct d40_desc *d40d,
+                              int lli_len)
+{
+        bool is_log = chan_is_logical(d40c);
         u32 align;
         void *base;
 
@@ -319,7 +349,7 @@ static int d40_pool_lli_alloc(struct d40_desc *d40d,
                 d40d->lli_pool.size = sizeof(d40d->lli_pool.pre_alloc_lli);
                 d40d->lli_pool.base = NULL;
         } else {
-                d40d->lli_pool.size = ALIGN(lli_len * 2 * align, align);
+                d40d->lli_pool.size = lli_len * 2 * align;
 
                 base = kmalloc(d40d->lli_pool.size + align, GFP_NOWAIT);
                 d40d->lli_pool.base = base;
@@ -329,22 +359,37 @@ static int d40_pool_lli_alloc(struct d40_desc *d40d,
         }
 
         if (is_log) {
-                d40d->lli_log.src = PTR_ALIGN((struct d40_log_lli *) base,
-                                              align);
-                d40d->lli_log.dst = PTR_ALIGN(d40d->lli_log.src + lli_len,
-                                              align);
+                d40d->lli_log.src = PTR_ALIGN(base, align);
+                d40d->lli_log.dst = d40d->lli_log.src + lli_len;
+
+                d40d->lli_pool.dma_addr = 0;
         } else {
-                d40d->lli_phy.src = PTR_ALIGN((struct d40_phy_lli *)base,
-                                              align);
-                d40d->lli_phy.dst = PTR_ALIGN(d40d->lli_phy.src + lli_len,
-                                              align);
+                d40d->lli_phy.src = PTR_ALIGN(base, align);
+                d40d->lli_phy.dst = d40d->lli_phy.src + lli_len;
+
+                d40d->lli_pool.dma_addr = dma_map_single(d40c->base->dev,
+                                                         d40d->lli_phy.src,
+                                                         d40d->lli_pool.size,
+                                                         DMA_TO_DEVICE);
+
+                if (dma_mapping_error(d40c->base->dev,
+                                      d40d->lli_pool.dma_addr)) {
+                        kfree(d40d->lli_pool.base);
+                        d40d->lli_pool.base = NULL;
+                        d40d->lli_pool.dma_addr = 0;
+                        return -ENOMEM;
+                }
         }
 
         return 0;
 }
 
-static void d40_pool_lli_free(struct d40_desc *d40d)
+static void d40_pool_lli_free(struct d40_chan *d40c, struct d40_desc *d40d)
 {
+        if (d40d->lli_pool.dma_addr)
+                dma_unmap_single(d40c->base->dev, d40d->lli_pool.dma_addr,
+                                 d40d->lli_pool.size, DMA_TO_DEVICE);
+
         kfree(d40d->lli_pool.base);
         d40d->lli_pool.base = NULL;
         d40d->lli_pool.size = 0;
@@ -391,7 +436,7 @@ static int d40_lcla_free_all(struct d40_chan *d40c,
         int i;
         int ret = -EINVAL;
 
-        if (d40c->log_num == D40_PHY_CHAN)
+        if (chan_is_physical(d40c))
                 return 0;
 
         spin_lock_irqsave(&d40c->base->lcla_pool.lock, flags);
@@ -430,7 +475,7 @@ static struct d40_desc *d40_desc_get(struct d40_chan *d40c)
 
                 list_for_each_entry_safe(d, _d, &d40c->client, node)
                         if (async_tx_test_ack(&d->txd)) {
-                                d40_pool_lli_free(d);
+                                d40_pool_lli_free(d40c, d);
                                 d40_desc_remove(d);
                                 desc = d;
                                 memset(desc, 0, sizeof(*desc));
@@ -450,6 +495,7 @@ static struct d40_desc *d40_desc_get(struct d40_chan *d40c)
 static void d40_desc_free(struct d40_chan *d40c, struct d40_desc *d40d)
 {
 
+        d40_pool_lli_free(d40c, d40d);
         d40_lcla_free_all(d40c, d40d);
         kmem_cache_free(d40c->base->desc_slab, d40d);
 }
@@ -459,57 +505,128 @@ static void d40_desc_submit(struct d40_chan *d40c, struct d40_desc *desc)
         list_add_tail(&desc->node, &d40c->active);
 }
 
-static void d40_desc_load(struct d40_chan *d40c, struct d40_desc *d40d)
+static void d40_phy_lli_load(struct d40_chan *chan, struct d40_desc *desc)
 {
-        int curr_lcla = -EINVAL, next_lcla;
+        struct d40_phy_lli *lli_dst = desc->lli_phy.dst;
+        struct d40_phy_lli *lli_src = desc->lli_phy.src;
+        void __iomem *base = chan_base(chan);
+
+        writel(lli_src->reg_cfg, base + D40_CHAN_REG_SSCFG);
+        writel(lli_src->reg_elt, base + D40_CHAN_REG_SSELT);
+        writel(lli_src->reg_ptr, base + D40_CHAN_REG_SSPTR);
+        writel(lli_src->reg_lnk, base + D40_CHAN_REG_SSLNK);
+
+        writel(lli_dst->reg_cfg, base + D40_CHAN_REG_SDCFG);
+        writel(lli_dst->reg_elt, base + D40_CHAN_REG_SDELT);
+        writel(lli_dst->reg_ptr, base + D40_CHAN_REG_SDPTR);
+        writel(lli_dst->reg_lnk, base + D40_CHAN_REG_SDLNK);
+}
 
-        if (d40c->log_num == D40_PHY_CHAN) {
-                d40_phy_lli_write(d40c->base->virtbase,
-                                  d40c->phy_chan->num,
-                                  d40d->lli_phy.dst,
-                                  d40d->lli_phy.src);
-                d40d->lli_current = d40d->lli_len;
-        } else {
+static void d40_log_lli_to_lcxa(struct d40_chan *chan, struct d40_desc *desc)
+{
+        struct d40_lcla_pool *pool = &chan->base->lcla_pool;
+        struct d40_log_lli_bidir *lli = &desc->lli_log;
+        int lli_current = desc->lli_current;
+        int lli_len = desc->lli_len;
+        bool cyclic = desc->cyclic;
+        int curr_lcla = -EINVAL;
+        int first_lcla = 0;
+        bool linkback;
 
-                if ((d40d->lli_len - d40d->lli_current) > 1)
-                        curr_lcla = d40_lcla_alloc_one(d40c, d40d);
+        /*
+         * We may have partially running cyclic transfers, in case we did't get
+         * enough LCLA entries.
+         */
+        linkback = cyclic && lli_current == 0;
 
-                d40_log_lli_lcpa_write(d40c->lcpa,
-                                       &d40d->lli_log.dst[d40d->lli_current],
-                                       &d40d->lli_log.src[d40d->lli_current],
-                                       curr_lcla);
+        /*
+         * For linkback, we need one LCLA even with only one link, because we
+         * can't link back to the one in LCPA space
+         */
+        if (linkback || (lli_len - lli_current > 1)) {
+                curr_lcla = d40_lcla_alloc_one(chan, desc);
+                first_lcla = curr_lcla;
+        }
 
-                d40d->lli_current++;
-                for (; d40d->lli_current < d40d->lli_len; d40d->lli_current++) {
-                        struct d40_log_lli *lcla;
+        /*
+         * For linkback, we normally load the LCPA in the loop since we need to
+         * link it to the second LCLA and not the first.  However, if we
+         * couldn't even get a first LCLA, then we have to run in LCPA and
+         * reload manually.
+         */
+        if (!linkback || curr_lcla == -EINVAL) {
+                unsigned int flags = 0;
 
-                        if (d40d->lli_current + 1 < d40d->lli_len)
-                                next_lcla = d40_lcla_alloc_one(d40c, d40d);
-                        else
-                                next_lcla = -EINVAL;
+                if (curr_lcla == -EINVAL)
+                        flags |= LLI_TERM_INT;
 
-                        lcla = d40c->base->lcla_pool.base +
-                                d40c->phy_chan->num * 1024 +
-                                8 * curr_lcla * 2;
+                d40_log_lli_lcpa_write(chan->lcpa,
+                                       &lli->dst[lli_current],
+                                       &lli->src[lli_current],
+                                       curr_lcla,
+                                       flags);
+                lli_current++;
+        }
 
-                        d40_log_lli_lcla_write(lcla,
-                                               &d40d->lli_log.dst[d40d->lli_current],
-                                               &d40d->lli_log.src[d40d->lli_current],
-                                               next_lcla);
+        if (curr_lcla < 0)
+                goto out;
 
-                        (void) dma_map_single(d40c->base->dev, lcla,
-                                              2 * sizeof(struct d40_log_lli),
-                                              DMA_TO_DEVICE);
+        for (; lli_current < lli_len; lli_current++) {
+                unsigned int lcla_offset = chan->phy_chan->num * 1024 +
+                                           8 * curr_lcla * 2;
+                struct d40_log_lli *lcla = pool->base + lcla_offset;
+                unsigned int flags = 0;
+                int next_lcla;
 
-                        curr_lcla = next_lcla;
+                if (lli_current + 1 < lli_len)
+                        next_lcla = d40_lcla_alloc_one(chan, desc);
+                else
+                        next_lcla = linkback ? first_lcla : -EINVAL;
 
-                        if (curr_lcla == -EINVAL) {
-                                d40d->lli_current++;
-                                break;
-                        }
+                if (cyclic || next_lcla == -EINVAL)
+                        flags |= LLI_TERM_INT;
+
+                if (linkback && curr_lcla == first_lcla) {
+                        /* First link goes in both LCPA and LCLA */
+                        d40_log_lli_lcpa_write(chan->lcpa,
+                                               &lli->dst[lli_current],
+                                               &lli->src[lli_current],
+                                               next_lcla, flags);
+                }
+
+                /*
+                 * One unused LCLA in the cyclic case if the very first
+                 * next_lcla fails...
+                 */
+                d40_log_lli_lcla_write(lcla,
+                                       &lli->dst[lli_current],
+                                       &lli->src[lli_current],
+                                       next_lcla, flags);
+
+                dma_sync_single_range_for_device(chan->base->dev,
+                                        pool->dma_addr, lcla_offset,
+                                        2 * sizeof(struct d40_log_lli),
+                                        DMA_TO_DEVICE);
 
+                curr_lcla = next_lcla;
+
+                if (curr_lcla == -EINVAL || curr_lcla == first_lcla) {
+                        lli_current++;
+                        break;
                 }
         }
+
+out:
+        desc->lli_current = lli_current;
+}
+
+static void d40_desc_load(struct d40_chan *d40c, struct d40_desc *d40d)
+{
+        if (chan_is_physical(d40c)) {
+                d40_phy_lli_load(d40c, d40d);
+                d40d->lli_current = d40d->lli_len;
+        } else
+                d40_log_lli_to_lcxa(d40c, d40d);
 }
 
 static struct d40_desc *d40_first_active_get(struct d40_chan *d40c)
@@ -543,18 +660,6 @@ static struct d40_desc *d40_first_queued(struct d40_chan *d40c)
         return d;
 }
 
-static struct d40_desc *d40_last_queued(struct d40_chan *d40c)
-{
-        struct d40_desc *d;
-
-        if (list_empty(&d40c->queue))
-                return NULL;
-        list_for_each_entry(d, &d40c->queue, node)
-                if (list_is_last(&d->node, &d40c->queue))
-                        break;
-        return d;
-}
-
 static int d40_psize_2_burst_size(bool is_log, int psize)
 {
         if (is_log) {
@@ -666,9 +771,9 @@ static int d40_channel_execute_command(struct d40_chan *d40c,
                 }
 
                 if (i == D40_SUSPEND_MAX_IT) {
-                        dev_err(&d40c->chan.dev->device,
-                                "[%s]: unable to suspend the chl %d (log: %d) status %x\n",
-                                __func__, d40c->phy_chan->num, d40c->log_num,
+                        chan_err(d40c,
+                                "unable to suspend the chl %d (log: %d) status %x\n",
+                                d40c->phy_chan->num, d40c->log_num,
                                 status);
                         dump_stack();
                         ret = -EBUSY;
@@ -701,17 +806,45 @@ static void d40_term_all(struct d40_chan *d40c)
         d40c->busy = false;
 }
 
+static void __d40_config_set_event(struct d40_chan *d40c, bool enable,
+                                   u32 event, int reg)
+{
+        void __iomem *addr = chan_base(d40c) + reg;
+        int tries;
+
+        if (!enable) {
+                writel((D40_DEACTIVATE_EVENTLINE << D40_EVENTLINE_POS(event))
+                       | ~D40_EVENTLINE_MASK(event), addr);
+                return;
+        }
+
+        /*
+         * The hardware sometimes doesn't register the enable when src and dst
+         * event lines are active on the same logical channel.  Retry to ensure
+         * it does.  Usually only one retry is sufficient.
+         */
+        tries = 100;
+        while (--tries) {
+                writel((D40_ACTIVATE_EVENTLINE << D40_EVENTLINE_POS(event))
+                       | ~D40_EVENTLINE_MASK(event), addr);
+
+                if (readl(addr) & D40_EVENTLINE_MASK(event))
+                        break;
+        }
+
+        if (tries != 99)
+                dev_dbg(chan2dev(d40c),
+                        "[%s] workaround enable S%cLNK (%d tries)\n",
+                        __func__, reg == D40_CHAN_REG_SSLNK ? 'S' : 'D',
+                        100 - tries);
+
+        WARN_ON(!tries);
+}
+
 static void d40_config_set_event(struct d40_chan *d40c, bool do_enable)
 {
-        u32 val;
         unsigned long flags;
 
-        /* Notice, that disable requires the physical channel to be stopped */
-        if (do_enable)
-                val = D40_ACTIVATE_EVENTLINE;
-        else
-                val = D40_DEACTIVATE_EVENTLINE;
-
         spin_lock_irqsave(&d40c->phy_chan->lock, flags);
 
         /* Enable event line connected to device (or memcpy) */
@@ -719,20 +852,15 @@ static void d40_config_set_event(struct d40_chan *d40c, bool do_enable)
             (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_PERIPH)) {
                 u32 event = D40_TYPE_TO_EVENT(d40c->dma_cfg.src_dev_type);
 
-                writel((val << D40_EVENTLINE_POS(event)) |
-                       ~D40_EVENTLINE_MASK(event),
-                       d40c->base->virtbase + D40_DREG_PCBASE +
-                       d40c->phy_chan->num * D40_DREG_PCDELTA +
-                       D40_CHAN_REG_SSLNK);
+                __d40_config_set_event(d40c, do_enable, event,
+                                       D40_CHAN_REG_SSLNK);
         }
+
         if (d40c->dma_cfg.dir !=  STEDMA40_PERIPH_TO_MEM) {
                 u32 event = D40_TYPE_TO_EVENT(d40c->dma_cfg.dst_dev_type);
 
-                writel((val << D40_EVENTLINE_POS(event)) |
-                       ~D40_EVENTLINE_MASK(event),
-                       d40c->base->virtbase + D40_DREG_PCBASE +
-                       d40c->phy_chan->num * D40_DREG_PCDELTA +
-                       D40_CHAN_REG_SDLNK);
+                __d40_config_set_event(d40c, do_enable, event,
+                                       D40_CHAN_REG_SDLNK);
         }
 
         spin_unlock_irqrestore(&d40c->phy_chan->lock, flags);
@@ -740,15 +868,12 @@ static void d40_config_set_event(struct d40_chan *d40c, bool do_enable)
 
 static u32 d40_chan_has_events(struct d40_chan *d40c)
 {
+        void __iomem *chanbase = chan_base(d40c);
         u32 val;
 
-        val = readl(d40c->base->virtbase + D40_DREG_PCBASE +
-                    d40c->phy_chan->num * D40_DREG_PCDELTA +
-                    D40_CHAN_REG_SSLNK);
+        val = readl(chanbase + D40_CHAN_REG_SSLNK);
+        val |= readl(chanbase + D40_CHAN_REG_SDLNK);
 
-        val |= readl(d40c->base->virtbase + D40_DREG_PCBASE +
-                     d40c->phy_chan->num * D40_DREG_PCDELTA +
-                     D40_CHAN_REG_SDLNK);
         return val;
 }
 
@@ -771,7 +896,7 @@ static u32 d40_get_prmo(struct d40_chan *d40c)
                         = D40_DREG_PRMO_LCHAN_SRC_LOG_DST_LOG,
         };
 
-        if (d40c->log_num == D40_PHY_CHAN)
+        if (chan_is_physical(d40c))
                 return phy_map[d40c->dma_cfg.mode_opt];
         else
                 return log_map[d40c->dma_cfg.mode_opt];
@@ -785,7 +910,7 @@ static void d40_config_write(struct d40_chan *d40c)
         /* Odd addresses are even addresses + 4 */
         addr_base = (d40c->phy_chan->num % 2) * 4;
         /* Setup channel mode to logical or physical */
-        var = ((u32)(d40c->log_num != D40_PHY_CHAN) + 1) <<
+        var = ((u32)(chan_is_logical(d40c)) + 1) <<
                 D40_CHAN_POS(d40c->phy_chan->num);
         writel(var, d40c->base->virtbase + D40_DREG_PRMSE + addr_base);
 
@@ -794,30 +919,18 @@ static void d40_config_write(struct d40_chan *d40c)
 
         writel(var, d40c->base->virtbase + D40_DREG_PRMOE + addr_base);
 
-        if (d40c->log_num != D40_PHY_CHAN) {
+        if (chan_is_logical(d40c)) {
+                int lidx = (d40c->phy_chan->num << D40_SREG_ELEM_LOG_LIDX_POS)
+                           & D40_SREG_ELEM_LOG_LIDX_MASK;
+                void __iomem *chanbase = chan_base(d40c);
+
                 /* Set default config for CFG reg */
-                writel(d40c->src_def_cfg,
-                       d40c->base->virtbase + D40_DREG_PCBASE +
-                       d40c->phy_chan->num * D40_DREG_PCDELTA +
-                       D40_CHAN_REG_SSCFG);
-                writel(d40c->dst_def_cfg,
-                       d40c->base->virtbase + D40_DREG_PCBASE +
-                       d40c->phy_chan->num * D40_DREG_PCDELTA +
-                       D40_CHAN_REG_SDCFG);
+                writel(d40c->src_def_cfg, chanbase + D40_CHAN_REG_SSCFG);
+                writel(d40c->dst_def_cfg, chanbase + D40_CHAN_REG_SDCFG);
 
                 /* Set LIDX for lcla */
-                writel((d40c->phy_chan->num << D40_SREG_ELEM_LOG_LIDX_POS) &
-                       D40_SREG_ELEM_LOG_LIDX_MASK,
-                       d40c->base->virtbase + D40_DREG_PCBASE +
-                       d40c->phy_chan->num * D40_DREG_PCDELTA +
-                       D40_CHAN_REG_SDELT);
-
-                writel((d40c->phy_chan->num << D40_SREG_ELEM_LOG_LIDX_POS) &
-                       D40_SREG_ELEM_LOG_LIDX_MASK,
-                       d40c->base->virtbase + D40_DREG_PCBASE +
-                       d40c->phy_chan->num * D40_DREG_PCDELTA +
-                       D40_CHAN_REG_SSELT);
-
+                writel(lidx, chanbase + D40_CHAN_REG_SSELT);
+                writel(lidx, chanbase + D40_CHAN_REG_SDELT);
         }
 }
 
@@ -825,15 +938,15 @@ static u32 d40_residue(struct d40_chan *d40c)
 {
         u32 num_elt;
 
-        if (d40c->log_num != D40_PHY_CHAN)
+        if (chan_is_logical(d40c))
                 num_elt = (readl(&d40c->lcpa->lcsp2) & D40_MEM_LCSP2_ECNT_MASK)
                         >> D40_MEM_LCSP2_ECNT_POS;
-        else
-                num_elt = (readl(d40c->base->virtbase + D40_DREG_PCBASE +
-                                 d40c->phy_chan->num * D40_DREG_PCDELTA +
-                                 D40_CHAN_REG_SDELT) &
-                           D40_SREG_ELEM_PHY_ECNT_MASK) >>
-                        D40_SREG_ELEM_PHY_ECNT_POS;
+        else {
+                u32 val = readl(chan_base(d40c) + D40_CHAN_REG_SDELT);
+                num_elt = (val & D40_SREG_ELEM_PHY_ECNT_MASK)
+                          >> D40_SREG_ELEM_PHY_ECNT_POS;
+        }
+
         return num_elt * (1 << d40c->dma_cfg.dst_info.data_width);
 }
 
@@ -841,20 +954,17 @@ static bool d40_tx_is_linked(struct d40_chan *d40c)
 {
         bool is_link;
 
-        if (d40c->log_num != D40_PHY_CHAN)
+        if (chan_is_logical(d40c))
                 is_link = readl(&d40c->lcpa->lcsp3) &  D40_MEM_LCSP3_DLOS_MASK;
         else
-                is_link = readl(d40c->base->virtbase + D40_DREG_PCBASE +
-                                d40c->phy_chan->num * D40_DREG_PCDELTA +
-                                D40_CHAN_REG_SDLNK) &
-                        D40_SREG_LNK_PHYS_LNK_MASK;
+                is_link = readl(chan_base(d40c) + D40_CHAN_REG_SDLNK)
+                          & D40_SREG_LNK_PHYS_LNK_MASK;
+
         return is_link;
 }
 
-static int d40_pause(struct dma_chan *chan)
+static int d40_pause(struct d40_chan *d40c)
 {
-        struct d40_chan *d40c =
-                container_of(chan, struct d40_chan, chan);
         int res = 0;
         unsigned long flags;
 
@@ -865,7 +975,7 @@ static int d40_pause(struct dma_chan *chan)
 
         res = d40_channel_execute_command(d40c, D40_DMA_SUSPEND_REQ);
         if (res == 0) {
-                if (d40c->log_num != D40_PHY_CHAN) {
+                if (chan_is_logical(d40c)) {
                         d40_config_set_event(d40c, false);
                         /* Resume the other logical channels if any */
                         if (d40_chan_has_events(d40c))
@@ -878,10 +988,8 @@ static int d40_pause(struct dma_chan *chan)
         return res;
 }
 
-static int d40_resume(struct dma_chan *chan)
+static int d40_resume(struct d40_chan *d40c)
 {
-        struct d40_chan *d40c =
-                container_of(chan, struct d40_chan, chan);
         int res = 0;
         unsigned long flags;
 
@@ -891,7 +999,7 @@ static int d40_resume(struct dma_chan *chan)
         spin_lock_irqsave(&d40c->lock, flags);
 
         if (d40c->base->rev == 0)
-                if (d40c->log_num != D40_PHY_CHAN) {
+                if (chan_is_logical(d40c)) {
                         res = d40_channel_execute_command(d40c,
                                                           D40_DMA_SUSPEND_REQ);
                         goto no_suspend;
@@ -900,7 +1008,7 @@ static int d40_resume(struct dma_chan *chan)
         /* If bytes left to transfer or linked tx resume job */
         if (d40_residue(d40c) || d40_tx_is_linked(d40c)) {
 
-                if (d40c->log_num != D40_PHY_CHAN)
+                if (chan_is_logical(d40c))
                         d40_config_set_event(d40c, true);
 
                 res = d40_channel_execute_command(d40c, D40_DMA_RUN);
@@ -911,75 +1019,20 @@ no_suspend:
         return res;
 }
 
-static void d40_tx_submit_log(struct d40_chan *d40c, struct d40_desc *d40d)
+static int d40_terminate_all(struct d40_chan *chan)
 {
-        /* TODO: Write */
-}
-
-static void d40_tx_submit_phy(struct d40_chan *d40c, struct d40_desc *d40d)
-{
-        struct d40_desc *d40d_prev = NULL;
-        int i;
-        u32 val;
-
-        if (!list_empty(&d40c->queue))
-                d40d_prev = d40_last_queued(d40c);
-        else if (!list_empty(&d40c->active))
-                d40d_prev = d40_first_active_get(d40c);
-
-        if (!d40d_prev)
-                return;
-
-        /* Here we try to join this job with previous jobs */
-        val = readl(d40c->base->virtbase + D40_DREG_PCBASE +
-                    d40c->phy_chan->num * D40_DREG_PCDELTA +
-                    D40_CHAN_REG_SSLNK);
-
-        /* Figure out which link we're currently transmitting */
-        for (i = 0; i < d40d_prev->lli_len; i++)
-                if (val == d40d_prev->lli_phy.src[i].reg_lnk)
-                        break;
-
-        val = readl(d40c->base->virtbase + D40_DREG_PCBASE +
-                    d40c->phy_chan->num * D40_DREG_PCDELTA +
-                    D40_CHAN_REG_SSELT) >> D40_SREG_ELEM_LOG_ECNT_POS;
-
-        if (i == (d40d_prev->lli_len - 1) && val > 0) {
-                /* Change the current one */
-                writel(virt_to_phys(d40d->lli_phy.src),
-                       d40c->base->virtbase + D40_DREG_PCBASE +
-                       d40c->phy_chan->num * D40_DREG_PCDELTA +
-                       D40_CHAN_REG_SSLNK);
-                writel(virt_to_phys(d40d->lli_phy.dst),
-                       d40c->base->virtbase + D40_DREG_PCBASE +
-                       d40c->phy_chan->num * D40_DREG_PCDELTA +
-                       D40_CHAN_REG_SDLNK);
-
-                d40d->is_hw_linked = true;
-
-        } else if (i < d40d_prev->lli_len) {
-                (void) dma_unmap_single(d40c->base->dev,
-                                        virt_to_phys(d40d_prev->lli_phy.src),
-                                        d40d_prev->lli_pool.size,
-                                        DMA_TO_DEVICE);
+        unsigned long flags;
+        int ret = 0;
 
-                /* Keep the settings */
-                val = d40d_prev->lli_phy.src[d40d_prev->lli_len - 1].reg_lnk &
-                        ~D40_SREG_LNK_PHYS_LNK_MASK;
-                d40d_prev->lli_phy.src[d40d_prev->lli_len - 1].reg_lnk =
-                        val | virt_to_phys(d40d->lli_phy.src);
+        ret = d40_pause(chan);
+        if (!ret && chan_is_physical(chan))
+                ret = d40_channel_execute_command(chan, D40_DMA_STOP);
 
-                val = d40d_prev->lli_phy.dst[d40d_prev->lli_len - 1].reg_lnk &
-                        ~D40_SREG_LNK_PHYS_LNK_MASK;
-                d40d_prev->lli_phy.dst[d40d_prev->lli_len - 1].reg_lnk =
-                        val | virt_to_phys(d40d->lli_phy.dst);
+        spin_lock_irqsave(&chan->lock, flags);
+        d40_term_all(chan);
+        spin_unlock_irqrestore(&chan->lock, flags);
 
-                (void) dma_map_single(d40c->base->dev,
-                                      d40d_prev->lli_phy.src,
-                                      d40d_prev->lli_pool.size,
-                                      DMA_TO_DEVICE);
-                d40d->is_hw_linked = true;
-        }
+        return ret;
 }
 
 static dma_cookie_t d40_tx_submit(struct dma_async_tx_descriptor *tx)
@@ -990,8 +1043,6 @@ static dma_cookie_t d40_tx_submit(struct dma_async_tx_descriptor *tx)
         struct d40_desc *d40d = container_of(tx, struct d40_desc, txd);
         unsigned long flags;
 
-        (void) d40_pause(&d40c->chan);
-
         spin_lock_irqsave(&d40c->lock, flags);
 
         d40c->chan.cookie++;
@@ -1001,17 +1052,10 @@ static dma_cookie_t d40_tx_submit(struct dma_async_tx_descriptor *tx)
 
         d40d->txd.cookie = d40c->chan.cookie;
 
-        if (d40c->log_num == D40_PHY_CHAN)
-                d40_tx_submit_phy(d40c, d40d);
-        else
-                d40_tx_submit_log(d40c, d40d);
-
         d40_desc_queue(d40c, d40d);
 
         spin_unlock_irqrestore(&d40c->lock, flags);
 
-        (void) d40_resume(&d40c->chan);
-
         return tx->cookie;
 }
 
@@ -1020,7 +1064,7 @@ static int d40_start(struct d40_chan *d40c)
         if (d40c->base->rev == 0) {
                 int err;
 
-                if (d40c->log_num != D40_PHY_CHAN) {
+                if (chan_is_logical(d40c)) {
                         err = d40_channel_execute_command(d40c,
                                                           D40_DMA_SUSPEND_REQ);
                         if (err)
@@ -1028,7 +1072,7 @@ static int d40_start(struct d40_chan *d40c)
                 }
         }
 
-        if (d40c->log_num != D40_PHY_CHAN)
+        if (chan_is_logical(d40c))
                 d40_config_set_event(d40c, true);
 
         return d40_channel_execute_command(d40c, D40_DMA_RUN);
@@ -1051,21 +1095,14 @@ static struct d40_desc *d40_queue_start(struct d40_chan *d40c)
                 /* Add to active queue */
                 d40_desc_submit(d40c, d40d);
 
-                /*
-                 * If this job is already linked in hw,
-                 * do not submit it.
-                 */
-
-                if (!d40d->is_hw_linked) {
-                        /* Initiate DMA job */
-                        d40_desc_load(d40c, d40d);
+                /* Initiate DMA job */
+                d40_desc_load(d40c, d40d);
 
-                        /* Start dma job */
-                        err = d40_start(d40c);
+                /* Start dma job */
+                err = d40_start(d40c);
 
-                        if (err)
-                                return NULL;
-                }
+                if (err)
+                        return NULL;
         }
 
         return d40d;
@@ -1082,17 +1119,36 @@ static void dma_tc_handle(struct d40_chan *d40c)
         if (d40d == NULL)
                 return;
 
-        d40_lcla_free_all(d40c, d40d);
+        if (d40d->cyclic) {
+                /*
+                 * If this was a paritially loaded list, we need to reloaded
+                 * it, and only when the list is completed.  We need to check
+                 * for done because the interrupt will hit for every link, and
+                 * not just the last one.
+                 */
+                if (d40d->lli_current < d40d->lli_len
+                    && !d40_tx_is_linked(d40c)
+                    && !d40_residue(d40c)) {
+                        d40_lcla_free_all(d40c, d40d);
+                        d40_desc_load(d40c, d40d);
+                        (void) d40_start(d40c);
 
-        if (d40d->lli_current < d40d->lli_len) {
-                d40_desc_load(d40c, d40d);
-                /* Start dma job */
-                (void) d40_start(d40c);
-                return;
-        }
+                        if (d40d->lli_current == d40d->lli_len)
+                                d40d->lli_current = 0;
+                }
+        } else {
+                d40_lcla_free_all(d40c, d40d);
 
-        if (d40_queue_start(d40c) == NULL)
-                d40c->busy = false;
+                if (d40d->lli_current < d40d->lli_len) {
+                        d40_desc_load(d40c, d40d);
+                        /* Start dma job */
+                        (void) d40_start(d40c);
+                        return;
+                }
+
+                if (d40_queue_start(d40c) == NULL)
+                        d40c->busy = false;
+        }
 
         d40c->pending_tx++;
         tasklet_schedule(&d40c->tasklet);
@@ -1111,11 +1167,11 @@ static void dma_tasklet(unsigned long data)
 
         /* Get first active entry from list */
         d40d = d40_first_active_get(d40c);
-
         if (d40d == NULL)
                 goto err;
 
-        d40c->completed = d40d->txd.cookie;
+        if (!d40d->cyclic)
+                d40c->completed = d40d->txd.cookie;
 
         /*
          * If terminating a channel pending_tx is set to zero.
@@ -1130,16 +1186,18 @@ static void dma_tasklet(unsigned long data)
         callback = d40d->txd.callback;
         callback_param = d40d->txd.callback_param;
 
-        if (async_tx_test_ack(&d40d->txd)) {
-                d40_pool_lli_free(d40d);
-                d40_desc_remove(d40d);
-                d40_desc_free(d40c, d40d);
-        } else {
-                if (!d40d->is_in_client_list) {
+        if (!d40d->cyclic) {
+                if (async_tx_test_ack(&d40d->txd)) {
+                        d40_pool_lli_free(d40c, d40d);
                         d40_desc_remove(d40d);
-                        d40_lcla_free_all(d40c, d40d);
-                        list_add_tail(&d40d->node, &d40c->client);
-                        d40d->is_in_client_list = true;
+                        d40_desc_free(d40c, d40d);
+                } else {
+                        if (!d40d->is_in_client_list) {
+                                d40_desc_remove(d40d);
+                                d40_lcla_free_all(d40c, d40d);
+                                list_add_tail(&d40d->node, &d40c->client);
+                                d40d->is_in_client_list = true;
+                        }
                 }
         }
 
@@ -1216,9 +1274,8 @@ static irqreturn_t d40_handle_interrupt(int irq, void *data)
                 if (!il[row].is_error)
                         dma_tc_handle(d40c);
                 else
-                        dev_err(base->dev,
-                                "[%s] IRQ chan: %ld offset %d idx %d\n",
-                                __func__, chan, il[row].offset, idx);
+                        d40_err(base->dev, "IRQ chan: %ld offset %d idx %d\n",
+                                chan, il[row].offset, idx);
 
                 spin_unlock(&d40c->lock);
         }
@@ -1237,8 +1294,7 @@ static int d40_validate_conf(struct d40_chan *d40c,
         bool is_log = conf->mode == STEDMA40_MODE_LOGICAL;
 
         if (!conf->dir) {
-                dev_err(&d40c->chan.dev->device, "[%s] Invalid direction.\n",
-                        __func__);
+                chan_err(d40c, "Invalid direction.\n");
                 res = -EINVAL;
         }
 
@@ -1246,46 +1302,40 @@ static int d40_validate_conf(struct d40_chan *d40c,
             d40c->base->plat_data->dev_tx[conf->dst_dev_type] == 0 &&
             d40c->runtime_addr == 0) {
 
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Invalid TX channel address (%d)\n",
-                        __func__, conf->dst_dev_type);
+                chan_err(d40c, "Invalid TX channel address (%d)\n",
+                         conf->dst_dev_type);
                 res = -EINVAL;
         }
 
         if (conf->src_dev_type != STEDMA40_DEV_SRC_MEMORY &&
             d40c->base->plat_data->dev_rx[conf->src_dev_type] == 0 &&
             d40c->runtime_addr == 0) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Invalid RX channel address (%d)\n",
-                        __func__, conf->src_dev_type);
+                chan_err(d40c, "Invalid RX channel address (%d)\n",
+                        conf->src_dev_type);
                 res = -EINVAL;
         }
 
         if (conf->dir == STEDMA40_MEM_TO_PERIPH &&
             dst_event_group == STEDMA40_DEV_DST_MEMORY) {
-                dev_err(&d40c->chan.dev->device, "[%s] Invalid dst\n",
-                        __func__);
+                chan_err(d40c, "Invalid dst\n");
                 res = -EINVAL;
         }
 
         if (conf->dir == STEDMA40_PERIPH_TO_MEM &&
             src_event_group == STEDMA40_DEV_SRC_MEMORY) {
-                dev_err(&d40c->chan.dev->device, "[%s] Invalid src\n",
-                        __func__);
+                chan_err(d40c, "Invalid src\n");
                 res = -EINVAL;
         }
 
         if (src_event_group == STEDMA40_DEV_SRC_MEMORY &&
             dst_event_group == STEDMA40_DEV_DST_MEMORY && is_log) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] No event line\n", __func__);
+                chan_err(d40c, "No event line\n");
                 res = -EINVAL;
         }
 
         if (conf->dir == STEDMA40_PERIPH_TO_PERIPH &&
             (src_event_group != dst_event_group)) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Invalid event group\n", __func__);
+                chan_err(d40c, "Invalid event group\n");
                 res = -EINVAL;
         }
 
@@ -1294,9 +1344,7 @@ static int d40_validate_conf(struct d40_chan *d40c,
                  * DMAC HW supports it. Will be added to this driver,
                  * in case any dma client requires it.
                  */
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] periph to periph not supported\n",
-                        __func__);
+                chan_err(d40c, "periph to periph not supported\n");
                 res = -EINVAL;
         }
 
@@ -1309,9 +1357,7 @@ static int d40_validate_conf(struct d40_chan *d40c,
                  * src (burst x width) == dst (burst x width)
                  */
 
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] src (burst x width) != dst (burst x width)\n",
-                        __func__);
+                chan_err(d40c, "src (burst x width) != dst (burst x width)\n");
                 res = -EINVAL;
         }
 
@@ -1514,8 +1560,7 @@ static int d40_config_memcpy(struct d40_chan *d40c)
                    dma_has_cap(DMA_SLAVE, cap)) {
                 d40c->dma_cfg = *d40c->base->plat_data->memcpy_conf_phy;
         } else {
-                dev_err(&d40c->chan.dev->device, "[%s] No memcpy\n",
-                        __func__);
+                chan_err(d40c, "No memcpy\n");
                 return -EINVAL;
         }
 
@@ -1540,21 +1585,19 @@ static int d40_free_dma(struct d40_chan *d40c)
         /* Release client owned descriptors */
         if (!list_empty(&d40c->client))
                 list_for_each_entry_safe(d, _d, &d40c->client, node) {
-                        d40_pool_lli_free(d);
+                        d40_pool_lli_free(d40c, d);
                         d40_desc_remove(d);
                         d40_desc_free(d40c, d);
                 }
 
         if (phy == NULL) {
-                dev_err(&d40c->chan.dev->device, "[%s] phy == null\n",
-                        __func__);
+                chan_err(d40c, "phy == null\n");
                 return -EINVAL;
         }
 
         if (phy->allocated_src == D40_ALLOC_FREE &&
             phy->allocated_dst == D40_ALLOC_FREE) {
-                dev_err(&d40c->chan.dev->device, "[%s] channel already free\n",
-                        __func__);
+                chan_err(d40c, "channel already free\n");
                 return -EINVAL;
         }
 
@@ -1566,19 +1609,17 @@ static int d40_free_dma(struct d40_chan *d40c)
                 event = D40_TYPE_TO_EVENT(d40c->dma_cfg.src_dev_type);
                 is_src = true;
         } else {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Unknown direction\n", __func__);
+                chan_err(d40c, "Unknown direction\n");
                 return -EINVAL;
         }
 
         res = d40_channel_execute_command(d40c, D40_DMA_SUSPEND_REQ);
         if (res) {
-                dev_err(&d40c->chan.dev->device, "[%s] suspend failed\n",
-                        __func__);
+                chan_err(d40c, "suspend failed\n");
                 return res;
         }
 
-        if (d40c->log_num != D40_PHY_CHAN) {
+        if (chan_is_logical(d40c)) {
                 /* Release logical channel, deactivate the event line */
 
                 d40_config_set_event(d40c, false);
@@ -1594,9 +1635,8 @@ static int d40_free_dma(struct d40_chan *d40c)
                                 res = d40_channel_execute_command(d40c,
                                                                   D40_DMA_RUN);
                                 if (res) {
-                                        dev_err(&d40c->chan.dev->device,
-                                                "[%s] Executing RUN command\n",
-                                                __func__);
+                                        chan_err(d40c,
+                                                "Executing RUN command\n");
                                         return res;
                                 }
                         }
@@ -1609,8 +1649,7 @@ static int d40_free_dma(struct d40_chan *d40c)
         /* Release physical channel */
         res = d40_channel_execute_command(d40c, D40_DMA_STOP);
         if (res) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Failed to stop channel\n", __func__);
+                chan_err(d40c, "Failed to stop channel\n");
                 return res;
         }
         d40c->phy_chan = NULL;
@@ -1622,6 +1661,7 @@ static int d40_free_dma(struct d40_chan *d40c)
 
 static bool d40_is_paused(struct d40_chan *d40c)
 {
+        void __iomem *chanbase = chan_base(d40c);
         bool is_paused = false;
         unsigned long flags;
         void __iomem *active_reg;
@@ -1630,7 +1670,7 @@ static bool d40_is_paused(struct d40_chan *d40c)
 
         spin_lock_irqsave(&d40c->lock, flags);
 
-        if (d40c->log_num == D40_PHY_CHAN) {
+        if (chan_is_physical(d40c)) {
                 if (d40c->phy_chan->num % 2 == 0)
                         active_reg = d40c->base->virtbase + D40_DREG_ACTIVE;
                 else
@@ -1648,17 +1688,12 @@ static bool d40_is_paused(struct d40_chan *d40c)
         if (d40c->dma_cfg.dir == STEDMA40_MEM_TO_PERIPH ||
             d40c->dma_cfg.dir == STEDMA40_MEM_TO_MEM) {
                 event = D40_TYPE_TO_EVENT(d40c->dma_cfg.dst_dev_type);
-                status = readl(d40c->base->virtbase + D40_DREG_PCBASE +
-                               d40c->phy_chan->num * D40_DREG_PCDELTA +
-                               D40_CHAN_REG_SDLNK);
+                status = readl(chanbase + D40_CHAN_REG_SDLNK);
         } else if (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_MEM) {
                 event = D40_TYPE_TO_EVENT(d40c->dma_cfg.src_dev_type);
-                status = readl(d40c->base->virtbase + D40_DREG_PCBASE +
-                               d40c->phy_chan->num * D40_DREG_PCDELTA +
-                               D40_CHAN_REG_SSLNK);
+                status = readl(chanbase + D40_CHAN_REG_SSLNK);
         } else {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Unknown direction\n", __func__);
+                chan_err(d40c, "Unknown direction\n");
                 goto _exit;
         }
 
@@ -1688,114 +1723,184 @@ static u32 stedma40_residue(struct dma_chan *chan)
         return bytes_left;
 }
 
-struct dma_async_tx_descriptor *stedma40_memcpy_sg(struct dma_chan *chan,
-                                                   struct scatterlist *sgl_dst,
-                                                   struct scatterlist *sgl_src,
-                                                   unsigned int sgl_len,
-                                                   unsigned long dma_flags)
+static int
+d40_prep_sg_log(struct d40_chan *chan, struct d40_desc *desc,
+                struct scatterlist *sg_src, struct scatterlist *sg_dst,
+                unsigned int sg_len, dma_addr_t src_dev_addr,
+                dma_addr_t dst_dev_addr)
 {
-        int res;
-        struct d40_desc *d40d;
-        struct d40_chan *d40c = container_of(chan, struct d40_chan,
-                                             chan);
-        unsigned long flags;
+        struct stedma40_chan_cfg *cfg = &chan->dma_cfg;
+        struct stedma40_half_channel_info *src_info = &cfg->src_info;
+        struct stedma40_half_channel_info *dst_info = &cfg->dst_info;
+        int ret;
 
-        if (d40c->phy_chan == NULL) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Unallocated channel.\n", __func__);
-                return ERR_PTR(-EINVAL);
-        }
+        ret = d40_log_sg_to_lli(sg_src, sg_len,
+                                src_dev_addr,
+                                desc->lli_log.src,
+                                chan->log_def.lcsp1,
+                                src_info->data_width,
+                                dst_info->data_width);
 
-        spin_lock_irqsave(&d40c->lock, flags);
-        d40d = d40_desc_get(d40c);
+        ret = d40_log_sg_to_lli(sg_dst, sg_len,
+                                dst_dev_addr,
+                                desc->lli_log.dst,
+                                chan->log_def.lcsp3,
+                                dst_info->data_width,
+                                src_info->data_width);
 
-        if (d40d == NULL)
+        return ret < 0 ? ret : 0;
+}
+
+static int
+d40_prep_sg_phy(struct d40_chan *chan, struct d40_desc *desc,
+                struct scatterlist *sg_src, struct scatterlist *sg_dst,
+                unsigned int sg_len, dma_addr_t src_dev_addr,
+                dma_addr_t dst_dev_addr)
+{
+        struct stedma40_chan_cfg *cfg = &chan->dma_cfg;
+        struct stedma40_half_channel_info *src_info = &cfg->src_info;
+        struct stedma40_half_channel_info *dst_info = &cfg->dst_info;
+        unsigned long flags = 0;
+        int ret;
+
+        if (desc->cyclic)
+                flags |= LLI_CYCLIC | LLI_TERM_INT;
+
+        ret = d40_phy_sg_to_lli(sg_src, sg_len, src_dev_addr,
+                                desc->lli_phy.src,
+                                virt_to_phys(desc->lli_phy.src),
+                                chan->src_def_cfg,
+                                src_info, dst_info, flags);
+
+        ret = d40_phy_sg_to_lli(sg_dst, sg_len, dst_dev_addr,
+                                desc->lli_phy.dst,
+                                virt_to_phys(desc->lli_phy.dst),
+                                chan->dst_def_cfg,
+                                dst_info, src_info, flags);
+
+        dma_sync_single_for_device(chan->base->dev, desc->lli_pool.dma_addr,
+                                   desc->lli_pool.size, DMA_TO_DEVICE);
+
+        return ret < 0 ? ret : 0;
+}
+
+
+static struct d40_desc *
+d40_prep_desc(struct d40_chan *chan, struct scatterlist *sg,
+              unsigned int sg_len, unsigned long dma_flags)
+{
+        struct stedma40_chan_cfg *cfg = &chan->dma_cfg;
+        struct d40_desc *desc;
+        int ret;
+
+        desc = d40_desc_get(chan);
+        if (!desc)
+                return NULL;
+
+        desc->lli_len = d40_sg_2_dmalen(sg, sg_len, cfg->src_info.data_width,
+                                        cfg->dst_info.data_width);
+        if (desc->lli_len < 0) {
+                chan_err(chan, "Unaligned size\n");
                 goto err;
+        }
 
-        d40d->lli_len = d40_sg_2_dmalen(sgl_dst, sgl_len,
-                                        d40c->dma_cfg.src_info.data_width,
-                                        d40c->dma_cfg.dst_info.data_width);
-        if (d40d->lli_len < 0) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Unaligned size\n", __func__);
+        ret = d40_pool_lli_alloc(chan, desc, desc->lli_len);
+        if (ret < 0) {
+                chan_err(chan, "Could not allocate lli\n");
                 goto err;
         }
 
-        d40d->lli_current = 0;
-        d40d->txd.flags = dma_flags;
 
-        if (d40c->log_num != D40_PHY_CHAN) {
+        desc->lli_current = 0;
+        desc->txd.flags = dma_flags;
+        desc->txd.tx_submit = d40_tx_submit;
 
-                if (d40_pool_lli_alloc(d40d, d40d->lli_len, true) < 0) {
-                        dev_err(&d40c->chan.dev->device,
-                                "[%s] Out of memory\n", __func__);
-                        goto err;
-                }
+        dma_async_tx_descriptor_init(&desc->txd, &chan->chan);
 
-                (void) d40_log_sg_to_lli(sgl_src,
-                                         sgl_len,
-                                         d40d->lli_log.src,
-                                         d40c->log_def.lcsp1,
-                                         d40c->dma_cfg.src_info.data_width,
-                                         d40c->dma_cfg.dst_info.data_width);
-
-                (void) d40_log_sg_to_lli(sgl_dst,
-                                         sgl_len,
-                                         d40d->lli_log.dst,
-                                         d40c->log_def.lcsp3,
-                                         d40c->dma_cfg.dst_info.data_width,
-                                         d40c->dma_cfg.src_info.data_width);
-        } else {
-                if (d40_pool_lli_alloc(d40d, d40d->lli_len, false) < 0) {
-                        dev_err(&d40c->chan.dev->device,
-                                "[%s] Out of memory\n", __func__);
-                        goto err;
-                }
+        return desc;
+
+err:
+        d40_desc_free(chan, desc);
+        return NULL;
+}
+
+static dma_addr_t
+d40_get_dev_addr(struct d40_chan *chan, enum dma_data_direction direction)
+{
+        struct stedma40_platform_data *plat = chan->base->plat_data;
+        struct stedma40_chan_cfg *cfg = &chan->dma_cfg;
+        dma_addr_t addr;
 
-                res = d40_phy_sg_to_lli(sgl_src,
-                                        sgl_len,
-                                        0,
-                                        d40d->lli_phy.src,
-                                        virt_to_phys(d40d->lli_phy.src),
-                                        d40c->src_def_cfg,
-                                        d40c->dma_cfg.src_info.data_width,
-                                        d40c->dma_cfg.dst_info.data_width,
-                                        d40c->dma_cfg.src_info.psize);
+        if (chan->runtime_addr)
+                return chan->runtime_addr;
 
-                if (res < 0)
-                        goto err;
+        if (direction == DMA_FROM_DEVICE)
+                addr = plat->dev_rx[cfg->src_dev_type];
+        else if (direction == DMA_TO_DEVICE)
+                addr = plat->dev_tx[cfg->dst_dev_type];
 
-                res = d40_phy_sg_to_lli(sgl_dst,
-                                        sgl_len,
-                                        0,
-                                        d40d->lli_phy.dst,
-                                        virt_to_phys(d40d->lli_phy.dst),
-                                        d40c->dst_def_cfg,
-                                        d40c->dma_cfg.dst_info.data_width,
-                                        d40c->dma_cfg.src_info.data_width,
-                                        d40c->dma_cfg.dst_info.psize);
+        return addr;
+}
 
-                if (res < 0)
-                        goto err;
+static struct dma_async_tx_descriptor *
+d40_prep_sg(struct dma_chan *dchan, struct scatterlist *sg_src,
+            struct scatterlist *sg_dst, unsigned int sg_len,
+            enum dma_data_direction direction, unsigned long dma_flags)
+{
+        struct d40_chan *chan = container_of(dchan, struct d40_chan, chan);
+        dma_addr_t src_dev_addr = 0;
+        dma_addr_t dst_dev_addr = 0;
+        struct d40_desc *desc;
+        unsigned long flags;
+        int ret;
 
-                (void) dma_map_single(d40c->base->dev, d40d->lli_phy.src,
-                                      d40d->lli_pool.size, DMA_TO_DEVICE);
+        if (!chan->phy_chan) {
+                chan_err(chan, "Cannot prepare unallocated channel\n");
+                return NULL;
         }
 
-        dma_async_tx_descriptor_init(&d40d->txd, chan);
 
-        d40d->txd.tx_submit = d40_tx_submit;
+        spin_lock_irqsave(&chan->lock, flags);
 
-        spin_unlock_irqrestore(&d40c->lock, flags);
+        desc = d40_prep_desc(chan, sg_src, sg_len, dma_flags);
+        if (desc == NULL)
+                goto err;
+
+        if (sg_next(&sg_src[sg_len - 1]) == sg_src)
+                desc->cyclic = true;
+
+        if (direction != DMA_NONE) {
+                dma_addr_t dev_addr = d40_get_dev_addr(chan, direction);
+
+                if (direction == DMA_FROM_DEVICE)
+                        src_dev_addr = dev_addr;
+                else if (direction == DMA_TO_DEVICE)
+                        dst_dev_addr = dev_addr;
+        }
+
+        if (chan_is_logical(chan))
+                ret = d40_prep_sg_log(chan, desc, sg_src, sg_dst,
+                                      sg_len, src_dev_addr, dst_dev_addr);
+        else
+                ret = d40_prep_sg_phy(chan, desc, sg_src, sg_dst,
+                                      sg_len, src_dev_addr, dst_dev_addr);
+
+        if (ret) {
+                chan_err(chan, "Failed to prepare %s sg job: %d\n",
+                         chan_is_logical(chan) ? "log" : "phy", ret);
+                goto err;
+        }
+
+        spin_unlock_irqrestore(&chan->lock, flags);
+
+        return &desc->txd;
 
-        return &d40d->txd;
 err:
-        if (d40d)
-                d40_desc_free(d40c, d40d);
-        spin_unlock_irqrestore(&d40c->lock, flags);
+        if (desc)
+                d40_desc_free(chan, desc);
+        spin_unlock_irqrestore(&chan->lock, flags);
         return NULL;
 }
-EXPORT_SYMBOL(stedma40_memcpy_sg);
 
 bool stedma40_filter(struct dma_chan *chan, void *data)
 {
@@ -1818,6 +1923,38 @@ bool stedma40_filter(struct dma_chan *chan, void *data)
 }
 EXPORT_SYMBOL(stedma40_filter);
 
+static void __d40_set_prio_rt(struct d40_chan *d40c, int dev_type, bool src)
+{
+        bool realtime = d40c->dma_cfg.realtime;
+        bool highprio = d40c->dma_cfg.high_priority;
+        u32 prioreg = highprio ? D40_DREG_PSEG1 : D40_DREG_PCEG1;
+        u32 rtreg = realtime ? D40_DREG_RSEG1 : D40_DREG_RCEG1;
+        u32 event = D40_TYPE_TO_EVENT(dev_type);
+        u32 group = D40_TYPE_TO_GROUP(dev_type);
+        u32 bit = 1 << event;
+
+        /* Destination event lines are stored in the upper halfword */
+        if (!src)
+                bit <<= 16;
+
+        writel(bit, d40c->base->virtbase + prioreg + group * 4);
+        writel(bit, d40c->base->virtbase + rtreg + group * 4);
+}
+
+static void d40_set_prio_realtime(struct d40_chan *d40c)
+{
+        if (d40c->base->rev < 3)
+                return;
+
+        if ((d40c->dma_cfg.dir ==  STEDMA40_PERIPH_TO_MEM) ||
+            (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_PERIPH))
+                __d40_set_prio_rt(d40c, d40c->dma_cfg.src_dev_type, true);
+
+        if ((d40c->dma_cfg.dir ==  STEDMA40_MEM_TO_PERIPH) ||
+            (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_PERIPH))
+                __d40_set_prio_rt(d40c, d40c->dma_cfg.dst_dev_type, false);
+}
+
 /* DMA ENGINE functions */
 static int d40_alloc_chan_resources(struct dma_chan *chan)
 {
@@ -1834,9 +1971,7 @@ static int d40_alloc_chan_resources(struct dma_chan *chan)
         if (!d40c->configured) {
                 err = d40_config_memcpy(d40c);
                 if (err) {
-                        dev_err(&d40c->chan.dev->device,
-                                "[%s] Failed to configure memcpy channel\n",
-                                __func__);
+                        chan_err(d40c, "Failed to configure memcpy channel\n");
                         goto fail;
                 }
         }
@@ -1844,16 +1979,17 @@ static int d40_alloc_chan_resources(struct dma_chan *chan)
 
         err = d40_allocate_channel(d40c);
         if (err) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Failed to allocate channel\n", __func__);
+                chan_err(d40c, "Failed to allocate channel\n");
                 goto fail;
         }
 
         /* Fill in basic CFG register values */
         d40_phy_cfg(&d40c->dma_cfg, &d40c->src_def_cfg,
-                    &d40c->dst_def_cfg, d40c->log_num != D40_PHY_CHAN);
+                    &d40c->dst_def_cfg, chan_is_logical(d40c));
 
-        if (d40c->log_num != D40_PHY_CHAN) {
+        d40_set_prio_realtime(d40c);
+
+        if (chan_is_logical(d40c)) {
                 d40_log_cfg(&d40c->dma_cfg,
                             &d40c->log_def.lcsp1, &d40c->log_def.lcsp3);
 
@@ -1886,8 +2022,7 @@ static void d40_free_chan_resources(struct dma_chan *chan)
         unsigned long flags;
 
         if (d40c->phy_chan == NULL) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Cannot free unallocated channel\n", __func__);
+                chan_err(d40c, "Cannot free unallocated channel\n");
                 return;
         }
 
@@ -1897,8 +2032,7 @@ static void d40_free_chan_resources(struct dma_chan *chan)
         err = d40_free_dma(d40c);
 
         if (err)
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Failed to free channel\n", __func__);
+                chan_err(d40c, "Failed to free channel\n");
         spin_unlock_irqrestore(&d40c->lock, flags);
 }
 
@@ -1908,251 +2042,31 @@ static struct dma_async_tx_descriptor *d40_prep_memcpy(struct dma_chan *chan,
                                                        size_t size,
                                                        unsigned long dma_flags)
 {
-        struct d40_desc *d40d;
-        struct d40_chan *d40c = container_of(chan, struct d40_chan,
-                                             chan);
-        unsigned long flags;
-
-        if (d40c->phy_chan == NULL) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Channel is not allocated.\n", __func__);
-                return ERR_PTR(-EINVAL);
-        }
-
-        spin_lock_irqsave(&d40c->lock, flags);
-        d40d = d40_desc_get(d40c);
-
-        if (d40d == NULL) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Descriptor is NULL\n", __func__);
-                goto err;
-        }
+        struct scatterlist dst_sg;
+        struct scatterlist src_sg;
 
-        d40d->txd.flags = dma_flags;
-        d40d->lli_len = d40_size_2_dmalen(size,
-                                          d40c->dma_cfg.src_info.data_width,
-                                          d40c->dma_cfg.dst_info.data_width);
-        if (d40d->lli_len < 0) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Unaligned size\n", __func__);
-                goto err;
-        }
+        sg_init_table(&dst_sg, 1);
+        sg_init_table(&src_sg, 1);
 
+        sg_dma_address(&dst_sg) = dst;
+        sg_dma_address(&src_sg) = src;
 
-        dma_async_tx_descriptor_init(&d40d->txd, chan);
+        sg_dma_len(&dst_sg) = size;
+        sg_dma_len(&src_sg) = size;
 
-        d40d->txd.tx_submit = d40_tx_submit;
-
-        if (d40c->log_num != D40_PHY_CHAN) {
-
-                if (d40_pool_lli_alloc(d40d, d40d->lli_len, true) < 0) {
-                        dev_err(&d40c->chan.dev->device,
-                                "[%s] Out of memory\n", __func__);
-                        goto err;
-                }
-                d40d->lli_current = 0;
-
-                if (d40_log_buf_to_lli(d40d->lli_log.src,
-                                       src,
-                                       size,
-                                       d40c->log_def.lcsp1,
-                                       d40c->dma_cfg.src_info.data_width,
-                                       d40c->dma_cfg.dst_info.data_width,
-                                       true) == NULL)
-                        goto err;
-
-                if (d40_log_buf_to_lli(d40d->lli_log.dst,
-                                       dst,
-                                       size,
-                                       d40c->log_def.lcsp3,
-                                       d40c->dma_cfg.dst_info.data_width,
-                                       d40c->dma_cfg.src_info.data_width,
-                                       true) == NULL)
-                        goto err;
-
-        } else {
-
-                if (d40_pool_lli_alloc(d40d, d40d->lli_len, false) < 0) {
-                        dev_err(&d40c->chan.dev->device,
-                                "[%s] Out of memory\n", __func__);
-                        goto err;
-                }
-
-                if (d40_phy_buf_to_lli(d40d->lli_phy.src,
-                                       src,
-                                       size,
-                                       d40c->dma_cfg.src_info.psize,
-                                       0,
-                                       d40c->src_def_cfg,
-                                       true,
-                                       d40c->dma_cfg.src_info.data_width,
-                                       d40c->dma_cfg.dst_info.data_width,
-                                       false) == NULL)
-                        goto err;
-
-                if (d40_phy_buf_to_lli(d40d->lli_phy.dst,
-                                       dst,
-                                       size,
-                                       d40c->dma_cfg.dst_info.psize,
-                                       0,
-                                       d40c->dst_def_cfg,
-                                       true,
-                                       d40c->dma_cfg.dst_info.data_width,
-                                       d40c->dma_cfg.src_info.data_width,
-                                       false) == NULL)
-                        goto err;
-
-                (void) dma_map_single(d40c->base->dev, d40d->lli_phy.src,
-                                      d40d->lli_pool.size, DMA_TO_DEVICE);
-        }
-
-        spin_unlock_irqrestore(&d40c->lock, flags);
-        return &d40d->txd;
-
-err:
-        if (d40d)
-                d40_desc_free(d40c, d40d);
-        spin_unlock_irqrestore(&d40c->lock, flags);
-        return NULL;
+        return d40_prep_sg(chan, &src_sg, &dst_sg, 1, DMA_NONE, dma_flags);
 }
 
 static struct dma_async_tx_descriptor *
-d40_prep_sg(struct dma_chan *chan,
-            struct scatterlist *dst_sg, unsigned int dst_nents,
-            struct scatterlist *src_sg, unsigned int src_nents,
-            unsigned long dma_flags)
+d40_prep_memcpy_sg(struct dma_chan *chan,
+                   struct scatterlist *dst_sg, unsigned int dst_nents,
+                   struct scatterlist *src_sg, unsigned int src_nents,
+                   unsigned long dma_flags)
 {
         if (dst_nents != src_nents)
                 return NULL;
 
-        return stedma40_memcpy_sg(chan, dst_sg, src_sg, dst_nents, dma_flags);
-}
-
-static int d40_prep_slave_sg_log(struct d40_desc *d40d,
-                                 struct d40_chan *d40c,
-                                 struct scatterlist *sgl,
-                                 unsigned int sg_len,
-                                 enum dma_data_direction direction,
-                                 unsigned long dma_flags)
-{
-        dma_addr_t dev_addr = 0;
-        int total_size;
-
-        d40d->lli_len = d40_sg_2_dmalen(sgl, sg_len,
-                                        d40c->dma_cfg.src_info.data_width,
-                                        d40c->dma_cfg.dst_info.data_width);
-        if (d40d->lli_len < 0) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Unaligned size\n", __func__);
-                return -EINVAL;
-        }
-
-        if (d40_pool_lli_alloc(d40d, d40d->lli_len, true) < 0) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Out of memory\n", __func__);
-                return -ENOMEM;
-        }
-
-        d40d->lli_current = 0;
-
-        if (direction == DMA_FROM_DEVICE)
-                if (d40c->runtime_addr)
-                        dev_addr = d40c->runtime_addr;
-                else
-                        dev_addr = d40c->base->plat_data->dev_rx[d40c->dma_cfg.src_dev_type];
-        else if (direction == DMA_TO_DEVICE)
-                if (d40c->runtime_addr)
-                        dev_addr = d40c->runtime_addr;
-                else
-                        dev_addr = d40c->base->plat_data->dev_tx[d40c->dma_cfg.dst_dev_type];
-
-        else
-                return -EINVAL;
-
-        total_size = d40_log_sg_to_dev(sgl, sg_len,
-                                       &d40d->lli_log,
-                                       &d40c->log_def,
-                                       d40c->dma_cfg.src_info.data_width,
-                                       d40c->dma_cfg.dst_info.data_width,
-                                       direction,
-                                       dev_addr);
-
-        if (total_size < 0)
-                return -EINVAL;
-
-        return 0;
-}
-
-static int d40_prep_slave_sg_phy(struct d40_desc *d40d,
-                                 struct d40_chan *d40c,
-                                 struct scatterlist *sgl,
-                                 unsigned int sgl_len,
-                                 enum dma_data_direction direction,
-                                 unsigned long dma_flags)
-{
-        dma_addr_t src_dev_addr;
-        dma_addr_t dst_dev_addr;
-        int res;
-
-        d40d->lli_len = d40_sg_2_dmalen(sgl, sgl_len,
-                                        d40c->dma_cfg.src_info.data_width,
-                                        d40c->dma_cfg.dst_info.data_width);
-        if (d40d->lli_len < 0) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Unaligned size\n", __func__);
-                return -EINVAL;
-        }
-
-        if (d40_pool_lli_alloc(d40d, d40d->lli_len, false) < 0) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Out of memory\n", __func__);
-                return -ENOMEM;
-        }
-
-        d40d->lli_current = 0;
-
-        if (direction == DMA_FROM_DEVICE) {
-                dst_dev_addr = 0;
-                if (d40c->runtime_addr)
-                        src_dev_addr = d40c->runtime_addr;
-                else
-                        src_dev_addr = d40c->base->plat_data->dev_rx[d40c->dma_cfg.src_dev_type];
-        } else if (direction == DMA_TO_DEVICE) {
-                if (d40c->runtime_addr)
-                        dst_dev_addr = d40c->runtime_addr;
-                else
-                        dst_dev_addr = d40c->base->plat_data->dev_tx[d40c->dma_cfg.dst_dev_type];
-                src_dev_addr = 0;
-        } else
-                return -EINVAL;
-
-        res = d40_phy_sg_to_lli(sgl,
-                                sgl_len,
-                                src_dev_addr,
-                                d40d->lli_phy.src,
-                                virt_to_phys(d40d->lli_phy.src),
-                                d40c->src_def_cfg,
-                                d40c->dma_cfg.src_info.data_width,
-                                d40c->dma_cfg.dst_info.data_width,
-                                d40c->dma_cfg.src_info.psize);
-        if (res < 0)
-                return res;
-
-        res = d40_phy_sg_to_lli(sgl,
-                                sgl_len,
-                                dst_dev_addr,
-                                d40d->lli_phy.dst,
-                                virt_to_phys(d40d->lli_phy.dst),
-                                d40c->dst_def_cfg,
-                                d40c->dma_cfg.dst_info.data_width,
-                                d40c->dma_cfg.src_info.data_width,
-                                d40c->dma_cfg.dst_info.psize);
-        if (res < 0)
-                return res;
-
-        (void) dma_map_single(d40c->base->dev, d40d->lli_phy.src,
-                              d40d->lli_pool.size, DMA_TO_DEVICE);
-        return 0;
+        return d40_prep_sg(chan, src_sg, dst_sg, src_nents, DMA_NONE, dma_flags);
 }
 
 static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
@@ -2161,52 +2075,40 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
                                                          enum dma_data_direction direction,
                                                          unsigned long dma_flags)
 {
-        struct d40_desc *d40d;
-        struct d40_chan *d40c = container_of(chan, struct d40_chan,
-                                             chan);
-        unsigned long flags;
-        int err;
-
-        if (d40c->phy_chan == NULL) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Cannot prepare unallocated channel\n", __func__);
-                return ERR_PTR(-EINVAL);
-        }
+        if (direction != DMA_FROM_DEVICE && direction != DMA_TO_DEVICE)
+                return NULL;
 
-        spin_lock_irqsave(&d40c->lock, flags);
-        d40d = d40_desc_get(d40c);
+        return d40_prep_sg(chan, sgl, sgl, sg_len, direction, dma_flags);
+}
 
-        if (d40d == NULL)
-                goto err;
+static struct dma_async_tx_descriptor *
+dma40_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t dma_addr,
+                     size_t buf_len, size_t period_len,
+                     enum dma_data_direction direction)
+{
+        unsigned int periods = buf_len / period_len;
+        struct dma_async_tx_descriptor *txd;
+        struct scatterlist *sg;
+        int i;
 
-        if (d40c->log_num != D40_PHY_CHAN)
-                err = d40_prep_slave_sg_log(d40d, d40c, sgl, sg_len,
-                                            direction, dma_flags);
-        else
-                err = d40_prep_slave_sg_phy(d40d, d40c, sgl, sg_len,
-                                            direction, dma_flags);
-        if (err) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Failed to prepare %s slave sg job: %d\n",
-                        __func__,
-                        d40c->log_num != D40_PHY_CHAN ? "log" : "phy", err);
-                goto err;
+        sg = kcalloc(periods + 1, sizeof(struct scatterlist), GFP_KERNEL);
+        for (i = 0; i < periods; i++) {
+                sg_dma_address(&sg[i]) = dma_addr;
+                sg_dma_len(&sg[i]) = period_len;
+                dma_addr += period_len;
         }
 
-        d40d->txd.flags = dma_flags;
+        sg[periods].offset = 0;
+        sg[periods].length = 0;
+        sg[periods].page_link =
+                ((unsigned long)sg | 0x01) & ~0x02;
 
-        dma_async_tx_descriptor_init(&d40d->txd, chan);
+        txd = d40_prep_sg(chan, sg, sg, periods, direction,
+                          DMA_PREP_INTERRUPT);
 
-        d40d->txd.tx_submit = d40_tx_submit;
+        kfree(sg);
 
-        spin_unlock_irqrestore(&d40c->lock, flags);
-        return &d40d->txd;
-
-err:
-        if (d40d)
-                d40_desc_free(d40c, d40d);
-        spin_unlock_irqrestore(&d40c->lock, flags);
-        return NULL;
+        return txd;
 }
 
 static enum dma_status d40_tx_status(struct dma_chan *chan,
@@ -2219,9 +2121,7 @@ static enum dma_status d40_tx_status(struct dma_chan *chan,
         int ret;
 
         if (d40c->phy_chan == NULL) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Cannot read status of unallocated channel\n",
-                        __func__);
+                chan_err(d40c, "Cannot read status of unallocated channel\n");
                 return -EINVAL;
         }
 
@@ -2245,8 +2145,7 @@ static void d40_issue_pending(struct dma_chan *chan)
         unsigned long flags;
 
         if (d40c->phy_chan == NULL) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Channel is not allocated!\n", __func__);
+                chan_err(d40c, "Channel is not allocated!\n");
                 return;
         }
 
@@ -2339,7 +2238,7 @@ static void d40_set_runtime_config(struct dma_chan *chan,
                 return;
         }
 
-        if (d40c->log_num != D40_PHY_CHAN) {
+        if (chan_is_logical(d40c)) {
                 if (config_maxburst >= 16)
                         psize = STEDMA40_PSIZE_LOG_16;
                 else if (config_maxburst >= 8)
@@ -2372,7 +2271,7 @@ static void d40_set_runtime_config(struct dma_chan *chan,
         cfg->dst_info.flow_ctrl = STEDMA40_NO_FLOW_CTRL;
 
         /* Fill in register values */
-        if (d40c->log_num != D40_PHY_CHAN)
+        if (chan_is_logical(d40c))
                 d40_log_cfg(cfg, &d40c->log_def.lcsp1, &d40c->log_def.lcsp3);
         else
                 d40_phy_cfg(cfg, &d40c->src_def_cfg,
@@ -2393,25 +2292,20 @@ static void d40_set_runtime_config(struct dma_chan *chan,
 static int d40_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
                        unsigned long arg)
 {
-        unsigned long flags;
         struct d40_chan *d40c = container_of(chan, struct d40_chan, chan);
 
         if (d40c->phy_chan == NULL) {
-                dev_err(&d40c->chan.dev->device,
-                        "[%s] Channel is not allocated!\n", __func__);
+                chan_err(d40c, "Channel is not allocated!\n");
                 return -EINVAL;
         }
 
         switch (cmd) {
         case DMA_TERMINATE_ALL:
-                spin_lock_irqsave(&d40c->lock, flags);
-                d40_term_all(d40c);
-                spin_unlock_irqrestore(&d40c->lock, flags);
-                return 0;
+                return d40_terminate_all(d40c);
         case DMA_PAUSE:
-                return d40_pause(chan);
+                return d40_pause(d40c);
         case DMA_RESUME:
-                return d40_resume(chan);
+                return d40_resume(d40c);
         case DMA_SLAVE_CONFIG:
                 d40_set_runtime_config(chan,
                         (struct dma_slave_config *) arg);
@@ -2456,6 +2350,35 @@ static void __init d40_chan_init(struct d40_base *base, struct dma_device *dma,
         }
 }
 
+static void d40_ops_init(struct d40_base *base, struct dma_device *dev)
+{
+        if (dma_has_cap(DMA_SLAVE, dev->cap_mask))
+                dev->device_prep_slave_sg = d40_prep_slave_sg;
+
+        if (dma_has_cap(DMA_MEMCPY, dev->cap_mask)) {
+                dev->device_prep_dma_memcpy = d40_prep_memcpy;
+
+                /*
+                 * This controller can only access address at even
+                 * 32bit boundaries, i.e. 2^2
+                 */
+                dev->copy_align = 2;
+        }
+
+        if (dma_has_cap(DMA_SG, dev->cap_mask))
+                dev->device_prep_dma_sg = d40_prep_memcpy_sg;
+
+        if (dma_has_cap(DMA_CYCLIC, dev->cap_mask))
+                dev->device_prep_dma_cyclic = dma40_prep_dma_cyclic;
+
+        dev->device_alloc_chan_resources = d40_alloc_chan_resources;
+        dev->device_free_chan_resources = d40_free_chan_resources;
+        dev->device_issue_pending = d40_issue_pending;
+        dev->device_tx_status = d40_tx_status;
+        dev->device_control = d40_control;
+        dev->dev = base->dev;
+}
+
 static int __init d40_dmaengine_init(struct d40_base *base,
                                      int num_reserved_chans)
 {
@@ -2466,23 +2389,14 @@ static int __init d40_dmaengine_init(struct d40_base *base,
 
         dma_cap_zero(base->dma_slave.cap_mask);
         dma_cap_set(DMA_SLAVE, base->dma_slave.cap_mask);
+        dma_cap_set(DMA_CYCLIC, base->dma_slave.cap_mask);
 
-        base->dma_slave.device_alloc_chan_resources = d40_alloc_chan_resources;
-        base->dma_slave.device_free_chan_resources = d40_free_chan_resources;
-        base->dma_slave.device_prep_dma_memcpy = d40_prep_memcpy;
-        base->dma_slave.device_prep_dma_sg = d40_prep_sg;
-        base->dma_slave.device_prep_slave_sg = d40_prep_slave_sg;
-        base->dma_slave.device_tx_status = d40_tx_status;
-        base->dma_slave.device_issue_pending = d40_issue_pending;
-        base->dma_slave.device_control = d40_control;
-        base->dma_slave.dev = base->dev;
+        d40_ops_init(base, &base->dma_slave);
 
         err = dma_async_device_register(&base->dma_slave);
 
         if (err) {
-                dev_err(base->dev,
-                        "[%s] Failed to register slave channels\n",
-                        __func__);
+                d40_err(base->dev, "Failed to register slave channels\n");
                 goto failure1;
         }
 
@@ -2491,29 +2405,15 @@ static int __init d40_dmaengine_init(struct d40_base *base,
 
         dma_cap_zero(base->dma_memcpy.cap_mask);
         dma_cap_set(DMA_MEMCPY, base->dma_memcpy.cap_mask);
-        dma_cap_set(DMA_SG, base->dma_slave.cap_mask);
-
-        base->dma_memcpy.device_alloc_chan_resources = d40_alloc_chan_resources;
-        base->dma_memcpy.device_free_chan_resources = d40_free_chan_resources;
-        base->dma_memcpy.device_prep_dma_memcpy = d40_prep_memcpy;
-        base->dma_slave.device_prep_dma_sg = d40_prep_sg;
-        base->dma_memcpy.device_prep_slave_sg = d40_prep_slave_sg;
-        base->dma_memcpy.device_tx_status = d40_tx_status;
-        base->dma_memcpy.device_issue_pending = d40_issue_pending;
-        base->dma_memcpy.device_control = d40_control;
-        base->dma_memcpy.dev = base->dev;
-        /*
-         * This controller can only access address at even
-         * 32bit boundaries, i.e. 2^2
-         */
-        base->dma_memcpy.copy_align = 2;
+        dma_cap_set(DMA_SG, base->dma_memcpy.cap_mask);
+
+        d40_ops_init(base, &base->dma_memcpy);
 
         err = dma_async_device_register(&base->dma_memcpy);
 
         if (err) {
-                dev_err(base->dev,
-                        "[%s] Failed to regsiter memcpy only channels\n",
-                        __func__);
+                d40_err(base->dev,
+                        "Failed to regsiter memcpy only channels\n");
                 goto failure2;
         }
 
@@ -2523,24 +2423,15 @@ static int __init d40_dmaengine_init(struct d40_base *base,
         dma_cap_zero(base->dma_both.cap_mask);
         dma_cap_set(DMA_SLAVE, base->dma_both.cap_mask);
         dma_cap_set(DMA_MEMCPY, base->dma_both.cap_mask);
-        dma_cap_set(DMA_SG, base->dma_slave.cap_mask);
-
-        base->dma_both.device_alloc_chan_resources = d40_alloc_chan_resources;
-        base->dma_both.device_free_chan_resources = d40_free_chan_resources;
-        base->dma_both.device_prep_dma_memcpy = d40_prep_memcpy;
-        base->dma_slave.device_prep_dma_sg = d40_prep_sg;
-        base->dma_both.device_prep_slave_sg = d40_prep_slave_sg;
-        base->dma_both.device_tx_status = d40_tx_status;
-        base->dma_both.device_issue_pending = d40_issue_pending;
-        base->dma_both.device_control = d40_control;
-        base->dma_both.dev = base->dev;
-        base->dma_both.copy_align = 2;
+        dma_cap_set(DMA_SG, base->dma_both.cap_mask);
+        dma_cap_set(DMA_CYCLIC, base->dma_slave.cap_mask);
+
+        d40_ops_init(base, &base->dma_both);
         err = dma_async_device_register(&base->dma_both);
 
         if (err) {
-                dev_err(base->dev,
-                        "[%s] Failed to register logical and physical capable channels\n",
-                        __func__);
+                d40_err(base->dev,
+                        "Failed to register logical and physical capable channels\n");
                 goto failure3;
         }
         return 0;
@@ -2616,9 +2507,10 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev)
                 { .reg = D40_DREG_PERIPHID1, .val = 0x0000},
                 /*
                  * D40_DREG_PERIPHID2 Depends on HW revision:
-                 *  MOP500/HREF ED has 0x0008,
+                 *  DB8500ed has 0x0008,
                  *  ? has 0x0018,
-                 *  HREF V1 has 0x0028
+                 *  DB8500v1 has 0x0028
+                 *  DB8500v2 has 0x0038
                  */
                 { .reg = D40_DREG_PERIPHID3, .val = 0x0000},
 
@@ -2642,8 +2534,7 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev)
         clk = clk_get(&pdev->dev, NULL);
 
         if (IS_ERR(clk)) {
-                dev_err(&pdev->dev, "[%s] No matching clock found\n",
-                        __func__);
+                d40_err(&pdev->dev, "No matching clock found\n");
                 goto failure;
         }
 
@@ -2666,9 +2557,8 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev)
         for (i = 0; i < ARRAY_SIZE(dma_id_regs); i++) {
                 if (dma_id_regs[i].val !=
                     readl(virtbase + dma_id_regs[i].reg)) {
-                        dev_err(&pdev->dev,
-                                "[%s] Unknown hardware! Expected 0x%x at 0x%x but got 0x%x\n",
-                                __func__,
+                        d40_err(&pdev->dev,
+                                "Unknown hardware! Expected 0x%x at 0x%x but got 0x%x\n",
                                 dma_id_regs[i].val,
                                 dma_id_regs[i].reg,
                                 readl(virtbase + dma_id_regs[i].reg));
@@ -2681,9 +2571,8 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev)
 
         if ((val & D40_DREG_PERIPHID2_DESIGNER_MASK) !=
             D40_HW_DESIGNER) {
-                dev_err(&pdev->dev,
-                        "[%s] Unknown designer! Got %x wanted %x\n",
-                        __func__, val & D40_DREG_PERIPHID2_DESIGNER_MASK,
+                d40_err(&pdev->dev, "Unknown designer! Got %x wanted %x\n",
+                        val & D40_DREG_PERIPHID2_DESIGNER_MASK,
                         D40_HW_DESIGNER);
                 goto failure;
         }
@@ -2713,7 +2602,7 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev)
                        sizeof(struct d40_chan), GFP_KERNEL);
 
         if (base == NULL) {
-                dev_err(&pdev->dev, "[%s] Out of memory\n", __func__);
+                d40_err(&pdev->dev, "Out of memory\n");
                 goto failure;
         }
 
@@ -2860,6 +2749,7 @@ static void __init d40_hw_init(struct d40_base *base)
 
 static int __init d40_lcla_allocate(struct d40_base *base)
 {
+        struct d40_lcla_pool *pool = &base->lcla_pool;
         unsigned long *page_list;
         int i, j;
         int ret = 0;
@@ -2885,9 +2775,8 @@ static int __init d40_lcla_allocate(struct d40_base *base)
                                                 base->lcla_pool.pages);
                 if (!page_list[i]) {
 
-                        dev_err(base->dev,
-                                "[%s] Failed to allocate %d pages.\n",
-                                __func__, base->lcla_pool.pages);
+                        d40_err(base->dev, "Failed to allocate %d pages.\n",
+                                base->lcla_pool.pages);
 
                         for (j = 0; j < i; j++)
                                 free_pages(page_list[j], base->lcla_pool.pages);
@@ -2925,6 +2814,15 @@ static int __init d40_lcla_allocate(struct d40_base *base)
                                                  LCLA_ALIGNMENT);
         }
 
+        pool->dma_addr = dma_map_single(base->dev, pool->base,
+                                        SZ_1K * base->num_phy_chans,
+                                        DMA_TO_DEVICE);
+        if (dma_mapping_error(base->dev, pool->dma_addr)) {
+                pool->dma_addr = 0;
+                ret = -ENOMEM;
+                goto failure;
+        }
+
         writel(virt_to_phys(base->lcla_pool.base),
                base->virtbase + D40_DREG_LCLA);
 failure:
@@ -2957,9 +2855,7 @@ static int __init d40_probe(struct platform_device *pdev)
         res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "lcpa");
         if (!res) {
                 ret = -ENOENT;
-                dev_err(&pdev->dev,
-                        "[%s] No \"lcpa\" memory resource\n",
-                        __func__);
+                d40_err(&pdev->dev, "No \"lcpa\" memory resource\n");
                 goto failure;
         }
         base->lcpa_size = resource_size(res);
@@ -2968,9 +2864,9 @@ static int __init d40_probe(struct platform_device *pdev)
         if (request_mem_region(res->start, resource_size(res),
                                D40_NAME " I/O lcpa") == NULL) {
                 ret = -EBUSY;
-                dev_err(&pdev->dev,
-                        "[%s] Failed to request LCPA region 0x%x-0x%x\n",
-                        __func__, res->start, res->end);
+                d40_err(&pdev->dev,
+                        "Failed to request LCPA region 0x%x-0x%x\n",
+                        res->start, res->end);
                 goto failure;
         }
 
@@ -2986,16 +2882,13 @@ static int __init d40_probe(struct platform_device *pdev)
         base->lcpa_base = ioremap(res->start, resource_size(res));
         if (!base->lcpa_base) {
                 ret = -ENOMEM;
-                dev_err(&pdev->dev,
-                        "[%s] Failed to ioremap LCPA region\n",
-                        __func__);
+                d40_err(&pdev->dev, "Failed to ioremap LCPA region\n");
                 goto failure;
         }
 
         ret = d40_lcla_allocate(base);
         if (ret) {
-                dev_err(&pdev->dev, "[%s] Failed to allocate LCLA area\n",
-                        __func__);
+                d40_err(&pdev->dev, "Failed to allocate LCLA area\n");
                 goto failure;
         }
 
@@ -3004,9 +2897,8 @@ static int __init d40_probe(struct platform_device *pdev)
         base->irq = platform_get_irq(pdev, 0);
 
         ret = request_irq(base->irq, d40_handle_interrupt, 0, D40_NAME, base);
-
         if (ret) {
-                dev_err(&pdev->dev, "[%s] No IRQ defined\n", __func__);
+                d40_err(&pdev->dev, "No IRQ defined\n");
                 goto failure;
         }
 
@@ -3025,6 +2917,12 @@ failure:
                         kmem_cache_destroy(base->desc_slab);
                 if (base->virtbase)
                         iounmap(base->virtbase);
+
+                if (base->lcla_pool.dma_addr)
+                        dma_unmap_single(base->dev, base->lcla_pool.dma_addr,
+                                         SZ_1K * base->num_phy_chans,
+                                         DMA_TO_DEVICE);
+
                 if (!base->lcla_pool.base_unaligned && base->lcla_pool.base)
                         free_pages((unsigned long)base->lcla_pool.base,
                                    base->lcla_pool.pages);
@@ -3049,7 +2947,7 @@ failure:
                 kfree(base);
         }
 
-        dev_err(&pdev->dev, "[%s] probe failed\n", __func__);
+        d40_err(&pdev->dev, "probe failed\n");
         return ret;
 }
 
@@ -3060,7 +2958,7 @@ static struct platform_driver d40_driver = {
         },
 };
 
-int __init stedma40_init(void)
+static int __init stedma40_init(void)
 {
         return platform_driver_probe(&d40_driver, d40_probe);
 }
diff --git a/drivers/dma/ste_dma40_ll.c b/drivers/dma/ste_dma40_ll.c
index 0b096a38322d..cad9e1daedff 100644
--- a/drivers/dma/ste_dma40_ll.c
+++ b/drivers/dma/ste_dma40_ll.c
@@ -125,13 +125,15 @@ void d40_phy_cfg(struct stedma40_chan_cfg *cfg,
 static int d40_phy_fill_lli(struct d40_phy_lli *lli,
                             dma_addr_t data,
                             u32 data_size,
-                            int psize,
                             dma_addr_t next_lli,
                             u32 reg_cfg,
-                            bool term_int,
-                            u32 data_width,
-                            bool is_device)
+                            struct stedma40_half_channel_info *info,
+                            unsigned int flags)
 {
+        bool addr_inc = flags & LLI_ADDR_INC;
+        bool term_int = flags & LLI_TERM_INT;
+        unsigned int data_width = info->data_width;
+        int psize = info->psize;
         int num_elems;
 
         if (psize == STEDMA40_PSIZE_PHY_1)
@@ -154,7 +156,7 @@ static int d40_phy_fill_lli(struct d40_phy_lli *lli,
          * Distance to next element sized entry.
          * Usually the size of the element unless you want gaps.
          */
-        if (!is_device)
+        if (addr_inc)
                 lli->reg_elt |= (0x1 << data_width) <<
                         D40_SREG_ELEM_PHY_EIDX_POS;
 
@@ -198,47 +200,51 @@ static int d40_seg_size(int size, int data_width1, int data_width2)
         return seg_max;
 }
 
-struct d40_phy_lli *d40_phy_buf_to_lli(struct d40_phy_lli *lli,
-                                       dma_addr_t addr,
-                                       u32 size,
-                                       int psize,
-                                       dma_addr_t lli_phys,
-                                       u32 reg_cfg,
-                                       bool term_int,
-                                       u32 data_width1,
-                                       u32 data_width2,
-                                       bool is_device)
+static struct d40_phy_lli *
+d40_phy_buf_to_lli(struct d40_phy_lli *lli, dma_addr_t addr, u32 size,
+                   dma_addr_t lli_phys, dma_addr_t first_phys, u32 reg_cfg,
+                   struct stedma40_half_channel_info *info,
+                   struct stedma40_half_channel_info *otherinfo,
+                   unsigned long flags)
 {
+        bool lastlink = flags & LLI_LAST_LINK;
+        bool addr_inc = flags & LLI_ADDR_INC;
+        bool term_int = flags & LLI_TERM_INT;
+        bool cyclic = flags & LLI_CYCLIC;
         int err;
         dma_addr_t next = lli_phys;
         int size_rest = size;
         int size_seg = 0;
 
+        /*
+         * This piece may be split up based on d40_seg_size(); we only want the
+         * term int on the last part.
+         */
+        if (term_int)
+                flags &= ~LLI_TERM_INT;
+
         do {
-                size_seg = d40_seg_size(size_rest, data_width1, data_width2);
+                size_seg = d40_seg_size(size_rest, info->data_width,
+                                        otherinfo->data_width);
                 size_rest -= size_seg;
 
-                if (term_int && size_rest == 0)
-                        next = 0;
+                if (size_rest == 0 && term_int)
+                        flags |= LLI_TERM_INT;
+
+                if (size_rest == 0 && lastlink)
+                        next = cyclic ? first_phys : 0;
                 else
                         next = ALIGN(next + sizeof(struct d40_phy_lli),
                                      D40_LLI_ALIGN);
 
-                err = d40_phy_fill_lli(lli,
-                                       addr,
-                                       size_seg,
-                                       psize,
-                                       next,
-                                       reg_cfg,
-                                       !next,
-                                       data_width1,
-                                       is_device);
+                err = d40_phy_fill_lli(lli, addr, size_seg, next,
+                                       reg_cfg, info, flags);
 
                 if (err)
                         goto err;
 
                 lli++;
-                if (!is_device)
+                if (addr_inc)
                         addr += size_seg;
         } while (size_rest);
 
@@ -254,39 +260,35 @@ int d40_phy_sg_to_lli(struct scatterlist *sg,
                       struct d40_phy_lli *lli_sg,
                       dma_addr_t lli_phys,
                       u32 reg_cfg,
-                      u32 data_width1,
-                      u32 data_width2,
-                      int psize)
+                      struct stedma40_half_channel_info *info,
+                      struct stedma40_half_channel_info *otherinfo,
+                      unsigned long flags)
 {
         int total_size = 0;
         int i;
         struct scatterlist *current_sg = sg;
-        dma_addr_t dst;
         struct d40_phy_lli *lli = lli_sg;
         dma_addr_t l_phys = lli_phys;
 
+        if (!target)
+                flags |= LLI_ADDR_INC;
+
         for_each_sg(sg, current_sg, sg_len, i) {
+                dma_addr_t sg_addr = sg_dma_address(current_sg);
+                unsigned int len = sg_dma_len(current_sg);
+                dma_addr_t dst = target ?: sg_addr;
 
                 total_size += sg_dma_len(current_sg);
 
-                if (target)
-                        dst = target;
-                else
-                        dst = sg_phys(current_sg);
+                if (i == sg_len - 1)
+                        flags |= LLI_TERM_INT | LLI_LAST_LINK;
 
                 l_phys = ALIGN(lli_phys + (lli - lli_sg) *
                                sizeof(struct d40_phy_lli), D40_LLI_ALIGN);
 
-                lli = d40_phy_buf_to_lli(lli,
-                                         dst,
-                                         sg_dma_len(current_sg),
-                                         psize,
-                                         l_phys,
-                                         reg_cfg,
-                                         sg_len - 1 == i,
-                                         data_width1,
-                                         data_width2,
-                                         target == dst);
+                lli = d40_phy_buf_to_lli(lli, dst, len, l_phys, lli_phys,
+                                         reg_cfg, info, otherinfo, flags);
+
                 if (lli == NULL)
                         return -EINVAL;
         }
@@ -295,45 +297,22 @@ int d40_phy_sg_to_lli(struct scatterlist *sg,
 }
 
 
-void d40_phy_lli_write(void __iomem *virtbase,
-                       u32 phy_chan_num,
-                       struct d40_phy_lli *lli_dst,
-                       struct d40_phy_lli *lli_src)
-{
-
-        writel(lli_src->reg_cfg, virtbase + D40_DREG_PCBASE +
-               phy_chan_num * D40_DREG_PCDELTA + D40_CHAN_REG_SSCFG);
-        writel(lli_src->reg_elt, virtbase + D40_DREG_PCBASE +
-               phy_chan_num * D40_DREG_PCDELTA + D40_CHAN_REG_SSELT);
-        writel(lli_src->reg_ptr, virtbase + D40_DREG_PCBASE +
-               phy_chan_num * D40_DREG_PCDELTA + D40_CHAN_REG_SSPTR);
-        writel(lli_src->reg_lnk, virtbase + D40_DREG_PCBASE +
-               phy_chan_num * D40_DREG_PCDELTA + D40_CHAN_REG_SSLNK);
-
-        writel(lli_dst->reg_cfg, virtbase + D40_DREG_PCBASE +
-               phy_chan_num * D40_DREG_PCDELTA + D40_CHAN_REG_SDCFG);
-        writel(lli_dst->reg_elt, virtbase + D40_DREG_PCBASE +
-               phy_chan_num * D40_DREG_PCDELTA + D40_CHAN_REG_SDELT);
-        writel(lli_dst->reg_ptr, virtbase + D40_DREG_PCBASE +
-               phy_chan_num * D40_DREG_PCDELTA + D40_CHAN_REG_SDPTR);
-        writel(lli_dst->reg_lnk, virtbase + D40_DREG_PCBASE +
-               phy_chan_num * D40_DREG_PCDELTA + D40_CHAN_REG_SDLNK);
-
-}
-
 /* DMA logical lli operations */
 
 static void d40_log_lli_link(struct d40_log_lli *lli_dst,
                              struct d40_log_lli *lli_src,
-                             int next)
+                             int next, unsigned int flags)
 {
+        bool interrupt = flags & LLI_TERM_INT;
         u32 slos = 0;
         u32 dlos = 0;
 
         if (next != -EINVAL) {
                 slos = next * 2;
                 dlos = next * 2 + 1;
-        } else {
+        }
+
+        if (interrupt) {
                 lli_dst->lcsp13 |= D40_MEM_LCSP1_SCFG_TIM_MASK;
                 lli_dst->lcsp13 |= D40_MEM_LCSP3_DTCP_MASK;
         }
@@ -348,9 +327,9 @@ static void d40_log_lli_link(struct d40_log_lli *lli_dst,
 void d40_log_lli_lcpa_write(struct d40_log_lli_full *lcpa,
                            struct d40_log_lli *lli_dst,
                            struct d40_log_lli *lli_src,
-                           int next)
+                           int next, unsigned int flags)
 {
-        d40_log_lli_link(lli_dst, lli_src, next);
+        d40_log_lli_link(lli_dst, lli_src, next, flags);
 
         writel(lli_src->lcsp02, &lcpa[0].lcsp0);
         writel(lli_src->lcsp13, &lcpa[0].lcsp1);
@@ -361,9 +340,9 @@ void d40_log_lli_lcpa_write(struct d40_log_lli_full *lcpa,
 void d40_log_lli_lcla_write(struct d40_log_lli *lcla,
                            struct d40_log_lli *lli_dst,
                            struct d40_log_lli *lli_src,
-                           int next)
+                           int next, unsigned int flags)
 {
-        d40_log_lli_link(lli_dst, lli_src, next);
+        d40_log_lli_link(lli_dst, lli_src, next, flags);
 
         writel(lli_src->lcsp02, &lcla[0].lcsp02);
         writel(lli_src->lcsp13, &lcla[0].lcsp13);
@@ -375,8 +354,10 @@ static void d40_log_fill_lli(struct d40_log_lli *lli,
                              dma_addr_t data, u32 data_size,
                              u32 reg_cfg,
                              u32 data_width,
-                             bool addr_inc)
+                             unsigned int flags)
 {
+        bool addr_inc = flags & LLI_ADDR_INC;
+
         lli->lcsp13 = reg_cfg;
 
         /* The number of elements to transfer */
@@ -395,67 +376,15 @@ static void d40_log_fill_lli(struct d40_log_lli *lli,
 
 }
 
-int d40_log_sg_to_dev(struct scatterlist *sg,
-                      int sg_len,
-                      struct d40_log_lli_bidir *lli,
-                      struct d40_def_lcsp *lcsp,
-                      u32 src_data_width,
-                      u32 dst_data_width,
-                      enum dma_data_direction direction,
-                      dma_addr_t dev_addr)
-{
-        int total_size = 0;
-        struct scatterlist *current_sg = sg;
-        int i;
-        struct d40_log_lli *lli_src = lli->src;
-        struct d40_log_lli *lli_dst = lli->dst;
-
-        for_each_sg(sg, current_sg, sg_len, i) {
-                total_size += sg_dma_len(current_sg);
-
-                if (direction == DMA_TO_DEVICE) {
-                        lli_src =
-                                d40_log_buf_to_lli(lli_src,
-                                                   sg_phys(current_sg),
-                                                   sg_dma_len(current_sg),
-                                                   lcsp->lcsp1, src_data_width,
-                                                   dst_data_width,
-                                                   true);
-                        lli_dst =
-                                d40_log_buf_to_lli(lli_dst,
-                                                   dev_addr,
-                                                   sg_dma_len(current_sg),
-                                                   lcsp->lcsp3, dst_data_width,
-                                                   src_data_width,
-                                                   false);
-                } else {
-                        lli_dst =
-                                d40_log_buf_to_lli(lli_dst,
-                                                   sg_phys(current_sg),
-                                                   sg_dma_len(current_sg),
-                                                   lcsp->lcsp3, dst_data_width,
-                                                   src_data_width,
-                                                   true);
-                        lli_src =
-                                d40_log_buf_to_lli(lli_src,
-                                                   dev_addr,
-                                                   sg_dma_len(current_sg),
-                                                   lcsp->lcsp1, src_data_width,
-                                                   dst_data_width,
-                                                   false);
-                }
-        }
-        return total_size;
-}
-
-struct d40_log_lli *d40_log_buf_to_lli(struct d40_log_lli *lli_sg,
+static struct d40_log_lli *d40_log_buf_to_lli(struct d40_log_lli *lli_sg,
                                        dma_addr_t addr,
                                        int size,
                                        u32 lcsp13, /* src or dst*/
                                        u32 data_width1,
                                        u32 data_width2,
-                                       bool addr_inc)
+                                       unsigned int flags)
 {
+        bool addr_inc = flags & LLI_ADDR_INC;
         struct d40_log_lli *lli = lli_sg;
         int size_rest = size;
         int size_seg = 0;
@@ -468,7 +397,7 @@ struct d40_log_lli *d40_log_buf_to_lli(struct d40_log_lli *lli_sg,
                                  addr,
                                  size_seg,
                                  lcsp13, data_width1,
-                                 addr_inc);
+                                 flags);
                 if (addr_inc)
                         addr += size_seg;
                 lli++;
@@ -479,6 +408,7 @@ struct d40_log_lli *d40_log_buf_to_lli(struct d40_log_lli *lli_sg,
 
 int d40_log_sg_to_lli(struct scatterlist *sg,
                       int sg_len,
+                      dma_addr_t dev_addr,
                       struct d40_log_lli *lli_sg,
                       u32 lcsp13, /* src or dst*/
                       u32 data_width1, u32 data_width2)
@@ -487,14 +417,24 @@ int d40_log_sg_to_lli(struct scatterlist *sg,
         struct scatterlist *current_sg = sg;
         int i;
         struct d40_log_lli *lli = lli_sg;
+        unsigned long flags = 0;
+
+        if (!dev_addr)
+                flags |= LLI_ADDR_INC;
 
         for_each_sg(sg, current_sg, sg_len, i) {
+                dma_addr_t sg_addr = sg_dma_address(current_sg);
+                unsigned int len = sg_dma_len(current_sg);
+                dma_addr_t addr = dev_addr ?: sg_addr;
+
                 total_size += sg_dma_len(current_sg);
-                lli = d40_log_buf_to_lli(lli,
-                                         sg_phys(current_sg),
-                                         sg_dma_len(current_sg),
+
+                lli = d40_log_buf_to_lli(lli, addr, len,
                                          lcsp13,
-                                         data_width1, data_width2, true);
+                                         data_width1,
+                                         data_width2,
+                                         flags);
         }
+
         return total_size;
 }
diff --git a/drivers/dma/ste_dma40_ll.h b/drivers/dma/ste_dma40_ll.h
index 9cc43495bea2..195ee65ee7f3 100644
--- a/drivers/dma/ste_dma40_ll.h
+++ b/drivers/dma/ste_dma40_ll.h
@@ -163,6 +163,22 @@
 #define D40_DREG_LCEIS1         0x0B4
 #define D40_DREG_LCEIS2         0x0B8
 #define D40_DREG_LCEIS3         0x0BC
+#define D40_DREG_PSEG1          0x110
+#define D40_DREG_PSEG2          0x114
+#define D40_DREG_PSEG3          0x118
+#define D40_DREG_PSEG4          0x11C
+#define D40_DREG_PCEG1          0x120
+#define D40_DREG_PCEG2          0x124
+#define D40_DREG_PCEG3          0x128
+#define D40_DREG_PCEG4          0x12C
+#define D40_DREG_RSEG1          0x130
+#define D40_DREG_RSEG2          0x134
+#define D40_DREG_RSEG3          0x138
+#define D40_DREG_RSEG4          0x13C
+#define D40_DREG_RCEG1          0x140
+#define D40_DREG_RCEG2          0x144
+#define D40_DREG_RCEG3          0x148
+#define D40_DREG_RCEG4          0x14C
 #define D40_DREG_STFU           0xFC8
 #define D40_DREG_ICFG           0xFCC
 #define D40_DREG_PERIPHID0      0xFE0
@@ -277,6 +293,13 @@ struct d40_def_lcsp {
 
 /* Physical channels */
 
+enum d40_lli_flags {
+        LLI_ADDR_INC    = 1 << 0,
+        LLI_TERM_INT    = 1 << 1,
+        LLI_CYCLIC      = 1 << 2,
+        LLI_LAST_LINK   = 1 << 3,
+};
+
 void d40_phy_cfg(struct stedma40_chan_cfg *cfg,
                  u32 *src_cfg,
                  u32 *dst_cfg,
@@ -292,46 +315,15 @@ int d40_phy_sg_to_lli(struct scatterlist *sg,
                       struct d40_phy_lli *lli,
                       dma_addr_t lli_phys,
                       u32 reg_cfg,
-                      u32 data_width1,
-                      u32 data_width2,
-                      int psize);
-
-struct d40_phy_lli *d40_phy_buf_to_lli(struct d40_phy_lli *lli,
-                                       dma_addr_t data,
-                                       u32 data_size,
-                                       int psize,
-                                       dma_addr_t next_lli,
-                                       u32 reg_cfg,
-                                       bool term_int,
-                                       u32 data_width1,
-                                       u32 data_width2,
-                                       bool is_device);
-
-void d40_phy_lli_write(void __iomem *virtbase,
-                       u32 phy_chan_num,
-                       struct d40_phy_lli *lli_dst,
-                       struct d40_phy_lli *lli_src);
+                      struct stedma40_half_channel_info *info,
+                      struct stedma40_half_channel_info *otherinfo,
+                      unsigned long flags);
 
 /* Logical channels */
 
-struct d40_log_lli *d40_log_buf_to_lli(struct d40_log_lli *lli_sg,
-                                       dma_addr_t addr,
-                                       int size,
-                                       u32 lcsp13, /* src or dst*/
-                                       u32 data_width1, u32 data_width2,
-                                       bool addr_inc);
-
-int d40_log_sg_to_dev(struct scatterlist *sg,
-                      int sg_len,
-                      struct d40_log_lli_bidir *lli,
-                      struct d40_def_lcsp *lcsp,
-                      u32 src_data_width,
-                      u32 dst_data_width,
-                      enum dma_data_direction direction,
-                      dma_addr_t dev_addr);
-
 int d40_log_sg_to_lli(struct scatterlist *sg,
                       int sg_len,
+                      dma_addr_t dev_addr,
                       struct d40_log_lli *lli_sg,
                       u32 lcsp13, /* src or dst*/
                       u32 data_width1, u32 data_width2);
@@ -339,11 +331,11 @@ int d40_log_sg_to_lli(struct scatterlist *sg,
 void d40_log_lli_lcpa_write(struct d40_log_lli_full *lcpa,
                             struct d40_log_lli *lli_dst,
                             struct d40_log_lli *lli_src,
-                            int next);
+                            int next, unsigned int flags);
 
 void d40_log_lli_lcla_write(struct d40_log_lli *lcla,
                             struct d40_log_lli *lli_dst,
                             struct d40_log_lli *lli_src,
-                            int next);
+                            int next, unsigned int flags);
 
 #endif /* STE_DMA40_LLI_H */
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 3c56afc5eb1b..b3a25a55ba23 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -145,4 +145,16 @@ config ISCSI_IBFT
           detect iSCSI boot parameters dynamically during system boot, say Y.
           Otherwise, say N.
 
+config SIGMA
+        tristate "SigmaStudio firmware loader"
+        depends on I2C
+        select CRC32
+        default n
+        help
+          Enable helper functions for working with Analog Devices SigmaDSP
+          parts and binary firmwares produced by Analog Devices SigmaStudio.
+
+          If unsure, say N here.  Drivers that need these helpers will select
+          this option automatically.
+
 endmenu
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 20c17fca1232..00bb0b80a79f 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -12,3 +12,4 @@ obj-$(CONFIG_DMIID)		+= dmi-id.o
 obj-$(CONFIG_ISCSI_IBFT_FIND)   += iscsi_ibft_find.o
 obj-$(CONFIG_ISCSI_IBFT)        += iscsi_ibft.o
 obj-$(CONFIG_FIRMWARE_MEMMAP)   += memmap.o
+obj-$(CONFIG_SIGMA)             += sigma.o
diff --git a/drivers/firmware/sigma.c b/drivers/firmware/sigma.c
new file mode 100644
index 000000000000..c19cd2c39fa6
--- /dev/null
+++ b/drivers/firmware/sigma.c
@@ -0,0 +1,115 @@
+/*
+ * Load Analog Devices SigmaStudio firmware files
+ *
+ * Copyright 2009-2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/crc32.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/kernel.h>
+#include <linux/i2c.h>
+#include <linux/sigma.h>
+
+/* Return: 0==OK, <0==error, =1 ==no more actions */
+static int
+process_sigma_action(struct i2c_client *client, struct sigma_firmware *ssfw)
+{
+        struct sigma_action *sa = (void *)(ssfw->fw->data + ssfw->pos);
+        size_t len = sigma_action_len(sa);
+        int ret = 0;
+
+        pr_debug("%s: instr:%i addr:%#x len:%zu\n", __func__,
+                sa->instr, sa->addr, len);
+
+        switch (sa->instr) {
+        case SIGMA_ACTION_WRITEXBYTES:
+        case SIGMA_ACTION_WRITESINGLE:
+        case SIGMA_ACTION_WRITESAFELOAD:
+                if (ssfw->fw->size < ssfw->pos + len)
+                        return -EINVAL;
+                ret = i2c_master_send(client, (void *)&sa->addr, len);
+                if (ret < 0)
+                        return -EINVAL;
+                break;
+
+        case SIGMA_ACTION_DELAY:
+                ret = 0;
+                udelay(len);
+                len = 0;
+                break;
+
+        case SIGMA_ACTION_END:
+                return 1;
+
+        default:
+                return -EINVAL;
+        }
+
+        /* when arrive here ret=0 or sent data */
+        ssfw->pos += sigma_action_size(sa, len);
+        return ssfw->pos == ssfw->fw->size;
+}
+
+static int
+process_sigma_actions(struct i2c_client *client, struct sigma_firmware *ssfw)
+{
+        pr_debug("%s: processing %p\n", __func__, ssfw);
+
+        while (1) {
+                int ret = process_sigma_action(client, ssfw);
+                pr_debug("%s: action returned %i\n", __func__, ret);
+                if (ret == 1)
+                        return 0;
+                else if (ret)
+                        return ret;
+        }
+}
+
+int process_sigma_firmware(struct i2c_client *client, const char *name)
+{
+        int ret;
+        struct sigma_firmware_header *ssfw_head;
+        struct sigma_firmware ssfw;
+        const struct firmware *fw;
+        u32 crc;
+
+        pr_debug("%s: loading firmware %s\n", __func__, name);
+
+        /* first load the blob */
+        ret = request_firmware(&fw, name, &client->dev);
+        if (ret) {
+                pr_debug("%s: request_firmware() failed with %i\n", __func__, ret);
+                return ret;
+        }
+        ssfw.fw = fw;
+
+        /* then verify the header */
+        ret = -EINVAL;
+        if (fw->size < sizeof(*ssfw_head))
+                goto done;
+
+        ssfw_head = (void *)fw->data;
+        if (memcmp(ssfw_head->magic, SIGMA_MAGIC, ARRAY_SIZE(ssfw_head->magic)))
+                goto done;
+
+        crc = crc32(0, fw->data, fw->size);
+        pr_debug("%s: crc=%x\n", __func__, crc);
+        if (crc != ssfw_head->crc)
+                goto done;
+
+        ssfw.pos = sizeof(*ssfw_head);
+
+        /* finally process all of the actions */
+        ret = process_sigma_actions(client, &ssfw);
+
+ done:
+        release_firmware(fw);
+
+        pr_debug("%s: loaded %s\n", __func__, name);
+
+        return ret;
+}
+EXPORT_SYMBOL(process_sigma_firmware);
diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index d3a9c6e02477..00a55dfdba82 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -88,18 +88,20 @@ static const struct backlight_ops nv50_bl_ops = {
         .update_status = nv50_set_intensity,
 };
 
-static int nouveau_nv40_backlight_init(struct drm_device *dev)
+static int nouveau_nv40_backlight_init(struct drm_connector *connector)
 {
-        struct backlight_properties props;
+        struct drm_device *dev = connector->dev;
         struct drm_nouveau_private *dev_priv = dev->dev_private;
+        struct backlight_properties props;
         struct backlight_device *bd;
 
         if (!(nv_rd32(dev, NV40_PMC_BACKLIGHT) & NV40_PMC_BACKLIGHT_MASK))
                 return 0;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = 31;
-        bd = backlight_device_register("nv_backlight", &dev->pdev->dev, dev,
+        bd = backlight_device_register("nv_backlight", &connector->kdev, dev,
                                        &nv40_bl_ops, &props);
         if (IS_ERR(bd))
                 return PTR_ERR(bd);
@@ -111,18 +113,20 @@ static int nouveau_nv40_backlight_init(struct drm_device *dev)
         return 0;
 }
 
-static int nouveau_nv50_backlight_init(struct drm_device *dev)
+static int nouveau_nv50_backlight_init(struct drm_connector *connector)
 {
-        struct backlight_properties props;
+        struct drm_device *dev = connector->dev;
         struct drm_nouveau_private *dev_priv = dev->dev_private;
+        struct backlight_properties props;
         struct backlight_device *bd;
 
         if (!nv_rd32(dev, NV50_PDISPLAY_SOR_BACKLIGHT))
                 return 0;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = 1025;
-        bd = backlight_device_register("nv_backlight", &dev->pdev->dev, dev,
+        bd = backlight_device_register("nv_backlight", &connector->kdev, dev,
                                        &nv50_bl_ops, &props);
         if (IS_ERR(bd))
                 return PTR_ERR(bd);
@@ -133,8 +137,9 @@ static int nouveau_nv50_backlight_init(struct drm_device *dev)
         return 0;
 }
 
-int nouveau_backlight_init(struct drm_device *dev)
+int nouveau_backlight_init(struct drm_connector *connector)
 {
+        struct drm_device *dev = connector->dev;
         struct drm_nouveau_private *dev_priv = dev->dev_private;
 
 #ifdef CONFIG_ACPI
@@ -147,9 +152,9 @@ int nouveau_backlight_init(struct drm_device *dev)
 
         switch (dev_priv->card_type) {
         case NV_40:
-                return nouveau_nv40_backlight_init(dev);
+                return nouveau_nv40_backlight_init(connector);
         case NV_50:
-                return nouveau_nv50_backlight_init(dev);
+                return nouveau_nv50_backlight_init(connector);
         default:
                 break;
         }
@@ -157,8 +162,9 @@ int nouveau_backlight_init(struct drm_device *dev)
         return 0;
 }
 
-void nouveau_backlight_exit(struct drm_device *dev)
+void nouveau_backlight_exit(struct drm_connector *connector)
 {
+        struct drm_device *dev = connector->dev;
         struct drm_nouveau_private *dev_priv = dev->dev_private;
 
         if (dev_priv->backlight) {
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 390d82c3c4b0..7ae151109a66 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -116,6 +116,10 @@ nouveau_connector_destroy(struct drm_connector *connector)
                                       nouveau_connector_hotplug, connector);
         }
 
+        if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS ||
+            connector->connector_type == DRM_MODE_CONNECTOR_eDP)
+                nouveau_backlight_exit(connector);
+
         kfree(nv_connector->edid);
         drm_sysfs_connector_remove(connector);
         drm_connector_cleanup(connector);
@@ -894,6 +898,11 @@ nouveau_connector_create(struct drm_device *dev, int index)
         }
 
         drm_sysfs_connector_add(connector);
+
+        if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS ||
+            connector->connector_type == DRM_MODE_CONNECTOR_eDP)
+                nouveau_backlight_init(connector);
+
         dcb->drm = connector;
         return dcb->drm;
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 06111887b789..fff180a99867 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -999,15 +999,15 @@ static inline int nouveau_acpi_edid(struct drm_device *dev, struct drm_connector
 
 /* nouveau_backlight.c */
 #ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
-extern int nouveau_backlight_init(struct drm_device *);
-extern void nouveau_backlight_exit(struct drm_device *);
+extern int nouveau_backlight_init(struct drm_connector *);
+extern void nouveau_backlight_exit(struct drm_connector *);
 #else
-static inline int nouveau_backlight_init(struct drm_device *dev)
+static inline int nouveau_backlight_init(struct drm_connector *dev)
 {
         return 0;
 }
 
-static inline void nouveau_backlight_exit(struct drm_device *dev) { }
+static inline void nouveau_backlight_exit(struct drm_connector *dev) { }
 #endif
 
 /* nouveau_bios.c */
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index 05294910e135..4fcbd091a117 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -704,10 +704,6 @@ nouveau_card_init(struct drm_device *dev)
                         goto out_fence;
         }
 
-        ret = nouveau_backlight_init(dev);
-        if (ret)
-                NV_ERROR(dev, "Error %d registering backlight\n", ret);
-
         nouveau_fbcon_init(dev);
         drm_kms_helper_poll_init(dev);
         return 0;
@@ -759,8 +755,6 @@ static void nouveau_card_takedown(struct drm_device *dev)
         struct drm_nouveau_private *dev_priv = dev->dev_private;
         struct nouveau_engine *engine = &dev_priv->engine;
 
-        nouveau_backlight_exit(dev);
-
         if (!engine->graph.accel_blocked) {
                 nouveau_fence_fini(dev);
                 nouveau_channel_put_unlocked(&dev_priv->channel);
diff --git a/drivers/gpu/drm/radeon/Kconfig b/drivers/gpu/drm/radeon/Kconfig
index 1c02d23f6fcc..9746fee59f56 100644
--- a/drivers/gpu/drm/radeon/Kconfig
+++ b/drivers/gpu/drm/radeon/Kconfig
@@ -1,6 +1,7 @@
 config DRM_RADEON_KMS
         bool "Enable modesetting on radeon by default - NEW DRIVER"
         depends on DRM_RADEON
+        select BACKLIGHT_CLASS_DEVICE
         help
           Choose this option if you want kernel modesetting enabled by default.
 
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 3f3c9aac46cc..28c7961cd19b 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -40,6 +40,10 @@ radeon_atombios_connected_scratch_regs(struct drm_connector *connector,
                                        struct drm_encoder *encoder,
                                        bool connected);
 
+extern void
+radeon_legacy_backlight_init(struct radeon_encoder *radeon_encoder,
+                             struct drm_connector *drm_connector);
+
 void radeon_connector_hotplug(struct drm_connector *connector)
 {
         struct drm_device *dev = connector->dev;
@@ -1526,6 +1530,17 @@ radeon_add_legacy_connector(struct drm_device *dev,
                 connector->polled = DRM_CONNECTOR_POLL_HPD;
         connector->display_info.subpixel_order = subpixel_order;
         drm_sysfs_connector_add(connector);
+        if (connector_type == DRM_MODE_CONNECTOR_LVDS) {
+                struct drm_encoder *drm_encoder;
+
+                list_for_each_entry(drm_encoder, &dev->mode_config.encoder_list, head) {
+                        struct radeon_encoder *radeon_encoder;
+
+                        radeon_encoder = to_radeon_encoder(drm_encoder);
+                        if (radeon_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_LVDS)
+                                radeon_legacy_backlight_init(radeon_encoder, connector);
+                }
+        }
         return;
 
 failed:
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index 59f834ba283d..5b54268ed6b2 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -28,6 +28,10 @@
 #include "radeon_drm.h"
 #include "radeon.h"
 #include "atom.h"
+#include <linux/backlight.h>
+#ifdef CONFIG_PMAC_BACKLIGHT
+#include <asm/backlight.h>
+#endif
 
 static void radeon_legacy_encoder_disable(struct drm_encoder *encoder)
 {
@@ -39,7 +43,7 @@ static void radeon_legacy_encoder_disable(struct drm_encoder *encoder)
         radeon_encoder->active_device = 0;
 }
 
-static void radeon_legacy_lvds_dpms(struct drm_encoder *encoder, int mode)
+static void radeon_legacy_lvds_update(struct drm_encoder *encoder, int mode)
 {
         struct drm_device *dev = encoder->dev;
         struct radeon_device *rdev = dev->dev_private;
@@ -47,15 +51,23 @@ static void radeon_legacy_lvds_dpms(struct drm_encoder *encoder, int mode)
         uint32_t lvds_gen_cntl, lvds_pll_cntl, pixclks_cntl, disp_pwr_man;
         int panel_pwr_delay = 2000;
         bool is_mac = false;
+        uint8_t backlight_level;
         DRM_DEBUG_KMS("\n");
 
+        lvds_gen_cntl = RREG32(RADEON_LVDS_GEN_CNTL);
+        backlight_level = (lvds_gen_cntl >> RADEON_LVDS_BL_MOD_LEVEL_SHIFT) & 0xff;
+
         if (radeon_encoder->enc_priv) {
                 if (rdev->is_atom_bios) {
                         struct radeon_encoder_atom_dig *lvds = radeon_encoder->enc_priv;
                         panel_pwr_delay = lvds->panel_pwr_delay;
+                        if (lvds->bl_dev)
+                                backlight_level = lvds->backlight_level;
                 } else {
                         struct radeon_encoder_lvds *lvds = radeon_encoder->enc_priv;
                         panel_pwr_delay = lvds->panel_pwr_delay;
+                        if (lvds->bl_dev)
+                                backlight_level = lvds->backlight_level;
                 }
         }
 
@@ -82,11 +94,13 @@ static void radeon_legacy_lvds_dpms(struct drm_encoder *encoder, int mode)
                 lvds_pll_cntl &= ~RADEON_LVDS_PLL_RESET;
                 WREG32(RADEON_LVDS_PLL_CNTL, lvds_pll_cntl);
 
-                lvds_gen_cntl = RREG32(RADEON_LVDS_GEN_CNTL);
-                lvds_gen_cntl |= (RADEON_LVDS_ON | RADEON_LVDS_EN | RADEON_LVDS_DIGON | RADEON_LVDS_BLON);
+                lvds_gen_cntl &= ~(RADEON_LVDS_DISPLAY_DIS |
+                                   RADEON_LVDS_BL_MOD_LEVEL_MASK);
+                lvds_gen_cntl |= (RADEON_LVDS_ON | RADEON_LVDS_EN |
+                                  RADEON_LVDS_DIGON | RADEON_LVDS_BLON |
+                                  (backlight_level << RADEON_LVDS_BL_MOD_LEVEL_SHIFT));
                 if (is_mac)
                         lvds_gen_cntl |= RADEON_LVDS_BL_MOD_EN;
-                lvds_gen_cntl &= ~(RADEON_LVDS_DISPLAY_DIS);
                 udelay(panel_pwr_delay * 1000);
                 WREG32(RADEON_LVDS_GEN_CNTL, lvds_gen_cntl);
                 break;
@@ -95,7 +109,6 @@ static void radeon_legacy_lvds_dpms(struct drm_encoder *encoder, int mode)
         case DRM_MODE_DPMS_OFF:
                 pixclks_cntl = RREG32_PLL(RADEON_PIXCLKS_CNTL);
                 WREG32_PLL_P(RADEON_PIXCLKS_CNTL, 0, ~RADEON_PIXCLK_LVDS_ALWAYS_ONb);
-                lvds_gen_cntl = RREG32(RADEON_LVDS_GEN_CNTL);
                 lvds_gen_cntl |= RADEON_LVDS_DISPLAY_DIS;
                 if (is_mac) {
                         lvds_gen_cntl &= ~RADEON_LVDS_BL_MOD_EN;
@@ -119,6 +132,25 @@ static void radeon_legacy_lvds_dpms(struct drm_encoder *encoder, int mode)
 
 }
 
+static void radeon_legacy_lvds_dpms(struct drm_encoder *encoder, int mode)
+{
+        struct radeon_device *rdev = encoder->dev->dev_private;
+        struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+        DRM_DEBUG("\n");
+
+        if (radeon_encoder->enc_priv) {
+                if (rdev->is_atom_bios) {
+                        struct radeon_encoder_atom_dig *lvds = radeon_encoder->enc_priv;
+                        lvds->dpms_mode = mode;
+                } else {
+                        struct radeon_encoder_lvds *lvds = radeon_encoder->enc_priv;
+                        lvds->dpms_mode = mode;
+                }
+        }
+
+        radeon_legacy_lvds_update(encoder, mode);
+}
+
 static void radeon_legacy_lvds_prepare(struct drm_encoder *encoder)
 {
         struct radeon_device *rdev = encoder->dev->dev_private;
@@ -237,9 +269,222 @@ static const struct drm_encoder_helper_funcs radeon_legacy_lvds_helper_funcs = {
         .disable = radeon_legacy_encoder_disable,
 };
 
+#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
+
+#define MAX_RADEON_LEVEL 0xFF
+
+struct radeon_backlight_privdata {
+        struct radeon_encoder *encoder;
+        uint8_t negative;
+};
+
+static uint8_t radeon_legacy_lvds_level(struct backlight_device *bd)
+{
+        struct radeon_backlight_privdata *pdata = bl_get_data(bd);
+        uint8_t level;
+
+        /* Convert brightness to hardware level */
+        if (bd->props.brightness < 0)
+                level = 0;
+        else if (bd->props.brightness > MAX_RADEON_LEVEL)
+                level = MAX_RADEON_LEVEL;
+        else
+                level = bd->props.brightness;
+
+        if (pdata->negative)
+                level = MAX_RADEON_LEVEL - level;
+
+        return level;
+}
+
+static int radeon_legacy_backlight_update_status(struct backlight_device *bd)
+{
+        struct radeon_backlight_privdata *pdata = bl_get_data(bd);
+        struct radeon_encoder *radeon_encoder = pdata->encoder;
+        struct drm_device *dev = radeon_encoder->base.dev;
+        struct radeon_device *rdev = dev->dev_private;
+        int dpms_mode = DRM_MODE_DPMS_ON;
+
+        if (radeon_encoder->enc_priv) {
+                if (rdev->is_atom_bios) {
+                        struct radeon_encoder_atom_dig *lvds = radeon_encoder->enc_priv;
+                        dpms_mode = lvds->dpms_mode;
+                        lvds->backlight_level = radeon_legacy_lvds_level(bd);
+                } else {
+                        struct radeon_encoder_lvds *lvds = radeon_encoder->enc_priv;
+                        dpms_mode = lvds->dpms_mode;
+                        lvds->backlight_level = radeon_legacy_lvds_level(bd);
+                }
+        }
+
+        if (bd->props.brightness > 0)
+                radeon_legacy_lvds_update(&radeon_encoder->base, dpms_mode);
+        else
+                radeon_legacy_lvds_update(&radeon_encoder->base, DRM_MODE_DPMS_OFF);
+
+        return 0;
+}
+
+static int radeon_legacy_backlight_get_brightness(struct backlight_device *bd)
+{
+        struct radeon_backlight_privdata *pdata = bl_get_data(bd);
+        struct radeon_encoder *radeon_encoder = pdata->encoder;
+        struct drm_device *dev = radeon_encoder->base.dev;
+        struct radeon_device *rdev = dev->dev_private;
+        uint8_t backlight_level;
+
+        backlight_level = (RREG32(RADEON_LVDS_GEN_CNTL) >>
+                           RADEON_LVDS_BL_MOD_LEVEL_SHIFT) & 0xff;
+
+        return pdata->negative ? MAX_RADEON_LEVEL - backlight_level : backlight_level;
+}
+
+static const struct backlight_ops radeon_backlight_ops = {
+        .get_brightness = radeon_legacy_backlight_get_brightness,
+        .update_status  = radeon_legacy_backlight_update_status,
+};
+
+void radeon_legacy_backlight_init(struct radeon_encoder *radeon_encoder,
+                                  struct drm_connector *drm_connector)
+{
+        struct drm_device *dev = radeon_encoder->base.dev;
+        struct radeon_device *rdev = dev->dev_private;
+        struct backlight_device *bd;
+        struct backlight_properties props;
+        struct radeon_backlight_privdata *pdata;
+        uint8_t backlight_level;
+
+        if (!radeon_encoder->enc_priv)
+                return;
+
+#ifdef CONFIG_PMAC_BACKLIGHT
+        if (!pmac_has_backlight_type("ati") &&
+            !pmac_has_backlight_type("mnca"))
+                return;
+#endif
+
+        pdata = kmalloc(sizeof(struct radeon_backlight_privdata), GFP_KERNEL);
+        if (!pdata) {
+                DRM_ERROR("Memory allocation failed\n");
+                goto error;
+        }
+
+        props.max_brightness = MAX_RADEON_LEVEL;
+        props.type = BACKLIGHT_RAW;
+        bd = backlight_device_register("radeon_bl", &drm_connector->kdev,
+                                       pdata, &radeon_backlight_ops, &props);
+        if (IS_ERR(bd)) {
+                DRM_ERROR("Backlight registration failed\n");
+                goto error;
+        }
+
+        pdata->encoder = radeon_encoder;
+
+        backlight_level = (RREG32(RADEON_LVDS_GEN_CNTL) >>
+                           RADEON_LVDS_BL_MOD_LEVEL_SHIFT) & 0xff;
+
+        /* First, try to detect backlight level sense based on the assumption
+         * that firmware set it up at full brightness
+         */
+        if (backlight_level == 0)
+                pdata->negative = true;
+        else if (backlight_level == 0xff)
+                pdata->negative = false;
+        else {
+                /* XXX hack... maybe some day we can figure out in what direction
+                 * backlight should work on a given panel?
+                 */
+                pdata->negative = (rdev->family != CHIP_RV200 &&
+                                   rdev->family != CHIP_RV250 &&
+                                   rdev->family != CHIP_RV280 &&
+                                   rdev->family != CHIP_RV350);
+
+#ifdef CONFIG_PMAC_BACKLIGHT
+                pdata->negative = (pdata->negative ||
+                                   of_machine_is_compatible("PowerBook4,3") ||
+                                   of_machine_is_compatible("PowerBook6,3") ||
+                                   of_machine_is_compatible("PowerBook6,5"));
+#endif
+        }
+
+        if (rdev->is_atom_bios) {
+                struct radeon_encoder_atom_dig *lvds = radeon_encoder->enc_priv;
+                lvds->bl_dev = bd;
+        } else {
+                struct radeon_encoder_lvds *lvds = radeon_encoder->enc_priv;
+                lvds->bl_dev = bd;
+        }
+
+        bd->props.brightness = radeon_legacy_backlight_get_brightness(bd);
+        bd->props.power = FB_BLANK_UNBLANK;
+        backlight_update_status(bd);
+
+        DRM_INFO("radeon legacy LVDS backlight initialized\n");
+
+        return;
+
+error:
+        kfree(pdata);
+        return;
+}
+
+static void radeon_legacy_backlight_exit(struct radeon_encoder *radeon_encoder)
+{
+        struct drm_device *dev = radeon_encoder->base.dev;
+        struct radeon_device *rdev = dev->dev_private;
+        struct backlight_device *bd = NULL;
+
+        if (!radeon_encoder->enc_priv)
+                return;
+
+        if (rdev->is_atom_bios) {
+                struct radeon_encoder_atom_dig *lvds = radeon_encoder->enc_priv;
+                bd = lvds->bl_dev;
+                lvds->bl_dev = NULL;
+        } else {
+                struct radeon_encoder_lvds *lvds = radeon_encoder->enc_priv;
+                bd = lvds->bl_dev;
+                lvds->bl_dev = NULL;
+        }
+
+        if (bd) {
+                struct radeon_legacy_backlight_privdata *pdata;
+
+                pdata = bl_get_data(bd);
+                backlight_device_unregister(bd);
+                kfree(pdata);
+
+                DRM_INFO("radeon legacy LVDS backlight unloaded\n");
+        }
+}
+
+#else /* !CONFIG_BACKLIGHT_CLASS_DEVICE */
+
+void radeon_legacy_backlight_init(struct radeon_encoder *encoder)
+{
+}
+
+static void radeon_legacy_backlight_exit(struct radeon_encoder *encoder)
+{
+}
+
+#endif
+
+
+static void radeon_lvds_enc_destroy(struct drm_encoder *encoder)
+{
+        struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+
+        if (radeon_encoder->enc_priv) {
+                radeon_legacy_backlight_exit(radeon_encoder);
+                kfree(radeon_encoder->enc_priv);
+        }
+        drm_encoder_cleanup(encoder);
+        kfree(radeon_encoder);
+}
 
 static const struct drm_encoder_funcs radeon_legacy_lvds_enc_funcs = {
-        .destroy = radeon_enc_destroy,
+        .destroy = radeon_lvds_enc_destroy,
 };
 
 static void radeon_legacy_primary_dac_dpms(struct drm_encoder *encoder, int mode)
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 5067d18d0009..e4582814bb78 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -302,6 +302,9 @@ struct radeon_encoder_lvds {
         uint32_t lvds_gen_cntl;
         /* panel mode */
         struct drm_display_mode native_mode;
+        struct backlight_device *bl_dev;
+        int      dpms_mode;
+        uint8_t  backlight_level;
 };
 
 struct radeon_encoder_tv_dac {
@@ -355,6 +358,9 @@ struct radeon_encoder_atom_dig {
         uint32_t lcd_ss_id;
         /* panel mode */
         struct drm_display_mode native_mode;
+        struct backlight_device *bl_dev;
+        int dpms_mode;
+        uint8_t backlight_level;
 };
 
 struct radeon_encoder_atom_dac {
diff --git a/drivers/hid/hid-picolcd.c b/drivers/hid/hid-picolcd.c
index de9cf21b3494..657da5a3d5c6 100644
--- a/drivers/hid/hid-picolcd.c
+++ b/drivers/hid/hid-picolcd.c
@@ -944,6 +944,7 @@ static int picolcd_init_backlight(struct picolcd_data *data, struct hid_report *
         }
 
         memset(&props, 0, sizeof(props));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = 0xff;
         bdev = backlight_device_register(dev_name(dev), dev, data,
                         &picolcd_blops, &props);
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index ad415e6ec5a1..326652f673f7 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -547,15 +547,18 @@ config I2C_PUV3
 
 config I2C_PXA
         tristate "Intel PXA2XX I2C adapter"
-        depends on ARCH_PXA || ARCH_MMP
+        depends on ARCH_PXA || ARCH_MMP || (X86_32 && PCI && OF)
         help
           If you have devices in the PXA I2C bus, say yes to this option.
           This driver can also be built as a module.  If so, the module
           will be called i2c-pxa.
 
+config I2C_PXA_PCI
+        def_bool I2C_PXA && X86_32 && PCI && OF
+
 config I2C_PXA_SLAVE
         bool "Intel PXA2XX I2C Slave comms support"
-        depends on I2C_PXA
+        depends on I2C_PXA && !X86_32
         help
           Support I2C slave mode communications on the PXA I2C bus.  This
           is necessary for systems where the PXA may be a target on the
@@ -668,15 +671,28 @@ config I2C_XILINX
           will be called xilinx_i2c.
 
 config I2C_EG20T
-        tristate "PCH I2C of Intel EG20T"
-        depends on PCI
-        help
-          This driver is for PCH(Platform controller Hub) I2C of EG20T which
-          is an IOH(Input/Output Hub) for x86 embedded processor.
-          This driver can access PCH I2C bus device.
+        tristate "Intel EG20T PCH/OKI SEMICONDUCTOR ML7213 IOH"
+        depends on PCI
+        help
+          This driver is for PCH(Platform controller Hub) I2C of EG20T which
+          is an IOH(Input/Output Hub) for x86 embedded processor.
+          This driver can access PCH I2C bus device.
+
+          This driver also supports the ML7213, a companion chip for the
+          Atom E6xx series and compatible with the Intel EG20T PCH.
 
 comment "External I2C/SMBus adapter drivers"
 
+config I2C_DIOLAN_U2C
+        tristate "Diolan U2C-12 USB adapter"
+        depends on USB
+        help
+          If you say yes to this option, support will be included for Diolan
+          U2C-12, a USB to I2C interface.
+
+          This driver can also be built as a module.  If so, the module
+          will be called i2c-diolan-u2c.
+
 config I2C_PARPORT
         tristate "Parallel port adapter"
         depends on PARPORT
diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
index 3878c959d4fa..e6cf294d3729 100644
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -54,6 +54,7 @@ obj-$(CONFIG_I2C_PMCMSP)	+= i2c-pmcmsp.o
 obj-$(CONFIG_I2C_PNX)           += i2c-pnx.o
 obj-$(CONFIG_I2C_PUV3)          += i2c-puv3.o
 obj-$(CONFIG_I2C_PXA)           += i2c-pxa.o
+obj-$(CONFIG_I2C_PXA_PCI)       += i2c-pxa-pci.o
 obj-$(CONFIG_I2C_S3C2410)       += i2c-s3c2410.o
 obj-$(CONFIG_I2C_S6000)         += i2c-s6000.o
 obj-$(CONFIG_I2C_SH7760)        += i2c-sh7760.o
@@ -67,6 +68,7 @@ obj-$(CONFIG_I2C_XILINX)	+= i2c-xiic.o
 obj-$(CONFIG_I2C_EG20T)         += i2c-eg20t.o
 
 # External I2C/SMBus adapter drivers
+obj-$(CONFIG_I2C_DIOLAN_U2C)    += i2c-diolan-u2c.o
 obj-$(CONFIG_I2C_PARPORT)       += i2c-parport.o
 obj-$(CONFIG_I2C_PARPORT_LIGHT) += i2c-parport-light.o
 obj-$(CONFIG_I2C_TAOS_EVM)      += i2c-taos-evm.o
diff --git a/drivers/i2c/busses/i2c-diolan-u2c.c b/drivers/i2c/busses/i2c-diolan-u2c.c
new file mode 100644
index 000000000000..76366716a854
--- /dev/null
+++ b/drivers/i2c/busses/i2c-diolan-u2c.c
@@ -0,0 +1,535 @@
+/*
+ * Driver for the Diolan u2c-12 USB-I2C adapter
+ *
+ * Copyright (c) 2010-2011 Ericsson AB
+ *
+ * Derived from:
+ *  i2c-tiny-usb.c
+ *  Copyright (C) 2006-2007 Till Harbaum (Till@Harbaum.org)
+ *
+ * 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, version 2.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+#include <linux/i2c.h>
+
+#define DRIVER_NAME             "i2c-diolan-u2c"
+
+#define USB_VENDOR_ID_DIOLAN            0x0abf
+#define USB_DEVICE_ID_DIOLAN_U2C        0x3370
+
+#define DIOLAN_OUT_EP           0x02
+#define DIOLAN_IN_EP            0x84
+
+/* commands via USB, must match command ids in the firmware */
+#define CMD_I2C_READ            0x01
+#define CMD_I2C_WRITE           0x02
+#define CMD_I2C_SCAN            0x03    /* Returns list of detected devices */
+#define CMD_I2C_RELEASE_SDA     0x04
+#define CMD_I2C_RELEASE_SCL     0x05
+#define CMD_I2C_DROP_SDA        0x06
+#define CMD_I2C_DROP_SCL        0x07
+#define CMD_I2C_READ_SDA        0x08
+#define CMD_I2C_READ_SCL        0x09
+#define CMD_GET_FW_VERSION      0x0a
+#define CMD_GET_SERIAL          0x0b
+#define CMD_I2C_START           0x0c
+#define CMD_I2C_STOP            0x0d
+#define CMD_I2C_REPEATED_START  0x0e
+#define CMD_I2C_PUT_BYTE        0x0f
+#define CMD_I2C_GET_BYTE        0x10
+#define CMD_I2C_PUT_ACK         0x11
+#define CMD_I2C_GET_ACK         0x12
+#define CMD_I2C_PUT_BYTE_ACK    0x13
+#define CMD_I2C_GET_BYTE_ACK    0x14
+#define CMD_I2C_SET_SPEED       0x1b
+#define CMD_I2C_GET_SPEED       0x1c
+#define CMD_I2C_SET_CLK_SYNC    0x24
+#define CMD_I2C_GET_CLK_SYNC    0x25
+#define CMD_I2C_SET_CLK_SYNC_TO 0x26
+#define CMD_I2C_GET_CLK_SYNC_TO 0x27
+
+#define RESP_OK                 0x00
+#define RESP_FAILED             0x01
+#define RESP_BAD_MEMADDR        0x04
+#define RESP_DATA_ERR           0x05
+#define RESP_NOT_IMPLEMENTED    0x06
+#define RESP_NACK               0x07
+#define RESP_TIMEOUT            0x09
+
+#define U2C_I2C_SPEED_FAST      0       /* 400 kHz */
+#define U2C_I2C_SPEED_STD       1       /* 100 kHz */
+#define U2C_I2C_SPEED_2KHZ      242     /* 2 kHz, minimum speed */
+#define U2C_I2C_SPEED(f)        ((DIV_ROUND_UP(1000000, (f)) - 10) / 2 + 1)
+
+#define U2C_I2C_FREQ_FAST       400000
+#define U2C_I2C_FREQ_STD        100000
+#define U2C_I2C_FREQ(s)         (1000000 / (2 * (s - 1) + 10))
+
+#define DIOLAN_USB_TIMEOUT      100     /* in ms */
+#define DIOLAN_SYNC_TIMEOUT     20      /* in ms */
+
+#define DIOLAN_OUTBUF_LEN       128
+#define DIOLAN_FLUSH_LEN        (DIOLAN_OUTBUF_LEN - 4)
+#define DIOLAN_INBUF_LEN        256     /* Maximum supported receive length */
+
+/* Structure to hold all of our device specific stuff */
+struct i2c_diolan_u2c {
+        u8 obuffer[DIOLAN_OUTBUF_LEN];  /* output buffer */
+        u8 ibuffer[DIOLAN_INBUF_LEN];   /* input buffer */
+        struct usb_device *usb_dev;     /* the usb device for this device */
+        struct usb_interface *interface;/* the interface for this device */
+        struct i2c_adapter adapter;     /* i2c related things */
+        int olen;                       /* Output buffer length */
+        int ocount;                     /* Number of enqueued messages */
+};
+
+static uint frequency = U2C_I2C_FREQ_STD;       /* I2C clock frequency in Hz */
+
+module_param(frequency, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(frequency, "I2C clock frequency in hertz");
+
+/* usb layer */
+
+/* Send command to device, and get response. */
+static int diolan_usb_transfer(struct i2c_diolan_u2c *dev)
+{
+        int ret = 0;
+        int actual;
+        int i;
+
+        if (!dev->olen || !dev->ocount)
+                return -EINVAL;
+
+        ret = usb_bulk_msg(dev->usb_dev,
+                           usb_sndbulkpipe(dev->usb_dev, DIOLAN_OUT_EP),
+                           dev->obuffer, dev->olen, &actual,
+                           DIOLAN_USB_TIMEOUT);
+        if (!ret) {
+                for (i = 0; i < dev->ocount; i++) {
+                        int tmpret;
+
+                        tmpret = usb_bulk_msg(dev->usb_dev,
+                                              usb_rcvbulkpipe(dev->usb_dev,
+                                                              DIOLAN_IN_EP),
+                                              dev->ibuffer,
+                                              sizeof(dev->ibuffer), &actual,
+                                              DIOLAN_USB_TIMEOUT);
+                        /*
+                         * Stop command processing if a previous command
+                         * returned an error.
+                         * Note that we still need to retrieve all messages.
+                         */
+                        if (ret < 0)
+                                continue;
+                        ret = tmpret;
+                        if (ret == 0 && actual > 0) {
+                                switch (dev->ibuffer[actual - 1]) {
+                                case RESP_NACK:
+                                        /*
+                                         * Return ENXIO if NACK was received as
+                                         * response to the address phase,
+                                         * EIO otherwise
+                                         */
+                                        ret = i == 1 ? -ENXIO : -EIO;
+                                        break;
+                                case RESP_TIMEOUT:
+                                        ret = -ETIMEDOUT;
+                                        break;
+                                case RESP_OK:
+                                        /* strip off return code */
+                                        ret = actual - 1;
+                                        break;
+                                default:
+                                        ret = -EIO;
+                                        break;
+                                }
+                        }
+                }
+        }
+        dev->olen = 0;
+        dev->ocount = 0;
+        return ret;
+}
+
+static int diolan_write_cmd(struct i2c_diolan_u2c *dev, bool flush)
+{
+        if (flush || dev->olen >= DIOLAN_FLUSH_LEN)
+                return diolan_usb_transfer(dev);
+        return 0;
+}
+
+/* Send command (no data) */
+static int diolan_usb_cmd(struct i2c_diolan_u2c *dev, u8 command, bool flush)
+{
+        dev->obuffer[dev->olen++] = command;
+        dev->ocount++;
+        return diolan_write_cmd(dev, flush);
+}
+
+/* Send command with one byte of data */
+static int diolan_usb_cmd_data(struct i2c_diolan_u2c *dev, u8 command, u8 data,
+                               bool flush)
+{
+        dev->obuffer[dev->olen++] = command;
+        dev->obuffer[dev->olen++] = data;
+        dev->ocount++;
+        return diolan_write_cmd(dev, flush);
+}
+
+/* Send command with two bytes of data */
+static int diolan_usb_cmd_data2(struct i2c_diolan_u2c *dev, u8 command, u8 d1,
+                                u8 d2, bool flush)
+{
+        dev->obuffer[dev->olen++] = command;
+        dev->obuffer[dev->olen++] = d1;
+        dev->obuffer[dev->olen++] = d2;
+        dev->ocount++;
+        return diolan_write_cmd(dev, flush);
+}
+
+/*
+ * Flush input queue.
+ * If we don't do this at startup and the controller has queued up
+ * messages which were not retrieved, it will stop responding
+ * at some point.
+ */
+static void diolan_flush_input(struct i2c_diolan_u2c *dev)
+{
+        int i;
+
+        for (i = 0; i < 10; i++) {
+                int actual = 0;
+                int ret;
+
+                ret = usb_bulk_msg(dev->usb_dev,
+                                   usb_rcvbulkpipe(dev->usb_dev, DIOLAN_IN_EP),
+                                   dev->ibuffer, sizeof(dev->ibuffer), &actual,
+                                   DIOLAN_USB_TIMEOUT);
+                if (ret < 0 || actual == 0)
+                        break;
+        }
+        if (i == 10)
+                dev_err(&dev->interface->dev, "Failed to flush input buffer\n");
+}
+
+static int diolan_i2c_start(struct i2c_diolan_u2c *dev)
+{
+        return diolan_usb_cmd(dev, CMD_I2C_START, false);
+}
+
+static int diolan_i2c_repeated_start(struct i2c_diolan_u2c *dev)
+{
+        return diolan_usb_cmd(dev, CMD_I2C_REPEATED_START, false);
+}
+
+static int diolan_i2c_stop(struct i2c_diolan_u2c *dev)
+{
+        return diolan_usb_cmd(dev, CMD_I2C_STOP, true);
+}
+
+static int diolan_i2c_get_byte_ack(struct i2c_diolan_u2c *dev, bool ack,
+                                   u8 *byte)
+{
+        int ret;
+
+        ret = diolan_usb_cmd_data(dev, CMD_I2C_GET_BYTE_ACK, ack, true);
+        if (ret > 0)
+                *byte = dev->ibuffer[0];
+        else if (ret == 0)
+                ret = -EIO;
+
+        return ret;
+}
+
+static int diolan_i2c_put_byte_ack(struct i2c_diolan_u2c *dev, u8 byte)
+{
+        return diolan_usb_cmd_data(dev, CMD_I2C_PUT_BYTE_ACK, byte, false);
+}
+
+static int diolan_set_speed(struct i2c_diolan_u2c *dev, u8 speed)
+{
+        return diolan_usb_cmd_data(dev, CMD_I2C_SET_SPEED, speed, true);
+}
+
+/* Enable or disable clock synchronization (stretching) */
+static int diolan_set_clock_synch(struct i2c_diolan_u2c *dev, bool enable)
+{
+        return diolan_usb_cmd_data(dev, CMD_I2C_SET_CLK_SYNC, enable, true);
+}
+
+/* Set clock synchronization timeout in ms */
+static int diolan_set_clock_synch_timeout(struct i2c_diolan_u2c *dev, int ms)
+{
+        int to_val = ms * 10;
+
+        return diolan_usb_cmd_data2(dev, CMD_I2C_SET_CLK_SYNC_TO,
+                                    to_val & 0xff, (to_val >> 8) & 0xff, true);
+}
+
+static void diolan_fw_version(struct i2c_diolan_u2c *dev)
+{
+        int ret;
+
+        ret = diolan_usb_cmd(dev, CMD_GET_FW_VERSION, true);
+        if (ret >= 2)
+                dev_info(&dev->interface->dev,
+                         "Diolan U2C firmware version %u.%u\n",
+                         (unsigned int)dev->ibuffer[0],
+                         (unsigned int)dev->ibuffer[1]);
+}
+
+static void diolan_get_serial(struct i2c_diolan_u2c *dev)
+{
+        int ret;
+        u32 serial;
+
+        ret = diolan_usb_cmd(dev, CMD_GET_SERIAL, true);
+        if (ret >= 4) {
+                serial = le32_to_cpu(*(u32 *)dev->ibuffer);
+                dev_info(&dev->interface->dev,
+                         "Diolan U2C serial number %u\n", serial);
+        }
+}
+
+static int diolan_init(struct i2c_diolan_u2c *dev)
+{
+        int speed, ret;
+
+        if (frequency >= 200000) {
+                speed = U2C_I2C_SPEED_FAST;
+                frequency = U2C_I2C_FREQ_FAST;
+        } else if (frequency >= 100000 || frequency == 0) {
+                speed = U2C_I2C_SPEED_STD;
+                frequency = U2C_I2C_FREQ_STD;
+        } else {
+                speed = U2C_I2C_SPEED(frequency);
+                if (speed > U2C_I2C_SPEED_2KHZ)
+                        speed = U2C_I2C_SPEED_2KHZ;
+                frequency = U2C_I2C_FREQ(speed);
+        }
+
+        dev_info(&dev->interface->dev,
+                 "Diolan U2C at USB bus %03d address %03d speed %d Hz\n",
+                 dev->usb_dev->bus->busnum, dev->usb_dev->devnum, frequency);
+
+        diolan_flush_input(dev);
+        diolan_fw_version(dev);
+        diolan_get_serial(dev);
+
+        /* Set I2C speed */
+        ret = diolan_set_speed(dev, speed);
+        if (ret < 0)
+                return ret;
+
+        /* Configure I2C clock synchronization */
+        ret = diolan_set_clock_synch(dev, speed != U2C_I2C_SPEED_FAST);
+        if (ret < 0)
+                return ret;
+
+        if (speed != U2C_I2C_SPEED_FAST)
+                ret = diolan_set_clock_synch_timeout(dev, DIOLAN_SYNC_TIMEOUT);
+
+        return ret;
+}
+
+/* i2c layer */
+
+static int diolan_usb_xfer(struct i2c_adapter *adapter, struct i2c_msg *msgs,
+                           int num)
+{
+        struct i2c_diolan_u2c *dev = i2c_get_adapdata(adapter);
+        struct i2c_msg *pmsg;
+        int i, j;
+        int ret, sret;
+
+        ret = diolan_i2c_start(dev);
+        if (ret < 0)
+                return ret;
+
+        for (i = 0; i < num; i++) {
+                pmsg = &msgs[i];
+                if (i) {
+                        ret = diolan_i2c_repeated_start(dev);
+                        if (ret < 0)
+                                goto abort;
+                }
+                if (pmsg->flags & I2C_M_RD) {
+                        ret =
+                            diolan_i2c_put_byte_ack(dev, (pmsg->addr << 1) | 1);
+                        if (ret < 0)
+                                goto abort;
+                        for (j = 0; j < pmsg->len; j++) {
+                                u8 byte;
+                                bool ack = j < pmsg->len - 1;
+
+                                /*
+                                 * Don't send NACK if this is the first byte
+                                 * of a SMBUS_BLOCK message.
+                                 */
+                                if (j == 0 && (pmsg->flags & I2C_M_RECV_LEN))
+                                        ack = true;
+
+                                ret = diolan_i2c_get_byte_ack(dev, ack, &byte);
+                                if (ret < 0)
+                                        goto abort;
+                                /*
+                                 * Adjust count if first received byte is length
+                                 */
+                                if (j == 0 && (pmsg->flags & I2C_M_RECV_LEN)) {
+                                        if (byte == 0
+                                            || byte > I2C_SMBUS_BLOCK_MAX) {
+                                                ret = -EPROTO;
+                                                goto abort;
+                                        }
+                                        pmsg->len += byte;
+                                }
+                                pmsg->buf[j] = byte;
+                        }
+                } else {
+                        ret = diolan_i2c_put_byte_ack(dev, pmsg->addr << 1);
+                        if (ret < 0)
+                                goto abort;
+                        for (j = 0; j < pmsg->len; j++) {
+                                ret = diolan_i2c_put_byte_ack(dev,
+                                                              pmsg->buf[j]);
+                                if (ret < 0)
+                                        goto abort;
+                        }
+                }
+        }
+abort:
+        sret = diolan_i2c_stop(dev);
+        if (sret < 0 && ret >= 0)
+                ret = sret;
+        return ret;
+}
+
+/*
+ * Return list of supported functionality.
+ */
+static u32 diolan_usb_func(struct i2c_adapter *a)
+{
+        return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL |
+               I2C_FUNC_SMBUS_READ_BLOCK_DATA | I2C_FUNC_SMBUS_BLOCK_PROC_CALL;
+}
+
+static const struct i2c_algorithm diolan_usb_algorithm = {
+        .master_xfer = diolan_usb_xfer,
+        .functionality = diolan_usb_func,
+};
+
+/* device layer */
+
+static const struct usb_device_id diolan_u2c_table[] = {
+        { USB_DEVICE(USB_VENDOR_ID_DIOLAN, USB_DEVICE_ID_DIOLAN_U2C) },
+        { }
+};
+
+MODULE_DEVICE_TABLE(usb, diolan_u2c_table);
+
+static void diolan_u2c_free(struct i2c_diolan_u2c *dev)
+{
+        usb_put_dev(dev->usb_dev);
+        kfree(dev);
+}
+
+static int diolan_u2c_probe(struct usb_interface *interface,
+                            const struct usb_device_id *id)
+{
+        struct i2c_diolan_u2c *dev;
+        int ret;
+
+        /* allocate memory for our device state and initialize it */
+        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+        if (dev == NULL) {
+                dev_err(&interface->dev, "no memory for device state\n");
+                ret = -ENOMEM;
+                goto error;
+        }
+
+        dev->usb_dev = usb_get_dev(interface_to_usbdev(interface));
+        dev->interface = interface;
+
+        /* save our data pointer in this interface device */
+        usb_set_intfdata(interface, dev);
+
+        /* setup i2c adapter description */
+        dev->adapter.owner = THIS_MODULE;
+        dev->adapter.class = I2C_CLASS_HWMON;
+        dev->adapter.algo = &diolan_usb_algorithm;
+        i2c_set_adapdata(&dev->adapter, dev);
+        snprintf(dev->adapter.name, sizeof(dev->adapter.name),
+                 DRIVER_NAME " at bus %03d device %03d",
+                 dev->usb_dev->bus->busnum, dev->usb_dev->devnum);
+
+        dev->adapter.dev.parent = &dev->interface->dev;
+
+        /* initialize diolan i2c interface */
+        ret = diolan_init(dev);
+        if (ret < 0) {
+                dev_err(&interface->dev, "failed to initialize adapter\n");
+                goto error_free;
+        }
+
+        /* and finally attach to i2c layer */
+        ret = i2c_add_adapter(&dev->adapter);
+        if (ret < 0) {
+                dev_err(&interface->dev, "failed to add I2C adapter\n");
+                goto error_free;
+        }
+
+        dev_dbg(&interface->dev, "connected " DRIVER_NAME "\n");
+
+        return 0;
+
+error_free:
+        usb_set_intfdata(interface, NULL);
+        diolan_u2c_free(dev);
+error:
+        return ret;
+}
+
+static void diolan_u2c_disconnect(struct usb_interface *interface)
+{
+        struct i2c_diolan_u2c *dev = usb_get_intfdata(interface);
+
+        i2c_del_adapter(&dev->adapter);
+        usb_set_intfdata(interface, NULL);
+        diolan_u2c_free(dev);
+
+        dev_dbg(&interface->dev, "disconnected\n");
+}
+
+static struct usb_driver diolan_u2c_driver = {
+        .name = DRIVER_NAME,
+        .probe = diolan_u2c_probe,
+        .disconnect = diolan_u2c_disconnect,
+        .id_table = diolan_u2c_table,
+};
+
+static int __init diolan_u2c_init(void)
+{
+        /* register this driver with the USB subsystem */
+        return usb_register(&diolan_u2c_driver);
+}
+
+static void __exit diolan_u2c_exit(void)
+{
+        /* deregister this driver with the USB subsystem */
+        usb_deregister(&diolan_u2c_driver);
+}
+
+module_init(diolan_u2c_init);
+module_exit(diolan_u2c_exit);
+
+MODULE_AUTHOR("Guenter Roeck <guenter.roeck@ericsson.com>");
+MODULE_DESCRIPTION(DRIVER_NAME " driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c
index 50ea1f43bdc1..878a12026af2 100644
--- a/drivers/i2c/busses/i2c-eg20t.c
+++ b/drivers/i2c/busses/i2c-eg20t.c
@@ -132,6 +132,13 @@
 #define pch_pci_dbg(pdev, fmt, arg...)  \
         dev_dbg(&pdev->dev, "%s :" fmt, __func__, ##arg)
 
+/*
+Set the number of I2C instance max
+Intel EG20T PCH :               1ch
+OKI SEMICONDUCTOR ML7213 IOH :  2ch
+*/
+#define PCH_I2C_MAX_DEV                 2
+
 /**
  * struct i2c_algo_pch_data - for I2C driver functionalities
  * @pch_adapter:                stores the reference to i2c_adapter structure
@@ -156,12 +163,14 @@ struct i2c_algo_pch_data {
  * @pch_data:           stores a list of i2c_algo_pch_data
  * @pch_i2c_suspended:  specifies whether the system is suspended or not
  *                      perhaps with more lines and words.
+ * @ch_num:             specifies the number of i2c instance
  *
  * pch_data has as many elements as maximum I2C channels
  */
 struct adapter_info {
-        struct i2c_algo_pch_data pch_data;
+        struct i2c_algo_pch_data pch_data[PCH_I2C_MAX_DEV];
         bool pch_i2c_suspended;
+        int ch_num;
 };
 
 
@@ -170,8 +179,13 @@ static int pch_clk = 50000;	/* specifies I2C clock speed in KHz */
 static wait_queue_head_t pch_event;
 static DEFINE_MUTEX(pch_mutex);
 
+/* Definition for ML7213 by OKI SEMICONDUCTOR */
+#define PCI_VENDOR_ID_ROHM              0x10DB
+#define PCI_DEVICE_ID_ML7213_I2C        0x802D
+
 static struct pci_device_id __devinitdata pch_pcidev_id[] = {
-        {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_PCH_I2C)},
+        { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_PCH_I2C),   1, },
+        { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ML7213_I2C), 2, },
         {0,}
 };
 
@@ -212,8 +226,7 @@ static void pch_i2c_init(struct i2c_algo_pch_data *adap)
         /* Initialize I2C registers */
         iowrite32(0x21, p + PCH_I2CNF);
 
-        pch_setbit(adap->pch_base_address, PCH_I2CCTL,
-                          PCH_I2CCTL_I2CMEN);
+        pch_setbit(adap->pch_base_address, PCH_I2CCTL, PCH_I2CCTL_I2CMEN);
 
         if (pch_i2c_speed != 400)
                 pch_i2c_speed = 100;
@@ -255,7 +268,7 @@ static inline bool ktime_lt(const ktime_t cmp1, const ktime_t cmp2)
  * @timeout:    waiting time counter (us).
  */
 static s32 pch_i2c_wait_for_bus_idle(struct i2c_algo_pch_data *adap,
-                                 s32 timeout)
+                                     s32 timeout)
 {
         void __iomem *p = adap->pch_base_address;
 
@@ -475,8 +488,8 @@ static void pch_i2c_sendnack(struct i2c_algo_pch_data *adap)
  * @last:       specifies whether last message or not.
  * @first:      specifies whether first message or not.
  */
-s32 pch_i2c_readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
-                  u32 last, u32 first)
+static s32 pch_i2c_readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
+                             u32 last, u32 first)
 {
         struct i2c_algo_pch_data *adap = i2c_adap->algo_data;
 
@@ -569,10 +582,10 @@ s32 pch_i2c_readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
 }
 
 /**
- * pch_i2c_cb_ch0() - Interrupt handler Call back function
+ * pch_i2c_cb() - Interrupt handler Call back function
  * @adap:       Pointer to struct i2c_algo_pch_data.
  */
-static void pch_i2c_cb_ch0(struct i2c_algo_pch_data *adap)
+static void pch_i2c_cb(struct i2c_algo_pch_data *adap)
 {
         u32 sts;
         void __iomem *p = adap->pch_base_address;
@@ -600,24 +613,30 @@ static void pch_i2c_cb_ch0(struct i2c_algo_pch_data *adap)
  */
 static irqreturn_t pch_i2c_handler(int irq, void *pData)
 {
-        s32 reg_val;
-
-        struct i2c_algo_pch_data *adap_data = (struct i2c_algo_pch_data *)pData;
-        void __iomem *p = adap_data->pch_base_address;
-        u32 mode = ioread32(p + PCH_I2CMOD) & (BUFFER_MODE | EEPROM_SR_MODE);
-
-        if (mode != NORMAL_MODE) {
-                pch_err(adap_data, "I2C mode is not supported\n");
-                return IRQ_NONE;
+        u32 reg_val;
+        int flag;
+        int i;
+        struct adapter_info *adap_info = pData;
+        void __iomem *p;
+        u32 mode;
+
+        for (i = 0, flag = 0; i < adap_info->ch_num; i++) {
+                p = adap_info->pch_data[i].pch_base_address;
+                mode = ioread32(p + PCH_I2CMOD);
+                mode &= BUFFER_MODE | EEPROM_SR_MODE;
+                if (mode != NORMAL_MODE) {
+                        pch_err(adap_info->pch_data,
+                                "I2C-%d mode(%d) is not supported\n", mode, i);
+                        continue;
+                }
+                reg_val = ioread32(p + PCH_I2CSR);
+                if (reg_val & (I2CMAL_BIT | I2CMCF_BIT | I2CMIF_BIT)) {
+                        pch_i2c_cb(&adap_info->pch_data[i]);
+                        flag = 1;
+                }
         }
 
-        reg_val = ioread32(p + PCH_I2CSR);
-        if (reg_val & (I2CMAL_BIT | I2CMCF_BIT | I2CMIF_BIT))
-                pch_i2c_cb_ch0(adap_data);
-        else
-                return IRQ_NONE;
-
-        return IRQ_HANDLED;
+        return flag ? IRQ_HANDLED : IRQ_NONE;
 }
 
 /**
@@ -627,7 +646,7 @@ static irqreturn_t pch_i2c_handler(int irq, void *pData)
  * @num:        number of messages.
  */
 static s32 pch_i2c_xfer(struct i2c_adapter *i2c_adap,
-                    struct i2c_msg *msgs, s32 num)
+                        struct i2c_msg *msgs, s32 num)
 {
         struct i2c_msg *pmsg;
         u32 i = 0;
@@ -710,11 +729,13 @@ static void pch_i2c_disbl_int(struct i2c_algo_pch_data *adap)
 }
 
 static int __devinit pch_i2c_probe(struct pci_dev *pdev,
-                               const struct pci_device_id *id)
+                                   const struct pci_device_id *id)
 {
         void __iomem *base_addr;
-        s32 ret;
+        int ret;
+        int i, j;
         struct adapter_info *adap_info;
+        struct i2c_adapter *pch_adap;
 
         pch_pci_dbg(pdev, "Entered.\n");
 
@@ -744,44 +765,48 @@ static int __devinit pch_i2c_probe(struct pci_dev *pdev,
                 goto err_pci_iomap;
         }
 
-        adap_info->pch_i2c_suspended = false;
+        /* Set the number of I2C channel instance */
+        adap_info->ch_num = id->driver_data;
 
-        adap_info->pch_data.p_adapter_info = adap_info;
+        for (i = 0; i < adap_info->ch_num; i++) {
+                pch_adap = &adap_info->pch_data[i].pch_adapter;
+                adap_info->pch_i2c_suspended = false;
 
-        adap_info->pch_data.pch_adapter.owner = THIS_MODULE;
-        adap_info->pch_data.pch_adapter.class = I2C_CLASS_HWMON;
-        strcpy(adap_info->pch_data.pch_adapter.name, KBUILD_MODNAME);
-        adap_info->pch_data.pch_adapter.algo = &pch_algorithm;
-        adap_info->pch_data.pch_adapter.algo_data =
-                                                &adap_info->pch_data;
+                adap_info->pch_data[i].p_adapter_info = adap_info;
 
-        /* (i * 0x80) + base_addr; */
-        adap_info->pch_data.pch_base_address = base_addr;
+                pch_adap->owner = THIS_MODULE;
+                pch_adap->class = I2C_CLASS_HWMON;
+                strcpy(pch_adap->name, KBUILD_MODNAME);
+                pch_adap->algo = &pch_algorithm;
+                pch_adap->algo_data = &adap_info->pch_data[i];
 
-        adap_info->pch_data.pch_adapter.dev.parent = &pdev->dev;
+                /* base_addr + offset; */
+                adap_info->pch_data[i].pch_base_address = base_addr + 0x100 * i;
 
-        ret = i2c_add_adapter(&(adap_info->pch_data.pch_adapter));
+                pch_adap->dev.parent = &pdev->dev;
 
-        if (ret) {
-                pch_pci_err(pdev, "i2c_add_adapter FAILED\n");
-                goto err_i2c_add_adapter;
-        }
+                ret = i2c_add_adapter(pch_adap);
+                if (ret) {
+                        pch_pci_err(pdev, "i2c_add_adapter[ch:%d] FAILED\n", i);
+                        goto err_i2c_add_adapter;
+                }
 
-        pch_i2c_init(&adap_info->pch_data);
+                pch_i2c_init(&adap_info->pch_data[i]);
+        }
         ret = request_irq(pdev->irq, pch_i2c_handler, IRQF_SHARED,
-                  KBUILD_MODNAME, &adap_info->pch_data);
+                  KBUILD_MODNAME, adap_info);
         if (ret) {
                 pch_pci_err(pdev, "request_irq FAILED\n");
-                goto err_request_irq;
+                goto err_i2c_add_adapter;
         }
 
         pci_set_drvdata(pdev, adap_info);
         pch_pci_dbg(pdev, "returns %d.\n", ret);
         return 0;
 
-err_request_irq:
-        i2c_del_adapter(&(adap_info->pch_data.pch_adapter));
 err_i2c_add_adapter:
+        for (j = 0; j < i; j++)
+                i2c_del_adapter(&adap_info->pch_data[j].pch_adapter);
         pci_iounmap(pdev, base_addr);
 err_pci_iomap:
         pci_release_regions(pdev);
@@ -794,17 +819,22 @@ err_pci_enable:
 
 static void __devexit pch_i2c_remove(struct pci_dev *pdev)
 {
+        int i;
         struct adapter_info *adap_info = pci_get_drvdata(pdev);
 
-        pch_i2c_disbl_int(&adap_info->pch_data);
-        free_irq(pdev->irq, &adap_info->pch_data);
-        i2c_del_adapter(&(adap_info->pch_data.pch_adapter));
+        free_irq(pdev->irq, adap_info);
 
-        if (adap_info->pch_data.pch_base_address) {
-                pci_iounmap(pdev, adap_info->pch_data.pch_base_address);
-                adap_info->pch_data.pch_base_address = 0;
+        for (i = 0; i < adap_info->ch_num; i++) {
+                pch_i2c_disbl_int(&adap_info->pch_data[i]);
+                i2c_del_adapter(&adap_info->pch_data[i].pch_adapter);
         }
 
+        if (adap_info->pch_data[0].pch_base_address)
+                pci_iounmap(pdev, adap_info->pch_data[0].pch_base_address);
+
+        for (i = 0; i < adap_info->ch_num; i++)
+                adap_info->pch_data[i].pch_base_address = 0;
+
         pci_set_drvdata(pdev, NULL);
 
         pci_release_regions(pdev);
@@ -817,17 +847,22 @@ static void __devexit pch_i2c_remove(struct pci_dev *pdev)
 static int pch_i2c_suspend(struct pci_dev *pdev, pm_message_t state)
 {
         int ret;
+        int i;
         struct adapter_info *adap_info = pci_get_drvdata(pdev);
-        void __iomem *p = adap_info->pch_data.pch_base_address;
+        void __iomem *p = adap_info->pch_data[0].pch_base_address;
 
         adap_info->pch_i2c_suspended = true;
 
-        while ((adap_info->pch_data.pch_i2c_xfer_in_progress)) {
-                /* Wait until all channel transfers are completed */
-                msleep(20);
+        for (i = 0; i < adap_info->ch_num; i++) {
+                while ((adap_info->pch_data[i].pch_i2c_xfer_in_progress)) {
+                        /* Wait until all channel transfers are completed */
+                        msleep(20);
+                }
         }
+
         /* Disable the i2c interrupts */
-        pch_i2c_disbl_int(&adap_info->pch_data);
+        for (i = 0; i < adap_info->ch_num; i++)
+                pch_i2c_disbl_int(&adap_info->pch_data[i]);
 
         pch_pci_dbg(pdev, "I2CSR = %x I2CBUFSTA = %x I2CESRSTA = %x "
                 "invoked function pch_i2c_disbl_int successfully\n",
@@ -850,6 +885,7 @@ static int pch_i2c_suspend(struct pci_dev *pdev, pm_message_t state)
 
 static int pch_i2c_resume(struct pci_dev *pdev)
 {
+        int i;
         struct adapter_info *adap_info = pci_get_drvdata(pdev);
 
         pci_set_power_state(pdev, PCI_D0);
@@ -862,7 +898,8 @@ static int pch_i2c_resume(struct pci_dev *pdev)
 
         pci_enable_wake(pdev, PCI_D3hot, 0);
 
-        pch_i2c_init(&adap_info->pch_data);
+        for (i = 0; i < adap_info->ch_num; i++)
+                pch_i2c_init(&adap_info->pch_data[i]);
 
         adap_info->pch_i2c_suspended = false;
 
@@ -894,7 +931,7 @@ static void __exit pch_pci_exit(void)
 }
 module_exit(pch_pci_exit);
 
-MODULE_DESCRIPTION("PCH I2C PCI Driver");
+MODULE_DESCRIPTION("Intel EG20T PCH/OKI SEMICONDUCTOR ML7213 IOH I2C Driver");
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Tomoya MORINAGA. <tomoya-linux@dsn.okisemi.com>");
 module_param(pch_i2c_speed, int, (S_IRUSR | S_IWUSR));
diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c
index 8022e2390a5a..caf96dc8ca1b 100644
--- a/drivers/i2c/busses/i2c-mxs.c
+++ b/drivers/i2c/busses/i2c-mxs.c
@@ -118,6 +118,8 @@ static void mxs_i2c_reset(struct mxs_i2c_dev *i2c)
 {
         mxs_reset_block(i2c->regs);
         writel(MXS_I2C_IRQ_MASK << 8, i2c->regs + MXS_I2C_CTRL1_SET);
+        writel(MXS_I2C_QUEUECTRL_PIO_QUEUE_MODE,
+                        i2c->regs + MXS_I2C_QUEUECTRL_SET);
 }
 
 static void mxs_i2c_pioq_setup_read(struct mxs_i2c_dev *i2c, u8 addr, int len,
@@ -347,8 +349,6 @@ static int __devinit mxs_i2c_probe(struct platform_device *pdev)
 
         /* Do reset to enforce correct startup after pinmuxing */
         mxs_i2c_reset(i2c);
-        writel(MXS_I2C_QUEUECTRL_PIO_QUEUE_MODE,
-                        i2c->regs + MXS_I2C_QUEUECTRL_SET);
 
         adap = &i2c->adapter;
         strlcpy(adap->name, "MXS I2C adapter", sizeof(adap->name));
diff --git a/drivers/i2c/busses/i2c-pxa-pci.c b/drivers/i2c/busses/i2c-pxa-pci.c
new file mode 100644
index 000000000000..6659d269b841
--- /dev/null
+++ b/drivers/i2c/busses/i2c-pxa-pci.c
@@ -0,0 +1,176 @@
+/*
+ * The CE4100's I2C device is more or less the same one as found on PXA.
+ * It does not support slave mode, the register slightly moved. This PCI
+ * device provides three bars, every contains a single I2C controller.
+ */
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/i2c/pxa-i2c.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+
+#define CE4100_PCI_I2C_DEVS     3
+
+struct ce4100_devices {
+        struct platform_device *pdev[CE4100_PCI_I2C_DEVS];
+};
+
+static struct platform_device *add_i2c_device(struct pci_dev *dev, int bar)
+{
+        struct platform_device *pdev;
+        struct i2c_pxa_platform_data pdata;
+        struct resource res[2];
+        struct device_node *child;
+        static int devnum;
+        int ret;
+
+        memset(&pdata, 0, sizeof(struct i2c_pxa_platform_data));
+        memset(&res, 0, sizeof(res));
+
+        res[0].flags = IORESOURCE_MEM;
+        res[0].start = pci_resource_start(dev, bar);
+        res[0].end = pci_resource_end(dev, bar);
+
+        res[1].flags = IORESOURCE_IRQ;
+        res[1].start = dev->irq;
+        res[1].end = dev->irq;
+
+        for_each_child_of_node(dev->dev.of_node, child) {
+                const void *prop;
+                struct resource r;
+                int ret;
+
+                ret = of_address_to_resource(child, 0, &r);
+                if (ret < 0)
+                        continue;
+                if (r.start != res[0].start)
+                        continue;
+                if (r.end != res[0].end)
+                        continue;
+                if (r.flags != res[0].flags)
+                        continue;
+
+                prop = of_get_property(child, "fast-mode", NULL);
+                if (prop)
+                        pdata.fast_mode = 1;
+
+                break;
+        }
+
+        if (!child) {
+                dev_err(&dev->dev, "failed to match a DT node for bar %d.\n",
+                                bar);
+                ret = -EINVAL;
+                goto out;
+        }
+
+        pdev = platform_device_alloc("ce4100-i2c", devnum);
+        if (!pdev) {
+                of_node_put(child);
+                ret = -ENOMEM;
+                goto out;
+        }
+        pdev->dev.parent = &dev->dev;
+        pdev->dev.of_node = child;
+
+        ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
+        if (ret)
+                goto err;
+
+        ret = platform_device_add_data(pdev, &pdata, sizeof(pdata));
+        if (ret)
+                goto err;
+
+        ret = platform_device_add(pdev);
+        if (ret)
+                goto err;
+        devnum++;
+        return pdev;
+err:
+        platform_device_put(pdev);
+out:
+        return ERR_PTR(ret);
+}
+
+static int __devinit ce4100_i2c_probe(struct pci_dev *dev,
+                const struct pci_device_id *ent)
+{
+        int ret;
+        int i;
+        struct ce4100_devices *sds;
+
+        ret = pci_enable_device_mem(dev);
+        if (ret)
+                return ret;
+
+        if (!dev->dev.of_node) {
+                dev_err(&dev->dev, "Missing device tree node.\n");
+                return -EINVAL;
+        }
+        sds = kzalloc(sizeof(*sds), GFP_KERNEL);
+        if (!sds)
+                goto err_mem;
+
+        for (i = 0; i < ARRAY_SIZE(sds->pdev); i++) {
+                sds->pdev[i] = add_i2c_device(dev, i);
+                if (IS_ERR(sds->pdev[i])) {
+                        while (--i >= 0)
+                                platform_device_unregister(sds->pdev[i]);
+                        goto err_dev_add;
+                }
+        }
+        pci_set_drvdata(dev, sds);
+        return 0;
+
+err_dev_add:
+        pci_set_drvdata(dev, NULL);
+        kfree(sds);
+err_mem:
+        pci_disable_device(dev);
+        return ret;
+}
+
+static void __devexit ce4100_i2c_remove(struct pci_dev *dev)
+{
+        struct ce4100_devices *sds;
+        unsigned int i;
+
+        sds = pci_get_drvdata(dev);
+        pci_set_drvdata(dev, NULL);
+
+        for (i = 0; i < ARRAY_SIZE(sds->pdev); i++)
+                platform_device_unregister(sds->pdev[i]);
+
+        pci_disable_device(dev);
+        kfree(sds);
+}
+
+static struct pci_device_id ce4100_i2c_devices[] __devinitdata = {
+        { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2e68)},
+        { },
+};
+MODULE_DEVICE_TABLE(pci, ce4100_i2c_devices);
+
+static struct pci_driver ce4100_i2c_driver = {
+        .name           = "ce4100_i2c",
+        .id_table       = ce4100_i2c_devices,
+        .probe          = ce4100_i2c_probe,
+        .remove         = __devexit_p(ce4100_i2c_remove),
+};
+
+static int __init ce4100_i2c_init(void)
+{
+        return pci_register_driver(&ce4100_i2c_driver);
+}
+module_init(ce4100_i2c_init);
+
+static void __exit ce4100_i2c_exit(void)
+{
+        pci_unregister_driver(&ce4100_i2c_driver);
+}
+module_exit(ce4100_i2c_exit);
+
+MODULE_DESCRIPTION("CE4100 PCI-I2C glue code for PXA's driver");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Sebastian Andrzej Siewior <bigeasy@linutronix.de>");
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index f4c19a97e0b3..f59224a5c761 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -29,38 +29,75 @@
 #include <linux/errno.h>
 #include <linux/interrupt.h>
 #include <linux/i2c-pxa.h>
+#include <linux/of_i2c.h>
 #include <linux/platform_device.h>
 #include <linux/err.h>
 #include <linux/clk.h>
 #include <linux/slab.h>
 #include <linux/io.h>
+#include <linux/i2c/pxa-i2c.h>
 
 #include <asm/irq.h>
-#include <plat/i2c.h>
+
+#ifndef CONFIG_HAVE_CLK
+#define clk_get(dev, id)        NULL
+#define clk_put(clk)            do { } while (0)
+#define clk_disable(clk)        do { } while (0)
+#define clk_enable(clk)         do { } while (0)
+#endif
+
+struct pxa_reg_layout {
+        u32 ibmr;
+        u32 idbr;
+        u32 icr;
+        u32 isr;
+        u32 isar;
+};
+
+enum pxa_i2c_types {
+        REGS_PXA2XX,
+        REGS_PXA3XX,
+        REGS_CE4100,
+};
 
 /*
- * I2C register offsets will be shifted 0 or 1 bit left, depending on
- * different SoCs
+ * I2C registers definitions
  */
-#define REG_SHIFT_0     (0 << 0)
-#define REG_SHIFT_1     (1 << 0)
-#define REG_SHIFT(d)    ((d) & 0x1)
+static struct pxa_reg_layout pxa_reg_layout[] = {
+        [REGS_PXA2XX] = {
+                .ibmr = 0x00,
+                .idbr = 0x08,
+                .icr =  0x10,
+                .isr =  0x18,
+                .isar = 0x20,
+        },
+        [REGS_PXA3XX] = {
+                .ibmr = 0x00,
+                .idbr = 0x04,
+                .icr =  0x08,
+                .isr =  0x0c,
+                .isar = 0x10,
+        },
+        [REGS_CE4100] = {
+                .ibmr = 0x14,
+                .idbr = 0x0c,
+                .icr =  0x00,
+                .isr =  0x04,
+                /* no isar register */
+        },
+};
 
 static const struct platform_device_id i2c_pxa_id_table[] = {
-        { "pxa2xx-i2c",         REG_SHIFT_1 },
-        { "pxa3xx-pwri2c",      REG_SHIFT_0 },
+        { "pxa2xx-i2c",         REGS_PXA2XX },
+        { "pxa3xx-pwri2c",      REGS_PXA3XX },
+        { "ce4100-i2c",         REGS_CE4100 },
         { },
 };
 MODULE_DEVICE_TABLE(platform, i2c_pxa_id_table);
 
 /*
- * I2C registers and bit definitions
+ * I2C bit definitions
  */
-#define IBMR            (0x00)
-#define IDBR            (0x08)
-#define ICR             (0x10)
-#define ISR             (0x18)
-#define ISAR            (0x20)
 
 #define ICR_START       (1 << 0)           /* start bit */
 #define ICR_STOP        (1 << 1)           /* stop bit */
@@ -111,7 +148,11 @@ struct pxa_i2c {
         u32                     icrlog[32];
 
         void __iomem            *reg_base;
-        unsigned int            reg_shift;
+        void __iomem            *reg_ibmr;
+        void __iomem            *reg_idbr;
+        void __iomem            *reg_icr;
+        void __iomem            *reg_isr;
+        void __iomem            *reg_isar;
 
         unsigned long           iobase;
         unsigned long           iosize;
@@ -121,11 +162,11 @@ struct pxa_i2c {
         unsigned int            fast_mode :1;
 };
 
-#define _IBMR(i2c)      ((i2c)->reg_base + (0x0 << (i2c)->reg_shift))
-#define _IDBR(i2c)      ((i2c)->reg_base + (0x4 << (i2c)->reg_shift))
-#define _ICR(i2c)       ((i2c)->reg_base + (0x8 << (i2c)->reg_shift))
-#define _ISR(i2c)       ((i2c)->reg_base + (0xc << (i2c)->reg_shift))
-#define _ISAR(i2c)      ((i2c)->reg_base + (0x10 << (i2c)->reg_shift))
+#define _IBMR(i2c)      ((i2c)->reg_ibmr)
+#define _IDBR(i2c)      ((i2c)->reg_idbr)
+#define _ICR(i2c)       ((i2c)->reg_icr)
+#define _ISR(i2c)       ((i2c)->reg_isr)
+#define _ISAR(i2c)      ((i2c)->reg_isar)
 
 /*
  * I2C Slave mode address
@@ -418,7 +459,8 @@ static void i2c_pxa_reset(struct pxa_i2c *i2c)
         writel(I2C_ISR_INIT, _ISR(i2c));
         writel(readl(_ICR(i2c)) & ~ICR_UR, _ICR(i2c));
 
-        writel(i2c->slave_addr, _ISAR(i2c));
+        if (i2c->reg_isar)
+                writel(i2c->slave_addr, _ISAR(i2c));
 
         /* set control register values */
         writel(I2C_ICR_INIT | (i2c->fast_mode ? ICR_FM : 0), _ICR(i2c));
@@ -729,8 +771,10 @@ static int i2c_pxa_do_xfer(struct pxa_i2c *i2c, struct i2c_msg *msg, int num)
          */
         ret = i2c->msg_idx;
 
-        if (timeout == 0)
+        if (!timeout && i2c->msg_num) {
                 i2c_pxa_scream_blue_murder(i2c, "timeout");
+                ret = I2C_RETRY;
+        }
 
  out:
         return ret;
@@ -915,11 +959,16 @@ static void i2c_pxa_irq_rxfull(struct pxa_i2c *i2c, u32 isr)
         writel(icr, _ICR(i2c));
 }
 
+#define VALID_INT_SOURCE        (ISR_SSD | ISR_ALD | ISR_ITE | ISR_IRF | \
+                                ISR_SAD | ISR_BED)
 static irqreturn_t i2c_pxa_handler(int this_irq, void *dev_id)
 {
         struct pxa_i2c *i2c = dev_id;
         u32 isr = readl(_ISR(i2c));
 
+        if (!(isr & VALID_INT_SOURCE))
+                return IRQ_NONE;
+
         if (i2c_debug > 2 && 0) {
                 dev_dbg(&i2c->adap.dev, "%s: ISR=%08x, ICR=%08x, IBMR=%02x\n",
                         __func__, isr, readl(_ICR(i2c)), readl(_IBMR(i2c)));
@@ -934,7 +983,7 @@ static irqreturn_t i2c_pxa_handler(int this_irq, void *dev_id)
         /*
          * Always clear all pending IRQs.
          */
-        writel(isr & (ISR_SSD|ISR_ALD|ISR_ITE|ISR_IRF|ISR_SAD|ISR_BED), _ISR(i2c));
+        writel(isr & VALID_INT_SOURCE, _ISR(i2c));
 
         if (isr & ISR_SAD)
                 i2c_pxa_slave_start(i2c, isr);
@@ -1001,6 +1050,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
         struct resource *res;
         struct i2c_pxa_platform_data *plat = dev->dev.platform_data;
         const struct platform_device_id *id = platform_get_device_id(dev);
+        enum pxa_i2c_types i2c_type = id->driver_data;
         int ret;
         int irq;
 
@@ -1044,7 +1094,13 @@ static int i2c_pxa_probe(struct platform_device *dev)
                 ret = -EIO;
                 goto eremap;
         }
-        i2c->reg_shift = REG_SHIFT(id->driver_data);
+
+        i2c->reg_ibmr = i2c->reg_base + pxa_reg_layout[i2c_type].ibmr;
+        i2c->reg_idbr = i2c->reg_base + pxa_reg_layout[i2c_type].idbr;
+        i2c->reg_icr = i2c->reg_base + pxa_reg_layout[i2c_type].icr;
+        i2c->reg_isr = i2c->reg_base + pxa_reg_layout[i2c_type].isr;
+        if (i2c_type != REGS_CE4100)
+                i2c->reg_isar = i2c->reg_base + pxa_reg_layout[i2c_type].isar;
 
         i2c->iobase = res->start;
         i2c->iosize = resource_size(res);
@@ -1072,7 +1128,7 @@ static int i2c_pxa_probe(struct platform_device *dev)
                 i2c->adap.algo = &i2c_pxa_pio_algorithm;
         } else {
                 i2c->adap.algo = &i2c_pxa_algorithm;
-                ret = request_irq(irq, i2c_pxa_handler, IRQF_DISABLED,
+                ret = request_irq(irq, i2c_pxa_handler, IRQF_SHARED,
                                   i2c->adap.name, i2c);
                 if (ret)
                         goto ereqirq;
@@ -1082,12 +1138,19 @@ static int i2c_pxa_probe(struct platform_device *dev)
 
         i2c->adap.algo_data = i2c;
         i2c->adap.dev.parent = &dev->dev;
+#ifdef CONFIG_OF
+        i2c->adap.dev.of_node = dev->dev.of_node;
+#endif
 
-        ret = i2c_add_numbered_adapter(&i2c->adap);
+        if (i2c_type == REGS_CE4100)
+                ret = i2c_add_adapter(&i2c->adap);
+        else
+                ret = i2c_add_numbered_adapter(&i2c->adap);
         if (ret < 0) {
                 printk(KERN_INFO "I2C: Failed to add bus\n");
                 goto eadapt;
         }
+        of_i2c_register_devices(&i2c->adap);
 
         platform_set_drvdata(dev, i2c);
 
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 6f190f4cdbc0..9bec8699b8a3 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -34,6 +34,16 @@ config LEDS_ATMEL_PWM
           This option enables support for LEDs driven using outputs
           of the dedicated PWM controller found on newer Atmel SOCs.
 
+config LEDS_LM3530
+        tristate "LCD Backlight driver for LM3530"
+        depends on LEDS_CLASS
+        depends on I2C
+        help
+          This option enables support for the LCD backlight using
+          LM3530 ambient light sensor chip. This ALS chip can be
+          controlled manually or using PWM input or using ambient
+          light automatically.
+
 config LEDS_LOCOMO
         tristate "LED Support for Locomo device"
         depends on LEDS_CLASS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index aae6989ff6b6..39c80fca84d2 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_LEDS_88PM860X)		+= leds-88pm860x.o
 obj-$(CONFIG_LEDS_ATMEL_PWM)            += leds-atmel-pwm.o
 obj-$(CONFIG_LEDS_BD2802)               += leds-bd2802.o
 obj-$(CONFIG_LEDS_LOCOMO)               += leds-locomo.o
+obj-$(CONFIG_LEDS_LM3530)               += leds-lm3530.o
 obj-$(CONFIG_LEDS_MIKROTIK_RB532)       += leds-rb532.o
 obj-$(CONFIG_LEDS_S3C24XX)              += leds-s3c24xx.o
 obj-$(CONFIG_LEDS_AMS_DELTA)            += leds-ams-delta.o
diff --git a/drivers/leds/leds-bd2802.c b/drivers/leds/leds-bd2802.c
index 19dc4b61a105..3ebe3824662d 100644
--- a/drivers/leds/leds-bd2802.c
+++ b/drivers/leds/leds-bd2802.c
@@ -19,7 +19,7 @@
 #include <linux/leds.h>
 #include <linux/leds-bd2802.h>
 #include <linux/slab.h>
-
+#include <linux/pm.h>
 
 #define LED_CTL(rgb2en, rgb1en) ((rgb2en) << 4 | ((rgb1en) << 0))
 
@@ -319,20 +319,6 @@ static void bd2802_turn_off(struct bd2802_led *led, enum led_ids id,
         bd2802_update_state(led, id, color, BD2802_OFF);
 }
 
-static void bd2802_restore_state(struct bd2802_led *led)
-{
-        int i;
-
-        for (i = 0; i < LED_NUM; i++) {
-                if (led->led[i].r)
-                        bd2802_turn_on(led, i, RED, led->led[i].r);
-                if (led->led[i].g)
-                        bd2802_turn_on(led, i, GREEN, led->led[i].g);
-                if (led->led[i].b)
-                        bd2802_turn_on(led, i, BLUE, led->led[i].b);
-        }
-}
-
 #define BD2802_SET_REGISTER(reg_addr, reg_name)                         \
 static ssize_t bd2802_store_reg##reg_addr(struct device *dev,           \
         struct device_attribute *attr, const char *buf, size_t count)   \
@@ -761,8 +747,25 @@ static int __exit bd2802_remove(struct i2c_client *client)
         return 0;
 }
 
-static int bd2802_suspend(struct i2c_client *client, pm_message_t mesg)
+#ifdef CONFIG_PM
+
+static void bd2802_restore_state(struct bd2802_led *led)
 {
+        int i;
+
+        for (i = 0; i < LED_NUM; i++) {
+                if (led->led[i].r)
+                        bd2802_turn_on(led, i, RED, led->led[i].r);
+                if (led->led[i].g)
+                        bd2802_turn_on(led, i, GREEN, led->led[i].g);
+                if (led->led[i].b)
+                        bd2802_turn_on(led, i, BLUE, led->led[i].b);
+        }
+}
+
+static int bd2802_suspend(struct device *dev)
+{
+        struct i2c_client *client = to_i2c_client(dev);
         struct bd2802_led *led = i2c_get_clientdata(client);
 
         gpio_set_value(led->pdata->reset_gpio, 0);
@@ -770,8 +773,9 @@ static int bd2802_suspend(struct i2c_client *client, pm_message_t mesg)
         return 0;
 }
 
-static int bd2802_resume(struct i2c_client *client)
+static int bd2802_resume(struct device *dev)
 {
+        struct i2c_client *client = to_i2c_client(dev);
         struct bd2802_led *led = i2c_get_clientdata(client);
 
         if (!bd2802_is_all_off(led) || led->adf_on) {
@@ -782,6 +786,12 @@ static int bd2802_resume(struct i2c_client *client)
         return 0;
 }
 
+static SIMPLE_DEV_PM_OPS(bd2802_pm, bd2802_suspend, bd2802_resume);
+#define BD2802_PM (&bd2802_pm)
+#else           /* CONFIG_PM */
+#define BD2802_PM NULL
+#endif
+
 static const struct i2c_device_id bd2802_id[] = {
         { "BD2802", 0 },
         { }
@@ -791,11 +801,10 @@ MODULE_DEVICE_TABLE(i2c, bd2802_id);
 static struct i2c_driver bd2802_i2c_driver = {
         .driver = {
                 .name   = "BD2802",
+                .pm     = BD2802_PM,
         },
         .probe          = bd2802_probe,
         .remove         = __exit_p(bd2802_remove),
-        .suspend        = bd2802_suspend,
-        .resume         = bd2802_resume,
         .id_table       = bd2802_id,
 };
 
diff --git a/drivers/leds/leds-lm3530.c b/drivers/leds/leds-lm3530.c
new file mode 100644
index 000000000000..e7089a1f6cb6
--- /dev/null
+++ b/drivers/leds/leds-lm3530.c
@@ -0,0 +1,378 @@
+/*
+ * Copyright (C) 2011 ST-Ericsson SA.
+ * Copyright (C) 2009 Motorola, Inc.
+ *
+ * License Terms: GNU General Public License v2
+ *
+ * Simple driver for National Semiconductor LM3530 Backlight driver chip
+ *
+ * Author: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>
+ * based on leds-lm3530.c by Dan Murphy <D.Murphy@motorola.com>
+ */
+
+#include <linux/i2c.h>
+#include <linux/leds.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/led-lm3530.h>
+#include <linux/types.h>
+
+#define LM3530_LED_DEV "lcd-backlight"
+#define LM3530_NAME "lm3530-led"
+
+#define LM3530_GEN_CONFIG               0x10
+#define LM3530_ALS_CONFIG               0x20
+#define LM3530_BRT_RAMP_RATE            0x30
+#define LM3530_ALS_ZONE_REG             0x40
+#define LM3530_ALS_IMP_SELECT           0x41
+#define LM3530_BRT_CTRL_REG             0xA0
+#define LM3530_ALS_ZB0_REG              0x60
+#define LM3530_ALS_ZB1_REG              0x61
+#define LM3530_ALS_ZB2_REG              0x62
+#define LM3530_ALS_ZB3_REG              0x63
+#define LM3530_ALS_Z0T_REG              0x70
+#define LM3530_ALS_Z1T_REG              0x71
+#define LM3530_ALS_Z2T_REG              0x72
+#define LM3530_ALS_Z3T_REG              0x73
+#define LM3530_ALS_Z4T_REG              0x74
+#define LM3530_REG_MAX                  15
+
+/* General Control Register */
+#define LM3530_EN_I2C_SHIFT             (0)
+#define LM3530_RAMP_LAW_SHIFT           (1)
+#define LM3530_MAX_CURR_SHIFT           (2)
+#define LM3530_EN_PWM_SHIFT             (5)
+#define LM3530_PWM_POL_SHIFT            (6)
+#define LM3530_EN_PWM_SIMPLE_SHIFT      (7)
+
+#define LM3530_ENABLE_I2C               (1 << LM3530_EN_I2C_SHIFT)
+#define LM3530_ENABLE_PWM               (1 << LM3530_EN_PWM_SHIFT)
+#define LM3530_POL_LOW                  (1 << LM3530_PWM_POL_SHIFT)
+#define LM3530_ENABLE_PWM_SIMPLE        (1 << LM3530_EN_PWM_SIMPLE_SHIFT)
+
+/* ALS Config Register Options */
+#define LM3530_ALS_AVG_TIME_SHIFT       (0)
+#define LM3530_EN_ALS_SHIFT             (3)
+#define LM3530_ALS_SEL_SHIFT            (5)
+
+#define LM3530_ENABLE_ALS               (3 << LM3530_EN_ALS_SHIFT)
+
+/* Brightness Ramp Rate Register */
+#define LM3530_BRT_RAMP_FALL_SHIFT      (0)
+#define LM3530_BRT_RAMP_RISE_SHIFT      (3)
+
+/* ALS Resistor Select */
+#define LM3530_ALS1_IMP_SHIFT           (0)
+#define LM3530_ALS2_IMP_SHIFT           (4)
+
+/* Zone Boundary Register defaults */
+#define LM3530_DEF_ZB_0                 (0x33)
+#define LM3530_DEF_ZB_1                 (0x66)
+#define LM3530_DEF_ZB_2                 (0x99)
+#define LM3530_DEF_ZB_3                 (0xCC)
+
+/* Zone Target Register defaults */
+#define LM3530_DEF_ZT_0                 (0x19)
+#define LM3530_DEF_ZT_1                 (0x33)
+#define LM3530_DEF_ZT_2                 (0x4C)
+#define LM3530_DEF_ZT_3                 (0x66)
+#define LM3530_DEF_ZT_4                 (0x7F)
+
+struct lm3530_mode_map {
+        const char *mode;
+        enum lm3530_mode mode_val;
+};
+
+static struct lm3530_mode_map mode_map[] = {
+        { "man", LM3530_BL_MODE_MANUAL },
+        { "als", LM3530_BL_MODE_ALS },
+        { "pwm", LM3530_BL_MODE_PWM },
+};
+
+/**
+ * struct lm3530_data
+ * @led_dev: led class device
+ * @client: i2c client
+ * @pdata: LM3530 platform data
+ * @mode: mode of operation - manual, ALS, PWM
+ */
+struct lm3530_data {
+        struct led_classdev led_dev;
+        struct i2c_client *client;
+        struct lm3530_platform_data *pdata;
+        enum lm3530_mode mode;
+};
+
+static const u8 lm3530_reg[LM3530_REG_MAX] = {
+        LM3530_GEN_CONFIG,
+        LM3530_ALS_CONFIG,
+        LM3530_BRT_RAMP_RATE,
+        LM3530_ALS_ZONE_REG,
+        LM3530_ALS_IMP_SELECT,
+        LM3530_BRT_CTRL_REG,
+        LM3530_ALS_ZB0_REG,
+        LM3530_ALS_ZB1_REG,
+        LM3530_ALS_ZB2_REG,
+        LM3530_ALS_ZB3_REG,
+        LM3530_ALS_Z0T_REG,
+        LM3530_ALS_Z1T_REG,
+        LM3530_ALS_Z2T_REG,
+        LM3530_ALS_Z3T_REG,
+        LM3530_ALS_Z4T_REG,
+};
+
+static int lm3530_get_mode_from_str(const char *str)
+{
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(mode_map); i++)
+                if (sysfs_streq(str, mode_map[i].mode))
+                        return mode_map[i].mode_val;
+
+        return -1;
+}
+
+static int lm3530_init_registers(struct lm3530_data *drvdata)
+{
+        int ret = 0;
+        int i;
+        u8 gen_config;
+        u8 als_config = 0;
+        u8 brt_ramp;
+        u8 als_imp_sel = 0;
+        u8 brightness;
+        u8 reg_val[LM3530_REG_MAX];
+        struct lm3530_platform_data *pltfm = drvdata->pdata;
+        struct i2c_client *client = drvdata->client;
+
+        gen_config = (pltfm->brt_ramp_law << LM3530_RAMP_LAW_SHIFT) |
+                        ((pltfm->max_current & 7) << LM3530_MAX_CURR_SHIFT);
+
+        if (drvdata->mode == LM3530_BL_MODE_MANUAL ||
+            drvdata->mode == LM3530_BL_MODE_ALS)
+                gen_config |= (LM3530_ENABLE_I2C);
+
+        if (drvdata->mode == LM3530_BL_MODE_ALS) {
+                als_config =
+                        (pltfm->als_avrg_time << LM3530_ALS_AVG_TIME_SHIFT) |
+                        (LM3530_ENABLE_ALS) |
+                        (pltfm->als_input_mode << LM3530_ALS_SEL_SHIFT);
+
+                als_imp_sel =
+                        (pltfm->als1_resistor_sel << LM3530_ALS1_IMP_SHIFT) |
+                        (pltfm->als2_resistor_sel << LM3530_ALS2_IMP_SHIFT);
+        }
+
+        if (drvdata->mode == LM3530_BL_MODE_PWM)
+                gen_config |= (LM3530_ENABLE_PWM) |
+                                (pltfm->pwm_pol_hi << LM3530_PWM_POL_SHIFT) |
+                                (LM3530_ENABLE_PWM_SIMPLE);
+
+        brt_ramp = (pltfm->brt_ramp_fall << LM3530_BRT_RAMP_FALL_SHIFT) |
+                        (pltfm->brt_ramp_rise << LM3530_BRT_RAMP_RISE_SHIFT);
+
+        brightness = pltfm->brt_val;
+
+        reg_val[0] = gen_config;        /* LM3530_GEN_CONFIG */
+        reg_val[1] = als_config;        /* LM3530_ALS_CONFIG */
+        reg_val[2] = brt_ramp;          /* LM3530_BRT_RAMP_RATE */
+        reg_val[3] = 0x00;              /* LM3530_ALS_ZONE_REG */
+        reg_val[4] = als_imp_sel;       /* LM3530_ALS_IMP_SELECT */
+        reg_val[5] = brightness;        /* LM3530_BRT_CTRL_REG */
+        reg_val[6] = LM3530_DEF_ZB_0;   /* LM3530_ALS_ZB0_REG */
+        reg_val[7] = LM3530_DEF_ZB_1;   /* LM3530_ALS_ZB1_REG */
+        reg_val[8] = LM3530_DEF_ZB_2;   /* LM3530_ALS_ZB2_REG */
+        reg_val[9] = LM3530_DEF_ZB_3;   /* LM3530_ALS_ZB3_REG */
+        reg_val[10] = LM3530_DEF_ZT_0;  /* LM3530_ALS_Z0T_REG */
+        reg_val[11] = LM3530_DEF_ZT_1;  /* LM3530_ALS_Z1T_REG */
+        reg_val[12] = LM3530_DEF_ZT_2;  /* LM3530_ALS_Z2T_REG */
+        reg_val[13] = LM3530_DEF_ZT_3;  /* LM3530_ALS_Z3T_REG */
+        reg_val[14] = LM3530_DEF_ZT_4;  /* LM3530_ALS_Z4T_REG */
+
+        for (i = 0; i < LM3530_REG_MAX; i++) {
+                ret = i2c_smbus_write_byte_data(client,
+                                lm3530_reg[i], reg_val[i]);
+                if (ret)
+                        break;
+        }
+
+        return ret;
+}
+
+static void lm3530_brightness_set(struct led_classdev *led_cdev,
+                                     enum led_brightness brt_val)
+{
+        int err;
+        struct lm3530_data *drvdata =
+            container_of(led_cdev, struct lm3530_data, led_dev);
+
+        switch (drvdata->mode) {
+        case LM3530_BL_MODE_MANUAL:
+
+                /* set the brightness in brightness control register*/
+                err = i2c_smbus_write_byte_data(drvdata->client,
+                                LM3530_BRT_CTRL_REG, brt_val / 2);
+                if (err)
+                        dev_err(&drvdata->client->dev,
+                                "Unable to set brightness: %d\n", err);
+                break;
+        case LM3530_BL_MODE_ALS:
+                break;
+        case LM3530_BL_MODE_PWM:
+                break;
+        default:
+                break;
+        }
+}
+
+
+static ssize_t lm3530_mode_set(struct device *dev, struct device_attribute
+                                   *attr, const char *buf, size_t size)
+{
+        int err;
+        struct i2c_client *client = container_of(
+                                        dev->parent, struct i2c_client, dev);
+        struct lm3530_data *drvdata = i2c_get_clientdata(client);
+        int mode;
+
+        mode = lm3530_get_mode_from_str(buf);
+        if (mode < 0) {
+                dev_err(dev, "Invalid mode\n");
+                return -EINVAL;
+        }
+
+        if (mode == LM3530_BL_MODE_MANUAL)
+                drvdata->mode = LM3530_BL_MODE_MANUAL;
+        else if (mode == LM3530_BL_MODE_ALS)
+                drvdata->mode = LM3530_BL_MODE_ALS;
+        else if (mode == LM3530_BL_MODE_PWM) {
+                dev_err(dev, "PWM mode not supported\n");
+                return -EINVAL;
+        }
+
+        err = lm3530_init_registers(drvdata);
+        if (err) {
+                dev_err(dev, "Setting %s Mode failed :%d\n", buf, err);
+                return err;
+        }
+
+        return sizeof(drvdata->mode);
+}
+
+static DEVICE_ATTR(mode, 0644, NULL, lm3530_mode_set);
+
+static int __devinit lm3530_probe(struct i2c_client *client,
+                           const struct i2c_device_id *id)
+{
+        struct lm3530_platform_data *pdata = client->dev.platform_data;
+        struct lm3530_data *drvdata;
+        int err = 0;
+
+        if (pdata == NULL) {
+                dev_err(&client->dev, "platform data required\n");
+                err = -ENODEV;
+                goto err_out;
+        }
+
+        /* BL mode */
+        if (pdata->mode > LM3530_BL_MODE_PWM) {
+                dev_err(&client->dev, "Illegal Mode request\n");
+                err = -EINVAL;
+                goto err_out;
+        }
+
+        if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+                dev_err(&client->dev, "I2C_FUNC_I2C not supported\n");
+                err = -EIO;
+                goto err_out;
+        }
+
+        drvdata = kzalloc(sizeof(struct lm3530_data), GFP_KERNEL);
+        if (drvdata == NULL) {
+                err = -ENOMEM;
+                goto err_out;
+        }
+
+        drvdata->mode = pdata->mode;
+        drvdata->client = client;
+        drvdata->pdata = pdata;
+        drvdata->led_dev.name = LM3530_LED_DEV;
+        drvdata->led_dev.brightness_set = lm3530_brightness_set;
+
+        i2c_set_clientdata(client, drvdata);
+
+        err = lm3530_init_registers(drvdata);
+        if (err < 0) {
+                dev_err(&client->dev, "Register Init failed: %d\n", err);
+                err = -ENODEV;
+                goto err_reg_init;
+        }
+
+        err = led_classdev_register((struct device *)
+                                      &client->dev, &drvdata->led_dev);
+        if (err < 0) {
+                dev_err(&client->dev, "Register led class failed: %d\n", err);
+                err = -ENODEV;
+                goto err_class_register;
+        }
+
+        err = device_create_file(drvdata->led_dev.dev, &dev_attr_mode);
+        if (err < 0) {
+                dev_err(&client->dev, "File device creation failed: %d\n", err);
+                err = -ENODEV;
+                goto err_create_file;
+        }
+
+        return 0;
+
+err_create_file:
+        led_classdev_unregister(&drvdata->led_dev);
+err_class_register:
+err_reg_init:
+        kfree(drvdata);
+err_out:
+        return err;
+}
+
+static int __devexit lm3530_remove(struct i2c_client *client)
+{
+        struct lm3530_data *drvdata = i2c_get_clientdata(client);
+
+        device_remove_file(drvdata->led_dev.dev, &dev_attr_mode);
+        led_classdev_unregister(&drvdata->led_dev);
+        kfree(drvdata);
+        return 0;
+}
+
+static const struct i2c_device_id lm3530_id[] = {
+        {LM3530_NAME, 0},
+        {}
+};
+
+static struct i2c_driver lm3530_i2c_driver = {
+        .probe = lm3530_probe,
+        .remove = lm3530_remove,
+        .id_table = lm3530_id,
+        .driver = {
+                .name = LM3530_NAME,
+                .owner = THIS_MODULE,
+        },
+};
+
+static int __init lm3530_init(void)
+{
+        return i2c_add_driver(&lm3530_i2c_driver);
+}
+
+static void __exit lm3530_exit(void)
+{
+        i2c_del_driver(&lm3530_i2c_driver);
+}
+
+module_init(lm3530_init);
+module_exit(lm3530_exit);
+
+MODULE_DESCRIPTION("Back Light driver for LM3530");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>");
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index 80a3ae3c00b9..c0cff64a1ae6 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -534,7 +534,7 @@ static ssize_t lp5521_selftest(struct device *dev,
 }
 
 /* led class device attributes */
-static DEVICE_ATTR(led_current, S_IRUGO | S_IWUGO, show_current, store_current);
+static DEVICE_ATTR(led_current, S_IRUGO | S_IWUSR, show_current, store_current);
 static DEVICE_ATTR(max_current, S_IRUGO , show_max_current, NULL);
 
 static struct attribute *lp5521_led_attributes[] = {
@@ -548,15 +548,15 @@ static struct attribute_group lp5521_led_attribute_group = {
 };
 
 /* device attributes */
-static DEVICE_ATTR(engine1_mode, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine1_mode, S_IRUGO | S_IWUSR,
                    show_engine1_mode, store_engine1_mode);
-static DEVICE_ATTR(engine2_mode, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine2_mode, S_IRUGO | S_IWUSR,
                    show_engine2_mode, store_engine2_mode);
-static DEVICE_ATTR(engine3_mode, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine3_mode, S_IRUGO | S_IWUSR,
                    show_engine3_mode, store_engine3_mode);
-static DEVICE_ATTR(engine1_load, S_IWUGO, NULL, store_engine1_load);
-static DEVICE_ATTR(engine2_load, S_IWUGO, NULL, store_engine2_load);
-static DEVICE_ATTR(engine3_load, S_IWUGO, NULL, store_engine3_load);
+static DEVICE_ATTR(engine1_load, S_IWUSR, NULL, store_engine1_load);
+static DEVICE_ATTR(engine2_load, S_IWUSR, NULL, store_engine2_load);
+static DEVICE_ATTR(engine3_load, S_IWUSR, NULL, store_engine3_load);
 static DEVICE_ATTR(selftest, S_IRUGO, lp5521_selftest, NULL);
 
 static struct attribute *lp5521_attributes[] = {
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index d0c4068ecddd..e19fed25f137 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -713,7 +713,7 @@ static ssize_t store_current(struct device *dev,
 }
 
 /* led class device attributes */
-static DEVICE_ATTR(led_current, S_IRUGO | S_IWUGO, show_current, store_current);
+static DEVICE_ATTR(led_current, S_IRUGO | S_IWUSR, show_current, store_current);
 static DEVICE_ATTR(max_current, S_IRUGO , show_max_current, NULL);
 
 static struct attribute *lp5523_led_attributes[] = {
@@ -727,21 +727,21 @@ static struct attribute_group lp5523_led_attribute_group = {
 };
 
 /* device attributes */
-static DEVICE_ATTR(engine1_mode, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine1_mode, S_IRUGO | S_IWUSR,
                    show_engine1_mode, store_engine1_mode);
-static DEVICE_ATTR(engine2_mode, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine2_mode, S_IRUGO | S_IWUSR,
                    show_engine2_mode, store_engine2_mode);
-static DEVICE_ATTR(engine3_mode, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine3_mode, S_IRUGO | S_IWUSR,
                    show_engine3_mode, store_engine3_mode);
-static DEVICE_ATTR(engine1_leds, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine1_leds, S_IRUGO | S_IWUSR,
                    show_engine1_leds, store_engine1_leds);
-static DEVICE_ATTR(engine2_leds, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine2_leds, S_IRUGO | S_IWUSR,
                    show_engine2_leds, store_engine2_leds);
-static DEVICE_ATTR(engine3_leds, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine3_leds, S_IRUGO | S_IWUSR,
                    show_engine3_leds, store_engine3_leds);
-static DEVICE_ATTR(engine1_load, S_IWUGO, NULL, store_engine1_load);
-static DEVICE_ATTR(engine2_load, S_IWUGO, NULL, store_engine2_load);
-static DEVICE_ATTR(engine3_load, S_IWUGO, NULL, store_engine3_load);
+static DEVICE_ATTR(engine1_load, S_IWUSR, NULL, store_engine1_load);
+static DEVICE_ATTR(engine2_load, S_IWUSR, NULL, store_engine2_load);
+static DEVICE_ATTR(engine3_load, S_IWUSR, NULL, store_engine3_load);
 static DEVICE_ATTR(selftest, S_IRUGO, lp5523_selftest, NULL);
 
 static struct attribute *lp5523_attributes[] = {
diff --git a/drivers/leds/leds-net5501.c b/drivers/leds/leds-net5501.c
index 1739557a9038..7e764b8365e6 100644
--- a/drivers/leds/leds-net5501.c
+++ b/drivers/leds/leds-net5501.c
@@ -19,7 +19,7 @@
 
 #include <asm/geode.h>
 
-static struct gpio_led net5501_leds[] = {
+static const struct gpio_led net5501_leds[] = {
         {
                 .name = "error",
                 .gpio = 6,
diff --git a/drivers/macintosh/via-pmu-backlight.c b/drivers/macintosh/via-pmu-backlight.c
index ade1e656bfb2..b1d91170ded0 100644
--- a/drivers/macintosh/via-pmu-backlight.c
+++ b/drivers/macintosh/via-pmu-backlight.c
@@ -163,6 +163,7 @@ void __init pmu_backlight_init()
         snprintf(name, sizeof(name), "pmubl");
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_PLATFORM;
         props.max_brightness = FB_BACKLIGHT_LEVELS - 1;
         bd = backlight_device_register(name, NULL, NULL, &pmu_backlight_data,
                                        &props);
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 203500d9b848..4e007c6a4b44 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -402,6 +402,16 @@ config DS1682
           This driver can also be built as a module.  If so, the module
           will be called ds1682.
 
+config SPEAR13XX_PCIE_GADGET
+        bool "PCIe gadget support for SPEAr13XX platform"
+        depends on ARCH_SPEAR13XX
+        default n
+        help
+         This option enables gadget support for PCIe controller. If
+         board file defines any controller as PCIe endpoint then a sysfs
+         entry will be created for that controller. User can use these
+         sysfs node to configure PCIe EP as per his requirements.
+
 config TI_DAC7512
         tristate "Texas Instruments DAC7512"
         depends on SPI && SYSFS
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 804f421bc079..f5468602961f 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_IWMC3200TOP)      += iwmc3200top/
 obj-$(CONFIG_HMC6352)           += hmc6352.o
 obj-y                           += eeprom/
 obj-y                           += cb710/
+obj-$(CONFIG_SPEAR13XX_PCIE_GADGET)     += spear13xx_pcie_gadget.o
 obj-$(CONFIG_VMWARE_BALLOON)    += vmw_balloon.o
 obj-$(CONFIG_ARM_CHARLCD)       += arm-charlcd.o
 obj-$(CONFIG_PCH_PHUB)          += pch_phub.o
diff --git a/drivers/misc/apds9802als.c b/drivers/misc/apds9802als.c
index 644d4cd071cc..81db7811cf68 100644
--- a/drivers/misc/apds9802als.c
+++ b/drivers/misc/apds9802als.c
@@ -245,9 +245,8 @@ static int apds9802als_probe(struct i2c_client *client,
         als_set_default_config(client);
         mutex_init(&data->mutex);
 
+        pm_runtime_set_active(&client->dev);
         pm_runtime_enable(&client->dev);
-        pm_runtime_get(&client->dev);
-        pm_runtime_put(&client->dev);
 
         return res;
 als_error1:
@@ -255,12 +254,19 @@ als_error1:
         return res;
 }
 
-static int apds9802als_remove(struct i2c_client *client)
+static int __devexit apds9802als_remove(struct i2c_client *client)
 {
         struct als_data *data = i2c_get_clientdata(client);
 
+        pm_runtime_get_sync(&client->dev);
+
         als_set_power_state(client, false);
         sysfs_remove_group(&client->dev.kobj, &m_als_gr);
+
+        pm_runtime_disable(&client->dev);
+        pm_runtime_set_suspended(&client->dev);
+        pm_runtime_put_noidle(&client->dev);
+
         kfree(data);
         return 0;
 }
@@ -275,9 +281,6 @@ static int apds9802als_suspend(struct i2c_client *client, pm_message_t mesg)
 static int apds9802als_resume(struct i2c_client *client)
 {
         als_set_default_config(client);
-
-        pm_runtime_get(&client->dev);
-        pm_runtime_put(&client->dev);
         return 0;
 }
 
@@ -323,7 +326,7 @@ static struct i2c_driver apds9802als_driver = {
                 .pm = APDS9802ALS_PM_OPS,
         },
         .probe = apds9802als_probe,
-        .remove = apds9802als_remove,
+        .remove = __devexit_p(apds9802als_remove),
         .suspend = apds9802als_suspend,
         .resume = apds9802als_resume,
         .id_table = apds9802als_id,
diff --git a/drivers/misc/atmel_tclib.c b/drivers/misc/atmel_tclib.c
index 3891124001f2..a844810b50f6 100644
--- a/drivers/misc/atmel_tclib.c
+++ b/drivers/misc/atmel_tclib.c
@@ -75,7 +75,7 @@ out:
         return tc;
 
 fail_ioremap:
-        release_resource(r);
+        release_mem_region(r->start, ATMEL_TC_IOMEM_SIZE);
 fail:
         tc = NULL;
         goto out;
@@ -95,7 +95,7 @@ void atmel_tc_free(struct atmel_tc *tc)
         spin_lock(&tc_list_lock);
         if (tc->regs) {
                 iounmap(tc->regs);
-                release_resource(tc->iomem);
+                release_mem_region(tc->iomem->start, ATMEL_TC_IOMEM_SIZE);
                 tc->regs = NULL;
                 tc->iomem = NULL;
         }
diff --git a/drivers/misc/bh1780gli.c b/drivers/misc/bh1780gli.c
index d5f3a3fd2319..d07cd67c951c 100644
--- a/drivers/misc/bh1780gli.c
+++ b/drivers/misc/bh1780gli.c
@@ -196,10 +196,11 @@ static int __devexit bh1780_remove(struct i2c_client *client)
 }
 
 #ifdef CONFIG_PM
-static int bh1780_suspend(struct i2c_client *client, pm_message_t mesg)
+static int bh1780_suspend(struct device *dev)
 {
         struct bh1780_data *ddata;
         int state, ret;
+        struct i2c_client *client = to_i2c_client(dev);
 
         ddata = i2c_get_clientdata(client);
         state = bh1780_read(ddata, BH1780_REG_CONTROL, "CONTROL");
@@ -217,14 +218,14 @@ static int bh1780_suspend(struct i2c_client *client, pm_message_t mesg)
         return 0;
 }
 
-static int bh1780_resume(struct i2c_client *client)
+static int bh1780_resume(struct device *dev)
 {
         struct bh1780_data *ddata;
         int state, ret;
+        struct i2c_client *client = to_i2c_client(dev);
 
         ddata = i2c_get_clientdata(client);
         state = ddata->power_state;
-
         ret = bh1780_write(ddata, BH1780_REG_CONTROL, state,
                                 "CONTROL");
 
@@ -233,9 +234,10 @@ static int bh1780_resume(struct i2c_client *client)
 
         return 0;
 }
+static SIMPLE_DEV_PM_OPS(bh1780_pm, bh1780_suspend, bh1780_resume);
+#define BH1780_PMOPS (&bh1780_pm)
 #else
-#define bh1780_suspend NULL
-#define bh1780_resume NULL
+#define BH1780_PMOPS NULL
 #endif /* CONFIG_PM */
 
 static const struct i2c_device_id bh1780_id[] = {
@@ -247,11 +249,10 @@ static struct i2c_driver bh1780_driver = {
         .probe          = bh1780_probe,
         .remove         = bh1780_remove,
         .id_table       = bh1780_id,
-        .suspend        = bh1780_suspend,
-        .resume         = bh1780_resume,
         .driver = {
-                .name = "bh1780"
-        },
+                .name = "bh1780",
+                .pm     = BH1780_PMOPS,
+},
 };
 
 static int __init bh1780_init(void)
diff --git a/drivers/misc/bmp085.c b/drivers/misc/bmp085.c
index b6e1c9a6679e..ecd276ad6b19 100644
--- a/drivers/misc/bmp085.c
+++ b/drivers/misc/bmp085.c
@@ -402,7 +402,7 @@ exit:
         return status;
 }
 
-static int bmp085_probe(struct i2c_client *client,
+static int __devinit bmp085_probe(struct i2c_client *client,
                          const struct i2c_device_id *id)
 {
         struct bmp085_data *data;
@@ -438,7 +438,7 @@ exit:
         return err;
 }
 
-static int bmp085_remove(struct i2c_client *client)
+static int __devexit bmp085_remove(struct i2c_client *client)
 {
         sysfs_remove_group(&client->dev.kobj, &bmp085_attr_group);
         kfree(i2c_get_clientdata(client));
@@ -458,7 +458,7 @@ static struct i2c_driver bmp085_driver = {
         },
         .id_table       = bmp085_id,
         .probe          = bmp085_probe,
-        .remove         = bmp085_remove,
+        .remove         = __devexit_p(bmp085_remove),
 
         .detect         = bmp085_detect,
         .address_list   = normal_i2c
diff --git a/drivers/misc/ep93xx_pwm.c b/drivers/misc/ep93xx_pwm.c
index 46b3439673e9..16d7179e2f9b 100644
--- a/drivers/misc/ep93xx_pwm.c
+++ b/drivers/misc/ep93xx_pwm.c
@@ -249,11 +249,11 @@ static ssize_t ep93xx_pwm_set_invert(struct device *dev,
 
 static DEVICE_ATTR(min_freq, S_IRUGO, ep93xx_pwm_get_min_freq, NULL);
 static DEVICE_ATTR(max_freq, S_IRUGO, ep93xx_pwm_get_max_freq, NULL);
-static DEVICE_ATTR(freq, S_IWUGO | S_IRUGO,
+static DEVICE_ATTR(freq, S_IWUSR | S_IRUGO,
                    ep93xx_pwm_get_freq, ep93xx_pwm_set_freq);
-static DEVICE_ATTR(duty_percent, S_IWUGO | S_IRUGO,
+static DEVICE_ATTR(duty_percent, S_IWUSR | S_IRUGO,
                    ep93xx_pwm_get_duty_percent, ep93xx_pwm_set_duty_percent);
-static DEVICE_ATTR(invert, S_IWUGO | S_IRUGO,
+static DEVICE_ATTR(invert, S_IWUSR | S_IRUGO,
                    ep93xx_pwm_get_invert, ep93xx_pwm_set_invert);
 
 static struct attribute *ep93xx_pwm_attrs[] = {
diff --git a/drivers/misc/hmc6352.c b/drivers/misc/hmc6352.c
index 234bfcaf2099..ca938fc8a8d6 100644
--- a/drivers/misc/hmc6352.c
+++ b/drivers/misc/hmc6352.c
@@ -75,7 +75,7 @@ static ssize_t compass_heading_data_show(struct device *dev,
 {
         struct i2c_client *client = to_i2c_client(dev);
         unsigned char i2c_data[2];
-        unsigned int ret;
+        int ret;
 
         mutex_lock(&compass_mutex);
         ret = compass_command(client, 'A');
@@ -86,7 +86,7 @@ static ssize_t compass_heading_data_show(struct device *dev,
         msleep(10); /* sending 'A' cmd we need to wait for 7-10 millisecs */
         ret = i2c_master_recv(client, i2c_data, 2);
         mutex_unlock(&compass_mutex);
-        if (ret != 1) {
+        if (ret < 0) {
                 dev_warn(dev, "i2c read data cmd failed\n");
                 return ret;
         }
diff --git a/drivers/misc/pch_phub.c b/drivers/misc/pch_phub.c
index 380ba806495d..a19cb710a246 100644
--- a/drivers/misc/pch_phub.c
+++ b/drivers/misc/pch_phub.c
@@ -735,6 +735,7 @@ static struct pci_device_id pch_phub_pcidev_id[] = {
         { PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7213_PHUB), 2,  },
         { }
 };
+MODULE_DEVICE_TABLE(pci, pch_phub_pcidev_id);
 
 static struct pci_driver pch_phub_driver = {
         .name = "pch_phub",
diff --git a/drivers/misc/spear13xx_pcie_gadget.c b/drivers/misc/spear13xx_pcie_gadget.c
new file mode 100644
index 000000000000..ec3b8c911833
--- /dev/null
+++ b/drivers/misc/spear13xx_pcie_gadget.c
@@ -0,0 +1,908 @@
+/*
+ * drivers/misc/spear13xx_pcie_gadget.c
+ *
+ * Copyright (C) 2010 ST Microelectronics
+ * Pratyush Anand<pratyush.anand@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/clk.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pci_regs.h>
+#include <linux/configfs.h>
+#include <mach/pcie.h>
+#include <mach/misc_regs.h>
+
+#define IN0_MEM_SIZE    (200 * 1024 * 1024 - 1)
+/* In current implementation address translation is done using IN0 only.
+ * So IN1 start address and IN0 end address has been kept same
+*/
+#define IN1_MEM_SIZE    (0 * 1024 * 1024 - 1)
+#define IN_IO_SIZE      (20 * 1024 * 1024 - 1)
+#define IN_CFG0_SIZE    (12 * 1024 * 1024 - 1)
+#define IN_CFG1_SIZE    (12 * 1024 * 1024 - 1)
+#define IN_MSG_SIZE     (12 * 1024 * 1024 - 1)
+/* Keep default BAR size as 4K*/
+/* AORAM would be mapped by default*/
+#define INBOUND_ADDR_MASK       (SPEAR13XX_SYSRAM1_SIZE - 1)
+
+#define INT_TYPE_NO_INT 0
+#define INT_TYPE_INTX   1
+#define INT_TYPE_MSI    2
+struct spear_pcie_gadget_config {
+        void __iomem *base;
+        void __iomem *va_app_base;
+        void __iomem *va_dbi_base;
+        char int_type[10];
+        ulong requested_msi;
+        ulong configured_msi;
+        ulong bar0_size;
+        ulong bar0_rw_offset;
+        void __iomem *va_bar0_address;
+};
+
+struct pcie_gadget_target {
+        struct configfs_subsystem subsys;
+        struct spear_pcie_gadget_config config;
+};
+
+struct pcie_gadget_target_attr {
+        struct configfs_attribute       attr;
+        ssize_t         (*show)(struct spear_pcie_gadget_config *config,
+                                                char *buf);
+        ssize_t         (*store)(struct spear_pcie_gadget_config *config,
+                                                 const char *buf,
+                                                 size_t count);
+};
+
+static void enable_dbi_access(struct pcie_app_reg __iomem *app_reg)
+{
+        /* Enable DBI access */
+        writel(readl(&app_reg->slv_armisc) | (1 << AXI_OP_DBI_ACCESS_ID),
+                        &app_reg->slv_armisc);
+        writel(readl(&app_reg->slv_awmisc) | (1 << AXI_OP_DBI_ACCESS_ID),
+                        &app_reg->slv_awmisc);
+
+}
+
+static void disable_dbi_access(struct pcie_app_reg __iomem *app_reg)
+{
+        /* disable DBI access */
+        writel(readl(&app_reg->slv_armisc) & ~(1 << AXI_OP_DBI_ACCESS_ID),
+                        &app_reg->slv_armisc);
+        writel(readl(&app_reg->slv_awmisc) & ~(1 << AXI_OP_DBI_ACCESS_ID),
+                        &app_reg->slv_awmisc);
+
+}
+
+static void spear_dbi_read_reg(struct spear_pcie_gadget_config *config,
+                int where, int size, u32 *val)
+{
+        struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+        ulong va_address;
+
+        /* Enable DBI access */
+        enable_dbi_access(app_reg);
+
+        va_address = (ulong)config->va_dbi_base + (where & ~0x3);
+
+        *val = readl(va_address);
+
+        if (size == 1)
+                *val = (*val >> (8 * (where & 3))) & 0xff;
+        else if (size == 2)
+                *val = (*val >> (8 * (where & 3))) & 0xffff;
+
+        /* Disable DBI access */
+        disable_dbi_access(app_reg);
+}
+
+static void spear_dbi_write_reg(struct spear_pcie_gadget_config *config,
+                int where, int size, u32 val)
+{
+        struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+        ulong va_address;
+
+        /* Enable DBI access */
+        enable_dbi_access(app_reg);
+
+        va_address = (ulong)config->va_dbi_base + (where & ~0x3);
+
+        if (size == 4)
+                writel(val, va_address);
+        else if (size == 2)
+                writew(val, va_address + (where & 2));
+        else if (size == 1)
+                writeb(val, va_address + (where & 3));
+
+        /* Disable DBI access */
+        disable_dbi_access(app_reg);
+}
+
+#define PCI_FIND_CAP_TTL        48
+
+static int pci_find_own_next_cap_ttl(struct spear_pcie_gadget_config *config,
+                u32 pos, int cap, int *ttl)
+{
+        u32 id;
+
+        while ((*ttl)--) {
+                spear_dbi_read_reg(config, pos, 1, &pos);
+                if (pos < 0x40)
+                        break;
+                pos &= ~3;
+                spear_dbi_read_reg(config, pos + PCI_CAP_LIST_ID, 1, &id);
+                if (id == 0xff)
+                        break;
+                if (id == cap)
+                        return pos;
+                pos += PCI_CAP_LIST_NEXT;
+        }
+        return 0;
+}
+
+static int pci_find_own_next_cap(struct spear_pcie_gadget_config *config,
+                        u32 pos, int cap)
+{
+        int ttl = PCI_FIND_CAP_TTL;
+
+        return pci_find_own_next_cap_ttl(config, pos, cap, &ttl);
+}
+
+static int pci_find_own_cap_start(struct spear_pcie_gadget_config *config,
+                                u8 hdr_type)
+{
+        u32 status;
+
+        spear_dbi_read_reg(config, PCI_STATUS, 2, &status);
+        if (!(status & PCI_STATUS_CAP_LIST))
+                return 0;
+
+        switch (hdr_type) {
+        case PCI_HEADER_TYPE_NORMAL:
+        case PCI_HEADER_TYPE_BRIDGE:
+                return PCI_CAPABILITY_LIST;
+        case PCI_HEADER_TYPE_CARDBUS:
+                return PCI_CB_CAPABILITY_LIST;
+        default:
+                return 0;
+        }
+
+        return 0;
+}
+
+/*
+ * Tell if a device supports a given PCI capability.
+ * Returns the address of the requested capability structure within the
+ * device's PCI configuration space or 0 in case the device does not
+ * support it. Possible values for @cap:
+ *
+ * %PCI_CAP_ID_PM       Power Management
+ * %PCI_CAP_ID_AGP      Accelerated Graphics Port
+ * %PCI_CAP_ID_VPD      Vital Product Data
+ * %PCI_CAP_ID_SLOTID   Slot Identification
+ * %PCI_CAP_ID_MSI      Message Signalled Interrupts
+ * %PCI_CAP_ID_CHSWP    CompactPCI HotSwap
+ * %PCI_CAP_ID_PCIX     PCI-X
+ * %PCI_CAP_ID_EXP      PCI Express
+ */
+static int pci_find_own_capability(struct spear_pcie_gadget_config *config,
+                int cap)
+{
+        u32 pos;
+        u32 hdr_type;
+
+        spear_dbi_read_reg(config, PCI_HEADER_TYPE, 1, &hdr_type);
+
+        pos = pci_find_own_cap_start(config, hdr_type);
+        if (pos)
+                pos = pci_find_own_next_cap(config, pos, cap);
+
+        return pos;
+}
+
+static irqreturn_t spear_pcie_gadget_irq(int irq, void *dev_id)
+{
+        return 0;
+}
+
+/*
+ * configfs interfaces show/store functions
+ */
+static ssize_t pcie_gadget_show_link(
+                struct spear_pcie_gadget_config *config,
+                char *buf)
+{
+        struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+
+        if (readl(&app_reg->app_status_1) & ((u32)1 << XMLH_LINK_UP_ID))
+                return sprintf(buf, "UP");
+        else
+                return sprintf(buf, "DOWN");
+}
+
+static ssize_t pcie_gadget_store_link(
+                struct spear_pcie_gadget_config *config,
+                const char *buf, size_t count)
+{
+        struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+
+        if (sysfs_streq(buf, "UP"))
+                writel(readl(&app_reg->app_ctrl_0) | (1 << APP_LTSSM_ENABLE_ID),
+                        &app_reg->app_ctrl_0);
+        else if (sysfs_streq(buf, "DOWN"))
+                writel(readl(&app_reg->app_ctrl_0)
+                                & ~(1 << APP_LTSSM_ENABLE_ID),
+                                &app_reg->app_ctrl_0);
+        else
+                return -EINVAL;
+        return count;
+}
+
+static ssize_t pcie_gadget_show_int_type(
+                struct spear_pcie_gadget_config *config,
+                char *buf)
+{
+        return sprintf(buf, "%s", config->int_type);
+}
+
+static ssize_t pcie_gadget_store_int_type(
+                struct spear_pcie_gadget_config *config,
+                const char *buf, size_t count)
+{
+        u32 cap, vec, flags;
+        ulong vector;
+
+        if (sysfs_streq(buf, "INTA"))
+                spear_dbi_write_reg(config, PCI_INTERRUPT_LINE, 1, 1);
+
+        else if (sysfs_streq(buf, "MSI")) {
+                vector = config->requested_msi;
+                vec = 0;
+                while (vector > 1) {
+                        vector /= 2;
+                        vec++;
+                }
+                spear_dbi_write_reg(config, PCI_INTERRUPT_LINE, 1, 0);
+                cap = pci_find_own_capability(config, PCI_CAP_ID_MSI);
+                spear_dbi_read_reg(config, cap + PCI_MSI_FLAGS, 1, &flags);
+                flags &= ~PCI_MSI_FLAGS_QMASK;
+                flags |= vec << 1;
+                spear_dbi_write_reg(config, cap + PCI_MSI_FLAGS, 1, flags);
+        } else
+                return -EINVAL;
+
+        strcpy(config->int_type, buf);
+
+        return count;
+}
+
+static ssize_t pcie_gadget_show_no_of_msi(
+                struct spear_pcie_gadget_config *config,
+                char *buf)
+{
+        struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+        u32 cap, vec, flags;
+        ulong vector;
+
+        if ((readl(&app_reg->msg_status) & (1 << CFG_MSI_EN_ID))
+                        != (1 << CFG_MSI_EN_ID))
+                vector = 0;
+        else {
+                cap = pci_find_own_capability(config, PCI_CAP_ID_MSI);
+                spear_dbi_read_reg(config, cap + PCI_MSI_FLAGS, 1, &flags);
+                flags &= ~PCI_MSI_FLAGS_QSIZE;
+                vec = flags >> 4;
+                vector = 1;
+                while (vec--)
+                        vector *= 2;
+        }
+        config->configured_msi = vector;
+
+        return sprintf(buf, "%lu", vector);
+}
+
+static ssize_t pcie_gadget_store_no_of_msi(
+                struct spear_pcie_gadget_config *config,
+                const char *buf, size_t count)
+{
+        if (strict_strtoul(buf, 0, &config->requested_msi))
+                return -EINVAL;
+        if (config->requested_msi > 32)
+                config->requested_msi = 32;
+
+        return count;
+}
+
+static ssize_t pcie_gadget_store_inta(
+                struct spear_pcie_gadget_config *config,
+                const char *buf, size_t count)
+{
+        struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+        ulong en;
+
+        if (strict_strtoul(buf, 0, &en))
+                return -EINVAL;
+
+        if (en)
+                writel(readl(&app_reg->app_ctrl_0) | (1 << SYS_INT_ID),
+                                &app_reg->app_ctrl_0);
+        else
+                writel(readl(&app_reg->app_ctrl_0) & ~(1 << SYS_INT_ID),
+                                &app_reg->app_ctrl_0);
+
+        return count;
+}
+
+static ssize_t pcie_gadget_store_send_msi(
+                struct spear_pcie_gadget_config *config,
+                const char *buf, size_t count)
+{
+        struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+        ulong vector;
+        u32 ven_msi;
+
+        if (strict_strtoul(buf, 0, &vector))
+                return -EINVAL;
+
+        if (!config->configured_msi)
+                return -EINVAL;
+
+        if (vector >= config->configured_msi)
+                return -EINVAL;
+
+        ven_msi = readl(&app_reg->ven_msi_1);
+        ven_msi &= ~VEN_MSI_FUN_NUM_MASK;
+        ven_msi |= 0 << VEN_MSI_FUN_NUM_ID;
+        ven_msi &= ~VEN_MSI_TC_MASK;
+        ven_msi |= 0 << VEN_MSI_TC_ID;
+        ven_msi &= ~VEN_MSI_VECTOR_MASK;
+        ven_msi |= vector << VEN_MSI_VECTOR_ID;
+
+        /* generating interrupt for msi vector */
+        ven_msi |= VEN_MSI_REQ_EN;
+        writel(ven_msi, &app_reg->ven_msi_1);
+        udelay(1);
+        ven_msi &= ~VEN_MSI_REQ_EN;
+        writel(ven_msi, &app_reg->ven_msi_1);
+
+        return count;
+}
+
+static ssize_t pcie_gadget_show_vendor_id(
+                struct spear_pcie_gadget_config *config,
+                char *buf)
+{
+        u32 id;
+
+        spear_dbi_read_reg(config, PCI_VENDOR_ID, 2, &id);
+
+        return sprintf(buf, "%x", id);
+}
+
+static ssize_t pcie_gadget_store_vendor_id(
+                struct spear_pcie_gadget_config *config,
+                const char *buf, size_t count)
+{
+        ulong id;
+
+        if (strict_strtoul(buf, 0, &id))
+                return -EINVAL;
+
+        spear_dbi_write_reg(config, PCI_VENDOR_ID, 2, id);
+
+        return count;
+}
+
+static ssize_t pcie_gadget_show_device_id(
+                struct spear_pcie_gadget_config *config,
+                char *buf)
+{
+        u32 id;
+
+        spear_dbi_read_reg(config, PCI_DEVICE_ID, 2, &id);
+
+        return sprintf(buf, "%x", id);
+}
+
+static ssize_t pcie_gadget_store_device_id(
+                struct spear_pcie_gadget_config *config,
+                const char *buf, size_t count)
+{
+        ulong id;
+
+        if (strict_strtoul(buf, 0, &id))
+                return -EINVAL;
+
+        spear_dbi_write_reg(config, PCI_DEVICE_ID, 2, id);
+
+        return count;
+}
+
+static ssize_t pcie_gadget_show_bar0_size(
+                struct spear_pcie_gadget_config *config,
+                char *buf)
+{
+        return sprintf(buf, "%lx", config->bar0_size);
+}
+
+static ssize_t pcie_gadget_store_bar0_size(
+                struct spear_pcie_gadget_config *config,
+                const char *buf, size_t count)
+{
+        ulong size;
+        u32 pos, pos1;
+        u32 no_of_bit = 0;
+
+        if (strict_strtoul(buf, 0, &size))
+                return -EINVAL;
+        /* min bar size is 256 */
+        if (size <= 0x100)
+                size = 0x100;
+        /* max bar size is 1MB*/
+        else if (size >= 0x100000)
+                size = 0x100000;
+        else {
+                pos = 0;
+                pos1 = 0;
+                while (pos < 21) {
+                        pos = find_next_bit((ulong *)&size, 21, pos);
+                        if (pos != 21)
+                                pos1 = pos + 1;
+                        pos++;
+                        no_of_bit++;
+                }
+                if (no_of_bit == 2)
+                        pos1--;
+
+                size = 1 << pos1;
+        }
+        config->bar0_size = size;
+        spear_dbi_write_reg(config, PCIE_BAR0_MASK_REG, 4, size - 1);
+
+        return count;
+}
+
+static ssize_t pcie_gadget_show_bar0_address(
+                struct spear_pcie_gadget_config *config,
+                char *buf)
+{
+        struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+
+        u32 address = readl(&app_reg->pim0_mem_addr_start);
+
+        return sprintf(buf, "%x", address);
+}
+
+static ssize_t pcie_gadget_store_bar0_address(
+                struct spear_pcie_gadget_config *config,
+                const char *buf, size_t count)
+{
+        struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+        ulong address;
+
+        if (strict_strtoul(buf, 0, &address))
+                return -EINVAL;
+
+        address &= ~(config->bar0_size - 1);
+        if (config->va_bar0_address)
+                iounmap(config->va_bar0_address);
+        config->va_bar0_address = ioremap(address, config->bar0_size);
+        if (!config->va_bar0_address)
+                return -ENOMEM;
+
+        writel(address, &app_reg->pim0_mem_addr_start);
+
+        return count;
+}
+
+static ssize_t pcie_gadget_show_bar0_rw_offset(
+                struct spear_pcie_gadget_config *config,
+                char *buf)
+{
+        return sprintf(buf, "%lx", config->bar0_rw_offset);
+}
+
+static ssize_t pcie_gadget_store_bar0_rw_offset(
+                struct spear_pcie_gadget_config *config,
+                const char *buf, size_t count)
+{
+        ulong offset;
+
+        if (strict_strtoul(buf, 0, &offset))
+                return -EINVAL;
+
+        if (offset % 4)
+                return -EINVAL;
+
+        config->bar0_rw_offset = offset;
+
+        return count;
+}
+
+static ssize_t pcie_gadget_show_bar0_data(
+                struct spear_pcie_gadget_config *config,
+                char *buf)
+{
+        ulong data;
+
+        if (!config->va_bar0_address)
+                return -ENOMEM;
+
+        data = readl((ulong)config->va_bar0_address + config->bar0_rw_offset);
+
+        return sprintf(buf, "%lx", data);
+}
+
+static ssize_t pcie_gadget_store_bar0_data(
+                struct spear_pcie_gadget_config *config,
+                const char *buf, size_t count)
+{
+        ulong data;
+
+        if (strict_strtoul(buf, 0, &data))
+                return -EINVAL;
+
+        if (!config->va_bar0_address)
+                return -ENOMEM;
+
+        writel(data, (ulong)config->va_bar0_address + config->bar0_rw_offset);
+
+        return count;
+}
+
+/*
+ * Attribute definitions.
+ */
+
+#define PCIE_GADGET_TARGET_ATTR_RO(_name)                               \
+static struct pcie_gadget_target_attr pcie_gadget_target_##_name =      \
+        __CONFIGFS_ATTR(_name, S_IRUGO, pcie_gadget_show_##_name, NULL)
+
+#define PCIE_GADGET_TARGET_ATTR_WO(_name)                               \
+static struct pcie_gadget_target_attr pcie_gadget_target_##_name =      \
+        __CONFIGFS_ATTR(_name, S_IWUSR, NULL, pcie_gadget_store_##_name)
+
+#define PCIE_GADGET_TARGET_ATTR_RW(_name)                               \
+static struct pcie_gadget_target_attr pcie_gadget_target_##_name =      \
+        __CONFIGFS_ATTR(_name, S_IRUGO | S_IWUSR, pcie_gadget_show_##_name, \
+                        pcie_gadget_store_##_name)
+PCIE_GADGET_TARGET_ATTR_RW(link);
+PCIE_GADGET_TARGET_ATTR_RW(int_type);
+PCIE_GADGET_TARGET_ATTR_RW(no_of_msi);
+PCIE_GADGET_TARGET_ATTR_WO(inta);
+PCIE_GADGET_TARGET_ATTR_WO(send_msi);
+PCIE_GADGET_TARGET_ATTR_RW(vendor_id);
+PCIE_GADGET_TARGET_ATTR_RW(device_id);
+PCIE_GADGET_TARGET_ATTR_RW(bar0_size);
+PCIE_GADGET_TARGET_ATTR_RW(bar0_address);
+PCIE_GADGET_TARGET_ATTR_RW(bar0_rw_offset);
+PCIE_GADGET_TARGET_ATTR_RW(bar0_data);
+
+static struct configfs_attribute *pcie_gadget_target_attrs[] = {
+        &pcie_gadget_target_link.attr,
+        &pcie_gadget_target_int_type.attr,
+        &pcie_gadget_target_no_of_msi.attr,
+        &pcie_gadget_target_inta.attr,
+        &pcie_gadget_target_send_msi.attr,
+        &pcie_gadget_target_vendor_id.attr,
+        &pcie_gadget_target_device_id.attr,
+        &pcie_gadget_target_bar0_size.attr,
+        &pcie_gadget_target_bar0_address.attr,
+        &pcie_gadget_target_bar0_rw_offset.attr,
+        &pcie_gadget_target_bar0_data.attr,
+        NULL,
+};
+
+static struct pcie_gadget_target *to_target(struct config_item *item)
+{
+        return item ?
+                container_of(to_configfs_subsystem(to_config_group(item)),
+                                struct pcie_gadget_target, subsys) : NULL;
+}
+
+/*
+ * Item operations and type for pcie_gadget_target.
+ */
+
+static ssize_t pcie_gadget_target_attr_show(struct config_item *item,
+                                           struct configfs_attribute *attr,
+                                           char *buf)
+{
+        ssize_t ret = -EINVAL;
+        struct pcie_gadget_target *target = to_target(item);
+        struct pcie_gadget_target_attr *t_attr =
+                container_of(attr, struct pcie_gadget_target_attr, attr);
+
+        if (t_attr->show)
+                ret = t_attr->show(&target->config, buf);
+        return ret;
+}
+
+static ssize_t pcie_gadget_target_attr_store(struct config_item *item,
+                                        struct configfs_attribute *attr,
+                                        const char *buf,
+                                        size_t count)
+{
+        ssize_t ret = -EINVAL;
+        struct pcie_gadget_target *target = to_target(item);
+        struct pcie_gadget_target_attr *t_attr =
+                container_of(attr, struct pcie_gadget_target_attr, attr);
+
+        if (t_attr->store)
+                ret = t_attr->store(&target->config, buf, count);
+        return ret;
+}
+
+static struct configfs_item_operations pcie_gadget_target_item_ops = {
+        .show_attribute         = pcie_gadget_target_attr_show,
+        .store_attribute        = pcie_gadget_target_attr_store,
+};
+
+static struct config_item_type pcie_gadget_target_type = {
+        .ct_attrs               = pcie_gadget_target_attrs,
+        .ct_item_ops            = &pcie_gadget_target_item_ops,
+        .ct_owner               = THIS_MODULE,
+};
+
+static void spear13xx_pcie_device_init(struct spear_pcie_gadget_config *config)
+{
+        struct pcie_app_reg __iomem *app_reg = config->va_app_base;
+
+        /*setup registers for outbound translation */
+
+        writel(config->base, &app_reg->in0_mem_addr_start);
+        writel(app_reg->in0_mem_addr_start + IN0_MEM_SIZE,
+                        &app_reg->in0_mem_addr_limit);
+        writel(app_reg->in0_mem_addr_limit + 1, &app_reg->in1_mem_addr_start);
+        writel(app_reg->in1_mem_addr_start + IN1_MEM_SIZE,
+                        &app_reg->in1_mem_addr_limit);
+        writel(app_reg->in1_mem_addr_limit + 1, &app_reg->in_io_addr_start);
+        writel(app_reg->in_io_addr_start + IN_IO_SIZE,
+                        &app_reg->in_io_addr_limit);
+        writel(app_reg->in_io_addr_limit + 1, &app_reg->in_cfg0_addr_start);
+        writel(app_reg->in_cfg0_addr_start + IN_CFG0_SIZE,
+                        &app_reg->in_cfg0_addr_limit);
+        writel(app_reg->in_cfg0_addr_limit + 1, &app_reg->in_cfg1_addr_start);
+        writel(app_reg->in_cfg1_addr_start + IN_CFG1_SIZE,
+                        &app_reg->in_cfg1_addr_limit);
+        writel(app_reg->in_cfg1_addr_limit + 1, &app_reg->in_msg_addr_start);
+        writel(app_reg->in_msg_addr_start + IN_MSG_SIZE,
+                        &app_reg->in_msg_addr_limit);
+
+        writel(app_reg->in0_mem_addr_start, &app_reg->pom0_mem_addr_start);
+        writel(app_reg->in1_mem_addr_start, &app_reg->pom1_mem_addr_start);
+        writel(app_reg->in_io_addr_start, &app_reg->pom_io_addr_start);
+
+        /*setup registers for inbound translation */
+
+        /* Keep AORAM mapped at BAR0 as default */
+        config->bar0_size = INBOUND_ADDR_MASK + 1;
+        spear_dbi_write_reg(config, PCIE_BAR0_MASK_REG, 4, INBOUND_ADDR_MASK);
+        spear_dbi_write_reg(config, PCI_BASE_ADDRESS_0, 4, 0xC);
+        config->va_bar0_address = ioremap(SPEAR13XX_SYSRAM1_BASE,
+                        config->bar0_size);
+
+        writel(SPEAR13XX_SYSRAM1_BASE, &app_reg->pim0_mem_addr_start);
+        writel(0, &app_reg->pim1_mem_addr_start);
+        writel(INBOUND_ADDR_MASK + 1, &app_reg->mem0_addr_offset_limit);
+
+        writel(0x0, &app_reg->pim_io_addr_start);
+        writel(0x0, &app_reg->pim_io_addr_start);
+        writel(0x0, &app_reg->pim_rom_addr_start);
+
+        writel(DEVICE_TYPE_EP | (1 << MISCTRL_EN_ID)
+                        | ((u32)1 << REG_TRANSLATION_ENABLE),
+                        &app_reg->app_ctrl_0);
+        /* disable all rx interrupts */
+        writel(0, &app_reg->int_mask);
+
+        /* Select INTA as default*/
+        spear_dbi_write_reg(config, PCI_INTERRUPT_LINE, 1, 1);
+}
+
+static int __devinit spear_pcie_gadget_probe(struct platform_device *pdev)
+{
+        struct resource *res0, *res1;
+        unsigned int status = 0;
+        int irq;
+        struct clk *clk;
+        static struct pcie_gadget_target *target;
+        struct spear_pcie_gadget_config *config;
+        struct config_item              *cg_item;
+        struct configfs_subsystem *subsys;
+
+        /* get resource for application registers*/
+
+        res0 = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res0) {
+                dev_err(&pdev->dev, "no resource defined\n");
+                return -EBUSY;
+        }
+        if (!request_mem_region(res0->start, resource_size(res0),
+                                pdev->name)) {
+                dev_err(&pdev->dev, "pcie gadget region already claimed\n");
+                return -EBUSY;
+        }
+        /* get resource for dbi registers*/
+
+        res1 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+        if (!res1) {
+                dev_err(&pdev->dev, "no resource defined\n");
+                goto err_rel_res0;
+        }
+        if (!request_mem_region(res1->start, resource_size(res1),
+                                pdev->name)) {
+                dev_err(&pdev->dev, "pcie gadget region already claimed\n");
+                goto err_rel_res0;
+        }
+
+        target = kzalloc(sizeof(*target), GFP_KERNEL);
+        if (!target) {
+                dev_err(&pdev->dev, "out of memory\n");
+                status = -ENOMEM;
+                goto err_rel_res;
+        }
+
+        cg_item = &target->subsys.su_group.cg_item;
+        sprintf(cg_item->ci_namebuf, "pcie_gadget.%d", pdev->id);
+        cg_item->ci_type        = &pcie_gadget_target_type;
+        config = &target->config;
+        config->va_app_base = (void __iomem *)ioremap(res0->start,
+                        resource_size(res0));
+        if (!config->va_app_base) {
+                dev_err(&pdev->dev, "ioremap fail\n");
+                status = -ENOMEM;
+                goto err_kzalloc;
+        }
+
+        config->base = (void __iomem *)res1->start;
+
+        config->va_dbi_base = (void __iomem *)ioremap(res1->start,
+                        resource_size(res1));
+        if (!config->va_dbi_base) {
+                dev_err(&pdev->dev, "ioremap fail\n");
+                status = -ENOMEM;
+                goto err_iounmap_app;
+        }
+
+        dev_set_drvdata(&pdev->dev, target);
+
+        irq = platform_get_irq(pdev, 0);
+        if (irq < 0) {
+                dev_err(&pdev->dev, "no update irq?\n");
+                status = irq;
+                goto err_iounmap;
+        }
+
+        status = request_irq(irq, spear_pcie_gadget_irq, 0, pdev->name, NULL);
+        if (status) {
+                dev_err(&pdev->dev, "pcie gadget interrupt IRQ%d already \
+                                claimed\n", irq);
+                goto err_iounmap;
+        }
+
+        /* Register configfs hooks */
+        subsys = &target->subsys;
+        config_group_init(&subsys->su_group);
+        mutex_init(&subsys->su_mutex);
+        status = configfs_register_subsystem(subsys);
+        if (status)
+                goto err_irq;
+
+        /*
+         * init basic pcie application registers
+         * do not enable clock if it is PCIE0.Ideally , all controller should
+         * have been independent from others with respect to clock. But PCIE1
+         * and 2 depends on PCIE0.So PCIE0 clk is provided during board init.
+         */
+        if (pdev->id == 1) {
+                /*
+                 * Ideally CFG Clock should have been also enabled here. But
+                 * it is done currently during board init routne
+                 */
+                clk = clk_get_sys("pcie1", NULL);
+                if (IS_ERR(clk)) {
+                        pr_err("%s:couldn't get clk for pcie1\n", __func__);
+                        goto err_irq;
+                }
+                if (clk_enable(clk)) {
+                        pr_err("%s:couldn't enable clk for pcie1\n", __func__);
+                        goto err_irq;
+                }
+        } else if (pdev->id == 2) {
+                /*
+                 * Ideally CFG Clock should have been also enabled here. But
+                 * it is done currently during board init routne
+                 */
+                clk = clk_get_sys("pcie2", NULL);
+                if (IS_ERR(clk)) {
+                        pr_err("%s:couldn't get clk for pcie2\n", __func__);
+                        goto err_irq;
+                }
+                if (clk_enable(clk)) {
+                        pr_err("%s:couldn't enable clk for pcie2\n", __func__);
+                        goto err_irq;
+                }
+        }
+        spear13xx_pcie_device_init(config);
+
+        return 0;
+err_irq:
+        free_irq(irq, NULL);
+err_iounmap:
+        iounmap(config->va_dbi_base);
+err_iounmap_app:
+        iounmap(config->va_app_base);
+err_kzalloc:
+        kfree(config);
+err_rel_res:
+        release_mem_region(res1->start, resource_size(res1));
+err_rel_res0:
+        release_mem_region(res0->start, resource_size(res0));
+        return status;
+}
+
+static int __devexit spear_pcie_gadget_remove(struct platform_device *pdev)
+{
+        struct resource *res0, *res1;
+        static struct pcie_gadget_target *target;
+        struct spear_pcie_gadget_config *config;
+        int irq;
+
+        res0 = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        res1 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+        irq = platform_get_irq(pdev, 0);
+        target = dev_get_drvdata(&pdev->dev);
+        config = &target->config;
+
+        free_irq(irq, NULL);
+        iounmap(config->va_dbi_base);
+        iounmap(config->va_app_base);
+        release_mem_region(res1->start, resource_size(res1));
+        release_mem_region(res0->start, resource_size(res0));
+        configfs_unregister_subsystem(&target->subsys);
+        kfree(target);
+
+        return 0;
+}
+
+static void spear_pcie_gadget_shutdown(struct platform_device *pdev)
+{
+}
+
+static struct platform_driver spear_pcie_gadget_driver = {
+        .probe = spear_pcie_gadget_probe,
+        .remove = spear_pcie_gadget_remove,
+        .shutdown = spear_pcie_gadget_shutdown,
+        .driver = {
+                .name = "pcie-gadget-spear",
+                .bus = &platform_bus_type
+        },
+};
+
+static int __init spear_pcie_gadget_init(void)
+{
+        return platform_driver_register(&spear_pcie_gadget_driver);
+}
+module_init(spear_pcie_gadget_init);
+
+static void __exit spear_pcie_gadget_exit(void)
+{
+        platform_driver_unregister(&spear_pcie_gadget_driver);
+}
+module_exit(spear_pcie_gadget_exit);
+
+MODULE_ALIAS("pcie-gadget-spear");
+MODULE_AUTHOR("Pratyush Anand");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 379d2ffe4c87..2e032f0e8cf4 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -1417,7 +1417,7 @@ static int __init mmc_omap_probe(struct platform_device *pdev)
         if (res == NULL || irq < 0)
                 return -ENXIO;
 
-        res = request_mem_region(res->start, res->end - res->start + 1,
+        res = request_mem_region(res->start, resource_size(res),
                                  pdev->name);
         if (res == NULL)
                 return -EBUSY;
@@ -1457,7 +1457,7 @@ static int __init mmc_omap_probe(struct platform_device *pdev)
 
         host->irq = irq;
         host->phys_base = host->mem_res->start;
-        host->virt_base = ioremap(res->start, res->end - res->start + 1);
+        host->virt_base = ioremap(res->start, resource_size(res));
         if (!host->virt_base)
                 goto err_ioremap;
 
@@ -1514,7 +1514,7 @@ err_free_mmc_host:
 err_ioremap:
         kfree(host);
 err_free_mem_region:
-        release_mem_region(res->start, res->end - res->start + 1);
+        release_mem_region(res->start, resource_size(res));
         return ret;
 }
 
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 158c0ee53b2c..259ece047afc 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -2047,8 +2047,7 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 
         res->start += pdata->reg_offset;
         res->end += pdata->reg_offset;
-        res = request_mem_region(res->start, res->end - res->start + 1,
-                                                        pdev->name);
+        res = request_mem_region(res->start, resource_size(res), pdev->name);
         if (res == NULL)
                 return -EBUSY;
 
@@ -2287,7 +2286,7 @@ err1:
 err_alloc:
         omap_hsmmc_gpio_free(pdata);
 err:
-        release_mem_region(res->start, res->end - res->start + 1);
+        release_mem_region(res->start, resource_size(res));
         return ret;
 }
 
@@ -2324,7 +2323,7 @@ static int omap_hsmmc_remove(struct platform_device *pdev)
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (res)
-                release_mem_region(res->start, res->end - res->start + 1);
+                release_mem_region(res->start, resource_size(res));
         platform_set_drvdata(pdev, NULL);
 
         return 0;
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 1a6e9eb7af43..338bea147c64 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -2130,7 +2130,7 @@ int bond_release(struct net_device *bond_dev, struct net_device *slave_dev)
 }
 
 /*
-* First release a slave and than destroy the bond if no more slaves are left.
+* First release a slave and then destroy the bond if no more slaves are left.
 * Must be under rtnl_lock when this function is called.
 */
 static int  bond_release_and_destroy(struct net_device *bond_dev,
diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c
index 14050786218a..110eda01843c 100644
--- a/drivers/net/can/c_can/c_can.c
+++ b/drivers/net/can/c_can/c_can.c
@@ -633,9 +633,6 @@ static void c_can_start(struct net_device *dev)
 {
         struct c_can_priv *priv = netdev_priv(dev);
 
-        /* enable status change, error and module interrupts */
-        c_can_enable_all_interrupts(priv, ENABLE_ALL_INTERRUPTS);
-
         /* basic c_can configuration */
         c_can_chip_config(dev);
 
@@ -643,6 +640,9 @@ static void c_can_start(struct net_device *dev)
 
         /* reset tx helper pointers */
         priv->tx_next = priv->tx_echo = 0;
+
+        /* enable status change, error and module interrupts */
+        c_can_enable_all_interrupts(priv, ENABLE_ALL_INTERRUPTS);
 }
 
 static void c_can_stop(struct net_device *dev)
diff --git a/drivers/net/ftmac100.c b/drivers/net/ftmac100.c
index 1d6f4b8d393a..a31661948c42 100644
--- a/drivers/net/ftmac100.c
+++ b/drivers/net/ftmac100.c
@@ -1102,7 +1102,7 @@ static int ftmac100_probe(struct platform_device *pdev)
                 goto err_req_mem;
         }
 
-        priv->base = ioremap(res->start, res->end - res->start);
+        priv->base = ioremap(res->start, resource_size(res));
         if (!priv->base) {
                 dev_err(&pdev->dev, "Failed to ioremap ethernet registers\n");
                 err = -EIO;
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index ccb231c4d933..2a0ad9a501bb 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -949,6 +949,11 @@ static void gfar_detect_errata(struct gfar_private *priv)
                         (pvr == 0x80861010 && (mod & 0xfff9) == 0x80c0))
                 priv->errata |= GFAR_ERRATA_A002;
 
+        /* MPC8313 Rev < 2.0, MPC8548 rev 2.0 */
+        if ((pvr == 0x80850010 && mod == 0x80b0 && rev < 0x0020) ||
+                        (pvr == 0x80210020 && mod == 0x8030 && rev == 0x0020))
+                priv->errata |= GFAR_ERRATA_12;
+
         if (priv->errata)
                 dev_info(dev, "enabled errata workarounds, flags: 0x%x\n",
                          priv->errata);
@@ -2154,8 +2159,15 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
         /* Set up checksumming */
         if (CHECKSUM_PARTIAL == skb->ip_summed) {
                 fcb = gfar_add_fcb(skb);
-                lstatus |= BD_LFLAG(TXBD_TOE);
-                gfar_tx_checksum(skb, fcb);
+                /* as specified by errata */
+                if (unlikely(gfar_has_errata(priv, GFAR_ERRATA_12)
+                             && ((unsigned long)fcb % 0x20) > 0x18)) {
+                        __skb_pull(skb, GMAC_FCB_LEN);
+                        skb_checksum_help(skb);
+                } else {
+                        lstatus |= BD_LFLAG(TXBD_TOE);
+                        gfar_tx_checksum(skb, fcb);
+                }
         }
 
         if (vlan_tx_tag_present(skb)) {
diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h
index 54de4135e932..ec5d595ce2e2 100644
--- a/drivers/net/gianfar.h
+++ b/drivers/net/gianfar.h
@@ -1039,6 +1039,7 @@ enum gfar_errata {
         GFAR_ERRATA_74          = 0x01,
         GFAR_ERRATA_76          = 0x02,
         GFAR_ERRATA_A002        = 0x04,
+        GFAR_ERRATA_12          = 0x08, /* a.k.a errata eTSEC49 */
 };
 
 /* Struct stolen almost completely (and shamelessly) from the FCC enet source
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 5b37d3c191e4..78e34e9e4f00 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -39,8 +39,11 @@ struct macvlan_port {
         struct list_head        vlans;
         struct rcu_head         rcu;
         bool                    passthru;
+        int                     count;
 };
 
+static void macvlan_port_destroy(struct net_device *dev);
+
 #define macvlan_port_get_rcu(dev) \
         ((struct macvlan_port *) rcu_dereference(dev->rx_handler_data))
 #define macvlan_port_get(dev) ((struct macvlan_port *) dev->rx_handler_data)
@@ -457,8 +460,13 @@ static int macvlan_init(struct net_device *dev)
 static void macvlan_uninit(struct net_device *dev)
 {
         struct macvlan_dev *vlan = netdev_priv(dev);
+        struct macvlan_port *port = vlan->port;
 
         free_percpu(vlan->pcpu_stats);
+
+        port->count -= 1;
+        if (!port->count)
+                macvlan_port_destroy(port->dev);
 }
 
 static struct rtnl_link_stats64 *macvlan_dev_get_stats64(struct net_device *dev,
@@ -691,12 +699,13 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
                 vlan->mode = nla_get_u32(data[IFLA_MACVLAN_MODE]);
 
         if (vlan->mode == MACVLAN_MODE_PASSTHRU) {
-                if (!list_empty(&port->vlans))
+                if (port->count)
                         return -EINVAL;
                 port->passthru = true;
                 memcpy(dev->dev_addr, lowerdev->dev_addr, ETH_ALEN);
         }
 
+        port->count += 1;
         err = register_netdevice(dev);
         if (err < 0)
                 goto destroy_port;
@@ -707,7 +716,8 @@ int macvlan_common_newlink(struct net *src_net, struct net_device *dev,
         return 0;
 
 destroy_port:
-        if (list_empty(&port->vlans))
+        port->count -= 1;
+        if (!port->count)
                 macvlan_port_destroy(lowerdev);
 
         return err;
@@ -725,13 +735,9 @@ static int macvlan_newlink(struct net *src_net, struct net_device *dev,
 void macvlan_dellink(struct net_device *dev, struct list_head *head)
 {
         struct macvlan_dev *vlan = netdev_priv(dev);
-        struct macvlan_port *port = vlan->port;
 
         list_del(&vlan->list);
         unregister_netdevice_queue(dev, head);
-
-        if (list_empty(&port->vlans))
-                macvlan_port_destroy(port->dev);
 }
 EXPORT_SYMBOL_GPL(macvlan_dellink);
 
diff --git a/drivers/net/niu.c b/drivers/net/niu.c
index 40fa59e2fd5c..32678b6c6b39 100644
--- a/drivers/net/niu.c
+++ b/drivers/net/niu.c
@@ -9501,7 +9501,7 @@ static struct niu_parent * __devinit niu_new_parent(struct niu *np,
         struct niu_parent *p;
         int i;
 
-        plat_dev = platform_device_register_simple("niu", niu_parent_index,
+        plat_dev = platform_device_register_simple("niu-board", niu_parent_index,
                                                    NULL, 0);
         if (IS_ERR(plat_dev))
                 return NULL;
diff --git a/drivers/net/ppp_deflate.c b/drivers/net/ppp_deflate.c
index 43583309a65d..31e9407a0739 100644
--- a/drivers/net/ppp_deflate.c
+++ b/drivers/net/ppp_deflate.c
@@ -129,7 +129,7 @@ static void *z_comp_alloc(unsigned char *options, int opt_len)
 
         state->strm.next_in   = NULL;
         state->w_size         = w_size;
-        state->strm.workspace = vmalloc(zlib_deflate_workspacesize());
+        state->strm.workspace = vmalloc(zlib_deflate_workspacesize(-w_size, 8));
         if (state->strm.workspace == NULL)
                 goto out_free;
 
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index 105d7f0630cc..2de9b90c5f8f 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -171,7 +171,7 @@ static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev)
         if (skb->ip_summed == CHECKSUM_NONE)
                 skb->ip_summed = rcv_priv->ip_summed;
 
-        length = skb->len + ETH_HLEN;
+        length = skb->len;
         if (dev_forward_skb(rcv, skb) != NET_RX_SUCCESS)
                 goto rx_drop;
 
diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index ad3d099bf5c1..c9784705f6ac 100644
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -1031,6 +1031,7 @@ static int __devinit acer_backlight_init(struct device *dev)
         struct backlight_device *bd;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_PLATFORM;
         props.max_brightness = max_brightness;
         bd = backlight_device_register("acer-wmi", dev, NULL, &acer_bl_ops,
                                        &props);
diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index f3aa6a7fdab6..5a6f7d7575d6 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
@@ -667,6 +667,7 @@ static int asus_backlight_init(struct asus_laptop *asus)
 
         memset(&props, 0, sizeof(struct backlight_properties));
         props.max_brightness = 15;
+        props.type = BACKLIGHT_PLATFORM;
 
         bd = backlight_device_register(ASUS_LAPTOP_FILE,
                                        &asus->platform_device->dev, asus,
diff --git a/drivers/platform/x86/asus_acpi.c b/drivers/platform/x86/asus_acpi.c
index fe495939c307..f503607c0645 100644
--- a/drivers/platform/x86/asus_acpi.c
+++ b/drivers/platform/x86/asus_acpi.c
@@ -1507,6 +1507,7 @@ static int __init asus_acpi_init(void)
         }
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_PLATFORM;
         props.max_brightness = 15;
         asus_backlight_device = backlight_device_register("asus", NULL, NULL,
                                                           &asus_backlight_data,
diff --git a/drivers/platform/x86/classmate-laptop.c b/drivers/platform/x86/classmate-laptop.c
index 911135425224..94f93b621d7b 100644
--- a/drivers/platform/x86/classmate-laptop.c
+++ b/drivers/platform/x86/classmate-laptop.c
@@ -564,6 +564,7 @@ static int cmpc_ipml_add(struct acpi_device *acpi)
                 return -ENOMEM;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_PLATFORM;
         props.max_brightness = 7;
         ipml->bd = backlight_device_register("cmpc_bl", &acpi->dev,
                                              acpi->handle, &cmpc_bl_ops,
diff --git a/drivers/platform/x86/compal-laptop.c b/drivers/platform/x86/compal-laptop.c
index 034572b980c9..eb95878fa583 100644
--- a/drivers/platform/x86/compal-laptop.c
+++ b/drivers/platform/x86/compal-laptop.c
@@ -970,6 +970,7 @@ static int __init compal_init(void)
         if (!acpi_video_backlight_support()) {
                 struct backlight_properties props;
                 memset(&props, 0, sizeof(struct backlight_properties));
+                props.type = BACKLIGHT_PLATFORM;
                 props.max_brightness = BACKLIGHT_LEVEL_MAX;
                 compalbl_device = backlight_device_register(DRIVER_NAME,
                                                             NULL, NULL,
diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index ad24ef36f9f7..de301aa8e5c3 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -671,6 +671,7 @@ static int __init dell_init(void)
         if (max_intensity) {
                 struct backlight_properties props;
                 memset(&props, 0, sizeof(struct backlight_properties));
+                props.type = BACKLIGHT_PLATFORM;
                 props.max_brightness = max_intensity;
                 dell_backlight_device = backlight_device_register("dell_backlight",
                                                                   &platform_device->dev,
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 49d9ad708f89..6605beac0d0e 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -1147,6 +1147,7 @@ static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
         struct backlight_device *bd;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_PLATFORM;
         props.max_brightness = 15;
         bd = backlight_device_register(EEEPC_LAPTOP_FILE,
                                        &eeepc->platform_device->dev, eeepc,
diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index 95e3b0948e9c..493054c2dbe1 100644
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -1128,6 +1128,7 @@ static int __init fujitsu_init(void)
 
                 memset(&props, 0, sizeof(struct backlight_properties));
                 max_brightness = fujitsu->max_brightness;
+                props.type = BACKLIGHT_PLATFORM;
                 props.max_brightness = max_brightness - 1;
                 fujitsu->bl_device = backlight_device_register("fujitsu-laptop",
                                                                NULL, NULL,
diff --git a/drivers/platform/x86/msi-laptop.c b/drivers/platform/x86/msi-laptop.c
index 7e9bb6df9d39..142d38579314 100644
--- a/drivers/platform/x86/msi-laptop.c
+++ b/drivers/platform/x86/msi-laptop.c
@@ -804,6 +804,7 @@ static int __init msi_init(void)
         } else {
                 struct backlight_properties props;
                 memset(&props, 0, sizeof(struct backlight_properties));
+                props.type = BACKLIGHT_PLATFORM;
                 props.max_brightness = MSI_LCD_LEVEL_MAX - 1;
                 msibl_device = backlight_device_register("msi-laptop-bl", NULL,
                                                          NULL, &msibl_ops,
diff --git a/drivers/platform/x86/msi-wmi.c b/drivers/platform/x86/msi-wmi.c
index 35278ad7e628..d5419c9ec07a 100644
--- a/drivers/platform/x86/msi-wmi.c
+++ b/drivers/platform/x86/msi-wmi.c
@@ -254,6 +254,7 @@ static int __init msi_wmi_init(void)
         if (!acpi_video_backlight_support()) {
                 struct backlight_properties props;
                 memset(&props, 0, sizeof(struct backlight_properties));
+                props.type = BACKLIGHT_PLATFORM;
                 props.max_brightness = ARRAY_SIZE(backlight_map) - 1;
                 backlight = backlight_device_register(DRV_NAME, NULL, NULL,
                                                       &msi_backlight_ops,
diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c
index cc1e0ba104d7..05be30ee158b 100644
--- a/drivers/platform/x86/panasonic-laptop.c
+++ b/drivers/platform/x86/panasonic-laptop.c
@@ -602,6 +602,7 @@ static int acpi_pcc_hotkey_add(struct acpi_device *device)
         }
         /* initialize backlight */
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_PLATFORM;
         props.max_brightness = pcc->sinf[SINF_AC_MAX_BRIGHT];
         pcc->backlight = backlight_device_register("panasonic", NULL, pcc,
                                                    &pcc_backlight_ops, &props);
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index 5e83370b0812..13d8d63bcca9 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -1305,8 +1305,9 @@ static int sony_nc_add(struct acpi_device *device)
                        "controlled by ACPI video driver\n");
         } else if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT",
                                                 &handle))) {
-                                                        struct backlight_properties props;
+                struct backlight_properties props;
                 memset(&props, 0, sizeof(struct backlight_properties));
+                props.type = BACKLIGHT_PLATFORM;
                 props.max_brightness = SONY_MAX_BRIGHTNESS - 1;
                 sony_backlight_device = backlight_device_register("sony", NULL,
                                                                   NULL,
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index eb9922385ef8..947bdcaa0ce9 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -6307,6 +6307,7 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
                 return 1;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_PLATFORM;
         props.max_brightness = bright_maxlvl;
         props.brightness = b & TP_EC_BACKLIGHT_LVLMSK;
         ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME,
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index 209cced786c6..63f42a22e102 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -1018,6 +1018,7 @@ static int __init toshiba_acpi_init(void)
                 create_toshiba_proc_entries();
         }
 
+        props.type = BACKLIGHT_PLATFORM;
         props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
         toshiba_backlight_device = backlight_device_register("toshiba",
                                                              &toshiba_acpi.p_dev->dev,
diff --git a/drivers/pnp/base.h b/drivers/pnp/base.h
index 19bc73695475..fa4e0a5db3f8 100644
--- a/drivers/pnp/base.h
+++ b/drivers/pnp/base.h
@@ -142,7 +142,9 @@ void __pnp_remove_device(struct pnp_dev *dev);
 int pnp_check_port(struct pnp_dev *dev, struct resource *res);
 int pnp_check_mem(struct pnp_dev *dev, struct resource *res);
 int pnp_check_irq(struct pnp_dev *dev, struct resource *res);
+#ifdef CONFIG_ISA_DMA_API
 int pnp_check_dma(struct pnp_dev *dev, struct resource *res);
+#endif
 
 char *pnp_resource_type_name(struct resource *res);
 void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc);
diff --git a/drivers/pnp/manager.c b/drivers/pnp/manager.c
index 0a15664eef1c..ed9ce507149a 100644
--- a/drivers/pnp/manager.c
+++ b/drivers/pnp/manager.c
@@ -171,6 +171,7 @@ __add:
         return 0;
 }
 
+#ifdef CONFIG_ISA_DMA_API
 static int pnp_assign_dma(struct pnp_dev *dev, struct pnp_dma *rule, int idx)
 {
         struct resource *res, local_res;
@@ -210,6 +211,7 @@ __add:
         pnp_add_dma_resource(dev, res->start, res->flags);
         return 0;
 }
+#endif /* CONFIG_ISA_DMA_API */
 
 void pnp_init_resources(struct pnp_dev *dev)
 {
@@ -234,7 +236,8 @@ static void pnp_clean_resource_table(struct pnp_dev *dev)
 static int pnp_assign_resources(struct pnp_dev *dev, int set)
 {
         struct pnp_option *option;
-        int nport = 0, nmem = 0, nirq = 0, ndma = 0;
+        int nport = 0, nmem = 0, nirq = 0;
+        int ndma __maybe_unused = 0;
         int ret = 0;
 
         pnp_dbg(&dev->dev, "pnp_assign_resources, try dependent set %d\n", set);
@@ -256,9 +259,11 @@ static int pnp_assign_resources(struct pnp_dev *dev, int set)
                 case IORESOURCE_IRQ:
                         ret = pnp_assign_irq(dev, &option->u.irq, nirq++);
                         break;
+#ifdef CONFIG_ISA_DMA_API
                 case IORESOURCE_DMA:
                         ret = pnp_assign_dma(dev, &option->u.dma, ndma++);
                         break;
+#endif
                 default:
                         ret = -EINVAL;
                         break;
diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
index a925e6b63d72..b0ecacbe53b1 100644
--- a/drivers/pnp/resource.c
+++ b/drivers/pnp/resource.c
@@ -409,9 +409,9 @@ int pnp_check_irq(struct pnp_dev *dev, struct resource *res)
         return 1;
 }
 
+#ifdef CONFIG_ISA_DMA_API
 int pnp_check_dma(struct pnp_dev *dev, struct resource *res)
 {
-#ifndef CONFIG_IA64
         int i;
         struct pnp_dev *tdev;
         struct resource *tres;
@@ -466,11 +466,8 @@ int pnp_check_dma(struct pnp_dev *dev, struct resource *res)
         }
 
         return 1;
-#else
-        /* IA64 does not have legacy DMA */
-        return 0;
-#endif
 }
+#endif /* CONFIG_ISA_DMA_API */
 
 unsigned long pnp_resource_type(struct resource *res)
 {
diff --git a/drivers/pps/generators/pps_gen_parport.c b/drivers/pps/generators/pps_gen_parport.c
index b93af3ebb5ba..dcd39fba6ddd 100644
--- a/drivers/pps/generators/pps_gen_parport.c
+++ b/drivers/pps/generators/pps_gen_parport.c
@@ -216,11 +216,6 @@ static void parport_attach(struct parport *port)
 
         hrtimer_init(&device.timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
         device.timer.function = hrtimer_event;
-#ifdef CONFIG_PREEMPT_RT
-        /* hrtimer interrupt will run in the interrupt context with this */
-        device.timer.irqsafe = 1;
-#endif
-
         hrtimer_start(&device.timer, next_intr_time(&device), HRTIMER_MODE_ABS);
 
         return;
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 4941cade319f..e1878877399c 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -985,4 +985,14 @@ config RTC_DRV_LPC32XX
           This driver can also be buillt as a module. If so, the module
           will be called rtc-lpc32xx.
 
+config RTC_DRV_TEGRA
+        tristate "NVIDIA Tegra Internal RTC driver"
+        depends on RTC_CLASS && ARCH_TEGRA
+        help
+          If you say yes here you get support for the
+          Tegra 200 series internal RTC module.
+
+          This drive can also be built as a module. If so, the module
+          will be called rtc-tegra.
+
 endif # RTC_CLASS
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 5f6c3838dcf6..ca91c3c42e98 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -91,6 +91,7 @@ obj-$(CONFIG_RTC_DRV_STARFIRE)	+= rtc-starfire.o
 obj-$(CONFIG_RTC_DRV_STK17TA8)  += rtc-stk17ta8.o
 obj-$(CONFIG_RTC_DRV_STMP)      += rtc-stmp3xxx.o
 obj-$(CONFIG_RTC_DRV_SUN4V)     += rtc-sun4v.o
+obj-$(CONFIG_RTC_DRV_TEGRA)     += rtc-tegra.o
 obj-$(CONFIG_RTC_DRV_TEST)      += rtc-test.o
 obj-$(CONFIG_RTC_DRV_TWL4030)   += rtc-twl.o
 obj-$(CONFIG_RTC_DRV_TX4939)    += rtc-tx4939.o
diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c
index d834a63ec4b0..e6e71deb188f 100644
--- a/drivers/rtc/rtc-ds1374.c
+++ b/drivers/rtc/rtc-ds1374.c
@@ -25,6 +25,7 @@
 #include <linux/bcd.h>
 #include <linux/workqueue.h>
 #include <linux/slab.h>
+#include <linux/pm.h>
 
 #define DS1374_REG_TOD0         0x00 /* Time of Day */
 #define DS1374_REG_TOD1         0x01
@@ -409,32 +410,38 @@ static int __devexit ds1374_remove(struct i2c_client *client)
 }
 
 #ifdef CONFIG_PM
-static int ds1374_suspend(struct i2c_client *client, pm_message_t state)
+static int ds1374_suspend(struct device *dev)
 {
+        struct i2c_client *client = to_i2c_client(dev);
+
         if (client->irq >= 0 && device_may_wakeup(&client->dev))
                 enable_irq_wake(client->irq);
         return 0;
 }
 
-static int ds1374_resume(struct i2c_client *client)
+static int ds1374_resume(struct device *dev)
 {
+        struct i2c_client *client = to_i2c_client(dev);
+
         if (client->irq >= 0 && device_may_wakeup(&client->dev))
                 disable_irq_wake(client->irq);
         return 0;
 }
+
+static SIMPLE_DEV_PM_OPS(ds1374_pm, ds1374_suspend, ds1374_resume);
+
+#define DS1374_PM (&ds1374_pm)
 #else
-#define ds1374_suspend  NULL
-#define ds1374_resume   NULL
+#define DS1374_PM NULL
 #endif
 
 static struct i2c_driver ds1374_driver = {
         .driver = {
                 .name = "rtc-ds1374",
                 .owner = THIS_MODULE,
+                .pm = DS1374_PM,
         },
         .probe = ds1374_probe,
-        .suspend = ds1374_suspend,
-        .resume = ds1374_resume,
         .remove = __devexit_p(ds1374_remove),
         .id_table = ds1374_id,
 };
diff --git a/drivers/rtc/rtc-ds1511.c b/drivers/rtc/rtc-ds1511.c
index 3fffd708711f..fbabc773dded 100644
--- a/drivers/rtc/rtc-ds1511.c
+++ b/drivers/rtc/rtc-ds1511.c
@@ -468,7 +468,7 @@ ds1511_nvram_write(struct file *filp, struct kobject *kobj,
 static struct bin_attribute ds1511_nvram_attr = {
         .attr = {
                 .name = "nvram",
-                .mode = S_IRUGO | S_IWUGO,
+                .mode = S_IRUGO | S_IWUSR,
         },
         .size = DS1511_RAM_MAX,
         .read = ds1511_nvram_read,
diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c
index 468200c38ecb..da8beb8cae51 100644
--- a/drivers/rtc/rtc-isl1208.c
+++ b/drivers/rtc/rtc-isl1208.c
@@ -39,6 +39,8 @@
 #define ISL1208_REG_SR_BAT     (1<<1)   /* battery */
 #define ISL1208_REG_SR_RTCF    (1<<0)   /* rtc fail */
 #define ISL1208_REG_INT 0x08
+#define ISL1208_REG_INT_ALME   (1<<6)   /* alarm enable */
+#define ISL1208_REG_INT_IM     (1<<7)   /* interrupt/alarm mode */
 #define ISL1208_REG_09  0x09    /* reserved */
 #define ISL1208_REG_ATR 0x0a
 #define ISL1208_REG_DTR 0x0b
@@ -202,6 +204,30 @@ isl1208_i2c_set_usr(struct i2c_client *client, u16 usr)
 }
 
 static int
+isl1208_rtc_toggle_alarm(struct i2c_client *client, int enable)
+{
+        int icr = i2c_smbus_read_byte_data(client, ISL1208_REG_INT);
+
+        if (icr < 0) {
+                dev_err(&client->dev, "%s: reading INT failed\n", __func__);
+                return icr;
+        }
+
+        if (enable)
+                icr |= ISL1208_REG_INT_ALME | ISL1208_REG_INT_IM;
+        else
+                icr &= ~(ISL1208_REG_INT_ALME | ISL1208_REG_INT_IM);
+
+        icr = i2c_smbus_write_byte_data(client, ISL1208_REG_INT, icr);
+        if (icr < 0) {
+                dev_err(&client->dev, "%s: writing INT failed\n", __func__);
+                return icr;
+        }
+
+        return 0;
+}
+
+static int
 isl1208_rtc_proc(struct device *dev, struct seq_file *seq)
 {
         struct i2c_client *const client = to_i2c_client(dev);
@@ -288,9 +314,8 @@ isl1208_i2c_read_alarm(struct i2c_client *client, struct rtc_wkalrm *alarm)
 {
         struct rtc_time *const tm = &alarm->time;
         u8 regs[ISL1208_ALARM_SECTION_LEN] = { 0, };
-        int sr;
+        int icr, yr, sr = isl1208_i2c_get_sr(client);
 
-        sr = isl1208_i2c_get_sr(client);
         if (sr < 0) {
                 dev_err(&client->dev, "%s: reading SR failed\n", __func__);
                 return sr;
@@ -313,6 +338,73 @@ isl1208_i2c_read_alarm(struct i2c_client *client, struct rtc_wkalrm *alarm)
                 bcd2bin(regs[ISL1208_REG_MOA - ISL1208_REG_SCA] & 0x1f) - 1;
         tm->tm_wday = bcd2bin(regs[ISL1208_REG_DWA - ISL1208_REG_SCA] & 0x03);
 
+        /* The alarm doesn't store the year so get it from the rtc section */
+        yr = i2c_smbus_read_byte_data(client, ISL1208_REG_YR);
+        if (yr < 0) {
+                dev_err(&client->dev, "%s: reading RTC YR failed\n", __func__);
+                return yr;
+        }
+        tm->tm_year = bcd2bin(yr) + 100;
+
+        icr = i2c_smbus_read_byte_data(client, ISL1208_REG_INT);
+        if (icr < 0) {
+                dev_err(&client->dev, "%s: reading INT failed\n", __func__);
+                return icr;
+        }
+        alarm->enabled = !!(icr & ISL1208_REG_INT_ALME);
+
+        return 0;
+}
+
+static int
+isl1208_i2c_set_alarm(struct i2c_client *client, struct rtc_wkalrm *alarm)
+{
+        struct rtc_time *alarm_tm = &alarm->time;
+        u8 regs[ISL1208_ALARM_SECTION_LEN] = { 0, };
+        const int offs = ISL1208_REG_SCA;
+        unsigned long rtc_secs, alarm_secs;
+        struct rtc_time rtc_tm;
+        int err, enable;
+
+        err = isl1208_i2c_read_time(client, &rtc_tm);
+        if (err)
+                return err;
+        err = rtc_tm_to_time(&rtc_tm, &rtc_secs);
+        if (err)
+                return err;
+        err = rtc_tm_to_time(alarm_tm, &alarm_secs);
+        if (err)
+                return err;
+
+        /* If the alarm time is before the current time disable the alarm */
+        if (!alarm->enabled || alarm_secs <= rtc_secs)
+                enable = 0x00;
+        else
+                enable = 0x80;
+
+        /* Program the alarm and enable it for each setting */
+        regs[ISL1208_REG_SCA - offs] = bin2bcd(alarm_tm->tm_sec) | enable;
+        regs[ISL1208_REG_MNA - offs] = bin2bcd(alarm_tm->tm_min) | enable;
+        regs[ISL1208_REG_HRA - offs] = bin2bcd(alarm_tm->tm_hour) |
+                ISL1208_REG_HR_MIL | enable;
+
+        regs[ISL1208_REG_DTA - offs] = bin2bcd(alarm_tm->tm_mday) | enable;
+        regs[ISL1208_REG_MOA - offs] = bin2bcd(alarm_tm->tm_mon + 1) | enable;
+        regs[ISL1208_REG_DWA - offs] = bin2bcd(alarm_tm->tm_wday & 7) | enable;
+
+        /* write ALARM registers */
+        err = isl1208_i2c_set_regs(client, offs, regs,
+                                  ISL1208_ALARM_SECTION_LEN);
+        if (err < 0) {
+                dev_err(&client->dev, "%s: writing ALARM section failed\n",
+                        __func__);
+                return err;
+        }
+
+        err = isl1208_rtc_toggle_alarm(client, enable);
+        if (err)
+                return err;
+
         return 0;
 }
 
@@ -391,12 +483,63 @@ isl1208_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
         return isl1208_i2c_read_alarm(to_i2c_client(dev), alarm);
 }
 
+static int
+isl1208_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+        return isl1208_i2c_set_alarm(to_i2c_client(dev), alarm);
+}
+
+static irqreturn_t
+isl1208_rtc_interrupt(int irq, void *data)
+{
+        unsigned long timeout = jiffies + msecs_to_jiffies(1000);
+        struct i2c_client *client = data;
+        int handled = 0, sr, err;
+
+        /*
+         * I2C reads get NAK'ed if we read straight away after an interrupt?
+         * Using a mdelay/msleep didn't seem to help either, so we work around
+         * this by continually trying to read the register for a short time.
+         */
+        while (1) {
+                sr = isl1208_i2c_get_sr(client);
+                if (sr >= 0)
+                        break;
+
+                if (time_after(jiffies, timeout)) {
+                        dev_err(&client->dev, "%s: reading SR failed\n",
+                                __func__);
+                        return sr;
+                }
+        }
+
+        if (sr & ISL1208_REG_SR_ALM) {
+                dev_dbg(&client->dev, "alarm!\n");
+
+                /* Clear the alarm */
+                sr &= ~ISL1208_REG_SR_ALM;
+                sr = i2c_smbus_write_byte_data(client, ISL1208_REG_SR, sr);
+                if (sr < 0)
+                        dev_err(&client->dev, "%s: writing SR failed\n",
+                                __func__);
+                else
+                        handled = 1;
+
+                /* Disable the alarm */
+                err = isl1208_rtc_toggle_alarm(client, 0);
+                if (err)
+                        return err;
+        }
+
+        return handled ? IRQ_HANDLED : IRQ_NONE;
+}
+
 static const struct rtc_class_ops isl1208_rtc_ops = {
         .proc = isl1208_rtc_proc,
         .read_time = isl1208_rtc_read_time,
         .set_time = isl1208_rtc_set_time,
         .read_alarm = isl1208_rtc_read_alarm,
-        /*.set_alarm    = isl1208_rtc_set_alarm, */
+        .set_alarm = isl1208_rtc_set_alarm,
 };
 
 /* sysfs interface */
@@ -488,11 +631,29 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
         dev_info(&client->dev,
                  "chip found, driver version " DRV_VERSION "\n");
 
+        if (client->irq > 0) {
+                rc = request_threaded_irq(client->irq, NULL,
+                                          isl1208_rtc_interrupt,
+                                          IRQF_SHARED,
+                                          isl1208_driver.driver.name, client);
+                if (!rc) {
+                        device_init_wakeup(&client->dev, 1);
+                        enable_irq_wake(client->irq);
+                } else {
+                        dev_err(&client->dev,
+                                "Unable to request irq %d, no alarm support\n",
+                                client->irq);
+                        client->irq = 0;
+                }
+        }
+
         rtc = rtc_device_register(isl1208_driver.driver.name,
                                   &client->dev, &isl1208_rtc_ops,
                                   THIS_MODULE);
-        if (IS_ERR(rtc))
-                return PTR_ERR(rtc);
+        if (IS_ERR(rtc)) {
+                rc = PTR_ERR(rtc);
+                goto exit_free_irq;
+        }
 
         i2c_set_clientdata(client, rtc);
 
@@ -514,6 +675,9 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
 
 exit_unregister:
         rtc_device_unregister(rtc);
+exit_free_irq:
+        if (client->irq)
+                free_irq(client->irq, client);
 
         return rc;
 }
@@ -525,6 +689,8 @@ isl1208_remove(struct i2c_client *client)
 
         sysfs_remove_group(&client->dev.kobj, &isl1208_rtc_sysfs_files);
         rtc_device_unregister(rtc);
+        if (client->irq)
+                free_irq(client->irq, client);
 
         return 0;
 }
diff --git a/drivers/rtc/rtc-tegra.c b/drivers/rtc/rtc-tegra.c
new file mode 100644
index 000000000000..2fc31aac3f4e
--- /dev/null
+++ b/drivers/rtc/rtc-tegra.c
@@ -0,0 +1,488 @@
+/*
+ * An RTC driver for the NVIDIA Tegra 200 series internal RTC.
+ *
+ * Copyright (c) 2010, NVIDIA Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/rtc.h>
+#include <linux/platform_device.h>
+
+/* set to 1 = busy every eight 32kHz clocks during copy of sec+msec to AHB */
+#define TEGRA_RTC_REG_BUSY                      0x004
+#define TEGRA_RTC_REG_SECONDS                   0x008
+/* when msec is read, the seconds are buffered into shadow seconds. */
+#define TEGRA_RTC_REG_SHADOW_SECONDS            0x00c
+#define TEGRA_RTC_REG_MILLI_SECONDS             0x010
+#define TEGRA_RTC_REG_SECONDS_ALARM0            0x014
+#define TEGRA_RTC_REG_SECONDS_ALARM1            0x018
+#define TEGRA_RTC_REG_MILLI_SECONDS_ALARM0      0x01c
+#define TEGRA_RTC_REG_INTR_MASK                 0x028
+/* write 1 bits to clear status bits */
+#define TEGRA_RTC_REG_INTR_STATUS               0x02c
+
+/* bits in INTR_MASK */
+#define TEGRA_RTC_INTR_MASK_MSEC_CDN_ALARM      (1<<4)
+#define TEGRA_RTC_INTR_MASK_SEC_CDN_ALARM       (1<<3)
+#define TEGRA_RTC_INTR_MASK_MSEC_ALARM          (1<<2)
+#define TEGRA_RTC_INTR_MASK_SEC_ALARM1          (1<<1)
+#define TEGRA_RTC_INTR_MASK_SEC_ALARM0          (1<<0)
+
+/* bits in INTR_STATUS */
+#define TEGRA_RTC_INTR_STATUS_MSEC_CDN_ALARM    (1<<4)
+#define TEGRA_RTC_INTR_STATUS_SEC_CDN_ALARM     (1<<3)
+#define TEGRA_RTC_INTR_STATUS_MSEC_ALARM        (1<<2)
+#define TEGRA_RTC_INTR_STATUS_SEC_ALARM1        (1<<1)
+#define TEGRA_RTC_INTR_STATUS_SEC_ALARM0        (1<<0)
+
+struct tegra_rtc_info {
+        struct platform_device  *pdev;
+        struct rtc_device       *rtc_dev;
+        void __iomem            *rtc_base; /* NULL if not initialized. */
+        int                     tegra_rtc_irq; /* alarm and periodic irq */
+        spinlock_t              tegra_rtc_lock;
+};
+
+/* RTC hardware is busy when it is updating its values over AHB once
+ * every eight 32kHz clocks (~250uS).
+ * outside of these updates the CPU is free to write.
+ * CPU is always free to read.
+ */
+static inline u32 tegra_rtc_check_busy(struct tegra_rtc_info *info)
+{
+        return readl(info->rtc_base + TEGRA_RTC_REG_BUSY) & 1;
+}
+
+/* Wait for hardware to be ready for writing.
+ * This function tries to maximize the amount of time before the next update.
+ * It does this by waiting for the RTC to become busy with its periodic update,
+ * then returning once the RTC first becomes not busy.
+ * This periodic update (where the seconds and milliseconds are copied to the
+ * AHB side) occurs every eight 32kHz clocks (~250uS).
+ * The behavior of this function allows us to make some assumptions without
+ * introducing a race, because 250uS is plenty of time to read/write a value.
+ */
+static int tegra_rtc_wait_while_busy(struct device *dev)
+{
+        struct tegra_rtc_info *info = dev_get_drvdata(dev);
+
+        int retries = 500; /* ~490 us is the worst case, ~250 us is best. */
+
+        /* first wait for the RTC to become busy. this is when it
+         * posts its updated seconds+msec registers to AHB side. */
+        while (tegra_rtc_check_busy(info)) {
+                if (!retries--)
+                        goto retry_failed;
+                udelay(1);
+        }
+
+        /* now we have about 250 us to manipulate registers */
+        return 0;
+
+retry_failed:
+        dev_err(dev, "write failed:retry count exceeded.\n");
+        return -ETIMEDOUT;
+}
+
+static int tegra_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+        struct tegra_rtc_info *info = dev_get_drvdata(dev);
+        unsigned long sec, msec;
+        unsigned long sl_irq_flags;
+
+        /* RTC hardware copies seconds to shadow seconds when a read
+         * of milliseconds occurs. use a lock to keep other threads out. */
+        spin_lock_irqsave(&info->tegra_rtc_lock, sl_irq_flags);
+
+        msec = readl(info->rtc_base + TEGRA_RTC_REG_MILLI_SECONDS);
+        sec = readl(info->rtc_base + TEGRA_RTC_REG_SHADOW_SECONDS);
+
+        spin_unlock_irqrestore(&info->tegra_rtc_lock, sl_irq_flags);
+
+        rtc_time_to_tm(sec, tm);
+
+        dev_vdbg(dev, "time read as %lu. %d/%d/%d %d:%02u:%02u\n",
+                sec,
+                tm->tm_mon + 1,
+                tm->tm_mday,
+                tm->tm_year + 1900,
+                tm->tm_hour,
+                tm->tm_min,
+                tm->tm_sec
+        );
+
+        return 0;
+}
+
+static int tegra_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+        struct tegra_rtc_info *info = dev_get_drvdata(dev);
+        unsigned long sec;
+        int ret;
+
+        /* convert tm to seconds. */
+        ret = rtc_valid_tm(tm);
+        if (ret)
+                return ret;
+
+        rtc_tm_to_time(tm, &sec);
+
+        dev_vdbg(dev, "time set to %lu. %d/%d/%d %d:%02u:%02u\n",
+                sec,
+                tm->tm_mon+1,
+                tm->tm_mday,
+                tm->tm_year+1900,
+                tm->tm_hour,
+                tm->tm_min,
+                tm->tm_sec
+        );
+
+        /* seconds only written if wait succeeded. */
+        ret = tegra_rtc_wait_while_busy(dev);
+        if (!ret)
+                writel(sec, info->rtc_base + TEGRA_RTC_REG_SECONDS);
+
+        dev_vdbg(dev, "time read back as %d\n",
+                readl(info->rtc_base + TEGRA_RTC_REG_SECONDS));
+
+        return ret;
+}
+
+static int tegra_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+        struct tegra_rtc_info *info = dev_get_drvdata(dev);
+        unsigned long sec;
+        unsigned tmp;
+
+        sec = readl(info->rtc_base + TEGRA_RTC_REG_SECONDS_ALARM0);
+
+        if (sec == 0) {
+                /* alarm is disabled. */
+                alarm->enabled = 0;
+                alarm->time.tm_mon = -1;
+                alarm->time.tm_mday = -1;
+                alarm->time.tm_year = -1;
+                alarm->time.tm_hour = -1;
+                alarm->time.tm_min = -1;
+                alarm->time.tm_sec = -1;
+        } else {
+                /* alarm is enabled. */
+                alarm->enabled = 1;
+                rtc_time_to_tm(sec, &alarm->time);
+        }
+
+        tmp = readl(info->rtc_base + TEGRA_RTC_REG_INTR_STATUS);
+        alarm->pending = (tmp & TEGRA_RTC_INTR_STATUS_SEC_ALARM0) != 0;
+
+        return 0;
+}
+
+static int tegra_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+        struct tegra_rtc_info *info = dev_get_drvdata(dev);
+        unsigned status;
+        unsigned long sl_irq_flags;
+
+        tegra_rtc_wait_while_busy(dev);
+        spin_lock_irqsave(&info->tegra_rtc_lock, sl_irq_flags);
+
+        /* read the original value, and OR in the flag. */
+        status = readl(info->rtc_base + TEGRA_RTC_REG_INTR_MASK);
+        if (enabled)
+                status |= TEGRA_RTC_INTR_MASK_SEC_ALARM0; /* set it */
+        else
+                status &= ~TEGRA_RTC_INTR_MASK_SEC_ALARM0; /* clear it */
+
+        writel(status, info->rtc_base + TEGRA_RTC_REG_INTR_MASK);
+
+        spin_unlock_irqrestore(&info->tegra_rtc_lock, sl_irq_flags);
+
+        return 0;
+}
+
+static int tegra_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+        struct tegra_rtc_info *info = dev_get_drvdata(dev);
+        unsigned long sec;
+
+        if (alarm->enabled)
+                rtc_tm_to_time(&alarm->time, &sec);
+        else
+                sec = 0;
+
+        tegra_rtc_wait_while_busy(dev);
+        writel(sec, info->rtc_base + TEGRA_RTC_REG_SECONDS_ALARM0);
+        dev_vdbg(dev, "alarm read back as %d\n",
+                readl(info->rtc_base + TEGRA_RTC_REG_SECONDS_ALARM0));
+
+        /* if successfully written and alarm is enabled ... */
+        if (sec) {
+                tegra_rtc_alarm_irq_enable(dev, 1);
+
+                dev_vdbg(dev, "alarm set as %lu. %d/%d/%d %d:%02u:%02u\n",
+                        sec,
+                        alarm->time.tm_mon+1,
+                        alarm->time.tm_mday,
+                        alarm->time.tm_year+1900,
+                        alarm->time.tm_hour,
+                        alarm->time.tm_min,
+                        alarm->time.tm_sec);
+        } else {
+                /* disable alarm if 0 or write error. */
+                dev_vdbg(dev, "alarm disabled\n");
+                tegra_rtc_alarm_irq_enable(dev, 0);
+        }
+
+        return 0;
+}
+
+static int tegra_rtc_proc(struct device *dev, struct seq_file *seq)
+{
+        if (!dev || !dev->driver)
+                return 0;
+
+        return seq_printf(seq, "name\t\t: %s\n", dev_name(dev));
+}
+
+static irqreturn_t tegra_rtc_irq_handler(int irq, void *data)
+{
+        struct device *dev = data;
+        struct tegra_rtc_info *info = dev_get_drvdata(dev);
+        unsigned long events = 0;
+        unsigned status;
+        unsigned long sl_irq_flags;
+
+        status = readl(info->rtc_base + TEGRA_RTC_REG_INTR_STATUS);
+        if (status) {
+                /* clear the interrupt masks and status on any irq. */
+                tegra_rtc_wait_while_busy(dev);
+                spin_lock_irqsave(&info->tegra_rtc_lock, sl_irq_flags);
+                writel(0, info->rtc_base + TEGRA_RTC_REG_INTR_MASK);
+                writel(status, info->rtc_base + TEGRA_RTC_REG_INTR_STATUS);
+                spin_unlock_irqrestore(&info->tegra_rtc_lock, sl_irq_flags);
+        }
+
+        /* check if Alarm */
+        if ((status & TEGRA_RTC_INTR_STATUS_SEC_ALARM0))
+                events |= RTC_IRQF | RTC_AF;
+
+        /* check if Periodic */
+        if ((status & TEGRA_RTC_INTR_STATUS_SEC_CDN_ALARM))
+                events |= RTC_IRQF | RTC_PF;
+
+        rtc_update_irq(info->rtc_dev, 1, events);
+
+        return IRQ_HANDLED;
+}
+
+static struct rtc_class_ops tegra_rtc_ops = {
+        .read_time      = tegra_rtc_read_time,
+        .set_time       = tegra_rtc_set_time,
+        .read_alarm     = tegra_rtc_read_alarm,
+        .set_alarm      = tegra_rtc_set_alarm,
+        .proc           = tegra_rtc_proc,
+        .alarm_irq_enable = tegra_rtc_alarm_irq_enable,
+};
+
+static int __devinit tegra_rtc_probe(struct platform_device *pdev)
+{
+        struct tegra_rtc_info *info;
+        struct resource *res;
+        int ret;
+
+        info = kzalloc(sizeof(struct tegra_rtc_info), GFP_KERNEL);
+        if (!info)
+                return -ENOMEM;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res) {
+                dev_err(&pdev->dev,
+                        "Unable to allocate resources for device.\n");
+                ret = -EBUSY;
+                goto err_free_info;
+        }
+
+        if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
+                dev_err(&pdev->dev,
+                        "Unable to request mem region for device.\n");
+                ret = -EBUSY;
+                goto err_free_info;
+        }
+
+        info->tegra_rtc_irq = platform_get_irq(pdev, 0);
+        if (info->tegra_rtc_irq <= 0) {
+                ret = -EBUSY;
+                goto err_release_mem_region;
+        }
+
+        info->rtc_base = ioremap_nocache(res->start, resource_size(res));
+        if (!info->rtc_base) {
+                dev_err(&pdev->dev, "Unable to grab IOs for device.\n");
+                ret = -EBUSY;
+                goto err_release_mem_region;
+        }
+
+        /* set context info. */
+        info->pdev = pdev;
+        info->tegra_rtc_lock = __SPIN_LOCK_UNLOCKED(info->tegra_rtc_lock);
+
+        platform_set_drvdata(pdev, info);
+
+        /* clear out the hardware. */
+        writel(0, info->rtc_base + TEGRA_RTC_REG_SECONDS_ALARM0);
+        writel(0xffffffff, info->rtc_base + TEGRA_RTC_REG_INTR_STATUS);
+        writel(0, info->rtc_base + TEGRA_RTC_REG_INTR_MASK);
+
+        device_init_wakeup(&pdev->dev, 1);
+
+        info->rtc_dev = rtc_device_register(
+                pdev->name, &pdev->dev, &tegra_rtc_ops, THIS_MODULE);
+        if (IS_ERR(info->rtc_dev)) {
+                ret = PTR_ERR(info->rtc_dev);
+                info->rtc_dev = NULL;
+                dev_err(&pdev->dev,
+                        "Unable to register device (err=%d).\n",
+                        ret);
+                goto err_iounmap;
+        }
+
+        ret = request_irq(info->tegra_rtc_irq, tegra_rtc_irq_handler,
+                IRQF_TRIGGER_HIGH, "rtc alarm", &pdev->dev);
+        if (ret) {
+                dev_err(&pdev->dev,
+                        "Unable to request interrupt for device (err=%d).\n",
+                        ret);
+                goto err_dev_unreg;
+        }
+
+        dev_notice(&pdev->dev, "Tegra internal Real Time Clock\n");
+
+        return 0;
+
+err_dev_unreg:
+        rtc_device_unregister(info->rtc_dev);
+err_iounmap:
+        iounmap(info->rtc_base);
+err_release_mem_region:
+        release_mem_region(res->start, resource_size(res));
+err_free_info:
+        kfree(info);
+
+        return ret;
+}
+
+static int __devexit tegra_rtc_remove(struct platform_device *pdev)
+{
+        struct tegra_rtc_info *info = platform_get_drvdata(pdev);
+        struct resource *res;
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res)
+                return -EBUSY;
+
+        free_irq(info->tegra_rtc_irq, &pdev->dev);
+        rtc_device_unregister(info->rtc_dev);
+        iounmap(info->rtc_base);
+        release_mem_region(res->start, resource_size(res));
+        kfree(info);
+
+        platform_set_drvdata(pdev, NULL);
+
+        return 0;
+}
+
+#ifdef CONFIG_PM
+static int tegra_rtc_suspend(struct platform_device *pdev, pm_message_t state)
+{
+        struct device *dev = &pdev->dev;
+        struct tegra_rtc_info *info = platform_get_drvdata(pdev);
+
+        tegra_rtc_wait_while_busy(dev);
+
+        /* only use ALARM0 as a wake source. */
+        writel(0xffffffff, info->rtc_base + TEGRA_RTC_REG_INTR_STATUS);
+        writel(TEGRA_RTC_INTR_STATUS_SEC_ALARM0,
+                info->rtc_base + TEGRA_RTC_REG_INTR_MASK);
+
+        dev_vdbg(dev, "alarm sec = %d\n",
+                readl(info->rtc_base + TEGRA_RTC_REG_SECONDS_ALARM0));
+
+        dev_vdbg(dev, "Suspend (device_may_wakeup=%d) irq:%d\n",
+                device_may_wakeup(dev), info->tegra_rtc_irq);
+
+        /* leave the alarms on as a wake source. */
+        if (device_may_wakeup(dev))
+                enable_irq_wake(info->tegra_rtc_irq);
+
+        return 0;
+}
+
+static int tegra_rtc_resume(struct platform_device *pdev)
+{
+        struct device *dev = &pdev->dev;
+        struct tegra_rtc_info *info = platform_get_drvdata(pdev);
+
+        dev_vdbg(dev, "Resume (device_may_wakeup=%d)\n",
+                device_may_wakeup(dev));
+        /* alarms were left on as a wake source, turn them off. */
+        if (device_may_wakeup(dev))
+                disable_irq_wake(info->tegra_rtc_irq);
+
+        return 0;
+}
+#endif
+
+static void tegra_rtc_shutdown(struct platform_device *pdev)
+{
+        dev_vdbg(&pdev->dev, "disabling interrupts.\n");
+        tegra_rtc_alarm_irq_enable(&pdev->dev, 0);
+}
+
+MODULE_ALIAS("platform:tegra_rtc");
+static struct platform_driver tegra_rtc_driver = {
+        .remove         = __devexit_p(tegra_rtc_remove),
+        .shutdown       = tegra_rtc_shutdown,
+        .driver         = {
+                .name   = "tegra_rtc",
+                .owner  = THIS_MODULE,
+        },
+#ifdef CONFIG_PM
+        .suspend        = tegra_rtc_suspend,
+        .resume         = tegra_rtc_resume,
+#endif
+};
+
+static int __init tegra_rtc_init(void)
+{
+        return platform_driver_probe(&tegra_rtc_driver, tegra_rtc_probe);
+}
+module_init(tegra_rtc_init);
+
+static void __exit tegra_rtc_exit(void)
+{
+        platform_driver_unregister(&tegra_rtc_driver);
+}
+module_exit(tegra_rtc_exit);
+
+MODULE_AUTHOR("Jon Mayo <jmayo@nvidia.com>");
+MODULE_DESCRIPTION("driver for Tegra internal RTC");
+MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 3be5db5d6343..7ff61d76b4c5 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -597,6 +597,7 @@ static int scsi_setup_discard_cmnd(struct scsi_device *sdp, struct request *rq)
                 break;
 
         default:
+                ret = BLKPREP_KILL;
                 goto out;
         }
 
diff --git a/drivers/staging/olpc_dcon/olpc_dcon.c b/drivers/staging/olpc_dcon/olpc_dcon.c
index b90c2cf3e247..750fe5045efa 100644
--- a/drivers/staging/olpc_dcon/olpc_dcon.c
+++ b/drivers/staging/olpc_dcon/olpc_dcon.c
@@ -574,6 +574,7 @@ static const struct backlight_ops dcon_bl_ops = {
 
 static struct backlight_properties dcon_bl_props = {
         .max_brightness = 15,
+        .type = BACKLIGHT_RAW,
         .power = FB_BLANK_UNBLANK,
 };
 
diff --git a/drivers/staging/samsung-laptop/samsung-laptop.c b/drivers/staging/samsung-laptop/samsung-laptop.c
index 6607a89ccb4b..25294462b8b6 100644
--- a/drivers/staging/samsung-laptop/samsung-laptop.c
+++ b/drivers/staging/samsung-laptop/samsung-laptop.c
@@ -781,6 +781,7 @@ static int __init samsung_init(void)
 
         /* create a backlight device to talk to this one */
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_PLATFORM;
         props.max_brightness = sabi_config->max_brightness;
         backlight_device = backlight_device_register("samsung", &sdev->dev,
                                                      NULL, &backlight_ops,
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index d8210ca00720..b9451219528b 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -322,7 +322,7 @@ void tty_schedule_flip(struct tty_struct *tty)
         if (tty->buf.tail != NULL)
                 tty->buf.tail->commit = tty->buf.tail->used;
         spin_unlock_irqrestore(&tty->buf.lock, flags);
-        schedule_delayed_work(&tty->buf.work, 1);
+        schedule_work(&tty->buf.work);
 }
 EXPORT_SYMBOL(tty_schedule_flip);
 
@@ -402,7 +402,7 @@ EXPORT_SYMBOL_GPL(tty_prepare_flip_string_flags);
 static void flush_to_ldisc(struct work_struct *work)
 {
         struct tty_struct *tty =
-                container_of(work, struct tty_struct, buf.work.work);
+                container_of(work, struct tty_struct, buf.work);
         unsigned long   flags;
         struct tty_ldisc *disc;
 
@@ -443,7 +443,7 @@ static void flush_to_ldisc(struct work_struct *work)
                         if (test_bit(TTY_FLUSHPENDING, &tty->flags))
                                 break;
                         if (!tty->receive_room || seen_tail) {
-                                schedule_delayed_work(&tty->buf.work, 1);
+                                schedule_work(&tty->buf.work);
                                 break;
                         }
                         if (count > tty->receive_room)
@@ -481,7 +481,7 @@ static void flush_to_ldisc(struct work_struct *work)
  */
 void tty_flush_to_ldisc(struct tty_struct *tty)
 {
-        flush_delayed_work(&tty->buf.work);
+        flush_work(&tty->buf.work);
 }
 
 /**
@@ -506,9 +506,9 @@ void tty_flip_buffer_push(struct tty_struct *tty)
         spin_unlock_irqrestore(&tty->buf.lock, flags);
 
         if (tty->low_latency)
-                flush_to_ldisc(&tty->buf.work.work);
+                flush_to_ldisc(&tty->buf.work);
         else
-                schedule_delayed_work(&tty->buf.work, 1);
+                schedule_work(&tty->buf.work);
 }
 EXPORT_SYMBOL(tty_flip_buffer_push);
 
@@ -529,6 +529,6 @@ void tty_buffer_init(struct tty_struct *tty)
         tty->buf.tail = NULL;
         tty->buf.free = NULL;
         tty->buf.memory_used = 0;
-        INIT_DELAYED_WORK(&tty->buf.work, flush_to_ldisc);
+        INIT_WORK(&tty->buf.work, flush_to_ldisc);
 }
 
diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
index 0fc564a97706..e19e13647116 100644
--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -529,7 +529,7 @@ static void tty_ldisc_restore(struct tty_struct *tty, struct tty_ldisc *old)
 static int tty_ldisc_halt(struct tty_struct *tty)
 {
         clear_bit(TTY_LDISC, &tty->flags);
-        return cancel_delayed_work_sync(&tty->buf.work);
+        return cancel_work_sync(&tty->buf.work);
 }
 
 /**
@@ -542,7 +542,7 @@ static void tty_ldisc_flush_works(struct tty_struct *tty)
 {
         flush_work_sync(&tty->hangup_work);
         flush_work_sync(&tty->SAK_work);
-        flush_delayed_work_sync(&tty->buf.work);
+        flush_work_sync(&tty->buf.work);
 }
 
 /**
@@ -722,9 +722,9 @@ enable:
         /* Restart the work queue in case no characters kick it off. Safe if
            already running */
         if (work)
-                schedule_delayed_work(&tty->buf.work, 1);
+                schedule_work(&tty->buf.work);
         if (o_work)
-                schedule_delayed_work(&o_tty->buf.work, 1);
+                schedule_work(&o_tty->buf.work);
         mutex_unlock(&tty->ldisc_mutex);
         tty_unlock();
         return retval;
@@ -830,12 +830,12 @@ void tty_ldisc_hangup(struct tty_struct *tty)
 
         /*
          * this is like tty_ldisc_halt, but we need to give up
-         * the BTM before calling cancel_delayed_work_sync,
-         * which may need to wait for another function taking the BTM
+         * the BTM before calling cancel_work_sync, which may
+         * need to wait for another function taking the BTM
          */
         clear_bit(TTY_LDISC, &tty->flags);
         tty_unlock();
-        cancel_delayed_work_sync(&tty->buf.work);
+        cancel_work_sync(&tty->buf.work);
         mutex_unlock(&tty->ldisc_mutex);
 
         tty_lock();
diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c
index 1fa6ce3e4a23..68ab460a735c 100644
--- a/drivers/usb/misc/appledisplay.c
+++ b/drivers/usb/misc/appledisplay.c
@@ -282,6 +282,7 @@ static int appledisplay_probe(struct usb_interface *iface,
         snprintf(bl_name, sizeof(bl_name), "appledisplay%d",
                 atomic_inc_return(&count_displays) - 1);
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = 0xff;
         pdata->bd = backlight_device_register(bl_name, NULL, pdata,
                                               &appledisplay_bl_data, &props);
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index f616cefc95ba..2f7c76a85e53 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -60,6 +60,7 @@ static int move_iovec_hdr(struct iovec *from, struct iovec *to,
 {
         int seg = 0;
         size_t size;
+
         while (len && seg < iov_count) {
                 size = min(from->iov_len, len);
                 to->iov_base = from->iov_base;
@@ -79,6 +80,7 @@ static void copy_iovec_hdr(const struct iovec *from, struct iovec *to,
 {
         int seg = 0;
         size_t size;
+
         while (len && seg < iovcount) {
                 size = min(from->iov_len, len);
                 to->iov_base = from->iov_base;
@@ -211,12 +213,13 @@ static int peek_head_len(struct sock *sk)
 {
         struct sk_buff *head;
         int len = 0;
+        unsigned long flags;
 
-        lock_sock(sk);
+        spin_lock_irqsave(&sk->sk_receive_queue.lock, flags);
         head = skb_peek(&sk->sk_receive_queue);
-        if (head)
+        if (likely(head))
                 len = head->len;
-        release_sock(sk);
+        spin_unlock_irqrestore(&sk->sk_receive_queue.lock, flags);
         return len;
 }
 
@@ -227,6 +230,7 @@ static int peek_head_len(struct sock *sk)
  * @iovcount    - returned count of io vectors we fill
  * @log         - vhost log
  * @log_num     - log offset
+ * @quota       - headcount quota, 1 for big buffer
  *      returns number of buffer heads allocated, negative on error
  */
 static int get_rx_bufs(struct vhost_virtqueue *vq,
@@ -234,7 +238,8 @@ static int get_rx_bufs(struct vhost_virtqueue *vq,
                        int datalen,
                        unsigned *iovcount,
                        struct vhost_log *log,
-                       unsigned *log_num)
+                       unsigned *log_num,
+                       unsigned int quota)
 {
         unsigned int out, in;
         int seg = 0;
@@ -242,7 +247,7 @@ static int get_rx_bufs(struct vhost_virtqueue *vq,
         unsigned d;
         int r, nlogs = 0;
 
-        while (datalen > 0) {
+        while (datalen > 0 && headcount < quota) {
                 if (unlikely(seg >= UIO_MAXIOV)) {
                         r = -ENOBUFS;
                         goto err;
@@ -282,117 +287,7 @@ err:
 
 /* Expects to be always run from workqueue - which acts as
  * read-size critical section for our kind of RCU. */
-static void handle_rx_big(struct vhost_net *net)
-{
-        struct vhost_virtqueue *vq = &net->dev.vqs[VHOST_NET_VQ_RX];
-        unsigned out, in, log, s;
-        int head;
-        struct vhost_log *vq_log;
-        struct msghdr msg = {
-                .msg_name = NULL,
-                .msg_namelen = 0,
-                .msg_control = NULL, /* FIXME: get and handle RX aux data. */
-                .msg_controllen = 0,
-                .msg_iov = vq->iov,
-                .msg_flags = MSG_DONTWAIT,
-        };
-
-        struct virtio_net_hdr hdr = {
-                .flags = 0,
-                .gso_type = VIRTIO_NET_HDR_GSO_NONE
-        };
-
-        size_t len, total_len = 0;
-        int err;
-        size_t hdr_size;
-        /* TODO: check that we are running from vhost_worker? */
-        struct socket *sock = rcu_dereference_check(vq->private_data, 1);
-        if (!sock || skb_queue_empty(&sock->sk->sk_receive_queue))
-                return;
-
-        mutex_lock(&vq->mutex);
-        vhost_disable_notify(vq);
-        hdr_size = vq->vhost_hlen;
-
-        vq_log = unlikely(vhost_has_feature(&net->dev, VHOST_F_LOG_ALL)) ?
-                vq->log : NULL;
-
-        for (;;) {
-                head = vhost_get_vq_desc(&net->dev, vq, vq->iov,
-                                         ARRAY_SIZE(vq->iov),
-                                         &out, &in,
-                                         vq_log, &log);
-                /* On error, stop handling until the next kick. */
-                if (unlikely(head < 0))
-                        break;
-                /* OK, now we need to know about added descriptors. */
-                if (head == vq->num) {
-                        if (unlikely(vhost_enable_notify(vq))) {
-                                /* They have slipped one in as we were
-                                 * doing that: check again. */
-                                vhost_disable_notify(vq);
-                                continue;
-                        }
-                        /* Nothing new?  Wait for eventfd to tell us
-                         * they refilled. */
-                        break;
-                }
-                /* We don't need to be notified again. */
-                if (out) {
-                        vq_err(vq, "Unexpected descriptor format for RX: "
-                               "out %d, int %d\n",
-                               out, in);
-                        break;
-                }
-                /* Skip header. TODO: support TSO/mergeable rx buffers. */
-                s = move_iovec_hdr(vq->iov, vq->hdr, hdr_size, in);
-                msg.msg_iovlen = in;
-                len = iov_length(vq->iov, in);
-                /* Sanity check */
-                if (!len) {
-                        vq_err(vq, "Unexpected header len for RX: "
-                               "%zd expected %zd\n",
-                               iov_length(vq->hdr, s), hdr_size);
-                        break;
-                }
-                err = sock->ops->recvmsg(NULL, sock, &msg,
-                                         len, MSG_DONTWAIT | MSG_TRUNC);
-                /* TODO: Check specific error and bomb out unless EAGAIN? */
-                if (err < 0) {
-                        vhost_discard_vq_desc(vq, 1);
-                        break;
-                }
-                /* TODO: Should check and handle checksum. */
-                if (err > len) {
-                        pr_debug("Discarded truncated rx packet: "
-                                 " len %d > %zd\n", err, len);
-                        vhost_discard_vq_desc(vq, 1);
-                        continue;
-                }
-                len = err;
-                err = memcpy_toiovec(vq->hdr, (unsigned char *)&hdr, hdr_size);
-                if (err) {
-                        vq_err(vq, "Unable to write vnet_hdr at addr %p: %d\n",
-                               vq->iov->iov_base, err);
-                        break;
-                }
-                len += hdr_size;
-                vhost_add_used_and_signal(&net->dev, vq, head, len);
-                if (unlikely(vq_log))
-                        vhost_log_write(vq, vq_log, log, len);
-                total_len += len;
-                if (unlikely(total_len >= VHOST_NET_WEIGHT)) {
-                        vhost_poll_queue(&vq->poll);
-                        break;
-                }
-        }
-
-        mutex_unlock(&vq->mutex);
-}
-
-/* Expects to be always run from workqueue - which acts as
- * read-size critical section for our kind of RCU. */
-static void handle_rx_mergeable(struct vhost_net *net)
+static void handle_rx(struct vhost_net *net)
 {
         struct vhost_virtqueue *vq = &net->dev.vqs[VHOST_NET_VQ_RX];
         unsigned uninitialized_var(in), log;
@@ -405,19 +300,18 @@ static void handle_rx_mergeable(struct vhost_net *net)
                 .msg_iov = vq->iov,
                 .msg_flags = MSG_DONTWAIT,
         };
-
         struct virtio_net_hdr_mrg_rxbuf hdr = {
                 .hdr.flags = 0,
                 .hdr.gso_type = VIRTIO_NET_HDR_GSO_NONE
         };
-
         size_t total_len = 0;
-        int err, headcount;
+        int err, headcount, mergeable;
         size_t vhost_hlen, sock_hlen;
         size_t vhost_len, sock_len;
         /* TODO: check that we are running from vhost_worker? */
         struct socket *sock = rcu_dereference_check(vq->private_data, 1);
-        if (!sock || skb_queue_empty(&sock->sk->sk_receive_queue))
+
+        if (!sock)
                 return;
 
         mutex_lock(&vq->mutex);
@@ -427,12 +321,14 @@ static void handle_rx_mergeable(struct vhost_net *net)
 
         vq_log = unlikely(vhost_has_feature(&net->dev, VHOST_F_LOG_ALL)) ?
                 vq->log : NULL;
+        mergeable = vhost_has_feature(&net->dev, VIRTIO_NET_F_MRG_RXBUF);
 
         while ((sock_len = peek_head_len(sock->sk))) {
                 sock_len += sock_hlen;
                 vhost_len = sock_len + vhost_hlen;
                 headcount = get_rx_bufs(vq, vq->heads, vhost_len,
-                                        &in, vq_log, &log);
+                                        &in, vq_log, &log,
+                                        likely(mergeable) ? UIO_MAXIOV : 1);
                 /* On error, stop handling until the next kick. */
                 if (unlikely(headcount < 0))
                         break;
@@ -476,7 +372,7 @@ static void handle_rx_mergeable(struct vhost_net *net)
                         break;
                 }
                 /* TODO: Should check and handle checksum. */
-                if (vhost_has_feature(&net->dev, VIRTIO_NET_F_MRG_RXBUF) &&
+                if (likely(mergeable) &&
                     memcpy_toiovecend(vq->hdr, (unsigned char *)&headcount,
                                       offsetof(typeof(hdr), num_buffers),
                                       sizeof hdr.num_buffers)) {
@@ -498,14 +394,6 @@ static void handle_rx_mergeable(struct vhost_net *net)
         mutex_unlock(&vq->mutex);
 }
 
-static void handle_rx(struct vhost_net *net)
-{
-        if (vhost_has_feature(&net->dev, VIRTIO_NET_F_MRG_RXBUF))
-                handle_rx_mergeable(net);
-        else
-                handle_rx_big(net);
-}
-
 static void handle_tx_kick(struct vhost_work *work)
 {
         struct vhost_virtqueue *vq = container_of(work, struct vhost_virtqueue,
@@ -654,6 +542,7 @@ static struct socket *get_raw_socket(int fd)
         } uaddr;
         int uaddr_len = sizeof uaddr, r;
         struct socket *sock = sockfd_lookup(fd, &r);
+
         if (!sock)
                 return ERR_PTR(-ENOTSOCK);
 
@@ -682,6 +571,7 @@ static struct socket *get_tap_socket(int fd)
 {
         struct file *file = fget(fd);
         struct socket *sock;
+
         if (!file)
                 return ERR_PTR(-EBADF);
         sock = tun_get_socket(file);
@@ -696,6 +586,7 @@ static struct socket *get_tap_socket(int fd)
 static struct socket *get_socket(int fd)
 {
         struct socket *sock;
+
         /* special case to disable backend */
         if (fd == -1)
                 return NULL;
@@ -741,9 +632,9 @@ static long vhost_net_set_backend(struct vhost_net *n, unsigned index, int fd)
         oldsock = rcu_dereference_protected(vq->private_data,
                                             lockdep_is_held(&vq->mutex));
         if (sock != oldsock) {
-                vhost_net_disable_vq(n, vq);
-                rcu_assign_pointer(vq->private_data, sock);
-                vhost_net_enable_vq(n, vq);
+                vhost_net_disable_vq(n, vq);
+                rcu_assign_pointer(vq->private_data, sock);
+                vhost_net_enable_vq(n, vq);
         }
 
         mutex_unlock(&vq->mutex);
@@ -768,6 +659,7 @@ static long vhost_net_reset_owner(struct vhost_net *n)
         struct socket *tx_sock = NULL;
         struct socket *rx_sock = NULL;
         long err;
+
         mutex_lock(&n->dev.mutex);
         err = vhost_dev_check_owner(&n->dev);
         if (err)
@@ -829,6 +721,7 @@ static long vhost_net_ioctl(struct file *f, unsigned int ioctl,
         struct vhost_vring_file backend;
         u64 features;
         int r;
+
         switch (ioctl) {
         case VHOST_NET_SET_BACKEND:
                 if (copy_from_user(&backend, argp, sizeof backend))
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index ade0568c07a4..2ab291241635 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -41,8 +41,8 @@ static void vhost_poll_func(struct file *file, wait_queue_head_t *wqh,
                             poll_table *pt)
 {
         struct vhost_poll *poll;
-        poll = container_of(pt, struct vhost_poll, table);
 
+        poll = container_of(pt, struct vhost_poll, table);
         poll->wqh = wqh;
         add_wait_queue(wqh, &poll->wait);
 }
@@ -85,6 +85,7 @@ void vhost_poll_init(struct vhost_poll *poll, vhost_work_fn_t fn,
 void vhost_poll_start(struct vhost_poll *poll, struct file *file)
 {
         unsigned long mask;
+
         mask = file->f_op->poll(file, &poll->table);
         if (mask)
                 vhost_poll_wakeup(&poll->wait, 0, 0, (void *)mask);
@@ -101,6 +102,7 @@ static bool vhost_work_seq_done(struct vhost_dev *dev, struct vhost_work *work,
                                 unsigned seq)
 {
         int left;
+
         spin_lock_irq(&dev->work_lock);
         left = seq - work->done_seq;
         spin_unlock_irq(&dev->work_lock);
@@ -222,6 +224,7 @@ static int vhost_worker(void *data)
 static long vhost_dev_alloc_iovecs(struct vhost_dev *dev)
 {
         int i;
+
         for (i = 0; i < dev->nvqs; ++i) {
                 dev->vqs[i].indirect = kmalloc(sizeof *dev->vqs[i].indirect *
                                                UIO_MAXIOV, GFP_KERNEL);
@@ -235,6 +238,7 @@ static long vhost_dev_alloc_iovecs(struct vhost_dev *dev)
                         goto err_nomem;
         }
         return 0;
+
 err_nomem:
         for (; i >= 0; --i) {
                 kfree(dev->vqs[i].indirect);
@@ -247,6 +251,7 @@ err_nomem:
 static void vhost_dev_free_iovecs(struct vhost_dev *dev)
 {
         int i;
+
         for (i = 0; i < dev->nvqs; ++i) {
                 kfree(dev->vqs[i].indirect);
                 dev->vqs[i].indirect = NULL;
@@ -296,26 +301,28 @@ long vhost_dev_check_owner(struct vhost_dev *dev)
 }
 
 struct vhost_attach_cgroups_struct {
-        struct vhost_work work;
-        struct task_struct *owner;
-        int ret;
+        struct vhost_work work;
+        struct task_struct *owner;
+        int ret;
 };
 
 static void vhost_attach_cgroups_work(struct vhost_work *work)
 {
-        struct vhost_attach_cgroups_struct *s;
-        s = container_of(work, struct vhost_attach_cgroups_struct, work);
-        s->ret = cgroup_attach_task_all(s->owner, current);
+        struct vhost_attach_cgroups_struct *s;
+
+        s = container_of(work, struct vhost_attach_cgroups_struct, work);
+        s->ret = cgroup_attach_task_all(s->owner, current);
 }
 
 static int vhost_attach_cgroups(struct vhost_dev *dev)
 {
-        struct vhost_attach_cgroups_struct attach;
-        attach.owner = current;
-        vhost_work_init(&attach.work, vhost_attach_cgroups_work);
-        vhost_work_queue(dev, &attach.work);
-        vhost_work_flush(dev, &attach.work);
-        return attach.ret;
+        struct vhost_attach_cgroups_struct attach;
+
+        attach.owner = current;
+        vhost_work_init(&attach.work, vhost_attach_cgroups_work);
+        vhost_work_queue(dev, &attach.work);
+        vhost_work_flush(dev, &attach.work);
+        return attach.ret;
 }
 
 /* Caller should have device mutex */
@@ -323,11 +330,13 @@ static long vhost_dev_set_owner(struct vhost_dev *dev)
 {
         struct task_struct *worker;
         int err;
+
         /* Is there an owner already? */
         if (dev->mm) {
                 err = -EBUSY;
                 goto err_mm;
         }
+
         /* No owner, become one */
         dev->mm = get_task_mm(current);
         worker = kthread_create(vhost_worker, dev, "vhost-%d", current->pid);
@@ -380,6 +389,7 @@ long vhost_dev_reset_owner(struct vhost_dev *dev)
 void vhost_dev_cleanup(struct vhost_dev *dev)
 {
         int i;
+
         for (i = 0; i < dev->nvqs; ++i) {
                 if (dev->vqs[i].kick && dev->vqs[i].handle_kick) {
                         vhost_poll_stop(&dev->vqs[i].poll);
@@ -421,6 +431,7 @@ void vhost_dev_cleanup(struct vhost_dev *dev)
 static int log_access_ok(void __user *log_base, u64 addr, unsigned long sz)
 {
         u64 a = addr / VHOST_PAGE_SIZE / 8;
+
         /* Make sure 64 bit math will not overflow. */
         if (a > ULONG_MAX - (unsigned long)log_base ||
             a + (unsigned long)log_base > ULONG_MAX)
@@ -461,6 +472,7 @@ static int memory_access_ok(struct vhost_dev *d, struct vhost_memory *mem,
                             int log_all)
 {
         int i;
+
         for (i = 0; i < d->nvqs; ++i) {
                 int ok;
                 mutex_lock(&d->vqs[i].mutex);
@@ -527,6 +539,7 @@ static long vhost_set_memory(struct vhost_dev *d, struct vhost_memory __user *m)
 {
         struct vhost_memory mem, *newmem, *oldmem;
         unsigned long size = offsetof(struct vhost_memory, regions);
+
         if (copy_from_user(&mem, m, size))
                 return -EFAULT;
         if (mem.padding)
@@ -544,7 +557,8 @@ static long vhost_set_memory(struct vhost_dev *d, struct vhost_memory __user *m)
                 return -EFAULT;
         }
 
-        if (!memory_access_ok(d, newmem, vhost_has_feature(d, VHOST_F_LOG_ALL))) {
+        if (!memory_access_ok(d, newmem,
+                              vhost_has_feature(d, VHOST_F_LOG_ALL))) {
                 kfree(newmem);
                 return -EFAULT;
         }
@@ -560,6 +574,7 @@ static int init_used(struct vhost_virtqueue *vq,
                      struct vring_used __user *used)
 {
         int r = put_user(vq->used_flags, &used->flags);
+
         if (r)
                 return r;
         return get_user(vq->last_used_idx, &used->idx);
@@ -849,6 +864,7 @@ static const struct vhost_memory_region *find_region(struct vhost_memory *mem,
 {
         struct vhost_memory_region *reg;
         int i;
+
         /* linear search is not brilliant, but we really have on the order of 6
          * regions in practice */
         for (i = 0; i < mem->nregions; ++i) {
@@ -871,6 +887,7 @@ static int set_bit_to_user(int nr, void __user *addr)
         void *base;
         int bit = nr + (log % PAGE_SIZE) * 8;
         int r;
+
         r = get_user_pages_fast(log, 1, 1, &page);
         if (r < 0)
                 return r;
@@ -888,6 +905,7 @@ static int log_write(void __user *log_base,
 {
         u64 write_page = write_address / VHOST_PAGE_SIZE;
         int r;
+
         if (!write_length)
                 return 0;
         write_length += write_address % VHOST_PAGE_SIZE;
@@ -1037,8 +1055,8 @@ static int get_indirect(struct vhost_dev *dev, struct vhost_virtqueue *vq,
                                i, count);
                         return -EINVAL;
                 }
-                if (unlikely(memcpy_fromiovec((unsigned char *)&desc, vq->indirect,
-                                              sizeof desc))) {
+                if (unlikely(memcpy_fromiovec((unsigned char *)&desc,
+                                              vq->indirect, sizeof desc))) {
                         vq_err(vq, "Failed indirect descriptor: idx %d, %zx\n",
                                i, (size_t)indirect->addr + i * sizeof desc);
                         return -EINVAL;
@@ -1153,7 +1171,7 @@ int vhost_get_vq_desc(struct vhost_dev *dev, struct vhost_virtqueue *vq,
                                i, vq->num, head);
                         return -EINVAL;
                 }
-                ret = copy_from_user(&desc, vq->desc + i, sizeof desc);
+                ret = __copy_from_user(&desc, vq->desc + i, sizeof desc);
                 if (unlikely(ret)) {
                         vq_err(vq, "Failed to get descriptor: idx %d addr %p\n",
                                i, vq->desc + i);
@@ -1317,6 +1335,7 @@ int vhost_add_used_n(struct vhost_virtqueue *vq, struct vring_used_elem *heads,
 void vhost_signal(struct vhost_dev *dev, struct vhost_virtqueue *vq)
 {
         __u16 flags;
+
         /* Flush out used index updates. This is paired
          * with the barrier that the Guest executes when enabling
          * interrupts. */
@@ -1361,6 +1380,7 @@ bool vhost_enable_notify(struct vhost_virtqueue *vq)
 {
         u16 avail_idx;
         int r;
+
         if (!(vq->used_flags & VRING_USED_F_NO_NOTIFY))
                 return false;
         vq->used_flags &= ~VRING_USED_F_NO_NOTIFY;
@@ -1387,6 +1407,7 @@ bool vhost_enable_notify(struct vhost_virtqueue *vq)
 void vhost_disable_notify(struct vhost_virtqueue *vq)
 {
         int r;
+
         if (vq->used_flags & VRING_USED_F_NO_NOTIFY)
                 return;
         vq->used_flags |= VRING_USED_F_NO_NOTIFY;
diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index bac163450216..4b4e8dadd6b2 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -127,6 +127,7 @@ static void init_backlight(struct atmel_lcdfb_info *sinfo)
                 return;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = 0xff;
         bl = backlight_device_register("backlight", &sinfo->pdev->dev, sinfo,
                                        &atmel_lcdc_bl_ops, &props);
diff --git a/drivers/video/aty/aty128fb.c b/drivers/video/aty/aty128fb.c
index 4cb6a576c567..b0b2ac335347 100644
--- a/drivers/video/aty/aty128fb.c
+++ b/drivers/video/aty/aty128fb.c
@@ -1818,6 +1818,7 @@ static void aty128_bl_init(struct aty128fb_par *par)
         snprintf(name, sizeof(name), "aty128bl%d", info->node);
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = FB_BACKLIGHT_LEVELS - 1;
         bd = backlight_device_register(name, info->dev, par, &aty128_bl_data,
                                        &props);
diff --git a/drivers/video/aty/atyfb_base.c b/drivers/video/aty/atyfb_base.c
index 94e293fce1d2..d437b3daf1f5 100644
--- a/drivers/video/aty/atyfb_base.c
+++ b/drivers/video/aty/atyfb_base.c
@@ -2241,6 +2241,7 @@ static void aty_bl_init(struct atyfb_par *par)
         snprintf(name, sizeof(name), "atybl%d", info->node);
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = FB_BACKLIGHT_LEVELS - 1;
         bd = backlight_device_register(name, info->dev, par, &aty_bl_data,
                                        &props);
diff --git a/drivers/video/aty/radeon_backlight.c b/drivers/video/aty/radeon_backlight.c
index 9b811ddbce83..db572df7e1ef 100644
--- a/drivers/video/aty/radeon_backlight.c
+++ b/drivers/video/aty/radeon_backlight.c
@@ -158,6 +158,7 @@ void radeonfb_bl_init(struct radeonfb_info *rinfo)
         snprintf(name, sizeof(name), "radeonbl%d", rinfo->info->node);
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = FB_BACKLIGHT_LEVELS - 1;
         bd = backlight_device_register(name, rinfo->info->dev, pdata,
                                        &radeon_bl_data, &props);
diff --git a/drivers/video/backlight/88pm860x_bl.c b/drivers/video/backlight/88pm860x_bl.c
index b224396b86d5..e59623a15f3f 100644
--- a/drivers/video/backlight/88pm860x_bl.c
+++ b/drivers/video/backlight/88pm860x_bl.c
@@ -227,6 +227,7 @@ static int pm860x_backlight_probe(struct platform_device *pdev)
         }
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = MAX_BRIGHTNESS;
         bl = backlight_device_register(name, &pdev->dev, data,
                                         &pm860x_backlight_ops, &props);
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index e54a337227ea..0c9373bedd1f 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -109,6 +109,14 @@ config LCD_S6E63M0
           If you have an S6E63M0 LCD Panel, say Y to enable its
           LCD control driver.
 
+config LCD_LD9040
+        tristate "LD9040 AMOLED LCD Driver"
+        depends on SPI && BACKLIGHT_CLASS_DEVICE
+        default n
+        help
+          If you have an LD9040 Panel, say Y to enable its
+          control driver.
+
 endif # LCD_CLASS_DEVICE
 
 #
@@ -236,12 +244,12 @@ config BACKLIGHT_MAX8925
           If you have a LCD backlight connected to the WLED output of MAX8925
           WLED output, say Y here to enable this driver.
 
-config BACKLIGHT_MBP_NVIDIA
-       tristate "MacBook Pro Nvidia Backlight Driver"
-       depends on X86
+config BACKLIGHT_APPLE
+       tristate "Apple Backlight Driver"
+       depends on X86 && ACPI
        help
-         If you have an Apple Macbook Pro with Nvidia graphics hardware say Y
-         to enable a driver for its backlight
+         If you have an Intel-based Apple say Y to enable a driver for its
+         backlight.
 
 config BACKLIGHT_TOSA
         tristate "Sharp SL-6000 Backlight Driver"
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index 44c0f81ad85d..b9ca8490df87 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_LCD_VGG2432A4)	   += vgg2432a4.o
 obj-$(CONFIG_LCD_TDO24M)           += tdo24m.o
 obj-$(CONFIG_LCD_TOSA)             += tosa_lcd.o
 obj-$(CONFIG_LCD_S6E63M0)       += s6e63m0.o
+obj-$(CONFIG_LCD_LD9040)        += ld9040.o
 
 obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o
 obj-$(CONFIG_BACKLIGHT_ATMEL_PWM)    += atmel-pwm-bl.o
@@ -26,7 +27,7 @@ obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o
 obj-$(CONFIG_BACKLIGHT_PWM)     += pwm_bl.o
 obj-$(CONFIG_BACKLIGHT_DA903X)  += da903x_bl.o
 obj-$(CONFIG_BACKLIGHT_MAX8925) += max8925_bl.o
-obj-$(CONFIG_BACKLIGHT_MBP_NVIDIA) += mbp_nvidia_bl.o
+obj-$(CONFIG_BACKLIGHT_APPLE)   += apple_bl.o
 obj-$(CONFIG_BACKLIGHT_TOSA)    += tosa_bl.o
 obj-$(CONFIG_BACKLIGHT_SAHARA)  += kb3886_bl.o
 obj-$(CONFIG_BACKLIGHT_WM831X)  += wm831x_bl.o
diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c
index 9f436e014f85..af3119707dbf 100644
--- a/drivers/video/backlight/adp5520_bl.c
+++ b/drivers/video/backlight/adp5520_bl.c
@@ -303,6 +303,7 @@ static int __devinit adp5520_bl_probe(struct platform_device *pdev)
         mutex_init(&data->lock);
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = ADP5020_MAX_BRIGHTNESS;
         bl = backlight_device_register(pdev->name, data->master, data,
                                        &adp5520_bl_ops, &props);
diff --git a/drivers/video/backlight/adp8860_bl.c b/drivers/video/backlight/adp8860_bl.c
index 734c650a47c4..d2a96a421ffd 100644
--- a/drivers/video/backlight/adp8860_bl.c
+++ b/drivers/video/backlight/adp8860_bl.c
@@ -709,6 +709,7 @@ static int __devinit adp8860_probe(struct i2c_client *client,
         i2c_set_clientdata(client, data);
 
         memset(&props, 0, sizeof(props));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = ADP8860_MAX_BRIGHTNESS;
 
         mutex_init(&data->lock);
diff --git a/drivers/video/backlight/adx_bl.c b/drivers/video/backlight/adx_bl.c
index fe9af129c5dd..c861c41af442 100644
--- a/drivers/video/backlight/adx_bl.c
+++ b/drivers/video/backlight/adx_bl.c
@@ -104,6 +104,7 @@ static int __devinit adx_backlight_probe(struct platform_device *pdev)
         }
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = 0xff;
         bldev = backlight_device_register(dev_name(&pdev->dev), &pdev->dev,
                                           bl, &adx_backlight_ops, &props);
diff --git a/drivers/video/backlight/apple_bl.c b/drivers/video/backlight/apple_bl.c
new file mode 100644
index 000000000000..be98d152b7fd
--- /dev/null
+++ b/drivers/video/backlight/apple_bl.c
@@ -0,0 +1,241 @@
+/*
+ *  Backlight Driver for Intel-based Apples
+ *
+ *  Copyright (c) Red Hat <mjg@redhat.com>
+ *  Based on code from Pommed:
+ *  Copyright (C) 2006 Nicolas Boichat <nicolas @boichat.ch>
+ *  Copyright (C) 2006 Felipe Alfaro Solana <felipe_alfaro @linuxmail.org>
+ *  Copyright (C) 2007 Julien BLACHE <jb@jblache.org>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This driver triggers SMIs which cause the firmware to change the
+ *  backlight brightness. This is icky in many ways, but it's impractical to
+ *  get at the firmware code in order to figure out what it's actually doing.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/backlight.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/pci.h>
+#include <linux/acpi.h>
+
+static struct backlight_device *apple_backlight_device;
+
+struct hw_data {
+        /* I/O resource to allocate. */
+        unsigned long iostart;
+        unsigned long iolen;
+        /* Backlight operations structure. */
+        const struct backlight_ops backlight_ops;
+        void (*set_brightness)(int);
+};
+
+static const struct hw_data *hw_data;
+
+#define DRIVER "apple_backlight: "
+
+/* Module parameters. */
+static int debug;
+module_param_named(debug, debug, int, 0644);
+MODULE_PARM_DESC(debug, "Set to one to enable debugging messages.");
+
+/*
+ * Implementation for machines with Intel chipset.
+ */
+static void intel_chipset_set_brightness(int intensity)
+{
+        outb(0x04 | (intensity << 4), 0xb3);
+        outb(0xbf, 0xb2);
+}
+
+static int intel_chipset_send_intensity(struct backlight_device *bd)
+{
+        int intensity = bd->props.brightness;
+
+        if (debug)
+                printk(KERN_DEBUG DRIVER "setting brightness to %d\n",
+                       intensity);
+
+        intel_chipset_set_brightness(intensity);
+        return 0;
+}
+
+static int intel_chipset_get_intensity(struct backlight_device *bd)
+{
+        int intensity;
+
+        outb(0x03, 0xb3);
+        outb(0xbf, 0xb2);
+        intensity = inb(0xb3) >> 4;
+
+        if (debug)
+                printk(KERN_DEBUG DRIVER "read brightness of %d\n",
+                       intensity);
+
+        return intensity;
+}
+
+static const struct hw_data intel_chipset_data = {
+        .iostart = 0xb2,
+        .iolen = 2,
+        .backlight_ops  = {
+                .options        = BL_CORE_SUSPENDRESUME,
+                .get_brightness = intel_chipset_get_intensity,
+                .update_status  = intel_chipset_send_intensity,
+        },
+        .set_brightness = intel_chipset_set_brightness,
+};
+
+/*
+ * Implementation for machines with Nvidia chipset.
+ */
+static void nvidia_chipset_set_brightness(int intensity)
+{
+        outb(0x04 | (intensity << 4), 0x52f);
+        outb(0xbf, 0x52e);
+}
+
+static int nvidia_chipset_send_intensity(struct backlight_device *bd)
+{
+        int intensity = bd->props.brightness;
+
+        if (debug)
+                printk(KERN_DEBUG DRIVER "setting brightness to %d\n",
+                       intensity);
+
+        nvidia_chipset_set_brightness(intensity);
+        return 0;
+}
+
+static int nvidia_chipset_get_intensity(struct backlight_device *bd)
+{
+        int intensity;
+
+        outb(0x03, 0x52f);
+        outb(0xbf, 0x52e);
+        intensity = inb(0x52f) >> 4;
+
+        if (debug)
+                printk(KERN_DEBUG DRIVER "read brightness of %d\n",
+                       intensity);
+
+        return intensity;
+}
+
+static const struct hw_data nvidia_chipset_data = {
+        .iostart = 0x52e,
+        .iolen = 2,
+        .backlight_ops          = {
+                .options        = BL_CORE_SUSPENDRESUME,
+                .get_brightness = nvidia_chipset_get_intensity,
+                .update_status  = nvidia_chipset_send_intensity
+        },
+        .set_brightness = nvidia_chipset_set_brightness,
+};
+
+static int __devinit apple_bl_add(struct acpi_device *dev)
+{
+        struct backlight_properties props;
+        struct pci_dev *host;
+        int intensity;
+
+        host = pci_get_bus_and_slot(0, 0);
+
+        if (!host) {
+                printk(KERN_ERR DRIVER "unable to find PCI host\n");
+                return -ENODEV;
+        }
+
+        if (host->vendor == PCI_VENDOR_ID_INTEL)
+                hw_data = &intel_chipset_data;
+        else if (host->vendor == PCI_VENDOR_ID_NVIDIA)
+                hw_data = &nvidia_chipset_data;
+
+        pci_dev_put(host);
+
+        if (!hw_data) {
+                printk(KERN_ERR DRIVER "unknown hardware\n");
+                return -ENODEV;
+        }
+
+        /* Check that the hardware responds - this may not work under EFI */
+
+        intensity = hw_data->backlight_ops.get_brightness(NULL);
+
+        if (!intensity) {
+                hw_data->set_brightness(1);
+                if (!hw_data->backlight_ops.get_brightness(NULL))
+                        return -ENODEV;
+
+                hw_data->set_brightness(0);
+        }
+
+        if (!request_region(hw_data->iostart, hw_data->iolen,
+                            "Apple backlight"))
+                return -ENXIO;
+
+        memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_PLATFORM;
+        props.max_brightness = 15;
+        apple_backlight_device = backlight_device_register("apple_backlight",
+                                  NULL, NULL, &hw_data->backlight_ops, &props);
+
+        if (IS_ERR(apple_backlight_device)) {
+                release_region(hw_data->iostart, hw_data->iolen);
+                return PTR_ERR(apple_backlight_device);
+        }
+
+        apple_backlight_device->props.brightness =
+                hw_data->backlight_ops.get_brightness(apple_backlight_device);
+        backlight_update_status(apple_backlight_device);
+
+        return 0;
+}
+
+static int __devexit apple_bl_remove(struct acpi_device *dev, int type)
+{
+        backlight_device_unregister(apple_backlight_device);
+
+        release_region(hw_data->iostart, hw_data->iolen);
+        hw_data = NULL;
+        return 0;
+}
+
+static const struct acpi_device_id apple_bl_ids[] = {
+        {"APP0002", 0},
+        {"", 0},
+};
+
+static struct acpi_driver apple_bl_driver = {
+        .name = "Apple backlight",
+        .ids = apple_bl_ids,
+        .ops = {
+                .add = apple_bl_add,
+                .remove = apple_bl_remove,
+        },
+};
+
+static int __init apple_bl_init(void)
+{
+        return acpi_bus_register_driver(&apple_bl_driver);
+}
+
+static void __exit apple_bl_exit(void)
+{
+        acpi_bus_unregister_driver(&apple_bl_driver);
+}
+
+module_init(apple_bl_init);
+module_exit(apple_bl_exit);
+
+MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
+MODULE_DESCRIPTION("Apple Backlight Driver");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(acpi, apple_bl_ids);
+MODULE_ALIAS("mbp_nvidia_bl");
diff --git a/drivers/video/backlight/atmel-pwm-bl.c b/drivers/video/backlight/atmel-pwm-bl.c
index e6a66dab088c..0443a4f71858 100644
--- a/drivers/video/backlight/atmel-pwm-bl.c
+++ b/drivers/video/backlight/atmel-pwm-bl.c
@@ -168,6 +168,7 @@ static int atmel_pwm_bl_probe(struct platform_device *pdev)
         }
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = pdata->pwm_duty_max - pdata->pwm_duty_min;
         bldev = backlight_device_register("atmel-pwm-bl", &pdev->dev, pwmbl,
                                           &atmel_pwm_bl_ops, &props);
diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 08703299ef61..80d292fb92d8 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -19,6 +19,12 @@
 #include <asm/backlight.h>
 #endif
 
+static const char const *backlight_types[] = {
+        [BACKLIGHT_RAW] = "raw",
+        [BACKLIGHT_PLATFORM] = "platform",
+        [BACKLIGHT_FIRMWARE] = "firmware",
+};
+
 #if defined(CONFIG_FB) || (defined(CONFIG_FB_MODULE) && \
                            defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE))
 /* This callback gets called when something important happens inside a
@@ -169,6 +175,14 @@ static ssize_t backlight_store_brightness(struct device *dev,
         return rc;
 }
 
+static ssize_t backlight_show_type(struct device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        struct backlight_device *bd = to_backlight_device(dev);
+
+        return sprintf(buf, "%s\n", backlight_types[bd->props.type]);
+}
+
 static ssize_t backlight_show_max_brightness(struct device *dev,
                 struct device_attribute *attr, char *buf)
 {
@@ -234,6 +248,7 @@ static struct device_attribute bl_device_attributes[] = {
         __ATTR(actual_brightness, 0444, backlight_show_actual_brightness,
                      NULL),
         __ATTR(max_brightness, 0444, backlight_show_max_brightness, NULL),
+        __ATTR(type, 0444, backlight_show_type, NULL),
         __ATTR_NULL,
 };
 
@@ -292,9 +307,16 @@ struct backlight_device *backlight_device_register(const char *name,
         dev_set_drvdata(&new_bd->dev, devdata);
 
         /* Set default properties */
-        if (props)
+        if (props) {
                 memcpy(&new_bd->props, props,
                        sizeof(struct backlight_properties));
+                if (props->type <= 0 || props->type >= BACKLIGHT_TYPE_MAX) {
+                        WARN(1, "%s: invalid backlight type", name);
+                        new_bd->props.type = BACKLIGHT_RAW;
+                }
+        } else {
+                new_bd->props.type = BACKLIGHT_RAW;
+        }
 
         rc = device_register(&new_bd->dev);
         if (rc) {
diff --git a/drivers/video/backlight/corgi_lcd.c b/drivers/video/backlight/corgi_lcd.c
index 1e71c35083bb..af6098396fe6 100644
--- a/drivers/video/backlight/corgi_lcd.c
+++ b/drivers/video/backlight/corgi_lcd.c
@@ -562,6 +562,7 @@ static int __devinit corgi_lcd_probe(struct spi_device *spi)
         lcd->mode = (pdata) ? pdata->init_mode : CORGI_LCD_MODE_VGA;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = pdata->max_intensity;
         lcd->bl_dev = backlight_device_register("corgi_bl", &spi->dev, lcd,
                                                 &corgi_bl_ops, &props);
diff --git a/drivers/video/backlight/cr_bllcd.c b/drivers/video/backlight/cr_bllcd.c
index 397d15eb1ea8..6c8c54041fae 100644
--- a/drivers/video/backlight/cr_bllcd.c
+++ b/drivers/video/backlight/cr_bllcd.c
@@ -193,6 +193,7 @@ static int cr_backlight_probe(struct platform_device *pdev)
         }
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         bdp = backlight_device_register("cr-backlight", &pdev->dev, NULL,
                                         &cr_backlight_ops, &props);
         if (IS_ERR(bdp)) {
diff --git a/drivers/video/backlight/da903x_bl.c b/drivers/video/backlight/da903x_bl.c
index 87659ed79bd7..62043f12a5a4 100644
--- a/drivers/video/backlight/da903x_bl.c
+++ b/drivers/video/backlight/da903x_bl.c
@@ -136,6 +136,7 @@ static int da903x_backlight_probe(struct platform_device *pdev)
                 da903x_write(data->da903x_dev, DA9034_WLED_CONTROL2,
                                 DA9034_WLED_ISET(pdata->output_current));
 
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = max_brightness;
         bl = backlight_device_register(pdev->name, data->da903x_dev, data,
                                        &da903x_backlight_ops, &props);
diff --git a/drivers/video/backlight/ep93xx_bl.c b/drivers/video/backlight/ep93xx_bl.c
index b0cc49184803..9f1e389d51d2 100644
--- a/drivers/video/backlight/ep93xx_bl.c
+++ b/drivers/video/backlight/ep93xx_bl.c
@@ -87,6 +87,7 @@ static int __init ep93xxbl_probe(struct platform_device *dev)
         ep93xxbl->mmio = EP93XX_RASTER_BRIGHTNESS;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = EP93XX_MAX_BRIGHT;
         bl = backlight_device_register(dev->name, &dev->dev, ep93xxbl,
                                        &ep93xxbl_ops, &props);
diff --git a/drivers/video/backlight/generic_bl.c b/drivers/video/backlight/generic_bl.c
index 312ca619735d..8c6befd65a33 100644
--- a/drivers/video/backlight/generic_bl.c
+++ b/drivers/video/backlight/generic_bl.c
@@ -91,6 +91,7 @@ static int genericbl_probe(struct platform_device *pdev)
                 name = machinfo->name;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = machinfo->max_intensity;
         bd = backlight_device_register(name, &pdev->dev, NULL, &genericbl_ops,
                                        &props);
diff --git a/drivers/video/backlight/hp680_bl.c b/drivers/video/backlight/hp680_bl.c
index 267d23f8d645..38aa00272141 100644
--- a/drivers/video/backlight/hp680_bl.c
+++ b/drivers/video/backlight/hp680_bl.c
@@ -109,6 +109,7 @@ static int __devinit hp680bl_probe(struct platform_device *pdev)
         struct backlight_device *bd;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = HP680_MAX_INTENSITY;
         bd = backlight_device_register("hp680-bl", &pdev->dev, NULL,
                                        &hp680bl_ops, &props);
diff --git a/drivers/video/backlight/jornada720_bl.c b/drivers/video/backlight/jornada720_bl.c
index 2f177b3a4885..de65d80159be 100644
--- a/drivers/video/backlight/jornada720_bl.c
+++ b/drivers/video/backlight/jornada720_bl.c
@@ -106,6 +106,7 @@ static int jornada_bl_probe(struct platform_device *pdev)
         struct backlight_device *bd;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = BL_MAX_BRIGHT;
         bd = backlight_device_register(S1D_DEVICENAME, &pdev->dev, NULL,
                                        &jornada_bl_ops, &props);
@@ -146,12 +147,12 @@ static struct platform_driver jornada_bl_driver = {
         },
 };
 
-int __init jornada_bl_init(void)
+static int __init jornada_bl_init(void)
 {
         return platform_driver_register(&jornada_bl_driver);
 }
 
-void __exit jornada_bl_exit(void)
+static void __exit jornada_bl_exit(void)
 {
         platform_driver_unregister(&jornada_bl_driver);
 }
diff --git a/drivers/video/backlight/jornada720_lcd.c b/drivers/video/backlight/jornada720_lcd.c
index cbbb167fd268..d2ff658b4144 100644
--- a/drivers/video/backlight/jornada720_lcd.c
+++ b/drivers/video/backlight/jornada720_lcd.c
@@ -135,12 +135,12 @@ static struct platform_driver jornada_lcd_driver = {
         },
 };
 
-int __init jornada_lcd_init(void)
+static int __init jornada_lcd_init(void)
 {
         return platform_driver_register(&jornada_lcd_driver);
 }
 
-void __exit jornada_lcd_exit(void)
+static void __exit jornada_lcd_exit(void)
 {
         platform_driver_unregister(&jornada_lcd_driver);
 }
diff --git a/drivers/video/backlight/kb3886_bl.c b/drivers/video/backlight/kb3886_bl.c
index f439a8632287..72dd5556a35b 100644
--- a/drivers/video/backlight/kb3886_bl.c
+++ b/drivers/video/backlight/kb3886_bl.c
@@ -149,6 +149,7 @@ static int kb3886bl_probe(struct platform_device *pdev)
                 machinfo->limit_mask = -1;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = machinfo->max_intensity;
         kb3886_backlight_device = backlight_device_register("kb3886-bl",
                                                             &pdev->dev, NULL,
diff --git a/drivers/video/backlight/ld9040.c b/drivers/video/backlight/ld9040.c
new file mode 100644
index 000000000000..7281b2506a67
--- /dev/null
+++ b/drivers/video/backlight/ld9040.c
@@ -0,0 +1,819 @@
+/*
+ * ld9040 AMOLED LCD panel driver.
+ *
+ * Copyright (c) 2011 Samsung Electronics
+ * Author: Donghwa Lee  <dh09.lee@samsung.com>
+ * Derived from drivers/video/backlight/s6e63m0.c
+ *
+ * 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/wait.h>
+#include <linux/fb.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/lcd.h>
+#include <linux/backlight.h>
+
+#include "ld9040_gamma.h"
+
+#define SLEEPMSEC               0x1000
+#define ENDDEF                  0x2000
+#define DEFMASK                 0xFF00
+#define COMMAND_ONLY            0xFE
+#define DATA_ONLY               0xFF
+
+#define MIN_BRIGHTNESS          0
+#define MAX_BRIGHTNESS          24
+#define power_is_on(pwr)        ((pwr) <= FB_BLANK_NORMAL)
+
+struct ld9040 {
+        struct device                   *dev;
+        struct spi_device               *spi;
+        unsigned int                    power;
+        unsigned int                    current_brightness;
+
+        struct lcd_device               *ld;
+        struct backlight_device         *bd;
+        struct lcd_platform_data        *lcd_pd;
+};
+
+static const unsigned short seq_swreset[] = {
+        0x01, COMMAND_ONLY,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_user_setting[] = {
+        0xF0, 0x5A,
+
+        DATA_ONLY, 0x5A,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_elvss_on[] = {
+        0xB1, 0x0D,
+
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x16,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_gtcon[] = {
+        0xF7, 0x09,
+
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_panel_condition[] = {
+        0xF8, 0x05,
+
+        DATA_ONLY, 0x65,
+        DATA_ONLY, 0x96,
+        DATA_ONLY, 0x71,
+        DATA_ONLY, 0x7D,
+        DATA_ONLY, 0x19,
+        DATA_ONLY, 0x3B,
+        DATA_ONLY, 0x0D,
+        DATA_ONLY, 0x19,
+        DATA_ONLY, 0x7E,
+        DATA_ONLY, 0x0D,
+        DATA_ONLY, 0xE2,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x7E,
+        DATA_ONLY, 0x7D,
+        DATA_ONLY, 0x07,
+        DATA_ONLY, 0x07,
+        DATA_ONLY, 0x20,
+        DATA_ONLY, 0x20,
+        DATA_ONLY, 0x20,
+        DATA_ONLY, 0x02,
+        DATA_ONLY, 0x02,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_gamma_set1[] = {
+        0xF9, 0x00,
+
+        DATA_ONLY, 0xA7,
+        DATA_ONLY, 0xB4,
+        DATA_ONLY, 0xAE,
+        DATA_ONLY, 0xBF,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x91,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0xB2,
+        DATA_ONLY, 0xB4,
+        DATA_ONLY, 0xAA,
+        DATA_ONLY, 0xBB,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0xAC,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0xB3,
+        DATA_ONLY, 0xB1,
+        DATA_ONLY, 0xAA,
+        DATA_ONLY, 0xBC,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0xB3,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_gamma_ctrl[] = {
+        0xFB, 0x02,
+
+        DATA_ONLY, 0x5A,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_gamma_start[] = {
+        0xF9, COMMAND_ONLY,
+
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_apon[] = {
+        0xF3, 0x00,
+
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x0A,
+        DATA_ONLY, 0x02,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_display_ctrl[] = {
+        0xF2, 0x02,
+
+        DATA_ONLY, 0x08,
+        DATA_ONLY, 0x08,
+        DATA_ONLY, 0x10,
+        DATA_ONLY, 0x10,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_manual_pwr[] = {
+        0xB0, 0x04,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_pwr_ctrl[] = {
+        0xF4, 0x0A,
+
+        DATA_ONLY, 0x87,
+        DATA_ONLY, 0x25,
+        DATA_ONLY, 0x6A,
+        DATA_ONLY, 0x44,
+        DATA_ONLY, 0x02,
+        DATA_ONLY, 0x88,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_sleep_out[] = {
+        0x11, COMMAND_ONLY,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_sleep_in[] = {
+        0x10, COMMAND_ONLY,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_display_on[] = {
+        0x29, COMMAND_ONLY,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_display_off[] = {
+        0x28, COMMAND_ONLY,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_vci1_1st_en[] = {
+        0xF3, 0x10,
+
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x02,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_vl1_en[] = {
+        0xF3, 0x11,
+
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x02,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_vl2_en[] = {
+        0xF3, 0x13,
+
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x02,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_vci1_2nd_en[] = {
+        0xF3, 0x33,
+
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x02,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_vl3_en[] = {
+        0xF3, 0x37,
+
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x02,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_vreg1_amp_en[] = {
+        0xF3, 0x37,
+
+        DATA_ONLY, 0x01,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x02,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_vgh_amp_en[] = {
+        0xF3, 0x37,
+
+        DATA_ONLY, 0x11,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x02,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_vgl_amp_en[] = {
+        0xF3, 0x37,
+
+        DATA_ONLY, 0x31,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x02,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_vmos_amp_en[] = {
+        0xF3, 0x37,
+
+        DATA_ONLY, 0xB1,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x03,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_vint_amp_en[] = {
+        0xF3, 0x37,
+
+        DATA_ONLY, 0xF1,
+        /* DATA_ONLY, 0x71,     VMOS/VBL/VBH not used */
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x03,
+        /* DATA_ONLY, 0x02,     VMOS/VBL/VBH not used */
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_vbh_amp_en[] = {
+        0xF3, 0x37,
+
+        DATA_ONLY, 0xF9,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x03,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_vbl_amp_en[] = {
+        0xF3, 0x37,
+
+        DATA_ONLY, 0xFD,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x03,
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_gam_amp_en[] = {
+        0xF3, 0x37,
+
+        DATA_ONLY, 0xFF,
+        /* DATA_ONLY, 0x73,     VMOS/VBL/VBH not used */
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x03,
+        /* DATA_ONLY, 0x02,     VMOS/VBL/VBH not used */
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_sd_amp_en[] = {
+        0xF3, 0x37,
+
+        DATA_ONLY, 0xFF,
+        /* DATA_ONLY, 0x73,     VMOS/VBL/VBH not used */
+        DATA_ONLY, 0x80,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x03,
+        /* DATA_ONLY, 0x02,     VMOS/VBL/VBH not used */
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_gls_en[] = {
+        0xF3, 0x37,
+
+        DATA_ONLY, 0xFF,
+        /* DATA_ONLY, 0x73,     VMOS/VBL/VBH not used */
+        DATA_ONLY, 0x81,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x03,
+        /* DATA_ONLY, 0x02,     VMOS/VBL/VBH not used */
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_els_en[] = {
+        0xF3, 0x37,
+
+        DATA_ONLY, 0xFF,
+        /* DATA_ONLY, 0x73,     VMOS/VBL/VBH not used */
+        DATA_ONLY, 0x83,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x03,
+        /* DATA_ONLY, 0x02,     VMOS/VBL/VBH not used */
+        ENDDEF, 0x00
+};
+
+static const unsigned short seq_el_on[] = {
+        0xF3, 0x37,
+
+        DATA_ONLY, 0xFF,
+        /* DATA_ONLY, 0x73,     VMOS/VBL/VBH not used */
+        DATA_ONLY, 0x87,
+        DATA_ONLY, 0x00,
+        DATA_ONLY, 0x03,
+        /* DATA_ONLY, 0x02,     VMOS/VBL/VBH not used */
+        ENDDEF, 0x00
+};
+
+static int ld9040_spi_write_byte(struct ld9040 *lcd, int addr, int data)
+{
+        u16 buf[1];
+        struct spi_message msg;
+
+        struct spi_transfer xfer = {
+                .len            = 2,
+                .tx_buf         = buf,
+        };
+
+        buf[0] = (addr << 8) | data;
+
+        spi_message_init(&msg);
+        spi_message_add_tail(&xfer, &msg);
+
+        return spi_sync(lcd->spi, &msg);
+}
+
+static int ld9040_spi_write(struct ld9040 *lcd, unsigned char address,
+        unsigned char command)
+{
+        int ret = 0;
+
+        if (address != DATA_ONLY)
+                ret = ld9040_spi_write_byte(lcd, 0x0, address);
+        if (command != COMMAND_ONLY)
+                ret = ld9040_spi_write_byte(lcd, 0x1, command);
+
+        return ret;
+}
+
+static int ld9040_panel_send_sequence(struct ld9040 *lcd,
+        const unsigned short *wbuf)
+{
+        int ret = 0, i = 0;
+
+        while ((wbuf[i] & DEFMASK) != ENDDEF) {
+                if ((wbuf[i] & DEFMASK) != SLEEPMSEC) {
+                        ret = ld9040_spi_write(lcd, wbuf[i], wbuf[i+1]);
+                        if (ret)
+                                break;
+                } else
+                        udelay(wbuf[i+1]*1000);
+                i += 2;
+        }
+
+        return ret;
+}
+
+static int _ld9040_gamma_ctl(struct ld9040 *lcd, const unsigned int *gamma)
+{
+        unsigned int i = 0;
+        int ret = 0;
+
+        /* start gamma table updating. */
+        ret = ld9040_panel_send_sequence(lcd, seq_gamma_start);
+        if (ret) {
+                dev_err(lcd->dev, "failed to disable gamma table updating.\n");
+                goto gamma_err;
+        }
+
+        for (i = 0 ; i < GAMMA_TABLE_COUNT; i++) {
+                ret = ld9040_spi_write(lcd, DATA_ONLY, gamma[i]);
+                if (ret) {
+                        dev_err(lcd->dev, "failed to set gamma table.\n");
+                        goto gamma_err;
+                }
+        }
+
+        /* update gamma table. */
+        ret = ld9040_panel_send_sequence(lcd, seq_gamma_ctrl);
+        if (ret)
+                dev_err(lcd->dev, "failed to update gamma table.\n");
+
+gamma_err:
+        return ret;
+}
+
+static int ld9040_gamma_ctl(struct ld9040 *lcd, int gamma)
+{
+        int ret = 0;
+
+        ret = _ld9040_gamma_ctl(lcd, gamma_table.gamma_22_table[gamma]);
+
+        return ret;
+}
+
+
+static int ld9040_ldi_init(struct ld9040 *lcd)
+{
+        int ret, i;
+        static const unsigned short *init_seq[] = {
+                seq_user_setting,
+                seq_panel_condition,
+                seq_display_ctrl,
+                seq_manual_pwr,
+                seq_elvss_on,
+                seq_gtcon,
+                seq_gamma_set1,
+                seq_gamma_ctrl,
+                seq_sleep_out,
+        };
+
+        for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
+                ret = ld9040_panel_send_sequence(lcd, init_seq[i]);
+                /* workaround: minimum delay time for transferring CMD */
+                udelay(300);
+                if (ret)
+                        break;
+        }
+
+        return ret;
+}
+
+static int ld9040_ldi_enable(struct ld9040 *lcd)
+{
+        int ret = 0;
+
+        ret = ld9040_panel_send_sequence(lcd, seq_display_on);
+
+        return ret;
+}
+
+static int ld9040_ldi_disable(struct ld9040 *lcd)
+{
+        int ret;
+
+        ret = ld9040_panel_send_sequence(lcd, seq_display_off);
+        ret = ld9040_panel_send_sequence(lcd, seq_sleep_in);
+
+        return ret;
+}
+
+static int ld9040_power_on(struct ld9040 *lcd)
+{
+        int ret = 0;
+        struct lcd_platform_data *pd = NULL;
+        pd = lcd->lcd_pd;
+        if (!pd) {
+                dev_err(lcd->dev, "platform data is NULL.\n");
+                return -EFAULT;
+        }
+
+        if (!pd->power_on) {
+                dev_err(lcd->dev, "power_on is NULL.\n");
+                return -EFAULT;
+        } else {
+                pd->power_on(lcd->ld, 1);
+                mdelay(pd->power_on_delay);
+        }
+
+        if (!pd->reset) {
+                dev_err(lcd->dev, "reset is NULL.\n");
+                return -EFAULT;
+        } else {
+                pd->reset(lcd->ld);
+                mdelay(pd->reset_delay);
+        }
+
+        ret = ld9040_ldi_init(lcd);
+        if (ret) {
+                dev_err(lcd->dev, "failed to initialize ldi.\n");
+                return ret;
+        }
+
+        ret = ld9040_ldi_enable(lcd);
+        if (ret) {
+                dev_err(lcd->dev, "failed to enable ldi.\n");
+                return ret;
+        }
+
+        return 0;
+}
+
+static int ld9040_power_off(struct ld9040 *lcd)
+{
+        int ret = 0;
+        struct lcd_platform_data *pd = NULL;
+
+        pd = lcd->lcd_pd;
+        if (!pd) {
+                dev_err(lcd->dev, "platform data is NULL.\n");
+                return -EFAULT;
+        }
+
+        ret = ld9040_ldi_disable(lcd);
+        if (ret) {
+                dev_err(lcd->dev, "lcd setting failed.\n");
+                return -EIO;
+        }
+
+        mdelay(pd->power_off_delay);
+
+        if (!pd->power_on) {
+                dev_err(lcd->dev, "power_on is NULL.\n");
+                return -EFAULT;
+        } else
+                pd->power_on(lcd->ld, 0);
+
+        return 0;
+}
+
+static int ld9040_power(struct ld9040 *lcd, int power)
+{
+        int ret = 0;
+
+        if (power_is_on(power) && !power_is_on(lcd->power))
+                ret = ld9040_power_on(lcd);
+        else if (!power_is_on(power) && power_is_on(lcd->power))
+                ret = ld9040_power_off(lcd);
+
+        if (!ret)
+                lcd->power = power;
+
+        return ret;
+}
+
+static int ld9040_set_power(struct lcd_device *ld, int power)
+{
+        struct ld9040 *lcd = lcd_get_data(ld);
+
+        if (power != FB_BLANK_UNBLANK && power != FB_BLANK_POWERDOWN &&
+                power != FB_BLANK_NORMAL) {
+                dev_err(lcd->dev, "power value should be 0, 1 or 4.\n");
+                return -EINVAL;
+        }
+
+        return ld9040_power(lcd, power);
+}
+
+static int ld9040_get_power(struct lcd_device *ld)
+{
+        struct ld9040 *lcd = lcd_get_data(ld);
+
+        return lcd->power;
+}
+
+static int ld9040_get_brightness(struct backlight_device *bd)
+{
+        return bd->props.brightness;
+}
+
+static int ld9040_set_brightness(struct backlight_device *bd)
+{
+        int ret = 0, brightness = bd->props.brightness;
+        struct ld9040 *lcd = bl_get_data(bd);
+
+        if (brightness < MIN_BRIGHTNESS ||
+                brightness > bd->props.max_brightness) {
+                dev_err(&bd->dev, "lcd brightness should be %d to %d.\n",
+                        MIN_BRIGHTNESS, MAX_BRIGHTNESS);
+                return -EINVAL;
+        }
+
+        ret = ld9040_gamma_ctl(lcd, bd->props.brightness);
+        if (ret) {
+                dev_err(&bd->dev, "lcd brightness setting failed.\n");
+                return -EIO;
+        }
+
+        return ret;
+}
+
+static struct lcd_ops ld9040_lcd_ops = {
+        .set_power = ld9040_set_power,
+        .get_power = ld9040_get_power,
+};
+
+static const struct backlight_ops ld9040_backlight_ops  = {
+        .get_brightness = ld9040_get_brightness,
+        .update_status = ld9040_set_brightness,
+};
+
+
+static int ld9040_probe(struct spi_device *spi)
+{
+        int ret = 0;
+        struct ld9040 *lcd = NULL;
+        struct lcd_device *ld = NULL;
+        struct backlight_device *bd = NULL;
+
+        lcd = kzalloc(sizeof(struct ld9040), GFP_KERNEL);
+        if (!lcd)
+                return -ENOMEM;
+
+        /* ld9040 lcd panel uses 3-wire 9bits SPI Mode. */
+        spi->bits_per_word = 9;
+
+        ret = spi_setup(spi);
+        if (ret < 0) {
+                dev_err(&spi->dev, "spi setup failed.\n");
+                goto out_free_lcd;
+        }
+
+        lcd->spi = spi;
+        lcd->dev = &spi->dev;
+
+        lcd->lcd_pd = spi->dev.platform_data;
+        if (!lcd->lcd_pd) {
+                dev_err(&spi->dev, "platform data is NULL.\n");
+                goto out_free_lcd;
+        }
+
+        ld = lcd_device_register("ld9040", &spi->dev, lcd, &ld9040_lcd_ops);
+        if (IS_ERR(ld)) {
+                ret = PTR_ERR(ld);
+                goto out_free_lcd;
+        }
+
+        lcd->ld = ld;
+
+        bd = backlight_device_register("ld9040-bl", &spi->dev,
+                lcd, &ld9040_backlight_ops, NULL);
+        if (IS_ERR(ld)) {
+                ret = PTR_ERR(ld);
+                goto out_free_lcd;
+        }
+
+        bd->props.max_brightness = MAX_BRIGHTNESS;
+        bd->props.brightness = MAX_BRIGHTNESS;
+        lcd->bd = bd;
+
+        /*
+         * if lcd panel was on from bootloader like u-boot then
+         * do not lcd on.
+         */
+        if (!lcd->lcd_pd->lcd_enabled) {
+                /*
+                 * if lcd panel was off from bootloader then
+                 * current lcd status is powerdown and then
+                 * it enables lcd panel.
+                 */
+                lcd->power = FB_BLANK_POWERDOWN;
+
+                ld9040_power(lcd, FB_BLANK_UNBLANK);
+        } else
+                lcd->power = FB_BLANK_UNBLANK;
+
+        dev_set_drvdata(&spi->dev, lcd);
+
+        dev_info(&spi->dev, "ld9040 panel driver has been probed.\n");
+        return 0;
+
+out_free_lcd:
+        kfree(lcd);
+        return ret;
+}
+
+static int __devexit ld9040_remove(struct spi_device *spi)
+{
+        struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
+
+        ld9040_power(lcd, FB_BLANK_POWERDOWN);
+        lcd_device_unregister(lcd->ld);
+        kfree(lcd);
+
+        return 0;
+}
+
+#if defined(CONFIG_PM)
+static int ld9040_suspend(struct spi_device *spi, pm_message_t mesg)
+{
+        int ret = 0;
+        struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
+
+        dev_dbg(&spi->dev, "lcd->power = %d\n", lcd->power);
+
+        /*
+         * when lcd panel is suspend, lcd panel becomes off
+         * regardless of status.
+         */
+        ret = ld9040_power(lcd, FB_BLANK_POWERDOWN);
+
+        return ret;
+}
+
+static int ld9040_resume(struct spi_device *spi)
+{
+        int ret = 0;
+        struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
+
+        lcd->power = FB_BLANK_POWERDOWN;
+
+        ret = ld9040_power(lcd, FB_BLANK_UNBLANK);
+
+        return ret;
+}
+#else
+#define ld9040_suspend          NULL
+#define ld9040_resume           NULL
+#endif
+
+/* Power down all displays on reboot, poweroff or halt. */
+static void ld9040_shutdown(struct spi_device *spi)
+{
+        struct ld9040 *lcd = dev_get_drvdata(&spi->dev);
+
+        ld9040_power(lcd, FB_BLANK_POWERDOWN);
+}
+
+static struct spi_driver ld9040_driver = {
+        .driver = {
+                .name   = "ld9040",
+                .bus    = &spi_bus_type,
+                .owner  = THIS_MODULE,
+        },
+        .probe          = ld9040_probe,
+        .remove         = __devexit_p(ld9040_remove),
+        .shutdown       = ld9040_shutdown,
+        .suspend        = ld9040_suspend,
+        .resume         = ld9040_resume,
+};
+
+static int __init ld9040_init(void)
+{
+        return spi_register_driver(&ld9040_driver);
+}
+
+static void __exit ld9040_exit(void)
+{
+        spi_unregister_driver(&ld9040_driver);
+}
+
+module_init(ld9040_init);
+module_exit(ld9040_exit);
+
+MODULE_AUTHOR("Donghwa Lee <dh09.lee@samsung.com>");
+MODULE_DESCRIPTION("ld9040 LCD Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/backlight/ld9040_gamma.h b/drivers/video/backlight/ld9040_gamma.h
new file mode 100644
index 000000000000..038d9c86ec03
--- /dev/null
+++ b/drivers/video/backlight/ld9040_gamma.h
@@ -0,0 +1,200 @@
+/*
+ * Gamma level definitions.
+ *
+ * Copyright (c) 2011 Samsung Electronics
+ * InKi Dae <inki.dae@samsung.com>
+ * Donghwa Lee <dh09.lee@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#ifndef _LD9040_BRIGHTNESS_H
+#define _LD9040_BRIGHTNESS_H
+
+#define MAX_GAMMA_LEVEL         25
+#define GAMMA_TABLE_COUNT       21
+
+/* gamma value: 2.2 */
+static const unsigned int ld9040_22_300[] = {
+        0x00, 0xa7, 0xb4, 0xae, 0xbf, 0x00, 0x91,
+        0x00, 0xb2, 0xb4, 0xaa, 0xbb, 0x00, 0xac,
+        0x00, 0xb3, 0xb1, 0xaa, 0xbc, 0x00, 0xb3
+};
+
+static const unsigned int ld9040_22_290[] = {
+        0x00, 0xa9, 0xb7, 0xae, 0xbd, 0x00, 0x89,
+        0x00, 0xb7, 0xb6, 0xa8, 0xba, 0x00, 0xa4,
+        0x00, 0xb1, 0xb4, 0xaa, 0xbb, 0x00, 0xaa
+};
+
+static const unsigned int ld9040_22_280[] = {
+        0x00, 0xa9, 0xb6, 0xad, 0xbf, 0x00, 0x86,
+        0x00, 0xb8, 0xb5, 0xa8, 0xbc, 0x00, 0xa0,
+        0x00, 0xb3, 0xb3, 0xa9, 0xbc, 0x00, 0xa7
+};
+
+static const unsigned int ld9040_22_270[] = {
+        0x00, 0xa8, 0xb8, 0xae, 0xbe, 0x00, 0x84,
+        0x00, 0xb9, 0xb7, 0xa8, 0xbc, 0x00, 0x9d,
+        0x00, 0xb2, 0xb5, 0xaa, 0xbc, 0x00, 0xa4
+
+};
+static const unsigned int ld9040_22_260[] = {
+        0x00, 0xa4, 0xb8, 0xb0, 0xbf, 0x00, 0x80,
+        0x00, 0xb8, 0xb6, 0xaa, 0xbc, 0x00, 0x9a,
+        0x00, 0xb0, 0xb5, 0xab, 0xbd, 0x00, 0xa0
+};
+
+static const unsigned int ld9040_22_250[] = {
+        0x00, 0xa4, 0xb9, 0xaf, 0xc1, 0x00, 0x7d,
+        0x00, 0xb9, 0xb6, 0xaa, 0xbb, 0x00, 0x97,
+        0x00, 0xb1, 0xb5, 0xaa, 0xbf, 0x00, 0x9d
+};
+
+static const unsigned int ld9040_22_240[] = {
+        0x00, 0xa2, 0xb9, 0xaf, 0xc2, 0x00, 0x7a,
+        0x00, 0xb9, 0xb7, 0xaa, 0xbd, 0x00, 0x94,
+        0x00, 0xb0, 0xb5, 0xab, 0xbf, 0x00, 0x9a
+};
+
+static const unsigned int ld9040_22_230[] = {
+        0x00, 0xa0, 0xb9, 0xaf, 0xc3, 0x00, 0x77,
+        0x00, 0xb9, 0xb7, 0xab, 0xbe, 0x00, 0x90,
+        0x00, 0xb0, 0xb6, 0xab, 0xbf, 0x00, 0x97
+};
+
+static const unsigned int ld9040_22_220[] = {
+        0x00, 0x9e, 0xba, 0xb0, 0xc2, 0x00, 0x75,
+        0x00, 0xb9, 0xb8, 0xab, 0xbe, 0x00, 0x8e,
+        0x00, 0xb0, 0xb6, 0xac, 0xbf, 0x00, 0x94
+};
+
+static const unsigned int ld9040_22_210[] = {
+        0x00, 0x9c, 0xb9, 0xb0, 0xc4, 0x00, 0x72,
+        0x00, 0xb8, 0xb8, 0xac, 0xbf, 0x00, 0x8a,
+        0x00, 0xb0, 0xb6, 0xac, 0xc0, 0x00, 0x91
+};
+
+static const unsigned int ld9040_22_200[] = {
+        0x00, 0x9a, 0xba, 0xb1, 0xc4, 0x00, 0x6f,
+        0x00, 0xb8, 0xb8, 0xad, 0xc0, 0x00, 0x86,
+        0x00, 0xb0, 0xb7, 0xad, 0xc0, 0x00, 0x8d
+};
+
+static const unsigned int ld9040_22_190[] = {
+        0x00, 0x97, 0xba, 0xb2, 0xc5, 0x00, 0x6c,
+        0x00, 0xb8, 0xb8, 0xae, 0xc1, 0x00, 0x82,
+        0x00, 0xb0, 0xb6, 0xae, 0xc2, 0x00, 0x89
+};
+
+static const unsigned int ld9040_22_180[] = {
+        0x00, 0x93, 0xba, 0xb3, 0xc5, 0x00, 0x69,
+        0x00, 0xb8, 0xb9, 0xae, 0xc1, 0x00, 0x7f,
+        0x00, 0xb0, 0xb6, 0xae, 0xc3, 0x00, 0x85
+};
+
+static const unsigned int ld9040_22_170[] = {
+        0x00, 0x8b, 0xb9, 0xb3, 0xc7, 0x00, 0x65,
+        0x00, 0xb7, 0xb8, 0xaf, 0xc3, 0x00, 0x7a,
+        0x00, 0x80, 0xb6, 0xae, 0xc4, 0x00, 0x81
+};
+
+static const unsigned int ld9040_22_160[] = {
+        0x00, 0x89, 0xba, 0xb3, 0xc8, 0x00, 0x62,
+        0x00, 0xb6, 0xba, 0xaf, 0xc3, 0x00, 0x76,
+        0x00, 0xaf, 0xb7, 0xae, 0xc4, 0x00, 0x7e
+};
+
+static const unsigned int ld9040_22_150[] = {
+        0x00, 0x82, 0xba, 0xb4, 0xc7, 0x00, 0x5f,
+        0x00, 0xb5, 0xba, 0xb0, 0xc3, 0x00, 0x72,
+        0x00, 0xae, 0xb8, 0xb0, 0xc3, 0x00, 0x7a
+};
+
+static const unsigned int ld9040_22_140[] = {
+        0x00, 0x7b, 0xbb, 0xb4, 0xc8, 0x00, 0x5b,
+        0x00, 0xb5, 0xba, 0xb1, 0xc4, 0x00, 0x6e,
+        0x00, 0xae, 0xb9, 0xb0, 0xc5, 0x00, 0x75
+};
+
+static const unsigned int ld9040_22_130[] = {
+        0x00, 0x71, 0xbb, 0xb5, 0xc8, 0x00, 0x57,
+        0x00, 0xb5, 0xbb, 0xb0, 0xc5, 0x00, 0x6a,
+        0x00, 0xae, 0xb9, 0xb1, 0xc6, 0x00, 0x70
+};
+
+static const unsigned int ld9040_22_120[] = {
+        0x00, 0x47, 0xba, 0xb6, 0xca, 0x00, 0x53,
+        0x00, 0xb5, 0xbb, 0xb3, 0xc6, 0x00, 0x65,
+        0x00, 0xae, 0xb8, 0xb3, 0xc7, 0x00, 0x6c
+};
+
+static const unsigned int ld9040_22_110[] = {
+        0x00, 0x13, 0xbb, 0xb7, 0xca, 0x00, 0x4f,
+        0x00, 0xb4, 0xbb, 0xb3, 0xc7, 0x00, 0x60,
+        0x00, 0xad, 0xb8, 0xb4, 0xc7, 0x00, 0x67
+};
+
+static const unsigned int ld9040_22_100[] = {
+        0x00, 0x13, 0xba, 0xb8, 0xcb, 0x00, 0x4b,
+        0x00, 0xb3, 0xbc, 0xb4, 0xc7, 0x00, 0x5c,
+        0x00, 0xac, 0xb8, 0xb4, 0xc8, 0x00, 0x62
+};
+
+static const unsigned int ld9040_22_90[] = {
+        0x00, 0x13, 0xb9, 0xb8, 0xcd, 0x00, 0x46,
+        0x00, 0xb1, 0xbc, 0xb5, 0xc8, 0x00, 0x56,
+        0x00, 0xaa, 0xb8, 0xb4, 0xc9, 0x00, 0x5d
+};
+
+static const unsigned int ld9040_22_80[] = {
+        0x00, 0x13, 0xba, 0xb9, 0xcd, 0x00, 0x41,
+        0x00, 0xb0, 0xbe, 0xb5, 0xc9, 0x00, 0x51,
+        0x00, 0xa9, 0xb9, 0xb5, 0xca, 0x00, 0x57
+};
+
+static const unsigned int ld9040_22_70[] = {
+        0x00, 0x13, 0xb9, 0xb9, 0xd0, 0x00, 0x3c,
+        0x00, 0xaf, 0xbf, 0xb6, 0xcb, 0x00, 0x4b,
+        0x00, 0xa8, 0xb9, 0xb5, 0xcc, 0x00, 0x52
+};
+
+static const unsigned int ld9040_22_50[] = {
+        0x00, 0x13, 0xb2, 0xba, 0xd2, 0x00, 0x30,
+        0x00, 0xaf, 0xc0, 0xb8, 0xcd, 0x00, 0x3d,
+        0x00, 0xa8, 0xb8, 0xb7, 0xcd, 0x00, 0x44
+};
+
+struct ld9040_gamma {
+        unsigned int *gamma_22_table[MAX_GAMMA_LEVEL];
+} gamma_table = {
+        .gamma_22_table[0] = (unsigned int *)&ld9040_22_50,
+        .gamma_22_table[1] = (unsigned int *)&ld9040_22_70,
+        .gamma_22_table[2] = (unsigned int *)&ld9040_22_80,
+        .gamma_22_table[3] = (unsigned int *)&ld9040_22_90,
+        .gamma_22_table[4] = (unsigned int *)&ld9040_22_100,
+        .gamma_22_table[5] = (unsigned int *)&ld9040_22_110,
+        .gamma_22_table[6] = (unsigned int *)&ld9040_22_120,
+        .gamma_22_table[7] = (unsigned int *)&ld9040_22_130,
+        .gamma_22_table[8] = (unsigned int *)&ld9040_22_140,
+        .gamma_22_table[9] = (unsigned int *)&ld9040_22_150,
+        .gamma_22_table[10] = (unsigned int *)&ld9040_22_160,
+        .gamma_22_table[11] = (unsigned int *)&ld9040_22_170,
+        .gamma_22_table[12] = (unsigned int *)&ld9040_22_180,
+        .gamma_22_table[13] = (unsigned int *)&ld9040_22_190,
+        .gamma_22_table[14] = (unsigned int *)&ld9040_22_200,
+        .gamma_22_table[15] = (unsigned int *)&ld9040_22_210,
+        .gamma_22_table[16] = (unsigned int *)&ld9040_22_220,
+        .gamma_22_table[17] = (unsigned int *)&ld9040_22_230,
+        .gamma_22_table[18] = (unsigned int *)&ld9040_22_240,
+        .gamma_22_table[19] = (unsigned int *)&ld9040_22_250,
+        .gamma_22_table[20] = (unsigned int *)&ld9040_22_260,
+        .gamma_22_table[21] = (unsigned int *)&ld9040_22_270,
+        .gamma_22_table[22] = (unsigned int *)&ld9040_22_280,
+        .gamma_22_table[23] = (unsigned int *)&ld9040_22_290,
+        .gamma_22_table[24] = (unsigned int *)&ld9040_22_300,
+};
+
+#endif
diff --git a/drivers/video/backlight/locomolcd.c b/drivers/video/backlight/locomolcd.c
index d2f59015d517..bbca3127071e 100644
--- a/drivers/video/backlight/locomolcd.c
+++ b/drivers/video/backlight/locomolcd.c
@@ -184,6 +184,7 @@ static int locomolcd_probe(struct locomo_dev *ldev)
         local_irq_restore(flags);
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = 4;
         locomolcd_bl_device = backlight_device_register("locomo-bl",
                                                         &ldev->dev, NULL,
diff --git a/drivers/video/backlight/max8925_bl.c b/drivers/video/backlight/max8925_bl.c
index 209acc105cbc..07e8e273ced0 100644
--- a/drivers/video/backlight/max8925_bl.c
+++ b/drivers/video/backlight/max8925_bl.c
@@ -136,6 +136,7 @@ static int __devinit max8925_backlight_probe(struct platform_device *pdev)
         data->current_brightness = 0;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = MAX_BRIGHTNESS;
         bl = backlight_device_register(name, &pdev->dev, data,
                                         &max8925_backlight_ops, &props);
diff --git a/drivers/video/backlight/mbp_nvidia_bl.c b/drivers/video/backlight/mbp_nvidia_bl.c
deleted file mode 100644
index 1485f7345f49..000000000000
--- a/drivers/video/backlight/mbp_nvidia_bl.c
+++ /dev/null
@@ -1,400 +0,0 @@
-/*
- *  Backlight Driver for Nvidia 8600 in Macbook Pro
- *
- *  Copyright (c) Red Hat <mjg@redhat.com>
- *  Based on code from Pommed:
- *  Copyright (C) 2006 Nicolas Boichat <nicolas @boichat.ch>
- *  Copyright (C) 2006 Felipe Alfaro Solana <felipe_alfaro @linuxmail.org>
- *  Copyright (C) 2007 Julien BLACHE <jb@jblache.org>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 2 as
- *  published by the Free Software Foundation.
- *
- *  This driver triggers SMIs which cause the firmware to change the
- *  backlight brightness. This is icky in many ways, but it's impractical to
- *  get at the firmware code in order to figure out what it's actually doing.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/backlight.h>
-#include <linux/err.h>
-#include <linux/dmi.h>
-#include <linux/io.h>
-
-static struct backlight_device *mbp_backlight_device;
-
-/* Structure to be passed to the DMI_MATCH function. */
-struct dmi_match_data {
-        /* I/O resource to allocate. */
-        unsigned long iostart;
-        unsigned long iolen;
-        /* Backlight operations structure. */
-        const struct backlight_ops backlight_ops;
-};
-
-/* Module parameters. */
-static int debug;
-module_param_named(debug, debug, int, 0644);
-MODULE_PARM_DESC(debug, "Set to one to enable debugging messages.");
-
-/*
- * Implementation for MacBooks with Intel chipset.
- */
-static int intel_chipset_send_intensity(struct backlight_device *bd)
-{
-        int intensity = bd->props.brightness;
-
-        if (debug)
-                printk(KERN_DEBUG "mbp_nvidia_bl: setting brightness to %d\n",
-                       intensity);
-
-        outb(0x04 | (intensity << 4), 0xb3);
-        outb(0xbf, 0xb2);
-        return 0;
-}
-
-static int intel_chipset_get_intensity(struct backlight_device *bd)
-{
-        int intensity;
-
-        outb(0x03, 0xb3);
-        outb(0xbf, 0xb2);
-        intensity = inb(0xb3) >> 4;
-
-        if (debug)
-                printk(KERN_DEBUG "mbp_nvidia_bl: read brightness of %d\n",
-                       intensity);
-
-        return intensity;
-}
-
-static const struct dmi_match_data intel_chipset_data = {
-        .iostart = 0xb2,
-        .iolen = 2,
-        .backlight_ops  = {
-                .options        = BL_CORE_SUSPENDRESUME,
-                .get_brightness = intel_chipset_get_intensity,
-                .update_status  = intel_chipset_send_intensity,
-        }
-};
-
-/*
- * Implementation for MacBooks with Nvidia chipset.
- */
-static int nvidia_chipset_send_intensity(struct backlight_device *bd)
-{
-        int intensity = bd->props.brightness;
-
-        if (debug)
-                printk(KERN_DEBUG "mbp_nvidia_bl: setting brightness to %d\n",
-                       intensity);
-
-        outb(0x04 | (intensity << 4), 0x52f);
-        outb(0xbf, 0x52e);
-        return 0;
-}
-
-static int nvidia_chipset_get_intensity(struct backlight_device *bd)
-{
-        int intensity;
-
-        outb(0x03, 0x52f);
-        outb(0xbf, 0x52e);
-        intensity = inb(0x52f) >> 4;
-
-        if (debug)
-                printk(KERN_DEBUG "mbp_nvidia_bl: read brightness of %d\n",
-                       intensity);
-
-        return intensity;
-}
-
-static const struct dmi_match_data nvidia_chipset_data = {
-        .iostart = 0x52e,
-        .iolen = 2,
-        .backlight_ops          = {
-                .options        = BL_CORE_SUSPENDRESUME,
-                .get_brightness = nvidia_chipset_get_intensity,
-                .update_status  = nvidia_chipset_send_intensity
-        }
-};
-
-/*
- * DMI matching.
- */
-static /* const */ struct dmi_match_data *driver_data;
-
-static int mbp_dmi_match(const struct dmi_system_id *id)
-{
-        driver_data = id->driver_data;
-
-        printk(KERN_INFO "mbp_nvidia_bl: %s detected\n", id->ident);
-        return 1;
-}
-
-static const struct dmi_system_id __initdata mbp_device_table[] = {
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBook 1,1",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
-                },
-                .driver_data    = (void *)&intel_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBook 2,1",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBook2,1"),
-                },
-                .driver_data    = (void *)&intel_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBook 3,1",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBook3,1"),
-                },
-                .driver_data    = (void *)&intel_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBook 4,1",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBook4,1"),
-                },
-                .driver_data    = (void *)&intel_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBook 4,2",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBook4,2"),
-                },
-                .driver_data    = (void *)&intel_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookPro 1,1",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,1"),
-                },
-                .driver_data    = (void *)&intel_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookPro 1,2",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,2"),
-                },
-                .driver_data    = (void *)&intel_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookPro 2,1",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,1"),
-                },
-                .driver_data    = (void *)&intel_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookPro 2,2",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,2"),
-                },
-                .driver_data    = (void *)&intel_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookPro 3,1",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"),
-                },
-                .driver_data    = (void *)&intel_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookPro 3,2",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,2"),
-                },
-                .driver_data    = (void *)&intel_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookPro 4,1",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro4,1"),
-                },
-                .driver_data    = (void *)&intel_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookAir 1,1",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir1,1"),
-                },
-                .driver_data    = (void *)&intel_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBook 5,1",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBook5,1"),
-                },
-                .driver_data    = (void *)&nvidia_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBook 5,2",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBook5,2"),
-                },
-                .driver_data    = (void *)&nvidia_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBook 6,1",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBook6,1"),
-                },
-                .driver_data    = (void *)&nvidia_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookAir 2,1",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir2,1"),
-                },
-                .driver_data    = (void *)&nvidia_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookPro 5,1",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,1"),
-                },
-                .driver_data    = (void *)&nvidia_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookPro 5,2",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,2"),
-                },
-                .driver_data    = (void *)&nvidia_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookPro 5,3",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,3"),
-                },
-                .driver_data    = (void *)&nvidia_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookPro 5,4",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,4"),
-                },
-                .driver_data    = (void *)&nvidia_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookPro 5,5",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,5"),
-                },
-                .driver_data    = (void *)&nvidia_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookAir 3,1",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir3,1"),
-                },
-                .driver_data    = (void *)&nvidia_chipset_data,
-        },
-        {
-                .callback       = mbp_dmi_match,
-                .ident          = "MacBookAir 3,2",
-                .matches        = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir3,2"),
-                },
-                .driver_data    = (void *)&nvidia_chipset_data,
-        },
-        { }
-};
-
-static int __init mbp_init(void)
-{
-        struct backlight_properties props;
-        if (!dmi_check_system(mbp_device_table))
-                return -ENODEV;
-
-        if (!request_region(driver_data->iostart, driver_data->iolen, 
-                                                "Macbook Pro backlight"))
-                return -ENXIO;
-
-        memset(&props, 0, sizeof(struct backlight_properties));
-        props.max_brightness = 15;
-        mbp_backlight_device = backlight_device_register("mbp_backlight", NULL,
-                                                         NULL,
-                                                         &driver_data->backlight_ops,
-                                                         &props);
-        if (IS_ERR(mbp_backlight_device)) {
-                release_region(driver_data->iostart, driver_data->iolen);
-                return PTR_ERR(mbp_backlight_device);
-        }
-
-        mbp_backlight_device->props.brightness =
-                driver_data->backlight_ops.get_brightness(mbp_backlight_device);
-        backlight_update_status(mbp_backlight_device);
-
-        return 0;
-}
-
-static void __exit mbp_exit(void)
-{
-        backlight_device_unregister(mbp_backlight_device);
-
-        release_region(driver_data->iostart, driver_data->iolen);
-}
-
-module_init(mbp_init);
-module_exit(mbp_exit);
-
-MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
-MODULE_DESCRIPTION("Nvidia-based Macbook Pro Backlight Driver");
-MODULE_LICENSE("GPL");
-MODULE_DEVICE_TABLE(dmi, mbp_device_table);
diff --git a/drivers/video/backlight/omap1_bl.c b/drivers/video/backlight/omap1_bl.c
index d3bc56296c8d..08d26a72394c 100644
--- a/drivers/video/backlight/omap1_bl.c
+++ b/drivers/video/backlight/omap1_bl.c
@@ -146,6 +146,7 @@ static int omapbl_probe(struct platform_device *pdev)
                 return -ENOMEM;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = OMAPBL_MAX_INTENSITY;
         dev = backlight_device_register("omap-bl", &pdev->dev, bl, &omapbl_ops,
                                         &props);
diff --git a/drivers/video/backlight/pcf50633-backlight.c b/drivers/video/backlight/pcf50633-backlight.c
index 3c424f7efdcc..ef5628d60563 100644
--- a/drivers/video/backlight/pcf50633-backlight.c
+++ b/drivers/video/backlight/pcf50633-backlight.c
@@ -112,6 +112,7 @@ static int __devinit pcf50633_bl_probe(struct platform_device *pdev)
         if (!pcf_bl)
                 return -ENOMEM;
 
+        bl_props.type = BACKLIGHT_RAW;
         bl_props.max_brightness = 0x3f;
         bl_props.power = FB_BLANK_UNBLANK;
 
diff --git a/drivers/video/backlight/progear_bl.c b/drivers/video/backlight/progear_bl.c
index 809278c90738..6af183d6465e 100644
--- a/drivers/video/backlight/progear_bl.c
+++ b/drivers/video/backlight/progear_bl.c
@@ -84,6 +84,7 @@ static int progearbl_probe(struct platform_device *pdev)
         pci_write_config_byte(sb_dev, SB_MPS1, temp | 0x20);
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = HW_LEVEL_MAX - HW_LEVEL_MIN;
         progear_backlight_device = backlight_device_register("progear-bl",
                                                              &pdev->dev, NULL,
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index 21866ec69656..b8f38ec6eb18 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -28,6 +28,7 @@ struct pwm_bl_data {
         unsigned int            lth_brightness;
         int                     (*notify)(struct device *,
                                           int brightness);
+        int                     (*check_fb)(struct device *, struct fb_info *);
 };
 
 static int pwm_backlight_update_status(struct backlight_device *bl)
@@ -62,9 +63,18 @@ static int pwm_backlight_get_brightness(struct backlight_device *bl)
         return bl->props.brightness;
 }
 
+static int pwm_backlight_check_fb(struct backlight_device *bl,
+                                  struct fb_info *info)
+{
+        struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
+
+        return !pb->check_fb || pb->check_fb(pb->dev, info);
+}
+
 static const struct backlight_ops pwm_backlight_ops = {
         .update_status  = pwm_backlight_update_status,
         .get_brightness = pwm_backlight_get_brightness,
+        .check_fb       = pwm_backlight_check_fb,
 };
 
 static int pwm_backlight_probe(struct platform_device *pdev)
@@ -95,6 +105,7 @@ static int pwm_backlight_probe(struct platform_device *pdev)
 
         pb->period = data->pwm_period_ns;
         pb->notify = data->notify;
+        pb->check_fb = data->check_fb;
         pb->lth_brightness = data->lth_brightness *
                 (data->pwm_period_ns / data->max_brightness);
         pb->dev = &pdev->dev;
@@ -108,6 +119,7 @@ static int pwm_backlight_probe(struct platform_device *pdev)
                 dev_dbg(&pdev->dev, "got pwm for backlight\n");
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = data->max_brightness;
         bl = backlight_device_register(dev_name(&pdev->dev), &pdev->dev, pb,
                                        &pwm_backlight_ops, &props);
diff --git a/drivers/video/backlight/s6e63m0.c b/drivers/video/backlight/s6e63m0.c
index 5927db0da999..322040f686c2 100644
--- a/drivers/video/backlight/s6e63m0.c
+++ b/drivers/video/backlight/s6e63m0.c
@@ -778,6 +778,7 @@ static int __devinit s6e63m0_probe(struct spi_device *spi)
 
         bd->props.max_brightness = MAX_BRIGHTNESS;
         bd->props.brightness = MAX_BRIGHTNESS;
+        bd->props.type = BACKLIGHT_RAW;
         lcd->bd = bd;
 
         /*
diff --git a/drivers/video/backlight/tosa_bl.c b/drivers/video/backlight/tosa_bl.c
index 2a04b382ec48..425a7365470b 100644
--- a/drivers/video/backlight/tosa_bl.c
+++ b/drivers/video/backlight/tosa_bl.c
@@ -102,6 +102,7 @@ static int __devinit tosa_bl_probe(struct i2c_client *client,
         data->i2c = client;
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = 512 - 1;
         data->bl = backlight_device_register("tosa-bl", &client->dev, data,
                                              &bl_ops, &props);
diff --git a/drivers/video/backlight/wm831x_bl.c b/drivers/video/backlight/wm831x_bl.c
index 08fd87f3aecc..d4c6eb248ff9 100644
--- a/drivers/video/backlight/wm831x_bl.c
+++ b/drivers/video/backlight/wm831x_bl.c
@@ -193,6 +193,7 @@ static int wm831x_backlight_probe(struct platform_device *pdev)
         data->current_brightness = 0;
         data->isink_reg = isink_reg;
 
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = max_isel;
         bl = backlight_device_register("wm831x", &pdev->dev, data,
                                        &wm831x_backlight_ops, &props);
diff --git a/drivers/video/bf54x-lq043fb.c b/drivers/video/bf54x-lq043fb.c
index e7d0f525041e..2464b910b590 100644
--- a/drivers/video/bf54x-lq043fb.c
+++ b/drivers/video/bf54x-lq043fb.c
@@ -649,6 +649,7 @@ static int __devinit bfin_bf54x_probe(struct platform_device *pdev)
         }
 #ifndef NO_BL_SUPPORT
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = 255;
         bl_dev = backlight_device_register("bf54x-bl", NULL, NULL,
                                            &bfin_lq043fb_bl_ops, &props);
diff --git a/drivers/video/bfin-t350mcqb-fb.c b/drivers/video/bfin-t350mcqb-fb.c
index 3cf77676947c..d8de29f0dd8d 100644
--- a/drivers/video/bfin-t350mcqb-fb.c
+++ b/drivers/video/bfin-t350mcqb-fb.c
@@ -545,6 +545,7 @@ static int __devinit bfin_t350mcqb_probe(struct platform_device *pdev)
         }
 #ifndef NO_BL_SUPPORT
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = 255;
         bl_dev = backlight_device_register("bf52x-bl", NULL, NULL,
                                            &bfin_lq043fb_bl_ops, &props);
diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index 69bd4a581d4a..ef72cb483834 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -499,6 +499,7 @@ static void imxfb_init_backlight(struct imxfb_info *fbi)
 
         memset(&props, 0, sizeof(struct backlight_properties));
         props.max_brightness = 0xff;
+        props.type = BACKLIGHT_RAW;
         writel(fbi->pwmr, fbi->regs + LCDC_PWMR);
 
         bl = backlight_device_register("imxfb-bl", &fbi->pdev->dev, fbi,
diff --git a/drivers/video/nvidia/nv_backlight.c b/drivers/video/nvidia/nv_backlight.c
index 6aac6d1b937b..8471008aa6ff 100644
--- a/drivers/video/nvidia/nv_backlight.c
+++ b/drivers/video/nvidia/nv_backlight.c
@@ -111,6 +111,7 @@ void nvidia_bl_init(struct nvidia_par *par)
         snprintf(name, sizeof(name), "nvidiabl%d", info->node);
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = FB_BACKLIGHT_LEVELS - 1;
         bd = backlight_device_register(name, info->dev, par, &nvidia_bl_ops,
                                        &props);
diff --git a/drivers/video/omap2/displays/panel-acx565akm.c b/drivers/video/omap2/displays/panel-acx565akm.c
index e77310653207..7e04c921aa2a 100644
--- a/drivers/video/omap2/displays/panel-acx565akm.c
+++ b/drivers/video/omap2/displays/panel-acx565akm.c
@@ -534,6 +534,7 @@ static int acx_panel_probe(struct omap_dss_device *dssdev)
 
         props.fb_blank = FB_BLANK_UNBLANK;
         props.power = FB_BLANK_UNBLANK;
+        props.type = BACKLIGHT_RAW;
 
         bldev = backlight_device_register("acx565akm", &md->spi->dev,
                         md, &acx565akm_bl_ops, &props);
diff --git a/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c b/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
index 9a138f650e05..d2b35d2df2a6 100644
--- a/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
+++ b/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
@@ -99,6 +99,7 @@ static int sharp_ls_panel_probe(struct omap_dss_device *dssdev)
 
         memset(&props, 0, sizeof(struct backlight_properties));
         props.max_brightness = dssdev->max_backlight_level;
+        props.type = BACKLIGHT_RAW;
 
         bl = backlight_device_register("sharp-ls", &dssdev->dev, dssdev,
                         &sharp_ls_bl_ops, &props);
diff --git a/drivers/video/omap2/displays/panel-taal.c b/drivers/video/omap2/displays/panel-taal.c
index 61026f96ad20..c74e8b778ba1 100644
--- a/drivers/video/omap2/displays/panel-taal.c
+++ b/drivers/video/omap2/displays/panel-taal.c
@@ -729,6 +729,8 @@ static int taal_probe(struct omap_dss_device *dssdev)
                 props.max_brightness = 255;
         else
                 props.max_brightness = 127;
+
+        props.type = BACKLIGHT_RAW;
         bldev = backlight_device_register("taal", &dssdev->dev, dssdev,
                                           &taal_bl_ops, &props);
         if (IS_ERR(bldev)) {
diff --git a/drivers/video/riva/fbdev.c b/drivers/video/riva/fbdev.c
index da388186d617..d8ab7be4fd6b 100644
--- a/drivers/video/riva/fbdev.c
+++ b/drivers/video/riva/fbdev.c
@@ -355,6 +355,7 @@ static void riva_bl_init(struct riva_par *par)
         snprintf(name, sizeof(name), "rivabl%d", info->node);
 
         memset(&props, 0, sizeof(struct backlight_properties));
+        props.type = BACKLIGHT_RAW;
         props.max_brightness = FB_BACKLIGHT_LEVELS - 1;
         bd = backlight_device_register(name, info->dev, par, &riva_bl_ops,
                                        &props);
diff --git a/drivers/video/via/viafbdev.h b/drivers/video/via/viafbdev.h
index d66f963e930e..137996dc547e 100644
--- a/drivers/video/via/viafbdev.h
+++ b/drivers/video/via/viafbdev.h
@@ -94,9 +94,6 @@ extern int viafb_LCD_ON;
 extern int viafb_DVI_ON;
 extern int viafb_hotplug;
 
-extern int strict_strtoul(const char *cp, unsigned int base,
-        unsigned long *res);
-
 u8 viafb_gpio_i2c_read_lvds(struct lvds_setting_information
         *plvds_setting_info, struct lvds_chip_information
         *plvds_chip_info, u8 index);
diff --git a/fs/9p/acl.c b/fs/9p/acl.c
index 515455296378..33aa116732c8 100644
--- a/fs/9p/acl.c
+++ b/fs/9p/acl.c
@@ -262,7 +262,7 @@ static int v9fs_xattr_get_acl(struct dentry *dentry, const char *name,
         if (strcmp(name, "") != 0)
                 return -EINVAL;
 
-        v9ses = v9fs_inode2v9ses(dentry->d_inode);
+        v9ses = v9fs_dentry2v9ses(dentry);
         /*
          * We allow set/get/list of acl when access=client is not specified
          */
@@ -312,7 +312,7 @@ static int v9fs_xattr_set_acl(struct dentry *dentry, const char *name,
         if (strcmp(name, "") != 0)
                 return -EINVAL;
 
-        v9ses = v9fs_inode2v9ses(dentry->d_inode);
+        v9ses = v9fs_dentry2v9ses(dentry);
         /*
          * set the attribute on the remote. Without even looking at the
          * xattr value. We leave it to the server to validate
diff --git a/fs/9p/fid.c b/fs/9p/fid.c
index cd63e002d826..0ee594569dcc 100644
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -134,7 +134,7 @@ static struct p9_fid *v9fs_fid_lookup_with_uid(struct dentry *dentry,
         struct v9fs_session_info *v9ses;
         struct p9_fid *fid, *old_fid = NULL;
 
-        v9ses = v9fs_inode2v9ses(dentry->d_inode);
+        v9ses = v9fs_dentry2v9ses(dentry);
         access = v9ses->flags & V9FS_ACCESS_MASK;
         fid = v9fs_fid_find(dentry, uid, any);
         if (fid)
@@ -237,7 +237,7 @@ struct p9_fid *v9fs_fid_lookup(struct dentry *dentry)
         int  any, access;
         struct v9fs_session_info *v9ses;
 
-        v9ses = v9fs_inode2v9ses(dentry->d_inode);
+        v9ses = v9fs_dentry2v9ses(dentry);
         access = v9ses->flags & V9FS_ACCESS_MASK;
         switch (access) {
         case V9FS_ACCESS_SINGLE:
@@ -286,9 +286,11 @@ static struct p9_fid *v9fs_fid_clone_with_uid(struct dentry *dentry, uid_t uid)
 
 struct p9_fid *v9fs_writeback_fid(struct dentry *dentry)
 {
-        int err;
+        int err, flags;
         struct p9_fid *fid;
+        struct v9fs_session_info *v9ses;
 
+        v9ses = v9fs_dentry2v9ses(dentry);
         fid = v9fs_fid_clone_with_uid(dentry, 0);
         if (IS_ERR(fid))
                 goto error_out;
@@ -297,8 +299,17 @@ struct p9_fid *v9fs_writeback_fid(struct dentry *dentry)
          * dirty pages. We always request for the open fid in read-write
          * mode so that a partial page write which result in page
          * read can work.
+         *
+         * we don't have a tsyncfs operation for older version
+         * of protocol. So make sure the write back fid is
+         * opened in O_SYNC mode.
          */
-        err = p9_client_open(fid, O_RDWR);
+        if (!v9fs_proto_dotl(v9ses))
+                flags = O_RDWR | O_SYNC;
+        else
+                flags = O_RDWR;
+
+        err = p9_client_open(fid, flags);
         if (err < 0) {
                 p9_client_clunk(fid);
                 fid = ERR_PTR(err);
diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h
index bd8496db135b..9665c2b840e6 100644
--- a/fs/9p/v9fs.h
+++ b/fs/9p/v9fs.h
@@ -130,6 +130,7 @@ struct v9fs_inode {
 #endif
         unsigned int cache_validity;
         struct p9_fid *writeback_fid;
+        struct mutex v_mutex;
         struct inode vfs_inode;
 };
 
@@ -173,6 +174,11 @@ static inline struct v9fs_session_info *v9fs_inode2v9ses(struct inode *inode)
         return (inode->i_sb->s_fs_info);
 }
 
+static inline struct v9fs_session_info *v9fs_dentry2v9ses(struct dentry *dentry)
+{
+        return dentry->d_sb->s_fs_info;
+}
+
 static inline int v9fs_proto_dotu(struct v9fs_session_info *v9ses)
 {
         return v9ses->flags & V9FS_PROTO_2000U;
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 78bcb97c3425..ffed55817f0c 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -90,7 +90,9 @@ int v9fs_file_open(struct inode *inode, struct file *file)
         }
 
         file->private_data = fid;
-        if (v9ses->cache && !v9inode->writeback_fid) {
+        mutex_lock(&v9inode->v_mutex);
+        if (v9ses->cache && !v9inode->writeback_fid &&
+            ((file->f_flags & O_ACCMODE) != O_RDONLY)) {
                 /*
                  * clone a fid and add it to writeback_fid
                  * we do it during open time instead of
@@ -101,10 +103,12 @@ int v9fs_file_open(struct inode *inode, struct file *file)
                 fid = v9fs_writeback_fid(file->f_path.dentry);
                 if (IS_ERR(fid)) {
                         err = PTR_ERR(fid);
+                        mutex_unlock(&v9inode->v_mutex);
                         goto out_error;
                 }
                 v9inode->writeback_fid = (void *) fid;
         }
+        mutex_unlock(&v9inode->v_mutex);
 #ifdef CONFIG_9P_FSCACHE
         if (v9ses->cache)
                 v9fs_cache_inode_set_cookie(inode, file);
@@ -504,9 +508,12 @@ v9fs_file_write(struct file *filp, const char __user * data,
         if (!count)
                 goto out;
 
-        return v9fs_file_write_internal(filp->f_path.dentry->d_inode,
+        retval = v9fs_file_write_internal(filp->f_path.dentry->d_inode,
                                         filp->private_data,
-                                        data, count, offset, 1);
+                                        data, count, &origin, 1);
+        /* update offset on successful write */
+        if (retval > 0)
+                *offset = origin;
 out:
         return retval;
 }
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 8a2c232f708a..7f6c67703195 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -221,6 +221,7 @@ struct inode *v9fs_alloc_inode(struct super_block *sb)
 #endif
         v9inode->writeback_fid = NULL;
         v9inode->cache_validity = 0;
+        mutex_init(&v9inode->v_mutex);
         return &v9inode->vfs_inode;
 }
 
@@ -650,7 +651,9 @@ v9fs_vfs_create(struct inode *dir, struct dentry *dentry, int mode,
         /* if we are opening a file, assign the open fid to the file */
         if (nd && nd->flags & LOOKUP_OPEN) {
                 v9inode = V9FS_I(dentry->d_inode);
-                if (v9ses->cache && !v9inode->writeback_fid) {
+                mutex_lock(&v9inode->v_mutex);
+                if (v9ses->cache && !v9inode->writeback_fid &&
+                    ((flags & O_ACCMODE) != O_RDONLY)) {
                         /*
                          * clone a fid and add it to writeback_fid
                          * we do it during open time instead of
@@ -661,10 +664,12 @@ v9fs_vfs_create(struct inode *dir, struct dentry *dentry, int mode,
                         inode_fid = v9fs_writeback_fid(dentry);
                         if (IS_ERR(inode_fid)) {
                                 err = PTR_ERR(inode_fid);
+                                mutex_unlock(&v9inode->v_mutex);
                                 goto error;
                         }
                         v9inode->writeback_fid = (void *) inode_fid;
                 }
+                mutex_unlock(&v9inode->v_mutex);
                 filp = lookup_instantiate_filp(nd, dentry, generic_file_open);
                 if (IS_ERR(filp)) {
                         err = PTR_ERR(filp);
@@ -931,7 +936,7 @@ v9fs_vfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
 
         P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry);
         err = -EPERM;
-        v9ses = v9fs_inode2v9ses(dentry->d_inode);
+        v9ses = v9fs_dentry2v9ses(dentry);
         if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
                 generic_fillattr(dentry->d_inode, stat);
                 return 0;
@@ -967,8 +972,12 @@ static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
         struct p9_wstat wstat;
 
         P9_DPRINTK(P9_DEBUG_VFS, "\n");
+        retval = inode_change_ok(dentry->d_inode, iattr);
+        if (retval)
+                return retval;
+
         retval = -EPERM;
-        v9ses = v9fs_inode2v9ses(dentry->d_inode);
+        v9ses = v9fs_dentry2v9ses(dentry);
         fid = v9fs_fid_lookup(dentry);
         if(IS_ERR(fid))
                 return PTR_ERR(fid);
@@ -993,12 +1002,7 @@ static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
                 if (iattr->ia_valid & ATTR_GID)
                         wstat.n_gid = iattr->ia_gid;
         }
-        if ((iattr->ia_valid & ATTR_SIZE) &&
-            iattr->ia_size != i_size_read(dentry->d_inode)) {
-                retval = vmtruncate(dentry->d_inode, iattr->ia_size);
-                if (retval)
-                        return retval;
-        }
+
         /* Write all dirty data */
         if (S_ISREG(dentry->d_inode->i_mode))
                 filemap_write_and_wait(dentry->d_inode->i_mapping);
@@ -1006,6 +1010,11 @@ static int v9fs_vfs_setattr(struct dentry *dentry, struct iattr *iattr)
         retval = p9_client_wstat(fid, &wstat);
         if (retval < 0)
                 return retval;
+
+        if ((iattr->ia_valid & ATTR_SIZE) &&
+            iattr->ia_size != i_size_read(dentry->d_inode))
+                truncate_setsize(dentry->d_inode, iattr->ia_size);
+
         v9fs_invalidate_inode_attr(dentry->d_inode);
 
         setattr_copy(dentry->d_inode, iattr);
@@ -1130,7 +1139,7 @@ static int v9fs_readlink(struct dentry *dentry, char *buffer, int buflen)
 
         P9_DPRINTK(P9_DEBUG_VFS, " %s\n", dentry->d_name.name);
         retval = -EPERM;
-        v9ses = v9fs_inode2v9ses(dentry->d_inode);
+        v9ses = v9fs_dentry2v9ses(dentry);
         fid = v9fs_fid_lookup(dentry);
         if (IS_ERR(fid))
                 return PTR_ERR(fid);
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index 67c138e94feb..ffbb113d5f33 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -245,7 +245,9 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
         v9fs_set_create_acl(dentry, dacl, pacl);
 
         v9inode = V9FS_I(inode);
-        if (v9ses->cache && !v9inode->writeback_fid) {
+        mutex_lock(&v9inode->v_mutex);
+        if (v9ses->cache && !v9inode->writeback_fid &&
+            ((flags & O_ACCMODE) != O_RDONLY)) {
                 /*
                  * clone a fid and add it to writeback_fid
                  * we do it during open time instead of
@@ -256,10 +258,12 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
                 inode_fid = v9fs_writeback_fid(dentry);
                 if (IS_ERR(inode_fid)) {
                         err = PTR_ERR(inode_fid);
+                        mutex_unlock(&v9inode->v_mutex);
                         goto error;
                 }
                 v9inode->writeback_fid = (void *) inode_fid;
         }
+        mutex_unlock(&v9inode->v_mutex);
         /* Since we are opening a file, assign the open fid to the file */
         filp = lookup_instantiate_filp(nd, dentry, generic_file_open);
         if (IS_ERR(filp)) {
@@ -391,7 +395,7 @@ v9fs_vfs_getattr_dotl(struct vfsmount *mnt, struct dentry *dentry,
 
         P9_DPRINTK(P9_DEBUG_VFS, "dentry: %p\n", dentry);
         err = -EPERM;
-        v9ses = v9fs_inode2v9ses(dentry->d_inode);
+        v9ses = v9fs_dentry2v9ses(dentry);
         if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
                 generic_fillattr(dentry->d_inode, stat);
                 return 0;
@@ -448,17 +452,11 @@ int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
         p9attr.mtime_nsec = iattr->ia_mtime.tv_nsec;
 
         retval = -EPERM;
-        v9ses = v9fs_inode2v9ses(dentry->d_inode);
+        v9ses = v9fs_dentry2v9ses(dentry);
         fid = v9fs_fid_lookup(dentry);
         if (IS_ERR(fid))
                 return PTR_ERR(fid);
 
-        if ((iattr->ia_valid & ATTR_SIZE) &&
-            iattr->ia_size != i_size_read(dentry->d_inode)) {
-                retval = vmtruncate(dentry->d_inode, iattr->ia_size);
-                if (retval)
-                        return retval;
-        }
         /* Write all dirty data */
         if (S_ISREG(dentry->d_inode->i_mode))
                 filemap_write_and_wait(dentry->d_inode->i_mapping);
@@ -466,8 +464,12 @@ int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr)
         retval = p9_client_setattr(fid, &p9attr);
         if (retval < 0)
                 return retval;
-        v9fs_invalidate_inode_attr(dentry->d_inode);
 
+        if ((iattr->ia_valid & ATTR_SIZE) &&
+            iattr->ia_size != i_size_read(dentry->d_inode))
+                truncate_setsize(dentry->d_inode, iattr->ia_size);
+
+        v9fs_invalidate_inode_attr(dentry->d_inode);
         setattr_copy(dentry->d_inode, iattr);
         mark_inode_dirty(dentry->d_inode);
         if (iattr->ia_valid & ATTR_MODE) {
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 09fd08d1606f..f3eed3383e4f 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -262,7 +262,7 @@ static int v9fs_statfs(struct dentry *dentry, struct kstatfs *buf)
                 goto done;
         }
 
-        v9ses = v9fs_inode2v9ses(dentry->d_inode);
+        v9ses = v9fs_dentry2v9ses(dentry);
         if (v9fs_proto_dotl(v9ses)) {
                 res = p9_client_statfs(fid, &rs);
                 if (res == 0) {
diff --git a/fs/adfs/adfs.h b/fs/adfs/adfs.h
index 2ff622f6f547..a8a58d864f96 100644
--- a/fs/adfs/adfs.h
+++ b/fs/adfs/adfs.h
@@ -50,6 +50,7 @@ struct adfs_sb_info {
         gid_t           s_gid;          /* owner gid                             */
         umode_t         s_owner_mask;   /* ADFS owner perm -> unix perm          */
         umode_t         s_other_mask;   /* ADFS other perm -> unix perm          */
+        int             s_ftsuffix;     /* ,xyz hex filetype suffix option */
 
         __u32           s_ids_per_zone; /* max. no ids in one zone               */
         __u32           s_idlen;        /* length of ID in map                   */
@@ -79,6 +80,10 @@ struct adfs_dir {
 
         int                     nr_buffers;
         struct buffer_head      *bh[4];
+
+        /* big directories need allocated buffers */
+        struct buffer_head      **bh_fplus;
+
         unsigned int            pos;
         unsigned int            parent_id;
 
@@ -89,7 +94,7 @@ struct adfs_dir {
 /*
  * This is the overall maximum name length
  */
-#define ADFS_MAX_NAME_LEN       256
+#define ADFS_MAX_NAME_LEN       (256 + 4) /* +4 for ,xyz hex filetype suffix */
 struct object_info {
         __u32           parent_id;              /* parent object id     */
         __u32           file_id;                /* object id            */
@@ -97,10 +102,26 @@ struct object_info {
         __u32           execaddr;               /* execution address    */
         __u32           size;                   /* size                 */
         __u8            attr;                   /* RISC OS attributes   */
-        unsigned char   name_len;               /* name length          */
+        unsigned int    name_len;               /* name length          */
         char            name[ADFS_MAX_NAME_LEN];/* file name            */
+
+        /* RISC OS file type (12-bit: derived from loadaddr) */
+        __u16           filetype;
 };
 
+/* RISC OS 12-bit filetype converts to ,xyz hex filename suffix */
+static inline int append_filetype_suffix(char *buf, __u16 filetype)
+{
+        if (filetype == -1)
+                return 0;
+
+        *buf++ = ',';
+        *buf++ = hex_asc_lo(filetype >> 8);
+        *buf++ = hex_asc_lo(filetype >> 4);
+        *buf++ = hex_asc_lo(filetype >> 0);
+        return 4;
+}
+
 struct adfs_dir_ops {
         int     (*read)(struct super_block *sb, unsigned int id, unsigned int sz, struct adfs_dir *dir);
         int     (*setpos)(struct adfs_dir *dir, unsigned int fpos);
diff --git a/fs/adfs/dir_f.c b/fs/adfs/dir_f.c
index bafc71222e25..4bbe853ee50a 100644
--- a/fs/adfs/dir_f.c
+++ b/fs/adfs/dir_f.c
@@ -52,7 +52,6 @@ static inline int adfs_readname(char *buf, char *ptr, int maxlen)
                         *buf++ = *ptr;
                 ptr++;
         }
-        *buf = '\0';
 
         return buf - old_buf;
 }
@@ -208,7 +207,8 @@ release_buffers:
  * convert a disk-based directory entry to a Linux ADFS directory entry
  */
 static inline void
-adfs_dir2obj(struct object_info *obj, struct adfs_direntry *de)
+adfs_dir2obj(struct adfs_dir *dir, struct object_info *obj,
+        struct adfs_direntry *de)
 {
         obj->name_len = adfs_readname(obj->name, de->dirobname, ADFS_F_NAME_LEN);
         obj->file_id  = adfs_readval(de->dirinddiscadd, 3);
@@ -216,6 +216,23 @@ adfs_dir2obj(struct object_info *obj, struct adfs_direntry *de)
         obj->execaddr = adfs_readval(de->direxec, 4);
         obj->size     = adfs_readval(de->dirlen,  4);
         obj->attr     = de->newdiratts;
+        obj->filetype = -1;
+
+        /*
+         * object is a file and is filetyped and timestamped?
+         * RISC OS 12-bit filetype is stored in load_address[19:8]
+         */
+        if ((0 == (obj->attr & ADFS_NDA_DIRECTORY)) &&
+                (0xfff00000 == (0xfff00000 & obj->loadaddr))) {
+                obj->filetype = (__u16) ((0x000fff00 & obj->loadaddr) >> 8);
+
+                /* optionally append the ,xyz hex filetype suffix */
+                if (ADFS_SB(dir->sb)->s_ftsuffix)
+                        obj->name_len +=
+                                append_filetype_suffix(
+                                        &obj->name[obj->name_len],
+                                        obj->filetype);
+        }
 }
 
 /*
@@ -260,7 +277,7 @@ __adfs_dir_get(struct adfs_dir *dir, int pos, struct object_info *obj)
         if (!de.dirobname[0])
                 return -ENOENT;
 
-        adfs_dir2obj(obj, &de);
+        adfs_dir2obj(dir, obj, &de);
 
         return 0;
 }
diff --git a/fs/adfs/dir_fplus.c b/fs/adfs/dir_fplus.c
index 1796bb352d05..d9e3bee4e653 100644
--- a/fs/adfs/dir_fplus.c
+++ b/fs/adfs/dir_fplus.c
@@ -8,6 +8,7 @@
  * published by the Free Software Foundation.
  */
 #include <linux/buffer_head.h>
+#include <linux/slab.h>
 #include "adfs.h"
 #include "dir_fplus.h"
 
@@ -22,30 +23,53 @@ adfs_fplus_read(struct super_block *sb, unsigned int id, unsigned int sz, struct
 
         dir->nr_buffers = 0;
 
+        /* start off using fixed bh set - only alloc for big dirs */
+        dir->bh_fplus = &dir->bh[0];
+
         block = __adfs_block_map(sb, id, 0);
         if (!block) {
                 adfs_error(sb, "dir object %X has a hole at offset 0", id);
                 goto out;
         }
 
-        dir->bh[0] = sb_bread(sb, block);
-        if (!dir->bh[0])
+        dir->bh_fplus[0] = sb_bread(sb, block);
+        if (!dir->bh_fplus[0])
                 goto out;
         dir->nr_buffers += 1;
 
-        h = (struct adfs_bigdirheader *)dir->bh[0]->b_data;
+        h = (struct adfs_bigdirheader *)dir->bh_fplus[0]->b_data;
         size = le32_to_cpu(h->bigdirsize);
         if (size != sz) {
-                printk(KERN_WARNING "adfs: adfs_fplus_read: directory header size\n"
-                                " does not match directory size\n");
+                printk(KERN_WARNING "adfs: adfs_fplus_read:"
+                                        " directory header size %X\n"
+                                        " does not match directory size %X\n",
+                                        size, sz);
         }
 
         if (h->bigdirversion[0] != 0 || h->bigdirversion[1] != 0 ||
             h->bigdirversion[2] != 0 || size & 2047 ||
-            h->bigdirstartname != cpu_to_le32(BIGDIRSTARTNAME))
+            h->bigdirstartname != cpu_to_le32(BIGDIRSTARTNAME)) {
+                printk(KERN_WARNING "adfs: dir object %X has"
+                                        " malformed dir header\n", id);
                 goto out;
+        }
 
         size >>= sb->s_blocksize_bits;
+        if (size > sizeof(dir->bh)/sizeof(dir->bh[0])) {
+                /* this directory is too big for fixed bh set, must allocate */
+                struct buffer_head **bh_fplus =
+                        kzalloc(size * sizeof(struct buffer_head *),
+                                GFP_KERNEL);
+                if (!bh_fplus) {
+                        adfs_error(sb, "not enough memory for"
+                                        " dir object %X (%d blocks)", id, size);
+                        goto out;
+                }
+                dir->bh_fplus = bh_fplus;
+                /* copy over the pointer to the block that we've already read */
+                dir->bh_fplus[0] = dir->bh[0];
+        }
+
         for (blk = 1; blk < size; blk++) {
                 block = __adfs_block_map(sb, id, blk);
                 if (!block) {
@@ -53,25 +77,44 @@ adfs_fplus_read(struct super_block *sb, unsigned int id, unsigned int sz, struct
                         goto out;
                 }
 
-                dir->bh[blk] = sb_bread(sb, block);
-                if (!dir->bh[blk])
+                dir->bh_fplus[blk] = sb_bread(sb, block);
+                if (!dir->bh_fplus[blk]) {
+                        adfs_error(sb,  "dir object %X failed read for"
+                                        " offset %d, mapped block %X",
+                                        id, blk, block);
                         goto out;
-                dir->nr_buffers = blk;
+                }
+
+                dir->nr_buffers += 1;
         }
 
-        t = (struct adfs_bigdirtail *)(dir->bh[size - 1]->b_data + (sb->s_blocksize - 8));
+        t = (struct adfs_bigdirtail *)
+                (dir->bh_fplus[size - 1]->b_data + (sb->s_blocksize - 8));
 
         if (t->bigdirendname != cpu_to_le32(BIGDIRENDNAME) ||
             t->bigdirendmasseq != h->startmasseq ||
-            t->reserved[0] != 0 || t->reserved[1] != 0)
+            t->reserved[0] != 0 || t->reserved[1] != 0) {
+                printk(KERN_WARNING "adfs: dir object %X has "
+                                        "malformed dir end\n", id);
                 goto out;
+        }
 
         dir->parent_id = le32_to_cpu(h->bigdirparent);
         dir->sb = sb;
         return 0;
+
 out:
-        for (i = 0; i < dir->nr_buffers; i++)
-                brelse(dir->bh[i]);
+        if (dir->bh_fplus) {
+                for (i = 0; i < dir->nr_buffers; i++)
+                        brelse(dir->bh_fplus[i]);
+
+                if (&dir->bh[0] != dir->bh_fplus)
+                        kfree(dir->bh_fplus);
+
+                dir->bh_fplus = NULL;
+        }
+
+        dir->nr_buffers = 0;
         dir->sb = NULL;
         return ret;
 }
@@ -79,7 +122,8 @@ out:
 static int
 adfs_fplus_setpos(struct adfs_dir *dir, unsigned int fpos)
 {
-        struct adfs_bigdirheader *h = (struct adfs_bigdirheader *)dir->bh[0]->b_data;
+        struct adfs_bigdirheader *h =
+                (struct adfs_bigdirheader *) dir->bh_fplus[0]->b_data;
         int ret = -ENOENT;
 
         if (fpos <= le32_to_cpu(h->bigdirentries)) {
@@ -102,21 +146,27 @@ dir_memcpy(struct adfs_dir *dir, unsigned int offset, void *to, int len)
         partial = sb->s_blocksize - offset;
 
         if (partial >= len)
-                memcpy(to, dir->bh[buffer]->b_data + offset, len);
+                memcpy(to, dir->bh_fplus[buffer]->b_data + offset, len);
         else {
                 char *c = (char *)to;
 
                 remainder = len - partial;
 
-                memcpy(c, dir->bh[buffer]->b_data + offset, partial);
-                memcpy(c + partial, dir->bh[buffer + 1]->b_data, remainder);
+                memcpy(c,
+                        dir->bh_fplus[buffer]->b_data + offset,
+                        partial);
+
+                memcpy(c + partial,
+                        dir->bh_fplus[buffer + 1]->b_data,
+                        remainder);
         }
 }
 
 static int
 adfs_fplus_getnext(struct adfs_dir *dir, struct object_info *obj)
 {
-        struct adfs_bigdirheader *h = (struct adfs_bigdirheader *)dir->bh[0]->b_data;
+        struct adfs_bigdirheader *h =
+                (struct adfs_bigdirheader *) dir->bh_fplus[0]->b_data;
         struct adfs_bigdirentry bde;
         unsigned int offset;
         int i, ret = -ENOENT;
@@ -147,6 +197,24 @@ adfs_fplus_getnext(struct adfs_dir *dir, struct object_info *obj)
                 if (obj->name[i] == '/')
                         obj->name[i] = '.';
 
+        obj->filetype = -1;
+
+        /*
+         * object is a file and is filetyped and timestamped?
+         * RISC OS 12-bit filetype is stored in load_address[19:8]
+         */
+        if ((0 == (obj->attr & ADFS_NDA_DIRECTORY)) &&
+                (0xfff00000 == (0xfff00000 & obj->loadaddr))) {
+                obj->filetype = (__u16) ((0x000fff00 & obj->loadaddr) >> 8);
+
+                /* optionally append the ,xyz hex filetype suffix */
+                if (ADFS_SB(dir->sb)->s_ftsuffix)
+                        obj->name_len +=
+                                append_filetype_suffix(
+                                        &obj->name[obj->name_len],
+                                        obj->filetype);
+        }
+
         dir->pos += 1;
         ret = 0;
 out:
@@ -160,7 +228,7 @@ adfs_fplus_sync(struct adfs_dir *dir)
         int i;
 
         for (i = dir->nr_buffers - 1; i >= 0; i--) {
-                struct buffer_head *bh = dir->bh[i];
+                struct buffer_head *bh = dir->bh_fplus[i];
                 sync_dirty_buffer(bh);
                 if (buffer_req(bh) && !buffer_uptodate(bh))
                         err = -EIO;
@@ -174,8 +242,17 @@ adfs_fplus_free(struct adfs_dir *dir)
 {
         int i;
 
-        for (i = 0; i < dir->nr_buffers; i++)
-                brelse(dir->bh[i]);
+        if (dir->bh_fplus) {
+                for (i = 0; i < dir->nr_buffers; i++)
+                        brelse(dir->bh_fplus[i]);
+
+                if (&dir->bh[0] != dir->bh_fplus)
+                        kfree(dir->bh_fplus);
+
+                dir->bh_fplus = NULL;
+        }
+
+        dir->nr_buffers = 0;
         dir->sb = NULL;
 }
 
diff --git a/fs/adfs/inode.c b/fs/adfs/inode.c
index 09fe40198d1c..92444e94f842 100644
--- a/fs/adfs/inode.c
+++ b/fs/adfs/inode.c
@@ -78,26 +78,13 @@ static const struct address_space_operations adfs_aops = {
         .bmap           = _adfs_bmap
 };
 
-static inline unsigned int
-adfs_filetype(struct inode *inode)
-{
-        unsigned int type;
-
-        if (ADFS_I(inode)->stamped)
-                type = (ADFS_I(inode)->loadaddr >> 8) & 0xfff;
-        else
-                type = (unsigned int) -1;
-
-        return type;
-}
-
 /*
  * Convert ADFS attributes and filetype to Linux permission.
  */
 static umode_t
 adfs_atts2mode(struct super_block *sb, struct inode *inode)
 {
-        unsigned int filetype, attr = ADFS_I(inode)->attr;
+        unsigned int attr = ADFS_I(inode)->attr;
         umode_t mode, rmask;
         struct adfs_sb_info *asb = ADFS_SB(sb);
 
@@ -106,9 +93,7 @@ adfs_atts2mode(struct super_block *sb, struct inode *inode)
                 return S_IFDIR | S_IXUGO | mode;
         }
 
-        filetype = adfs_filetype(inode);
-
-        switch (filetype) {
+        switch (ADFS_I(inode)->filetype) {
         case 0xfc0:     /* LinkFS */
                 return S_IFLNK|S_IRWXUGO;
 
@@ -174,50 +159,48 @@ adfs_mode2atts(struct super_block *sb, struct inode *inode)
 
 /*
  * Convert an ADFS time to Unix time.  ADFS has a 40-bit centi-second time
- * referenced to 1 Jan 1900 (til 2248)
+ * referenced to 1 Jan 1900 (til 2248) so we need to discard 2208988800 seconds
+ * of time to convert from RISC OS epoch to Unix epoch.
  */
 static void
 adfs_adfs2unix_time(struct timespec *tv, struct inode *inode)
 {
         unsigned int high, low;
+        /* 01 Jan 1970 00:00:00 (Unix epoch) as nanoseconds since
+         * 01 Jan 1900 00:00:00 (RISC OS epoch)
+         */
+        static const s64 nsec_unix_epoch_diff_risc_os_epoch =
+                                                        2208988800000000000LL;
+        s64 nsec;
 
         if (ADFS_I(inode)->stamped == 0)
                 goto cur_time;
 
-        high = ADFS_I(inode)->loadaddr << 24;
-        low  = ADFS_I(inode)->execaddr;
+        high = ADFS_I(inode)->loadaddr & 0xFF; /* top 8 bits of timestamp */
+        low  = ADFS_I(inode)->execaddr;    /* bottom 32 bits of timestamp */
 
-        high |= low >> 8;
-        low  &= 255;
+        /* convert 40-bit centi-seconds to 32-bit seconds
+         * going via nanoseconds to retain precision
+         */
+        nsec = (((s64) high << 32) | (s64) low) * 10000000; /* cs to ns */
 
         /* Files dated pre  01 Jan 1970 00:00:00. */
-        if (high < 0x336e996a)
+        if (nsec < nsec_unix_epoch_diff_risc_os_epoch)
                 goto too_early;
 
-        /* Files dated post 18 Jan 2038 03:14:05. */
-        if (high >= 0x656e9969)
-                goto too_late;
+        /* convert from RISC OS to Unix epoch */
+        nsec -= nsec_unix_epoch_diff_risc_os_epoch;
 
-        /* discard 2208988800 (0x336e996a00) seconds of time */
-        high -= 0x336e996a;
-
-        /* convert 40-bit centi-seconds to 32-bit seconds */
-        tv->tv_sec = (((high % 100) << 8) + low) / 100 + (high / 100 << 8);
-        tv->tv_nsec = 0;
+        *tv = ns_to_timespec(nsec);
         return;
 
  cur_time:
-        *tv = CURRENT_TIME_SEC;
+        *tv = CURRENT_TIME;
         return;
 
  too_early:
         tv->tv_sec = tv->tv_nsec = 0;
         return;
-
- too_late:
-        tv->tv_sec = 0x7ffffffd;
-        tv->tv_nsec = 0;
-        return;
 }
 
 /*
@@ -279,7 +262,8 @@ adfs_iget(struct super_block *sb, struct object_info *obj)
         ADFS_I(inode)->loadaddr  = obj->loadaddr;
         ADFS_I(inode)->execaddr  = obj->execaddr;
         ADFS_I(inode)->attr      = obj->attr;
-        ADFS_I(inode)->stamped    = ((obj->loadaddr & 0xfff00000) == 0xfff00000);
+        ADFS_I(inode)->filetype  = obj->filetype;
+        ADFS_I(inode)->stamped   = ((obj->loadaddr & 0xfff00000) == 0xfff00000);
 
         inode->i_mode    = adfs_atts2mode(sb, inode);
         adfs_adfs2unix_time(&inode->i_mtime, inode);
diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index 06d7388b477b..c8bf36a1996a 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -138,17 +138,20 @@ static int adfs_show_options(struct seq_file *seq, struct vfsmount *mnt)
                 seq_printf(seq, ",ownmask=%o", asb->s_owner_mask);
         if (asb->s_other_mask != ADFS_DEFAULT_OTHER_MASK)
                 seq_printf(seq, ",othmask=%o", asb->s_other_mask);
+        if (asb->s_ftsuffix != 0)
+                seq_printf(seq, ",ftsuffix=%u", asb->s_ftsuffix);
 
         return 0;
 }
 
-enum {Opt_uid, Opt_gid, Opt_ownmask, Opt_othmask, Opt_err};
+enum {Opt_uid, Opt_gid, Opt_ownmask, Opt_othmask, Opt_ftsuffix, Opt_err};
 
 static const match_table_t tokens = {
         {Opt_uid, "uid=%u"},
         {Opt_gid, "gid=%u"},
         {Opt_ownmask, "ownmask=%o"},
         {Opt_othmask, "othmask=%o"},
+        {Opt_ftsuffix, "ftsuffix=%u"},
         {Opt_err, NULL}
 };
 
@@ -189,6 +192,11 @@ static int parse_options(struct super_block *sb, char *options)
                                 return -EINVAL;
                         asb->s_other_mask = option;
                         break;
+                case Opt_ftsuffix:
+                        if (match_int(args, &option))
+                                return -EINVAL;
+                        asb->s_ftsuffix = option;
+                        break;
                 default:
                         printk("ADFS-fs: unrecognised mount option \"%s\" "
                                         "or missing value\n", p);
@@ -366,6 +374,7 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
         asb->s_gid = 0;
         asb->s_owner_mask = ADFS_DEFAULT_OWNER_MASK;
         asb->s_other_mask = ADFS_DEFAULT_OTHER_MASK;
+        asb->s_ftsuffix = 0;
 
         if (parse_options(sb, data))
                 goto error;
@@ -445,11 +454,13 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
 
         root_obj.parent_id = root_obj.file_id = le32_to_cpu(dr->root);
         root_obj.name_len  = 0;
-        root_obj.loadaddr  = 0;
-        root_obj.execaddr  = 0;
+        /* Set root object date as 01 Jan 1987 00:00:00 */
+        root_obj.loadaddr  = 0xfff0003f;
+        root_obj.execaddr  = 0xec22c000;
         root_obj.size      = ADFS_NEWDIR_SIZE;
         root_obj.attr      = ADFS_NDA_DIRECTORY   | ADFS_NDA_OWNER_READ |
                              ADFS_NDA_OWNER_WRITE | ADFS_NDA_PUBLIC_READ;
+        root_obj.filetype  = -1;
 
         /*
          * If this is a F+ disk with variable length directories,
@@ -463,6 +474,12 @@ static int adfs_fill_super(struct super_block *sb, void *data, int silent)
                 asb->s_dir     = &adfs_f_dir_ops;
                 asb->s_namelen = ADFS_F_NAME_LEN;
         }
+        /*
+         * ,xyz hex filetype suffix may be added by driver
+         * to files that have valid RISC OS filetype
+         */
+        if (asb->s_ftsuffix)
+                asb->s_namelen += 4;
 
         sb->s_d_op = &adfs_dentry_operations;
         root = adfs_iget(sb, &root_obj);
diff --git a/fs/aio.c b/fs/aio.c
index 7f54f43b8f7c..ebb6a22e4e1b 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -520,7 +520,7 @@ static inline void really_put_req(struct kioctx *ctx, struct kiocb *req)
         ctx->reqs_active--;
 
         if (unlikely(!ctx->reqs_active && ctx->dead))
-                wake_up(&ctx->wait);
+                wake_up_all(&ctx->wait);
 }
 
 static void aio_fput_routine(struct work_struct *data)
@@ -1229,7 +1229,7 @@ static void io_destroy(struct kioctx *ioctx)
          * by other CPUs at this point.  Right now, we rely on the
          * locking done by the above calls to ensure this consistency.
          */
-        wake_up(&ioctx->wait);
+        wake_up_all(&ioctx->wait);
         put_ioctx(ioctx);       /* once for the lookup */
 }
 
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index d5b640ba6cb1..b2fae009a4b7 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -570,7 +570,7 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
         unsigned long elf_entry;
         unsigned long interp_load_addr = 0;
         unsigned long start_code, end_code, start_data, end_data;
-        unsigned long reloc_func_desc = 0;
+        unsigned long reloc_func_desc __maybe_unused = 0;
         int executable_stack = EXSTACK_DEFAULT;
         unsigned long def_flags = 0;
         struct {
diff --git a/fs/bio.c b/fs/bio.c
index 4bd454fa844e..4cf2a52fbc54 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -111,7 +111,7 @@ static struct kmem_cache *bio_find_or_create_slab(unsigned int extra_size)
         if (!slab)
                 goto out_unlock;
 
-        printk("bio: create slab <%s> at %d\n", bslab->name, entry);
+        printk(KERN_INFO "bio: create slab <%s> at %d\n", bslab->name, entry);
         bslab->slab = slab;
         bslab->slab_ref = 1;
         bslab->slab_size = sz;
diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c
index f5ec2d44150d..faccd47c6c46 100644
--- a/fs/btrfs/zlib.c
+++ b/fs/btrfs/zlib.c
@@ -57,7 +57,8 @@ static struct list_head *zlib_alloc_workspace(void)
         if (!workspace)
                 return ERR_PTR(-ENOMEM);
 
-        workspace->def_strm.workspace = vmalloc(zlib_deflate_workspacesize());
+        workspace->def_strm.workspace = vmalloc(zlib_deflate_workspacesize(
+                                                MAX_WBITS, MAX_MEM_LEVEL));
         workspace->inf_strm.workspace = vmalloc(zlib_inflate_workspacesize());
         workspace->buf = kmalloc(PAGE_CACHE_SIZE, GFP_NOFS);
         if (!workspace->def_strm.workspace ||
diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c
index 08f65faac112..0dba6915712b 100644
--- a/fs/ceph/debugfs.c
+++ b/fs/ceph/debugfs.c
@@ -210,8 +210,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
         if (!fsc->debugfs_congestion_kb)
                 goto out;
 
-        dout("a\n");
-
         snprintf(name, sizeof(name), "../../bdi/%s",
                  dev_name(fsc->backing_dev_info.dev));
         fsc->debugfs_bdi =
@@ -221,7 +219,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
         if (!fsc->debugfs_bdi)
                 goto out;
 
-        dout("b\n");
         fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
                                         0600,
                                         fsc->client->debugfs_dir,
@@ -230,7 +227,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
         if (!fsc->debugfs_mdsmap)
                 goto out;
 
-        dout("ca\n");
         fsc->debugfs_mdsc = debugfs_create_file("mdsc",
                                                 0600,
                                                 fsc->client->debugfs_dir,
@@ -239,7 +235,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
         if (!fsc->debugfs_mdsc)
                 goto out;
 
-        dout("da\n");
         fsc->debugfs_caps = debugfs_create_file("caps",
                                                    0400,
                                                    fsc->client->debugfs_dir,
@@ -248,7 +243,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
         if (!fsc->debugfs_caps)
                 goto out;
 
-        dout("ea\n");
         fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
                                         0600,
                                         fsc->client->debugfs_dir,
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index ebafa65a29b6..1a867a3601ae 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -161,7 +161,7 @@ more:
         filp->f_pos = di->offset;
         err = filldir(dirent, dentry->d_name.name,
                       dentry->d_name.len, di->offset,
-                      dentry->d_inode->i_ino,
+                      ceph_translate_ino(dentry->d_sb, dentry->d_inode->i_ino),
                       dentry->d_inode->i_mode >> 12);
 
         if (last) {
@@ -245,15 +245,17 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir)
 
                 dout("readdir off 0 -> '.'\n");
                 if (filldir(dirent, ".", 1, ceph_make_fpos(0, 0),
-                            inode->i_ino, inode->i_mode >> 12) < 0)
+                            ceph_translate_ino(inode->i_sb, inode->i_ino),
+                            inode->i_mode >> 12) < 0)
                         return 0;
                 filp->f_pos = 1;
                 off = 1;
         }
         if (filp->f_pos == 1) {
+                ino_t ino = filp->f_dentry->d_parent->d_inode->i_ino;
                 dout("readdir off 1 -> '..'\n");
                 if (filldir(dirent, "..", 2, ceph_make_fpos(0, 1),
-                            filp->f_dentry->d_parent->d_inode->i_ino,
+                            ceph_translate_ino(inode->i_sb, ino),
                             inode->i_mode >> 12) < 0)
                         return 0;
                 filp->f_pos = 2;
@@ -377,7 +379,8 @@ more:
                 if (filldir(dirent,
                             rinfo->dir_dname[off - fi->offset],
                             rinfo->dir_dname_len[off - fi->offset],
-                            pos, ino, ftype) < 0) {
+                            pos,
+                            ceph_translate_ino(inode->i_sb, ino), ftype) < 0) {
                         dout("filldir stopping us...\n");
                         return 0;
                 }
@@ -1024,14 +1027,13 @@ out_touch:
 }
 
 /*
- * When a dentry is released, clear the dir I_COMPLETE if it was part
- * of the current dir gen or if this is in the snapshot namespace.
+ * Release our ceph_dentry_info.
  */
-static void ceph_dentry_release(struct dentry *dentry)
+static void ceph_d_release(struct dentry *dentry)
 {
         struct ceph_dentry_info *di = ceph_dentry(dentry);
 
-        dout("dentry_release %p\n", dentry);
+        dout("d_release %p\n", dentry);
         if (di) {
                 ceph_dentry_lru_del(dentry);
                 if (di->lease_session)
@@ -1256,14 +1258,14 @@ const struct inode_operations ceph_dir_iops = {
 
 const struct dentry_operations ceph_dentry_ops = {
         .d_revalidate = ceph_d_revalidate,
-        .d_release = ceph_dentry_release,
+        .d_release = ceph_d_release,
 };
 
 const struct dentry_operations ceph_snapdir_dentry_ops = {
         .d_revalidate = ceph_snapdir_d_revalidate,
-        .d_release = ceph_dentry_release,
+        .d_release = ceph_d_release,
 };
 
 const struct dentry_operations ceph_snap_dentry_ops = {
-        .d_release = ceph_dentry_release,
+        .d_release = ceph_d_release,
 };
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 7d0e4a82d898..159b512d5a27 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -564,11 +564,19 @@ more:
                          * start_request so that a tid has been assigned.
                          */
                         spin_lock(&ci->i_unsafe_lock);
-                        list_add(&req->r_unsafe_item, &ci->i_unsafe_writes);
+                        list_add_tail(&req->r_unsafe_item,
+                                      &ci->i_unsafe_writes);
                         spin_unlock(&ci->i_unsafe_lock);
                         ceph_get_cap_refs(ci, CEPH_CAP_FILE_WR);
                 }
+                
                 ret = ceph_osdc_wait_request(&fsc->client->osdc, req);
+                if (ret < 0 && req->r_safe_callback) {
+                        spin_lock(&ci->i_unsafe_lock);
+                        list_del_init(&req->r_unsafe_item);
+                        spin_unlock(&ci->i_unsafe_lock);
+                        ceph_put_cap_refs(ci, CEPH_CAP_FILE_WR);
+                }
         }
 
         if (file->f_flags & O_DIRECT)
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 193bfa5e9cbd..b54c97da1c43 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -36,6 +36,13 @@ static void ceph_vmtruncate_work(struct work_struct *work);
 /*
  * find or create an inode, given the ceph ino number
  */
+static int ceph_set_ino_cb(struct inode *inode, void *data)
+{
+        ceph_inode(inode)->i_vino = *(struct ceph_vino *)data;
+        inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data);
+        return 0;
+}
+
 struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino)
 {
         struct inode *inode;
@@ -1030,9 +1037,6 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
                         dout("fill_trace doing d_move %p -> %p\n",
                              req->r_old_dentry, dn);
 
-                        /* d_move screws up d_subdirs order */
-                        ceph_i_clear(dir, CEPH_I_COMPLETE);
-
                         d_move(req->r_old_dentry, dn);
                         dout(" src %p '%.*s' dst %p '%.*s'\n",
                              req->r_old_dentry,
@@ -1044,12 +1048,15 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
                            rehashing bug in vfs_rename_dir */
                         ceph_invalidate_dentry_lease(dn);
 
-                        /* take overwritten dentry's readdir offset */
-                        dout("dn %p gets %p offset %lld (old offset %lld)\n",
-                             req->r_old_dentry, dn, ceph_dentry(dn)->offset,
+                        /*
+                         * d_move() puts the renamed dentry at the end of
+                         * d_subdirs.  We need to assign it an appropriate
+                         * directory offset so we can behave when holding
+                         * I_COMPLETE.
+                         */
+                        ceph_set_dentry_offset(req->r_old_dentry);
+                        dout("dn %p gets new offset %lld\n", req->r_old_dentry, 
                              ceph_dentry(req->r_old_dentry)->offset);
-                        ceph_dentry(req->r_old_dentry)->offset =
-                                ceph_dentry(dn)->offset;
 
                         dn = req->r_old_dentry;  /* use old_dentry */
                         in = dn->d_inode;
@@ -1809,7 +1816,7 @@ int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry,
         err = ceph_do_getattr(inode, CEPH_STAT_CAP_INODE_ALL);
         if (!err) {
                 generic_fillattr(inode, stat);
-                stat->ino = inode->i_ino;
+                stat->ino = ceph_translate_ino(inode->i_sb, inode->i_ino);
                 if (ceph_snap(inode) != CEPH_NOSNAP)
                         stat->dev = ceph_snap(inode);
                 else
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 9c5085465a63..a9e78b4a258c 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -131,6 +131,7 @@ enum {
         Opt_rbytes,
         Opt_norbytes,
         Opt_noasyncreaddir,
+        Opt_ino32,
 };
 
 static match_table_t fsopt_tokens = {
@@ -150,6 +151,7 @@ static match_table_t fsopt_tokens = {
         {Opt_rbytes, "rbytes"},
         {Opt_norbytes, "norbytes"},
         {Opt_noasyncreaddir, "noasyncreaddir"},
+        {Opt_ino32, "ino32"},
         {-1, NULL}
 };
 
@@ -225,6 +227,9 @@ static int parse_fsopt_token(char *c, void *private)
         case Opt_noasyncreaddir:
                 fsopt->flags |= CEPH_MOUNT_OPT_NOASYNCREADDIR;
                 break;
+        case Opt_ino32:
+                fsopt->flags |= CEPH_MOUNT_OPT_INO32;
+                break;
         default:
                 BUG_ON(token);
         }
@@ -288,7 +293,7 @@ static int parse_mount_options(struct ceph_mount_options **pfsopt,
         fsopt->sb_flags = flags;
         fsopt->flags = CEPH_MOUNT_OPT_DEFAULT;
 
-        fsopt->rsize = CEPH_MOUNT_RSIZE_DEFAULT;
+        fsopt->rsize = CEPH_RSIZE_DEFAULT;
         fsopt->snapdir_name = kstrdup(CEPH_SNAPDIRNAME_DEFAULT, GFP_KERNEL);
         fsopt->caps_wanted_delay_min = CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT;
         fsopt->caps_wanted_delay_max = CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT;
@@ -370,7 +375,7 @@ static int ceph_show_options(struct seq_file *m, struct vfsmount *mnt)
 
         if (fsopt->wsize)
                 seq_printf(m, ",wsize=%d", fsopt->wsize);
-        if (fsopt->rsize != CEPH_MOUNT_RSIZE_DEFAULT)
+        if (fsopt->rsize != CEPH_RSIZE_DEFAULT)
                 seq_printf(m, ",rsize=%d", fsopt->rsize);
         if (fsopt->congestion_kb != default_congestion_kb())
                 seq_printf(m, ",write_congestion_kb=%d", fsopt->congestion_kb);
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 20b907d76ae2..619fe719968f 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -27,6 +27,7 @@
 #define CEPH_MOUNT_OPT_DIRSTAT         (1<<4) /* `cat dirname` for stats */
 #define CEPH_MOUNT_OPT_RBYTES          (1<<5) /* dir st_bytes = rbytes */
 #define CEPH_MOUNT_OPT_NOASYNCREADDIR  (1<<7) /* no dcache readdir */
+#define CEPH_MOUNT_OPT_INO32           (1<<8) /* 32 bit inos */
 
 #define CEPH_MOUNT_OPT_DEFAULT    (CEPH_MOUNT_OPT_RBYTES)
 
@@ -35,6 +36,7 @@
 #define ceph_test_mount_opt(fsc, opt) \
         (!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt))
 
+#define CEPH_RSIZE_DEFAULT             (512*1024) /* readahead */
 #define CEPH_MAX_READDIR_DEFAULT        1024
 #define CEPH_MAX_READDIR_BYTES_DEFAULT  (512*1024)
 #define CEPH_SNAPDIRNAME_DEFAULT        ".snap"
@@ -319,6 +321,16 @@ static inline struct ceph_inode_info *ceph_inode(struct inode *inode)
         return container_of(inode, struct ceph_inode_info, vfs_inode);
 }
 
+static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode)
+{
+        return (struct ceph_fs_client *)inode->i_sb->s_fs_info;
+}
+
+static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb)
+{
+        return (struct ceph_fs_client *)sb->s_fs_info;
+}
+
 static inline struct ceph_vino ceph_vino(struct inode *inode)
 {
         return ceph_inode(inode)->i_vino;
@@ -327,19 +339,49 @@ static inline struct ceph_vino ceph_vino(struct inode *inode)
 /*
  * ino_t is <64 bits on many architectures, blech.
  *
- * don't include snap in ino hash, at least for now.
+ *               i_ino (kernel inode)   st_ino (userspace)
+ * i386          32                     32
+ * x86_64+ino32  64                     32
+ * x86_64        64                     64
+ */
+static inline u32 ceph_ino_to_ino32(ino_t ino)
+{
+        ino ^= ino >> (sizeof(ino) * 8 - 32);
+        if (!ino)
+                ino = 1;
+        return ino;
+}
+
+/*
+ * kernel i_ino value
  */
 static inline ino_t ceph_vino_to_ino(struct ceph_vino vino)
 {
         ino_t ino = (ino_t)vino.ino;  /* ^ (vino.snap << 20); */
 #if BITS_PER_LONG == 32
-        ino ^= vino.ino >> (sizeof(u64)-sizeof(ino_t)) * 8;
-        if (!ino)
-                ino = 1;
+        ino = ceph_ino_to_ino32(ino);
 #endif
         return ino;
 }
 
+/*
+ * user-visible ino (stat, filldir)
+ */
+#if BITS_PER_LONG == 32
+static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino)
+{
+        return ino;
+}
+#else
+static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino)
+{
+        if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32))
+                ino = ceph_ino_to_ino32(ino);
+        return ino;
+}
+#endif
+
+
 /* for printf-style formatting */
 #define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap
 
@@ -428,13 +470,6 @@ static inline loff_t ceph_make_fpos(unsigned frag, unsigned off)
         return ((loff_t)frag << 32) | (loff_t)off;
 }
 
-static inline int ceph_set_ino_cb(struct inode *inode, void *data)
-{
-        ceph_inode(inode)->i_vino = *(struct ceph_vino *)data;
-        inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data);
-        return 0;
-}
-
 /*
  * caps helpers
  */
@@ -503,15 +538,6 @@ extern void ceph_reservation_status(struct ceph_fs_client *client,
                                     int *total, int *avail, int *used,
                                     int *reserved, int *min);
 
-static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode)
-{
-        return (struct ceph_fs_client *)inode->i_sb->s_fs_info;
-}
-
-static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb)
-{
-        return (struct ceph_fs_client *)sb->s_fs_info;
-}
 
 
 /*
diff --git a/fs/coda/sysctl.c b/fs/coda/sysctl.c
index c6405ce3c50e..06d27a41807f 100644
--- a/fs/coda/sysctl.c
+++ b/fs/coda/sysctl.c
@@ -13,7 +13,6 @@
 
 #ifdef CONFIG_SYSCTL
 static struct ctl_table_header *fs_table_header;
-#endif
 
 static ctl_table coda_table[] = {
         {
@@ -40,7 +39,6 @@ static ctl_table coda_table[] = {
         {}
 };
 
-#ifdef CONFIG_SYSCTL
 static ctl_table fs_table[] = {
         {
                 .procname       = "coda",
@@ -49,22 +47,18 @@ static ctl_table fs_table[] = {
         },
         {}
 };
-#endif
 
 void coda_sysctl_init(void)
 {
-#ifdef CONFIG_SYSCTL
         if ( !fs_table_header )
                 fs_table_header = register_sysctl_table(fs_table);
-#endif
 }
 
 void coda_sysctl_clean(void)
 {
-#ifdef CONFIG_SYSCTL
         if ( fs_table_header ) {
                 unregister_sysctl_table(fs_table_header);
                 fs_table_header = NULL;
         }
-#endif
 }
+#endif
diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index c6bd815dc794..2f27e578d466 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -502,7 +502,7 @@ int devpts_pty_new(struct inode *ptmx_inode, struct tty_struct *tty)
         mutex_lock(&root->d_inode->i_mutex);
 
         dentry = d_alloc_name(root, s);
-        if (!IS_ERR(dentry)) {
+        if (dentry) {
                 d_add(dentry, inode);
                 fsnotify_create(root->d_inode, dentry);
         } else {
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index ff12f7ac73ef..ed38801b57a7 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -316,6 +316,19 @@ static void ep_nested_calls_init(struct nested_calls *ncalls)
 }
 
 /**
+ * ep_events_available - Checks if ready events might be available.
+ *
+ * @ep: Pointer to the eventpoll context.
+ *
+ * Returns: Returns a value different than zero if ready events are available,
+ *          or zero otherwise.
+ */
+static inline int ep_events_available(struct eventpoll *ep)
+{
+        return !list_empty(&ep->rdllist) || ep->ovflist != EP_UNACTIVE_PTR;
+}
+
+/**
  * ep_call_nested - Perform a bound (possibly) nested call, by checking
  *                  that the recursion limit is not exceeded, and that
  *                  the same nested call (by the meaning of same cookie) is
@@ -1135,12 +1148,29 @@ static inline struct timespec ep_set_mstimeout(long ms)
         return timespec_add_safe(now, ts);
 }
 
+/**
+ * ep_poll - Retrieves ready events, and delivers them to the caller supplied
+ *           event buffer.
+ *
+ * @ep: Pointer to the eventpoll context.
+ * @events: Pointer to the userspace buffer where the ready events should be
+ *          stored.
+ * @maxevents: Size (in terms of number of events) of the caller event buffer.
+ * @timeout: Maximum timeout for the ready events fetch operation, in
+ *           milliseconds. If the @timeout is zero, the function will not block,
+ *           while if the @timeout is less than zero, the function will block
+ *           until at least one event has been retrieved (or an error
+ *           occurred).
+ *
+ * Returns: Returns the number of ready events which have been fetched, or an
+ *          error code, in case of error.
+ */
 static int ep_poll(struct eventpoll *ep, struct epoll_event __user *events,
                    int maxevents, long timeout)
 {
-        int res, eavail, timed_out = 0;
+        int res = 0, eavail, timed_out = 0;
         unsigned long flags;
-        long slack;
+        long slack = 0;
         wait_queue_t wait;
         ktime_t expires, *to = NULL;
 
@@ -1151,14 +1181,19 @@ static int ep_poll(struct eventpoll *ep, struct epoll_event __user *events,
                 to = &expires;
                 *to = timespec_to_ktime(end_time);
         } else if (timeout == 0) {
+                /*
+                 * Avoid the unnecessary trip to the wait queue loop, if the
+                 * caller specified a non blocking operation.
+                 */
                 timed_out = 1;
+                spin_lock_irqsave(&ep->lock, flags);
+                goto check_events;
         }
 
-retry:
+fetch_events:
         spin_lock_irqsave(&ep->lock, flags);
 
-        res = 0;
-        if (list_empty(&ep->rdllist)) {
+        if (!ep_events_available(ep)) {
                 /*
                  * We don't have any available event to return to the caller.
                  * We need to sleep here, and we will be wake up by
@@ -1174,7 +1209,7 @@ retry:
                          * to TASK_INTERRUPTIBLE before doing the checks.
                          */
                         set_current_state(TASK_INTERRUPTIBLE);
-                        if (!list_empty(&ep->rdllist) || timed_out)
+                        if (ep_events_available(ep) || timed_out)
                                 break;
                         if (signal_pending(current)) {
                                 res = -EINTR;
@@ -1191,8 +1226,9 @@ retry:
 
                 set_current_state(TASK_RUNNING);
         }
+check_events:
         /* Is it worth to try to dig for events ? */
-        eavail = !list_empty(&ep->rdllist) || ep->ovflist != EP_UNACTIVE_PTR;
+        eavail = ep_events_available(ep);
 
         spin_unlock_irqrestore(&ep->lock, flags);
 
@@ -1203,7 +1239,7 @@ retry:
          */
         if (!res && eavail &&
             !(res = ep_send_events(ep, events, maxevents)) && !timed_out)
-                goto retry;
+                goto fetch_events;
 
         return res;
 }
diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c
index 7c39b885f969..b6cca47f7b07 100644
--- a/fs/fuse/cuse.c
+++ b/fs/fuse/cuse.c
@@ -305,7 +305,7 @@ static void cuse_gendev_release(struct device *dev)
 static void cuse_process_init_reply(struct fuse_conn *fc, struct fuse_req *req)
 {
         struct cuse_conn *cc = fc_to_cc(fc);
-        struct cuse_init_out *arg = &req->misc.cuse_init_out;
+        struct cuse_init_out *arg = req->out.args[0].value;
         struct page *page = req->pages[0];
         struct cuse_devinfo devinfo = { };
         struct device *dev;
@@ -384,6 +384,7 @@ static void cuse_process_init_reply(struct fuse_conn *fc, struct fuse_req *req)
         dev_set_uevent_suppress(dev, 0);
         kobject_uevent(&dev->kobj, KOBJ_ADD);
 out:
+        kfree(arg);
         __free_page(page);
         return;
 
@@ -405,6 +406,7 @@ static int cuse_send_init(struct cuse_conn *cc)
         struct page *page;
         struct fuse_conn *fc = &cc->fc;
         struct cuse_init_in *arg;
+        void *outarg;
 
         BUILD_BUG_ON(CUSE_INIT_INFO_MAX > PAGE_SIZE);
 
@@ -419,6 +421,10 @@ static int cuse_send_init(struct cuse_conn *cc)
         if (!page)
                 goto err_put_req;
 
+        outarg = kzalloc(sizeof(struct cuse_init_out), GFP_KERNEL);
+        if (!outarg)
+                goto err_free_page;
+
         arg = &req->misc.cuse_init_in;
         arg->major = FUSE_KERNEL_VERSION;
         arg->minor = FUSE_KERNEL_MINOR_VERSION;
@@ -429,7 +435,7 @@ static int cuse_send_init(struct cuse_conn *cc)
         req->in.args[0].value = arg;
         req->out.numargs = 2;
         req->out.args[0].size = sizeof(struct cuse_init_out);
-        req->out.args[0].value = &req->misc.cuse_init_out;
+        req->out.args[0].value = outarg;
         req->out.args[1].size = CUSE_INIT_INFO_MAX;
         req->out.argvar = 1;
         req->out.argpages = 1;
@@ -440,6 +446,8 @@ static int cuse_send_init(struct cuse_conn *cc)
 
         return 0;
 
+err_free_page:
+        __free_page(page);
 err_put_req:
         fuse_put_request(fc, req);
 err:
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index cf8d28d1fbad..640fc229df10 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -737,14 +737,12 @@ static int fuse_try_move_page(struct fuse_copy_state *cs, struct page **pagep)
         if (WARN_ON(PageMlocked(oldpage)))
                 goto out_fallback_unlock;
 
-        remove_from_page_cache(oldpage);
-        page_cache_release(oldpage);
-
-        err = add_to_page_cache_locked(newpage, mapping, index, GFP_KERNEL);
+        err = replace_page_cache_page(oldpage, newpage, GFP_KERNEL);
         if (err) {
-                printk(KERN_WARNING "fuse_try_move_page: failed to add page");
-                goto out_fallback_unlock;
+                unlock_page(newpage);
+                return err;
         }
+
         page_cache_get(newpage);
 
         if (!(buf->flags & PIPE_BUF_FLAG_LRU))
@@ -1910,6 +1908,21 @@ __acquires(fc->lock)
                 kfree(dequeue_forget(fc, 1, NULL));
 }
 
+static void end_polls(struct fuse_conn *fc)
+{
+        struct rb_node *p;
+
+        p = rb_first(&fc->polled_files);
+
+        while (p) {
+                struct fuse_file *ff;
+                ff = rb_entry(p, struct fuse_file, polled_node);
+                wake_up_interruptible_all(&ff->poll_wait);
+
+                p = rb_next(p);
+        }
+}
+
 /*
  * Abort all requests.
  *
@@ -1937,6 +1950,7 @@ void fuse_abort_conn(struct fuse_conn *fc)
                 fc->blocked = 0;
                 end_io_requests(fc);
                 end_queued_requests(fc);
+                end_polls(fc);
                 wake_up_all(&fc->waitq);
                 wake_up_all(&fc->blocked_waitq);
                 kill_fasync(&fc->fasync, SIGIO, POLL_IN);
@@ -1953,6 +1967,7 @@ int fuse_dev_release(struct inode *inode, struct file *file)
                 fc->connected = 0;
                 fc->blocked = 0;
                 end_queued_requests(fc);
+                end_polls(fc);
                 wake_up_all(&fc->blocked_waitq);
                 spin_unlock(&fc->lock);
                 fuse_conn_put(fc);
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 8bd0ef9286c3..c6ba49bd95b3 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -158,10 +158,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
 {
         struct inode *inode;
 
-        if (nd && nd->flags & LOOKUP_RCU)
-                return -ECHILD;
-
-        inode = entry->d_inode;
+        inode = ACCESS_ONCE(entry->d_inode);
         if (inode && is_bad_inode(inode))
                 return 0;
         else if (fuse_dentry_time(entry) < get_jiffies_64()) {
@@ -177,6 +174,9 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
                 if (!inode)
                         return 0;
 
+                if (nd->flags & LOOKUP_RCU)
+                        return -ECHILD;
+
                 fc = get_fuse_conn(inode);
                 req = fuse_get_req(fc);
                 if (IS_ERR(req))
@@ -970,6 +970,14 @@ static int fuse_access(struct inode *inode, int mask)
         return err;
 }
 
+static int fuse_perm_getattr(struct inode *inode, int flags)
+{
+        if (flags & IPERM_FLAG_RCU)
+                return -ECHILD;
+
+        return fuse_do_getattr(inode, NULL, NULL);
+}
+
 /*
  * Check permission.  The two basic access models of FUSE are:
  *
@@ -989,9 +997,6 @@ static int fuse_permission(struct inode *inode, int mask, unsigned int flags)
         bool refreshed = false;
         int err = 0;
 
-        if (flags & IPERM_FLAG_RCU)
-                return -ECHILD;
-
         if (!fuse_allow_task(fc, current))
                 return -EACCES;
 
@@ -1000,9 +1005,15 @@ static int fuse_permission(struct inode *inode, int mask, unsigned int flags)
          */
         if ((fc->flags & FUSE_DEFAULT_PERMISSIONS) ||
             ((mask & MAY_EXEC) && S_ISREG(inode->i_mode))) {
-                err = fuse_update_attributes(inode, NULL, NULL, &refreshed);
-                if (err)
-                        return err;
+                struct fuse_inode *fi = get_fuse_inode(inode);
+
+                if (fi->i_time < get_jiffies_64()) {
+                        refreshed = true;
+
+                        err = fuse_perm_getattr(inode, flags);
+                        if (err)
+                                return err;
+                }
         }
 
         if (fc->flags & FUSE_DEFAULT_PERMISSIONS) {
@@ -1012,7 +1023,7 @@ static int fuse_permission(struct inode *inode, int mask, unsigned int flags)
                    attributes.  This is also needed, because the root
                    node will at first have no permissions */
                 if (err == -EACCES && !refreshed) {
-                        err = fuse_do_getattr(inode, NULL, NULL);
+                        err = fuse_perm_getattr(inode, flags);
                         if (!err)
                                 err = generic_permission(inode, mask,
                                                         flags, NULL);
@@ -1023,13 +1034,16 @@ static int fuse_permission(struct inode *inode, int mask, unsigned int flags)
                    noticed immediately, only after the attribute
                    timeout has expired */
         } else if (mask & (MAY_ACCESS | MAY_CHDIR)) {
+                if (flags & IPERM_FLAG_RCU)
+                        return -ECHILD;
+
                 err = fuse_access(inode, mask);
         } else if ((mask & MAY_EXEC) && S_ISREG(inode->i_mode)) {
                 if (!(inode->i_mode & S_IXUGO)) {
                         if (refreshed)
                                 return -EACCES;
 
-                        err = fuse_do_getattr(inode, NULL, NULL);
+                        err = fuse_perm_getattr(inode, flags);
                         if (!err && !(inode->i_mode & S_IXUGO))
                                 return -EACCES;
                 }
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 9e0832dbb1e3..6ea00734984e 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -222,7 +222,7 @@ static void fuse_prepare_release(struct fuse_file *ff, int flags, int opcode)
                 rb_erase(&ff->polled_node, &fc->polled_files);
         spin_unlock(&fc->lock);
 
-        wake_up_interruptible_sync(&ff->poll_wait);
+        wake_up_interruptible_all(&ff->poll_wait);
 
         inarg->fh = ff->fh;
         inarg->flags = flags;
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index d4286947bc2c..b788becada76 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -272,7 +272,6 @@ struct fuse_req {
                 struct fuse_init_in init_in;
                 struct fuse_init_out init_out;
                 struct cuse_init_in cuse_init_in;
-                struct cuse_init_out cuse_init_out;
                 struct {
                         struct fuse_read_in in;
                         u64 attr_ver;
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 9885082b470f..b9eeb1cd03ff 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -332,8 +332,7 @@ static void truncate_huge_page(struct page *page)
 {
         cancel_dirty_page(page, /* No IO accounting for huge pages? */0);
         ClearPageUptodate(page);
-        remove_from_page_cache(page);
-        put_page(page);
+        delete_from_page_cache(page);
 }
 
 static void truncate_hugepages(struct inode *inode, loff_t lstart)
diff --git a/fs/jffs2/compr_zlib.c b/fs/jffs2/compr_zlib.c
index fd05a0b9431d..5a001020c542 100644
--- a/fs/jffs2/compr_zlib.c
+++ b/fs/jffs2/compr_zlib.c
@@ -40,12 +40,13 @@ static z_stream inf_strm, def_strm;
 
 static int __init alloc_workspaces(void)
 {
-        def_strm.workspace = vmalloc(zlib_deflate_workspacesize());
+        def_strm.workspace = vmalloc(zlib_deflate_workspacesize(MAX_WBITS,
+                                                        MAX_MEM_LEVEL));
         if (!def_strm.workspace) {
-                printk(KERN_WARNING "Failed to allocate %d bytes for deflate workspace\n", zlib_deflate_workspacesize());
+                printk(KERN_WARNING "Failed to allocate %d bytes for deflate workspace\n", zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL));
                 return -ENOMEM;
         }
-        D1(printk(KERN_DEBUG "Allocated %d bytes for deflate workspace\n", zlib_deflate_workspacesize()));
+        D1(printk(KERN_DEBUG "Allocated %d bytes for deflate workspace\n", zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL)));
         inf_strm.workspace = vmalloc(zlib_inflate_workspacesize());
         if (!inf_strm.workspace) {
                 printk(KERN_WARNING "Failed to allocate %d bytes for inflate workspace\n", zlib_inflate_workspacesize());
diff --git a/fs/logfs/compr.c b/fs/logfs/compr.c
index 44bbfd249abc..961f02b86d97 100644
--- a/fs/logfs/compr.c
+++ b/fs/logfs/compr.c
@@ -81,7 +81,7 @@ error:
 
 int __init logfs_compr_init(void)
 {
-        size_t size = max(zlib_deflate_workspacesize(),
+        size_t size = max(zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL),
                         zlib_inflate_workspacesize());
         stream.workspace = vmalloc(size);
         if (!stream.workspace)
diff --git a/fs/namespace.c b/fs/namespace.c
index 9263995bf6a1..7dba2ed03429 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2701,7 +2701,7 @@ void __init mnt_init(void)
         if (!mount_hashtable)
                 panic("Failed to allocate mount hash table\n");
 
-        printk("Mount-cache hash table entries: %lu\n", HASH_SIZE);
+        printk(KERN_INFO "Mount-cache hash table entries: %lu\n", HASH_SIZE);
 
         for (u = 0; u < HASH_SIZE; u++)
                 INIT_LIST_HEAD(&mount_hashtable[u]);
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 60b914860f81..93381aae9363 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -1,5 +1,6 @@
 #include <linux/mm.h>
 #include <linux/hugetlb.h>
+#include <linux/huge_mm.h>
 #include <linux/mount.h>
 #include <linux/seq_file.h>
 #include <linux/highmem.h>
@@ -7,6 +8,7 @@
 #include <linux/slab.h>
 #include <linux/pagemap.h>
 #include <linux/mempolicy.h>
+#include <linux/rmap.h>
 #include <linux/swap.h>
 #include <linux/swapops.h>
 
@@ -329,58 +331,86 @@ struct mem_size_stats {
         unsigned long private_dirty;
         unsigned long referenced;
         unsigned long anonymous;
+        unsigned long anonymous_thp;
         unsigned long swap;
         u64 pss;
 };
 
-static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
-                           struct mm_walk *walk)
+
+static void smaps_pte_entry(pte_t ptent, unsigned long addr,
+                unsigned long ptent_size, struct mm_walk *walk)
 {
         struct mem_size_stats *mss = walk->private;
         struct vm_area_struct *vma = mss->vma;
-        pte_t *pte, ptent;
-        spinlock_t *ptl;
         struct page *page;
         int mapcount;
 
-        pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
-        for (; addr != end; pte++, addr += PAGE_SIZE) {
-                ptent = *pte;
-
-                if (is_swap_pte(ptent)) {
-                        mss->swap += PAGE_SIZE;
-                        continue;
-                }
+        if (is_swap_pte(ptent)) {
+                mss->swap += ptent_size;
+                return;
+        }
 
-                if (!pte_present(ptent))
-                        continue;
+        if (!pte_present(ptent))
+                return;
+
+        page = vm_normal_page(vma, addr, ptent);
+        if (!page)
+                return;
+
+        if (PageAnon(page))
+                mss->anonymous += ptent_size;
+
+        mss->resident += ptent_size;
+        /* Accumulate the size in pages that have been accessed. */
+        if (pte_young(ptent) || PageReferenced(page))
+                mss->referenced += ptent_size;
+        mapcount = page_mapcount(page);
+        if (mapcount >= 2) {
+                if (pte_dirty(ptent) || PageDirty(page))
+                        mss->shared_dirty += ptent_size;
+                else
+                        mss->shared_clean += ptent_size;
+                mss->pss += (ptent_size << PSS_SHIFT) / mapcount;
+        } else {
+                if (pte_dirty(ptent) || PageDirty(page))
+                        mss->private_dirty += ptent_size;
+                else
+                        mss->private_clean += ptent_size;
+                mss->pss += (ptent_size << PSS_SHIFT);
+        }
+}
 
-                page = vm_normal_page(vma, addr, ptent);
-                if (!page)
-                        continue;
+static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
+                           struct mm_walk *walk)
+{
+        struct mem_size_stats *mss = walk->private;
+        struct vm_area_struct *vma = mss->vma;
+        pte_t *pte;
+        spinlock_t *ptl;
 
-                if (PageAnon(page))
-                        mss->anonymous += PAGE_SIZE;
-
-                mss->resident += PAGE_SIZE;
-                /* Accumulate the size in pages that have been accessed. */
-                if (pte_young(ptent) || PageReferenced(page))
-                        mss->referenced += PAGE_SIZE;
-                mapcount = page_mapcount(page);
-                if (mapcount >= 2) {
-                        if (pte_dirty(ptent) || PageDirty(page))
-                                mss->shared_dirty += PAGE_SIZE;
-                        else
-                                mss->shared_clean += PAGE_SIZE;
-                        mss->pss += (PAGE_SIZE << PSS_SHIFT) / mapcount;
+        spin_lock(&walk->mm->page_table_lock);
+        if (pmd_trans_huge(*pmd)) {
+                if (pmd_trans_splitting(*pmd)) {
+                        spin_unlock(&walk->mm->page_table_lock);
+                        wait_split_huge_page(vma->anon_vma, pmd);
                 } else {
-                        if (pte_dirty(ptent) || PageDirty(page))
-                                mss->private_dirty += PAGE_SIZE;
-                        else
-                                mss->private_clean += PAGE_SIZE;
-                        mss->pss += (PAGE_SIZE << PSS_SHIFT);
+                        smaps_pte_entry(*(pte_t *)pmd, addr,
+                                        HPAGE_PMD_SIZE, walk);
+                        spin_unlock(&walk->mm->page_table_lock);
+                        mss->anonymous_thp += HPAGE_PMD_SIZE;
+                        return 0;
                 }
+        } else {
+                spin_unlock(&walk->mm->page_table_lock);
         }
+        /*
+         * The mmap_sem held all the way back in m_start() is what
+         * keeps khugepaged out of here and from collapsing things
+         * in here.
+         */
+        pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
+        for (; addr != end; pte++, addr += PAGE_SIZE)
+                smaps_pte_entry(*pte, addr, PAGE_SIZE, walk);
         pte_unmap_unlock(pte - 1, ptl);
         cond_resched();
         return 0;
@@ -416,6 +446,7 @@ static int show_smap(struct seq_file *m, void *v)
                    "Private_Dirty:  %8lu kB\n"
                    "Referenced:     %8lu kB\n"
                    "Anonymous:      %8lu kB\n"
+                   "AnonHugePages:  %8lu kB\n"
                    "Swap:           %8lu kB\n"
                    "KernelPageSize: %8lu kB\n"
                    "MMUPageSize:    %8lu kB\n"
@@ -429,6 +460,7 @@ static int show_smap(struct seq_file *m, void *v)
                    mss.private_dirty >> 10,
                    mss.referenced >> 10,
                    mss.anonymous >> 10,
+                   mss.anonymous_thp >> 10,
                    mss.swap >> 10,
                    vma_kernel_pagesize(vma) >> 10,
                    vma_mmu_pagesize(vma) >> 10,
@@ -467,6 +499,8 @@ static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr,
         spinlock_t *ptl;
         struct page *page;
 
+        split_huge_page_pmd(walk->mm, pmd);
+
         pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
         for (; addr != end; pte++, addr += PAGE_SIZE) {
                 ptent = *pte;
@@ -623,6 +657,8 @@ static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
         pte_t *pte;
         int err = 0;
 
+        split_huge_page_pmd(walk->mm, pmd);
+
         /* find the first VMA at or above 'addr' */
         vma = find_vma(walk->mm, addr);
         for (; addr != end; addr += PAGE_SIZE) {
diff --git a/include/asm-generic/types.h b/include/asm-generic/types.h
index fba7d33ca3f2..7a0f69e6c618 100644
--- a/include/asm-generic/types.h
+++ b/include/asm-generic/types.h
@@ -12,31 +12,4 @@ typedef unsigned short umode_t;
 
 #endif /* __ASSEMBLY__ */
 
-/*
- * These aren't exported outside the kernel to avoid name space clashes
- */
-#ifdef __KERNEL__
-#ifndef __ASSEMBLY__
-/*
- * DMA addresses may be very different from physical addresses
- * and pointers. i386 and powerpc may have 64 bit DMA on 32 bit
- * systems, while sparc64 uses 32 bit DMA addresses for 64 bit
- * physical addresses.
- * This default defines dma_addr_t to have the same size as
- * phys_addr_t, which is the most common way.
- * Do not define the dma64_addr_t type, which never really
- * worked.
- */
-#ifndef dma_addr_t
-#ifdef CONFIG_PHYS_ADDR_T_64BIT
-typedef u64 dma_addr_t;
-#else
-typedef u32 dma_addr_t;
-#endif /* CONFIG_PHYS_ADDR_T_64BIT */
-#endif /* dma_addr_t */
-
-#endif /* __ASSEMBLY__ */
-
-#endif /* __KERNEL__ */
-
 #endif /* _ASM_GENERIC_TYPES_H */
diff --git a/include/asm-generic/unistd.h b/include/asm-generic/unistd.h
index 176b825add52..07c40d5149de 100644
--- a/include/asm-generic/unistd.h
+++ b/include/asm-generic/unistd.h
@@ -652,7 +652,7 @@ __SYSCALL(__NR_name_to_handle_at, sys_name_to_handle_at)
 __SYSCALL(__NR_open_by_handle_at, sys_open_by_handle_at)
 #define __NR_clock_adjtime 266
 __SYSCALL(__NR_clock_adjtime, sys_clock_adjtime)
-#define __NR_syncfs 264
+#define __NR_syncfs 267
 __SYSCALL(__NR_syncfs, sys_syncfs)
 
 #undef __NR_syscalls
diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index 4a3d52e545e1..5ffc6dda4675 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -32,6 +32,13 @@ enum backlight_update_reason {
         BACKLIGHT_UPDATE_SYSFS,
 };
 
+enum backlight_type {
+        BACKLIGHT_RAW = 1,
+        BACKLIGHT_PLATFORM,
+        BACKLIGHT_FIRMWARE,
+        BACKLIGHT_TYPE_MAX,
+};
+
 struct backlight_device;
 struct fb_info;
 
@@ -62,6 +69,8 @@ struct backlight_properties {
         /* FB Blanking active? (values as for power) */
         /* Due to be removed, please use (state & BL_CORE_FBBLANK) */
         int fb_blank;
+        /* Backlight type */
+        enum backlight_type type;
         /* Flags used to signal drivers of state changes */
         /* Upper 4 bits are reserved for driver internal use */
         unsigned int state;
diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h
index 09dcc0c2ffd5..b8e995fbd867 100644
--- a/include/linux/ceph/ceph_fs.h
+++ b/include/linux/ceph/ceph_fs.h
@@ -136,9 +136,18 @@ struct ceph_dir_layout {
 
 
 /* osd */
-#define CEPH_MSG_OSD_MAP          41
-#define CEPH_MSG_OSD_OP           42
-#define CEPH_MSG_OSD_OPREPLY      43
+#define CEPH_MSG_OSD_MAP                41
+#define CEPH_MSG_OSD_OP                 42
+#define CEPH_MSG_OSD_OPREPLY            43
+#define CEPH_MSG_WATCH_NOTIFY           44
+
+
+/* watch-notify operations */
+enum {
+  WATCH_NOTIFY                          = 1, /* notifying watcher */
+  WATCH_NOTIFY_COMPLETE                 = 2, /* notifier notified when done */
+};
+
 
 /* pool operations */
 enum {
@@ -213,8 +222,10 @@ struct ceph_client_mount {
         struct ceph_mon_request_header monhdr;
 } __attribute__ ((packed));
 
+#define CEPH_SUBSCRIBE_ONETIME    1  /* i want only 1 update after have */
+
 struct ceph_mon_subscribe_item {
-        __le64 have_version;    __le64 have;
+        __le64 have_version;    __le64 have;
         __u8 onetime;
 } __attribute__ ((packed));
 
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index 72c72bfccb88..0d2e0fffb470 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -71,7 +71,6 @@ struct ceph_options {
 #define CEPH_OSD_TIMEOUT_DEFAULT    60  /* seconds */
 #define CEPH_OSD_KEEPALIVE_DEFAULT  5
 #define CEPH_OSD_IDLE_TTL_DEFAULT    60
-#define CEPH_MOUNT_RSIZE_DEFAULT    (512*1024) /* readahead */
 
 #define CEPH_MSG_MAX_FRONT_LEN  (16*1024*1024)
 #define CEPH_MSG_MAX_DATA_LEN   (16*1024*1024)
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index a1af29648fb5..f88eacb111d4 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -32,6 +32,7 @@ struct ceph_osd {
         struct rb_node o_node;
         struct ceph_connection o_con;
         struct list_head o_requests;
+        struct list_head o_linger_requests;
         struct list_head o_osd_lru;
         struct ceph_authorizer *o_authorizer;
         void *o_authorizer_buf, *o_authorizer_reply_buf;
@@ -47,6 +48,8 @@ struct ceph_osd_request {
         struct rb_node  r_node;
         struct list_head r_req_lru_item;
         struct list_head r_osd_item;
+        struct list_head r_linger_item;
+        struct list_head r_linger_osd;
         struct ceph_osd *r_osd;
         struct ceph_pg   r_pgid;
         int              r_pg_osds[CEPH_PG_MAX_SIZE];
@@ -59,6 +62,7 @@ struct ceph_osd_request {
         int               r_flags;     /* any additional flags for the osd */
         u32               r_sent;      /* >0 if r_request is sending/sent */
         int               r_got_reply;
+        int               r_linger;
 
         struct ceph_osd_client *r_osdc;
         struct kref       r_kref;
@@ -74,7 +78,6 @@ struct ceph_osd_request {
         char              r_oid[40];          /* object name */
         int               r_oid_len;
         unsigned long     r_stamp;            /* send OR check time */
-        bool              r_resend;           /* msg send failed, needs retry */
 
         struct ceph_file_layout r_file_layout;
         struct ceph_snap_context *r_snapc;    /* snap context for writes */
@@ -90,6 +93,26 @@ struct ceph_osd_request {
         struct ceph_pagelist *r_trail;        /* trailing part of the data */
 };
 
+struct ceph_osd_event {
+        u64 cookie;
+        int one_shot;
+        struct ceph_osd_client *osdc;
+        void (*cb)(u64, u64, u8, void *);
+        void *data;
+        struct rb_node node;
+        struct list_head osd_node;
+        struct kref kref;
+        struct completion completion;
+};
+
+struct ceph_osd_event_work {
+        struct work_struct work;
+        struct ceph_osd_event *event;
+        u64 ver;
+        u64 notify_id;
+        u8 opcode;
+};
+
 struct ceph_osd_client {
         struct ceph_client     *client;
 
@@ -104,7 +127,10 @@ struct ceph_osd_client {
         u64                    timeout_tid;   /* tid of timeout triggering rq */
         u64                    last_tid;      /* tid of last request */
         struct rb_root         requests;      /* pending requests */
-        struct list_head       req_lru;       /* pending requests lru */
+        struct list_head       req_lru;       /* in-flight lru */
+        struct list_head       req_unsent;    /* unsent/need-resend queue */
+        struct list_head       req_notarget;  /* map to no osd */
+        struct list_head       req_linger;    /* lingering requests */
         int                    num_requests;
         struct delayed_work    timeout_work;
         struct delayed_work    osds_timeout_work;
@@ -116,6 +142,12 @@ struct ceph_osd_client {
 
         struct ceph_msgpool     msgpool_op;
         struct ceph_msgpool     msgpool_op_reply;
+
+        spinlock_t              event_lock;
+        struct rb_root          event_tree;
+        u64                     event_count;
+
+        struct workqueue_struct *notify_wq;
 };
 
 struct ceph_osd_req_op {
@@ -150,6 +182,13 @@ struct ceph_osd_req_op {
                 struct {
                         u64 snapid;
                 } snap;
+                struct {
+                        u64 cookie;
+                        u64 ver;
+                        __u8 flag;
+                        u32 prot_ver;
+                        u32 timeout;
+                } watch;
         };
         u32 payload_len;
 };
@@ -198,6 +237,11 @@ extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *,
                                       bool use_mempool, int num_reply,
                                       int page_align);
 
+extern void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
+                                         struct ceph_osd_request *req);
+extern void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc,
+                                                struct ceph_osd_request *req);
+
 static inline void ceph_osdc_get_request(struct ceph_osd_request *req)
 {
         kref_get(&req->r_kref);
@@ -233,5 +277,14 @@ extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
                                 struct page **pages, int nr_pages,
                                 int flags, int do_sync, bool nofail);
 
+/* watch/notify events */
+extern int ceph_osdc_create_event(struct ceph_osd_client *osdc,
+                                  void (*event_cb)(u64, u64, u8, void *),
+                                  int one_shot, void *data,
+                                  struct ceph_osd_event **pevent);
+extern void ceph_osdc_cancel_event(struct ceph_osd_event *event);
+extern int ceph_osdc_wait_event(struct ceph_osd_event *event,
+                                unsigned long timeout);
+extern void ceph_osdc_put_event(struct ceph_osd_event *event);
 #endif
 
diff --git a/include/linux/ceph/rados.h b/include/linux/ceph/rados.h
index 6d5247f2e81b..0a99099801a4 100644
--- a/include/linux/ceph/rados.h
+++ b/include/linux/ceph/rados.h
@@ -12,9 +12,9 @@
  * osdmap encoding versions
  */
 #define CEPH_OSDMAP_INC_VERSION     5
-#define CEPH_OSDMAP_INC_VERSION_EXT 5
+#define CEPH_OSDMAP_INC_VERSION_EXT 6
 #define CEPH_OSDMAP_VERSION         5
-#define CEPH_OSDMAP_VERSION_EXT     5
+#define CEPH_OSDMAP_VERSION_EXT     6
 
 /*
  * fs id
@@ -181,9 +181,17 @@ enum {
         /* read */
         CEPH_OSD_OP_READ      = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 1,
         CEPH_OSD_OP_STAT      = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 2,
+        CEPH_OSD_OP_MAPEXT    = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 3,
 
         /* fancy read */
-        CEPH_OSD_OP_MASKTRUNC = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 4,
+        CEPH_OSD_OP_MASKTRUNC   = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 4,
+        CEPH_OSD_OP_SPARSE_READ = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 5,
+
+        CEPH_OSD_OP_NOTIFY    = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 6,
+        CEPH_OSD_OP_NOTIFY_ACK = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 7,
+
+        /* versioning */
+        CEPH_OSD_OP_ASSERT_VER = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 8,
 
         /* write */
         CEPH_OSD_OP_WRITE     = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 1,
@@ -205,6 +213,8 @@ enum {
         CEPH_OSD_OP_CREATE  = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 13,
         CEPH_OSD_OP_ROLLBACK= CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 14,
 
+        CEPH_OSD_OP_WATCH   = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 15,
+
         /** attrs **/
         /* read */
         CEPH_OSD_OP_GETXATTR  = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_ATTR | 1,
@@ -218,11 +228,14 @@ enum {
         CEPH_OSD_OP_RMXATTR   = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_ATTR | 4,
 
         /** subop **/
-        CEPH_OSD_OP_PULL           = CEPH_OSD_OP_MODE_SUB | 1,
-        CEPH_OSD_OP_PUSH           = CEPH_OSD_OP_MODE_SUB | 2,
-        CEPH_OSD_OP_BALANCEREADS   = CEPH_OSD_OP_MODE_SUB | 3,
-        CEPH_OSD_OP_UNBALANCEREADS = CEPH_OSD_OP_MODE_SUB | 4,
-        CEPH_OSD_OP_SCRUB          = CEPH_OSD_OP_MODE_SUB | 5,
+        CEPH_OSD_OP_PULL            = CEPH_OSD_OP_MODE_SUB | 1,
+        CEPH_OSD_OP_PUSH            = CEPH_OSD_OP_MODE_SUB | 2,
+        CEPH_OSD_OP_BALANCEREADS    = CEPH_OSD_OP_MODE_SUB | 3,
+        CEPH_OSD_OP_UNBALANCEREADS  = CEPH_OSD_OP_MODE_SUB | 4,
+        CEPH_OSD_OP_SCRUB           = CEPH_OSD_OP_MODE_SUB | 5,
+        CEPH_OSD_OP_SCRUB_RESERVE   = CEPH_OSD_OP_MODE_SUB | 6,
+        CEPH_OSD_OP_SCRUB_UNRESERVE = CEPH_OSD_OP_MODE_SUB | 7,
+        CEPH_OSD_OP_SCRUB_STOP      = CEPH_OSD_OP_MODE_SUB | 8,
 
         /** lock **/
         CEPH_OSD_OP_WRLOCK    = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 1,
@@ -328,6 +341,8 @@ enum {
         CEPH_OSD_CMPXATTR_MODE_U64    = 2
 };
 
+#define RADOS_NOTIFY_VER        1
+
 /*
  * an individual object operation.  each may be accompanied by some data
  * payload
@@ -359,7 +374,12 @@ struct ceph_osd_op {
                 struct {
                         __le64 snapid;
                 } __attribute__ ((packed)) snap;
-        };
+                struct {
+                        __le64 cookie;
+                        __le64 ver;
+                        __u8 flag;      /* 0 = unwatch, 1 = watch */
+                } __attribute__ ((packed)) watch;
+};
         __le32 payload_len;
 } __attribute__ ((packed));
 
@@ -402,4 +422,5 @@ struct ceph_osd_reply_head {
 } __attribute__ ((packed));
 
 
+
 #endif
diff --git a/include/linux/compaction.h b/include/linux/compaction.h
index dfa2ed4c0d26..cc9f7a428649 100644
--- a/include/linux/compaction.h
+++ b/include/linux/compaction.h
@@ -11,9 +11,6 @@
 /* The full zone was compacted */
 #define COMPACT_COMPLETE        3
 
-#define COMPACT_MODE_DIRECT_RECLAIM     0
-#define COMPACT_MODE_KSWAPD             1
-
 #ifdef CONFIG_COMPACTION
 extern int sysctl_compact_memory;
 extern int sysctl_compaction_handler(struct ctl_table *table, int write,
@@ -28,8 +25,7 @@ extern unsigned long try_to_compact_pages(struct zonelist *zonelist,
                         bool sync);
 extern unsigned long compaction_suitable(struct zone *zone, int order);
 extern unsigned long compact_zone_order(struct zone *zone, int order,
-                                        gfp_t gfp_mask, bool sync,
-                                        int compact_mode);
+                                        gfp_t gfp_mask, bool sync);
 
 /* Do not skip compaction more than 64 times */
 #define COMPACT_MAX_DEFER_SHIFT 6
@@ -74,8 +70,7 @@ static inline unsigned long compaction_suitable(struct zone *zone, int order)
 }
 
 static inline unsigned long compact_zone_order(struct zone *zone, int order,
-                                               gfp_t gfp_mask, bool sync,
-                                               int compact_mode)
+                                               gfp_t gfp_mask, bool sync)
 {
         return COMPACT_CONTINUE;
 }
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index 16508bcddacc..cb4c1eb7778e 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -92,3 +92,11 @@
 #if !defined(__noclone)
 #define __noclone       /* not needed */
 #endif
+
+/*
+ * A trick to suppress uninitialized variable warning without generating any
+ * code
+ */
+#define uninitialized_var(x) x = x
+
+#define __always_inline         inline __attribute__((always_inline))
diff --git a/include/linux/compiler-gcc3.h b/include/linux/compiler-gcc3.h
index b721129e0469..37d412436d0f 100644
--- a/include/linux/compiler-gcc3.h
+++ b/include/linux/compiler-gcc3.h
@@ -21,11 +21,3 @@
 #   error "GCOV profiling support for gcc versions below 3.4 not included"
 # endif /* __GNUC_MINOR__ */
 #endif /* CONFIG_GCOV_KERNEL */
-
-/*
- * A trick to suppress uninitialized variable warning without generating any
- * code
- */
-#define uninitialized_var(x) x = x
-
-#define __always_inline         inline __attribute__((always_inline))
diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
index fcfa5b9a4317..64b7c003fd7a 100644
--- a/include/linux/compiler-gcc4.h
+++ b/include/linux/compiler-gcc4.h
@@ -12,13 +12,6 @@
 #define __used                  __attribute__((__used__))
 #define __must_check            __attribute__((warn_unused_result))
 #define __compiler_offsetof(a,b) __builtin_offsetof(a,b)
-#define __always_inline         inline __attribute__((always_inline))
-
-/*
- * A trick to suppress uninitialized variable warning without generating any
- * code
- */
-#define uninitialized_var(x) x = x
 
 #if __GNUC_MINOR__ >= 3
 /* Mark functions as cold. gcc will assume any path leading to a call
@@ -53,7 +46,6 @@
 #define __noclone       __attribute__((__noclone__))
 
 #endif
-
 #endif
 
 #if __GNUC_MINOR__ > 0
diff --git a/include/linux/crc32.h b/include/linux/crc32.h
index e20dd1f9b40a..391a259b2cc9 100644
--- a/include/linux/crc32.h
+++ b/include/linux/crc32.h
@@ -11,7 +11,7 @@
 extern u32  crc32_le(u32 crc, unsigned char const *p, size_t len);
 extern u32  crc32_be(u32 crc, unsigned char const *p, size_t len);
 
-#define crc32(seed, data, length)  crc32_le(seed, (unsigned char const *)data, length)
+#define crc32(seed, data, length)  crc32_le(seed, (unsigned char const *)(data), length)
 
 /*
  * Helpers for hash table generation of ethernet nics:
diff --git a/include/linux/dw_dmac.h b/include/linux/dw_dmac.h
index c8aad713a046..6998d9376ef9 100644
--- a/include/linux/dw_dmac.h
+++ b/include/linux/dw_dmac.h
@@ -16,9 +16,18 @@
 /**
  * struct dw_dma_platform_data - Controller configuration parameters
  * @nr_channels: Number of channels supported by hardware (max 8)
+ * @is_private: The device channels should be marked as private and not for
+ *      by the general purpose DMA channel allocator.
  */
 struct dw_dma_platform_data {
         unsigned int    nr_channels;
+        bool            is_private;
+#define CHAN_ALLOCATION_ASCENDING       0       /* zero to seven */
+#define CHAN_ALLOCATION_DESCENDING      1       /* seven to zero */
+        unsigned char   chan_allocation_order;
+#define CHAN_PRIORITY_ASCENDING         0       /* chan0 highest */
+#define CHAN_PRIORITY_DESCENDING        1       /* chan7 highest */
+        unsigned char   chan_priority;
 };
 
 /**
@@ -33,6 +42,30 @@ enum dw_dma_slave_width {
         DW_DMA_SLAVE_WIDTH_32BIT,
 };
 
+/* bursts size */
+enum dw_dma_msize {
+        DW_DMA_MSIZE_1,
+        DW_DMA_MSIZE_4,
+        DW_DMA_MSIZE_8,
+        DW_DMA_MSIZE_16,
+        DW_DMA_MSIZE_32,
+        DW_DMA_MSIZE_64,
+        DW_DMA_MSIZE_128,
+        DW_DMA_MSIZE_256,
+};
+
+/* flow controller */
+enum dw_dma_fc {
+        DW_DMA_FC_D_M2M,
+        DW_DMA_FC_D_M2P,
+        DW_DMA_FC_D_P2M,
+        DW_DMA_FC_D_P2P,
+        DW_DMA_FC_P_P2M,
+        DW_DMA_FC_SP_P2P,
+        DW_DMA_FC_P_M2P,
+        DW_DMA_FC_DP_P2P,
+};
+
 /**
  * struct dw_dma_slave - Controller-specific information about a slave
  *
@@ -44,6 +77,11 @@ enum dw_dma_slave_width {
  * @reg_width: peripheral register width
  * @cfg_hi: Platform-specific initializer for the CFG_HI register
  * @cfg_lo: Platform-specific initializer for the CFG_LO register
+ * @src_master: src master for transfers on allocated channel.
+ * @dst_master: dest master for transfers on allocated channel.
+ * @src_msize: src burst size.
+ * @dst_msize: dest burst size.
+ * @fc: flow controller for DMA transfer
  */
 struct dw_dma_slave {
         struct device           *dma_dev;
@@ -52,6 +90,11 @@ struct dw_dma_slave {
         enum dw_dma_slave_width reg_width;
         u32                     cfg_hi;
         u32                     cfg_lo;
+        u8                      src_master;
+        u8                      dst_master;
+        u8                      src_msize;
+        u8                      dst_msize;
+        u8                      fc;
 };
 
 /* Platform-configurable bits in CFG_HI */
@@ -62,7 +105,6 @@ struct dw_dma_slave {
 #define DWC_CFGH_DST_PER(x)     ((x) << 11)
 
 /* Platform-configurable bits in CFG_LO */
-#define DWC_CFGL_PRIO(x)        ((x) << 5)      /* priority */
 #define DWC_CFGL_LOCK_CH_XFER   (0 << 12)       /* scope of LOCK_CH */
 #define DWC_CFGL_LOCK_CH_BLOCK  (1 << 12)
 #define DWC_CFGL_LOCK_CH_XACT   (2 << 12)
diff --git a/include/linux/err.h b/include/linux/err.h
index 448afc12c78a..f2edce25a76b 100644
--- a/include/linux/err.h
+++ b/include/linux/err.h
@@ -52,6 +52,14 @@ static inline void * __must_check ERR_CAST(const void *ptr)
         return (void *) ptr;
 }
 
+static inline int __must_check PTR_RET(const void *ptr)
+{
+        if (IS_ERR(ptr))
+                return PTR_ERR(ptr);
+        else
+                return 0;
+}
+
 #endif
 
 #endif /* _LINUX_ERR_H */
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index aac3e2eeb4fd..b297f288f6eb 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -13,6 +13,9 @@
 #ifndef _LINUX_ETHTOOL_H
 #define _LINUX_ETHTOOL_H
 
+#ifdef __KERNEL__
+#include <linux/compat.h>
+#endif
 #include <linux/types.h>
 #include <linux/if_ether.h>
 
@@ -450,6 +453,37 @@ struct ethtool_rxnfc {
         __u32                           rule_locs[0];
 };
 
+#ifdef __KERNEL__
+#ifdef CONFIG_COMPAT
+
+struct compat_ethtool_rx_flow_spec {
+        u32             flow_type;
+        union {
+                struct ethtool_tcpip4_spec              tcp_ip4_spec;
+                struct ethtool_tcpip4_spec              udp_ip4_spec;
+                struct ethtool_tcpip4_spec              sctp_ip4_spec;
+                struct ethtool_ah_espip4_spec           ah_ip4_spec;
+                struct ethtool_ah_espip4_spec           esp_ip4_spec;
+                struct ethtool_usrip4_spec              usr_ip4_spec;
+                struct ethhdr                           ether_spec;
+                u8                                      hdata[72];
+        } h_u, m_u;
+        compat_u64      ring_cookie;
+        u32             location;
+};
+
+struct compat_ethtool_rxnfc {
+        u32                             cmd;
+        u32                             flow_type;
+        compat_u64                      data;
+        struct compat_ethtool_rx_flow_spec fs;
+        u32                             rule_cnt;
+        u32                             rule_locs[0];
+};
+
+#endif /* CONFIG_COMPAT */
+#endif /* __KERNEL__ */
+
 /**
  * struct ethtool_rxfh_indir - command to get or set RX flow hash indirection
  * @cmd: Specific command number - %ETHTOOL_GRXFHINDIR or %ETHTOOL_SRXFHINDIR
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 7061a8587ee3..12529e966350 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -662,9 +662,9 @@ struct address_space {
 
 struct block_device {
         dev_t                   bd_dev;  /* not a kdev_t - it's a search key */
+        int                     bd_openers;
         struct inode *          bd_inode;       /* will die */
         struct super_block *    bd_super;
-        int                     bd_openers;
         struct mutex            bd_mutex;       /* open/close mutex */
         struct list_head        bd_inodes;
         void *                  bd_claiming;
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index dca31761b311..bfb8f934521e 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -35,6 +35,7 @@ struct vm_area_struct;
 #define ___GFP_NOTRACK          0
 #endif
 #define ___GFP_NO_KSWAPD        0x400000u
+#define ___GFP_OTHER_NODE       0x800000u
 
 /*
  * GFP bitmasks..
@@ -83,6 +84,7 @@ struct vm_area_struct;
 #define __GFP_NOTRACK   ((__force gfp_t)___GFP_NOTRACK)  /* Don't track with kmemcheck */
 
 #define __GFP_NO_KSWAPD ((__force gfp_t)___GFP_NO_KSWAPD)
+#define __GFP_OTHER_NODE ((__force gfp_t)___GFP_OTHER_NODE) /* On behalf of other node */
 
 /*
  * This may seem redundant, but it's a way of annotating false positives vs.
diff --git a/arch/arm/plat-pxa/include/plat/i2c.h b/include/linux/i2c/pxa-i2c.h
index 1a9f65e6ec0f..1a9f65e6ec0f 100644
--- a/arch/arm/plat-pxa/include/plat/i2c.h
+++ b/include/linux/i2c/pxa-i2c.h
diff --git a/include/linux/if_ppp.h b/include/linux/if_ppp.h
index fcef103aa3f6..c9ad38322576 100644
--- a/include/linux/if_ppp.h
+++ b/include/linux/if_ppp.h
@@ -114,14 +114,14 @@ struct pppol2tp_ioc_stats {
         __u16           tunnel_id;      /* redundant */
         __u16           session_id;     /* if zero, get tunnel stats */
         __u32           using_ipsec:1;  /* valid only for session_id == 0 */
-        aligned_u64     tx_packets;
-        aligned_u64     tx_bytes;
-        aligned_u64     tx_errors;
-        aligned_u64     rx_packets;
-        aligned_u64     rx_bytes;
-        aligned_u64     rx_seq_discards;
-        aligned_u64     rx_oos_packets;
-        aligned_u64     rx_errors;
+        __aligned_u64   tx_packets;
+        __aligned_u64   tx_bytes;
+        __aligned_u64   tx_errors;
+        __aligned_u64   rx_packets;
+        __aligned_u64   rx_bytes;
+        __aligned_u64   rx_seq_discards;
+        __aligned_u64   rx_oos_packets;
+        __aligned_u64   rx_errors;
 };
 
 #define ifr__name       b.ifr_ifrn.ifrn_name
diff --git a/include/linux/kbd_kern.h b/include/linux/kbd_kern.h
index 4b0761cc7dd9..ec2d17bc1f1e 100644
--- a/include/linux/kbd_kern.h
+++ b/include/linux/kbd_kern.h
@@ -159,7 +159,7 @@ static inline void con_schedule_flip(struct tty_struct *t)
         if (t->buf.tail != NULL)
                 t->buf.tail->commit = t->buf.tail->used;
         spin_unlock_irqrestore(&t->buf.lock, flags);
-        schedule_delayed_work(&t->buf.work, 0);
+        schedule_work(&t->buf.work);
 }
 
 #endif
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 2fe6e84894a4..00cec4dc0ae2 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -187,14 +187,76 @@ NORET_TYPE void do_exit(long error_code)
         ATTRIB_NORET;
 NORET_TYPE void complete_and_exit(struct completion *, long)
         ATTRIB_NORET;
+
+/* Internal, do not use. */
+int __must_check _kstrtoul(const char *s, unsigned int base, unsigned long *res);
+int __must_check _kstrtol(const char *s, unsigned int base, long *res);
+
+int __must_check kstrtoull(const char *s, unsigned int base, unsigned long long *res);
+int __must_check kstrtoll(const char *s, unsigned int base, long long *res);
+static inline int __must_check kstrtoul(const char *s, unsigned int base, unsigned long *res)
+{
+        /*
+         * We want to shortcut function call, but
+         * __builtin_types_compatible_p(unsigned long, unsigned long long) = 0.
+         */
+        if (sizeof(unsigned long) == sizeof(unsigned long long) &&
+            __alignof__(unsigned long) == __alignof__(unsigned long long))
+                return kstrtoull(s, base, (unsigned long long *)res);
+        else
+                return _kstrtoul(s, base, res);
+}
+
+static inline int __must_check kstrtol(const char *s, unsigned int base, long *res)
+{
+        /*
+         * We want to shortcut function call, but
+         * __builtin_types_compatible_p(long, long long) = 0.
+         */
+        if (sizeof(long) == sizeof(long long) &&
+            __alignof__(long) == __alignof__(long long))
+                return kstrtoll(s, base, (long long *)res);
+        else
+                return _kstrtol(s, base, res);
+}
+
+int __must_check kstrtouint(const char *s, unsigned int base, unsigned int *res);
+int __must_check kstrtoint(const char *s, unsigned int base, int *res);
+
+static inline int __must_check kstrtou64(const char *s, unsigned int base, u64 *res)
+{
+        return kstrtoull(s, base, res);
+}
+
+static inline int __must_check kstrtos64(const char *s, unsigned int base, s64 *res)
+{
+        return kstrtoll(s, base, res);
+}
+
+static inline int __must_check kstrtou32(const char *s, unsigned int base, u32 *res)
+{
+        return kstrtouint(s, base, res);
+}
+
+static inline int __must_check kstrtos32(const char *s, unsigned int base, s32 *res)
+{
+        return kstrtoint(s, base, res);
+}
+
+int __must_check kstrtou16(const char *s, unsigned int base, u16 *res);
+int __must_check kstrtos16(const char *s, unsigned int base, s16 *res);
+int __must_check kstrtou8(const char *s, unsigned int base, u8 *res);
+int __must_check kstrtos8(const char *s, unsigned int base, s8 *res);
+
 extern unsigned long simple_strtoul(const char *,char **,unsigned int);
 extern long simple_strtol(const char *,char **,unsigned int);
 extern unsigned long long simple_strtoull(const char *,char **,unsigned int);
 extern long long simple_strtoll(const char *,char **,unsigned int);
-extern int __must_check strict_strtoul(const char *, unsigned int, unsigned long *);
-extern int __must_check strict_strtol(const char *, unsigned int, long *);
-extern int __must_check strict_strtoull(const char *, unsigned int, unsigned long long *);
-extern int __must_check strict_strtoll(const char *, unsigned int, long long *);
+#define strict_strtoul  kstrtoul
+#define strict_strtol   kstrtol
+#define strict_strtoull kstrtoull
+#define strict_strtoll  kstrtoll
+
 extern int sprintf(char * buf, const char * fmt, ...)
         __attribute__ ((format (printf, 2, 3)));
 extern int vsprintf(char *buf, const char *, va_list)
diff --git a/include/linux/kthread.h b/include/linux/kthread.h
index 7ff16f7d3ed4..1e923e5e88e8 100644
--- a/include/linux/kthread.h
+++ b/include/linux/kthread.h
@@ -4,10 +4,15 @@
 #include <linux/err.h>
 #include <linux/sched.h>
 
-struct task_struct *kthread_create(int (*threadfn)(void *data),
-                                   void *data,
-                                   const char namefmt[], ...)
-        __attribute__((format(printf, 3, 4)));
+struct task_struct *kthread_create_on_node(int (*threadfn)(void *data),
+                                           void *data,
+                                           int node,
+                                           const char namefmt[], ...)
+        __attribute__((format(printf, 4, 5)));
+
+#define kthread_create(threadfn, data, namefmt, arg...) \
+        kthread_create_on_node(threadfn, data, -1, namefmt, ##arg)
+
 
 /**
  * kthread_run - create and wake a thread.
@@ -34,6 +39,7 @@ void *kthread_data(struct task_struct *k);
 
 int kthreadd(void *unused);
 extern struct task_struct *kthreadd_task;
+extern int tsk_fork_get_node(struct task_struct *tsk);
 
 /*
  * Simple work processor based on kthread.
diff --git a/include/linux/led-lm3530.h b/include/linux/led-lm3530.h
new file mode 100644
index 000000000000..bb69d20da0dc
--- /dev/null
+++ b/include/linux/led-lm3530.h
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2011 ST-Ericsson SA.
+ * Copyright (C) 2009 Motorola, Inc.
+ *
+ * License Terms: GNU General Public License v2
+ *
+ * Simple driver for National Semiconductor LM35330 Backlight driver chip
+ *
+ * Author: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>
+ * based on leds-lm3530.c by Dan Murphy <D.Murphy@motorola.com>
+ */
+
+#ifndef _LINUX_LED_LM3530_H__
+#define _LINUX_LED_LM3530_H__
+
+#define LM3530_FS_CURR_5mA              (0) /* Full Scale Current */
+#define LM3530_FS_CURR_8mA              (1)
+#define LM3530_FS_CURR_12mA             (2)
+#define LM3530_FS_CURR_15mA             (3)
+#define LM3530_FS_CURR_19mA             (4)
+#define LM3530_FS_CURR_22mA             (5)
+#define LM3530_FS_CURR_26mA             (6)
+#define LM3530_FS_CURR_29mA             (7)
+
+#define LM3530_ALS_AVRG_TIME_32ms       (0) /* ALS Averaging Time */
+#define LM3530_ALS_AVRG_TIME_64ms       (1)
+#define LM3530_ALS_AVRG_TIME_128ms      (2)
+#define LM3530_ALS_AVRG_TIME_256ms      (3)
+#define LM3530_ALS_AVRG_TIME_512ms      (4)
+#define LM3530_ALS_AVRG_TIME_1024ms     (5)
+#define LM3530_ALS_AVRG_TIME_2048ms     (6)
+#define LM3530_ALS_AVRG_TIME_4096ms     (7)
+
+#define LM3530_RAMP_TIME_1ms            (0) /* Brigtness Ramp Time */
+#define LM3530_RAMP_TIME_130ms          (1) /* Max to 0 and vice versa */
+#define LM3530_RAMP_TIME_260ms          (2)
+#define LM3530_RAMP_TIME_520ms          (3)
+#define LM3530_RAMP_TIME_1s             (4)
+#define LM3530_RAMP_TIME_2s             (5)
+#define LM3530_RAMP_TIME_4s             (6)
+#define LM3530_RAMP_TIME_8s             (7)
+
+/* ALS Resistor Select */
+#define LM3530_ALS_IMPD_Z               (0x00) /* ALS Impedence */
+#define LM3530_ALS_IMPD_13_53kOhm       (0x01)
+#define LM3530_ALS_IMPD_9_01kOhm        (0x02)
+#define LM3530_ALS_IMPD_5_41kOhm        (0x03)
+#define LM3530_ALS_IMPD_2_27kOhm        (0x04)
+#define LM3530_ALS_IMPD_1_94kOhm        (0x05)
+#define LM3530_ALS_IMPD_1_81kOhm        (0x06)
+#define LM3530_ALS_IMPD_1_6kOhm         (0x07)
+#define LM3530_ALS_IMPD_1_138kOhm       (0x08)
+#define LM3530_ALS_IMPD_1_05kOhm        (0x09)
+#define LM3530_ALS_IMPD_1_011kOhm       (0x0A)
+#define LM3530_ALS_IMPD_941Ohm          (0x0B)
+#define LM3530_ALS_IMPD_759Ohm          (0x0C)
+#define LM3530_ALS_IMPD_719Ohm          (0x0D)
+#define LM3530_ALS_IMPD_700Ohm          (0x0E)
+#define LM3530_ALS_IMPD_667Ohm          (0x0F)
+
+enum lm3530_mode {
+        LM3530_BL_MODE_MANUAL = 0,      /* "man" */
+        LM3530_BL_MODE_ALS,             /* "als" */
+        LM3530_BL_MODE_PWM,             /* "pwm" */
+};
+
+/* ALS input select */
+enum lm3530_als_mode {
+        LM3530_INPUT_AVRG = 0,  /* ALS1 and ALS2 input average */
+        LM3530_INPUT_ALS1,      /* ALS1 Input */
+        LM3530_INPUT_ALS2,      /* ALS2 Input */
+        LM3530_INPUT_CEIL,      /* Max of ALS1 and ALS2 */
+};
+
+/**
+ * struct lm3530_platform_data
+ * @mode: mode of operation i.e. Manual, ALS or PWM
+ * @als_input_mode: select source of ALS input - ALS1/2 or average
+ * @max_current: full scale LED current
+ * @pwm_pol_hi: PWM input polarity - active high/active low
+ * @als_avrg_time: ALS input averaging time
+ * @brt_ramp_law: brightness mapping mode - exponential/linear
+ * @brt_ramp_fall: rate of fall of led current
+ * @brt_ramp_rise: rate of rise of led current
+ * @als1_resistor_sel: internal resistance from ALS1 input to ground
+ * @als2_resistor_sel: internal resistance from ALS2 input to ground
+ * @brt_val: brightness value (0-255)
+ */
+struct lm3530_platform_data {
+        enum lm3530_mode mode;
+        enum lm3530_als_mode als_input_mode;
+
+        u8 max_current;
+        bool pwm_pol_hi;
+        u8 als_avrg_time;
+
+        bool brt_ramp_law;
+        u8 brt_ramp_fall;
+        u8 brt_ramp_rise;
+
+        u8 als1_resistor_sel;
+        u8 als2_resistor_sel;
+
+        u8 brt_val;
+};
+
+#endif  /* _LINUX_LED_LM3530_H__ */
diff --git a/include/linux/leds.h b/include/linux/leds.h
index 0f19df9e37b0..383811d9af83 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -194,11 +194,11 @@ struct gpio_led {
 
 struct gpio_led_platform_data {
         int             num_leds;
-        struct gpio_led *leds;
+        const struct gpio_led *leds;
 
 #define GPIO_LED_NO_BLINK_LOW   0       /* No blink GPIO state low */
 #define GPIO_LED_NO_BLINK_HIGH  1       /* No blink GPIO state high */
-#define GPIO_LED_BLINK          2       /* Plase, blink */
+#define GPIO_LED_BLINK          2       /* Please, blink */
         int             (*gpio_blink_set)(unsigned gpio, int state,
                                         unsigned long *delay_on,
                                         unsigned long *delay_off);
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index f512e189be5a..5bb7be2628ca 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -62,6 +62,7 @@ extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
                                         gfp_t gfp_mask);
 extern void mem_cgroup_add_lru_list(struct page *page, enum lru_list lru);
 extern void mem_cgroup_del_lru_list(struct page *page, enum lru_list lru);
+extern void mem_cgroup_rotate_reclaimable_page(struct page *page);
 extern void mem_cgroup_rotate_lru_list(struct page *page, enum lru_list lru);
 extern void mem_cgroup_del_lru(struct page *page);
 extern void mem_cgroup_move_lists(struct page *page,
@@ -96,7 +97,7 @@ extern struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem);
 
 extern int
 mem_cgroup_prepare_migration(struct page *page,
-        struct page *newpage, struct mem_cgroup **ptr);
+        struct page *newpage, struct mem_cgroup **ptr, gfp_t gfp_mask);
 extern void mem_cgroup_end_migration(struct mem_cgroup *mem,
         struct page *oldpage, struct page *newpage, bool migration_ok);
 
@@ -211,6 +212,11 @@ static inline void mem_cgroup_del_lru_list(struct page *page, int lru)
         return ;
 }
 
+static inline inline void mem_cgroup_rotate_reclaimable_page(struct page *page)
+{
+        return ;
+}
+
 static inline void mem_cgroup_rotate_lru_list(struct page *page, int lru)
 {
         return ;
@@ -249,7 +255,7 @@ static inline struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem)
 
 static inline int
 mem_cgroup_prepare_migration(struct page *page, struct page *newpage,
-        struct mem_cgroup **ptr)
+        struct mem_cgroup **ptr, gfp_t gfp_mask)
 {
         return 0;
 }
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 581703d86fbd..294104e0891d 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -151,6 +151,7 @@ extern pgprot_t protection_map[16];
 #define FAULT_FLAG_NONLINEAR    0x02    /* Fault was via a nonlinear mapping */
 #define FAULT_FLAG_MKWRITE      0x04    /* Fault was mkwrite of existing pte */
 #define FAULT_FLAG_ALLOW_RETRY  0x08    /* Retry fault if blocking */
+#define FAULT_FLAG_RETRY_NOWAIT 0x10    /* Don't drop mmap_sem and wait when retrying */
 
 /*
  * This interface is used by x86 PAT code to identify a pfn mapping that is
@@ -859,7 +860,14 @@ extern void pagefault_out_of_memory(void);
 
 #define offset_in_page(p)       ((unsigned long)(p) & ~PAGE_MASK)
 
+/*
+ * Flags passed to __show_mem() and __show_free_areas() to suppress output in
+ * various contexts.
+ */
+#define SHOW_MEM_FILTER_NODES   (0x0001u)       /* filter disallowed nodes */
+
 extern void show_free_areas(void);
+extern void __show_free_areas(unsigned int flags);
 
 int shmem_lock(struct file *file, int lock, struct user_struct *user);
 struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags);
@@ -906,6 +914,9 @@ unsigned long unmap_vmas(struct mmu_gather **tlb,
  * @pgd_entry: if set, called for each non-empty PGD (top-level) entry
  * @pud_entry: if set, called for each non-empty PUD (2nd-level) entry
  * @pmd_entry: if set, called for each non-empty PMD (3rd-level) entry
+ *             this handler is required to be able to handle
+ *             pmd_trans_huge() pmds.  They may simply choose to
+ *             split_huge_page() instead of handling it explicitly.
  * @pte_entry: if set, called for each non-empty PTE (4th-level) entry
  * @pte_hole: if set, called for each hole at all levels
  * @hugetlb_entry: if set, called for each hugetlb entry
@@ -1348,6 +1359,7 @@ extern void calculate_zone_inactive_ratio(struct zone *zone);
 extern void mem_init(void);
 extern void __init mmap_init(void);
 extern void show_mem(void);
+extern void __show_mem(unsigned int flags);
 extern void si_meminfo(struct sysinfo * val);
 extern void si_meminfo_node(struct sysinfo *val, int nid);
 extern int after_bootmem;
@@ -1537,6 +1549,8 @@ struct page *follow_page(struct vm_area_struct *, unsigned long address,
 #define FOLL_GET        0x04    /* do get_page on page */
 #define FOLL_DUMP       0x08    /* give error on hole if it would be zero */
 #define FOLL_FORCE      0x10    /* get_user_pages read/write w/o permission */
+#define FOLL_NOWAIT     0x20    /* if a disk transfer is needed, start the IO
+                                 * and return without waiting upon it */
 #define FOLL_MLOCK      0x40    /* mark page as mlocked */
 #define FOLL_SPLIT      0x80    /* don't return transhuge pages, split them */
 #define FOLL_HWPOISON   0x100   /* check page is hwpoisoned */
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 26bc4e2cd275..02aa5619709b 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -237,8 +237,9 @@ struct mm_struct {
         atomic_t mm_users;                      /* How many users with user space? */
         atomic_t mm_count;                      /* How many references to "struct mm_struct" (users count as 1) */
         int map_count;                          /* number of VMAs */
-        struct rw_semaphore mmap_sem;
+
         spinlock_t page_table_lock;             /* Protects page tables and some counters */
+        struct rw_semaphore mmap_sem;
 
         struct list_head mmlist;                /* List of maybe swapped mm's.  These are globally strung
                                                  * together off init_mm.mmlist, and are protected
@@ -281,6 +282,9 @@ struct mm_struct {
         unsigned int token_priority;
         unsigned int last_interval;
 
+        /* How many tasks sharing this mm are OOM_DISABLE */
+        atomic_t oom_disable_count;
+
         unsigned long flags; /* Must use atomic bitops to access the bits */
 
         struct core_state *core_state; /* coredumping support */
@@ -313,8 +317,6 @@ struct mm_struct {
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
         pgtable_t pmd_huge_pte; /* protected by page_table_lock */
 #endif
-        /* How many tasks sharing this mm are OOM_DISABLE */
-        atomic_t oom_disable_count;
 };
 
 /* Future-safe accessor for struct mm_struct's cpu_vm_mask. */
diff --git a/include/linux/netfilter/ipset/ip_set_getport.h b/include/linux/netfilter/ipset/ip_set_getport.h
index 3882a81a3b3c..5aebd170f899 100644
--- a/include/linux/netfilter/ipset/ip_set_getport.h
+++ b/include/linux/netfilter/ipset/ip_set_getport.h
@@ -18,4 +18,14 @@ static inline bool ip_set_get_ip6_port(const struct sk_buff *skb, bool src,
 extern bool ip_set_get_ip_port(const struct sk_buff *skb, u8 pf, bool src,
                                 __be16 *port);
 
+static inline bool ip_set_proto_with_ports(u8 proto)
+{
+        switch (proto) {
+        case IPPROTO_TCP:
+        case IPPROTO_UDP:
+                return true;
+        }
+        return false;
+}
+
 #endif /*_IP_SET_GETPORT_H*/
diff --git a/include/linux/netfilter/nfnetlink_log.h b/include/linux/netfilter/nfnetlink_log.h
index ea9b8d380527..90c2c9575bac 100644
--- a/include/linux/netfilter/nfnetlink_log.h
+++ b/include/linux/netfilter/nfnetlink_log.h
@@ -28,8 +28,8 @@ struct nfulnl_msg_packet_hw {
 };
 
 struct nfulnl_msg_packet_timestamp {
-        aligned_be64    sec;
-        aligned_be64    usec;
+        __aligned_be64  sec;
+        __aligned_be64  usec;
 };
 
 enum nfulnl_attr_type {
diff --git a/include/linux/netfilter/nfnetlink_queue.h b/include/linux/netfilter/nfnetlink_queue.h
index 2455fe5f4e01..af94e0014ebd 100644
--- a/include/linux/netfilter/nfnetlink_queue.h
+++ b/include/linux/netfilter/nfnetlink_queue.h
@@ -25,8 +25,8 @@ struct nfqnl_msg_packet_hw {
 };
 
 struct nfqnl_msg_packet_timestamp {
-        aligned_be64    sec;
-        aligned_be64    usec;
+        __aligned_be64  sec;
+        __aligned_be64  usec;
 };
 
 enum nfqnl_attr_type {
diff --git a/include/linux/netfilter/xt_connbytes.h b/include/linux/netfilter/xt_connbytes.h
index 92fcbb0d193e..f1d6c15bd9e3 100644
--- a/include/linux/netfilter/xt_connbytes.h
+++ b/include/linux/netfilter/xt_connbytes.h
@@ -17,8 +17,8 @@ enum xt_connbytes_direction {
 
 struct xt_connbytes_info {
         struct {
-                aligned_u64 from;       /* count to be matched */
-                aligned_u64 to;         /* count to be matched */
+                __aligned_u64 from;     /* count to be matched */
+                __aligned_u64 to;       /* count to be matched */
         } count;
         __u8 what;              /* ipt_connbytes_what */
         __u8 direction; /* ipt_connbytes_direction */
diff --git a/include/linux/netfilter/xt_quota.h b/include/linux/netfilter/xt_quota.h
index ca6e03e47a17..9314723f39ca 100644
--- a/include/linux/netfilter/xt_quota.h
+++ b/include/linux/netfilter/xt_quota.h
@@ -13,7 +13,7 @@ struct xt_quota_priv;
 struct xt_quota_info {
         __u32 flags;
         __u32 pad;
-        aligned_u64 quota;
+        __aligned_u64 quota;
 
         /* Used internally by the kernel */
         struct xt_quota_priv    *master;
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 0db8037e2725..811183de1ef5 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -196,7 +196,7 @@ static inline int __TestClearPage##uname(struct page *page) { return 0; }
 
 struct page;    /* forward declaration */
 
-TESTPAGEFLAG(Locked, locked) TESTSETFLAG(Locked, locked)
+TESTPAGEFLAG(Locked, locked)
 PAGEFLAG(Error, error) TESTCLEARFLAG(Error, error)
 PAGEFLAG(Referenced, referenced) TESTCLEARFLAG(Referenced, referenced)
 PAGEFLAG(Dirty, dirty) TESTSCFLAG(Dirty, dirty) __CLEARPAGEFLAG(Dirty, dirty)
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 9c66e994540f..29ebba54c238 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -455,8 +455,9 @@ int add_to_page_cache_locked(struct page *page, struct address_space *mapping,
                                 pgoff_t index, gfp_t gfp_mask);
 int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
                                 pgoff_t index, gfp_t gfp_mask);
-extern void remove_from_page_cache(struct page *page);
-extern void __remove_from_page_cache(struct page *page);
+extern void delete_from_page_cache(struct page *page);
+extern void __delete_from_page_cache(struct page *page);
+int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask);
 
 /*
  * Like add_to_page_cache_locked, but used to add newly allocated pages:
diff --git a/include/linux/pwm_backlight.h b/include/linux/pwm_backlight.h
index e031e1a486d9..5e3e25a3c9c3 100644
--- a/include/linux/pwm_backlight.h
+++ b/include/linux/pwm_backlight.h
@@ -4,6 +4,8 @@
 #ifndef __LINUX_PWM_BACKLIGHT_H
 #define __LINUX_PWM_BACKLIGHT_H
 
+#include <linux/backlight.h>
+
 struct platform_pwm_backlight_data {
         int pwm_id;
         unsigned int max_brightness;
@@ -13,6 +15,7 @@ struct platform_pwm_backlight_data {
         int (*init)(struct device *dev);
         int (*notify)(struct device *dev, int brightness);
         void (*exit)(struct device *dev);
+        int (*check_fb)(struct device *dev, struct fb_info *info);
 };
 
 #endif
diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index e9fd04ca1e51..830e65dc01ee 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -27,18 +27,15 @@
 struct anon_vma {
         struct anon_vma *root;  /* Root of this anon_vma tree */
         spinlock_t lock;        /* Serialize access to vma list */
-#if defined(CONFIG_KSM) || defined(CONFIG_MIGRATION)
-
         /*
-         * The external_refcount is taken by either KSM or page migration
-         * to take a reference to an anon_vma when there is no
+         * The refcount is taken on an anon_vma when there is no
          * guarantee that the vma of page tables will exist for
          * the duration of the operation. A caller that takes
          * the reference is responsible for clearing up the
          * anon_vma if they are the last user on release
          */
-        atomic_t external_refcount;
-#endif
+        atomic_t refcount;
+
         /*
          * NOTE: the LSB of the head.next is set by
          * mm_take_all_locks() _after_ taking the above lock. So the
@@ -71,42 +68,19 @@ struct anon_vma_chain {
 };
 
 #ifdef CONFIG_MMU
-#if defined(CONFIG_KSM) || defined(CONFIG_MIGRATION)
-static inline void anonvma_external_refcount_init(struct anon_vma *anon_vma)
-{
-        atomic_set(&anon_vma->external_refcount, 0);
-}
-
-static inline int anonvma_external_refcount(struct anon_vma *anon_vma)
-{
-        return atomic_read(&anon_vma->external_refcount);
-}
-
 static inline void get_anon_vma(struct anon_vma *anon_vma)
 {
-        atomic_inc(&anon_vma->external_refcount);
+        atomic_inc(&anon_vma->refcount);
 }
 
-void drop_anon_vma(struct anon_vma *);
-#else
-static inline void anonvma_external_refcount_init(struct anon_vma *anon_vma)
-{
-}
+void __put_anon_vma(struct anon_vma *anon_vma);
 
-static inline int anonvma_external_refcount(struct anon_vma *anon_vma)
-{
-        return 0;
-}
-
-static inline void get_anon_vma(struct anon_vma *anon_vma)
+static inline void put_anon_vma(struct anon_vma *anon_vma)
 {
+        if (atomic_dec_and_test(&anon_vma->refcount))
+                __put_anon_vma(anon_vma);
 }
 
-static inline void drop_anon_vma(struct anon_vma *anon_vma)
-{
-}
-#endif /* CONFIG_KSM */
-
 static inline struct anon_vma *page_anon_vma(struct page *page)
 {
         if (((unsigned long)page->mapping & PAGE_MAPPING_FLAGS) !=
@@ -148,7 +122,6 @@ void unlink_anon_vmas(struct vm_area_struct *);
 int anon_vma_clone(struct vm_area_struct *, struct vm_area_struct *);
 int anon_vma_fork(struct vm_area_struct *, struct vm_area_struct *);
 void __anon_vma_link(struct vm_area_struct *);
-void anon_vma_free(struct anon_vma *);
 
 static inline void anon_vma_merge(struct vm_area_struct *vma,
                                   struct vm_area_struct *next)
@@ -157,6 +130,8 @@ static inline void anon_vma_merge(struct vm_area_struct *vma,
         unlink_anon_vmas(next);
 }
 
+struct anon_vma *page_get_anon_vma(struct page *page);
+
 /*
  * rmap interfaces called when adding or removing pte of page
  */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index c15936fe998b..4b601be3dace 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1471,6 +1471,7 @@ struct task_struct {
 #ifdef CONFIG_NUMA
         struct mempolicy *mempolicy;    /* Protected by alloc_lock */
         short il_next;
+        short pref_node_fork;
 #endif
         atomic_t fs_excl;       /* holding fs exclusive resources */
         struct rcu_head rcu;
diff --git a/include/linux/sigma.h b/include/linux/sigma.h
new file mode 100644
index 000000000000..e2accb3164d8
--- /dev/null
+++ b/include/linux/sigma.h
@@ -0,0 +1,60 @@
+/*
+ * Load firmware files from Analog Devices SigmaStudio
+ *
+ * Copyright 2009-2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __SIGMA_FIRMWARE_H__
+#define __SIGMA_FIRMWARE_H__
+
+#include <linux/firmware.h>
+#include <linux/types.h>
+
+struct i2c_client;
+
+#define SIGMA_MAGIC "ADISIGM"
+
+struct sigma_firmware {
+        const struct firmware *fw;
+        size_t pos;
+};
+
+struct sigma_firmware_header {
+        unsigned char magic[7];
+        u8 version;
+        u32 crc;
+};
+
+enum {
+        SIGMA_ACTION_WRITEXBYTES = 0,
+        SIGMA_ACTION_WRITESINGLE,
+        SIGMA_ACTION_WRITESAFELOAD,
+        SIGMA_ACTION_DELAY,
+        SIGMA_ACTION_PLLWAIT,
+        SIGMA_ACTION_NOOP,
+        SIGMA_ACTION_END,
+};
+
+struct sigma_action {
+        u8 instr;
+        u8 len_hi;
+        u16 len;
+        u16 addr;
+        unsigned char payload[];
+};
+
+static inline u32 sigma_action_len(struct sigma_action *sa)
+{
+        return (sa->len_hi << 16) | sa->len;
+}
+
+static inline size_t sigma_action_size(struct sigma_action *sa, u32 payload_len)
+{
+        return sizeof(*sa) + payload_len + (payload_len % 2);
+}
+
+extern int process_sigma_firmware(struct i2c_client *client, const char *name);
+
+#endif
diff --git a/include/linux/slab.h b/include/linux/slab.h
index fa9086647eb7..ad4dd1c8d30a 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -105,7 +105,6 @@ void kmem_cache_destroy(struct kmem_cache *);
 int kmem_cache_shrink(struct kmem_cache *);
 void kmem_cache_free(struct kmem_cache *, void *);
 unsigned int kmem_cache_size(struct kmem_cache *);
-const char *kmem_cache_name(struct kmem_cache *);
 
 /*
  * Please use this macro to create slab caches. Simply specify the
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index 8b6e8ae5d5ca..45ca123e8002 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -32,10 +32,14 @@ enum stat_item {
         DEACTIVATE_TO_TAIL,     /* Cpu slab was moved to the tail of partials */
         DEACTIVATE_REMOTE_FREES,/* Slab contained remotely freed objects */
         ORDER_FALLBACK,         /* Number of times fallback was necessary */
+        CMPXCHG_DOUBLE_CPU_FAIL,/* Failure of this_cpu_cmpxchg_double */
         NR_SLUB_STAT_ITEMS };
 
 struct kmem_cache_cpu {
-        void **freelist;        /* Pointer to first free per cpu object */
+        void **freelist;        /* Pointer to next available object */
+#ifdef CONFIG_CMPXCHG_LOCAL
+        unsigned long tid;      /* Globally unique transaction id */
+#endif
         struct page *page;      /* The slab from which we are allocating */
         int node;               /* The node of the page (or -1 for debug) */
 #ifdef CONFIG_SLUB_STATS
@@ -70,6 +74,7 @@ struct kmem_cache {
         struct kmem_cache_cpu __percpu *cpu_slab;
         /* Used for retriving partial slabs etc */
         unsigned long flags;
+        unsigned long min_partial;
         int size;               /* The size of an object including meta data */
         int objsize;            /* The size of an object without meta data */
         int offset;             /* Free pointer offset. */
@@ -83,7 +88,7 @@ struct kmem_cache {
         void (*ctor)(void *);
         int inuse;              /* Offset to metadata */
         int align;              /* Alignment */
-        unsigned long min_partial;
+        int reserved;           /* Reserved bytes at the end of slabs */
         const char *name;       /* Name (only for display!) */
         struct list_head list;  /* List of slab caches */
 #ifdef CONFIG_SYSFS
diff --git a/include/linux/smp.h b/include/linux/smp.h
index 6dc95cac6b3d..74243c86ba39 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -10,6 +10,7 @@
 #include <linux/types.h>
 #include <linux/list.h>
 #include <linux/cpumask.h>
+#include <linux/init.h>
 
 extern void cpu_idle(void);
 
@@ -114,6 +115,8 @@ int on_each_cpu(smp_call_func_t func, void *info, int wait);
 void smp_prepare_boot_cpu(void);
 
 extern unsigned int setup_max_cpus;
+extern void __init setup_nr_cpu_ids(void);
+extern void __init smp_init(void);
 
 #else /* !SMP */
 
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 4d559325d919..ed6ebe690f4a 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -155,6 +155,15 @@ enum {
 #define SWAP_CLUSTER_MAX 32
 #define COMPACT_CLUSTER_MAX SWAP_CLUSTER_MAX
 
+/*
+ * Ratio between the present memory in the zone and the "gap" that
+ * we're allowing kswapd to shrink in addition to the per-zone high
+ * wmark, even for zones that already have the high wmark satisfied,
+ * in order to provide better per-zone lru behavior. We are ok to
+ * spend not more than 1% of the memory for this zone balancing "gap".
+ */
+#define KSWAPD_ZONE_BALANCE_GAP_RATIO 100
+
 #define SWAP_MAP_MAX    0x3e    /* Max duplication count, in first swap_map */
 #define SWAP_MAP_BAD    0x3f    /* Note pageblock is bad, in first swap_map */
 #define SWAP_HAS_CACHE  0x40    /* Flag page is cached, in first swap_map */
@@ -215,6 +224,7 @@ extern void mark_page_accessed(struct page *);
 extern void lru_add_drain(void);
 extern int lru_add_drain_all(void);
 extern void rotate_reclaimable_page(struct page *page);
+extern void deactivate_page(struct page *page);
 extern void swap_setup(void);
 
 extern void add_page_to_unevictable_list(struct page *page);
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 4e53d4641b38..9f469c700550 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -82,7 +82,7 @@ struct tty_buffer {
 
 
 struct tty_bufhead {
-        struct delayed_work work;
+        struct work_struct work;
         spinlock_t lock;
         struct tty_buffer *head;        /* Queue head */
         struct tty_buffer *tail;        /* Active buffer */
diff --git a/include/linux/types.h b/include/linux/types.h
index c2a9eb44f2fa..176da8c1fbb1 100644
--- a/include/linux/types.h
+++ b/include/linux/types.h
@@ -150,6 +150,12 @@ typedef unsigned long blkcnt_t;
 #define pgoff_t unsigned long
 #endif
 
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+typedef u64 dma_addr_t;
+#else
+typedef u32 dma_addr_t;
+#endif /* dma_addr_t */
+
 #endif /* __KERNEL__ */
 
 /*
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index 833e676d6d92..461c0119664f 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -220,12 +220,12 @@ static inline unsigned long node_page_state(int node,
                 zone_page_state(&zones[ZONE_MOVABLE], item);
 }
 
-extern void zone_statistics(struct zone *, struct zone *);
+extern void zone_statistics(struct zone *, struct zone *, gfp_t gfp);
 
 #else
 
 #define node_page_state(node, item) global_page_state(item)
-#define zone_statistics(_zl,_z) do { } while (0)
+#define zone_statistics(_zl, _z, gfp) do { } while (0)
 
 #endif /* CONFIG_NUMA */
 
diff --git a/include/linux/zlib.h b/include/linux/zlib.h
index 40c49cb3eb51..9c5a6b4de0a3 100644
--- a/include/linux/zlib.h
+++ b/include/linux/zlib.h
@@ -179,11 +179,16 @@ typedef z_stream *z_streamp;
 
                         /* basic functions */
 
-extern int zlib_deflate_workspacesize (void);
+extern int zlib_deflate_workspacesize (int windowBits, int memLevel);
 /*
    Returns the number of bytes that needs to be allocated for a per-
-   stream workspace.  A pointer to this number of bytes should be
-   returned in stream->workspace before calling zlib_deflateInit().
+   stream workspace with the specified parameters.  A pointer to this
+   number of bytes should be returned in stream->workspace before
+   you call zlib_deflateInit() or zlib_deflateInit2().  If you call
+   zlib_deflateInit(), specify windowBits = MAX_WBITS and memLevel =
+   MAX_MEM_LEVEL here.  If you call zlib_deflateInit2(), the windowBits
+   and memLevel parameters passed to zlib_deflateInit2() must not
+   exceed those passed here.
 */
 
 /* 
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 272f59336b73..30b49ed72f0d 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -801,8 +801,6 @@ struct netns_ipvs {
         struct list_head        rs_table[IP_VS_RTAB_SIZE];
         /* ip_vs_app */
         struct list_head        app_list;
-        struct mutex            app_mutex;
-        struct lock_class_key   app_key;        /* mutex debuging */
 
         /* ip_vs_proto */
         #define IP_VS_PROTO_TAB_SIZE    32      /* must be power of 2 */
diff --git a/include/net/snmp.h b/include/net/snmp.h
index 762e2abce889..27461d6dd46f 100644
--- a/include/net/snmp.h
+++ b/include/net/snmp.h
@@ -150,7 +150,7 @@ struct linux_xfrm_mib {
 #define SNMP_UPD_PO_STATS_BH(mib, basefield, addend)    \
         do { \
                 __typeof__(*mib[0]) *ptr = \
-                        __this_cpu_ptr((mib)[!in_softirq()]); \
+                        __this_cpu_ptr((mib)[0]); \
                 ptr->mibs[basefield##PKTS]++; \
                 ptr->mibs[basefield##OCTETS] += addend;\
         } while (0)
@@ -202,7 +202,7 @@ struct linux_xfrm_mib {
 #define SNMP_UPD_PO_STATS64_BH(mib, basefield, addend)                  \
         do {                                                            \
                 __typeof__(*mib[0]) *ptr;                               \
-                ptr = __this_cpu_ptr((mib)[!in_softirq()]);             \
+                ptr = __this_cpu_ptr((mib)[0]);                         \
                 u64_stats_update_begin(&ptr->syncp);                    \
                 ptr->mibs[basefield##PKTS]++;                           \
                 ptr->mibs[basefield##OCTETS] += addend;                 \
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 42a8c32a10e2..cffa5dc66449 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -1430,6 +1430,7 @@ extern void xfrm_spd_getinfo(struct net *net, struct xfrmk_spdinfo *si);
 extern u32 xfrm_replay_seqhi(struct xfrm_state *x, __be32 net_seq);
 extern int xfrm_init_replay(struct xfrm_state *x);
 extern int xfrm_state_mtu(struct xfrm_state *x, int mtu);
+extern int __xfrm_init_state(struct xfrm_state *x, bool init_replay);
 extern int xfrm_init_state(struct xfrm_state *x);
 extern int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb);
 extern int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi,
diff --git a/init/calibrate.c b/init/calibrate.c
index 24fe022c55f9..76ac9194cbc4 100644
--- a/init/calibrate.c
+++ b/init/calibrate.c
@@ -110,8 +110,8 @@ static unsigned long __cpuinit calibrate_delay_direct(void) {return 0;}
 
 /*
  * This is the number of bits of precision for the loops_per_jiffy.  Each
- * bit takes on average 1.5/HZ seconds.  This (like the original) is a little
- * better than 1%
+ * time we refine our estimate after the first takes 1.5/HZ seconds, so try
+ * to start with a good estimate.
  * For the boot cpu we can skip the delay calibration and assign it a value
  * calculated based on the timer frequency.
  * For the rest of the CPUs we cannot assume that the timer frequency is same as
@@ -119,10 +119,72 @@ static unsigned long __cpuinit calibrate_delay_direct(void) {return 0;}
  */
 #define LPS_PREC 8
 
+static unsigned long __cpuinit calibrate_delay_converge(void)
+{
+        /* First stage - slowly accelerate to find initial bounds */
+        unsigned long lpj, lpj_base, ticks, loopadd, loopadd_base, chop_limit;
+        int trials = 0, band = 0, trial_in_band = 0;
+
+        lpj = (1<<12);
+
+        /* wait for "start of" clock tick */
+        ticks = jiffies;
+        while (ticks == jiffies)
+                ; /* nothing */
+        /* Go .. */
+        ticks = jiffies;
+        do {
+                if (++trial_in_band == (1<<band)) {
+                        ++band;
+                        trial_in_band = 0;
+                }
+                __delay(lpj * band);
+                trials += band;
+        } while (ticks == jiffies);
+        /*
+         * We overshot, so retreat to a clear underestimate. Then estimate
+         * the largest likely undershoot. This defines our chop bounds.
+         */
+        trials -= band;
+        loopadd_base = lpj * band;
+        lpj_base = lpj * trials;
+
+recalibrate:
+        lpj = lpj_base;
+        loopadd = loopadd_base;
+
+        /*
+         * Do a binary approximation to get lpj set to
+         * equal one clock (up to LPS_PREC bits)
+         */
+        chop_limit = lpj >> LPS_PREC;
+        while (loopadd > chop_limit) {
+                lpj += loopadd;
+                ticks = jiffies;
+                while (ticks == jiffies)
+                        ; /* nothing */
+                ticks = jiffies;
+                __delay(lpj);
+                if (jiffies != ticks)   /* longer than 1 tick */
+                        lpj -= loopadd;
+                loopadd >>= 1;
+        }
+        /*
+         * If we incremented every single time possible, presume we've
+         * massively underestimated initially, and retry with a higher
+         * start, and larger range. (Only seen on x86_64, due to SMIs)
+         */
+        if (lpj + loopadd * 2 == lpj_base + loopadd_base * 2) {
+                lpj_base = lpj;
+                loopadd_base <<= 2;
+                goto recalibrate;
+        }
+
+        return lpj;
+}
+
 void __cpuinit calibrate_delay(void)
 {
-        unsigned long ticks, loopbit;
-        int lps_precision = LPS_PREC;
         static bool printed;
 
         if (preset_lpj) {
@@ -139,39 +201,9 @@ void __cpuinit calibrate_delay(void)
                         pr_info("Calibrating delay using timer "
                                 "specific routine.. ");
         } else {
-                loops_per_jiffy = (1<<12);
-
                 if (!printed)
                         pr_info("Calibrating delay loop... ");
-                while ((loops_per_jiffy <<= 1) != 0) {
-                        /* wait for "start of" clock tick */
-                        ticks = jiffies;
-                        while (ticks == jiffies)
-                                /* nothing */;
-                        /* Go .. */
-                        ticks = jiffies;
-                        __delay(loops_per_jiffy);
-                        ticks = jiffies - ticks;
-                        if (ticks)
-                                break;
-                }
-
-                /*
-                 * Do a binary approximation to get loops_per_jiffy set to
-                 * equal one clock (up to lps_precision bits)
-                 */
-                loops_per_jiffy >>= 1;
-                loopbit = loops_per_jiffy;
-                while (lps_precision-- && (loopbit >>= 1)) {
-                        loops_per_jiffy |= loopbit;
-                        ticks = jiffies;
-                        while (ticks == jiffies)
-                                /* nothing */;
-                        ticks = jiffies;
-                        __delay(loops_per_jiffy);
-                        if (jiffies != ticks)   /* longer than 1 tick */
-                                loops_per_jiffy &= ~loopbit;
-                }
+                loops_per_jiffy = calibrate_delay_converge();
         }
         if (!printed)
                 pr_cont("%lu.%02lu BogoMIPS (lpj=%lu)\n",
diff --git a/init/do_mounts.c b/init/do_mounts.c
index 2b54bef33b55..3e0112157795 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -293,7 +293,8 @@ static int __init do_mount_root(char *name, char *fs, int flags, void *data)
 
         sys_chdir((const char __user __force *)"/root");
         ROOT_DEV = current->fs->pwd.mnt->mnt_sb->s_dev;
-        printk("VFS: Mounted root (%s filesystem)%s on device %u:%u.\n",
+        printk(KERN_INFO
+               "VFS: Mounted root (%s filesystem)%s on device %u:%u.\n",
                current->fs->pwd.mnt->mnt_sb->s_type->name,
                current->fs->pwd.mnt->mnt_sb->s_flags & MS_RDONLY ?
                " readonly" : "", MAJOR(ROOT_DEV), MINOR(ROOT_DEV));
diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c
index 6e1ee6987c78..fe9acb0ae480 100644
--- a/init/do_mounts_rd.c
+++ b/init/do_mounts_rd.c
@@ -64,7 +64,7 @@ identify_ramdisk_image(int fd, int start_block, decompress_fn *decompressor)
 
         buf = kmalloc(size, GFP_KERNEL);
         if (!buf)
-                return -1;
+                return -ENOMEM;
 
         minixsb = (struct minix_super_block *) buf;
         ext2sb = (struct ext2_super_block *) buf;
diff --git a/init/main.c b/init/main.c
index 33c37c379e96..3627bb37225c 100644
--- a/init/main.c
+++ b/init/main.c
@@ -129,63 +129,6 @@ static char *static_command_line;
 static char *execute_command;
 static char *ramdisk_execute_command;
 
-#ifdef CONFIG_SMP
-/* Setup configured maximum number of CPUs to activate */
-unsigned int setup_max_cpus = NR_CPUS;
-EXPORT_SYMBOL(setup_max_cpus);
-
-
-/*
- * Setup routine for controlling SMP activation
- *
- * Command-line option of "nosmp" or "maxcpus=0" will disable SMP
- * activation entirely (the MPS table probe still happens, though).
- *
- * Command-line option of "maxcpus=<NUM>", where <NUM> is an integer
- * greater than 0, limits the maximum number of CPUs activated in
- * SMP mode to <NUM>.
- */
-
-void __weak arch_disable_smp_support(void) { }
-
-static int __init nosmp(char *str)
-{
-        setup_max_cpus = 0;
-        arch_disable_smp_support();
-
-        return 0;
-}
-
-early_param("nosmp", nosmp);
-
-/* this is hard limit */
-static int __init nrcpus(char *str)
-{
-        int nr_cpus;
-
-        get_option(&str, &nr_cpus);
-        if (nr_cpus > 0 && nr_cpus < nr_cpu_ids)
-                nr_cpu_ids = nr_cpus;
-
-        return 0;
-}
-
-early_param("nr_cpus", nrcpus);
-
-static int __init maxcpus(char *str)
-{
-        get_option(&str, &setup_max_cpus);
-        if (setup_max_cpus == 0)
-                arch_disable_smp_support();
-
-        return 0;
-}
-
-early_param("maxcpus", maxcpus);
-#else
-static const unsigned int setup_max_cpus = NR_CPUS;
-#endif
-
 /*
  * If set, this is an indication to the drivers that reset the underlying
  * device before going ahead with the initialization otherwise driver might
@@ -362,7 +305,7 @@ static int __init rdinit_setup(char *str)
 __setup("rdinit=", rdinit_setup);
 
 #ifndef CONFIG_SMP
-
+static const unsigned int setup_max_cpus = NR_CPUS;
 #ifdef CONFIG_X86_LOCAL_APIC
 static void __init smp_init(void)
 {
@@ -374,37 +317,6 @@ static void __init smp_init(void)
 
 static inline void setup_nr_cpu_ids(void) { }
 static inline void smp_prepare_cpus(unsigned int maxcpus) { }
-
-#else
-
-/* Setup number of possible processor ids */
-int nr_cpu_ids __read_mostly = NR_CPUS;
-EXPORT_SYMBOL(nr_cpu_ids);
-
-/* An arch may set nr_cpu_ids earlier if needed, so this would be redundant */
-static void __init setup_nr_cpu_ids(void)
-{
-        nr_cpu_ids = find_last_bit(cpumask_bits(cpu_possible_mask),NR_CPUS) + 1;
-}
-
-/* Called by boot processor to activate the rest. */
-static void __init smp_init(void)
-{
-        unsigned int cpu;
-
-        /* FIXME: This should be done in userspace --RR */
-        for_each_present_cpu(cpu) {
-                if (num_online_cpus() >= setup_max_cpus)
-                        break;
-                if (!cpu_online(cpu))
-                        cpu_up(cpu);
-        }
-
-        /* Any cleanup work */
-        printk(KERN_INFO "Brought up %ld CPUs\n", (long)num_online_cpus());
-        smp_cpus_done(setup_max_cpus);
-}
-
 #endif
 
 /*
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 95362d15128c..e31b220a743d 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1813,10 +1813,8 @@ int cgroup_attach_task(struct cgroup *cgrp, struct task_struct *tsk)
 
         /* Update the css_set linked lists if we're using them */
         write_lock(&css_set_lock);
-        if (!list_empty(&tsk->cg_list)) {
-                list_del(&tsk->cg_list);
-                list_add(&tsk->cg_list, &newcg->tasks);
-        }
+        if (!list_empty(&tsk->cg_list))
+                list_move(&tsk->cg_list, &newcg->tasks);
         write_unlock(&css_set_lock);
 
         for_each_subsys(root, ss) {
@@ -3655,12 +3653,12 @@ again:
         spin_lock(&release_list_lock);
         set_bit(CGRP_REMOVED, &cgrp->flags);
         if (!list_empty(&cgrp->release_list))
-                list_del(&cgrp->release_list);
+                list_del_init(&cgrp->release_list);
         spin_unlock(&release_list_lock);
 
         cgroup_lock_hierarchy(cgrp->root);
         /* delete this cgroup from parent->children */
-        list_del(&cgrp->sibling);
+        list_del_init(&cgrp->sibling);
         cgroup_unlock_hierarchy(cgrp->root);
 
         d = dget(cgrp->dentry);
@@ -3879,7 +3877,7 @@ void cgroup_unload_subsys(struct cgroup_subsys *ss)
         subsys[ss->subsys_id] = NULL;
 
         /* remove subsystem from rootnode's list of subsystems */
-        list_del(&ss->sibling);
+        list_del_init(&ss->sibling);
 
         /*
          * disentangle the css from all css_sets attached to the dummytop. as
@@ -4241,7 +4239,7 @@ void cgroup_exit(struct task_struct *tsk, int run_callbacks)
         if (!list_empty(&tsk->cg_list)) {
                 write_lock(&css_set_lock);
                 if (!list_empty(&tsk->cg_list))
-                        list_del(&tsk->cg_list);
+                        list_del_init(&tsk->cg_list);
                 write_unlock(&css_set_lock);
         }
 
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 156cc5556140..c95fc4df0faa 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -160,7 +160,6 @@ static void cpu_notify_nofail(unsigned long val, void *v)
 {
         BUG_ON(cpu_notify(val, v));
 }
-
 EXPORT_SYMBOL(register_cpu_notifier);
 
 void __ref unregister_cpu_notifier(struct notifier_block *nb)
@@ -205,7 +204,6 @@ static int __ref take_cpu_down(void *_param)
                 return err;
 
         cpu_notify(CPU_DYING | param->mod, param->hcpu);
-
         return 0;
 }
 
@@ -227,6 +225,7 @@ static int __ref _cpu_down(unsigned int cpu, int tasks_frozen)
                 return -EINVAL;
 
         cpu_hotplug_begin();
+
         err = __cpu_notify(CPU_DOWN_PREPARE | mod, hcpu, -1, &nr_calls);
         if (err) {
                 nr_calls--;
@@ -304,7 +303,7 @@ static int __cpuinit _cpu_up(unsigned int cpu, int tasks_frozen)
         ret = __cpu_notify(CPU_UP_PREPARE | mod, hcpu, -1, &nr_calls);
         if (ret) {
                 nr_calls--;
-                printk("%s: attempt to bring up CPU %u failed\n",
+                printk(KERN_WARNING "%s: attempt to bring up CPU %u failed\n",
                                 __func__, cpu);
                 goto out_notify;
         }
@@ -450,14 +449,14 @@ void __ref enable_nonboot_cpus(void)
         if (cpumask_empty(frozen_cpus))
                 goto out;
 
-        printk("Enabling non-boot CPUs ...\n");
+        printk(KERN_INFO "Enabling non-boot CPUs ...\n");
 
         arch_enable_nonboot_cpus_begin();
 
         for_each_cpu(cpu, frozen_cpus) {
                 error = _cpu_up(cpu, 1);
                 if (!error) {
-                        printk("CPU%d is up\n", cpu);
+                        printk(KERN_INFO "CPU%d is up\n", cpu);
                         continue;
                 }
                 printk(KERN_WARNING "Error taking CPU%d up: %d\n", cpu, error);
@@ -509,7 +508,7 @@ void __cpuinit notify_cpu_starting(unsigned int cpu)
  */
 
 /* cpu_bit_bitmap[0] is empty - so we can back into it */
-#define MASK_DECLARE_1(x)       [x+1][0] = 1UL << (x)
+#define MASK_DECLARE_1(x)       [x+1][0] = (1UL << (x))
 #define MASK_DECLARE_2(x)       MASK_DECLARE_1(x), MASK_DECLARE_1(x+1)
 #define MASK_DECLARE_4(x)       MASK_DECLARE_2(x), MASK_DECLARE_2(x+2)
 #define MASK_DECLARE_8(x)       MASK_DECLARE_4(x), MASK_DECLARE_4(x+4)
diff --git a/kernel/fork.c b/kernel/fork.c
index 05b92c457010..f2b494d7c557 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -40,6 +40,7 @@
 #include <linux/tracehook.h>
 #include <linux/futex.h>
 #include <linux/compat.h>
+#include <linux/kthread.h>
 #include <linux/task_io_accounting_ops.h>
 #include <linux/rcupdate.h>
 #include <linux/ptrace.h>
@@ -109,20 +110,25 @@ int nr_processes(void)
 }
 
 #ifndef __HAVE_ARCH_TASK_STRUCT_ALLOCATOR
-# define alloc_task_struct()    kmem_cache_alloc(task_struct_cachep, GFP_KERNEL)
-# define free_task_struct(tsk)  kmem_cache_free(task_struct_cachep, (tsk))
+# define alloc_task_struct_node(node)           \
+                kmem_cache_alloc_node(task_struct_cachep, GFP_KERNEL, node)
+# define free_task_struct(tsk)                  \
+                kmem_cache_free(task_struct_cachep, (tsk))
 static struct kmem_cache *task_struct_cachep;
 #endif
 
 #ifndef __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-static inline struct thread_info *alloc_thread_info(struct task_struct *tsk)
+static struct thread_info *alloc_thread_info_node(struct task_struct *tsk,
+                                                  int node)
 {
 #ifdef CONFIG_DEBUG_STACK_USAGE
         gfp_t mask = GFP_KERNEL | __GFP_ZERO;
 #else
         gfp_t mask = GFP_KERNEL;
 #endif
-        return (struct thread_info *)__get_free_pages(mask, THREAD_SIZE_ORDER);
+        struct page *page = alloc_pages_node(node, mask, THREAD_SIZE_ORDER);
+
+        return page ? page_address(page) : NULL;
 }
 
 static inline void free_thread_info(struct thread_info *ti)
@@ -249,16 +255,16 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
         struct task_struct *tsk;
         struct thread_info *ti;
         unsigned long *stackend;
-
+        int node = tsk_fork_get_node(orig);
         int err;
 
         prepare_to_copy(orig);
 
-        tsk = alloc_task_struct();
+        tsk = alloc_task_struct_node(node);
         if (!tsk)
                 return NULL;
 
-        ti = alloc_thread_info(tsk);
+        ti = alloc_thread_info_node(tsk, node);
         if (!ti) {
                 free_task_struct(tsk);
                 return NULL;
@@ -1513,38 +1519,24 @@ void __init proc_caches_init(void)
 }
 
 /*
- * Check constraints on flags passed to the unshare system call and
- * force unsharing of additional process context as appropriate.
+ * Check constraints on flags passed to the unshare system call.
  */
-static void check_unshare_flags(unsigned long *flags_ptr)
+static int check_unshare_flags(unsigned long unshare_flags)
 {
+        if (unshare_flags & ~(CLONE_THREAD|CLONE_FS|CLONE_NEWNS|CLONE_SIGHAND|
+                                CLONE_VM|CLONE_FILES|CLONE_SYSVSEM|
+                                CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWNET))
+                return -EINVAL;
         /*
-         * If unsharing a thread from a thread group, must also
-         * unshare vm.
-         */
-        if (*flags_ptr & CLONE_THREAD)
-                *flags_ptr |= CLONE_VM;
-
-        /*
-         * If unsharing vm, must also unshare signal handlers.
-         */
-        if (*flags_ptr & CLONE_VM)
-                *flags_ptr |= CLONE_SIGHAND;
-
-        /*
-         * If unsharing namespace, must also unshare filesystem information.
+         * Not implemented, but pretend it works if there is nothing to
+         * unshare. Note that unsharing CLONE_THREAD or CLONE_SIGHAND
+         * needs to unshare vm.
          */
-        if (*flags_ptr & CLONE_NEWNS)
-                *flags_ptr |= CLONE_FS;
-}
-
-/*
- * Unsharing of tasks created with CLONE_THREAD is not supported yet
- */
-static int unshare_thread(unsigned long unshare_flags)
-{
-        if (unshare_flags & CLONE_THREAD)
-                return -EINVAL;
+        if (unshare_flags & (CLONE_THREAD | CLONE_SIGHAND | CLONE_VM)) {
+                /* FIXME: get_task_mm() increments ->mm_users */
+                if (atomic_read(&current->mm->mm_users) > 1)
+                        return -EINVAL;
+        }
 
         return 0;
 }
@@ -1571,34 +1563,6 @@ static int unshare_fs(unsigned long unshare_flags, struct fs_struct **new_fsp)
 }
 
 /*
- * Unsharing of sighand is not supported yet
- */
-static int unshare_sighand(unsigned long unshare_flags, struct sighand_struct **new_sighp)
-{
-        struct sighand_struct *sigh = current->sighand;
-
-        if ((unshare_flags & CLONE_SIGHAND) && atomic_read(&sigh->count) > 1)
-                return -EINVAL;
-        else
-                return 0;
-}
-
-/*
- * Unshare vm if it is being shared
- */
-static int unshare_vm(unsigned long unshare_flags, struct mm_struct **new_mmp)
-{
-        struct mm_struct *mm = current->mm;
-
-        if ((unshare_flags & CLONE_VM) &&
-            (mm && atomic_read(&mm->mm_users) > 1)) {
-                return -EINVAL;
-        }
-
-        return 0;
-}
-
-/*
  * Unshare file descriptor table if it is being shared
  */
 static int unshare_fd(unsigned long unshare_flags, struct files_struct **new_fdp)
@@ -1626,45 +1590,37 @@ static int unshare_fd(unsigned long unshare_flags, struct files_struct **new_fdp
  */
 SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
 {
-        int err = 0;
         struct fs_struct *fs, *new_fs = NULL;
-        struct sighand_struct *new_sigh = NULL;
-        struct mm_struct *mm, *new_mm = NULL, *active_mm = NULL;
         struct files_struct *fd, *new_fd = NULL;
         struct nsproxy *new_nsproxy = NULL;
         int do_sysvsem = 0;
+        int err;
 
-        check_unshare_flags(&unshare_flags);
-
-        /* Return -EINVAL for all unsupported flags */
-        err = -EINVAL;
-        if (unshare_flags & ~(CLONE_THREAD|CLONE_FS|CLONE_NEWNS|CLONE_SIGHAND|
-                                CLONE_VM|CLONE_FILES|CLONE_SYSVSEM|
-                                CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWNET))
+        err = check_unshare_flags(unshare_flags);
+        if (err)
                 goto bad_unshare_out;
 
         /*
+         * If unsharing namespace, must also unshare filesystem information.
+         */
+        if (unshare_flags & CLONE_NEWNS)
+                unshare_flags |= CLONE_FS;
+        /*
          * CLONE_NEWIPC must also detach from the undolist: after switching
          * to a new ipc namespace, the semaphore arrays from the old
          * namespace are unreachable.
          */
         if (unshare_flags & (CLONE_NEWIPC|CLONE_SYSVSEM))
                 do_sysvsem = 1;
-        if ((err = unshare_thread(unshare_flags)))
-                goto bad_unshare_out;
         if ((err = unshare_fs(unshare_flags, &new_fs)))
-                goto bad_unshare_cleanup_thread;
-        if ((err = unshare_sighand(unshare_flags, &new_sigh)))
-                goto bad_unshare_cleanup_fs;
-        if ((err = unshare_vm(unshare_flags, &new_mm)))
-                goto bad_unshare_cleanup_sigh;
+                goto bad_unshare_out;
         if ((err = unshare_fd(unshare_flags, &new_fd)))
-                goto bad_unshare_cleanup_vm;
+                goto bad_unshare_cleanup_fs;
         if ((err = unshare_nsproxy_namespaces(unshare_flags, &new_nsproxy,
                         new_fs)))
                 goto bad_unshare_cleanup_fd;
 
-        if (new_fs ||  new_mm || new_fd || do_sysvsem || new_nsproxy) {
+        if (new_fs || new_fd || do_sysvsem || new_nsproxy) {
                 if (do_sysvsem) {
                         /*
                          * CLONE_SYSVSEM is equivalent to sys_exit().
@@ -1690,19 +1646,6 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
                         spin_unlock(&fs->lock);
                 }
 
-                if (new_mm) {
-                        mm = current->mm;
-                        active_mm = current->active_mm;
-                        current->mm = new_mm;
-                        current->active_mm = new_mm;
-                        if (current->signal->oom_score_adj == OOM_SCORE_ADJ_MIN) {
-                                atomic_dec(&mm->oom_disable_count);
-                                atomic_inc(&new_mm->oom_disable_count);
-                        }
-                        activate_mm(active_mm, new_mm);
-                        new_mm = mm;
-                }
-
                 if (new_fd) {
                         fd = current->files;
                         current->files = new_fd;
@@ -1719,20 +1662,10 @@ bad_unshare_cleanup_fd:
         if (new_fd)
                 put_files_struct(new_fd);
 
-bad_unshare_cleanup_vm:
-        if (new_mm)
-                mmput(new_mm);
-
-bad_unshare_cleanup_sigh:
-        if (new_sigh)
-                if (atomic_dec_and_test(&new_sigh->count))
-                        kmem_cache_free(sighand_cachep, new_sigh);
-
 bad_unshare_cleanup_fs:
         if (new_fs)
                 free_fs_struct(new_fs);
 
-bad_unshare_cleanup_thread:
 bad_unshare_out:
         return err;
 }
diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index 6f6d091b5757..75dcca37d61a 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -477,13 +477,11 @@ static int s_show(struct seq_file *m, void *p)
                  */
                 type = iter->exported ? toupper(iter->type) :
                                         tolower(iter->type);
-                seq_printf(m, "%0*lx %c %s\t[%s]\n",
-                           (int)(2 * sizeof(void *)),
-                           iter->value, type, iter->name, iter->module_name);
+                seq_printf(m, "%pK %c %s\t[%s]\n", (void *)iter->value,
+                           type, iter->name, iter->module_name);
         } else
-                seq_printf(m, "%0*lx %c %s\n",
-                           (int)(2 * sizeof(void *)),
-                           iter->value, iter->type, iter->name);
+                seq_printf(m, "%pK %c %s\n", (void *)iter->value,
+                           iter->type, iter->name);
         return 0;
 }
 
diff --git a/kernel/kthread.c b/kernel/kthread.c
index c55afba990a3..684ab3f7dd72 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -27,6 +27,7 @@ struct kthread_create_info
         /* Information passed to kthread() from kthreadd. */
         int (*threadfn)(void *data);
         void *data;
+        int node;
 
         /* Result passed back to kthread_create() from kthreadd. */
         struct task_struct *result;
@@ -98,10 +99,23 @@ static int kthread(void *_create)
         do_exit(ret);
 }
 
+/* called from do_fork() to get node information for about to be created task */
+int tsk_fork_get_node(struct task_struct *tsk)
+{
+#ifdef CONFIG_NUMA
+        if (tsk == kthreadd_task)
+                return tsk->pref_node_fork;
+#endif
+        return numa_node_id();
+}
+
 static void create_kthread(struct kthread_create_info *create)
 {
         int pid;
 
+#ifdef CONFIG_NUMA
+        current->pref_node_fork = create->node;
+#endif
         /* We want our own signal handler (we take no signals by default). */
         pid = kernel_thread(kthread, create, CLONE_FS | CLONE_FILES | SIGCHLD);
         if (pid < 0) {
@@ -111,15 +125,18 @@ static void create_kthread(struct kthread_create_info *create)
 }
 
 /**
- * kthread_create - create a kthread.
+ * kthread_create_on_node - create a kthread.
  * @threadfn: the function to run until signal_pending(current).
  * @data: data ptr for @threadfn.
+ * @node: memory node number.
  * @namefmt: printf-style name for the thread.
  *
  * Description: This helper function creates and names a kernel
  * thread.  The thread will be stopped: use wake_up_process() to start
  * it.  See also kthread_run().
  *
+ * If thread is going to be bound on a particular cpu, give its node
+ * in @node, to get NUMA affinity for kthread stack, or else give -1.
  * When woken, the thread will run @threadfn() with @data as its
  * argument. @threadfn() can either call do_exit() directly if it is a
  * standalone thread for which noone will call kthread_stop(), or
@@ -129,15 +146,17 @@ static void create_kthread(struct kthread_create_info *create)
  *
  * Returns a task_struct or ERR_PTR(-ENOMEM).
  */
-struct task_struct *kthread_create(int (*threadfn)(void *data),
-                                   void *data,
-                                   const char namefmt[],
-                                   ...)
+struct task_struct *kthread_create_on_node(int (*threadfn)(void *data),
+                                           void *data,
+                                           int node,
+                                           const char namefmt[],
+                                           ...)
 {
         struct kthread_create_info create;
 
         create.threadfn = threadfn;
         create.data = data;
+        create.node = node;
         init_completion(&create.done);
 
         spin_lock(&kthread_create_lock);
@@ -164,7 +183,7 @@ struct task_struct *kthread_create(int (*threadfn)(void *data),
         }
         return create.result;
 }
-EXPORT_SYMBOL(kthread_create);
+EXPORT_SYMBOL(kthread_create_on_node);
 
 /**
  * kthread_bind - bind a just-created kthread to a cpu.
diff --git a/kernel/module.c b/kernel/module.c
index efa290ea94bf..1f9f7bc56ca1 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1168,7 +1168,7 @@ static ssize_t module_sect_show(struct module_attribute *mattr,
 {
         struct module_sect_attr *sattr =
                 container_of(mattr, struct module_sect_attr, mattr);
-        return sprintf(buf, "0x%lx\n", sattr->address);
+        return sprintf(buf, "0x%pK\n", (void *)sattr->address);
 }
 
 static void free_sect_attrs(struct module_sect_attrs *sect_attrs)
@@ -3224,7 +3224,7 @@ static int m_show(struct seq_file *m, void *p)
                    mod->state == MODULE_STATE_COMING ? "Loading":
                    "Live");
         /* Used by oprofile and other similar tools. */
-        seq_printf(m, " 0x%p", mod->module_core);
+        seq_printf(m, " 0x%pK", mod->module_core);
 
         /* Taints info */
         if (mod->taints)
diff --git a/kernel/panic.c b/kernel/panic.c
index 991bb87a1704..69231670eb95 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -433,3 +433,13 @@ EXPORT_SYMBOL(__stack_chk_fail);
 
 core_param(panic, panic_timeout, int, 0644);
 core_param(pause_on_oops, pause_on_oops, int, 0644);
+
+static int __init oops_setup(char *s)
+{
+        if (!s)
+                return -EINVAL;
+        if (!strcmp(s, "panic"))
+                panic_on_oops = 1;
+        return 0;
+}
+early_param("oops", oops_setup);
diff --git a/kernel/printk.c b/kernel/printk.c
index 33284adb2189..da8ca817eae3 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -53,7 +53,7 @@ void asmlinkage __attribute__((weak)) early_printk(const char *fmt, ...)
 #define __LOG_BUF_LEN   (1 << CONFIG_LOG_BUF_SHIFT)
 
 /* printk's without a loglevel use this.. */
-#define DEFAULT_MESSAGE_LOGLEVEL 4 /* KERN_WARNING */
+#define DEFAULT_MESSAGE_LOGLEVEL CONFIG_DEFAULT_MESSAGE_LOGLEVEL
 
 /* We show everything that is MORE important than this.. */
 #define MINIMUM_CONSOLE_LOGLEVEL 1 /* Minimum loglevel we let people use */
@@ -113,6 +113,11 @@ static unsigned con_start;	/* Index into log_buf: next char to be sent to consol
 static unsigned log_end;        /* Index into log_buf: most-recently-written-char + 1 */
 
 /*
+ * If exclusive_console is non-NULL then only this console is to be printed to.
+ */
+static struct console *exclusive_console;
+
+/*
  *      Array of consoles built from command line options (console=)
  */
 struct console_cmdline
@@ -476,6 +481,8 @@ static void __call_console_drivers(unsigned start, unsigned end)
         struct console *con;
 
         for_each_console(con) {
+                if (exclusive_console && con != exclusive_console)
+                        continue;
                 if ((con->flags & CON_ENABLED) && con->write &&
                                 (cpu_online(smp_processor_id()) ||
                                 (con->flags & CON_ANYTIME)))
@@ -1230,6 +1237,11 @@ void console_unlock(void)
                 local_irq_restore(flags);
         }
         console_locked = 0;
+
+        /* Release the exclusive_console once it is used */
+        if (unlikely(exclusive_console))
+                exclusive_console = NULL;
+
         up(&console_sem);
         spin_unlock_irqrestore(&logbuf_lock, flags);
         if (wake_klogd)
@@ -1316,6 +1328,18 @@ void console_start(struct console *console)
 }
 EXPORT_SYMBOL(console_start);
 
+static int __read_mostly keep_bootcon;
+
+static int __init keep_bootcon_setup(char *str)
+{
+        keep_bootcon = 1;
+        printk(KERN_INFO "debug: skip boot console de-registration.\n");
+
+        return 0;
+}
+
+early_param("keep_bootcon", keep_bootcon_setup);
+
 /*
  * The console driver calls this routine during kernel initialization
  * to register the console printing procedure with printk() and to
@@ -1452,6 +1476,12 @@ void register_console(struct console *newcon)
                 spin_lock_irqsave(&logbuf_lock, flags);
                 con_start = log_start;
                 spin_unlock_irqrestore(&logbuf_lock, flags);
+                /*
+                 * We're about to replay the log buffer.  Only do this to the
+                 * just-registered console to avoid excessive message spam to
+                 * the already-registered consoles.
+                 */
+                exclusive_console = newcon;
         }
         console_unlock();
         console_sysfs_notify();
@@ -1463,7 +1493,9 @@ void register_console(struct console *newcon)
          * users know there might be something in the kernel's log buffer that
          * went to the bootconsole (that they do not see on the real console)
          */
-        if (bcon && ((newcon->flags & (CON_CONSDEV | CON_BOOT)) == CON_CONSDEV)) {
+        if (bcon &&
+            ((newcon->flags & (CON_CONSDEV | CON_BOOT)) == CON_CONSDEV) &&
+            !keep_bootcon) {
                 /* we need to iterate through twice, to make sure we print
                  * everything out, before we unregister the console(s)
                  */
diff --git a/kernel/smp.c b/kernel/smp.c
index 7cbd0f293df4..73a195193558 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -604,6 +604,87 @@ void ipi_call_unlock_irq(void)
 }
 #endif /* USE_GENERIC_SMP_HELPERS */
 
+/* Setup configured maximum number of CPUs to activate */
+unsigned int setup_max_cpus = NR_CPUS;
+EXPORT_SYMBOL(setup_max_cpus);
+
+
+/*
+ * Setup routine for controlling SMP activation
+ *
+ * Command-line option of "nosmp" or "maxcpus=0" will disable SMP
+ * activation entirely (the MPS table probe still happens, though).
+ *
+ * Command-line option of "maxcpus=<NUM>", where <NUM> is an integer
+ * greater than 0, limits the maximum number of CPUs activated in
+ * SMP mode to <NUM>.
+ */
+
+void __weak arch_disable_smp_support(void) { }
+
+static int __init nosmp(char *str)
+{
+        setup_max_cpus = 0;
+        arch_disable_smp_support();
+
+        return 0;
+}
+
+early_param("nosmp", nosmp);
+
+/* this is hard limit */
+static int __init nrcpus(char *str)
+{
+        int nr_cpus;
+
+        get_option(&str, &nr_cpus);
+        if (nr_cpus > 0 && nr_cpus < nr_cpu_ids)
+                nr_cpu_ids = nr_cpus;
+
+        return 0;
+}
+
+early_param("nr_cpus", nrcpus);
+
+static int __init maxcpus(char *str)
+{
+        get_option(&str, &setup_max_cpus);
+        if (setup_max_cpus == 0)
+                arch_disable_smp_support();
+
+        return 0;
+}
+
+early_param("maxcpus", maxcpus);
+
+/* Setup number of possible processor ids */
+int nr_cpu_ids __read_mostly = NR_CPUS;
+EXPORT_SYMBOL(nr_cpu_ids);
+
+/* An arch may set nr_cpu_ids earlier if needed, so this would be redundant */
+void __init setup_nr_cpu_ids(void)
+{
+        nr_cpu_ids = find_last_bit(cpumask_bits(cpu_possible_mask),NR_CPUS) + 1;
+}
+
+/* Called by boot processor to activate the rest. */
+void __init smp_init(void)
+{
+        unsigned int cpu;
+
+        /* FIXME: This should be done in userspace --RR */
+        for_each_present_cpu(cpu) {
+                if (num_online_cpus() >= setup_max_cpus)
+                        break;
+                if (!cpu_online(cpu))
+                        cpu_up(cpu);
+        }
+
+        /* Any cleanup work */
+        printk(KERN_INFO "Brought up %ld CPUs\n", (long)num_online_cpus());
+        smp_cpus_done(setup_max_cpus);
+}
+
 /*
  * Call a function on all processors.  May be used during early boot while
  * early_boot_irqs_disabled is set.  Use local_irq_save/restore() instead
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 56e5dec837f0..735d87095172 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -845,7 +845,10 @@ static int __cpuinit cpu_callback(struct notifier_block *nfb,
         switch (action) {
         case CPU_UP_PREPARE:
         case CPU_UP_PREPARE_FROZEN:
-                p = kthread_create(run_ksoftirqd, hcpu, "ksoftirqd/%d", hotcpu);
+                p = kthread_create_on_node(run_ksoftirqd,
+                                           hcpu,
+                                           cpu_to_node(hotcpu),
+                                           "ksoftirqd/%d", hotcpu);
                 if (IS_ERR(p)) {
                         printk("ksoftirqd for %i failed\n", hotcpu);
                         return notifier_from_errno(PTR_ERR(p));
diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c
index 2df820b03beb..e3516b29076c 100644
--- a/kernel/stop_machine.c
+++ b/kernel/stop_machine.c
@@ -301,8 +301,10 @@ static int __cpuinit cpu_stop_cpu_callback(struct notifier_block *nfb,
         case CPU_UP_PREPARE:
                 BUG_ON(stopper->thread || stopper->enabled ||
                        !list_empty(&stopper->works));
-                p = kthread_create(cpu_stopper_thread, stopper, "migration/%d",
-                                   cpu);
+                p = kthread_create_on_node(cpu_stopper_thread,
+                                           stopper,
+                                           cpu_to_node(cpu),
+                                           "migration/%d", cpu);
                 if (IS_ERR(p))
                         return notifier_from_errno(PTR_ERR(p));
                 get_task_struct(p);
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 18bb15776c57..140dce750450 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -48,12 +48,15 @@ static DEFINE_PER_CPU(struct perf_event *, watchdog_ev);
  * Should we panic when a soft-lockup or hard-lockup occurs:
  */
 #ifdef CONFIG_HARDLOCKUP_DETECTOR
-static int hardlockup_panic;
+static int hardlockup_panic =
+                        CONFIG_BOOTPARAM_HARDLOCKUP_PANIC_VALUE;
 
 static int __init hardlockup_panic_setup(char *str)
 {
         if (!strncmp(str, "panic", 5))
                 hardlockup_panic = 1;
+        else if (!strncmp(str, "nopanic", 7))
+                hardlockup_panic = 0;
         else if (!strncmp(str, "0", 1))
                 watchdog_enabled = 0;
         return 1;
@@ -415,19 +418,22 @@ static int watchdog_prepare_cpu(int cpu)
 static int watchdog_enable(int cpu)
 {
         struct task_struct *p = per_cpu(softlockup_watchdog, cpu);
-        int err;
+        int err = 0;
 
         /* enable the perf event */
         err = watchdog_nmi_enable(cpu);
-        if (err)
-                return err;
+
+        /* Regardless of err above, fall through and start softlockup */
 
         /* create the watchdog thread */
         if (!p) {
                 p = kthread_create(watchdog, (void *)(unsigned long)cpu, "watchdog/%d", cpu);
                 if (IS_ERR(p)) {
                         printk(KERN_ERR "softlockup watchdog for %i failed\n", cpu);
-                        return PTR_ERR(p);
+                        if (!err)
+                                /* if hardlockup hasn't already set this */
+                                err = PTR_ERR(p);
+                        goto out;
                 }
                 kthread_bind(p, cpu);
                 per_cpu(watchdog_touch_ts, cpu) = 0;
@@ -435,7 +441,8 @@ static int watchdog_enable(int cpu)
                 wake_up_process(p);
         }
 
-        return 0;
+out:
+        return err;
 }
 
 static void watchdog_disable(int cpu)
@@ -547,7 +554,13 @@ cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
                 break;
 #endif /* CONFIG_HOTPLUG_CPU */
         }
-        return notifier_from_errno(err);
+
+        /*
+         * hardlockup and softlockup are not important enough
+         * to block cpu bring up.  Just always succeed and
+         * rely on printk output to flag problems.
+         */
+        return NOTIFY_OK;
 }
 
 static struct notifier_block __cpuinitdata cpu_nfb = {
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 5ca7ce9ce754..04ef830690ec 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1366,8 +1366,10 @@ static struct worker *create_worker(struct global_cwq *gcwq, bool bind)
         worker->id = id;
 
         if (!on_unbound_cpu)
-                worker->task = kthread_create(worker_thread, worker,
-                                              "kworker/%u:%d", gcwq->cpu, id);
+                worker->task = kthread_create_on_node(worker_thread,
+                                                      worker,
+                                                      cpu_to_node(gcwq->cpu),
+                                                      "kworker/%u:%d", gcwq->cpu, id);
         else
                 worker->task = kthread_create(worker_thread, worker,
                                               "kworker/u:%d", id);
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 191c5c4c89fc..df9234c5f9d1 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -9,6 +9,17 @@ config PRINTK_TIME
           operations.  This is useful for identifying long delays
           in kernel startup.
 
+config DEFAULT_MESSAGE_LOGLEVEL
+        int "Default message log level (1-7)"
+        range 1 7
+        default "4"
+        help
+          Default log level for printk statements with no specified priority.
+
+          This was hard-coded to KERN_WARNING since at least 2.6.10 but folks
+          that are auditing their logs closely may want to set it to a lower
+          priority.
+
 config ENABLE_WARN_DEPRECATED
         bool "Enable __deprecated logic"
         default y
@@ -171,6 +182,23 @@ config HARDLOCKUP_DETECTOR
         def_bool LOCKUP_DETECTOR && PERF_EVENTS && HAVE_PERF_EVENTS_NMI && \
                  !ARCH_HAS_NMI_WATCHDOG
 
+config BOOTPARAM_HARDLOCKUP_PANIC
+        bool "Panic (Reboot) On Hard Lockups"
+        depends on LOCKUP_DETECTOR
+        help
+          Say Y here to enable the kernel to panic on "hard lockups",
+          which are bugs that cause the kernel to loop in kernel
+          mode with interrupts disabled for more than 60 seconds.
+
+          Say N if unsure.
+
+config BOOTPARAM_HARDLOCKUP_PANIC_VALUE
+        int
+        depends on LOCKUP_DETECTOR
+        range 0 1
+        default 0 if !BOOTPARAM_HARDLOCKUP_PANIC
+        default 1 if BOOTPARAM_HARDLOCKUP_PANIC
+
 config BOOTPARAM_SOFTLOCKUP_PANIC
         bool "Panic (Reboot) On Soft Lockups"
         depends on LOCKUP_DETECTOR
@@ -1222,3 +1250,6 @@ source "samples/Kconfig"
 source "lib/Kconfig.kgdb"
 
 source "lib/Kconfig.kmemcheck"
+
+config TEST_KSTRTOX
+        tristate "Test kstrto*() family of functions at runtime"
diff --git a/lib/Makefile b/lib/Makefile
index ef7ed71a6ffd..8c9de027ebb1 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -22,6 +22,8 @@ lib-y	+= kobject.o kref.o klist.o
 obj-y += bcd.o div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \
          bust_spinlocks.o hexdump.o kasprintf.o bitmap.o scatterlist.o \
          string_helpers.o gcd.o lcm.o list_sort.o uuid.o flex_array.o
+obj-y += kstrtox.o
+obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o
 
 ifeq ($(CONFIG_DEBUG_KOBJECT),y)
 CFLAGS_kobject.o += -DDEBUG
diff --git a/lib/kstrtox.c b/lib/kstrtox.c
new file mode 100644
index 000000000000..05672e819f8c
--- /dev/null
+++ b/lib/kstrtox.c
@@ -0,0 +1,227 @@
+/*
+ * Convert integer string representation to an integer.
+ * If an integer doesn't fit into specified type, -E is returned.
+ *
+ * Integer starts with optional sign.
+ * kstrtou*() functions do not accept sign "-".
+ *
+ * Radix 0 means autodetection: leading "0x" implies radix 16,
+ * leading "0" implies radix 8, otherwise radix is 10.
+ * Autodetection hints work after optional sign, but not before.
+ *
+ * If -E is returned, result is not touched.
+ */
+#include <linux/ctype.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/math64.h>
+#include <linux/module.h>
+#include <linux/types.h>
+
+static inline char _tolower(const char c)
+{
+        return c | 0x20;
+}
+
+static int _kstrtoull(const char *s, unsigned int base, unsigned long long *res)
+{
+        unsigned long long acc;
+        int ok;
+
+        if (base == 0) {
+                if (s[0] == '0') {
+                        if (_tolower(s[1]) == 'x' && isxdigit(s[2]))
+                                base = 16;
+                        else
+                                base = 8;
+                } else
+                        base = 10;
+        }
+        if (base == 16 && s[0] == '0' && _tolower(s[1]) == 'x')
+                s += 2;
+
+        acc = 0;
+        ok = 0;
+        while (*s) {
+                unsigned int val;
+
+                if ('0' <= *s && *s <= '9')
+                        val = *s - '0';
+                else if ('a' <= _tolower(*s) && _tolower(*s) <= 'f')
+                        val = _tolower(*s) - 'a' + 10;
+                else if (*s == '\n') {
+                        if (*(s + 1) == '\0')
+                                break;
+                        else
+                                return -EINVAL;
+                } else
+                        return -EINVAL;
+
+                if (val >= base)
+                        return -EINVAL;
+                if (acc > div_u64(ULLONG_MAX - val, base))
+                        return -ERANGE;
+                acc = acc * base + val;
+                ok = 1;
+
+                s++;
+        }
+        if (!ok)
+                return -EINVAL;
+        *res = acc;
+        return 0;
+}
+
+int kstrtoull(const char *s, unsigned int base, unsigned long long *res)
+{
+        if (s[0] == '+')
+                s++;
+        return _kstrtoull(s, base, res);
+}
+EXPORT_SYMBOL(kstrtoull);
+
+int kstrtoll(const char *s, unsigned int base, long long *res)
+{
+        unsigned long long tmp;
+        int rv;
+
+        if (s[0] == '-') {
+                rv = _kstrtoull(s + 1, base, &tmp);
+                if (rv < 0)
+                        return rv;
+                if ((long long)(-tmp) >= 0)
+                        return -ERANGE;
+                *res = -tmp;
+        } else {
+                rv = kstrtoull(s, base, &tmp);
+                if (rv < 0)
+                        return rv;
+                if ((long long)tmp < 0)
+                        return -ERANGE;
+                *res = tmp;
+        }
+        return 0;
+}
+EXPORT_SYMBOL(kstrtoll);
+
+/* Internal, do not use. */
+int _kstrtoul(const char *s, unsigned int base, unsigned long *res)
+{
+        unsigned long long tmp;
+        int rv;
+
+        rv = kstrtoull(s, base, &tmp);
+        if (rv < 0)
+                return rv;
+        if (tmp != (unsigned long long)(unsigned long)tmp)
+                return -ERANGE;
+        *res = tmp;
+        return 0;
+}
+EXPORT_SYMBOL(_kstrtoul);
+
+/* Internal, do not use. */
+int _kstrtol(const char *s, unsigned int base, long *res)
+{
+        long long tmp;
+        int rv;
+
+        rv = kstrtoll(s, base, &tmp);
+        if (rv < 0)
+                return rv;
+        if (tmp != (long long)(long)tmp)
+                return -ERANGE;
+        *res = tmp;
+        return 0;
+}
+EXPORT_SYMBOL(_kstrtol);
+
+int kstrtouint(const char *s, unsigned int base, unsigned int *res)
+{
+        unsigned long long tmp;
+        int rv;
+
+        rv = kstrtoull(s, base, &tmp);
+        if (rv < 0)
+                return rv;
+        if (tmp != (unsigned long long)(unsigned int)tmp)
+                return -ERANGE;
+        *res = tmp;
+        return 0;
+}
+EXPORT_SYMBOL(kstrtouint);
+
+int kstrtoint(const char *s, unsigned int base, int *res)
+{
+        long long tmp;
+        int rv;
+
+        rv = kstrtoll(s, base, &tmp);
+        if (rv < 0)
+                return rv;
+        if (tmp != (long long)(int)tmp)
+                return -ERANGE;
+        *res = tmp;
+        return 0;
+}
+EXPORT_SYMBOL(kstrtoint);
+
+int kstrtou16(const char *s, unsigned int base, u16 *res)
+{
+        unsigned long long tmp;
+        int rv;
+
+        rv = kstrtoull(s, base, &tmp);
+        if (rv < 0)
+                return rv;
+        if (tmp != (unsigned long long)(u16)tmp)
+                return -ERANGE;
+        *res = tmp;
+        return 0;
+}
+EXPORT_SYMBOL(kstrtou16);
+
+int kstrtos16(const char *s, unsigned int base, s16 *res)
+{
+        long long tmp;
+        int rv;
+
+        rv = kstrtoll(s, base, &tmp);
+        if (rv < 0)
+                return rv;
+        if (tmp != (long long)(s16)tmp)
+                return -ERANGE;
+        *res = tmp;
+        return 0;
+}
+EXPORT_SYMBOL(kstrtos16);
+
+int kstrtou8(const char *s, unsigned int base, u8 *res)
+{
+        unsigned long long tmp;
+        int rv;
+
+        rv = kstrtoull(s, base, &tmp);
+        if (rv < 0)
+                return rv;
+        if (tmp != (unsigned long long)(u8)tmp)
+                return -ERANGE;
+        *res = tmp;
+        return 0;
+}
+EXPORT_SYMBOL(kstrtou8);
+
+int kstrtos8(const char *s, unsigned int base, s8 *res)
+{
+        long long tmp;
+        int rv;
+
+        rv = kstrtoll(s, base, &tmp);
+        if (rv < 0)
+                return rv;
+        if (tmp != (long long)(s8)tmp)
+                return -ERANGE;
+        *res = tmp;
+        return 0;
+}
+EXPORT_SYMBOL(kstrtos8);
diff --git a/lib/show_mem.c b/lib/show_mem.c
index fdc77c82f922..d8d602b58c31 100644
--- a/lib/show_mem.c
+++ b/lib/show_mem.c
@@ -9,14 +9,14 @@
 #include <linux/nmi.h>
 #include <linux/quicklist.h>
 
-void show_mem(void)
+void __show_mem(unsigned int filter)
 {
         pg_data_t *pgdat;
         unsigned long total = 0, reserved = 0, shared = 0,
                 nonshared = 0, highmem = 0;
 
         printk("Mem-Info:\n");
-        show_free_areas();
+        __show_free_areas(filter);
 
         for_each_online_pgdat(pgdat) {
                 unsigned long i, flags;
@@ -61,3 +61,8 @@ void show_mem(void)
                 quicklist_total_size());
 #endif
 }
+
+void show_mem(void)
+{
+        __show_mem(0);
+}
diff --git a/lib/test-kstrtox.c b/lib/test-kstrtox.c
new file mode 100644
index 000000000000..325c2f9ecebd
--- /dev/null
+++ b/lib/test-kstrtox.c
@@ -0,0 +1,739 @@
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#define for_each_test(i, test)  \
+        for (i = 0; i < sizeof(test) / sizeof(test[0]); i++)
+
+struct test_fail {
+        const char *str;
+        unsigned int base;
+};
+
+#define DEFINE_TEST_FAIL(test)  \
+        const struct test_fail test[] __initdata
+
+#define DECLARE_TEST_OK(type, test_type)        \
+        test_type {                             \
+                const char *str;                \
+                unsigned int base;              \
+                type expected_res;              \
+        }
+
+#define DEFINE_TEST_OK(type, test)      \
+        const type test[] __initdata
+
+#define TEST_FAIL(fn, type, fmt, test)                                  \
+{                                                                       \
+        unsigned int i;                                                 \
+                                                                        \
+        for_each_test(i, test) {                                        \
+                const struct test_fail *t = &test[i];                   \
+                type tmp;                                               \
+                int rv;                                                 \
+                                                                        \
+                tmp = 0;                                                \
+                rv = fn(t->str, t->base, &tmp);                         \
+                if (rv >= 0) {                                          \
+                        WARN(1, "str '%s', base %u, expected -E, got %d/" fmt "\n",     \
+                                t->str, t->base, rv, tmp);              \
+                        continue;                                       \
+                }                                                       \
+        }                                                               \
+}
+
+#define TEST_OK(fn, type, fmt, test)                                    \
+{                                                                       \
+        unsigned int i;                                                 \
+                                                                        \
+        for_each_test(i, test) {                                        \
+                const typeof(test[0]) *t = &test[i];                    \
+                type res;                                               \
+                int rv;                                                 \
+                                                                        \
+                rv = fn(t->str, t->base, &res);                         \
+                if (rv != 0) {                                          \
+                        WARN(1, "str '%s', base %u, expected 0/" fmt ", got %d\n",      \
+                                t->str, t->base, t->expected_res, rv);  \
+                        continue;                                       \
+                }                                                       \
+                if (res != t->expected_res) {                           \
+                        WARN(1, "str '%s', base %u, expected " fmt ", got " fmt "\n",   \
+                                t->str, t->base, t->expected_res, res); \
+                        continue;                                       \
+                }                                                       \
+        }                                                               \
+}
+
+static void __init test_kstrtoull_ok(void)
+{
+        DECLARE_TEST_OK(unsigned long long, struct test_ull);
+        static DEFINE_TEST_OK(struct test_ull, test_ull_ok) = {
+                {"0",   10,     0ULL},
+                {"1",   10,     1ULL},
+                {"127", 10,     127ULL},
+                {"128", 10,     128ULL},
+                {"129", 10,     129ULL},
+                {"255", 10,     255ULL},
+                {"256", 10,     256ULL},
+                {"257", 10,     257ULL},
+                {"32767",       10,     32767ULL},
+                {"32768",       10,     32768ULL},
+                {"32769",       10,     32769ULL},
+                {"65535",       10,     65535ULL},
+                {"65536",       10,     65536ULL},
+                {"65537",       10,     65537ULL},
+                {"2147483647",  10,     2147483647ULL},
+                {"2147483648",  10,     2147483648ULL},
+                {"2147483649",  10,     2147483649ULL},
+                {"4294967295",  10,     4294967295ULL},
+                {"4294967296",  10,     4294967296ULL},
+                {"4294967297",  10,     4294967297ULL},
+                {"9223372036854775807", 10,     9223372036854775807ULL},
+                {"9223372036854775808", 10,     9223372036854775808ULL},
+                {"9223372036854775809", 10,     9223372036854775809ULL},
+                {"18446744073709551614",        10,     18446744073709551614ULL},
+                {"18446744073709551615",        10,     18446744073709551615ULL},
+
+                {"00",          8,      00ULL},
+                {"01",          8,      01ULL},
+                {"0177",        8,      0177ULL},
+                {"0200",        8,      0200ULL},
+                {"0201",        8,      0201ULL},
+                {"0377",        8,      0377ULL},
+                {"0400",        8,      0400ULL},
+                {"0401",        8,      0401ULL},
+                {"077777",      8,      077777ULL},
+                {"0100000",     8,      0100000ULL},
+                {"0100001",     8,      0100001ULL},
+                {"0177777",     8,      0177777ULL},
+                {"0200000",     8,      0200000ULL},
+                {"0200001",     8,      0200001ULL},
+                {"017777777777",        8,      017777777777ULL},
+                {"020000000000",        8,      020000000000ULL},
+                {"020000000001",        8,      020000000001ULL},
+                {"037777777777",        8,      037777777777ULL},
+                {"040000000000",        8,      040000000000ULL},
+                {"040000000001",        8,      040000000001ULL},
+                {"0777777777777777777777",      8,      0777777777777777777777ULL},
+                {"01000000000000000000000",     8,      01000000000000000000000ULL},
+                {"01000000000000000000001",     8,      01000000000000000000001ULL},
+                {"01777777777777777777776",     8,      01777777777777777777776ULL},
+                {"01777777777777777777777",     8,      01777777777777777777777ULL},
+
+                {"0x0",         16,     0x0ULL},
+                {"0x1",         16,     0x1ULL},
+                {"0x7f",        16,     0x7fULL},
+                {"0x80",        16,     0x80ULL},
+                {"0x81",        16,     0x81ULL},
+                {"0xff",        16,     0xffULL},
+                {"0x100",       16,     0x100ULL},
+                {"0x101",       16,     0x101ULL},
+                {"0x7fff",      16,     0x7fffULL},
+                {"0x8000",      16,     0x8000ULL},
+                {"0x8001",      16,     0x8001ULL},
+                {"0xffff",      16,     0xffffULL},
+                {"0x10000",     16,     0x10000ULL},
+                {"0x10001",     16,     0x10001ULL},
+                {"0x7fffffff",  16,     0x7fffffffULL},
+                {"0x80000000",  16,     0x80000000ULL},
+                {"0x80000001",  16,     0x80000001ULL},
+                {"0xffffffff",  16,     0xffffffffULL},
+                {"0x100000000", 16,     0x100000000ULL},
+                {"0x100000001", 16,     0x100000001ULL},
+                {"0x7fffffffffffffff",  16,     0x7fffffffffffffffULL},
+                {"0x8000000000000000",  16,     0x8000000000000000ULL},
+                {"0x8000000000000001",  16,     0x8000000000000001ULL},
+                {"0xfffffffffffffffe",  16,     0xfffffffffffffffeULL},
+                {"0xffffffffffffffff",  16,     0xffffffffffffffffULL},
+
+                {"0\n", 0,      0ULL},
+        };
+        TEST_OK(kstrtoull, unsigned long long, "%llu", test_ull_ok);
+}
+
+static void __init test_kstrtoull_fail(void)
+{
+        static DEFINE_TEST_FAIL(test_ull_fail) = {
+                {"",    0},
+                {"",    8},
+                {"",    10},
+                {"",    16},
+                {"\n",  0},
+                {"\n",  8},
+                {"\n",  10},
+                {"\n",  16},
+                {"\n0", 0},
+                {"\n0", 8},
+                {"\n0", 10},
+                {"\n0", 16},
+                {"+",   0},
+                {"+",   8},
+                {"+",   10},
+                {"+",   16},
+                {"-",   0},
+                {"-",   8},
+                {"-",   10},
+                {"-",   16},
+                {"0x",  0},
+                {"0x",  16},
+                {"0X",  0},
+                {"0X",  16},
+                {"0 ",  0},
+                {"1+",  0},
+                {"1-",  0},
+                {" 2",  0},
+                /* base autodetection */
+                {"0x0z",        0},
+                {"0z",          0},
+                {"a",           0},
+                /* digit >= base */
+                {"2",   2},
+                {"8",   8},
+                {"a",   10},
+                {"A",   10},
+                {"g",   16},
+                {"G",   16},
+                /* overflow */
+                {"10000000000000000000000000000000000000000000000000000000000000000",   2},
+                {"2000000000000000000000",      8},
+                {"18446744073709551616",        10},
+                {"10000000000000000",   16},
+                /* negative */
+                {"-0", 0},
+                {"-0", 8},
+                {"-0", 10},
+                {"-0", 16},
+                {"-1", 0},
+                {"-1", 8},
+                {"-1", 10},
+                {"-1", 16},
+                /* sign is first character if any */
+                {"-+1", 0},
+                {"-+1", 8},
+                {"-+1", 10},
+                {"-+1", 16},
+                /* nothing after \n */
+                {"0\n0", 0},
+                {"0\n0", 8},
+                {"0\n0", 10},
+                {"0\n0", 16},
+                {"0\n+", 0},
+                {"0\n+", 8},
+                {"0\n+", 10},
+                {"0\n+", 16},
+                {"0\n-", 0},
+                {"0\n-", 8},
+                {"0\n-", 10},
+                {"0\n-", 16},
+                {"0\n ", 0},
+                {"0\n ", 8},
+                {"0\n ", 10},
+                {"0\n ", 16},
+        };
+        TEST_FAIL(kstrtoull, unsigned long long, "%llu", test_ull_fail);
+}
+
+static void __init test_kstrtoll_ok(void)
+{
+        DECLARE_TEST_OK(long long, struct test_ll);
+        static DEFINE_TEST_OK(struct test_ll, test_ll_ok) = {
+                {"0",   10,     0LL},
+                {"1",   10,     1LL},
+                {"127", 10,     127LL},
+                {"128", 10,     128LL},
+                {"129", 10,     129LL},
+                {"255", 10,     255LL},
+                {"256", 10,     256LL},
+                {"257", 10,     257LL},
+                {"32767",       10,     32767LL},
+                {"32768",       10,     32768LL},
+                {"32769",       10,     32769LL},
+                {"65535",       10,     65535LL},
+                {"65536",       10,     65536LL},
+                {"65537",       10,     65537LL},
+                {"2147483647",  10,     2147483647LL},
+                {"2147483648",  10,     2147483648LL},
+                {"2147483649",  10,     2147483649LL},
+                {"4294967295",  10,     4294967295LL},
+                {"4294967296",  10,     4294967296LL},
+                {"4294967297",  10,     4294967297LL},
+                {"9223372036854775807", 10,     9223372036854775807LL},
+
+                {"-1",  10,     -1LL},
+                {"-2",  10,     -2LL},
+                {"-9223372036854775808",        10,     LLONG_MIN},
+        };
+        TEST_OK(kstrtoll, long long, "%lld", test_ll_ok);
+}
+
+static void __init test_kstrtoll_fail(void)
+{
+        static DEFINE_TEST_FAIL(test_ll_fail) = {
+                {"9223372036854775808", 10},
+                {"9223372036854775809", 10},
+                {"18446744073709551614",        10},
+                {"18446744073709551615",        10},
+                {"-9223372036854775809",        10},
+                {"-18446744073709551614",       10},
+                {"-18446744073709551615",       10},
+                /* negative zero isn't an integer in Linux */
+                {"-0",  0},
+                {"-0",  8},
+                {"-0",  10},
+                {"-0",  16},
+                /* sign is first character if any */
+                {"-+1", 0},
+                {"-+1", 8},
+                {"-+1", 10},
+                {"-+1", 16},
+        };
+        TEST_FAIL(kstrtoll, long long, "%lld", test_ll_fail);
+}
+
+static void __init test_kstrtou64_ok(void)
+{
+        DECLARE_TEST_OK(u64, struct test_u64);
+        static DEFINE_TEST_OK(struct test_u64, test_u64_ok) = {
+                {"0",   10,     0},
+                {"1",   10,     1},
+                {"126", 10,     126},
+                {"127", 10,     127},
+                {"128", 10,     128},
+                {"129", 10,     129},
+                {"254", 10,     254},
+                {"255", 10,     255},
+                {"256", 10,     256},
+                {"257", 10,     257},
+                {"32766",       10,     32766},
+                {"32767",       10,     32767},
+                {"32768",       10,     32768},
+                {"32769",       10,     32769},
+                {"65534",       10,     65534},
+                {"65535",       10,     65535},
+                {"65536",       10,     65536},
+                {"65537",       10,     65537},
+                {"2147483646",  10,     2147483646},
+                {"2147483647",  10,     2147483647},
+                {"2147483648",  10,     2147483648},
+                {"2147483649",  10,     2147483649},
+                {"4294967294",  10,     4294967294},
+                {"4294967295",  10,     4294967295},
+                {"4294967296",  10,     4294967296},
+                {"4294967297",  10,     4294967297},
+                {"9223372036854775806", 10,     9223372036854775806ULL},
+                {"9223372036854775807", 10,     9223372036854775807ULL},
+                {"9223372036854775808", 10,     9223372036854775808ULL},
+                {"9223372036854775809", 10,     9223372036854775809ULL},
+                {"18446744073709551614",        10,     18446744073709551614ULL},
+                {"18446744073709551615",        10,     18446744073709551615ULL},
+        };
+        TEST_OK(kstrtou64, u64, "%llu", test_u64_ok);
+}
+
+static void __init test_kstrtou64_fail(void)
+{
+        static DEFINE_TEST_FAIL(test_u64_fail) = {
+                {"-2",  10},
+                {"-1",  10},
+                {"18446744073709551616",        10},
+                {"18446744073709551617",        10},
+        };
+        TEST_FAIL(kstrtou64, u64, "%llu", test_u64_fail);
+}
+
+static void __init test_kstrtos64_ok(void)
+{
+        DECLARE_TEST_OK(s64, struct test_s64);
+        static DEFINE_TEST_OK(struct test_s64, test_s64_ok) = {
+                {"-128",        10,     -128},
+                {"-127",        10,     -127},
+                {"-1",  10,     -1},
+                {"0",   10,     0},
+                {"1",   10,     1},
+                {"126", 10,     126},
+                {"127", 10,     127},
+                {"128", 10,     128},
+                {"129", 10,     129},
+                {"254", 10,     254},
+                {"255", 10,     255},
+                {"256", 10,     256},
+                {"257", 10,     257},
+                {"32766",       10,     32766},
+                {"32767",       10,     32767},
+                {"32768",       10,     32768},
+                {"32769",       10,     32769},
+                {"65534",       10,     65534},
+                {"65535",       10,     65535},
+                {"65536",       10,     65536},
+                {"65537",       10,     65537},
+                {"2147483646",  10,     2147483646},
+                {"2147483647",  10,     2147483647},
+                {"2147483648",  10,     2147483648},
+                {"2147483649",  10,     2147483649},
+                {"4294967294",  10,     4294967294},
+                {"4294967295",  10,     4294967295},
+                {"4294967296",  10,     4294967296},
+                {"4294967297",  10,     4294967297},
+                {"9223372036854775806", 10,     9223372036854775806LL},
+                {"9223372036854775807", 10,     9223372036854775807LL},
+        };
+        TEST_OK(kstrtos64, s64, "%lld", test_s64_ok);
+}
+
+static void __init test_kstrtos64_fail(void)
+{
+        static DEFINE_TEST_FAIL(test_s64_fail) = {
+                {"9223372036854775808", 10},
+                {"9223372036854775809", 10},
+                {"18446744073709551614",        10},
+                {"18446744073709551615",        10},
+                {"18446744073709551616",        10},
+                {"18446744073709551617",        10},
+        };
+        TEST_FAIL(kstrtos64, s64, "%lld", test_s64_fail);
+}
+
+static void __init test_kstrtou32_ok(void)
+{
+        DECLARE_TEST_OK(u32, struct test_u32);
+        static DEFINE_TEST_OK(struct test_u32, test_u32_ok) = {
+                {"0",   10,     0},
+                {"1",   10,     1},
+                {"126", 10,     126},
+                {"127", 10,     127},
+                {"128", 10,     128},
+                {"129", 10,     129},
+                {"254", 10,     254},
+                {"255", 10,     255},
+                {"256", 10,     256},
+                {"257", 10,     257},
+                {"32766",       10,     32766},
+                {"32767",       10,     32767},
+                {"32768",       10,     32768},
+                {"32769",       10,     32769},
+                {"65534",       10,     65534},
+                {"65535",       10,     65535},
+                {"65536",       10,     65536},
+                {"65537",       10,     65537},
+                {"2147483646",  10,     2147483646},
+                {"2147483647",  10,     2147483647},
+                {"2147483648",  10,     2147483648},
+                {"2147483649",  10,     2147483649},
+                {"4294967294",  10,     4294967294},
+                {"4294967295",  10,     4294967295},
+        };
+        TEST_OK(kstrtou32, u32, "%u", test_u32_ok);
+}
+
+static void __init test_kstrtou32_fail(void)
+{
+        static DEFINE_TEST_FAIL(test_u32_fail) = {
+                {"-2",  10},
+                {"-1",  10},
+                {"4294967296",  10},
+                {"4294967297",  10},
+                {"9223372036854775806", 10},
+                {"9223372036854775807", 10},
+                {"9223372036854775808", 10},
+                {"9223372036854775809", 10},
+                {"18446744073709551614",        10},
+                {"18446744073709551615",        10},
+                {"18446744073709551616",        10},
+                {"18446744073709551617",        10},
+        };
+        TEST_FAIL(kstrtou32, u32, "%u", test_u32_fail);
+}
+
+static void __init test_kstrtos32_ok(void)
+{
+        DECLARE_TEST_OK(s32, struct test_s32);
+        static DEFINE_TEST_OK(struct test_s32, test_s32_ok) = {
+                {"-128",        10,     -128},
+                {"-127",        10,     -127},
+                {"-1",  10,     -1},
+                {"0",   10,     0},
+                {"1",   10,     1},
+                {"126", 10,     126},
+                {"127", 10,     127},
+                {"128", 10,     128},
+                {"129", 10,     129},
+                {"254", 10,     254},
+                {"255", 10,     255},
+                {"256", 10,     256},
+                {"257", 10,     257},
+                {"32766",       10,     32766},
+                {"32767",       10,     32767},
+                {"32768",       10,     32768},
+                {"32769",       10,     32769},
+                {"65534",       10,     65534},
+                {"65535",       10,     65535},
+                {"65536",       10,     65536},
+                {"65537",       10,     65537},
+                {"2147483646",  10,     2147483646},
+                {"2147483647",  10,     2147483647},
+        };
+        TEST_OK(kstrtos32, s32, "%d", test_s32_ok);
+}
+
+static void __init test_kstrtos32_fail(void)
+{
+        static DEFINE_TEST_FAIL(test_s32_fail) = {
+                {"2147483648",  10},
+                {"2147483649",  10},
+                {"4294967294",  10},
+                {"4294967295",  10},
+                {"4294967296",  10},
+                {"4294967297",  10},
+                {"9223372036854775806", 10},
+                {"9223372036854775807", 10},
+                {"9223372036854775808", 10},
+                {"9223372036854775809", 10},
+                {"18446744073709551614",        10},
+                {"18446744073709551615",        10},
+                {"18446744073709551616",        10},
+                {"18446744073709551617",        10},
+        };
+        TEST_FAIL(kstrtos32, s32, "%d", test_s32_fail);
+}
+
+static void __init test_kstrtou16_ok(void)
+{
+        DECLARE_TEST_OK(u16, struct test_u16);
+        static DEFINE_TEST_OK(struct test_u16, test_u16_ok) = {
+                {"0",   10,     0},
+                {"1",   10,     1},
+                {"126", 10,     126},
+                {"127", 10,     127},
+                {"128", 10,     128},
+                {"129", 10,     129},
+                {"254", 10,     254},
+                {"255", 10,     255},
+                {"256", 10,     256},
+                {"257", 10,     257},
+                {"32766",       10,     32766},
+                {"32767",       10,     32767},
+                {"32768",       10,     32768},
+                {"32769",       10,     32769},
+                {"65534",       10,     65534},
+                {"65535",       10,     65535},
+        };
+        TEST_OK(kstrtou16, u16, "%hu", test_u16_ok);
+}
+
+static void __init test_kstrtou16_fail(void)
+{
+        static DEFINE_TEST_FAIL(test_u16_fail) = {
+                {"-2",  10},
+                {"-1",  10},
+                {"65536",       10},
+                {"65537",       10},
+                {"2147483646",  10},
+                {"2147483647",  10},
+                {"2147483648",  10},
+                {"2147483649",  10},
+                {"4294967294",  10},
+                {"4294967295",  10},
+                {"4294967296",  10},
+                {"4294967297",  10},
+                {"9223372036854775806", 10},
+                {"9223372036854775807", 10},
+                {"9223372036854775808", 10},
+                {"9223372036854775809", 10},
+                {"18446744073709551614",        10},
+                {"18446744073709551615",        10},
+                {"18446744073709551616",        10},
+                {"18446744073709551617",        10},
+        };
+        TEST_FAIL(kstrtou16, u16, "%hu", test_u16_fail);
+}
+
+static void __init test_kstrtos16_ok(void)
+{
+        DECLARE_TEST_OK(s16, struct test_s16);
+        static DEFINE_TEST_OK(struct test_s16, test_s16_ok) = {
+                {"-130",        10,     -130},
+                {"-129",        10,     -129},
+                {"-128",        10,     -128},
+                {"-127",        10,     -127},
+                {"-1",  10,     -1},
+                {"0",   10,     0},
+                {"1",   10,     1},
+                {"126", 10,     126},
+                {"127", 10,     127},
+                {"128", 10,     128},
+                {"129", 10,     129},
+                {"254", 10,     254},
+                {"255", 10,     255},
+                {"256", 10,     256},
+                {"257", 10,     257},
+                {"32766",       10,     32766},
+                {"32767",       10,     32767},
+        };
+        TEST_OK(kstrtos16, s16, "%hd", test_s16_ok);
+}
+
+static void __init test_kstrtos16_fail(void)
+{
+        static DEFINE_TEST_FAIL(test_s16_fail) = {
+                {"32768",       10},
+                {"32769",       10},
+                {"65534",       10},
+                {"65535",       10},
+                {"65536",       10},
+                {"65537",       10},
+                {"2147483646",  10},
+                {"2147483647",  10},
+                {"2147483648",  10},
+                {"2147483649",  10},
+                {"4294967294",  10},
+                {"4294967295",  10},
+                {"4294967296",  10},
+                {"4294967297",  10},
+                {"9223372036854775806", 10},
+                {"9223372036854775807", 10},
+                {"9223372036854775808", 10},
+                {"9223372036854775809", 10},
+                {"18446744073709551614",        10},
+                {"18446744073709551615",        10},
+                {"18446744073709551616",        10},
+                {"18446744073709551617",        10},
+        };
+        TEST_FAIL(kstrtos16, s16, "%hd", test_s16_fail);
+}
+
+static void __init test_kstrtou8_ok(void)
+{
+        DECLARE_TEST_OK(u8, struct test_u8);
+        static DEFINE_TEST_OK(struct test_u8, test_u8_ok) = {
+                {"0",   10,     0},
+                {"1",   10,     1},
+                {"126", 10,     126},
+                {"127", 10,     127},
+                {"128", 10,     128},
+                {"129", 10,     129},
+                {"254", 10,     254},
+                {"255", 10,     255},
+        };
+        TEST_OK(kstrtou8, u8, "%hhu", test_u8_ok);
+}
+
+static void __init test_kstrtou8_fail(void)
+{
+        static DEFINE_TEST_FAIL(test_u8_fail) = {
+                {"-2",  10},
+                {"-1",  10},
+                {"256", 10},
+                {"257", 10},
+                {"32766",       10},
+                {"32767",       10},
+                {"32768",       10},
+                {"32769",       10},
+                {"65534",       10},
+                {"65535",       10},
+                {"65536",       10},
+                {"65537",       10},
+                {"2147483646",  10},
+                {"2147483647",  10},
+                {"2147483648",  10},
+                {"2147483649",  10},
+                {"4294967294",  10},
+                {"4294967295",  10},
+                {"4294967296",  10},
+                {"4294967297",  10},
+                {"9223372036854775806", 10},
+                {"9223372036854775807", 10},
+                {"9223372036854775808", 10},
+                {"9223372036854775809", 10},
+                {"18446744073709551614",        10},
+                {"18446744073709551615",        10},
+                {"18446744073709551616",        10},
+                {"18446744073709551617",        10},
+        };
+        TEST_FAIL(kstrtou8, u8, "%hhu", test_u8_fail);
+}
+
+static void __init test_kstrtos8_ok(void)
+{
+        DECLARE_TEST_OK(s8, struct test_s8);
+        static DEFINE_TEST_OK(struct test_s8, test_s8_ok) = {
+                {"-128",        10,     -128},
+                {"-127",        10,     -127},
+                {"-1",  10,     -1},
+                {"0",   10,     0},
+                {"1",   10,     1},
+                {"126", 10,     126},
+                {"127", 10,     127},
+        };
+        TEST_OK(kstrtos8, s8, "%hhd", test_s8_ok);
+}
+
+static void __init test_kstrtos8_fail(void)
+{
+        static DEFINE_TEST_FAIL(test_s8_fail) = {
+                {"-130",        10},
+                {"-129",        10},
+                {"128", 10},
+                {"129", 10},
+                {"254", 10},
+                {"255", 10},
+                {"256", 10},
+                {"257", 10},
+                {"32766",       10},
+                {"32767",       10},
+                {"32768",       10},
+                {"32769",       10},
+                {"65534",       10},
+                {"65535",       10},
+                {"65536",       10},
+                {"65537",       10},
+                {"2147483646",  10},
+                {"2147483647",  10},
+                {"2147483648",  10},
+                {"2147483649",  10},
+                {"4294967294",  10},
+                {"4294967295",  10},
+                {"4294967296",  10},
+                {"4294967297",  10},
+                {"9223372036854775806", 10},
+                {"9223372036854775807", 10},
+                {"9223372036854775808", 10},
+                {"9223372036854775809", 10},
+                {"18446744073709551614",        10},
+                {"18446744073709551615",        10},
+                {"18446744073709551616",        10},
+                {"18446744073709551617",        10},
+        };
+        TEST_FAIL(kstrtos8, s8, "%hhd", test_s8_fail);
+}
+
+static int __init test_kstrtox_init(void)
+{
+        test_kstrtoull_ok();
+        test_kstrtoull_fail();
+        test_kstrtoll_ok();
+        test_kstrtoll_fail();
+
+        test_kstrtou64_ok();
+        test_kstrtou64_fail();
+        test_kstrtos64_ok();
+        test_kstrtos64_fail();
+
+        test_kstrtou32_ok();
+        test_kstrtou32_fail();
+        test_kstrtos32_ok();
+        test_kstrtos32_fail();
+
+        test_kstrtou16_ok();
+        test_kstrtou16_fail();
+        test_kstrtos16_ok();
+        test_kstrtos16_fail();
+
+        test_kstrtou8_ok();
+        test_kstrtou8_fail();
+        test_kstrtos8_ok();
+        test_kstrtos8_fail();
+        return -EINVAL;
+}
+module_init(test_kstrtox_init);
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index d3023df8477f..02bcdd5feac4 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -120,147 +120,6 @@ long long simple_strtoll(const char *cp, char **endp, unsigned int base)
 }
 EXPORT_SYMBOL(simple_strtoll);
 
-/**
- * strict_strtoul - convert a string to an unsigned long strictly
- * @cp: The string to be converted
- * @base: The number base to use
- * @res: The converted result value
- *
- * strict_strtoul converts a string to an unsigned long only if the
- * string is really an unsigned long string, any string containing
- * any invalid char at the tail will be rejected and -EINVAL is returned,
- * only a newline char at the tail is acceptible because people generally
- * change a module parameter in the following way:
- *
- *      echo 1024 > /sys/module/e1000/parameters/copybreak
- *
- * echo will append a newline to the tail.
- *
- * It returns 0 if conversion is successful and *res is set to the converted
- * value, otherwise it returns -EINVAL and *res is set to 0.
- *
- * simple_strtoul just ignores the successive invalid characters and
- * return the converted value of prefix part of the string.
- */
-int strict_strtoul(const char *cp, unsigned int base, unsigned long *res)
-{
-        char *tail;
-        unsigned long val;
-
-        *res = 0;
-        if (!*cp)
-                return -EINVAL;
-
-        val = simple_strtoul(cp, &tail, base);
-        if (tail == cp)
-                return -EINVAL;
-
-        if ((tail[0] == '\0') || (tail[0] == '\n' && tail[1] == '\0')) {
-                *res = val;
-                return 0;
-        }
-
-        return -EINVAL;
-}
-EXPORT_SYMBOL(strict_strtoul);
-
-/**
- * strict_strtol - convert a string to a long strictly
- * @cp: The string to be converted
- * @base: The number base to use
- * @res: The converted result value
- *
- * strict_strtol is similiar to strict_strtoul, but it allows the first
- * character of a string is '-'.
- *
- * It returns 0 if conversion is successful and *res is set to the converted
- * value, otherwise it returns -EINVAL and *res is set to 0.
- */
-int strict_strtol(const char *cp, unsigned int base, long *res)
-{
-        int ret;
-        if (*cp == '-') {
-                ret = strict_strtoul(cp + 1, base, (unsigned long *)res);
-                if (!ret)
-                        *res = -(*res);
-        } else {
-                ret = strict_strtoul(cp, base, (unsigned long *)res);
-        }
-
-        return ret;
-}
-EXPORT_SYMBOL(strict_strtol);
-
-/**
- * strict_strtoull - convert a string to an unsigned long long strictly
- * @cp: The string to be converted
- * @base: The number base to use
- * @res: The converted result value
- *
- * strict_strtoull converts a string to an unsigned long long only if the
- * string is really an unsigned long long string, any string containing
- * any invalid char at the tail will be rejected and -EINVAL is returned,
- * only a newline char at the tail is acceptible because people generally
- * change a module parameter in the following way:
- *
- *      echo 1024 > /sys/module/e1000/parameters/copybreak
- *
- * echo will append a newline to the tail of the string.
- *
- * It returns 0 if conversion is successful and *res is set to the converted
- * value, otherwise it returns -EINVAL and *res is set to 0.
- *
- * simple_strtoull just ignores the successive invalid characters and
- * return the converted value of prefix part of the string.
- */
-int strict_strtoull(const char *cp, unsigned int base, unsigned long long *res)
-{
-        char *tail;
-        unsigned long long val;
-
-        *res = 0;
-        if (!*cp)
-                return -EINVAL;
-
-        val = simple_strtoull(cp, &tail, base);
-        if (tail == cp)
-                return -EINVAL;
-        if ((tail[0] == '\0') || (tail[0] == '\n' && tail[1] == '\0')) {
-                *res = val;
-                return 0;
-        }
-
-        return -EINVAL;
-}
-EXPORT_SYMBOL(strict_strtoull);
-
-/**
- * strict_strtoll - convert a string to a long long strictly
- * @cp: The string to be converted
- * @base: The number base to use
- * @res: The converted result value
- *
- * strict_strtoll is similiar to strict_strtoull, but it allows the first
- * character of a string is '-'.
- *
- * It returns 0 if conversion is successful and *res is set to the converted
- * value, otherwise it returns -EINVAL and *res is set to 0.
- */
-int strict_strtoll(const char *cp, unsigned int base, long long *res)
-{
-        int ret;
-        if (*cp == '-') {
-                ret = strict_strtoull(cp + 1, base, (unsigned long long *)res);
-                if (!ret)
-                        *res = -(*res);
-        } else {
-                ret = strict_strtoull(cp, base, (unsigned long long *)res);
-        }
-
-        return ret;
-}
-EXPORT_SYMBOL(strict_strtoll);
-
 static noinline_for_stack
 int skip_atoi(const char **s)
 {
@@ -991,7 +850,7 @@ static noinline_for_stack
 char *pointer(const char *fmt, char *buf, char *end, void *ptr,
               struct printf_spec spec)
 {
-        if (!ptr) {
+        if (!ptr && *fmt != 'K') {
                 /*
                  * Print (null) with the same width as a pointer so it makes
                  * tabular output look nice.
@@ -1047,16 +906,12 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
                         if (spec.field_width == -1)
                                 spec.field_width = 2 * sizeof(void *);
                         return string(buf, end, "pK-error", spec);
-                } else if ((kptr_restrict == 0) ||
-                         (kptr_restrict == 1 &&
-                          has_capability_noaudit(current, CAP_SYSLOG)))
-                        break;
-
-                if (spec.field_width == -1) {
-                        spec.field_width = 2 * sizeof(void *);
-                        spec.flags |= ZEROPAD;
                 }
-                return number(buf, end, 0, spec);
+                if (!((kptr_restrict == 0) ||
+                      (kptr_restrict == 1 &&
+                       has_capability_noaudit(current, CAP_SYSLOG))))
+                        ptr = NULL;
+                break;
         }
         spec.flags |= SMALL;
         if (spec.field_width == -1) {
diff --git a/lib/zlib_deflate/deflate.c b/lib/zlib_deflate/deflate.c
index 46a31e5f49c3..d63381e8e333 100644
--- a/lib/zlib_deflate/deflate.c
+++ b/lib/zlib_deflate/deflate.c
@@ -176,6 +176,7 @@ int zlib_deflateInit2(
     deflate_state *s;
     int noheader = 0;
     deflate_workspace *mem;
+    char *next;
 
     ush *overlay;
     /* We overlay pending_buf and d_buf+l_buf. This works since the average
@@ -199,6 +200,21 @@ int zlib_deflateInit2(
         strategy < 0 || strategy > Z_HUFFMAN_ONLY) {
         return Z_STREAM_ERROR;
     }
+
+    /*
+     * Direct the workspace's pointers to the chunks that were allocated
+     * along with the deflate_workspace struct.
+     */
+    next = (char *) mem;
+    next += sizeof(*mem);
+    mem->window_memory = (Byte *) next;
+    next += zlib_deflate_window_memsize(windowBits);
+    mem->prev_memory = (Pos *) next;
+    next += zlib_deflate_prev_memsize(windowBits);
+    mem->head_memory = (Pos *) next;
+    next += zlib_deflate_head_memsize(memLevel);
+    mem->overlay_memory = next;
+
     s = (deflate_state *) &(mem->deflate_memory);
     strm->state = (struct internal_state *)s;
     s->strm = strm;
@@ -1247,7 +1263,18 @@ static block_state deflate_slow(
     return flush == Z_FINISH ? finish_done : block_done;
 }
 
-int zlib_deflate_workspacesize(void)
+int zlib_deflate_workspacesize(int windowBits, int memLevel)
 {
-    return sizeof(deflate_workspace);
+    if (windowBits < 0) /* undocumented feature: suppress zlib header */
+        windowBits = -windowBits;
+
+    /* Since the return value is typically passed to vmalloc() unchecked... */
+    BUG_ON(memLevel < 1 || memLevel > MAX_MEM_LEVEL || windowBits < 9 ||
+                                                        windowBits > 15);
+
+    return sizeof(deflate_workspace)
+        + zlib_deflate_window_memsize(windowBits)
+        + zlib_deflate_prev_memsize(windowBits)
+        + zlib_deflate_head_memsize(memLevel)
+        + zlib_deflate_overlay_memsize(memLevel);
 }
diff --git a/lib/zlib_deflate/defutil.h b/lib/zlib_deflate/defutil.h
index 6b15a909ca3f..b640b6402e99 100644
--- a/lib/zlib_deflate/defutil.h
+++ b/lib/zlib_deflate/defutil.h
@@ -241,12 +241,21 @@ typedef struct deflate_state {
 typedef struct deflate_workspace {
     /* State memory for the deflator */
     deflate_state deflate_memory;
-    Byte window_memory[2 * (1 << MAX_WBITS)];
-    Pos prev_memory[1 << MAX_WBITS];
-    Pos head_memory[1 << (MAX_MEM_LEVEL + 7)];
-    char overlay_memory[(1 << (MAX_MEM_LEVEL + 6)) * (sizeof(ush)+2)];
+    Byte *window_memory;
+    Pos *prev_memory;
+    Pos *head_memory;
+    char *overlay_memory;
 } deflate_workspace;
 
+#define zlib_deflate_window_memsize(windowBits) \
+        (2 * (1 << (windowBits)) * sizeof(Byte))
+#define zlib_deflate_prev_memsize(windowBits) \
+        ((1 << (windowBits)) * sizeof(Pos))
+#define zlib_deflate_head_memsize(memLevel) \
+        ((1 << ((memLevel)+7)) * sizeof(Pos))
+#define zlib_deflate_overlay_memsize(memLevel) \
+        ((1 << ((memLevel)+6)) * (sizeof(ush)+2))
+
 /* Output a byte on the stream.
  * IN assertion: there is enough room in pending_buf.
  */
diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug
index af7cfb43d2f0..8b1a477162dc 100644
--- a/mm/Kconfig.debug
+++ b/mm/Kconfig.debug
@@ -1,27 +1,24 @@
 config DEBUG_PAGEALLOC
         bool "Debug page memory allocations"
-        depends on DEBUG_KERNEL && ARCH_SUPPORTS_DEBUG_PAGEALLOC
-        depends on !HIBERNATION || !PPC && !SPARC
+        depends on DEBUG_KERNEL
+        depends on !HIBERNATION || ARCH_SUPPORTS_DEBUG_PAGEALLOC && !PPC && !SPARC
         depends on !KMEMCHECK
+        select PAGE_POISONING if !ARCH_SUPPORTS_DEBUG_PAGEALLOC
         ---help---
           Unmap pages from the kernel linear mapping after free_pages().
           This results in a large slowdown, but helps to find certain types
           of memory corruption.
 
+          For architectures which don't enable ARCH_SUPPORTS_DEBUG_PAGEALLOC,
+          fill the pages with poison patterns after free_pages() and verify
+          the patterns before alloc_pages().  Additionally,
+          this option cannot be enabled in combination with hibernation as
+          that would result in incorrect warnings of memory corruption after
+          a resume because free pages are not saved to the suspend image.
+
 config WANT_PAGE_DEBUG_FLAGS
         bool
 
 config PAGE_POISONING
-        bool "Debug page memory allocations"
-        depends on DEBUG_KERNEL && !ARCH_SUPPORTS_DEBUG_PAGEALLOC
-        depends on !HIBERNATION
-        select DEBUG_PAGEALLOC
+        bool
         select WANT_PAGE_DEBUG_FLAGS
-        ---help---
-           Fill the pages with poison patterns after free_pages() and verify
-           the patterns before alloc_pages(). This results in a large slowdown,
-           but helps to find certain types of memory corruption.
-
-           This option cannot be enabled in combination with hibernation as
-           that would result in incorrect warnings of memory corruption after
-           a resume because free pages are not saved to the suspend image.
diff --git a/mm/compaction.c b/mm/compaction.c
index 8be430b812de..021a2960ef9e 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -42,8 +42,6 @@ struct compact_control {
         unsigned int order;             /* order a direct compactor needs */
         int migratetype;                /* MOVABLE, RECLAIMABLE etc */
         struct zone *zone;
-
-        int compact_mode;
 };
 
 static unsigned long release_freepages(struct list_head *freelist)
@@ -155,7 +153,6 @@ static void isolate_freepages(struct zone *zone,
          * pages on cc->migratepages. We stop searching if the migrate
          * and free page scanners meet or enough free pages are isolated.
          */
-        spin_lock_irqsave(&zone->lock, flags);
         for (; pfn > low_pfn && cc->nr_migratepages > nr_freepages;
                                         pfn -= pageblock_nr_pages) {
                 unsigned long isolated;
@@ -178,9 +175,19 @@ static void isolate_freepages(struct zone *zone,
                 if (!suitable_migration_target(page))
                         continue;
 
-                /* Found a block suitable for isolating free pages from */
-                isolated = isolate_freepages_block(zone, pfn, freelist);
-                nr_freepages += isolated;
+                /*
+                 * Found a block suitable for isolating free pages from. Now
+                 * we disabled interrupts, double check things are ok and
+                 * isolate the pages. This is to minimise the time IRQs
+                 * are disabled
+                 */
+                isolated = 0;
+                spin_lock_irqsave(&zone->lock, flags);
+                if (suitable_migration_target(page)) {
+                        isolated = isolate_freepages_block(zone, pfn, freelist);
+                        nr_freepages += isolated;
+                }
+                spin_unlock_irqrestore(&zone->lock, flags);
 
                 /*
                  * Record the highest PFN we isolated pages from. When next
@@ -190,7 +197,6 @@ static void isolate_freepages(struct zone *zone,
                 if (isolated)
                         high_pfn = max(high_pfn, pfn);
         }
-        spin_unlock_irqrestore(&zone->lock, flags);
 
         /* split_free_page does not map the pages */
         list_for_each_entry(page, freelist, lru) {
@@ -271,9 +277,27 @@ static unsigned long isolate_migratepages(struct zone *zone,
         }
 
         /* Time to isolate some pages for migration */
+        cond_resched();
         spin_lock_irq(&zone->lru_lock);
         for (; low_pfn < end_pfn; low_pfn++) {
                 struct page *page;
+                bool locked = true;
+
+                /* give a chance to irqs before checking need_resched() */
+                if (!((low_pfn+1) % SWAP_CLUSTER_MAX)) {
+                        spin_unlock_irq(&zone->lru_lock);
+                        locked = false;
+                }
+                if (need_resched() || spin_is_contended(&zone->lru_lock)) {
+                        if (locked)
+                                spin_unlock_irq(&zone->lru_lock);
+                        cond_resched();
+                        spin_lock_irq(&zone->lru_lock);
+                        if (fatal_signal_pending(current))
+                                break;
+                } else if (!locked)
+                        spin_lock_irq(&zone->lru_lock);
+
                 if (!pfn_valid_within(low_pfn))
                         continue;
                 nr_scanned++;
@@ -397,10 +421,7 @@ static int compact_finished(struct zone *zone,
                 return COMPACT_COMPLETE;
 
         /* Compaction run is not finished if the watermark is not met */
-        if (cc->compact_mode != COMPACT_MODE_KSWAPD)
-                watermark = low_wmark_pages(zone);
-        else
-                watermark = high_wmark_pages(zone);
+        watermark = low_wmark_pages(zone);
         watermark += (1 << cc->order);
 
         if (!zone_watermark_ok(zone, cc->order, watermark, 0, 0))
@@ -413,15 +434,6 @@ static int compact_finished(struct zone *zone,
         if (cc->order == -1)
                 return COMPACT_CONTINUE;
 
-        /*
-         * Generating only one page of the right order is not enough
-         * for kswapd, we must continue until we're above the high
-         * watermark as a pool for high order GFP_ATOMIC allocations
-         * too.
-         */
-        if (cc->compact_mode == COMPACT_MODE_KSWAPD)
-                return COMPACT_CONTINUE;
-
         /* Direct compactor: Is a suitable page free? */
         for (order = cc->order; order < MAX_ORDER; order++) {
                 /* Job done if page is free of the right migratetype */
@@ -508,12 +520,13 @@ static int compact_zone(struct zone *zone, struct compact_control *cc)
 
         while ((ret = compact_finished(zone, cc)) == COMPACT_CONTINUE) {
                 unsigned long nr_migrate, nr_remaining;
+                int err;
 
                 if (!isolate_migratepages(zone, cc))
                         continue;
 
                 nr_migrate = cc->nr_migratepages;
-                migrate_pages(&cc->migratepages, compaction_alloc,
+                err = migrate_pages(&cc->migratepages, compaction_alloc,
                                 (unsigned long)cc, false,
                                 cc->sync);
                 update_nr_listpages(cc);
@@ -527,7 +540,7 @@ static int compact_zone(struct zone *zone, struct compact_control *cc)
                                                 nr_remaining);
 
                 /* Release LRU pages not migrated */
-                if (!list_empty(&cc->migratepages)) {
+                if (err) {
                         putback_lru_pages(&cc->migratepages);
                         cc->nr_migratepages = 0;
                 }
@@ -543,8 +556,7 @@ static int compact_zone(struct zone *zone, struct compact_control *cc)
 
 unsigned long compact_zone_order(struct zone *zone,
                                  int order, gfp_t gfp_mask,
-                                 bool sync,
-                                 int compact_mode)
+                                 bool sync)
 {
         struct compact_control cc = {
                 .nr_freepages = 0,
@@ -553,7 +565,6 @@ unsigned long compact_zone_order(struct zone *zone,
                 .migratetype = allocflags_to_migratetype(gfp_mask),
                 .zone = zone,
                 .sync = sync,
-                .compact_mode = compact_mode,
         };
         INIT_LIST_HEAD(&cc.freepages);
         INIT_LIST_HEAD(&cc.migratepages);
@@ -599,8 +610,7 @@ unsigned long try_to_compact_pages(struct zonelist *zonelist,
                                                                 nodemask) {
                 int status;
 
-                status = compact_zone_order(zone, order, gfp_mask, sync,
-                                            COMPACT_MODE_DIRECT_RECLAIM);
+                status = compact_zone_order(zone, order, gfp_mask, sync);
                 rc = max(status, rc);
 
                 /* If a normal allocation would succeed, stop compacting */
@@ -631,7 +641,6 @@ static int compact_node(int nid)
                         .nr_freepages = 0,
                         .nr_migratepages = 0,
                         .order = -1,
-                        .compact_mode = COMPACT_MODE_DIRECT_RECLAIM,
                 };
 
                 zone = &pgdat->node_zones[zoneid];
diff --git a/mm/filemap.c b/mm/filemap.c
index 83a45d35468b..f807afda86f2 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -108,11 +108,11 @@
  */
 
 /*
- * Remove a page from the page cache and free it. Caller has to make
+ * Delete a page from the page cache and free it. Caller has to make
  * sure the page is locked and that nobody else uses it - or that usage
  * is safe.  The caller must hold the mapping's tree_lock.
  */
-void __remove_from_page_cache(struct page *page)
+void __delete_from_page_cache(struct page *page)
 {
         struct address_space *mapping = page->mapping;
 
@@ -137,7 +137,15 @@ void __remove_from_page_cache(struct page *page)
         }
 }
 
-void remove_from_page_cache(struct page *page)
+/**
+ * delete_from_page_cache - delete page from page cache
+ * @page: the page which the kernel is trying to remove from page cache
+ *
+ * This must be called only on pages that have been verified to be in the page
+ * cache and locked.  It will never put the page into the free list, the caller
+ * has a reference on the page.
+ */
+void delete_from_page_cache(struct page *page)
 {
         struct address_space *mapping = page->mapping;
         void (*freepage)(struct page *);
@@ -146,14 +154,15 @@ void remove_from_page_cache(struct page *page)
 
         freepage = mapping->a_ops->freepage;
         spin_lock_irq(&mapping->tree_lock);
-        __remove_from_page_cache(page);
+        __delete_from_page_cache(page);
         spin_unlock_irq(&mapping->tree_lock);
         mem_cgroup_uncharge_cache_page(page);
 
         if (freepage)
                 freepage(page);
+        page_cache_release(page);
 }
-EXPORT_SYMBOL(remove_from_page_cache);
+EXPORT_SYMBOL(delete_from_page_cache);
 
 static int sync_page(void *word)
 {
@@ -387,6 +396,76 @@ int filemap_write_and_wait_range(struct address_space *mapping,
 EXPORT_SYMBOL(filemap_write_and_wait_range);
 
 /**
+ * replace_page_cache_page - replace a pagecache page with a new one
+ * @old:        page to be replaced
+ * @new:        page to replace with
+ * @gfp_mask:   allocation mode
+ *
+ * This function replaces a page in the pagecache with a new one.  On
+ * success it acquires the pagecache reference for the new page and
+ * drops it for the old page.  Both the old and new pages must be
+ * locked.  This function does not add the new page to the LRU, the
+ * caller must do that.
+ *
+ * The remove + add is atomic.  The only way this function can fail is
+ * memory allocation failure.
+ */
+int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask)
+{
+        int error;
+        struct mem_cgroup *memcg = NULL;
+
+        VM_BUG_ON(!PageLocked(old));
+        VM_BUG_ON(!PageLocked(new));
+        VM_BUG_ON(new->mapping);
+
+        /*
+         * This is not page migration, but prepare_migration and
+         * end_migration does enough work for charge replacement.
+         *
+         * In the longer term we probably want a specialized function
+         * for moving the charge from old to new in a more efficient
+         * manner.
+         */
+        error = mem_cgroup_prepare_migration(old, new, &memcg, gfp_mask);
+        if (error)
+                return error;
+
+        error = radix_tree_preload(gfp_mask & ~__GFP_HIGHMEM);
+        if (!error) {
+                struct address_space *mapping = old->mapping;
+                void (*freepage)(struct page *);
+
+                pgoff_t offset = old->index;
+                freepage = mapping->a_ops->freepage;
+
+                page_cache_get(new);
+                new->mapping = mapping;
+                new->index = offset;
+
+                spin_lock_irq(&mapping->tree_lock);
+                __delete_from_page_cache(old);
+                error = radix_tree_insert(&mapping->page_tree, offset, new);
+                BUG_ON(error);
+                mapping->nrpages++;
+                __inc_zone_page_state(new, NR_FILE_PAGES);
+                if (PageSwapBacked(new))
+                        __inc_zone_page_state(new, NR_SHMEM);
+                spin_unlock_irq(&mapping->tree_lock);
+                radix_tree_preload_end();
+                if (freepage)
+                        freepage(old);
+                page_cache_release(old);
+                mem_cgroup_end_migration(memcg, old, new, true);
+        } else {
+                mem_cgroup_end_migration(memcg, old, new, false);
+        }
+
+        return error;
+}
+EXPORT_SYMBOL_GPL(replace_page_cache_page);
+
+/**
  * add_to_page_cache_locked - add a locked page to the pagecache
  * @page:       page to add
  * @mapping:    the page's address_space
@@ -621,8 +700,10 @@ int __lock_page_or_retry(struct page *page, struct mm_struct *mm,
                 __lock_page(page);
                 return 1;
         } else {
-                up_read(&mm->mmap_sem);
-                wait_on_page_locked(page);
+                if (!(flags & FAULT_FLAG_RETRY_NOWAIT)) {
+                        up_read(&mm->mmap_sem);
+                        wait_on_page_locked(page);
+                }
                 return 0;
         }
 }
@@ -782,9 +863,13 @@ repeat:
                 page = radix_tree_deref_slot((void **)pages[i]);
                 if (unlikely(!page))
                         continue;
+
+                /*
+                 * This can only trigger when the entry at index 0 moves out
+                 * of or back to the root: none yet gotten, safe to restart.
+                 */
                 if (radix_tree_deref_retry(page)) {
-                        if (ret)
-                                start = pages[ret-1]->index;
+                        WARN_ON(start | i);
                         goto restart;
                 }
 
@@ -800,6 +885,13 @@ repeat:
                 pages[ret] = page;
                 ret++;
         }
+
+        /*
+         * If all entries were removed before we could secure them,
+         * try again, because callers stop trying once 0 is returned.
+         */
+        if (unlikely(!ret && nr_found))
+                goto restart;
         rcu_read_unlock();
         return ret;
 }
@@ -834,6 +926,11 @@ repeat:
                 page = radix_tree_deref_slot((void **)pages[i]);
                 if (unlikely(!page))
                         continue;
+
+                /*
+                 * This can only trigger when the entry at index 0 moves out
+                 * of or back to the root: none yet gotten, safe to restart.
+                 */
                 if (radix_tree_deref_retry(page))
                         goto restart;
 
@@ -894,6 +991,11 @@ repeat:
                 page = radix_tree_deref_slot((void **)pages[i]);
                 if (unlikely(!page))
                         continue;
+
+                /*
+                 * This can only trigger when the entry at index 0 moves out
+                 * of or back to the root: none yet gotten, safe to restart.
+                 */
                 if (radix_tree_deref_retry(page))
                         goto restart;
 
@@ -909,6 +1011,13 @@ repeat:
                 pages[ret] = page;
                 ret++;
         }
+
+        /*
+         * If all entries were removed before we could secure them,
+         * try again, because callers stop trying once 0 is returned.
+         */
+        if (unlikely(!ret && nr_found))
+                goto restart;
         rcu_read_unlock();
 
         if (ret)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 113e35c47502..0a619e0e2e0b 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -643,23 +643,24 @@ static int __do_huge_pmd_anonymous_page(struct mm_struct *mm,
         return ret;
 }
 
-static inline gfp_t alloc_hugepage_gfpmask(int defrag)
+static inline gfp_t alloc_hugepage_gfpmask(int defrag, gfp_t extra_gfp)
 {
-        return GFP_TRANSHUGE & ~(defrag ? 0 : __GFP_WAIT);
+        return (GFP_TRANSHUGE & ~(defrag ? 0 : __GFP_WAIT)) | extra_gfp;
 }
 
 static inline struct page *alloc_hugepage_vma(int defrag,
                                               struct vm_area_struct *vma,
-                                              unsigned long haddr, int nd)
+                                              unsigned long haddr, int nd,
+                                              gfp_t extra_gfp)
 {
-        return alloc_pages_vma(alloc_hugepage_gfpmask(defrag),
+        return alloc_pages_vma(alloc_hugepage_gfpmask(defrag, extra_gfp),
                                HPAGE_PMD_ORDER, vma, haddr, nd);
 }
 
 #ifndef CONFIG_NUMA
 static inline struct page *alloc_hugepage(int defrag)
 {
-        return alloc_pages(alloc_hugepage_gfpmask(defrag),
+        return alloc_pages(alloc_hugepage_gfpmask(defrag, 0),
                            HPAGE_PMD_ORDER);
 }
 #endif
@@ -678,7 +679,7 @@ int do_huge_pmd_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
                 if (unlikely(khugepaged_enter(vma)))
                         return VM_FAULT_OOM;
                 page = alloc_hugepage_vma(transparent_hugepage_defrag(vma),
-                                          vma, haddr, numa_node_id());
+                                          vma, haddr, numa_node_id(), 0);
                 if (unlikely(!page))
                         goto out;
                 if (unlikely(mem_cgroup_newpage_charge(page, mm, GFP_KERNEL))) {
@@ -799,7 +800,8 @@ static int do_huge_pmd_wp_page_fallback(struct mm_struct *mm,
         }
 
         for (i = 0; i < HPAGE_PMD_NR; i++) {
-                pages[i] = alloc_page_vma_node(GFP_HIGHUSER_MOVABLE,
+                pages[i] = alloc_page_vma_node(GFP_HIGHUSER_MOVABLE |
+                                               __GFP_OTHER_NODE,
                                                vma, address, page_to_nid(page));
                 if (unlikely(!pages[i] ||
                              mem_cgroup_newpage_charge(pages[i], mm,
@@ -902,7 +904,7 @@ int do_huge_pmd_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
         if (transparent_hugepage_enabled(vma) &&
             !transparent_hugepage_debug_cow())
                 new_page = alloc_hugepage_vma(transparent_hugepage_defrag(vma),
-                                              vma, haddr, numa_node_id());
+                                              vma, haddr, numa_node_id(), 0);
         else
                 new_page = NULL;
 
@@ -1779,7 +1781,7 @@ static void collapse_huge_page(struct mm_struct *mm,
          * scalability.
          */
         new_page = alloc_hugepage_vma(khugepaged_defrag(), vma, address,
-                                      node);
+                                      node, __GFP_OTHER_NODE);
         if (unlikely(!new_page)) {
                 up_read(&mm->mmap_sem);
                 *hpage = ERR_PTR(-ENOMEM);
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index bb0b7c128015..06de5aa4d644 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1872,8 +1872,7 @@ static int hugetlb_sysctl_handler_common(bool obey_mempolicy,
         unsigned long tmp;
         int ret;
 
-        if (!write)
-                tmp = h->max_huge_pages;
+        tmp = h->max_huge_pages;
 
         if (write && h->order >= MAX_ORDER)
                 return -EINVAL;
@@ -1938,8 +1937,7 @@ int hugetlb_overcommit_handler(struct ctl_table *table, int write,
         unsigned long tmp;
         int ret;
 
-        if (!write)
-                tmp = h->nr_overcommit_huge_pages;
+        tmp = h->nr_overcommit_huge_pages;
 
         if (write && h->order >= MAX_ORDER)
                 return -EINVAL;
diff --git a/mm/ksm.c b/mm/ksm.c
index c2b2a94f9d67..1bbe785aa559 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -301,20 +301,6 @@ static inline int in_stable_tree(struct rmap_item *rmap_item)
         return rmap_item->address & STABLE_FLAG;
 }
 
-static void hold_anon_vma(struct rmap_item *rmap_item,
-                          struct anon_vma *anon_vma)
-{
-        rmap_item->anon_vma = anon_vma;
-        get_anon_vma(anon_vma);
-}
-
-static void ksm_drop_anon_vma(struct rmap_item *rmap_item)
-{
-        struct anon_vma *anon_vma = rmap_item->anon_vma;
-
-        drop_anon_vma(anon_vma);
-}
-
 /*
  * ksmd, and unmerge_and_remove_all_rmap_items(), must not touch an mm's
  * page tables after it has passed through ksm_exit() - which, if necessary,
@@ -397,7 +383,7 @@ static void break_cow(struct rmap_item *rmap_item)
          * It is not an accident that whenever we want to break COW
          * to undo, we also need to drop a reference to the anon_vma.
          */
-        ksm_drop_anon_vma(rmap_item);
+        put_anon_vma(rmap_item->anon_vma);
 
         down_read(&mm->mmap_sem);
         if (ksm_test_exit(mm))
@@ -466,7 +452,7 @@ static void remove_node_from_stable_tree(struct stable_node *stable_node)
                         ksm_pages_sharing--;
                 else
                         ksm_pages_shared--;
-                ksm_drop_anon_vma(rmap_item);
+                put_anon_vma(rmap_item->anon_vma);
                 rmap_item->address &= PAGE_MASK;
                 cond_resched();
         }
@@ -554,7 +540,7 @@ static void remove_rmap_item_from_tree(struct rmap_item *rmap_item)
                 else
                         ksm_pages_shared--;
 
-                ksm_drop_anon_vma(rmap_item);
+                put_anon_vma(rmap_item->anon_vma);
                 rmap_item->address &= PAGE_MASK;
 
         } else if (rmap_item->address & UNSTABLE_FLAG) {
@@ -949,7 +935,8 @@ static int try_to_merge_with_ksm_page(struct rmap_item *rmap_item,
                 goto out;
 
         /* Must get reference to anon_vma while still holding mmap_sem */
-        hold_anon_vma(rmap_item, vma->anon_vma);
+        rmap_item->anon_vma = vma->anon_vma;
+        get_anon_vma(vma->anon_vma);
 out:
         up_read(&mm->mmap_sem);
         return err;
diff --git a/mm/memblock.c b/mm/memblock.c
index 4618fda975a0..a0562d1a6ad4 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -58,28 +58,6 @@ static unsigned long __init_memblock memblock_addrs_overlap(phys_addr_t base1, p
         return ((base1 < (base2 + size2)) && (base2 < (base1 + size1)));
 }
 
-static long __init_memblock memblock_addrs_adjacent(phys_addr_t base1, phys_addr_t size1,
-                               phys_addr_t base2, phys_addr_t size2)
-{
-        if (base2 == base1 + size1)
-                return 1;
-        else if (base1 == base2 + size2)
-                return -1;
-
-        return 0;
-}
-
-static long __init_memblock memblock_regions_adjacent(struct memblock_type *type,
-                                 unsigned long r1, unsigned long r2)
-{
-        phys_addr_t base1 = type->regions[r1].base;
-        phys_addr_t size1 = type->regions[r1].size;
-        phys_addr_t base2 = type->regions[r2].base;
-        phys_addr_t size2 = type->regions[r2].size;
-
-        return memblock_addrs_adjacent(base1, size1, base2, size2);
-}
-
 long __init_memblock memblock_overlaps_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
 {
         unsigned long i;
@@ -206,14 +184,13 @@ static void __init_memblock memblock_remove_region(struct memblock_type *type, u
                 type->regions[i].size = type->regions[i + 1].size;
         }
         type->cnt--;
-}
 
-/* Assumption: base addr of region 1 < base addr of region 2 */
-static void __init_memblock memblock_coalesce_regions(struct memblock_type *type,
-                unsigned long r1, unsigned long r2)
-{
-        type->regions[r1].size += type->regions[r2].size;
-        memblock_remove_region(type, r2);
+        /* Special case for empty arrays */
+        if (type->cnt == 0) {
+                type->cnt = 1;
+                type->regions[0].base = 0;
+                type->regions[0].size = 0;
+        }
 }
 
 /* Defined below but needed now */
@@ -276,7 +253,7 @@ static int __init_memblock memblock_double_array(struct memblock_type *type)
                 return 0;
 
         /* Add the new reserved region now. Should not fail ! */
-        BUG_ON(memblock_add_region(&memblock.reserved, addr, new_size) < 0);
+        BUG_ON(memblock_add_region(&memblock.reserved, addr, new_size));
 
         /* If the array wasn't our static init one, then free it. We only do
          * that before SLAB is available as later on, we don't know whether
@@ -296,58 +273,99 @@ extern int __init_memblock __weak memblock_memory_can_coalesce(phys_addr_t addr1
         return 1;
 }
 
-static long __init_memblock memblock_add_region(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
+static long __init_memblock memblock_add_region(struct memblock_type *type,
+                                                phys_addr_t base, phys_addr_t size)
 {
-        unsigned long coalesced = 0;
-        long adjacent, i;
-
-        if ((type->cnt == 1) && (type->regions[0].size == 0)) {
-                type->regions[0].base = base;
-                type->regions[0].size = size;
-                return 0;
-        }
+        phys_addr_t end = base + size;
+        int i, slot = -1;
 
-        /* First try and coalesce this MEMBLOCK with another. */
+        /* First try and coalesce this MEMBLOCK with others */
         for (i = 0; i < type->cnt; i++) {
-                phys_addr_t rgnbase = type->regions[i].base;
-                phys_addr_t rgnsize = type->regions[i].size;
+                struct memblock_region *rgn = &type->regions[i];
+                phys_addr_t rend = rgn->base + rgn->size;
+
+                /* Exit if there's no possible hits */
+                if (rgn->base > end || rgn->size == 0)
+                        break;
 
-                if ((rgnbase == base) && (rgnsize == size))
-                        /* Already have this region, so we're done */
+                /* Check if we are fully enclosed within an existing
+                 * block
+                 */
+                if (rgn->base <= base && rend >= end)
                         return 0;
 
-                adjacent = memblock_addrs_adjacent(base, size, rgnbase, rgnsize);
-                /* Check if arch allows coalescing */
-                if (adjacent != 0 && type == &memblock.memory &&
-                    !memblock_memory_can_coalesce(base, size, rgnbase, rgnsize))
-                        break;
-                if (adjacent > 0) {
-                        type->regions[i].base -= size;
-                        type->regions[i].size += size;
-                        coalesced++;
-                        break;
-                } else if (adjacent < 0) {
-                        type->regions[i].size += size;
-                        coalesced++;
-                        break;
+                /* Check if we overlap or are adjacent with the bottom
+                 * of a block.
+                 */
+                if (base < rgn->base && end >= rgn->base) {
+                        /* If we can't coalesce, create a new block */
+                        if (!memblock_memory_can_coalesce(base, size,
+                                                          rgn->base,
+                                                          rgn->size)) {
+                                /* Overlap & can't coalesce are mutually
+                                 * exclusive, if you do that, be prepared
+                                 * for trouble
+                                 */
+                                WARN_ON(end != rgn->base);
+                                goto new_block;
+                        }
+                        /* We extend the bottom of the block down to our
+                         * base
+                         */
+                        rgn->base = base;
+                        rgn->size = rend - base;
+
+                        /* Return if we have nothing else to allocate
+                         * (fully coalesced)
+                         */
+                        if (rend >= end)
+                                return 0;
+
+                        /* We continue processing from the end of the
+                         * coalesced block.
+                         */
+                        base = rend;
+                        size = end - base;
+                }
+
+                /* Now check if we overlap or are adjacent with the
+                 * top of a block
+                 */
+                if (base <= rend && end >= rend) {
+                        /* If we can't coalesce, create a new block */
+                        if (!memblock_memory_can_coalesce(rgn->base,
+                                                          rgn->size,
+                                                          base, size)) {
+                                /* Overlap & can't coalesce are mutually
+                                 * exclusive, if you do that, be prepared
+                                 * for trouble
+                                 */
+                                WARN_ON(rend != base);
+                                goto new_block;
+                        }
+                        /* We adjust our base down to enclose the
+                         * original block and destroy it. It will be
+                         * part of our new allocation. Since we've
+                         * freed an entry, we know we won't fail
+                         * to allocate one later, so we won't risk
+                         * losing the original block allocation.
+                         */
+                        size += (base - rgn->base);
+                        base = rgn->base;
+                        memblock_remove_region(type, i--);
                 }
         }
 
-        /* If we plugged a hole, we may want to also coalesce with the
-         * next region
+        /* If the array is empty, special case, replace the fake
+         * filler region and return
          */
-        if ((i < type->cnt - 1) && memblock_regions_adjacent(type, i, i+1) &&
-            ((type != &memblock.memory || memblock_memory_can_coalesce(type->regions[i].base,
-                                                             type->regions[i].size,
-                                                             type->regions[i+1].base,
-                                                             type->regions[i+1].size)))) {
-                memblock_coalesce_regions(type, i, i+1);
-                coalesced++;
+        if ((type->cnt == 1) && (type->regions[0].size == 0)) {
+                type->regions[0].base = base;
+                type->regions[0].size = size;
+                return 0;
         }
 
-        if (coalesced)
-                return coalesced;
-
+ new_block:
         /* If we are out of space, we fail. It's too late to resize the array
          * but then this shouldn't have happened in the first place.
          */
@@ -362,13 +380,14 @@ static long __init_memblock memblock_add_region(struct memblock_type *type, phys
                 } else {
                         type->regions[i+1].base = base;
                         type->regions[i+1].size = size;
+                        slot = i + 1;
                         break;
                 }
         }
-
         if (base < type->regions[0].base) {
                 type->regions[0].base = base;
                 type->regions[0].size = size;
+                slot = 0;
         }
         type->cnt++;
 
@@ -376,7 +395,8 @@ static long __init_memblock memblock_add_region(struct memblock_type *type, phys
          * our allocation and return an error
          */
         if (type->cnt == type->max && memblock_double_array(type)) {
-                type->cnt--;
+                BUG_ON(slot < 0);
+                memblock_remove_region(type, slot);
                 return -1;
         }
 
@@ -389,52 +409,55 @@ long __init_memblock memblock_add(phys_addr_t base, phys_addr_t size)
 
 }
 
-static long __init_memblock __memblock_remove(struct memblock_type *type, phys_addr_t base, phys_addr_t size)
+static long __init_memblock __memblock_remove(struct memblock_type *type,
+                                              phys_addr_t base, phys_addr_t size)
 {
-        phys_addr_t rgnbegin, rgnend;
         phys_addr_t end = base + size;
         int i;
 
-        rgnbegin = rgnend = 0; /* supress gcc warnings */
-
-        /* Find the region where (base, size) belongs to */
-        for (i=0; i < type->cnt; i++) {
-                rgnbegin = type->regions[i].base;
-                rgnend = rgnbegin + type->regions[i].size;
+        /* Walk through the array for collisions */
+        for (i = 0; i < type->cnt; i++) {
+                struct memblock_region *rgn = &type->regions[i];
+                phys_addr_t rend = rgn->base + rgn->size;
 
-                if ((rgnbegin <= base) && (end <= rgnend))
+                /* Nothing more to do, exit */
+                if (rgn->base > end || rgn->size == 0)
                         break;
-        }
 
-        /* Didn't find the region */
-        if (i == type->cnt)
-                return -1;
+                /* If we fully enclose the block, drop it */
+                if (base <= rgn->base && end >= rend) {
+                        memblock_remove_region(type, i--);
+                        continue;
+                }
 
-        /* Check to see if we are removing entire region */
-        if ((rgnbegin == base) && (rgnend == end)) {
-                memblock_remove_region(type, i);
-                return 0;
-        }
+                /* If we are fully enclosed within a block
+                 * then we need to split it and we are done
+                 */
+                if (base > rgn->base && end < rend) {
+                        rgn->size = base - rgn->base;
+                        if (!memblock_add_region(type, end, rend - end))
+                                return 0;
+                        /* Failure to split is bad, we at least
+                         * restore the block before erroring
+                         */
+                        rgn->size = rend - rgn->base;
+                        WARN_ON(1);
+                        return -1;
+                }
 
-        /* Check to see if region is matching at the front */
-        if (rgnbegin == base) {
-                type->regions[i].base = end;
-                type->regions[i].size -= size;
-                return 0;
-        }
+                /* Check if we need to trim the bottom of a block */
+                if (rgn->base < end && rend > end) {
+                        rgn->size -= end - rgn->base;
+                        rgn->base = end;
+                        break;
+                }
 
-        /* Check to see if the region is matching at the end */
-        if (rgnend == end) {
-                type->regions[i].size -= size;
-                return 0;
-        }
+                /* And check if we need to trim the top of a block */
+                if (base < rend)
+                        rgn->size -= rend - base;
 
-        /*
-         * We need to split the entry -  adjust the current one to the
-         * beginging of the hole and add the region after hole.
-         */
-        type->regions[i].size = base - type->regions[i].base;
-        return memblock_add_region(type, end, rgnend - end);
+        }
+        return 0;
 }
 
 long __init_memblock memblock_remove(phys_addr_t base, phys_addr_t size)
@@ -467,7 +490,7 @@ phys_addr_t __init __memblock_alloc_base(phys_addr_t size, phys_addr_t align, ph
 
         found = memblock_find_base(size, align, 0, max_addr);
         if (found != MEMBLOCK_ERROR &&
-            memblock_add_region(&memblock.reserved, found, size) >= 0)
+            !memblock_add_region(&memblock.reserved, found, size))
                 return found;
 
         return 0;
@@ -548,7 +571,7 @@ static phys_addr_t __init memblock_alloc_nid_region(struct memblock_region *mp,
                 if (this_nid == nid) {
                         phys_addr_t ret = memblock_find_region(start, this_end, size, align);
                         if (ret != MEMBLOCK_ERROR &&
-                            memblock_add_region(&memblock.reserved, ret, size) >= 0)
+                            !memblock_add_region(&memblock.reserved, ret, size))
                                 return ret;
                 }
                 start = this_end;
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index da53a252b259..e1ee6ad9c971 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -829,6 +829,32 @@ void mem_cgroup_del_lru(struct page *page)
         mem_cgroup_del_lru_list(page, page_lru(page));
 }
 
+/*
+ * Writeback is about to end against a page which has been marked for immediate
+ * reclaim.  If it still appears to be reclaimable, move it to the tail of the
+ * inactive list.
+ */
+void mem_cgroup_rotate_reclaimable_page(struct page *page)
+{
+        struct mem_cgroup_per_zone *mz;
+        struct page_cgroup *pc;
+        enum lru_list lru = page_lru(page);
+
+        if (mem_cgroup_disabled())
+                return;
+
+        pc = lookup_page_cgroup(page);
+        /* unused or root page is not rotated. */
+        if (!PageCgroupUsed(pc))
+                return;
+        /* Ensure pc->mem_cgroup is visible after reading PCG_USED. */
+        smp_rmb();
+        if (mem_cgroup_is_root(pc->mem_cgroup))
+                return;
+        mz = page_cgroup_zoneinfo(pc);
+        list_move_tail(&pc->lru, &mz->lists[lru]);
+}
+
 void mem_cgroup_rotate_lru_list(struct page *page, enum lru_list lru)
 {
         struct mem_cgroup_per_zone *mz;
@@ -2883,7 +2909,7 @@ static inline int mem_cgroup_move_swap_account(swp_entry_t entry,
  * page belongs to.
  */
 int mem_cgroup_prepare_migration(struct page *page,
-        struct page *newpage, struct mem_cgroup **ptr)
+        struct page *newpage, struct mem_cgroup **ptr, gfp_t gfp_mask)
 {
         struct page_cgroup *pc;
         struct mem_cgroup *mem = NULL;
@@ -2940,7 +2966,7 @@ int mem_cgroup_prepare_migration(struct page *page,
                 return 0;
 
         *ptr = mem;
-        ret = __mem_cgroup_try_charge(NULL, GFP_KERNEL, ptr, false, PAGE_SIZE);
+        ret = __mem_cgroup_try_charge(NULL, gfp_mask, ptr, false, PAGE_SIZE);
         css_put(&mem->css);/* drop extra refcnt */
         if (ret || *ptr == NULL) {
                 if (PageAnon(page)) {
@@ -4737,7 +4763,8 @@ static int mem_cgroup_count_precharge_pte_range(pmd_t *pmd,
         pte_t *pte;
         spinlock_t *ptl;
 
-        VM_BUG_ON(pmd_trans_huge(*pmd));
+        split_huge_page_pmd(walk->mm, pmd);
+
         pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
         for (; addr != end; pte++, addr += PAGE_SIZE)
                 if (is_target_pte_for_mc(vma, addr, *pte, NULL))
@@ -4899,8 +4926,8 @@ static int mem_cgroup_move_charge_pte_range(pmd_t *pmd,
         pte_t *pte;
         spinlock_t *ptl;
 
+        split_huge_page_pmd(walk->mm, pmd);
 retry:
-        VM_BUG_ON(pmd_trans_huge(*pmd));
         pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
         for (; addr != end; addr += PAGE_SIZE) {
                 pte_t ptent = *(pte++);
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 99ccb4472623..e0af336530c6 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1130,7 +1130,7 @@ int __memory_failure(unsigned long pfn, int trapno, int flags)
 
         /*
          * Now take care of user space mappings.
-         * Abort on fail: __remove_from_page_cache() assumes unmapped page.
+         * Abort on fail: __delete_from_page_cache() assumes unmapped page.
          */
         if (hwpoison_user_mappings(p, pfn, trapno) != SWAP_SUCCESS) {
                 printk(KERN_ERR "MCE %#lx: cannot unmap page, give up\n", pfn);
diff --git a/mm/memory.c b/mm/memory.c
index e48945ab362b..615be5127ce1 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1569,6 +1569,8 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
                                         fault_flags |= FAULT_FLAG_WRITE;
                                 if (nonblocking)
                                         fault_flags |= FAULT_FLAG_ALLOW_RETRY;
+                                if (foll_flags & FOLL_NOWAIT)
+                                        fault_flags |= (FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_RETRY_NOWAIT);
 
                                 ret = handle_mm_fault(mm, vma, start,
                                                         fault_flags);
@@ -1595,7 +1597,8 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
                                         tsk->min_flt++;
 
                                 if (ret & VM_FAULT_RETRY) {
-                                        *nonblocking = 0;
+                                        if (nonblocking)
+                                                *nonblocking = 0;
                                         return i;
                                 }
 
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 78062ab641ff..959a8b8c7350 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1979,8 +1979,7 @@ int __mpol_equal(struct mempolicy *a, struct mempolicy *b)
         case MPOL_INTERLEAVE:
                 return nodes_equal(a->v.nodes, b->v.nodes);
         case MPOL_PREFERRED:
-                return a->v.preferred_node == b->v.preferred_node &&
-                        a->flags == b->flags;
+                return a->v.preferred_node == b->v.preferred_node;
         default:
                 BUG();
                 return 0;
diff --git a/mm/migrate.c b/mm/migrate.c
index 352de555626c..89e5c3fe8bbc 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -564,7 +564,7 @@ static int fallback_migrate_page(struct address_space *mapping,
  *  == 0 - success
  */
 static int move_to_new_page(struct page *newpage, struct page *page,
-                                                int remap_swapcache)
+                                        int remap_swapcache, bool sync)
 {
         struct address_space *mapping;
         int rc;
@@ -586,18 +586,28 @@ static int move_to_new_page(struct page *newpage, struct page *page,
         mapping = page_mapping(page);
         if (!mapping)
                 rc = migrate_page(mapping, newpage, page);
-        else if (mapping->a_ops->migratepage)
+        else {
                 /*
-                 * Most pages have a mapping and most filesystems
-                 * should provide a migration function. Anonymous
-                 * pages are part of swap space which also has its
-                 * own migration function. This is the most common
-                 * path for page migration.
+                 * Do not writeback pages if !sync and migratepage is
+                 * not pointing to migrate_page() which is nonblocking
+                 * (swapcache/tmpfs uses migratepage = migrate_page).
                  */
-                rc = mapping->a_ops->migratepage(mapping,
-                                                newpage, page);
-        else
-                rc = fallback_migrate_page(mapping, newpage, page);
+                if (PageDirty(page) && !sync &&
+                    mapping->a_ops->migratepage != migrate_page)
+                        rc = -EBUSY;
+                else if (mapping->a_ops->migratepage)
+                        /*
+                         * Most pages have a mapping and most filesystems
+                         * should provide a migration function. Anonymous
+                         * pages are part of swap space which also has its
+                         * own migration function. This is the most common
+                         * path for page migration.
+                         */
+                        rc = mapping->a_ops->migratepage(mapping,
+                                                        newpage, page);
+                else
+                        rc = fallback_migrate_page(mapping, newpage, page);
+        }
 
         if (rc) {
                 newpage->mapping = NULL;
@@ -641,7 +651,7 @@ static int unmap_and_move(new_page_t get_new_page, unsigned long private,
         rc = -EAGAIN;
 
         if (!trylock_page(page)) {
-                if (!force)
+                if (!force || !sync)
                         goto move_newpage;
 
                 /*
@@ -678,7 +688,7 @@ static int unmap_and_move(new_page_t get_new_page, unsigned long private,
         }
 
         /* charge against new page */
-        charge = mem_cgroup_prepare_migration(page, newpage, &mem);
+        charge = mem_cgroup_prepare_migration(page, newpage, &mem, GFP_KERNEL);
         if (charge == -ENOMEM) {
                 rc = -ENOMEM;
                 goto unlock;
@@ -686,7 +696,15 @@ static int unmap_and_move(new_page_t get_new_page, unsigned long private,
         BUG_ON(charge);
 
         if (PageWriteback(page)) {
-                if (!force || !sync)
+                /*
+                 * For !sync, there is no point retrying as the retry loop
+                 * is expected to be too short for PageWriteback to be cleared
+                 */
+                if (!sync) {
+                        rc = -EBUSY;
+                        goto uncharge;
+                }
+                if (!force)
                         goto uncharge;
                 wait_on_page_writeback(page);
         }
@@ -757,14 +775,14 @@ static int unmap_and_move(new_page_t get_new_page, unsigned long private,
 
 skip_unmap:
         if (!page_mapped(page))
-                rc = move_to_new_page(newpage, page, remap_swapcache);
+                rc = move_to_new_page(newpage, page, remap_swapcache, sync);
 
         if (rc && remap_swapcache)
                 remove_migration_ptes(page, page);
 
         /* Drop an anon_vma reference if we took one */
         if (anon_vma)
-                drop_anon_vma(anon_vma);
+                put_anon_vma(anon_vma);
 
 uncharge:
         if (!charge)
@@ -850,13 +868,13 @@ static int unmap_and_move_huge_page(new_page_t get_new_page,
         try_to_unmap(hpage, TTU_MIGRATION|TTU_IGNORE_MLOCK|TTU_IGNORE_ACCESS);
 
         if (!page_mapped(hpage))
-                rc = move_to_new_page(new_hpage, hpage, 1);
+                rc = move_to_new_page(new_hpage, hpage, 1, sync);
 
         if (rc)
                 remove_migration_ptes(hpage, hpage);
 
         if (anon_vma)
-                drop_anon_vma(anon_vma);
+                put_anon_vma(anon_vma);
 out:
         unlock_page(hpage);
 
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 7dcca55ede7c..3100bc57036b 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -31,6 +31,7 @@
 #include <linux/memcontrol.h>
 #include <linux/mempolicy.h>
 #include <linux/security.h>
+#include <linux/ptrace.h>
 
 int sysctl_panic_on_oom;
 int sysctl_oom_kill_allocating_task;
@@ -292,13 +293,15 @@ static struct task_struct *select_bad_process(unsigned int *ppoints,
                 unsigned long totalpages, struct mem_cgroup *mem,
                 const nodemask_t *nodemask)
 {
-        struct task_struct *p;
+        struct task_struct *g, *p;
         struct task_struct *chosen = NULL;
         *ppoints = 0;
 
-        for_each_process(p) {
+        do_each_thread(g, p) {
                 unsigned int points;
 
+                if (!p->mm)
+                        continue;
                 if (oom_unkillable_task(p, mem, nodemask))
                         continue;
 
@@ -314,22 +317,29 @@ static struct task_struct *select_bad_process(unsigned int *ppoints,
                 if (test_tsk_thread_flag(p, TIF_MEMDIE))
                         return ERR_PTR(-1UL);
 
-                /*
-                 * This is in the process of releasing memory so wait for it
-                 * to finish before killing some other task by mistake.
-                 *
-                 * However, if p is the current task, we allow the 'kill' to
-                 * go ahead if it is exiting: this will simply set TIF_MEMDIE,
-                 * which will allow it to gain access to memory reserves in
-                 * the process of exiting and releasing its resources.
-                 * Otherwise we could get an easy OOM deadlock.
-                 */
-                if (thread_group_empty(p) && (p->flags & PF_EXITING) && p->mm) {
-                        if (p != current)
-                                return ERR_PTR(-1UL);
-
-                        chosen = p;
-                        *ppoints = 1000;
+                if (p->flags & PF_EXITING) {
+                        /*
+                         * If p is the current task and is in the process of
+                         * releasing memory, we allow the "kill" to set
+                         * TIF_MEMDIE, which will allow it to gain access to
+                         * memory reserves.  Otherwise, it may stall forever.
+                         *
+                         * The loop isn't broken here, however, in case other
+                         * threads are found to have already been oom killed.
+                         */
+                        if (p == current) {
+                                chosen = p;
+                                *ppoints = 1000;
+                        } else {
+                                /*
+                                 * If this task is not being ptraced on exit,
+                                 * then wait for it to finish before killing
+                                 * some other task unnecessarily.
+                                 */
+                                if (!(task_ptrace(p->group_leader) &
+                                                        PT_TRACE_EXIT))
+                                        return ERR_PTR(-1UL);
+                        }
                 }
 
                 points = oom_badness(p, mem, nodemask, totalpages);
@@ -337,7 +347,7 @@ static struct task_struct *select_bad_process(unsigned int *ppoints,
                         chosen = p;
                         *ppoints = points;
                 }
-        }
+        } while_each_thread(g, p);
 
         return chosen;
 }
@@ -396,7 +406,7 @@ static void dump_header(struct task_struct *p, gfp_t gfp_mask, int order,
         task_unlock(current);
         dump_stack();
         mem_cgroup_print_oom_info(mem, p);
-        show_mem();
+        __show_mem(SHOW_MEM_FILTER_NODES);
         if (sysctl_oom_dump_tasks)
                 dump_tasks(mem, nodemask);
 }
@@ -491,6 +501,8 @@ static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order,
                 list_for_each_entry(child, &t->children, sibling) {
                         unsigned int child_points;
 
+                        if (child->mm == p->mm)
+                                continue;
                         /*
                          * oom_badness() returns 0 if the thread is unkillable
                          */
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 2cb01f6ec5d0..632b46479c94 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -927,7 +927,7 @@ retry:
                                 break;
                         }
 
-                        done_index = page->index + 1;
+                        done_index = page->index;
 
                         lock_page(page);
 
@@ -977,6 +977,7 @@ continue_unlock:
                                          * not be suitable for data integrity
                                          * writeout).
                                          */
+                                        done_index = page->index + 1;
                                         done = 1;
                                         break;
                                 }
@@ -1211,6 +1212,17 @@ int set_page_dirty(struct page *page)
 
         if (likely(mapping)) {
                 int (*spd)(struct page *) = mapping->a_ops->set_page_dirty;
+                /*
+                 * readahead/lru_deactivate_page could remain
+                 * PG_readahead/PG_reclaim due to race with end_page_writeback
+                 * About readahead, if the page is written, the flags would be
+                 * reset. So no problem.
+                 * About lru_deactivate_page, if the page is redirty, the flag
+                 * will be reset. So no problem. but if the page is used by readahead
+                 * it will confuse readahead and make it restart the size rampup
+                 * process. But it's a trivial problem.
+                 */
+                ClearPageReclaim(page);
 #ifdef CONFIG_BLOCK
                 if (!spd)
                         spd = __set_page_dirty_buffers;
@@ -1266,7 +1278,6 @@ int clear_page_dirty_for_io(struct page *page)
 
         BUG_ON(!PageLocked(page));
 
-        ClearPageReclaim(page);
         if (mapping && mapping_cap_account_dirty(mapping)) {
                 /*
                  * Yes, Virginia, this is indeed insane.
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 7945247b1e53..3a58221f4c22 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -614,6 +614,10 @@ static void free_pcppages_bulk(struct zone *zone, int count,
                         list = &pcp->lists[migratetype];
                 } while (list_empty(list));
 
+                /* This is the only non-empty list. Free them all. */
+                if (batch_free == MIGRATE_PCPTYPES)
+                        batch_free = to_free;
+
                 do {
                         page = list_entry(list->prev, struct page, lru);
                         /* must delete as __free_one_page list manipulates */
@@ -863,9 +867,8 @@ static int move_freepages(struct zone *zone,
                 }
 
                 order = page_order(page);
-                list_del(&page->lru);
-                list_add(&page->lru,
-                        &zone->free_area[order].free_list[migratetype]);
+                list_move(&page->lru,
+                          &zone->free_area[order].free_list[migratetype]);
                 page += 1 << order;
                 pages_moved += 1 << order;
         }
@@ -1333,7 +1336,7 @@ again:
         }
 
         __count_zone_vm_events(PGALLOC, zone, 1 << order);
-        zone_statistics(preferred_zone, zone);
+        zone_statistics(preferred_zone, zone, gfp_flags);
         local_irq_restore(flags);
 
         VM_BUG_ON(bad_range(zone, page));
@@ -1714,6 +1717,20 @@ try_next_zone:
         return page;
 }
 
+/*
+ * Large machines with many possible nodes should not always dump per-node
+ * meminfo in irq context.
+ */
+static inline bool should_suppress_show_mem(void)
+{
+        bool ret = false;
+
+#if NODES_SHIFT > 8
+        ret = in_interrupt();
+#endif
+        return ret;
+}
+
 static inline int
 should_alloc_retry(gfp_t gfp_mask, unsigned int order,
                                 unsigned long pages_reclaimed)
@@ -2085,7 +2102,7 @@ rebalance:
                                         sync_migration);
         if (page)
                 goto got_pg;
-        sync_migration = true;
+        sync_migration = !(gfp_mask & __GFP_NO_KSWAPD);
 
         /* Try direct reclaim and then allocating */
         page = __alloc_pages_direct_reclaim(gfp_mask, order,
@@ -2157,11 +2174,25 @@ rebalance:
 
 nopage:
         if (!(gfp_mask & __GFP_NOWARN) && printk_ratelimit()) {
-                printk(KERN_WARNING "%s: page allocation failure."
-                        " order:%d, mode:0x%x\n",
+                unsigned int filter = SHOW_MEM_FILTER_NODES;
+
+                /*
+                 * This documents exceptions given to allocations in certain
+                 * contexts that are allowed to allocate outside current's set
+                 * of allowed nodes.
+                 */
+                if (!(gfp_mask & __GFP_NOMEMALLOC))
+                        if (test_thread_flag(TIF_MEMDIE) ||
+                            (current->flags & (PF_MEMALLOC | PF_EXITING)))
+                                filter &= ~SHOW_MEM_FILTER_NODES;
+                if (in_interrupt() || !wait)
+                        filter &= ~SHOW_MEM_FILTER_NODES;
+
+                pr_warning("%s: page allocation failure. order:%d, mode:0x%x\n",
                         current->comm, order, gfp_mask);
                 dump_stack();
-                show_mem();
+                if (!should_suppress_show_mem())
+                        __show_mem(filter);
         }
         return page;
 got_pg:
@@ -2411,19 +2442,42 @@ void si_meminfo_node(struct sysinfo *val, int nid)
 }
 #endif
 
+/*
+ * Determine whether the zone's node should be displayed or not, depending on
+ * whether SHOW_MEM_FILTER_NODES was passed to __show_free_areas().
+ */
+static bool skip_free_areas_zone(unsigned int flags, const struct zone *zone)
+{
+        bool ret = false;
+
+        if (!(flags & SHOW_MEM_FILTER_NODES))
+                goto out;
+
+        get_mems_allowed();
+        ret = !node_isset(zone->zone_pgdat->node_id,
+                                cpuset_current_mems_allowed);
+        put_mems_allowed();
+out:
+        return ret;
+}
+
 #define K(x) ((x) << (PAGE_SHIFT-10))
 
 /*
  * Show free area list (used inside shift_scroll-lock stuff)
  * We also calculate the percentage fragmentation. We do this by counting the
  * memory on each free list with the exception of the first item on the list.
+ * Suppresses nodes that are not allowed by current's cpuset if
+ * SHOW_MEM_FILTER_NODES is passed.
  */
-void show_free_areas(void)
+void __show_free_areas(unsigned int filter)
 {
         int cpu;
         struct zone *zone;
 
         for_each_populated_zone(zone) {
+                if (skip_free_areas_zone(filter, zone))
+                        continue;
                 show_node(zone);
                 printk("%s per-cpu:\n", zone->name);
 
@@ -2465,6 +2519,8 @@ void show_free_areas(void)
         for_each_populated_zone(zone) {
                 int i;
 
+                if (skip_free_areas_zone(filter, zone))
+                        continue;
                 show_node(zone);
                 printk("%s"
                         " free:%lukB"
@@ -2532,6 +2588,8 @@ void show_free_areas(void)
         for_each_populated_zone(zone) {
                 unsigned long nr[MAX_ORDER], flags, order, total = 0;
 
+                if (skip_free_areas_zone(filter, zone))
+                        continue;
                 show_node(zone);
                 printk("%s: ", zone->name);
 
@@ -2551,6 +2609,11 @@ void show_free_areas(void)
         show_swap_cache_info();
 }
 
+void show_free_areas(void)
+{
+        __show_free_areas(0);
+}
+
 static void zoneref_set_zone(struct zone *zone, struct zoneref *zoneref)
 {
         zoneref->zone = zone;
diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c
index 5bffada7cde1..59a3cd4c799d 100644
--- a/mm/page_cgroup.c
+++ b/mm/page_cgroup.c
@@ -243,12 +243,7 @@ static int __meminit page_cgroup_callback(struct notifier_block *self,
                 break;
         }
 
-        if (ret)
-                ret = notifier_from_errno(ret);
-        else
-                ret = NOTIFY_OK;
-
-        return ret;
+        return notifier_from_errno(ret);
 }
 
 #endif
diff --git a/mm/pagewalk.c b/mm/pagewalk.c
index 7cfa6ae02303..c3450d533611 100644
--- a/mm/pagewalk.c
+++ b/mm/pagewalk.c
@@ -33,19 +33,35 @@ static int walk_pmd_range(pud_t *pud, unsigned long addr, unsigned long end,
 
         pmd = pmd_offset(pud, addr);
         do {
+again:
                 next = pmd_addr_end(addr, end);
-                split_huge_page_pmd(walk->mm, pmd);
-                if (pmd_none_or_clear_bad(pmd)) {
+                if (pmd_none(*pmd)) {
                         if (walk->pte_hole)
                                 err = walk->pte_hole(addr, next, walk);
                         if (err)
                                 break;
                         continue;
                 }
+                /*
+                 * This implies that each ->pmd_entry() handler
+                 * needs to know about pmd_trans_huge() pmds
+                 */
                 if (walk->pmd_entry)
                         err = walk->pmd_entry(pmd, addr, next, walk);
-                if (!err && walk->pte_entry)
-                        err = walk_pte_range(pmd, addr, next, walk);
+                if (err)
+                        break;
+
+                /*
+                 * Check this here so we only break down trans_huge
+                 * pages when we _need_ to
+                 */
+                if (!walk->pte_entry)
+                        continue;
+
+                split_huge_page_pmd(walk->mm, pmd);
+                if (pmd_none_or_clear_bad(pmd))
+                        goto again;
+                err = walk_pte_range(pmd, addr, next, walk);
                 if (err)
                         break;
         } while (pmd++, addr = next, addr != end);
diff --git a/mm/rmap.c b/mm/rmap.c
index 941bf82e8961..4a8e99a0fb97 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -67,11 +67,24 @@ static struct kmem_cache *anon_vma_chain_cachep;
 
 static inline struct anon_vma *anon_vma_alloc(void)
 {
-        return kmem_cache_alloc(anon_vma_cachep, GFP_KERNEL);
+        struct anon_vma *anon_vma;
+
+        anon_vma = kmem_cache_alloc(anon_vma_cachep, GFP_KERNEL);
+        if (anon_vma) {
+                atomic_set(&anon_vma->refcount, 1);
+                /*
+                 * Initialise the anon_vma root to point to itself. If called
+                 * from fork, the root will be reset to the parents anon_vma.
+                 */
+                anon_vma->root = anon_vma;
+        }
+
+        return anon_vma;
 }
 
-void anon_vma_free(struct anon_vma *anon_vma)
+static inline void anon_vma_free(struct anon_vma *anon_vma)
 {
+        VM_BUG_ON(atomic_read(&anon_vma->refcount));
         kmem_cache_free(anon_vma_cachep, anon_vma);
 }
 
@@ -133,11 +146,6 @@ int anon_vma_prepare(struct vm_area_struct *vma)
                         if (unlikely(!anon_vma))
                                 goto out_enomem_free_avc;
                         allocated = anon_vma;
-                        /*
-                         * This VMA had no anon_vma yet.  This anon_vma is
-                         * the root of any anon_vma tree that might form.
-                         */
-                        anon_vma->root = anon_vma;
                 }
 
                 anon_vma_lock(anon_vma);
@@ -156,7 +164,7 @@ int anon_vma_prepare(struct vm_area_struct *vma)
                 anon_vma_unlock(anon_vma);
 
                 if (unlikely(allocated))
-                        anon_vma_free(allocated);
+                        put_anon_vma(allocated);
                 if (unlikely(avc))
                         anon_vma_chain_free(avc);
         }
@@ -241,9 +249,9 @@ int anon_vma_fork(struct vm_area_struct *vma, struct vm_area_struct *pvma)
          */
         anon_vma->root = pvma->anon_vma->root;
         /*
-         * With KSM refcounts, an anon_vma can stay around longer than the
-         * process it belongs to.  The root anon_vma needs to be pinned
-         * until this anon_vma is freed, because the lock lives in the root.
+         * With refcounts, an anon_vma can stay around longer than the
+         * process it belongs to. The root anon_vma needs to be pinned until
+         * this anon_vma is freed, because the lock lives in the root.
          */
         get_anon_vma(anon_vma->root);
         /* Mark this anon_vma as the one where our new (COWed) pages go. */
@@ -253,7 +261,7 @@ int anon_vma_fork(struct vm_area_struct *vma, struct vm_area_struct *pvma)
         return 0;
 
  out_error_free_anon_vma:
-        anon_vma_free(anon_vma);
+        put_anon_vma(anon_vma);
  out_error:
         unlink_anon_vmas(vma);
         return -ENOMEM;
@@ -272,15 +280,11 @@ static void anon_vma_unlink(struct anon_vma_chain *anon_vma_chain)
         list_del(&anon_vma_chain->same_anon_vma);
 
         /* We must garbage collect the anon_vma if it's empty */
-        empty = list_empty(&anon_vma->head) && !anonvma_external_refcount(anon_vma);
+        empty = list_empty(&anon_vma->head);
         anon_vma_unlock(anon_vma);
 
-        if (empty) {
-                /* We no longer need the root anon_vma */
-                if (anon_vma->root != anon_vma)
-                        drop_anon_vma(anon_vma->root);
-                anon_vma_free(anon_vma);
-        }
+        if (empty)
+                put_anon_vma(anon_vma);
 }
 
 void unlink_anon_vmas(struct vm_area_struct *vma)
@@ -303,7 +307,7 @@ static void anon_vma_ctor(void *data)
         struct anon_vma *anon_vma = data;
 
         spin_lock_init(&anon_vma->lock);
-        anonvma_external_refcount_init(anon_vma);
+        atomic_set(&anon_vma->refcount, 0);
         INIT_LIST_HEAD(&anon_vma->head);
 }
 
@@ -1486,41 +1490,15 @@ int try_to_munlock(struct page *page)
                 return try_to_unmap_file(page, TTU_MUNLOCK);
 }
 
-#if defined(CONFIG_KSM) || defined(CONFIG_MIGRATION)
-/*
- * Drop an anon_vma refcount, freeing the anon_vma and anon_vma->root
- * if necessary.  Be careful to do all the tests under the lock.  Once
- * we know we are the last user, nobody else can get a reference and we
- * can do the freeing without the lock.
- */
-void drop_anon_vma(struct anon_vma *anon_vma)
+void __put_anon_vma(struct anon_vma *anon_vma)
 {
-        BUG_ON(atomic_read(&anon_vma->external_refcount) <= 0);
-        if (atomic_dec_and_lock(&anon_vma->external_refcount, &anon_vma->root->lock)) {
-                struct anon_vma *root = anon_vma->root;
-                int empty = list_empty(&anon_vma->head);
-                int last_root_user = 0;
-                int root_empty = 0;
+        struct anon_vma *root = anon_vma->root;
 
-                /*
-                 * The refcount on a non-root anon_vma got dropped.  Drop
-                 * the refcount on the root and check if we need to free it.
-                 */
-                if (empty && anon_vma != root) {
-                        BUG_ON(atomic_read(&root->external_refcount) <= 0);
-                        last_root_user = atomic_dec_and_test(&root->external_refcount);
-                        root_empty = list_empty(&root->head);
-                }
-                anon_vma_unlock(anon_vma);
+        if (root != anon_vma && atomic_dec_and_test(&root->refcount))
+                anon_vma_free(root);
 
-                if (empty) {
-                        anon_vma_free(anon_vma);
-                        if (root_empty && last_root_user)
-                                anon_vma_free(root);
-                }
-        }
+        anon_vma_free(anon_vma);
 }
-#endif
 
 #ifdef CONFIG_MIGRATION
 /*
diff --git a/mm/shmem.c b/mm/shmem.c
index 048a95a5244d..91ce9a1024d7 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1081,7 +1081,7 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc)
         shmem_recalc_inode(inode);
 
         if (swap.val && add_to_swap_cache(page, swap, GFP_ATOMIC) == 0) {
-                remove_from_page_cache(page);
+                delete_from_page_cache(page);
                 shmem_swp_set(info, entry, swap.val);
                 shmem_swp_unmap(entry);
                 if (list_empty(&info->swaplist))
@@ -1091,7 +1091,6 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc)
                 spin_unlock(&info->lock);
                 swap_shmem_alloc(swap);
                 BUG_ON(page_mapped(page));
-                page_cache_release(page);       /* pagecache ref */
                 swap_writepage(page, wbc);
                 if (inode) {
                         mutex_lock(&shmem_swaplist_mutex);
@@ -2794,5 +2793,6 @@ int shmem_zero_setup(struct vm_area_struct *vma)
                 fput(vma->vm_file);
         vma->vm_file = file;
         vma->vm_ops = &shmem_vm_ops;
+        vma->vm_flags |= VM_CAN_NONLINEAR;
         return 0;
 }
diff --git a/mm/slab.c b/mm/slab.c
index 37961d1f584f..568803f121a8 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -191,22 +191,6 @@ typedef unsigned int kmem_bufctl_t;
 #define SLAB_LIMIT      (((kmem_bufctl_t)(~0U))-3)
 
 /*
- * struct slab
- *
- * Manages the objs in a slab. Placed either at the beginning of mem allocated
- * for a slab, or allocated from an general cache.
- * Slabs are chained into three list: fully used, partial, fully free slabs.
- */
-struct slab {
-        struct list_head list;
-        unsigned long colouroff;
-        void *s_mem;            /* including colour offset */
-        unsigned int inuse;     /* num of objs active in slab */
-        kmem_bufctl_t free;
-        unsigned short nodeid;
-};
-
-/*
  * struct slab_rcu
  *
  * slab_destroy on a SLAB_DESTROY_BY_RCU cache uses this structure to
@@ -219,8 +203,6 @@ struct slab {
  *
  * rcu_read_lock before reading the address, then rcu_read_unlock after
  * taking the spinlock within the structure expected at that address.
- *
- * We assume struct slab_rcu can overlay struct slab when destroying.
  */
 struct slab_rcu {
         struct rcu_head head;
@@ -229,6 +211,27 @@ struct slab_rcu {
 };
 
 /*
+ * struct slab
+ *
+ * Manages the objs in a slab. Placed either at the beginning of mem allocated
+ * for a slab, or allocated from an general cache.
+ * Slabs are chained into three list: fully used, partial, fully free slabs.
+ */
+struct slab {
+        union {
+                struct {
+                        struct list_head list;
+                        unsigned long colouroff;
+                        void *s_mem;            /* including colour offset */
+                        unsigned int inuse;     /* num of objs active in slab */
+                        kmem_bufctl_t free;
+                        unsigned short nodeid;
+                };
+                struct slab_rcu __slab_cover_slab_rcu;
+        };
+};
+
+/*
  * struct array_cache
  *
  * Purpose:
@@ -1387,7 +1390,7 @@ static int __meminit slab_memory_callback(struct notifier_block *self,
                 break;
         }
 out:
-        return ret ? notifier_from_errno(ret) : NOTIFY_OK;
+        return notifier_from_errno(ret);
 }
 #endif /* CONFIG_NUMA && CONFIG_MEMORY_HOTPLUG */
 
@@ -2147,8 +2150,6 @@ static int __init_refok setup_cpu_cache(struct kmem_cache *cachep, gfp_t gfp)
  *
  * @name must be valid until the cache is destroyed. This implies that
  * the module calling this has to destroy the cache before getting unloaded.
- * Note that kmem_cache_name() is not guaranteed to return the same pointer,
- * therefore applications must manage it themselves.
  *
  * The flags are
  *
@@ -2288,8 +2289,8 @@ kmem_cache_create (const char *name, size_t size, size_t align,
         if (ralign < align) {
                 ralign = align;
         }
-        /* disable debug if not aligning with REDZONE_ALIGN */
-        if (ralign & (__alignof__(unsigned long long) - 1))
+        /* disable debug if necessary */
+        if (ralign > __alignof__(unsigned long long))
                 flags &= ~(SLAB_RED_ZONE | SLAB_STORE_USER);
         /*
          * 4) Store it.
@@ -2315,8 +2316,8 @@ kmem_cache_create (const char *name, size_t size, size_t align,
          */
         if (flags & SLAB_RED_ZONE) {
                 /* add space for red zone words */
-                cachep->obj_offset += align;
-                size += align + sizeof(unsigned long long);
+                cachep->obj_offset += sizeof(unsigned long long);
+                size += 2 * sizeof(unsigned long long);
         }
         if (flags & SLAB_STORE_USER) {
                 /* user store requires one word storage behind the end of
@@ -3840,12 +3841,6 @@ unsigned int kmem_cache_size(struct kmem_cache *cachep)
 }
 EXPORT_SYMBOL(kmem_cache_size);
 
-const char *kmem_cache_name(struct kmem_cache *cachep)
-{
-        return cachep->name;
-}
-EXPORT_SYMBOL_GPL(kmem_cache_name);
-
 /*
  * This initializes kmem_list3 or resizes various caches for all nodes.
  */
diff --git a/mm/slob.c b/mm/slob.c
index 3588eaaef726..46e0aee33a23 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -666,12 +666,6 @@ unsigned int kmem_cache_size(struct kmem_cache *c)
 }
 EXPORT_SYMBOL(kmem_cache_size);
 
-const char *kmem_cache_name(struct kmem_cache *c)
-{
-        return c->name;
-}
-EXPORT_SYMBOL(kmem_cache_name);
-
 int kmem_cache_shrink(struct kmem_cache *d)
 {
         return 0;
diff --git a/mm/slub.c b/mm/slub.c
index e15aa7f193c9..93de30db95f5 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -217,7 +217,7 @@ static inline void sysfs_slab_remove(struct kmem_cache *s)
 
 #endif
 
-static inline void stat(struct kmem_cache *s, enum stat_item si)
+static inline void stat(const struct kmem_cache *s, enum stat_item si)
 {
 #ifdef CONFIG_SLUB_STATS
         __this_cpu_inc(s->cpu_slab->stat[si]);
@@ -281,11 +281,40 @@ static inline int slab_index(void *p, struct kmem_cache *s, void *addr)
         return (p - addr) / s->size;
 }
 
+static inline size_t slab_ksize(const struct kmem_cache *s)
+{
+#ifdef CONFIG_SLUB_DEBUG
+        /*
+         * Debugging requires use of the padding between object
+         * and whatever may come after it.
+         */
+        if (s->flags & (SLAB_RED_ZONE | SLAB_POISON))
+                return s->objsize;
+
+#endif
+        /*
+         * If we have the need to store the freelist pointer
+         * back there or track user information then we can
+         * only use the space before that information.
+         */
+        if (s->flags & (SLAB_DESTROY_BY_RCU | SLAB_STORE_USER))
+                return s->inuse;
+        /*
+         * Else we can use all the padding etc for the allocation
+         */
+        return s->size;
+}
+
+static inline int order_objects(int order, unsigned long size, int reserved)
+{
+        return ((PAGE_SIZE << order) - reserved) / size;
+}
+
 static inline struct kmem_cache_order_objects oo_make(int order,
-                                                unsigned long size)
+                unsigned long size, int reserved)
 {
         struct kmem_cache_order_objects x = {
-                (order << OO_SHIFT) + (PAGE_SIZE << order) / size
+                (order << OO_SHIFT) + order_objects(order, size, reserved)
         };
 
         return x;
@@ -617,7 +646,7 @@ static int slab_pad_check(struct kmem_cache *s, struct page *page)
                 return 1;
 
         start = page_address(page);
-        length = (PAGE_SIZE << compound_order(page));
+        length = (PAGE_SIZE << compound_order(page)) - s->reserved;
         end = start + length;
         remainder = length % s->size;
         if (!remainder)
@@ -698,7 +727,7 @@ static int check_slab(struct kmem_cache *s, struct page *page)
                 return 0;
         }
 
-        maxobj = (PAGE_SIZE << compound_order(page)) / s->size;
+        maxobj = order_objects(compound_order(page), s->size, s->reserved);
         if (page->objects > maxobj) {
                 slab_err(s, page, "objects %u > max %u",
                         s->name, page->objects, maxobj);
@@ -748,7 +777,7 @@ static int on_freelist(struct kmem_cache *s, struct page *page, void *search)
                 nr++;
         }
 
-        max_objects = (PAGE_SIZE << compound_order(page)) / s->size;
+        max_objects = order_objects(compound_order(page), s->size, s->reserved);
         if (max_objects > MAX_OBJS_PER_PAGE)
                 max_objects = MAX_OBJS_PER_PAGE;
 
@@ -800,21 +829,31 @@ static inline int slab_pre_alloc_hook(struct kmem_cache *s, gfp_t flags)
 static inline void slab_post_alloc_hook(struct kmem_cache *s, gfp_t flags, void *object)
 {
         flags &= gfp_allowed_mask;
-        kmemcheck_slab_alloc(s, flags, object, s->objsize);
+        kmemcheck_slab_alloc(s, flags, object, slab_ksize(s));
         kmemleak_alloc_recursive(object, s->objsize, 1, s->flags, flags);
 }
 
 static inline void slab_free_hook(struct kmem_cache *s, void *x)
 {
         kmemleak_free_recursive(x, s->flags);
-}
 
-static inline void slab_free_hook_irq(struct kmem_cache *s, void *object)
-{
-        kmemcheck_slab_free(s, object, s->objsize);
-        debug_check_no_locks_freed(object, s->objsize);
-        if (!(s->flags & SLAB_DEBUG_OBJECTS))
-                debug_check_no_obj_freed(object, s->objsize);
+        /*
+         * Trouble is that we may no longer disable interupts in the fast path
+         * So in order to make the debug calls that expect irqs to be
+         * disabled we need to disable interrupts temporarily.
+         */
+#if defined(CONFIG_KMEMCHECK) || defined(CONFIG_LOCKDEP)
+        {
+                unsigned long flags;
+
+                local_irq_save(flags);
+                kmemcheck_slab_free(s, x, s->objsize);
+                debug_check_no_locks_freed(x, s->objsize);
+                if (!(s->flags & SLAB_DEBUG_OBJECTS))
+                        debug_check_no_obj_freed(x, s->objsize);
+                local_irq_restore(flags);
+        }
+#endif
 }
 
 /*
@@ -1101,9 +1140,6 @@ static inline void slab_post_alloc_hook(struct kmem_cache *s, gfp_t flags,
 
 static inline void slab_free_hook(struct kmem_cache *s, void *x) {}
 
-static inline void slab_free_hook_irq(struct kmem_cache *s,
-                void *object) {}
-
 #endif /* CONFIG_SLUB_DEBUG */
 
 /*
@@ -1249,21 +1285,38 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
         __free_pages(page, order);
 }
 
+#define need_reserve_slab_rcu                                           \
+        (sizeof(((struct page *)NULL)->lru) < sizeof(struct rcu_head))
+
 static void rcu_free_slab(struct rcu_head *h)
 {
         struct page *page;
 
-        page = container_of((struct list_head *)h, struct page, lru);
+        if (need_reserve_slab_rcu)
+                page = virt_to_head_page(h);
+        else
+                page = container_of((struct list_head *)h, struct page, lru);
+
         __free_slab(page->slab, page);
 }
 
 static void free_slab(struct kmem_cache *s, struct page *page)
 {
         if (unlikely(s->flags & SLAB_DESTROY_BY_RCU)) {
-                /*
-                 * RCU free overloads the RCU head over the LRU
-                 */
-                struct rcu_head *head = (void *)&page->lru;
+                struct rcu_head *head;
+
+                if (need_reserve_slab_rcu) {
+                        int order = compound_order(page);
+                        int offset = (PAGE_SIZE << order) - s->reserved;
+
+                        VM_BUG_ON(s->reserved != sizeof(*head));
+                        head = page_address(page) + offset;
+                } else {
+                        /*
+                         * RCU free overloads the RCU head over the LRU
+                         */
+                        head = (void *)&page->lru;
+                }
 
                 call_rcu(head, rcu_free_slab);
         } else
@@ -1487,6 +1540,78 @@ static void unfreeze_slab(struct kmem_cache *s, struct page *page, int tail)
         }
 }
 
+#ifdef CONFIG_CMPXCHG_LOCAL
+#ifdef CONFIG_PREEMPT
+/*
+ * Calculate the next globally unique transaction for disambiguiation
+ * during cmpxchg. The transactions start with the cpu number and are then
+ * incremented by CONFIG_NR_CPUS.
+ */
+#define TID_STEP  roundup_pow_of_two(CONFIG_NR_CPUS)
+#else
+/*
+ * No preemption supported therefore also no need to check for
+ * different cpus.
+ */
+#define TID_STEP 1
+#endif
+
+static inline unsigned long next_tid(unsigned long tid)
+{
+        return tid + TID_STEP;
+}
+
+static inline unsigned int tid_to_cpu(unsigned long tid)
+{
+        return tid % TID_STEP;
+}
+
+static inline unsigned long tid_to_event(unsigned long tid)
+{
+        return tid / TID_STEP;
+}
+
+static inline unsigned int init_tid(int cpu)
+{
+        return cpu;
+}
+
+static inline void note_cmpxchg_failure(const char *n,
+                const struct kmem_cache *s, unsigned long tid)
+{
+#ifdef SLUB_DEBUG_CMPXCHG
+        unsigned long actual_tid = __this_cpu_read(s->cpu_slab->tid);
+
+        printk(KERN_INFO "%s %s: cmpxchg redo ", n, s->name);
+
+#ifdef CONFIG_PREEMPT
+        if (tid_to_cpu(tid) != tid_to_cpu(actual_tid))
+                printk("due to cpu change %d -> %d\n",
+                        tid_to_cpu(tid), tid_to_cpu(actual_tid));
+        else
+#endif
+        if (tid_to_event(tid) != tid_to_event(actual_tid))
+                printk("due to cpu running other code. Event %ld->%ld\n",
+                        tid_to_event(tid), tid_to_event(actual_tid));
+        else
+                printk("for unknown reason: actual=%lx was=%lx target=%lx\n",
+                        actual_tid, tid, next_tid(tid));
+#endif
+        stat(s, CMPXCHG_DOUBLE_CPU_FAIL);
+}
+
+#endif
+
+void init_kmem_cache_cpus(struct kmem_cache *s)
+{
+#if defined(CONFIG_CMPXCHG_LOCAL) && defined(CONFIG_PREEMPT)
+        int cpu;
+
+        for_each_possible_cpu(cpu)
+                per_cpu_ptr(s->cpu_slab, cpu)->tid = init_tid(cpu);
+#endif
+
+}
 /*
  * Remove the cpu slab
  */
@@ -1518,6 +1643,9 @@ static void deactivate_slab(struct kmem_cache *s, struct kmem_cache_cpu *c)
                 page->inuse--;
         }
         c->page = NULL;
+#ifdef CONFIG_CMPXCHG_LOCAL
+        c->tid = next_tid(c->tid);
+#endif
         unfreeze_slab(s, page, tail);
 }
 
@@ -1652,6 +1780,19 @@ static void *__slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node,
 {
         void **object;
         struct page *new;
+#ifdef CONFIG_CMPXCHG_LOCAL
+        unsigned long flags;
+
+        local_irq_save(flags);
+#ifdef CONFIG_PREEMPT
+        /*
+         * We may have been preempted and rescheduled on a different
+         * cpu before disabling interrupts. Need to reload cpu area
+         * pointer.
+         */
+        c = this_cpu_ptr(s->cpu_slab);
+#endif
+#endif
 
         /* We handle __GFP_ZERO in the caller */
         gfpflags &= ~__GFP_ZERO;
@@ -1678,6 +1819,10 @@ load_freelist:
         c->node = page_to_nid(c->page);
 unlock_out:
         slab_unlock(c->page);
+#ifdef CONFIG_CMPXCHG_LOCAL
+        c->tid = next_tid(c->tid);
+        local_irq_restore(flags);
+#endif
         stat(s, ALLOC_SLOWPATH);
         return object;
 
@@ -1713,6 +1858,9 @@ new_slab:
         }
         if (!(gfpflags & __GFP_NOWARN) && printk_ratelimit())
                 slab_out_of_memory(s, gfpflags, node);
+#ifdef CONFIG_CMPXCHG_LOCAL
+        local_irq_restore(flags);
+#endif
         return NULL;
 debug:
         if (!alloc_debug_processing(s, c->page, object, addr))
@@ -1739,23 +1887,76 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,
 {
         void **object;
         struct kmem_cache_cpu *c;
+#ifdef CONFIG_CMPXCHG_LOCAL
+        unsigned long tid;
+#else
         unsigned long flags;
+#endif
 
         if (slab_pre_alloc_hook(s, gfpflags))
                 return NULL;
 
+#ifndef CONFIG_CMPXCHG_LOCAL
         local_irq_save(flags);
+#else
+redo:
+#endif
+
+        /*
+         * Must read kmem_cache cpu data via this cpu ptr. Preemption is
+         * enabled. We may switch back and forth between cpus while
+         * reading from one cpu area. That does not matter as long
+         * as we end up on the original cpu again when doing the cmpxchg.
+         */
         c = __this_cpu_ptr(s->cpu_slab);
+
+#ifdef CONFIG_CMPXCHG_LOCAL
+        /*
+         * The transaction ids are globally unique per cpu and per operation on
+         * a per cpu queue. Thus they can be guarantee that the cmpxchg_double
+         * occurs on the right processor and that there was no operation on the
+         * linked list in between.
+         */
+        tid = c->tid;
+        barrier();
+#endif
+
         object = c->freelist;
         if (unlikely(!object || !node_match(c, node)))
 
                 object = __slab_alloc(s, gfpflags, node, addr, c);
 
         else {
+#ifdef CONFIG_CMPXCHG_LOCAL
+                /*
+                 * The cmpxchg will only match if there was no additonal
+                 * operation and if we are on the right processor.
+                 *
+                 * The cmpxchg does the following atomically (without lock semantics!)
+                 * 1. Relocate first pointer to the current per cpu area.
+                 * 2. Verify that tid and freelist have not been changed
+                 * 3. If they were not changed replace tid and freelist
+                 *
+                 * Since this is without lock semantics the protection is only against
+                 * code executing on this cpu *not* from access by other cpus.
+                 */
+                if (unlikely(!this_cpu_cmpxchg_double(
+                                s->cpu_slab->freelist, s->cpu_slab->tid,
+                                object, tid,
+                                get_freepointer(s, object), next_tid(tid)))) {
+
+                        note_cmpxchg_failure("slab_alloc", s, tid);
+                        goto redo;
+                }
+#else
                 c->freelist = get_freepointer(s, object);
+#endif
                 stat(s, ALLOC_FASTPATH);
         }
+
+#ifndef CONFIG_CMPXCHG_LOCAL
         local_irq_restore(flags);
+#endif
 
         if (unlikely(gfpflags & __GFP_ZERO) && object)
                 memset(object, 0, s->objsize);
@@ -1833,9 +2034,13 @@ static void __slab_free(struct kmem_cache *s, struct page *page,
 {
         void *prior;
         void **object = (void *)x;
+#ifdef CONFIG_CMPXCHG_LOCAL
+        unsigned long flags;
 
-        stat(s, FREE_SLOWPATH);
+        local_irq_save(flags);
+#endif
         slab_lock(page);
+        stat(s, FREE_SLOWPATH);
 
         if (kmem_cache_debug(s))
                 goto debug;
@@ -1865,6 +2070,9 @@ checks_ok:
 
 out_unlock:
         slab_unlock(page);
+#ifdef CONFIG_CMPXCHG_LOCAL
+        local_irq_restore(flags);
+#endif
         return;
 
 slab_empty:
@@ -1876,6 +2084,9 @@ slab_empty:
                 stat(s, FREE_REMOVE_PARTIAL);
         }
         slab_unlock(page);
+#ifdef CONFIG_CMPXCHG_LOCAL
+        local_irq_restore(flags);
+#endif
         stat(s, FREE_SLAB);
         discard_slab(s, page);
         return;
@@ -1902,23 +2113,56 @@ static __always_inline void slab_free(struct kmem_cache *s,
 {
         void **object = (void *)x;
         struct kmem_cache_cpu *c;
+#ifdef CONFIG_CMPXCHG_LOCAL
+        unsigned long tid;
+#else
         unsigned long flags;
+#endif
 
         slab_free_hook(s, x);
 
+#ifndef CONFIG_CMPXCHG_LOCAL
         local_irq_save(flags);
+
+#else
+redo:
+#endif
+
+        /*
+         * Determine the currently cpus per cpu slab.
+         * The cpu may change afterward. However that does not matter since
+         * data is retrieved via this pointer. If we are on the same cpu
+         * during the cmpxchg then the free will succedd.
+         */
         c = __this_cpu_ptr(s->cpu_slab);
 
-        slab_free_hook_irq(s, x);
+#ifdef CONFIG_CMPXCHG_LOCAL
+        tid = c->tid;
+        barrier();
+#endif
 
         if (likely(page == c->page && c->node != NUMA_NO_NODE)) {
                 set_freepointer(s, object, c->freelist);
+
+#ifdef CONFIG_CMPXCHG_LOCAL
+                if (unlikely(!this_cpu_cmpxchg_double(
+                                s->cpu_slab->freelist, s->cpu_slab->tid,
+                                c->freelist, tid,
+                                object, next_tid(tid)))) {
+
+                        note_cmpxchg_failure("slab_free", s, tid);
+                        goto redo;
+                }
+#else
                 c->freelist = object;
+#endif
                 stat(s, FREE_FASTPATH);
         } else
                 __slab_free(s, page, x, addr);
 
+#ifndef CONFIG_CMPXCHG_LOCAL
         local_irq_restore(flags);
+#endif
 }
 
 void kmem_cache_free(struct kmem_cache *s, void *x)
@@ -1988,13 +2232,13 @@ static int slub_nomerge;
  * the smallest order which will fit the object.
  */
 static inline int slab_order(int size, int min_objects,
-                                int max_order, int fract_leftover)
+                                int max_order, int fract_leftover, int reserved)
 {
         int order;
         int rem;
         int min_order = slub_min_order;
 
-        if ((PAGE_SIZE << min_order) / size > MAX_OBJS_PER_PAGE)
+        if (order_objects(min_order, size, reserved) > MAX_OBJS_PER_PAGE)
                 return get_order(size * MAX_OBJS_PER_PAGE) - 1;
 
         for (order = max(min_order,
@@ -2003,10 +2247,10 @@ static inline int slab_order(int size, int min_objects,
 
                 unsigned long slab_size = PAGE_SIZE << order;
 
-                if (slab_size < min_objects * size)
+                if (slab_size < min_objects * size + reserved)
                         continue;
 
-                rem = slab_size % size;
+                rem = (slab_size - reserved) % size;
 
                 if (rem <= slab_size / fract_leftover)
                         break;
@@ -2016,7 +2260,7 @@ static inline int slab_order(int size, int min_objects,
         return order;
 }
 
-static inline int calculate_order(int size)
+static inline int calculate_order(int size, int reserved)
 {
         int order;
         int min_objects;
@@ -2034,14 +2278,14 @@ static inline int calculate_order(int size)
         min_objects = slub_min_objects;
         if (!min_objects)
                 min_objects = 4 * (fls(nr_cpu_ids) + 1);
-        max_objects = (PAGE_SIZE << slub_max_order)/size;
+        max_objects = order_objects(slub_max_order, size, reserved);
         min_objects = min(min_objects, max_objects);
 
         while (min_objects > 1) {
                 fraction = 16;
                 while (fraction >= 4) {
                         order = slab_order(size, min_objects,
-                                                slub_max_order, fraction);
+                                        slub_max_order, fraction, reserved);
                         if (order <= slub_max_order)
                                 return order;
                         fraction /= 2;
@@ -2053,14 +2297,14 @@ static inline int calculate_order(int size)
          * We were unable to place multiple objects in a slab. Now
          * lets see if we can place a single object there.
          */
-        order = slab_order(size, 1, slub_max_order, 1);
+        order = slab_order(size, 1, slub_max_order, 1, reserved);
         if (order <= slub_max_order)
                 return order;
 
         /*
          * Doh this slab cannot be placed using slub_max_order.
          */
-        order = slab_order(size, 1, MAX_ORDER, 1);
+        order = slab_order(size, 1, MAX_ORDER, 1, reserved);
         if (order < MAX_ORDER)
                 return order;
         return -ENOSYS;
@@ -2110,9 +2354,23 @@ static inline int alloc_kmem_cache_cpus(struct kmem_cache *s)
         BUILD_BUG_ON(PERCPU_DYNAMIC_EARLY_SIZE <
                         SLUB_PAGE_SHIFT * sizeof(struct kmem_cache_cpu));
 
+#ifdef CONFIG_CMPXCHG_LOCAL
+        /*
+         * Must align to double word boundary for the double cmpxchg instructions
+         * to work.
+         */
+        s->cpu_slab = __alloc_percpu(sizeof(struct kmem_cache_cpu), 2 * sizeof(void *));
+#else
+        /* Regular alignment is sufficient */
         s->cpu_slab = alloc_percpu(struct kmem_cache_cpu);
+#endif
+
+        if (!s->cpu_slab)
+                return 0;
 
-        return s->cpu_slab != NULL;
+        init_kmem_cache_cpus(s);
+
+        return 1;
 }
 
 static struct kmem_cache *kmem_cache_node;
@@ -2311,7 +2569,7 @@ static int calculate_sizes(struct kmem_cache *s, int forced_order)
         if (forced_order >= 0)
                 order = forced_order;
         else
-                order = calculate_order(size);
+                order = calculate_order(size, s->reserved);
 
         if (order < 0)
                 return 0;
@@ -2329,8 +2587,8 @@ static int calculate_sizes(struct kmem_cache *s, int forced_order)
         /*
          * Determine the number of objects per slab
          */
-        s->oo = oo_make(order, size);
-        s->min = oo_make(get_order(size), size);
+        s->oo = oo_make(order, size, s->reserved);
+        s->min = oo_make(get_order(size), size, s->reserved);
         if (oo_objects(s->oo) > oo_objects(s->max))
                 s->max = s->oo;
 
@@ -2349,6 +2607,10 @@ static int kmem_cache_open(struct kmem_cache *s,
         s->objsize = size;
         s->align = align;
         s->flags = kmem_cache_flags(size, flags, name, ctor);
+        s->reserved = 0;
+
+        if (need_reserve_slab_rcu && (s->flags & SLAB_DESTROY_BY_RCU))
+                s->reserved = sizeof(struct rcu_head);
 
         if (!calculate_sizes(s, -1))
                 goto error;
@@ -2399,12 +2661,6 @@ unsigned int kmem_cache_size(struct kmem_cache *s)
 }
 EXPORT_SYMBOL(kmem_cache_size);
 
-const char *kmem_cache_name(struct kmem_cache *s)
-{
-        return s->name;
-}
-EXPORT_SYMBOL(kmem_cache_name);
-
 static void list_slab_objects(struct kmem_cache *s, struct page *page,
                                                         const char *text)
 {
@@ -2696,7 +2952,6 @@ EXPORT_SYMBOL(__kmalloc_node);
 size_t ksize(const void *object)
 {
         struct page *page;
-        struct kmem_cache *s;
 
         if (unlikely(object == ZERO_SIZE_PTR))
                 return 0;
@@ -2707,28 +2962,8 @@ size_t ksize(const void *object)
                 WARN_ON(!PageCompound(page));
                 return PAGE_SIZE << compound_order(page);
         }
-        s = page->slab;
-
-#ifdef CONFIG_SLUB_DEBUG
-        /*
-         * Debugging requires use of the padding between object
-         * and whatever may come after it.
-         */
-        if (s->flags & (SLAB_RED_ZONE | SLAB_POISON))
-                return s->objsize;
 
-#endif
-        /*
-         * If we have the need to store the freelist pointer
-         * back there or track user information then we can
-         * only use the space before that information.
-         */
-        if (s->flags & (SLAB_DESTROY_BY_RCU | SLAB_STORE_USER))
-                return s->inuse;
-        /*
-         * Else we can use all the padding etc for the allocation
-         */
-        return s->size;
+        return slab_ksize(page->slab);
 }
 EXPORT_SYMBOL(ksize);
 
@@ -4017,6 +4252,12 @@ static ssize_t destroy_by_rcu_show(struct kmem_cache *s, char *buf)
 }
 SLAB_ATTR_RO(destroy_by_rcu);
 
+static ssize_t reserved_show(struct kmem_cache *s, char *buf)
+{
+        return sprintf(buf, "%d\n", s->reserved);
+}
+SLAB_ATTR_RO(reserved);
+
 #ifdef CONFIG_SLUB_DEBUG
 static ssize_t slabs_show(struct kmem_cache *s, char *buf)
 {
@@ -4303,6 +4544,7 @@ static struct attribute *slab_attrs[] = {
         &reclaim_account_attr.attr,
         &destroy_by_rcu_attr.attr,
         &shrink_attr.attr,
+        &reserved_attr.attr,
 #ifdef CONFIG_SLUB_DEBUG
         &total_objects_attr.attr,
         &slabs_attr.attr,
diff --git a/mm/swap.c b/mm/swap.c
index c02f93611a84..a448db377cb0 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -39,6 +39,7 @@ int page_cluster;
 
 static DEFINE_PER_CPU(struct pagevec[NR_LRU_LISTS], lru_add_pvecs);
 static DEFINE_PER_CPU(struct pagevec, lru_rotate_pvecs);
+static DEFINE_PER_CPU(struct pagevec, lru_deactivate_pvecs);
 
 /*
  * This path almost never happens for VM activity - pages are normally
@@ -178,15 +179,13 @@ void put_pages_list(struct list_head *pages)
 }
 EXPORT_SYMBOL(put_pages_list);
 
-/*
- * pagevec_move_tail() must be called with IRQ disabled.
- * Otherwise this may cause nasty races.
- */
-static void pagevec_move_tail(struct pagevec *pvec)
+static void pagevec_lru_move_fn(struct pagevec *pvec,
+                                void (*move_fn)(struct page *page, void *arg),
+                                void *arg)
 {
         int i;
-        int pgmoved = 0;
         struct zone *zone = NULL;
+        unsigned long flags = 0;
 
         for (i = 0; i < pagevec_count(pvec); i++) {
                 struct page *page = pvec->pages[i];
@@ -194,29 +193,50 @@ static void pagevec_move_tail(struct pagevec *pvec)
 
                 if (pagezone != zone) {
                         if (zone)
-                                spin_unlock(&zone->lru_lock);
+                                spin_unlock_irqrestore(&zone->lru_lock, flags);
                         zone = pagezone;
-                        spin_lock(&zone->lru_lock);
-                }
-                if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) {
-                        int lru = page_lru_base_type(page);
-                        list_move_tail(&page->lru, &zone->lru[lru].list);
-                        pgmoved++;
+                        spin_lock_irqsave(&zone->lru_lock, flags);
                 }
+
+                (*move_fn)(page, arg);
         }
         if (zone)
-                spin_unlock(&zone->lru_lock);
-        __count_vm_events(PGROTATED, pgmoved);
+                spin_unlock_irqrestore(&zone->lru_lock, flags);
         release_pages(pvec->pages, pvec->nr, pvec->cold);
         pagevec_reinit(pvec);
 }
 
+static void pagevec_move_tail_fn(struct page *page, void *arg)
+{
+        int *pgmoved = arg;
+        struct zone *zone = page_zone(page);
+
+        if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) {
+                enum lru_list lru = page_lru_base_type(page);
+                list_move_tail(&page->lru, &zone->lru[lru].list);
+                mem_cgroup_rotate_reclaimable_page(page);
+                (*pgmoved)++;
+        }
+}
+
+/*
+ * pagevec_move_tail() must be called with IRQ disabled.
+ * Otherwise this may cause nasty races.
+ */
+static void pagevec_move_tail(struct pagevec *pvec)
+{
+        int pgmoved = 0;
+
+        pagevec_lru_move_fn(pvec, pagevec_move_tail_fn, &pgmoved);
+        __count_vm_events(PGROTATED, pgmoved);
+}
+
 /*
  * Writeback is about to end against a page which has been marked for immediate
  * reclaim.  If it still appears to be reclaimable, move it to the tail of the
  * inactive list.
  */
-void  rotate_reclaimable_page(struct page *page)
+void rotate_reclaimable_page(struct page *page)
 {
         if (!PageLocked(page) && !PageDirty(page) && !PageActive(page) &&
             !PageUnevictable(page) && PageLRU(page)) {
@@ -347,6 +367,71 @@ void add_page_to_unevictable_list(struct page *page)
 }
 
 /*
+ * If the page can not be invalidated, it is moved to the
+ * inactive list to speed up its reclaim.  It is moved to the
+ * head of the list, rather than the tail, to give the flusher
+ * threads some time to write it out, as this is much more
+ * effective than the single-page writeout from reclaim.
+ *
+ * If the page isn't page_mapped and dirty/writeback, the page
+ * could reclaim asap using PG_reclaim.
+ *
+ * 1. active, mapped page -> none
+ * 2. active, dirty/writeback page -> inactive, head, PG_reclaim
+ * 3. inactive, mapped page -> none
+ * 4. inactive, dirty/writeback page -> inactive, head, PG_reclaim
+ * 5. inactive, clean -> inactive, tail
+ * 6. Others -> none
+ *
+ * In 4, why it moves inactive's head, the VM expects the page would
+ * be write it out by flusher threads as this is much more effective
+ * than the single-page writeout from reclaim.
+ */
+static void lru_deactivate_fn(struct page *page, void *arg)
+{
+        int lru, file;
+        bool active;
+        struct zone *zone = page_zone(page);
+
+        if (!PageLRU(page))
+                return;
+
+        /* Some processes are using the page */
+        if (page_mapped(page))
+                return;
+
+        active = PageActive(page);
+
+        file = page_is_file_cache(page);
+        lru = page_lru_base_type(page);
+        del_page_from_lru_list(zone, page, lru + active);
+        ClearPageActive(page);
+        ClearPageReferenced(page);
+        add_page_to_lru_list(zone, page, lru);
+
+        if (PageWriteback(page) || PageDirty(page)) {
+                /*
+                 * PG_reclaim could be raced with end_page_writeback
+                 * It can make readahead confusing.  But race window
+                 * is _really_ small and  it's non-critical problem.
+                 */
+                SetPageReclaim(page);
+        } else {
+                /*
+                 * The page's writeback ends up during pagevec
+                 * We moves tha page into tail of inactive.
+                 */
+                list_move_tail(&page->lru, &zone->lru[lru].list);
+                mem_cgroup_rotate_reclaimable_page(page);
+                __count_vm_event(PGROTATED);
+        }
+
+        if (active)
+                __count_vm_event(PGDEACTIVATE);
+        update_page_reclaim_stat(zone, page, file, 0);
+}
+
+/*
  * Drain pages out of the cpu's pagevecs.
  * Either "cpu" is the current CPU, and preemption has already been
  * disabled; or "cpu" is being hot-unplugged, and is already dead.
@@ -372,6 +457,29 @@ static void drain_cpu_pagevecs(int cpu)
                 pagevec_move_tail(pvec);
                 local_irq_restore(flags);
         }
+
+        pvec = &per_cpu(lru_deactivate_pvecs, cpu);
+        if (pagevec_count(pvec))
+                pagevec_lru_move_fn(pvec, lru_deactivate_fn, NULL);
+}
+
+/**
+ * deactivate_page - forcefully deactivate a page
+ * @page: page to deactivate
+ *
+ * This function hints the VM that @page is a good reclaim candidate,
+ * for example if its invalidation fails due to the page being dirty
+ * or under writeback.
+ */
+void deactivate_page(struct page *page)
+{
+        if (likely(get_page_unless_zero(page))) {
+                struct pagevec *pvec = &get_cpu_var(lru_deactivate_pvecs);
+
+                if (!pagevec_add(pvec, page))
+                        pagevec_lru_move_fn(pvec, lru_deactivate_fn, NULL);
+                put_cpu_var(lru_deactivate_pvecs);
+        }
 }
 
 void lru_add_drain(void)
@@ -516,44 +624,33 @@ void lru_add_page_tail(struct zone* zone,
         }
 }
 
+static void ____pagevec_lru_add_fn(struct page *page, void *arg)
+{
+        enum lru_list lru = (enum lru_list)arg;
+        struct zone *zone = page_zone(page);
+        int file = is_file_lru(lru);
+        int active = is_active_lru(lru);
+
+        VM_BUG_ON(PageActive(page));
+        VM_BUG_ON(PageUnevictable(page));
+        VM_BUG_ON(PageLRU(page));
+
+        SetPageLRU(page);
+        if (active)
+                SetPageActive(page);
+        update_page_reclaim_stat(zone, page, file, active);
+        add_page_to_lru_list(zone, page, lru);
+}
+
 /*
  * Add the passed pages to the LRU, then drop the caller's refcount
  * on them.  Reinitialises the caller's pagevec.
  */
 void ____pagevec_lru_add(struct pagevec *pvec, enum lru_list lru)
 {
-        int i;
-        struct zone *zone = NULL;
-
         VM_BUG_ON(is_unevictable_lru(lru));
 
-        for (i = 0; i < pagevec_count(pvec); i++) {
-                struct page *page = pvec->pages[i];
-                struct zone *pagezone = page_zone(page);
-                int file;
-                int active;
-
-                if (pagezone != zone) {
-                        if (zone)
-                                spin_unlock_irq(&zone->lru_lock);
-                        zone = pagezone;
-                        spin_lock_irq(&zone->lru_lock);
-                }
-                VM_BUG_ON(PageActive(page));
-                VM_BUG_ON(PageUnevictable(page));
-                VM_BUG_ON(PageLRU(page));
-                SetPageLRU(page);
-                active = is_active_lru(lru);
-                file = is_file_lru(lru);
-                if (active)
-                        SetPageActive(page);
-                update_page_reclaim_stat(zone, page, file, active);
-                add_page_to_lru_list(zone, page, lru);
-        }
-        if (zone)
-                spin_unlock_irq(&zone->lru_lock);
-        release_pages(pvec->pages, pvec->nr, pvec->cold);
-        pagevec_reinit(pvec);
+        pagevec_lru_move_fn(pvec, ____pagevec_lru_add_fn, (void *)lru);
 }
 
 EXPORT_SYMBOL(____pagevec_lru_add);
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 0341c5700e34..71b42ec55b78 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -212,8 +212,8 @@ static int wait_for_discard(void *word)
 #define SWAPFILE_CLUSTER        256
 #define LATENCY_LIMIT           256
 
-static inline unsigned long scan_swap_map(struct swap_info_struct *si,
-                                          unsigned char usage)
+static unsigned long scan_swap_map(struct swap_info_struct *si,
+                                   unsigned char usage)
 {
         unsigned long offset;
         unsigned long scan_base;
@@ -1550,6 +1550,36 @@ bad_bmap:
         goto out;
 }
 
+static void enable_swap_info(struct swap_info_struct *p, int prio,
+                                unsigned char *swap_map)
+{
+        int i, prev;
+
+        spin_lock(&swap_lock);
+        if (prio >= 0)
+                p->prio = prio;
+        else
+                p->prio = --least_priority;
+        p->swap_map = swap_map;
+        p->flags |= SWP_WRITEOK;
+        nr_swap_pages += p->pages;
+        total_swap_pages += p->pages;
+
+        /* insert swap space into swap_list: */
+        prev = -1;
+        for (i = swap_list.head; i >= 0; i = swap_info[i]->next) {
+                if (p->prio >= swap_info[i]->prio)
+                        break;
+                prev = i;
+        }
+        p->next = i;
+        if (prev < 0)
+                swap_list.head = swap_list.next = p->type;
+        else
+                swap_info[prev]->next = p->type;
+        spin_unlock(&swap_lock);
+}
+
 SYSCALL_DEFINE1(swapoff, const char __user *, specialfile)
 {
         struct swap_info_struct *p = NULL;
@@ -1621,25 +1651,14 @@ SYSCALL_DEFINE1(swapoff, const char __user *, specialfile)
         current->flags &= ~PF_OOM_ORIGIN;
 
         if (err) {
+                /*
+                 * reading p->prio and p->swap_map outside the lock is
+                 * safe here because only sys_swapon and sys_swapoff
+                 * change them, and there can be no other sys_swapon or
+                 * sys_swapoff for this swap_info_struct at this point.
+                 */
                 /* re-insert swap space back into swap_list */
-                spin_lock(&swap_lock);
-                if (p->prio < 0)
-                        p->prio = --least_priority;
-                prev = -1;
-                for (i = swap_list.head; i >= 0; i = swap_info[i]->next) {
-                        if (p->prio >= swap_info[i]->prio)
-                                break;
-                        prev = i;
-                }
-                p->next = i;
-                if (prev < 0)
-                        swap_list.head = swap_list.next = type;
-                else
-                        swap_info[prev]->next = type;
-                nr_swap_pages += p->pages;
-                total_swap_pages += p->pages;
-                p->flags |= SWP_WRITEOK;
-                spin_unlock(&swap_lock);
+                enable_swap_info(p, p->prio, p->swap_map);
                 goto out_dput;
         }
 
@@ -1844,49 +1863,24 @@ static int __init max_swapfiles_check(void)
 late_initcall(max_swapfiles_check);
 #endif
 
-/*
- * Written 01/25/92 by Simmule Turner, heavily changed by Linus.
- *
- * The swapon system call
- */
-SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
+static struct swap_info_struct *alloc_swap_info(void)
 {
         struct swap_info_struct *p;
-        char *name = NULL;
-        struct block_device *bdev = NULL;
-        struct file *swap_file = NULL;
-        struct address_space *mapping;
         unsigned int type;
-        int i, prev;
-        int error;
-        union swap_header *swap_header;
-        unsigned int nr_good_pages;
-        int nr_extents = 0;
-        sector_t span;
-        unsigned long maxpages;
-        unsigned long swapfilepages;
-        unsigned char *swap_map = NULL;
-        struct page *page = NULL;
-        struct inode *inode = NULL;
-        int did_down = 0;
-
-        if (!capable(CAP_SYS_ADMIN))
-                return -EPERM;
 
         p = kzalloc(sizeof(*p), GFP_KERNEL);
         if (!p)
-                return -ENOMEM;
+                return ERR_PTR(-ENOMEM);
 
         spin_lock(&swap_lock);
         for (type = 0; type < nr_swapfiles; type++) {
                 if (!(swap_info[type]->flags & SWP_USED))
                         break;
         }
-        error = -EPERM;
         if (type >= MAX_SWAPFILES) {
                 spin_unlock(&swap_lock);
                 kfree(p);
-                goto out;
+                return ERR_PTR(-EPERM);
         }
         if (type >= nr_swapfiles) {
                 p->type = type;
@@ -1911,81 +1905,49 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
         p->next = -1;
         spin_unlock(&swap_lock);
 
-        name = getname(specialfile);
-        error = PTR_ERR(name);
-        if (IS_ERR(name)) {
-                name = NULL;
-                goto bad_swap_2;
-        }
-        swap_file = filp_open(name, O_RDWR|O_LARGEFILE, 0);
-        error = PTR_ERR(swap_file);
-        if (IS_ERR(swap_file)) {
-                swap_file = NULL;
-                goto bad_swap_2;
-        }
-
-        p->swap_file = swap_file;
-        mapping = swap_file->f_mapping;
-        inode = mapping->host;
-
-        error = -EBUSY;
-        for (i = 0; i < nr_swapfiles; i++) {
-                struct swap_info_struct *q = swap_info[i];
+        return p;
+}
 
-                if (i == type || !q->swap_file)
-                        continue;
-                if (mapping == q->swap_file->f_mapping)
-                        goto bad_swap;
-        }
+static int claim_swapfile(struct swap_info_struct *p, struct inode *inode)
+{
+        int error;
 
-        error = -EINVAL;
         if (S_ISBLK(inode->i_mode)) {
-                bdev = bdgrab(I_BDEV(inode));
-                error = blkdev_get(bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL,
+                p->bdev = bdgrab(I_BDEV(inode));
+                error = blkdev_get(p->bdev,
+                                   FMODE_READ | FMODE_WRITE | FMODE_EXCL,
                                    sys_swapon);
                 if (error < 0) {
-                        bdev = NULL;
-                        error = -EINVAL;
-                        goto bad_swap;
+                        p->bdev = NULL;
+                        return -EINVAL;
                 }
-                p->old_block_size = block_size(bdev);
-                error = set_blocksize(bdev, PAGE_SIZE);
+                p->old_block_size = block_size(p->bdev);
+                error = set_blocksize(p->bdev, PAGE_SIZE);
                 if (error < 0)
-                        goto bad_swap;
-                p->bdev = bdev;
+                        return error;
                 p->flags |= SWP_BLKDEV;
         } else if (S_ISREG(inode->i_mode)) {
                 p->bdev = inode->i_sb->s_bdev;
                 mutex_lock(&inode->i_mutex);
-                did_down = 1;
-                if (IS_SWAPFILE(inode)) {
-                        error = -EBUSY;
-                        goto bad_swap;
-                }
-        } else {
-                goto bad_swap;
-        }
+                if (IS_SWAPFILE(inode))
+                        return -EBUSY;
+        } else
+                return -EINVAL;
 
-        swapfilepages = i_size_read(inode) >> PAGE_SHIFT;
+        return 0;
+}
 
-        /*
-         * Read the swap header.
-         */
-        if (!mapping->a_ops->readpage) {
-                error = -EINVAL;
-                goto bad_swap;
-        }
-        page = read_mapping_page(mapping, 0, swap_file);
-        if (IS_ERR(page)) {
-                error = PTR_ERR(page);
-                goto bad_swap;
-        }
-        swap_header = kmap(page);
+static unsigned long read_swap_header(struct swap_info_struct *p,
+                                        union swap_header *swap_header,
+                                        struct inode *inode)
+{
+        int i;
+        unsigned long maxpages;
+        unsigned long swapfilepages;
 
         if (memcmp("SWAPSPACE2", swap_header->magic.magic, 10)) {
                 printk(KERN_ERR "Unable to find swap-space signature\n");
-                error = -EINVAL;
-                goto bad_swap;
+                return 0;
         }
 
         /* swap partition endianess hack... */
@@ -2001,8 +1963,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
                 printk(KERN_WARNING
                        "Unable to handle swap header version %d\n",
                        swap_header->info.version);
-                error = -EINVAL;
-                goto bad_swap;
+                return 0;
         }
 
         p->lowest_bit  = 1;
@@ -2033,61 +1994,155 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
         }
         p->highest_bit = maxpages - 1;
 
-        error = -EINVAL;
         if (!maxpages)
-                goto bad_swap;
+                return 0;
+        swapfilepages = i_size_read(inode) >> PAGE_SHIFT;
         if (swapfilepages && maxpages > swapfilepages) {
                 printk(KERN_WARNING
                        "Swap area shorter than signature indicates\n");
-                goto bad_swap;
+                return 0;
         }
         if (swap_header->info.nr_badpages && S_ISREG(inode->i_mode))
-                goto bad_swap;
+                return 0;
         if (swap_header->info.nr_badpages > MAX_SWAP_BADPAGES)
-                goto bad_swap;
+                return 0;
 
-        /* OK, set up the swap map and apply the bad block list */
-        swap_map = vmalloc(maxpages);
-        if (!swap_map) {
-                error = -ENOMEM;
-                goto bad_swap;
-        }
+        return maxpages;
+}
+
+static int setup_swap_map_and_extents(struct swap_info_struct *p,
+                                        union swap_header *swap_header,
+                                        unsigned char *swap_map,
+                                        unsigned long maxpages,
+                                        sector_t *span)
+{
+        int i;
+        unsigned int nr_good_pages;
+        int nr_extents;
 
-        memset(swap_map, 0, maxpages);
         nr_good_pages = maxpages - 1;   /* omit header page */
 
         for (i = 0; i < swap_header->info.nr_badpages; i++) {
                 unsigned int page_nr = swap_header->info.badpages[i];
-                if (page_nr == 0 || page_nr > swap_header->info.last_page) {
-                        error = -EINVAL;
-                        goto bad_swap;
-                }
+                if (page_nr == 0 || page_nr > swap_header->info.last_page)
+                        return -EINVAL;
                 if (page_nr < maxpages) {
                         swap_map[page_nr] = SWAP_MAP_BAD;
                         nr_good_pages--;
                 }
         }
 
-        error = swap_cgroup_swapon(type, maxpages);
-        if (error)
-                goto bad_swap;
-
         if (nr_good_pages) {
                 swap_map[0] = SWAP_MAP_BAD;
                 p->max = maxpages;
                 p->pages = nr_good_pages;
-                nr_extents = setup_swap_extents(p, &span);
-                if (nr_extents < 0) {
-                        error = nr_extents;
-                        goto bad_swap;
-                }
+                nr_extents = setup_swap_extents(p, span);
+                if (nr_extents < 0)
+                        return nr_extents;
                 nr_good_pages = p->pages;
         }
         if (!nr_good_pages) {
                 printk(KERN_WARNING "Empty swap-file\n");
+                return -EINVAL;
+        }
+
+        return nr_extents;
+}
+
+SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
+{
+        struct swap_info_struct *p;
+        char *name;
+        struct file *swap_file = NULL;
+        struct address_space *mapping;
+        int i;
+        int prio;
+        int error;
+        union swap_header *swap_header;
+        int nr_extents;
+        sector_t span;
+        unsigned long maxpages;
+        unsigned char *swap_map = NULL;
+        struct page *page = NULL;
+        struct inode *inode = NULL;
+
+        if (!capable(CAP_SYS_ADMIN))
+                return -EPERM;
+
+        p = alloc_swap_info();
+        if (IS_ERR(p))
+                return PTR_ERR(p);
+
+        name = getname(specialfile);
+        if (IS_ERR(name)) {
+                error = PTR_ERR(name);
+                name = NULL;
+                goto bad_swap;
+        }
+        swap_file = filp_open(name, O_RDWR|O_LARGEFILE, 0);
+        if (IS_ERR(swap_file)) {
+                error = PTR_ERR(swap_file);
+                swap_file = NULL;
+                goto bad_swap;
+        }
+
+        p->swap_file = swap_file;
+        mapping = swap_file->f_mapping;
+
+        for (i = 0; i < nr_swapfiles; i++) {
+                struct swap_info_struct *q = swap_info[i];
+
+                if (q == p || !q->swap_file)
+                        continue;
+                if (mapping == q->swap_file->f_mapping) {
+                        error = -EBUSY;
+                        goto bad_swap;
+                }
+        }
+
+        inode = mapping->host;
+        /* If S_ISREG(inode->i_mode) will do mutex_lock(&inode->i_mutex); */
+        error = claim_swapfile(p, inode);
+        if (unlikely(error))
+                goto bad_swap;
+
+        /*
+         * Read the swap header.
+         */
+        if (!mapping->a_ops->readpage) {
                 error = -EINVAL;
                 goto bad_swap;
         }
+        page = read_mapping_page(mapping, 0, swap_file);
+        if (IS_ERR(page)) {
+                error = PTR_ERR(page);
+                goto bad_swap;
+        }
+        swap_header = kmap(page);
+
+        maxpages = read_swap_header(p, swap_header, inode);
+        if (unlikely(!maxpages)) {
+                error = -EINVAL;
+                goto bad_swap;
+        }
+
+        /* OK, set up the swap map and apply the bad block list */
+        swap_map = vzalloc(maxpages);
+        if (!swap_map) {
+                error = -ENOMEM;
+                goto bad_swap;
+        }
+
+        error = swap_cgroup_swapon(p->type, maxpages);
+        if (error)
+                goto bad_swap;
+
+        nr_extents = setup_swap_map_and_extents(p, swap_header, swap_map,
+                maxpages, &span);
+        if (unlikely(nr_extents < 0)) {
+                error = nr_extents;
+                goto bad_swap;
+        }
 
         if (p->bdev) {
                 if (blk_queue_nonrot(bdev_get_queue(p->bdev))) {
@@ -2099,58 +2154,46 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
         }
 
         mutex_lock(&swapon_mutex);
-        spin_lock(&swap_lock);
+        prio = -1;
         if (swap_flags & SWAP_FLAG_PREFER)
-                p->prio =
+                prio =
                   (swap_flags & SWAP_FLAG_PRIO_MASK) >> SWAP_FLAG_PRIO_SHIFT;
-        else
-                p->prio = --least_priority;
-        p->swap_map = swap_map;
-        p->flags |= SWP_WRITEOK;
-        nr_swap_pages += nr_good_pages;
-        total_swap_pages += nr_good_pages;
+        enable_swap_info(p, prio, swap_map);
 
         printk(KERN_INFO "Adding %uk swap on %s.  "
                         "Priority:%d extents:%d across:%lluk %s%s\n",
-                nr_good_pages<<(PAGE_SHIFT-10), name, p->prio,
+                p->pages<<(PAGE_SHIFT-10), name, p->prio,
                 nr_extents, (unsigned long long)span<<(PAGE_SHIFT-10),
                 (p->flags & SWP_SOLIDSTATE) ? "SS" : "",
                 (p->flags & SWP_DISCARDABLE) ? "D" : "");
 
-        /* insert swap space into swap_list: */
-        prev = -1;
-        for (i = swap_list.head; i >= 0; i = swap_info[i]->next) {
-                if (p->prio >= swap_info[i]->prio)
-                        break;
-                prev = i;
-        }
-        p->next = i;
-        if (prev < 0)
-                swap_list.head = swap_list.next = type;
-        else
-                swap_info[prev]->next = type;
-        spin_unlock(&swap_lock);
         mutex_unlock(&swapon_mutex);
         atomic_inc(&proc_poll_event);
         wake_up_interruptible(&proc_poll_wait);
 
+        if (S_ISREG(inode->i_mode))
+                inode->i_flags |= S_SWAPFILE;
         error = 0;
         goto out;
 bad_swap:
-        if (bdev) {
-                set_blocksize(bdev, p->old_block_size);
-                blkdev_put(bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
+        if (inode && S_ISBLK(inode->i_mode) && p->bdev) {
+                set_blocksize(p->bdev, p->old_block_size);
+                blkdev_put(p->bdev, FMODE_READ | FMODE_WRITE | FMODE_EXCL);
         }
         destroy_swap_extents(p);
-        swap_cgroup_swapoff(type);
-bad_swap_2:
+        swap_cgroup_swapoff(p->type);
         spin_lock(&swap_lock);
         p->swap_file = NULL;
         p->flags = 0;
         spin_unlock(&swap_lock);
         vfree(swap_map);
-        if (swap_file)
+        if (swap_file) {
+                if (inode && S_ISREG(inode->i_mode)) {
+                        mutex_unlock(&inode->i_mutex);
+                        inode = NULL;
+                }
                 filp_close(swap_file, NULL);
+        }
 out:
         if (page && !IS_ERR(page)) {
                 kunmap(page);
@@ -2158,11 +2201,8 @@ out:
         }
         if (name)
                 putname(name);
-        if (did_down) {
-                if (!error)
-                        inode->i_flags |= S_SWAPFILE;
+        if (inode && S_ISREG(inode->i_mode))
                 mutex_unlock(&inode->i_mutex);
-        }
         return error;
 }
 
diff --git a/mm/truncate.c b/mm/truncate.c
index d64296be00d3..a95667529135 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -106,9 +106,8 @@ truncate_complete_page(struct address_space *mapping, struct page *page)
         cancel_dirty_page(page, PAGE_CACHE_SIZE);
 
         clear_page_mlock(page);
-        remove_from_page_cache(page);
         ClearPageMappedToDisk(page);
-        page_cache_release(page);       /* pagecache ref */
+        delete_from_page_cache(page);
         return 0;
 }
 
@@ -322,11 +321,12 @@ EXPORT_SYMBOL(truncate_inode_pages);
  * pagetables.
  */
 unsigned long invalidate_mapping_pages(struct address_space *mapping,
-                                       pgoff_t start, pgoff_t end)
+                pgoff_t start, pgoff_t end)
 {
         struct pagevec pvec;
         pgoff_t next = start;
-        unsigned long ret = 0;
+        unsigned long ret;
+        unsigned long count = 0;
         int i;
 
         pagevec_init(&pvec, 0);
@@ -353,9 +353,15 @@ unsigned long invalidate_mapping_pages(struct address_space *mapping,
                         if (lock_failed)
                                 continue;
 
-                        ret += invalidate_inode_page(page);
-
+                        ret = invalidate_inode_page(page);
                         unlock_page(page);
+                        /*
+                         * Invalidation is a hint that the page is no longer
+                         * of interest and try to speed up its reclaim.
+                         */
+                        if (!ret)
+                                deactivate_page(page);
+                        count += ret;
                         if (next > end)
                                 break;
                 }
@@ -363,7 +369,7 @@ unsigned long invalidate_mapping_pages(struct address_space *mapping,
                 mem_cgroup_uncharge_end();
                 cond_resched();
         }
-        return ret;
+        return count;
 }
 EXPORT_SYMBOL(invalidate_mapping_pages);
 
@@ -389,7 +395,7 @@ invalidate_complete_page2(struct address_space *mapping, struct page *page)
 
         clear_page_mlock(page);
         BUG_ON(page_has_private(page));
-        __remove_from_page_cache(page);
+        __delete_from_page_cache(page);
         spin_unlock_irq(&mapping->tree_lock);
         mem_cgroup_uncharge_cache_page(page);
 
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index f9b166732e70..5d6030235d7a 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -261,8 +261,15 @@ struct vmap_area {
 };
 
 static DEFINE_SPINLOCK(vmap_area_lock);
-static struct rb_root vmap_area_root = RB_ROOT;
 static LIST_HEAD(vmap_area_list);
+static struct rb_root vmap_area_root = RB_ROOT;
+
+/* The vmap cache globals are protected by vmap_area_lock */
+static struct rb_node *free_vmap_cache;
+static unsigned long cached_hole_size;
+static unsigned long cached_vstart;
+static unsigned long cached_align;
+
 static unsigned long vmap_area_pcpu_hole;
 
 static struct vmap_area *__find_vmap_area(unsigned long addr)
@@ -331,9 +338,11 @@ static struct vmap_area *alloc_vmap_area(unsigned long size,
         struct rb_node *n;
         unsigned long addr;
         int purged = 0;
+        struct vmap_area *first;
 
         BUG_ON(!size);
         BUG_ON(size & ~PAGE_MASK);
+        BUG_ON(!is_power_of_2(align));
 
         va = kmalloc_node(sizeof(struct vmap_area),
                         gfp_mask & GFP_RECLAIM_MASK, node);
@@ -341,79 +350,106 @@ static struct vmap_area *alloc_vmap_area(unsigned long size,
                 return ERR_PTR(-ENOMEM);
 
 retry:
-        addr = ALIGN(vstart, align);
-
         spin_lock(&vmap_area_lock);
-        if (addr + size - 1 < addr)
-                goto overflow;
+        /*
+         * Invalidate cache if we have more permissive parameters.
+         * cached_hole_size notes the largest hole noticed _below_
+         * the vmap_area cached in free_vmap_cache: if size fits
+         * into that hole, we want to scan from vstart to reuse
+         * the hole instead of allocating above free_vmap_cache.
+         * Note that __free_vmap_area may update free_vmap_cache
+         * without updating cached_hole_size or cached_align.
+         */
+        if (!free_vmap_cache ||
+                        size < cached_hole_size ||
+                        vstart < cached_vstart ||
+                        align < cached_align) {
+nocache:
+                cached_hole_size = 0;
+                free_vmap_cache = NULL;
+        }
+        /* record if we encounter less permissive parameters */
+        cached_vstart = vstart;
+        cached_align = align;
+
+        /* find starting point for our search */
+        if (free_vmap_cache) {
+                first = rb_entry(free_vmap_cache, struct vmap_area, rb_node);
+                addr = ALIGN(first->va_end + PAGE_SIZE, align);
+                if (addr < vstart)
+                        goto nocache;
+                if (addr + size - 1 < addr)
+                        goto overflow;
+
+        } else {
+                addr = ALIGN(vstart, align);
+                if (addr + size - 1 < addr)
+                        goto overflow;
 
-        /* XXX: could have a last_hole cache */
-        n = vmap_area_root.rb_node;
-        if (n) {
-                struct vmap_area *first = NULL;
+                n = vmap_area_root.rb_node;
+                first = NULL;
 
-                do {
+                while (n) {
                         struct vmap_area *tmp;
                         tmp = rb_entry(n, struct vmap_area, rb_node);
                         if (tmp->va_end >= addr) {
-                                if (!first && tmp->va_start < addr + size)
-                                        first = tmp;
-                                n = n->rb_left;
-                        } else {
                                 first = tmp;
+                                if (tmp->va_start <= addr)
+                                        break;
+                                n = n->rb_left;
+                        } else
                                 n = n->rb_right;
-                        }
-                } while (n);
+                }
 
                 if (!first)
                         goto found;
-
-                if (first->va_end < addr) {
-                        n = rb_next(&first->rb_node);
-                        if (n)
-                                first = rb_entry(n, struct vmap_area, rb_node);
-                        else
-                                goto found;
-                }
-
-                while (addr + size > first->va_start && addr + size <= vend) {
-                        addr = ALIGN(first->va_end + PAGE_SIZE, align);
-                        if (addr + size - 1 < addr)
-                                goto overflow;
-
-                        n = rb_next(&first->rb_node);
-                        if (n)
-                                first = rb_entry(n, struct vmap_area, rb_node);
-                        else
-                                goto found;
-                }
         }
-found:
-        if (addr + size > vend) {
-overflow:
-                spin_unlock(&vmap_area_lock);
-                if (!purged) {
-                        purge_vmap_area_lazy();
-                        purged = 1;
-                        goto retry;
-                }
-                if (printk_ratelimit())
-                        printk(KERN_WARNING
-                                "vmap allocation for size %lu failed: "
-                                "use vmalloc=<size> to increase size.\n", size);
-                kfree(va);
-                return ERR_PTR(-EBUSY);
+
+        /* from the starting point, walk areas until a suitable hole is found */
+        while (addr + size >= first->va_start && addr + size <= vend) {
+                if (addr + cached_hole_size < first->va_start)
+                        cached_hole_size = first->va_start - addr;
+                addr = ALIGN(first->va_end + PAGE_SIZE, align);
+                if (addr + size - 1 < addr)
+                        goto overflow;
+
+                n = rb_next(&first->rb_node);
+                if (n)
+                        first = rb_entry(n, struct vmap_area, rb_node);
+                else
+                        goto found;
         }
 
-        BUG_ON(addr & (align-1));
+found:
+        if (addr + size > vend)
+                goto overflow;
 
         va->va_start = addr;
         va->va_end = addr + size;
         va->flags = 0;
         __insert_vmap_area(va);
+        free_vmap_cache = &va->rb_node;
         spin_unlock(&vmap_area_lock);
 
+        BUG_ON(va->va_start & (align-1));
+        BUG_ON(va->va_start < vstart);
+        BUG_ON(va->va_end > vend);
+
         return va;
+
+overflow:
+        spin_unlock(&vmap_area_lock);
+        if (!purged) {
+                purge_vmap_area_lazy();
+                purged = 1;
+                goto retry;
+        }
+        if (printk_ratelimit())
+                printk(KERN_WARNING
+                        "vmap allocation for size %lu failed: "
+                        "use vmalloc=<size> to increase size.\n", size);
+        kfree(va);
+        return ERR_PTR(-EBUSY);
 }
 
 static void rcu_free_va(struct rcu_head *head)
@@ -426,6 +462,22 @@ static void rcu_free_va(struct rcu_head *head)
 static void __free_vmap_area(struct vmap_area *va)
 {
         BUG_ON(RB_EMPTY_NODE(&va->rb_node));
+
+        if (free_vmap_cache) {
+                if (va->va_end < cached_vstart) {
+                        free_vmap_cache = NULL;
+                } else {
+                        struct vmap_area *cache;
+                        cache = rb_entry(free_vmap_cache, struct vmap_area, rb_node);
+                        if (va->va_start <= cache->va_start) {
+                                free_vmap_cache = rb_prev(&va->rb_node);
+                                /*
+                                 * We don't try to update cached_hole_size or
+                                 * cached_align, but it won't go very wrong.
+                                 */
+                        }
+                }
+        }
         rb_erase(&va->rb_node, &vmap_area_root);
         RB_CLEAR_NODE(&va->rb_node);
         list_del_rcu(&va->list);
@@ -1951,8 +2003,6 @@ finished:
  *      should know vmalloc() area is valid and can use memcpy().
  *      This is for routines which have to access vmalloc area without
  *      any informaion, as /dev/kmem.
- *
- *      The caller should guarantee KM_USER1 is not used.
  */
 
 long vwrite(char *buf, char *addr, unsigned long count)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 6771ea70bfe7..060e4c191403 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -514,7 +514,7 @@ static int __remove_mapping(struct address_space *mapping, struct page *page)
 
                 freepage = mapping->a_ops->freepage;
 
-                __remove_from_page_cache(page);
+                __delete_from_page_cache(page);
                 spin_unlock_irq(&mapping->tree_lock);
                 mem_cgroup_uncharge_cache_page(page);
 
@@ -2397,9 +2397,9 @@ loop_again:
                  * cause too much scanning of the lower zones.
                  */
                 for (i = 0; i <= end_zone; i++) {
-                        int compaction;
                         struct zone *zone = pgdat->node_zones + i;
                         int nr_slab;
+                        unsigned long balance_gap;
 
                         if (!populated_zone(zone))
                                 continue;
@@ -2416,11 +2416,20 @@ loop_again:
                         mem_cgroup_soft_limit_reclaim(zone, order, sc.gfp_mask);
 
                         /*
-                         * We put equal pressure on every zone, unless one
-                         * zone has way too many pages free already.
+                         * We put equal pressure on every zone, unless
+                         * one zone has way too many pages free
+                         * already. The "too many pages" is defined
+                         * as the high wmark plus a "gap" where the
+                         * gap is either the low watermark or 1%
+                         * of the zone, whichever is smaller.
                          */
+                        balance_gap = min(low_wmark_pages(zone),
+                                (zone->present_pages +
+                                        KSWAPD_ZONE_BALANCE_GAP_RATIO-1) /
+                                KSWAPD_ZONE_BALANCE_GAP_RATIO);
                         if (!zone_watermark_ok_safe(zone, order,
-                                        8*high_wmark_pages(zone), end_zone, 0))
+                                        high_wmark_pages(zone) + balance_gap,
+                                        end_zone, 0))
                                 shrink_zone(priority, zone, &sc);
                         reclaim_state->reclaimed_slab = 0;
                         nr_slab = shrink_slab(sc.nr_scanned, GFP_KERNEL,
@@ -2428,24 +2437,9 @@ loop_again:
                         sc.nr_reclaimed += reclaim_state->reclaimed_slab;
                         total_scanned += sc.nr_scanned;
 
-                        compaction = 0;
-                        if (order &&
-                            zone_watermark_ok(zone, 0,
-                                               high_wmark_pages(zone),
-                                              end_zone, 0) &&
-                            !zone_watermark_ok(zone, order,
-                                               high_wmark_pages(zone),
-                                               end_zone, 0)) {
-                                compact_zone_order(zone,
-                                                   order,
-                                                   sc.gfp_mask, false,
-                                                   COMPACT_MODE_KSWAPD);
-                                compaction = 1;
-                        }
-
                         if (zone->all_unreclaimable)
                                 continue;
-                        if (!compaction && nr_slab == 0 &&
+                        if (nr_slab == 0 &&
                             !zone_reclaimable(zone))
                                 zone->all_unreclaimable = 1;
                         /*
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 0c3b5048773e..772b39b87d95 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -500,8 +500,12 @@ void refresh_cpu_vm_stats(int cpu)
  * z        = the zone from which the allocation occurred.
  *
  * Must be called with interrupts disabled.
+ *
+ * When __GFP_OTHER_NODE is set assume the node of the preferred
+ * zone is the local node. This is useful for daemons who allocate
+ * memory on behalf of other processes.
  */
-void zone_statistics(struct zone *preferred_zone, struct zone *z)
+void zone_statistics(struct zone *preferred_zone, struct zone *z, gfp_t flags)
 {
         if (z->zone_pgdat == preferred_zone->zone_pgdat) {
                 __inc_zone_state(z, NUMA_HIT);
@@ -509,7 +513,8 @@ void zone_statistics(struct zone *preferred_zone, struct zone *z)
                 __inc_zone_state(z, NUMA_MISS);
                 __inc_zone_state(preferred_zone, NUMA_FOREIGN);
         }
-        if (z->node == numa_node_id())
+        if (z->node == ((flags & __GFP_OTHER_NODE) ?
+                        preferred_zone->node : numa_node_id()))
                 __inc_zone_state(z, NUMA_LOCAL);
         else
                 __inc_zone_state(z, NUMA_OTHER);
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index ae610f046de5..e34ea9e5e28b 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -720,6 +720,7 @@ static int vlan_dev_init(struct net_device *dev)
         dev->fcoe_ddp_xid = real_dev->fcoe_ddp_xid;
 #endif
 
+        dev->needed_headroom = real_dev->needed_headroom;
         if (real_dev->features & NETIF_F_HW_VLAN_TX) {
                 dev->header_ops      = real_dev->header_ops;
                 dev->hard_header_len = real_dev->hard_header_len;
diff --git a/net/9p/client.c b/net/9p/client.c
index 347ec0cd2718..2ccbf04d37df 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -223,7 +223,7 @@ static struct p9_req_t *p9_tag_alloc(struct p9_client *c, u16 tag)
 
         req = &c->reqs[row][col];
         if (!req->tc) {
-                req->wq = kmalloc(sizeof(wait_queue_head_t), GFP_KERNEL);
+                req->wq = kmalloc(sizeof(wait_queue_head_t), GFP_NOFS);
                 if (!req->wq) {
                         printk(KERN_ERR "Couldn't grow tag array\n");
                         return ERR_PTR(-ENOMEM);
@@ -233,17 +233,17 @@ static struct p9_req_t *p9_tag_alloc(struct p9_client *c, u16 tag)
                                 P9_TRANS_PREF_PAYLOAD_SEP) {
                         int alloc_msize = min(c->msize, 4096);
                         req->tc = kmalloc(sizeof(struct p9_fcall)+alloc_msize,
-                                        GFP_KERNEL);
+                                          GFP_NOFS);
                         req->tc->capacity = alloc_msize;
                         req->rc = kmalloc(sizeof(struct p9_fcall)+alloc_msize,
-                                        GFP_KERNEL);
+                                          GFP_NOFS);
                         req->rc->capacity = alloc_msize;
                 } else {
                         req->tc = kmalloc(sizeof(struct p9_fcall)+c->msize,
-                                        GFP_KERNEL);
+                                          GFP_NOFS);
                         req->tc->capacity = c->msize;
                         req->rc = kmalloc(sizeof(struct p9_fcall)+c->msize,
-                                        GFP_KERNEL);
+                                          GFP_NOFS);
                         req->rc->capacity = c->msize;
                 }
                 if ((!req->tc) || (!req->rc)) {
diff --git a/net/9p/protocol.c b/net/9p/protocol.c
index 2ce515b859b3..8a4084fa8b5a 100644
--- a/net/9p/protocol.c
+++ b/net/9p/protocol.c
@@ -205,7 +205,7 @@ p9pdu_vreadf(struct p9_fcall *pdu, int proto_version, const char *fmt,
                                 if (errcode)
                                         break;
 
-                                *sptr = kmalloc(len + 1, GFP_KERNEL);
+                                *sptr = kmalloc(len + 1, GFP_NOFS);
                                 if (*sptr == NULL) {
                                         errcode = -EFAULT;
                                         break;
@@ -273,7 +273,7 @@ p9pdu_vreadf(struct p9_fcall *pdu, int proto_version, const char *fmt,
                                 if (!errcode) {
                                         *wnames =
                                             kmalloc(sizeof(char *) * *nwname,
-                                                    GFP_KERNEL);
+                                                    GFP_NOFS);
                                         if (!*wnames)
                                                 errcode = -ENOMEM;
                                 }
@@ -317,7 +317,7 @@ p9pdu_vreadf(struct p9_fcall *pdu, int proto_version, const char *fmt,
                                         *wqids =
                                             kmalloc(*nwqid *
                                                     sizeof(struct p9_qid),
-                                                    GFP_KERNEL);
+                                                    GFP_NOFS);
                                         if (*wqids == NULL)
                                                 errcode = -ENOMEM;
                                 }
diff --git a/net/9p/trans_common.c b/net/9p/trans_common.c
index d62b9aa58df8..9172ab78fcb0 100644
--- a/net/9p/trans_common.c
+++ b/net/9p/trans_common.c
@@ -41,9 +41,9 @@ EXPORT_SYMBOL(p9_release_req_pages);
 int
 p9_nr_pages(struct p9_req_t *req)
 {
-        int start_page, end_page;
-        start_page =  (unsigned long long)req->tc->pubuf >> PAGE_SHIFT;
-        end_page = ((unsigned long long)req->tc->pubuf + req->tc->pbuf_size +
+        unsigned long start_page, end_page;
+        start_page =  (unsigned long)req->tc->pubuf >> PAGE_SHIFT;
+        end_page = ((unsigned long)req->tc->pubuf + req->tc->pbuf_size +
                         PAGE_SIZE - 1) >> PAGE_SHIFT;
         return end_page - start_page;
 }
@@ -69,8 +69,8 @@ p9_payload_gup(struct p9_req_t *req, size_t *pdata_off, int *pdata_len,
         *pdata_off = (size_t)req->tc->pubuf & (PAGE_SIZE-1);
 
         if (*pdata_off)
-                first_page_bytes = min((PAGE_SIZE - *pdata_off),
-                                req->tc->pbuf_size);
+                first_page_bytes = min(((size_t)PAGE_SIZE - *pdata_off),
+                                       req->tc->pbuf_size);
 
         rpinfo = req->tc->private;
         pdata_mapped_pages = get_user_pages_fast((unsigned long)req->tc->pubuf,
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c
index a30471e51740..aa5672b15eae 100644
--- a/net/9p/trans_fd.c
+++ b/net/9p/trans_fd.c
@@ -350,7 +350,7 @@ static void p9_read_work(struct work_struct *work)
 
                 if (m->req->rc == NULL) {
                         m->req->rc = kmalloc(sizeof(struct p9_fcall) +
-                                                m->client->msize, GFP_KERNEL);
+                                                m->client->msize, GFP_NOFS);
                         if (!m->req->rc) {
                                 m->req = NULL;
                                 err = -ENOMEM;
diff --git a/net/9p/trans_rdma.c b/net/9p/trans_rdma.c
index 29a54ccd213d..150e0c4bbf40 100644
--- a/net/9p/trans_rdma.c
+++ b/net/9p/trans_rdma.c
@@ -424,7 +424,7 @@ static int rdma_request(struct p9_client *client, struct p9_req_t *req)
         struct p9_rdma_context *rpl_context = NULL;
 
         /* Allocate an fcall for the reply */
-        rpl_context = kmalloc(sizeof *rpl_context, GFP_KERNEL);
+        rpl_context = kmalloc(sizeof *rpl_context, GFP_NOFS);
         if (!rpl_context) {
                 err = -ENOMEM;
                 goto err_close;
@@ -437,7 +437,7 @@ static int rdma_request(struct p9_client *client, struct p9_req_t *req)
          */
         if (!req->rc) {
                 req->rc = kmalloc(sizeof(struct p9_fcall)+client->msize,
-                                                                GFP_KERNEL);
+                                  GFP_NOFS);
                 if (req->rc) {
                         req->rc->sdata = (char *) req->rc +
                                                 sizeof(struct p9_fcall);
@@ -468,7 +468,7 @@ static int rdma_request(struct p9_client *client, struct p9_req_t *req)
         req->rc = NULL;
 
         /* Post the request */
-        c = kmalloc(sizeof *c, GFP_KERNEL);
+        c = kmalloc(sizeof *c, GFP_NOFS);
         if (!c) {
                 err = -ENOMEM;
                 goto err_free1;
diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c
index 9b550ed9c711..e8f046b07182 100644
--- a/net/9p/trans_virtio.c
+++ b/net/9p/trans_virtio.c
@@ -43,6 +43,7 @@
 #include <net/9p/client.h>
 #include <net/9p/transport.h>
 #include <linux/scatterlist.h>
+#include <linux/swap.h>
 #include <linux/virtio.h>
 #include <linux/virtio_9p.h>
 #include "trans_common.h"
@@ -51,6 +52,8 @@
 
 /* a single mutex to manage channel initialization and attachment */
 static DEFINE_MUTEX(virtio_9p_lock);
+static DECLARE_WAIT_QUEUE_HEAD(vp_wq);
+static atomic_t vp_pinned = ATOMIC_INIT(0);
 
 /**
  * struct virtio_chan - per-instance transport information
@@ -78,7 +81,10 @@ struct virtio_chan {
         struct virtqueue *vq;
         int ring_bufs_avail;
         wait_queue_head_t *vc_wq;
-
+        /* This is global limit. Since we don't have a global structure,
+         * will be placing it in each channel.
+         */
+        int p9_max_pages;
         /* Scatterlist: can be too big for stack. */
         struct scatterlist sg[VIRTQUEUE_NUM];
 
@@ -141,34 +147,36 @@ static void req_done(struct virtqueue *vq)
 
         P9_DPRINTK(P9_DEBUG_TRANS, ": request done\n");
 
-        do {
+        while (1) {
                 spin_lock_irqsave(&chan->lock, flags);
                 rc = virtqueue_get_buf(chan->vq, &len);
 
-                if (rc != NULL) {
-                        if (!chan->ring_bufs_avail) {
-                                chan->ring_bufs_avail = 1;
-                                wake_up(chan->vc_wq);
-                        }
-                        spin_unlock_irqrestore(&chan->lock, flags);
-                        P9_DPRINTK(P9_DEBUG_TRANS, ": rc %p\n", rc);
-                        P9_DPRINTK(P9_DEBUG_TRANS, ": lookup tag %d\n",
-                                        rc->tag);
-                        req = p9_tag_lookup(chan->client, rc->tag);
-                        req->status = REQ_STATUS_RCVD;
-                        if (req->tc->private) {
-                                struct trans_rpage_info *rp = req->tc->private;
-                                /*Release pages */
-                                p9_release_req_pages(rp);
-                                if (rp->rp_alloc)
-                                        kfree(rp);
-                                req->tc->private = NULL;
-                        }
-                        p9_client_cb(chan->client, req);
-                } else {
+                if (rc == NULL) {
                         spin_unlock_irqrestore(&chan->lock, flags);
+                        break;
+                }
+
+                chan->ring_bufs_avail = 1;
+                spin_unlock_irqrestore(&chan->lock, flags);
+                /* Wakeup if anyone waiting for VirtIO ring space. */
+                wake_up(chan->vc_wq);
+                P9_DPRINTK(P9_DEBUG_TRANS, ": rc %p\n", rc);
+                P9_DPRINTK(P9_DEBUG_TRANS, ": lookup tag %d\n", rc->tag);
+                req = p9_tag_lookup(chan->client, rc->tag);
+                if (req->tc->private) {
+                        struct trans_rpage_info *rp = req->tc->private;
+                        int p = rp->rp_nr_pages;
+                        /*Release pages */
+                        p9_release_req_pages(rp);
+                        atomic_sub(p, &vp_pinned);
+                        wake_up(&vp_wq);
+                        if (rp->rp_alloc)
+                                kfree(rp);
+                        req->tc->private = NULL;
                 }
-        } while (rc != NULL);
+                req->status = REQ_STATUS_RCVD;
+                p9_client_cb(chan->client, req);
+        }
 }
 
 /**
@@ -263,7 +271,6 @@ p9_virtio_request(struct p9_client *client, struct p9_req_t *req)
 
         P9_DPRINTK(P9_DEBUG_TRANS, "9p debug: virtio request\n");
 
-req_retry:
         req->status = REQ_STATUS_SENT;
 
         if (req->tc->pbuf_size && (req->tc->pubuf && P9_IS_USER_CONTEXT)) {
@@ -271,6 +278,14 @@ req_retry:
                 int rpinfo_size = sizeof(struct trans_rpage_info) +
                         sizeof(struct page *) * nr_pages;
 
+                if (atomic_read(&vp_pinned) >= chan->p9_max_pages) {
+                        err = wait_event_interruptible(vp_wq,
+                                atomic_read(&vp_pinned) < chan->p9_max_pages);
+                        if (err  == -ERESTARTSYS)
+                                return err;
+                        P9_DPRINTK(P9_DEBUG_TRANS, "9p: May gup pages now.\n");
+                }
+
                 if (rpinfo_size <= (req->tc->capacity - req->tc->size)) {
                         /* We can use sdata */
                         req->tc->private = req->tc->sdata + req->tc->size;
@@ -293,9 +308,12 @@ req_retry:
                         if (rpinfo->rp_alloc)
                                 kfree(rpinfo);
                         return err;
+                } else {
+                        atomic_add(rpinfo->rp_nr_pages, &vp_pinned);
                 }
         }
 
+req_retry_pinned:
         spin_lock_irqsave(&chan->lock, flags);
 
         /* Handle out VirtIO ring buffers */
@@ -356,7 +374,7 @@ req_retry:
                                 return err;
 
                         P9_DPRINTK(P9_DEBUG_TRANS, "9p:Retry virtio request\n");
-                        goto req_retry;
+                        goto req_retry_pinned;
                 } else {
                         spin_unlock_irqrestore(&chan->lock, flags);
                         P9_DPRINTK(P9_DEBUG_TRANS,
@@ -453,6 +471,8 @@ static int p9_virtio_probe(struct virtio_device *vdev)
         }
         init_waitqueue_head(chan->vc_wq);
         chan->ring_bufs_avail = 1;
+        /* Ceiling limit to avoid denial of service attacks */
+        chan->p9_max_pages = nr_free_buffer_pages()/4;
 
         mutex_lock(&virtio_9p_lock);
         list_add_tail(&chan->chan_list, &virtio_chan_list);
diff --git a/net/9p/util.c b/net/9p/util.c
index e048701a72d2..b84619b5ba22 100644
--- a/net/9p/util.c
+++ b/net/9p/util.c
@@ -92,7 +92,7 @@ int p9_idpool_get(struct p9_idpool *p)
         unsigned long flags;
 
 retry:
-        if (idr_pre_get(&p->pool, GFP_KERNEL) == 0)
+        if (idr_pre_get(&p->pool, GFP_NOFS) == 0)
                 return 0;
 
         spin_lock_irqsave(&p->lock, flags);
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 3d4f4b043406..206e771e82d1 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1051,6 +1051,7 @@ static int atalk_release(struct socket *sock)
 {
         struct sock *sk = sock->sk;
 
+        sock_hold(sk);
         lock_sock(sk);
         if (sk) {
                 sock_orphan(sk);
@@ -1058,6 +1059,8 @@ static int atalk_release(struct socket *sock)
                 atalk_destroy_socket(sk);
         }
         release_sock(sk);
+        sock_put(sk);
+
         return 0;
 }
 
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index f97af5590ba1..008ff6c4eecf 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -739,6 +739,9 @@ static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff *skb,
                 nf_bridge->mask |= BRNF_PKT_TYPE;
         }
 
+        if (br_parse_ip_options(skb))
+                return NF_DROP;
+
         /* The physdev module checks on this */
         nf_bridge->mask |= BRNF_BRIDGED;
         nf_bridge->physoutdev = skb->dev;
diff --git a/net/ceph/armor.c b/net/ceph/armor.c
index eb2a666b0be7..1fc1ee11dfa2 100644
--- a/net/ceph/armor.c
+++ b/net/ceph/armor.c
@@ -78,8 +78,10 @@ int ceph_unarmor(char *dst, const char *src, const char *end)
         while (src < end) {
                 int a, b, c, d;
 
-                if (src < end && src[0] == '\n')
+                if (src[0] == '\n') {
                         src++;
+                        continue;
+                }
                 if (src + 4 > end)
                         return -EINVAL;
                 a = decode_bits(src[0]);
diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index f3e4a13fea0c..95f96ab94bba 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -62,6 +62,7 @@ const char *ceph_msg_type_name(int type)
         case CEPH_MSG_OSD_MAP: return "osd_map";
         case CEPH_MSG_OSD_OP: return "osd_op";
         case CEPH_MSG_OSD_OPREPLY: return "osd_opreply";
+        case CEPH_MSG_WATCH_NOTIFY: return "watch_notify";
         default: return "unknown";
         }
 }
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 3e20a122ffa2..02212ed50852 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -22,10 +22,15 @@
 #define OSD_OPREPLY_FRONT_LEN   512
 
 static const struct ceph_connection_operations osd_con_ops;
-static int __kick_requests(struct ceph_osd_client *osdc,
-                          struct ceph_osd *kickosd);
 
-static void kick_requests(struct ceph_osd_client *osdc, struct ceph_osd *osd);
+static void send_queued(struct ceph_osd_client *osdc);
+static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd);
+static void __register_request(struct ceph_osd_client *osdc,
+                               struct ceph_osd_request *req);
+static void __unregister_linger_request(struct ceph_osd_client *osdc,
+                                        struct ceph_osd_request *req);
+static int __send_request(struct ceph_osd_client *osdc,
+                          struct ceph_osd_request *req);
 
 static int op_needs_trail(int op)
 {
@@ -34,6 +39,7 @@ static int op_needs_trail(int op)
         case CEPH_OSD_OP_SETXATTR:
         case CEPH_OSD_OP_CMPXATTR:
         case CEPH_OSD_OP_CALL:
+        case CEPH_OSD_OP_NOTIFY:
                 return 1;
         default:
                 return 0;
@@ -209,6 +215,8 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
         init_completion(&req->r_completion);
         init_completion(&req->r_safe_completion);
         INIT_LIST_HEAD(&req->r_unsafe_item);
+        INIT_LIST_HEAD(&req->r_linger_item);
+        INIT_LIST_HEAD(&req->r_linger_osd);
         req->r_flags = flags;
 
         WARN_ON((flags & (CEPH_OSD_FLAG_READ|CEPH_OSD_FLAG_WRITE)) == 0);
@@ -315,6 +323,24 @@ static void osd_req_encode_op(struct ceph_osd_request *req,
                 break;
         case CEPH_OSD_OP_STARTSYNC:
                 break;
+        case CEPH_OSD_OP_NOTIFY:
+                {
+                        __le32 prot_ver = cpu_to_le32(src->watch.prot_ver);
+                        __le32 timeout = cpu_to_le32(src->watch.timeout);
+
+                        BUG_ON(!req->r_trail);
+
+                        ceph_pagelist_append(req->r_trail,
+                                                &prot_ver, sizeof(prot_ver));
+                        ceph_pagelist_append(req->r_trail,
+                                                &timeout, sizeof(timeout));
+                }
+        case CEPH_OSD_OP_NOTIFY_ACK:
+        case CEPH_OSD_OP_WATCH:
+                dst->watch.cookie = cpu_to_le64(src->watch.cookie);
+                dst->watch.ver = cpu_to_le64(src->watch.ver);
+                dst->watch.flag = src->watch.flag;
+                break;
         default:
                 pr_err("unrecognized osd opcode %d\n", dst->op);
                 WARN_ON(1);
@@ -529,6 +555,45 @@ __lookup_request_ge(struct ceph_osd_client *osdc,
         return NULL;
 }
 
+/*
+ * Resubmit requests pending on the given osd.
+ */
+static void __kick_osd_requests(struct ceph_osd_client *osdc,
+                                struct ceph_osd *osd)
+{
+        struct ceph_osd_request *req, *nreq;
+        int err;
+
+        dout("__kick_osd_requests osd%d\n", osd->o_osd);
+        err = __reset_osd(osdc, osd);
+        if (err == -EAGAIN)
+                return;
+
+        list_for_each_entry(req, &osd->o_requests, r_osd_item) {
+                list_move(&req->r_req_lru_item, &osdc->req_unsent);
+                dout("requeued %p tid %llu osd%d\n", req, req->r_tid,
+                     osd->o_osd);
+                if (!req->r_linger)
+                        req->r_flags |= CEPH_OSD_FLAG_RETRY;
+        }
+
+        list_for_each_entry_safe(req, nreq, &osd->o_linger_requests,
+                                 r_linger_osd) {
+                __unregister_linger_request(osdc, req);
+                __register_request(osdc, req);
+                list_move(&req->r_req_lru_item, &osdc->req_unsent);
+                dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid,
+                     osd->o_osd);
+        }
+}
+
+static void kick_osd_requests(struct ceph_osd_client *osdc,
+                              struct ceph_osd *kickosd)
+{
+        mutex_lock(&osdc->request_mutex);
+        __kick_osd_requests(osdc, kickosd);
+        mutex_unlock(&osdc->request_mutex);
+}
 
 /*
  * If the osd connection drops, we need to resubmit all requests.
@@ -543,7 +608,8 @@ static void osd_reset(struct ceph_connection *con)
         dout("osd_reset osd%d\n", osd->o_osd);
         osdc = osd->o_osdc;
         down_read(&osdc->map_sem);
-        kick_requests(osdc, osd);
+        kick_osd_requests(osdc, osd);
+        send_queued(osdc);
         up_read(&osdc->map_sem);
 }
 
@@ -561,6 +627,7 @@ static struct ceph_osd *create_osd(struct ceph_osd_client *osdc)
         atomic_set(&osd->o_ref, 1);
         osd->o_osdc = osdc;
         INIT_LIST_HEAD(&osd->o_requests);
+        INIT_LIST_HEAD(&osd->o_linger_requests);
         INIT_LIST_HEAD(&osd->o_osd_lru);
         osd->o_incarnation = 1;
 
@@ -650,7 +717,8 @@ static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd)
         int ret = 0;
 
         dout("__reset_osd %p osd%d\n", osd, osd->o_osd);
-        if (list_empty(&osd->o_requests)) {
+        if (list_empty(&osd->o_requests) &&
+            list_empty(&osd->o_linger_requests)) {
                 __remove_osd(osdc, osd);
         } else if (memcmp(&osdc->osdmap->osd_addr[osd->o_osd],
                           &osd->o_con.peer_addr,
@@ -723,10 +791,9 @@ static void __cancel_osd_timeout(struct ceph_osd_client *osdc)
  * Register request, assign tid.  If this is the first request, set up
  * the timeout event.
  */
-static void register_request(struct ceph_osd_client *osdc,
-                             struct ceph_osd_request *req)
+static void __register_request(struct ceph_osd_client *osdc,
+                               struct ceph_osd_request *req)
 {
-        mutex_lock(&osdc->request_mutex);
         req->r_tid = ++osdc->last_tid;
         req->r_request->hdr.tid = cpu_to_le64(req->r_tid);
         INIT_LIST_HEAD(&req->r_req_lru_item);
@@ -740,6 +807,13 @@ static void register_request(struct ceph_osd_client *osdc,
                 dout(" first request, scheduling timeout\n");
                 __schedule_osd_timeout(osdc);
         }
+}
+
+static void register_request(struct ceph_osd_client *osdc,
+                             struct ceph_osd_request *req)
+{
+        mutex_lock(&osdc->request_mutex);
+        __register_request(osdc, req);
         mutex_unlock(&osdc->request_mutex);
 }
 
@@ -758,9 +832,14 @@ static void __unregister_request(struct ceph_osd_client *osdc,
                 ceph_con_revoke(&req->r_osd->o_con, req->r_request);
 
                 list_del_init(&req->r_osd_item);
-                if (list_empty(&req->r_osd->o_requests))
+                if (list_empty(&req->r_osd->o_requests) &&
+                    list_empty(&req->r_osd->o_linger_requests)) {
+                        dout("moving osd to %p lru\n", req->r_osd);
                         __move_osd_to_lru(osdc, req->r_osd);
-                req->r_osd = NULL;
+                }
+                if (list_empty(&req->r_osd_item) &&
+                    list_empty(&req->r_linger_item))
+                        req->r_osd = NULL;
         }
 
         ceph_osdc_put_request(req);
@@ -781,20 +860,72 @@ static void __cancel_request(struct ceph_osd_request *req)
                 ceph_con_revoke(&req->r_osd->o_con, req->r_request);
                 req->r_sent = 0;
         }
-        list_del_init(&req->r_req_lru_item);
 }
 
+static void __register_linger_request(struct ceph_osd_client *osdc,
+                                    struct ceph_osd_request *req)
+{
+        dout("__register_linger_request %p\n", req);
+        list_add_tail(&req->r_linger_item, &osdc->req_linger);
+        list_add_tail(&req->r_linger_osd, &req->r_osd->o_linger_requests);
+}
+
+static void __unregister_linger_request(struct ceph_osd_client *osdc,
+                                        struct ceph_osd_request *req)
+{
+        dout("__unregister_linger_request %p\n", req);
+        if (req->r_osd) {
+                list_del_init(&req->r_linger_item);
+                list_del_init(&req->r_linger_osd);
+
+                if (list_empty(&req->r_osd->o_requests) &&
+                    list_empty(&req->r_osd->o_linger_requests)) {
+                        dout("moving osd to %p lru\n", req->r_osd);
+                        __move_osd_to_lru(osdc, req->r_osd);
+                }
+                req->r_osd = NULL;
+        }
+}
+
+void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc,
+                                         struct ceph_osd_request *req)
+{
+        mutex_lock(&osdc->request_mutex);
+        if (req->r_linger) {
+                __unregister_linger_request(osdc, req);
+                ceph_osdc_put_request(req);
+        }
+        mutex_unlock(&osdc->request_mutex);
+}
+EXPORT_SYMBOL(ceph_osdc_unregister_linger_request);
+
+void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
+                                  struct ceph_osd_request *req)
+{
+        if (!req->r_linger) {
+                dout("set_request_linger %p\n", req);
+                req->r_linger = 1;
+                /*
+                 * caller is now responsible for calling
+                 * unregister_linger_request
+                 */
+                ceph_osdc_get_request(req);
+        }
+}
+EXPORT_SYMBOL(ceph_osdc_set_request_linger);
+
 /*
  * Pick an osd (the first 'up' osd in the pg), allocate the osd struct
  * (as needed), and set the request r_osd appropriately.  If there is
- * no up osd, set r_osd to NULL.
+ * no up osd, set r_osd to NULL.  Move the request to the appropiate list
+ * (unsent, homeless) or leave on in-flight lru.
  *
  * Return 0 if unchanged, 1 if changed, or negative on error.
  *
  * Caller should hold map_sem for read and request_mutex.
  */
-static int __map_osds(struct ceph_osd_client *osdc,
-                      struct ceph_osd_request *req)
+static int __map_request(struct ceph_osd_client *osdc,
+                         struct ceph_osd_request *req)
 {
         struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base;
         struct ceph_pg pgid;
@@ -802,11 +933,13 @@ static int __map_osds(struct ceph_osd_client *osdc,
         int o = -1, num = 0;
         int err;
 
-        dout("map_osds %p tid %lld\n", req, req->r_tid);
+        dout("map_request %p tid %lld\n", req, req->r_tid);
         err = ceph_calc_object_layout(&reqhead->layout, req->r_oid,
                                       &req->r_file_layout, osdc->osdmap);
-        if (err)
+        if (err) {
+                list_move(&req->r_req_lru_item, &osdc->req_notarget);
                 return err;
+        }
         pgid = reqhead->layout.ol_pgid;
         req->r_pgid = pgid;
 
@@ -823,7 +956,7 @@ static int __map_osds(struct ceph_osd_client *osdc,
             (req->r_osd == NULL && o == -1))
                 return 0;  /* no change */
 
-        dout("map_osds tid %llu pgid %d.%x osd%d (was osd%d)\n",
+        dout("map_request tid %llu pgid %d.%x osd%d (was osd%d)\n",
              req->r_tid, le32_to_cpu(pgid.pool), le16_to_cpu(pgid.ps), o,
              req->r_osd ? req->r_osd->o_osd : -1);
 
@@ -841,10 +974,12 @@ static int __map_osds(struct ceph_osd_client *osdc,
         if (!req->r_osd && o >= 0) {
                 err = -ENOMEM;
                 req->r_osd = create_osd(osdc);
-                if (!req->r_osd)
+                if (!req->r_osd) {
+                        list_move(&req->r_req_lru_item, &osdc->req_notarget);
                         goto out;
+                }
 
-                dout("map_osds osd %p is osd%d\n", req->r_osd, o);
+                dout("map_request osd %p is osd%d\n", req->r_osd, o);
                 req->r_osd->o_osd = o;
                 req->r_osd->o_con.peer_name.num = cpu_to_le64(o);
                 __insert_osd(osdc, req->r_osd);
@@ -855,6 +990,9 @@ static int __map_osds(struct ceph_osd_client *osdc,
         if (req->r_osd) {
                 __remove_osd_from_lru(req->r_osd);
                 list_add(&req->r_osd_item, &req->r_osd->o_requests);
+                list_move(&req->r_req_lru_item, &osdc->req_unsent);
+        } else {
+                list_move(&req->r_req_lru_item, &osdc->req_notarget);
         }
         err = 1;   /* osd or pg changed */
 
@@ -869,16 +1007,6 @@ static int __send_request(struct ceph_osd_client *osdc,
                           struct ceph_osd_request *req)
 {
         struct ceph_osd_request_head *reqhead;
-        int err;
-
-        err = __map_osds(osdc, req);
-        if (err < 0)
-                return err;
-        if (req->r_osd == NULL) {
-                dout("send_request %p no up osds in pg\n", req);
-                ceph_monc_request_next_osdmap(&osdc->client->monc);
-                return 0;
-        }
 
         dout("send_request %p tid %llu to osd%d flags %d\n",
              req, req->r_tid, req->r_osd->o_osd, req->r_flags);
@@ -898,6 +1026,21 @@ static int __send_request(struct ceph_osd_client *osdc,
 }
 
 /*
+ * Send any requests in the queue (req_unsent).
+ */
+static void send_queued(struct ceph_osd_client *osdc)
+{
+        struct ceph_osd_request *req, *tmp;
+
+        dout("send_queued\n");
+        mutex_lock(&osdc->request_mutex);
+        list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) {
+                __send_request(osdc, req);
+        }
+        mutex_unlock(&osdc->request_mutex);
+}
+
+/*
  * Timeout callback, called every N seconds when 1 or more osd
  * requests has been active for more than N seconds.  When this
  * happens, we ping all OSDs with requests who have timed out to
@@ -916,30 +1059,13 @@ static void handle_timeout(struct work_struct *work)
         unsigned long keepalive =
                 osdc->client->options->osd_keepalive_timeout * HZ;
         unsigned long last_stamp = 0;
-        struct rb_node *p;
         struct list_head slow_osds;
-
         dout("timeout\n");
         down_read(&osdc->map_sem);
 
         ceph_monc_request_next_osdmap(&osdc->client->monc);
 
         mutex_lock(&osdc->request_mutex);
-        for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
-                req = rb_entry(p, struct ceph_osd_request, r_node);
-
-                if (req->r_resend) {
-                        int err;
-
-                        dout("osdc resending prev failed %lld\n", req->r_tid);
-                        err = __send_request(osdc, req);
-                        if (err)
-                                dout("osdc failed again on %lld\n", req->r_tid);
-                        else
-                                req->r_resend = false;
-                        continue;
-                }
-        }
 
         /*
          * reset osds that appear to be _really_ unresponsive.  this
@@ -963,7 +1089,7 @@ static void handle_timeout(struct work_struct *work)
                 BUG_ON(!osd);
                 pr_warning(" tid %llu timed out on osd%d, will reset osd\n",
                            req->r_tid, osd->o_osd);
-                __kick_requests(osdc, osd);
+                __kick_osd_requests(osdc, osd);
         }
 
         /*
@@ -991,7 +1117,7 @@ static void handle_timeout(struct work_struct *work)
 
         __schedule_osd_timeout(osdc);
         mutex_unlock(&osdc->request_mutex);
-
+        send_queued(osdc);
         up_read(&osdc->map_sem);
 }
 
@@ -1035,7 +1161,6 @@ static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg,
             numops * sizeof(struct ceph_osd_op))
                 goto bad;
         dout("handle_reply %p tid %llu result %d\n", msg, tid, (int)result);
-
         /* lookup */
         mutex_lock(&osdc->request_mutex);
         req = __lookup_request(osdc, tid);
@@ -1079,6 +1204,9 @@ static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg,
 
         dout("handle_reply tid %llu flags %d\n", tid, flags);
 
+        if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK))
+                __register_linger_request(osdc, req);
+
         /* either this is a read, or we got the safe response */
         if (result < 0 ||
             (flags & CEPH_OSD_FLAG_ONDISK) ||
@@ -1099,6 +1227,7 @@ static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg,
         }
 
 done:
+        dout("req=%p req->r_linger=%d\n", req, req->r_linger);
         ceph_osdc_put_request(req);
         return;
 
@@ -1109,108 +1238,83 @@ bad:
         ceph_msg_dump(msg);
 }
 
-
-static int __kick_requests(struct ceph_osd_client *osdc,
-                          struct ceph_osd *kickosd)
+static void reset_changed_osds(struct ceph_osd_client *osdc)
 {
-        struct ceph_osd_request *req;
         struct rb_node *p, *n;
-        int needmap = 0;
-        int err;
 
-        dout("kick_requests osd%d\n", kickosd ? kickosd->o_osd : -1);
-        if (kickosd) {
-                err = __reset_osd(osdc, kickosd);
-                if (err == -EAGAIN)
-                        return 1;
-        } else {
-                for (p = rb_first(&osdc->osds); p; p = n) {
-                        struct ceph_osd *osd =
-                                rb_entry(p, struct ceph_osd, o_node);
-
-                        n = rb_next(p);
-                        if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) ||
-                            memcmp(&osd->o_con.peer_addr,
-                                   ceph_osd_addr(osdc->osdmap,
-                                                 osd->o_osd),
-                                   sizeof(struct ceph_entity_addr)) != 0)
-                                __reset_osd(osdc, osd);
-                }
+        for (p = rb_first(&osdc->osds); p; p = n) {
+                struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node);
+
+                n = rb_next(p);
+                if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) ||
+                    memcmp(&osd->o_con.peer_addr,
+                           ceph_osd_addr(osdc->osdmap,
+                                         osd->o_osd),
+                           sizeof(struct ceph_entity_addr)) != 0)
+                        __reset_osd(osdc, osd);
         }
+}
+
+/*
+ * Requeue requests whose mapping to an OSD has changed.  If requests map to
+ * no osd, request a new map.
+ *
+ * Caller should hold map_sem for read and request_mutex.
+ */
+static void kick_requests(struct ceph_osd_client *osdc)
+{
+        struct ceph_osd_request *req, *nreq;
+        struct rb_node *p;
+        int needmap = 0;
+        int err;
 
+        dout("kick_requests\n");
+        mutex_lock(&osdc->request_mutex);
         for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
                 req = rb_entry(p, struct ceph_osd_request, r_node);
-
-                if (req->r_resend) {
-                        dout(" r_resend set on tid %llu\n", req->r_tid);
-                        __cancel_request(req);
-                        goto kick;
-                }
-                if (req->r_osd && kickosd == req->r_osd) {
-                        __cancel_request(req);
-                        goto kick;
+                err = __map_request(osdc, req);
+                if (err < 0)
+                        continue;  /* error */
+                if (req->r_osd == NULL) {
+                        dout("%p tid %llu maps to no osd\n", req, req->r_tid);
+                        needmap++;  /* request a newer map */
+                } else if (err > 0) {
+                        dout("%p tid %llu requeued on osd%d\n", req, req->r_tid,
+                             req->r_osd ? req->r_osd->o_osd : -1);
+                        if (!req->r_linger)
+                                req->r_flags |= CEPH_OSD_FLAG_RETRY;
                 }
+        }
+
+        list_for_each_entry_safe(req, nreq, &osdc->req_linger,
+                                 r_linger_item) {
+                dout("linger req=%p req->r_osd=%p\n", req, req->r_osd);
 
-                err = __map_osds(osdc, req);
+                err = __map_request(osdc, req);
                 if (err == 0)
-                        continue;  /* no change */
-                if (err < 0) {
-                        /*
-                         * FIXME: really, we should set the request
-                         * error and fail if this isn't a 'nofail'
-                         * request, but that's a fair bit more
-                         * complicated to do.  So retry!
-                         */
-                        dout(" setting r_resend on %llu\n", req->r_tid);
-                        req->r_resend = true;
-                        continue;
-                }
+                        continue;  /* no change and no osd was specified */
+                if (err < 0)
+                        continue;  /* hrm! */
                 if (req->r_osd == NULL) {
                         dout("tid %llu maps to no valid osd\n", req->r_tid);
                         needmap++;  /* request a newer map */
                         continue;
                 }
 
-kick:
-                dout("kicking %p tid %llu osd%d\n", req, req->r_tid,
+                dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid,
                      req->r_osd ? req->r_osd->o_osd : -1);
-                req->r_flags |= CEPH_OSD_FLAG_RETRY;
-                err = __send_request(osdc, req);
-                if (err) {
-                        dout(" setting r_resend on %llu\n", req->r_tid);
-                        req->r_resend = true;
-                }
+                __unregister_linger_request(osdc, req);
+                __register_request(osdc, req);
         }
-
-        return needmap;
-}
-
-/*
- * Resubmit osd requests whose osd or osd address has changed.  Request
- * a new osd map if osds are down, or we are otherwise unable to determine
- * how to direct a request.
- *
- * Close connections to down osds.
- *
- * If @who is specified, resubmit requests for that specific osd.
- *
- * Caller should hold map_sem for read and request_mutex.
- */
-static void kick_requests(struct ceph_osd_client *osdc,
-                          struct ceph_osd *kickosd)
-{
-        int needmap;
-
-        mutex_lock(&osdc->request_mutex);
-        needmap = __kick_requests(osdc, kickosd);
         mutex_unlock(&osdc->request_mutex);
 
         if (needmap) {
                 dout("%d requests for down osds, need new map\n", needmap);
                 ceph_monc_request_next_osdmap(&osdc->client->monc);
         }
-
 }
+
+
 /*
  * Process updated osd map.
  *
@@ -1263,6 +1367,8 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
                                 ceph_osdmap_destroy(osdc->osdmap);
                                 osdc->osdmap = newmap;
                         }
+                        kick_requests(osdc);
+                        reset_changed_osds(osdc);
                 } else {
                         dout("ignoring incremental map %u len %d\n",
                              epoch, maplen);
@@ -1300,6 +1406,7 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
                         osdc->osdmap = newmap;
                         if (oldmap)
                                 ceph_osdmap_destroy(oldmap);
+                        kick_requests(osdc);
                 }
                 p += maplen;
                 nr_maps--;
@@ -1308,8 +1415,7 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
 done:
         downgrade_write(&osdc->map_sem);
         ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch);
-        if (newmap)
-                kick_requests(osdc, NULL);
+        send_queued(osdc);
         up_read(&osdc->map_sem);
         wake_up_all(&osdc->client->auth_wq);
         return;
@@ -1322,6 +1428,223 @@ bad:
 }
 
 /*
+ * watch/notify callback event infrastructure
+ *
+ * These callbacks are used both for watch and notify operations.
+ */
+static void __release_event(struct kref *kref)
+{
+        struct ceph_osd_event *event =
+                container_of(kref, struct ceph_osd_event, kref);
+
+        dout("__release_event %p\n", event);
+        kfree(event);
+}
+
+static void get_event(struct ceph_osd_event *event)
+{
+        kref_get(&event->kref);
+}
+
+void ceph_osdc_put_event(struct ceph_osd_event *event)
+{
+        kref_put(&event->kref, __release_event);
+}
+EXPORT_SYMBOL(ceph_osdc_put_event);
+
+static void __insert_event(struct ceph_osd_client *osdc,
+                             struct ceph_osd_event *new)
+{
+        struct rb_node **p = &osdc->event_tree.rb_node;
+        struct rb_node *parent = NULL;
+        struct ceph_osd_event *event = NULL;
+
+        while (*p) {
+                parent = *p;
+                event = rb_entry(parent, struct ceph_osd_event, node);
+                if (new->cookie < event->cookie)
+                        p = &(*p)->rb_left;
+                else if (new->cookie > event->cookie)
+                        p = &(*p)->rb_right;
+                else
+                        BUG();
+        }
+
+        rb_link_node(&new->node, parent, p);
+        rb_insert_color(&new->node, &osdc->event_tree);
+}
+
+static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc,
+                                                u64 cookie)
+{
+        struct rb_node **p = &osdc->event_tree.rb_node;
+        struct rb_node *parent = NULL;
+        struct ceph_osd_event *event = NULL;
+
+        while (*p) {
+                parent = *p;
+                event = rb_entry(parent, struct ceph_osd_event, node);
+                if (cookie < event->cookie)
+                        p = &(*p)->rb_left;
+                else if (cookie > event->cookie)
+                        p = &(*p)->rb_right;
+                else
+                        return event;
+        }
+        return NULL;
+}
+
+static void __remove_event(struct ceph_osd_event *event)
+{
+        struct ceph_osd_client *osdc = event->osdc;
+
+        if (!RB_EMPTY_NODE(&event->node)) {
+                dout("__remove_event removed %p\n", event);
+                rb_erase(&event->node, &osdc->event_tree);
+                ceph_osdc_put_event(event);
+        } else {
+                dout("__remove_event didn't remove %p\n", event);
+        }
+}
+
+int ceph_osdc_create_event(struct ceph_osd_client *osdc,
+                           void (*event_cb)(u64, u64, u8, void *),
+                           int one_shot, void *data,
+                           struct ceph_osd_event **pevent)
+{
+        struct ceph_osd_event *event;
+
+        event = kmalloc(sizeof(*event), GFP_NOIO);
+        if (!event)
+                return -ENOMEM;
+
+        dout("create_event %p\n", event);
+        event->cb = event_cb;
+        event->one_shot = one_shot;
+        event->data = data;
+        event->osdc = osdc;
+        INIT_LIST_HEAD(&event->osd_node);
+        kref_init(&event->kref);   /* one ref for us */
+        kref_get(&event->kref);    /* one ref for the caller */
+        init_completion(&event->completion);
+
+        spin_lock(&osdc->event_lock);
+        event->cookie = ++osdc->event_count;
+        __insert_event(osdc, event);
+        spin_unlock(&osdc->event_lock);
+
+        *pevent = event;
+        return 0;
+}
+EXPORT_SYMBOL(ceph_osdc_create_event);
+
+void ceph_osdc_cancel_event(struct ceph_osd_event *event)
+{
+        struct ceph_osd_client *osdc = event->osdc;
+
+        dout("cancel_event %p\n", event);
+        spin_lock(&osdc->event_lock);
+        __remove_event(event);
+        spin_unlock(&osdc->event_lock);
+        ceph_osdc_put_event(event); /* caller's */
+}
+EXPORT_SYMBOL(ceph_osdc_cancel_event);
+
+
+static void do_event_work(struct work_struct *work)
+{
+        struct ceph_osd_event_work *event_work =
+                container_of(work, struct ceph_osd_event_work, work);
+        struct ceph_osd_event *event = event_work->event;
+        u64 ver = event_work->ver;
+        u64 notify_id = event_work->notify_id;
+        u8 opcode = event_work->opcode;
+
+        dout("do_event_work completing %p\n", event);
+        event->cb(ver, notify_id, opcode, event->data);
+        complete(&event->completion);
+        dout("do_event_work completed %p\n", event);
+        ceph_osdc_put_event(event);
+        kfree(event_work);
+}
+
+
+/*
+ * Process osd watch notifications
+ */
+void handle_watch_notify(struct ceph_osd_client *osdc, struct ceph_msg *msg)
+{
+        void *p, *end;
+        u8 proto_ver;
+        u64 cookie, ver, notify_id;
+        u8 opcode;
+        struct ceph_osd_event *event;
+        struct ceph_osd_event_work *event_work;
+
+        p = msg->front.iov_base;
+        end = p + msg->front.iov_len;
+
+        ceph_decode_8_safe(&p, end, proto_ver, bad);
+        ceph_decode_8_safe(&p, end, opcode, bad);
+        ceph_decode_64_safe(&p, end, cookie, bad);
+        ceph_decode_64_safe(&p, end, ver, bad);
+        ceph_decode_64_safe(&p, end, notify_id, bad);
+
+        spin_lock(&osdc->event_lock);
+        event = __find_event(osdc, cookie);
+        if (event) {
+                get_event(event);
+                if (event->one_shot)
+                        __remove_event(event);
+        }
+        spin_unlock(&osdc->event_lock);
+        dout("handle_watch_notify cookie %lld ver %lld event %p\n",
+             cookie, ver, event);
+        if (event) {
+                event_work = kmalloc(sizeof(*event_work), GFP_NOIO);
+                INIT_WORK(&event_work->work, do_event_work);
+                if (!event_work) {
+                        dout("ERROR: could not allocate event_work\n");
+                        goto done_err;
+                }
+                event_work->event = event;
+                event_work->ver = ver;
+                event_work->notify_id = notify_id;
+                event_work->opcode = opcode;
+                if (!queue_work(osdc->notify_wq, &event_work->work)) {
+                        dout("WARNING: failed to queue notify event work\n");
+                        goto done_err;
+                }
+        }
+
+        return;
+
+done_err:
+        complete(&event->completion);
+        ceph_osdc_put_event(event);
+        return;
+
+bad:
+        pr_err("osdc handle_watch_notify corrupt msg\n");
+        return;
+}
+
+int ceph_osdc_wait_event(struct ceph_osd_event *event, unsigned long timeout)
+{
+        int err;
+
+        dout("wait_event %p\n", event);
+        err = wait_for_completion_interruptible_timeout(&event->completion,
+                                                        timeout * HZ);
+        ceph_osdc_put_event(event);
+        if (err > 0)
+                err = 0;
+        dout("wait_event %p returns %d\n", event, err);
+        return err;
+}
+EXPORT_SYMBOL(ceph_osdc_wait_event);
+
+/*
  * Register request, send initial attempt.
  */
 int ceph_osdc_start_request(struct ceph_osd_client *osdc,
@@ -1347,15 +1670,22 @@ int ceph_osdc_start_request(struct ceph_osd_client *osdc,
          * the request still han't been touched yet.
          */
         if (req->r_sent == 0) {
-                rc = __send_request(osdc, req);
-                if (rc) {
-                        if (nofail) {
-                                dout("osdc_start_request failed send, "
-                                     " marking %lld\n", req->r_tid);
-                                req->r_resend = true;
-                                rc = 0;
-                        } else {
-                                __unregister_request(osdc, req);
+                rc = __map_request(osdc, req);
+                if (rc < 0)
+                        return rc;
+                if (req->r_osd == NULL) {
+                        dout("send_request %p no up osds in pg\n", req);
+                        ceph_monc_request_next_osdmap(&osdc->client->monc);
+                } else {
+                        rc = __send_request(osdc, req);
+                        if (rc) {
+                                if (nofail) {
+                                        dout("osdc_start_request failed send, "
+                                             " will retry %lld\n", req->r_tid);
+                                        rc = 0;
+                                } else {
+                                        __unregister_request(osdc, req);
+                                }
                         }
                 }
         }
@@ -1441,9 +1771,15 @@ int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client)
         INIT_LIST_HEAD(&osdc->osd_lru);
         osdc->requests = RB_ROOT;
         INIT_LIST_HEAD(&osdc->req_lru);
+        INIT_LIST_HEAD(&osdc->req_unsent);
+        INIT_LIST_HEAD(&osdc->req_notarget);
+        INIT_LIST_HEAD(&osdc->req_linger);
         osdc->num_requests = 0;
         INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout);
         INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout);
+        spin_lock_init(&osdc->event_lock);
+        osdc->event_tree = RB_ROOT;
+        osdc->event_count = 0;
 
         schedule_delayed_work(&osdc->osds_timeout_work,
            round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ));
@@ -1463,6 +1799,13 @@ int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client)
                                 "osd_op_reply");
         if (err < 0)
                 goto out_msgpool;
+
+        osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify");
+        if (IS_ERR(osdc->notify_wq)) {
+                err = PTR_ERR(osdc->notify_wq);
+                osdc->notify_wq = NULL;
+                goto out_msgpool;
+        }
         return 0;
 
 out_msgpool:
@@ -1476,6 +1819,8 @@ EXPORT_SYMBOL(ceph_osdc_init);
 
 void ceph_osdc_stop(struct ceph_osd_client *osdc)
 {
+        flush_workqueue(osdc->notify_wq);
+        destroy_workqueue(osdc->notify_wq);
         cancel_delayed_work_sync(&osdc->timeout_work);
         cancel_delayed_work_sync(&osdc->osds_timeout_work);
         if (osdc->osdmap) {
@@ -1483,6 +1828,7 @@ void ceph_osdc_stop(struct ceph_osd_client *osdc)
                 osdc->osdmap = NULL;
         }
         remove_old_osds(osdc, 1);
+        WARN_ON(!RB_EMPTY_ROOT(&osdc->osds));
         mempool_destroy(osdc->req_mempool);
         ceph_msgpool_destroy(&osdc->msgpool_op);
         ceph_msgpool_destroy(&osdc->msgpool_op_reply);
@@ -1591,6 +1937,9 @@ static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)
         case CEPH_MSG_OSD_OPREPLY:
                 handle_reply(osdc, msg, con);
                 break;
+        case CEPH_MSG_WATCH_NOTIFY:
+                handle_watch_notify(osdc, msg);
+                break;
 
         default:
                 pr_err("received unknown message type %d %s\n", type,
@@ -1684,6 +2033,7 @@ static struct ceph_msg *alloc_msg(struct ceph_connection *con,
 
         switch (type) {
         case CEPH_MSG_OSD_MAP:
+        case CEPH_MSG_WATCH_NOTIFY:
                 return ceph_msg_new(type, front, GFP_NOFS);
         case CEPH_MSG_OSD_OPREPLY:
                 return get_reply(con, hdr, skip);
diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c
index 36e603c78ce9..706502ff64aa 100644
--- a/net/core/drop_monitor.c
+++ b/net/core/drop_monitor.c
@@ -350,7 +350,7 @@ static int __init init_net_drop_monitor(void)
         struct per_cpu_dm_data *data;
         int cpu, rc;
 
-        printk(KERN_INFO "Initalizing network drop monitor service\n");
+        printk(KERN_INFO "Initializing network drop monitor service\n");
 
         if (sizeof(void *) > 8) {
                 printk(KERN_ERR "Unable to store program counters on this arch, Drop monitor failed\n");
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index c1a71bb738da..a1086fb0c0c7 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -1457,6 +1457,9 @@ static int __ethtool_set_sg(struct net_device *dev, u32 data)
 {
         int err;
 
+        if (!dev->ethtool_ops->set_sg)
+                return -EOPNOTSUPP;
+
         if (data && !(dev->features & NETIF_F_ALL_CSUM))
                 return -EINVAL;
 
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 0c55eaa70e39..aeeece72b72f 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -3761,7 +3761,10 @@ static int __init pktgen_create_thread(int cpu)
         list_add_tail(&t->th_list, &pktgen_threads);
         init_completion(&t->start_done);
 
-        p = kthread_create(pktgen_thread_worker, t, "kpktgend_%d", cpu);
+        p = kthread_create_on_node(pktgen_thread_worker,
+                                   t,
+                                   cpu_to_node(cpu),
+                                   "kpktgend_%d", cpu);
         if (IS_ERR(p)) {
                 pr_err("kernel_thread() failed for cpu %d\n", t->cpu);
                 list_del(&t->th_list);
diff --git a/net/econet/af_econet.c b/net/econet/af_econet.c
index 0c2826337919..116d3fd3d669 100644
--- a/net/econet/af_econet.c
+++ b/net/econet/af_econet.c
@@ -435,10 +435,10 @@ static int econet_sendmsg(struct kiocb *iocb, struct socket *sock,
                 udpdest.sin_addr.s_addr = htonl(network | addr.station);
         }
 
+        memset(&ah, 0, sizeof(ah));
         ah.port = port;
         ah.cb = cb & 0x7f;
         ah.code = 2;            /* magic */
-        ah.pad = 0;
 
         /* tack our header on the front of the iovec */
         size = sizeof(struct aunhdr);
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index b09ed0d080f9..ffcea0d1678e 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -387,7 +387,7 @@ ipt_do_table(struct sk_buff *skb,
                                         verdict = (unsigned)(-v) - 1;
                                         break;
                                 }
-                                if (*stackptr == 0) {
+                                if (*stackptr <= origptr) {
                                         e = get_entry(table_base,
                                             private->underflow[hook]);
                                         pr_debug("Underflow (this is normal) "
@@ -427,10 +427,10 @@ ipt_do_table(struct sk_buff *skb,
                         /* Verdict */
                         break;
         } while (!acpar.hotdrop);
-        xt_info_rdunlock_bh();
         pr_debug("Exiting %s; resetting sp from %u to %u\n",
                  __func__, *stackptr, origptr);
         *stackptr = origptr;
+        xt_info_rdunlock_bh();
 #ifdef DEBUG_ALLOW_ALL
         return NF_ACCEPT;
 #else
diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index 403ca57f6011..d609ac3cb9a4 100644
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -664,8 +664,11 @@ static ssize_t clusterip_proc_write(struct file *file, const char __user *input,
         char buffer[PROC_WRITELEN+1];
         unsigned long nodenum;
 
-        if (copy_from_user(buffer, input, PROC_WRITELEN))
+        if (size > PROC_WRITELEN)
+                return -EIO;
+        if (copy_from_user(buffer, input, size))
                 return -EFAULT;
+        buffer[size] = 0;
 
         if (*buffer == '+') {
                 nodenum = simple_strtoul(buffer+1, NULL, 10);
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index c9598a9067d7..0b2af9b85cec 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -410,7 +410,7 @@ ip6t_do_table(struct sk_buff *skb,
                                         verdict = (unsigned)(-v) - 1;
                                         break;
                                 }
-                                if (*stackptr == 0)
+                                if (*stackptr <= origptr)
                                         e = get_entry(table_base,
                                             private->underflow[hook]);
                                 else
@@ -441,8 +441,8 @@ ip6t_do_table(struct sk_buff *skb,
                         break;
         } while (!acpar.hotdrop);
 
-        xt_info_rdunlock_bh();
         *stackptr = origptr;
+        xt_info_rdunlock_bh();
 
 #ifdef DEBUG_ALLOW_ALL
         return NF_ACCEPT;
diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c
index 7cb65ef79f9c..6dcf5e7d661b 100644
--- a/net/ipv6/sysctl_net_ipv6.c
+++ b/net/ipv6/sysctl_net_ipv6.c
@@ -17,6 +17,16 @@
 
 static struct ctl_table empty[1];
 
+static ctl_table ipv6_static_skeleton[] = {
+        {
+                .procname       = "neigh",
+                .maxlen         = 0,
+                .mode           = 0555,
+                .child          = empty,
+        },
+        { }
+};
+
 static ctl_table ipv6_table_template[] = {
         {
                 .procname       = "route",
@@ -37,12 +47,6 @@ static ctl_table ipv6_table_template[] = {
                 .mode           = 0644,
                 .proc_handler   = proc_dointvec
         },
-        {
-                .procname       = "neigh",
-                .maxlen         = 0,
-                .mode           = 0555,
-                .child          = empty,
-        },
         { }
 };
 
@@ -160,7 +164,7 @@ static struct ctl_table_header *ip6_base;
 
 int ipv6_static_sysctl_register(void)
 {
-        ip6_base = register_sysctl_paths(net_ipv6_ctl_path, empty);
+        ip6_base = register_sysctl_paths(net_ipv6_ctl_path, ipv6_static_skeleton);
         if (ip6_base == NULL)
                 return -ENOMEM;
         return 0;
diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c
index 2731b51923d1..9680226640ef 100644
--- a/net/ipx/af_ipx.c
+++ b/net/ipx/af_ipx.c
@@ -148,7 +148,6 @@ static void ipx_destroy_socket(struct sock *sk)
         ipx_remove_socket(sk);
         skb_queue_purge(&sk->sk_receive_queue);
         sk_refcnt_debug_dec(sk);
-        sock_put(sk);
 }
 
 /*
@@ -1404,6 +1403,7 @@ static int ipx_release(struct socket *sock)
         sk_refcnt_debug_release(sk);
         ipx_destroy_socket(sk);
         release_sock(sk);
+        sock_put(sk);
 out:
         return 0;
 }
diff --git a/net/l2tp/l2tp_eth.c b/net/l2tp/l2tp_eth.c
index 8d9ce0accc98..a8193f52c13c 100644
--- a/net/l2tp/l2tp_eth.c
+++ b/net/l2tp/l2tp_eth.c
@@ -283,7 +283,7 @@ static __net_init int l2tp_eth_init_net(struct net *net)
         return 0;
 }
 
-static __net_initdata struct pernet_operations l2tp_eth_net_ops = {
+static struct pernet_operations l2tp_eth_net_ops = {
         .init = l2tp_eth_init_net,
         .id   = &l2tp_eth_net_id,
         .size = sizeof(struct l2tp_eth_net),
diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c
index 618a615acc9d..d6b48230a540 100644
--- a/net/netfilter/ipset/ip_set_core.c
+++ b/net/netfilter/ipset/ip_set_core.c
@@ -94,16 +94,28 @@ static int
 find_set_type_get(const char *name, u8 family, u8 revision,
                   struct ip_set_type **found)
 {
+        struct ip_set_type *type;
+        int err;
+
         rcu_read_lock();
         *found = find_set_type(name, family, revision);
         if (*found) {
-                int err = !try_module_get((*found)->me);
-                rcu_read_unlock();
-                return err ? -EFAULT : 0;
+                err = !try_module_get((*found)->me) ? -EFAULT : 0;
+                goto unlock;
         }
+        /* Make sure the type is loaded but we don't support the revision */
+        list_for_each_entry_rcu(type, &ip_set_type_list, list)
+                if (STREQ(type->name, name)) {
+                        err = -IPSET_ERR_FIND_TYPE;
+                        goto unlock;
+                }
         rcu_read_unlock();
 
         return try_to_load_type(name);
+
+unlock:
+        rcu_read_unlock();
+        return err;
 }
 
 /* Find a given set type by name and family.
@@ -116,7 +128,7 @@ find_set_type_minmax(const char *name, u8 family, u8 *min, u8 *max)
         struct ip_set_type *type;
         bool found = false;
 
-        *min = *max = 0;
+        *min = 255; *max = 0;
         rcu_read_lock();
         list_for_each_entry_rcu(type, &ip_set_type_list, list)
                 if (STREQ(type->name, name) &&
@@ -124,7 +136,7 @@ find_set_type_minmax(const char *name, u8 family, u8 *min, u8 *max)
                         found = true;
                         if (type->revision < *min)
                                 *min = type->revision;
-                        else if (type->revision > *max)
+                        if (type->revision > *max)
                                 *max = type->revision;
                 }
         rcu_read_unlock();
diff --git a/net/netfilter/ipset/ip_set_hash_ipport.c b/net/netfilter/ipset/ip_set_hash_ipport.c
index adbe787ea5dc..b9214145d357 100644
--- a/net/netfilter/ipset/ip_set_hash_ipport.c
+++ b/net/netfilter/ipset/ip_set_hash_ipport.c
@@ -150,6 +150,7 @@ hash_ipport4_uadt(struct ip_set *set, struct nlattr *tb[],
         struct hash_ipport4_elem data = { };
         u32 ip, ip_to, p, port, port_to;
         u32 timeout = h->timeout;
+        bool with_ports = false;
         int ret;
 
         if (unlikely(!tb[IPSET_ATTR_IP] ||
@@ -172,21 +173,15 @@ hash_ipport4_uadt(struct ip_set *set, struct nlattr *tb[],
 
         if (tb[IPSET_ATTR_PROTO]) {
                 data.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
+                with_ports = ip_set_proto_with_ports(data.proto);
 
                 if (data.proto == 0)
                         return -IPSET_ERR_INVALID_PROTO;
         } else
                 return -IPSET_ERR_MISSING_PROTO;
 
-        switch (data.proto) {
-        case IPPROTO_UDP:
-        case IPPROTO_TCP:
-        case IPPROTO_ICMP:
-                break;
-        default:
+        if (!(with_ports || data.proto == IPPROTO_ICMP))
                 data.port = 0;
-                break;
-        }
 
         if (tb[IPSET_ATTR_TIMEOUT]) {
                 if (!with_timeout(h->timeout))
@@ -195,7 +190,6 @@ hash_ipport4_uadt(struct ip_set *set, struct nlattr *tb[],
         }
 
         if (adt == IPSET_TEST ||
-            !(data.proto == IPPROTO_TCP || data.proto == IPPROTO_UDP) ||
             !(tb[IPSET_ATTR_IP_TO] || tb[IPSET_ATTR_CIDR] ||
               tb[IPSET_ATTR_PORT_TO])) {
                 ret = adtfn(set, &data, timeout);
@@ -219,13 +213,12 @@ hash_ipport4_uadt(struct ip_set *set, struct nlattr *tb[],
         } else
                 ip_to = ip;
 
-        port = ntohs(data.port);
-        if (tb[IPSET_ATTR_PORT_TO]) {
+        port_to = port = ntohs(data.port);
+        if (with_ports && tb[IPSET_ATTR_PORT_TO]) {
                 port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
                 if (port > port_to)
                         swap(port, port_to);
-        } else
-                port_to = port;
+        }
 
         for (; !before(ip_to, ip); ip++)
                 for (p = port; p <= port_to; p++) {
@@ -361,6 +354,7 @@ hash_ipport6_uadt(struct ip_set *set, struct nlattr *tb[],
         struct hash_ipport6_elem data = { };
         u32 port, port_to;
         u32 timeout = h->timeout;
+        bool with_ports = false;
         int ret;
 
         if (unlikely(!tb[IPSET_ATTR_IP] ||
@@ -385,21 +379,15 @@ hash_ipport6_uadt(struct ip_set *set, struct nlattr *tb[],
 
         if (tb[IPSET_ATTR_PROTO]) {
                 data.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
+                with_ports = ip_set_proto_with_ports(data.proto);
 
                 if (data.proto == 0)
                         return -IPSET_ERR_INVALID_PROTO;
         } else
                 return -IPSET_ERR_MISSING_PROTO;
 
-        switch (data.proto) {
-        case IPPROTO_UDP:
-        case IPPROTO_TCP:
-        case IPPROTO_ICMPV6:
-                break;
-        default:
+        if (!(with_ports || data.proto == IPPROTO_ICMPV6))
                 data.port = 0;
-                break;
-        }
 
         if (tb[IPSET_ATTR_TIMEOUT]) {
                 if (!with_timeout(h->timeout))
@@ -407,9 +395,7 @@ hash_ipport6_uadt(struct ip_set *set, struct nlattr *tb[],
                 timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
         }
 
-        if (adt == IPSET_TEST ||
-            !(data.proto == IPPROTO_TCP || data.proto == IPPROTO_UDP) ||
-            !tb[IPSET_ATTR_PORT_TO]) {
+        if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
                 ret = adtfn(set, &data, timeout);
                 return ip_set_eexist(ret, flags) ? 0 : ret;
         }
diff --git a/net/netfilter/ipset/ip_set_hash_ipportip.c b/net/netfilter/ipset/ip_set_hash_ipportip.c
index 22e23abb86c6..4642872df6e1 100644
--- a/net/netfilter/ipset/ip_set_hash_ipportip.c
+++ b/net/netfilter/ipset/ip_set_hash_ipportip.c
@@ -154,6 +154,7 @@ hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[],
         struct hash_ipportip4_elem data = { };
         u32 ip, ip_to, p, port, port_to;
         u32 timeout = h->timeout;
+        bool with_ports = false;
         int ret;
 
         if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
@@ -180,21 +181,15 @@ hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[],
 
         if (tb[IPSET_ATTR_PROTO]) {
                 data.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
+                with_ports = ip_set_proto_with_ports(data.proto);
 
                 if (data.proto == 0)
                         return -IPSET_ERR_INVALID_PROTO;
         } else
                 return -IPSET_ERR_MISSING_PROTO;
 
-        switch (data.proto) {
-        case IPPROTO_UDP:
-        case IPPROTO_TCP:
-        case IPPROTO_ICMP:
-                break;
-        default:
+        if (!(with_ports || data.proto == IPPROTO_ICMP))
                 data.port = 0;
-                break;
-        }
 
         if (tb[IPSET_ATTR_TIMEOUT]) {
                 if (!with_timeout(h->timeout))
@@ -203,7 +198,6 @@ hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[],
         }
 
         if (adt == IPSET_TEST ||
-            !(data.proto == IPPROTO_TCP || data.proto == IPPROTO_UDP) ||
             !(tb[IPSET_ATTR_IP_TO] || tb[IPSET_ATTR_CIDR] ||
               tb[IPSET_ATTR_PORT_TO])) {
                 ret = adtfn(set, &data, timeout);
@@ -227,13 +221,12 @@ hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[],
         } else
                 ip_to = ip;
 
-        port = ntohs(data.port);
-        if (tb[IPSET_ATTR_PORT_TO]) {
+        port_to = port = ntohs(data.port);
+        if (with_ports && tb[IPSET_ATTR_PORT_TO]) {
                 port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
                 if (port > port_to)
                         swap(port, port_to);
-        } else
-                port_to = port;
+        }
 
         for (; !before(ip_to, ip); ip++)
                 for (p = port; p <= port_to; p++) {
@@ -375,6 +368,7 @@ hash_ipportip6_uadt(struct ip_set *set, struct nlattr *tb[],
         struct hash_ipportip6_elem data = { };
         u32 port, port_to;
         u32 timeout = h->timeout;
+        bool with_ports = false;
         int ret;
 
         if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
@@ -403,21 +397,15 @@ hash_ipportip6_uadt(struct ip_set *set, struct nlattr *tb[],
 
         if (tb[IPSET_ATTR_PROTO]) {
                 data.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
+                with_ports = ip_set_proto_with_ports(data.proto);
 
                 if (data.proto == 0)
                         return -IPSET_ERR_INVALID_PROTO;
         } else
                 return -IPSET_ERR_MISSING_PROTO;
 
-        switch (data.proto) {
-        case IPPROTO_UDP:
-        case IPPROTO_TCP:
-        case IPPROTO_ICMPV6:
-                break;
-        default:
+        if (!(with_ports || data.proto == IPPROTO_ICMPV6))
                 data.port = 0;
-                break;
-        }
 
         if (tb[IPSET_ATTR_TIMEOUT]) {
                 if (!with_timeout(h->timeout))
@@ -425,9 +413,7 @@ hash_ipportip6_uadt(struct ip_set *set, struct nlattr *tb[],
                 timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
         }
 
-        if (adt == IPSET_TEST ||
-            !(data.proto == IPPROTO_TCP || data.proto == IPPROTO_UDP) ||
-            !tb[IPSET_ATTR_PORT_TO]) {
+        if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
                 ret = adtfn(set, &data, timeout);
                 return ip_set_eexist(ret, flags) ? 0 : ret;
         }
diff --git a/net/netfilter/ipset/ip_set_hash_ipportnet.c b/net/netfilter/ipset/ip_set_hash_ipportnet.c
index 6033e8b54bbd..2cb84a54b7ad 100644
--- a/net/netfilter/ipset/ip_set_hash_ipportnet.c
+++ b/net/netfilter/ipset/ip_set_hash_ipportnet.c
@@ -174,6 +174,7 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
         struct hash_ipportnet4_elem data = { .cidr = HOST_MASK };
         u32 ip, ip_to, p, port, port_to;
         u32 timeout = h->timeout;
+        bool with_ports = false;
         int ret;
 
         if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
@@ -208,21 +209,15 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 
         if (tb[IPSET_ATTR_PROTO]) {
                 data.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
+                with_ports = ip_set_proto_with_ports(data.proto);
 
                 if (data.proto == 0)
                         return -IPSET_ERR_INVALID_PROTO;
         } else
                 return -IPSET_ERR_MISSING_PROTO;
 
-        switch (data.proto) {
-        case IPPROTO_UDP:
-        case IPPROTO_TCP:
-        case IPPROTO_ICMP:
-                break;
-        default:
+        if (!(with_ports || data.proto == IPPROTO_ICMP))
                 data.port = 0;
-                break;
-        }
 
         if (tb[IPSET_ATTR_TIMEOUT]) {
                 if (!with_timeout(h->timeout))
@@ -231,7 +226,6 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
         }
 
         if (adt == IPSET_TEST ||
-            !(data.proto == IPPROTO_TCP || data.proto == IPPROTO_UDP) ||
             !(tb[IPSET_ATTR_IP_TO] || tb[IPSET_ATTR_CIDR] ||
               tb[IPSET_ATTR_PORT_TO])) {
                 ret = adtfn(set, &data, timeout);
@@ -255,13 +249,12 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
         } else
                 ip_to = ip;
 
-        port = ntohs(data.port);
-        if (tb[IPSET_ATTR_PORT_TO]) {
+        port_to = port = ntohs(data.port);
+        if (with_ports && tb[IPSET_ATTR_PORT_TO]) {
                 port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]);
                 if (port > port_to)
                         swap(port, port_to);
-        } else
-                port_to = port;
+        }
 
         for (; !before(ip_to, ip); ip++)
                 for (p = port; p <= port_to; p++) {
@@ -429,6 +422,7 @@ hash_ipportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
         struct hash_ipportnet6_elem data = { .cidr = HOST_MASK };
         u32 port, port_to;
         u32 timeout = h->timeout;
+        bool with_ports = false;
         int ret;
 
         if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
@@ -465,21 +459,15 @@ hash_ipportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
 
         if (tb[IPSET_ATTR_PROTO]) {
                 data.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
+                with_ports = ip_set_proto_with_ports(data.proto);
 
                 if (data.proto == 0)
                         return -IPSET_ERR_INVALID_PROTO;
         } else
                 return -IPSET_ERR_MISSING_PROTO;
 
-        switch (data.proto) {
-        case IPPROTO_UDP:
-        case IPPROTO_TCP:
-        case IPPROTO_ICMPV6:
-                break;
-        default:
+        if (!(with_ports || data.proto == IPPROTO_ICMPV6))
                 data.port = 0;
-                break;
-        }
 
         if (tb[IPSET_ATTR_TIMEOUT]) {
                 if (!with_timeout(h->timeout))
@@ -487,9 +475,7 @@ hash_ipportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
                 timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
         }
 
-        if (adt == IPSET_TEST ||
-            !(data.proto == IPPROTO_TCP || data.proto == IPPROTO_UDP) ||
-            !tb[IPSET_ATTR_PORT_TO]) {
+        if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
                 ret = adtfn(set, &data, timeout);
                 return ip_set_eexist(ret, flags) ? 0 : ret;
         }
diff --git a/net/netfilter/ipset/ip_set_hash_netport.c b/net/netfilter/ipset/ip_set_hash_netport.c
index 34a165626ee9..8598676f2a05 100644
--- a/net/netfilter/ipset/ip_set_hash_netport.c
+++ b/net/netfilter/ipset/ip_set_hash_netport.c
@@ -170,6 +170,7 @@ hash_netport4_uadt(struct ip_set *set, struct nlattr *tb[],
         struct hash_netport4_elem data = { .cidr = HOST_MASK };
         u32 port, port_to;
         u32 timeout = h->timeout;
+        bool with_ports = false;
         int ret;
 
         if (unlikely(!tb[IPSET_ATTR_IP] ||
@@ -198,21 +199,15 @@ hash_netport4_uadt(struct ip_set *set, struct nlattr *tb[],
 
         if (tb[IPSET_ATTR_PROTO]) {
                 data.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
+                with_ports = ip_set_proto_with_ports(data.proto);
 
                 if (data.proto == 0)
                         return -IPSET_ERR_INVALID_PROTO;
         } else
                 return -IPSET_ERR_MISSING_PROTO;
 
-        switch (data.proto) {
-        case IPPROTO_UDP:
-        case IPPROTO_TCP:
-        case IPPROTO_ICMP:
-                break;
-        default:
+        if (!(with_ports || data.proto == IPPROTO_ICMP))
                 data.port = 0;
-                break;
-        }
 
         if (tb[IPSET_ATTR_TIMEOUT]) {
                 if (!with_timeout(h->timeout))
@@ -220,9 +215,7 @@ hash_netport4_uadt(struct ip_set *set, struct nlattr *tb[],
                 timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
         }
 
-        if (adt == IPSET_TEST ||
-            !(data.proto == IPPROTO_TCP || data.proto == IPPROTO_UDP) ||
-            !tb[IPSET_ATTR_PORT_TO]) {
+        if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
                 ret = adtfn(set, &data, timeout);
                 return ip_set_eexist(ret, flags) ? 0 : ret;
         }
@@ -390,6 +383,7 @@ hash_netport6_uadt(struct ip_set *set, struct nlattr *tb[],
         struct hash_netport6_elem data = { .cidr = HOST_MASK };
         u32 port, port_to;
         u32 timeout = h->timeout;
+        bool with_ports = false;
         int ret;
 
         if (unlikely(!tb[IPSET_ATTR_IP] ||
@@ -418,21 +412,15 @@ hash_netport6_uadt(struct ip_set *set, struct nlattr *tb[],
 
         if (tb[IPSET_ATTR_PROTO]) {
                 data.proto = nla_get_u8(tb[IPSET_ATTR_PROTO]);
+                with_ports = ip_set_proto_with_ports(data.proto);
 
                 if (data.proto == 0)
                         return -IPSET_ERR_INVALID_PROTO;
         } else
                 return -IPSET_ERR_MISSING_PROTO;
 
-        switch (data.proto) {
-        case IPPROTO_UDP:
-        case IPPROTO_TCP:
-        case IPPROTO_ICMPV6:
-                break;
-        default:
+        if (!(with_ports || data.proto == IPPROTO_ICMPV6))
                 data.port = 0;
-                break;
-        }
 
         if (tb[IPSET_ATTR_TIMEOUT]) {
                 if (!with_timeout(h->timeout))
@@ -440,9 +428,7 @@ hash_netport6_uadt(struct ip_set *set, struct nlattr *tb[],
                 timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]);
         }
 
-        if (adt == IPSET_TEST ||
-            !(data.proto == IPPROTO_TCP || data.proto == IPPROTO_UDP) ||
-            !tb[IPSET_ATTR_PORT_TO]) {
+        if (adt == IPSET_TEST || !with_ports || !tb[IPSET_ATTR_PORT_TO]) {
                 ret = adtfn(set, &data, timeout);
                 return ip_set_eexist(ret, flags) ? 0 : ret;
         }
diff --git a/net/netfilter/ipvs/ip_vs_app.c b/net/netfilter/ipvs/ip_vs_app.c
index 5c48ffb60c28..2dc6de13ac18 100644
--- a/net/netfilter/ipvs/ip_vs_app.c
+++ b/net/netfilter/ipvs/ip_vs_app.c
@@ -43,6 +43,8 @@ EXPORT_SYMBOL(register_ip_vs_app);
 EXPORT_SYMBOL(unregister_ip_vs_app);
 EXPORT_SYMBOL(register_ip_vs_app_inc);
 
+static DEFINE_MUTEX(__ip_vs_app_mutex);
+
 /*
  *      Get an ip_vs_app object
  */
@@ -167,14 +169,13 @@ int
 register_ip_vs_app_inc(struct net *net, struct ip_vs_app *app, __u16 proto,
                        __u16 port)
 {
-        struct netns_ipvs *ipvs = net_ipvs(net);
         int result;
 
-        mutex_lock(&ipvs->app_mutex);
+        mutex_lock(&__ip_vs_app_mutex);
 
         result = ip_vs_app_inc_new(net, app, proto, port);
 
-        mutex_unlock(&ipvs->app_mutex);
+        mutex_unlock(&__ip_vs_app_mutex);
 
         return result;
 }
@@ -189,11 +190,11 @@ int register_ip_vs_app(struct net *net, struct ip_vs_app *app)
         /* increase the module use count */
         ip_vs_use_count_inc();
 
-        mutex_lock(&ipvs->app_mutex);
+        mutex_lock(&__ip_vs_app_mutex);
 
         list_add(&app->a_list, &ipvs->app_list);
 
-        mutex_unlock(&ipvs->app_mutex);
+        mutex_unlock(&__ip_vs_app_mutex);
 
         return 0;
 }
@@ -205,10 +206,9 @@ int register_ip_vs_app(struct net *net, struct ip_vs_app *app)
  */
 void unregister_ip_vs_app(struct net *net, struct ip_vs_app *app)
 {
-        struct netns_ipvs *ipvs = net_ipvs(net);
         struct ip_vs_app *inc, *nxt;
 
-        mutex_lock(&ipvs->app_mutex);
+        mutex_lock(&__ip_vs_app_mutex);
 
         list_for_each_entry_safe(inc, nxt, &app->incs_list, a_list) {
                 ip_vs_app_inc_release(net, inc);
@@ -216,7 +216,7 @@ void unregister_ip_vs_app(struct net *net, struct ip_vs_app *app)
 
         list_del(&app->a_list);
 
-        mutex_unlock(&ipvs->app_mutex);
+        mutex_unlock(&__ip_vs_app_mutex);
 
         /* decrease the module use count */
         ip_vs_use_count_dec();
@@ -501,7 +501,7 @@ static void *ip_vs_app_seq_start(struct seq_file *seq, loff_t *pos)
         struct net *net = seq_file_net(seq);
         struct netns_ipvs *ipvs = net_ipvs(net);
 
-        mutex_lock(&ipvs->app_mutex);
+        mutex_lock(&__ip_vs_app_mutex);
 
         return *pos ? ip_vs_app_idx(ipvs, *pos - 1) : SEQ_START_TOKEN;
 }
@@ -535,9 +535,7 @@ static void *ip_vs_app_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 
 static void ip_vs_app_seq_stop(struct seq_file *seq, void *v)
 {
-        struct netns_ipvs *ipvs = net_ipvs(seq_file_net(seq));
-
-        mutex_unlock(&ipvs->app_mutex);
+        mutex_unlock(&__ip_vs_app_mutex);
 }
 
 static int ip_vs_app_seq_show(struct seq_file *seq, void *v)
@@ -583,7 +581,6 @@ static int __net_init __ip_vs_app_init(struct net *net)
         struct netns_ipvs *ipvs = net_ipvs(net);
 
         INIT_LIST_HEAD(&ipvs->app_list);
-        __mutex_init(&ipvs->app_mutex, "ipvs->app_mutex", &ipvs->app_key);
         proc_net_fops_create(net, "ip_vs_app", 0, &ip_vs_app_fops);
         return 0;
 }
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index b799cea31f95..33733c8872e7 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -3605,7 +3605,7 @@ int __net_init __ip_vs_control_init(struct net *net)
 
         /* procfs stats */
         ipvs->tot_stats.cpustats = alloc_percpu(struct ip_vs_cpu_stats);
-        if (ipvs->tot_stats.cpustats) {
+        if (!ipvs->tot_stats.cpustats) {
                 pr_err("%s(): alloc_percpu.\n", __func__);
                 return -ENOMEM;
         }
diff --git a/net/socket.c b/net/socket.c
index 937d0fcf74bc..5212447c86e7 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2588,23 +2588,123 @@ static int dev_ifconf(struct net *net, struct compat_ifconf __user *uifc32)
 
 static int ethtool_ioctl(struct net *net, struct compat_ifreq __user *ifr32)
 {
+        struct compat_ethtool_rxnfc __user *compat_rxnfc;
+        bool convert_in = false, convert_out = false;
+        size_t buf_size = ALIGN(sizeof(struct ifreq), 8);
+        struct ethtool_rxnfc __user *rxnfc;
         struct ifreq __user *ifr;
+        u32 rule_cnt = 0, actual_rule_cnt;
+        u32 ethcmd;
         u32 data;
-        void __user *datap;
+        int ret;
+
+        if (get_user(data, &ifr32->ifr_ifru.ifru_data))
+                return -EFAULT;
 
-        ifr = compat_alloc_user_space(sizeof(*ifr));
+        compat_rxnfc = compat_ptr(data);
 
-        if (copy_in_user(&ifr->ifr_name, &ifr32->ifr_name, IFNAMSIZ))
+        if (get_user(ethcmd, &compat_rxnfc->cmd))
                 return -EFAULT;
 
-        if (get_user(data, &ifr32->ifr_ifru.ifru_data))
+        /* Most ethtool structures are defined without padding.
+         * Unfortunately struct ethtool_rxnfc is an exception.
+         */
+        switch (ethcmd) {
+        default:
+                break;
+        case ETHTOOL_GRXCLSRLALL:
+                /* Buffer size is variable */
+                if (get_user(rule_cnt, &compat_rxnfc->rule_cnt))
+                        return -EFAULT;
+                if (rule_cnt > KMALLOC_MAX_SIZE / sizeof(u32))
+                        return -ENOMEM;
+                buf_size += rule_cnt * sizeof(u32);
+                /* fall through */
+        case ETHTOOL_GRXRINGS:
+        case ETHTOOL_GRXCLSRLCNT:
+        case ETHTOOL_GRXCLSRULE:
+                convert_out = true;
+                /* fall through */
+        case ETHTOOL_SRXCLSRLDEL:
+        case ETHTOOL_SRXCLSRLINS:
+                buf_size += sizeof(struct ethtool_rxnfc);
+                convert_in = true;
+                break;
+        }
+
+        ifr = compat_alloc_user_space(buf_size);
+        rxnfc = (void *)ifr + ALIGN(sizeof(struct ifreq), 8);
+
+        if (copy_in_user(&ifr->ifr_name, &ifr32->ifr_name, IFNAMSIZ))
                 return -EFAULT;
 
-        datap = compat_ptr(data);
-        if (put_user(datap, &ifr->ifr_ifru.ifru_data))
+        if (put_user(convert_in ? rxnfc : compat_ptr(data),
+                     &ifr->ifr_ifru.ifru_data))
                 return -EFAULT;
 
-        return dev_ioctl(net, SIOCETHTOOL, ifr);
+        if (convert_in) {
+                /* We expect there to be holes between fs.m_u and
+                 * fs.ring_cookie and at the end of fs, but nowhere else.
+                 */
+                BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_u) +
+                             sizeof(compat_rxnfc->fs.m_u) !=
+                             offsetof(struct ethtool_rxnfc, fs.m_u) +
+                             sizeof(rxnfc->fs.m_u));
+                BUILD_BUG_ON(
+                        offsetof(struct compat_ethtool_rxnfc, fs.location) -
+                        offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) !=
+                        offsetof(struct ethtool_rxnfc, fs.location) -
+                        offsetof(struct ethtool_rxnfc, fs.ring_cookie));
+
+                if (copy_in_user(rxnfc, compat_rxnfc,
+                                 (void *)(&rxnfc->fs.m_u + 1) -
+                                 (void *)rxnfc) ||
+                    copy_in_user(&rxnfc->fs.ring_cookie,
+                                 &compat_rxnfc->fs.ring_cookie,
+                                 (void *)(&rxnfc->fs.location + 1) -
+                                 (void *)&rxnfc->fs.ring_cookie) ||
+                    copy_in_user(&rxnfc->rule_cnt, &compat_rxnfc->rule_cnt,
+                                 sizeof(rxnfc->rule_cnt)))
+                        return -EFAULT;
+        }
+
+        ret = dev_ioctl(net, SIOCETHTOOL, ifr);
+        if (ret)
+                return ret;
+
+        if (convert_out) {
+                if (copy_in_user(compat_rxnfc, rxnfc,
+                                 (const void *)(&rxnfc->fs.m_u + 1) -
+                                 (const void *)rxnfc) ||
+                    copy_in_user(&compat_rxnfc->fs.ring_cookie,
+                                 &rxnfc->fs.ring_cookie,
+                                 (const void *)(&rxnfc->fs.location + 1) -
+                                 (const void *)&rxnfc->fs.ring_cookie) ||
+                    copy_in_user(&compat_rxnfc->rule_cnt, &rxnfc->rule_cnt,
+                                 sizeof(rxnfc->rule_cnt)))
+                        return -EFAULT;
+
+                if (ethcmd == ETHTOOL_GRXCLSRLALL) {
+                        /* As an optimisation, we only copy the actual
+                         * number of rules that the underlying
+                         * function returned.  Since Mallory might
+                         * change the rule count in user memory, we
+                         * check that it is less than the rule count
+                         * originally given (as the user buffer size),
+                         * which has been range-checked.
+                         */
+                        if (get_user(actual_rule_cnt, &rxnfc->rule_cnt))
+                                return -EFAULT;
+                        if (actual_rule_cnt < rule_cnt)
+                                rule_cnt = actual_rule_cnt;
+                        if (copy_in_user(&compat_rxnfc->rule_locs[0],
+                                         &rxnfc->rule_locs[0],
+                                         rule_cnt * sizeof(u32)))
+                                return -EFAULT;
+                }
+        }
+
+        return 0;
 }
 
 static int compat_siocwandev(struct net *net, struct compat_ifreq __user *uifr32)
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index d575f0534868..f83a3d1da81b 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1907,7 +1907,7 @@ int xfrm_state_mtu(struct xfrm_state *x, int mtu)
         return res;
 }
 
-int xfrm_init_state(struct xfrm_state *x)
+int __xfrm_init_state(struct xfrm_state *x, bool init_replay)
 {
         struct xfrm_state_afinfo *afinfo;
         struct xfrm_mode *inner_mode;
@@ -1980,12 +1980,25 @@ int xfrm_init_state(struct xfrm_state *x)
         if (x->outer_mode == NULL)
                 goto error;
 
+        if (init_replay) {
+                err = xfrm_init_replay(x);
+                if (err)
+                        goto error;
+        }
+
         x->km.state = XFRM_STATE_VALID;
 
 error:
         return err;
 }
 
+EXPORT_SYMBOL(__xfrm_init_state);
+
+int xfrm_init_state(struct xfrm_state *x)
+{
+        return __xfrm_init_state(x, true);
+}
+
 EXPORT_SYMBOL(xfrm_init_state);
 
 int __net_init xfrm_state_init(struct net *net)
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 706385ae3e4b..fc152d28753c 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -511,7 +511,7 @@ static struct xfrm_state *xfrm_state_construct(struct net *net,
 
         xfrm_mark_get(attrs, &x->mark);
 
-        err = xfrm_init_state(x);
+        err = __xfrm_init_state(x, false);
         if (err)
                 goto error;
 
diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter
index 6501a50e17f0..6129020c41a9 100755
--- a/scripts/bloat-o-meter
+++ b/scripts/bloat-o-meter
@@ -17,7 +17,9 @@ def getsizes(file):
     sym = {}
     for l in os.popen("nm --size-sort " + file).readlines():
         size, type, name = l[:-1].split()
-        if type in "tTdDbB":
+        if type in "tTdDbBrR":
+            # strip generated symbols
+            if name[:6] == "__mod_": continue
             # function names begin with '.' on 64-bit powerpc
             if "." in name[1:]: name = "static." + name.split(".")[0]
             sym[name] = sym.get(name, 0) + int(size, 16)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 58848e3e392c..8f9e394298cd 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2804,9 +2804,9 @@ sub process {
                         WARN("consider using a completion\n" . $herecurr);
 
                 }
-# recommend strict_strto* over simple_strto*
+# recommend kstrto* over simple_strto*
                 if ($line =~ /\bsimple_(strto.*?)\s*\(/) {
-                        WARN("consider using strict_$1 in preference to simple_$1\n" . $herecurr);
+                        WARN("consider using kstrto* in preference to simple_$1\n" . $herecurr);
                 }
 # check for __initcall(), use device_initcall() explicitly please
                 if ($line =~ /^.\s*__initcall\s*\(/) {
@@ -2902,6 +2902,11 @@ sub process {
                     $line =~ /DEVICE_ATTR.*S_IWUGO/ ) {
                         WARN("Exporting world writable files is usually an error. Consider more restrictive permissions.\n" . $herecurr);
                 }
+
+                # Check for memset with swapped arguments
+                if ($line =~ /memset.*\,(\ |)(0x|)0(\ |0|)\);/) {
+                        ERROR("memset size is 3rd argument, not the second.\n" . $herecurr);
+                }
         }
 
         # If we have no input at all, then there is nothing to report on
@@ -2944,6 +2949,7 @@ sub process {
                 if ($rpt_cleaners) {
                         print "NOTE: whitespace errors detected, you may wish to use scripts/cleanpatch or\n";
                         print "      scripts/cleanfile\n\n";
+                        $rpt_cleaners = 0;
                 }
         }
 
diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 139e0fff8e31..d29a8d75cb22 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -420,6 +420,14 @@ foreach my $file (@ARGV) {
 
         open(my $patch, "< $file")
             or die "$P: Can't open $file: $!\n";
+
+        # We can check arbitrary information before the patch
+        # like the commit message, mail headers, etc...
+        # This allows us to match arbitrary keywords against any part
+        # of a git format-patch generated file (subject tags, etc...)
+
+        my $patch_prefix = "";                  #Parsing the intro
+
         while (<$patch>) {
             my $patch_line = $_;
             if (m/^\+\+\+\s+(\S+)/) {
@@ -428,13 +436,14 @@ foreach my $file (@ARGV) {
                 $filename =~ s@\n@@;
                 $lastfile = $filename;
                 push(@files, $filename);
+                $patch_prefix = "^[+-].*";      #Now parsing the actual patch
             } elsif (m/^\@\@ -(\d+),(\d+)/) {
                 if ($email_git_blame) {
                     push(@range, "$lastfile:$1:$2");
                 }
             } elsif ($keywords) {
                 foreach my $line (keys %keyword_hash) {
-                    if ($patch_line =~ m/^[+-].*$keyword_hash{$line}/x) {
+                    if ($patch_line =~ m/${patch_prefix}$keyword_hash{$line}/x) {
                         push(@keyword_tvi, $line);
                     }
                 }
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index f1a03f223495..5d582de91c19 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -1265,6 +1265,7 @@ static void alc_auto_init_amp(struct hda_codec *codec, int type)
                 case 0x10ec0660:
                 case 0x10ec0662:
                 case 0x10ec0663:
+                case 0x10ec0665:
                 case 0x10ec0862:
                 case 0x10ec0889:
                         set_eapd(codec, 0x14, 1);
@@ -4240,6 +4241,7 @@ static void alc_power_eapd(struct hda_codec *codec)
         case 0x10ec0660:
         case 0x10ec0662:
         case 0x10ec0663:
+        case 0x10ec0665:
         case 0x10ec0862:
         case 0x10ec0889:
                 set_eapd(codec, 0x14, 0);
@@ -16006,9 +16008,12 @@ static int alc861_auto_create_multi_out_ctls(struct hda_codec *codec,
                                 return err;
                 } else {
                         const char *name = pfx;
-                        if (!name)
+                        int index = i;
+                        if (!name) {
                                 name = chname[i];
-                        err = __alc861_create_out_sw(codec, name, nid, i, 3);
+                                index = 0;
+                        }
+                        err = __alc861_create_out_sw(codec, name, nid, index, 3);
                         if (err < 0)
                                 return err;
                 }
@@ -17159,16 +17164,19 @@ static int alc861vd_auto_create_multi_out_ctls(struct alc_spec *spec,
                                 return err;
                 } else {
                         const char *name = pfx;
-                        if (!name)
+                        int index = i;
+                        if (!name) {
                                 name = chname[i];
+                                index = 0;
+                        }
                         err = __add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL,
-                                                name, i,
+                                                name, index,
                                           HDA_COMPOSE_AMP_VAL(nid_v, 3, 0,
                                                               HDA_OUTPUT));
                         if (err < 0)
                                 return err;
                         err = __add_pb_sw_ctrl(spec, ALC_CTL_BIND_MUTE,
-                                               name, i,
+                                               name, index,
                                           HDA_COMPOSE_AMP_VAL(nid_s, 3, 2,
                                                               HDA_INPUT));
                         if (err < 0)
@@ -19217,12 +19225,15 @@ static int alc662_auto_create_multi_out_ctls(struct hda_codec *codec,
                                 return err;
                 } else {
                         const char *name = pfx;
-                        if (!name)
+                        int index = i;
+                        if (!name) {
                                 name = chname[i];
-                        err = __alc662_add_vol_ctl(spec, name, nid, i, 3);
+                                index = 0;
+                        }
+                        err = __alc662_add_vol_ctl(spec, name, nid, index, 3);
                         if (err < 0)
                                 return err;
-                        err = __alc662_add_sw_ctl(spec, name, mix, i, 3);
+                        err = __alc662_add_sw_ctl(spec, name, mix, index, 3);
                         if (err < 0)
                                 return err;
                 }
diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c
index 63b0054200a8..1371b57c11e8 100644
--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -159,6 +159,7 @@ struct via_spec {
 #endif
 };
 
+static enum VIA_HDA_CODEC get_codec_type(struct hda_codec *codec);
 static struct via_spec * via_new_spec(struct hda_codec *codec)
 {
         struct via_spec *spec;
@@ -169,6 +170,10 @@ static struct via_spec * via_new_spec(struct hda_codec *codec)
 
         codec->spec = spec;
         spec->codec = codec;
+        spec->codec_type = get_codec_type(codec);
+        /* VT1708BCE & VT1708S are almost same */
+        if (spec->codec_type == VT1708BCE)
+                spec->codec_type = VT1708S;
         return spec;
 }
 
@@ -1101,6 +1106,7 @@ static int via_mux_enum_put(struct snd_kcontrol *kcontrol,
         struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
         struct via_spec *spec = codec->spec;
         unsigned int adc_idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
+        int ret;
 
         if (!spec->mux_nids[adc_idx])
                 return -EINVAL;
@@ -1109,12 +1115,14 @@ static int via_mux_enum_put(struct snd_kcontrol *kcontrol,
                                AC_VERB_GET_POWER_STATE, 0x00) != AC_PWRST_D0)
                 snd_hda_codec_write(codec, spec->mux_nids[adc_idx], 0,
                                     AC_VERB_SET_POWER_STATE, AC_PWRST_D0);
-        /* update jack power state */
-        set_jack_power_state(codec);
 
-        return snd_hda_input_mux_put(codec, spec->input_mux, ucontrol,
+        ret = snd_hda_input_mux_put(codec, spec->input_mux, ucontrol,
                                      spec->mux_nids[adc_idx],
                                      &spec->cur_mux[adc_idx]);
+        /* update jack power state */
+        set_jack_power_state(codec);
+
+        return ret;
 }
 
 static int via_independent_hp_info(struct snd_kcontrol *kcontrol,
@@ -1188,8 +1196,16 @@ static int via_independent_hp_put(struct snd_kcontrol *kcontrol,
         /* Get Independent Mode index of headphone pin widget */
         spec->hp_independent_mode = spec->hp_independent_mode_index == pinsel
                 ? 1 : 0;
-        snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CONNECT_SEL, pinsel);
+        if (spec->codec_type == VT1718S)
+                snd_hda_codec_write(codec, nid, 0,
+                                    AC_VERB_SET_CONNECT_SEL, pinsel ? 2 : 0);
+        else
+                snd_hda_codec_write(codec, nid, 0,
+                                    AC_VERB_SET_CONNECT_SEL, pinsel);
 
+        if (spec->codec_type == VT1812)
+                snd_hda_codec_write(codec, 0x35, 0,
+                                    AC_VERB_SET_CONNECT_SEL, pinsel);
         if (spec->multiout.hp_nid && spec->multiout.hp_nid
             != spec->multiout.dac_nids[HDA_FRONT])
                 snd_hda_codec_setup_stream(codec, spec->multiout.hp_nid,
@@ -1208,6 +1224,8 @@ static int via_independent_hp_put(struct snd_kcontrol *kcontrol,
                 activate_ctl(codec, "Headphone Playback Switch",
                              spec->hp_independent_mode);
         }
+        /* update jack power state */
+        set_jack_power_state(codec);
         return 0;
 }
 
@@ -1248,9 +1266,12 @@ static int via_hp_build(struct hda_codec *codec)
                 break;
         }
 
-        nums = snd_hda_get_connections(codec, nid, conn, HDA_MAX_CONNECTIONS);
-        if (nums <= 1)
-                return 0;
+        if (spec->codec_type != VT1708) {
+                nums = snd_hda_get_connections(codec, nid,
+                                               conn, HDA_MAX_CONNECTIONS);
+                if (nums <= 1)
+                        return 0;
+        }
 
         knew = via_clone_control(spec, &via_hp_mixer[0]);
         if (knew == NULL)
@@ -1310,6 +1331,11 @@ static void mute_aa_path(struct hda_codec *codec, int mute)
                 start_idx = 2;
                 end_idx = 4;
                 break;
+        case VT1718S:
+                nid_mixer = 0x21;
+                start_idx = 1;
+                end_idx = 3;
+                break;
         default:
                 return;
         }
@@ -2185,10 +2211,6 @@ static int via_init(struct hda_codec *codec)
         for (i = 0; i < spec->num_iverbs; i++)
                 snd_hda_sequence_write(codec, spec->init_verbs[i]);
 
-        spec->codec_type = get_codec_type(codec);
-        if (spec->codec_type == VT1708BCE)
-                spec->codec_type = VT1708S; /* VT1708BCE & VT1708S are almost
-                                               same */
         /* Lydia Add for EAPD enable */
         if (!spec->dig_in_nid) { /* No Digital In connection */
                 if (spec->dig_in_pin) {
@@ -2438,7 +2460,14 @@ static int vt_auto_create_analog_input_ctls(struct hda_codec *codec,
                 else
                         type_idx = 0;
                 label = hda_get_autocfg_input_label(codec, cfg, i);
-                err = via_new_analog_input(spec, label, type_idx, idx, cap_nid);
+                if (spec->codec_type == VT1708S ||
+                    spec->codec_type == VT1702 ||
+                    spec->codec_type == VT1716S)
+                        err = via_new_analog_input(spec, label, type_idx,
+                                                   idx+1, cap_nid);
+                else
+                        err = via_new_analog_input(spec, label, type_idx,
+                                                   idx, cap_nid);
                 if (err < 0)
                         return err;
                 snd_hda_add_imux_item(imux, label, idx, NULL);
@@ -4147,6 +4176,11 @@ static int patch_vt1708S(struct hda_codec *codec)
                 spec->stream_name_analog = "VT1708BCE Analog";
                 spec->stream_name_digital = "VT1708BCE Digital";
         }
+        /* correct names for VT1818S */
+        if (codec->vendor_id == 0x11060440) {
+                spec->stream_name_analog = "VT1818S Analog";
+                spec->stream_name_digital = "VT1818S Digital";
+        }
         return 0;
 }
 
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
index 1f7217f703ee..ff29380c9ed3 100644
--- a/sound/soc/codecs/sgtl5000.c
+++ b/sound/soc/codecs/sgtl5000.c
@@ -772,6 +772,7 @@ static int sgtl5000_pcm_hw_params(struct snd_pcm_substream *substream,
         return 0;
 }
 
+#ifdef CONFIG_REGULATOR
 static int ldo_regulator_is_enabled(struct regulator_dev *dev)
 {
         struct ldo_regulator *ldo = rdev_get_drvdata(dev);
@@ -901,6 +902,19 @@ static int ldo_regulator_remove(struct snd_soc_codec *codec)
 
         return 0;
 }
+#else
+static int ldo_regulator_register(struct snd_soc_codec *codec,
+                                struct regulator_init_data *init_data,
+                                int voltage)
+{
+        return -EINVAL;
+}
+
+static int ldo_regulator_remove(struct snd_soc_codec *codec)
+{
+        return 0;
+}
+#endif
 
 /*
  * set dac bias
diff --git a/sound/soc/codecs/uda134x.c b/sound/soc/codecs/uda134x.c
index e76847a9438b..48ffd406a71d 100644
--- a/sound/soc/codecs/uda134x.c
+++ b/sound/soc/codecs/uda134x.c
@@ -486,7 +486,8 @@ static struct snd_soc_dai_driver uda134x_dai = {
 static int uda134x_soc_probe(struct snd_soc_codec *codec)
 {
         struct uda134x_priv *uda134x;
-        struct uda134x_platform_data *pd = dev_get_drvdata(codec->card->dev);
+        struct uda134x_platform_data *pd = codec->card->dev->platform_data;
+
         int ret;
 
         printk(KERN_INFO "UDA134X SoC Audio Codec\n");
diff --git a/sound/soc/samsung/s3c24xx_uda134x.c b/sound/soc/samsung/s3c24xx_uda134x.c
index 3cb700751078..dc9d551f6788 100644
--- a/sound/soc/samsung/s3c24xx_uda134x.c
+++ b/sound/soc/samsung/s3c24xx_uda134x.c
@@ -219,7 +219,7 @@ static struct snd_soc_ops s3c24xx_uda134x_ops = {
 static struct snd_soc_dai_link s3c24xx_uda134x_dai_link = {
         .name = "UDA134X",
         .stream_name = "UDA134X",
-        .codec_name = "uda134x-hifi",
+        .codec_name = "uda134x-codec",
         .codec_dai_name = "uda134x-hifi",
         .cpu_dai_name = "s3c24xx-iis",
         .ops = &s3c24xx_uda134x_ops,
@@ -314,6 +314,7 @@ static int s3c24xx_uda134x_probe(struct platform_device *pdev)
 
         platform_set_drvdata(s3c24xx_uda134x_snd_device,
                              &snd_soc_s3c24xx_uda134x);
+        platform_device_add_data(s3c24xx_uda134x_snd_device, &s3c24xx_uda134x, sizeof(s3c24xx_uda134x));
         ret = platform_device_add(s3c24xx_uda134x_snd_device);
         if (ret) {
                 printk(KERN_ERR "S3C24XX_UDA134X SoC Audio: Unable to add\n");
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 17efacdb248a..4dda58926bc5 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -259,8 +259,6 @@ static ssize_t codec_reg_write_file(struct file *file,
         while (*start == ' ')
                 start++;
         reg = simple_strtoul(start, &start, 16);
-        if ((reg >= codec->driver->reg_cache_size) || (reg % step))
-                return -EINVAL;
         while (*start == ' ')
                 start++;
         if (strict_strtoul(start, 16, &value))
diff --git a/sound/sound_firmware.c b/sound/sound_firmware.c
index 340a0bc5303e..7e96249536b4 100644
--- a/sound/sound_firmware.c
+++ b/sound/sound_firmware.c
@@ -19,7 +19,7 @@ static int do_mod_firmware_load(const char *fn, char **fp)
                 printk(KERN_INFO "Unable to load '%s'.\n", fn);
                 return 0;
         }
-        l = filp->f_path.dentry->d_inode->i_size;
+        l = i_size_read(filp->f_path.dentry->d_inode);
         if (l <= 0 || l > 131072)
         {
                 printk(KERN_INFO "Invalid firmware '%s'\n", fn);
diff --git a/sound/usb/card.c b/sound/usb/card.c
index 40722f8711ad..a90662af2d6b 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -41,6 +41,7 @@
 #include <linux/list.h>
 #include <linux/slab.h>
 #include <linux/string.h>
+#include <linux/ctype.h>
 #include <linux/usb.h>
 #include <linux/moduleparam.h>
 #include <linux/mutex.h>
@@ -283,6 +284,15 @@ static int snd_usb_audio_dev_free(struct snd_device *device)
         return snd_usb_audio_free(chip);
 }
 
+static void remove_trailing_spaces(char *str)
+{
+        char *p;
+
+        if (!*str)
+                return;
+        for (p = str + strlen(str) - 1; p >= str && isspace(*p); p--)
+                *p = 0;
+}
 
 /*
  * create a chip instance and set its names.
@@ -351,7 +361,7 @@ static int snd_usb_audio_create(struct usb_device *dev, int idx,
         snd_component_add(card, component);
 
         /* retrieve the device string as shortname */
-        if (quirk && quirk->product_name) {
+        if (quirk && quirk->product_name && *quirk->product_name) {
                 strlcpy(card->shortname, quirk->product_name, sizeof(card->shortname));
         } else {
                 if (!dev->descriptor.iProduct ||
@@ -363,9 +373,10 @@ static int snd_usb_audio_create(struct usb_device *dev, int idx,
                                 USB_ID_PRODUCT(chip->usb_id));
                 }
         }
+        remove_trailing_spaces(card->shortname);
 
         /* retrieve the vendor and device strings as longname */
-        if (quirk && quirk->vendor_name) {
+        if (quirk && quirk->vendor_name && *quirk->vendor_name) {
                 len = strlcpy(card->longname, quirk->vendor_name, sizeof(card->longname));
         } else {
                 if (dev->descriptor.iManufacturer)
@@ -375,8 +386,11 @@ static int snd_usb_audio_create(struct usb_device *dev, int idx,
                         len = 0;
                 /* we don't really care if there isn't any vendor string */
         }
-        if (len > 0)
-                strlcat(card->longname, " ", sizeof(card->longname));
+        if (len > 0) {
+                remove_trailing_spaces(card->longname);
+                if (*card->longname)
+                        strlcat(card->longname, " ", sizeof(card->longname));
+        }
 
         strlcat(card->longname, card->shortname, sizeof(card->longname));