157 files changed, 2701 insertions, 656 deletions

diff --git a/Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870 b/Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870
new file mode 100644
index 000000000000..aa11dbdd794b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-backlight-driver-adp8870
@@ -0,0 +1,56 @@
+What:           /sys/class/backlight/<backlight>/<ambient light zone>_max
+What:           /sys/class/backlight/<backlight>/l1_daylight_max
+What:           /sys/class/backlight/<backlight>/l2_bright_max
+What:           /sys/class/backlight/<backlight>/l3_office_max
+What:           /sys/class/backlight/<backlight>/l4_indoor_max
+What:           /sys/class/backlight/<backlight>/l5_dark_max
+Date:           Mai 2011
+KernelVersion:  2.6.40
+Contact:        device-drivers-devel@blackfin.uclinux.org
+Description:
+                Control the maximum brightness for <ambient light zone>
+                on this <backlight>. Values are between 0 and 127. This file
+                will also show the brightness level stored for this
+                <ambient light zone>.
+
+What:           /sys/class/backlight/<backlight>/<ambient light zone>_dim
+What:           /sys/class/backlight/<backlight>/l2_bright_dim
+What:           /sys/class/backlight/<backlight>/l3_office_dim
+What:           /sys/class/backlight/<backlight>/l4_indoor_dim
+What:           /sys/class/backlight/<backlight>/l5_dark_dim
+Date:           Mai 2011
+KernelVersion:  2.6.40
+Contact:        device-drivers-devel@blackfin.uclinux.org
+Description:
+                Control the dim brightness for <ambient light zone>
+                on this <backlight>. Values are between 0 and 127, typically
+                set to 0. Full off when the backlight is disabled.
+                This file will also show the dim brightness level stored for
+                this <ambient light zone>.
+
+What:           /sys/class/backlight/<backlight>/ambient_light_level
+Date:           Mai 2011
+KernelVersion:  2.6.40
+Contact:        device-drivers-devel@blackfin.uclinux.org
+Description:
+                Get conversion value of the light sensor.
+                This value is updated every 80 ms (when the light sensor
+                is enabled). Returns integer between 0 (dark) and
+                8000 (max ambient brightness)
+
+What:           /sys/class/backlight/<backlight>/ambient_light_zone
+Date:           Mai 2011
+KernelVersion:  2.6.40
+Contact:        device-drivers-devel@blackfin.uclinux.org
+Description:
+                Get/Set current ambient light zone. Reading returns
+                integer between 1..5 (1 = daylight, 2 = bright, ..., 5 = dark).
+                Writing a value between 1..5 forces the backlight controller
+                to enter the corresponding ambient light zone.
+                Writing 0 returns to normal/automatic ambient light level
+                operation. The ambient light sensing feature on these devices
+                is an extension to the API documented in
+                Documentation/ABI/stable/sysfs-class-backlight.
+                It can be enabled by writing the value stored in
+                /sys/class/backlight/<backlight>/max_brightness to
+                /sys/class/backlight/<backlight>/brightness.
\ No newline at end of file
diff --git a/Documentation/accounting/cgroupstats.txt b/Documentation/accounting/cgroupstats.txt
index eda40fd39cad..d16a9849e60e 100644
--- a/Documentation/accounting/cgroupstats.txt
+++ b/Documentation/accounting/cgroupstats.txt
@@ -21,7 +21,7 @@ information will not be available.
 To extract cgroup statistics a utility very similar to getdelays.c
 has been developed, the sample output of the utility is shown below
 
-~/balbir/cgroupstats # ./getdelays  -C "/cgroup/a"
+~/balbir/cgroupstats # ./getdelays  -C "/sys/fs/cgroup/a"
 sleeping 1, blocked 0, running 1, stopped 0, uninterruptible 0
-~/balbir/cgroupstats # ./getdelays  -C "/cgroup"
+~/balbir/cgroupstats # ./getdelays  -C "/sys/fs/cgroup"
 sleeping 155, blocked 0, running 1, stopped 0, uninterruptible 2
diff --git a/Documentation/cgroups/blkio-controller.txt b/Documentation/cgroups/blkio-controller.txt
index 465351d4cf85..cd45c8ea7463 100644
--- a/Documentation/cgroups/blkio-controller.txt
+++ b/Documentation/cgroups/blkio-controller.txt
@@ -28,16 +28,19 @@ cgroups. Here is what you can do.
 - Enable group scheduling in CFQ
         CONFIG_CFQ_GROUP_IOSCHED=y
 
-- Compile and boot into kernel and mount IO controller (blkio).
+- Compile and boot into kernel and mount IO controller (blkio); see
+  cgroups.txt, Why are cgroups needed?.
 
-        mount -t cgroup -o blkio none /cgroup
+        mount -t tmpfs cgroup_root /sys/fs/cgroup
+        mkdir /sys/fs/cgroup/blkio
+        mount -t cgroup -o blkio none /sys/fs/cgroup/blkio
 
 - Create two cgroups
-        mkdir -p /cgroup/test1/ /cgroup/test2
+        mkdir -p /sys/fs/cgroup/blkio/test1/ /sys/fs/cgroup/blkio/test2
 
 - Set weights of group test1 and test2
-        echo 1000 > /cgroup/test1/blkio.weight
-        echo 500 > /cgroup/test2/blkio.weight
+        echo 1000 > /sys/fs/cgroup/blkio/test1/blkio.weight
+        echo 500 > /sys/fs/cgroup/blkio/test2/blkio.weight
 
 - Create two same size files (say 512MB each) on same disk (file1, file2) and
   launch two dd threads in different cgroup to read those files.
@@ -46,12 +49,12 @@ cgroups. Here is what you can do.
         echo 3 > /proc/sys/vm/drop_caches
 
         dd if=/mnt/sdb/zerofile1 of=/dev/null &
-        echo $! > /cgroup/test1/tasks
-        cat /cgroup/test1/tasks
+        echo $! > /sys/fs/cgroup/blkio/test1/tasks
+        cat /sys/fs/cgroup/blkio/test1/tasks
 
         dd if=/mnt/sdb/zerofile2 of=/dev/null &
-        echo $! > /cgroup/test2/tasks
-        cat /cgroup/test2/tasks
+        echo $! > /sys/fs/cgroup/blkio/test2/tasks
+        cat /sys/fs/cgroup/blkio/test2/tasks
 
 - At macro level, first dd should finish first. To get more precise data, keep
   on looking at (with the help of script), at blkio.disk_time and
@@ -68,13 +71,13 @@ Throttling/Upper Limit policy
 - Enable throttling in block layer
         CONFIG_BLK_DEV_THROTTLING=y
 
-- Mount blkio controller
-        mount -t cgroup -o blkio none /cgroup/blkio
+- Mount blkio controller (see cgroups.txt, Why are cgroups needed?)
+        mount -t cgroup -o blkio none /sys/fs/cgroup/blkio
 
 - Specify a bandwidth rate on particular device for root group. The format
   for policy is "<major>:<minor>  <byes_per_second>".
 
-        echo "8:16  1048576" > /cgroup/blkio/blkio.read_bps_device
+        echo "8:16  1048576" > /sys/fs/cgroup/blkio/blkio.read_bps_device
 
   Above will put a limit of 1MB/second on reads happening for root group
   on device having major/minor number 8:16.
@@ -108,7 +111,7 @@ Hierarchical Cgroups
   CFQ and throttling will practically treat all groups at same level.
 
                                 pivot
-                             /  |   \  \
+                             /  /   \  \
                         root  test1 test2  test3
 
   Down the line we can implement hierarchical accounting/control support
@@ -149,7 +152,7 @@ Proportional weight policy files
 
           Following is the format.
 
-          #echo dev_maj:dev_minor weight > /path/to/cgroup/blkio.weight_device
+          # echo dev_maj:dev_minor weight > blkio.weight_device
           Configure weight=300 on /dev/sdb (8:16) in this cgroup
           # echo 8:16 300 > blkio.weight_device
           # cat blkio.weight_device
diff --git a/Documentation/cgroups/cgroups.txt b/Documentation/cgroups/cgroups.txt
index 0ed99f08f1f3..cd67e90003c0 100644
--- a/Documentation/cgroups/cgroups.txt
+++ b/Documentation/cgroups/cgroups.txt
@@ -138,11 +138,11 @@ With the ability to classify tasks differently for different resources
 the admin can easily set up a script which receives exec notifications
 and depending on who is launching the browser he can
 
-       # echo browser_pid > /mnt/<restype>/<userclass>/tasks
+    # echo browser_pid > /sys/fs/cgroup/<restype>/<userclass>/tasks
 
 With only a single hierarchy, he now would potentially have to create
 a separate cgroup for every browser launched and associate it with
-approp network and other resource class.  This may lead to
+appropriate network and other resource class.  This may lead to
 proliferation of such cgroups.
 
 Also lets say that the administrator would like to give enhanced network
@@ -153,9 +153,9 @@ apps enhanced CPU power,
 With ability to write pids directly to resource classes, it's just a
 matter of :
 
-       # echo pid > /mnt/network/<new_class>/tasks
+       # echo pid > /sys/fs/cgroup/network/<new_class>/tasks
        (after some time)
-       # echo pid > /mnt/network/<orig_class>/tasks
+       # echo pid > /sys/fs/cgroup/network/<orig_class>/tasks
 
 Without this ability, he would have to split the cgroup into
 multiple separate ones and then associate the new cgroups with the
@@ -310,21 +310,24 @@ subsystem, this is the case for the cpuset.
 To start a new job that is to be contained within a cgroup, using
 the "cpuset" cgroup subsystem, the steps are something like:
 
- 1) mkdir /dev/cgroup
- 2) mount -t cgroup -ocpuset cpuset /dev/cgroup
- 3) Create the new cgroup by doing mkdir's and write's (or echo's) in
-    the /dev/cgroup virtual file system.
- 4) Start a task that will be the "founding father" of the new job.
- 5) Attach that task to the new cgroup by writing its pid to the
-    /dev/cgroup tasks file for that cgroup.
- 6) fork, exec or clone the job tasks from this founding father task.
+ 1) mount -t tmpfs cgroup_root /sys/fs/cgroup
+ 2) mkdir /sys/fs/cgroup/cpuset
+ 3) mount -t cgroup -ocpuset cpuset /sys/fs/cgroup/cpuset
+ 4) Create the new cgroup by doing mkdir's and write's (or echo's) in
+    the /sys/fs/cgroup virtual file system.
+ 5) Start a task that will be the "founding father" of the new job.
+ 6) Attach that task to the new cgroup by writing its pid to the
+    /sys/fs/cgroup/cpuset/tasks file for that cgroup.
+ 7) fork, exec or clone the job tasks from this founding father task.
 
 For example, the following sequence of commands will setup a cgroup
 named "Charlie", containing just CPUs 2 and 3, and Memory Node 1,
 and then start a subshell 'sh' in that cgroup:
 
-  mount -t cgroup cpuset -ocpuset /dev/cgroup
-  cd /dev/cgroup
+  mount -t tmpfs cgroup_root /sys/fs/cgroup
+  mkdir /sys/fs/cgroup/cpuset
+  mount -t cgroup cpuset -ocpuset /sys/fs/cgroup/cpuset
+  cd /sys/fs/cgroup/cpuset
   mkdir Charlie
   cd Charlie
   /bin/echo 2-3 > cpuset.cpus
@@ -345,7 +348,7 @@ Creating, modifying, using the cgroups can be done through the cgroup
 virtual filesystem.
 
 To mount a cgroup hierarchy with all available subsystems, type:
-# mount -t cgroup xxx /dev/cgroup
+# mount -t cgroup xxx /sys/fs/cgroup
 
 The "xxx" is not interpreted by the cgroup code, but will appear in
 /proc/mounts so may be any useful identifying string that you like.
@@ -354,23 +357,32 @@ Note: Some subsystems do not work without some user input first.  For instance,
 if cpusets are enabled the user will have to populate the cpus and mems files
 for each new cgroup created before that group can be used.
 
+As explained in section `1.2 Why are cgroups needed?' you should create
+different hierarchies of cgroups for each single resource or group of
+resources you want to control. Therefore, you should mount a tmpfs on
+/sys/fs/cgroup and create directories for each cgroup resource or resource
+group.
+
+# mount -t tmpfs cgroup_root /sys/fs/cgroup
+# mkdir /sys/fs/cgroup/rg1
+
 To mount a cgroup hierarchy with just the cpuset and memory
 subsystems, type:
-# mount -t cgroup -o cpuset,memory hier1 /dev/cgroup
+# mount -t cgroup -o cpuset,memory hier1 /sys/fs/cgroup/rg1
 
 To change the set of subsystems bound to a mounted hierarchy, just
 remount with different options:
-# mount -o remount,cpuset,blkio hier1 /dev/cgroup
+# mount -o remount,cpuset,blkio hier1 /sys/fs/cgroup/rg1
 
 Now memory is removed from the hierarchy and blkio is added.
 
 Note this will add blkio to the hierarchy but won't remove memory or
 cpuset, because the new options are appended to the old ones:
-# mount -o remount,blkio /dev/cgroup
+# mount -o remount,blkio /sys/fs/cgroup/rg1
 
 To Specify a hierarchy's release_agent:
 # mount -t cgroup -o cpuset,release_agent="/sbin/cpuset_release_agent" \
-  xxx /dev/cgroup
+  xxx /sys/fs/cgroup/rg1
 
 Note that specifying 'release_agent' more than once will return failure.
 
@@ -379,17 +391,17 @@ when the hierarchy consists of a single (root) cgroup. Supporting
 the ability to arbitrarily bind/unbind subsystems from an existing
 cgroup hierarchy is intended to be implemented in the future.
 
-Then under /dev/cgroup you can find a tree that corresponds to the
-tree of the cgroups in the system. For instance, /dev/cgroup
+Then under /sys/fs/cgroup/rg1 you can find a tree that corresponds to the
+tree of the cgroups in the system. For instance, /sys/fs/cgroup/rg1
 is the cgroup that holds the whole system.
 
 If you want to change the value of release_agent:
-# echo "/sbin/new_release_agent" > /dev/cgroup/release_agent
+# echo "/sbin/new_release_agent" > /sys/fs/cgroup/rg1/release_agent
 
 It can also be changed via remount.
 
-If you want to create a new cgroup under /dev/cgroup:
-# cd /dev/cgroup
+If you want to create a new cgroup under /sys/fs/cgroup/rg1:
+# cd /sys/fs/cgroup/rg1
 # mkdir my_cgroup
 
 Now you want to do something with this cgroup.
diff --git a/Documentation/cgroups/cpuacct.txt b/Documentation/cgroups/cpuacct.txt
index 8b930946c52a..9ad85df4b983 100644
--- a/Documentation/cgroups/cpuacct.txt
+++ b/Documentation/cgroups/cpuacct.txt
@@ -10,26 +10,25 @@ directly present in its group.
 
 Accounting groups can be created by first mounting the cgroup filesystem.
 
-# mkdir /cgroups
-# mount -t cgroup -ocpuacct none /cgroups
-
-With the above step, the initial or the parent accounting group
-becomes visible at /cgroups. At bootup, this group includes all the
-tasks in the system. /cgroups/tasks lists the tasks in this cgroup.
-/cgroups/cpuacct.usage gives the CPU time (in nanoseconds) obtained by
-this group which is essentially the CPU time obtained by all the tasks
+# mount -t cgroup -ocpuacct none /sys/fs/cgroup
+
+With the above step, the initial or the parent accounting group becomes
+visible at /sys/fs/cgroup. At bootup, this group includes all the tasks in
+the system. /sys/fs/cgroup/tasks lists the tasks in this cgroup.
+/sys/fs/cgroup/cpuacct.usage gives the CPU time (in nanoseconds) obtained
+by this group which is essentially the CPU time obtained by all the tasks
 in the system.
 
-New accounting groups can be created under the parent group /cgroups.
+New accounting groups can be created under the parent group /sys/fs/cgroup.
 
-# cd /cgroups
+# cd /sys/fs/cgroup
 # mkdir g1
 # echo $$ > g1
 
 The above steps create a new group g1 and move the current shell
 process (bash) into it. CPU time consumed by this bash and its children
 can be obtained from g1/cpuacct.usage and the same is accumulated in
-/cgroups/cpuacct.usage also.
+/sys/fs/cgroup/cpuacct.usage also.
 
 cpuacct.stat file lists a few statistics which further divide the
 CPU time obtained by the cgroup into user and system times. Currently
diff --git a/Documentation/cgroups/cpusets.txt b/Documentation/cgroups/cpusets.txt
index 98a30829af7a..5b0d78e55ccc 100644
--- a/Documentation/cgroups/cpusets.txt
+++ b/Documentation/cgroups/cpusets.txt
@@ -661,21 +661,21 @@ than stress the kernel.
 
 To start a new job that is to be contained within a cpuset, the steps are:
 
- 1) mkdir /dev/cpuset
- 2) mount -t cgroup -ocpuset cpuset /dev/cpuset
+ 1) mkdir /sys/fs/cgroup/cpuset
+ 2) mount -t cgroup -ocpuset cpuset /sys/fs/cgroup/cpuset
  3) Create the new cpuset by doing mkdir's and write's (or echo's) in
-    the /dev/cpuset virtual file system.
+    the /sys/fs/cgroup/cpuset virtual file system.
  4) Start a task that will be the "founding father" of the new job.
  5) Attach that task to the new cpuset by writing its pid to the
-    /dev/cpuset tasks file for that cpuset.
+    /sys/fs/cgroup/cpuset tasks file for that cpuset.
  6) fork, exec or clone the job tasks from this founding father task.
 
 For example, the following sequence of commands will setup a cpuset
 named "Charlie", containing just CPUs 2 and 3, and Memory Node 1,
 and then start a subshell 'sh' in that cpuset:
 
-  mount -t cgroup -ocpuset cpuset /dev/cpuset
-  cd /dev/cpuset
+  mount -t cgroup -ocpuset cpuset /sys/fs/cgroup/cpuset
+  cd /sys/fs/cgroup/cpuset
   mkdir Charlie
   cd Charlie
   /bin/echo 2-3 > cpuset.cpus
@@ -710,14 +710,14 @@ Creating, modifying, using the cpusets can be done through the cpuset
 virtual filesystem.
 
 To mount it, type:
-# mount -t cgroup -o cpuset cpuset /dev/cpuset
+# mount -t cgroup -o cpuset cpuset /sys/fs/cgroup/cpuset
 
-Then under /dev/cpuset you can find a tree that corresponds to the
-tree of the cpusets in the system. For instance, /dev/cpuset
+Then under /sys/fs/cgroup/cpuset you can find a tree that corresponds to the
+tree of the cpusets in the system. For instance, /sys/fs/cgroup/cpuset
 is the cpuset that holds the whole system.
 
-If you want to create a new cpuset under /dev/cpuset:
-# cd /dev/cpuset
+If you want to create a new cpuset under /sys/fs/cgroup/cpuset:
+# cd /sys/fs/cgroup/cpuset
 # mkdir my_cpuset
 
 Now you want to do something with this cpuset.
@@ -765,12 +765,12 @@ wrapper around the cgroup filesystem.
 
 The command
 
-mount -t cpuset X /dev/cpuset
+mount -t cpuset X /sys/fs/cgroup/cpuset
 
 is equivalent to
 
-mount -t cgroup -ocpuset,noprefix X /dev/cpuset
-echo "/sbin/cpuset_release_agent" > /dev/cpuset/release_agent
+mount -t cgroup -ocpuset,noprefix X /sys/fs/cgroup/cpuset
+echo "/sbin/cpuset_release_agent" > /sys/fs/cgroup/cpuset/release_agent
 
 2.2 Adding/removing cpus
 ------------------------
diff --git a/Documentation/cgroups/devices.txt b/Documentation/cgroups/devices.txt
index 57ca4c89fe5c..16624a7f8222 100644
--- a/Documentation/cgroups/devices.txt
+++ b/Documentation/cgroups/devices.txt
@@ -22,16 +22,16 @@ removed from the child(ren).
 An entry is added using devices.allow, and removed using
 devices.deny.  For instance
 
-        echo 'c 1:3 mr' > /cgroups/1/devices.allow
+        echo 'c 1:3 mr' > /sys/fs/cgroup/1/devices.allow
 
 allows cgroup 1 to read and mknod the device usually known as
 /dev/null.  Doing
 
-        echo a > /cgroups/1/devices.deny
+        echo a > /sys/fs/cgroup/1/devices.deny
 
 will remove the default 'a *:* rwm' entry. Doing
 
-        echo a > /cgroups/1/devices.allow
+        echo a > /sys/fs/cgroup/1/devices.allow
 
 will add the 'a *:* rwm' entry to the whitelist.
 
diff --git a/Documentation/cgroups/freezer-subsystem.txt b/Documentation/cgroups/freezer-subsystem.txt
index 41f37fea1276..c21d77742a07 100644
--- a/Documentation/cgroups/freezer-subsystem.txt
+++ b/Documentation/cgroups/freezer-subsystem.txt
@@ -59,28 +59,28 @@ is non-freezable.
 
 * Examples of usage :
 
-   # mkdir /containers
-   # mount -t cgroup -ofreezer freezer  /containers
-   # mkdir /containers/0
-   # echo $some_pid > /containers/0/tasks
+   # mkdir /sys/fs/cgroup/freezer
+   # mount -t cgroup -ofreezer freezer /sys/fs/cgroup/freezer
+   # mkdir /sys/fs/cgroup/freezer/0
+   # echo $some_pid > /sys/fs/cgroup/freezer/0/tasks
 
 to get status of the freezer subsystem :
 
-   # cat /containers/0/freezer.state
+   # cat /sys/fs/cgroup/freezer/0/freezer.state
    THAWED
 
 to freeze all tasks in the container :
 
-   # echo FROZEN > /containers/0/freezer.state
-   # cat /containers/0/freezer.state
+   # echo FROZEN > /sys/fs/cgroup/freezer/0/freezer.state
+   # cat /sys/fs/cgroup/freezer/0/freezer.state
    FREEZING
-   # cat /containers/0/freezer.state
+   # cat /sys/fs/cgroup/freezer/0/freezer.state
    FROZEN
 
 to unfreeze all tasks in the container :
 
-   # echo THAWED > /containers/0/freezer.state
-   # cat /containers/0/freezer.state
+   # echo THAWED > /sys/fs/cgroup/freezer/0/freezer.state
+   # cat /sys/fs/cgroup/freezer/0/freezer.state
    THAWED
 
 This is the basic mechanism which should do the right thing for user space task
diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt
index 7c163477fcd8..06eb6d957c83 100644
--- a/Documentation/cgroups/memory.txt
+++ b/Documentation/cgroups/memory.txt
@@ -1,8 +1,8 @@
 Memory Resource Controller
 
-NOTE: The Memory Resource Controller has been generically been referred
-      to as the memory controller in this document. Do not confuse memory
-      controller used here with the memory controller that is used in hardware.
+NOTE: The Memory Resource Controller has generically been referred to as the
+      memory controller in this document. Do not confuse memory controller
+      used here with the memory controller that is used in hardware.
 
 (For editors)
 In this document:
@@ -70,6 +70,7 @@ Brief summary of control files.
                                  (See sysctl's vm.swappiness)
  memory.move_charge_at_immigrate # set/show controls of moving charges
  memory.oom_control              # set/show oom controls.
+ memory.numa_stat                # show the number of memory usage per numa node
 
 1. History
 
@@ -181,7 +182,7 @@ behind this approach is that a cgroup that aggressively uses a shared
 page will eventually get charged for it (once it is uncharged from
 the cgroup that brought it in -- this will happen on memory pressure).
 
-Exception: If CONFIG_CGROUP_CGROUP_MEM_RES_CTLR_SWAP is not used..
+Exception: If CONFIG_CGROUP_CGROUP_MEM_RES_CTLR_SWAP is not used.
 When you do swapoff and make swapped-out pages of shmem(tmpfs) to
 be backed into memory in force, charges for pages are accounted against the
 caller of swapoff rather than the users of shmem.
@@ -213,7 +214,7 @@ affecting global LRU, memory+swap limit is better than just limiting swap from
 OS point of view.
 
 * What happens when a cgroup hits memory.memsw.limit_in_bytes
-When a cgroup his memory.memsw.limit_in_bytes, it's useless to do swap-out
+When a cgroup hits memory.memsw.limit_in_bytes, it's useless to do swap-out
 in this cgroup. Then, swap-out will not be done by cgroup routine and file
 caches are dropped. But as mentioned above, global LRU can do swapout memory
 from it for sanity of the system's memory management state. You can't forbid
@@ -263,16 +264,17 @@ b. Enable CONFIG_RESOURCE_COUNTERS
 c. Enable CONFIG_CGROUP_MEM_RES_CTLR
 d. Enable CONFIG_CGROUP_MEM_RES_CTLR_SWAP (to use swap extension)
 
-1. Prepare the cgroups
-# mkdir -p /cgroups
-# mount -t cgroup none /cgroups -o memory
+1. Prepare the cgroups (see cgroups.txt, Why are cgroups needed?)
+# mount -t tmpfs none /sys/fs/cgroup
+# mkdir /sys/fs/cgroup/memory
+# mount -t cgroup none /sys/fs/cgroup/memory -o memory
 
 2. Make the new group and move bash into it
-# mkdir /cgroups/0
-# echo $$ > /cgroups/0/tasks
+# mkdir /sys/fs/cgroup/memory/0
+# echo $$ > /sys/fs/cgroup/memory/0/tasks
 
 Since now we're in the 0 cgroup, we can alter the memory limit:
-# echo 4M > /cgroups/0/memory.limit_in_bytes
+# echo 4M > /sys/fs/cgroup/memory/0/memory.limit_in_bytes
 
 NOTE: We can use a suffix (k, K, m, M, g or G) to indicate values in kilo,
 mega or gigabytes. (Here, Kilo, Mega, Giga are Kibibytes, Mebibytes, Gibibytes.)
@@ -280,11 +282,11 @@ mega or gigabytes. (Here, Kilo, Mega, Giga are Kibibytes, Mebibytes, Gibibytes.)
 NOTE: We can write "-1" to reset the *.limit_in_bytes(unlimited).
 NOTE: We cannot set limits on the root cgroup any more.
 
-# cat /cgroups/0/memory.limit_in_bytes
+# cat /sys/fs/cgroup/memory/0/memory.limit_in_bytes
 4194304
 
 We can check the usage:
-# cat /cgroups/0/memory.usage_in_bytes
+# cat /sys/fs/cgroup/memory/0/memory.usage_in_bytes
 1216512
 
 A successful write to this file does not guarantee a successful set of
@@ -464,6 +466,24 @@ value for efficient access. (Of course, when necessary, it's synchronized.)
 If you want to know more exact memory usage, you should use RSS+CACHE(+SWAP)
 value in memory.stat(see 5.2).
 
+5.6 numa_stat
+
+This is similar to numa_maps but operates on a per-memcg basis.  This is
+useful for providing visibility into the numa locality information within
+an memcg since the pages are allowed to be allocated from any physical
+node.  One of the usecases is evaluating application performance by
+combining this information with the application's cpu allocation.
+
+We export "total", "file", "anon" and "unevictable" pages per-node for
+each memcg.  The ouput format of memory.numa_stat is:
+
+total=<total pages> N0=<node 0 pages> N1=<node 1 pages> ...
+file=<total file pages> N0=<node 0 pages> N1=<node 1 pages> ...
+anon=<total anon pages> N0=<node 0 pages> N1=<node 1 pages> ...
+unevictable=<total anon pages> N0=<node 0 pages> N1=<node 1 pages> ...
+
+And we have total = file + anon + unevictable.
+
 6. Hierarchy support
 
 The memory controller supports a deep hierarchy and hierarchical accounting.
@@ -471,13 +491,13 @@ The hierarchy is created by creating the appropriate cgroups in the
 cgroup filesystem. Consider for example, the following cgroup filesystem
 hierarchy
 
-                root
+               root
              /  |   \
-           /    |    \
-          a     b       c
-                        | \
-                        |  \
-                        d   e
+            /   |    \
+           a    b     c
+                      | \
+                      |  \
+                      d   e
 
 In the diagram above, with hierarchical accounting enabled, all memory
 usage of e, is accounted to its ancestors up until the root (i.e, c and root),
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 1a9446b59153..72e238465b0b 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -481,23 +481,6 @@ Who:	FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
 
 ----------------------------
 
-What:   namespace cgroup (ns_cgroup)
-When:   2.6.38
-Why:    The ns_cgroup leads to some problems:
-        * cgroup creation is out-of-control
-        * cgroup name can conflict when pids are looping
-        * it is not possible to have a single process handling
-        a lot of namespaces without falling in a exponential creation time
-        * we may want to create a namespace without creating a cgroup
-
-        The ns_cgroup is replaced by a compatibility flag 'clone_children',
-        where a newly created cgroup will copy the parent cgroup values.
-        The userspace has to manually create a cgroup and add a task to
-        the 'tasks' file.
-Who:    Daniel Lezcano <daniel.lezcano@free.fr>
-
-----------------------------
-
 What:   iwlwifi disable_hw_scan module parameters
 When:   2.6.40
 Why:    Hareware scan is the prefer method for iwlwifi devices for
diff --git a/Documentation/kmemleak.txt b/Documentation/kmemleak.txt
index 090e6ee04536..51063e681ca4 100644
--- a/Documentation/kmemleak.txt
+++ b/Documentation/kmemleak.txt
@@ -11,7 +11,9 @@ with the difference that the orphan objects are not freed but only
 reported via /sys/kernel/debug/kmemleak. A similar method is used by the
 Valgrind tool (memcheck --leak-check) to detect the memory leaks in
 user-space applications.
-Kmemleak is supported on x86, arm, powerpc, sparc, sh, microblaze and tile.
+
+Please check DEBUG_KMEMLEAK dependencies in lib/Kconfig.debug for supported
+architectures.
 
 Usage
 -----
diff --git a/Documentation/md.txt b/Documentation/md.txt
index 2366b1c8cf19..f0eee83ff78a 100644
--- a/Documentation/md.txt
+++ b/Documentation/md.txt
@@ -555,7 +555,7 @@ also have
    sync_min
    sync_max
      The two values, given as numbers of sectors, indicate a range
-     withing the array where 'check'/'repair' will operate. Must be
+     within the array where 'check'/'repair' will operate. Must be
      a multiple of chunk_size. When it reaches "sync_max" it will
      pause, rather than complete.
      You can use 'select' or 'poll' on "sync_completed" to wait for
diff --git a/Documentation/printk-formats.txt b/Documentation/printk-formats.txt
index 1b5a5ddbc3ef..5df176ed59b8 100644
--- a/Documentation/printk-formats.txt
+++ b/Documentation/printk-formats.txt
@@ -9,7 +9,121 @@ If variable is of Type,		use printk format specifier:
                 size_t                  %zu or %zx
                 ssize_t                 %zd or %zx
 
-Raw pointer value SHOULD be printed with %p.
+Raw pointer value SHOULD be printed with %p. The kernel supports
+the following extended format specifiers for pointer types:
+
+Symbols/Function Pointers:
+
+        %pF     versatile_init+0x0/0x110
+        %pf     versatile_init
+        %pS     versatile_init+0x0/0x110
+        %ps     versatile_init
+        %pB     prev_fn_of_versatile_init+0x88/0x88
+
+        For printing symbols and function pointers. The 'S' and 's' specifiers
+        result in the symbol name with ('S') or without ('s') offsets. Where
+        this is used on a kernel without KALLSYMS - the symbol address is
+        printed instead.
+
+        The 'B' specifier results in the symbol name with offsets and should be
+        used when printing stack backtraces. The specifier takes into
+        consideration the effect of compiler optimisations which may occur
+        when tail-call's are used and marked with the noreturn GCC attribute.
+
+        On ia64, ppc64 and parisc64 architectures function pointers are
+        actually function descriptors which must first be resolved. The 'F' and
+        'f' specifiers perform this resolution and then provide the same
+        functionality as the 'S' and 's' specifiers.
+
+Kernel Pointers:
+
+        %pK     0x01234567 or 0x0123456789abcdef
+
+        For printing kernel pointers which should be hidden from unprivileged
+        users. The behaviour of %pK depends on the kptr_restrict sysctl - see
+        Documentation/sysctl/kernel.txt for more details.
+
+Struct Resources:
+
+        %pr     [mem 0x60000000-0x6fffffff flags 0x2200] or
+                [mem 0x0000000060000000-0x000000006fffffff flags 0x2200]
+        %pR     [mem 0x60000000-0x6fffffff pref] or
+                [mem 0x0000000060000000-0x000000006fffffff pref]
+
+        For printing struct resources. The 'R' and 'r' specifiers result in a
+        printed resource with ('R') or without ('r') a decoded flags member.
+
+MAC/FDDI addresses:
+
+        %pM     00:01:02:03:04:05
+        %pMF    00-01-02-03-04-05
+        %pm     000102030405
+
+        For printing 6-byte MAC/FDDI addresses in hex notation. The 'M' and 'm'
+        specifiers result in a printed address with ('M') or without ('m') byte
+        separators. The default byte separator is the colon (':').
+
+        Where FDDI addresses are concerned the 'F' specifier can be used after
+        the 'M' specifier to use dash ('-') separators instead of the default
+        separator.
+
+IPv4 addresses:
+
+        %pI4    1.2.3.4
+        %pi4    001.002.003.004
+        %p[Ii][hnbl]
+
+        For printing IPv4 dot-separated decimal addresses. The 'I4' and 'i4'
+        specifiers result in a printed address with ('i4') or without ('I4')
+        leading zeros.
+
+        The additional 'h', 'n', 'b', and 'l' specifiers are used to specify
+        host, network, big or little endian order addresses respectively. Where
+        no specifier is provided the default network/big endian order is used.
+
+IPv6 addresses:
+
+        %pI6    0001:0002:0003:0004:0005:0006:0007:0008
+        %pi6    00010002000300040005000600070008
+        %pI6c   1:2:3:4:5:6:7:8
+
+        For printing IPv6 network-order 16-bit hex addresses. The 'I6' and 'i6'
+        specifiers result in a printed address with ('I6') or without ('i6')
+        colon-separators. Leading zeros are always used.
+
+        The additional 'c' specifier can be used with the 'I' specifier to
+        print a compressed IPv6 address as described by
+        http://tools.ietf.org/html/rfc5952
+
+UUID/GUID addresses:
+
+        %pUb    00010203-0405-0607-0809-0a0b0c0d0e0f
+        %pUB    00010203-0405-0607-0809-0A0B0C0D0E0F
+        %pUl    03020100-0504-0706-0809-0a0b0c0e0e0f
+        %pUL    03020100-0504-0706-0809-0A0B0C0E0E0F
+
+        For printing 16-byte UUID/GUIDs addresses. The additional 'l', 'L',
+        'b' and 'B' specifiers are used to specify a little endian order in
+        lower ('l') or upper case ('L') hex characters - and big endian order
+        in lower ('b') or upper case ('B') hex characters.
+
+        Where no additional specifiers are used the default little endian
+        order with lower case hex characters will be printed.
+
+struct va_format:
+
+        %pV
+
+        For printing struct va_format structures. These contain a format string
+        and va_list as follows:
+
+        struct va_format {
+                const char *fmt;
+                va_list *va;
+        };
+
+        Do not use this feature without some mechanism to verify the
+        correctness of the format string and va_list arguments.
 
 u64 SHOULD be printed with %llu/%llx, (unsigned long long):
 
@@ -32,4 +146,5 @@ Reminder: sizeof() result is of type size_t.
 Thank you for your cooperation and attention.
 
 
-By Randy Dunlap <rdunlap@xenotime.net>
+By Randy Dunlap <rdunlap@xenotime.net> and
+Andrew Murray <amurray@mpc-data.co.uk>
diff --git a/Documentation/scheduler/sched-design-CFS.txt b/Documentation/scheduler/sched-design-CFS.txt
index 99961993257a..91ecff07cede 100644
--- a/Documentation/scheduler/sched-design-CFS.txt
+++ b/Documentation/scheduler/sched-design-CFS.txt
@@ -223,9 +223,10 @@ When CONFIG_FAIR_GROUP_SCHED is defined, a "cpu.shares" file is created for each
 group created using the pseudo filesystem.  See example steps below to create
 task groups and modify their CPU share using the "cgroups" pseudo filesystem.
 
-        # mkdir /dev/cpuctl
-        # mount -t cgroup -ocpu none /dev/cpuctl
-        # cd /dev/cpuctl
+        # mount -t tmpfs cgroup_root /sys/fs/cgroup
+        # mkdir /sys/fs/cgroup/cpu
+        # mount -t cgroup -ocpu none /sys/fs/cgroup/cpu
+        # cd /sys/fs/cgroup/cpu
 
         # mkdir multimedia      # create "multimedia" group of tasks
         # mkdir browser         # create "browser" group of tasks
diff --git a/Documentation/scheduler/sched-rt-group.txt b/Documentation/scheduler/sched-rt-group.txt
index 605b0d40329d..71b54d549987 100644
--- a/Documentation/scheduler/sched-rt-group.txt
+++ b/Documentation/scheduler/sched-rt-group.txt
@@ -129,9 +129,8 @@ priority!
 Enabling CONFIG_RT_GROUP_SCHED lets you explicitly allocate real
 CPU bandwidth to task groups.
 
-This uses the /cgroup virtual file system and
-"/cgroup/<cgroup>/cpu.rt_runtime_us" to control the CPU time reserved for each
-control group.
+This uses the cgroup virtual file system and "<cgroup>/cpu.rt_runtime_us"
+to control the CPU time reserved for each control group.
 
 For more information on working with control groups, you should read
 Documentation/cgroups/cgroups.txt as well.
@@ -150,7 +149,7 @@ For now, this can be simplified to just the following (but see Future plans):
 ===============
 
 There is work in progress to make the scheduling period for each group
-("/cgroup/<cgroup>/cpu.rt_period_us") configurable as well.
+("<cgroup>/cpu.rt_period_us") configurable as well.
 
 The constraint on the period is that a subgroup must have a smaller or
 equal period to its parent. But realistically its not very useful _yet_
diff --git a/Documentation/vm/hwpoison.txt b/Documentation/vm/hwpoison.txt
index 12f9ba20ccb7..550068466605 100644
--- a/Documentation/vm/hwpoison.txt
+++ b/Documentation/vm/hwpoison.txt
@@ -129,12 +129,12 @@ Limit injection to pages owned by memgroup. Specified by inode number
 of the memcg.
 
 Example:
-        mkdir /cgroup/hwpoison
+        mkdir /sys/fs/cgroup/mem/hwpoison
 
         usemem -m 100 -s 1000 &
-        echo `jobs -p` > /cgroup/hwpoison/tasks
+        echo `jobs -p` > /sys/fs/cgroup/mem/hwpoison/tasks
 
-        memcg_ino=$(ls -id /cgroup/hwpoison | cut -f1 -d' ')
+        memcg_ino=$(ls -id /sys/fs/cgroup/mem/hwpoison | cut -f1 -d' ')
         echo $memcg_ino > /debug/hwpoison/corrupt-filter-memcg
 
         page-types -p `pidof init`   --hwpoison  # shall do nothing
diff --git a/MAINTAINERS b/MAINTAINERS
index e50fc6eb99e0..6c59eb90fdf4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1889,7 +1889,6 @@ L:	cpufreq@vger.kernel.org
 W:      http://www.codemonkey.org.uk/projects/cpufreq/
 T:      git git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq.git
 S:      Maintained
-F:      arch/x86/kernel/cpu/cpufreq/
 F:      drivers/cpufreq/
 F:      include/linux/cpufreq.h
 
@@ -3820,6 +3819,12 @@ S:	Maintained
 F:      drivers/leds/
 F:      include/linux/leds.h
 
+LEGACY EEPROM DRIVER
+M:      Jean Delvare <khali@linux-fr.org>
+S:      Maintained
+F:      Documentation/misc-devices/eeprom
+F:      drivers/misc/eeprom/eeprom.c
+
 LEGO USB Tower driver
 M:      Juergen Stuber <starblue@users.sourceforge.net>
 L:      legousb-devel@lists.sourceforge.net
@@ -4145,7 +4150,7 @@ F:	include/linux/mm.h
 F:      mm/
 
 MEMORY RESOURCE CONTROLLER
-M:      Balbir Singh <balbir@linux.vnet.ibm.com>
+M:      Balbir Singh <bsingharora@gmail.com>
 M:      Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
 M:      KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
 L:      linux-mm@kvack.org
@@ -4890,7 +4895,7 @@ F:	mm/percpu*.c
 F:      arch/*/include/asm/percpu.h
 
 PER-TASK DELAY ACCOUNTING
-M:      Balbir Singh <balbir@linux.vnet.ibm.com>
+M:      Balbir Singh <bsingharora@gmail.com>
 S:      Maintained
 F:      include/linux/delayacct.h
 F:      kernel/delayacct.c
@@ -6098,7 +6103,7 @@ F:	include/target/
 F:      Documentation/target/
 
 TASKSTATS STATISTICS INTERFACE
-M:      Balbir Singh <balbir@linux.vnet.ibm.com>
+M:      Balbir Singh <bsingharora@gmail.com>
 S:      Maintained
 F:      Documentation/accounting/taskstats*
 F:      include/linux/taskstats*
@@ -6717,6 +6722,14 @@ S:	Maintained
 F:      Documentation/filesystems/vfat.txt
 F:      fs/fat/
 
+VIDEOBUF2 FRAMEWORK
+M:      Pawel Osciak <pawel@osciak.com>
+M:      Marek Szyprowski <m.szyprowski@samsung.com>
+L:      linux-media@vger.kernel.org
+S:      Maintained
+F:      drivers/media/video/videobuf2-*
+F:      include/media/videobuf2-*
+
 VIRTIO CONSOLE DRIVER
 M:      Amit Shah <amit.shah@redhat.com>
 L:      virtualization@lists.linux-foundation.org
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 376f22130791..326f0a2d56e5 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -409,7 +409,7 @@ SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen)
                 return -EFAULT;
 
         len = namelen;
-        if (namelen > 32)
+        if (len > 32)
                 len = 32;
 
         down_read(&uts_sem);
@@ -594,7 +594,7 @@ SYSCALL_DEFINE3(osf_sysinfo, int, command, char __user *, buf, long, count)
         down_read(&uts_sem);
         res = sysinfo_table[offset];
         len = strlen(res)+1;
-        if (len > count)
+        if ((unsigned long)len > (unsigned long)count)
                 len = count;
         if (copy_to_user(buf, res, len))
                 err = -EFAULT;
@@ -649,7 +649,7 @@ SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer,
                 return 1;
 
         case GSI_GET_HWRPB:
-                if (nbytes < sizeof(*hwrpb))
+                if (nbytes > sizeof(*hwrpb))
                         return -EINVAL;
                 if (copy_to_user(buffer, hwrpb, nbytes) != 0)
                         return -EFAULT;
@@ -1008,6 +1008,7 @@ SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options,
 {
         struct rusage r;
         long ret, err;
+        unsigned int status = 0;
         mm_segment_t old_fs;
 
         if (!ur)
@@ -1016,13 +1017,15 @@ SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options,
         old_fs = get_fs();
                 
         set_fs (KERNEL_DS);
-        ret = sys_wait4(pid, ustatus, options, (struct rusage __user *) &r);
+        ret = sys_wait4(pid, (unsigned int __user *) &status, options,
+                        (struct rusage __user *) &r);
         set_fs (old_fs);
 
         if (!access_ok(VERIFY_WRITE, ur, sizeof(*ur)))
                 return -EFAULT;
 
         err = 0;
+        err |= put_user(status, ustatus);
         err |= __put_user(r.ru_utime.tv_sec, &ur->ru_utime.tv_sec);
         err |= __put_user(r.ru_utime.tv_usec, &ur->ru_utime.tv_usec);
         err |= __put_user(r.ru_stime.tv_sec, &ur->ru_stime.tv_sec);
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index f9da41921c52..942fad97e447 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -691,9 +691,9 @@ proc_types:
 
                 .word   0x41069260              @ ARM926EJ-S (v5TEJ)
                 .word   0xff0ffff0
-                b       __arm926ejs_mmu_cache_on
-                b       __armv4_mmu_cache_off
-                b       __armv5tej_mmu_cache_flush
+                W(b)    __arm926ejs_mmu_cache_on
+                W(b)    __armv4_mmu_cache_off
+                W(b)    __armv5tej_mmu_cache_flush
 
                 .word   0x00007000              @ ARM7 IDs
                 .word   0x0000f000
diff --git a/arch/arm/configs/davinci_all_defconfig b/arch/arm/configs/davinci_all_defconfig
index 889922ad229c..67b5abb6f857 100644
--- a/arch/arm/configs/davinci_all_defconfig
+++ b/arch/arm/configs/davinci_all_defconfig
@@ -157,7 +157,7 @@ CONFIG_LEDS_GPIO=m
 CONFIG_LEDS_TRIGGERS=y
 CONFIG_LEDS_TRIGGER_TIMER=m
 CONFIG_LEDS_TRIGGER_HEARTBEAT=m
-CONFIG_RTC_CLASS=m
+CONFIG_RTC_CLASS=y
 CONFIG_EXT2_FS=y
 CONFIG_EXT3_FS=y
 CONFIG_XFS_FS=m
diff --git a/arch/arm/configs/netx_defconfig b/arch/arm/configs/netx_defconfig
index 316af5479d90..9c0ad7993986 100644
--- a/arch/arm/configs/netx_defconfig
+++ b/arch/arm/configs/netx_defconfig
@@ -60,7 +60,7 @@ CONFIG_FB_ARMCLCD=y
 # CONFIG_VGA_CONSOLE is not set
 CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_LOGO=y
-CONFIG_RTC_CLASS=m
+CONFIG_RTC_CLASS=y
 CONFIG_INOTIFY=y
 CONFIG_TMPFS=y
 CONFIG_JFFS2_FS=y
diff --git a/arch/arm/configs/viper_defconfig b/arch/arm/configs/viper_defconfig
index 8b0c717378fa..1d01ddd33122 100644
--- a/arch/arm/configs/viper_defconfig
+++ b/arch/arm/configs/viper_defconfig
@@ -142,7 +142,7 @@ CONFIG_USB_GADGETFS=m
 CONFIG_USB_FILE_STORAGE=m
 CONFIG_USB_G_SERIAL=m
 CONFIG_USB_G_PRINTER=m
-CONFIG_RTC_CLASS=m
+CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_DS1307=m
 CONFIG_RTC_DRV_SA1100=m
 CONFIG_EXT2_FS=m
diff --git a/arch/arm/configs/xcep_defconfig b/arch/arm/configs/xcep_defconfig
index 5b5504143647..721832ffe2d7 100644
--- a/arch/arm/configs/xcep_defconfig
+++ b/arch/arm/configs/xcep_defconfig
@@ -73,7 +73,7 @@ CONFIG_SENSORS_MAX6650=m
 # CONFIG_VGA_CONSOLE is not set
 # CONFIG_HID_SUPPORT is not set
 # CONFIG_USB_SUPPORT is not set
-CONFIG_RTC_CLASS=m
+CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_SA1100=m
 CONFIG_DMADEVICES=y
 # CONFIG_DNOTIFY is not set
diff --git a/arch/arm/configs/zeus_defconfig b/arch/arm/configs/zeus_defconfig
index 960f65514d88..59577ad3f4ef 100644
--- a/arch/arm/configs/zeus_defconfig
+++ b/arch/arm/configs/zeus_defconfig
@@ -158,7 +158,7 @@ CONFIG_LEDS_TRIGGER_HEARTBEAT=m
 CONFIG_LEDS_TRIGGER_BACKLIGHT=m
 CONFIG_LEDS_TRIGGER_GPIO=m
 CONFIG_LEDS_TRIGGER_DEFAULT_ON=m
-CONFIG_RTC_CLASS=m
+CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_ISL1208=m
 CONFIG_RTC_DRV_PXA=m
 CONFIG_EXT2_FS=y
diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c
index a701e4226a6c..0cdd7b456cb2 100644
--- a/arch/arm/kernel/devtree.c
+++ b/arch/arm/kernel/devtree.c
@@ -76,6 +76,9 @@ struct machine_desc * __init setup_machine_fdt(unsigned int dt_phys)
         unsigned long dt_root;
         const char *model;
 
+        if (!dt_phys)
+                return NULL;
+
         devtree = phys_to_virt(dt_phys);
 
         /* check device tree validity */
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index e8d885676807..90c62cd51ca9 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -435,6 +435,10 @@ __irq_usr:
         usr_entry
         kuser_cmpxchg_check
 
+#ifdef CONFIG_IRQSOFF_TRACER
+        bl      trace_hardirqs_off
+#endif
+
         get_thread_info tsk
 #ifdef CONFIG_PREEMPT
         ldr     r8, [tsk, #TI_PREEMPT]          @ get preempt count
@@ -453,7 +457,7 @@ __irq_usr:
 #endif
 
         mov     why, #0
-        b       ret_to_user
+        b       ret_to_user_from_irq
  UNWIND(.fnend          )
 ENDPROC(__irq_usr)
 
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 1e7b04a40a31..b2a27b6b0046 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -64,6 +64,7 @@ work_resched:
 ENTRY(ret_to_user)
 ret_slow_syscall:
         disable_irq                             @ disable interrupts
+ENTRY(ret_to_user_from_irq)
         ldr     r1, [tsk, #TI_FLAGS]
         tst     r1, #_TIF_WORK_MASK
         bne     work_pending
@@ -75,6 +76,7 @@ no_work_pending:
         arch_ret_to_user r1, lr
 
         restore_user_regs fast = 0, offset = 0
+ENDPROC(ret_to_user_from_irq)
 ENDPROC(ret_to_user)
 
 /*
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index d52eec268b47..6807cb1e76dd 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -139,7 +139,7 @@ static void dump_instr(const char *lvl, struct pt_regs *regs)
         fs = get_fs();
         set_fs(KERNEL_DS);
 
-        for (i = -4; i < 1; i++) {
+        for (i = -4; i < 1 + !!thumb; i++) {
                 unsigned int val, bad;
 
                 if (thumb)
@@ -563,7 +563,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
                 if (!pmd_present(*pmd))
                         goto bad_access;
                 pte = pte_offset_map_lock(mm, pmd, addr, &ptl);
-                if (!pte_present(*pte) || !pte_dirty(*pte)) {
+                if (!pte_present(*pte) || !pte_write(*pte) || !pte_dirty(*pte)) {
                         pte_unmap_unlock(pte, ptl);
                         goto bad_access;
                 }
diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c
index 4e66881c7aee..fc4e98ea7543 100644
--- a/arch/arm/mach-davinci/devices-da8xx.c
+++ b/arch/arm/mach-davinci/devices-da8xx.c
@@ -494,7 +494,7 @@ static struct platform_device da850_mcasp_device = {
         .resource       = da850_mcasp_resources,
 };
 
-struct platform_device davinci_pcm_device = {
+static struct platform_device davinci_pcm_device = {
         .name   = "davinci-pcm-audio",
         .id     = -1,
 };
diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c
index 8f4f736aa267..806a2f02b980 100644
--- a/arch/arm/mach-davinci/devices.c
+++ b/arch/arm/mach-davinci/devices.c
@@ -298,7 +298,7 @@ static void davinci_init_wdt(void)
 
 /*-------------------------------------------------------------------------*/
 
-struct platform_device davinci_pcm_device = {
+static struct platform_device davinci_pcm_device = {
         .name           = "davinci-pcm-audio",
         .id             = -1,
 };
diff --git a/arch/arm/mach-davinci/gpio.c b/arch/arm/mach-davinci/gpio.c
index a0b838894ac9..e7221398e5af 100644
--- a/arch/arm/mach-davinci/gpio.c
+++ b/arch/arm/mach-davinci/gpio.c
@@ -252,9 +252,11 @@ static struct irq_chip gpio_irqchip = {
 static void
 gpio_irq_handler(unsigned irq, struct irq_desc *desc)
 {
-        struct davinci_gpio_regs __iomem *g = irq2regs(irq);
+        struct davinci_gpio_regs __iomem *g;
         u32 mask = 0xffff;
 
+        g = (__force struct davinci_gpio_regs __iomem *) irq_desc_get_handler_data(desc);
+
         /* we only care about one bank */
         if (irq & 1)
                 mask <<= 16;
@@ -422,8 +424,7 @@ static int __init davinci_gpio_irq_setup(void)
 
                 /* set up all irqs in this bank */
                 irq_set_chained_handler(bank_irq, gpio_irq_handler);
-                irq_set_chip_data(bank_irq, (__force void *)g);
-                irq_set_handler_data(bank_irq, (void *)irq);
+                irq_set_handler_data(bank_irq, (__force void *)g);
 
                 for (i = 0; i < 16 && gpio < ngpio; i++, irq++, gpio++) {
                         irq_set_chip(irq, &gpio_irqchip);
diff --git a/arch/arm/mach-footbridge/dc21285-timer.c b/arch/arm/mach-footbridge/dc21285-timer.c
index 5f1f9867fc70..121ad1d4fa39 100644
--- a/arch/arm/mach-footbridge/dc21285-timer.c
+++ b/arch/arm/mach-footbridge/dc21285-timer.c
@@ -103,6 +103,7 @@ static void __init footbridge_timer_init(void)
         clockevents_calc_mult_shift(ce, mem_fclk_21285, 5);
         ce->max_delta_ns = clockevent_delta2ns(0xffffff, ce);
         ce->min_delta_ns = clockevent_delta2ns(0x000004, ce);
+        ce->cpumask = cpumask_of(smp_processor_id());
 
         clockevents_register_device(ce);
 }
diff --git a/arch/arm/mach-footbridge/include/mach/debug-macro.S b/arch/arm/mach-footbridge/include/mach/debug-macro.S
index 30b971d65815..1be2eeb7a0a0 100644
--- a/arch/arm/mach-footbridge/include/mach/debug-macro.S
+++ b/arch/arm/mach-footbridge/include/mach/debug-macro.S
@@ -26,6 +26,7 @@
 #include <asm/hardware/debug-8250.S>
 
 #else
+#include <mach/hardware.h>
         /* For EBSA285 debugging */
                 .equ    dc21285_high, ARMCSR_BASE & 0xff000000
                 .equ    dc21285_low,  ARMCSR_BASE & 0x00ffffff
@@ -36,8 +37,8 @@
                 .else
                 mov     \rp, #0
                 .endif
-                orr     \rv, \rp, #0x42000000
-                orr     \rp, \rp, #dc21285_high
+                orr     \rv, \rp, #dc21285_high
+                orr     \rp, \rp, #0x42000000
                 .endm
 
                 .macro  senduart,rd,rx
diff --git a/arch/arm/mach-mxs/ocotp.c b/arch/arm/mach-mxs/ocotp.c
index 65157a35dbba..54add60f94c9 100644
--- a/arch/arm/mach-mxs/ocotp.c
+++ b/arch/arm/mach-mxs/ocotp.c
@@ -16,6 +16,8 @@
 #include <linux/err.h>
 #include <linux/mutex.h>
 
+#include <asm/processor.h>      /* for cpu_relax() */
+
 #include <mach/mxs.h>
 
 #define OCOTP_WORD_OFFSET               0x20
diff --git a/arch/arm/mach-shmobile/board-ag5evm.c b/arch/arm/mach-shmobile/board-ag5evm.c
index c95258c274c1..1e2aba23e0d6 100644
--- a/arch/arm/mach-shmobile/board-ag5evm.c
+++ b/arch/arm/mach-shmobile/board-ag5evm.c
@@ -382,10 +382,8 @@ void ag5evm_sdhi1_set_pwr(struct platform_device *pdev, int state)
 }
 
 static struct sh_mobile_sdhi_info sh_sdhi1_platdata = {
-        .dma_slave_tx   = SHDMA_SLAVE_SDHI1_TX,
-        .dma_slave_rx   = SHDMA_SLAVE_SDHI1_RX,
         .tmio_flags     = TMIO_MMC_WRPROTECT_DISABLE,
-        .tmio_caps      = MMC_CAP_NONREMOVABLE,
+        .tmio_caps      = MMC_CAP_NONREMOVABLE | MMC_CAP_SDIO_IRQ,
         .tmio_ocr_mask  = MMC_VDD_32_33 | MMC_VDD_33_34,
         .set_pwr        = ag5evm_sdhi1_set_pwr,
 };
diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c
index 776f20560e72..7e1d37584321 100644
--- a/arch/arm/mach-shmobile/board-mackerel.c
+++ b/arch/arm/mach-shmobile/board-mackerel.c
@@ -126,7 +126,7 @@
  * ------+--------------------+--------------------+-------
  * IRQ0  | ICR1A.IRQ0SA=0010  | SDHI2 card detect  | Low
  * IRQ6  | ICR1A.IRQ6SA=0011  | Ether(LAN9220)     | High
- * IRQ7  | ICR1A.IRQ7SA=0010  | LCD Tuch Panel     | Low
+ * IRQ7  | ICR1A.IRQ7SA=0010  | LCD Touch Panel    | Low
  * IRQ8  | ICR2A.IRQ8SA=0010  | MMC/SD card detect | Low
  * IRQ9  | ICR2A.IRQ9SA=0010  | KEY(TCA6408)       | Low
  * IRQ21 | ICR4A.IRQ21SA=0011 | Sensor(ADXL345)    | High
@@ -165,10 +165,10 @@
  * USB1 can become Host by r8a66597, and become Function by renesas_usbhs.
  * But don't select both drivers in same time.
  * These uses same IRQ number for request_irq(), and aren't supporting
- * IRQF_SHARD / IORESOURCE_IRQ_SHAREABLE.
+ * IRQF_SHARED / IORESOURCE_IRQ_SHAREABLE.
  *
  * Actually these are old/new version of USB driver.
- * This mean its register will be broken if it supports SHARD IRQ,
+ * This mean its register will be broken if it supports shared IRQ,
  */
 
 /*
@@ -562,7 +562,121 @@ out:
                 clk_put(hdmi_ick);
 }
 
-/* USB1 (Host) */
+/* USBHS0 is connected to CN22 which takes a USB Mini-B plug
+ *
+ * The sh7372 SoC has IRQ7 set aside for USBHS0 hotplug,
+ * but on this particular board IRQ7 is already used by
+ * the touch screen. This leaves us with software polling.
+ */
+#define USBHS0_POLL_INTERVAL (HZ * 5)
+
+struct usbhs_private {
+        unsigned int usbphyaddr;
+        unsigned int usbcrcaddr;
+        struct renesas_usbhs_platform_info info;
+        struct delayed_work work;
+        struct platform_device *pdev;
+};
+
+#define usbhs_get_priv(pdev)                            \
+        container_of(renesas_usbhs_get_info(pdev),      \
+                     struct usbhs_private, info)
+
+#define usbhs_is_connected(priv)                        \
+        (!((1 << 7) & __raw_readw(priv->usbcrcaddr)))
+
+static int usbhs_get_vbus(struct platform_device *pdev)
+{
+        return usbhs_is_connected(usbhs_get_priv(pdev));
+}
+
+static void usbhs_phy_reset(struct platform_device *pdev)
+{
+        struct usbhs_private *priv = usbhs_get_priv(pdev);
+
+        /* init phy */
+        __raw_writew(0x8a0a, priv->usbcrcaddr);
+}
+
+static int usbhs0_get_id(struct platform_device *pdev)
+{
+        return USBHS_GADGET;
+}
+
+static void usbhs0_work_function(struct work_struct *work)
+{
+        struct usbhs_private *priv = container_of(work, struct usbhs_private,
+                                                  work.work);
+
+        renesas_usbhs_call_notify_hotplug(priv->pdev);
+        schedule_delayed_work(&priv->work, USBHS0_POLL_INTERVAL);
+}
+
+static int usbhs0_hardware_init(struct platform_device *pdev)
+{
+        struct usbhs_private *priv = usbhs_get_priv(pdev);
+
+        priv->pdev = pdev;
+        INIT_DELAYED_WORK(&priv->work, usbhs0_work_function);
+        schedule_delayed_work(&priv->work, USBHS0_POLL_INTERVAL);
+        return 0;
+}
+
+static void usbhs0_hardware_exit(struct platform_device *pdev)
+{
+        struct usbhs_private *priv = usbhs_get_priv(pdev);
+
+        cancel_delayed_work_sync(&priv->work);
+}
+
+static struct usbhs_private usbhs0_private = {
+        .usbcrcaddr     = 0xe605810c,           /* USBCR2 */
+        .info = {
+                .platform_callback = {
+                        .hardware_init  = usbhs0_hardware_init,
+                        .hardware_exit  = usbhs0_hardware_exit,
+                        .phy_reset      = usbhs_phy_reset,
+                        .get_id         = usbhs0_get_id,
+                        .get_vbus       = usbhs_get_vbus,
+                },
+                .driver_param = {
+                        .buswait_bwait  = 4,
+                },
+        },
+};
+
+static struct resource usbhs0_resources[] = {
+        [0] = {
+                .name   = "USBHS0",
+                .start  = 0xe6890000,
+                .end    = 0xe68900e6 - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = evt2irq(0x1ca0) /* USB0_USB0I0 */,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device usbhs0_device = {
+        .name   = "renesas_usbhs",
+        .id     = 0,
+        .dev = {
+                .platform_data          = &usbhs0_private.info,
+        },
+        .num_resources  = ARRAY_SIZE(usbhs0_resources),
+        .resource       = usbhs0_resources,
+};
+
+/* USBHS1 is connected to CN31 which takes a USB Mini-AB plug
+ *
+ * Use J30 to select between Host and Function. This setting
+ * can however not be detected by software. Hotplug of USBHS1
+ * is provided via IRQ8.
+ */
+#define IRQ8 evt2irq(0x0300)
+
+/* USBHS1 USB Host support via r8a66597_hcd */
 static void usb1_host_port_power(int port, int power)
 {
         if (!power) /* only power-on is supported for now */
@@ -579,9 +693,9 @@ static struct r8a66597_platdata usb1_host_data = {
 
 static struct resource usb1_host_resources[] = {
         [0] = {
-                .name   = "USBHS",
-                .start  = 0xE68B0000,
-                .end    = 0xE68B00E6 - 1,
+                .name   = "USBHS1",
+                .start  = 0xe68b0000,
+                .end    = 0xe68b00e6 - 1,
                 .flags  = IORESOURCE_MEM,
         },
         [1] = {
@@ -602,37 +716,14 @@ static struct platform_device usb1_host_device = {
         .resource       = usb1_host_resources,
 };
 
-/* USB1 (Function) */
+/* USBHS1 USB Function support via renesas_usbhs */
+
 #define USB_PHY_MODE            (1 << 4)
 #define USB_PHY_INT_EN          ((1 << 3) | (1 << 2))
 #define USB_PHY_ON              (1 << 1)
 #define USB_PHY_OFF             (1 << 0)
 #define USB_PHY_INT_CLR         (USB_PHY_ON | USB_PHY_OFF)
 
-struct usbhs_private {
-        unsigned int irq;
-        unsigned int usbphyaddr;
-        unsigned int usbcrcaddr;
-        struct renesas_usbhs_platform_info info;
-};
-
-#define usbhs_get_priv(pdev)                            \
-        container_of(renesas_usbhs_get_info(pdev),      \
-                     struct usbhs_private, info)
-
-#define usbhs_is_connected(priv)                        \
-        (!((1 << 7) & __raw_readw(priv->usbcrcaddr)))
-
-static int usbhs1_get_id(struct platform_device *pdev)
-{
-        return USBHS_GADGET;
-}
-
-static int usbhs1_get_vbus(struct platform_device *pdev)
-{
-        return usbhs_is_connected(usbhs_get_priv(pdev));
-}
-
 static irqreturn_t usbhs1_interrupt(int irq, void *data)
 {
         struct platform_device *pdev = data;
@@ -654,12 +745,10 @@ static int usbhs1_hardware_init(struct platform_device *pdev)
         struct usbhs_private *priv = usbhs_get_priv(pdev);
         int ret;
 
-        irq_set_irq_type(priv->irq, IRQ_TYPE_LEVEL_HIGH);
-
         /* clear interrupt status */
         __raw_writew(USB_PHY_MODE | USB_PHY_INT_CLR, priv->usbphyaddr);
 
-        ret = request_irq(priv->irq, usbhs1_interrupt, 0,
+        ret = request_irq(IRQ8, usbhs1_interrupt, IRQF_TRIGGER_HIGH,
                           dev_name(&pdev->dev), pdev);
         if (ret) {
                 dev_err(&pdev->dev, "request_irq err\n");
@@ -679,15 +768,12 @@ static void usbhs1_hardware_exit(struct platform_device *pdev)
         /* clear interrupt status */
         __raw_writew(USB_PHY_MODE | USB_PHY_INT_CLR, priv->usbphyaddr);
 
-        free_irq(priv->irq, pdev);
+        free_irq(IRQ8, pdev);
 }
 
-static void usbhs1_phy_reset(struct platform_device *pdev)
+static int usbhs1_get_id(struct platform_device *pdev)
 {
-        struct usbhs_private *priv = usbhs_get_priv(pdev);
-
-        /* init phy */
-        __raw_writew(0x8a0a, priv->usbcrcaddr);
+        return USBHS_GADGET;
 }
 
 static u32 usbhs1_pipe_cfg[] = {
@@ -710,16 +796,15 @@ static u32 usbhs1_pipe_cfg[] = {
 };
 
 static struct usbhs_private usbhs1_private = {
-        .irq            = evt2irq(0x0300),      /* IRQ8 */
-        .usbphyaddr     = 0xE60581E2,           /* USBPHY1INTAP */
-        .usbcrcaddr     = 0xE6058130,           /* USBCR4 */
+        .usbphyaddr     = 0xe60581e2,           /* USBPHY1INTAP */
+        .usbcrcaddr     = 0xe6058130,           /* USBCR4 */
         .info = {
                 .platform_callback = {
                         .hardware_init  = usbhs1_hardware_init,
                         .hardware_exit  = usbhs1_hardware_exit,
-                        .phy_reset      = usbhs1_phy_reset,
                         .get_id         = usbhs1_get_id,
-                        .get_vbus       = usbhs1_get_vbus,
+                        .phy_reset      = usbhs_phy_reset,
+                        .get_vbus       = usbhs_get_vbus,
                 },
                 .driver_param = {
                         .buswait_bwait  = 4,
@@ -731,9 +816,9 @@ static struct usbhs_private usbhs1_private = {
 
 static struct resource usbhs1_resources[] = {
         [0] = {
-                .name   = "USBHS",
-                .start  = 0xE68B0000,
-                .end    = 0xE68B00E6 - 1,
+                .name   = "USBHS1",
+                .start  = 0xe68b0000,
+                .end    = 0xe68b00e6 - 1,
                 .flags  = IORESOURCE_MEM,
         },
         [1] = {
@@ -752,7 +837,6 @@ static struct platform_device usbhs1_device = {
         .resource       = usbhs1_resources,
 };
 
-
 /* LED */
 static struct gpio_led mackerel_leds[] = {
         {
@@ -1203,6 +1287,7 @@ static struct platform_device *mackerel_devices[] __initdata = {
         &nor_flash_device,
         &smc911x_device,
         &lcdc_device,
+        &usbhs0_device,
         &usb1_host_device,
         &usbhs1_device,
         &leds_device,
@@ -1301,6 +1386,7 @@ static void __init mackerel_map_io(void)
 
 #define GPIO_PORT9CR    0xE6051009
 #define GPIO_PORT10CR   0xE605100A
+#define GPIO_PORT167CR  0xE60520A7
 #define GPIO_PORT168CR  0xE60520A8
 #define SRCR4           0xe61580bc
 #define USCCR1          0xE6058144
@@ -1354,17 +1440,17 @@ static void __init mackerel_init(void)
         gpio_request(GPIO_PORT151, NULL); /* LCDDON */
         gpio_direction_output(GPIO_PORT151, 1);
 
-        /* USB enable */
-        gpio_request(GPIO_FN_VBUS0_1,    NULL);
-        gpio_request(GPIO_FN_IDIN_1_18,  NULL);
-        gpio_request(GPIO_FN_PWEN_1_115, NULL);
-        gpio_request(GPIO_FN_OVCN_1_114, NULL);
-        gpio_request(GPIO_FN_EXTLP_1,    NULL);
-        gpio_request(GPIO_FN_OVCN2_1,    NULL);
-        gpio_pull_down(GPIO_PORT168CR);
-
-        /* setup USB phy */
-        __raw_writew(0x8a0a, 0xE6058130);       /* USBCR4 */
+        /* USBHS0 */
+        gpio_request(GPIO_FN_VBUS0_0, NULL);
+        gpio_pull_down(GPIO_PORT168CR); /* VBUS0_0 pull down */
+
+        /* USBHS1 */
+        gpio_request(GPIO_FN_VBUS0_1, NULL);
+        gpio_pull_down(GPIO_PORT167CR); /* VBUS0_1 pull down */
+        gpio_request(GPIO_FN_IDIN_1_113, NULL);
+
+        /* USB phy tweak to make the r8a66597_hcd host driver work */
+        __raw_writew(0x8a0a, 0xe6058130);       /* USBCR4 */
 
         /* enable FSI2 port A (ak4643) */
         gpio_request(GPIO_FN_FSIAIBT,   NULL);
diff --git a/arch/arm/mach-shmobile/intc-sh73a0.c b/arch/arm/mach-shmobile/intc-sh73a0.c
index 5d0e1503ece6..a911a60e7719 100644
--- a/arch/arm/mach-shmobile/intc-sh73a0.c
+++ b/arch/arm/mach-shmobile/intc-sh73a0.c
@@ -250,6 +250,11 @@ static irqreturn_t sh73a0_intcs_demux(int irq, void *dev_id)
         return IRQ_HANDLED;
 }
 
+static int sh73a0_set_wake(struct irq_data *data, unsigned int on)
+{
+        return 0; /* always allow wakeup */
+}
+
 void __init sh73a0_init_irq(void)
 {
         void __iomem *gic_dist_base = __io(0xf0001000);
@@ -257,6 +262,7 @@ void __init sh73a0_init_irq(void)
         void __iomem *intevtsa = ioremap_nocache(0xffd20100, PAGE_SIZE);
 
         gic_init(0, 29, gic_dist_base, gic_cpu_base);
+        gic_arch_extn.irq_set_wake = sh73a0_set_wake;
 
         register_intc_controller(&intcs_desc);
 
diff --git a/arch/arm/mach-shmobile/setup-sh7367.c b/arch/arm/mach-shmobile/setup-sh7367.c
index 2c10190dbb55..e546017f15de 100644
--- a/arch/arm/mach-shmobile/setup-sh7367.c
+++ b/arch/arm/mach-shmobile/setup-sh7367.c
@@ -38,7 +38,7 @@ static struct plat_sci_port scif0_platform_data = {
         .flags          = UPF_BOOT_AUTOCONF,
         .scscr          = SCSCR_RE | SCSCR_TE,
         .scbrr_algo_id  = SCBRR_ALGO_4,
-        .type           = PORT_SCIF,
+        .type           = PORT_SCIFA,
         .irqs           = { evt2irq(0xc00), evt2irq(0xc00),
                             evt2irq(0xc00), evt2irq(0xc00) },
 };
@@ -57,7 +57,7 @@ static struct plat_sci_port scif1_platform_data = {
         .flags          = UPF_BOOT_AUTOCONF,
         .scscr          = SCSCR_RE | SCSCR_TE,
         .scbrr_algo_id  = SCBRR_ALGO_4,
-        .type           = PORT_SCIF,
+        .type           = PORT_SCIFA,
         .irqs           = { evt2irq(0xc20), evt2irq(0xc20),
                             evt2irq(0xc20), evt2irq(0xc20) },
 };
@@ -76,7 +76,7 @@ static struct plat_sci_port scif2_platform_data = {
         .flags          = UPF_BOOT_AUTOCONF,
         .scscr          = SCSCR_RE | SCSCR_TE,
         .scbrr_algo_id  = SCBRR_ALGO_4,
-        .type           = PORT_SCIF,
+        .type           = PORT_SCIFA,
         .irqs           = { evt2irq(0xc40), evt2irq(0xc40),
                             evt2irq(0xc40), evt2irq(0xc40) },
 };
@@ -95,7 +95,7 @@ static struct plat_sci_port scif3_platform_data = {
         .flags          = UPF_BOOT_AUTOCONF,
         .scscr          = SCSCR_RE | SCSCR_TE,
         .scbrr_algo_id  = SCBRR_ALGO_4,
-        .type           = PORT_SCIF,
+        .type           = PORT_SCIFA,
         .irqs           = { evt2irq(0xc60), evt2irq(0xc60),
                             evt2irq(0xc60), evt2irq(0xc60) },
 };
@@ -114,7 +114,7 @@ static struct plat_sci_port scif4_platform_data = {
         .flags          = UPF_BOOT_AUTOCONF,
         .scscr          = SCSCR_RE | SCSCR_TE,
         .scbrr_algo_id  = SCBRR_ALGO_4,
-        .type           = PORT_SCIF,
+        .type           = PORT_SCIFA,
         .irqs           = { evt2irq(0xd20), evt2irq(0xd20),
                             evt2irq(0xd20), evt2irq(0xd20) },
 };
@@ -133,7 +133,7 @@ static struct plat_sci_port scif5_platform_data = {
         .flags          = UPF_BOOT_AUTOCONF,
         .scscr          = SCSCR_RE | SCSCR_TE,
         .scbrr_algo_id  = SCBRR_ALGO_4,
-        .type           = PORT_SCIF,
+        .type           = PORT_SCIFA,
         .irqs           = { evt2irq(0xd40), evt2irq(0xd40),
                             evt2irq(0xd40), evt2irq(0xd40) },
 };
@@ -152,7 +152,7 @@ static struct plat_sci_port scif6_platform_data = {
         .flags          = UPF_BOOT_AUTOCONF,
         .scscr          = SCSCR_RE | SCSCR_TE,
         .scbrr_algo_id  = SCBRR_ALGO_4,
-        .type           = PORT_SCIF,
+        .type           = PORT_SCIFB,
         .irqs           = { evt2irq(0xd60), evt2irq(0xd60),
                             evt2irq(0xd60), evt2irq(0xd60) },
 };
diff --git a/arch/arm/mach-u300/clock.h b/arch/arm/mach-u300/clock.h
index c34f3ea3017c..4f50ca8f901e 100644
--- a/arch/arm/mach-u300/clock.h
+++ b/arch/arm/mach-u300/clock.h
@@ -31,7 +31,7 @@ struct clk {
         bool reset;
         __u16 clk_val;
         __s8 usecount;
-        __u32 res_reg;
+        void __iomem * res_reg;
         __u16 res_mask;
 
         bool hw_ctrld;
diff --git a/arch/arm/mach-u300/include/mach/u300-regs.h b/arch/arm/mach-u300/include/mach/u300-regs.h
index 8b85df4c8d8f..035fdc9dbdb0 100644
--- a/arch/arm/mach-u300/include/mach/u300-regs.h
+++ b/arch/arm/mach-u300/include/mach/u300-regs.h
@@ -18,6 +18,12 @@
  * the defines are used for setting up the I/O memory mapping.
  */
 
+#ifdef __ASSEMBLER__
+#define IOMEM(a) (a)
+#else
+#define IOMEM(a) (void __iomem *) a
+#endif
+
 /* NAND Flash CS0 */
 #define U300_NAND_CS0_PHYS_BASE         0x80000000
 
@@ -48,13 +54,6 @@
 #endif
 
 /*
- * All the following peripherals are specified at their PHYSICAL address,
- * so if you need to access them (in the kernel), you MUST use the macros
- * defined in <asm/io.h> to map to the IO_ADDRESS_AHB() IO_ADDRESS_FAST()
- * etc.
- */
-
-/*
  * AHB peripherals
  */
 
@@ -63,11 +62,11 @@
 
 /* Vectored Interrupt Controller 0, servicing 32 interrupts */
 #define U300_INTCON0_BASE               (U300_AHB_PER_PHYS_BASE+0x1000)
-#define U300_INTCON0_VBASE              (U300_AHB_PER_VIRT_BASE+0x1000)
+#define U300_INTCON0_VBASE              IOMEM(U300_AHB_PER_VIRT_BASE+0x1000)
 
 /* Vectored Interrupt Controller 1, servicing 32 interrupts */
 #define U300_INTCON1_BASE               (U300_AHB_PER_PHYS_BASE+0x2000)
-#define U300_INTCON1_VBASE              (U300_AHB_PER_VIRT_BASE+0x2000)
+#define U300_INTCON1_VBASE              IOMEM(U300_AHB_PER_VIRT_BASE+0x2000)
 
 /* Memory Stick Pro (MSPRO) controller */
 #define U300_MSPRO_BASE                 (U300_AHB_PER_PHYS_BASE+0x3000)
@@ -115,7 +114,7 @@
 
 /* SYSCON */
 #define U300_SYSCON_BASE                (U300_SLOW_PER_PHYS_BASE+0x1000)
-#define U300_SYSCON_VBASE               (U300_SLOW_PER_VIRT_BASE+0x1000)
+#define U300_SYSCON_VBASE               IOMEM(U300_SLOW_PER_VIRT_BASE+0x1000)
 
 /* Watchdog */
 #define U300_WDOG_BASE                  (U300_SLOW_PER_PHYS_BASE+0x2000)
@@ -125,7 +124,7 @@
 
 /* APP side special timer */
 #define U300_TIMER_APP_BASE             (U300_SLOW_PER_PHYS_BASE+0x4000)
-#define U300_TIMER_APP_VBASE            (U300_SLOW_PER_VIRT_BASE+0x4000)
+#define U300_TIMER_APP_VBASE            IOMEM(U300_SLOW_PER_VIRT_BASE+0x4000)
 
 /* Keypad */
 #define U300_KEYPAD_BASE                (U300_SLOW_PER_PHYS_BASE+0x5000)
@@ -181,5 +180,4 @@
  * Virtual accessor macros for static devices
  */
 
-
 #endif
diff --git a/arch/arm/mach-u300/timer.c b/arch/arm/mach-u300/timer.c
index 891cf44591e0..18d7fa0603c2 100644
--- a/arch/arm/mach-u300/timer.c
+++ b/arch/arm/mach-u300/timer.c
@@ -411,8 +411,7 @@ static void __init u300_timer_init(void)
         /* Use general purpose timer 2 as clock source */
         if (clocksource_mmio_init(U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT2CC,
                         "GPT2", rate, 300, 32, clocksource_mmio_readl_up))
-                printk(KERN_ERR "timer: failed to initialize clock "
-                       "source %s\n", clocksource_u300_1mhz.name);
+                pr_err("timer: failed to initialize U300 clock source\n");
 
         clockevents_calc_mult_shift(&clockevent_u300_1mhz,
                                     rate, APPTIMER_MIN_RANGE);
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
index 285edcd2da2a..9e6b93b1a043 100644
--- a/arch/arm/mach-vexpress/v2m.c
+++ b/arch/arm/mach-vexpress/v2m.c
@@ -46,12 +46,6 @@ static struct map_desc v2m_io_desc[] __initdata = {
         },
 };
 
-static void __init v2m_init_early(void)
-{
-        ct_desc->init_early();
-        versatile_sched_clock_init(MMIO_P2V(V2M_SYS_24MHZ), 24000000);
-}
-
 static void __init v2m_timer_init(void)
 {
         u32 scctrl;
@@ -365,6 +359,13 @@ static struct clk_lookup v2m_lookups[] = {
         },
 };
 
+static void __init v2m_init_early(void)
+{
+        ct_desc->init_early();
+        clkdev_add_table(v2m_lookups, ARRAY_SIZE(v2m_lookups));
+        versatile_sched_clock_init(MMIO_P2V(V2M_SYS_24MHZ), 24000000);
+}
+
 static void v2m_power_off(void)
 {
         if (v2m_cfg_write(SYS_CFG_SHUTDOWN | SYS_CFG_SITE_MB, 0))
@@ -418,8 +419,6 @@ static void __init v2m_init(void)
 {
         int i;
 
-        clkdev_add_table(v2m_lookups, ARRAY_SIZE(v2m_lookups));
-
         platform_device_register(&v2m_pcie_i2c_device);
         platform_device_register(&v2m_ddc_i2c_device);
         platform_device_register(&v2m_flash_device);
diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c
index 8bfae964b133..b0ee9ba3cfab 100644
--- a/arch/arm/mm/context.c
+++ b/arch/arm/mm/context.c
@@ -24,7 +24,9 @@ DEFINE_PER_CPU(struct mm_struct *, current_mm);
 
 /*
  * We fork()ed a process, and we need a new context for the child
- * to run in.
+ * to run in.  We reserve version 0 for initial tasks so we will
+ * always allocate an ASID. The ASID 0 is reserved for the TTBR
+ * register changing sequence.
  */
 void __init_new_context(struct task_struct *tsk, struct mm_struct *mm)
 {
@@ -34,11 +36,8 @@ void __init_new_context(struct task_struct *tsk, struct mm_struct *mm)
 
 static void flush_context(void)
 {
-        u32 ttb;
-        /* Copy TTBR1 into TTBR0 */
-        asm volatile("mrc       p15, 0, %0, c2, c0, 1\n"
-                     "mcr       p15, 0, %0, c2, c0, 0"
-                     : "=r" (ttb));
+        /* set the reserved ASID before flushing the TLB */
+        asm("mcr        p15, 0, %0, c13, c0, 1\n" : : "r" (0));
         isb();
         local_flush_tlb_all();
         if (icache_is_vivt_asid_tagged()) {
@@ -94,7 +93,7 @@ static void reset_context(void *info)
                 return;
 
         smp_rmb();
-        asid = cpu_last_asid + cpu;
+        asid = cpu_last_asid + cpu + 1;
 
         flush_context();
         set_mm_context(mm, asid);
@@ -144,13 +143,13 @@ void __new_context(struct mm_struct *mm)
          * to start a new version and flush the TLB.
          */
         if (unlikely((asid & ~ASID_MASK) == 0)) {
-                asid = cpu_last_asid + smp_processor_id();
+                asid = cpu_last_asid + smp_processor_id() + 1;
                 flush_context();
 #ifdef CONFIG_SMP
                 smp_wmb();
                 smp_call_function(reset_context, NULL, 1);
 #endif
-                cpu_last_asid += NR_CPUS - 1;
+                cpu_last_asid += NR_CPUS;
         }
 
         set_mm_context(mm, asid);
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 2c2cce9cd8c8..c19571c40a21 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -331,6 +331,12 @@ void __init arm_memblock_init(struct meminfo *mi, struct machine_desc *mdesc)
 #endif
 #ifdef CONFIG_BLK_DEV_INITRD
         if (phys_initrd_size &&
+            !memblock_is_region_memory(phys_initrd_start, phys_initrd_size)) {
+                pr_err("INITRD: 0x%08lx+0x%08lx is not a memory region - disabling initrd\n",
+                       phys_initrd_start, phys_initrd_size);
+                phys_initrd_start = phys_initrd_size = 0;
+        }
+        if (phys_initrd_size &&
             memblock_is_region_reserved(phys_initrd_start, phys_initrd_size)) {
                 pr_err("INITRD: 0x%08lx+0x%08lx overlaps in-use memory region - disabling initrd\n",
                        phys_initrd_start, phys_initrd_size);
@@ -635,7 +641,8 @@ void __init mem_init(void)
                         "    modules : 0x%08lx - 0x%08lx   (%4ld MB)\n"
                         "      .init : 0x%p" " - 0x%p" "   (%4d kB)\n"
                         "      .text : 0x%p" " - 0x%p" "   (%4d kB)\n"
-                        "      .data : 0x%p" " - 0x%p" "   (%4d kB)\n",
+                        "      .data : 0x%p" " - 0x%p" "   (%4d kB)\n"
+                        "       .bss : 0x%p" " - 0x%p" "   (%4d kB)\n",
 
                         MLK(UL(CONFIG_VECTORS_BASE), UL(CONFIG_VECTORS_BASE) +
                                 (PAGE_SIZE)),
@@ -657,7 +664,8 @@ void __init mem_init(void)
 
                         MLK_ROUNDUP(__init_begin, __init_end),
                         MLK_ROUNDUP(_text, _etext),
-                        MLK_ROUNDUP(_sdata, _edata));
+                        MLK_ROUNDUP(_sdata, _edata),
+                        MLK_ROUNDUP(__bss_start, __bss_stop));
 
 #undef MLK
 #undef MLM
diff --git a/arch/arm/mm/proc-arm7tdmi.S b/arch/arm/mm/proc-arm7tdmi.S
index e4c165ca6696..537ffcb0646d 100644
--- a/arch/arm/mm/proc-arm7tdmi.S
+++ b/arch/arm/mm/proc-arm7tdmi.S
@@ -146,7 +146,7 @@ __arm7tdmi_proc_info:
                 .long   0
                 .long   0
                 .long   v4_cache_fns
-                .size   __arm7tdmi_proc_info, . - __arm7dmi_proc_info
+                .size   __arm7tdmi_proc_info, . - __arm7tdmi_proc_info
 
                 .type   __triscenda7_proc_info, #object
 __triscenda7_proc_info:
diff --git a/arch/arm/mm/proc-arm9tdmi.S b/arch/arm/mm/proc-arm9tdmi.S
index 7b7ebd4d096d..546b54da1005 100644
--- a/arch/arm/mm/proc-arm9tdmi.S
+++ b/arch/arm/mm/proc-arm9tdmi.S
@@ -116,7 +116,7 @@ __arm9tdmi_proc_info:
                 .long   0
                 .long   0
                 .long   v4_cache_fns
-                .size   __arm9tdmi_proc_info, . - __arm9dmi_proc_info
+                .size   __arm9tdmi_proc_info, . - __arm9tdmi_proc_info
 
                 .type   __p2001_proc_info, #object
 __p2001_proc_info:
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index b3b566ec83d3..3c3867850a30 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -108,16 +108,18 @@ ENTRY(cpu_v7_switch_mm)
 #ifdef CONFIG_ARM_ERRATA_430973
         mcr     p15, 0, r2, c7, c5, 6           @ flush BTAC/BTB
 #endif
-        mrc     p15, 0, r2, c2, c0, 1           @ load TTB 1
-        mcr     p15, 0, r2, c2, c0, 0           @ into TTB 0
+#ifdef CONFIG_ARM_ERRATA_754322
+        dsb
+#endif
+        mcr     p15, 0, r2, c13, c0, 1          @ set reserved context ID
+        isb
+1:      mcr     p15, 0, r0, c2, c0, 0           @ set TTB 0
         isb
 #ifdef CONFIG_ARM_ERRATA_754322
         dsb
 #endif
         mcr     p15, 0, r1, c13, c0, 1          @ set context ID
         isb
-        mcr     p15, 0, r0, c2, c0, 0           @ set TTB 0
-        isb
 #endif
         mov     pc, lr
 ENDPROC(cpu_v7_switch_mm)
diff --git a/arch/arm/plat-mxc/devices/platform-imx-dma.c b/arch/arm/plat-mxc/devices/platform-imx-dma.c
index 3538b85ede91..b130f60ca6b7 100644
--- a/arch/arm/plat-mxc/devices/platform-imx-dma.c
+++ b/arch/arm/plat-mxc/devices/platform-imx-dma.c
@@ -139,7 +139,7 @@ static struct sdma_script_start_addrs addr_imx35_to2 = {
 #endif
 
 #ifdef CONFIG_SOC_IMX51
-static struct sdma_script_start_addrs addr_imx51_to1 = {
+static struct sdma_script_start_addrs addr_imx51 = {
         .ap_2_ap_addr = 642,
         .uart_2_mcu_addr = 817,
         .mcu_2_app_addr = 747,
@@ -196,7 +196,9 @@ static int __init imxXX_add_imx_dma(void)
 
 #if defined(CONFIG_SOC_IMX51)
         if (cpu_is_mx51()) {
-                imx51_imx_sdma_data.pdata.script_addrs = &addr_imx51_to1;
+                int to_version = mx51_revision() >> 4;
+                imx51_imx_sdma_data.pdata.to_version = to_version;
+                imx51_imx_sdma_data.pdata.script_addrs = &addr_imx51;
                 ret = imx_add_imx_sdma(&imx51_imx_sdma_data);
         } else
 #endif
diff --git a/arch/avr32/configs/atngw100_defconfig b/arch/avr32/configs/atngw100_defconfig
index 6f9ca56de1f6..a06bfccc2840 100644
--- a/arch/avr32/configs/atngw100_defconfig
+++ b/arch/avr32/configs/atngw100_defconfig
@@ -5,6 +5,7 @@ CONFIG_POSIX_MQUEUE=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_RELAY=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 # CONFIG_COMPAT_BRK is not set
diff --git a/arch/avr32/configs/atngw100_evklcd100_defconfig b/arch/avr32/configs/atngw100_evklcd100_defconfig
index 7eece0af34c9..d8f1fe80d210 100644
--- a/arch/avr32/configs/atngw100_evklcd100_defconfig
+++ b/arch/avr32/configs/atngw100_evklcd100_defconfig
@@ -5,6 +5,7 @@ CONFIG_POSIX_MQUEUE=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_RELAY=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 # CONFIG_COMPAT_BRK is not set
diff --git a/arch/avr32/configs/atngw100_evklcd101_defconfig b/arch/avr32/configs/atngw100_evklcd101_defconfig
index 387eb9d6e423..d4c5b19ec950 100644
--- a/arch/avr32/configs/atngw100_evklcd101_defconfig
+++ b/arch/avr32/configs/atngw100_evklcd101_defconfig
@@ -5,6 +5,7 @@ CONFIG_POSIX_MQUEUE=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_RELAY=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 # CONFIG_COMPAT_BRK is not set
diff --git a/arch/avr32/configs/atngw100_mrmt_defconfig b/arch/avr32/configs/atngw100_mrmt_defconfig
index 19f6ceeeff7b..77ca4f905d2c 100644
--- a/arch/avr32/configs/atngw100_mrmt_defconfig
+++ b/arch/avr32/configs/atngw100_mrmt_defconfig
@@ -7,6 +7,7 @@ CONFIG_BSD_PROCESS_ACCT_V3=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_SYSFS_DEPRECATED_V2=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 # CONFIG_SLUB_DEBUG is not set
@@ -109,7 +110,7 @@ CONFIG_LEDS_GPIO=y
 CONFIG_LEDS_TRIGGERS=y
 CONFIG_LEDS_TRIGGER_TIMER=y
 CONFIG_LEDS_TRIGGER_HEARTBEAT=y
-CONFIG_RTC_CLASS=m
+CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_S35390A=m
 CONFIG_RTC_DRV_AT32AP700X=m
 CONFIG_DMADEVICES=y
diff --git a/arch/avr32/configs/atngw100mkii_defconfig b/arch/avr32/configs/atngw100mkii_defconfig
index f0fe237133a9..6e0dca4d3131 100644
--- a/arch/avr32/configs/atngw100mkii_defconfig
+++ b/arch/avr32/configs/atngw100mkii_defconfig
@@ -5,6 +5,7 @@ CONFIG_POSIX_MQUEUE=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_RELAY=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 # CONFIG_COMPAT_BRK is not set
diff --git a/arch/avr32/configs/atngw100mkii_evklcd100_defconfig b/arch/avr32/configs/atngw100mkii_evklcd100_defconfig
index e4a7c1dc8380..7f2a344a5fa8 100644
--- a/arch/avr32/configs/atngw100mkii_evklcd100_defconfig
+++ b/arch/avr32/configs/atngw100mkii_evklcd100_defconfig
@@ -5,6 +5,7 @@ CONFIG_POSIX_MQUEUE=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_RELAY=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 # CONFIG_COMPAT_BRK is not set
diff --git a/arch/avr32/configs/atngw100mkii_evklcd101_defconfig b/arch/avr32/configs/atngw100mkii_evklcd101_defconfig
index 6f37f70c2c37..085eeba88f67 100644
--- a/arch/avr32/configs/atngw100mkii_evklcd101_defconfig
+++ b/arch/avr32/configs/atngw100mkii_evklcd101_defconfig
@@ -5,6 +5,7 @@ CONFIG_POSIX_MQUEUE=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_RELAY=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 # CONFIG_COMPAT_BRK is not set
diff --git a/arch/avr32/configs/atstk1002_defconfig b/arch/avr32/configs/atstk1002_defconfig
index 4fb01f5ab42f..d1a887e64055 100644
--- a/arch/avr32/configs/atstk1002_defconfig
+++ b/arch/avr32/configs/atstk1002_defconfig
@@ -5,6 +5,7 @@ CONFIG_POSIX_MQUEUE=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_RELAY=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 # CONFIG_COMPAT_BRK is not set
diff --git a/arch/avr32/configs/atstk1003_defconfig b/arch/avr32/configs/atstk1003_defconfig
index 9faaf9b900f2..956f2819ad45 100644
--- a/arch/avr32/configs/atstk1003_defconfig
+++ b/arch/avr32/configs/atstk1003_defconfig
@@ -5,6 +5,7 @@ CONFIG_POSIX_MQUEUE=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_RELAY=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 # CONFIG_COMPAT_BRK is not set
diff --git a/arch/avr32/configs/atstk1004_defconfig b/arch/avr32/configs/atstk1004_defconfig
index 3d2a5d85f970..40c69f38c61a 100644
--- a/arch/avr32/configs/atstk1004_defconfig
+++ b/arch/avr32/configs/atstk1004_defconfig
@@ -5,6 +5,7 @@ CONFIG_POSIX_MQUEUE=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_RELAY=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 # CONFIG_COMPAT_BRK is not set
diff --git a/arch/avr32/configs/atstk1006_defconfig b/arch/avr32/configs/atstk1006_defconfig
index 1ed8f22d4fe2..511eb8af356d 100644
--- a/arch/avr32/configs/atstk1006_defconfig
+++ b/arch/avr32/configs/atstk1006_defconfig
@@ -5,6 +5,7 @@ CONFIG_POSIX_MQUEUE=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_RELAY=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 # CONFIG_COMPAT_BRK is not set
diff --git a/arch/avr32/configs/favr-32_defconfig b/arch/avr32/configs/favr-32_defconfig
index aeadc955db32..19973b06170c 100644
--- a/arch/avr32/configs/favr-32_defconfig
+++ b/arch/avr32/configs/favr-32_defconfig
@@ -6,6 +6,7 @@ CONFIG_LOG_BUF_SHIFT=14
 CONFIG_SYSFS_DEPRECATED_V2=y
 CONFIG_RELAY=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 # CONFIG_COMPAT_BRK is not set
diff --git a/arch/avr32/configs/hammerhead_defconfig b/arch/avr32/configs/hammerhead_defconfig
index 1692beeb7ed3..6f45681196d1 100644
--- a/arch/avr32/configs/hammerhead_defconfig
+++ b/arch/avr32/configs/hammerhead_defconfig
@@ -7,6 +7,7 @@ CONFIG_BSD_PROCESS_ACCT_V3=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_SYSFS_DEPRECATED_V2=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 # CONFIG_COMPAT_BRK is not set
diff --git a/arch/avr32/configs/merisc_defconfig b/arch/avr32/configs/merisc_defconfig
index 8b670a6530bf..3befab966827 100644
--- a/arch/avr32/configs/merisc_defconfig
+++ b/arch/avr32/configs/merisc_defconfig
@@ -7,6 +7,7 @@ CONFIG_BSD_PROCESS_ACCT_V3=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_SYSFS_DEPRECATED_V2=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 CONFIG_MODULES=y
diff --git a/arch/avr32/configs/mimc200_defconfig b/arch/avr32/configs/mimc200_defconfig
index 5a51f2e7ffb9..1bee51f22154 100644
--- a/arch/avr32/configs/mimc200_defconfig
+++ b/arch/avr32/configs/mimc200_defconfig
@@ -7,6 +7,7 @@ CONFIG_BSD_PROCESS_ACCT_V3=y
 CONFIG_LOG_BUF_SHIFT=14
 CONFIG_SYSFS_DEPRECATED_V2=y
 CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
 # CONFIG_SYSCTL_SYSCALL is not set
 # CONFIG_BASE_FULL is not set
 # CONFIG_COMPAT_BRK is not set
diff --git a/arch/avr32/include/asm/processor.h b/arch/avr32/include/asm/processor.h
index 49a88f5a9d2f..108502bc6770 100644
--- a/arch/avr32/include/asm/processor.h
+++ b/arch/avr32/include/asm/processor.h
@@ -131,7 +131,6 @@ struct thread_struct {
  */
 #define start_thread(regs, new_pc, new_sp)       \
         do {                                     \
-                set_fs(USER_DS);                 \
                 memset(regs, 0, sizeof(*regs));  \
                 regs->sr = MODE_USER;            \
                 regs->pc = new_pc & ~1;          \
diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
index aa677e2a3823..7fbf0dcb9afe 100644
--- a/arch/avr32/mach-at32ap/at32ap700x.c
+++ b/arch/avr32/mach-at32ap/at32ap700x.c
@@ -1043,8 +1043,9 @@ void __init at32_map_usart(unsigned int hw_id, unsigned int line, int flags)
                 data->regs = (void __iomem *)pdev->resource[0].start;
         }
 
+        pdev->id = line;
         pdata = pdev->dev.platform_data;
-        pdata->num = portnr;
+        pdata->num = line;
         at32_usarts[line] = pdev;
 }
 
diff --git a/arch/avr32/mach-at32ap/include/mach/cpu.h b/arch/avr32/mach-at32ap/include/mach/cpu.h
index 9c96a130f3a8..8181293115e4 100644
--- a/arch/avr32/mach-at32ap/include/mach/cpu.h
+++ b/arch/avr32/mach-at32ap/include/mach/cpu.h
@@ -31,8 +31,20 @@
 #define cpu_is_at91sam9263()    (0)
 #define cpu_is_at91sam9rl()     (0)
 #define cpu_is_at91cap9()       (0)
+#define cpu_is_at91cap9_revB()  (0)
+#define cpu_is_at91cap9_revC()  (0)
 #define cpu_is_at91sam9g10()    (0)
+#define cpu_is_at91sam9g20()    (0)
 #define cpu_is_at91sam9g45()    (0)
 #define cpu_is_at91sam9g45es()  (0)
+#define cpu_is_at91sam9m10()    (0)
+#define cpu_is_at91sam9g46()    (0)
+#define cpu_is_at91sam9m11()    (0)
+#define cpu_is_at91sam9x5()     (0)
+#define cpu_is_at91sam9g15()    (0)
+#define cpu_is_at91sam9g35()    (0)
+#define cpu_is_at91sam9x35()    (0)
+#define cpu_is_at91sam9g25()    (0)
+#define cpu_is_at91sam9x25()    (0)
 
 #endif /* __ASM_ARCH_CPU_H */
diff --git a/arch/avr32/mach-at32ap/intc.c b/arch/avr32/mach-at32ap/intc.c
index 3e3646186c9f..c9ac2f8e8f64 100644
--- a/arch/avr32/mach-at32ap/intc.c
+++ b/arch/avr32/mach-at32ap/intc.c
@@ -167,14 +167,12 @@ static int intc_suspend(void)
         return 0;
 }
 
-static int intc_resume(void)
+static void intc_resume(void)
 {
         int i;
 
         for (i = 0; i < 64; i++)
                 intc_writel(&intc0, INTPR0 + 4 * i, intc0.saved_ipr[i]);
-
-        return 0;
 }
 #else
 #define intc_suspend    NULL
diff --git a/arch/blackfin/configs/CM-BF548_defconfig b/arch/blackfin/configs/CM-BF548_defconfig
index 31d954216c05..9f1d08401fca 100644
--- a/arch/blackfin/configs/CM-BF548_defconfig
+++ b/arch/blackfin/configs/CM-BF548_defconfig
@@ -112,7 +112,7 @@ CONFIG_USB_G_SERIAL=m
 CONFIG_USB_G_PRINTER=m
 CONFIG_MMC=m
 CONFIG_SDH_BFIN=m
-CONFIG_RTC_CLASS=m
+CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_BFIN=m
 CONFIG_EXT2_FS=m
 # CONFIG_DNOTIFY is not set
diff --git a/arch/m68k/Kconfig.nommu b/arch/m68k/Kconfig.nommu
index fc98f9b9d4d2..b004dc1b1710 100644
--- a/arch/m68k/Kconfig.nommu
+++ b/arch/m68k/Kconfig.nommu
@@ -14,6 +14,33 @@ config GENERIC_CLOCKEVENTS
         bool
         default n
 
+config M68000
+        bool
+        help
+          The Freescale (was Motorola) 68000 CPU is the first generation of
+          the well known M68K family of processors. The CPU core as well as
+          being available as a stand alone CPU was also used in many
+          System-On-Chip devices (eg 68328, 68302, etc). It does not contain
+          a paging MMU.
+
+config MCPU32
+        bool
+        help
+          The Freescale (was then Motorola) CPU32 is a CPU core that is
+          based on the 68020 processor. For the most part it is used in
+          System-On-Chip parts, and does not contain a paging MMU.
+
+config COLDFIRE
+        bool
+        select GENERIC_GPIO
+        select ARCH_REQUIRE_GPIOLIB
+        help
+          The Freescale ColdFire family of processors is a modern derivitive
+          of the 68000 processor family. They are mainly targeted at embedded
+          applications, and are all System-On-Chip (SOC) devices, as opposed
+          to stand alone CPUs. They implement a subset of the original 68000
+          processor instruction set.
+
 config COLDFIRE_SW_A7
         bool
         default n
@@ -36,26 +63,31 @@ choice
 
 config M68328
         bool "MC68328"
+        select M68000
         help
           Motorola 68328 processor support.
 
 config M68EZ328
         bool "MC68EZ328"
+        select M68000
         help
           Motorola 68EX328 processor support.
 
 config M68VZ328
         bool "MC68VZ328"
+        select M68000
         help
           Motorola 68VZ328 processor support.
 
 config M68360
         bool "MC68360"
+        select MCPU32
         help
           Motorola 68360 processor support.
 
 config M5206
         bool "MCF5206"
+        select COLDFIRE
         select COLDFIRE_SW_A7
         select HAVE_MBAR
         help
@@ -63,6 +95,7 @@ config M5206
 
 config M5206e
         bool "MCF5206e"
+        select COLDFIRE
         select COLDFIRE_SW_A7
         select HAVE_MBAR
         help
@@ -70,6 +103,7 @@ config M5206e
 
 config M520x
         bool "MCF520x"
+        select COLDFIRE
         select GENERIC_CLOCKEVENTS
         select HAVE_CACHE_SPLIT
         help
@@ -77,6 +111,7 @@ config M520x
 
 config M523x
         bool "MCF523x"
+        select COLDFIRE
         select GENERIC_CLOCKEVENTS
         select HAVE_CACHE_SPLIT
         select HAVE_IPSBAR
@@ -85,6 +120,7 @@ config M523x
 
 config M5249
         bool "MCF5249"
+        select COLDFIRE
         select COLDFIRE_SW_A7
         select HAVE_MBAR
         help
@@ -92,6 +128,7 @@ config M5249
 
 config M5271
         bool "MCF5271"
+        select COLDFIRE
         select HAVE_CACHE_SPLIT
         select HAVE_IPSBAR
         help
@@ -99,6 +136,7 @@ config M5271
 
 config M5272
         bool "MCF5272"
+        select COLDFIRE
         select COLDFIRE_SW_A7
         select HAVE_MBAR
         help
@@ -106,6 +144,7 @@ config M5272
 
 config M5275
         bool "MCF5275"
+        select COLDFIRE
         select HAVE_CACHE_SPLIT
         select HAVE_IPSBAR
         help
@@ -113,6 +152,7 @@ config M5275
 
 config M528x
         bool "MCF528x"
+        select COLDFIRE
         select GENERIC_CLOCKEVENTS
         select HAVE_CACHE_SPLIT
         select HAVE_IPSBAR
@@ -121,6 +161,7 @@ config M528x
 
 config M5307
         bool "MCF5307"
+        select COLDFIRE
         select COLDFIRE_SW_A7
         select HAVE_CACHE_CB
         select HAVE_MBAR
@@ -129,12 +170,14 @@ config M5307
 
 config M532x
         bool "MCF532x"
+        select COLDFIRE
         select HAVE_CACHE_CB
         help
           Freescale (Motorola) ColdFire 532x processor support.
 
 config M5407
         bool "MCF5407"
+        select COLDFIRE
         select COLDFIRE_SW_A7
         select HAVE_CACHE_CB
         select HAVE_MBAR
@@ -143,6 +186,7 @@ config M5407
 
 config M547x
         bool "MCF547x"
+        select COLDFIRE
         select HAVE_CACHE_CB
         select HAVE_MBAR
         help
@@ -150,6 +194,7 @@ config M547x
 
 config M548x
         bool "MCF548x"
+        select COLDFIRE
         select HAVE_CACHE_CB
         select HAVE_MBAR
         help
@@ -168,13 +213,6 @@ config M54xx
         depends on (M548x || M547x)
         default y
 
-config COLDFIRE
-        bool
-        depends on (M5206 || M5206e || M520x || M523x || M5249 || M527x || M5272 || M528x || M5307 || M532x || M5407 || M54xx)
-        select GENERIC_GPIO
-        select ARCH_REQUIRE_GPIOLIB
-        default y
-
 config CLOCK_SET
         bool "Enable setting the CPU clock frequency"
         default n
diff --git a/arch/m68k/kernel/m68k_ksyms.c b/arch/m68k/kernel/m68k_ksyms.c
index 33f82769547c..1b7a14d1a000 100644
--- a/arch/m68k/kernel/m68k_ksyms.c
+++ b/arch/m68k/kernel/m68k_ksyms.c
@@ -14,8 +14,7 @@ EXPORT_SYMBOL(__ashrdi3);
 EXPORT_SYMBOL(__lshrdi3);
 EXPORT_SYMBOL(__muldi3);
 
-#if !defined(__mc68020__) && !defined(__mc68030__) && \
-    !defined(__mc68040__) && !defined(__mc68060__) && !defined(__mcpu32__)
+#if defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE)
 /*
  * Simpler 68k and ColdFire parts also need a few other gcc functions.
  */
diff --git a/arch/m68k/kernel/vmlinux.lds_no.S b/arch/m68k/kernel/vmlinux.lds_no.S
index f4d715cdca0e..7dc4087a9545 100644
--- a/arch/m68k/kernel/vmlinux.lds_no.S
+++ b/arch/m68k/kernel/vmlinux.lds_no.S
@@ -84,52 +84,52 @@ SECTIONS {
                 /* Kernel symbol table: Normal symbols */
                 . = ALIGN(4);
                 __start___ksymtab = .;
-                *(__ksymtab)
+                *(SORT(___ksymtab+*))
                 __stop___ksymtab = .;
 
                 /* Kernel symbol table: GPL-only symbols */
                 __start___ksymtab_gpl = .;
-                *(__ksymtab_gpl)
+                *(SORT(___ksymtab_gpl+*))
                 __stop___ksymtab_gpl = .;
 
                 /* Kernel symbol table: Normal unused symbols */
                 __start___ksymtab_unused = .;
-                *(__ksymtab_unused)
+                *(SORT(___ksymtab_unused+*))
                 __stop___ksymtab_unused = .;
 
                 /* Kernel symbol table: GPL-only unused symbols */
                 __start___ksymtab_unused_gpl = .;
-                *(__ksymtab_unused_gpl)
+                *(SORT(___ksymtab_unused_gpl+*))
                 __stop___ksymtab_unused_gpl = .;
 
                 /* Kernel symbol table: GPL-future symbols */
                 __start___ksymtab_gpl_future = .;
-                *(__ksymtab_gpl_future)
+                *(SORT(___ksymtab_gpl_future+*))
                 __stop___ksymtab_gpl_future = .;
 
                 /* Kernel symbol table: Normal symbols */
                 __start___kcrctab = .;
-                *(__kcrctab)
+                *(SORT(___kcrctab+*))
                 __stop___kcrctab = .;
 
                 /* Kernel symbol table: GPL-only symbols */
                 __start___kcrctab_gpl = .;
-                *(__kcrctab_gpl)
+                *(SORT(___kcrctab_gpl+*))
                 __stop___kcrctab_gpl = .;
 
                 /* Kernel symbol table: Normal unused symbols */
                 __start___kcrctab_unused = .;
-                *(__kcrctab_unused)
+                *(SORT(___kcrctab_unused+*))
                 __stop___kcrctab_unused = .;
 
                 /* Kernel symbol table: GPL-only unused symbols */
                 __start___kcrctab_unused_gpl = .;
-                *(__kcrctab_unused_gpl)
+                *(SORT(___kcrctab_unused_gpl+*))
                 __stop___kcrctab_unused_gpl = .;
 
                 /* Kernel symbol table: GPL-future symbols */
                 __start___kcrctab_gpl_future = .;
-                *(__kcrctab_gpl_future)
+                *(SORT(___kcrctab_gpl_future+*))
                 __stop___kcrctab_gpl_future = .;
 
                 /* Kernel symbol table: strings */
diff --git a/arch/m68k/lib/memcpy.c b/arch/m68k/lib/memcpy.c
index 62182c81e91c..064889316974 100644
--- a/arch/m68k/lib/memcpy.c
+++ b/arch/m68k/lib/memcpy.c
@@ -34,8 +34,10 @@ void *memcpy(void *to, const void *from, size_t n)
         if (temp) {
                 long *lto = to;
                 const long *lfrom = from;
-#if defined(__mc68020__) || defined(__mc68030__) || \
-    defined(__mc68040__) || defined(__mc68060__) || defined(__mcpu32__)
+#if defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE)
+                for (; temp; temp--)
+                        *lto++ = *lfrom++;
+#else
                 asm volatile (
                         "       movel %2,%3\n"
                         "       andw  #7,%3\n"
@@ -56,9 +58,6 @@ void *memcpy(void *to, const void *from, size_t n)
                         "       jpl   4b"
                         : "=a" (lfrom), "=a" (lto), "=d" (temp), "=&d" (temp1)
                         : "0" (lfrom), "1" (lto), "2" (temp));
-#else
-                for (; temp; temp--)
-                        *lto++ = *lfrom++;
 #endif
                 to = lto;
                 from = lfrom;
diff --git a/arch/m68k/lib/memset.c b/arch/m68k/lib/memset.c
index f649e6a2e644..8a7639f0a2fe 100644
--- a/arch/m68k/lib/memset.c
+++ b/arch/m68k/lib/memset.c
@@ -32,8 +32,10 @@ void *memset(void *s, int c, size_t count)
         temp = count >> 2;
         if (temp) {
                 long *ls = s;
-#if defined(__mc68020__) || defined(__mc68030__) || \
-    defined(__mc68040__) || defined(__mc68060__) || defined(__mcpu32__)
+#if defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE)
+                for (; temp; temp--)
+                        *ls++ = c;
+#else
                 size_t temp1;
                 asm volatile (
                         "       movel %1,%2\n"
@@ -55,9 +57,6 @@ void *memset(void *s, int c, size_t count)
                         "       jpl   1b"
                         : "=a" (ls), "=d" (temp), "=&d" (temp1)
                         : "d" (c), "0" (ls), "1" (temp));
-#else
-                for (; temp; temp--)
-                        *ls++ = c;
 #endif
                 s = ls;
         }
diff --git a/arch/m68k/lib/muldi3.c b/arch/m68k/lib/muldi3.c
index 079bafca073e..79e928a525d0 100644
--- a/arch/m68k/lib/muldi3.c
+++ b/arch/m68k/lib/muldi3.c
@@ -19,17 +19,7 @@ along with GNU CC; see the file COPYING.  If not, write to
 the Free Software Foundation, 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.  */
 
-#if defined(__mc68020__) || defined(__mc68030__) || \
-    defined(__mc68040__) || defined(__mc68060__) || defined(__mcpu32__)
-
-#define umul_ppmm(w1, w0, u, v) \
-  __asm__ ("mulu%.l %3,%1:%0"                                           \
-           : "=d" ((USItype)(w0)),                                      \
-             "=d" ((USItype)(w1))                                       \
-           : "%0" ((USItype)(u)),                                       \
-             "dmi" ((USItype)(v)))
-
-#else
+#if defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE)
 
 #define SI_TYPE_SIZE 32
 #define __BITS4 (SI_TYPE_SIZE / 4)
@@ -61,6 +51,15 @@ Boston, MA 02111-1307, USA.  */
     (w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0);          \
   } while (0)
 
+#else
+
+#define umul_ppmm(w1, w0, u, v) \
+  __asm__ ("mulu%.l %3,%1:%0"                                           \
+           : "=d" ((USItype)(w0)),                                      \
+             "=d" ((USItype)(w1))                                       \
+           : "%0" ((USItype)(u)),                                       \
+             "dmi" ((USItype)(v)))
+
 #endif
 
 #define __umulsidi3(u, v) \
diff --git a/arch/mips/configs/mtx1_defconfig b/arch/mips/configs/mtx1_defconfig
index 37862b2ce363..807c97eed8a8 100644
--- a/arch/mips/configs/mtx1_defconfig
+++ b/arch/mips/configs/mtx1_defconfig
@@ -678,7 +678,7 @@ CONFIG_LEDS_TRIGGERS=y
 CONFIG_LEDS_TRIGGER_TIMER=y
 CONFIG_LEDS_TRIGGER_HEARTBEAT=y
 CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
-CONFIG_RTC_CLASS=m
+CONFIG_RTC_CLASS=y
 CONFIG_RTC_INTF_DEV_UIE_EMUL=y
 CONFIG_RTC_DRV_TEST=m
 CONFIG_RTC_DRV_DS1307=m
diff --git a/arch/powerpc/configs/52xx/pcm030_defconfig b/arch/powerpc/configs/52xx/pcm030_defconfig
index 7f7e4a878602..22e719575c60 100644
--- a/arch/powerpc/configs/52xx/pcm030_defconfig
+++ b/arch/powerpc/configs/52xx/pcm030_defconfig
@@ -85,7 +85,7 @@ CONFIG_USB_OHCI_HCD=m
 CONFIG_USB_OHCI_HCD_PPC_OF_BE=y
 # CONFIG_USB_OHCI_HCD_PCI is not set
 CONFIG_USB_STORAGE=m
-CONFIG_RTC_CLASS=m
+CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_PCF8563=m
 CONFIG_EXT2_FS=m
 CONFIG_EXT3_FS=m
diff --git a/arch/powerpc/configs/ps3_defconfig b/arch/powerpc/configs/ps3_defconfig
index 6472322bf13b..185c292b0f1c 100644
--- a/arch/powerpc/configs/ps3_defconfig
+++ b/arch/powerpc/configs/ps3_defconfig
@@ -141,7 +141,7 @@ CONFIG_USB_EHCI_TT_NEWSCHED=y
 # CONFIG_USB_EHCI_HCD_PPC_OF is not set
 CONFIG_USB_OHCI_HCD=m
 CONFIG_USB_STORAGE=m
-CONFIG_RTC_CLASS=m
+CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_PS3=m
 CONFIG_EXT2_FS=m
 CONFIG_EXT3_FS=m
diff --git a/arch/sh/configs/titan_defconfig b/arch/sh/configs/titan_defconfig
index 0f558914e760..e2cbd92d520b 100644
--- a/arch/sh/configs/titan_defconfig
+++ b/arch/sh/configs/titan_defconfig
@@ -227,7 +227,7 @@ CONFIG_USB_SERIAL=m
 CONFIG_USB_SERIAL_GENERIC=y
 CONFIG_USB_SERIAL_ARK3116=m
 CONFIG_USB_SERIAL_PL2303=m
-CONFIG_RTC_CLASS=m
+CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_SH=m
 CONFIG_EXT2_FS=y
 CONFIG_EXT3_FS=y
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index b511a011b7d0..adc66c3a1fef 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -632,14 +632,14 @@ late_initcall(uv_init_heartbeat);
 
 /* Direct Legacy VGA I/O traffic to designated IOH */
 int uv_set_vga_state(struct pci_dev *pdev, bool decode,
-                      unsigned int command_bits, bool change_bridge)
+                      unsigned int command_bits, u32 flags)
 {
         int domain, bus, rc;
 
-        PR_DEVEL("devfn %x decode %d cmd %x chg_brdg %d\n",
-                        pdev->devfn, decode, command_bits, change_bridge);
+        PR_DEVEL("devfn %x decode %d cmd %x flags %d\n",
+                        pdev->devfn, decode, command_bits, flags);
 
-        if (!change_bridge)
+        if (!(flags & PCI_VGA_STATE_CHANGE_BRIDGE))
                 return 0;
 
         if ((command_bits & PCI_COMMAND_IO) == 0)
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 2e4928d45a2d..e1ba8cb24e4e 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -337,7 +337,7 @@ EXPORT_SYMBOL(boot_option_idle_override);
  * Powermanagement idle function, if any..
  */
 void (*pm_idle)(void);
-#if defined(CONFIG_APM_MODULE) && defined(CONFIG_APM_CPU_IDLE)
+#ifdef CONFIG_APM_MODULE
 EXPORT_SYMBOL(pm_idle);
 #endif
 
@@ -399,7 +399,7 @@ void default_idle(void)
                 cpu_relax();
         }
 }
-#if defined(CONFIG_APM_MODULE) && defined(CONFIG_APM_CPU_IDLE)
+#ifdef CONFIG_APM_MODULE
 EXPORT_SYMBOL(default_idle);
 #endif
 
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 051474c65b78..34d6a1cab8de 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -163,11 +163,32 @@ static irqreturn_t hpet_interrupt(int irq, void *data)
          * This has the effect of treating non-periodic like periodic.
          */
         if ((devp->hd_flags & (HPET_IE | HPET_PERIODIC)) == HPET_IE) {
-                unsigned long m, t;
+                unsigned long m, t, mc, base, k;
+                struct hpet __iomem *hpet = devp->hd_hpet;
+                struct hpets *hpetp = devp->hd_hpets;
 
                 t = devp->hd_ireqfreq;
                 m = read_counter(&devp->hd_timer->hpet_compare);
-                write_counter(t + m, &devp->hd_timer->hpet_compare);
+                mc = read_counter(&hpet->hpet_mc);
+                /* The time for the next interrupt would logically be t + m,
+                 * however, if we are very unlucky and the interrupt is delayed
+                 * for longer than t then we will completely miss the next
+                 * interrupt if we set t + m and an application will hang.
+                 * Therefore we need to make a more complex computation assuming
+                 * that there exists a k for which the following is true:
+                 * k * t + base < mc + delta
+                 * (k + 1) * t + base > mc + delta
+                 * where t is the interval in hpet ticks for the given freq,
+                 * base is the theoretical start value 0 < base < t,
+                 * mc is the main counter value at the time of the interrupt,
+                 * delta is the time it takes to write the a value to the
+                 * comparator.
+                 * k may then be computed as (mc - base + delta) / t .
+                 */
+                base = mc % t;
+                k = (mc - base + hpetp->hp_delta) / t;
+                write_counter(t * (k + 1) + base,
+                              &devp->hd_timer->hpet_compare);
         }
 
         if (devp->hd_flags & HPET_SHARED_IRQ)
diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
index b60a4c263686..853f92d23ddb 100644
--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -387,6 +387,7 @@ static void __exit cpufreq_stats_exit(void)
         unregister_hotcpu_notifier(&cpufreq_stat_cpu_notifier);
         for_each_online_cpu(cpu) {
                 cpufreq_stats_free_table(cpu);
+                cpufreq_stats_free_sysfs(cpu);
         }
 }
 
diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
index 3e257a50bf56..61e1ef90d4e5 100644
--- a/drivers/gpu/drm/drm_bufs.c
+++ b/drivers/gpu/drm/drm_bufs.c
@@ -46,10 +46,11 @@ static struct drm_map_list *drm_find_matching_map(struct drm_device *dev,
         list_for_each_entry(entry, &dev->maplist, head) {
                 /*
                  * Because the kernel-userspace ABI is fixed at a 32-bit offset
-                 * while PCI resources may live above that, we ignore the map
-                 * offset for maps of type _DRM_FRAMEBUFFER or _DRM_REGISTERS.
-                 * It is assumed that each driver will have only one resource of
-                 * each type.
+                 * while PCI resources may live above that, we only compare the
+                 * lower 32 bits of the map offset for maps of type
+                 * _DRM_FRAMEBUFFER or _DRM_REGISTERS.
+                 * It is assumed that if a driver have more than one resource
+                 * of each type, the lower 32 bits are different.
                  */
                 if (!entry->map ||
                     map->type != entry->map->type ||
@@ -59,9 +60,12 @@ static struct drm_map_list *drm_find_matching_map(struct drm_device *dev,
                 case _DRM_SHM:
                         if (map->flags != _DRM_CONTAINS_LOCK)
                                 break;
+                        return entry;
                 case _DRM_REGISTERS:
                 case _DRM_FRAME_BUFFER:
-                        return entry;
+                        if ((entry->map->offset & 0xffffffff) ==
+                            (map->offset & 0xffffffff))
+                                return entry;
                 default: /* Make gcc happy */
                         ;
                 }
@@ -183,9 +187,6 @@ static int drm_addmap_core(struct drm_device * dev, resource_size_t offset,
                         return -EINVAL;
                 }
 #endif
-#ifdef __alpha__
-                map->offset += dev->hose->mem_space->start;
-#endif
                 /* Some drivers preinitialize some maps, without the X Server
                  * needing to be aware of it.  Therefore, we just return success
                  * when the server tries to create a duplicate map.
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 872747c5a544..21058e6ad2b8 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1113,7 +1113,7 @@ int drm_mode_getresources(struct drm_device *dev, void *data,
         if (card_res->count_fbs >= fb_count) {
                 copied = 0;
                 fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
-                list_for_each_entry(fb, &file_priv->fbs, head) {
+                list_for_each_entry(fb, &file_priv->fbs, filp_head) {
                         if (put_user(fb->base.id, fb_id + copied)) {
                                 ret = -EFAULT;
                                 goto out;
diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c
index 2c3fcbdfd8ff..5db96d45fc71 100644
--- a/drivers/gpu/drm/drm_vm.c
+++ b/drivers/gpu/drm/drm_vm.c
@@ -526,7 +526,7 @@ static int drm_mmap_dma(struct file *filp, struct vm_area_struct *vma)
 static resource_size_t drm_core_get_reg_ofs(struct drm_device *dev)
 {
 #ifdef __alpha__
-        return dev->hose->dense_mem_base - dev->hose->mem_space->start;
+        return dev->hose->dense_mem_base;
 #else
         return 0;
 #endif
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 12d32579b951..94c84d744100 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -465,8 +465,10 @@ i915_gem_shmem_pread_slow(struct drm_device *dev,
 
                 page = read_cache_page_gfp(mapping, offset >> PAGE_SHIFT,
                                            GFP_HIGHUSER | __GFP_RECLAIMABLE);
-                if (IS_ERR(page))
-                        return PTR_ERR(page);
+                if (IS_ERR(page)) {
+                        ret = PTR_ERR(page);
+                        goto out;
+                }
 
                 if (do_bit17_swizzling) {
                         slow_shmem_bit17_copy(page,
diff --git a/drivers/gpu/drm/mga/mga_drv.h b/drivers/gpu/drm/mga/mga_drv.h
index 1084fa4d261b..54558a01969a 100644
--- a/drivers/gpu/drm/mga/mga_drv.h
+++ b/drivers/gpu/drm/mga/mga_drv.h
@@ -195,29 +195,10 @@ extern long mga_compat_ioctl(struct file *filp, unsigned int cmd,
 
 #define mga_flush_write_combine()       DRM_WRITEMEMORYBARRIER()
 
-#if defined(__linux__) && defined(__alpha__)
-#define MGA_BASE(reg)           ((unsigned long)(dev_priv->mmio->handle))
-#define MGA_ADDR(reg)           (MGA_BASE(reg) + reg)
-
-#define MGA_DEREF(reg)          (*(volatile u32 *)MGA_ADDR(reg))
-#define MGA_DEREF8(reg)         (*(volatile u8 *)MGA_ADDR(reg))
-
-#define MGA_READ(reg)           (_MGA_READ((u32 *)MGA_ADDR(reg)))
-#define MGA_READ8(reg)          (_MGA_READ((u8 *)MGA_ADDR(reg)))
-#define MGA_WRITE(reg, val)     do { DRM_WRITEMEMORYBARRIER(); MGA_DEREF(reg) = val; } while (0)
-#define MGA_WRITE8(reg, val)    do { DRM_WRITEMEMORYBARRIER(); MGA_DEREF8(reg) = val; } while (0)
-
-static inline u32 _MGA_READ(u32 *addr)
-{
-        DRM_MEMORYBARRIER();
-        return *(volatile u32 *)addr;
-}
-#else
 #define MGA_READ8(reg)          DRM_READ8(dev_priv->mmio, (reg))
 #define MGA_READ(reg)           DRM_READ32(dev_priv->mmio, (reg))
 #define MGA_WRITE8(reg, val)    DRM_WRITE8(dev_priv->mmio, (reg), (val))
 #define MGA_WRITE(reg, val)     DRM_WRITE32(dev_priv->mmio, (reg), (val))
-#endif
 
 #define DWGREG0         0x1c00
 #define DWGREG0_END     0x1dff
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 98ea597bc76d..86157b172c88 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -2944,7 +2944,7 @@ restart_ih:
                         radeon_fence_process(rdev);
                         break;
                 case 233: /* GUI IDLE */
-                        DRM_DEBUG("IH: CP EOP\n");
+                        DRM_DEBUG("IH: GUI idle\n");
                         rdev->pm.gui_idle = true;
                         wake_up(&rdev->irq.idle_queue);
                         break;
diff --git a/drivers/gpu/drm/radeon/r100_track.h b/drivers/gpu/drm/radeon/r100_track.h
index 2fef9de7f363..686f9dc5d4bd 100644
--- a/drivers/gpu/drm/radeon/r100_track.h
+++ b/drivers/gpu/drm/radeon/r100_track.h
@@ -63,7 +63,7 @@ struct r100_cs_track {
         unsigned                        num_arrays;
         unsigned                        max_indx;
         unsigned                        color_channel_mask;
-        struct r100_cs_track_array      arrays[11];
+        struct r100_cs_track_array      arrays[16];
         struct r100_cs_track_cb         cb[R300_MAX_CB];
         struct r100_cs_track_cb         zb;
         struct r100_cs_track_cb         aa;
@@ -146,6 +146,12 @@ static inline int r100_packet3_load_vbpntr(struct radeon_cs_parser *p,
         ib = p->ib->ptr;
         track = (struct r100_cs_track *)p->track;
         c = radeon_get_ib_value(p, idx++) & 0x1F;
+        if (c > 16) {
+            DRM_ERROR("Only 16 vertex buffers are allowed %d\n",
+                      pkt->opcode);
+            r100_cs_dump_packet(p, pkt);
+            return -EINVAL;
+        }
         track->num_arrays = c;
         for (i = 0; i < (c - 1); i+=2, idx+=3) {
                 r = r100_cs_packet_next_reloc(p, &reloc);
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index d74d4d71437f..7dd45ca64e29 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -3444,7 +3444,7 @@ restart_ih:
                         radeon_fence_process(rdev);
                         break;
                 case 233: /* GUI IDLE */
-                        DRM_DEBUG("IH: CP EOP\n");
+                        DRM_DEBUG("IH: GUI idle\n");
                         rdev->pm.gui_idle = true;
                         wake_up(&rdev->irq.idle_queue);
                         break;
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index ba643b576054..27f45579e64b 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -165,6 +165,7 @@ struct radeon_clock {
         uint32_t default_sclk;
         uint32_t default_dispclk;
         uint32_t dp_extclk;
+        uint32_t max_pixel_clock;
 };
 
 /*
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 90dfb2b8cf03..fa62a503ae70 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1246,6 +1246,10 @@ bool radeon_atom_get_clock_info(struct drm_device *dev)
                 }
                 *dcpll = *p1pll;
 
+                rdev->clock.max_pixel_clock = le16_to_cpu(firmware_info->info.usMaxPixelClock);
+                if (rdev->clock.max_pixel_clock == 0)
+                        rdev->clock.max_pixel_clock = 40000;
+
                 return true;
         }
 
diff --git a/drivers/gpu/drm/radeon/radeon_clocks.c b/drivers/gpu/drm/radeon/radeon_clocks.c
index 5249af8931e6..2d48e7a1474b 100644
--- a/drivers/gpu/drm/radeon/radeon_clocks.c
+++ b/drivers/gpu/drm/radeon/radeon_clocks.c
@@ -117,7 +117,7 @@ static bool __devinit radeon_read_clocks_OF(struct drm_device *dev)
         p1pll->reference_div = RREG32_PLL(RADEON_PPLL_REF_DIV) & 0x3ff;
         if (p1pll->reference_div < 2)
                 p1pll->reference_div = 12;
-        p2pll->reference_div = p1pll->reference_div;    
+        p2pll->reference_div = p1pll->reference_div;
 
         /* These aren't in the device-tree */
         if (rdev->family >= CHIP_R420) {
@@ -139,6 +139,8 @@ static bool __devinit radeon_read_clocks_OF(struct drm_device *dev)
                 p2pll->pll_out_min = 12500;
                 p2pll->pll_out_max = 35000;
         }
+        /* not sure what the max should be in all cases */
+        rdev->clock.max_pixel_clock = 35000;
 
         spll->reference_freq = mpll->reference_freq = p1pll->reference_freq;
         spll->reference_div = mpll->reference_div =
@@ -151,7 +153,7 @@ static bool __devinit radeon_read_clocks_OF(struct drm_device *dev)
         else
                 rdev->clock.default_sclk =
                         radeon_legacy_get_engine_clock(rdev);
-                        
+
         val = of_get_property(dp, "ATY,MCLK", NULL);
         if (val && *val)
                 rdev->clock.default_mclk = (*val) / 10;
@@ -160,7 +162,7 @@ static bool __devinit radeon_read_clocks_OF(struct drm_device *dev)
                         radeon_legacy_get_memory_clock(rdev);
 
         DRM_INFO("Using device-tree clock info\n");
-        
+
         return true;
 }
 #else
diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index 5b991f7c6e2a..797c8bcbb6a4 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -866,6 +866,11 @@ bool radeon_combios_get_clock_info(struct drm_device *dev)
                 rdev->clock.default_sclk = sclk;
                 rdev->clock.default_mclk = mclk;
 
+                if (RBIOS32(pll_info + 0x16))
+                        rdev->clock.max_pixel_clock = RBIOS32(pll_info + 0x16);
+                else
+                        rdev->clock.max_pixel_clock = 35000; /* might need something asic specific */
+
                 return true;
         }
         return false;
@@ -1548,9 +1553,8 @@ bool radeon_get_legacy_connector_info_from_table(struct drm_device *dev)
                            (rdev->pdev->subsystem_device == 0x4a48)) {
                         /* Mac X800 */
                         rdev->mode_info.connector_table = CT_MAC_X800;
-                } else if ((rdev->pdev->device == 0x4150) &&
-                           (rdev->pdev->subsystem_vendor == 0x1002) &&
-                           (rdev->pdev->subsystem_device == 0x4150)) {
+                } else if (of_machine_is_compatible("PowerMac7,2") ||
+                           of_machine_is_compatible("PowerMac7,3")) {
                         /* Mac G5 9600 */
                         rdev->mode_info.connector_table = CT_MAC_G5_9600;
                 } else
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index ee1dccb3fec9..9c2929c7e79f 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -626,8 +626,14 @@ static int radeon_vga_get_modes(struct drm_connector *connector)
 static int radeon_vga_mode_valid(struct drm_connector *connector,
                                   struct drm_display_mode *mode)
 {
+        struct drm_device *dev = connector->dev;
+        struct radeon_device *rdev = dev->dev_private;
+
         /* XXX check mode bandwidth */
-        /* XXX verify against max DAC output frequency */
+
+        if ((mode->clock / 10) > rdev->clock.max_pixel_clock)
+                return MODE_CLOCK_HIGH;
+
         return MODE_OK;
 }
 
@@ -1015,6 +1021,11 @@ static int radeon_dvi_mode_valid(struct drm_connector *connector,
                 } else
                         return MODE_CLOCK_HIGH;
         }
+
+        /* check against the max pixel clock */
+        if ((mode->clock / 10) > rdev->clock.max_pixel_clock)
+                return MODE_CLOCK_HIGH;
+
         return MODE_OK;
 }
 
diff --git a/drivers/gpu/drm/savage/savage_bci.c b/drivers/gpu/drm/savage/savage_bci.c
index bf5f83ea14fe..cb1ee4e0050a 100644
--- a/drivers/gpu/drm/savage/savage_bci.c
+++ b/drivers/gpu/drm/savage/savage_bci.c
@@ -647,9 +647,6 @@ int savage_driver_firstopen(struct drm_device *dev)
         ret = drm_addmap(dev, aperture_base, SAVAGE_APERTURE_SIZE,
                          _DRM_FRAME_BUFFER, _DRM_WRITE_COMBINING,
                          &dev_priv->aperture);
-        if (ret)
-                return ret;
-
         return ret;
 }
 
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 23f0d5e99f35..713d43b4e563 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -1,3 +1,10 @@
+config LEDS_GPIO_REGISTER
+        bool
+        help
+          This option provides the function gpio_led_register_device.
+          As this function is used by arch code it must not be compiled as a
+          module.
+
 menuconfig NEW_LEDS
         bool "LED Support"
         help
@@ -7,22 +14,14 @@ menuconfig NEW_LEDS
           This is not related to standard keyboard LEDs which are controlled
           via the input system.
 
+if NEW_LEDS
+
 config LEDS_CLASS
         bool "LED Class Support"
-        depends on NEW_LEDS
         help
           This option enables the led sysfs class in /sys/class/leds.  You'll
           need this to do anything useful with LEDs.  If unsure, say N.
 
-config LEDS_GPIO_REGISTER
-        bool
-        help
-          This option provides the function gpio_led_register_device.
-          As this function is used by arch code it must not be compiled as a
-          module.
-
-if NEW_LEDS
-
 comment "LED drivers"
 
 config LEDS_88PM860X
@@ -391,6 +390,7 @@ config LEDS_NETXBIG
 
 config LEDS_ASIC3
         bool "LED support for the HTC ASIC3"
+        depends on LEDS_CLASS
         depends on MFD_ASIC3
         default y
         help
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index 70bd738b8b99..574b09afedd3 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -534,6 +534,82 @@ void bitmap_print_sb(struct bitmap *bitmap)
         kunmap_atomic(sb, KM_USER0);
 }
 
+/*
+ * bitmap_new_disk_sb
+ * @bitmap
+ *
+ * This function is somewhat the reverse of bitmap_read_sb.  bitmap_read_sb
+ * reads and verifies the on-disk bitmap superblock and populates bitmap_info.
+ * This function verifies 'bitmap_info' and populates the on-disk bitmap
+ * structure, which is to be written to disk.
+ *
+ * Returns: 0 on success, -Exxx on error
+ */
+static int bitmap_new_disk_sb(struct bitmap *bitmap)
+{
+        bitmap_super_t *sb;
+        unsigned long chunksize, daemon_sleep, write_behind;
+        int err = -EINVAL;
+
+        bitmap->sb_page = alloc_page(GFP_KERNEL);
+        if (IS_ERR(bitmap->sb_page)) {
+                err = PTR_ERR(bitmap->sb_page);
+                bitmap->sb_page = NULL;
+                return err;
+        }
+        bitmap->sb_page->index = 0;
+
+        sb = kmap_atomic(bitmap->sb_page, KM_USER0);
+
+        sb->magic = cpu_to_le32(BITMAP_MAGIC);
+        sb->version = cpu_to_le32(BITMAP_MAJOR_HI);
+
+        chunksize = bitmap->mddev->bitmap_info.chunksize;
+        BUG_ON(!chunksize);
+        if (!is_power_of_2(chunksize)) {
+                kunmap_atomic(sb, KM_USER0);
+                printk(KERN_ERR "bitmap chunksize not a power of 2\n");
+                return -EINVAL;
+        }
+        sb->chunksize = cpu_to_le32(chunksize);
+
+        daemon_sleep = bitmap->mddev->bitmap_info.daemon_sleep;
+        if (!daemon_sleep ||
+            (daemon_sleep < 1) || (daemon_sleep > MAX_SCHEDULE_TIMEOUT)) {
+                printk(KERN_INFO "Choosing daemon_sleep default (5 sec)\n");
+                daemon_sleep = 5 * HZ;
+        }
+        sb->daemon_sleep = cpu_to_le32(daemon_sleep);
+        bitmap->mddev->bitmap_info.daemon_sleep = daemon_sleep;
+
+        /*
+         * FIXME: write_behind for RAID1.  If not specified, what
+         * is a good choice?  We choose COUNTER_MAX / 2 arbitrarily.
+         */
+        write_behind = bitmap->mddev->bitmap_info.max_write_behind;
+        if (write_behind > COUNTER_MAX)
+                write_behind = COUNTER_MAX / 2;
+        sb->write_behind = cpu_to_le32(write_behind);
+        bitmap->mddev->bitmap_info.max_write_behind = write_behind;
+
+        /* keep the array size field of the bitmap superblock up to date */
+        sb->sync_size = cpu_to_le64(bitmap->mddev->resync_max_sectors);
+
+        memcpy(sb->uuid, bitmap->mddev->uuid, 16);
+
+        bitmap->flags |= BITMAP_STALE;
+        sb->state |= cpu_to_le32(BITMAP_STALE);
+        bitmap->events_cleared = bitmap->mddev->events;
+        sb->events_cleared = cpu_to_le64(bitmap->mddev->events);
+
+        bitmap->flags |= BITMAP_HOSTENDIAN;
+        sb->version = cpu_to_le32(BITMAP_MAJOR_HOSTENDIAN);
+
+        kunmap_atomic(sb, KM_USER0);
+
+        return 0;
+}
+
 /* read the superblock from the bitmap file and initialize some bitmap fields */
 static int bitmap_read_sb(struct bitmap *bitmap)
 {
@@ -575,7 +651,7 @@ static int bitmap_read_sb(struct bitmap *bitmap)
                 reason = "unrecognized superblock version";
         else if (chunksize < 512)
                 reason = "bitmap chunksize too small";
-        else if ((1 << ffz(~chunksize)) != chunksize)
+        else if (!is_power_of_2(chunksize))
                 reason = "bitmap chunksize not a power of 2";
         else if (daemon_sleep < 1 || daemon_sleep > MAX_SCHEDULE_TIMEOUT)
                 reason = "daemon sleep period out of range";
@@ -1076,8 +1152,8 @@ static int bitmap_init_from_disk(struct bitmap *bitmap, sector_t start)
         }
 
         printk(KERN_INFO "%s: bitmap initialized from disk: "
-                "read %lu/%lu pages, set %lu bits\n",
-                bmname(bitmap), bitmap->file_pages, num_pages, bit_cnt);
+               "read %lu/%lu pages, set %lu of %lu bits\n",
+               bmname(bitmap), bitmap->file_pages, num_pages, bit_cnt, chunks);
 
         return 0;
 
@@ -1332,7 +1408,7 @@ int bitmap_startwrite(struct bitmap *bitmap, sector_t offset, unsigned long sect
                         return 0;
                 }
 
-                if (unlikely((*bmc & COUNTER_MAX) == COUNTER_MAX)) {
+                if (unlikely(COUNTER(*bmc) == COUNTER_MAX)) {
                         DEFINE_WAIT(__wait);
                         /* note that it is safe to do the prepare_to_wait
                          * after the test as long as we do it before dropping
@@ -1404,10 +1480,10 @@ void bitmap_endwrite(struct bitmap *bitmap, sector_t offset, unsigned long secto
                         sysfs_notify_dirent_safe(bitmap->sysfs_can_clear);
                 }
 
-                if (!success && ! (*bmc & NEEDED_MASK))
+                if (!success && !NEEDED(*bmc))
                         *bmc |= NEEDED_MASK;
 
-                if ((*bmc & COUNTER_MAX) == COUNTER_MAX)
+                if (COUNTER(*bmc) == COUNTER_MAX)
                         wake_up(&bitmap->overflow_wait);
 
                 (*bmc)--;
@@ -1728,9 +1804,16 @@ int bitmap_create(mddev_t *mddev)
                 vfs_fsync(file, 1);
         }
         /* read superblock from bitmap file (this sets mddev->bitmap_info.chunksize) */
-        if (!mddev->bitmap_info.external)
-                err = bitmap_read_sb(bitmap);
-        else {
+        if (!mddev->bitmap_info.external) {
+                /*
+                 * If 'MD_ARRAY_FIRST_USE' is set, then device-mapper is
+                 * instructing us to create a new on-disk bitmap instance.
+                 */
+                if (test_and_clear_bit(MD_ARRAY_FIRST_USE, &mddev->flags))
+                        err = bitmap_new_disk_sb(bitmap);
+                else
+                        err = bitmap_read_sb(bitmap);
+        } else {
                 err = 0;
                 if (mddev->bitmap_info.chunksize == 0 ||
                     mddev->bitmap_info.daemon_sleep == 0)
@@ -1754,9 +1837,6 @@ int bitmap_create(mddev_t *mddev)
         bitmap->chunks = chunks;
         bitmap->pages = pages;
         bitmap->missing_pages = pages;
-        bitmap->counter_bits = COUNTER_BITS;
-
-        bitmap->syncchunk = ~0UL;
 
 #ifdef INJECT_FATAL_FAULT_1
         bitmap->bp = NULL;
diff --git a/drivers/md/bitmap.h b/drivers/md/bitmap.h
index d0aeaf46d932..b2a127e891ac 100644
--- a/drivers/md/bitmap.h
+++ b/drivers/md/bitmap.h
@@ -85,7 +85,6 @@
 typedef __u16 bitmap_counter_t;
 #define COUNTER_BITS 16
 #define COUNTER_BIT_SHIFT 4
-#define COUNTER_BYTE_RATIO (COUNTER_BITS / 8)
 #define COUNTER_BYTE_SHIFT (COUNTER_BIT_SHIFT - 3)
 
 #define NEEDED_MASK ((bitmap_counter_t) (1 << (COUNTER_BITS - 1)))
@@ -196,19 +195,10 @@ struct bitmap {
 
         mddev_t *mddev; /* the md device that the bitmap is for */
 
-        int counter_bits; /* how many bits per block counter */
-
         /* bitmap chunksize -- how much data does each bit represent? */
         unsigned long chunkshift; /* chunksize = 2^chunkshift (for bitops) */
         unsigned long chunks; /* total number of data chunks for the array */
 
-        /* We hold a count on the chunk currently being synced, and drop
-         * it when the last block is started.  If the resync is aborted
-         * midway, we need to be able to drop that count, so we remember
-         * the counted chunk..
-         */
-        unsigned long syncchunk;
-
         __u64   events_cleared;
         int need_sync;
 
diff --git a/drivers/md/md.c b/drivers/md/md.c
index aa640a85bb21..4332fc2f25d4 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -351,6 +351,9 @@ void mddev_resume(mddev_t *mddev)
         mddev->suspended = 0;
         wake_up(&mddev->sb_wait);
         mddev->pers->quiesce(mddev, 0);
+
+        md_wakeup_thread(mddev->thread);
+        md_wakeup_thread(mddev->sync_thread); /* possibly kick off a reshape */
 }
 EXPORT_SYMBOL_GPL(mddev_resume);
 
@@ -1750,6 +1753,18 @@ static struct super_type super_types[] = {
         },
 };
 
+static void sync_super(mddev_t *mddev, mdk_rdev_t *rdev)
+{
+        if (mddev->sync_super) {
+                mddev->sync_super(mddev, rdev);
+                return;
+        }
+
+        BUG_ON(mddev->major_version >= ARRAY_SIZE(super_types));
+
+        super_types[mddev->major_version].sync_super(mddev, rdev);
+}
+
 static int match_mddev_units(mddev_t *mddev1, mddev_t *mddev2)
 {
         mdk_rdev_t *rdev, *rdev2;
@@ -1781,8 +1796,8 @@ int md_integrity_register(mddev_t *mddev)
 
         if (list_empty(&mddev->disks))
                 return 0; /* nothing to do */
-        if (blk_get_integrity(mddev->gendisk))
-                return 0; /* already registered */
+        if (!mddev->gendisk || blk_get_integrity(mddev->gendisk))
+                return 0; /* shouldn't register, or already is */
         list_for_each_entry(rdev, &mddev->disks, same_set) {
                 /* skip spares and non-functional disks */
                 if (test_bit(Faulty, &rdev->flags))
@@ -2168,8 +2183,7 @@ static void sync_sbs(mddev_t * mddev, int nospares)
                         /* Don't update this superblock */
                         rdev->sb_loaded = 2;
                 } else {
-                        super_types[mddev->major_version].
-                                sync_super(mddev, rdev);
+                        sync_super(mddev, rdev);
                         rdev->sb_loaded = 1;
                 }
         }
@@ -2462,7 +2476,7 @@ slot_store(mdk_rdev_t *rdev, const char *buf, size_t len)
                 if (rdev->raid_disk == -1)
                         return -EEXIST;
                 /* personality does all needed checks */
-                if (rdev->mddev->pers->hot_add_disk == NULL)
+                if (rdev->mddev->pers->hot_remove_disk == NULL)
                         return -EINVAL;
                 err = rdev->mddev->pers->
                         hot_remove_disk(rdev->mddev, rdev->raid_disk);
@@ -4619,9 +4633,6 @@ int md_run(mddev_t *mddev)
         if (mddev->flags)
                 md_update_sb(mddev, 0);
 
-        md_wakeup_thread(mddev->thread);
-        md_wakeup_thread(mddev->sync_thread); /* possibly kick off a reshape */
-
         md_new_event(mddev);
         sysfs_notify_dirent_safe(mddev->sysfs_state);
         sysfs_notify_dirent_safe(mddev->sysfs_action);
@@ -4642,6 +4653,10 @@ static int do_md_run(mddev_t *mddev)
                 bitmap_destroy(mddev);
                 goto out;
         }
+
+        md_wakeup_thread(mddev->thread);
+        md_wakeup_thread(mddev->sync_thread); /* possibly kick off a reshape */
+
         set_capacity(mddev->gendisk, mddev->array_sectors);
         revalidate_disk(mddev->gendisk);
         mddev->changed = 1;
@@ -5259,6 +5274,8 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info)
                 if (mddev->degraded)
                         set_bit(MD_RECOVERY_RECOVER, &mddev->recovery);
                 set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
+                if (!err)
+                        md_new_event(mddev);
                 md_wakeup_thread(mddev->thread);
                 return err;
         }
@@ -6866,8 +6883,8 @@ void md_do_sync(mddev_t *mddev)
          * Tune reconstruction:
          */
         window = 32*(PAGE_SIZE/512);
-        printk(KERN_INFO "md: using %dk window, over a total of %llu blocks.\n",
-                window/2,(unsigned long long) max_sectors/2);
+        printk(KERN_INFO "md: using %dk window, over a total of %lluk.\n",
+                window/2, (unsigned long long)max_sectors/2);
 
         atomic_set(&mddev->recovery_active, 0);
         last_check = 0;
@@ -7045,7 +7062,6 @@ void md_do_sync(mddev_t *mddev)
 }
 EXPORT_SYMBOL_GPL(md_do_sync);
 
-
 static int remove_and_add_spares(mddev_t *mddev)
 {
         mdk_rdev_t *rdev;
@@ -7157,6 +7173,9 @@ static void reap_sync_thread(mddev_t *mddev)
  */
 void md_check_recovery(mddev_t *mddev)
 {
+        if (mddev->suspended)
+                return;
+
         if (mddev->bitmap)
                 bitmap_daemon_work(mddev);
 
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 0b1fd3f1d85b..1c26c7a08ae6 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -124,6 +124,7 @@ struct mddev_s
 #define MD_CHANGE_DEVS  0       /* Some device status has changed */
 #define MD_CHANGE_CLEAN 1       /* transition to or from 'clean' */
 #define MD_CHANGE_PENDING 2     /* switch from 'clean' to 'active' in progress */
+#define MD_ARRAY_FIRST_USE 3    /* First use of array, needs initialization */
 
         int                             suspended;
         atomic_t                        active_io;
@@ -330,6 +331,7 @@ struct mddev_s
         atomic_t flush_pending;
         struct work_struct flush_work;
         struct work_struct event_work;  /* used by dm to report failure event */
+        void (*sync_super)(mddev_t *mddev, mdk_rdev_t *rdev);
 };
 
 
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 5d096096f958..f7431b6d8447 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -497,21 +497,19 @@ static int read_balance(conf_t *conf, r1bio_t *r1_bio)
         return best_disk;
 }
 
-static int raid1_congested(void *data, int bits)
+int md_raid1_congested(mddev_t *mddev, int bits)
 {
-        mddev_t *mddev = data;
         conf_t *conf = mddev->private;
         int i, ret = 0;
 
-        if (mddev_congested(mddev, bits))
-                return 1;
-
         rcu_read_lock();
         for (i = 0; i < mddev->raid_disks; i++) {
                 mdk_rdev_t *rdev = rcu_dereference(conf->mirrors[i].rdev);
                 if (rdev && !test_bit(Faulty, &rdev->flags)) {
                         struct request_queue *q = bdev_get_queue(rdev->bdev);
 
+                        BUG_ON(!q);
+
                         /* Note the '|| 1' - when read_balance prefers
                          * non-congested targets, it can be removed
                          */
@@ -524,7 +522,15 @@ static int raid1_congested(void *data, int bits)
         rcu_read_unlock();
         return ret;
 }
+EXPORT_SYMBOL_GPL(md_raid1_congested);
 
+static int raid1_congested(void *data, int bits)
+{
+        mddev_t *mddev = data;
+
+        return mddev_congested(mddev, bits) ||
+                md_raid1_congested(mddev, bits);
+}
 
 static void flush_pending_writes(conf_t *conf)
 {
@@ -1972,6 +1978,8 @@ static int run(mddev_t *mddev)
                 return PTR_ERR(conf);
 
         list_for_each_entry(rdev, &mddev->disks, same_set) {
+                if (!mddev->gendisk)
+                        continue;
                 disk_stack_limits(mddev->gendisk, rdev->bdev,
                                   rdev->data_offset << 9);
                 /* as we don't honour merge_bvec_fn, we must never risk
@@ -2013,8 +2021,10 @@ static int run(mddev_t *mddev)
 
         md_set_array_sectors(mddev, raid1_size(mddev, 0, 0));
 
-        mddev->queue->backing_dev_info.congested_fn = raid1_congested;
-        mddev->queue->backing_dev_info.congested_data = mddev;
+        if (mddev->queue) {
+                mddev->queue->backing_dev_info.congested_fn = raid1_congested;
+                mddev->queue->backing_dev_info.congested_data = mddev;
+        }
         return md_integrity_register(mddev);
 }
 
diff --git a/drivers/md/raid1.h b/drivers/md/raid1.h
index 5fc4ca1af863..e743a64fac4f 100644
--- a/drivers/md/raid1.h
+++ b/drivers/md/raid1.h
@@ -126,4 +126,6 @@ struct r1bio_s {
  */
 #define R1BIO_Returned 6
 
+extern int md_raid1_congested(mddev_t *mddev, int bits);
+
 #endif
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 346e69bfdab3..b72edf35ec54 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -129,7 +129,7 @@ static inline int raid5_dec_bi_hw_segments(struct bio *bio)
 
 static inline void raid5_set_bi_hw_segments(struct bio *bio, unsigned int cnt)
 {
-        bio->bi_phys_segments = raid5_bi_phys_segments(bio) || (cnt << 16);
+        bio->bi_phys_segments = raid5_bi_phys_segments(bio) | (cnt << 16);
 }
 
 /* Find first data disk in a raid6 stripe */
@@ -514,7 +514,7 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
                 bi = &sh->dev[i].req;
 
                 bi->bi_rw = rw;
-                if (rw == WRITE)
+                if (rw & WRITE)
                         bi->bi_end_io = raid5_end_write_request;
                 else
                         bi->bi_end_io = raid5_end_read_request;
@@ -548,13 +548,13 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
                         bi->bi_io_vec[0].bv_offset = 0;
                         bi->bi_size = STRIPE_SIZE;
                         bi->bi_next = NULL;
-                        if (rw == WRITE &&
+                        if ((rw & WRITE) &&
                             test_bit(R5_ReWrite, &sh->dev[i].flags))
                                 atomic_add(STRIPE_SECTORS,
                                         &rdev->corrected_errors);
                         generic_make_request(bi);
                 } else {
-                        if (rw == WRITE)
+                        if (rw & WRITE)
                                 set_bit(STRIPE_DEGRADED, &sh->state);
                         pr_debug("skip op %ld on disc %d for sector %llu\n",
                                 bi->bi_rw, i, (unsigned long long)sh->sector);
@@ -585,7 +585,7 @@ async_copy_data(int frombio, struct bio *bio, struct page *page,
         init_async_submit(&submit, flags, tx, NULL, NULL, NULL);
 
         bio_for_each_segment(bvl, bio, i) {
-                int len = bio_iovec_idx(bio, i)->bv_len;
+                int len = bvl->bv_len;
                 int clen;
                 int b_offset = 0;
 
@@ -601,8 +601,8 @@ async_copy_data(int frombio, struct bio *bio, struct page *page,
                         clen = len;
 
                 if (clen > 0) {
-                        b_offset += bio_iovec_idx(bio, i)->bv_offset;
-                        bio_page = bio_iovec_idx(bio, i)->bv_page;
+                        b_offset += bvl->bv_offset;
+                        bio_page = bvl->bv_page;
                         if (frombio)
                                 tx = async_memcpy(page, bio_page, page_offset,
                                                   b_offset, clen, &submit);
@@ -4858,7 +4858,7 @@ static raid5_conf_t *setup_conf(mddev_t *mddev)
                         printk(KERN_INFO "md/raid:%s: device %s operational as raid"
                                " disk %d\n",
                                mdname(mddev), bdevname(rdev->bdev, b), raid_disk);
-                } else
+                } else if (rdev->saved_raid_disk != raid_disk)
                         /* Cannot rely on bitmap to complete recovery */
                         conf->fullsync = 1;
         }
diff --git a/drivers/misc/apds990x.c b/drivers/misc/apds990x.c
index 200311fea369..e2a52e5cf449 100644
--- a/drivers/misc/apds990x.c
+++ b/drivers/misc/apds990x.c
@@ -609,6 +609,7 @@ static int apds990x_detect(struct apds990x_chip *chip)
         return ret;
 }
 
+#if defined(CONFIG_PM) || defined(CONFIG_PM_RUNTIME)
 static int apds990x_chip_on(struct apds990x_chip *chip)
 {
         int err  = regulator_bulk_enable(ARRAY_SIZE(chip->regs),
@@ -624,6 +625,7 @@ static int apds990x_chip_on(struct apds990x_chip *chip)
         apds990x_mode_on(chip);
         return 0;
 }
+#endif
 
 static int apds990x_chip_off(struct apds990x_chip *chip)
 {
diff --git a/drivers/misc/cs5535-mfgpt.c b/drivers/misc/cs5535-mfgpt.c
index e01e08c8c88b..bc685bfc4c33 100644
--- a/drivers/misc/cs5535-mfgpt.c
+++ b/drivers/misc/cs5535-mfgpt.c
@@ -174,7 +174,7 @@ struct cs5535_mfgpt_timer *cs5535_mfgpt_alloc_timer(int timer_nr, int domain)
                 timer_nr = t < max ? (int) t : -1;
         } else {
                 /* check if the requested timer's available */
-                if (test_bit(timer_nr, mfgpt->avail))
+                if (!test_bit(timer_nr, mfgpt->avail))
                         timer_nr = -1;
         }
 
diff --git a/drivers/misc/spear13xx_pcie_gadget.c b/drivers/misc/spear13xx_pcie_gadget.c
index 7aded90f9daa..cfbddbef11de 100644
--- a/drivers/misc/spear13xx_pcie_gadget.c
+++ b/drivers/misc/spear13xx_pcie_gadget.c
@@ -845,7 +845,7 @@ err_iounmap:
 err_iounmap_app:
         iounmap(config->va_app_base);
 err_kzalloc:
-        kfree(config);
+        kfree(target);
 err_rel_res:
         release_mem_region(res1->start, resource_size(res1));
 err_rel_res0:
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 5da5bea0f9f0..7721de942c69 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -1144,9 +1144,17 @@ static int __devinit mmci_probe(struct amba_device *dev,
                 else if (ret != -ENOSYS)
                         goto err_gpio_cd;
 
+                /*
+                 * A gpio pin that will detect cards when inserted and removed
+                 * will most likely want to trigger on the edges if it is
+                 * 0 when ejected and 1 when inserted (or mutatis mutandis
+                 * for the inverted case) so we request triggers on both
+                 * edges.
+                 */
                 ret = request_any_context_irq(gpio_to_irq(plat->gpio_cd),
-                                              mmci_cd_irq, 0,
-                                              DRIVER_NAME " (cd)", host);
+                                mmci_cd_irq,
+                                IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+                                DRIVER_NAME " (cd)", host);
                 if (ret >= 0)
                         host->gpio_cd_irq = gpio_to_irq(plat->gpio_cd);
         }
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 56098b3e17c0..5f10c23dff94 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3271,11 +3271,11 @@ void __init pci_register_set_vga_state(arch_set_vga_state_t func)
 }
 
 static int pci_set_vga_state_arch(struct pci_dev *dev, bool decode,
-                      unsigned int command_bits, bool change_bridge)
+                      unsigned int command_bits, u32 flags)
 {
         if (arch_set_vga_state)
                 return arch_set_vga_state(dev, decode, command_bits,
-                                                change_bridge);
+                                                flags);
         return 0;
 }
 
diff --git a/drivers/staging/iio/accel/adis16201.h b/drivers/staging/iio/accel/adis16201.h
index 0b9b85424dfa..4cc1a5bfab40 100644
--- a/drivers/staging/iio/accel/adis16201.h
+++ b/drivers/staging/iio/accel/adis16201.h
@@ -81,7 +81,6 @@ struct adis16201_state {
 
 int adis16201_set_irq(struct iio_dev *indio_dev, bool enable);
 
-#ifdef CONFIG_IIO_RING_BUFFER
 enum adis16201_scan {
         ADIS16201_SCAN_SUPPLY,
         ADIS16201_SCAN_ACC_X,
@@ -92,6 +91,7 @@ enum adis16201_scan {
         ADIS16201_SCAN_INCLI_Y,
 };
 
+#ifdef CONFIG_IIO_RING_BUFFER
 void adis16201_remove_trigger(struct iio_dev *indio_dev);
 int adis16201_probe_trigger(struct iio_dev *indio_dev);
 
diff --git a/drivers/staging/iio/accel/adis16203.h b/drivers/staging/iio/accel/adis16203.h
index 8bb8ce50c248..175e21bb9b40 100644
--- a/drivers/staging/iio/accel/adis16203.h
+++ b/drivers/staging/iio/accel/adis16203.h
@@ -76,7 +76,6 @@ struct adis16203_state {
 
 int adis16203_set_irq(struct iio_dev *indio_dev, bool enable);
 
-#ifdef CONFIG_IIO_RING_BUFFER
 enum adis16203_scan {
         ADIS16203_SCAN_SUPPLY,
         ADIS16203_SCAN_AUX_ADC,
@@ -85,6 +84,7 @@ enum adis16203_scan {
         ADIS16203_SCAN_INCLI_Y,
 };
 
+#ifdef CONFIG_IIO_RING_BUFFER
 void adis16203_remove_trigger(struct iio_dev *indio_dev);
 int adis16203_probe_trigger(struct iio_dev *indio_dev);
 
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index f2cb7503fcb2..465210930890 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -1397,6 +1397,7 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev,
         int fifosize, base_baud;
         int port_type;
         struct pch_uart_driver_data *board;
+        const char *board_name;
 
         board = &drv_dat[id->driver_data];
         port_type = board->port_type;
@@ -1412,7 +1413,8 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev,
         base_baud = 1843200; /* 1.8432MHz */
 
         /* quirk for CM-iTC board */
-        if (strstr(dmi_get_system_info(DMI_BOARD_NAME), "CM-iTC"))
+        board_name = dmi_get_system_info(DMI_BOARD_NAME);
+        if (board_name && strstr(board_name, "CM-iTC"))
                 base_baud = 192000000; /* 192.0MHz */
 
         switch (port_type) {
diff --git a/drivers/video/aty/atyfb_base.c b/drivers/video/aty/atyfb_base.c
index ebb893c49e90..d7aaec5667bf 100644
--- a/drivers/video/aty/atyfb_base.c
+++ b/drivers/video/aty/atyfb_base.c
@@ -248,10 +248,6 @@ static int atyfb_sync(struct fb_info *info);
 
 static int aty_init(struct fb_info *info);
 
-#ifdef CONFIG_ATARI
-static int store_video_par(char *videopar, unsigned char m64_num);
-#endif
-
 static void aty_get_crtc(const struct atyfb_par *par, struct crtc *crtc);
 
 static void aty_set_crtc(const struct atyfb_par *par, const struct crtc *crtc);
@@ -2268,11 +2264,13 @@ error:
         return;
 }
 
+#ifdef CONFIG_PCI
 static void aty_bl_exit(struct backlight_device *bd)
 {
         backlight_device_unregister(bd);
         printk("aty: Backlight unloaded\n");
 }
+#endif /* CONFIG_PCI */
 
 #endif /* CONFIG_FB_ATY_BACKLIGHT */
 
@@ -2789,7 +2787,7 @@ aty_init_exit:
         return ret;
 }
 
-#ifdef CONFIG_ATARI
+#if defined(CONFIG_ATARI) && !defined(MODULE)
 static int __devinit store_video_par(char *video_str, unsigned char m64_num)
 {
         char *p;
@@ -2818,7 +2816,7 @@ static int __devinit store_video_par(char *video_str, unsigned char m64_num)
         phys_vmembase[m64_num] = 0;
         return -1;
 }
-#endif /* CONFIG_ATARI */
+#endif /* CONFIG_ATARI && !MODULE */
 
 /*
  * Blank the display.
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index 0c9373bedd1f..2d93c8d61ad5 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -302,6 +302,18 @@ config BACKLIGHT_ADP8860
           To compile this driver as a module, choose M here: the module will
           be called adp8860_bl.
 
+config BACKLIGHT_ADP8870
+        tristate "Backlight Driver for ADP8870 using WLED"
+        depends on BACKLIGHT_CLASS_DEVICE && I2C
+        select NEW_LEDS
+        select LEDS_CLASS
+        help
+          If you have a LCD backlight connected to the ADP8870,
+          say Y here to enable this driver.
+
+          To compile this driver as a module, choose M here: the module will
+          be called adp8870_bl.
+
 config BACKLIGHT_88PM860X
         tristate "Backlight Driver for 88PM8606 using WLED"
         depends on MFD_88PM860X
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index b9ca8490df87..ee72adb8786e 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_BACKLIGHT_WM831X)	+= wm831x_bl.o
 obj-$(CONFIG_BACKLIGHT_ADX)    += adx_bl.o
 obj-$(CONFIG_BACKLIGHT_ADP5520) += adp5520_bl.o
 obj-$(CONFIG_BACKLIGHT_ADP8860) += adp8860_bl.o
+obj-$(CONFIG_BACKLIGHT_ADP8870) += adp8870_bl.o
 obj-$(CONFIG_BACKLIGHT_88PM860X) += 88pm860x_bl.o
 obj-$(CONFIG_BACKLIGHT_PCF50633)        += pcf50633-backlight.o
 
diff --git a/drivers/video/backlight/adp8870_bl.c b/drivers/video/backlight/adp8870_bl.c
new file mode 100644
index 000000000000..05a8832bb3eb
--- /dev/null
+++ b/drivers/video/backlight/adp8870_bl.c
@@ -0,0 +1,1012 @@
+/*
+ * Backlight driver for Analog Devices ADP8870 Backlight Devices
+ *
+ * Copyright 2009-2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pm.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/fb.h>
+#include <linux/backlight.h>
+#include <linux/leds.h>
+#include <linux/workqueue.h>
+#include <linux/slab.h>
+
+#include <linux/i2c/adp8870.h>
+#define ADP8870_EXT_FEATURES
+#define ADP8870_USE_LEDS
+
+
+#define ADP8870_MFDVID  0x00  /* Manufacturer and device ID */
+#define ADP8870_MDCR    0x01  /* Device mode and status */
+#define ADP8870_INT_STAT 0x02  /* Interrupts status */
+#define ADP8870_INT_EN  0x03  /* Interrupts enable */
+#define ADP8870_CFGR    0x04  /* Configuration register */
+#define ADP8870_BLSEL   0x05  /* Sink enable backlight or independent */
+#define ADP8870_PWMLED  0x06  /* PWM Enable Selection Register */
+#define ADP8870_BLOFF   0x07  /* Backlight off timeout */
+#define ADP8870_BLDIM   0x08  /* Backlight dim timeout */
+#define ADP8870_BLFR    0x09  /* Backlight fade in and out rates */
+#define ADP8870_BLMX1   0x0A  /* Backlight (Brightness Level 1-daylight) maximum current */
+#define ADP8870_BLDM1   0x0B  /* Backlight (Brightness Level 1-daylight) dim current */
+#define ADP8870_BLMX2   0x0C  /* Backlight (Brightness Level 2-bright) maximum current */
+#define ADP8870_BLDM2   0x0D  /* Backlight (Brightness Level 2-bright) dim current */
+#define ADP8870_BLMX3   0x0E  /* Backlight (Brightness Level 3-office) maximum current */
+#define ADP8870_BLDM3   0x0F  /* Backlight (Brightness Level 3-office) dim current */
+#define ADP8870_BLMX4   0x10  /* Backlight (Brightness Level 4-indoor) maximum current */
+#define ADP8870_BLDM4   0x11  /* Backlight (Brightness Level 4-indoor) dim current */
+#define ADP8870_BLMX5   0x12  /* Backlight (Brightness Level 5-dark) maximum current */
+#define ADP8870_BLDM5   0x13  /* Backlight (Brightness Level 5-dark) dim current */
+#define ADP8870_ISCLAW  0x1A  /* Independent sink current fade law register */
+#define ADP8870_ISCC    0x1B  /* Independent sink current control register */
+#define ADP8870_ISCT1   0x1C  /* Independent Sink Current Timer Register LED[7:5] */
+#define ADP8870_ISCT2   0x1D  /* Independent Sink Current Timer Register LED[4:1] */
+#define ADP8870_ISCF    0x1E  /* Independent sink current fade register */
+#define ADP8870_ISC1    0x1F  /* Independent Sink Current LED1 */
+#define ADP8870_ISC2    0x20  /* Independent Sink Current LED2 */
+#define ADP8870_ISC3    0x21  /* Independent Sink Current LED3 */
+#define ADP8870_ISC4    0x22  /* Independent Sink Current LED4 */
+#define ADP8870_ISC5    0x23  /* Independent Sink Current LED5 */
+#define ADP8870_ISC6    0x24  /* Independent Sink Current LED6 */
+#define ADP8870_ISC7    0x25  /* Independent Sink Current LED7 (Brightness Level 1-daylight) */
+#define ADP8870_ISC7_L2 0x26  /* Independent Sink Current LED7 (Brightness Level 2-bright) */
+#define ADP8870_ISC7_L3 0x27  /* Independent Sink Current LED7 (Brightness Level 3-office) */
+#define ADP8870_ISC7_L4 0x28  /* Independent Sink Current LED7 (Brightness Level 4-indoor) */
+#define ADP8870_ISC7_L5 0x29  /* Independent Sink Current LED7 (Brightness Level 5-dark) */
+#define ADP8870_CMP_CTL 0x2D  /* ALS Comparator Control Register */
+#define ADP8870_ALS1_EN 0x2E  /* Main ALS comparator level enable */
+#define ADP8870_ALS2_EN 0x2F  /* Second ALS comparator level enable */
+#define ADP8870_ALS1_STAT 0x30  /* Main ALS Comparator Status Register */
+#define ADP8870_ALS2_STAT 0x31  /* Second ALS Comparator Status Register */
+#define ADP8870_L2TRP   0x32  /* L2 comparator reference */
+#define ADP8870_L2HYS   0x33  /* L2 hysteresis */
+#define ADP8870_L3TRP   0x34  /* L3 comparator reference */
+#define ADP8870_L3HYS   0x35  /* L3 hysteresis */
+#define ADP8870_L4TRP   0x36  /* L4 comparator reference */
+#define ADP8870_L4HYS   0x37  /* L4 hysteresis */
+#define ADP8870_L5TRP   0x38  /* L5 comparator reference */
+#define ADP8870_L5HYS   0x39  /* L5 hysteresis */
+#define ADP8870_PH1LEVL 0x40  /* First phototransistor ambient light level-low byte register */
+#define ADP8870_PH1LEVH 0x41  /* First phototransistor ambient light level-high byte register */
+#define ADP8870_PH2LEVL 0x42  /* Second phototransistor ambient light level-low byte register */
+#define ADP8870_PH2LEVH 0x43  /* Second phototransistor ambient light level-high byte register */
+
+#define ADP8870_MANUFID         0x3  /* Analog Devices AD8870 Manufacturer and device ID */
+#define ADP8870_DEVID(x)        ((x) & 0xF)
+#define ADP8870_MANID(x)        ((x) >> 4)
+
+/* MDCR Device mode and status */
+#define D7ALSEN                 (1 << 7)
+#define INT_CFG                 (1 << 6)
+#define NSTBY                   (1 << 5)
+#define DIM_EN                  (1 << 4)
+#define GDWN_DIS                (1 << 3)
+#define SIS_EN                  (1 << 2)
+#define CMP_AUTOEN              (1 << 1)
+#define BLEN                    (1 << 0)
+
+/* ADP8870_ALS1_EN Main ALS comparator level enable */
+#define L5_EN                   (1 << 3)
+#define L4_EN                   (1 << 2)
+#define L3_EN                   (1 << 1)
+#define L2_EN                   (1 << 0)
+
+#define CFGR_BLV_SHIFT          3
+#define CFGR_BLV_MASK           0x7
+#define ADP8870_FLAG_LED_MASK   0xFF
+
+#define FADE_VAL(in, out)       ((0xF & (in)) | ((0xF & (out)) << 4))
+#define BL_CFGR_VAL(law, blv)   ((((blv) & CFGR_BLV_MASK) << CFGR_BLV_SHIFT) | ((0x3 & (law)) << 1))
+#define ALS_CMPR_CFG_VAL(filt)  ((0x7 & (filt)) << 1)
+
+struct adp8870_bl {
+        struct i2c_client *client;
+        struct backlight_device *bl;
+        struct adp8870_led *led;
+        struct adp8870_backlight_platform_data *pdata;
+        struct mutex lock;
+        unsigned long cached_daylight_max;
+        int id;
+        int revid;
+        int current_brightness;
+};
+
+struct adp8870_led {
+        struct led_classdev     cdev;
+        struct work_struct      work;
+        struct i2c_client       *client;
+        enum led_brightness     new_brightness;
+        int                     id;
+        int                     flags;
+};
+
+static int adp8870_read(struct i2c_client *client, int reg, uint8_t *val)
+{
+        int ret;
+
+        ret = i2c_smbus_read_byte_data(client, reg);
+        if (ret < 0) {
+                dev_err(&client->dev, "failed reading at 0x%02x\n", reg);
+                return ret;
+        }
+
+        *val = ret;
+        return 0;
+}
+
+
+static int adp8870_write(struct i2c_client *client, u8 reg, u8 val)
+{
+        int ret = i2c_smbus_write_byte_data(client, reg, val);
+        if (ret)
+                dev_err(&client->dev, "failed to write\n");
+
+        return ret;
+}
+
+static int adp8870_set_bits(struct i2c_client *client, int reg, uint8_t bit_mask)
+{
+        struct adp8870_bl *data = i2c_get_clientdata(client);
+        uint8_t reg_val;
+        int ret;
+
+        mutex_lock(&data->lock);
+
+        ret = adp8870_read(client, reg, &reg_val);
+
+        if (!ret && ((reg_val & bit_mask) == 0)) {
+                reg_val |= bit_mask;
+                ret = adp8870_write(client, reg, reg_val);
+        }
+
+        mutex_unlock(&data->lock);
+        return ret;
+}
+
+static int adp8870_clr_bits(struct i2c_client *client, int reg, uint8_t bit_mask)
+{
+        struct adp8870_bl *data = i2c_get_clientdata(client);
+        uint8_t reg_val;
+        int ret;
+
+        mutex_lock(&data->lock);
+
+        ret = adp8870_read(client, reg, &reg_val);
+
+        if (!ret && (reg_val & bit_mask)) {
+                reg_val &= ~bit_mask;
+                ret = adp8870_write(client, reg, reg_val);
+        }
+
+        mutex_unlock(&data->lock);
+        return ret;
+}
+
+/*
+ * Independent sink / LED
+ */
+#if defined(ADP8870_USE_LEDS)
+static void adp8870_led_work(struct work_struct *work)
+{
+        struct adp8870_led *led = container_of(work, struct adp8870_led, work);
+        adp8870_write(led->client, ADP8870_ISC1 + led->id - 1,
+                         led->new_brightness >> 1);
+}
+
+static void adp8870_led_set(struct led_classdev *led_cdev,
+                           enum led_brightness value)
+{
+        struct adp8870_led *led;
+
+        led = container_of(led_cdev, struct adp8870_led, cdev);
+        led->new_brightness = value;
+        /*
+         * Use workqueue for IO since I2C operations can sleep.
+         */
+        schedule_work(&led->work);
+}
+
+static int adp8870_led_setup(struct adp8870_led *led)
+{
+        struct i2c_client *client = led->client;
+        int ret = 0;
+
+        ret = adp8870_write(client, ADP8870_ISC1 + led->id - 1, 0);
+        if (ret)
+                return ret;
+
+        ret = adp8870_set_bits(client, ADP8870_ISCC, 1 << (led->id - 1));
+        if (ret)
+                return ret;
+
+        if (led->id > 4)
+                ret = adp8870_set_bits(client, ADP8870_ISCT1,
+                                (led->flags & 0x3) << ((led->id - 5) * 2));
+        else
+                ret = adp8870_set_bits(client, ADP8870_ISCT2,
+                                (led->flags & 0x3) << ((led->id - 1) * 2));
+
+        return ret;
+}
+
+static int __devinit adp8870_led_probe(struct i2c_client *client)
+{
+        struct adp8870_backlight_platform_data *pdata =
+                client->dev.platform_data;
+        struct adp8870_bl *data = i2c_get_clientdata(client);
+        struct adp8870_led *led, *led_dat;
+        struct led_info *cur_led;
+        int ret, i;
+
+
+        led = kcalloc(pdata->num_leds, sizeof(*led), GFP_KERNEL);
+        if (led == NULL) {
+                dev_err(&client->dev, "failed to alloc memory\n");
+                return -ENOMEM;
+        }
+
+        ret = adp8870_write(client, ADP8870_ISCLAW, pdata->led_fade_law);
+        if (ret)
+                goto err_free;
+
+        ret = adp8870_write(client, ADP8870_ISCT1,
+                        (pdata->led_on_time & 0x3) << 6);
+        if (ret)
+                goto err_free;
+
+        ret = adp8870_write(client, ADP8870_ISCF,
+                        FADE_VAL(pdata->led_fade_in, pdata->led_fade_out));
+        if (ret)
+                goto err_free;
+
+        for (i = 0; i < pdata->num_leds; ++i) {
+                cur_led = &pdata->leds[i];
+                led_dat = &led[i];
+
+                led_dat->id = cur_led->flags & ADP8870_FLAG_LED_MASK;
+
+                if (led_dat->id > 7 || led_dat->id < 1) {
+                        dev_err(&client->dev, "Invalid LED ID %d\n",
+                                led_dat->id);
+                        goto err;
+                }
+
+                if (pdata->bl_led_assign & (1 << (led_dat->id - 1))) {
+                        dev_err(&client->dev, "LED %d used by Backlight\n",
+                                led_dat->id);
+                        goto err;
+                }
+
+                led_dat->cdev.name = cur_led->name;
+                led_dat->cdev.default_trigger = cur_led->default_trigger;
+                led_dat->cdev.brightness_set = adp8870_led_set;
+                led_dat->cdev.brightness = LED_OFF;
+                led_dat->flags = cur_led->flags >> FLAG_OFFT_SHIFT;
+                led_dat->client = client;
+                led_dat->new_brightness = LED_OFF;
+                INIT_WORK(&led_dat->work, adp8870_led_work);
+
+                ret = led_classdev_register(&client->dev, &led_dat->cdev);
+                if (ret) {
+                        dev_err(&client->dev, "failed to register LED %d\n",
+                                led_dat->id);
+                        goto err;
+                }
+
+                ret = adp8870_led_setup(led_dat);
+                if (ret) {
+                        dev_err(&client->dev, "failed to write\n");
+                        i++;
+                        goto err;
+                }
+        }
+
+        data->led = led;
+
+        return 0;
+
+ err:
+        for (i = i - 1; i >= 0; --i) {
+                led_classdev_unregister(&led[i].cdev);
+                cancel_work_sync(&led[i].work);
+        }
+
+ err_free:
+        kfree(led);
+
+        return ret;
+}
+
+static int __devexit adp8870_led_remove(struct i2c_client *client)
+{
+        struct adp8870_backlight_platform_data *pdata =
+                client->dev.platform_data;
+        struct adp8870_bl *data = i2c_get_clientdata(client);
+        int i;
+
+        for (i = 0; i < pdata->num_leds; i++) {
+                led_classdev_unregister(&data->led[i].cdev);
+                cancel_work_sync(&data->led[i].work);
+        }
+
+        kfree(data->led);
+        return 0;
+}
+#else
+static int __devinit adp8870_led_probe(struct i2c_client *client)
+{
+        return 0;
+}
+
+static int __devexit adp8870_led_remove(struct i2c_client *client)
+{
+        return 0;
+}
+#endif
+
+static int adp8870_bl_set(struct backlight_device *bl, int brightness)
+{
+        struct adp8870_bl *data = bl_get_data(bl);
+        struct i2c_client *client = data->client;
+        int ret = 0;
+
+        if (data->pdata->en_ambl_sens) {
+                if ((brightness > 0) && (brightness < ADP8870_MAX_BRIGHTNESS)) {
+                        /* Disable Ambient Light auto adjust */
+                        ret = adp8870_clr_bits(client, ADP8870_MDCR,
+                                        CMP_AUTOEN);
+                        if (ret)
+                                return ret;
+                        ret = adp8870_write(client, ADP8870_BLMX1, brightness);
+                        if (ret)
+                                return ret;
+                } else {
+                        /*
+                         * MAX_BRIGHTNESS -> Enable Ambient Light auto adjust
+                         * restore daylight l1 sysfs brightness
+                         */
+                        ret = adp8870_write(client, ADP8870_BLMX1,
+                                         data->cached_daylight_max);
+                        if (ret)
+                                return ret;
+
+                        ret = adp8870_set_bits(client, ADP8870_MDCR,
+                                         CMP_AUTOEN);
+                        if (ret)
+                                return ret;
+                }
+        } else {
+                ret = adp8870_write(client, ADP8870_BLMX1, brightness);
+                if (ret)
+                        return ret;
+        }
+
+        if (data->current_brightness && brightness == 0)
+                ret = adp8870_set_bits(client,
+                                ADP8870_MDCR, DIM_EN);
+        else if (data->current_brightness == 0 && brightness)
+                ret = adp8870_clr_bits(client,
+                                ADP8870_MDCR, DIM_EN);
+
+        if (!ret)
+                data->current_brightness = brightness;
+
+        return ret;
+}
+
+static int adp8870_bl_update_status(struct backlight_device *bl)
+{
+        int brightness = bl->props.brightness;
+        if (bl->props.power != FB_BLANK_UNBLANK)
+                brightness = 0;
+
+        if (bl->props.fb_blank != FB_BLANK_UNBLANK)
+                brightness = 0;
+
+        return adp8870_bl_set(bl, brightness);
+}
+
+static int adp8870_bl_get_brightness(struct backlight_device *bl)
+{
+        struct adp8870_bl *data = bl_get_data(bl);
+
+        return data->current_brightness;
+}
+
+static const struct backlight_ops adp8870_bl_ops = {
+        .update_status  = adp8870_bl_update_status,
+        .get_brightness = adp8870_bl_get_brightness,
+};
+
+static int adp8870_bl_setup(struct backlight_device *bl)
+{
+        struct adp8870_bl *data = bl_get_data(bl);
+        struct i2c_client *client = data->client;
+        struct adp8870_backlight_platform_data *pdata = data->pdata;
+        int ret = 0;
+
+        ret = adp8870_write(client, ADP8870_BLSEL, ~pdata->bl_led_assign);
+        if (ret)
+                return ret;
+
+        ret = adp8870_write(client, ADP8870_PWMLED, pdata->pwm_assign);
+        if (ret)
+                return ret;
+
+        ret = adp8870_write(client, ADP8870_BLMX1, pdata->l1_daylight_max);
+        if (ret)
+                return ret;
+
+        ret = adp8870_write(client, ADP8870_BLDM1, pdata->l1_daylight_dim);
+        if (ret)
+                return ret;
+
+        if (pdata->en_ambl_sens) {
+                data->cached_daylight_max = pdata->l1_daylight_max;
+                ret = adp8870_write(client, ADP8870_BLMX2,
+                                                pdata->l2_bright_max);
+                if (ret)
+                        return ret;
+                ret = adp8870_write(client, ADP8870_BLDM2,
+                                                pdata->l2_bright_dim);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_BLMX3,
+                                                pdata->l3_office_max);
+                if (ret)
+                        return ret;
+                ret = adp8870_write(client, ADP8870_BLDM3,
+                                                pdata->l3_office_dim);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_BLMX4,
+                                                pdata->l4_indoor_max);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_BLDM4,
+                                                pdata->l4_indor_dim);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_BLMX5,
+                                                pdata->l5_dark_max);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_BLDM5,
+                                                pdata->l5_dark_dim);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_L2TRP, pdata->l2_trip);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_L2HYS, pdata->l2_hyst);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_L3TRP, pdata->l3_trip);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_L3HYS, pdata->l3_hyst);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_L4TRP, pdata->l4_trip);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_L4HYS, pdata->l4_hyst);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_L5TRP, pdata->l5_trip);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_L5HYS, pdata->l5_hyst);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_ALS1_EN, L5_EN | L4_EN |
+                                                L3_EN | L2_EN);
+                if (ret)
+                        return ret;
+
+                ret = adp8870_write(client, ADP8870_CMP_CTL,
+                        ALS_CMPR_CFG_VAL(pdata->abml_filt));
+                if (ret)
+                        return ret;
+        }
+
+        ret = adp8870_write(client, ADP8870_CFGR,
+                        BL_CFGR_VAL(pdata->bl_fade_law, 0));
+        if (ret)
+                return ret;
+
+        ret = adp8870_write(client, ADP8870_BLFR, FADE_VAL(pdata->bl_fade_in,
+                        pdata->bl_fade_out));
+        if (ret)
+                return ret;
+        /*
+         * ADP8870 Rev0 requires GDWN_DIS bit set
+         */
+
+        ret = adp8870_set_bits(client, ADP8870_MDCR, BLEN | DIM_EN | NSTBY |
+                        (data->revid == 0 ? GDWN_DIS : 0));
+
+        return ret;
+}
+
+static ssize_t adp8870_show(struct device *dev, char *buf, int reg)
+{
+        struct adp8870_bl *data = dev_get_drvdata(dev);
+        int error;
+        uint8_t reg_val;
+
+        mutex_lock(&data->lock);
+        error = adp8870_read(data->client, reg, &reg_val);
+        mutex_unlock(&data->lock);
+
+        if (error < 0)
+                return error;
+
+        return sprintf(buf, "%u\n", reg_val);
+}
+
+static ssize_t adp8870_store(struct device *dev, const char *buf,
+                         size_t count, int reg)
+{
+        struct adp8870_bl *data = dev_get_drvdata(dev);
+        unsigned long val;
+        int ret;
+
+        ret = strict_strtoul(buf, 10, &val);
+        if (ret)
+                return ret;
+
+        mutex_lock(&data->lock);
+        adp8870_write(data->client, reg, val);
+        mutex_unlock(&data->lock);
+
+        return count;
+}
+
+static ssize_t adp8870_bl_l5_dark_max_show(struct device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        return adp8870_show(dev, buf, ADP8870_BLMX5);
+}
+
+static ssize_t adp8870_bl_l5_dark_max_store(struct device *dev,
+                struct device_attribute *attr, const char *buf, size_t count)
+{
+        return adp8870_store(dev, buf, count, ADP8870_BLMX5);
+}
+static DEVICE_ATTR(l5_dark_max, 0664, adp8870_bl_l5_dark_max_show,
+                        adp8870_bl_l5_dark_max_store);
+
+
+static ssize_t adp8870_bl_l4_indoor_max_show(struct device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        return adp8870_show(dev, buf, ADP8870_BLMX4);
+}
+
+static ssize_t adp8870_bl_l4_indoor_max_store(struct device *dev,
+                struct device_attribute *attr, const char *buf, size_t count)
+{
+        return adp8870_store(dev, buf, count, ADP8870_BLMX4);
+}
+static DEVICE_ATTR(l4_indoor_max, 0664, adp8870_bl_l4_indoor_max_show,
+                        adp8870_bl_l4_indoor_max_store);
+
+
+static ssize_t adp8870_bl_l3_office_max_show(struct device *dev,
+                                     struct device_attribute *attr, char *buf)
+{
+        return adp8870_show(dev, buf, ADP8870_BLMX3);
+}
+
+static ssize_t adp8870_bl_l3_office_max_store(struct device *dev,
+                struct device_attribute *attr, const char *buf, size_t count)
+{
+        return adp8870_store(dev, buf, count, ADP8870_BLMX3);
+}
+
+static DEVICE_ATTR(l3_office_max, 0664, adp8870_bl_l3_office_max_show,
+                        adp8870_bl_l3_office_max_store);
+
+static ssize_t adp8870_bl_l2_bright_max_show(struct device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        return adp8870_show(dev, buf, ADP8870_BLMX2);
+}
+
+static ssize_t adp8870_bl_l2_bright_max_store(struct device *dev,
+                struct device_attribute *attr, const char *buf, size_t count)
+{
+        return adp8870_store(dev, buf, count, ADP8870_BLMX2);
+}
+static DEVICE_ATTR(l2_bright_max, 0664, adp8870_bl_l2_bright_max_show,
+                        adp8870_bl_l2_bright_max_store);
+
+static ssize_t adp8870_bl_l1_daylight_max_show(struct device *dev,
+                        struct device_attribute *attr, char *buf)
+{
+        return adp8870_show(dev, buf, ADP8870_BLMX1);
+}
+
+static ssize_t adp8870_bl_l1_daylight_max_store(struct device *dev,
+                struct device_attribute *attr, const char *buf, size_t count)
+{
+        struct adp8870_bl *data = dev_get_drvdata(dev);
+        int ret = strict_strtoul(buf, 10, &data->cached_daylight_max);
+        if (ret)
+                return ret;
+
+        return adp8870_store(dev, buf, count, ADP8870_BLMX1);
+}
+static DEVICE_ATTR(l1_daylight_max, 0664, adp8870_bl_l1_daylight_max_show,
+                        adp8870_bl_l1_daylight_max_store);
+
+static ssize_t adp8870_bl_l5_dark_dim_show(struct device *dev,
+                        struct device_attribute *attr, char *buf)
+{
+        return adp8870_show(dev, buf, ADP8870_BLDM5);
+}
+
+static ssize_t adp8870_bl_l5_dark_dim_store(struct device *dev,
+                                     struct device_attribute *attr,
+                                     const char *buf, size_t count)
+{
+        return adp8870_store(dev, buf, count, ADP8870_BLDM5);
+}
+static DEVICE_ATTR(l5_dark_dim, 0664, adp8870_bl_l5_dark_dim_show,
+                        adp8870_bl_l5_dark_dim_store);
+
+static ssize_t adp8870_bl_l4_indoor_dim_show(struct device *dev,
+                        struct device_attribute *attr, char *buf)
+{
+        return adp8870_show(dev, buf, ADP8870_BLDM4);
+}
+
+static ssize_t adp8870_bl_l4_indoor_dim_store(struct device *dev,
+                                     struct device_attribute *attr,
+                                     const char *buf, size_t count)
+{
+        return adp8870_store(dev, buf, count, ADP8870_BLDM4);
+}
+static DEVICE_ATTR(l4_indoor_dim, 0664, adp8870_bl_l4_indoor_dim_show,
+                        adp8870_bl_l4_indoor_dim_store);
+
+
+static ssize_t adp8870_bl_l3_office_dim_show(struct device *dev,
+                        struct device_attribute *attr, char *buf)
+{
+        return adp8870_show(dev, buf, ADP8870_BLDM3);
+}
+
+static ssize_t adp8870_bl_l3_office_dim_store(struct device *dev,
+                                     struct device_attribute *attr,
+                                     const char *buf, size_t count)
+{
+        return adp8870_store(dev, buf, count, ADP8870_BLDM3);
+}
+static DEVICE_ATTR(l3_office_dim, 0664, adp8870_bl_l3_office_dim_show,
+                        adp8870_bl_l3_office_dim_store);
+
+static ssize_t adp8870_bl_l2_bright_dim_show(struct device *dev,
+                        struct device_attribute *attr, char *buf)
+{
+        return adp8870_show(dev, buf, ADP8870_BLDM2);
+}
+
+static ssize_t adp8870_bl_l2_bright_dim_store(struct device *dev,
+                                     struct device_attribute *attr,
+                                     const char *buf, size_t count)
+{
+        return adp8870_store(dev, buf, count, ADP8870_BLDM2);
+}
+static DEVICE_ATTR(l2_bright_dim, 0664, adp8870_bl_l2_bright_dim_show,
+                        adp8870_bl_l2_bright_dim_store);
+
+static ssize_t adp8870_bl_l1_daylight_dim_show(struct device *dev,
+                                     struct device_attribute *attr, char *buf)
+{
+        return adp8870_show(dev, buf, ADP8870_BLDM1);
+}
+
+static ssize_t adp8870_bl_l1_daylight_dim_store(struct device *dev,
+                                     struct device_attribute *attr,
+                                     const char *buf, size_t count)
+{
+        return adp8870_store(dev, buf, count, ADP8870_BLDM1);
+}
+static DEVICE_ATTR(l1_daylight_dim, 0664, adp8870_bl_l1_daylight_dim_show,
+                        adp8870_bl_l1_daylight_dim_store);
+
+#ifdef ADP8870_EXT_FEATURES
+static ssize_t adp8870_bl_ambient_light_level_show(struct device *dev,
+                                     struct device_attribute *attr, char *buf)
+{
+        struct adp8870_bl *data = dev_get_drvdata(dev);
+        int error;
+        uint8_t reg_val;
+        uint16_t ret_val;
+
+        mutex_lock(&data->lock);
+        error = adp8870_read(data->client, ADP8870_PH1LEVL, &reg_val);
+        if (error < 0) {
+                mutex_unlock(&data->lock);
+                return error;
+        }
+        ret_val = reg_val;
+        error = adp8870_read(data->client, ADP8870_PH1LEVH, &reg_val);
+        mutex_unlock(&data->lock);
+
+        if (error < 0)
+                return error;
+
+        /* Return 13-bit conversion value for the first light sensor */
+        ret_val += (reg_val & 0x1F) << 8;
+
+        return sprintf(buf, "%u\n", ret_val);
+}
+static DEVICE_ATTR(ambient_light_level, 0444,
+                adp8870_bl_ambient_light_level_show, NULL);
+
+static ssize_t adp8870_bl_ambient_light_zone_show(struct device *dev,
+                                     struct device_attribute *attr, char *buf)
+{
+        struct adp8870_bl *data = dev_get_drvdata(dev);
+        int error;
+        uint8_t reg_val;
+
+        mutex_lock(&data->lock);
+        error = adp8870_read(data->client, ADP8870_CFGR, &reg_val);
+        mutex_unlock(&data->lock);
+
+        if (error < 0)
+                return error;
+
+        return sprintf(buf, "%u\n",
+                ((reg_val >> CFGR_BLV_SHIFT) & CFGR_BLV_MASK) + 1);
+}
+
+static ssize_t adp8870_bl_ambient_light_zone_store(struct device *dev,
+                                     struct device_attribute *attr,
+                                     const char *buf, size_t count)
+{
+        struct adp8870_bl *data = dev_get_drvdata(dev);
+        unsigned long val;
+        uint8_t reg_val;
+        int ret;
+
+        ret = strict_strtoul(buf, 10, &val);
+        if (ret)
+                return ret;
+
+        if (val == 0) {
+                /* Enable automatic ambient light sensing */
+                adp8870_set_bits(data->client, ADP8870_MDCR, CMP_AUTOEN);
+        } else if ((val > 0) && (val < 6)) {
+                /* Disable automatic ambient light sensing */
+                adp8870_clr_bits(data->client, ADP8870_MDCR, CMP_AUTOEN);
+
+                /* Set user supplied ambient light zone */
+                mutex_lock(&data->lock);
+                adp8870_read(data->client, ADP8870_CFGR, &reg_val);
+                reg_val &= ~(CFGR_BLV_MASK << CFGR_BLV_SHIFT);
+                reg_val |= (val - 1) << CFGR_BLV_SHIFT;
+                adp8870_write(data->client, ADP8870_CFGR, reg_val);
+                mutex_unlock(&data->lock);
+        }
+
+        return count;
+}
+static DEVICE_ATTR(ambient_light_zone, 0664,
+                adp8870_bl_ambient_light_zone_show,
+                adp8870_bl_ambient_light_zone_store);
+#endif
+
+static struct attribute *adp8870_bl_attributes[] = {
+        &dev_attr_l5_dark_max.attr,
+        &dev_attr_l5_dark_dim.attr,
+        &dev_attr_l4_indoor_max.attr,
+        &dev_attr_l4_indoor_dim.attr,
+        &dev_attr_l3_office_max.attr,
+        &dev_attr_l3_office_dim.attr,
+        &dev_attr_l2_bright_max.attr,
+        &dev_attr_l2_bright_dim.attr,
+        &dev_attr_l1_daylight_max.attr,
+        &dev_attr_l1_daylight_dim.attr,
+#ifdef ADP8870_EXT_FEATURES
+        &dev_attr_ambient_light_level.attr,
+        &dev_attr_ambient_light_zone.attr,
+#endif
+        NULL
+};
+
+static const struct attribute_group adp8870_bl_attr_group = {
+        .attrs = adp8870_bl_attributes,
+};
+
+static int __devinit adp8870_probe(struct i2c_client *client,
+                                        const struct i2c_device_id *id)
+{
+        struct backlight_properties props;
+        struct backlight_device *bl;
+        struct adp8870_bl *data;
+        struct adp8870_backlight_platform_data *pdata =
+                client->dev.platform_data;
+        uint8_t reg_val;
+        int ret;
+
+        if (!i2c_check_functionality(client->adapter,
+                                        I2C_FUNC_SMBUS_BYTE_DATA)) {
+                dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
+                return -EIO;
+        }
+
+        if (!pdata) {
+                dev_err(&client->dev, "no platform data?\n");
+                return -EINVAL;
+        }
+
+        ret = adp8870_read(client, ADP8870_MFDVID, &reg_val);
+        if (ret < 0)
+                return -EIO;
+
+        if (ADP8870_MANID(reg_val) != ADP8870_MANUFID) {
+                dev_err(&client->dev, "failed to probe\n");
+                return -ENODEV;
+        }
+
+        data = kzalloc(sizeof(*data), GFP_KERNEL);
+        if (data == NULL)
+                return -ENOMEM;
+
+        data->revid = ADP8870_DEVID(reg_val);
+        data->client = client;
+        data->pdata = pdata;
+        data->id = id->driver_data;
+        data->current_brightness = 0;
+        i2c_set_clientdata(client, data);
+
+        mutex_init(&data->lock);
+
+        memset(&props, 0, sizeof(props));
+        props.type = BACKLIGHT_RAW;
+        props.max_brightness = props.brightness = ADP8870_MAX_BRIGHTNESS;
+        bl = backlight_device_register(dev_driver_string(&client->dev),
+                        &client->dev, data, &adp8870_bl_ops, &props);
+        if (IS_ERR(bl)) {
+                dev_err(&client->dev, "failed to register backlight\n");
+                ret = PTR_ERR(bl);
+                goto out2;
+        }
+
+        data->bl = bl;
+
+        if (pdata->en_ambl_sens)
+                ret = sysfs_create_group(&bl->dev.kobj,
+                        &adp8870_bl_attr_group);
+
+        if (ret) {
+                dev_err(&client->dev, "failed to register sysfs\n");
+                goto out1;
+        }
+
+        ret = adp8870_bl_setup(bl);
+        if (ret) {
+                ret = -EIO;
+                goto out;
+        }
+
+        backlight_update_status(bl);
+
+        dev_info(&client->dev, "Rev.%d Backlight\n", data->revid);
+
+        if (pdata->num_leds)
+                adp8870_led_probe(client);
+
+        return 0;
+
+out:
+        if (data->pdata->en_ambl_sens)
+                sysfs_remove_group(&data->bl->dev.kobj,
+                        &adp8870_bl_attr_group);
+out1:
+        backlight_device_unregister(bl);
+out2:
+        i2c_set_clientdata(client, NULL);
+        kfree(data);
+
+        return ret;
+}
+
+static int __devexit adp8870_remove(struct i2c_client *client)
+{
+        struct adp8870_bl *data = i2c_get_clientdata(client);
+
+        adp8870_clr_bits(client, ADP8870_MDCR, NSTBY);
+
+        if (data->led)
+                adp8870_led_remove(client);
+
+        if (data->pdata->en_ambl_sens)
+                sysfs_remove_group(&data->bl->dev.kobj,
+                        &adp8870_bl_attr_group);
+
+        backlight_device_unregister(data->bl);
+        i2c_set_clientdata(client, NULL);
+        kfree(data);
+
+        return 0;
+}
+
+#ifdef CONFIG_PM
+static int adp8870_i2c_suspend(struct i2c_client *client, pm_message_t message)
+{
+        adp8870_clr_bits(client, ADP8870_MDCR, NSTBY);
+
+        return 0;
+}
+
+static int adp8870_i2c_resume(struct i2c_client *client)
+{
+        adp8870_set_bits(client, ADP8870_MDCR, NSTBY);
+
+        return 0;
+}
+#else
+#define adp8870_i2c_suspend NULL
+#define adp8870_i2c_resume NULL
+#endif
+
+static const struct i2c_device_id adp8870_id[] = {
+        { "adp8870", 0 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, adp8870_id);
+
+static struct i2c_driver adp8870_driver = {
+        .driver = {
+                .name = KBUILD_MODNAME,
+        },
+        .probe    = adp8870_probe,
+        .remove   = __devexit_p(adp8870_remove),
+        .suspend = adp8870_i2c_suspend,
+        .resume  = adp8870_i2c_resume,
+        .id_table = adp8870_id,
+};
+
+static int __init adp8870_init(void)
+{
+        return i2c_add_driver(&adp8870_driver);
+}
+module_init(adp8870_init);
+
+static void __exit adp8870_exit(void)
+{
+        i2c_del_driver(&adp8870_driver);
+}
+module_exit(adp8870_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("ADP8870 Backlight driver");
+MODULE_ALIAS("platform:adp8870-backlight");
diff --git a/drivers/video/efifb.c b/drivers/video/efifb.c
index 69c49dfce9cf..784139aed079 100644
--- a/drivers/video/efifb.c
+++ b/drivers/video/efifb.c
@@ -541,7 +541,7 @@ static int __init efifb_init(void)
          */
         ret = platform_driver_probe(&efifb_driver, efifb_probe);
         if (ret) {
-                platform_device_unregister(&efifb_driver);
+                platform_device_unregister(&efifb_device);
                 return ret;
         }
 
diff --git a/drivers/video/s3c-fb.c b/drivers/video/s3c-fb.c
index 0352afa49a39..4aecf213c9be 100644
--- a/drivers/video/s3c-fb.c
+++ b/drivers/video/s3c-fb.c
@@ -235,13 +235,12 @@ static int s3c_fb_check_var(struct fb_var_screeninfo *var,
                             struct fb_info *info)
 {
         struct s3c_fb_win *win = info->par;
-        struct s3c_fb_pd_win *windata = win->windata;
         struct s3c_fb *sfb = win->parent;
 
         dev_dbg(sfb->dev, "checking parameters\n");
 
-        var->xres_virtual = max((unsigned int)windata->virtual_x, var->xres);
-        var->yres_virtual = max((unsigned int)windata->virtual_y, var->yres);
+        var->xres_virtual = max(var->xres_virtual, var->xres);
+        var->yres_virtual = max(var->yres_virtual, var->yres);
 
         if (!s3c_fb_validate_win_bpp(win, var->bits_per_pixel)) {
                 dev_dbg(sfb->dev, "win %d: unsupported bpp %d\n",
@@ -558,6 +557,13 @@ static int s3c_fb_set_par(struct fb_info *info)
         vidosd_set_alpha(win, alpha);
         vidosd_set_size(win, data);
 
+        /* Enable DMA channel for this window */
+        if (sfb->variant.has_shadowcon) {
+                data = readl(sfb->regs + SHADOWCON);
+                data |= SHADOWCON_CHx_ENABLE(win_no);
+                writel(data, sfb->regs + SHADOWCON);
+        }
+
         data = WINCONx_ENWIN;
 
         /* note, since we have to round up the bits-per-pixel, we end up
@@ -637,13 +643,6 @@ static int s3c_fb_set_par(struct fb_info *info)
         writel(data, regs + sfb->variant.wincon + (win_no * 4));
         writel(0x0, regs + sfb->variant.winmap + (win_no * 4));
 
-        /* Enable DMA channel for this window */
-        if (sfb->variant.has_shadowcon) {
-                data = readl(sfb->regs + SHADOWCON);
-                data |= SHADOWCON_CHx_ENABLE(win_no);
-                writel(data, sfb->regs + SHADOWCON);
-        }
-
         shadow_protect_win(win, 0);
 
         return 0;
@@ -1487,11 +1486,10 @@ static int __devexit s3c_fb_remove(struct platform_device *pdev)
 
         release_mem_region(sfb->regs_res->start, resource_size(sfb->regs_res));
 
-        kfree(sfb);
-
         pm_runtime_put_sync(sfb->dev);
         pm_runtime_disable(sfb->dev);
 
+        kfree(sfb);
         return 0;
 }
 
diff --git a/drivers/video/sh_mobile_hdmi.c b/drivers/video/sh_mobile_hdmi.c
index 6ae40b630dc9..7d54e2c612f7 100644
--- a/drivers/video/sh_mobile_hdmi.c
+++ b/drivers/video/sh_mobile_hdmi.c
@@ -1127,23 +1127,16 @@ static void sh_hdmi_edid_work_fn(struct work_struct *work)
                 struct fb_info *info = hdmi->info;
                 unsigned long parent_rate = 0, hdmi_rate;
 
-                /* A device has been plugged in */
-                pm_runtime_get_sync(hdmi->dev);
-
                 ret = sh_hdmi_read_edid(hdmi, &hdmi_rate, &parent_rate);
-                if (ret < 0) {
-                        pm_runtime_put(hdmi->dev);
+                if (ret < 0)
                         goto out;
-                }
 
                 hdmi->hp_state = HDMI_HOTPLUG_EDID_DONE;
 
                 /* Reconfigure the clock */
                 ret = sh_hdmi_clk_configure(hdmi, hdmi_rate, parent_rate);
-                if (ret < 0) {
-                        pm_runtime_put(hdmi->dev);
+                if (ret < 0)
                         goto out;
-                }
 
                 msleep(10);
                 sh_hdmi_configure(hdmi);
@@ -1191,7 +1184,6 @@ static void sh_hdmi_edid_work_fn(struct work_struct *work)
                 fb_set_suspend(hdmi->info, 1);
 
                 console_unlock();
-                pm_runtime_put(hdmi->dev);
         }
 
 out:
@@ -1312,7 +1304,7 @@ static int __init sh_hdmi_probe(struct platform_device *pdev)
         INIT_DELAYED_WORK(&hdmi->edid_work, sh_hdmi_edid_work_fn);
 
         pm_runtime_enable(&pdev->dev);
-        pm_runtime_resume(&pdev->dev);
+        pm_runtime_get_sync(&pdev->dev);
 
         /* Product and revision IDs are 0 in sh-mobile version */
         dev_info(&pdev->dev, "Detected HDMI controller 0x%x:0x%x\n",
@@ -1340,7 +1332,7 @@ static int __init sh_hdmi_probe(struct platform_device *pdev)
 ecodec:
         free_irq(irq, hdmi);
 ereqirq:
-        pm_runtime_suspend(&pdev->dev);
+        pm_runtime_put(&pdev->dev);
         pm_runtime_disable(&pdev->dev);
         iounmap(hdmi->base);
 emap:
@@ -1377,7 +1369,7 @@ static int __exit sh_hdmi_remove(struct platform_device *pdev)
         free_irq(irq, hdmi);
         /* Wait for already scheduled work */
         cancel_delayed_work_sync(&hdmi->edid_work);
-        pm_runtime_suspend(&pdev->dev);
+        pm_runtime_put(&pdev->dev);
         pm_runtime_disable(&pdev->dev);
         clk_disable(hdmi->hdmi_clk);
         clk_put(hdmi->hdmi_clk);
diff --git a/drivers/w1/masters/Kconfig b/drivers/w1/masters/Kconfig
index 00d615d7aa21..979d6eed9a0f 100644
--- a/drivers/w1/masters/Kconfig
+++ b/drivers/w1/masters/Kconfig
@@ -42,7 +42,7 @@ config W1_MASTER_MXC
 
 config W1_MASTER_DS1WM
         tristate "Maxim DS1WM 1-wire busmaster"
-        depends on W1
+        depends on W1 && GENERIC_HARDIRQS
         help
           Say Y here to enable the DS1WM 1-wire driver, such as that
           in HP iPAQ devices like h5xxx, h2200, and ASIC3-based like
diff --git a/fs/cifs/cache.c b/fs/cifs/cache.c
index dd8584d35a14..545509c3313b 100644
--- a/fs/cifs/cache.c
+++ b/fs/cifs/cache.c
@@ -92,7 +92,7 @@ static uint16_t cifs_server_get_key(const void *cookie_netfs_data,
                 break;
 
         default:
-                cERROR(1, "CIFS: Unknown network family '%d'", sa->sa_family);
+                cERROR(1, "Unknown network family '%d'", sa->sa_family);
                 key_len = 0;
                 break;
         }
@@ -152,7 +152,7 @@ static uint16_t cifs_super_get_key(const void *cookie_netfs_data, void *buffer,
 
         sharename = extract_sharename(tcon->treeName);
         if (IS_ERR(sharename)) {
-                cFYI(1, "CIFS: couldn't extract sharename\n");
+                cFYI(1, "%s: couldn't extract sharename\n", __func__);
                 sharename = NULL;
                 return 0;
         }
@@ -302,7 +302,7 @@ static void cifs_fscache_inode_now_uncached(void *cookie_netfs_data)
         pagevec_init(&pvec, 0);
         first = 0;
 
-        cFYI(1, "cifs inode 0x%p now uncached", cifsi);
+        cFYI(1, "%s: cifs inode 0x%p now uncached", __func__, cifsi);
 
         for (;;) {
                 nr_pages = pagevec_lookup(&pvec,
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 989442dcfb45..e9def996e383 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -352,6 +352,37 @@ cifs_show_address(struct seq_file *s, struct TCP_Server_Info *server)
         }
 }
 
+static void
+cifs_show_security(struct seq_file *s, struct TCP_Server_Info *server)
+{
+        seq_printf(s, ",sec=");
+
+        switch (server->secType) {
+        case LANMAN:
+                seq_printf(s, "lanman");
+                break;
+        case NTLMv2:
+                seq_printf(s, "ntlmv2");
+                break;
+        case NTLM:
+                seq_printf(s, "ntlm");
+                break;
+        case Kerberos:
+                seq_printf(s, "krb5");
+                break;
+        case RawNTLMSSP:
+                seq_printf(s, "ntlmssp");
+                break;
+        default:
+                /* shouldn't ever happen */
+                seq_printf(s, "unknown");
+                break;
+        }
+
+        if (server->sec_mode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
+                seq_printf(s, "i");
+}
+
 /*
  * cifs_show_options() is for displaying mount options in /proc/mounts.
  * Not all settable options are displayed but most of the important
@@ -365,6 +396,8 @@ cifs_show_options(struct seq_file *s, struct vfsmount *m)
         struct sockaddr *srcaddr;
         srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr;
 
+        cifs_show_security(s, tcon->ses->server);
+
         seq_printf(s, ",unc=%s", tcon->treeName);
 
         if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER)
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 64313f778ebf..0900e1658c96 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -129,5 +129,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
 extern const struct export_operations cifs_export_ops;
 #endif /* CIFS_NFSD_EXPORT */
 
-#define CIFS_VERSION   "1.72"
+#define CIFS_VERSION   "1.73"
 #endif                          /* _CIFSFS_H */
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index bb659eb73810..12cf72dd0c42 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -152,7 +152,7 @@ cifs_reconnect(struct TCP_Server_Info *server)
                 mid_entry->callback(mid_entry);
         }
 
-        while (server->tcpStatus == CifsNeedReconnect) {
+        do {
                 try_to_freeze();
 
                 /* we should try only the port we connected to before */
@@ -167,7 +167,7 @@ cifs_reconnect(struct TCP_Server_Info *server)
                                 server->tcpStatus = CifsNeedNegotiate;
                         spin_unlock(&GlobalMid_Lock);
                 }
-        }
+        } while (server->tcpStatus == CifsNeedReconnect);
 
         return rc;
 }
@@ -2149,7 +2149,10 @@ cifs_put_tlink(struct tcon_link *tlink)
 }
 
 static inline struct tcon_link *
-cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb);
+cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb)
+{
+        return cifs_sb->master_tlink;
+}
 
 static int
 compare_mount_options(struct super_block *sb, struct cifs_mnt_data *mnt_data)
@@ -3171,6 +3174,10 @@ out:
         return rc;
 }
 
+/*
+ * Issue a TREE_CONNECT request. Note that for IPC$ shares, that the tcon
+ * pointer may be NULL.
+ */
 int
 CIFSTCon(unsigned int xid, struct cifs_ses *ses,
          const char *tree, struct cifs_tcon *tcon,
@@ -3205,7 +3212,7 @@ CIFSTCon(unsigned int xid, struct cifs_ses *ses,
         pSMB->AndXCommand = 0xFF;
         pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO);
         bcc_ptr = &pSMB->Password[0];
-        if ((ses->server->sec_mode) & SECMODE_USER) {
+        if (!tcon || (ses->server->sec_mode & SECMODE_USER)) {
                 pSMB->PasswordLength = cpu_to_le16(1);  /* minimum */
                 *bcc_ptr = 0; /* password is null byte */
                 bcc_ptr++;              /* skip password */
@@ -3371,7 +3378,7 @@ int cifs_negotiate_protocol(unsigned int xid, struct cifs_ses *ses)
         }
         if (rc == 0) {
                 spin_lock(&GlobalMid_Lock);
-                if (server->tcpStatus != CifsExiting)
+                if (server->tcpStatus == CifsNeedNegotiate)
                         server->tcpStatus = CifsGood;
                 else
                         rc = -EHOSTDOWN;
@@ -3484,12 +3491,6 @@ out:
         return tcon;
 }
 
-static inline struct tcon_link *
-cifs_sb_master_tlink(struct cifs_sb_info *cifs_sb)
-{
-        return cifs_sb->master_tlink;
-}
-
 struct cifs_tcon *
 cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb)
 {
diff --git a/fs/cifs/fscache.c b/fs/cifs/fscache.c
index d368a47ba5eb..816696621ec9 100644
--- a/fs/cifs/fscache.c
+++ b/fs/cifs/fscache.c
@@ -28,14 +28,14 @@ void cifs_fscache_get_client_cookie(struct TCP_Server_Info *server)
         server->fscache =
                 fscache_acquire_cookie(cifs_fscache_netfs.primary_index,
                                 &cifs_fscache_server_index_def, server);
-        cFYI(1, "CIFS: get client cookie (0x%p/0x%p)", server,
-                                server->fscache);
+        cFYI(1, "%s: (0x%p/0x%p)", __func__, server,
+                        server->fscache);
 }
 
 void cifs_fscache_release_client_cookie(struct TCP_Server_Info *server)
 {
-        cFYI(1, "CIFS: release client cookie (0x%p/0x%p)", server,
-                                server->fscache);
+        cFYI(1, "%s: (0x%p/0x%p)", __func__, server,
+                        server->fscache);
         fscache_relinquish_cookie(server->fscache, 0);
         server->fscache = NULL;
 }
@@ -47,13 +47,13 @@ void cifs_fscache_get_super_cookie(struct cifs_tcon *tcon)
         tcon->fscache =
                 fscache_acquire_cookie(server->fscache,
                                 &cifs_fscache_super_index_def, tcon);
-        cFYI(1, "CIFS: get superblock cookie (0x%p/0x%p)",
-                                server->fscache, tcon->fscache);
+        cFYI(1, "%s: (0x%p/0x%p)", __func__, server->fscache,
+                        tcon->fscache);
 }
 
 void cifs_fscache_release_super_cookie(struct cifs_tcon *tcon)
 {
-        cFYI(1, "CIFS: releasing superblock cookie (0x%p)", tcon->fscache);
+        cFYI(1, "%s: (0x%p)", __func__, tcon->fscache);
         fscache_relinquish_cookie(tcon->fscache, 0);
         tcon->fscache = NULL;
 }
@@ -70,8 +70,8 @@ static void cifs_fscache_enable_inode_cookie(struct inode *inode)
         if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE) {
                 cifsi->fscache = fscache_acquire_cookie(tcon->fscache,
                                 &cifs_fscache_inode_object_def, cifsi);
-                cFYI(1, "CIFS: got FH cookie (0x%p/0x%p)", tcon->fscache,
-                                cifsi->fscache);
+                cFYI(1, "%s: got FH cookie (0x%p/0x%p)", __func__,
+                                tcon->fscache, cifsi->fscache);
         }
 }
 
@@ -80,8 +80,7 @@ void cifs_fscache_release_inode_cookie(struct inode *inode)
         struct cifsInodeInfo *cifsi = CIFS_I(inode);
 
         if (cifsi->fscache) {
-                cFYI(1, "CIFS releasing inode cookie (0x%p)",
-                                cifsi->fscache);
+                cFYI(1, "%s: (0x%p)", __func__, cifsi->fscache);
                 fscache_relinquish_cookie(cifsi->fscache, 0);
                 cifsi->fscache = NULL;
         }
@@ -92,8 +91,7 @@ static void cifs_fscache_disable_inode_cookie(struct inode *inode)
         struct cifsInodeInfo *cifsi = CIFS_I(inode);
 
         if (cifsi->fscache) {
-                cFYI(1, "CIFS disabling inode cookie (0x%p)",
-                                cifsi->fscache);
+                cFYI(1, "%s: (0x%p)", __func__, cifsi->fscache);
                 fscache_relinquish_cookie(cifsi->fscache, 1);
                 cifsi->fscache = NULL;
         }
@@ -121,8 +119,8 @@ void cifs_fscache_reset_inode_cookie(struct inode *inode)
                                         cifs_sb_master_tcon(cifs_sb)->fscache,
                                         &cifs_fscache_inode_object_def,
                                         cifsi);
-                cFYI(1, "CIFS: new cookie 0x%p oldcookie 0x%p",
-                                cifsi->fscache, old);
+                cFYI(1, "%s: new cookie 0x%p oldcookie 0x%p",
+                                __func__, cifsi->fscache, old);
         }
 }
 
@@ -132,8 +130,8 @@ int cifs_fscache_release_page(struct page *page, gfp_t gfp)
                 struct inode *inode = page->mapping->host;
                 struct cifsInodeInfo *cifsi = CIFS_I(inode);
 
-                cFYI(1, "CIFS: fscache release page (0x%p/0x%p)",
-                                page, cifsi->fscache);
+                cFYI(1, "%s: (0x%p/0x%p)", __func__, page,
+                                cifsi->fscache);
                 if (!fscache_maybe_release_page(cifsi->fscache, page, gfp))
                         return 0;
         }
@@ -144,8 +142,7 @@ int cifs_fscache_release_page(struct page *page, gfp_t gfp)
 static void cifs_readpage_from_fscache_complete(struct page *page, void *ctx,
                                                 int error)
 {
-        cFYI(1, "CFS: readpage_from_fscache_complete (0x%p/%d)",
-                        page, error);
+        cFYI(1, "%s: (0x%p/%d)", __func__, page, error);
         if (!error)
                 SetPageUptodate(page);
         unlock_page(page);
@@ -158,7 +155,7 @@ int __cifs_readpage_from_fscache(struct inode *inode, struct page *page)
 {
         int ret;
 
-        cFYI(1, "CIFS: readpage_from_fscache(fsc:%p, p:%p, i:0x%p",
+        cFYI(1, "%s: (fsc:%p, p:%p, i:0x%p", __func__,
                         CIFS_I(inode)->fscache, page, inode);
         ret = fscache_read_or_alloc_page(CIFS_I(inode)->fscache, page,
                                          cifs_readpage_from_fscache_complete,
@@ -167,11 +164,11 @@ int __cifs_readpage_from_fscache(struct inode *inode, struct page *page)
         switch (ret) {
 
         case 0: /* page found in fscache, read submitted */
-                cFYI(1, "CIFS: readpage_from_fscache: submitted");
+                cFYI(1, "%s: submitted", __func__);
                 return ret;
         case -ENOBUFS:  /* page won't be cached */
         case -ENODATA:  /* page not in cache */
-                cFYI(1, "CIFS: readpage_from_fscache %d", ret);
+                cFYI(1, "%s: %d", __func__, ret);
                 return 1;
 
         default:
@@ -190,7 +187,7 @@ int __cifs_readpages_from_fscache(struct inode *inode,
 {
         int ret;
 
-        cFYI(1, "CIFS: __cifs_readpages_from_fscache (0x%p/%u/0x%p)",
+        cFYI(1, "%s: (0x%p/%u/0x%p)", __func__,
                         CIFS_I(inode)->fscache, *nr_pages, inode);
         ret = fscache_read_or_alloc_pages(CIFS_I(inode)->fscache, mapping,
                                           pages, nr_pages,
@@ -199,12 +196,12 @@ int __cifs_readpages_from_fscache(struct inode *inode,
                                           mapping_gfp_mask(mapping));
         switch (ret) {
         case 0: /* read submitted to the cache for all pages */
-                cFYI(1, "CIFS: readpages_from_fscache: submitted");
+                cFYI(1, "%s: submitted", __func__);
                 return ret;
 
         case -ENOBUFS:  /* some pages are not cached and can't be */
         case -ENODATA:  /* some pages are not cached */
-                cFYI(1, "CIFS: readpages_from_fscache: no page");
+                cFYI(1, "%s: no page", __func__);
                 return 1;
 
         default:
@@ -218,7 +215,7 @@ void __cifs_readpage_to_fscache(struct inode *inode, struct page *page)
 {
         int ret;
 
-        cFYI(1, "CIFS: readpage_to_fscache(fsc: %p, p: %p, i: %p",
+        cFYI(1, "%s: (fsc: %p, p: %p, i: %p)", __func__,
                         CIFS_I(inode)->fscache, page, inode);
         ret = fscache_write_page(CIFS_I(inode)->fscache, page, GFP_KERNEL);
         if (ret != 0)
@@ -230,7 +227,7 @@ void __cifs_fscache_invalidate_page(struct page *page, struct inode *inode)
         struct cifsInodeInfo *cifsi = CIFS_I(inode);
         struct fscache_cookie *cookie = cifsi->fscache;
 
-        cFYI(1, "CIFS: fscache invalidatepage (0x%p/0x%p)", page, cookie);
+        cFYI(1, "%s: (0x%p/0x%p)", __func__, page, cookie);
         fscache_wait_on_page_write(cookie, page);
         fscache_uncache_page(cookie, page);
 }
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index e9b8e5926bef..76bff2bff15e 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -88,7 +88,7 @@ static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm,
         pmd_t pmd = *pmdp;
         pmd_clear(mm, address, pmdp);
         return pmd;
-})
+}
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 #endif
 
diff --git a/include/linux/i2c/adp8870.h b/include/linux/i2c/adp8870.h
new file mode 100644
index 000000000000..624dceccbd5b
--- /dev/null
+++ b/include/linux/i2c/adp8870.h
@@ -0,0 +1,153 @@
+/*
+ * Definitions and platform data for Analog Devices
+ * Backlight drivers ADP8870
+ *
+ * Copyright 2009-2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __LINUX_I2C_ADP8870_H
+#define __LINUX_I2C_ADP8870_H
+
+#define ID_ADP8870              8870
+
+#define ADP8870_MAX_BRIGHTNESS  0x7F
+#define FLAG_OFFT_SHIFT 8
+
+/*
+ * LEDs subdevice platform data
+ */
+
+#define ADP8870_LED_DIS_BLINK   (0 << FLAG_OFFT_SHIFT)
+#define ADP8870_LED_OFFT_600ms  (1 << FLAG_OFFT_SHIFT)
+#define ADP8870_LED_OFFT_1200ms (2 << FLAG_OFFT_SHIFT)
+#define ADP8870_LED_OFFT_1800ms (3 << FLAG_OFFT_SHIFT)
+
+#define ADP8870_LED_ONT_200ms   0
+#define ADP8870_LED_ONT_600ms   1
+#define ADP8870_LED_ONT_800ms   2
+#define ADP8870_LED_ONT_1200ms  3
+
+#define ADP8870_LED_D7          (7)
+#define ADP8870_LED_D6          (6)
+#define ADP8870_LED_D5          (5)
+#define ADP8870_LED_D4          (4)
+#define ADP8870_LED_D3          (3)
+#define ADP8870_LED_D2          (2)
+#define ADP8870_LED_D1          (1)
+
+/*
+ * Backlight subdevice platform data
+ */
+
+#define ADP8870_BL_D7           (1 << 6)
+#define ADP8870_BL_D6           (1 << 5)
+#define ADP8870_BL_D5           (1 << 4)
+#define ADP8870_BL_D4           (1 << 3)
+#define ADP8870_BL_D3           (1 << 2)
+#define ADP8870_BL_D2           (1 << 1)
+#define ADP8870_BL_D1           (1 << 0)
+
+#define ADP8870_FADE_T_DIS      0       /* Fade Timer Disabled */
+#define ADP8870_FADE_T_300ms    1       /* 0.3 Sec */
+#define ADP8870_FADE_T_600ms    2
+#define ADP8870_FADE_T_900ms    3
+#define ADP8870_FADE_T_1200ms   4
+#define ADP8870_FADE_T_1500ms   5
+#define ADP8870_FADE_T_1800ms   6
+#define ADP8870_FADE_T_2100ms   7
+#define ADP8870_FADE_T_2400ms   8
+#define ADP8870_FADE_T_2700ms   9
+#define ADP8870_FADE_T_3000ms   10
+#define ADP8870_FADE_T_3500ms   11
+#define ADP8870_FADE_T_4000ms   12
+#define ADP8870_FADE_T_4500ms   13
+#define ADP8870_FADE_T_5000ms   14
+#define ADP8870_FADE_T_5500ms   15      /* 5.5 Sec */
+
+#define ADP8870_FADE_LAW_LINEAR 0
+#define ADP8870_FADE_LAW_SQUARE 1
+#define ADP8870_FADE_LAW_CUBIC1 2
+#define ADP8870_FADE_LAW_CUBIC2 3
+
+#define ADP8870_BL_AMBL_FILT_80ms       0       /* Light sensor filter time */
+#define ADP8870_BL_AMBL_FILT_160ms      1
+#define ADP8870_BL_AMBL_FILT_320ms      2
+#define ADP8870_BL_AMBL_FILT_640ms      3
+#define ADP8870_BL_AMBL_FILT_1280ms     4
+#define ADP8870_BL_AMBL_FILT_2560ms     5
+#define ADP8870_BL_AMBL_FILT_5120ms     6
+#define ADP8870_BL_AMBL_FILT_10240ms    7       /* 10.24 sec */
+
+/*
+ * Blacklight current 0..30mA
+ */
+#define ADP8870_BL_CUR_mA(I)            ((I * 127) / 30)
+
+/*
+ * L2 comparator current 0..1106uA
+ */
+#define ADP8870_L2_COMP_CURR_uA(I)      ((I * 255) / 1106)
+
+/*
+ * L3 comparator current 0..551uA
+ */
+#define ADP8870_L3_COMP_CURR_uA(I)      ((I * 255) / 551)
+
+/*
+ * L4 comparator current 0..275uA
+ */
+#define ADP8870_L4_COMP_CURR_uA(I)      ((I * 255) / 275)
+
+/*
+ * L5 comparator current 0..138uA
+ */
+#define ADP8870_L5_COMP_CURR_uA(I)      ((I * 255) / 138)
+
+struct adp8870_backlight_platform_data {
+        u8 bl_led_assign;       /* 1 = Backlight 0 = Individual LED */
+        u8 pwm_assign;          /* 1 = Enables PWM mode */
+
+        u8 bl_fade_in;          /* Backlight Fade-In Timer */
+        u8 bl_fade_out;         /* Backlight Fade-Out Timer */
+        u8 bl_fade_law;         /* fade-on/fade-off transfer characteristic */
+
+        u8 en_ambl_sens;        /* 1 = enable ambient light sensor */
+        u8 abml_filt;           /* Light sensor filter time */
+
+        u8 l1_daylight_max;     /* use BL_CUR_mA(I) 0 <= I <= 30 mA */
+        u8 l1_daylight_dim;     /* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
+        u8 l2_bright_max;       /* use BL_CUR_mA(I) 0 <= I <= 30 mA */
+        u8 l2_bright_dim;       /* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
+        u8 l3_office_max;       /* use BL_CUR_mA(I) 0 <= I <= 30 mA */
+        u8 l3_office_dim;       /* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
+        u8 l4_indoor_max;       /* use BL_CUR_mA(I) 0 <= I <= 30 mA */
+        u8 l4_indor_dim;        /* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
+        u8 l5_dark_max;         /* use BL_CUR_mA(I) 0 <= I <= 30 mA */
+        u8 l5_dark_dim;         /* typ = 0, use BL_CUR_mA(I) 0 <= I <= 30 mA */
+
+        u8 l2_trip;             /* use L2_COMP_CURR_uA(I) 0 <= I <= 1106 uA */
+        u8 l2_hyst;             /* use L2_COMP_CURR_uA(I) 0 <= I <= 1106 uA */
+        u8 l3_trip;             /* use L3_COMP_CURR_uA(I) 0 <= I <= 551 uA */
+        u8 l3_hyst;             /* use L3_COMP_CURR_uA(I) 0 <= I <= 551 uA */
+        u8 l4_trip;             /* use L4_COMP_CURR_uA(I) 0 <= I <= 275 uA */
+        u8 l4_hyst;             /* use L4_COMP_CURR_uA(I) 0 <= I <= 275 uA */
+        u8 l5_trip;             /* use L5_COMP_CURR_uA(I) 0 <= I <= 138 uA */
+        u8 l5_hyst;             /* use L6_COMP_CURR_uA(I) 0 <= I <= 138 uA */
+
+        /**
+         * Independent Current Sinks / LEDS
+         * Sinks not assigned to the Backlight can be exposed to
+         * user space using the LEDS CLASS interface
+         */
+
+        int num_leds;
+        struct led_info *leds;
+        u8 led_fade_in;         /* LED Fade-In Timer */
+        u8 led_fade_out;        /* LED Fade-Out Timer */
+        u8 led_fade_law;        /* fade-on/fade-off transfer characteristic */
+        u8 led_on_time;
+};
+
+#endif /* __LINUX_I2C_ADP8870_H */
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index fb0e7329fee1..953352a88336 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -671,8 +671,8 @@ struct sysinfo {
 
 #ifdef __CHECKER__
 #define BUILD_BUG_ON_NOT_POWER_OF_2(n)
-#define BUILD_BUG_ON_ZERO(e)
-#define BUILD_BUG_ON_NULL(e)
+#define BUILD_BUG_ON_ZERO(e) (0)
+#define BUILD_BUG_ON_NULL(e) ((void*)0)
 #define BUILD_BUG_ON(condition)
 #else /* __CHECKER__ */
 
diff --git a/include/linux/kmsg_dump.h b/include/linux/kmsg_dump.h
index 2a0d7d651dc3..ee0c952188de 100644
--- a/include/linux/kmsg_dump.h
+++ b/include/linux/kmsg_dump.h
@@ -12,6 +12,7 @@
 #ifndef _LINUX_KMSG_DUMP_H
 #define _LINUX_KMSG_DUMP_H
 
+#include <linux/errno.h>
 #include <linux/list.h>
 
 enum kmsg_dump_reason {
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 9724a38ee69d..50940da6adf3 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -84,6 +84,7 @@ int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem);
 
 extern struct mem_cgroup *try_get_mem_cgroup_from_page(struct page *page);
 extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p);
+extern struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm);
 
 static inline
 int mm_match_cgroup(const struct mm_struct *mm, const struct mem_cgroup *cgroup)
@@ -246,6 +247,11 @@ static inline struct mem_cgroup *try_get_mem_cgroup_from_page(struct page *page)
         return NULL;
 }
 
+static inline struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm)
+{
+        return NULL;
+}
+
 static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem)
 {
         return 1;
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 384eb5fe530b..e70564647039 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -358,6 +358,7 @@ struct backing_dev_info;
 extern struct mm_struct *swap_token_mm;
 extern void grab_swap_token(struct mm_struct *);
 extern void __put_swap_token(struct mm_struct *);
+extern void disable_swap_token(struct mem_cgroup *memcg);
 
 static inline int has_swap_token(struct mm_struct *mm)
 {
@@ -370,11 +371,6 @@ static inline void put_swap_token(struct mm_struct *mm)
                 __put_swap_token(mm);
 }
 
-static inline void disable_swap_token(void)
-{
-        put_swap_token(swap_token_mm);
-}
-
 #ifdef CONFIG_CGROUP_MEM_RES_CTLR
 extern void
 mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent, bool swapout);
@@ -500,7 +496,7 @@ static inline int has_swap_token(struct mm_struct *mm)
         return 0;
 }
 
-static inline void disable_swap_token(void)
+static inline void disable_swap_token(struct mem_cgroup *memcg)
 {
 }
 
diff --git a/include/linux/topology.h b/include/linux/topology.h
index b91a40e847d2..fc839bfa7935 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -60,7 +60,7 @@ int arch_update_cpu_topology(void);
  * (in whatever arch specific measurement units returned by node_distance())
  * then switch on zone reclaim on boot.
  */
-#define RECLAIM_DISTANCE 20
+#define RECLAIM_DISTANCE 30
 #endif
 #ifndef PENALTY_FOR_NODE_WITH_CPUS
 #define PENALTY_FOR_NODE_WITH_CPUS      (1)
diff --git a/include/linux/uts.h b/include/linux/uts.h
index 73eb1ed36ec4..6ddbd86377de 100644
--- a/include/linux/uts.h
+++ b/include/linux/uts.h
@@ -9,7 +9,7 @@
 #endif
 
 #ifndef UTS_NODENAME
-#define UTS_NODENAME "(none)"   /* set by sethostname() */
+#define UTS_NODENAME CONFIG_DEFAULT_HOSTNAME /* set by sethostname() */
 #endif
 
 #ifndef UTS_DOMAINNAME
diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
index ea422aaa23e1..b2c33bd955fa 100644
--- a/include/trace/events/vmscan.h
+++ b/include/trace/events/vmscan.h
@@ -6,6 +6,8 @@
 
 #include <linux/types.h>
 #include <linux/tracepoint.h>
+#include <linux/mm.h>
+#include <linux/memcontrol.h>
 #include "gfpflags.h"
 
 #define RECLAIM_WB_ANON         0x0001u
@@ -310,6 +312,87 @@ TRACE_EVENT(mm_vmscan_lru_shrink_inactive,
                 show_reclaim_flags(__entry->reclaim_flags))
 );
 
+TRACE_EVENT(replace_swap_token,
+        TP_PROTO(struct mm_struct *old_mm,
+                 struct mm_struct *new_mm),
+
+        TP_ARGS(old_mm, new_mm),
+
+        TP_STRUCT__entry(
+                __field(struct mm_struct*,      old_mm)
+                __field(unsigned int,           old_prio)
+                __field(struct mm_struct*,      new_mm)
+                __field(unsigned int,           new_prio)
+        ),
+
+        TP_fast_assign(
+                __entry->old_mm   = old_mm;
+                __entry->old_prio = old_mm ? old_mm->token_priority : 0;
+                __entry->new_mm   = new_mm;
+                __entry->new_prio = new_mm->token_priority;
+        ),
+
+        TP_printk("old_token_mm=%p old_prio=%u new_token_mm=%p new_prio=%u",
+                  __entry->old_mm, __entry->old_prio,
+                  __entry->new_mm, __entry->new_prio)
+);
+
+DECLARE_EVENT_CLASS(put_swap_token_template,
+        TP_PROTO(struct mm_struct *swap_token_mm),
+
+        TP_ARGS(swap_token_mm),
+
+        TP_STRUCT__entry(
+                __field(struct mm_struct*, swap_token_mm)
+        ),
+
+        TP_fast_assign(
+                __entry->swap_token_mm = swap_token_mm;
+        ),
+
+        TP_printk("token_mm=%p", __entry->swap_token_mm)
+);
+
+DEFINE_EVENT(put_swap_token_template, put_swap_token,
+        TP_PROTO(struct mm_struct *swap_token_mm),
+        TP_ARGS(swap_token_mm)
+);
+
+DEFINE_EVENT_CONDITION(put_swap_token_template, disable_swap_token,
+        TP_PROTO(struct mm_struct *swap_token_mm),
+        TP_ARGS(swap_token_mm),
+        TP_CONDITION(swap_token_mm != NULL)
+);
+
+TRACE_EVENT_CONDITION(update_swap_token_priority,
+        TP_PROTO(struct mm_struct *mm,
+                 unsigned int old_prio,
+                 struct mm_struct *swap_token_mm),
+
+        TP_ARGS(mm, old_prio, swap_token_mm),
+
+        TP_CONDITION(mm->token_priority != old_prio),
+
+        TP_STRUCT__entry(
+                __field(struct mm_struct*, mm)
+                __field(unsigned int, old_prio)
+                __field(unsigned int, new_prio)
+                __field(struct mm_struct*, swap_token_mm)
+                __field(unsigned int, swap_token_prio)
+        ),
+
+        TP_fast_assign(
+                __entry->mm             = mm;
+                __entry->old_prio       = old_prio;
+                __entry->new_prio       = mm->token_priority;
+                __entry->swap_token_mm  = swap_token_mm;
+                __entry->swap_token_prio = swap_token_mm ? swap_token_mm->token_priority : 0;
+        ),
+
+        TP_printk("mm=%p old_prio=%u new_prio=%u swap_token_mm=%p token_prio=%u",
+                  __entry->mm, __entry->old_prio, __entry->new_prio,
+                  __entry->swap_token_mm, __entry->swap_token_prio)
+);
 
 #endif /* _TRACE_VMSCAN_H */
 
diff --git a/init/Kconfig b/init/Kconfig
index ebafac4231ee..412c21b00d51 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -19,7 +19,6 @@ config DEFCONFIG_LIST
 config CONSTRUCTORS
         bool
         depends on !UML
-        default y
 
 config HAVE_IRQ_WORK
         bool
@@ -204,6 +203,15 @@ config KERNEL_LZO
 
 endchoice
 
+config DEFAULT_HOSTNAME
+        string "Default hostname"
+        default "(none)"
+        help
+          This option determines the default system hostname before userspace
+          calls sethostname(2). The kernel traditionally uses "(none)" here,
+          but you may wish to use a different default here to make a minimal
+          system more usable with less configuration.
+
 config SWAP
         bool "Support for paging of anonymous memory (swap)"
         depends on MMU && BLOCK
diff --git a/init/calibrate.c b/init/calibrate.c
index cfd7000c9d71..2568d22a304e 100644
--- a/init/calibrate.c
+++ b/init/calibrate.c
@@ -93,9 +93,6 @@ static unsigned long __cpuinit calibrate_delay_direct(void)
                  * If the upper limit and lower limit of the timer_rate is
                  * >= 12.5% apart, redo calibration.
                  */
-                printk(KERN_DEBUG "calibrate_delay_direct() timer_rate_max=%lu "
-                            "timer_rate_min=%lu pre_start=%lu pre_end=%lu\n",
-                          timer_rate_max, timer_rate_min, pre_start, pre_end);
                 if (start >= post_end)
                         printk(KERN_NOTICE "calibrate_delay_direct() ignoring "
                                         "timer_rate as we had a TSC wrap around"
diff --git a/kernel/exit.c b/kernel/exit.c
index 20a406471525..f2b321bae440 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -561,29 +561,28 @@ void exit_files(struct task_struct *tsk)
 
 #ifdef CONFIG_MM_OWNER
 /*
- * Task p is exiting and it owned mm, lets find a new owner for it
+ * A task is exiting.   If it owned this mm, find a new owner for the mm.
  */
-static inline int
-mm_need_new_owner(struct mm_struct *mm, struct task_struct *p)
-{
-        /*
-         * If there are other users of the mm and the owner (us) is exiting
-         * we need to find a new owner to take on the responsibility.
-         */
-        if (atomic_read(&mm->mm_users) <= 1)
-                return 0;
-        if (mm->owner != p)
-                return 0;
-        return 1;
-}
-
 void mm_update_next_owner(struct mm_struct *mm)
 {
         struct task_struct *c, *g, *p = current;
 
 retry:
-        if (!mm_need_new_owner(mm, p))
+        /*
+         * If the exiting or execing task is not the owner, it's
+         * someone else's problem.
+         */
+        if (mm->owner != p)
                 return;
+        /*
+         * The current owner is exiting/execing and there are no other
+         * candidates.  Do not leave the mm pointing to a possibly
+         * freed task structure.
+         */
+        if (atomic_read(&mm->mm_users) <= 1) {
+                mm->owner = NULL;
+                return;
+        }
 
         read_lock(&tasklist_lock);
         /*
diff --git a/kernel/gcov/Kconfig b/kernel/gcov/Kconfig
index b8cadf70b1fb..5bf924d80b5c 100644
--- a/kernel/gcov/Kconfig
+++ b/kernel/gcov/Kconfig
@@ -2,7 +2,8 @@ menu "GCOV-based kernel profiling"
 
 config GCOV_KERNEL
         bool "Enable gcov-based kernel profiling"
-        depends on DEBUG_FS && CONSTRUCTORS
+        depends on DEBUG_FS
+        select CONSTRUCTORS
         default n
         ---help---
         This option enables gcov-based code profiling (e.g. for code coverage
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 88725c939e0b..10d018212bab 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -1096,7 +1096,7 @@ static void check_preempt_curr_rt(struct rq *rq, struct task_struct *p, int flag
          * to move current somewhere else, making room for our non-migratable
          * task.
          */
-        if (p->prio == rq->curr->prio && !need_resched())
+        if (p->prio == rq->curr->prio && !test_tsk_need_resched(rq->curr))
                 check_preempt_equal_prio(rq, p);
 #endif
 }
@@ -1239,6 +1239,10 @@ static int find_lowest_rq(struct task_struct *task)
         int this_cpu = smp_processor_id();
         int cpu      = task_cpu(task);
 
+        /* Make sure the mask is initialized first */
+        if (unlikely(!lowest_mask))
+                return -1;
+
         if (task->rt.nr_cpus_allowed == 1)
                 return -1; /* No other targets possible */
 
diff --git a/kernel/signal.c b/kernel/signal.c
index 86c32b884f8e..ff7678603328 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2365,7 +2365,7 @@ int sigprocmask(int how, sigset_t *set, sigset_t *oldset)
 /**
  *  sys_rt_sigprocmask - change the list of currently blocked signals
  *  @how: whether to add, remove, or set signals
- *  @set: stores pending signals
+ *  @nset: stores pending signals
  *  @oset: previous value of signal mask if non-null
  *  @sigsetsize: size of sigset_t type
  */
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 41baf02924e6..3f3b68199d74 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -572,7 +572,7 @@ EXPORT_SYMBOL(bitmap_scnlistprintf);
 
 /**
  * __bitmap_parselist - convert list format ASCII string to bitmap
- * @bp: read nul-terminated user string from this buffer
+ * @buf: read nul-terminated user string from this buffer
  * @buflen: buffer size in bytes.  If string is smaller than this
  *    then it must be terminated with a \0.
  * @is_user: location of buffer, 0 indicates kernel space
diff --git a/mm/compaction.c b/mm/compaction.c
index 021a2960ef9e..6cc604bd5649 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -144,9 +144,20 @@ static void isolate_freepages(struct zone *zone,
         int nr_freepages = cc->nr_freepages;
         struct list_head *freelist = &cc->freepages;
 
+        /*
+         * Initialise the free scanner. The starting point is where we last
+         * scanned from (or the end of the zone if starting). The low point
+         * is the end of the pageblock the migration scanner is using.
+         */
         pfn = cc->free_pfn;
         low_pfn = cc->migrate_pfn + pageblock_nr_pages;
-        high_pfn = low_pfn;
+
+        /*
+         * Take care that if the migration scanner is at the end of the zone
+         * that the free scanner does not accidentally move to the next zone
+         * in the next isolation cycle.
+         */
+        high_pfn = min(low_pfn, pfn);
 
         /*
          * Isolate free pages until enough are available to migrate the
@@ -240,11 +251,18 @@ static bool too_many_isolated(struct zone *zone)
         return isolated > (inactive + active) / 2;
 }
 
+/* possible outcome of isolate_migratepages */
+typedef enum {
+        ISOLATE_ABORT,          /* Abort compaction now */
+        ISOLATE_NONE,           /* No pages isolated, continue scanning */
+        ISOLATE_SUCCESS,        /* Pages isolated, migrate */
+} isolate_migrate_t;
+
 /*
  * Isolate all pages that can be migrated from the block pointed to by
  * the migrate scanner within compact_control.
  */
-static unsigned long isolate_migratepages(struct zone *zone,
+static isolate_migrate_t isolate_migratepages(struct zone *zone,
                                         struct compact_control *cc)
 {
         unsigned long low_pfn, end_pfn;
@@ -261,7 +279,7 @@ static unsigned long isolate_migratepages(struct zone *zone,
         /* Do not cross the free scanner or scan within a memory hole */
         if (end_pfn > cc->free_pfn || !pfn_valid(low_pfn)) {
                 cc->migrate_pfn = end_pfn;
-                return 0;
+                return ISOLATE_NONE;
         }
 
         /*
@@ -270,10 +288,14 @@ static unsigned long isolate_migratepages(struct zone *zone,
          * delay for some time until fewer pages are isolated
          */
         while (unlikely(too_many_isolated(zone))) {
+                /* async migration should just abort */
+                if (!cc->sync)
+                        return ISOLATE_ABORT;
+
                 congestion_wait(BLK_RW_ASYNC, HZ/10);
 
                 if (fatal_signal_pending(current))
-                        return 0;
+                        return ISOLATE_ABORT;
         }
 
         /* Time to isolate some pages for migration */
@@ -358,7 +380,7 @@ static unsigned long isolate_migratepages(struct zone *zone,
 
         trace_mm_compaction_isolate_migratepages(nr_scanned, nr_isolated);
 
-        return cc->nr_migratepages;
+        return ISOLATE_SUCCESS;
 }
 
 /*
@@ -420,13 +442,6 @@ static int compact_finished(struct zone *zone,
         if (cc->free_pfn <= cc->migrate_pfn)
                 return COMPACT_COMPLETE;
 
-        /* Compaction run is not finished if the watermark is not met */
-        watermark = low_wmark_pages(zone);
-        watermark += (1 << cc->order);
-
-        if (!zone_watermark_ok(zone, cc->order, watermark, 0, 0))
-                return COMPACT_CONTINUE;
-
         /*
          * order == -1 is expected when compacting via
          * /proc/sys/vm/compact_memory
@@ -434,6 +449,13 @@ static int compact_finished(struct zone *zone,
         if (cc->order == -1)
                 return COMPACT_CONTINUE;
 
+        /* Compaction run is not finished if the watermark is not met */
+        watermark = low_wmark_pages(zone);
+        watermark += (1 << cc->order);
+
+        if (!zone_watermark_ok(zone, cc->order, watermark, 0, 0))
+                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 */
@@ -461,6 +483,13 @@ unsigned long compaction_suitable(struct zone *zone, int order)
         unsigned long watermark;
 
         /*
+         * order == -1 is expected when compacting via
+         * /proc/sys/vm/compact_memory
+         */
+        if (order == -1)
+                return COMPACT_CONTINUE;
+
+        /*
          * Watermarks for order-0 must be met for compaction. Note the 2UL.
          * This is because during migration, copies of pages need to be
          * allocated and for a short time, the footprint is higher
@@ -470,17 +499,11 @@ unsigned long compaction_suitable(struct zone *zone, int order)
                 return COMPACT_SKIPPED;
 
         /*
-         * order == -1 is expected when compacting via
-         * /proc/sys/vm/compact_memory
-         */
-        if (order == -1)
-                return COMPACT_CONTINUE;
-
-        /*
          * fragmentation index determines if allocation failures are due to
          * low memory or external fragmentation
          *
-         * index of -1 implies allocations might succeed dependingon watermarks
+         * index of -1000 implies allocations might succeed depending on
+         * watermarks
          * index towards 0 implies failure is due to lack of memory
          * index towards 1000 implies failure is due to fragmentation
          *
@@ -490,7 +513,8 @@ unsigned long compaction_suitable(struct zone *zone, int order)
         if (fragindex >= 0 && fragindex <= sysctl_extfrag_threshold)
                 return COMPACT_SKIPPED;
 
-        if (fragindex == -1 && zone_watermark_ok(zone, order, watermark, 0, 0))
+        if (fragindex == -1000 && zone_watermark_ok(zone, order, watermark,
+            0, 0))
                 return COMPACT_PARTIAL;
 
         return COMPACT_CONTINUE;
@@ -522,8 +546,15 @@ static int compact_zone(struct zone *zone, struct compact_control *cc)
                 unsigned long nr_migrate, nr_remaining;
                 int err;
 
-                if (!isolate_migratepages(zone, cc))
+                switch (isolate_migratepages(zone, cc)) {
+                case ISOLATE_ABORT:
+                        ret = COMPACT_PARTIAL;
+                        goto out;
+                case ISOLATE_NONE:
                         continue;
+                case ISOLATE_SUCCESS:
+                        ;
+                }
 
                 nr_migrate = cc->nr_migratepages;
                 err = migrate_pages(&cc->migratepages, compaction_alloc,
@@ -547,6 +578,7 @@ static int compact_zone(struct zone *zone, struct compact_control *cc)
 
         }
 
+out:
         /* Release free pages and check accounting */
         cc->nr_freepages -= release_freepages(&cc->freepages);
         VM_BUG_ON(cc->nr_freepages != 0);
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 615d9743a3cb..81532f297fd2 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2234,11 +2234,8 @@ static void khugepaged_loop(void)
         while (likely(khugepaged_enabled())) {
 #ifndef CONFIG_NUMA
                 hpage = khugepaged_alloc_hugepage();
-                if (unlikely(!hpage)) {
-                        count_vm_event(THP_COLLAPSE_ALLOC_FAILED);
+                if (unlikely(!hpage))
                         break;
-                }
-                count_vm_event(THP_COLLAPSE_ALLOC);
 #else
                 if (IS_ERR(hpage)) {
                         khugepaged_alloc_sleep();
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 6402458fee38..bfcf153bc829 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1111,6 +1111,14 @@ static void __init gather_bootmem_prealloc(void)
                 WARN_ON(page_count(page) != 1);
                 prep_compound_huge_page(page, h->order);
                 prep_new_huge_page(h, page, page_to_nid(page));
+                /*
+                 * If we had gigantic hugepages allocated at boot time, we need
+                 * to restore the 'stolen' pages to totalram_pages in order to
+                 * fix confusing memory reports from free(1) and another
+                 * side-effects, like CommitLimit going negative.
+                 */
+                if (h->order > (MAX_ORDER - 1))
+                        totalram_pages += 1 << h->order;
         }
 }
 
diff --git a/mm/ksm.c b/mm/ksm.c
index d708b3ef2260..9a68b0cf0a1c 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1302,6 +1302,12 @@ static struct rmap_item *scan_get_next_rmap_item(struct page **page)
                 slot = list_entry(slot->mm_list.next, struct mm_slot, mm_list);
                 ksm_scan.mm_slot = slot;
                 spin_unlock(&ksm_mmlist_lock);
+                /*
+                 * Although we tested list_empty() above, a racing __ksm_exit
+                 * of the last mm on the list may have removed it since then.
+                 */
+                if (slot == &ksm_mm_head)
+                        return NULL;
 next_mm:
                 ksm_scan.address = 0;
                 ksm_scan.rmap_list = &slot->rmap_list;
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index bd9052a5d3ad..cf7d027a8844 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -359,7 +359,7 @@ enum charge_type {
 static void mem_cgroup_get(struct mem_cgroup *mem);
 static void mem_cgroup_put(struct mem_cgroup *mem);
 static struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *mem);
-static void drain_all_stock_async(void);
+static void drain_all_stock_async(struct mem_cgroup *mem);
 
 static struct mem_cgroup_per_zone *
 mem_cgroup_zoneinfo(struct mem_cgroup *mem, int nid, int zid)
@@ -735,7 +735,7 @@ struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p)
                                 struct mem_cgroup, css);
 }
 
-static struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm)
+struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm)
 {
         struct mem_cgroup *mem = NULL;
 
@@ -1663,15 +1663,21 @@ static int mem_cgroup_hierarchical_reclaim(struct mem_cgroup *root_mem,
         excess = res_counter_soft_limit_excess(&root_mem->res) >> PAGE_SHIFT;
 
         /* If memsw_is_minimum==1, swap-out is of-no-use. */
-        if (root_mem->memsw_is_minimum)
+        if (!check_soft && root_mem->memsw_is_minimum)
                 noswap = true;
 
         while (1) {
                 victim = mem_cgroup_select_victim(root_mem);
                 if (victim == root_mem) {
                         loop++;
-                        if (loop >= 1)
-                                drain_all_stock_async();
+                        /*
+                         * We are not draining per cpu cached charges during
+                         * soft limit reclaim  because global reclaim doesn't
+                         * care about charges. It tries to free some memory and
+                         * charges will not give any.
+                         */
+                        if (!check_soft && loop >= 1)
+                                drain_all_stock_async(root_mem);
                         if (loop >= 2) {
                                 /*
                                  * If we have not been able to reclaim
@@ -1934,9 +1940,11 @@ struct memcg_stock_pcp {
         struct mem_cgroup *cached; /* this never be root cgroup */
         unsigned int nr_pages;
         struct work_struct work;
+        unsigned long flags;
+#define FLUSHING_CACHED_CHARGE  (0)
 };
 static DEFINE_PER_CPU(struct memcg_stock_pcp, memcg_stock);
-static atomic_t memcg_drain_count;
+static DEFINE_MUTEX(percpu_charge_mutex);
 
 /*
  * Try to consume stocked charge on this cpu. If success, one page is consumed
@@ -1984,6 +1992,7 @@ static void drain_local_stock(struct work_struct *dummy)
 {
         struct memcg_stock_pcp *stock = &__get_cpu_var(memcg_stock);
         drain_stock(stock);
+        clear_bit(FLUSHING_CACHED_CHARGE, &stock->flags);
 }
 
 /*
@@ -2008,26 +2017,45 @@ static void refill_stock(struct mem_cgroup *mem, unsigned int nr_pages)
  * expects some charges will be back to res_counter later but cannot wait for
  * it.
  */
-static void drain_all_stock_async(void)
+static void drain_all_stock_async(struct mem_cgroup *root_mem)
 {
-        int cpu;
-        /* This function is for scheduling "drain" in asynchronous way.
-         * The result of "drain" is not directly handled by callers. Then,
-         * if someone is calling drain, we don't have to call drain more.
-         * Anyway, WORK_STRUCT_PENDING check in queue_work_on() will catch if
-         * there is a race. We just do loose check here.
+        int cpu, curcpu;
+        /*
+         * If someone calls draining, avoid adding more kworker runs.
          */
-        if (atomic_read(&memcg_drain_count))
+        if (!mutex_trylock(&percpu_charge_mutex))
                 return;
         /* Notify other cpus that system-wide "drain" is running */
-        atomic_inc(&memcg_drain_count);
         get_online_cpus();
+        /*
+         * Get a hint for avoiding draining charges on the current cpu,
+         * which must be exhausted by our charging.  It is not required that
+         * this be a precise check, so we use raw_smp_processor_id() instead of
+         * getcpu()/putcpu().
+         */
+        curcpu = raw_smp_processor_id();
         for_each_online_cpu(cpu) {
                 struct memcg_stock_pcp *stock = &per_cpu(memcg_stock, cpu);
-                schedule_work_on(cpu, &stock->work);
+                struct mem_cgroup *mem;
+
+                if (cpu == curcpu)
+                        continue;
+
+                mem = stock->cached;
+                if (!mem)
+                        continue;
+                if (mem != root_mem) {
+                        if (!root_mem->use_hierarchy)
+                                continue;
+                        /* check whether "mem" is under tree of "root_mem" */
+                        if (!css_is_ancestor(&mem->css, &root_mem->css))
+                                continue;
+                }
+                if (!test_and_set_bit(FLUSHING_CACHED_CHARGE, &stock->flags))
+                        schedule_work_on(cpu, &stock->work);
         }
         put_online_cpus();
-        atomic_dec(&memcg_drain_count);
+        mutex_unlock(&percpu_charge_mutex);
         /* We don't wait for flush_work */
 }
 
@@ -2035,9 +2063,9 @@ static void drain_all_stock_async(void)
 static void drain_all_stock_sync(void)
 {
         /* called when force_empty is called */
-        atomic_inc(&memcg_drain_count);
+        mutex_lock(&percpu_charge_mutex);
         schedule_on_each_cpu(drain_local_stock);
-        atomic_dec(&memcg_drain_count);
+        mutex_unlock(&percpu_charge_mutex);
 }
 
 /*
@@ -4640,6 +4668,7 @@ static struct cftype mem_cgroup_files[] = {
         {
                 .name = "numa_stat",
                 .open = mem_control_numa_stat_open,
+                .mode = S_IRUGO,
         },
 #endif
 };
@@ -5414,18 +5443,16 @@ static void mem_cgroup_move_task(struct cgroup_subsys *ss,
                                 struct cgroup *old_cont,
                                 struct task_struct *p)
 {
-        struct mm_struct *mm;
+        struct mm_struct *mm = get_task_mm(p);
 
-        if (!mc.to)
-                /* no need to move charge */
-                return;
-
-        mm = get_task_mm(p);
         if (mm) {
-                mem_cgroup_move_charge(mm);
+                if (mc.to)
+                        mem_cgroup_move_charge(mm);
+                put_swap_token(mm);
                 mmput(mm);
         }
-        mem_cgroup_clear_mc();
+        if (mc.to)
+                mem_cgroup_clear_mc();
 }
 #else   /* !CONFIG_MMU */
 static int mem_cgroup_can_attach(struct cgroup_subsys *ss,
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 5c8f7e08928d..eac0ba561491 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -52,6 +52,7 @@
 #include <linux/swapops.h>
 #include <linux/hugetlb.h>
 #include <linux/memory_hotplug.h>
+#include <linux/mm_inline.h>
 #include "internal.h"
 
 int sysctl_memory_failure_early_kill __read_mostly = 0;
@@ -1468,7 +1469,8 @@ int soft_offline_page(struct page *page, int flags)
         put_page(page);
         if (!ret) {
                 LIST_HEAD(pagelist);
-
+                inc_zone_page_state(page, NR_ISOLATED_ANON +
+                                            page_is_file_cache(page));
                 list_add(&page->lru, &pagelist);
                 ret = migrate_pages(&pagelist, new_page, MPOL_MF_MOVE_ALL,
                                                                 0, true);
diff --git a/mm/memory.c b/mm/memory.c
index 6953d3926e01..87d935333f0d 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1112,11 +1112,13 @@ static unsigned long zap_pte_range(struct mmu_gather *tlb,
         int force_flush = 0;
         int rss[NR_MM_COUNTERS];
         spinlock_t *ptl;
+        pte_t *start_pte;
         pte_t *pte;
 
 again:
         init_rss_vec(rss);
-        pte = pte_offset_map_lock(mm, pmd, addr, &ptl);
+        start_pte = pte_offset_map_lock(mm, pmd, addr, &ptl);
+        pte = start_pte;
         arch_enter_lazy_mmu_mode();
         do {
                 pte_t ptent = *pte;
@@ -1196,7 +1198,7 @@ again:
 
         add_mm_rss_vec(mm, rss);
         arch_leave_lazy_mmu_mode();
-        pte_unmap_unlock(pte - 1, ptl);
+        pte_unmap_unlock(start_pte, ptl);
 
         /*
          * mmu_gather ran out of room to batch pages, we break out of
@@ -1296,7 +1298,7 @@ static unsigned long unmap_page_range(struct mmu_gather *tlb,
 
 /**
  * unmap_vmas - unmap a range of memory covered by a list of vma's
- * @tlbp: address of the caller's struct mmu_gather
+ * @tlb: address of the caller's struct mmu_gather
  * @vma: the starting vma
  * @start_addr: virtual address at which to start unmapping
  * @end_addr: virtual address at which to end unmapping
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 9f646374e32f..02159c755136 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -494,6 +494,12 @@ static pg_data_t __ref *hotadd_new_pgdat(int nid, u64 start)
         /* init node's zones as empty zones, we don't have any present pages.*/
         free_area_init_node(nid, zones_size, start_pfn, zholes_size);
 
+        /*
+         * The node we allocated has no zone fallback lists. For avoiding
+         * to access not-initialized zonelist, build here.
+         */
+        build_all_zonelists(NULL);
+
         return pgdat;
 }
 
diff --git a/mm/mmap.c b/mm/mmap.c
index bbdc9af5e117..d49736ff8a8d 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -906,14 +906,7 @@ struct anon_vma *find_mergeable_anon_vma(struct vm_area_struct *vma)
         if (anon_vma)
                 return anon_vma;
 try_prev:
-        /*
-         * It is potentially slow to have to call find_vma_prev here.
-         * But it's only on the first write fault on the vma, not
-         * every time, and we could devise a way to avoid it later
-         * (e.g. stash info in next's anon_vma_node when assigning
-         * an anon_vma, or when trying vma_merge).  Another time.
-         */
-        BUG_ON(find_vma_prev(vma->vm_mm, vma->vm_start, &near) != vma);
+        near = vma->vm_prev;
         if (!near)
                 goto none;
 
@@ -2044,9 +2037,10 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
                 return -EINVAL;
 
         /* Find the first overlapping VMA */
-        vma = find_vma_prev(mm, start, &prev);
+        vma = find_vma(mm, start);
         if (!vma)
                 return 0;
+        prev = vma->vm_prev;
         /* we have  start < vma->vm_end  */
 
         /* if it doesn't overlap, we have nothing.. */
diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c
index 74ccff61d1be..53bffc6c293e 100644
--- a/mm/page_cgroup.c
+++ b/mm/page_cgroup.c
@@ -162,13 +162,13 @@ static void free_page_cgroup(void *addr)
 }
 #endif
 
-static int __meminit init_section_page_cgroup(unsigned long pfn)
+static int __meminit init_section_page_cgroup(unsigned long pfn, int nid)
 {
         struct page_cgroup *base, *pc;
         struct mem_section *section;
         unsigned long table_size;
         unsigned long nr;
-        int nid, index;
+        int index;
 
         nr = pfn_to_section_nr(pfn);
         section = __nr_to_section(nr);
@@ -176,7 +176,6 @@ static int __meminit init_section_page_cgroup(unsigned long pfn)
         if (section->page_cgroup)
                 return 0;
 
-        nid = page_to_nid(pfn_to_page(pfn));
         table_size = sizeof(struct page_cgroup) * PAGES_PER_SECTION;
         base = alloc_page_cgroup(table_size, nid);
 
@@ -196,7 +195,11 @@ static int __meminit init_section_page_cgroup(unsigned long pfn)
                 pc = base + index;
                 init_page_cgroup(pc, nr);
         }
-
+        /*
+         * The passed "pfn" may not be aligned to SECTION.  For the calculation
+         * we need to apply a mask.
+         */
+        pfn &= PAGE_SECTION_MASK;
         section->page_cgroup = base - pfn;
         total_usage += table_size;
         return 0;
@@ -225,10 +228,20 @@ int __meminit online_page_cgroup(unsigned long start_pfn,
         start = start_pfn & ~(PAGES_PER_SECTION - 1);
         end = ALIGN(start_pfn + nr_pages, PAGES_PER_SECTION);
 
+        if (nid == -1) {
+                /*
+                 * In this case, "nid" already exists and contains valid memory.
+                 * "start_pfn" passed to us is a pfn which is an arg for
+                 * online__pages(), and start_pfn should exist.
+                 */
+                nid = pfn_to_nid(start_pfn);
+                VM_BUG_ON(!node_state(nid, N_ONLINE));
+        }
+
         for (pfn = start; !fail && pfn < end; pfn += PAGES_PER_SECTION) {
                 if (!pfn_present(pfn))
                         continue;
-                fail = init_section_page_cgroup(pfn);
+                fail = init_section_page_cgroup(pfn, nid);
         }
         if (!fail)
                 return 0;
@@ -284,25 +297,47 @@ static int __meminit page_cgroup_callback(struct notifier_block *self,
 void __init page_cgroup_init(void)
 {
         unsigned long pfn;
-        int fail = 0;
+        int nid;
 
         if (mem_cgroup_disabled())
                 return;
 
-        for (pfn = 0; !fail && pfn < max_pfn; pfn += PAGES_PER_SECTION) {
-                if (!pfn_present(pfn))
-                        continue;
-                fail = init_section_page_cgroup(pfn);
-        }
-        if (fail) {
-                printk(KERN_CRIT "try 'cgroup_disable=memory' boot option\n");
-                panic("Out of memory");
-        } else {
-                hotplug_memory_notifier(page_cgroup_callback, 0);
+        for_each_node_state(nid, N_HIGH_MEMORY) {
+                unsigned long start_pfn, end_pfn;
+
+                start_pfn = node_start_pfn(nid);
+                end_pfn = node_end_pfn(nid);
+                /*
+                 * start_pfn and end_pfn may not be aligned to SECTION and the
+                 * page->flags of out of node pages are not initialized.  So we
+                 * scan [start_pfn, the biggest section's pfn < end_pfn) here.
+                 */
+                for (pfn = start_pfn;
+                     pfn < end_pfn;
+                     pfn = ALIGN(pfn + 1, PAGES_PER_SECTION)) {
+
+                        if (!pfn_valid(pfn))
+                                continue;
+                        /*
+                         * Nodes's pfns can be overlapping.
+                         * We know some arch can have a nodes layout such as
+                         * -------------pfn-------------->
+                         * N0 | N1 | N2 | N0 | N1 | N2|....
+                         */
+                        if (pfn_to_nid(pfn) != nid)
+                                continue;
+                        if (init_section_page_cgroup(pfn, nid))
+                                goto oom;
+                }
         }
+        hotplug_memory_notifier(page_cgroup_callback, 0);
         printk(KERN_INFO "allocated %ld bytes of page_cgroup\n", total_usage);
-        printk(KERN_INFO "please try 'cgroup_disable=memory' option if you don't"
-        " want memory cgroups\n");
+        printk(KERN_INFO "please try 'cgroup_disable=memory' option if you "
+                         "don't want memory cgroups\n");
+        return;
+oom:
+        printk(KERN_CRIT "try 'cgroup_disable=memory' boot option\n");
+        panic("Out of memory");
 }
 
 void __meminit pgdat_page_cgroup_init(struct pglist_data *pgdat)
diff --git a/mm/thrash.c b/mm/thrash.c
index 2372d4ed5dd8..fabf2d0f5169 100644
--- a/mm/thrash.c
+++ b/mm/thrash.c
@@ -21,14 +21,40 @@
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/swap.h>
+#include <linux/memcontrol.h>
+
+#include <trace/events/vmscan.h>
+
+#define TOKEN_AGING_INTERVAL    (0xFF)
 
 static DEFINE_SPINLOCK(swap_token_lock);
 struct mm_struct *swap_token_mm;
+struct mem_cgroup *swap_token_memcg;
 static unsigned int global_faults;
+static unsigned int last_aging;
+
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
+static struct mem_cgroup *swap_token_memcg_from_mm(struct mm_struct *mm)
+{
+        struct mem_cgroup *memcg;
+
+        memcg = try_get_mem_cgroup_from_mm(mm);
+        if (memcg)
+                css_put(mem_cgroup_css(memcg));
+
+        return memcg;
+}
+#else
+static struct mem_cgroup *swap_token_memcg_from_mm(struct mm_struct *mm)
+{
+        return NULL;
+}
+#endif
 
 void grab_swap_token(struct mm_struct *mm)
 {
         int current_interval;
+        unsigned int old_prio = mm->token_priority;
 
         global_faults++;
 
@@ -38,40 +64,81 @@ void grab_swap_token(struct mm_struct *mm)
                 return;
 
         /* First come first served */
-        if (swap_token_mm == NULL) {
-                mm->token_priority = mm->token_priority + 2;
-                swap_token_mm = mm;
-                goto out;
+        if (!swap_token_mm)
+                goto replace_token;
+
+        if ((global_faults - last_aging) > TOKEN_AGING_INTERVAL) {
+                swap_token_mm->token_priority /= 2;
+                last_aging = global_faults;
         }
 
-        if (mm != swap_token_mm) {
-                if (current_interval < mm->last_interval)
-                        mm->token_priority++;
-                else {
-                        if (likely(mm->token_priority > 0))
-                                mm->token_priority--;
-                }
-                /* Check if we deserve the token */
-                if (mm->token_priority > swap_token_mm->token_priority) {
-                        mm->token_priority += 2;
-                        swap_token_mm = mm;
-                }
-        } else {
-                /* Token holder came in again! */
+        if (mm == swap_token_mm) {
                 mm->token_priority += 2;
+                goto update_priority;
+        }
+
+        if (current_interval < mm->last_interval)
+                mm->token_priority++;
+        else {
+                if (likely(mm->token_priority > 0))
+                        mm->token_priority--;
         }
 
+        /* Check if we deserve the token */
+        if (mm->token_priority > swap_token_mm->token_priority)
+                goto replace_token;
+
+update_priority:
+        trace_update_swap_token_priority(mm, old_prio, swap_token_mm);
+
 out:
         mm->faultstamp = global_faults;
         mm->last_interval = current_interval;
         spin_unlock(&swap_token_lock);
+        return;
+
+replace_token:
+        mm->token_priority += 2;
+        trace_replace_swap_token(swap_token_mm, mm);
+        swap_token_mm = mm;
+        swap_token_memcg = swap_token_memcg_from_mm(mm);
+        last_aging = global_faults;
+        goto out;
 }
 
 /* Called on process exit. */
 void __put_swap_token(struct mm_struct *mm)
 {
         spin_lock(&swap_token_lock);
-        if (likely(mm == swap_token_mm))
+        if (likely(mm == swap_token_mm)) {
+                trace_put_swap_token(swap_token_mm);
                 swap_token_mm = NULL;
+                swap_token_memcg = NULL;
+        }
         spin_unlock(&swap_token_lock);
 }
+
+static bool match_memcg(struct mem_cgroup *a, struct mem_cgroup *b)
+{
+        if (!a)
+                return true;
+        if (!b)
+                return true;
+        if (a == b)
+                return true;
+        return false;
+}
+
+void disable_swap_token(struct mem_cgroup *memcg)
+{
+        /* memcg reclaim don't disable unrelated mm token. */
+        if (match_memcg(memcg, swap_token_memcg)) {
+                spin_lock(&swap_token_lock);
+                if (match_memcg(memcg, swap_token_memcg)) {
+                        trace_disable_swap_token(swap_token_mm);
+                        swap_token_mm = NULL;
+                        swap_token_memcg = NULL;
+                }
+                spin_unlock(&swap_token_lock);
+        }
+}
diff --git a/mm/vmscan.c b/mm/vmscan.c
index faa0a088f9cc..8ff834e19c24 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1124,8 +1124,20 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan,
                                         nr_lumpy_dirty++;
                                 scan++;
                         } else {
-                                /* the page is freed already. */
-                                if (!page_count(cursor_page))
+                                /*
+                                 * Check if the page is freed already.
+                                 *
+                                 * We can't use page_count() as that
+                                 * requires compound_head and we don't
+                                 * have a pin on the page here. If a
+                                 * page is tail, we may or may not
+                                 * have isolated the head, so assume
+                                 * it's not free, it'd be tricky to
+                                 * track the head status without a
+                                 * page pin.
+                                 */
+                                if (!PageTail(cursor_page) &&
+                                    !atomic_read(&cursor_page->_count))
                                         continue;
                                 break;
                         }
@@ -2081,7 +2093,7 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
         for (priority = DEF_PRIORITY; priority >= 0; priority--) {
                 sc->nr_scanned = 0;
                 if (!priority)
-                        disable_swap_token();
+                        disable_swap_token(sc->mem_cgroup);
                 total_scanned += shrink_zones(priority, zonelist, sc);
                 /*
                  * Don't shrink slabs when reclaiming memory from
@@ -2407,7 +2419,7 @@ loop_again:
 
                 /* The swap token gets in the way of swapout... */
                 if (!priority)
-                        disable_swap_token();
+                        disable_swap_token(NULL);
 
                 all_zones_ok = 1;
                 balanced = 0;
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 8657f99bfb2b..b0aa2c680593 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1943,6 +1943,11 @@ sub process {
                         WARN("LINUX_VERSION_CODE should be avoided, code should be for the version to which it is merged\n" . $herecurr);
                 }
 
+# check for uses of printk_ratelimit
+                if ($line =~ /\bprintk_ratelimit\s*\(/) {
+                        WARN("Prefer printk_ratelimited or pr_<level>_ratelimited to printk_ratelimit\n" . $herecurr);
+                }
+
 # printk should use KERN_* levels.  Note that follow on printk's on the
 # same line do not need a level, so we use the current block context
 # to try and find and validate the current printk.  In summary the current
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 77d44138864f..35459340019e 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -29,6 +29,7 @@
 #include <linux/audit.h>
 #include <linux/uaccess.h>
 #include <linux/kobject.h>
+#include <linux/ctype.h>
 
 /* selinuxfs pseudo filesystem for exporting the security policy API.
    Based on the proc code and the fs/nfsd/nfsctl.c code. */
@@ -751,6 +752,14 @@ out:
         return length;
 }
 
+static inline int hexcode_to_int(int code) {
+        if (code == '\0' || !isxdigit(code))
+                return -1;
+        if (isdigit(code))
+                return code - '0';
+        return tolower(code) - 'a' + 10;
+}
+
 static ssize_t sel_write_create(struct file *file, char *buf, size_t size)
 {
         char *scon = NULL, *tcon = NULL;
@@ -785,8 +794,34 @@ static ssize_t sel_write_create(struct file *file, char *buf, size_t size)
         nargs = sscanf(buf, "%s %s %hu %s", scon, tcon, &tclass, namebuf);
         if (nargs < 3 || nargs > 4)
                 goto out;
-        if (nargs == 4)
+        if (nargs == 4) {
+                /*
+                 * If and when the name of new object to be queried contains
+                 * either whitespace or multibyte characters, they shall be
+                 * encoded based on the percentage-encoding rule.
+                 * If not encoded, the sscanf logic picks up only left-half
+                 * of the supplied name; splitted by a whitespace unexpectedly.
+                 */
+                char   *r, *w;
+                int     c1, c2;
+
+                r = w = namebuf;
+                do {
+                        c1 = *r++;
+                        if (c1 == '+')
+                                c1 = ' ';
+                        else if (c1 == '%') {
+                                if ((c1 = hexcode_to_int(*r++)) < 0)
+                                        goto out;
+                                if ((c2 = hexcode_to_int(*r++)) < 0)
+                                        goto out;
+                                c1 = (c1 << 4) | c2;
+                        }
+                        *w++ = c1;
+                } while (c1 != '\0');
+
                 objname = namebuf;
+        }
 
         length = security_context_to_sid(scon, strlen(scon) + 1, &ssid);
         if (length)
diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index 102e9ec1b77a..d246aca3f4fb 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -3222,6 +3222,9 @@ static int filename_trans_write(struct policydb *p, void *fp)
         __le32 buf[1];
         int rc;
 
+        if (p->policyvers < POLICYDB_VERSION_FILENAME_TRANS)
+                return 0;
+
         nel = 0;
         rc = hashtab_map(p->filename_trans, hashtab_cnt, &nel);
         if (rc)
diff --git a/security/tomoyo/mount.c b/security/tomoyo/mount.c
index 162a864dba24..9fc2e15841c9 100644
--- a/security/tomoyo/mount.c
+++ b/security/tomoyo/mount.c
@@ -138,7 +138,7 @@ static int tomoyo_mount_acl(struct tomoyo_request_info *r, char *dev_name,
         }
         if (need_dev) {
                 /* Get mount point or device file. */
-                if (kern_path(dev_name, LOOKUP_FOLLOW, &path)) {
+                if (!dev_name || kern_path(dev_name, LOOKUP_FOLLOW, &path)) {
                         error = -ENOENT;
                         goto out;
                 }