GitHub/exynos8895/android_kernel_samsung_universal8895.git
13 years agoMerge remote branch 'intel/drm-intel-next' of ../drm-next into drm-core-next
Dave Airlie [Mon, 14 Mar 2011 04:15:13 +0000 (14:15 +1000)]
Merge remote branch 'intel/drm-intel-next' of ../drm-next into drm-core-next

* 'intel/drm-intel-next' of ../drm-next: (755 commits)
  drm/i915: Only wait on a pending flip if we intend to write to the buffer
  drm/i915/dp: Sanity check eDP existence
  drm/i915: Rebind the buffer if its alignment constraints changes with tiling
  drm/i915: Disable GPU semaphores by default
  drm/i915: Do not overflow the MMADDR write FIFO
  Revert "drm/i915: fix corruptions on i8xx due to relaxed fencing"
  drm/i915: Don't save/restore hardware status page address register
  drm/i915: don't store the reg value for HWS_PGA
  drm/i915: fix memory corruption with GM965 and >4GB RAM
  Linux 2.6.38-rc7
  Revert "TPM: Long default timeout fix"
  drm/i915: Re-enable GPU semaphores for SandyBridge mobile
  drm/i915: Replace vblank PM QoS with "Interrupt-Based AGPBUSY#"
  Revert "drm/i915: Use PM QoS to prevent C-State starvation of gen3 GPU"
  drm/i915: Allow relocation deltas outside of target bo
  drm/i915: Silence an innocuous compiler warning for an unused variable
  fs/block_dev.c: fix new kernel-doc warning
  ACPI: Fix build for CONFIG_NET unset
  mm: <asm-generic/pgtable.h> must include <linux/mm_types.h>
  x86: Use u32 instead of long to set reset vector back to 0
  ...

Conflicts:
drivers/gpu/drm/i915/i915_gem.c

13 years agoMerge branch 'drm-intel-fixes' into drm-intel-next
Chris Wilson [Mon, 7 Mar 2011 12:32:44 +0000 (12:32 +0000)]
Merge branch 'drm-intel-fixes' into drm-intel-next

Apply the trivial conflicting regression fixes, but keep GPU semaphores
enabled.

Conflicts:
drivers/gpu/drm/i915/i915_drv.h
drivers/gpu/drm/i915/i915_gem_execbuffer.c

13 years agodrm/i915: Only wait on a pending flip if we intend to write to the buffer
Chris Wilson [Sun, 6 Mar 2011 13:51:29 +0000 (13:51 +0000)]
drm/i915: Only wait on a pending flip if we intend to write to the buffer

... as if we are only reading from it, we can do that concurrently with
the queue flip.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
13 years agodrm/i915/dp: Sanity check eDP existence
Chris Wilson [Sat, 12 Feb 2011 10:33:12 +0000 (10:33 +0000)]
drm/i915/dp: Sanity check eDP existence

Some hardware claims to have both an LVDS panel and an eDP output.
Whilst this may be true in a rare case, more often it is just broken
hardware. If we see an eDP device we know that it must be connected and
so we can confirm its existence with a simple probe.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=34165
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=24822
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
13 years agodrm/i915: Rebind the buffer if its alignment constraints changes with tiling
Chris Wilson [Mon, 7 Mar 2011 10:42:03 +0000 (10:42 +0000)]
drm/i915: Rebind the buffer if its alignment constraints changes with tiling

Early gen3 and gen2 chipset do not have the relaxed per-surface tiling
constraints of the later chipsets, so we need to check that the GTT
alignment is correct for the new tiling. If it is not, we need to
rebind.

Reported-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
13 years agodrm/i915: Disable GPU semaphores by default
Chris Wilson [Fri, 4 Mar 2011 18:48:03 +0000 (18:48 +0000)]
drm/i915: Disable GPU semaphores by default

Andi Kleen narrowed his GPU hangs on his Sugar Bay (SNB desktop) rev 09
down to the use of GPU semaphores, and we already know that they appear
broken up to Huron River (mobile) rev 08. (I'm optimistic that disabling
GPU semaphores is simply hiding another bug by the latency and
side-effects of the additional device interaction it introduces...)

However, use of semaphores is a massive performance improvement... Only
as long as the system remains stable. Enable at your peril.

Reported-by: Andi Kleen <andi-fd@firstfloor.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=33921
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
13 years agodrm/i915: Do not overflow the MMADDR write FIFO
Chris Wilson [Fri, 4 Mar 2011 19:22:40 +0000 (19:22 +0000)]
drm/i915: Do not overflow the MMADDR write FIFO

Whilst the GT is powered down (rc6), writes to MMADDR are placed in a
FIFO by the System Agent. This is a limited resource, only 64 entries, of
which 20 are reserved for Display and PCH writes, and so we must take
care not to queue up too many writes. To avoid this, there is counter
which we can poll to ensure there are sufficient free entries in the
fifo.

"Issuing a write to a full FIFO is not supported; at worst it could
result in corruption or a system hang."

Reported-and-Tested-by: Matt Turner <mattst88@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=34056
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
13 years agoRevert "drm/i915: fix corruptions on i8xx due to relaxed fencing"
Chris Wilson [Sun, 6 Mar 2011 09:03:16 +0000 (09:03 +0000)]
Revert "drm/i915: fix corruptions on i8xx due to relaxed fencing"

This reverts commit c2e0eb167070a6e9dcb49c84c13c79a30d672431.

As it turns out, userspace already depends upon being able to enable
tiling on existing bo which it promises to be large enough for its
purposes i.e. it will not access beyond the end of the last full-tile
row.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=35016
Reported-and-tested-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
13 years agodrm: add cap bit to denote if dumb ioctl is available or not.
Dave Airlie [Fri, 4 Mar 2011 04:50:28 +0000 (14:50 +1000)]
drm: add cap bit to denote if dumb ioctl is available or not.

This allows libkms to make an easier decision.

Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/core: add ioctl to query device/driver capabilities
Ben Skeggs [Mon, 21 Feb 2011 01:17:35 +0000 (11:17 +1000)]
drm/core: add ioctl to query device/driver capabilities

We're coming to see a need to have a set of generic capability checks in
the core DRM, in addition to the driver-specific ioctls that already
exist.

This patch defines an ioctl to do as such, but does not yet define any
capabilities.

[airlied: drop the driver callback for now.]

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms: allow max clock of 340 Mhz on hdmi 1.3+
Alex Deucher [Wed, 2 Mar 2011 15:21:05 +0000 (10:21 -0500)]
drm/radeon/kms: allow max clock of 340 Mhz on hdmi 1.3+

hdmi 1.3 raises the max clock from 165 Mhz to 340 Mhz.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agoMerge remote branch 'korg/drm-radeon-cayman' into drm-core-next
Dave Airlie [Thu, 3 Mar 2011 02:00:52 +0000 (12:00 +1000)]
Merge remote branch 'korg/drm-radeon-cayman' into drm-core-next

* korg/drm-radeon-cayman:
  drm/radeon/kms: add cayman pci ids
  drm/radeon/kms: cayman/evergreen cs checker updates
  drm/radeon/kms/cayman: always set certain VGT regs at CP init
  drm/radeon/kms: additional default context regs for cayman
  drm/radeon/kms: add cayman CS check support
  drm/radeon/kms: add radeon_asic entry for cayman
  drm/radeon/kms: add cayman safe regs
  drm/radeon/kms/cayman: add asic init/startup/fini/suspend/resume functions
  drm/radeon/kms: add cayman asic reset support
  drm/radeon/kms: add support for cayman irqs
  drm/radeon/kms: add support for CP setup on cayman asics
  drm/radeon/kms: add support for cayman gart setup
  drm/radeon/kms: add gpu_init function for cayman
  drm/radeon/kms: add ucode loader for cayman
  drm/radeon/kms: add cayman chip family

13 years agodrm/radeon/kms: add cayman pci ids
Alex Deucher [Thu, 3 Mar 2011 01:07:41 +0000 (20:07 -0500)]
drm/radeon/kms: add cayman pci ids

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms: cayman/evergreen cs checker updates
Alex Deucher [Thu, 3 Mar 2011 01:07:40 +0000 (20:07 -0500)]
drm/radeon/kms: cayman/evergreen cs checker updates

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms/cayman: always set certain VGT regs at CP init
Alex Deucher [Thu, 3 Mar 2011 01:07:39 +0000 (20:07 -0500)]
drm/radeon/kms/cayman: always set certain VGT regs at CP init

These should be handled by the clear_state setup, but set them
directly as well just to be sure.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms: additional default context regs for cayman
Alex Deucher [Thu, 3 Mar 2011 01:07:38 +0000 (20:07 -0500)]
drm/radeon/kms: additional default context regs for cayman

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms: add cayman CS check support
Alex Deucher [Thu, 3 Mar 2011 01:07:37 +0000 (20:07 -0500)]
drm/radeon/kms: add cayman CS check support

Added to existing evergreen CS checker.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms: add radeon_asic entry for cayman
Alex Deucher [Thu, 3 Mar 2011 01:07:36 +0000 (20:07 -0500)]
drm/radeon/kms: add radeon_asic entry for cayman

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms: add cayman safe regs
Alex Deucher [Thu, 3 Mar 2011 01:07:35 +0000 (20:07 -0500)]
drm/radeon/kms: add cayman safe regs

For the CS checker.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms/cayman: add asic init/startup/fini/suspend/resume functions
Alex Deucher [Thu, 3 Mar 2011 01:07:34 +0000 (20:07 -0500)]
drm/radeon/kms/cayman: add asic init/startup/fini/suspend/resume functions

Cayman is different enough from evergreen to warrant it's own functions.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms: add cayman asic reset support
Alex Deucher [Thu, 3 Mar 2011 01:07:33 +0000 (20:07 -0500)]
drm/radeon/kms: add cayman asic reset support

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms: add support for cayman irqs
Alex Deucher [Thu, 3 Mar 2011 01:07:32 +0000 (20:07 -0500)]
drm/radeon/kms: add support for cayman irqs

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms: add support for CP setup on cayman asics
Alex Deucher [Thu, 3 Mar 2011 01:07:31 +0000 (20:07 -0500)]
drm/radeon/kms: add support for CP setup on cayman asics

Cayman asics have 3 ring buffers:
ring 0 supports both gfx and compute
rings 1 and 2 are compute only

At the moment we only support ring 0.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms: add support for cayman gart setup
Alex Deucher [Thu, 3 Mar 2011 01:07:30 +0000 (20:07 -0500)]
drm/radeon/kms: add support for cayman gart setup

This patch sets up the gart in legacy mode.  We
probably want to switch to full VM mode at some point.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms: add gpu_init function for cayman
Alex Deucher [Thu, 3 Mar 2011 01:07:29 +0000 (20:07 -0500)]
drm/radeon/kms: add gpu_init function for cayman

This may some work to get accel going.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms: add ucode loader for cayman
Alex Deucher [Thu, 3 Mar 2011 01:07:28 +0000 (20:07 -0500)]
drm/radeon/kms: add ucode loader for cayman

The MC ucode is no longer loaded by the vbios
tables as on previous asics.  It now must be loaded
by the driver.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/kms: add cayman chip family
Alex Deucher [Thu, 3 Mar 2011 01:07:27 +0000 (20:07 -0500)]
drm/radeon/kms: add cayman chip family

Cayman is DCE5 display plus a new 4-way shader block.
3D state programming is similar to evergreen.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/i915: Don't save/restore hardware status page address register
Zhenyu Wang [Wed, 2 Mar 2011 05:52:37 +0000 (13:52 +0800)]
drm/i915: Don't save/restore hardware status page address register

It's cleaned before saving and re-initialized after restoring.
So don't need to save/restore it. And also new chip has new address
for hardware status page register, don't write to old address.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
13 years agodrm/i915: don't store the reg value for HWS_PGA
Chris Wilson [Fri, 25 Feb 2011 22:26:23 +0000 (22:26 +0000)]
drm/i915: don't store the reg value for HWS_PGA

It is trivially computable from the real physical address so no need to
store both.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
13 years agoMerge branch 'drm-intel-fixes' into drm-intel-next
Chris Wilson [Tue, 1 Mar 2011 23:20:20 +0000 (23:20 +0000)]
Merge branch 'drm-intel-fixes' into drm-intel-next

13 years agodrm/i915: fix memory corruption with GM965 and >4GB RAM
Jan Niehusmann [Tue, 1 Mar 2011 22:24:16 +0000 (23:24 +0100)]
drm/i915: fix memory corruption with GM965 and >4GB RAM

On a Thinkpad x61s, I noticed some memory corruption when
plugging/unplugging the external VGA connection. The symptoms are that
4 bytes at the beginning of a page get overwritten by zeroes.
The address of the corruption varies when rebooting the machine, but
stays constant while it's running (so it's possible to repeatedly write
some data and then corrupt it again by plugging the cable).

Further investigation revealed that the corrupted address is
(dev_priv->status_page_dmah->busaddr & 0xffffffff), ie. the beginning of
the hardware status page of the i965 graphics card, cut to 32 bits.

So it seems that for some memory access, the hardware uses only 32 bit
addressing. If the hardware status page is located >4GB, this
corrupts unrelated memory.

Signed-off-by: Jan Niehusmann <jan@gondor.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
13 years agoLinux 2.6.38-rc7
Linus Torvalds [Tue, 1 Mar 2011 21:55:12 +0000 (13:55 -0800)]
Linux 2.6.38-rc7

13 years agoRevert "TPM: Long default timeout fix"
Linus Torvalds [Tue, 1 Mar 2011 21:23:27 +0000 (13:23 -0800)]
Revert "TPM: Long default timeout fix"

This reverts commit c4ff4b829ef9e6353c0b133b7adb564a68054979.

Ted Ts'o reports:

 "TPM is working for me so I can log into employer's network in 2.6.37.
  It broke when I tried 2.6.38-rc6, with the following relevant lines
  from my dmesg:

  [   11.081627] tpm_tis 00:0b: 1.2 TPM (device-id 0x0, rev-id 78)
  [   25.734114] tpm_tis 00:0b: Operation Timed out
  [   78.040949] tpm_tis 00:0b: Operation Timed out

  This caused me to get suspicious, especially since the _other_ TPM
  commit in 2.6.38 had already been reverted, so I tried reverting
  commit c4ff4b829e: "TPM: Long default timeout fix".  With this commit
  reverted, my TPM on my Lenovo T410 is once again working."

Requested-and-tested-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Rajiv Andrade <srajiv@linux.vnet.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrm/i915: Re-enable GPU semaphores for SandyBridge mobile
Chris Wilson [Tue, 1 Mar 2011 19:22:52 +0000 (19:22 +0000)]
drm/i915: Re-enable GPU semaphores for SandyBridge mobile

This seems to be running stably on my test laptop, so hopefully the
reported hangs where just symptoms of other bugs.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
13 years agodrm/i915: Replace vblank PM QoS with "Interrupt-Based AGPBUSY#"
Chris Wilson [Sat, 5 Feb 2011 10:08:21 +0000 (10:08 +0000)]
drm/i915: Replace vblank PM QoS with "Interrupt-Based AGPBUSY#"

I stumbled over this magic bit in the gen3 INSTPM:

Bit11 Interrupt-Based AGPBUSY# Enable:

‘0’ = Pending GMCH interrupts will not cause AGPBUSY# assertion.
‘1’ = Pending GMCH interrupts will cause AGPBUSY# assertion and hence
      can cause the CPU to exit C3.  There is no suppression of cacheable
      writes.

Note that in either case in C3 the interrupts are not lost. They will be
forwarded to the ICH when the GMCH is out of C3.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@kernel.org
13 years agoRevert "drm/i915: Use PM QoS to prevent C-State starvation of gen3 GPU"
Chris Wilson [Sat, 5 Feb 2011 10:15:37 +0000 (10:15 +0000)]
Revert "drm/i915: Use PM QoS to prevent C-State starvation of gen3 GPU"

Using PM latency request turns out to be very fragile and only works for
some systems, depending upon the ACPI implementation. However, I've
stumbled across a promising bit in INSTPM: "Interrupt-Based AGPBUSY#".

This reverts commit b0b544cd37c060e261afb2cf486296983fcb56da.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
13 years agodrm/i915: Allow relocation deltas outside of target bo
Chris Wilson [Tue, 1 Mar 2011 15:24:41 +0000 (15:24 +0000)]
drm/i915: Allow relocation deltas outside of target bo

Userspace has a legitimate requirement to use a delta that points to
outside of the target bo, and so we need to enable this. (As this is an
abi break, albeit a relaxation of the current restrictions, mark the change
with a new flag.)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
13 years agodrm/i915: Silence an innocuous compiler warning for an unused variable
Chris Wilson [Tue, 1 Mar 2011 15:28:47 +0000 (15:28 +0000)]
drm/i915: Silence an innocuous compiler warning for an unused variable

drivers/gpu/drm/i915/i915_irq.c: In function ‘ironlake_irq_postinstall’:
drivers/gpu/drm/i915/i915_irq.c:1618: warning: unused variable ‘pipe’

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
13 years agodrm/radeon: add new getparam for number of backends.
Dave Airlie [Tue, 1 Mar 2011 04:32:27 +0000 (14:32 +1000)]
drm/radeon: add new getparam for number of backends.

This allows userspace to work out how many DBs there are
for conditional rendering to work.

Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon: fix up dereferencing of busy objects.
Dave Airlie [Tue, 1 Mar 2011 03:40:06 +0000 (13:40 +1000)]
drm/radeon: fix up dereferencing of busy objects.

This could free things twice, just deref the GEM object
and hope its enough.

Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon: bump version to 2.9
Dave Airlie [Tue, 1 Mar 2011 02:10:43 +0000 (12:10 +1000)]
drm/radeon: bump version to 2.9

This lets r600g enable texture formats and some more extensions.

Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/r600: parse the set predication command. (v2)
Dave Airlie [Mon, 28 Feb 2011 06:11:48 +0000 (16:11 +1000)]
drm/r600: parse the set predication command. (v2)

This is required for NV_conditional_render and EXT_transform_feedback.

v2: add evergreen support.

Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agoMerge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groec...
Linus Torvalds [Tue, 1 Mar 2011 02:09:02 +0000 (18:09 -0800)]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging:
  hwmon: (adt7411) add MODULE_DEVICE_TABLE
  hwmon: (ad7414) add MODULE_DEVICE_TABLE

13 years agofs/block_dev.c: fix new kernel-doc warning
Randy Dunlap [Sat, 26 Feb 2011 18:54:00 +0000 (10:54 -0800)]
fs/block_dev.c: fix new kernel-doc warning

Fix new kernel-doc warning in fs/block_dev.c:

Warning(fs/block_dev.c:937): No description found for parameter 'kill_dirty'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoACPI: Fix build for CONFIG_NET unset
Rafael J. Wysocki [Tue, 1 Mar 2011 00:12:19 +0000 (01:12 +0100)]
ACPI: Fix build for CONFIG_NET unset

Several ACPI drivers fail to build if CONFIG_NET is unset, because
they refer to things depending on CONFIG_THERMAL that in turn depends
on CONFIG_NET.  However, CONFIG_THERMAL doesn't really need to depend
on CONFIG_NET, because the only part of it requiring CONFIG_NET is
the netlink interface in thermal_sys.c.

Put the netlink interface in thermal_sys.c under #ifdef CONFIG_NET
and remove the dependency of CONFIG_THERMAL on CONFIG_NET from
drivers/thermal/Kconfig.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Len Brown <lenb@kernel.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Luming Yu <luming.yu@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Tue, 1 Mar 2011 01:58:09 +0000 (17:58 -0800)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm: fix unsigned vs signed comparison issue in modeset ctl ioctl.
  drm/nv50-nvc0: make sure vma is definitely unmapped when destroying bo

13 years agoMerge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Tue, 1 Mar 2011 01:57:30 +0000 (17:57 -0800)]
Merge branch 'omap-fixes-for-linus' of git://git./linux/kernel/git/tmlind/linux-omap-2.6

* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  omap4: prcm: Fix the CPUx clockdomain offsets
  OMAP2+: clocksource: fix crash on boot when !CONFIG_OMAP_32K_TIMER
  OMAP2/3: clock: fix fint calculation for DPLL_FREQSEL
  OMAP2+: mailbox: fix lookups for multiple mailboxes
  OMAP2420: mailbox: fix IVA vs DSP IRQ numbering
  mach-omap2: smartreflex: world-writable debugfs voltage files
  mach-omap2: pm: world-writable debugfs timer files
  mach-omap2: mux: world-writable debugfs files

13 years agoMerge branches 'perf-fixes-for-linus', 'x86-fixes-for-linus' and 'timers-fixes-for...
Linus Torvalds [Tue, 1 Mar 2011 01:55:08 +0000 (17:55 -0800)]
Merge branches 'perf-fixes-for-linus', 'x86-fixes-for-linus' and 'timers-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf timechart: Fix max number of cpus
  perf timechart: Fix black idle boxes in the title
  perf hists: Print number of samples, not the period sum

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Use u32 instead of long to set reset vector back to 0

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  clockevents: Prevent oneshot mode when broadcast device is periodic

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi...
Linus Torvalds [Tue, 1 Mar 2011 01:53:04 +0000 (17:53 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mszeredi/fuse

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: fix truncate after open
  fuse: fix hang of single threaded fuseblk filesystem

13 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec...
Linus Torvalds [Tue, 1 Mar 2011 01:52:47 +0000 (17:52 -0800)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jlbec/ocfs2

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
  ocfs2: Check heartbeat mode for kernel stacks only
  Ocfs2/refcounttree: Fix a bug for refcounttree to writeback clusters in a right number.
  ocfs2: Fix estimate of necessary credits for mkdir

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Tue, 1 Mar 2011 01:47:09 +0000 (17:47 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  eukrea-tlv320: fix platform_name
  ASoC: correct pxa AC97 DAI names
  ALSA: hda - Add support for new IDT 92HD98 and 92HD99 codecs
  ALSA: HDA: Add ideapad quirk for two Dell machines
  ALSA: HDA: Add a new Conexant codec 506e (20590)
  ALSA: usb-audio: fix oops due to cleanup race when disconnecting
  ASoC: Hook wm_hubs micbiases up to CLK_SYS
  ASoC: Correct definition of WM8903_VMID_RES_5K
  ASoC: Fix WM8958 default microphone detection argument ordering
  ALSA: HDA: Fix mic initialization in VIA auto parser
  ALSA: fix one memory leak in sound jack

13 years agomm: <asm-generic/pgtable.h> must include <linux/mm_types.h>
Ben Hutchings [Sun, 27 Feb 2011 05:41:35 +0000 (05:41 +0000)]
mm: <asm-generic/pgtable.h> must include <linux/mm_types.h>

Commit e2cda3226481 ("thp: add pmd mangling generic functions") replaced
some macros in <asm-generic/pgtable.h> with inline functions.

If the functions are to be defined (not all architectures need them)
then struct vm_area_struct must be defined first.  So include
<linux/mm_types.h>.

Fixes a build failure seen in Debian:

    CC [M]  drivers/media/dvb/mantis/mantis_pci.o
  In file included from arch/arm/include/asm/pgtable.h:460,
                   from drivers/media/dvb/mantis/mantis_pci.c:25:
  include/asm-generic/pgtable.h: In function 'ptep_test_and_clear_young':
  include/asm-generic/pgtable.h:29: error: dereferencing pointer to incomplete type

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agox86: Use u32 instead of long to set reset vector back to 0
Don Zickus [Tue, 8 Feb 2011 04:25:00 +0000 (23:25 -0500)]
x86: Use u32 instead of long to set reset vector back to 0

A customer of ours, complained that when setting the reset
vector back to 0, it trashed other data and hung their box.
They noticed when only 4 bytes were set to 0 instead of 8,
everything worked correctly.

Mathew pointed out:

 |
 | We're supposed to be resetting trampoline_phys_low and
 | trampoline_phys_high here, which are two 16-bit values.
 | Writing 64 bits is definitely going to overwrite space
 | that we're not supposed to be touching.
 |

So limit the area modified to u32.

Signed-off-by: Don Zickus <dzickus@redhat.com>
Acked-by: Matthew Garrett <mjg@redhat.com>
Cc: <stable@kernel.org>
LKML-Reference: <1297139100-424-1-git-send-email-dzickus@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agoperf timechart: Fix max number of cpus
Thomas Renninger [Sun, 27 Feb 2011 21:36:46 +0000 (22:36 +0100)]
perf timechart: Fix max number of cpus

Currently numcpus is determined in pid_put_sample which is only
called on sched_switch/sched_wakeup sample processing.

On a machine with a lot cpus I often saw the last cpu missing.

Check for (max) numcpus on every event happening and in the
beginning. -> fixes the issue for me.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: lenb@kernel.org
LKML-Reference: <1298842606-55712-6-git-send-email-trenn@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agoperf timechart: Fix black idle boxes in the title
Thomas Renninger [Sun, 27 Feb 2011 21:36:45 +0000 (22:36 +0100)]
perf timechart: Fix black idle boxes in the title

This fix is needed for eye of gnome and firefox svg viewers.
Only Inkscape can handle the broken case.

Compare with the other svg_legenda_box declarations, looks
like a typo slipped in at this place.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: lenb@kernel.org
LKML-Reference: <1298842606-55712-5-git-send-email-trenn@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agoMerge remote branch 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next into...
Dave Airlie [Mon, 28 Feb 2011 05:35:16 +0000 (15:35 +1000)]
Merge remote branch 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next into drm-fixes

* 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next:
  drm/nv50-nvc0: make sure vma is definitely unmapped when destroying bo

13 years agodrm: fix unsigned vs signed comparison issue in modeset ctl ioctl.
Dave Airlie [Wed, 23 Feb 2011 22:35:06 +0000 (08:35 +1000)]
drm: fix unsigned vs signed comparison issue in modeset ctl ioctl.

This fixes CVE-2011-1013.

Reported-by: Matthiew Herrb (OpenBSD X.org team)
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/nv50-nvc0: make sure vma is definitely unmapped when destroying bo
Ben Skeggs [Mon, 28 Feb 2011 04:22:12 +0000 (14:22 +1000)]
drm/nv50-nvc0: make sure vma is definitely unmapped when destroying bo

Somehow fixes a misrendering + hang at GDM startup on my NVA8...

My first guess would have been stale TLB entries laying around that a new
bo then accidentally inherits.  That doesn't make a great deal of sense
however, as when we mapped the pages for the new bo the TLBs would've
gotten flushed anyway.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
13 years agodrm/radeon: make sure ib reads are in-order.
Dave Airlie [Mon, 28 Feb 2011 04:27:03 +0000 (14:27 +1000)]
drm/radeon: make sure ib reads are in-order.

have to read values from the IB in order as we could cross
a page boundary at any time and won't be able to go backwards.

Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/radeon/r600_cs: off by one errors
Dan Carpenter [Sat, 26 Feb 2011 01:48:18 +0000 (04:48 +0300)]
drm/radeon/r600_cs: off by one errors

There are a bunch of off by one errors in the sanity checks here.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agohwmon: (adt7411) add MODULE_DEVICE_TABLE
axel lin [Thu, 24 Feb 2011 02:22:01 +0000 (02:22 +0000)]
hwmon: (adt7411) add MODULE_DEVICE_TABLE

The device table is required to load modules based on modaliases.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
13 years agohwmon: (ad7414) add MODULE_DEVICE_TABLE
axel lin [Thu, 24 Feb 2011 02:20:37 +0000 (02:20 +0000)]
hwmon: (ad7414) add MODULE_DEVICE_TABLE

The device table is required to load modules based on modaliases.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
13 years agoMerge branch 'fix/asoc' into for-linus
Takashi Iwai [Sat, 26 Feb 2011 10:27:47 +0000 (11:27 +0100)]
Merge branch 'fix/asoc' into for-linus

13 years agoclockevents: Prevent oneshot mode when broadcast device is periodic
Thomas Gleixner [Fri, 25 Feb 2011 21:34:23 +0000 (22:34 +0100)]
clockevents: Prevent oneshot mode when broadcast device is periodic

When the per cpu timer is marked CLOCK_EVT_FEAT_C3STOP, then we only
can switch into oneshot mode, when the backup broadcast device
supports oneshot mode as well. Otherwise we would try to switch the
broadcast device into an unsupported mode unconditionally. This went
unnoticed so far as the current available broadcast devices support
oneshot mode. Seth unearthed this problem while debugging and working
around an hpet related BIOS wreckage.

Add the necessary check to tick_is_oneshot_available().

Reported-and-tested-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <alpine.LFD.2.00.1102252231200.2701@localhost6.localdomain6>
Cc: stable@kernel.org # .21 ->
13 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspe...
Linus Torvalds [Fri, 25 Feb 2011 23:15:17 +0000 (15:15 -0800)]
Merge branch 'pm-fixes' of git://git./linux/kernel/git/rafael/suspend-2.6

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM: Make ACPI wakeup from S5 work again when CONFIG_PM_SLEEP is unset

13 years agorapidio: fix sysfs config attribute to access 16MB of maint space
Alexandre Bounine [Fri, 25 Feb 2011 22:44:31 +0000 (14:44 -0800)]
rapidio: fix sysfs config attribute to access 16MB of maint space

Fixes sysfs config attribute to allow access to entire 16MB maintenance
space of RapidIO devices.

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Li Yang <leoli@freescale.com>
Cc: Thomas Moll <thomas.moll@sysgo.com>
Cc: Micha Nelissen <micha@neli.hopto.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agopps: initialize ts_real properly
Alexander Gordeev [Fri, 25 Feb 2011 22:44:30 +0000 (14:44 -0800)]
pps: initialize ts_real properly

Initialize ts_real.flags to fix compiler warning about possible
uninitialized use of this field.

Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Rodolfo Giometti <giometti@linux.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomemcg: more mem_cgroup_uncharge() batching
Hugh Dickins [Fri, 25 Feb 2011 22:44:29 +0000 (14:44 -0800)]
memcg: more mem_cgroup_uncharge() batching

It seems odd that truncate_inode_pages_range(), called not only when
truncating but also when evicting inodes, has mem_cgroup_uncharge_start
and _end() batching in its second loop to clear up a few leftovers, but
not in its first loop that does almost all the work: add them there too.

Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agothp: fix interleaving for transparent hugepages
Andi Kleen [Fri, 25 Feb 2011 22:44:28 +0000 (14:44 -0800)]
thp: fix interleaving for transparent hugepages

The THP code didn't pass the correct interleaving shift to the memory
policy code.  Fix this here by adjusting for the order.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoaio: fix race between io_destroy() and io_submit()
Jan Kara [Fri, 25 Feb 2011 22:44:27 +0000 (14:44 -0800)]
aio: fix race between io_destroy() and io_submit()

A race can occur when io_submit() races with io_destroy():

 CPU1 CPU2
io_submit()
  do_io_submit()
    ...
    ctx = lookup_ioctx(ctx_id);
io_destroy()
    Now do_io_submit() holds the last reference to ctx.
    ...
    queue new AIO
    put_ioctx(ctx) - frees ctx with active AIOs

We solve this issue by checking whether ctx is being destroyed in AIO
submission path after adding new AIO to ctx.  Then we are guaranteed that
either io_destroy() waits for new AIO or we see that ctx is being
destroyed and bail out.

Cc: Nick Piggin <npiggin@kernel.dk>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoaio: fix rcu ioctx lookup
Nick Piggin [Fri, 25 Feb 2011 22:44:26 +0000 (14:44 -0800)]
aio: fix rcu ioctx lookup

aio-dio-invalidate-failure GPFs in aio_put_req from io_submit.

lookup_ioctx doesn't implement the rcu lookup pattern properly.
rcu_read_lock does not prevent refcount going to zero, so we might take
a refcount on a zero count ioctx.

Fix the bug by atomically testing for zero refcount before incrementing.

[jack@suse.cz: added comment into the code]
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomm: fix dubious code in __count_immobile_pages()
Namhyung Kim [Fri, 25 Feb 2011 22:44:25 +0000 (14:44 -0800)]
mm: fix dubious code in __count_immobile_pages()

When pfn_valid_within() failed 'iter' was incremented twice.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrivers/rtc/rtc-ds3232.c: fix time range difference between linux and RTC chip
Lei Xu [Fri, 25 Feb 2011 22:44:23 +0000 (14:44 -0800)]
drivers/rtc/rtc-ds3232.c: fix time range difference between linux and RTC chip

In linux rtc_time struct, tm_mon range is 0~11, tm_wday range is 0~6,
while in RTC HW REG, month range is 1~12, day of the week range is 1~7,
this patch adjusts difference of them.

The efect of this bug was that most of month will be operated on as the
next month by the hardware (When in Jan it maybe even worse).  For
example, if in May, software wrote 4 to the hardware, which handled it as
April.  Then the logic would be different between software and hardware,
which would cause weird things to happen.

Signed-off-by: Lei Xu <B33228@freescale.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Jack Lan <jack.lan@freescale.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoldm: corrupted partition table can cause kernel oops
Timo Warns [Fri, 25 Feb 2011 22:44:21 +0000 (14:44 -0800)]
ldm: corrupted partition table can cause kernel oops

The kernel automatically evaluates partition tables of storage devices.
The code for evaluating LDM partitions (in fs/partitions/ldm.c) contains
a bug that causes a kernel oops on certain corrupted LDM partitions.  A
kernel subsystem seems to crash, because, after the oops, the kernel no
longer recognizes newly connected storage devices.

The patch changes ldm_parse_vmdb() to Validate the value of vblk_size.

Signed-off-by: Timo Warns <warns@pre-sense.de>
Cc: Eugene Teo <eugeneteo@kernel.sg>
Acked-by: Richard Russon <ldm@flatcap.org>
Cc: Harvey Harrison <harvey.harrison@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomm: vmscan: stop reclaim/compaction earlier due to insufficient progress if !__GFP_REPEAT
Mel Gorman [Fri, 25 Feb 2011 22:44:20 +0000 (14:44 -0800)]
mm: vmscan: stop reclaim/compaction earlier due to insufficient progress if !__GFP_REPEAT

should_continue_reclaim() for reclaim/compaction allows scanning to
continue even if pages are not being reclaimed until the full list is
scanned.  In terms of allocation success, this makes sense but potentially
it introduces unwanted latency for high-order allocations such as
transparent hugepages and network jumbo frames that would prefer to fail
the allocation attempt and fallback to order-0 pages.  Worse, there is a
potential that the full LRU scan will clear all the young bits, distort
page aging information and potentially push pages into swap that would
have otherwise remained resident.

This patch will stop reclaim/compaction if no pages were reclaimed in the
last SWAP_CLUSTER_MAX pages that were considered.  For allocations such as
hugetlbfs that use __GFP_REPEAT and have fewer fallback options, the full
LRU list may still be scanned.

Order-0 allocation should not be affected because RECLAIM_MODE_COMPACTION
is not set so the following avoids the gfp_mask being examined:

        if (!(sc->reclaim_mode & RECLAIM_MODE_COMPACTION))
                return false;

A tool was developed based on ftrace that tracked the latency of
high-order allocations while transparent hugepage support was enabled and
three benchmarks were run.  The "fix-infinite" figures are 2.6.38-rc4 with
Johannes's patch "vmscan: fix zone shrinking exit when scan work is done"
applied.

  STREAM Highorder Allocation Latency Statistics
                 fix-infinite     break-early
  1 :: Count            10298           10229
  1 :: Min             0.4560          0.4640
  1 :: Mean            1.0589          1.0183
  1 :: Max            14.5990         11.7510
  1 :: Stddev          0.5208          0.4719
  2 :: Count                2               1
  2 :: Min             1.8610          3.7240
  2 :: Mean            3.4325          3.7240
  2 :: Max             5.0040          3.7240
  2 :: Stddev          1.5715          0.0000
  9 :: Count           111696          111694
  9 :: Min             0.5230          0.4110
  9 :: Mean           10.5831         10.5718
  9 :: Max            38.4480         43.2900
  9 :: Stddev          1.1147          1.1325

Mean time for order-1 allocations is reduced.  order-2 looks increased but
with so few allocations, it's not particularly significant.  THP mean
allocation latency is also reduced.  That said, allocation time varies so
significantly that the reductions are within noise.

Max allocation time is reduced by a significant amount for low-order
allocations but reduced for THP allocations which presumably are now
breaking before reclaim has done enough work.

  SysBench Highorder Allocation Latency Statistics
                 fix-infinite     break-early
  1 :: Count            15745           15677
  1 :: Min             0.4250          0.4550
  1 :: Mean            1.1023          1.0810
  1 :: Max            14.4590         10.8220
  1 :: Stddev          0.5117          0.5100
  2 :: Count                1               1
  2 :: Min             3.0040          2.1530
  2 :: Mean            3.0040          2.1530
  2 :: Max             3.0040          2.1530
  2 :: Stddev          0.0000          0.0000
  9 :: Count             2017            1931
  9 :: Min             0.4980          0.7480
  9 :: Mean           10.4717         10.3840
  9 :: Max            24.9460         26.2500
  9 :: Stddev          1.1726          1.1966

Again, mean time for order-1 allocations is reduced while order-2
allocations are too few to draw conclusions from.  The mean time for THP
allocations is also slightly reduced albeit the reductions are within
varianes.

Once again, our maximum allocation time is significantly reduced for
low-order allocations and slightly increased for THP allocations.

  Anon stream mmap reference Highorder Allocation Latency Statistics
  1 :: Count             1376            1790
  1 :: Min             0.4940          0.5010
  1 :: Mean            1.0289          0.9732
  1 :: Max             6.2670          4.2540
  1 :: Stddev          0.4142          0.2785
  2 :: Count                1               -
  2 :: Min             1.9060               -
  2 :: Mean            1.9060               -
  2 :: Max             1.9060               -
  2 :: Stddev          0.0000               -
  9 :: Count            11266           11257
  9 :: Min             0.4990          0.4940
  9 :: Mean        27250.4669      24256.1919
  9 :: Max      11439211.0000    6008885.0000
  9 :: Stddev     226427.4624     186298.1430

This benchmark creates one thread per CPU which references an amount of
anonymous memory 1.5 times the size of physical RAM.  This pounds swap
quite heavily and is intended to exercise THP a bit.

Mean allocation time for order-1 is reduced as before.  It's also reduced
for THP allocations but the variations here are pretty massive due to
swap.  As before, maximum allocation times are significantly reduced.

Overall, the patch reduces the mean and maximum allocation latencies for
the smaller high-order allocations.  This was with Slab configured so it
would be expected to be more significant with Slub which uses these size
allocations more aggressively.

The mean allocation times for THP allocations are also slightly reduced.
The maximum latency was slightly increased as predicted by the comments
due to reclaim/compaction breaking early.  However, workloads care more
about the latency of lower-order allocations than THP so it's an
acceptable trade-off.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrivers/nfc/pn544.c: add missing regulator
Matti J. Aaltonen [Fri, 25 Feb 2011 22:44:19 +0000 (14:44 -0800)]
drivers/nfc/pn544.c: add missing regulator

The regulator framework is used for power management.  The regulators are
only named in the driver code, the actual control stuff is in the board
file for each architecture or use case.

The PN544 chip has three regulators that can be controlled or not -
depending on the architecture where the chip is being used.  So some of
the regulators may not be controllable.  In our current case the third
regulator, which was missing from the code, went unnoticed because we
didn't need to control it.  To be as general as possible - in this respect
- the driver needs to list all regulators.  Then the board file can be
used to actually set the usage.

Signed-off-by: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrivers/nfc/Kconfig: use full form of the NFC acronym
Matti J. Aaltonen [Fri, 25 Feb 2011 22:44:18 +0000 (14:44 -0800)]
drivers/nfc/Kconfig: use full form of the NFC acronym

Spell out the NFC acronym when it's shown for the first time.

Signed-off-by: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoswiotlb: fix wrong panic
FUJITA Tomonori [Fri, 25 Feb 2011 22:44:16 +0000 (14:44 -0800)]
swiotlb: fix wrong panic

swiotlb's map_page wrongly calls panic() when it can't find a buffer fit
for device's dma mask.  It should return an error instead.

Devices with an odd dma mask (i.e.  under 4G) like b44 network card hit
this bug (the system crashes):

   http://marc.info/?l=linux-kernel&m=129648943830106&w=2

If swiotlb returns an error, b44 driver can use the own bouncing
mechanism.

Reported-by: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: Arkadiusz Miskiewicz <arekm@maven.pl>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMAINTAINERS: add Chinese documentation maintainer
Harry Wei [Fri, 25 Feb 2011 22:44:15 +0000 (14:44 -0800)]
MAINTAINERS: add Chinese documentation maintainer

I have translated some kernel documentation so I wish to maintain the
Chinese documentation in our kernel directories.

Signed-off-by: Harry Wei <harryxiyou@gmail.com>
Cc: Joe Perches <joe@perches.com>
Cc: Greg KH <greg@kroah.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomm: grab rcu read lock in move_pages()
Greg Thelen [Fri, 25 Feb 2011 22:44:13 +0000 (14:44 -0800)]
mm: grab rcu read lock in move_pages()

The move_pages() usage of find_task_by_vpid() requires rcu_read_lock() to
prevent free_pid() from reclaiming the pid.

Without this patch, RCU warnings are printed in v2.6.38-rc4 move_pages()
with:

  CONFIG_LOCKUP_DETECTOR=y
  CONFIG_PREEMPT=y
  CONFIG_LOCKDEP=y
  CONFIG_PROVE_LOCKING=y
  CONFIG_PROVE_RCU=y

Previously, migrate_pages() went through a similar transformation
replacing usage of tasklist_lock with rcu read lock:

  commit 55cfaa3cbdd29c4919ecb5fb8965c310f357e48c
  Author: Zeng Zhaoming <zengzm.kernel@gmail.com>
  Date:   Thu Dec 2 14:31:13 2010 -0800

      mm/mempolicy.c: add rcu read lock to protect pid structure

  commit 1e50df39f6e2c3a4a3394df62baa8a213df16c54
  Author: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
  Date:   Thu Jan 13 15:46:14 2011 -0800

      mempolicy: remove tasklist_lock from migrate_pages

Signed-off-by: Greg Thelen <gthelen@google.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Zeng Zhaoming <zengzm.kernel@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoepoll: prevent creating circular epoll structures
Davide Libenzi [Fri, 25 Feb 2011 22:44:12 +0000 (14:44 -0800)]
epoll: prevent creating circular epoll structures

In several places, an epoll fd can call another file's ->f_op->poll()
method with ep->mtx held.  This is in general unsafe, because that other
file could itself be an epoll fd that contains the original epoll fd.

The code defends against this possibility in its own ->poll() method using
ep_call_nested, but there are several other unsafe calls to ->poll
elsewhere that can be made to deadlock.  For example, the following simple
program causes the call in ep_insert recursively call the original fd's
->poll, leading to deadlock:

 #include <unistd.h>
 #include <sys/epoll.h>

 int main(void) {
     int e1, e2, p[2];
     struct epoll_event evt = {
         .events = EPOLLIN
     };

     e1 = epoll_create(1);
     e2 = epoll_create(2);
     pipe(p);

     epoll_ctl(e2, EPOLL_CTL_ADD, e1, &evt);
     epoll_ctl(e1, EPOLL_CTL_ADD, p[0], &evt);
     write(p[1], p, sizeof p);
     epoll_ctl(e1, EPOLL_CTL_ADD, e2, &evt);

     return 0;
 }

On insertion, check whether the inserted file is itself a struct epoll,
and if so, do a recursive walk to detect whether inserting this file would
create a loop of epoll structures, which could lead to deadlock.

[nelhage@ksplice.com: Use epmutex to serialize concurrent inserts]
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Nelson Elhage <nelhage@ksplice.com>
Reported-by: Nelson Elhage <nelhage@ksplice.com>
Tested-by: Nelson Elhage <nelhage@ksplice.com>
Cc: <stable@kernel.org> [2.6.34+, possibly earlier]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6
Linus Torvalds [Fri, 25 Feb 2011 22:04:44 +0000 (14:04 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/lrg/voltage-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
  regulator, mc13xxx: Remove pointless test for unsigned less than zero
  regulator: Fix warning with CONFIG_BUG disabled

13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
Linus Torvalds [Fri, 25 Feb 2011 22:03:39 +0000 (14:03 -0800)]
Merge git://git./linux/kernel/git/mason/btrfs-unstable

* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  Btrfs: fix fiemap bugs with delalloc
  Btrfs: set FMODE_EXCL in btrfs_device->mode
  Btrfs: make btrfs_rm_device() fail gracefully
  Btrfs: Avoid accessing unmapped kernel address
  Btrfs: Fix BTRFS_IOC_SUBVOL_SETFLAGS ioctl
  Btrfs: allow balance to explicitly allocate chunks as it relocates
  Btrfs: put ENOSPC debugging under a mount option

13 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 25 Feb 2011 22:02:33 +0000 (14:02 -0800)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86 quirk: Fix polarity for IRQ0 pin2 override on SB800 systems
  x86/mrst: Fix apb timer rating when lapic timer is used
  x86: Fix reboot problem on VersaLogic Menlow boards

13 years agoRTC: fix typo in drivers/rtc/rtc-at91sam9.c
Jelle Martijn Kok [Fri, 25 Feb 2011 19:13:55 +0000 (11:13 -0800)]
RTC: fix typo in drivers/rtc/rtc-at91sam9.c

The member of the rtc_class_ops struct is called alarm_irq_enable and
not alarm_irq_enabled

CC: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jelle Martijn Kok <jmkok@youcom.nl>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'patches_for_2.6.38rc' of git://git.pwsan.com/linux-2.6 into devel-fixes
Tony Lindgren [Fri, 25 Feb 2011 20:27:14 +0000 (12:27 -0800)]
Merge branch 'patches_for_2.6.38rc' of git://git.pwsan.com/linux-2.6 into devel-fixes

13 years agoomap4: prcm: Fix the CPUx clockdomain offsets
Santosh Shilimkar [Fri, 4 Feb 2011 09:58:57 +0000 (15:28 +0530)]
omap4: prcm: Fix the CPUx clockdomain offsets

CPU0 and CPU1 clockdomain is at the offset of 0x18 from the LPRM base.
The header file has set it wrongly to 0x0. Offset 0x0 is for CPUx power
domain control register

Fix the same.

The autogen scripts is fixed thanks to Benoit Cousson

With the old value, the clockdomain code would access the
*_PWRSTCTRL.POWERSTATE field when it thought it was accessing the
*_CLKSTCTRL.CLKTRCTRL field.  In the worst case, this could cause
system power management to behave incorrectly.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Benoit Cousson <b-cousson@ti.com>
[paul@pwsan.com: added second paragraph to commit message]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
13 years agoMerge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 25 Feb 2011 19:14:44 +0000 (11:14 -0800)]
Merge branch 'usb-linus' of git://git./linux/kernel/git/gregkh/usb-2.6

* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  usb: musb: core: set has_tt flag
  USB: xhci: mark local functions as static
  USB: xhci: fix couple sparse annotations
  USB: xhci: rework xhci_print_ir_set() to get ir set from xhci itself
  USB: Reset USB 3.0 devices on (re)discovery
  xhci: Fix an error in count_sg_trbs_needed()
  xhci: Fix errors in the running total calculations in the TRB math
  xhci: Clarify some expressions in the TRB math
  xhci: Avoid BUG() in interrupt context

13 years agoMerge branch 'for-linus' of git://neil.brown.name/md
Linus Torvalds [Fri, 25 Feb 2011 19:13:26 +0000 (11:13 -0800)]
Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md:
  md: Fix - again - partition detection when array becomes active
  Fix over-zealous flush_disk when changing device size.
  md: avoid spinlock problem in blk_throtl_exit
  md: correctly handle probe of an 'mdp' device.
  md: don't set_capacity before array is active.
  md: Fix raid1->raid0 takeover

13 years agoRxRPC: Allocate tokens with kzalloc to avoid oops in rxrpc_destroy
Anton Blanchard [Fri, 25 Feb 2011 15:33:17 +0000 (15:33 +0000)]
RxRPC: Allocate tokens with kzalloc to avoid oops in rxrpc_destroy

With slab poisoning enabled, I see the following oops:

  Unable to handle kernel paging request for data at address 0x6b6b6b6b6b6b6b73
  ...
  NIP [c0000000006bc61c] .rxrpc_destroy+0x44/0x104
  LR [c0000000006bc618] .rxrpc_destroy+0x40/0x104
  Call Trace:
  [c0000000feb2bc00] [c0000000006bc618] .rxrpc_destroy+0x40/0x104 (unreliable)
  [c0000000feb2bc90] [c000000000349b2c] .key_cleanup+0x1a8/0x20c
  [c0000000feb2bd40] [c0000000000a2920] .process_one_work+0x2f4/0x4d0
  [c0000000feb2be00] [c0000000000a2d50] .worker_thread+0x254/0x468
  [c0000000feb2bec0] [c0000000000a868c] .kthread+0xbc/0xc8
  [c0000000feb2bf90] [c000000000020e00] .kernel_thread+0x54/0x70

We aren't initialising token->next, but the code in destroy_context relies
on the list being NULL terminated. Use kzalloc to zero out all the fields.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoafs: Fix oops in afs_unlink_writeback
Anton Blanchard [Fri, 25 Feb 2011 15:33:02 +0000 (15:33 +0000)]
afs: Fix oops in afs_unlink_writeback

I'm seeing the following oops when testing afs:

  Unable to handle kernel paging request for data at address 0x00000008
  ...
  NIP [c0000000003393b0] .afs_unlink_writeback+0x38/0xc0
  LR [c00000000033987c] .afs_put_writeback+0x98/0xec
  Call Trace:
  [c00000000345f600] [c00000000033987c] .afs_put_writeback+0x98/0xec
  [c00000000345f690] [c00000000033ae80] .afs_write_begin+0x6a4/0x75c
  [c00000000345f790] [c00000000012b77c] .generic_file_buffered_write+0x148/0x320
  [c00000000345f8d0] [c00000000012e1b8] .__generic_file_aio_write+0x37c/0x3e4
  [c00000000345f9d0] [c00000000012e2a8] .generic_file_aio_write+0x88/0xfc
  [c00000000345fa90] [c0000000003390a8] .afs_file_write+0x10c/0x178
  [c00000000345fb40] [c000000000188788] .do_sync_write+0xc4/0x128
  [c00000000345fcc0] [c000000000189658] .vfs_write+0xe8/0x1d8
  [c00000000345fd70] [c000000000189884] .SyS_write+0x68/0xb0
  [c00000000345fe30] [c000000000008564] syscall_exit+0x0/0x40

afs_write_begin hits an error and calls afs_unlink_writeback. In there
we do list_del_init on an uninitialised list.

The patch below initialises ->link when creating the afs_writeback struct.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agofuse: fix truncate after open
Miklos Szeredi [Fri, 25 Feb 2011 13:44:58 +0000 (14:44 +0100)]
fuse: fix truncate after open

Commit e1181ee6 "vfs: pass struct file to do_truncate on O_TRUNC
opens" broke the behavior of open(O_TRUNC|O_RDONLY) in fuse.  Fuse
assumed that when called from open, a truncate() will be done, not an
ftruncate().

Fix by restoring the old behavior, based on the ATTR_OPEN flag.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
13 years agofuse: fix hang of single threaded fuseblk filesystem
Miklos Szeredi [Fri, 25 Feb 2011 13:44:58 +0000 (14:44 +0100)]
fuse: fix hang of single threaded fuseblk filesystem

Single threaded NTFS-3G could get stuck if a delayed RELEASE reply
triggered a DESTROY request via path_put().

Fix this by

 a) making RELEASE requests synchronous, whenever possible, on fuseblk
 filesystems

 b) if not possible (triggered by an asynchronous read/write) then do
 the path_put() in a separate thread with schedule_work().

Reported-by: Oliver Neukum <oneukum@suse.de>
Cc: stable@kernel.org
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
13 years agoeukrea-tlv320: fix platform_name
Eric Bénard [Fri, 25 Feb 2011 12:47:46 +0000 (13:47 +0100)]
eukrea-tlv320: fix platform_name

commit f0fba2ad1b6b53d5360125c41953b7afcd6deff0 included a mistake
on the name of the platform in the snd_soc_dai_link structure.

Signed-off-by: Eric Bénard <eric@eukrea.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org
13 years agoASoC: correct pxa AC97 DAI names
Dmitry Eremin-Solenikov [Tue, 22 Feb 2011 23:29:11 +0000 (02:29 +0300)]
ASoC: correct pxa AC97 DAI names

Correct names for pxa AC97 DAI are pxa2xx-ac97 and pxa2xx-ac97-aux. Fix
that for all PXA platforms.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org
13 years agoperf hists: Print number of samples, not the period sum
Arnaldo Carvalho de Melo [Thu, 17 Feb 2011 12:37:23 +0000 (10:37 -0200)]
perf hists: Print number of samples, not the period sum

So that we match the header where we state the number of events with the
"Samples" column when using 'perf report -n/--show-nr-samples':

 [root@emilia ~]# perf record -a sleep 1
 [ perf record: Woken up 1 times to write data ]
 [ perf record: Captured and wrote 0.111 MB perf.data (~4860 samples) ]
 [root@emilia ~]# perf report --stdio --show-nr-samples
 # Events: 11  cycles
 #
 # Overhead  Samples        Command       Shared Object                        Symbol
 # ........ ..........  ...........  ..................  ............................
 #
     16.65%          1        sleep  [kernel.kallsyms]   [k] unmap_vmas
     16.10%          1         perf  libpthread-2.12.so  [.] __pthread_cleanup_push_defer
     15.79%          2         perf  [kernel.kallsyms]   [k] format_decode
     12.88%          1  kworker/1:2  [kernel.kallsyms]   [k] cache_reap
     10.69%          1      swapper  [kernel.kallsyms]   [k] _raw_spin_lock
      7.55%          1        sleep  [kernel.kallsyms]   [k] prepare_exec_creds
      6.00%          1         perf  [jbd2]              [k] start_this_handle
      5.29%          1         perf  [kernel.kallsyms]   [k] seq_read
      4.75%          1         perf  [kernel.kallsyms]   [k] get_pid_task
      4.30%          1         perf  [kernel.kallsyms]   [k] _raw_spin_unlock_irqrestore

 #
 # (For a higher level overview, try: perf report --sort comm,dso)
 #
 [root@emilia ~]#

Reported-by: Stephane Eranian <eranian@google.com>
Reported-by: Cliff Wickman <cpw@sgi.com>
Acked-by: Stephane Eranian <eranian@google.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
Cc: <stable@kernel.org>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
[ cherry-picked it from perf/core, as it has been reported by others as well. ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agoregulator, mc13xxx: Remove pointless test for unsigned less than zero
Jesper Juhl [Wed, 23 Feb 2011 22:45:55 +0000 (23:45 +0100)]
regulator, mc13xxx: Remove pointless test for unsigned less than zero

The variable 'val' is a 'unsigned int', so it can never be less than zero.
This fact makes the "val < 0" part of the test done in BUG_ON() in
mc13xxx_regulator_get_voltage() rather pointles since it can never have
any effect.
This patch removes the pointless test.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
13 years agoregulator: Fix warning with CONFIG_BUG disabled
Mark Brown [Wed, 2 Feb 2011 20:17:22 +0000 (20:17 +0000)]
regulator: Fix warning with CONFIG_BUG disabled

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
13 years agoMerge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux...
Dave Airlie [Fri, 25 Feb 2011 03:37:02 +0000 (13:37 +1000)]
Merge branch 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next

* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: (50 commits)
  drm/nv50: flesh out ZCULL init and match nvidia on later chipsets
  drm/nv50: support for compression
  drm/nv50-nvc0: delay GART binding until move_notify time
  drm/nouveau: rename nouveau_vram to nouveau_mem
  drm/nvc0: allow creation of buffers with any non-compressed memtype
  drm/nv50-nvc0: unmap buffers from the vm when they're evicted
  drm/nv50-nvc0: move vm bind/unbind to move_notify hook
  drm/nv50-nvc0: restrict memtype to those specified at creation time
  drm/nouveau: pass domain rather than ttm flags to gem_new()
  drm/nv50: simplify bo moves now that they're all through the vm
  drm/nouveau: remove no_vm/mappable flags from nouveau_bo
  drm/nouveau: Fix pageflip event
  drm/nouveau/vbios: parse more gpio tag bits from connector table
  drm/nouveau: decode PFIFO DMA_PUSHER error codes
  drm/nv50: fix typos in CCACHE error reporting
  drm/nvc0: support for sw methods + enable page flipping
  drm/nv50: enable page flipping
  drm/nv50-nvc0: activate/update ds channel's framebuffer on modesets
  drm/nv50-nvc0: initialise display sync channels
  drm/nv50-nvc0: precalculate some fb state when creating them
  ...

13 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Fri, 25 Feb 2011 01:08:48 +0000 (17:08 -0800)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/i915: Fix unintended recursion in ironlake_disable_rc6
  drm/i915: fix corruptions on i8xx due to relaxed fencing
  drm/i915: skip FDI & PCH enabling for DP_A
  agp/intel: Experiment with a 855GM GWB bit
  drm/i915: don't enable FDI & transcoder interrupts after all
  drm/i915: Ignore a hung GPU when flushing the framebuffer prior to a switch