]> git.karo-electronics.de Git - linux-beck.git/log
linux-beck.git
13 years ago[CPUFREQ] S5PV210: Lock a mutex while changing the cpu frequency
Arve Hjønnevåg [Fri, 24 Jun 2011 07:04:16 +0000 (16:04 +0900)]
[CPUFREQ] S5PV210: Lock a mutex while changing the cpu frequency

Without this lock the call to change the frequency for suspend could
switch to a new frequency while another thread was still changing the
cpu voltage.

Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] S5PV210: Add pm_notifier to prevent system unstable
Huisung Kang [Fri, 24 Jun 2011 07:04:15 +0000 (16:04 +0900)]
[CPUFREQ] S5PV210: Add pm_notifier to prevent system unstable

Minimum 800MHz is needed to enter/exit suspend mode due to voltage mismatch.

Signed-off-by: Huisung Kang <hs1218.kang@samsung.com>
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] S5PV210: Add arm/int voltage control support
Jonghwan Choi [Fri, 24 Jun 2011 07:04:14 +0000 (16:04 +0900)]
[CPUFREQ] S5PV210: Add arm/int voltage control support

Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] S5PV210: Add additional symantics for "relation" in cpufreq with pm
Huisung Kang [Fri, 24 Jun 2011 07:04:13 +0000 (16:04 +0900)]
[CPUFREQ] S5PV210: Add additional symantics for "relation" in cpufreq with pm

Relation has an additional symantics other than standard.
s5pv310_target funtion have below additional relation.
- DISABLE_FURTHER_CPUFREQ : disable further access to target
- ENABLE_FURTHER_CPUFRER : enable access to target

Signed-off-by: Huisung Kang <hs1218.kang@samsung.com>
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] S3C64xx: Notify transition complete as soon as frequency changed
Mark Brown [Wed, 22 Jun 2011 14:08:56 +0000 (15:08 +0100)]
[CPUFREQ] S3C64xx: Notify transition complete as soon as frequency changed

The CPUFREQ_POSTCHANGE notification is used to update things that depend on
the system clock rates. Since this may include the interfaces used to talk
to the regulators do the notification before we try to update regulators
to reflect lowered system clock rate.

The voltage scaling is just a power optimisation and may not happen at all
so there's no concern about it not having completed.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] S3C6410: Support 800MHz operation in cpufreq
Mark Brown [Wed, 8 Jun 2011 13:49:15 +0000 (14:49 +0100)]
[CPUFREQ] S3C6410: Support 800MHz operation in cpufreq

At least some newer S3C6410 silicon supports operation up to 800MHz rather
than just 667MHz. Unfortunately I don't have access to any of documentation
of this other than some running systems, add a new cpufreq table entry for
this based on the behaviour of those systems.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] s5pv210-cpufreq.c: Add missing clk_put
Julia Lawall [Tue, 7 Jun 2011 01:59:02 +0000 (18:59 -0700)]
[CPUFREQ] s5pv210-cpufreq.c: Add missing clk_put

The successive calls to clk_get each call clk_put in the case of failure,
but this is not done for subsequent error handling code.  The calls to
clk_get are moved to the end of the function, and appropriate gotos are
added.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r exists@
expression e1,e2;
statement S;
@@

e1 = clk_get@p1(...);
... when != e1 = e2
    when != clk_put(e1)
    when any
if (...) { ... when != clk_put(e1)
               when != if (...) { ... clk_put(e1) ... }
* return@p3 ...;
 } else S
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] Move compile for S3C64XX cpufreq to /drivers/cpufreq
Kukjin Kim [Tue, 7 Jun 2011 01:43:01 +0000 (18:43 -0700)]
[CPUFREQ] Move compile for S3C64XX cpufreq to /drivers/cpufreq

Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] Remove some vi noise that escaped into the Makefile.
Dave Jones [Tue, 7 Jun 2011 01:10:04 +0000 (21:10 -0400)]
[CPUFREQ] Remove some vi noise that escaped into the Makefile.

13 years ago[CPUFREQ] Move ARM Samsung cpufreq drivers to drivers/cpufreq/
Kukjin Kim [Wed, 1 Jun 2011 21:18:22 +0000 (14:18 -0700)]
[CPUFREQ] Move ARM Samsung cpufreq drivers to drivers/cpufreq/

According to discussion of the ARM arch subsystem migration,
ARM cpufreq drivers move to drivers/cpufreq. So this patch
adds Kconfig.arm for ARM like x86 and adds Samsung S5PV210
and EXYNOS4210 cpufreq driver compile in there.
As a note, otherw will be moved.

Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ/S3C64xx] Move S3C64xx CPUfreq driver into drivers/cpufreq
Mark Brown [Tue, 10 May 2011 13:42:08 +0000 (15:42 +0200)]
[CPUFREQ/S3C64xx] Move S3C64xx CPUfreq driver into drivers/cpufreq

This is a straight code motion patch, there are no changes to the driver
itself. The Kconfig is left untouched as the ARM CPUfreq Kconfig is all
in one big block in arm/Kconfig and should be moved en masse rather than
being done piecemeal.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years ago[CPUFREQ] Handle CPUs with different capabilities in acpi-cpufreq
Matthew Garrett [Wed, 13 Jul 2011 21:58:32 +0000 (17:58 -0400)]
[CPUFREQ] Handle CPUs with different capabilities in acpi-cpufreq

acpi-cpufreq checks each CPU for aperf/mperf support, but only sets a
global flag. This will cause errors if some CPUs in the system don't
support the feature. Check boot_cpu_has() instead in order to make sure
that all CPUs support it.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Tue, 12 Jul 2011 21:21:19 +0000 (14:21 -0700)]
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/mm: Fix memory_block_size_bytes() for non-pseries
  mm: Move definition of MIN_MEMORY_BLOCK_SIZE to a header

13 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
Linus Torvalds [Tue, 12 Jul 2011 21:19:51 +0000 (14:19 -0700)]
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc:
  pcmcia: pxa2xx/vpac270: free gpios on exist rather than requesting
  ARM: pxa/raumfeld: fix device name for codec ak4104
  ARM: pxa/raumfeld: display initialisation fixes
  ARM: pxa/raumfeld: adapt to upcoming hardware change
  ARM: pxa: fix gpio_to_chip() clash with gpiolib namespace
  genirq: replace irq_gc_ack() with {set,clr}_bit variants (fwd)
  arm: mach-vt8500: add forgotten irq_data conversion
  ARM: pxa168: correct nand pmu setting
  ARM: pxa910: correct nand pmu setting
  ARM: pxa: fix PGSR register address calculation

13 years agoMerge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keith...
Linus Torvalds [Tue, 12 Jul 2011 21:18:00 +0000 (14:18 -0700)]
Merge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6

* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/keithp/linux-2.6:
  drm/i915/ringbuffer: Idling requires waiting for the ring to be empty
  Revert "drm/i915: enable rc6 by default"
  drm/i915: Clean up i915_driver_load failure path
  drm/i915: Enable GPU reset on Ivybridge.
  drm/i915/dp: manage sink power state if possible
  drm/i915/dp: consolidate AUX retry code
  drm/i915/dp: remove DPMS mode tracking from DP
  drm/i915/dp: try to read receiver capabilities 3 times when detecting
  drm/i915/dp: read more receiver capability bits on hotplug
  drm/i915/dp: use DP DPCD defines when looking at DPCD values
  drm/i915/dp: retry link status read 3 times on failure

13 years agodrm/i915/ringbuffer: Idling requires waiting for the ring to be empty
Chris Wilson [Tue, 12 Jul 2011 17:03:29 +0000 (18:03 +0100)]
drm/i915/ringbuffer: Idling requires waiting for the ring to be empty

...which is measured by the size and not the amount of space remaining.

Waiting upon size-8, did one of two things. In the common case with more
than 8 bytes available to write into the ring, it would return
immediately. Otherwise, it would timeout given the impossible condition
of waiting for more space than is available in the ring, leading to
warnings such as:

[drm:intel_cleanup_ring_buffer] *ERROR* failed to quiesce render ring
whilst cleaning up: -16

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
13 years agoRevert "drm/i915: enable rc6 by default"
Keith Packard [Tue, 12 Jul 2011 15:49:31 +0000 (08:49 -0700)]
Revert "drm/i915: enable rc6 by default"

This reverts commit a51f7a66fb5e4af5ec4286baef940d06594b59d2.

We still have a few Ironlake and Sandybridge machines which fail when
RC6 is enabled. Better luck next release?

Signed-off-by: Keith Packard <keithp@keithp.com>
13 years agodrm/i915: Clean up i915_driver_load failure path
Keith Packard [Sun, 10 Jul 2011 20:12:17 +0000 (13:12 -0700)]
drm/i915: Clean up i915_driver_load failure path

i915_driver_load adds a write-combining MTRR region for the GTT
aperture to improve memory speeds through the aperture. If
i915_driver_load fails after this, it would not have cleaned up the
MTRR. This shouldn't cause any problems, except for consuming an MTRR
register. Still, it's best to clean up completely in the failure path,
which is easily done by calling mtrr_del if the mtrr was successfully
allocated.

i915_driver_load calls i915_gem_load which register
i915_gem_inactive_shrink. If i915_driver_load fails after calling
i915_gem_load, the shrinker will be left registered. When called, it
will access freed memory and crash. The fix is to unregister the shrinker in the
failure path using code duplicated from i915_driver_unload.

i915_driver_load also has some incorrect gotos in the error cleanup
paths:

 * After failing to initialize the GTT (which cannot happen, btw,
   intel_gtt_get returns a fixed (non-NULL) value), it tries to
   free the uninitialized WC IO mapping. Fixed this by changing the
   target from out_iomapfree to out_rmmap

Signed-off-by: Keith Packard <keithp@keithp.com>
Tested-by: Lin Ming <ming.m.lin@intel.com>
13 years agopowerpc/mm: Fix memory_block_size_bytes() for non-pseries
Benjamin Herrenschmidt [Tue, 14 Jun 2011 00:57:51 +0000 (10:57 +1000)]
powerpc/mm: Fix memory_block_size_bytes() for non-pseries

Just compiling pseries in the kernel causes it to override
memory_block_size_bytes() regardless of what is the runtime
platform.

This cleans up the implementation of that function, fixing
a bug or two while at it, so that it's harmless (and potentially
useful) for other platforms. Without this, bugs in that code
would trigger a WARN_ON() in drivers/base/memory.c when
booting some different platforms.

If/when we have another platform supporting memory hotplug we
might want to either move that out to a generic place or
make it a ppc_md. callback.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agomm: Move definition of MIN_MEMORY_BLOCK_SIZE to a header
Benjamin Herrenschmidt [Tue, 14 Jun 2011 00:57:50 +0000 (10:57 +1000)]
mm: Move definition of MIN_MEMORY_BLOCK_SIZE to a header

The macro MIN_MEMORY_BLOCK_SIZE is currently defined twice in two .c
files, and I need it in a third one to fix a powerpc bug, so let's
first move it into a header

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
13 years agoLinux 3.0-rc7
Linus Torvalds [Mon, 11 Jul 2011 23:51:52 +0000 (16:51 -0700)]
Linux 3.0-rc7

13 years agoDocumentation/Changes: remove some really obsolete text
Linus Torvalds [Mon, 11 Jul 2011 23:48:38 +0000 (16:48 -0700)]
Documentation/Changes: remove some really obsolete text

That file harkens back to the days of the big 2.4 -> 2.6 version jump,
and was based even then on older versions.  Some of it is just obsolete,
and Jesper Juhl points out that it talks about kernel versions 2.6 and
should be updated to 3.0.

Remove some obsolete text, and re-phrase some other to not be 2.6-specific.

Reported-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Mon, 11 Jul 2011 23:43:27 +0000 (16:43 -0700)]
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6:
  [media] msp3400: fill in v4l2_tuner based on vt->type field
  [media] tuner-core.c: don't change type field in g_tuner or g_frequency
  [media] cx18/ivtv: fix g_tuner support
  [media] tuner-core: power up tuner when called with s_power(1)
  [media] v4l2-ioctl.c: check for valid tuner type in S_HW_FREQ_SEEK
  [media] tuner-core: simplify the standard fixup
  [media] tuner-core/v4l2-subdev: document that the type field has to be filled in
  [media] v4l2-subdev.h: remove unused s_mode tuner op
  [media] feature-removal-schedule: change in how radio device nodes are handled
  [media] bttv: fix s_tuner for radio
  [media] pvrusb2: fix g/s_tuner support
  [media] v4l2-ioctl.c: prefill tuner type for g_frequency and g/s_tuner
  [media] tuner-core: fix tuner_resume: use t->mode instead of t->type
  [media] tuner-core: fix s_std and s_tuner

13 years agoMerge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux...
Arnd Bergmann [Mon, 11 Jul 2011 21:26:16 +0000 (23:26 +0200)]
Merge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into fixes

13 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspe...
Linus Torvalds [Mon, 11 Jul 2011 19:49:03 +0000 (12:49 -0700)]
Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM: Reintroduce dropped call to check_wakeup_irqs

13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Mon, 11 Jul 2011 19:48:24 +0000 (12:48 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: drop spinlock before calling cifs_put_tlink
  cifs: fix expand_dfs_referral
  cifs: move bdi_setup_and_register outside of CONFIG_CIFS_DFS_UPCALL
  cifs: factor smb_vol allocation out of cifs_setup_volume_info
  cifs: have cifs_cleanup_volume_info not take a double pointer
  cifs: fix build_unc_path_to_root to account for a prefixpath
  cifs: remove bogus call to cifs_cleanup_volume_info

13 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
Linus Torvalds [Mon, 11 Jul 2011 19:47:53 +0000 (12:47 -0700)]
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] fix cpumask memory leak in acpi-cpufreq on cpu hotplug.

13 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platf...
Linus Torvalds [Mon, 11 Jul 2011 19:47:09 +0000 (12:47 -0700)]
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86:
  hp-wmi: fix use after free
  dell-laptop - using buffer without mutex_lock
  Revert: "dell-laptop: Toggle the unsupported hardware killswitch"
  platform-drivers-x86: set backlight type to BACKLIGHT_PLATFORM
  thinkpad-acpi: handle HKEY 0x4010, 0x4011 events
  drivers/platform/x86: Fix memory leak
  thinkpad-acpi: handle some new HKEY 0x60xx events
  acer-wmi: fix bitwise bug when set device state
  acer-wmi: Only update rfkill status for associated hotkey events

13 years agoMerge branch 'movieboard' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...
Linus Torvalds [Mon, 11 Jul 2011 19:46:39 +0000 (12:46 -0700)]
Merge branch 'movieboard' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6

* 'movieboard' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: ohci: do not bind to Pinnacle cards, avert panic

13 years agoath5k: Add missing breaks in switch/case
Joe Perches [Sun, 10 Jul 2011 09:28:26 +0000 (02:28 -0700)]
ath5k: Add missing breaks in switch/case

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoDocumentation/spinlocks.txt: Remove reference to sti()/cli()
Muthu Kumar [Mon, 11 Jul 2011 18:04:58 +0000 (11:04 -0700)]
Documentation/spinlocks.txt: Remove reference to sti()/cli()

Since we removed sti()/cli() and related, how about removing it from
Documentation/spinlocks.txt?

Signed-off-by: Muthukumar R <muthur@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agocifs: drop spinlock before calling cifs_put_tlink
Jeff Layton [Mon, 11 Jul 2011 14:16:34 +0000 (10:16 -0400)]
cifs: drop spinlock before calling cifs_put_tlink

...as that function can sleep.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agohp-wmi: fix use after free
Eric Dumazet [Mon, 11 Jul 2011 10:22:21 +0000 (12:22 +0200)]
hp-wmi: fix use after free

[  191.310008] WARNING: kmemcheck: Caught 32-bit read from freed memory (f0d25f14)
[  191.310011] c056d2f088000000105fd2f00000000050415353040000000000000000000000
[  191.310020]  i i i i f f f f f f f f f f f f f f f f f f f f f f f f f f f f
[  191.310027]                                          ^
[  191.310029]
[  191.310032] Pid: 737, comm: modprobe Not tainted 3.0.0-rc5+ #268 Hewlett-Packard HP Compaq 6005 Pro SFF PC/3047h
[  191.310036] EIP: 0060:[<f80b3104>] EFLAGS: 00010286 CPU: 0
[  191.310039] EIP is at hp_wmi_perform_query+0x104/0x150 [hp_wmi]
[  191.310041] EAX: f0d25601 EBX: f0d25f00 ECX: 000121cf EDX: 000121ce
[  191.310043] ESI: f0d25f10 EDI: f0f97ea8 EBP: f0f97ec4 ESP: c173f34c
[  191.310045]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[  191.310046] CR0: 8005003b CR2: f540c000 CR3: 30f30000 CR4: 000006d0
[  191.310048] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[  191.310050] DR6: ffff4ff0 DR7: 00000400
[  191.310051]  [<f80b317b>] hp_wmi_dock_state+0x2b/0x40 [hp_wmi]
[  191.310054]  [<f80b6093>] hp_wmi_init+0x93/0x1a8 [hp_wmi]
[  191.310057]  [<c10011f0>] do_one_initcall+0x30/0x170
[  191.310061]  [<c107ab9f>] sys_init_module+0xef/0x1a60
[  191.310064]  [<c149f998>] sysenter_do_call+0x12/0x28
[  191.310067]  [<ffffffff>] 0xffffffff

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
13 years agodell-laptop - using buffer without mutex_lock
Jose Alonso [Sun, 10 Jul 2011 18:46:51 +0000 (15:46 -0300)]
dell-laptop - using buffer without mutex_lock

Using buffer->output[1] without mutex_lock()

Signed-off-by: Jose Alonso <joalonsof@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
13 years agoRevert: "dell-laptop: Toggle the unsupported hardware killswitch"
Keng-Yu Lin [Mon, 27 Jun 2011 10:19:03 +0000 (11:19 +0100)]
Revert: "dell-laptop: Toggle the unsupported hardware killswitch"

This reverts commit a3d77411e8b2ad661958c1fbee65beb476ec6d70,

as it causes a mess in the wireless rfkill status on some models.
It is probably a bad idea to toggle the rfkill for all dell models
without the respect to the claim that it is hardware-controlled.

Cc: stable@kernel.org
Signed-off-by: Keng-Yu Lin <kengyu@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
13 years agoPM: Reintroduce dropped call to check_wakeup_irqs
Colin Cross [Mon, 11 Jul 2011 08:51:49 +0000 (10:51 +0200)]
PM: Reintroduce dropped call to check_wakeup_irqs

Patch 2e711c04dbbf7a7732a3f7073b1fc285d12b369d
(PM: Remove sysdev suspend, resume and shutdown operations)
deleted sysdev_suspend(), which was being relied on to call
check_wakeup_irqs() in suspend.  If check_wakeup_irqs() is not
called, wake interrupts that are pending when suspend is
entered may be lost.  It also breaks IRQCHIP_MASK_ON_SUSPEND,
which is handled in check_wakeup_irqs().

This patch adds a call to check_wakeup_irqs() in syscore_suspend(),
similar to what was deleted in sysdev_suspend().

Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
13 years agopcmcia: pxa2xx/vpac270: free gpios on exist rather than requesting
Jonathan Cameron [Mon, 6 Jun 2011 14:24:13 +0000 (15:24 +0100)]
pcmcia: pxa2xx/vpac270: free gpios on exist rather than requesting

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
13 years agoARM: pxa/raumfeld: fix device name for codec ak4104
Daniel Mack [Wed, 25 May 2011 11:37:33 +0000 (13:37 +0200)]
ARM: pxa/raumfeld: fix device name for codec ak4104

In commit f0fba2ad (ASoC: multi-component - ASoC Multi-Component
Support), the name of the ak4104 codec driver was changed without
amending the platform code which uses it as well.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
13 years agoARM: pxa/raumfeld: display initialisation fixes
Sven Neumann [Wed, 25 May 2011 11:37:32 +0000 (13:37 +0200)]
ARM: pxa/raumfeld: display initialisation fixes

The display requires some milliseconds between GPIO_TFT_VA_EN
and GPIO_DISPLAY_ENABLE. Reorder initialisation to comply with
the display spec.

Also tune timings for better compliance with the spec.

Signed-off-by: Sven Neumann <s.neumann@raumfeld.com>
Acked-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
13 years agoARM: pxa/raumfeld: adapt to upcoming hardware change
Sven Neumann [Wed, 25 May 2011 11:37:31 +0000 (13:37 +0200)]
ARM: pxa/raumfeld: adapt to upcoming hardware change

The backlight control is going to change back to PWM in the
upcoming Raumfeld Controller hardware revision.

Signed-off-by: Sven Neumann <s.neumann@raumfeld.com>
Acked-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
13 years agoARM: pxa: fix gpio_to_chip() clash with gpiolib namespace
Linus Walleij [Mon, 13 Jun 2011 08:42:19 +0000 (10:42 +0200)]
ARM: pxa: fix gpio_to_chip() clash with gpiolib namespace

The PXA platform code has a static inline helper called
gpio_to_chip which clashes with the gpiolib namespace if we
try to expose the function with the same name from gpiolib,
and it's still confusing even if we don't do that. So rename
it to gpio_to_pxachip().

Reported-by: H Hartley Sweeten <hartleys@visionengravers.com>
Cc: Eric Miao <eric.miao@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
13 years ago[CPUFREQ] fix cpumask memory leak in acpi-cpufreq on cpu hotplug.
Luming Yu [Fri, 8 Jul 2011 20:37:44 +0000 (16:37 -0400)]
[CPUFREQ] fix cpumask memory leak in acpi-cpufreq on cpu hotplug.

I came across a memory leak during a cyclic cpu-online-offline test.

Signed-off-by: Yu Luming <luming.yu@intel.com>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
13 years agoMerge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groec...
Linus Torvalds [Sun, 10 Jul 2011 17:24:47 +0000 (10:24 -0700)]
Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging:
  hwmon: (pmbus) Improve auto-detection of temperature status register
  hwmon: (lm95241) Fix negative temperature results
  hwmon: (lm95241) Fix chip detection code

13 years agohwmon: (pmbus) Improve auto-detection of temperature status register
Guenter Roeck [Sun, 3 Jul 2011 20:08:03 +0000 (13:08 -0700)]
hwmon: (pmbus) Improve auto-detection of temperature status register

It is possible that a PMBus device supports the READ_TEMPERATURE2 and/or
READ_TEMPERATURE3 registers but does not support READ_TEMPERATURE1.
Improve temperature status register detection to address this condition.

Reported-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org # 2.6.39+
13 years agohwmon: (lm95241) Fix negative temperature results
Guenter Roeck [Thu, 30 Jun 2011 09:09:37 +0000 (02:09 -0700)]
hwmon: (lm95241) Fix negative temperature results

Negative temperatures were returned in degrees C instead of milli-Degrees C.
Also, negative temperatures were reported for remote temperature sensors even
if the chip was configured for positive-only results.

Fix by detecting temperature modes, and by treating negative temperatures
similar to positive temperatures, with appropriate sign extension.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org # 2.6.30+
13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Sun, 10 Jul 2011 14:29:22 +0000 (07:29 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - Fix a copmile warning
  ASoC: ak4642: fixup snd_soc_update_bits mask for PW_MGMT2
  ALSA: hda - Change all ADCs for dual-adc switching mode for Realtek
  ASoC: Manage WM8731 ACTIVE bit as a supply widget
  ASoC: Don't set invalid name string to snd_card->driver field
  ASoC: Ensure we delay long enough for WM8994 FLL to lock when starting
  ASoC: Tegra: I2S: Ensure clock is enabled when writing regs
  ASoC: Fix Blackfin I2S _pointer() implementation return in bounds values
  ASoC: tlv320aic3x: Do soft reset to codec when going to bias off state
  ASoC: tlv320aic3x: Don't sync first two registers from register cache
  audio: tlv320aic26: fix PLL register configuration

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...
Linus Torvalds [Sun, 10 Jul 2011 14:28:51 +0000 (07:28 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: conditional resource-reallocation through kernel parameter pci=realloc

13 years agoMerge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Sun, 10 Jul 2011 14:28:30 +0000 (07:28 -0700)]
Merge branch 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm

* 'fixes' of master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: 6994/1: smp_twd: Fix typo in 'twd_timer_rate' printing
  ARM: 6987/1: l2x0: fix disabling function to avoid deadlock
  ARM: 6966/1: ep93xx: fix inverted RTS/DTR signals on uart1
  ARM: 6980/1: mmci: use StartBitErr to detect bad connections
  ARM: 6979/1: mach-vt8500: add forgotten irq_data conversion
  ARM: move memory layout sanity checking before meminfo initialization
  ARM: 6990/1: MAINTAINERS: add entry for ARM PMU profiling and debugging
  ARM: 6989/1: perf: do not start the PMU when no events are present
  ARM: dmabounce: fix map_single() error return value

13 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Sun, 10 Jul 2011 14:27:45 +0000 (07:27 -0700)]
Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/radeon/kms: clean up multiple crtc handling for evergreen+ (v2)

13 years agofirewire: ohci: do not bind to Pinnacle cards, avert panic
Stefan Richter [Sat, 9 Jul 2011 22:23:03 +0000 (00:23 +0200)]
firewire: ohci: do not bind to Pinnacle cards, avert panic

When firewire-ohci is bound to a Pinnacle MovieBoard, eventually a
"Register access failure" is logged and an interrupt storm or a kernel
panic happens.  https://bugzilla.kernel.org/show_bug.cgi?id=36622

Until this is sorted out (if that is going to succeed at all), let's
just prevent firewire-ohci from touching these devices.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: <stable@kernel.org>
13 years agocifs: fix expand_dfs_referral
Jeff Layton [Wed, 6 Jul 2011 12:10:39 +0000 (08:10 -0400)]
cifs: fix expand_dfs_referral

Regression introduced in commit 724d9f1cfba.

Prior to that, expand_dfs_referral would regenerate the mount data string
and then call cifs_parse_mount_options to re-parse it (klunky, but it
worked). The above commit moved cifs_parse_mount_options out of cifs_mount,
so the re-parsing of the new mount options no longer occurred. Fix it by
making expand_dfs_referral re-parse the mount options.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agocifs: move bdi_setup_and_register outside of CONFIG_CIFS_DFS_UPCALL
Jeff Layton [Sat, 9 Jul 2011 16:21:07 +0000 (12:21 -0400)]
cifs: move bdi_setup_and_register outside of CONFIG_CIFS_DFS_UPCALL

This needs to be done regardless of whether that KConfig option is set
or not.

Reported-by: Sven-Haegar Koch <haegar@sdinet.de>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agoMerge branch 'fix/asoc' into for-linus
Takashi Iwai [Sat, 9 Jul 2011 09:56:43 +0000 (11:56 +0200)]
Merge branch 'fix/asoc' into for-linus

13 years agoALSA: hda - Fix a copmile warning
Takashi Iwai [Sat, 9 Jul 2011 09:55:28 +0000 (11:55 +0200)]
ALSA: hda - Fix a copmile warning

It's harmless but annyoing.
  sound/pci/hda/patch_realtek.c: In function ‘alc_cap_getput_caller’:
  sound/pci/hda/patch_realtek.c:2722:9: warning: ‘err’ may be used uninitialized in this function

Signed-off-by: Takashi Iwai <tiwai@suse.de>
13 years agoMerge branch 'for-3.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound...
Takashi Iwai [Sat, 9 Jul 2011 07:44:09 +0000 (09:44 +0200)]
Merge branch 'for-3.0' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound-2.6 into fix/asoc

13 years agoMerge branch 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 9 Jul 2011 06:28:23 +0000 (23:28 -0700)]
Merge branch 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung

* 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: S3C2440: fix section mismatch on mini2440
  ARM: S3C24XX: drop return codes in void function of dma.c
  ARM: S3C24XX: don't use uninitialized variable in dma.c
  ARM: EXYNOS4: Set appropriate I2C device variant
  ARM: S5PC100: Fix for compilation error
  spi/s3c64xx: Bug fix for SPI with different FIFO level
  ARM: SAMSUNG: Add tx_st_done variable
  ARM: EXYNOS4: Address a section mismatch w/ suspend issue.
  ARM: S5P: Fix bug on init of PWMTimers for HRTimer
  ARM: SAMSUNG: header file revised to prevent declaring duplicated
  ARM: EXYNOS4: fix improper gpio configuration
  ARM: EXYNOS4: Fix card detection for sdhci 0 and 2

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6
Linus Torvalds [Sat, 9 Jul 2011 06:26:28 +0000 (23:26 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
  regulator: max8997: Fix setting inappropriate value for ramp_delay variable
  regulator: db8500-prcmu: small fixes
  regulator: max8997: remove dependency on platform_data pointer
  regulator: MAX8997: Fix for divide by zero error
  regulator: max8952 - fix wrong gpio valid check

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs...
Linus Torvalds [Sat, 9 Jul 2011 06:25:45 +0000 (23:25 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  btrfs: fix oops when doing space balance
  Btrfs: don't panic if we get an error while balancing V2
  btrfs: add missing options displayed in mount output

13 years agoMAINTAINERS: update Bjorn Helgaas's email address
Bjorn Helgaas [Fri, 8 Jul 2011 22:39:48 +0000 (15:39 -0700)]
MAINTAINERS: update Bjorn Helgaas's email address

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrivers/leds/leds-pca9532.c: change driver name to be unique
Wolfram Sang [Fri, 8 Jul 2011 22:39:46 +0000 (15:39 -0700)]
drivers/leds/leds-pca9532.c: change driver name to be unique

This driver handles the variants pca9530-pca9533, so it chose the name
"pca953x".  However, there is a gpio driver which decided on the same
name.  As a result, those two can't be loaded at the same time.  Add a
subsystem prefix to make the driver name unique.  Device matching will not
suffer, because both are I2C drivers which match using a
i2c_device_id-table which is not altered.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Jean Delvare <khali@linux-fr.org>
Cc: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomm/nommu.c: fix remap_pfn_range()
Bob Liu [Fri, 8 Jul 2011 22:39:46 +0000 (15:39 -0700)]
mm/nommu.c: fix remap_pfn_range()

remap_pfn_range() means map physical address pfn<<PAGE_SHIFT to user addr.

For nommu arch it's implemented by vma->vm_start = pfn << PAGE_SHIFT which
is wrong acroding the original meaning of this function.  And some driver
developer using remap_pfn_range() with correct parameter will get
unexpected result because vm_start is changed.  It should be implementd
like addr = pfn << PAGE_SHIFT but which is meanless on nommu arch, this
patch just make it simply return.

Parameter name and setting of vma->vm_flags also be fixed.

Signed-off-by: Bob Liu <lliubbo@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: David Howells <dhowells@redhat.com>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Bob Liu <lliubbo@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 agow1: ds1wm: add a reset recovery parameter
Jean-François Dagenais [Fri, 8 Jul 2011 22:39:44 +0000 (15:39 -0700)]
w1: ds1wm: add a reset recovery parameter

This fixes a regression in 3.0 reported by Paul Parsons regarding the
removal of the msleep(1) in the ds1wm_reset() function:

: The linux-3.0-rc4 DS1WM 1-wire driver is logging "bus error, retrying"
: error messages on an HP iPAQ hx4700 PDA (XScale-PXA270):
:
: <snip>
: Driver for 1-wire Dallas network protocol.
: DS1WM w1 busmaster driver - (c) 2004 Szabolcs Gyurko
: 1-Wire driver for the DS2760 battery monitor  chip  - (c) 2004-2005, Szabolcs Gyurko
: ds1wm ds1wm: pass: 1 bus error, retrying
: ds1wm ds1wm: pass: 2 bus error, retrying
: ds1wm ds1wm: pass: 3 bus error, retrying
: ds1wm ds1wm: pass: 4 bus error, retrying
: ds1wm ds1wm: pass: 5 bus error, retrying
: ...
:
: The visible result is that the battery charging LED is erratic; sometimes
: it works, mostly it doesn't.
:
: The linux-2.6.39 DS1WM 1-wire driver worked OK.  I haven't tried 3.0-rc1,
: 3.0-rc2, or 3.0-rc3.

This sleep should not be required on normal circuitry provided the
pull-ups on the bus are correctly adapted to the slaves.  Unfortunately,
this is not always the case.  The sleep is restored but as a parameter to
the probe function in the pdata.

[akpm@linux-foundation.org: coding-style fixes]
Reported-by: Paul Parsons <lost.distance@yahoo.com>
Tested-by: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Jean-François Dagenais <dagenaisj@sonatest.com>
Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomemcg: fix numa scan information update to be triggered by memory event
KAMEZAWA Hiroyuki [Fri, 8 Jul 2011 22:39:43 +0000 (15:39 -0700)]
memcg: fix numa scan information update to be triggered by memory event

commit 889976dbcb12 ("memcg: reclaim memory from nodes in round-robin
order") adds an numa node round-robin for memcg.  But the information is
updated once per 10sec.

This patch changes the update trigger from jiffies to memcg's event count.
 After this patch, numa scan information will be updated when we see 1024
events of pagein/pageout under a memcg.

[akpm@linux-foundation.org: attempt to repair code layout]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Ying Han <yinghan@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: 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 agomemcg: fix reclaimable lru check in memcg
KAMEZAWA Hiroyuki [Fri, 8 Jul 2011 22:39:42 +0000 (15:39 -0700)]
memcg: fix reclaimable lru check in memcg

Now, in mem_cgroup_hierarchical_reclaim(), mem_cgroup_local_usage() is
used for checking whether the memcg contains reclaimable pages or not.  If
no pages in it, the routine skips it.

But, mem_cgroup_local_usage() contains Unevictable pages and cannot handle
"noswap" condition correctly.  This doesn't work on a swapless system.

This patch adds test_mem_cgroup_reclaimable() and replaces
mem_cgroup_local_usage().  test_mem_cgroup_reclaimable() see LRU counter
and returns correct answer to the caller.  And this new function has
"noswap" argument and can see only FILE LRU if necessary.

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix kerneldoc layout]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Ying Han <yinghan@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: 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 agomm: __tlb_remove_page() check the correct batch
Shaohua Li [Fri, 8 Jul 2011 22:39:41 +0000 (15:39 -0700)]
mm: __tlb_remove_page() check the correct batch

__tlb_remove_page() switches to a new batch page, but still checks space
in the old batch.  This check always fails, and causes a forced tlb flush.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomm: vmscan: only read new_classzone_idx from pgdat when reclaiming successfully
Mel Gorman [Fri, 8 Jul 2011 22:39:40 +0000 (15:39 -0700)]
mm: vmscan: only read new_classzone_idx from pgdat when reclaiming successfully

During allocator-intensive workloads, kswapd will be woken frequently
causing free memory to oscillate between the high and min watermark.  This
is expected behaviour.  Unfortunately, if the highest zone is small, a
problem occurs.

When balance_pgdat() returns, it may be at a lower classzone_idx than it
started because the highest zone was unreclaimable.  Before checking if it
should go to sleep though, it checks pgdat->classzone_idx which when there
is no other activity will be MAX_NR_ZONES-1.  It interprets this as it has
been woken up while reclaiming, skips scheduling and reclaims again.  As
there is no useful reclaim work to do, it enters into a loop of shrinking
slab consuming loads of CPU until the highest zone becomes reclaimable for
a long period of time.

There are two problems here.  1) If the returned classzone or order is
lower, it'll continue reclaiming without scheduling.  2) if the highest
zone was marked unreclaimable but balance_pgdat() returns immediately at
DEF_PRIORITY, the new lower classzone is not communicated back to kswapd()
for sleeping.

This patch does two things that are related.  If the end_zone is
unreclaimable, this information is communicated back.  Second, if the
classzone or order was reduced due to failing to reclaim, new information
is not read from pgdat and instead an attempt is made to go to sleep.  Due
to this, it is also necessary that pgdat->classzone_idx be initialised
each time to pgdat->nr_zones - 1 to avoid re-reads being interpreted as
wakeups.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Reported-by: Pádraig Brady <P@draigBrady.com>
Tested-by: Pádraig Brady <P@draigBrady.com>
Tested-by: Andrew Lutomirski <luto@mit.edu>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
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: evaluate the watermarks against the correct classzone
Mel Gorman [Fri, 8 Jul 2011 22:39:39 +0000 (15:39 -0700)]
mm: vmscan: evaluate the watermarks against the correct classzone

When deciding if kswapd is sleeping prematurely, the classzone is taken
into account but this is different to what balance_pgdat() and the
allocator are doing.  Specifically, the DMA zone will be checked based on
the classzone used when waking kswapd which could be for a GFP_KERNEL or
GFP_HIGHMEM request.  The lowmem reserve limit kicks in, the watermark is
not met and kswapd thinks it's sleeping prematurely keeping kswapd awake in
error.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Reported-by: Pádraig Brady <P@draigBrady.com>
Tested-by: Pádraig Brady <P@draigBrady.com>
Tested-by: Andrew Lutomirski <luto@mit.edu>
Acked-by: Rik van Riel <riel@redhat.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
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: do not apply pressure to slab if we are not applying pressure to zone
Mel Gorman [Fri, 8 Jul 2011 22:39:38 +0000 (15:39 -0700)]
mm: vmscan: do not apply pressure to slab if we are not applying pressure to zone

During allocator-intensive workloads, kswapd will be woken frequently
causing free memory to oscillate between the high and min watermark.  This
is expected behaviour.

When kswapd applies pressure to zones during node balancing, it checks if
the zone is above a high+balance_gap threshold.  If it is, it does not
apply pressure but it unconditionally shrinks slab on a global basis which
is excessive.  In the event kswapd is being kept awake due to a high small
unreclaimable zone, it skips zone shrinking but still calls shrink_slab().

Once pressure has been applied, the check for zone being unreclaimable is
being made before the check is made if all_unreclaimable should be set.
This miss of unreclaimable can cause has_under_min_watermark_zone to be
set due to an unreclaimable zone preventing kswapd backing off on
congestion_wait().

Signed-off-by: Mel Gorman <mgorman@suse.de>
Reported-by: Pádraig Brady <P@draigBrady.com>
Tested-by: Pádraig Brady <P@draigBrady.com>
Tested-by: Andrew Lutomirski <luto@mit.edu>
Acked-by: Rik van Riel <riel@redhat.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
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: correct check for kswapd sleeping in sleeping_prematurely
Mel Gorman [Fri, 8 Jul 2011 22:39:36 +0000 (15:39 -0700)]
mm: vmscan: correct check for kswapd sleeping in sleeping_prematurely

During allocator-intensive workloads, kswapd will be woken frequently
causing free memory to oscillate between the high and min watermark.  This
is expected behaviour.  Unfortunately, if the highest zone is small, a
problem occurs.

This seems to happen most with recent sandybridge laptops but it's
probably a co-incidence as some of these laptops just happen to have a
small Normal zone.  The reproduction case is almost always during copying
large files that kswapd pegs at 100% CPU until the file is deleted or
cache is dropped.

The problem is mostly down to sleeping_prematurely() keeping kswapd awake
when the highest zone is small and unreclaimable and compounded by the
fact we shrink slabs even when not shrinking zones causing a lot of time
to be spent in shrinkers and a lot of memory to be reclaimed.

Patch 1 corrects sleeping_prematurely to check the zones matching
the classzone_idx instead of all zones.

Patch 2 avoids shrinking slab when we are not shrinking a zone.

Patch 3 notes that sleeping_prematurely is checking lower zones against
a high classzone which is not what allocators or balance_pgdat()
is doing leading to an artifical belief that kswapd should be
still awake.

Patch 4 notes that when balance_pgdat() gives up on a high zone that the
decision is not communicated to sleeping_prematurely()

This problem affects 2.6.38.8 for certain and is expected to affect 2.6.39
and 3.0-rc4 as well.  If accepted, they need to go to -stable to be picked
up by distros and this series is against 3.0-rc4.  I've cc'd people that
reported similar problems recently to see if they still suffer from the
problem and if this fixes it.

This patch: correct the check for kswapd sleeping in sleeping_prematurely()

During allocator-intensive workloads, kswapd will be woken frequently
causing free memory to oscillate between the high and min watermark.  This
is expected behaviour.

A problem occurs if the highest zone is small.  balance_pgdat() only
considers unreclaimable zones when priority is DEF_PRIORITY but
sleeping_prematurely considers all zones.  It's possible for this sequence
to occur

  1. kswapd wakes up and enters balance_pgdat()
  2. At DEF_PRIORITY, marks highest zone unreclaimable
  3. At DEF_PRIORITY-1, ignores highest zone setting end_zone
  4. At DEF_PRIORITY-1, calls shrink_slab freeing memory from
        highest zone, clearing all_unreclaimable. Highest zone
        is still unbalanced
  5. kswapd returns and calls sleeping_prematurely
  6. sleeping_prematurely looks at *all* zones, not just the ones
     being considered by balance_pgdat. The highest small zone
     has all_unreclaimable cleared but the zone is not
     balanced. all_zones_ok is false so kswapd stays awake

This patch corrects the behaviour of sleeping_prematurely to check the
zones balance_pgdat() checked.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Reported-by: Pádraig Brady <P@draigBrady.com>
Tested-by: Pádraig Brady <P@draigBrady.com>
Tested-by: Andrew Lutomirski <luto@mit.edu>
Acked-by: Rik van Riel <riel@redhat.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agohwmon: (lm95241) Fix chip detection code
Guenter Roeck [Mon, 27 Jun 2011 18:22:46 +0000 (11:22 -0700)]
hwmon: (lm95241) Fix chip detection code

The LM95241 driver accepts every chip ID equal to or larger than 0xA4 as its
own, and other chips such as LM95245 use chip IDs in the accepted ID range.
This results in false chip detection.

Fix problem by accepting only the known LM95241 chip ID.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org # 2.6.30+
13 years agoPCI: conditional resource-reallocation through kernel parameter pci=realloc
Ram Pai [Thu, 7 Jul 2011 18:19:10 +0000 (11:19 -0700)]
PCI: conditional resource-reallocation through kernel parameter pci=realloc

Multiple attempts to dynamically reallocate pci resources have
unfortunately lead to regressions. Though we continue to fix the
regressions and fine tune the dynamic-reallocation behavior, we have not
reached a acceptable state yet.

This patch provides a interim solution. It disables dynamic reallocation
by default, but adds the ability to enable it through pci=realloc kernel
command line parameter.

Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
13 years agoregulator: max8997: Fix setting inappropriate value for ramp_delay variable
Donggeun Kim [Thu, 7 Jul 2011 07:51:56 +0000 (16:51 +0900)]
regulator: max8997: Fix setting inappropriate value for ramp_delay variable

The ramp_delay variable can be set lower than the desired value.
This patch fixes it.

Signed-off-by: Donggeun Kim <dg77.kim@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: KyungMin Park <kyungmin.park@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
13 years agoregulator: db8500-prcmu: small fixes
Axel Lin [Wed, 6 Jul 2011 03:41:12 +0000 (11:41 +0800)]
regulator: db8500-prcmu: small fixes

Small cleanups for better readability.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
13 years agoregulator: max8997: remove dependency on platform_data pointer
MyungJoo Ham [Mon, 20 Jun 2011 08:30:17 +0000 (17:30 +0900)]
regulator: max8997: remove dependency on platform_data pointer

The platform_data (pdata) may be pointing to __initdata section, which
may be free'd from the memory. The dependency on pdata in non-init
functions is removed in this patch to allow platform to declare
__initdata for platform data.

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
13 years agoregulator: MAX8997: Fix for divide by zero error
Tushar Behera [Tue, 21 Jun 2011 03:38:59 +0000 (09:08 +0530)]
regulator: MAX8997: Fix for divide by zero error

Currently, ramp_delay variable is used uninitialzed in
max8997_set_voltage_ldobuck which gets called through
regulator_register calls.

To fix the problem, in max8997_pmic_probe, ramp_delay initialization
code is moved before calls to regulator_register.

Cc: Liam Girdwood <lrg@ti.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: MyungJoo Ham <myungjoo.ham@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
13 years agoregulator: max8952 - fix wrong gpio valid check
Jonghwan Choi [Wed, 15 Jun 2011 08:54:12 +0000 (17:54 +0900)]
regulator: max8952 - fix wrong gpio valid check

Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
13 years agodrm/radeon/kms: clean up multiple crtc handling for evergreen+ (v2)
Alex Deucher [Fri, 8 Jul 2011 15:44:56 +0000 (11:44 -0400)]
drm/radeon/kms: clean up multiple crtc handling for evergreen+ (v2)

evergreen+ asics have 2-6 crtcs.  Don't access crtc registers
for crtc regs that don't exist as they have very high latency
and may cause problems on some asics.  The previous code missed
a few cases and was not fine grained enough (missed the 4 crtc
case for example).

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=38800

v2: fix typo noticed by Chris Bandy <cbandy@jbandy.com>

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Reviewed-by: Michel Dänzer <michel@daenzer.net>
Tested-by: Simon Farnsworth <simon.farnsworth@onelan.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agoMerge branch 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6
Linus Torvalds [Fri, 8 Jul 2011 16:01:11 +0000 (09:01 -0700)]
Merge branch 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6

* 'gpio/merge' of git://git.secretlab.ca/git/linux-2.6:
  gpio/langwell_gpio: ack the correct bit for langwell gpio interrupts

13 years agoMerge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
Linus Torvalds [Fri, 8 Jul 2011 16:00:51 +0000 (09:00 -0700)]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: unpin stale inodes directly in IOP_COMMITTED

13 years agoMerge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 8 Jul 2011 16:00:02 +0000 (09:00 -0700)]
Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/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:
  omap: drop __initdata tags from static struct platform_device declarations

13 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Fri, 8 Jul 2011 15:59:39 +0000 (08:59 -0700)]
Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/kms: allow drm_mode_group with no objects
  drm/radeon/kms: free ib pool on module unloading
  drm/radeon/kms: fix typo in evergreen disp int status register
  drm/radeon/kms: fix typo in IH_CNTL swap bitfield

13 years agogpio/langwell_gpio: ack the correct bit for langwell gpio interrupts
Mathias Nyman [Fri, 8 Jul 2011 09:02:18 +0000 (10:02 +0100)]
gpio/langwell_gpio: ack the correct bit for langwell gpio interrupts

The wrong bit was masked when acking langwell gpio interrupts.

Reason for maskig the wrong bit was probably because__ffs() and ffs() functions
return bit indexes differently (0..31 vs 1..32)

This fixes langwell based devices from hanging when a gpio interrupt is
triggered and undoes the breakage which occurred in change set
732063b92bb727b27e61580ce278dddefe31c6ad

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
13 years agoARM: S3C2440: fix section mismatch on mini2440
Wolfram Sang [Fri, 8 Jul 2011 09:16:56 +0000 (18:16 +0900)]
ARM: S3C2440: fix section mismatch on mini2440

If mini2440_init() is in __init, mini2440_parse_features() should also
be in __init. Fixes:

(.text+0x9adc): Section mismatch in reference from the function mini2440_parse_features.clone.0() to the
(unknown reference) .init.data:(unknown)
The function mini2440_parse_features.clone.0() references the (unknown reference) __initdata (unknown).

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Michel Pollet <buserror@gmail.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
13 years agoARM: S3C24XX: drop return codes in void function of dma.c
Wolfram Sang [Fri, 8 Jul 2011 05:33:02 +0000 (14:33 +0900)]
ARM: S3C24XX: drop return codes in void function of dma.c

Commit bb072c3c (ARM / Samsung: Use struct syscore_ops for "core" power
management) turned s3c2410_dma_resume_chan() from int to void. So, drop
the actual return values, too. Fixes:

arch/arm/plat-s3c24xx/dma.c: In function 's3c2410_dma_resume_chan':
arch/arm/plat-s3c24xx/dma.c:1238:3: warning: 'return' with a value, in function returning void
arch/arm/plat-s3c24xx/dma.c:1250:2: warning: 'return' with a value, in function returning void

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
13 years agoARM: S3C24XX: don't use uninitialized variable in dma.c
Wolfram Sang [Fri, 8 Jul 2011 05:33:02 +0000 (14:33 +0900)]
ARM: S3C24XX: don't use uninitialized variable in dma.c

Commit 8970ef47 (S3C24XX: Remove hardware specific registers from DMA
calls) removed the parameter dcon in s3c2410_dma_config() and calculates
it on its own. So the debug-output for the old parameter can go, too.
Fixes:

arch/arm/plat-s3c24xx/dma.c: In function 's3c2410_dma_config':
arch/arm/plat-s3c24xx/dma.c:1030:2: warning: 'dcon' is used uninitialized in this function

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
13 years agocifs: factor smb_vol allocation out of cifs_setup_volume_info
Jeff Layton [Wed, 6 Jul 2011 12:10:38 +0000 (08:10 -0400)]
cifs: factor smb_vol allocation out of cifs_setup_volume_info

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agoMerge branch 'for-30-rc5/all-i2c' of git://git.fluff.org/bjdooks/linux
Linus Torvalds [Thu, 7 Jul 2011 23:29:29 +0000 (16:29 -0700)]
Merge branch 'for-30-rc5/all-i2c' of git://git.fluff.org/bjdooks/linux

* 'for-30-rc5/all-i2c' of git://git.fluff.org/bjdooks/linux:
  i2c-bfin-twi: abort transfer is MEM bit is reset unexpectedly
  i2c-s3c2410: Remove useless break code
  i2c-s3c2410: Fix typo 'i2s' -> 'i2c'
  i2c: tegra: Assign unused slave address

13 years agodrm/i915: Enable GPU reset on Ivybridge.
Kenneth Graunke [Thu, 7 Jul 2011 22:33:26 +0000 (15:33 -0700)]
drm/i915: Enable GPU reset on Ivybridge.

According to the hardware documentation, GDRST is exactly the same as on
Sandybridge.  So simply enable the existing code.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
13 years agoMerge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Thu, 7 Jul 2011 22:10:33 +0000 (15:10 -0700)]
Merge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  USB: additional regression fix for device removal

13 years agodrm/i915/dp: manage sink power state if possible
Jesse Barnes [Thu, 7 Jul 2011 18:11:03 +0000 (11:11 -0700)]
drm/i915/dp: manage sink power state if possible

On sinks with a DPCD rev of 1.1 or greater, we can send sink power
management commands to address 0x600 per section 5.1.5 of the
DisplayPort 1.1a spec.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
13 years agodrm/i915/dp: consolidate AUX retry code
Jesse Barnes [Thu, 7 Jul 2011 18:11:02 +0000 (11:11 -0700)]
drm/i915/dp: consolidate AUX retry code

When checking link status during a hot plug event or detecting sink
presence, we need to retry 3 times per the spec (section 9.1 of the 1.1a
DisplayPort spec).  Consolidate the retry code into a
native_aux_read_retry function for use by get_link_status and _detect.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
13 years agodrm/i915/dp: remove DPMS mode tracking from DP
Jesse Barnes [Thu, 7 Jul 2011 18:11:01 +0000 (11:11 -0700)]
drm/i915/dp: remove DPMS mode tracking from DP

We currently use this when a hot plug event is received, only checking
the link status and re-training if we had previously configured a link.
However if we want to preserve the DP configuration across both hot plug
and DPMS events (which we do for userspace apps that don't respond to
hot plug uevents), we need to unconditionally check the link and try to
bring it up on hot plug.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
13 years agodrm/i915/dp: try to read receiver capabilities 3 times when detecting
Jesse Barnes [Thu, 7 Jul 2011 18:11:00 +0000 (11:11 -0700)]
drm/i915/dp: try to read receiver capabilities 3 times when detecting

If ->detect is called too soon after a hot plug event, the sink may not
be ready yet.  So try up to 3 times with 1ms sleeps in between tries to
get the data (spec dictates that receivers must be ready to respond within
1ms and that sources should try 3 times).

See section 9.1 of the 1.1a DisplayPort spec.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
13 years agodrm/i915/dp: read more receiver capability bits on hotplug
Jesse Barnes [Thu, 7 Jul 2011 18:10:59 +0000 (11:10 -0700)]
drm/i915/dp: read more receiver capability bits on hotplug

When a hotplug event is received, we need to check the receiver cap bits
in case they've changed (as they might with a hub or chain config).

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
13 years agodrm/i915/dp: use DP DPCD defines when looking at DPCD values
Jesse Barnes [Thu, 7 Jul 2011 18:10:58 +0000 (11:10 -0700)]
drm/i915/dp: use DP DPCD defines when looking at DPCD values

Makes it easier to search for DP related constants.

Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
13 years agodrm/i915/dp: retry link status read 3 times on failure
Jesse Barnes [Thu, 7 Jul 2011 18:10:57 +0000 (11:10 -0700)]
drm/i915/dp: retry link status read 3 times on failure

Especially after a hotplug or power status change, the sink may not
reply immediately to a link status query.  So retry 3 times per the spec
to really make sure nothing is there.

See section 9.1 of the 1.1a DisplayPort spec.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
13 years agoUSB: additional regression fix for device removal
Alan Stern [Wed, 6 Jul 2011 21:03:45 +0000 (17:03 -0400)]
USB: additional regression fix for device removal

Commit e534c5b831c8b8e9f5edee5c8a37753c808b80dc (USB: fix regression
occurring during device removal) didn't go far enough.  It failed to
take into account that when a driver claims multiple interfaces, it may
release them all at the same time.  As a result, some interfaces can
get released before they are unregistered, and we deadlock trying to
acquire the bandwidth_mutex that we already own.

This patch (asl478) handles this case by setting the "unregistering"
flag on all the interfaces before removing any of them.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@kernel.org>
Tested-by: Éric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years ago[media] msp3400: fill in v4l2_tuner based on vt->type field
Hans Verkuil [Sun, 26 Jun 2011 09:16:03 +0000 (06:16 -0300)]
[media] msp3400: fill in v4l2_tuner based on vt->type field

The vt->type field determines how the msp3400 should fill in the
tuner data, not whether the msp3400 is in radio mode or not.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
13 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspe...
Linus Torvalds [Thu, 7 Jul 2011 20:22:41 +0000 (13:22 -0700)]
Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM / Hibernate: Fix free_unnecessary_pages()

13 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Thu, 7 Jul 2011 20:22:26 +0000 (13:22 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

* 'for-linus' of git://git.kernel.dk/linux-block:
  drbd: we should write meta data updates with FLUSH FUA
  drbd: fix limit define, we support 1 PiByte now
  drbd: when receive times out on meta socket, also check last receive time on data socket
  drbd: account bitmap IO during resync as resync-(related-)-io
  drbd: don't cond_resched_lock with IRQs disabled
  drbd: add missing spinlock to bitmap receive
  drbd: Use the correct max_bio_size when creating resync requests
  cfq-iosched: make code consistent
  cfq-iosched: fix a rcu warning