Commit graph

223212 commits

Author SHA1 Message Date
Yuanhan Liu
1398261a2e drm/i915: Add self-refresh support on Sandybridge
Add the support of memory self-refresh on Sandybridge, which is now
support 3 levels of watermarks and the source of the latency values
for watermarks has changed.

On Sandybridge, the LP0 WM value is not hardcoded any more. All the
latency value is now should be extracted from MCHBAR SSKPD register.
And the MCHBAR base address is changed, too.

For the WM values, if any calculated watermark values is larger than
the maximum value that can be programmed into the associated watermark
register, that watermark must be disabled.

Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
[ickle: remove duplicate compute routines and fixup for checkpatch]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-15 11:16:57 +00:00
Chris Wilson
b7f1de289c drm/i915: Wait for vblank before unpinning old fb
Be paranoid and ensure that the vblank has passed and the scanout has
switched to the new fb, before unpinning the old one and possibly
tearing down its PTEs.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-15 10:33:23 +00:00
Chris Wilson
c6df541c00 Revert "drm/i915: Avoid using PIPE_CONTROL on Ironlake"
Restore PIPE_CONTROL once again just for Ironlake, as it appears that
MI_USER_INTERRUPT does not have the same coherency guarantees, that is
on Ironlake the interrupt following a GPU write is not guaranteed to
arrive after the write is coherent from the CPU, as it does on the
other generations.

Reported-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Reported-by: Shuang He <shuang.he@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32402
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-15 10:15:25 +00:00
Chris Wilson
1b894b5924 drm/i915: Pass clock limits down to PLL matcher
As we already know the limits for the hardware clock, pass it down
rather than recomputing them for each match.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-14 20:09:04 +00:00
Chris Wilson
b5ba177d8d drm/i915: Poll for seqno completion if IRQ is disabled
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32288
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-14 12:19:25 +00:00
Chris Wilson
9097eef024 Merge branch 'drm-intel-fixes' into drm-intel-next 2010-12-14 11:34:51 +00:00
Chris Wilson
b13c2b96bf drm/i915/ringbuffer: Make IRQ refcnting atomic
In order to enforce the correct memory barriers for irq get/put, we need
to perform the actual counting using atomic operations.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-14 11:34:46 +00:00
Chris Wilson
71f4566084 agp/intel: Fix missed cached memory flags setting in i965_write_entry()
This fixes regression from a6963596a1,
that missed to set cached memory type in GTT entry.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-14 11:29:23 +00:00
Chris Wilson
8d5203ca62 Merge branch 'drm-intel-fixes' into drm-intel-next 2010-12-09 20:22:04 +00:00
Chris Wilson
63abf3edaf drm/i915/sdvo: Only use the SDVO pin if it is in the valid range
BIOSes. Can't live without them (apparently), definitely can't live with
them.

Reported-by: Ben Gamari <bgamari@gmail.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=24312
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-09 20:20:42 +00:00
Chris Wilson
8fd2685911 drm/i915: Enable RC6 autodownclocking on Sandybridge
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-09 19:46:24 +00:00
Chris Wilson
eb43f4af7e drm/i915: Terminate the FORCE WAKE after we have finished reading
Once we have read the value out of the GT power well, we need to remove
the FORCE WAKE bit to allow the system to auto-power down.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-09 19:46:24 +00:00
Chris Wilson
a8e93126a6 drm/i915/gtt: Clear the cachelines upon resume
Required for my pineview system to not barf after resuming.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-09 19:46:23 +00:00
Chris Wilson
d1c3b177b9 drm/i915: Restore GTT mapping first upon resume
As suggested by Daniel Vetter, this is a safeguard should any of the
registers cause reference to PTE entries.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-09 19:46:23 +00:00
Chris Wilson
4a19d02e0a drm/i915: driver.suspend and .resume are always set
So we can remove the repeated initialisation.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-09 19:46:22 +00:00
Chris Wilson
b8f7ab1788 drm/i915: Mark the user reloc error paths as unlikely
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-09 19:46:22 +00:00
Chris Wilson
67731b87e9 drm/i915: Eliminate drm_gem_object_lookup during relocation
As we provide a list of all objects that will be accessed from the
batchbuffer, we can build a lut of the handles associated with those
objects for this invocation and use that to avoid the overhead of
looking up those objects again for every relocation.

The cost of building and searching a small hash table is much less than
that of acquiring a spinlock, searching a radix tree and manipulating an
atomic refcnt per relocation.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-09 19:46:21 +00:00
Chris Wilson
ff7ea4c040 drm/i915: Re-arm the idle timers if the device is still busy
Don't post a downclocking task if the device is still active when the
idle timer fires. A pathological process could queue up several seconds
worth of processing and then go to sleep, during which time the idle
timer would kick in and downclock the GPU.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-09 19:13:52 +00:00
Chris Wilson
8c0a6bfef1 drm/i915/ringbuffer: Handle wrapping of the autoreported HEAD
If the tail advances beyond the autoreport HEAD value, then we need to
fallback to an uncached read of the HEAD register in order to ascertain
the correct amount of remaining space in the ringbuffer.

Reported-by: Fang, Xun <xunx.fang@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32259
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-09 12:53:19 +00:00
David Flynn
8316f33766 drm/i915/dp: Fix I2C/EDID handling with active DisplayPort to DVI converter
The DisplayPort standard (1.1a) states that:
  The I2C-over-AUX Reply field is valid only when Native AUX CH Reply
  field is AUX_ACK (00). When Native AUX CH Reply field is not 00, then,
  I2C-over-AUX Reply field must be 00 and be ignored.

This fixes broken EDID reading when using an active DisplayPort to
duallink DVI converter.  If the AUX CH replier chooses to defer the
transaction, a short read occurs and erroneous data is returned as
the i2c reply due to a lack of length checking and failure to check
for AUX ACK.

As a result, broken EDIDs can look like:
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f    0123456789abcdef
00: bc bc bc ff bc bc bc ff bc bc bc ac bc bc bc 45    ???.???.???????E
10: bc bc bc 10 bc bc bc 34 bc bc bc ee bc bc bc 4c    ???????4???????L
20: bc bc bc 50 bc bc bc 00 bc bc bc 40 bc bc bc 00    ???P???.???@???.
30: bc bc bc 01 bc bc bc 01 bc bc bc a0 bc bc bc 40    ???????????????@
40: bc bc bc 00 bc bc bc 00 bc bc bc 00 bc bc bc 55    ???.???.???.???U
50: bc bc bc 35 bc bc bc 31 bc bc bc 20 bc bc bc fc    ???5???1??? ????
60: bc bc bc 4c bc bc bc 34 bc bc bc 46 bc bc bc 00    ???L???4???F???.
70: bc bc bc 38 bc bc bc 11 bc bc bc 20 bc bc bc 20    ???8??????? ???
80: bc bc bc ff bc bc bc ff bc bc bc ff bc bc bc ff    ???.???.???.???.
...

which can lead to:
[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder
[drm:drm_edid_block_valid] *ERROR* Raw EDID:
<3>30 30 30 30 30 30 30 32 38 32 30 32 63 63 31 61  000000028202cc1a
<3>28 00 02 8c 00 00 00 00 18 00 00 00 00 00 00 00  (...............
<3>20 4c 61 73 74 20 62 65 61 63 6f 6e 3a 20 33 32   Last beacon: 32
<3>32 30 6d 73 20 61 67 6f 46 00 05 8c 00 00 00 00  20ms agoF.......
<3>36 00 00 00 00 00 00 00 00 0c 57 69 2d 46 69 20  6.........Wi-Fi
<3>52 6f 75 74 65 72 01 08 82 84 8b 96 24 30 48 6c  Router......$0Hl
<3>03 01 01 06 02 00 00 2a 01 00 2f 01 00 32 04 0c  .......*../..2..
<3>12 18 60 dd 09 00 10 18 02 00 00 01 00 00 18 00  ..`.............

Signed-off-by: David Flynn <davidf@rd.bbc.co.uk>
[ickle: fix up some surrounding checkpatch warnings]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
2010-12-08 19:40:08 +00:00
Linus Torvalds
6313e3c217 Merge branches 'x86-fixes-for-linus', 'perf-fixes-for-linus' and 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/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/pvclock: Zero last_value on resume

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf record: Fix eternal wait for stillborn child
  perf header: Don't assume there's no attr info if no sample ids is provided
  perf symbols: Figure out start address of kernel map from kallsyms
  perf symbols: Fix kallsyms kernel/module map splitting

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  nohz: Fix printk_needs_cpu() return value on offline cpus
  printk: Fix wake_up_klogd() vs cpu hotplug
2010-12-08 06:40:59 -08:00
Linus Torvalds
6dde39be39 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/i915: i915 cannot provide switcher services.
  drm/radeon/kms: fix vram base calculation on rs780/rs880
  drm/radeon/kms: fix formatting of vram and gtt info
  drm/radeon/kms: forbid big bo allocation (fdo 31708) v3
  drm: Don't try and disable an encoder that was never enabled
  drm: Add missing drm_vblank_put() along queue vblank error path
  drm/i915/dp: Only apply the workaround if the select is still active
  drm/i915: Emit a request to clear a flushed and idle ring for unbusy bo
  drm/i915/lvds: Always restore panel-fitter when enabling the LVDS
  drm/i915/ringbuffer: Only print an error on the second attempt to reset head
  drm/i915: announce to userspace that the bsd ring is coherent
  agp/intel: Fix wrong kunmap in i830_cleanup()
  drm/i915: Factor in pixel-repeat in FDI M/N calculation
  drm/i915: Death to the unnecessary 64bit divide
  drm/i915: Clean conflicting modesetting registers upon init
  drm/i915: Apply a workaround for transitioning from DP on pipe B to HDMI.
  drm/i915: Always set the DP transcoder config to 8BPC.
2010-12-08 06:34:39 -08:00
Linus Torvalds
f8f5d4f11d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: wacom - add new Bamboo PT (0xdb)
  Input: add input driver for polled GPIO buttons
  Input: turbografx - fix reference counting
  Input: synaptics - fix handling of 2-button ClickPads
  Input: wacom - add IDs for two new Bamboo PTs
  Input: document struct input_absinfo
  Input: add keycodes for touchpad on/off keys
  Input: usbtouchscreen - add support for LG Flatron T1710B
2010-12-08 06:34:02 -08:00
Dave Airlie
599bbb9de0 drm/i915: i915 cannot provide switcher services.
it has a DSM but the switcher is done via WMI.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-12-08 15:40:44 +10:00
David Foley
47d092352c Input: wacom - add new Bamboo PT (0xdb)
Adds new Bamboo Pen & Touch model - Bamboo P & T Special Edition
Medium (CTH661/L; Product ID = 0xdb).

Tested-by: Tobias Verbeke <tobias.verbeke@gmail.com>
Signed-off-by: David Foley <favux.is@gmail.com>
Acked-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-12-07 21:09:38 -08:00
Linus Torvalds
2cedcc4f12 Merge branch 'fixes/2637-rc5/s3c24xx' of git://git.fluff.org/bjdooks/linux
* 'fixes/2637-rc5/s3c24xx' of git://git.fluff.org/bjdooks/linux:
  ARM: S3C24XX: Fix mess with gpio {set,get}_pull callbacks
  ARM: mini2440: Fix Kconfig to allow kernel to build
  ARM: S3C2412: Fix typo in CONFIG_CPU_S3C2412_ONLY definition
  ARM: S3C2443: Select properly ARM core type
  ARM: SMDK2416: Select MACH_SMDK, S3C_DEV_NAND, S3C_DEV_USB_HOST
2010-12-07 17:13:50 -08:00
Vasily Khoruzhick
812c4e40c2 ARM: S3C24XX: Fix mess with gpio {set,get}_pull callbacks
Currently the {set,get}_pull callbacks of the s3c24xx_gpiocfg_default structure
are initalized via s3c_gpio_{get,set}pull_1up. This results in a linker
error when only CONFIG_CPU_S3C2442 is selected:

arch/arm/plat-s3c24xx/built-in.o:(.data+0x13f4): undefined reference to
`s3c_gpio_getpull_1up'
arch/arm/plat-s3c24xx/built-in.o:(.data+0x13f8): undefined reference to
`s3c_gpio_setpull_1up'

The s3c2442 has pulldowns instead of pullups compared to the s3c2440.
The method of controlling them is the same though.
So this patch modifies the existing s3c_gpio_{get,set}pull_1up helper functions
to take an additional parameter deciding whether the pin has a pullup or pulldown.
The s3c_gpio_{get,set}pull_1{down,up} functions then wrap that functions passing
either S3C_GPIO_PULL_UP or S3C_GPIO_PULL_DOWN.

Furthermore this patch sets up the s3c24xx_gpiocfg_default.{get,set}_pull fields
in the s3c244{0,2}_map_io function to the new pulldown helper functions.

Based on patch from "Lars-Peter Clausen" <lars@metafoo.de>

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-12-08 01:04:56 +00:00
Alex Deucher
8961d52d4c drm/radeon/kms: fix vram base calculation on rs780/rs880
Avoid overflowing a 32 bit value.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-12-08 09:35:05 +10:00
Alex Deucher
dd7cc55a25 drm/radeon/kms: fix formatting of vram and gtt info
print the full 64 bit values.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-12-08 09:34:32 +10:00
Jerome Glisse
93225b0d7b drm/radeon/kms: forbid big bo allocation (fdo 31708) v3
Forbid allocating buffer bigger than visible VRAM or GTT, also
properly set lpfn field.

v2 - use max macro
   - silence warning
v3 - don't explicitly set range limit
   - use min macro

Cc: stable <stable@kernel.org>

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-12-08 09:33:41 +10:00
Chris Wilson
541cc96691 drm: Don't try and disable an encoder that was never enabled
Prevents code that assumes that the encoder is active when asked to be
disabled from dying a horrible death.

Reported-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-12-08 09:33:02 +10:00
Chris Wilson
ea5d552c73 drm: Add missing drm_vblank_put() along queue vblank error path
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Kristian Høgsberg <krh@bitplanet.net>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-12-08 09:31:52 +10:00
Dave Airlie
e516c7df4c Merge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel into drm-fixes 2010-12-08 09:30:59 +10:00
Chris Wilson
c57802706a drm/i915: Disable renderctx powersaving support for Ironlake
... still causes a failure during suspend.

Reported-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-07 23:05:32 +00:00
Chris Wilson
1a1c69762a Merge branch 'drm-intel-fixes' into drm-intel-next
Conflicts:
	drivers/gpu/drm/i915/i915_gem.c
	drivers/gpu/drm/i915/intel_dp.c
2010-12-07 23:02:08 +00:00
Chris Wilson
1b39d6f376 drm/i915/dp: Only apply the workaround if the select is still active
As we may try to power down the link at various times, it is not
necessarily still coupled with an encoder and so we must be careful not
to depend upon an operation that is only valid when the link is still
attached to a pipe.

Fixes regression in 5bddd17.

Reported-and-tested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org [after applying 5bddd17]
2010-12-07 22:46:11 +00:00
David Howells
6142e05f30 MN10300: Fix interrupt mask alteration function call name in gdbstub
Fix the name of interrupt mask alteration function (ie the
local_change_intr_mask_level() fn) called in gdbstub to have an arch_
prefix to match the definition in asm/irqflags.h.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-07 11:29:14 -08:00
Linus Torvalds
81e8d21625 Merge branch 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: Fix incorrect proc spurious output
2010-12-07 08:14:28 -08:00
Linus Torvalds
ff43fa8b41 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:
  wmi: use memcmp instead of strncmp to compare GUIDs
  ACPI, hp-wmi: Fix memory leak in acpi query
  msi-wmi: fix semantically incorrect use of keycode instead of scancode
  msi-wmi: Add mute key support
  asus-laptop: add wimax and wwan support
  eeepc-wmi: fix compiler warning
  ibm_rtl: _RTL_ is not available in UEFI mode
  ibm_rtl: Loosen the DMI criteria to all IBM machines
  drivers/platform/x86/thinkpad_acpi.c: delete double assignment
  eeepc-wmi: add cpufv sysfs documentation
  toshiba_acpi.c: Add key_entry for a lone FN keypress
  ibm_rtl: fix printk format warning
2010-12-07 08:14:04 -08:00
Linus Torvalds
c2048b0a0a Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] css: fix rsid evaluation for 2nd crw
  [S390] nohz/s390: fix arch_needs_cpu() return value on offline cpus
2010-12-07 08:04:08 -08:00
Ian Kent
de47de7404 autofs4 - remove ioctl mutex (bz23142)
With the recent changes to remove the BKL a mutex was added to the
ioctl entry point for calls to the old ioctl interface. This mutex
needs to be removed because of the need for the expire ioctl to call
back to the daemon to perform a umount and receive a completion
status (via another ioctl).

This should be fine as the new ioctl interface uses much of the same
code and it has been used without a mutex for around a year without
issue, as was the original intention.

Ref: Bugzilla bug 23142

Signed-off-by: Ian Kent <raven@themaw.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-07 07:45:44 -08:00
Chris Wilson
7a1948768c drm/i915: Emit a request to clear a flushed and idle ring for unbusy bo
In order for bos to retire eventually, a request must be sent down the
ring. This is expected, for example, by occlusion queries for which mesa
will wait upon (whilst running glean) before issuing more batches and so
the normal activity upon the ring is suspended and we need to emit a
request to clear the idle ring.

Reported-by: Jinjin, Wang <jinjin.wang@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=30380
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2010-12-07 10:59:14 +00:00
Linus Torvalds
cf7d7e5a19 Linux 2.6.37-rc5 2010-12-06 20:09:04 -08:00
Linus Torvalds
086b17046c Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
  ocfs2_connection_find() returns pointer to bad structure
  ocfs2: char is not always signed
  Ocfs2: Stop tracking a negative dentry after dentry_iput().
  ocfs2: fix memory leak
  fs/ocfs2/dlm: Use GFP_ATOMIC under spin_lock
2010-12-06 20:08:25 -08:00
Olof Johansson
da8f2e2461 ARM: tegra: fix regression from addruart rewrite
Commit 0ea1293009 ("arm: return both physical and virtual addresses
from addruart") took out the test for MMU on/off but didn't switch the
ldr instructions to no longer be conditionals based on said test.

Fix that.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Colin Cross <ccross@android.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-06 20:07:57 -08:00
Gabor Juhos
0e7d0c860a Input: add input driver for polled GPIO buttons
The existing gpio-keys driver can be usable only for GPIO lines with
interrupt support. Several devices have buttons connected to a GPIO
line which is not capable to generate interrupts. This patch adds a
new input driver using the generic GPIO layer and the input-polldev
to support such buttons.

[Ben Gardiner <bengardiner@nanometrics.ca: fold code to use more
 of the original gpio_keys infrastructure; cleanups and other
 improvements.]

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca>
Tested-by: Ben Gardiner <bengardiner@nanometrics.ca>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-12-06 17:15:15 -08:00
Linus Torvalds
7787d2c2f4 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 memory corruption related to swap
  PM / Hibernate: Use async I/O when reading compressed hibernation image
2010-12-06 15:51:14 -08:00
Rafael J. Wysocki
c9e664f1fd PM / Hibernate: Fix memory corruption related to swap
There is a problem that swap pages allocated before the creation of
a hibernation image can be released and used for storing the contents
of different memory pages while the image is being saved.  Since the
kernel stored in the image doesn't know of that, it causes memory
corruption to occur after resume from hibernation, especially on
systems with relatively small RAM that need to swap often.

This issue can be addressed by keeping the GFP_IOFS bits clear
in gfp_allowed_mask during the entire hibernation, including the
saving of the image, until the system is finally turned off or
the hibernation is aborted.  Unfortunately, for this purpose
it's necessary to rework the way in which the hibernate and
suspend code manipulates gfp_allowed_mask.

This change is based on an earlier patch from Hugh Dickins.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Hugh Dickins <hughd@google.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: stable@kernel.org
2010-12-06 23:52:08 +01:00
Linus Torvalds
60658f8a29 Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: 6524/1: GIC irq desciptor bug fix
  ARM: 6523/1: iop: ensure sched_clock() is notrace
  ARM: 6456/1: Fix for building DEBUG with sa11xx_base.c as a module.
  ARM: 6519/1: kuser: Fix incorrect cmpxchg syscall in kuser helpers
  ARM: 6505/1: kprobes: Don't HAVE_KPROBES when CONFIG_THUMB2_KERNEL is selected
  ARM: 6508/1: vexpress: Correct data alignment in headsmp.S for CONFIG_THUMB2_KERNEL
  ARM: 6507/1: RealView: Correct data alignment in headsmp.S for CONFIG_THUMB2_KERNEL
  ARM: 6504/1: Thumb-2: Fix long-distance conditional branches in head.S for Thumb-2.
  ARM: 6503/1: Thumb-2: Restore sensible zImage header layout for CONFIG_THUMB2_KERNEL
  ARM: 6502/1: Thumb-2: Fix CONFIG_THUMB2_KERNEL breakage in compressed/head.S
  ARM: 6501/1: Thumb-2: Correct data alignment for CONFIG_THUMB2_KERNEL in mm/proc-v7.S
  ARM: 6500/1: Thumb-2: Correct data alignment for CONFIG_THUMB2_KERNEL in kernel/head.S
  ARM: 6499/1: Thumb-2: Correct data alignment for CONFIG_THUMB2_KERNEL in bootp/init.S
  ARM: 6498/1: vfp: Correct data alignment for CONFIG_THUMB2_KERNEL
  ARM: 6497/1: kexec: Correct data alignment for CONFIG_THUMB2_KERNEL
  ARM: 6496/1: GIC: Do not try to register more then NR_IRQS interrupts
  ARM: cns3xxx: Fix build with CONFIG_PCI=y
2010-12-06 14:49:51 -08:00
Bojan Smojver
9f339caf84 PM / Hibernate: Use async I/O when reading compressed hibernation image
This is a fix for reading LZO compressed image using async I/O.
Essentially, instead of having just one page into which we keep
reading blocks from swap, we allocate enough of them to cover the
largest compressed size and then let block I/O pick them all up. Once
we have them all (and here we wait), we decompress them, as usual.
Obviously, the very first block we still pick up synchronously,
because we need to know the size of the lot before we pick up the
rest.

Also fixed the copyright line, which I've forgotten before.

Signed-off-by: Bojan Smojver <bojan@rexursive.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2010-12-06 23:38:29 +01:00