Commit Graph

264446 Commits

Author SHA1 Message Date
Uwe Kleine-König
8aece6ab49 ARM: imx: use mc13xxx constants instead of mc13783
The latter constants are going to be removed in favour of the former

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:12 +02:00
Uwe Kleine-König
8dd93eeee8 input: Convert mc13783-ts to mc13xxx API
This is the first step to also support the touch interface of the mc13892
pmic chip.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:12 +02:00
Uwe Kleine-König
fec316d632 mfd: Provide a generic version of mc13xxx adc_do_conversion
This is needed to convert the touch driver away from using struct mc13783.

Note this patch drops MC13783_ADC0_ADREFMODE. This is unused and doesn't
exist on mc13892.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:12 +02:00
David Jander
f3ca07824f leds: Convert mc13783 driver to mc13xxx MFD
mc13xxx is the more general API and most of the mc13783_... functions
are going to die.

Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:12 +02:00
Mark Brown
2b247d06c6 mfd: Select REGMAP_I2C from WM8400
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:12 +02:00
Felipe Balbi
925e853c24 mfd: Set twl4030-irq irq nested flag
Threads from twl4030's children will be called
nested in the context of the demultiplexing
handler on twl4030-irq.c.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:12 +02:00
Felipe Balbi
2f2a7d5ef7 mfd: Drop twl4030-irq's edge_work
... and do all the synchronization with the
hardware during bus_sync_unlock. We can now
remove all the workqueues.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:11 +02:00
Felipe Balbi
848684246f mfd: Drop twl4030-irq's mask_work
... we can do the synchronization with the
hardware when calling bus_sync_unlock as
we're supposed to. While at that, also make
variable names uniform on all functions.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:11 +02:00
Felipe Balbi
7750c9b0d2 mfd: Drop the twl4030-irq kthread
... and use threaded IRQ infrastructure. Later
patches will come dropping both workqueues and
setting the nested thread flag.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:11 +02:00
Felipe Balbi
91e3569ff4 mfd: Implement bus_lock/bus_sync_unlock twl4030-irq methods
For doing that, drop the locking and change that
to a mutex.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:11 +02:00
Felipe Balbi
8cd6af2938 mfd: Remove twl4030-irq trailing whitespaces
trivial patch, no functional changes.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:11 +02:00
MyungJoo Ham
01fdaab8ff mfd: Wake-up from Suspend MAX8997 support
- Support wake-up from suspend-to-ram.
- Handle pending interrupt after a resume.
- If pdata->wakeup is enabled, by default, the device is assumed to be
capable of wakeup (the interrupt pin is connected to a wakeup-source GPIO)
and may wakeup the system (MAX8997 has a power button input pin).

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:11 +02:00
Mark Brown
5f40c6b650 mfd: Add more checks for WM8994 being active during suspend
Enhancements to the WM8994 audio driver and new features on more modern
devices in the series mean that we can no longer rely on VMID being active
as an indication that the device is active. Add further checks for digital
paths and microphone detection.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:10 +02:00
Kyle Manna
cdcc966d48 arm: BeagleBoard: add support for the twl4030-madc
Signed-off-by: Kyle Manna <kyle@kylemanna.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:10 +02:00
Kyle Manna
3d6271f92e mfd: Turn on the twl4030-madc MADC clock
Without turning the MADC clock on, no MADC conversions occur.

$ cat /sys/class/hwmon/hwmon0/device/in8_input
[   53.428436] twl4030_madc twl4030_madc: conversion timeout!
cat: read error: Resource temporarily unavailable

Signed-off-by: Kyle Manna <kyle@kylemanna.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:10 +02:00
Mark Brown
881de67046 mfd: Allow WM8994 LDO enable pulls to be disabled
In systems where the LDO enables are always driven (for example, being
connected to an always on supply rail or a GPIO which is driven by the
CPU even in suspend) then we can disable the pull downs on the LDO for
a small power savings.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:10 +02:00
Axel Lin
862de70c12 mfd: Make sure to request twl6030 IRQ before using the irq_num
I was trying to fix the error handling part because in the case of
request_irq failure, it should call kthread_stop instead of free_irq.
But it seems more reasonable to do request_irq before calling kthread_run.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:10 +02:00
Karl Komierowski
bd4a40b57b mfd: Refactor ab8500 GPADC API, add raw access
Refactor the GPADC interface to avoid bugs in calling code:

- ab8500_gpadc_[convert|read_raw|ad_to_voltage] clarifies
  each functions use case, *convert wraps *read_raw, and we
  can access raw ADC values properly.
- Renamed gpadc function arguments from "input" to "channel" to
  clarify use, so we don't get confused again.

Signed-off-by: Kalle Komierowski <kalle.komierowski@stericsson.com>
Reviewed-by: Mattias Wallin <mattias.wallin@stericsson.com>
Reviewed-by: John Beckett <john.beckett@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:10 +02:00
Julia Lawall
981c65a9b3 mfd: Clean timberdale error handling code up
In the first three cases, ioremap has been called, so iounmap is needed.  A
new label for this is introduced, to differentiate it from err_msix, which
is the first point at which msix_entries actually needs to be freed.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:10 +02:00
Linus Walleij
54d8e2c323 mfd: Add missing #ifdef around tc3589x PM block
The CONFIG_PM code was unconditionally compiled in despite
the dev_pm_ops only being included into the driver struct
if used. Fix this by adding the missing #ifdef.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:09 +02:00
Paul Parsons
d8e4a88b79 mfd: Define asic3 gpio_chip label
Defined the gpio_chip label in the mfd/asic3 driver for diagnostics.

Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:09 +02:00
Paul Parsons
c29a81270b mfd: Make asic3_clk_enable() a void function
The return value of asic3_clk_enable() was neither used nor useful. So let's
make it a void function, and thereby match asic3_clk_disable().

Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:09 +02:00
Paul Parsons
e0b13b5b6a mfd: Add asic3 based LED suspend/resume handlers
Added led suspend/resume handlers to the leds/leds-asic3 and mfd/asic3 drivers.
On suspend the leds will be turned off and their clocks disabled. On resume the
reverse.

Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:09 +02:00
Paul Parsons
3c6e36537e mfd: Fix asic3 based SD card resume after suspend
The mfd/asic3 driver did not define the suspend/resume handlers for the mmc cell
driver. Consequently the mmc driver did not resume properly after returning from
suspend, making sd cards unusable and preventing suspend from being entered a
second time. This patch adds the suspend/resume handlers, fixing the problem.

Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:09 +02:00
Mark Brown
1693673fc0 mfd: Remove spurious newlines from wm831x-irq.c
More annoying than usual as they're in the middle of a function.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:08 +02:00
Mark Brown
6e3ad11804 mfd: Convert pcf50633 to use new register map API
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Tested-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:08 +02:00
Wanlong Gao
d036c96e70 mfd: Fix section mismatch warning in ab3550-core
This patch fixes:
WARNING: drivers/mfd/built-in.o(.data+0x9998): Section mismatch in reference from the variable ab3550_driver to the function .init.text:ab3550_probe()
The variable ab3550_driver references
the function __init ab3550_probe()
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console

Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:08 +02:00
Linus Torvalds
c3b92c8787 Linux 3.1 2011-10-24 09:10:05 +02:00
Linus Torvalds
6a0596583f Merge git://git.infradead.org/iommu-2.6
* git://git.infradead.org/iommu-2.6:
  intel-iommu: fix superpage support in pfn_to_dma_pte()
  intel-iommu: set iommu_superpage on VM domains to lowest common denominator
  intel-iommu: fix return value of iommu_unmap() API
  MAINTAINERS: Update VT-d entry for drivers/pci -> drivers/iommu move
  intel-iommu: Export a flag indicating that the IOMMU is used for iGFX.
  intel-iommu: Workaround IOTLB hang on Ironlake GPU
  intel-iommu: Fix AB-BA lockdep report
2011-10-24 07:08:24 +02:00
Linus Torvalds
15cc910112 Merge branch 'for-linus' of http://people.redhat.com/agk/git/linux-dm
* 'for-linus' of http://people.redhat.com/agk/git/linux-dm:
  dm kcopyd: fix job_pool leak
2011-10-24 07:05:38 +02:00
Takashi Iwai
8548c84da2 x86: Fix S4 regression
Commit 4b239f458 ("x86-64, mm: Put early page table high") causes a S4
regression since 2.6.39, namely the machine reboots occasionally at S4
resume.  It doesn't happen always, overall rate is about 1/20.  But,
like other bugs, once when this happens, it continues to happen.

This patch fixes the problem by essentially reverting the memory
assignment in the older way.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Cc: <stable@kernel.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Yinghai Lu <yinghai.lu@oracle.com>
[ We'll hopefully find the real fix, but that's too late for 3.1 now ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-10-24 06:55:20 +02:00
Alasdair G Kergon
d136f2efdf dm kcopyd: fix job_pool leak
Fix memory leak introduced by commit a6e50b409d
(dm snapshot: skip reading origin when overwriting complete chunk).

When allocating a set of jobs from kc->job_pool, job->master_job must be
set (to point to itself) so that the mempool item gets freed when the
master_job completes.

master_job was introduced by commit c6ea41fbbe
(dm kcopyd: preallocate sub jobs to avoid deadlock)

Reported-by: Michael Leun <ml@newton.leun.net>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2011-10-23 20:55:17 +01:00
Linus Torvalds
1bf1aacedc Merge branch 'samsung-fixes-4' of git://github.com/kgene/linux-samsung
* 'samsung-fixes-4' of git://github.com/kgene/linux-samsung:
  ARM: S3C24XX: Fix s3c24xx build errors if !CONFIG_PM
  ARM: S5P: fix offset calculation on gpio-interrupt
2011-10-23 10:44:40 +03:00
Linus Torvalds
5117cc25fd Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (w83627ehf) Fix negative 8-bit temperature values
2011-10-23 10:43:31 +03:00
Domenico Andreoli
fb630b9fc9 ARM: S3C24XX: Fix s3c24xx build errors if !CONFIG_PM
v2:
- register_syscore_ops(&s3c24xx_irq_syscore_ops) does not need to be
  conditionally compiled out, it is already optimized out on !CONFIG_PM
- fix also s3c2412 and s3c2416 affected by the same build issue

v1:
s3c2440.c fails to build if !CONFIG_PM because in such case
s3c2410_pm_syscore_ops is not defined. Same error should happen also
in s3c2410.c and s3c2442.c

Signed-off-by: Domenico Andreoli <cavokz@gmail.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-10-22 04:00:53 +09:00
Linus Torvalds
2efd7c0fdc Merge git://github.com/herbertx/crypto
* git://github.com/herbertx/crypto:
  crypto: ghash - Avoid null pointer dereference if no key is set
2011-10-21 17:02:18 +03:00
Linus Torvalds
62ddc0046e Merge branch 'fix/hda' of git://github.com/tiwai/sound
* 'fix/hda' of git://github.com/tiwai/sound:
  ALSA: HDA: conexant support for Lenovo T520/W520
  ALSA: hda - Add position_fix quirk for Dell Inspiron 1010
2011-10-21 17:01:21 +03:00
Nick Bowler
7ed47b7d14 crypto: ghash - Avoid null pointer dereference if no key is set
The ghash_update function passes a pointer to gf128mul_4k_lle which will
be NULL if ghash_setkey is not called or if the most recent call to
ghash_setkey failed to allocate memory.  This causes an oops.  Fix this
up by returning an error code in the null case.

This is trivially triggered from unprivileged userspace through the
AF_ALG interface by simply writing to the socket without setting a key.

The ghash_final function has a similar issue, but triggering it requires
a memory allocation failure in ghash_setkey _after_ at least one
successful call to ghash_update.

  BUG: unable to handle kernel NULL pointer dereference at 00000670
  IP: [<d88c92d4>] gf128mul_4k_lle+0x23/0x60 [gf128mul]
  *pde = 00000000
  Oops: 0000 [#1] PREEMPT SMP
  Modules linked in: ghash_generic gf128mul algif_hash af_alg nfs lockd nfs_acl sunrpc bridge ipv6 stp llc

  Pid: 1502, comm: hashatron Tainted: G        W   3.1.0-rc9-00085-ge9308cf #32 Bochs Bochs
  EIP: 0060:[<d88c92d4>] EFLAGS: 00000202 CPU: 0
  EIP is at gf128mul_4k_lle+0x23/0x60 [gf128mul]
  EAX: d69db1f0 EBX: d6b8ddac ECX: 00000004 EDX: 00000000
  ESI: 00000670 EDI: d6b8ddac EBP: d6b8ddc8 ESP: d6b8dda4
   DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
  Process hashatron (pid: 1502, ti=d6b8c000 task=d6810000 task.ti=d6b8c000)
  Stack:
   00000000 d69db1f0 00000163 00000000 d6b8ddc8 c101a520 d69db1f0 d52aa000
   00000ff0 d6b8dde8 d88d310f d6b8a3f8 d52aa000 00001000 d88d502c d6b8ddfc
   00001000 d6b8ddf4 c11676ed d69db1e8 d6b8de24 c11679ad d52aa000 00000000
  Call Trace:
   [<c101a520>] ? kmap_atomic_prot+0x37/0xa6
   [<d88d310f>] ghash_update+0x85/0xbe [ghash_generic]
   [<c11676ed>] crypto_shash_update+0x18/0x1b
   [<c11679ad>] shash_ahash_update+0x22/0x36
   [<c11679cc>] shash_async_update+0xb/0xd
   [<d88ce0ba>] hash_sendpage+0xba/0xf2 [algif_hash]
   [<c121b24c>] kernel_sendpage+0x39/0x4e
   [<d88ce000>] ? 0xd88cdfff
   [<c121b298>] sock_sendpage+0x37/0x3e
   [<c121b261>] ? kernel_sendpage+0x4e/0x4e
   [<c10b4dbc>] pipe_to_sendpage+0x56/0x61
   [<c10b4e1f>] splice_from_pipe_feed+0x58/0xcd
   [<c10b4d66>] ? splice_from_pipe_begin+0x10/0x10
   [<c10b51f5>] __splice_from_pipe+0x36/0x55
   [<c10b4d66>] ? splice_from_pipe_begin+0x10/0x10
   [<c10b6383>] splice_from_pipe+0x51/0x64
   [<c10b63c2>] ? default_file_splice_write+0x2c/0x2c
   [<c10b63d5>] generic_splice_sendpage+0x13/0x15
   [<c10b4d66>] ? splice_from_pipe_begin+0x10/0x10
   [<c10b527f>] do_splice_from+0x5d/0x67
   [<c10b6865>] sys_splice+0x2bf/0x363
   [<c129373b>] ? sysenter_exit+0xf/0x16
   [<c104dc1e>] ? trace_hardirqs_on_caller+0x10e/0x13f
   [<c129370c>] sysenter_do_call+0x12/0x32
  Code: 83 c4 0c 5b 5e 5f c9 c3 55 b9 04 00 00 00 89 e5 57 8d 7d e4 56 53 8d 5d e4 83 ec 18 89 45 e0 89 55 dc 0f b6 70 0f c1 e6 04 01 d6 <f3> a5 be 0f 00 00 00 4e 89 d8 e8 48 ff ff ff 8b 45 e0 89 da 0f
  EIP: [<d88c92d4>] gf128mul_4k_lle+0x23/0x60 [gf128mul] SS:ESP 0068:d6b8dda4
  CR2: 0000000000000670
  ---[ end trace 4eaa2a86a8e2da24 ]---
  note: hashatron[1502] exited with preempt_count 1
  BUG: scheduling while atomic: hashatron/1502/0x10000002
  INFO: lockdep is turned off.
  [...]

Signed-off-by: Nick Bowler <nbowler@elliptictech.com>
Cc: stable@kernel.org [2.6.37+]
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2011-10-21 13:18:42 +02:00
Marek Szyprowski
1052cff317 ARM: S5P: fix offset calculation on gpio-interrupt
Offsets of the irq controller registers were calculated
correctly only for first GPIO bank. This patch fixes
calculation of the register offsets for all GPIO banks.

Reported-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-10-21 18:05:02 +09:00
Linus Torvalds
fd11e153b8 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc: Add alignment flag to PCI expansion resources
  sparc: Avoid calling sigprocmask()
  sparc: Use set_current_blocked()
  sparc32,leon: SRMMU MMU Table probe fix
2011-10-20 22:16:28 +03:00
Linus Torvalds
505f48b534 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  fib_rules: fix unresolved_rules counting
  r8169: fix wrong eee setting for rlt8111evl
  r8169: fix driver shutdown WoL regression.
  ehea: Change maintainer to me
  pptp: pptp_rcv_core() misses pskb_may_pull() call
  tproxy: copy transparent flag when creating a time wait
  pptp: fix skb leak in pptp_xmit()
  bonding: use local function pointer of bond->recv_probe in bond_handle_frame
  smsc911x: Add support for SMSC LAN89218
  tg3: negate USE_PHYLIB flag check
  netconsole: enable netconsole can make net_device refcnt incorrent
  bluetooth: Properly clone LSM attributes to newly created child connections
  l2tp: fix a potential skb leak in l2tp_xmit_skb()
  bridge: fix hang on removal of bridge via netlink
  x25: Prevent skb overreads when checking call user data
  x25: Handle undersized/fragmented skbs
  x25: Validate incoming call user data lengths
  udplite: fast-path computation of checksum coverage
  IPVS netns shutdown/startup dead-lock
  netfilter: nf_conntrack: fix event flooding in GRE protocol tracker
2011-10-20 22:15:20 +03:00
Jean Delvare
133d324d82 hwmon: (w83627ehf) Fix negative 8-bit temperature values
Since 8-bit temperature values are now handled in 16-bit struct
members, values have to be cast to s8 for negative temperatures to be
properly handled. This is broken since kernel version 2.6.39
(commit bce26c58df86599c9570cee83eac58bdaae760e4.)

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: stable@kernel.org	# 2.6.39+
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-10-20 07:17:08 -07:00
Hugh Dickins
486cf46f3f mm: fix race between mremap and removing migration entry
I don't usually pay much attention to the stale "? " addresses in
stack backtraces, but this lucky report from Pawel Sikora hints that
mremap's move_ptes() has inadequate locking against page migration.

 3.0 BUG_ON(!PageLocked(p)) in migration_entry_to_page():
 kernel BUG at include/linux/swapops.h:105!
 RIP: 0010:[<ffffffff81127b76>]  [<ffffffff81127b76>]
                       migration_entry_wait+0x156/0x160
  [<ffffffff811016a1>] handle_pte_fault+0xae1/0xaf0
  [<ffffffff810feee2>] ? __pte_alloc+0x42/0x120
  [<ffffffff8112c26b>] ? do_huge_pmd_anonymous_page+0xab/0x310
  [<ffffffff81102a31>] handle_mm_fault+0x181/0x310
  [<ffffffff81106097>] ? vma_adjust+0x537/0x570
  [<ffffffff81424bed>] do_page_fault+0x11d/0x4e0
  [<ffffffff81109a05>] ? do_mremap+0x2d5/0x570
  [<ffffffff81421d5f>] page_fault+0x1f/0x30

mremap's down_write of mmap_sem, together with i_mmap_mutex or lock,
and pagetable locks, were good enough before page migration (with its
requirement that every migration entry be found) came in, and enough
while migration always held mmap_sem; but not enough nowadays, when
there's memory hotremove and compaction.

The danger is that move_ptes() lets a migration entry dodge around
behind remove_migration_pte()'s back, so it's in the old location when
looking at the new, then in the new location when looking at the old.

Either mremap's move_ptes() must additionally take anon_vma lock(), or
migration's remove_migration_pte() must stop peeking for is_swap_entry()
before it takes pagetable lock.

Consensus chooses the latter: we prefer to add overhead to migration
than to mremapping, which gets used by JVMs and by exec stack setup.

Reported-and-tested-by: Paweł Sikora <pluto@agmk.net>
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-10-19 23:42:58 -07:00
Kjetil Oftedal
aad4564498 sparc: Add alignment flag to PCI expansion resources
Currently no type of alignment is specified for PCI expansion roms while 
parsing the openfirmware tree. This causes calls to pci_map_rom() to fail.
IORESOURCE_SIZEALIGN is the default alignment used for rom resouces in 
pci/probe.c, and has been verified to work with various cards on a ultra 10.

Signed-off-By: Kjetil Oftedal <oftedal@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19 16:20:50 -07:00
Yan, Zheng
afaef734e5 fib_rules: fix unresolved_rules counting
we should decrease ops->unresolved_rules when deleting a unresolved rule.

Signed-off-by: Zheng Yan <zheng.z.yan@intel.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19 19:17:41 -04:00
hayeswang
1b23a3e3d1 r8169: fix wrong eee setting for rlt8111evl
Correct the wrong parameter for setting EEE for RTL8111E-VL.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19 18:48:17 -04:00
françois romieu
649b3b8c4e r8169: fix driver shutdown WoL regression.
Due to commit 92fc43b415 ("r8169: modify the
flow of the hw reset."), rtl8169_hw_reset stomps during driver shutdown on
RxConfig bits which are needed for WOL on some versions of the hardware.

As these bits were formerly set from the r81{0x, 68}_pll_power_down methods,
factor them out for use in the driver shutdown (rtl_shutdown) handler.

I favored __rtl8169_get_wol() -hardware state indication- over
RTL_FEATURE_WOL as the latter has become a good candidate for removal.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Hayes <hayeswang@realtek.com>
Tested-by: Marc Ballarin <ballarin.marc@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19 17:08:21 -04:00
Thadeu Lima de Souza Cascardo
34b1901abd ehea: Change maintainer to me
Breno Leitao has passed the maintainership to me.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Cc: Breno Leitao <leitao@linux.vnet.ibm.com>
Acked-by: Breno Leitão <leitao@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19 16:01:20 -04:00
Linus Torvalds
e4fcd69c9e Merge branch 'v4l_for_linus' of git://linuxtv.org/mchehab/for_linus
* 'v4l_for_linus' of git://linuxtv.org/mchehab/for_linus:
  [media] videodev: fix a NULL pointer dereference in v4l2_device_release()
2011-10-19 06:44:11 -07:00
Linus Torvalds
f91f6cfd4f Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon/kms/atom: fix handling of FB scratch indices
  drm/radeon/kms/DCE4.1: fix Select_CrtcSource EncodeMode setting for DP bridges (v2)
  drm/radeon/kms/DCE4.1: ss is not supported on the internal pplls
  drm/radeon/kms/DCE4.1: fix dig encoder to transmitter mapping
  ttm: Fix error-path using an uninitialized value
2011-10-19 06:43:24 -07:00