platform/kernel/kernel-mfld-blackbay.git
13 years agoPM: earlysuspend: Removing dependence on console.
Rebecca Schultz [Fri, 18 Jul 2008 01:14:55 +0000 (18:14 -0700)]
PM: earlysuspend: Removing dependence on console.

Rather than signaling a full update of the display from userspace via a
console switch, this patch introduces 2 files int /sys/power,
wait_for_fb_sleep and wait_for_fb_wake.  Reading these files will block
until the requested state has been entered.  When a read from
wait_for_fb_sleep returns userspace should stop drawing.  When
wait_for_fb_wake returns, it should do a full update.  If either are called
when the fb driver is already in the requested state, they will return
immediately.

Signed-off-by: Rebecca Schultz <rschultz@google.com>
Signed-off-by: Arve Hjønnevåg <arve@android.com>
13 years agoconsoleearlysuspend: Fix for 2.6.32
Arve Hjønnevåg [Tue, 15 Dec 2009 06:14:52 +0000 (22:14 -0800)]
consoleearlysuspend: Fix for 2.6.32

vt_waitactive now needs a 1 based console number

Change-Id: I07ab9a3773c93d67c09d928c8d5494ce823ffa2e

13 years agoPM: earlysuspend: Add console switch when user requested sleep state changes.
Arve Hjønnevåg [Thu, 16 Oct 2008 00:52:20 +0000 (17:52 -0700)]
PM: earlysuspend: Add console switch when user requested sleep state changes.

Signed-off-by: Arve Hjønnevåg <arve@android.com>
13 years agoPM: wakelock: Don't dump unfrozen task list when aborting try_to_freeze_tasks after...
Arve Hjønnevåg [Wed, 2 Dec 2009 04:54:37 +0000 (20:54 -0800)]
PM: wakelock: Don't dump unfrozen task list when aborting try_to_freeze_tasks after less than one second

Change-Id: Ib2976e5b97a5ee4ec9abd4d4443584d9257d0941
Signed-off-by: Arve Hjønnevåg <arve@android.com>
13 years agoPM: wakelock: Abort task freezing if a wake lock is held.
Arve Hjønnevåg [Tue, 14 Oct 2008 23:02:39 +0000 (16:02 -0700)]
PM: wakelock: Abort task freezing if a wake lock is held.

Avoids a problem where the device sometimes hangs for 20 seconds
before the screen is turned on.

13 years agoPM: Add user-space wake lock api.
Arve Hjønnevåg [Fri, 10 Oct 2008 04:01:46 +0000 (21:01 -0700)]
PM: Add user-space wake lock api.

This adds /sys/power/wake_lock and /sys/power/wake_unlock.
Writing a string to wake_lock creates a wake lock the
first time is sees a string and locks it. Optionally, the
string can be followed by a timeout.
To unlock the wake lock, write the same string to wake_unlock.

Change-Id: I66c6e3fe6487d17f9c2fafde1174042e57d15cd7

13 years agoPM: Enable early suspend through /sys/power/state
Arve Hjønnevåg [Fri, 10 Oct 2008 02:17:11 +0000 (19:17 -0700)]
PM: Enable early suspend through /sys/power/state

If EARLYSUSPEND is enabled then writes to /sys/power/state no longer
blocks, and the kernel will try to enter the requested state every
time no wakelocks are held. Write "on" to resume normal operation.

13 years agoPM: Implement early suspend api
Arve Hjønnevåg [Wed, 8 Oct 2008 03:48:01 +0000 (20:48 -0700)]
PM: Implement early suspend api

13 years agoPM: wakelocks: Use seq_file for /proc/wakelocks so we can get more than 3K of stats.
Arve Hjønnevåg [Thu, 3 Dec 2009 02:22:00 +0000 (18:22 -0800)]
PM: wakelocks: Use seq_file for /proc/wakelocks so we can get more than 3K of stats.

Change-Id: I42ed8bea639684f7a8a95b2057516764075c6b01
Signed-off-by: Arve Hjønnevåg <arve@android.com>
13 years agopower: wakelocks: fix buffer overflow in print_wake_locks
Erik Gilling [Wed, 26 Aug 2009 03:09:12 +0000 (20:09 -0700)]
power: wakelocks: fix buffer overflow in print_wake_locks

Change-Id: Ic944e3b3d3bc53eddc6fd0963565fd072cac373c
Signed-off-by: Erik Gilling <konkers@android.com>
13 years agopower: Prevent spinlock recursion when wake_unlock() is called
Mike Chan [Wed, 26 Aug 2009 01:10:32 +0000 (18:10 -0700)]
power: Prevent spinlock recursion when wake_unlock() is called

Signed-off-by: Mike Chan <mike@android.com>
13 years agoPM: Implement wakelock api.
Arve Hjønnevåg [Wed, 10 Sep 2008 05:14:34 +0000 (22:14 -0700)]
PM: Implement wakelock api.

PM: wakelock: Replace expire work with a timer

The expire work function did not work in the normal case.

Signed-off-by: Arve Hjønnevåg <arve@android.com>
13 years agoPM: Add early suspend api.
Arve Hjønnevåg [Sat, 27 Sep 2008 05:10:56 +0000 (22:10 -0700)]
PM: Add early suspend api.

13 years agoPM: Add wake lock api.
Arve Hjønnevåg [Sat, 27 Sep 2008 05:10:56 +0000 (22:10 -0700)]
PM: Add wake lock api.

13 years ago[docs] android: Add android config documentation to boot framework.
Mike Chan [Thu, 22 Jan 2009 20:23:32 +0000 (12:23 -0800)]
[docs] android: Add android config documentation to boot framework.

Signed-off-by: Mike Chan <mike@android.com>
13 years agomtd: nand: Allow NAND chip ids to be included standalone.
Dima Zavin [Thu, 4 Dec 2008 20:19:57 +0000 (12:19 -0800)]
mtd: nand: Allow NAND chip ids to be included standalone.

Lets non-standard NAND drivers take advantage of known NAND
chip information.

Change-Id: I87e2fcb40b07b2ec91e102f1fa7f419a4b4af0a3
Signed-off-by: Dima Zavin <dima@android.com>
13 years agoMake /dev/mem configurable, as we don't want it.
Robert Love [Tue, 29 Apr 2008 20:44:10 +0000 (16:44 -0400)]
Make /dev/mem configurable, as we don't want it.

Signed-off-by: Brian Swetland <swetland@google.com>
13 years agosched: Enable might_sleep before initializing drivers.
Arve Hjønnevåg [Thu, 11 Dec 2008 04:06:28 +0000 (20:06 -0800)]
sched: Enable might_sleep before initializing drivers.

This allows detection of init bugs in built-in drivers.

Signed-off-by: Arve Hjønnevåg <arve@android.com>
13 years agoAdd build option to to set the default panic timeout.
Arve Hjønnevåg [Tue, 8 May 2007 08:39:13 +0000 (15:39 +0700)]
Add build option to to set the default panic timeout.

13 years ago[ARM] Optionally flush entire dcache from v6_dma_flush_range
Arve Hjønnevåg [Wed, 10 Jun 2009 03:17:45 +0000 (20:17 -0700)]
[ARM] Optionally flush entire dcache from v6_dma_flush_range

If CACHE_FLUSH_RANGE_LIMIT is defined, then the entire dcache will
be flushed if the requested range is larger than this limit.

Change-Id: I29277d645a9d6716b1952cf3b870c78496261dd0
Signed-off-by: Arve Hjønnevåg <arve@android.com>
13 years agomm: Add min_free_order_shift tunable.
Arve Hjønnevåg [Tue, 17 Feb 2009 22:51:02 +0000 (14:51 -0800)]
mm: Add min_free_order_shift tunable.

By default the kernel tries to keep half as much memory free at each
order as it does for one order below. This can be too agressive when
running without swap.

Change-Id: I5efc1a0b50f41ff3ac71e92d2efd175dedd54ead
Signed-off-by: Arve Hjønnevåg <arve@android.com>
13 years ago[ARM] avoid mis-detecting some V7 cores in the decompressor
Brian Swetland [Tue, 27 Jan 2009 01:15:49 +0000 (17:15 -0800)]
[ARM] avoid mis-detecting some V7 cores in the decompressor

This allows kernel decompress to happen nearly instantly instead
of taking over 20 seconds.

Signed-off-by: Brian Swetland <swetland@google.com>
13 years ago[ARM] armv6 dcc tty driver
Arve Hjønnevåg [Sun, 2 Dec 2007 02:34:14 +0000 (18:34 -0800)]
[ARM] armv6 dcc tty driver

Signed-off-by: Brian Swetland <swetland@google.com>
Signed-off-by: Arve Hjønnevåg <arve@android.com>
13 years agoARM: Make low-level printk work
Tony Lindgren [Mon, 9 May 2005 21:10:26 +0000 (14:10 -0700)]
ARM: Make low-level printk work

Makes low-level printk work.

Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoRevert "Staging: android: mark subsystem as broken"
Arve Hjønnevåg [Wed, 9 Dec 2009 04:37:55 +0000 (20:37 -0800)]
Revert "Staging: android: mark subsystem as broken"

This reverts commit 2cdf99ce2b9418c9d7c5f907195cfac421375520.

13 years agostaging/android: fix build issues
Corentin Chary [Sat, 28 Nov 2009 08:45:14 +0000 (09:45 +0100)]
staging/android: fix build issues

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
13 years agoRevert "Staging: android: delete android drivers"
Arve Hjønnevåg [Sat, 13 Feb 2010 04:32:37 +0000 (20:32 -0800)]
Revert "Staging: android: delete android drivers"

This reverts commit b0a0ccfad85b3657fe999805df65f5cfe634ab8a.

13 years agoLinux 3.0.8
Greg Kroah-Hartman [Tue, 25 Oct 2011 05:11:12 +0000 (07:11 +0200)]
Linux 3.0.8

13 years agohfsplus: Fix kfree of wrong pointers in hfsplus_fill_super() error path
Seth Forshee [Thu, 15 Sep 2011 14:48:27 +0000 (10:48 -0400)]
hfsplus: Fix kfree of wrong pointers in hfsplus_fill_super() error path

commit f588c960fcaa6fa8bf82930bb819c9aca4eb9347 upstream.

Commit 6596528e391a ("hfsplus: ensure bio requests are not smaller than
the hardware sectors") changed the pointers used for volume header
allocations but failed to free the correct pointers in the error path
path of hfsplus_fill_super() and hfsplus_read_wrapper.

The second hunk came from a separate patch by Pavel Ivanov.

Reported-by: Pavel Ivanov <paivanof@gmail.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Christoph Hellwig <hch@tuxera.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoALSA: hda - Add position_fix quirk for Dell Inspiron 1010
Takashi Iwai [Tue, 18 Oct 2011 08:44:05 +0000 (10:44 +0200)]
ALSA: hda - Add position_fix quirk for Dell Inspiron 1010

commit 051a8cb6550d917225ead1cd008b5966350f6d53 upstream.

The previous fix for the position-buffer check gives yet another
regression on a Dell laptop.  The safest fix right now is to add a
static quirk for this device (and better to apply it for stable
kernels too).

Reported-by: Éric Piel <Eric.Piel@tremplin-utc.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoALSA: HDA: conexant support for Lenovo T520/W520
Daniel Suchy [Tue, 18 Oct 2011 09:09:44 +0000 (11:09 +0200)]
ALSA: HDA: conexant support for Lenovo T520/W520

commit ca201c096269ee2d40037fea96a59fd0695888c4 upstream.

This is patch for Conexant codec of Intel HDA driver, adding new quirk
for Lenovo Thinkpad T520 and W520. Conexant autodetection works fine for
T520 (similar subsystem ID is used also in W520 model) and detects more
mixer features compared to generic (fallback) Lenovo quirk with
hardcoded options in Conexant codec.

Patch was activelly tested with Linux 3.0.4, 3.0.6 and 3.0.7 without any
problems.

Signed-off-by: Daniel Suchy <danny@danysek.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agocrypto: ghash - Avoid null pointer dereference if no key is set
Nick Bowler [Thu, 20 Oct 2011 12:16:55 +0000 (14:16 +0200)]
crypto: ghash - Avoid null pointer dereference if no key is set

commit 7ed47b7d142ec99ad6880bbbec51e9f12b3af74c upstream.

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>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agox25: Prevent skb overreads when checking call user data
Matthew Daley [Fri, 14 Oct 2011 18:45:05 +0000 (18:45 +0000)]
x25: Prevent skb overreads when checking call user data

commit 7f81e25befdfb3272345a2e775f520e1d515fa20 upstream.

x25_find_listener does not check that the amount of call user data given
in the skb is big enough in per-socket comparisons, hence buffer
overreads may occur.  Fix this by adding a check.

Signed-off-by: Matthew Daley <mattjd@gmail.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Andrew Hendry <andrew.hendry@gmail.com>
Acked-by: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agomm: fix race between mremap and removing migration entry
Hugh Dickins [Wed, 19 Oct 2011 19:50:35 +0000 (12:50 -0700)]
mm: fix race between mremap and removing migration entry

commit 486cf46f3f9be5f2a966016c1a8fe01e32cde09e upstream.

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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agohwmon: (w83627ehf) Fix negative 8-bit temperature values
Jean Delvare [Thu, 20 Oct 2011 07:06:45 +0000 (03:06 -0400)]
hwmon: (w83627ehf) Fix negative 8-bit temperature values

commit 133d324d82e144588939ad25b732b5b6c33b03d9 upstream.

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>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agox86: Fix S4 regression
Takashi Iwai [Sun, 23 Oct 2011 21:19:12 +0000 (23:19 +0200)]
x86: Fix S4 regression

commit 8548c84da2f47e71bbbe300f55edb768492575f7 upstream.

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: 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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agofirewire: sbp2: fix panic after rmmod with slow targets
Chris Boot [Mon, 22 Aug 2011 20:38:38 +0000 (21:38 +0100)]
firewire: sbp2: fix panic after rmmod with slow targets

commit 0278ccd9d53e07c4e699432b2fed9de6c56f506c upstream.

If firewire-sbp2 starts a login to a target that doesn't complete ORBs
in a timely manner (and has to retry the login), and the module is
removed before the operation times out, you end up with a null-pointer
dereference and a kernel panic.

[SR:  This happens because sbp2_target_get/put() do not maintain
module references.  scsi_device_get/put() do, but at occasions like
Chris describes one, nobody holds a reference to an SBP-2 sdev.]

This patch cancels pending work for each unit in sbp2_remove(), which
hopefully means there are no extra references around that prevent us
from unloading. This fixes my crash.

Signed-off-by: Chris Boot <bootc@bootc.net>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoxfs: revert to using a kthread for AIL pushing
Christoph Hellwig [Tue, 18 Oct 2011 14:23:19 +0000 (10:23 -0400)]
xfs: revert to using a kthread for AIL pushing

commit 0030807c66f058230bcb20d2573bcaf28852e804 upstream

Currently we have a few issues with the way the workqueue code is used to
implement AIL pushing:

 - it accidentally uses the same workqueue as the syncer action, and thus
   can be prevented from running if there are enough sync actions active
   in the system.
 - it doesn't use the HIGHPRI flag to queue at the head of the queue of
   work items

At this point I'm not confident enough in getting all the workqueue flags and
tweaks right to provide a perfectly reliable execution context for AIL
pushing, which is the most important piece in XFS to make forward progress
when the log fills.

Revert back to use a kthread per filesystem which fixes all the above issues
at the cost of having a task struct and stack around for each mounted
filesystem.  In addition this also gives us much better ways to diagnose
any issues involving hung AIL pushing and removes a small amount of code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Stefan Priebe <s.priebe@profihost.ag>
Tested-by: Stefan Priebe <s.priebe@profihost.ag>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoxfs: force the log if we encounter pinned buffers in .iop_pushbuf
Christoph Hellwig [Tue, 18 Oct 2011 14:23:18 +0000 (10:23 -0400)]
xfs: force the log if we encounter pinned buffers in .iop_pushbuf

commit 17b38471c3c07a49f0bbc2ecc2e92050c164e226 upstream

We need to check for pinned buffers even in .iop_pushbuf given that inode
items flush into the same buffers that may be pinned directly due operations
on the unlinked inode list operating directly on buffers.  To do this add a
return value to .iop_pushbuf that tells the AIL push about this and use
the existing log force mechanisms to unpin it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Stefan Priebe <s.priebe@profihost.ag>
Tested-by: Stefan Priebe <s.priebe@profihost.ag>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoxfs: do not update xa_last_pushed_lsn for locked items
Christoph Hellwig [Tue, 18 Oct 2011 14:23:17 +0000 (10:23 -0400)]
xfs: do not update xa_last_pushed_lsn for locked items

commit bc6e588a8971aa74c02e42db4d6e0248679f3738 upstream

If an item was locked we should not update xa_last_pushed_lsn and thus skip
it when restarting the AIL scan as we need to be able to lock and write it
out as soon as possible.  Otherwise heavy lock contention might starve AIL
pushing too easily, especially given the larger backoff once we moved
xa_last_pushed_lsn all the way to the target lsn.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Stefan Priebe <s.priebe@profihost.ag>
Tested-by: Stefan Priebe <s.priebe@profihost.ag>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoxfs: use a cursor for bulk AIL insertion
Dave Chinner [Tue, 18 Oct 2011 14:23:16 +0000 (10:23 -0400)]
xfs: use a cursor for bulk AIL insertion

commit 1d8c95a363bf8cd4d4182dd19c01693b635311c2 upstream

xfs: use a cursor for bulk AIL insertion

Delayed logging can insert tens of thousands of log items into the
AIL at the same LSN. When the committing of log commit records
occur, we can get insertions occurring at an LSN that is not at the
end of the AIL. If there are thousands of items in the AIL on the
tail LSN, each insertion has to walk the AIL to find the correct
place to insert the new item into the AIL. This can consume large
amounts of CPU time and block other operations from occurring while
the traversals are in progress.

To avoid this repeated walk, use a AIL cursor to record
where we should be inserting the new items into the AIL without
having to repeat the walk. The cursor infrastructure already
provides this functionality for push walks, so is a simple extension
of existing code. While this will not avoid the initial walk, it
will avoid repeating it tens of thousands of times during a single
checkpoint commit.

This version includes logic improvements from Christoph Hellwig.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoxfs: start periodic workers later
Christoph Hellwig [Tue, 18 Oct 2011 14:23:15 +0000 (10:23 -0400)]
xfs: start periodic workers later

commit 2bcf6e970f5a88fa05dced5eeb0326e13d93c4a1 upstream

Start the periodic sync workers only after we have finished xfs_mountfs
and thus fully set up the filesystem structures.  Without this we can
call into xfs_qm_sync before the quotainfo strucute is set up if the
mount takes unusually long, and probably hit other incomplete states
as well.

Also clean up the xfs_fs_fill_super error path by using consistent
label names, and removing an impossible to reach case.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Arkadiusz Miskiewicz <arekm@maven.pl>
Reviewed-by: Alex Elder <aelder@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoCIFS: Fix ERR_PTR dereference in cifs_get_root
Pavel Shilovsky [Sun, 21 Aug 2011 15:30:15 +0000 (19:30 +0400)]
CIFS: Fix ERR_PTR dereference in cifs_get_root

commit 5b980b01212199833ee8023770fa4cbf1b85e9f4 upstream.

move it to the beginning of the loop.

Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Cc: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agodrm/ttm: unbind ttm before destroying node in accel move cleanup
Ben Skeggs [Mon, 22 Aug 2011 03:15:04 +0000 (03:15 +0000)]
drm/ttm: unbind ttm before destroying node in accel move cleanup

commit eac2095398668f989a3dd8d00be1b87850d78c01 upstream.

Nouveau makes the assumption that if a TTM is bound there will be a mm_node
around for it and the backwards ordering here resulted in a use-after-free
on some eviction paths.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Cc: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agodrm/ttm: ensure ttm for new node is bound before calling move_notify()
Ben Skeggs [Mon, 22 Aug 2011 03:15:05 +0000 (03:15 +0000)]
drm/ttm: ensure ttm for new node is bound before calling move_notify()

commit 8d3bb23609d4ae22803a15d232289fc09a7b61c4 upstream.

This was true for new TTM_PL_SYSTEM and new TTM_PL_TT cases, but wasn't
the case on TTM_PL_SYSTEM<->TTM_PL_TT moves, which causes trouble on some
paths as nouveau's move_notify() hook requires that the dma addresses be
valid at this point.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Cc: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agohfsplus: ensure bio requests are not smaller than the hardware sectors
Seth Forshee [Mon, 18 Jul 2011 15:06:23 +0000 (08:06 -0700)]
hfsplus: ensure bio requests are not smaller than the hardware sectors

commit 6596528e391ad978a6a120142cba97a1d7324cb6 upstream.

Currently all bio requests are 512 bytes, which may fail for media
whose physical sector size is larger than this. Ensure these
requests are not smaller than the block device logical block size.

BugLink: http://bugs.launchpad.net/bugs/734883
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agouvcvideo: Fix crash when linking entities
Laurent Pinchart [Tue, 6 Sep 2011 22:16:18 +0000 (19:16 -0300)]
uvcvideo: Fix crash when linking entities

commit 4d9b2ebd335d83044b9e6656d0e604e8e1300334 upstream.

The uvc_mc_register_entity() function wrongfully selects the
media_entity associated with a UVC entity when creating links. This
results in access to uninitialized media_entity structures and can hit a
BUG_ON statement in media_entity_create_link(). Fix it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoHID: magicmouse: ignore 'ivalid report id' while switching modes, v2
Jiri Kosina [Thu, 25 Aug 2011 12:21:37 +0000 (14:21 +0200)]
HID: magicmouse: ignore 'ivalid report id' while switching modes, v2

commit 35d851df23b093ee027f827fed2213ae5e88fc7a upstream.

This is basically a more generic respin of 23746a6 ("HID: magicmouse: ignore
'ivalid report id' while switching modes") which got reverted later by
c3a492.

It turns out that on some configurations, this is actually still the case
and we are not able to detect in runtime.

The device reponds with 'invalid report id' when feature report switching it
into multitouch mode is sent to it.

This has been silently ignored before 0825411ade ("HID: bt: Wait for ACK
on Sent Reports"), but since this commit, it propagates -EIO from the _raw
callback .

So let the driver ignore -EIO as response to 0xd7,0x01 report, as that's
how the device reacts in normal mode.

Sad, but following reality.

This fixes https://bugzilla.kernel.org/show_bug.cgi?id=35022

Reported-by: Chase Douglas <chase.douglas@canonical.com>
Reported-by: Jaikumar Ganesh <jaikumarg@android.com>
Tested-by: Chase Douglas <chase.douglas@canonical.com>
Tested-by: Jaikumar Ganesh <jaikumarg@android.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cc: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoPlatform: fix samsung-laptop DMI identification for N150/N210/220/N230
Thomas Courbon [Wed, 20 Jul 2011 20:57:44 +0000 (22:57 +0200)]
Platform: fix samsung-laptop DMI identification for N150/N210/220/N230

commit 78a7539b881eb557494a7c810625c0307b27296c upstream.

Some samsung latop of the N150/N2{10,20,30} serie are badly detected by the samsung-laptop platform driver, see bug # 36082.
It appears that N230 identifies itself as N150/N210/N220/N230 whereas the other identify themselves as N150/N210/220.
This patch attemtp fix #36082 allowing correct identification for all the said netbook model.

Reported-by: Daniel Eklöf <daniel@ekloef.se>
Signed-off-by: Thomas Courbon <thcourbon@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Cc: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agofuse: fix memory leak
Miklos Szeredi [Mon, 12 Sep 2011 07:38:03 +0000 (09:38 +0200)]
fuse: fix memory leak

commit 5dfcc87fd79dfb96ed155b524337dbd0da4f5993 upstream.

kmemleak is reporting that 32 bytes are being leaked by FUSE:

  unreferenced object 0xe373b270 (size 32):
  comm "fusermount", pid 1207, jiffies 4294707026 (age 2675.187s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<b05517d7>] kmemleak_alloc+0x27/0x50
    [<b0196435>] kmem_cache_alloc+0xc5/0x180
    [<b02455be>] fuse_alloc_forget+0x1e/0x20
    [<b0245670>] fuse_alloc_inode+0xb0/0xd0
    [<b01b1a8c>] alloc_inode+0x1c/0x80
    [<b01b290f>] iget5_locked+0x8f/0x1a0
    [<b0246022>] fuse_iget+0x72/0x1a0
    [<b02461da>] fuse_get_root_inode+0x8a/0x90
    [<b02465cf>] fuse_fill_super+0x3ef/0x590
    [<b019e56f>] mount_nodev+0x3f/0x90
    [<b0244e95>] fuse_mount+0x15/0x20
    [<b019d1bc>] mount_fs+0x1c/0xc0
    [<b01b5811>] vfs_kern_mount+0x41/0x90
    [<b01b5af9>] do_kern_mount+0x39/0xd0
    [<b01b7585>] do_mount+0x2e5/0x660
    [<b01b7966>] sys_mount+0x66/0xa0

This leak report is consistent and happens once per boot on
3.1.0-rc5-dirty.

This happens if a FORGET request is queued after the fuse device was
released.

Reported-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agocputimer: Cure lock inversion
Peter Zijlstra [Mon, 17 Oct 2011 09:50:30 +0000 (11:50 +0200)]
cputimer: Cure lock inversion

commit bcd5cff7216f9b2de0a148cc355eac199dc6f1cf upstream.

There's a lock inversion between the cputimer->lock and rq->lock;
notably the two callchains involved are:

 update_rlimit_cpu()
   sighand->siglock
   set_process_cpu_timer()
     cpu_timer_sample_group()
       thread_group_cputimer()
         cputimer->lock
         thread_group_cputime()
           task_sched_runtime()
             ->pi_lock
             rq->lock

 scheduler_tick()
   rq->lock
   task_tick_fair()
     update_curr()
       account_group_exec()
         cputimer->lock

Where the first one is enabling a CLOCK_PROCESS_CPUTIME_ID timer, and
the second one is keeping up-to-date.

This problem was introduced by e8abccb7193 ("posix-cpu-timers: Cure
SMP accounting oddities").

Cure the problem by removing the cputimer->lock and rq->lock nesting,
this leaves concurrent enablers doing duplicate work, but the time
wasted should be on the same order otherwise wasted spinning on the
lock and the greater-than assignment filter should ensure we preserve
monotonicity.

Reported-by: Dave Jones <davej@redhat.com>
Reported-by: Simon Kirby <sim@hostway.ca>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Link: http://lkml.kernel.org/r/1318928713.21167.4.camel@twins
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agodrm/radeon/kms/atom: fix handling of FB scratch indices
Alex Deucher [Wed, 19 Oct 2011 00:10:05 +0000 (20:10 -0400)]
drm/radeon/kms/atom: fix handling of FB scratch indices

commit 5a6e8482a16e61250a9121fc9ec719ab0529e760 upstream.

FB scratch indices are dword indices, but we were treating
them as byte indices.  As such, we were getting the wrong
FB scratch data for non-0 indices.  Fix the indices and
guard the indexing against indices larger than the scratch
allocation.

Fixes memory corruption on some boards if data was written
past the end of the FB scratch array.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reported-by: Dave Airlie <airlied@redhat.com>
Tested-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoAvoid using variable-length arrays in kernel/sys.c
Linus Torvalds [Mon, 17 Oct 2011 15:24:24 +0000 (08:24 -0700)]
Avoid using variable-length arrays in kernel/sys.c

commit a84a79e4d369a73c0130b5858199e949432da4c6 upstream.

The size is always valid, but variable-length arrays generate worse code
for no good reason (unless the function happens to be inlined and the
compiler sees the length for the simple constant it is).

Also, there seems to be some code generation problem on POWER, where
Henrik Bakken reports that register r28 can get corrupted under some
subtle circumstances (interrupt happening at the wrong time?).  That all
indicates some seriously broken compiler issues, but since variable
length arrays are bad regardless, there's little point in trying to
chase it down.

"Just don't do that, then".

Reported-by: Henrik Grindal Bakken <henribak@cisco.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agohwmon: (w83627ehf) Properly report thermal diode sensors
Jean Delvare [Thu, 13 Oct 2011 19:49:08 +0000 (15:49 -0400)]
hwmon: (w83627ehf) Properly report thermal diode sensors

commit bf164c58e58328c40ebc597a8ac00cc6840f9703 upstream.

The w83627ehf driver is improperly reporting thermal diode sensors as
type 2, instead of 3. This caused "sensors" and possibly other
monitoring tools to report these sensors as "transistor" instead of
"thermal diode".

Furthermore, diode subtype selection (CPU vs. external) is only
supported by the original W83627EHF/EHG. All later models only support
CPU diode type, and some (NCT6776F) don't even have the register in
question so we should avoid reading from it.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoHID: usbhid: Add support for SiGma Micro chip
Jeremiah Matthey [Tue, 23 Aug 2011 07:44:30 +0000 (09:44 +0200)]
HID: usbhid: Add support for SiGma Micro chip

commit f5e4282586dc0c9dab8c7d32e6c43aa07f68586b upstream.

Patch to add SiGma Micro-based keyboards (1c4f:0002) to hid-quirks.

These keyboards dont seem to allow the records to be initialized, and hence a
timeout occurs when the usbhid driver attempts to initialize them. The patch
just adds the signature for these keyboards to the hid-quirks list with the
setting HID_QUIRK_NO_INIT_REPORTS. This removes the 5-10 second wait for the
timeout to occur.

Signed-off-by: Jeremiah Matthey <sprg86@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoARM: 7117/1: perf: fix HW_CACHE_* events on Cortex-A9
Will Deacon [Mon, 3 Oct 2011 17:30:53 +0000 (18:30 +0100)]
ARM: 7117/1: perf: fix HW_CACHE_* events on Cortex-A9

commit 29a541f6c1f6e4a85628bb86071b9e72c9f8be2c upstream.

Using COHERENT_LINE_{MISS,HIT} for cache misses and references
respectively is completely wrong. Instead, use the L1D events which
are a better and more useful approximation despite ignoring instruction
traffic.

Reported-by: Alasdair Grant <alasdair.grant@arm.com>
Reported-by: Matt Horsnell <matt.horsnell@arm.com>
Reported-by: Michael Williams <michael.williams@arm.com>
Cc: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoARM: 7113/1: mm: Align bank start to MAX_ORDER_NR_PAGES
Linus Walleij [Thu, 29 Sep 2011 08:37:23 +0000 (09:37 +0100)]
ARM: 7113/1: mm: Align bank start to MAX_ORDER_NR_PAGES

commit 002ea9eefec98dada56fd5f8e432a4e8570c2a26 upstream.

The VM subsystem assumes that there are valid memmap entries from
the bank start aligned to MAX_ORDER_NR_PAGES.

On the Ux500 we have a lot of mem=N arguments on the commandline
triggering this bug several times over and causing kernel
oops messages.

Cc: Michael Bohan <mbohan@codeaurora.org>
Cc: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Johan Palsson <johan.palsson@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoLinux 3.0.7
Greg Kroah-Hartman [Sun, 16 Oct 2011 21:15:11 +0000 (14:15 -0700)]
Linux 3.0.7

13 years agoe1000e: workaround for packet drop on 82579 at 100Mbps
Bruce Allan [Fri, 29 Jul 2011 05:52:56 +0000 (05:52 +0000)]
e1000e: workaround for packet drop on 82579 at 100Mbps

commit 0ed013e28fe853244f4972cf18d8e2bd62eeb8fc upstream.

The MAC can drop short packets when the PHY detects noise on the line at
100Mbps due to a timing issue.  Workaround the issue by increasing the PLL
counter so the PHY properly recognizes the synchronization pattern from the
MAC.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: Leann Ogasawara <leann.ogasawara@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoftrace: Fix warning when CONFIG_FUNCTION_TRACER is not defined
Steven Rostedt [Mon, 11 Jul 2011 14:12:59 +0000 (10:12 -0400)]
ftrace: Fix warning when CONFIG_FUNCTION_TRACER is not defined

commit 04da85b86188f224cc9b391b5bdd92a3ba20ffcf upstream.

The struct ftrace_hash was declared within CONFIG_FUNCTION_TRACER
but was referenced outside of it.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
13 years agoftrace: Fix regression where ftrace breaks when modules are loaded
Steven Rostedt [Fri, 15 Jul 2011 03:02:27 +0000 (23:02 -0400)]
ftrace: Fix regression where ftrace breaks when modules are loaded

commit f7bc8b61f65726ff98f52e286b28e294499d7a08 upstream.

Enabling function tracer to trace all functions, then load a module and
then disable function tracing will cause ftrace to fail.

This can also happen by enabling function tracing on the command line:

  ftrace=function

and during boot up, modules are loaded, then you disable function tracing
with 'echo nop > current_tracer' you will trigger a bug in ftrace that
will shut itself down.

The reason is, the new ftrace code keeps ref counts of all ftrace_ops that
are registered for tracing. When one or more ftrace_ops are registered,
all the records that represent the functions that the ftrace_ops will
trace have a ref count incremented. If this ref count is not zero,
when the code modification runs, that function will be enabled for tracing.
If the ref count is zero, that function will be disabled from tracing.

To make sure the accounting was working, FTRACE_WARN_ON()s were added
to updating of the ref counts.

If the ref count hits its max (> 2^30 ftrace_ops added), or if
the ref count goes below zero, a FTRACE_WARN_ON() is triggered which
disables all modification of code.

Since it is common for ftrace_ops to trace all functions in the kernel,
instead of creating > 20,000 hash items for the ftrace_ops, the hash
count is just set to zero, and it represents that the ftrace_ops is
to trace all functions. This is where the issues arrise.

If you enable function tracing to trace all functions, and then add
a module, the modules function records do not get the ref count updated.
When the function tracer is disabled, all function records ref counts
are subtracted. Since the modules never had their ref counts incremented,
they go below zero and the FTRACE_WARN_ON() is triggered.

The solution to this is rather simple. When modules are loaded, and
their functions are added to the the ftrace pool, look to see if any
ftrace_ops are registered that trace all functions. And for those,
update the ref count for the module function records.

Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
13 years agoftrace: Fix regression of :mod:module function enabling
Steven Rostedt [Thu, 7 Jul 2011 15:09:22 +0000 (11:09 -0400)]
ftrace: Fix regression of :mod:module function enabling

commit 43dd61c9a09bd413e837df829e6bfb42159be52a upstream.

The new code that allows different utilities to pick and choose
what functions they trace broke the :mod: hook that allows users
to trace only functions of a particular module.

The reason is that the :mod: hook bypasses the hash that is setup
to allow individual users to trace their own functions and uses
the global hash directly. But if the global hash has not been
set up, it will cause a bug:

echo '*:mod:radeon' > /sys/kernel/debug/set_ftrace_filter

produces:

 [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
 [drm:radeon_crtc_page_flip] *ERROR* failed to reserve new rbo buffer before flip
 BUG: unable to handle kernel paging request at ffffffff8160ec90
 IP: [<ffffffff810d9136>] add_hash_entry+0x66/0xd0
 PGD 1a05067 PUD 1a09063 PMD 80000000016001e1
 Oops: 0003 [#1] SMP Jul  7 04:02:28 phyllis kernel: [55303.858604] CPU 1
 Modules linked in: cryptd aes_x86_64 aes_generic binfmt_misc rfcomm bnep ip6table_filter hid radeon r8169 ahci libahci mii ttm drm_kms_helper drm video i2c_algo_bit intel_agp intel_gtt

 Pid: 10344, comm: bash Tainted: G        WC  3.0.0-rc5 #1 Dell Inc. Inspiron N5010/0YXXJJ
 RIP: 0010:[<ffffffff810d9136>]  [<ffffffff810d9136>] add_hash_entry+0x66/0xd0
 RSP: 0018:ffff88003a96bda8  EFLAGS: 00010246
 RAX: ffff8801301735c0 RBX: ffffffff8160ec80 RCX: 0000000000306ee0
 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880137c92940
 RBP: ffff88003a96bdb8 R08: ffff880137c95680 R09: 0000000000000000
 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff81c9df78
 R13: ffff8801153d1000 R14: 0000000000000000 R15: 0000000000000000
 FS: 00007f329c18a700(0000) GS:ffff880137c80000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: ffffffff8160ec90 CR3: 000000003002b000 CR4: 00000000000006e0
 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
 Process bash (pid: 10344, threadinfo ffff88003a96a000, task ffff88012fcfc470)
 Stack:
  0000000000000fd0 00000000000000fc ffff88003a96be38 ffffffff810d92f5
  ffff88011c4c4e00 ffff880000000000 000000000b69f4d0 ffffffff8160ec80
  ffff8800300e6f06 0000000081130295 0000000000000282 ffff8800300e6f00
 Call Trace:
  [<ffffffff810d92f5>] match_records+0x155/0x1b0
  [<ffffffff810d940c>] ftrace_mod_callback+0xbc/0x100
  [<ffffffff810dafdf>] ftrace_regex_write+0x16f/0x210
  [<ffffffff810db09f>] ftrace_filter_write+0xf/0x20
  [<ffffffff81166e48>] vfs_write+0xc8/0x190
  [<ffffffff81167001>] sys_write+0x51/0x90
  [<ffffffff815c7e02>] system_call_fastpath+0x16/0x1b
 Code: 48 8b 33 31 d2 48 85 f6 75 33 49 89 d4 4c 03 63 08 49 8b 14 24 48 85 d2 48 89 10 74 04 48 89 42 08 49 89 04 24 4c 89 60 08 31 d2
 RIP [<ffffffff810d9136>] add_hash_entry+0x66/0xd0
  RSP <ffff88003a96bda8>
 CR2: ffffffff8160ec90
 ---[ end trace a5d031828efdd88e ]---

Reported-by: Brian Marete <marete@toshnix.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoMIPS: PM: Use struct syscore_ops instead of sysdevs for PM (v2)
Rafael J. Wysocki [Thu, 2 Jun 2011 19:06:48 +0000 (21:06 +0200)]
MIPS: PM: Use struct syscore_ops instead of sysdevs for PM (v2)

commit bd7100099a46b59f433dd15ad60adbb4d4f3d625 upstream.

Convert some MIPS architecture's code to using struct syscore_ops
objects for power management instead of sysdev classes and sysdevs.

This simplifies the code and reduces the kernel's memory footprint.
It also is necessary for removing sysdevs from the kernel entirely in
the future.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-and-tested-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: linux-kernel@vger.kernel.org
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Patchwork: http://patchwork.linux-mips.org/patch/2431/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoahci: Enable SB600 64bit DMA on Asus M3A
Mark Nelson [Mon, 27 Jun 2011 06:33:44 +0000 (16:33 +1000)]
ahci: Enable SB600 64bit DMA on Asus M3A

commit 3c4aa91f21f65b7b40bdfb015eacbcb8453ccae2 upstream.

Like e65cc194f7628ecaa02462f22f42fb09b50dcd49 this patch enables 64bit DMA
for the AHCI SATA controller of a board that has the SB600 southbridge. In
this case though we're enabling 64bit DMA for the Asus M3A motherboard. It
is a new enough board that all of the BIOS releases since the initial
release (0301 from 2007-10-22) work correctly with 64bit DMA enabled.

Signed-off-by: Mark Nelson <mdnelson8@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoipv6: fix NULL dereference in udp6_ufo_fragment()
Jason Wang [Sun, 9 Oct 2011 02:56:44 +0000 (10:56 +0800)]
ipv6: fix NULL dereference in udp6_ufo_fragment()

This patch fixes the issue caused by ef81bb40bf15f350fe865f31fa42f1082772a576
which is a backport of upstream 87c48fa3b4630905f98268dde838ee43626a060c. The
problem does not exist in upstream.

We do not check whether route is attached before trying to assign ip
identification through route dest which lead NULL pointer dereference. This
happens when host bridge transmit a packet from guest.

This patch changes ipv6_select_ident() to accept in6_addr as its paramter and
fix the issue by using the destination address in ipv6 header when no route is
attached.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agodrm/radeon/kms: use hardcoded dig encoder to transmitter mapping for DCE4.1
Alex Deucher [Wed, 5 Oct 2011 22:36:50 +0000 (18:36 -0400)]
drm/radeon/kms: use hardcoded dig encoder to transmitter mapping for DCE4.1

commit cb7cf41961fe10773c491c75ae73539ad4bbed66 upstream.

The encoders are supposedly fully routeable, but changing the mapping
doesn't always seem to take.  Using a hardcoded mapping is much more
reliable.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=41366

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Tested-by: Simon Farnsworth <simon.farnsworth@onelan.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agodrm/radeon/kms: retry aux transactions if there are status flags
Alex Deucher [Tue, 4 Oct 2011 21:23:15 +0000 (17:23 -0400)]
drm/radeon/kms: retry aux transactions if there are status flags

commit 4f332844cc87c5f99c5300f788abbe8a8c731390 upstream.

If there are error flags in the aux status, retry the transaction.
This makes aux much more reliable, especially on llano systems.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoARM: mach-ux500: enable fix for ARM errata 754322
srinidhi kasagar [Tue, 20 Sep 2011 05:45:46 +0000 (11:15 +0530)]
ARM: mach-ux500: enable fix for ARM errata 754322

commit 98e87d57aab9b1594f9cc53a386fcb6f2f2ba6e2 upstream.

This applies ARM errata fix 754322 for all ux500 platforms.

Signed-off-by: srinidhi kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoexec: do not call request_module() twice from search_binary_handler()
Tetsuo Handa [Tue, 26 Jul 2011 23:08:41 +0000 (16:08 -0700)]
exec: do not call request_module() twice from search_binary_handler()

commit 912193521b719fbfc2f16776febf5232fe8ba261 upstream.

Currently, search_binary_handler() tries to load binary loader module
using request_module() if a loader for the requested program is not yet
loaded.  But second attempt of request_module() does not affect the result
of search_binary_handler().

If request_module() triggered recursion, calling request_module() twice
causes 2 to the power of MAX_KMOD_CONCURRENT (= 50) repetitions.  It is
not an infinite loop but is sufficient for users to consider as a hang up.

Therefore, this patch changes not to call request_module() twice, making 1
to the power of MAX_KMOD_CONCURRENT repetitions in case of recursion.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: Richard Weinberger <richard@nod.at>
Tested-by: Richard Weinberger <richard@nod.at>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Maxim Uvarov <muvarov@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agommc: mxs-mmc: fix clock rate setting
Koen Beel [Fri, 15 Jul 2011 21:39:00 +0000 (17:39 -0400)]
mmc: mxs-mmc: fix clock rate setting

commit d982dcdc4e64eb1881df44b0035a8268bf1ab067 upstream.

Fix clock rate setting in the mxs-mmc driver. Previously, if div2 was 0
then the value for TIMING_CLOCK_RATE would have been 255 instead of 0.
The limits for div1 (TIMING_CLOCK_DIVIDE) and div2 (TIMING_CLOCK_RATE+1)
were also not correctly defined.

Can easily be reproduced on mx23evk: default clock for high speed sdio
cards is 50 MHz. With a SSP_CLK of 28.8 MHz default), this resulted in
an actual clock rate of about 56 kHz.  Tested on mx23evk.

Signed-off-by: Koen Beel <koen.beel@barco.com>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agodm table: avoid crash if integrity profile changes
Mike Snitzer [Sun, 25 Sep 2011 22:26:17 +0000 (23:26 +0100)]
dm table: avoid crash if integrity profile changes

commit 876fbba1db4a377f050a2bb49b474c7527b2995d upstream.

Commit a63a5cf (dm: improve block integrity support) introduced a
two-phase initialization of a DM device's integrity profile.  This
patch avoids dereferencing a NULL 'template_disk' pointer in
blk_integrity_register() if there is an integrity profile mismatch in
dm_table_set_integrity().

This can occur if the integrity profiles for stacked devices in a DM
table are changed between the call to dm_table_prealloc_integrity() and
dm_table_set_integrity().

Reported-by: Zdenek Kabelac <zkabelac@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agomd: Avoid waking up a thread after it has been freed.
NeilBrown [Wed, 21 Sep 2011 05:30:20 +0000 (15:30 +1000)]
md: Avoid waking up a thread after it has been freed.

commit 01f96c0a9922cd9919baf9d16febdf7016177a12 upstream.

Two related problems:

1/ some error paths call "md_unregister_thread(mddev->thread)"
   without subsequently clearing ->thread.  A subsequent call
   to mddev_unlock will try to wake the thread, and crash.

2/ Most calls to md_wakeup_thread are protected against the thread
   disappeared either by:
      - holding the ->mutex
      - having an active request, so something else must be keeping
        the array active.
   However mddev_unlock calls md_wakeup_thread after dropping the
   mutex and without any certainty of an active request, so the
   ->thread could theoretically disappear.
   So we need a spinlock to provide some protections.

So change md_unregister_thread to take a pointer to the thread
pointer, and ensure that it always does the required locking, and
clears the pointer properly.

Reported-by: "Moshe Melnikov" <moshe@zadarastorage.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agolibsas: fix panic when single phy is disabled on a wide port
Mark Salyzyn [Thu, 22 Sep 2011 15:32:23 +0000 (08:32 -0700)]
libsas: fix panic when single phy is disabled on a wide port

commit a73914c35b05d80f8ce78288e10056c91090b666 upstream.

When a wide port is being utilized to a target, if one disables only one
of the
phys, we get an OS crash:

BUG: unable to handle kernel NULL pointer dereference at
0000000000000238
IP: [<ffffffff814ca9b1>] mutex_lock+0x21/0x50
PGD 4103f5067 PUD 41dba9067 PMD 0
Oops: 0002 [#1] SMP
last sysfs file: /sys/bus/pci/slots/5/address
CPU 0
Modules linked in: pm8001(U) ses enclosure fuse nfsd exportfs autofs4
ipmi_devintf ipmi_si ipmi_msghandler nfs lockd fscache nfs_acl
auth_rpcgss 8021q fcoe libfcoe garp libfc scsi_transport_fc stp scsi_tgt
llc sunrpc cpufreq_ondemand acpi_cpufreq freq_table ipv6 sr_mod cdrom
dm_mirror dm_region_hash dm_log uinput sg i2c_i801 i2c_core iTCO_wdt
iTCO_vendor_support e1000e mlx4_ib ib_mad ib_core mlx4_en mlx4_core ext3
jbd mbcache sd_mod crc_t10dif usb_storage ata_generic pata_acpi ata_piix
libsas(U) scsi_transport_sas dm_mod [last unloaded: pm8001]

Modules linked in: pm8001(U) ses enclosure fuse nfsd exportfs autofs4
ipmi_devintf ipmi_si ipmi_msghandler nfs lockd fscache nfs_acl
auth_rpcgss 8021q fcoe libfcoe garp libfc scsi_transport_fc stp scsi_tgt
llc sunrpc cpufreq_ondemand acpi_cpufreq freq_table ipv6 sr_mod cdrom
dm_mirror dm_region_hash dm_log uinput sg i2c_i801 i2c_core iTCO_wdt
iTCO_vendor_support e1000e mlx4_ib ib_mad ib_core mlx4_en mlx4_core ext3
jbd mbcache sd_mod crc_t10dif usb_storage ata_generic pata_acpi ata_piix
libsas(U) scsi_transport_sas dm_mod [last unloaded: pm8001]
Pid: 5146, comm: scsi_wq_5 Not tainted
2.6.32-71.29.1.el6.lustre.7.x86_64 #1 Storage Server
RIP: 0010:[<ffffffff814ca9b1>]  [<ffffffff814ca9b1>]
mutex_lock+0x21/0x50
RSP: 0018:ffff8803e4e33d30  EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000238 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8803e664c800 RDI: 0000000000000238
RBP: ffff8803e4e33d40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000238 R14: ffff88041acb7200 R15: ffff88041c51ada0
FS:  0000000000000000(0000) GS:ffff880028200000(0000)
knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 0000000000000238 CR3: 0000000410143000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process scsi_wq_5 (pid: 5146, threadinfo ffff8803e4e32000, task
ffff8803e4e294a0)
Stack:
 ffff8803e664c800 0000000000000000 ffff8803e4e33d70 ffffffffa001f06e
<0> ffff8803e4e33d60 ffff88041c51ada0 ffff88041acb7200 ffff88041bc0aa00
<0> ffff8803e4e33d90 ffffffffa0032b6c 0000000000000014 ffff88041acb7200
Call Trace:
 [<ffffffffa001f06e>] sas_port_delete_phy+0x2e/0xa0 [scsi_transport_sas]
 [<ffffffffa0032b6c>] sas_unregister_devs_sas_addr+0xac/0xe0 [libsas]
 [<ffffffffa0034914>] sas_ex_revalidate_domain+0x204/0x330 [libsas]
 [<ffffffffa00307f0>] ? sas_revalidate_domain+0x0/0x90 [libsas]
 [<ffffffffa0030855>] sas_revalidate_domain+0x65/0x90 [libsas]
 [<ffffffff8108c7d0>] worker_thread+0x170/0x2a0
 [<ffffffff81091ea0>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff8108c660>] ? worker_thread+0x0/0x2a0
 [<ffffffff81091b36>] kthread+0x96/0xa0
 [<ffffffff810141ca>] child_rip+0xa/0x20
 [<ffffffff81091aa0>] ? kthread+0x0/0xa0
 [<ffffffff810141c0>] ? child_rip+0x0/0x20
Code: ff ff 85 c0 75 ed eb d6 66 90 55 48 89 e5 48 83 ec 10 48 89 1c 24
4c 89 64 24 08 0f 1f 44 00 00 48 89 fb e8 92 f4 ff ff 48 89 df <f0> ff
0f 79 05 e8 25 00 00 00 65 48 8b 04 25 08 cc 00 00 48 2d
RIP  [<ffffffff814ca9b1>] mutex_lock+0x21/0x50
 RSP <ffff8803e4e33d30>
CR2: 0000000000000238

The following patch is admittedly a band-aid, and does not solve the
root cause, but it still is a good candidate for hardening as a pointer
check before reference.

Signed-off-by: Mark Salyzyn <mark_salyzyn@us.xyratex.com>
Tested-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoqla2xxx: Fix crash in qla2x00_abort_all_cmds() on unload
Roland Dreier [Thu, 22 Sep 2011 07:06:05 +0000 (00:06 -0700)]
qla2xxx: Fix crash in qla2x00_abort_all_cmds() on unload

commit 9bfacd01dc9b7519e1e6da12b01963550b9d09a2 upstream.

I hit a crash in qla2x00_abort_all_cmds() if the qla2xxx module is
unloaded right after it is loaded.  I debugged this down to the abort
handling improperly treating a command of type SRB_ADISC_CMD as if it
had a bsg_job to complete when that command actually uses the iocb_cmd
part of the union.  (I guess to hit this one has to unload the module
while the async FC initialization is still in progress)

It seems we should only look for a bsg_job if type is SRB_ELS_CMD_RPT,
SRB_ELS_CMD_HST or SRB_CT_CMD, so switch the test to make that explicit.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Acked-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agox86/PCI: use host bridge _CRS info on ASUS M2V-MX SE
Paul Menzel [Wed, 31 Aug 2011 15:07:10 +0000 (17:07 +0200)]
x86/PCI: use host bridge _CRS info on ASUS M2V-MX SE

commit 29cf7a30f8a0ce4af2406d93d5a332099be26923 upstream.

In summary, this DMI quirk uses the _CRS info by default for the ASUS
M2V-MX SE by turning on `pci=use_crs` and is similar to the quirk
added by commit 2491762cfb47 ("x86/PCI: use host bridge _CRS info on
ASRock ALiveSATA2-GLAN") whose commit message should be read for further
information.

Since commit 3e3da00c01d0 ("x86/pci: AMD one chain system to use pci
read out res") Linux gives the following oops:

    parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE]
    HDA Intel 0000:20:01.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
    HDA Intel 0000:20:01.0: setting latency timer to 64
    BUG: unable to handle kernel paging request at ffffc90011c08000
    IP: [<ffffffffa0578402>] azx_probe+0x3ad/0x86b [snd_hda_intel]
    PGD 13781a067 PUD 13781b067 PMD 1300ba067 PTE 800000fd00000173
    Oops: 0009 [#1] SMP
    last sysfs file: /sys/module/snd_pcm/initstate
    CPU 0
    Modules linked in: snd_hda_intel(+) snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event tpm_tis tpm snd_seq tpm_bios psmouse parport_pc snd_timer snd_seq_device parport processor evdev snd i2c_viapro thermal_sys amd64_edac_mod k8temp i2c_core soundcore shpchp pcspkr serio_raw asus_atk0110 pci_hotplug edac_core button snd_page_alloc edac_mce_amd ext3 jbd mbcache sha256_generic cryptd aes_x86_64 aes_generic cbc dm_crypt dm_mod raid1 md_mod usbhid hid sg sd_mod crc_t10dif sr_mod cdrom ata_generic uhci_hcd sata_via pata_via libata ehci_hcd usbcore scsi_mod via_rhine mii nls_base [last unloaded: scsi_wait_scan]
    Pid: 1153, comm: work_for_cpu Not tainted 2.6.37-1-amd64 #1 M2V-MX SE/System Product Name
    RIP: 0010:[<ffffffffa0578402>]  [<ffffffffa0578402>] azx_probe+0x3ad/0x86b [snd_hda_intel]
    RSP: 0018:ffff88013153fe50  EFLAGS: 00010286
    RAX: ffffc90011c08000 RBX: ffff88013029ec00 RCX: 0000000000000006
    RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246
    RBP: ffff88013341d000 R08: 0000000000000000 R09: 0000000000000040
    R10: 0000000000000286 R11: 0000000000003731 R12: ffff88013029c400
    R13: 0000000000000000 R14: 0000000000000000 R15: ffff88013341d090
    FS:  0000000000000000(0000) GS:ffff8800bfc00000(0000) knlGS:00000000f7610ab0
    CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
    CR2: ffffc90011c08000 CR3: 0000000132f57000 CR4: 00000000000006f0
    DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
    Process work_for_cpu (pid: 1153, threadinfo ffff88013153e000, task ffff8801303c86c0)
    Stack:
     0000000000000005 ffffffff8123ad65 00000000000136c0 ffff88013029c400
     ffff8801303c8998 ffff88013341d000 ffff88013341d090 ffff8801322d9dc8
     ffff88013341d208 0000000000000000 0000000000000000 ffffffff811ad232
    Call Trace:
     [<ffffffff8123ad65>] ? __pm_runtime_set_status+0x162/0x186
     [<ffffffff811ad232>] ? local_pci_probe+0x49/0x92
     [<ffffffff8105afc5>] ? do_work_for_cpu+0x0/0x1b
     [<ffffffff8105afc5>] ? do_work_for_cpu+0x0/0x1b
     [<ffffffff8105afd0>] ? do_work_for_cpu+0xb/0x1b
     [<ffffffff8105fd3f>] ? kthread+0x7a/0x82
     [<ffffffff8100a824>] ? kernel_thread_helper+0x4/0x10
     [<ffffffff8105fcc5>] ? kthread+0x0/0x82
     [<ffffffff8100a820>] ? kernel_thread_helper+0x0/0x10
    Code: f4 01 00 00 ef 31 f6 48 89 df e8 29 dd ff ff 85 c0 0f 88 2b 03 00 00 48 89 ef e8 b4 39 c3 e0 8b 7b 40 e8 fc 9d b1 e0 48 8b 43 38 <66> 8b 10 66 89 14 24 8b 43 14 83 e8 03 83 f8 01 77 32 31 d2 be
    RIP  [<ffffffffa0578402>] azx_probe+0x3ad/0x86b [snd_hda_intel]
     RSP <ffff88013153fe50>
    CR2: ffffc90011c08000
    ---[ end trace 8d1f3ebc136437fd ]---

Trusting the ACPI _CRS information (`pci=use_crs`) fixes this problem.

    $ dmesg | grep -i crs # with the quirk
    PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug

The match has to be against the DMI board entries though since the vendor entries are not populated.

    DMI: System manufacturer System Product Name/M2V-MX SE, BIOS 0304    10/30/2007

This quirk should be removed when `pci=use_crs` is enabled for machines
from 2006 or earlier or some other solution is implemented.

Using coreboot [1] with this board the problem does not exist but this
quirk also does not affect it either. To be safe though the check is
tightened to only take effect when the BIOS from American Megatrends is
used.

        15:13 < ruik> but coreboot does not need that
        15:13 < ruik> because i have there only one root bus
        15:13 < ruik> the audio is behind a bridge

        $ sudo dmidecode
        BIOS Information
                Vendor: American Megatrends Inc.
                Version: 0304
                Release Date: 10/30/2007

[1] http://www.coreboot.org/

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=30552

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: x86@kernel.org
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agort2x00: Serialize TX operations on a queue.
Gertjan van Wingerde [Wed, 6 Jul 2011 20:56:24 +0000 (22:56 +0200)]
rt2x00: Serialize TX operations on a queue.

commit 77a861c405da75d81e9e6e32c50eb7f9777777e8 upstream.

The rt2x00 driver gets frequent occurrences of the following error message
when operating under load:
phy0 -> rt2x00queue_write_tx_frame: Error - Arrived at non-free entry in the
non-full queue 2.

This is caused by simultaneous attempts from mac80211 to send a frame via
rt2x00, which are not properly serialized inside rt2x00queue_write_tx_frame,
causing the second frame to fail sending with the above mentioned error
message.

Fix this by introducing a per-queue spinlock to serialize the TX operations
on that queue.

Reported-by: Andreas Hartmann <andihartmann@01019freenet.de>
Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoptp: fix L2 event message recognition
Richard Cochran [Tue, 20 Sep 2011 01:25:41 +0000 (01:25 +0000)]
ptp: fix L2 event message recognition

commit f75159e9936143177b442afc78150b7a7ad8aa07 upstream.

The IEEE 1588 standard defines two kinds of messages, event and general
messages. Event messages require time stamping, and general do not. When
using UDP transport, two separate ports are used for the two message
types.

The BPF designed to recognize event messages incorrectly classifies L2
general messages as event messages. This commit fixes the issue by
extending the filter to check the message type field for L2 PTP packets.
Event messages are be distinguished from general messages by testing
the "general" bit.

Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agodrm/radeon/kms: fix channel_remap setup (v2)
Alex Deucher [Tue, 4 Oct 2011 14:46:34 +0000 (10:46 -0400)]
drm/radeon/kms: fix channel_remap setup (v2)

commit 12d5180bd7e683a4ae80830b82ba67e7b7fac7b2 upstream.

Most asics just use the hw default value which requires
no explicit programming.  For those that need a different
value, the vbios will program it properly.  As such,
there's no need to program these registers explicitly
in the driver.  Changing MC_SHARED_CHREMAP requires a reload
of all data in vram otherwise its contents will be scambled.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=40103

v2: drop now unused channel_remap functions.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agodrm/radeon/kms: add retry limits for native DP aux defer
Alex Deucher [Mon, 3 Oct 2011 13:13:46 +0000 (09:13 -0400)]
drm/radeon/kms: add retry limits for native DP aux defer

commit 6375bda073724ead7df08746866b724b1799a295 upstream.

The previous code could potentially loop forever.  Limit
the number of DP aux defer retries to 4 for native aux
transactions, same as i2c over aux transactions.

Noticed by: Brad Campbell <lists2009@fnarfbargle.com>

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Brad Campbell <lists2009@fnarfbargle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agodrm/radeon/kms: fix regression in DP aux defer handling
Alex Deucher [Mon, 3 Oct 2011 13:13:45 +0000 (09:13 -0400)]
drm/radeon/kms: fix regression in DP aux defer handling

commit 109bc10d30f33e84f1d7289f0039e0c858ade82f upstream.

An incorrect ordering in the error checking code lead
to DP aux defer being skipped in the aux native write
path.  Move the bytes transferred check (ret == 0)
below the defer check.

Tracked down by: Brad Campbell <brad@fnarfbargle.com>

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=41121

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Brad Campbell <brad@fnarfbargle.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agodrm/radeon/kms: Fix logic error in DP HPD handler
Alex Deucher [Mon, 3 Oct 2011 12:37:33 +0000 (08:37 -0400)]
drm/radeon/kms: Fix logic error in DP HPD handler

commit 5ba7ddf81634bfdf32d09261d2959e3f5b7c4263 upstream.

Only disable the pipe if the monitor is physically
disconnected.  The previous logic also disabled the
pipe if the link was trained.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=41248

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agodrm/radeon: Update AVIVO cursor coordinate origin before x/yorigin calculation.
Michel Dänzer [Fri, 30 Sep 2011 15:16:52 +0000 (17:16 +0200)]
drm/radeon: Update AVIVO cursor coordinate origin before x/yorigin calculation.

commit b8aee294d89502469f2d80ae6afb93398d8227e0 upstream.

Fixes cursor disappearing prematurely when moving off a top/left edge which
is not located at the desktop top/left edge.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoASoC: Fix setting update bits for WM8753_LADC and WM8753_RADC
Axel Lin [Sun, 2 Oct 2011 12:41:04 +0000 (20:41 +0800)]
ASoC: Fix setting update bits for WM8753_LADC and WM8753_RADC

commit 21d17dd2a377ba894f26989915eb3c6e427a3656 upstream.

Current code set update bits for WM8753_LDAC and WM8753_RDAC twice,
but missed setting update bits for WM8753_LADC and WM8753_RADC.

I think it is a copy-paste bug in commit 776065
"ASoC: codecs: wm8753: Fix register cache incoherency".

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoASoC: use a valid device for dev_err() in Zylonite
Arnd Bergmann [Sat, 1 Oct 2011 20:03:34 +0000 (22:03 +0200)]
ASoC: use a valid device for dev_err() in Zylonite

commit eff919ac0fc7565e71ffa35657c333dd8cdc0520 upstream.

A recent conversion has introduced references to &pdev->dev, which does
not actually exist in all the contexts it's used in.

Replace this with card->dev where necessary, in order to let
the driver build again.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agolis3: fix regression of HP DriveGuard with 8bit chip
Takashi Iwai [Tue, 4 Oct 2011 01:09:14 +0000 (18:09 -0700)]
lis3: fix regression of HP DriveGuard with 8bit chip

commit 05faadcf59507e8eea57ffbeea9cbb14c9a2ab3d upstream.

Commit 2a7fade7e03 ("hwmon: lis3: Power on corrections") caused a
regression on HP laptops with 8bit chip.  Writing CTRL2_BOOT_8B bit seems
clearing the BIOS setup, and no proper interrupt for DriveGuard will be
triggered any more.

Since the init code there is basically only for embedded devices, put a
pdata check so that the problematic initialization will be skipped for
hp_accel stuff.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Cc: Samu Onkalo <samu.p.onkalo@nokia.com>
Signed-off-by: Andrew Morton <akpm@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoposix-cpu-timers: Cure SMP wobbles
Peter Zijlstra [Thu, 1 Sep 2011 10:42:04 +0000 (12:42 +0200)]
posix-cpu-timers: Cure SMP wobbles

commit d670ec13178d0fd8680e6742a2bc6e04f28f87d8 upstream.

David reported:

  Attached below is a watered-down version of rt/tst-cpuclock2.c from
  GLIBC.  Just build it with "gcc -o test test.c -lpthread -lrt" or
  similar.

  Run it several times, and you will see cases where the main thread
  will measure a process clock difference before and after the nanosleep
  which is smaller than the cpu-burner thread's individual thread clock
  difference.  This doesn't make any sense since the cpu-burner thread
  is part of the top-level process's thread group.

  I've reproduced this on both x86-64 and sparc64 (using both 32-bit and
  64-bit binaries).

  For example:

  [davem@boricha build-x86_64-linux]$ ./test
  process: before(0.001221967) after(0.498624371) diff(497402404)
  thread:  before(0.000081692) after(0.498316431) diff(498234739)
  self:    before(0.001223521) after(0.001240219) diff(16698)
  [davem@boricha build-x86_64-linux]$

  The diff of 'process' should always be >= the diff of 'thread'.

  I make sure to wrap the 'thread' clock measurements the most tightly
  around the nanosleep() call, and that the 'process' clock measurements
  are the outer-most ones.

  ---
  #include <unistd.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <time.h>
  #include <fcntl.h>
  #include <string.h>
  #include <errno.h>
  #include <pthread.h>

  static pthread_barrier_t barrier;

  static void *chew_cpu(void *arg)
  {
  pthread_barrier_wait(&barrier);
  while (1)
  __asm__ __volatile__("" : : : "memory");
  return NULL;
  }

  int main(void)
  {
  clockid_t process_clock, my_thread_clock, th_clock;
  struct timespec process_before, process_after;
  struct timespec me_before, me_after;
  struct timespec th_before, th_after;
  struct timespec sleeptime;
  unsigned long diff;
  pthread_t th;
  int err;

  err = clock_getcpuclockid(0, &process_clock);
  if (err)
  return 1;

  err = pthread_getcpuclockid(pthread_self(), &my_thread_clock);
  if (err)
  return 1;

  pthread_barrier_init(&barrier, NULL, 2);
  err = pthread_create(&th, NULL, chew_cpu, NULL);
  if (err)
  return 1;

  err = pthread_getcpuclockid(th, &th_clock);
  if (err)
  return 1;

  pthread_barrier_wait(&barrier);

  err = clock_gettime(process_clock, &process_before);
  if (err)
  return 1;

  err = clock_gettime(my_thread_clock, &me_before);
  if (err)
  return 1;

  err = clock_gettime(th_clock, &th_before);
  if (err)
  return 1;

  sleeptime.tv_sec = 0;
  sleeptime.tv_nsec = 500000000;
  nanosleep(&sleeptime, NULL);

  err = clock_gettime(th_clock, &th_after);
  if (err)
  return 1;

  err = clock_gettime(my_thread_clock, &me_after);
  if (err)
  return 1;

  err = clock_gettime(process_clock, &process_after);
  if (err)
  return 1;

  diff = process_after.tv_nsec - process_before.tv_nsec;
  printf("process: before(%lu.%.9lu) after(%lu.%.9lu) diff(%lu)\n",
 process_before.tv_sec, process_before.tv_nsec,
 process_after.tv_sec, process_after.tv_nsec, diff);
  diff = th_after.tv_nsec - th_before.tv_nsec;
  printf("thread:  before(%lu.%.9lu) after(%lu.%.9lu) diff(%lu)\n",
 th_before.tv_sec, th_before.tv_nsec,
 th_after.tv_sec, th_after.tv_nsec, diff);
  diff = me_after.tv_nsec - me_before.tv_nsec;
  printf("self:    before(%lu.%.9lu) after(%lu.%.9lu) diff(%lu)\n",
 me_before.tv_sec, me_before.tv_nsec,
 me_after.tv_sec, me_after.tv_nsec, diff);

  return 0;
  }

This is due to us using p->se.sum_exec_runtime in
thread_group_cputime() where we iterate the thread group and sum all
data. This does not take time since the last schedule operation (tick
or otherwise) into account. We can cure this by using
task_sched_runtime() at the cost of having to take locks.

This also means we can (and must) do away with
thread_group_sched_runtime() since the modified thread_group_cputime()
is now more accurate and would deadlock when called from
thread_group_sched_runtime().

Aside of that it makes the function safe on 32 bit systems. The old
code added t->se.sum_exec_runtime unprotected. sum_exec_runtime is a
64bit value and could be changed on another cpu at the same time.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1314874459.7945.22.camel@twins
Tested-by: David Miller <davem@davemloft.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoide-disk: Fix request requeuing
Borislav Petkov [Mon, 3 Oct 2011 18:28:18 +0000 (14:28 -0400)]
ide-disk: Fix request requeuing

commit 2c8fc867602e385fd2abe76da0b6bda8ed907547 upstream.

Simon Kirby reported that on his RAID setup with idedisk underneath
the box OOMs after a couple of days of runtime. Running with
CONFIG_DEBUG_KMEMLEAK pointed to idedisk_prep_fn() which unconditionally
allocates an ide_cmd struct. However, ide_requeue_and_plug() can be
called more than once per request, either from the request issue or the
IRQ handler path and do blk_peek_request() ends up in idedisk_prep_fn()
repeatedly, allocating a struct ide_cmd everytime and "forgetting" the
previous pointer.

Make sure the code reuses the old allocated chunk.

Reported-and-tested-by: Simon Kirby <sim@hostway.ca>
Link: http://marc.info/?l=linux-kernel&m=131667641517919
Link: http://lkml.kernel.org/r/20110922072643.GA27232@hostway.ca
Signed-off-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agosched: Fix up wchan borkage
Simon Kirby [Fri, 23 Sep 2011 00:03:46 +0000 (17:03 -0700)]
sched: Fix up wchan borkage

commit 6ebbe7a07b3bc40b168d2afc569a6543c020d2e3 upstream.

Commit c259e01a1ec ("sched: Separate the scheduler entry for
preemption") contained a boo-boo wrecking wchan output. It forgot to
put the new schedule() function in the __sched section and thereby
doesn't get properly ignored for things like wchan.

Tested-by: Simon Kirby <sim@hostway.ca>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20110923000346.GA25425@hostway.ca
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agosched/rt: Migrate equal priority tasks to available CPUs
Shawn Bohrer [Mon, 12 Sep 2011 14:28:04 +0000 (09:28 -0500)]
sched/rt: Migrate equal priority tasks to available CPUs

commit 3be209a8e22cedafc1b6945608b7bb8d9887ab61 upstream.

Commit 43fa5460fe60dea5c610490a1d263415419c60f6 ("sched: Try not to
migrate higher priority RT tasks") also introduced a change in behavior
which keeps RT tasks on the same CPU if there is an equal priority RT
task currently running even if there are empty CPUs available.

This can cause unnecessary wakeup latencies, and can prevent the
scheduler from balancing all RT tasks across available CPUs.

This change causes an RT task to search for a new CPU if an equal
priority RT task is already running on wakeup.  Lower priority tasks
will still have to wait on higher priority tasks, but the system should
still balance out because there is always the possibility that if there
are both a high and low priority RT tasks on a given CPU that the high
priority task could wakeup while the low priority task is running and
force it to search for a better runqueue.

Signed-off-by: Shawn Bohrer <sbohrer@rgmadvisors.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Tested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1315837684-18733-1-git-send-email-sbohrer@rgmadvisors.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agosparc64: Force the execute bit in OpenFirmware's translation entries.
David S. Miller [Thu, 29 Sep 2011 19:18:59 +0000 (12:18 -0700)]
sparc64: Force the execute bit in OpenFirmware's translation entries.

In the OF 'translations' property, the template TTEs in the mappings
never specify the executable bit.  This is the case even though some
of these mappings are for OF's code segment.

Therefore, we need to force the execute bit on in every mapping.

This problem can only really trigger on Niagara/sun4v machines and the
history behind this is a little complicated.

Previous to sun4v, the sun4u TTE entries lacked a hardware execute
permission bit.  So OF didn't have to ever worry about setting
anything to handle executable pages.  Any valid TTE loaded into the
I-TLB would be respected by the chip.

But sun4v Niagara chips have a real hardware enforced executable bit
in their TTEs.  So it has to be set or else the I-TLB throws an
instruction access exception with type code 6 (protection violation).

We've been extremely fortunate to not get bitten by this in the past.

The best I can tell is that the OF's mappings for it's executable code
were mapped using permanent locked mappings on sun4v in the past.
Therefore, the fact that we didn't have the exec bit set in the OF
translations we would use did not matter in practice.

Thanks to Greg Onufer for helping me track this down.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoLinux 3.0.6
Greg Kroah-Hartman [Mon, 3 Oct 2011 20:25:23 +0000 (13:25 -0700)]
Linux 3.0.6

13 years agoRevert "drm/radeon/kms: fix typo in r100_blit_copy"
Dave Airlie [Fri, 23 Sep 2011 13:00:54 +0000 (14:00 +0100)]
Revert "drm/radeon/kms: fix typo in r100_blit_copy"

commit d9ad77ebfd3a304306f9f18ff3f9e522da075e27 upstream.

This reverts commit 18b4fada275dd2b6dd9db904ddf70fe39e272222.

This code was correct, apologies to anyone who noticed things broke.

revert contents are different due to another commit in between.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoLinux 3.0.5
Greg Kroah-Hartman [Mon, 3 Oct 2011 18:48:15 +0000 (11:48 -0700)]
Linux 3.0.5

13 years agoALSA: HDA: Add support for IDT 92HD93
David Henningsson [Tue, 20 Sep 2011 07:02:22 +0000 (09:02 +0200)]
ALSA: HDA: Add support for IDT 92HD93

commit 46724c2e023cb7ba5cd5000dee6481f0a15ebed9 upstream.

BugLink: http://bugs.launchpad.net/bugs/854468
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoblock: Free queue resources at blk_release_queue()
Hannes Reinecke [Wed, 28 Sep 2011 14:07:01 +0000 (08:07 -0600)]
block: Free queue resources at blk_release_queue()

commit 777eb1bf15b8532c396821774bf6451e563438f5 upstream.

A kernel crash is observed when a mounted ext3/ext4 filesystem is
physically removed. The problem is that blk_cleanup_queue() frees up
some resources eg by calling elevator_exit(), which are not checked for
in normal operation. So we should rather move these calls to the
destructor function blk_release_queue() as at that point all remaining
references are gone. However, in doing so we have to ensure that any
externally supplied queue_lock is disconnected as the driver might free
up the lock after the call of blk_cleanup_queue(),

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agobnx2x: add missing break in bnx2x_dcbnl_get_cap
Shmulik Ravid [Thu, 22 Sep 2011 02:33:33 +0000 (02:33 +0000)]
bnx2x: add missing break in bnx2x_dcbnl_get_cap

commit a0babc80eb375aad69dab4687c3b44c47d42f241 upstream.

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agobnx2x: fix hw attention handling
Dmitry Kravkov [Thu, 22 Sep 2011 02:33:31 +0000 (02:33 +0000)]
bnx2x: fix hw attention handling

commit f2eaeb58bf6995a979c413ea0cc73289533feacb upstream.

Use register name to initialize attention mask

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoiwlagn: fix dangling scan request
Johannes Berg [Thu, 22 Sep 2011 21:59:04 +0000 (14:59 -0700)]
iwlagn: fix dangling scan request

commit 6c80c39d9a6986a566c30d797aae37bfb697eea3 upstream.

If iwl_scan_initiate() fails for any reason,
priv->scan_request and priv->scan_vif are left
dangling. This can lead to a crash later when
iwl_bg_scan_completed() tries to run a pending
scan request.

In practice, this seems to be very rare due to
the STATUS_SCANNING check earlier. That check,
however, is wrong -- it should allow a scan to
be queued when a reset/roc scan is going on.
When a normal scan is already going on, a new
one can't be issued by mac80211, so that code
can be removed completely. I introduced this
bug when adding off-channel support in commit
266af4c745952e9bebf687dd68af58df553cb59d.

Reported-by: Peng Yan <peng.yan@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoiwlegacy: do not use interruptible waits
Stanislaw Gruszka [Tue, 20 Sep 2011 14:49:03 +0000 (16:49 +0200)]
iwlegacy: do not use interruptible waits

commit 65d0f19e583e80e42b1c67c166bfc4dfdf6ab693 upstream.

iwlegacy version of fix:

commit effd4d9aece9184f526e6556786a94d335e38b71
Author: Johannes Berg <johannes.berg@intel.com>
Date:   Thu Sep 15 11:46:52 2011 -0700

    iwlagn: do not use interruptible waits

    Since the dawn of its time, iwlwifi has used
    interruptible waits to wait for synchronous
    commands and firmware loading.

    This leads to "interesting" bugs, because it
    can't actually handle the interruptions; for
    example when a command sending is interrupted
    it will assume the command completed fully,
    and then leave it pending, which leads to all
    kinds of trouble when the command finishes
    later.

    Since there's no easy way to gracefully deal
    with interruptions, fix the driver to not use
    interruptible waits.

    This at least fixes the error
    iwlagn 0000:02:00.0: Error: Response NULL in  'REPLY_SCAN_ABORT_CMD'

    I have seen in P2P testing, but it is likely
    that there are other errors caused by this.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agortlwifi: rtl8192cu: Fix unitialized struct
Larry Finger [Fri, 23 Sep 2011 03:59:02 +0000 (22:59 -0500)]
rtlwifi: rtl8192cu: Fix unitialized struct

commit 831d85471e761e190c3c8979b37540d699ae5812 upstream.

Driver rtl8192cu assigns a new struct rtl_tcb_desc object, but fails to
clear it.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>