GitHub/mt8127/android_kernel_alcatel_ttab.git
14 years agoMerge branch 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 24 Nov 2010 21:58:56 +0000 (06:58 +0900)]
Merge branch 'fbdev-fixes-for-linus' of git://git./linux/kernel/git/lethal/fbdev-2.6

* 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6:
  sisfb: delete osdef.h
  sisfb: move the CONFIG warning to sis_main.c
  sisfb: replace SiS_SetMemory with memset_io
  sisfb: remove InPort/OutPort wrappers
  sisfb: use CONFIG_FB_SIS_301/315 instead of SIS301/315H
  sisfb: delete redudant #define SIS_LINUX_KERNEL
  sisfb: delete dead SIS_XORG_XF86 code
  sisfb: delete fallback code for pci_map_rom()
  sisfb: delete obsolete PCI ROM bug workaround
  fbdev: Update documentation index file.
  lxfb: Program panel v/h sync output polarity correctly
  fbcmap: integer overflow bug
  fbcmap: cleanup white space in fb_alloc_cmap()
  MAINTAINERS: Add fbdev patchwork entry, tidy up file patterns.
  fbdev: da8xx: punt duplicated FBIO_WAITFORVSYNC define
  fbdev: sh_mobile_lcdcfb: fix bug in reconfig()

14 years agoMerge branch 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 24 Nov 2010 21:58:19 +0000 (06:58 +0900)]
Merge branch 'sh-fixes-for-linus' of git://git./linux/kernel/git/lethal/sh-2.6

* 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: clkfwk: Build fix for non-legacy CPG changes.
  sh: Use GCC __builtin_prefetch() to implement prefetch().
  sh: fix vsyscall compilation due to .eh_frame issue
  sh: avoid to flush all cache in sys_cacheflush
  sh: clkfwk: Disable init clk op for non-legacy clocks.
  sh: clkfwk: Kill off now unused algo_id in set_rate op.
  sh: clkfwk: Kill off unused clk_set_rate_ex().

14 years agoMerge branch 'for-linus' of git://neil.brown.name/md
Linus Torvalds [Wed, 24 Nov 2010 21:57:43 +0000 (06:57 +0900)]
Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md:
  md: Call blk_queue_flush() to establish flush/fua support
  md/raid1: really fix recovery looping when single good device fails.
  md: fix return value of rdev_size_change()

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
Linus Torvalds [Wed, 24 Nov 2010 21:57:11 +0000 (06:57 +0900)]
Merge git://git./linux/kernel/git/rusty/linux-2.6-for-linus

* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  virtio: fix format of sysfs driver/vendor files
  Char: virtio_console, fix memory leak
  virtio: return correct capacity to users
  module: Update prototype for ref_module (formerly use_module)

14 years agoarch/x86/include/asm/fixmap.h: mark __set_fixmap_offset as __always_inline
Andrew Morton [Wed, 24 Nov 2010 20:57:18 +0000 (12:57 -0800)]
arch/x86/include/asm/fixmap.h: mark __set_fixmap_offset as __always_inline

When compiling arch/x86/kernel/early_printk_mrst.c with i386
allmodconfig, gcc-4.1.0 generates an out-of-line copy of
__set_fixmap_offset() which contains a reference to
__this_fixmap_does_not_exist which the compiler cannot elide.

Marking __set_fixmap_offset() as __always_inline prevents this.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Feng Tang <feng.tang@intel.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoscripts: fix gfp-translate for recent changes to gfp.h
Mel Gorman [Wed, 24 Nov 2010 20:57:17 +0000 (12:57 -0800)]
scripts: fix gfp-translate for recent changes to gfp.h

The recent changes to gfp.h to satisfy sparse broke scripts/gfp-translate.
This patch fixes it up to work with old and new versions of gfp.h .

[akpm@linux-foundation.org: use `grep -q', per WANG Cong]
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Cc: Namhyung Kim <namhyung@gmail.com>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoreiserfs: fix inode mutex - reiserfs lock misordering
Frederic Weisbecker [Wed, 24 Nov 2010 20:57:15 +0000 (12:57 -0800)]
reiserfs: fix inode mutex - reiserfs lock misordering

reiserfs_unpack() locks the inode mutex with reiserfs_mutex_lock_safe()
to protect against reiserfs lock dependency.  However this protection
requires to have the reiserfs lock to be locked.

This is the case if reiserfs_unpack() is called by reiserfs_ioctl but
not from reiserfs_quota_on() when it tries to unpack tails of quota
files.

Fix the ordering of the two locks in reiserfs_unpack() to fix this
issue.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Reported-by: Markus Gapp <markus.gapp@gmx.net>
Reported-by: Jan Kara <jack@suse.cz>
Cc: Jeff Mahoney <jeffm@suse.com>
Cc: <stable@kernel.org> [2.6.36.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agobacklight: grab ops_lock before testing bd->ops
Uwe Kleine-König [Wed, 24 Nov 2010 20:57:14 +0000 (12:57 -0800)]
backlight: grab ops_lock before testing bd->ops

According to the comment describing ops_lock in the definition of struct
backlight_device and when comparing with other functions in backlight.c
the mutex must be hold when checking ops to be non-NULL.

Fixes a problem added by c835ee7f4154992e6 ("backlight: Add suspend/resume
support to the backlight core") in Jan 2009.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodrivers/misc/isl29020.c: remove incorrect kfree in isl29020_remove()
Axel Lin [Wed, 24 Nov 2010 20:57:14 +0000 (12:57 -0800)]
drivers/misc/isl29020.c: remove incorrect kfree in isl29020_remove()

struct als_data *data is not used in this driver at all.

Also add a missing ">" character for MODULE_AUTHOR.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agopagemap: set pagemap walk limit to PMD boundary
Naoya Horiguchi [Wed, 24 Nov 2010 20:57:13 +0000 (12:57 -0800)]
pagemap: set pagemap walk limit to PMD boundary

Currently one pagemap_read() call walks in PAGEMAP_WALK_SIZE bytes (== 512
pages.) But there is a corner case where walk_pmd_range() accidentally
runs over a VMA associated with a hugetlbfs file.

For example, when a process has mappings to VMAs as shown below:

  # cat /proc/<pid>/maps
  ...
  3a58f6d000-3a58f72000 rw-p 00000000 00:00 0
  7fbd51853000-7fbd51855000 rw-p 00000000 00:00 0
  7fbd5186c000-7fbd5186e000 rw-p 00000000 00:00 0
  7fbd51a00000-7fbd51c00000 rw-s 00000000 00:12 8614   /hugepages/test

then pagemap_read() goes into walk_pmd_range() path and walks in the range
0x7fbd51853000-0x7fbd51a53000, but the hugetlbfs VMA should be handled by
walk_hugetlb_range().  Otherwise PMD for the hugepage is considered bad
and cleared, which causes undesirable results.

This patch fixes it by separating pagemap walk range into one PMD.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomm: remove call to find_vma in pagewalk for non-hugetlbfs
David Sterba [Wed, 24 Nov 2010 20:57:10 +0000 (12:57 -0800)]
mm: remove call to find_vma in pagewalk for non-hugetlbfs

Commit d33b9f45 ("mm: hugetlb: fix hugepage memory leak in
walk_page_range()") introduces a check if a vma is a hugetlbfs one and
later in 5dc37642 ("mm hugetlb: add hugepage support to pagemap") it is
moved under #ifdef CONFIG_HUGETLB_PAGE but a needless find_vma call is
left behind and its result is not used anywhere else in the function.

The side-effect of caching vma for @addr inside walk->mm is neither
utilized in walk_page_range() nor in called functions.

Signed-off-by: David Sterba <dsterba@suse.cz>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Matt Mackall <mpm@selenic.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomm/page_alloc.c: fix build_all_zonelist() where percpu_alloc() is wrongly called...
KAMEZAWA Hiroyuki [Wed, 24 Nov 2010 20:57:09 +0000 (12:57 -0800)]
mm/page_alloc.c: fix build_all_zonelist() where percpu_alloc() is wrongly called under stop_machine_run()

During memory hotplug, build_allzonelists() may be called under
stop_machine_run().  In this function, setup_zone_pageset() is called.
But it's bug because it will do page allocation under stop_machine_run().

Here is a report from Alok Kataria.

  BUG: sleeping function called from invalid context at kernel/mutex.c:94
  in_atomic(): 0, irqs_disabled(): 1, pid: 4, name: migration/0
  Pid: 4, comm: migration/0 Not tainted 2.6.35.6-45.fc14.x86_64 #1
  Call Trace:
   [<ffffffff8103d12b>] __might_sleep+0xeb/0xf0
   [<ffffffff81468245>] mutex_lock+0x24/0x50
   [<ffffffff8110eaa6>] pcpu_alloc+0x6d/0x7ee
   [<ffffffff81048888>] ? load_balance+0xbe/0x60e
   [<ffffffff8103a1b3>] ? rt_se_boosted+0x21/0x2f
   [<ffffffff8103e1cf>] ? dequeue_rt_stack+0x18b/0x1ed
   [<ffffffff8110f237>] __alloc_percpu+0x10/0x12
   [<ffffffff81465e22>] setup_zone_pageset+0x38/0xbe
   [<ffffffff810d6d81>] ? build_zonelists_node.clone.58+0x79/0x8c
   [<ffffffff81452539>] __build_all_zonelists+0x419/0x46c
   [<ffffffff8108ef01>] ? cpu_stopper_thread+0xb2/0x198
   [<ffffffff8108f075>] stop_machine_cpu_stop+0x8e/0xc5
   [<ffffffff8108efe7>] ? stop_machine_cpu_stop+0x0/0xc5
   [<ffffffff8108ef57>] cpu_stopper_thread+0x108/0x198
   [<ffffffff81467a37>] ? schedule+0x5b2/0x5cc
   [<ffffffff8108ee4f>] ? cpu_stopper_thread+0x0/0x198
   [<ffffffff81065f29>] kthread+0x7f/0x87
   [<ffffffff8100aae4>] kernel_thread_helper+0x4/0x10
   [<ffffffff81065eaa>] ? kthread+0x0/0x87
   [<ffffffff8100aae0>] ? kernel_thread_helper+0x0/0x10
  Built 5 zonelists in Node order, mobility grouping on.  Total pages: 289456
  Policy zone: Normal

This patch tries to fix the issue by moving setup_zone_pageset() out from
stop_machine_run(). It's obviously not necessary to be called under
stop_machine_run().

[akpm@linux-foundation.org: remove unneeded local]
Reported-by: Alok Kataria <akataria@vmware.com>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Petr Vandrovec <petr@vmware.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agocgroups: make swap accounting default behavior configurable
Michal Hocko [Wed, 24 Nov 2010 20:57:08 +0000 (12:57 -0800)]
cgroups: make swap accounting default behavior configurable

Swap accounting can be configured by CONFIG_CGROUP_MEM_RES_CTLR_SWAP
configuration option and then it is turned on by default.  There is a boot
option (noswapaccount) which can disable this feature.

This makes it hard for distributors to enable the configuration option as
this feature leads to a bigger memory consumption and this is a no-go for
general purpose distribution kernel.  On the other hand swap accounting
may be very usuful for some workloads.

This patch adds a new configuration option which controls the default
behavior (CGROUP_MEM_RES_CTLR_SWAP_ENABLED).  If the option is selected
then the feature is turned on by default.

It also adds a new boot parameter swapaccount[=1|0] which enhances the
original noswapaccount parameter semantic by means of enable/disable logic
(defaults to 1 if no value is provided to be still consistent with
noswapaccount).

The default behavior is unchanged (if CONFIG_CGROUP_MEM_RES_CTLR_SWAP is
enabled then CONFIG_CGROUP_MEM_RES_CTLR_SWAP_ENABLED is enabled as well)

Signed-off-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomemcg: avoid deadlock between move charge and try_charge()
Daisuke Nishimura [Wed, 24 Nov 2010 20:57:06 +0000 (12:57 -0800)]
memcg: avoid deadlock between move charge and try_charge()

__mem_cgroup_try_charge() can be called under down_write(&mmap_sem)(e.g.
mlock does it). This means it can cause deadlock if it races with move charge:

Ex.1)
                move charge             |        try charge
  --------------------------------------+------------------------------
    mem_cgroup_can_attach()             |  down_write(&mmap_sem)
      mc.moving_task = current          |    ..
      mem_cgroup_precharge_mc()         |  __mem_cgroup_try_charge()
        mem_cgroup_count_precharge()    |    prepare_to_wait()
          down_read(&mmap_sem)          |    if (mc.moving_task)
          -> cannot aquire the lock     |    -> true
                                        |      schedule()

Ex.2)
                move charge             |        try charge
  --------------------------------------+------------------------------
    mem_cgroup_can_attach()             |
      mc.moving_task = current          |
      mem_cgroup_precharge_mc()         |
        mem_cgroup_count_precharge()    |
          down_read(&mmap_sem)          |
          ..                            |
          up_read(&mmap_sem)            |
                                        |  down_write(&mmap_sem)
    mem_cgroup_move_task()              |    ..
      mem_cgroup_move_charge()          |  __mem_cgroup_try_charge()
        down_read(&mmap_sem)            |    prepare_to_wait()
        -> cannot aquire the lock       |    if (mc.moving_task)
                                        |    -> true
                                        |      schedule()

To avoid this deadlock, we do all the move charge works (both can_attach() and
attach()) under one mmap_sem section.
And after this patch, we set/clear mc.moving_task outside mc.lock, because we
use the lock only to check mc.from/to.

Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodrivers/leds/leds-lp5523.c: perform SW reset before detection
Samu Onkalo [Wed, 24 Nov 2010 20:57:05 +0000 (12:57 -0800)]
drivers/leds/leds-lp5523.c: perform SW reset before detection

Chip detection may fail if the chip is in some odd state for example after
system restart.  Chip doesn't have HW reset line.

Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodrivers/leds/leds-lp5521.c: perform SW reset before detection
Samu Onkalo [Wed, 24 Nov 2010 20:57:05 +0000 (12:57 -0800)]
drivers/leds/leds-lp5521.c: perform SW reset before detection

Chip detection may fail if the chip is in some odd state for example after
system restart.  Chip doesn't have HW reset line.

Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodrivers/leds/leds-lp5523.c: adjust delays and add comments to them
Samu Onkalo [Wed, 24 Nov 2010 20:57:04 +0000 (12:57 -0800)]
drivers/leds/leds-lp5523.c: adjust delays and add comments to them

Delays were little bit too long.  Adjust delay times and add some comments
to them.

Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodrivers/leds/leds-lp5521.c: adjust delays and add comments to them
Samu Onkalo [Wed, 24 Nov 2010 20:57:03 +0000 (12:57 -0800)]
drivers/leds/leds-lp5521.c: adjust delays and add comments to them

Delays were little bit too long.  Adjust delay times and add some comments
to them.

Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodrivers/leds/leds-lp5523.c: change some macros to functions
Samu Onkalo [Wed, 24 Nov 2010 20:57:03 +0000 (12:57 -0800)]
drivers/leds/leds-lp5523.c: change some macros to functions

A small macro changed to inline function to have proper type checking.
Inline added to two similar small functions.

Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodrivers/leds/leds-lp5521.c: change some macros to functions
Samu Onkalo [Wed, 24 Nov 2010 20:57:02 +0000 (12:57 -0800)]
drivers/leds/leds-lp5521.c: change some macros to functions

Some small macros changed to inline functions to have proper type
checking.

Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agofuse: fix attributes after open(O_TRUNC)
Ken Sumrall [Wed, 24 Nov 2010 20:57:00 +0000 (12:57 -0800)]
fuse: fix attributes after open(O_TRUNC)

The attribute cache for a file was not being cleared when a file is opened
with O_TRUNC.

If the filesystem's open operation truncates the file ("atomic_o_trunc"
feature flag is set) then the kernel should invalidate the cached st_mtime
and st_ctime attributes.

Also i_size should be explicitly be set to zero as it is used sometimes
without refreshing the cache.

Signed-off-by: Ken Sumrall <ksumrall@android.com>
Cc: Anfei <anfei.zhou@gmail.com>
Cc: "Anand V. Avati" <avati@gluster.com>
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agosgi-xpc: XPC fails to discover partitions with all nasids above 128
Robin@sgi.com [Wed, 24 Nov 2010 20:56:59 +0000 (12:56 -0800)]
sgi-xpc: XPC fails to discover partitions with all nasids above 128

UV hardware defines 256 memory protection regions versus the baseline 64
with increasing size for the SN2 ia64.  This was overlooked when XPC was
modified to accomodate both UV and SN2.

Without this patch, a user could reconfigure their existing system and
suddenly disable cross-partition communications with no indication of what
has gone wrong.  It also prevents larger configurations from using
cross-partition communication.

Signed-off-by: Robin Holt <holt@sgi.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomemcg: fix false positive VM_BUG on non-SMP
Kirill A. Shutemov [Wed, 24 Nov 2010 20:56:58 +0000 (12:56 -0800)]
memcg: fix false positive VM_BUG on non-SMP

Fix this:

  kernel BUG at mm/memcontrol.c:2155!
  invalid opcode: 0000 [#1]
  last sysfs file:

  Pid: 18, comm: sh Not tainted 2.6.37-rc3 #3 /Bochs
  EIP: 0060:[<c10731b2>] EFLAGS: 00000246 CPU: 0
  EIP is at mem_cgroup_move_account+0xe2/0xf0
  EAX: 00000004 EBX: c6f931d4 ECX: c681c300 EDX: c681c000
  ESI: c681c300 EDI: ffffffea EBP: c681c000 ESP: c46f3e30
   DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
  Process sh (pid: 18, ti=c46f2000 task=c6826e60 task.ti=c46f2000)
  Stack:
   00000155 c681c000 0805f000 c46ee180 c46f3e5c c7058820 c1074d37 00000000
   08060000 c46db9a0 c46ec080 c7058820 0805f000 08060000 c46f3e98 c1074c50
   c106c75e c46f3e98 c46ec080 08060000 0805ffff c46db9a0 c46f3e98 c46e0340
  Call Trace:
   [<c1074d37>] ? mem_cgroup_move_charge_pte_range+0xe7/0x130
   [<c1074c50>] ? mem_cgroup_move_charge_pte_range+0x0/0x130
   [<c106c75e>] ? walk_page_range+0xee/0x1d0
   [<c10725d6>] ? mem_cgroup_move_task+0x66/0x90
   [<c1074c50>] ? mem_cgroup_move_charge_pte_range+0x0/0x130
   [<c1072570>] ? mem_cgroup_move_task+0x0/0x90
   [<c1042616>] ? cgroup_attach_task+0x136/0x200
   [<c1042878>] ? cgroup_tasks_write+0x48/0xc0
   [<c1041e9e>] ? cgroup_file_write+0xde/0x220
   [<c101398d>] ? do_page_fault+0x17d/0x3f0
   [<c108a79d>] ? alloc_fd+0x2d/0xd0
   [<c1041dc0>] ? cgroup_file_write+0x0/0x220
   [<c1077ba2>] ? vfs_write+0x92/0xc0
   [<c1077c81>] ? sys_write+0x41/0x70
   [<c1140e3d>] ? syscall_call+0x7/0xb
  Code: 03 00 74 09 8b 44 24 04 e8 1c f1 ff ff 89 73 04 8d 86 b0 00 00 00 b9 01 00 00 00 89 da 31 ff e8 65 f5 ff ff e9 4d ff ff ff 0f 0b <0f> 0b 0f 0b 0f 0b 90 8d b4 26 00 00 00 00 83 ec 10 8b 0d f4 e3
  EIP: [<c10731b2>] mem_cgroup_move_account+0xe2/0xf0 SS:ESP 0068:c46f3e30
  ---[ end trace 7daa1582159b6532 ]---

lock_page_cgroup and unlock_page_cgroup are implemented using
bit_spinlock.  bit_spinlock doesn't touch the bit if we are on non-SMP
machine, so we can't use the bit to check whether the lock was taken.

Let's introduce is_page_cgroup_locked based on bit_spin_is_locked instead
of PageCgroupLocked to fix it.

[akpm@linux-foundation.org: s/is_page_cgroup_locked/page_is_cgroup_locked/]
Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujtisu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agouml: disable winch irq before freeing handler data
Will Newton [Wed, 24 Nov 2010 20:56:55 +0000 (12:56 -0800)]
uml: disable winch irq before freeing handler data

Disable the winch irq early to make sure we don't take an interrupt part
way through the freeing of the handler data, resulting in a crash on
shutdown:

  winch_interrupt : read failed, errno = 9
  fd 13 is losing SIGWINCH support
  ------------[ cut here ]------------
  WARNING: at lib/list_debug.c:48 list_del+0xc6/0x100()
  list_del corruption, next is LIST_POISON1 (00100100)
  082578c8:  [<081fd77f>] dump_stack+0x22/0x24
  082578e0:  [<0807a18a>] warn_slowpath_common+0x5a/0x80
  08257908:  [<0807a23e>] warn_slowpath_fmt+0x2e/0x30
  08257920:  [<08172196>] list_del+0xc6/0x100
  08257940:  [<08060244>] free_winch+0x14/0x80
  08257958:  [<080606fb>] winch_interrupt+0xdb/0xe0
  08257978:  [<080a65b5>] handle_IRQ_event+0x35/0xe0
  08257998:  [<080a8717>] handle_edge_irq+0xb7/0x170
  082579bc:  [<08059bc4>] do_IRQ+0x34/0x50
  082579d4:  [<08059e1b>] sigio_handler+0x5b/0x80
  082579ec:  [<0806a374>] sig_handler_common+0x44/0xb0
  08257a68:  [<0806a538>] sig_handler+0x38/0x50
  08257a78:  [<0806a77c>] handle_signal+0x5c/0xa0
  08257a9c:  [<0806be28>] hard_handler+0x18/0x20
  08257aac:  [<00c14400>] 0xc14400

Signed-off-by: Will Newton <will.newton@gmail.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agonommu: yield CPU while disposing VM
Steven J. Magnani [Wed, 24 Nov 2010 20:56:54 +0000 (12:56 -0800)]
nommu: yield CPU while disposing VM

Depending on processor speed, page size, and the amount of memory a
process is allowed to amass, cleanup of a large VM may freeze the system
for many seconds.  This can result in a watchdog timeout.

Make sure other tasks receive some service when cleaning up large VMs.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Cc: Greg Ungerer <gerg@snapgear.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoinclude/linux/fs.h: fix userspace build
Loïc Minier [Wed, 24 Nov 2010 20:56:53 +0000 (12:56 -0800)]
include/linux/fs.h: fix userspace build

dpkg uses fiemap but didn't particularly need to include stdint.h so far.
Since 367a51a33902 ("fs: Add FITRIM ioctl"), build of linux/fs.h failed in
dpkg with:

  In file included from ../../src/filesdb.c:27:0:
  /usr/include/linux/fs.h:37:2: error: expected specifier-qualifier-list before 'uint64_t'

Use exportable type __u64 to avoid the dependency on stdint.h.

b31d42a5af18 ("Fix compile brekage with !CONFIG_BLOCK") fixed only the
kernel build by including linux/types.h, but this also fixed "make
headers_check", so don't revert it.

Signed-off-by: Loïc Minier <loic.minier@linaro.org>
Tested-by: Arnd Bergmann <arnd.bergmann@linaro.org>
Cc: Lukas Czerner <lczerner@redhat.com>
Cc: Dmitry Monakhov <dmonakhov@openvz.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoleds: fix bug with reading NAS SS4200 dmi code
Steven Rostedt [Wed, 24 Nov 2010 20:56:52 +0000 (12:56 -0800)]
leds: fix bug with reading NAS SS4200 dmi code

While running randconfg with ktest.pl I stumbled upon this bug:

  BUG: unable to handle kernel NULL pointer dereference at 0000000000000003
  IP: [<ffffffff815fe44f>] strstr+0x39/0x86
  PGD 0
  Oops: 0000 [#1] SMP
  last sysfs file:
  CPU 0
  Modules linked in:

  Pid: 1, comm: swapper Not tainted 2.6.37-rc1-test+ #6 DG965MQ/
  RIP: 0010:[<ffffffff815fe44f>]  [<ffffffff815fe44f>] strstr+0x39/0x86
  RSP: 0018:ffff8800797cbd80  EFLAGS: 00010213
  RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffffffffffff
  RDX: 0000000000000000 RSI: ffffffff82eb7ac9 RDI: 0000000000000003
  RBP: ffff8800797cbda0 R08: ffff880000000003 R09: 0000000000030725
  R10: ffff88007d294c00 R11: 0000000000014c00 R12: 0000000000000020
  R13: ffffffff82eb7ac9 R14: ffffffffffffffff R15: ffffffff82eb7b08
  FS:  0000000000000000(0000) GS:ffff88007d200000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
  CR2: 0000000000000003 CR3: 0000000002a1d000 CR4: 00000000000006f0
  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
  Process swapper (pid: 1, threadinfo ffff8800797ca000, task ffff8800797d0000)
  Stack:
   00000000000000ba ffffffff82eb7ac9 ffffffff82eb7ab8 00000000000000ba
   ffff8800797cbdf0 ffffffff81e2050f ffff8800797cbdc0 00000000815f913b
   ffff8800797cbe00 ffffffff82eb7ab8 0000000000000000 0000000000000000
  Call Trace:
   [<ffffffff81e2050f>] dmi_matches+0x117/0x154
   [<ffffffff81e205d7>] dmi_check_system+0x3d/0x8d
   [<ffffffff82e1ad25>] ? nas_gpio_init+0x0/0x2c8
   [<ffffffff82e1ad49>] nas_gpio_init+0x24/0x2c8
   [<ffffffff820d750d>] ? wm8350_led_init+0x0/0x20
   [<ffffffff82e1ad25>] ? nas_gpio_init+0x0/0x2c8
   [<ffffffff810022f7>] do_one_initcall+0xab/0x1b2
   [<ffffffff82da749c>] kernel_init+0x248/0x331
   [<ffffffff8100e624>] kernel_thread_helper+0x4/0x10
   [<ffffffff82da7254>] ? kernel_init+0x0/0x331

Found that the nas_led_whitelist dmi_system_id structure array had no
NULL end delimiter, causing the dmi_check_system() loop to read an
undefined entry.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Dave Hansen <dave@sr71.net>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agosisfb: delete osdef.h
Aaro Koskinen [Fri, 19 Nov 2010 21:58:51 +0000 (21:58 +0000)]
sisfb: delete osdef.h

The file is not needed.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agosisfb: move the CONFIG warning to sis_main.c
Aaro Koskinen [Fri, 19 Nov 2010 21:58:50 +0000 (21:58 +0000)]
sisfb: move the CONFIG warning to sis_main.c

sis_main.c is always compiled, so we can check Kconfig options there.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agosisfb: replace SiS_SetMemory with memset_io
Aaro Koskinen [Fri, 19 Nov 2010 21:58:49 +0000 (21:58 +0000)]
sisfb: replace SiS_SetMemory with memset_io

Get rid of one more wrapper.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agosisfb: remove InPort/OutPort wrappers
Aaro Koskinen [Fri, 19 Nov 2010 21:58:48 +0000 (21:58 +0000)]
sisfb: remove InPort/OutPort wrappers

Remove register IO wrappers.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agosisfb: use CONFIG_FB_SIS_301/315 instead of SIS301/315H
Aaro Koskinen [Fri, 19 Nov 2010 21:58:47 +0000 (21:58 +0000)]
sisfb: use CONFIG_FB_SIS_301/315 instead of SIS301/315H

There is no need to alias CONFIG #defines.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agosisfb: delete redudant #define SIS_LINUX_KERNEL
Aaro Koskinen [Fri, 19 Nov 2010 21:58:46 +0000 (21:58 +0000)]
sisfb: delete redudant #define SIS_LINUX_KERNEL

It's not needed anymore with SIS_XORG_XF86 gone.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agosisfb: delete dead SIS_XORG_XF86 code
Aaro Koskinen [Fri, 19 Nov 2010 21:58:45 +0000 (21:58 +0000)]
sisfb: delete dead SIS_XORG_XF86 code

Delete code for compiling the driver for X.org/XFree86. The development
has forked, so there is no point keeping this code in the tree.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agosisfb: delete fallback code for pci_map_rom()
Aaro Koskinen [Fri, 19 Nov 2010 21:58:44 +0000 (21:58 +0000)]
sisfb: delete fallback code for pci_map_rom()

If pci_map_rom() fails, there is some fallback code that basically
duplicates pci_map_rom() on non-x86 platforms. No point in that.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agosisfb: delete obsolete PCI ROM bug workaround
Aaro Koskinen [Fri, 19 Nov 2010 21:58:43 +0000 (21:58 +0000)]
sisfb: delete obsolete PCI ROM bug workaround

Delete a workaround for a PCI ROM bug that has been fixed ages ago by
the commit 761a3ac08c63718dacde12aaf0ec6d6760e8c2b7.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
14 years agomd: Call blk_queue_flush() to establish flush/fua support
Darrick J. Wong [Wed, 24 Nov 2010 05:40:33 +0000 (16:40 +1100)]
md: Call blk_queue_flush() to establish flush/fua support

Before 2.6.37, the md layer had a mechanism for catching I/Os with the
barrier flag set, and translating the barrier into barriers for all
the underlying devices.  With 2.6.37, I/O barriers have become plain
old flushes, and the md code was updated to reflect this.  However,
one piece was left out -- the md layer does not tell the block layer
that it supports flushes or FUA access at all, which results in md
silently dropping flush requests.

Since the support already seems there, just add this one piece of
bookkeeping.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: NeilBrown <neilb@suse.de>
14 years agomd/raid1: really fix recovery looping when single good device fails.
NeilBrown [Wed, 24 Nov 2010 05:39:46 +0000 (16:39 +1100)]
md/raid1: really fix recovery looping when single good device fails.

Commit 4044ba58dd15cb01797c4fd034f39ef4a75f7cc3 supposedly fixed a
problem where if a raid1 with just one good device gets a read-error
during recovery, the recovery would abort and immediately restart in
an infinite loop.

However it depended on raid1_remove_disk removing the spare device
from the array.  But that does not happen in this case.  So add a test
so that in the 'recovery_disabled' case, the device will be removed.

This suitable for any kernel since 2.6.29 which is when
recovery_disabled was introduced.

Cc: stable@kernel.org
Reported-by: Sebastian Färber <faerber@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
14 years agomd: fix return value of rdev_size_change()
Justin Maggard [Wed, 24 Nov 2010 05:36:17 +0000 (16:36 +1100)]
md: fix return value of rdev_size_change()

When trying to grow an array by enlarging component devices,
rdev_size_store() expects the return value of rdev_size_change() to be
in sectors, but the actual value is returned in KBs.

This functionality was broken by commit
     dd8ac336c13fd8afdb082ebacb1cddd5cf727889
so this patch is suitable for any kernel since 2.6.30.

Cc: stable@kernel.org
Signed-off-by: Justin Maggard <jmaggard10@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
14 years agovirtio: fix format of sysfs driver/vendor files
Stephen Hemminger [Wed, 10 Nov 2010 06:20:29 +0000 (22:20 -0800)]
virtio: fix format of sysfs driver/vendor files

The sysfs files for virtio produce the wrong format and are missing
the required newline. The output for virtio bus vendor/device should
have the same format as the corresponding entries for PCI devices.

Although this technically changes the ABI for sysfs, these files were
broken to start with!

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
14 years agoChar: virtio_console, fix memory leak
Jiri Slaby [Sat, 6 Nov 2010 09:06:50 +0000 (10:06 +0100)]
Char: virtio_console, fix memory leak

Stanse found that in init_vqs, memory is leaked under certain
circumstanses (the fail path order is incorrect). Fix that by checking
allocations in one turn and free all of them at once if some fails
(some may be NULL, but this is OK).

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Amit Shah <amit.shah@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
14 years agovirtio: return correct capacity to users
Michael S. Tsirkin [Thu, 4 Nov 2010 12:24:24 +0000 (14:24 +0200)]
virtio: return correct capacity to users

We can't rely on indirect buffers for capacity
calculations because they need a memory allocation
which might fail.  In particular, virtio_net can get
into this situation under stress, and it drops packets
and performs badly.

So return the number of buffers we can guarantee users.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reported-By: Krishna Kumar2 <krkumar2@in.ibm.com>
14 years agomodule: Update prototype for ref_module (formerly use_module)
Anders Kaseorg [Wed, 24 Nov 2010 21:21:10 +0000 (15:21 -0600)]
module: Update prototype for ref_module (formerly use_module)

Commit 9bea7f23952d5948f8e5dfdff4de09bb9981fb5f renamed use_module to
ref_module (and changed its return value), but forgot to update this
prototype in module.h.

Signed-off-by: Anders Kaseorg <andersk@ksplice.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Tue, 23 Nov 2010 23:23:56 +0000 (08:23 +0900)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (41 commits)
  ALSA: hda - Identify more variants for ALC269
  ALSA: hda - Fix wrong ALC269 variant check
  ALSA: hda - Enable jack sense for Thinkpad Edge 11
  ALSA: Revert "ALSA: hda - Fix switching between dmic and mic using the same mux on IDT/STAC"
  ALSA: hda - Fixed ALC887-VD initial error
  ALSA: atmel - Fix the return value in error path
  ALSA: hda: Use hp-laptop quirk to enable headphones automute for Asus A52J
  ALSA: snd-atmel-abdac: test wrong variable
  ALSA: azt3328: period bug fix (for PA), add missing ACK on stop timer
  ALSA: hda: Add Samsung R720 SSID for subwoofer pin fixup
  ALSA: sound/pci/asihpi/hpioctl.c: Remove unnecessary casts of pci_get_drvdata
  ALSA: sound/core/pcm_lib.c: Remove unnecessary semicolons
  ALSA: sound/ppc: Use printf extension %pR for struct resource
  ALSA: ac97: Apply quirk for Dell Latitude D610 binding Master and Headphone controls
  ASoC: uda134x - set reg_cache_default to uda134x_reg
  ASoC: Add support for MAX98089 CODEC
  ASoC: davinci: fixes for multi-component
  ASoC: Fix register cache setup WM8994 for multi-component
  ASoC: Fix dapm_seq_compare() for multi-component
  ASoC: RX1950: Fix hw_params function
  ...

14 years agoMerge branch 'upstream/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Tue, 23 Nov 2010 23:23:18 +0000 (08:23 +0900)]
Merge branch 'upstream/for-linus' of git://git./linux/kernel/git/jeremy/xen

* 'upstream/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen: (23 commits)
  xen/events: Use PIRQ instead of GSI value when unmapping MSI/MSI-X irqs.
  xen: set IO permission early (before early_cpu_init())
  xen: re-enable boot-time ballooning
  xen/balloon: make sure we only include remaining extra ram
  xen/balloon: the balloon_lock is useless
  xen: add extra pages to balloon
  xen: make evtchn's name less generic
  xen/evtchn: the evtchn device is non-seekable
  Revert "xen/privcmd: create address space to allow writable mmaps"
  xen/events: use locked set|clear_bit() for cpu_evtchn_mask
  xen/evtchn: clear secondary CPUs' cpu_evtchn_mask[] after restore
  xen/xenfs: update xenfs_mount for new prototype
  xen: fix header export to userspace
  xen: implement XENMEM_machphys_mapping
  xen: set vma flag VM_PFNMAP in the privcmd mmap file_op
  xen: xenfs: privcmd: check put_user() return code
  xen/evtchn: add missing static
  xen/evtchn: Fix name of Xen event-channel device
  xen/evtchn: don't do unbind_from_irqhandler under spinlock
  xen/evtchn: remove spurious barrier
  ...

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Tue, 23 Nov 2010 23:22:34 +0000 (08:22 +0900)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  of/phylib: Use device tree properties to initialize Marvell PHYs.
  phylib: Add support for Marvell 88E1149R devices.
  phylib: Use common page register definition for Marvell PHYs.
  qlge: Fix incorrect usage of module parameters and netdev msg level
  ipv6: fix missing in6_ifa_put in addrconf
  SuperH IrDA: correct Baud rate error correction
  atl1c: Fix hardware type check for enabling OTP CLK
  net: allow GFP_HIGHMEM in __vmalloc()
  bonding: change list contact to netdev@vger.kernel.org
  e1000: fix screaming IRQ

14 years agoMerge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Tue, 23 Nov 2010 23:21:43 +0000 (08:21 +0900)]
Merge branch 'usb-linus' of git://git./linux/kernel/git/gregkh/usb-2.6

* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  USB: EHCI: fix obscure race in ehci_endpoint_disable
  USB: gadget: AT91: fix typo in atmel_usba_udc driver
  USB: isp1362-hcd - fix section mismatch warning
  USB: EHCI: AMD periodic frame list table quirk
  USB: OTG: langwell_otg: fix up some sysfs attribute permissions
  USB: misc: usbsevseg: fix up some sysfs attribute permissions
  USB: misc: usbled: fix up some sysfs attribute permissions
  USB: misc: trancevibrator: fix up a sysfs attribute permission
  USB: misc: cypress_cy7c63: fix up some sysfs attribute permissions
  USB: storage: sierra_ms: fix sysfs file attribute
  USB: ehci: fix debugfs 'lpm' permissions
  USB: atm: ueagle-atm: fix up some permissions on the sysfs files
  xhci: Fix command ring replay after resume.
  xHCI: fix wMaxPacketSize mask
  xHCI: release spinlock when setup interrupt
  xhci: Remove excessive printks with shared IRQs.

14 years agoMerge branch 'fix/asoc' into for-linus
Takashi Iwai [Tue, 23 Nov 2010 11:41:17 +0000 (12:41 +0100)]
Merge branch 'fix/asoc' into for-linus

14 years agoMerge branch 'for-2.6.37' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/asoc...
Takashi Iwai [Tue, 23 Nov 2010 11:40:15 +0000 (12:40 +0100)]
Merge branch 'for-2.6.37' of git://git./linux/kernel/git/lrg/asoc-2.6 into fix/asoc

14 years agoALSA: hda - Identify more variants for ALC269
Kailang Yang [Tue, 23 Nov 2010 07:56:16 +0000 (08:56 +0100)]
ALSA: hda - Identify more variants for ALC269

Give more correct chip names for ALC269-variant codecs.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: hda - Fix wrong ALC269 variant check
Kailang Yang [Tue, 23 Nov 2010 07:53:32 +0000 (08:53 +0100)]
ALSA: hda - Fix wrong ALC269 variant check

The refactoring commit d433a67831ab2c470cc53a3ff9b60f656767be15
    ALSA: hda - Optimize the check of ALC269 codec variants
introduced a wrong check for ALC269-vb type.  This patch corrects it.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: hda - Enable jack sense for Thinkpad Edge 11
Manoj Iyer [Tue, 23 Nov 2010 06:43:44 +0000 (07:43 +0100)]
ALSA: hda - Enable jack sense for Thinkpad Edge 11

Add a quirk entry for Thinkpad Edge 11 as well as other TP Edge models.

Signed-off-by: Manoj Iyer <manoj.iyer@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: Revert "ALSA: hda - Fix switching between dmic and mic using the same mux on...
Takashi Iwai [Tue, 23 Nov 2010 06:39:58 +0000 (07:39 +0100)]
ALSA: Revert "ALSA: hda - Fix switching between dmic and mic using the same mux on IDT/STAC"

This reverts commit f41cc2a85d52ac6971299922084ac5ac59dc339d.

The patch broke the digital mic pin handling wrongly.
Reference: bko#23162
https://bugzilla.kernel.org/show_bug.cgi?id=23162

Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoMerge branches 'upstream/core', 'upstream/xenfs' and 'upstream/evtchn' into upstream...
Jeremy Fitzhardinge [Mon, 22 Nov 2010 20:22:42 +0000 (12:22 -0800)]
Merge branches 'upstream/core', 'upstream/xenfs' and 'upstream/evtchn' into upstream/for-linus

* upstream/core:
  xen/events: Use PIRQ instead of GSI value when unmapping MSI/MSI-X irqs.
  xen: set IO permission early (before early_cpu_init())
  xen: re-enable boot-time ballooning
  xen/balloon: make sure we only include remaining extra ram
  xen/balloon: the balloon_lock is useless
  xen: add extra pages to balloon
  xen/events: use locked set|clear_bit() for cpu_evtchn_mask
  xen/evtchn: clear secondary CPUs' cpu_evtchn_mask[] after restore
  xen: implement XENMEM_machphys_mapping

* upstream/xenfs:
  Revert "xen/privcmd: create address space to allow writable mmaps"
  xen/xenfs: update xenfs_mount for new prototype
  xen: fix header export to userspace
  xen: set vma flag VM_PFNMAP in the privcmd mmap file_op
  xen: xenfs: privcmd: check put_user() return code

* upstream/evtchn:
  xen: make evtchn's name less generic
  xen/evtchn: the evtchn device is non-seekable
  xen/evtchn: add missing static
  xen/evtchn: Fix name of Xen event-channel device
  xen/evtchn: don't do unbind_from_irqhandler under spinlock
  xen/evtchn: remove spurious barrier
  xen/evtchn: ports start enabled
  xen/evtchn: dynamically allocate port_user array
  xen/evtchn: track enabled state for each port

14 years agoxen/events: Use PIRQ instead of GSI value when unmapping MSI/MSI-X irqs.
Konrad Rzeszutek Wilk [Fri, 19 Nov 2010 16:27:09 +0000 (11:27 -0500)]
xen/events: Use PIRQ instead of GSI value when unmapping MSI/MSI-X irqs.

When we allocate a vector for MSI/MSI-X we save away the PIRQ, and the
vector value. When we unmap (de-allocate) the MSI/MSI-X vector(s) we
need to provide the PIRQ and the vector value. What we did instead
was to provide the GSI (which was zero) and the vector value, and we
got these unhappy error messages:

(XEN) irq.c:1575: dom0: pirq 0 not mapped
[    7.733415] unmap irq failed -22

This patches fixes this and we use the PIRQ value instead of the GSI
value.

CC: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
14 years agoxen: set IO permission early (before early_cpu_init())
Konrad Rzeszutek Wilk [Tue, 16 Nov 2010 17:09:59 +0000 (12:09 -0500)]
xen: set IO permission early (before early_cpu_init())

This patch is based off "xen dom0: Set up basic IO permissions for dom0."
by Juan Quintela <quintela@redhat.com>.

On AMD machines when we boot the kernel as Domain 0 we get this nasty:

mapping kernel into physical memory
Xen: setup ISA identity maps
about to get started...
(XEN) traps.c:475:d0 Unhandled general protection fault fault/trap [#13] on VCPU 0 [ec=0000]
(XEN) domain_crash_sync called from entry.S
(XEN) Domain 0 (vcpu#0) crashed on cpu#0:
(XEN) ----[ Xen-4.1-101116  x86_64  debug=y  Not tainted ]----
(XEN) CPU:    0
(XEN) RIP:    e033:[<ffffffff8130271b>]
(XEN) RFLAGS: 0000000000000282   EM: 1   CONTEXT: pv guest
(XEN) rax: 000000008000c068   rbx: ffffffff8186c680   rcx: 0000000000000068
(XEN) rdx: 0000000000000cf8   rsi: 000000000000c000   rdi: 0000000000000000
(XEN) rbp: ffffffff81801e98   rsp: ffffffff81801e50   r8:  ffffffff81801eac
(XEN) r9:  ffffffff81801ea8   r10: ffffffff81801eb4   r11: 00000000ffffffff
(XEN) r12: ffffffff8186c694   r13: ffffffff81801f90   r14: ffffffffffffffff
(XEN) r15: 0000000000000000   cr0: 000000008005003b   cr4: 00000000000006f0
(XEN) cr3: 0000000221803000   cr2: 0000000000000000
(XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: e02b   cs: e033
(XEN) Guest stack trace from rsp=ffffffff81801e50:

RIP points to read_pci_config() function.

The issue is that we don't set IO permissions for the Linux kernel early enough.

The call sequence used to be:

    xen_start_kernel()
x86_init.oem.arch_setup = xen_setup_arch;
        setup_arch:
           - early_cpu_init
               - early_init_amd
                  - read_pci_config
           - x86_init.oem.arch_setup [ xen_arch_setup ]
               - set IO permissions.

We need to set the IO permissions earlier on, which this patch does.

Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
14 years agoof/phylib: Use device tree properties to initialize Marvell PHYs.
David Daney [Fri, 19 Nov 2010 12:13:18 +0000 (12:13 +0000)]
of/phylib: Use device tree properties to initialize Marvell PHYs.

Some aspects of PHY initialization are board dependent, things like
indicator LED connections and some clocking modes cannot be determined
by probing.  The dev_flags element of struct phy_device can be used to
control these things if an appropriate value can be passed from the
Ethernet driver.  We run into problems however if the PHY connections
are specified by the device tree.  There is no way for the Ethernet
driver to know what flags it should pass.

If we are using the device tree, the struct phy_device will be
populated with the device tree node corresponding to the PHY, and we
can extract extra configuration information from there.

The next question is what should the format of that information be?
It is highly device specific, and the device tree representation
should not be tied to any arbitrary kernel defined constants.  A
straight forward representation is just to specify the exact bits that
should be set using the "marvell,reg-init" property:

      phy5: ethernet-phy@5 {
        reg = <5>;
        compatible = "marvell,88e1149r";
        marvell,reg-init =
                /* led[0]:1000, led[1]:100, led[2]:10, led[3]:tx */
                <3 0x10 0 0x5777>, /* Reg 3,16 <- 0x5777 */
                /* mix %:0, led[0123]:drive low off hiZ */
                <3 0x11 0 0x00aa>, /* Reg 3,17 <- 0x00aa */
                /* default blink periods. */
                <3 0x12 0 0x4105>, /* Reg 3,18 <- 0x4105 */
                /* led[4]:rx, led[5]:dplx, led[45]:drive low off hiZ */
                <3 0x13 0 0x0a60>; /* Reg 3,19 <- 0x0a60 */
      };

      phy6: ethernet-phy@6 {
        reg = <6>;
        compatible = "marvell,88e1118";
        marvell,reg-init =
                /* Fix rx and tx clock transition timing */
                <2 0x15 0xffcf 0>, /* Reg 2,21 Clear bits 4, 5 */
                /* Adjust LED drive. */
                <3 0x11 0 0x442a>, /* Reg 3,17 <- 0442a */
                /* irq, blink-activity, blink-link */
                <3 0x10 0 0x0242>; /* Reg 3,16 <- 0x0242 */
      };

The Marvell PHYs have a page select register at register 22 (0x16), we
can specify any register by its page and register number.  These are
the first and second word.  The third word contains a mask to be ANDed
with the existing register value, and the fourth word is ORed with the
result to yield the new register value.  The new marvell_of_reg_init
function leaves the page select register unchanged, so a call to it
can be dropped into the .config_init functions without unduly
affecting the state of the PHY.

If CONFIG_OF_MDIO is not set, there is no of_node, or no
"marvell,reg-init" property, the PHY initialization is unchanged.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Cyril Chemparathy <cyril@ti.com>
Cc: David Daney <ddaney@caviumnetworks.com>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agophylib: Add support for Marvell 88E1149R devices.
David Daney [Fri, 19 Nov 2010 11:58:53 +0000 (11:58 +0000)]
phylib: Add support for Marvell 88E1149R devices.

The 88E1149R is 10/100/1000 quad-gigabit Ethernet PHY.  The
.config_aneg function can be shared with 88E1118, but it needs its own
.config_init.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: Cyril Chemparathy <cyril@ti.com>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agophylib: Use common page register definition for Marvell PHYs.
David Daney [Fri, 19 Nov 2010 11:58:52 +0000 (11:58 +0000)]
phylib: Use common page register definition for Marvell PHYs.

The definition of the Marvell PHY page register is not specific to
88E1121, so rename the macro to MII_MARVELL_PHY_PAGE, and use it
throughout.

Suggested-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: Cyril Chemparathy <cyril@ti.com>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoqlge: Fix incorrect usage of module parameters and netdev msg level
Sonny Rao [Thu, 18 Nov 2010 11:50:02 +0000 (11:50 +0000)]
qlge: Fix incorrect usage of module parameters and netdev msg level

Driver appears to be mistaking the permission field with default value
in the case of debug and qlge_irq_type.

Driver is also passing debug as a bitmask into netif_msg_init()
which wants a number of bits.  Ron Mercer suggests we should
change this to pass in -1 so the defaults get used instead,
which makes the default much less verbose.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Sonny Rao <sonnyrao@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoipv6: fix missing in6_ifa_put in addrconf
John Fastabend [Mon, 15 Nov 2010 20:29:21 +0000 (20:29 +0000)]
ipv6: fix missing in6_ifa_put in addrconf

Fix ref count bug introduced by

commit 2de795707294972f6c34bae9de713e502c431296
Author: Lorenzo Colitti <lorenzo@google.com>
Date:   Wed Oct 27 18:16:49 2010 +0000

ipv6: addrconf: don't remove address state on ifdown if the address
is being kept

Fix logic so that addrconf_ifdown() decrements the inet6_ifaddr
refcnt correctly with in6_ifa_put().

Reported-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoALSA: hda - Fixed ALC887-VD initial error
Kailang Yang [Mon, 22 Nov 2010 09:59:36 +0000 (10:59 +0100)]
ALSA: hda - Fixed ALC887-VD initial error

ALC887-VD is like ALC888-VD. It can not be initialized as ALC882.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: atmel - Fix the return value in error path
Takashi Iwai [Mon, 22 Nov 2010 07:58:13 +0000 (08:58 +0100)]
ALSA: atmel - Fix the return value in error path

In the commit c0763e687d0283d0db507813ca4462aa4073c5b5
    ALSA: snd-atmel-abdac: test wrong variable
the return value via PTR_ERR() had to be fixed as well.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: hda: Use hp-laptop quirk to enable headphones automute for Asus A52J
Daniel T Chen [Sun, 21 Nov 2010 19:01:14 +0000 (14:01 -0500)]
ALSA: hda: Use hp-laptop quirk to enable headphones automute for Asus A52J

BugLink: https://launchpad.net/bugs/677652
The original reporter states that, in 2.6.35, headphones do not appear
to work, nor does inserting them mute the A52J's onboard speakers.  Upon
inspecting the codec dump, it appears that the newly committed hp-laptop
quirk will suffice to enable this basic functionality.  Testing was done
with an alsa-driver build from 2010-11-21.

Reported-and-tested-by: Joan Creus
Cc: <stable@kernel.org> [2.6.35+]
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: snd-atmel-abdac: test wrong variable
Vasiliy Kulikov [Sun, 21 Nov 2010 17:40:07 +0000 (20:40 +0300)]
ALSA: snd-atmel-abdac: test wrong variable

After clk_get() pclk is checked second time instead of sample_clk check.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: azt3328: period bug fix (for PA), add missing ACK on stop timer
Andreas Mohr [Sun, 21 Nov 2010 11:09:32 +0000 (12:09 +0100)]
ALSA: azt3328: period bug fix (for PA), add missing ACK on stop timer

. Fix PulseAudio "ALSA driver bug" issue
  (if we have two alternated areas within a 64k DMA buffer, then max
  period size should obviously be 32k only).
  Back references:
   http://pulseaudio.org/wiki/AlsaIssues
   http://fedoraproject.org/wiki/Features/GlitchFreeAudio
. In stop timer function, need to supply ACK in the timer control byte.
. Minor log output correction

When I did my first PA testing recently, the period size bug resulted
in quite precisely observeable half-period-based playback distortion.

PA-based operation is quite a bit more underrun-prone (despite its
zero-copy optimizations etc.) than raw ALSA with this rather spartan
sound hardware implementation on my puny Athlon.

Note that even with this patch, azt3328 still doesn't work for both
cases yet, PA tsched=0 and tsched
(on tsched=0 it will playback tiny fragments of periods, leading to tiny
stuttering sounds with some pauses in between, whereas with
timer-scheduled operation playback works fine - minus some quite increased
underrun trouble on PA vs. ALSA, that is).

Signed-off-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: hda: Add Samsung R720 SSID for subwoofer pin fixup
Daniel T Chen [Sat, 20 Nov 2010 15:20:35 +0000 (10:20 -0500)]
ALSA: hda: Add Samsung R720 SSID for subwoofer pin fixup

BugLink: https://launchpad.net/bugs/677830
The original reporter states that the subwoofer does not mute when
inserting headphones.  We need an entry for his machine's SSID in the
subwoofer pin fixup list, so add it there (verified using hda_analyzer).

Reported-and-tested-by: i-NoD
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: sound/pci/asihpi/hpioctl.c: Remove unnecessary casts of pci_get_drvdata
Joe Perches [Mon, 15 Nov 2010 20:14:02 +0000 (12:14 -0800)]
ALSA: sound/pci/asihpi/hpioctl.c: Remove unnecessary casts of pci_get_drvdata

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: sound/core/pcm_lib.c: Remove unnecessary semicolons
Joe Perches [Mon, 15 Nov 2010 03:05:02 +0000 (19:05 -0800)]
ALSA: sound/core/pcm_lib.c: Remove unnecessary semicolons

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: sound/ppc: Use printf extension %pR for struct resource
Joe Perches [Fri, 12 Nov 2010 21:38:04 +0000 (13:38 -0800)]
ALSA: sound/ppc: Use printf extension %pR for struct resource

Using %pR standardizes the struct resource output.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: ac97: Apply quirk for Dell Latitude D610 binding Master and Headphone controls
Daniel T Chen [Mon, 1 Nov 2010 05:14:51 +0000 (01:14 -0400)]
ALSA: ac97: Apply quirk for Dell Latitude D610 binding Master and Headphone controls

BugLink: https://launchpad.net/bugs/669279
The original reporter states: "The Master mixer does not change the
volume from the headphone output (which is affected by the headphone
mixer). Instead it only seems to control the on-board speaker volume.
This confuses PulseAudio greatly as the Master channel is merged into
the volume mix."

Fix this symptom by applying the hp_only quirk for the reporter's SSID.
The fix is applicable to all stable kernels.

Reported-and-tested-by: Ben Gamari <bgamari@gmail.com>
Cc: <stable@kernel.org> [2.6.32+]
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoLinux 2.6.37-rc3
Linus Torvalds [Sun, 21 Nov 2010 23:18:56 +0000 (15:18 -0800)]
Linux 2.6.37-rc3

14 years agoSuperH IrDA: correct Baud rate error correction
Nicolas Kaiser [Thu, 18 Nov 2010 14:24:02 +0000 (14:24 +0000)]
SuperH IrDA: correct Baud rate error correction

It looks to me as if the second value of rate_err_array is intended
to be a decimal 625. However, with a leading 0 it becomes an octal
constant, and as such evaluates to a decimal 405.

Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoatl1c: Fix hardware type check for enabling OTP CLK
Ben Hutchings [Sun, 21 Nov 2010 18:06:48 +0000 (10:06 -0800)]
atl1c: Fix hardware type check for enabling OTP CLK

Commit 496c185c9495629ef1c65387cb2594578393cfe0 "atl1c: Add support
for Atheros AR8152 and AR8152" added the condition:

             if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c_b)

for enabling OTP CLK, and the condition:

             if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c)

for disabling OTP CLK.  Since the two previously defined hardware
types are athr_l1c and athr_l2c, the latter condition appears to be
the correct one.  Change the former to match.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonet: allow GFP_HIGHMEM in __vmalloc()
Eric Dumazet [Sat, 20 Nov 2010 07:46:35 +0000 (07:46 +0000)]
net: allow GFP_HIGHMEM in __vmalloc()

We forgot to use __GFP_HIGHMEM in several __vmalloc() calls.

In ceph, add the missing flag.

In fib_trie.c, xfrm_hash.c and request_sock.c, using vzalloc() is
cleaner and allows using HIGHMEM pages as well.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agobonding: change list contact to netdev@vger.kernel.org
Simon Horman [Sun, 21 Nov 2010 17:58:04 +0000 (09:58 -0800)]
bonding: change list contact to netdev@vger.

bonding-devel@lists.sourceforge.net seems only receive spam
and discussion seems to already occur on netdev@vger.kernel.org.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoe1000: fix screaming IRQ
Anupam Chanda [Sun, 21 Nov 2010 17:54:21 +0000 (09:54 -0800)]
e1000: fix screaming IRQ

VMWare reports that the e1000 driver has a bug when bringing down the
interface, such that interrupts are not disabled in the hardware but the
driver stops reporting that it consumed the interrupt.

The fix is to set the driver's "down" flag later in the routine,
after all the timers and such have exited, preventing the interrupt
handler from being called and exiting early without handling the
interrupt.

CC: Anupam Chanda <anupamc@vmware.com>
CC: stable kernel <stable@kernel.org>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoxen: re-enable boot-time ballooning
Jeremy Fitzhardinge [Sat, 20 Nov 2010 07:27:06 +0000 (23:27 -0800)]
xen: re-enable boot-time ballooning

Now that the balloon driver doesn't stumble over non-RAM pages, we
can enable the extra space for ballooning.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
14 years agoxen/balloon: make sure we only include remaining extra ram
Jeremy Fitzhardinge [Tue, 14 Sep 2010 17:32:32 +0000 (10:32 -0700)]
xen/balloon: make sure we only include remaining extra ram

If the user specifies mem= on the kernel command line, some or all
of the extra memory E820 region may be clipped away, so make sure
we don't try to add more extra memory than exists in E820.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
14 years agoxen/balloon: the balloon_lock is useless
Jeremy Fitzhardinge [Fri, 3 Sep 2010 06:11:17 +0000 (23:11 -0700)]
xen/balloon: the balloon_lock is useless

The balloon_lock is useless, since it protects nothing against nothing.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
14 years agoxen: add extra pages to balloon
Jeremy Fitzhardinge [Tue, 31 Aug 2010 22:01:16 +0000 (15:01 -0700)]
xen: add extra pages to balloon

Add extra pages in the pseudo-physical address space to the balloon
so we can extend into them later.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
14 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Linus Torvalds [Sat, 20 Nov 2010 03:46:45 +0000 (19:46 -0800)]
Merge branch 'for_linus' of git://git./linux/kernel/git/tytso/ext4

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: Add EXT4_IOC_TRIM ioctl to handle batched discard
  fs: Do not dispatch FITRIM through separate super_operation
  ext4: ext4_fill_super shouldn't return 0 on corruption
  jbd2: fix /proc/fs/jbd2/<dev> when using an external journal
  ext4: missing unlock in ext4_clear_request_list()
  ext4: fix setting random pages PageUptodate

14 years agoext4: Add EXT4_IOC_TRIM ioctl to handle batched discard
Lukas Czerner [Sat, 20 Nov 2010 02:47:07 +0000 (21:47 -0500)]
ext4: Add EXT4_IOC_TRIM ioctl to handle batched discard

Filesystem independent ioctl was rejected as not common enough to be in
core vfs ioctl. Since we still need to access to this functionality this
commit adds ext4 specific ioctl EXT4_IOC_TRIM to dispatch
ext4_trim_fs().

It takes fstrim_range structure as an argument. fstrim_range is definec in
the include/linux/fs.h and its definition is as follows.

struct fstrim_range {
__u64 start;
__u64 len;
__u64 minlen;
}

start - first Byte to trim
len - number of Bytes to trim from start
minlen - minimum extent length to trim, free extents shorter than this
  number of Bytes will be ignored. This will be rounded up to fs
  block size.

After the FITRIM is done, the number of actually discarded Bytes is stored
in fstrim_range.len to give the user better insight on how much storage
space has been really released for wear-leveling.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agofs: Do not dispatch FITRIM through separate super_operation
Lukas Czerner [Sat, 20 Nov 2010 02:18:35 +0000 (21:18 -0500)]
fs: Do not dispatch FITRIM through separate super_operation

There was concern that FITRIM ioctl is not common enough to be included
in core vfs ioctl, as Christoph Hellwig pointed out there's no real point
in dispatching this out to a separate vector instead of just through
->ioctl.

So this commit removes ioctl_fstrim() from vfs ioctl and trim_fs
from super_operation structure.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
Linus Torvalds [Fri, 19 Nov 2010 23:32:22 +0000 (15:32 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  ceph: fix readdir EOVERFLOW on 32-bit archs
  ceph: fix frag offset for non-leftmost frags
  ceph: fix dangling pointer
  ceph: explicitly specify page alignment in network messages
  ceph: make page alignment explicit in osd interface
  ceph: fix comment, remove extraneous args
  ceph: fix update of ctime from MDS
  ceph: fix version check on racing inode updates
  ceph: fix uid/gid on resent mds requests
  ceph: fix rdcache_gen usage and invalidate
  ceph: re-request max_size if cap auth changes
  ceph: only let auth caps update max_size
  ceph: fix open for write on clustered mds
  ceph: fix bad pointer dereference in ceph_fill_trace
  ceph: fix small seq message skipping
  Revert "ceph: update issue_seq on cap grant"

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Fri, 19 Nov 2010 23:25:59 +0000 (15:25 -0800)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (31 commits)
  net: fix kernel-doc for sk_filter_rcu_release
  be2net: Fix to avoid firmware update when interface is not open.
  netfilter: fix IP_VS dependencies
  net: irda: irttp: sync error paths of data- and udata-requests
  ipv6: Expose reachable and retrans timer values as msecs
  ipv6: Expose IFLA_PROTINFO timer values in msecs instead of jiffies
  3c59x: fix build failure on !CONFIG_PCI
  ipg.c: remove id [SUNDANCE, 0x1021]
  net: caif: spi: fix potential NULL dereference
  ath9k_htc: Avoid setting QoS control for non-QoS frames
  net: zero kobject in rx_queue_release
  net: Fix duplicate volatile warning.
  MAINTAINERS: Add stmmac maintainer
  bonding: fix a race in IGMP handling
  cfg80211: fix can_beacon_sec_chan, reenable HT40
  gianfar: fix signedness issue
  net: bnx2x: fix error value sign
  8139cp: fix checksum broken
  r8169: fix checksum broken
  rds: Integer overflow in RDS cmsg handling
  ...

14 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Fri, 19 Nov 2010 19:59:49 +0000 (11:59 -0800)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  sata_via: apply magic FIFO fix to vt6420 too

14 years agoRevert "kernel: make /proc/kallsyms mode 400 to reduce ease of attacking"
Linus Torvalds [Fri, 19 Nov 2010 19:54:40 +0000 (11:54 -0800)]
Revert "kernel: make /proc/kallsyms mode 400 to reduce ease of attacking"

This reverts commit 59365d136d205cc20fe666ca7f89b1c5001b0d5a.

It turns out that this can break certain existing user land setups.
Quoth Sarah Sharp:

 "On Wednesday, I updated my branch to commit 460781b from linus' tree,
  and my box would not boot.  klogd segfaulted, which stalled the whole
  system.

  At first I thought it actually hung the box, but it continued booting
  after 5 minutes, and I was able to log in.  It dropped back to the
  text console instead of the graphical bootup display for that period
  of time.  dmesg surprisingly still works.  I've bisected the problem
  down to this commit (commit 59365d136d205cc20fe666ca7f89b1c5001b0d5a)

  The box is running klogd 1.5.5ubuntu3 (from Jaunty).  Yes, I know
  that's old.  I read the bit in the commit about changing the
  permissions of kallsyms after boot, but if I can't boot that doesn't
  help."

So let's just keep the old default, and encourage distributions to do
the "chmod -r /proc/kallsyms" in their bootup scripts.  This is not
worth a kernel option to change default behavior, since it's so easily
done in user space.

Reported-and-bisected-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Marcus Meissner <meissner@suse.de>
Cc: Tejun Heo <tj@kernel.org>
Cc: Eugene Teo <eugeneteo@kernel.org>
Cc: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Fri, 19 Nov 2010 18:31:04 +0000 (10:31 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: fix typo in keycode validation supporting large scancodes
  Input: aiptek - tighten up permissions on sysfs attributes
  Input: sysrq - pass along lone Alt + SysRq

14 years agoMerge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle...
Linus Torvalds [Fri, 19 Nov 2010 18:28:13 +0000 (10:28 -0800)]
Merge branch 'drm-intel-fixes' of git://git./linux/kernel/git/ickle/drm-intel

* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel:
  drm/i915: Disable FBC on Ironlake to save 1W
  drm/i915: Take advantage of auto-polling CRT hotplug detection on PCH hardware
  drm/i915/crt: Introduce struct intel_crt
  drm/i915: Do not hold mutex when faulting in user addresses
  drm: radeon: fix error value sign
  drm/radeon/kms: fix and unify tiled buffer alignment checking for r6xx/7xx
  drm/i915: Retire any pending operations on the old scanout when switching
  drm/i915: Fix I2C adapter registration

14 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Fri, 19 Nov 2010 18:27:57 +0000 (10:27 -0800)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (40 commits)
  drm/radeon/kms: i2c s/sprintf/snprintf/g for safety
  drm/radeon/kms: fix i2c pad masks on rs4xx
  drm/ttm: Fix up a theoretical deadlock
  drm/radeon/kms: fix tiling info on evergreen
  drm/radeon/kms: fix alignment when allocating buffers
  drm/vmwgfx: Fix up an error path during bo creation
  drm/radeon/kms: register an i2c adapter name for the dp aux bus
  drm/radeon/kms/atom: add proper external encoders support
  drm/radeon/kms/atom: cleanup and unify DVO handling
  drm/radeon/kms: properly power up/down the eDP panel as needed (v4)
  drm/radeon/kms/atom: set sane defaults in atombios_get_encoder_mode()
  drm/radeon/kms: turn the backlight off explicitly for dpms
  drm/radeon/kms: fix typo in r600 cs checker
  drm: radeon: fix error value sign
  drm/radeon/kms: fix and unify tiled buffer alignment checking for r6xx/7xx
  nouveau: Acknowledge HPD irq in handler, not bottom half
  drm/nouveau: Fix a few confusions between "chipset" and "card_type".
  drm/nouveau: don't expose backlight control when available through ACPI
  drm/nouveau/pm: improve memtiming mappings
  drm/nouveau: Make PCIE GART size depend on the available RAMIN space.
  ...

14 years agosata_via: apply magic FIFO fix to vt6420 too
Tejun Heo [Fri, 19 Nov 2010 14:29:19 +0000 (15:29 +0100)]
sata_via: apply magic FIFO fix to vt6420 too

vt6420 has the same FIFO overflow problem as vt6421 when combined with
certain devices.  This patch applies the magic fix to vt6420 too.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Martin Qvist <q@maq.dk>
Reported-by: Peter Zijlstra <peterz@infradead.org>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agonet: fix kernel-doc for sk_filter_rcu_release
Randy Dunlap [Thu, 18 Nov 2010 13:02:37 +0000 (13:02 +0000)]
net: fix kernel-doc for sk_filter_rcu_release

Fix kernel-doc warning for sk_filter_rcu_release():

Warning(net/core/filter.c:586): missing initial short description on line:
 *  sk_filter_rcu_release: Release a socket filter by rcu_head

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agobe2net: Fix to avoid firmware update when interface is not open.
Sarveshwar Bandi [Thu, 18 Nov 2010 23:44:45 +0000 (23:44 +0000)]
be2net: Fix to avoid firmware update when interface is not open.

Since interrupts are enabled only when open is called on the interface,
Attempting a firmware update operation when interface is down could lead to
partial success or failure of operation. This fix fails the request if
netif_running is false.

Signed-off-by: Sarveshwar Bandi <Sarveshwar.Bandi@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoext4: ext4_fill_super shouldn't return 0 on corruption
Darrick J. Wong [Fri, 19 Nov 2010 14:56:44 +0000 (09:56 -0500)]
ext4: ext4_fill_super shouldn't return 0 on corruption

At the start of ext4_fill_super, ret is set to -EINVAL, and any failure path
out of that function returns ret.  However, the generic_check_addressable
clause sets ret = 0 (if it passes), which means that a subsequent failure (e.g.
a group checksum error) returns 0 even though the mount should fail.  This
causes vfs_kern_mount in turn to think that the mount succeeded, leading to an
oops.

A simple fix is to avoid using ret for the generic_check_addressable check,
which was last changed in commit 30ca22c70e3ef0a96ff84de69cd7e8561b416cb2.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
14 years agoASoC: uda134x - set reg_cache_default to uda134x_reg
Axel Lin [Fri, 19 Nov 2010 07:48:06 +0000 (15:48 +0800)]
ASoC: uda134x - set reg_cache_default to uda134x_reg

After checking the code in 2.6.36,
I found this is missing during multi-component conversion.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
14 years agodrm/i915: Disable FBC on Ironlake to save 1W
Alex Shi [Fri, 19 Nov 2010 09:33:55 +0000 (09:33 +0000)]
drm/i915: Disable FBC on Ironlake to save 1W

Frame buffer compression is broken on Ironlake due to buggy hardware.
Currently it is disabled through chicken bits, but it still consumes
over 1W more than if we simply never attempt to enable the FBC code
paths.

Signed-off-by: Alex Shi <alex.shi@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
14 years agodrm/i915: Take advantage of auto-polling CRT hotplug detection on PCH hardware
Keith Packard [Tue, 16 Nov 2010 08:03:53 +0000 (16:03 +0800)]
drm/i915: Take advantage of auto-polling CRT hotplug detection on PCH hardware

Both IBX and CPT have an automatic hotplug detection mode which appears to work reliably enough
that we can dispense with the manual force hotplug trigger stuff. This means that
hotplug detection is as simple as reading the current hotplug register values.

The first time the hotplug detection is activated, the code synchronously waits for a hotplug
sequence in case the hardware hasn't bothered to do a detection cycle since being initialized.

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
14 years agodrm/i915/crt: Introduce struct intel_crt
Chris Wilson [Tue, 16 Nov 2010 10:58:37 +0000 (10:58 +0000)]
drm/i915/crt: Introduce struct intel_crt

We will use this structure in future patches to store CRT specific
information on the encoder.

Split out and tweaked from a patch by Keith Packard.

Signed-off-by: Keith Packard <keithp@kithp.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
14 years agodrm/i915: Do not hold mutex when faulting in user addresses
Chris Wilson [Wed, 17 Nov 2010 09:10:42 +0000 (09:10 +0000)]
drm/i915: Do not hold mutex when faulting in user addresses

Linus Torvalds found that it was rather trivial to trigger a system
freeze:

  In fact, with lockdep, I don't even need to do the sysrq-d thing: it
  shows the bug as it happens. It's the X server taking the same lock
  recursively.

  Here's the problem:

    =============================================
    [ INFO: possible recursive locking detected ]
    2.6.37-rc2-00012-gbdbd01a #7
    ---------------------------------------------
    Xorg/2816 is trying to acquire lock:
     (&dev->struct_mutex){+.+.+.}, at: [<ffffffff812c626c>] i915_gem_fault+0x50/0x17e

    but task is already holding lock:
     (&dev->struct_mutex){+.+.+.}, at: [<ffffffff812c403b>] i915_mutex_lock_interruptible+0x28/0x4a

    other info that might help us debug this:
    2 locks held by Xorg/2816:
     #0:  (&dev->struct_mutex){+.+.+.}, at: [<ffffffff812c403b>] i915_mutex_lock_interruptible+0x28/0x4a
     #1:  (&mm->mmap_sem){++++++}, at: [<ffffffff81022d4f>] page_fault+0x156/0x37b

This recursion was introduced by rearranging the locking to avoid the
double locking on the fast path (4f27b5d and fbd5a26d) and the
introduction of the prefault to encourage the fast paths (b5e4f2b). In
order to undo the problem, we rearrange the code to perform the access
validation upfront, attempt to prefault and then fight for control of the
mutex.  the best case scenario where the mutex is uncontended the
prefaulting is not wasted.

Reported-and-tested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>