11 years agoMerge branch 'master' into for-next
Jiri Kosina [Tue, 15 Feb 2011 09:24:31 +0000 (10:24 +0100)]
Merge branch 'master' into for-next

11 years agoklist: Fix object alignment on 64-bit.
David Miller [Mon, 14 Feb 2011 00:37:07 +0000 (16:37 -0800)]
klist: Fix object alignment on 64-bit.

Commit c0e69a5bbc6f ("klist.c: bit 0 in pointer can't be used as flag")
intended to make sure that all klist objects were at least pointer size
aligned, but used the constant "4" which only works on 32-bit.

Use "sizeof(void *)" which is correct in all cases.

Signed-off-by: David S. Miller <>
Acked-by: Jesper Nilsson <>
Cc: stable <>
Cc: Greg Kroah-Hartman <>
Signed-off-by: Linus Torvalds <>
11 years agoMerge branch 'spi/merge' of git://
Linus Torvalds [Sun, 13 Feb 2011 15:59:48 +0000 (07:59 -0800)]
Merge branch 'spi/merge' of git://

* 'spi/merge' of git://
  devicetree-discuss is moderated for non-subscribers
  MAINTAINERS: Add entry for GPIO subsystem
  dt: add documentation of ARM dt boot interface
  dt: Remove obsolete description of powerpc boot interface
  dt: Move device tree documentation out of powerpc directory
  spi/spi_sh_msiof: fix wrong address calculation, which leads to an Oops

11 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Sun, 13 Feb 2011 15:58:50 +0000 (07:58 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://
  ALSA: hda - add quirk for Ordissimo EVE using a realtek ALC662
  ALSA: hrtimer: remove superfluous tasklet invocation
  ALSA: hrtimer: handle delayed timer interrupts
  ALSA: HDA: Add subwoofer quirk for Acer Aspire 8942G
  ALSA: hda - Don't handle empty patch files
  ALSA: hda - Fix missing CA initialization for HDMI/DP
  ALSA: usbaudio - Enable the E-MU 0204 USB
  ALSA: hda - switch lfe with side in mixer for 4930g
  ASoC: Improve WM8994 digital power sequencing
  ASoC: Create an AIF1ADCDAT signal widget to match AIF2
  asoc: davinci: da830/omap-l137: correct cpu_dai_name
  ASoC: fill in snd_soc_pcm_runtime.card before calling snd_soc_dai_link.init()

11 years agoRevert "pci: use security_capable() when checking capablities during config space...
Linus Torvalds [Sun, 13 Feb 2011 15:50:50 +0000 (07:50 -0800)]
Revert "pci: use security_capable() when checking capablities during config space read"

This reverts commit 47970b1b2aa64464bc0a9543e86361a622ae7c03.

It turns out it breaks several distributions.  Looks like the stricter
selinux checks fail due to selinux policies not being set to allow the
access - breaking X, but also lspci.

So while the change was clearly the RightThing(tm) to do in theory, in
practice we have backwards compatibility issues making it not work.

Reported-by: Dave Young <>
Acked-by: David Airlie <>
Acked-by: Alex Riesen <>
Cc: Eric Paris <>
Cc: Chris Wright <>
Cc: James Morris <>
Signed-off-by: Linus Torvalds <>
11 years agoMerge branch 'fix/asoc' into for-linus
Takashi Iwai [Sun, 13 Feb 2011 09:05:30 +0000 (10:05 +0100)]
Merge branch 'fix/asoc' into for-linus

11 years agoMerge branch 'devicetree/merge' into spi/merge
Grant Likely [Sun, 13 Feb 2011 06:53:34 +0000 (23:53 -0700)]
Merge branch 'devicetree/merge' into spi/merge

11 years agodevicetree-discuss is moderated for non-subscribers
Paul Bolle [Sat, 12 Feb 2011 11:33:59 +0000 (12:33 +0100)]
devicetree-discuss is moderated for non-subscribers

Signed-off-by: Paul Bolle <>
Signed-off-by: Grant Likely <>
11 years agoMAINTAINERS: Add entry for GPIO subsystem
Grant Likely [Sat, 12 Feb 2011 08:48:14 +0000 (01:48 -0700)]
MAINTAINERS: Add entry for GPIO subsystem

I'll probably regret this....

Signed-off-by: Grant Likely <>
Signed-off-by: Linus Torvalds <>
11 years agoMerge branch 'for_linus' of git://
Linus Torvalds [Sat, 12 Feb 2011 17:10:24 +0000 (09:10 -0800)]
Merge branch 'for_linus' of git://git./linux/kernel/git/tytso/ext4

* 'for_linus' of git://
  jbd2: call __jbd2_log_start_commit with j_state_lock write locked
  ext4: serialize unaligned asynchronous DIO
  ext4: make grpinfo slab cache names static
  ext4: Fix data corruption with multi-block writepages support
  ext4: fix up ext4 error handling
  ext4: unregister features interface on module unload
  ext4: fix panic on module unload when stopping lazyinit thread

11 years agojbd2: call __jbd2_log_start_commit with j_state_lock write locked
Theodore Ts'o [Sat, 12 Feb 2011 13:18:24 +0000 (08:18 -0500)]
jbd2: call __jbd2_log_start_commit with j_state_lock write locked

On an SMP ARM system running ext4, I've received a report that the
first J_ASSERT in jbd2_journal_commit_transaction has been triggering:

J_ASSERT(journal->j_running_transaction != NULL);

While investigating possible causes for this problem, I noticed that
__jbd2_log_start_commit() is getting called with j_state_lock only
read-locked, in spite of the fact that it's possible for it might
j_commit_request.  Fix this by grabbing the necessary information so
we can test to see if we need to start a new transaction before
dropping the read lock, and then calling jbd2_log_start_commit() which
will grab the write lock.

Signed-off-by: "Theodore Ts'o" <>
11 years agoext4: serialize unaligned asynchronous DIO
Eric Sandeen [Sat, 12 Feb 2011 13:17:34 +0000 (08:17 -0500)]
ext4: serialize unaligned asynchronous DIO

ext4 has a data corruption case when doing non-block-aligned
asynchronous direct IO into a sparse file, as demonstrated
by xfstest 240.

The root cause is that while ext4 preallocates space in the
hole, mappings of that space still look "new" and
dio_zero_block() will zero out the unwritten portions.  When
more than one AIO thread is going, they both find this "new"
block and race to zero out their portion; this is uncoordinated
and causes data corruption.

Dave Chinner fixed this for xfs by simply serializing all
unaligned asynchronous direct IO.  I've done the same here.
The difference is that we only wait on conversions, not all IO.
This is a very big hammer, and I'm not very pleased with
stuffing this into ext4_file_write().  But since ext4 is
DIO_LOCKING, we need to serialize it at this high level.

I tried to move this into ext4_ext_direct_IO, but by then
we have the i_mutex already, and we will wait on the
work queue to do conversions - which must also take the
i_mutex.  So that won't work.

This was originally exposed by qemu-kvm installing to
a raw disk image with a normal sector-63 alignment.  I've
tested a backport of this patch with qemu, and it does
avoid the corruption.  It is also quite a lot slower
(14 min for package installs, vs. 8 min for well-aligned)
but I'll take slow correctness over fast corruption any day.

Mingming suggested that we can track outstanding
conversions, and wait on those so that non-sparse
files won't be affected, and I've implemented that here;
unaligned AIO to nonsparse files won't take a perf hit.

[ Keep the mutex as a hashed array instead
 of bloating the ext4 inode]

[ Fix up namespace issues so that global
 variables are protected with an "ext4_" prefix.]

Signed-off-by: Eric Sandeen <>
Signed-off-by: "Theodore Ts'o" <>
11 years agoext4: make grpinfo slab cache names static
Eric Sandeen [Sat, 12 Feb 2011 13:12:18 +0000 (08:12 -0500)]
ext4: make grpinfo slab cache names static

In 2.6.37 I was running into oopses with repeated module
loads & unloads.  I tracked this down to:

fb1813f4 ext4: use dedicated slab caches for group_info structures

(this was in addition to the features advert unload problem)

The kstrdup & subsequent kfree of the cache name was causing
a double free.  In slub, at least, if I read it right it allocates
& frees the name itself, slab seems to do something different...
so in slub I think we were leaking -our- cachep->name, and double
freeing the one allocated by slub.

After getting lost in slab/slub/slob a bit, I just looked at other
sized-caches that get allocated.  jbd2, biovec, sgpool all do it
more or less the way jbd2 does.  Below patch follows the jbd2
method of dynamically allocating a cache at mount time from
a list of static names.

(This might also possibly fix a race creating the caches with
parallel mounts running).

[Folded in a fix from Dan Carpenter which fixed an off-by-one error in
the original patch]

Signed-off-by: Eric Sandeen <>
Signed-off-by: "Theodore Ts'o" <>
11 years agoMAINTAINERS: Add entry for GPIO subsystem
Grant Likely [Sat, 12 Feb 2011 08:45:55 +0000 (01:45 -0700)]
MAINTAINERS: Add entry for GPIO subsystem

I'll probably regret this....

Signed-off-by: Grant Likely <>
11 years agoMerge branch 'kvm-updates/2.6.38' of git://
Linus Torvalds [Sat, 12 Feb 2011 00:30:09 +0000 (16:30 -0800)]
Merge branch 'kvm-updates/2.6.38' of git://git./virt/kvm/kvm

* 'kvm-updates/2.6.38' of git://
  KVM: SVM: Make sure KERNEL_GS_BASE is valid when loading gs_index

11 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Sat, 12 Feb 2011 00:30:05 +0000 (16:30 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/bp/bp

* 'for-linus' of git://
  amd64_edac: Fix DIMMs per DCTs output

11 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Sat, 12 Feb 2011 00:29:57 +0000 (16:29 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/teigland/dlm

* 'for-linus' of git://
  dlm: use single thread workqueues

11 years agoMerge git://
Linus Torvalds [Sat, 12 Feb 2011 00:29:50 +0000 (16:29 -0800)]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6

* git://
  cifs: don't always drop malformed replies on the floor (try #3)
  cifs: clean up checks in cifs_echo_request
  [CIFS] Do not send SMBEcho requests on new sockets until SMBNegotiate

11 years agoMerge branch 'hwmon-for-linus' of git://
Linus Torvalds [Sat, 12 Feb 2011 00:16:25 +0000 (16:16 -0800)]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/staging

* 'hwmon-for-linus' of git://
  hwmon: (emc1403) Fix I2C address range
  hwmon: (lm63) Consider LM64 temperature offset

11 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Sat, 12 Feb 2011 00:16:03 +0000 (16:16 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://
  pci: use security_capable() when checking capablities during config space read
  security: add cred argument to security_capable()
  tpm_tis: Use timeouts returned from TPM

11 years agoMerge branch 's5p-fixes-for-linus' of git://
Linus Torvalds [Sat, 12 Feb 2011 00:15:15 +0000 (16:15 -0800)]
Merge branch 's5p-fixes-for-linus' of git://git./linux/kernel/git/kgene/linux-samsung

* 's5p-fixes-for-linus' of git://
  ARM: SAMSUNG: Ensure struct sys_device is declared in plat/pm.h
  ARM: S5PV310: Cleanup System MMU
  ARM: S5PV310: Add support System MMU on SMDKV310

11 years agoMerge branch 'next' of git://
Linus Torvalds [Sat, 12 Feb 2011 00:13:53 +0000 (16:13 -0800)]
Merge branch 'next' of git://

* 'next' of git://
  microblaze: Fix msr instruction detection
  microblaze: Fix pte_update function
  microblaze: Fix asm compilation warning
  microblaze: Fix IRQ flag handling for MSR=0

11 years agodrivers/w1/masters/omap_hdq.c: add missing clk_put
Julia Lawall [Thu, 10 Feb 2011 23:01:37 +0000 (15:01 -0800)]
drivers/w1/masters/omap_hdq.c: add missing clk_put

This code makes two calls to clk_get, then test both return values and
fails if either failed.

The problem is that in the first inner if, where the first call to
clk_get has failed, it don't know if the second call has failed as well.
So it don't know whether clk_get should be called on the result of the
second call.  Of course, it would be possible to test that value again.
A simpler solution is just to test the result of calling clk_get
directly after each call.

The semantic match that finds this problem is as follows:

// <smpl>
position p1,p2;
expression e;
statement S;

e = clk_get@p1(...)
if@p2 (IS_ERR(e)) S

expression e;
statement S;
identifier l;
position r.p1, p2 != r.p2;

*e = clk_get@p1(...)
... when != clk_put(e)
*if@p2 (...)
  ... when != clk_put(e)
* return ...;
}// </smpl>

Signed-off-by: Julia Lawall <>
Cc: Evgeniy Polyakov <>
Acked-by: Tony Lindgren <>
Acked-by: Amit Kucheria <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
11 years agomemcg: fix leak of accounting at failure path of hugepage collapsing
KAMEZAWA Hiroyuki [Thu, 10 Feb 2011 23:01:36 +0000 (15:01 -0800)]
memcg: fix leak of accounting at failure path of hugepage collapsing

mem_cgroup_uncharge_page() should be called in all failure cases after
mem_cgroup_charge_newpage() is called in huge_memory.c::collapse_huge_page()

 [ 4209.076861] BUG: Bad page state in process khugepaged  pfn:1e9800
 [ 4209.077601] page:ffffea0006b14000 count:0 mapcount:0 mapping:          (null) index:0x2800
 [ 4209.078674] page flags: 0x40000000004000(head)
 [ 4209.079294] pc:ffff880214a30000 pc->flags:2146246697418756 pc->mem_cgroup:ffffc9000177a000
 [ 4209.082177] (/A)
 [ 4209.082500] Pid: 31, comm: khugepaged Not tainted 2.6.38-rc3-mm1 #1
 [ 4209.083412] Call Trace:
 [ 4209.083678]  [<ffffffff810f4454>] ? bad_page+0xe4/0x140
 [ 4209.084240]  [<ffffffff810f53e6>] ? free_pages_prepare+0xd6/0x120
 [ 4209.084837]  [<ffffffff8155621d>] ? rwsem_down_failed_common+0xbd/0x150
 [ 4209.085509]  [<ffffffff810f5462>] ? __free_pages_ok+0x32/0xe0
 [ 4209.086110]  [<ffffffff810f552b>] ? free_compound_page+0x1b/0x20
 [ 4209.086699]  [<ffffffff810fad6c>] ? __put_compound_page+0x1c/0x30
 [ 4209.087333]  [<ffffffff810fae1d>] ? put_compound_page+0x4d/0x200
 [ 4209.087935]  [<ffffffff810fb015>] ? put_page+0x45/0x50
 [ 4209.097361]  [<ffffffff8113f779>] ? khugepaged+0x9e9/0x1430
 [ 4209.098364]  [<ffffffff8107c870>] ? autoremove_wake_function+0x0/0x40
 [ 4209.099121]  [<ffffffff8113ed90>] ? khugepaged+0x0/0x1430
 [ 4209.099780]  [<ffffffff8107c236>] ? kthread+0x96/0xa0
 [ 4209.100452]  [<ffffffff8100dda4>] ? kernel_thread_helper+0x4/0x10
 [ 4209.101214]  [<ffffffff8107c1a0>] ? kthread+0x0/0xa0
 [ 4209.101842]  [<ffffffff8100dda0>] ? kernel_thread_helper+0x0/0x10

Signed-off-by: KAMEZAWA Hiroyuki <>
Acked-by: Daisuke Nishimura <>
Reviewed-by: Johannes Weiner <>
Cc: Andrea Arcangeli <>
Reviewed-by: Minchan Kim <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
11 years agovmscan: fix zone shrinking exit when scan work is done
Johannes Weiner [Thu, 10 Feb 2011 23:01:34 +0000 (15:01 -0800)]
vmscan: fix zone shrinking exit when scan work is done

Commit 3e7d34497067 ("mm: vmscan: reclaim order-0 and use compaction
instead of lumpy reclaim") introduced an indefinite loop in

It meant to break out of this loop when no pages had been reclaimed and
not a single page was even scanned.  The way it would detect the latter
is by taking a snapshot of sc->nr_scanned at the beginning of the
function and comparing it against the new sc->nr_scanned after the scan
loop.  But it would re-iterate without updating that snapshot, looping
forever if sc->nr_scanned changed at least once since shrink_zone() was

This is not the sole condition that would exit that loop, but it
requires other processes to change the zone state, as the reclaimer that
is stuck obviously can not anymore.

This is only happening for higher-order allocations, where reclaim is
run back to back with compaction.

Signed-off-by: Johannes Weiner <>
Reported-by: Michal Hocko <>
Tested-by: Kent Overstreet<>
Reported-by: Kent Overstreet <>
Acked-by: Mel Gorman <>
Cc: Andrea Arcangeli <>
Cc: Rik van Riel <>
Reviewed-by: Minchan Kim <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
11 years agomlock: do not munlock pages in __do_fault()
Michel Lespinasse [Thu, 10 Feb 2011 23:01:33 +0000 (15:01 -0800)]
mlock: do not munlock pages in __do_fault()

If the page is going to be written to, __do_page needs to break COW.

However, the old page (before breaking COW) was never mapped mapped into
the current pte (__do_fault is only called when the pte is not present),
so vmscan can't have marked the old page as PageMlocked due to being
mapped in __do_fault's VMA.  Therefore, __do_fault() does not need to
worry about clearing PageMlocked() on the old page.

Signed-off-by: Michel Lespinasse <>
Reviewed-by: KAMEZAWA Hiroyuki <>
Acked-by: Hugh Dickins <>
Cc: Rik van Riel <>
Cc: Andrea Arcangeli <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
11 years agomlock: fix race when munlocking pages in do_wp_page()
Michel Lespinasse [Thu, 10 Feb 2011 23:01:32 +0000 (15:01 -0800)]
mlock: fix race when munlocking pages in do_wp_page()

vmscan can lazily find pages that are mapped within VM_LOCKED vmas, and
set the PageMlocked bit on these pages, transfering them onto the
unevictable list.  When do_wp_page() breaks COW within a VM_LOCKED vma,
it may need to clear PageMlocked on the old page and set it on the new
page instead.

This change fixes an issue where do_wp_page() was clearing PageMlocked
on the old page while the pte was still pointing to it (as well as
rmap).  Therefore, we were not protected against vmscan immediately
transfering the old page back onto the unevictable list.  This could
cause pages to get stranded there forever.

I propose to move the corresponding code to the end of do_wp_page(),
after the pte (and rmap) have been pointed to the new page.
Additionally, we can use munlock_vma_page() instead of
clear_page_mlock(), so that the old page stays mlocked if there are
still other VM_LOCKED vmas mapping it.

Signed-off-by: Michel Lespinasse <>
Reviewed-by: KAMEZAWA Hiroyuki <>
Acked-by: Hugh Dickins <>
Cc: Rik van Riel <>
Cc: Andrea Arcangeli <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
11 years agomemblock: don't adjust size in memblock_find_base()
Yinghai Lu [Thu, 10 Feb 2011 23:01:30 +0000 (15:01 -0800)]
memblock: don't adjust size in memblock_find_base()

While applying patch to use memblock to find aperture for 64bit x86.
Ingo found system with 1g + force_iommu

> No AGP bridge found
> Node 0: aperture @ 38000000 size 32 MB
> Aperture pointing to e820 RAM. Ignoring.
> Your BIOS doesn't leave a aperture memory hole
> Please enable the IOMMU option in the BIOS setup
> This costs you 64 MB of RAM
> Cannot allocate aperture memory hole (0,65536K)

the corresponding code:

addr = memblock_find_in_range(0, 1ULL<<32, aper_size, 512ULL<<20);
if (addr == MEMBLOCK_ERROR || addr + aper_size > 0xffffffff) {
"Cannot allocate aperture memory hole (%lx,%uK)\n",
addr, aper_size>>10);
return 0;
memblock_x86_reserve_range(addr, addr + aper_size, "aperture64")

fails because memblock core code align the size with 512M.  That could
make size way too big.

So don't align the size in that case.

actually __memblock_alloc_base, the another caller already align that
before calling that function.

BTW. x86 does not use __memblock_alloc_base...

Signed-off-by: Yinghai Lu <>
Cc: Ingo Molnar <>
Cc: David Miller <>
Cc: "H. Peter Anvin" <>
Cc: Benjamin Herrenschmidt <>
Cc: Dave Airlie <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
11 years agonbd: remove module-level ioctl mutex
Soren Hansen [Thu, 10 Feb 2011 23:01:28 +0000 (15:01 -0800)]
nbd: remove module-level ioctl mutex

Commit 2a48fc0ab242417 ("block: autoconvert trivial BKL users to private
mutex") replaced uses of the BKL in the nbd driver with mutex
operations.  Since then, I've been been seeing these lock ups:

 INFO: task qemu-nbd:16115 blocked for more than 120 seconds.
 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
 qemu-nbd      D 0000000000000001     0 16115  16114 0x00000004
  ffff88007d775d98 0000000000000082 ffff88007d775fd8 ffff88007d774000
  0000000000013a80 ffff8800020347e0 ffff88007d775fd8 0000000000013a80
  ffff880133730000 ffff880002034440 ffffea0004333db8 ffffffffa071c020
 Call Trace:
  [<ffffffff815b9997>] __mutex_lock_slowpath+0xf7/0x180
  [<ffffffff815b93eb>] mutex_lock+0x2b/0x50
  [<ffffffffa071a21c>] nbd_ioctl+0x6c/0x1c0 [nbd]
  [<ffffffff812cb970>] blkdev_ioctl+0x230/0x730
  [<ffffffff811967a1>] block_ioctl+0x41/0x50
  [<ffffffff81175c03>] do_vfs_ioctl+0x93/0x370
  [<ffffffff81175f61>] sys_ioctl+0x81/0xa0
  [<ffffffff8100c0c2>] system_call_fastpath+0x16/0x1b

Instrumenting the nbd module's ioctl handler with some extra logging
clearly shows the NBD_DO_IT ioctl being invoked which is a long-lived
ioctl in the sense that it doesn't return until another ioctl asks the
driver to disconnect.  However, that other ioctl blocks, waiting for the
module-level mutex that replaced the BKL, and then we're stuck.

This patch removes the module-level mutex altogether.  It's clearly
wrong, and as far as I can see, it's entirely unnecessary, since the nbd
driver maintains per-device mutexes, and I don't see anything that would
require a module-level (or kernel-level, for that matter) mutex.

Signed-off-by: Soren Hansen <>
Acked-by: Serge Hallyn <>
Acked-by: Paul Clements <>
Cc: Arnd Bergmann <>
Cc: Jens Axboe <>
Cc: <> [2.6.37.x]
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
11 years agodrivers/rtc/rtc-proc.c: add module_put on error path in rtc_proc_open()
Alexander Strakh [Thu, 10 Feb 2011 23:01:25 +0000 (15:01 -0800)]
drivers/rtc/rtc-proc.c: add module_put on error path in rtc_proc_open()

In file drivers/rtc/rtc-proc.c seq_open() can return -ENOMEM.

 86        if (!try_module_get(THIS_MODULE))
 87                return -ENODEV;
 89        return single_open(file, rtc_proc_show, rtc);

In this case before exiting (line 89) from rtc_proc_open the
module_put(THIS_MODULE) must be called.

Found by Linux Device Drivers Verification Project

Signed-off-by: Alexander Strakh <>
Cc: Alessandro Zummo <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
11 years agodrivers/gpio/pca953x.c: add a mutex to fix race condition
Roland Stigge [Thu, 10 Feb 2011 23:01:23 +0000 (15:01 -0800)]
drivers/gpio/pca953x.c: add a mutex to fix race condition

Add a mutex to register communication and handling.  Without the mutex,
GPIOs didn't switch as expected when toggled in a fast sequence of
status changes of multiple outputs.

Signed-off-by: Roland Stigge <>
Acked-by: Eric Miao <>
Cc: Grant Likely <>
Cc: Marc Zyngier <>
Cc: Ben Gardner <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
11 years agoptrace: use safer wake up on ptrace_detach()
Tejun Heo [Thu, 10 Feb 2011 23:01:22 +0000 (15:01 -0800)]
ptrace: use safer wake up on ptrace_detach()

The wake_up_process() call in ptrace_detach() is spurious and not
interlocked with the tracee state.  IOW, the tracee could be running or
sleeping in any place in the kernel by the time wake_up_process() is
called.  This can lead to the tracee waking up unexpectedly which can be

The wake_up is spurious and should be removed but for now reduce its
toxicity by only waking up if the tracee is in TRACED or STOPPED state.

This bug can possibly be used as an attack vector.  I don't think it
will take too much effort to come up with an attack which triggers oops
somewhere.  Most sleeps are wrapped in condition test loops and should
be safe but we have quite a number of places where sleep and wakeup
conditions are expected to be interlocked.  Although the window of
opportunity is tiny, ptrace can be used by non-privileged users and with
some loading the window can definitely be extended and exploited.

Signed-off-by: Tejun Heo <>
Acked-by: Roland McGrath <>
Acked-by: Oleg Nesterov <>
Cc: <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
11 years agovfs: call rcu_barrier after ->kill_sb()
Boaz Harrosh [Thu, 10 Feb 2011 23:01:20 +0000 (15:01 -0800)]
vfs: call rcu_barrier after ->kill_sb()

In commit fa0d7e3de6d6 ("fs: icache RCU free inodes"), we use rcu free
inode instead of freeing the inode directly.  It causes a crash when we
rmmod immediately after we umount the volume[1].

So we need to call rcu_barrier after we kill_sb so that the inode is
freed before we do rmmod.  The idea is inspired by Aneesh Kumar.
rcu_barrier will wait for all callbacks to end before preceding.  The
original patch was done by Tao Ma, but synchronize_rcu() is not enough


Tested-by: Tao Ma <>
Signed-off-by: Boaz Harrosh <>
Cc: Nick Piggin <>
Cc: Al Viro <>
Cc: Chris Mason <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
11 years agoFix possible filp_cachep memory corruption
Linus Torvalds [Fri, 11 Feb 2011 23:53:38 +0000 (15:53 -0800)]
Fix possible filp_cachep memory corruption

In commit 31e6b01f4183 ("fs: rcu-walk for path lookup") we started doing
path lookup using RCU, which then falls back to a careful non-RCU lookup
in case of problems (LOOKUP_REVAL).  So do_filp_open() has this "re-do
the lookup carefully" looping case.

However, that means that we must not release the open-intent file data
if we are going to loop around and use it once more!

Fix this by moving the release of the open-intent data to the function
that allocates it (do_filp_open() itself) rather than the helper
functions that can get called multiple times (finish_open() and
do_last()).  This makes the logic for the lifetime of that field much
more obvious, and avoids the possible double free.

Reported-by: J. R. Okajima <>
Acked-by: Al Viro <>
Cc: Nick Piggin <>
Cc: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
11 years agodlm: use single thread workqueues
David Teigland [Fri, 11 Feb 2011 22:44:31 +0000 (16:44 -0600)]
dlm: use single thread workqueues

The recent commit to use cmwq for send and recv threads
dcce240ead802d42b1e45ad2fcb2ed4a399cb255 introduced problems,
apparently due to multiple workqueue threads.  Single threads
make the problems go away, so return to that until we fully
understand the concurrency issues with multiple threads.

Signed-off-by: David Teigland <>
11 years agoMAINTAINERS: fix sorting
Harry Wei [Fri, 11 Feb 2011 15:52:20 +0000 (16:52 +0100)]
MAINTAINERS: fix sorting

Signed-off-by: Harry Wei <>
Signed-off-by: Jiri Kosina <>
11 years agoMAINTAINERS: add second list for IRDA
Wolfram Sang [Mon, 31 Jan 2011 21:21:46 +0000 (22:21 +0100)]
MAINTAINERS: add second list for IRDA

The irda-users-list is currently almost dead and subscribers-only. Adding
netdev increases the audience which might help to not overlook a bugreport

Signed-off-by: Wolfram Sang <>
Acked-by: Samuel Ortiz <>
Signed-off-by: Jiri Kosina <>
11 years agox86: Fix printk typo WARING
Paul Bolle [Tue, 8 Feb 2011 22:27:36 +0000 (23:27 +0100)]
x86: Fix printk typo WARING

Signed-off-by: Paul Bolle <>
Signed-off-by: Jiri Kosina <>
11 years agoDocumentation: default_message_level is a typo
Paul Bolle [Sun, 6 Feb 2011 20:00:41 +0000 (21:00 +0100)]
Documentation: default_message_level is a typo

It's default_message_loglevel, not default_message_level.

Signed-off-by: Paul Bolle <>
Signed-off-by: Jiri Kosina <>
11 years agoALSA: hda - add quirk for Ordissimo EVE using a realtek ALC662
Anisse Astier [Thu, 10 Feb 2011 12:14:44 +0000 (13:14 +0100)]
ALSA: hda - add quirk for Ordissimo EVE using a realtek ALC662

This netbook has a only one jack output and an internal mic.

By default, mic and jack sense aren't working. Using lenovo-101e
parameters makes both work.

The device seems based on a Sharetronic Q70, so this should fix audio for
this model too.

Signed-off-by: Anisse Astier <>
Signed-off-by: Takashi Iwai <>
11 years agopci: use security_capable() when checking capablities during config space read
Chris Wright [Thu, 10 Feb 2011 23:58:56 +0000 (15:58 -0800)]
pci: use security_capable() when checking capablities during config space read

Eric Paris noted that commit de139a3 ("pci: check caps from sysfs file
open to read device dependent config space") caused the capability check
to bypass security modules and potentially auditing.  Rectify this by
calling security_capable() when checking the open file's capabilities
for config space reads.

Reported-by: Eric Paris <>
Signed-off-by: Chris Wright <>
Signed-off-by: James Morris <>
11 years agosecurity: add cred argument to security_capable()
Chris Wright [Thu, 10 Feb 2011 06:11:51 +0000 (22:11 -0800)]
security: add cred argument to security_capable()

Expand security_capable() to include cred, so that it can be usable in a
wider range of call sites.

Signed-off-by: Chris Wright <>
Acked-by: Serge Hallyn <>
Signed-off-by: James Morris <>
11 years agoMerge branch 'for-james' of git:// into...
James Morris [Fri, 11 Feb 2011 06:34:47 +0000 (17:34 +1100)]
Merge branch 'for-james' of git:// into for-linus

11 years agocifs: don't always drop malformed replies on the floor (try #3)
Jeff Layton [Thu, 10 Feb 2011 13:03:50 +0000 (08:03 -0500)]
cifs: don't always drop malformed replies on the floor (try #3)

Slight revision to this patch...use min_t() instead of conditional
assignment. Also, remove the FIXME comment and replace it with the
explanation that Steve gave earlier.

After receiving a packet, we currently check the header. If it's no
good, then we toss it out and continue the loop, leaving the caller
waiting on that response.

In cases where the packet has length inconsistencies, but the MID is
valid, this leads to unneeded delays. That's especially problematic now
that the client waits indefinitely for responses.

Instead, don't immediately discard the packet if checkSMB fails. Try to
find a matching mid_q_entry, mark it as having a malformed response and
issue the callback.

Signed-off-by: Jeff Layton <>
Signed-off-by: Steve French <>
11 years agotpm_tis: Use timeouts returned from TPM
Stefan Berger [Tue, 11 Jan 2011 19:37:29 +0000 (14:37 -0500)]
tpm_tis: Use timeouts returned from TPM

The current TPM TIS driver in git discards the timeout values returned
from the TPM. The check of the response packet needs to consider that
the return_code field is 0 on success and the size of the expected
packet is equivalent to the header size + u32 length indicator for the
TPM_GetCapability() result + 3 timeout indicators of type u32.

I am also adding a sysfs entry 'timeouts' showing the timeouts that are
being used.

Signed-off-by: Stefan Berger <>
Tested-by: Guillaume Chazarain <>
Signed-off-by: Rajiv Andrade <>
11 years agochar/ipmi: fix OOPS caused by pnp_unregister_driver on unregistered driver
Corey Minyard [Thu, 10 Feb 2011 22:08:38 +0000 (16:08 -0600)]
char/ipmi: fix OOPS caused by pnp_unregister_driver on unregistered driver

This patch fixes an OOPS triggered when calling modprobe ipmi_si a
second time after the first modprobe returned without finding any ipmi
devices.  This can happen if you reload the module after having the
first module load fail.  The driver was not deregistering from PNP in
that case.

Peter Huewe originally reported this patch and supplied a fix, I have a
different patch based on Linus' suggestion that cleans things up a bit

Reviewed-by: Peter Huewe <>
Cc: Randy Dunlap <>
Signed-off-by: Corey Minyard <>
Signed-off-by: Linus Torvalds <>
11 years agocap_syslog: accept CAP_SYS_ADMIN for now
Linus Torvalds [Fri, 11 Feb 2011 01:53:55 +0000 (17:53 -0800)]
cap_syslog: accept CAP_SYS_ADMIN for now

In commit ce6ada35bdf7 ("security: Define CAP_SYSLOG") Serge Hallyn
introduced CAP_SYSLOG, but broke backwards compatibility by no longer
accepting CAP_SYS_ADMIN as an override (it would cause a warning and
then reject the operation).

Re-instate CAP_SYS_ADMIN - but keeping the warning - as an acceptable
capability until any legacy applications have been updated.  There are
apparently applications out there that drop all capabilities except for
CAP_SYS_ADMIN in order to access the syslog.

(This is a re-implementation of a patch by Serge, cleaning the logic up
and making the code more readable)

Acked-by: Serge Hallyn <>
Reviewed-by: James Morris <>
Signed-off-by: Linus Torvalds <>
11 years agoARM: SAMSUNG: Ensure struct sys_device is declared in plat/pm.h
Mark Brown [Mon, 7 Feb 2011 01:51:04 +0000 (10:51 +0900)]
ARM: SAMSUNG: Ensure struct sys_device is declared in plat/pm.h

Previously we were relying on it being pulled in by other headers for
the prototype of s3c24xx_irq_suspend() and s3c24xx_irq_resume().

Signed-off-by: Mark Brown <>
Signed-off-by: Kukjin Kim <>
11 years agoARM: S5PV310: Cleanup System MMU
Kukjin Kim [Tue, 1 Feb 2011 06:08:53 +0000 (15:08 +0900)]
ARM: S5PV310: Cleanup System MMU

This patch cleans following up.
- Moved definition of System MMU IPNUM into mach/sysmmu.h
- Removed useless SYSMMU_DEBUG configuration
- Removed useless header file plat/sysmmu.h

Signed-off-by: Kukjin Kim <>
11 years agoARM: S5PV310: Add support System MMU on SMDKV310
Thomas Abraham [Mon, 24 Jan 2011 23:37:49 +0000 (08:37 +0900)]
ARM: S5PV310: Add support System MMU on SMDKV310

The 's5pv310_device_sysmmu' is used on SMDKV310. But since it is not
compiled now, there is a build error. To fix this compilation error,
S5PV310_DEV_SYSMMU needs to be selected for SMDKV310 board.
This patch enables System MMU support on SMDKV310.

Signed-off-by: Thomas Abraham <>
[ Adding description]
Signed-off-by: Kukjin Kim <>
11 years agoMerge branch 'usb-linus' of git://
Linus Torvalds [Thu, 10 Feb 2011 20:20:40 +0000 (12:20 -0800)]
Merge branch 'usb-linus' of git://git./linux/kernel/git/gregkh/usb-2.6

* 'usb-linus' of git:// (21 commits)
  USB: cdc-acm: Adding second ACM channel support for Nokia N8
  USB, Mass Storage, composite, gadget: Fix build failure and memset of a struct
  USB: Fix trout build failure with ci13xxx_msm gadget
  USB: EHCI: fix scheduling while atomic during suspend
  USB: usb-storage: unusual_devs entry for Coby MP3 player
  USB: ftdi_sio: Add VID=0x0647, PID=0x0100 for Acton Research spectrograph
  USB: fix race between root-hub resume and wakeup requests
  USB: prevent buggy hubs from crashing the USB stack
  usb: r8a66597-udc: Fixed bufnum of Bulk
  USB: ftdi_sio: add ST Micro Connect Lite uart support
  USB: Storage: Add unusual_devs entry for VTech Kidizoom
  USB SL811HS HCD: Fix memory leak in sl811h_urb_enqueue()
  USB: ti_usb: fix module removal
  USB: io_edgeport: fix the reported firmware major and minor
  usb: ehci-omap: Show fatal probing time errors to end user
  usb: musb: introduce api for dma code to check compatibility with usb request
  usb: musb: maintain three states for buffer mappings instead of two
  usb: musb: disable double buffering when it's broken
  usb: musb: hsdma: change back to use musb_read/writew
  usb: musb: core: fix IRQ check

11 years agoMerge branch 'tty-linus' of git://
Linus Torvalds [Thu, 10 Feb 2011 20:19:58 +0000 (12:19 -0800)]
Merge branch 'tty-linus' of git://git./linux/kernel/git/gregkh/tty-2.6

* 'tty-linus' of git://
  serial: bfin_5xx: split uart RX lock from uart port lock to avoid deadlock
  68360serial: Plumb in rs_360_get_icount()
  n_gsm: copy mtu over when configuring via ioctl interface
  virtio: console: Move file back to drivers/char/

11 years agoMerge branch 'staging-linus' of git://
Linus Torvalds [Thu, 10 Feb 2011 20:19:23 +0000 (12:19 -0800)]
Merge branch 'staging-linus' of git://git./linux/kernel/git/gregkh/staging-2.6

* 'staging-linus' of git://
  staging: zram: fix data corruption issue
  Staging: Comedi: Fix a few NI module dependencies
  Staging: comedi: Add MODULE_LICENSE and similar to NI modules
  staging: brcm80211: bugfix for softmac crash on multi cpu configurations
  staging: sst: Fix for dmic capture on v2 pmic
  staging: hv: Enable sending GARP packet after live migration

11 years agoMerge git://
Linus Torvalds [Thu, 10 Feb 2011 20:05:09 +0000 (12:05 -0800)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git:// (34 commits)
  virtio_net: Add schedule check to napi_enable call
  x25: Do not reference freed memory.
  pch_can: fix tseg1/tseg2 setting issue
  isdn: hysdn: Kill (partially buggy) CVS regision log reporting.
  can: softing_cs needs slab.h
  pch_gbe: Fix the issue which a driver locks when rx offload is set by ethtool
  netfilter: nf_conntrack: set conntrack templates again if we return NF_REPEAT
  pch_can: fix module reload issue with MSI
  pch_can: fix rmmod issue
  pch_can: fix 800k comms issue
  net: Fix lockdep regression caused by initializing netdev queues too early.
  net/caif: Fix dangling list pointer in freed object on error.
  USB CDC NCM errata updates for cdc_ncm host driver
  CDC NCM errata updates for cdc.h
  ixgbe: update version string
  ixgbe: cleanup variable initialization
  ixgbe: limit VF access to network traffic
  ixgbe: fix for 82599 erratum on Header Splitting
  ixgbe: fix variable set but not used warnings by gcc 4.6
  e1000: add support for Marvell Alaska M88E1118R PHY

11 years agovirtio_net: Add schedule check to napi_enable call
Bruce Rogers [Thu, 10 Feb 2011 19:03:31 +0000 (11:03 -0800)]
virtio_net: Add schedule check to napi_enable call

Under harsh testing conditions, including low memory, the guest would
stop receiving packets. With this patch applied we no longer see any
problems in the driver while performing these tests for extended periods
of time.

Make sure napi is scheduled subsequent to each napi_enable.

Signed-off-by: Bruce Rogers <>
Signed-off-by: Olaf Kirch <>
Signed-off-by: Rusty Russell <>
Signed-off-by: David S. Miller <>
11 years agofix jiffy calculations in calibrate_delay_direct to handle overflow
Tim Deegan [Thu, 10 Feb 2011 08:50:41 +0000 (08:50 +0000)]
fix jiffy calculations in calibrate_delay_direct to handle overflow

Fixes a hang when booting as dom0 under Xen, when jiffies can be
quite large by the time the kernel init gets this far.

Signed-off-by: Tim Deegan <>
[ !time_after() -> time_before_eq() as suggested by Jiri Slaby]
Signed-off-by: Jan Beulich <>
Cc: Jiri Slaby <>
Cc: Jeremy Fitzhardinge <>
Signed-off-by: Linus Torvalds <>
11 years agoALSA: hrtimer: remove superfluous tasklet invocation
Clemens Ladisch [Thu, 10 Feb 2011 15:16:32 +0000 (16:16 +0100)]
ALSA: hrtimer: remove superfluous tasklet invocation

Commit bb758e9637e5ddc removed snd_hrtimer_callback() from the hardware
interrupt handler, thus moving it into a tasklet, but did not tell the
ALSA timer framework about this, so the timer handling would now be done
in the ALSA timer tasklet scheduled from another tasklet.

To fix this, add the flag to tell the ALSA timer framework that the
timer handler is already being invoked in a tasklet.

Signed-off-by: Clemens Ladisch <>
Signed-off-by: Takashi Iwai <>
11 years agoALSA: hrtimer: handle delayed timer interrupts
Clemens Ladisch [Thu, 10 Feb 2011 15:15:44 +0000 (16:15 +0100)]
ALSA: hrtimer: handle delayed timer interrupts

If a timer interrupt was delayed too much, hrtimer_forward_now() will
forward the timer expiry more than once.  When this happens, the
additional number of elapsed ALSA timer ticks must be passed to
snd_timer_interrupt() to prevent the ALSA timer from falling behind.

This mostly fixes MIDI slowdown problems on highly-loaded systems with
badly behaved interrupt handlers.

Signed-off-by: Clemens Ladisch <>
Reported-and-tested-by: Arthur Marsh <>
Cc: <>
Signed-off-by: Takashi Iwai <>
11 years agoALSA: HDA: Add subwoofer quirk for Acer Aspire 8942G
David Henningsson [Thu, 10 Feb 2011 14:39:19 +0000 (15:39 +0100)]
ALSA: HDA: Add subwoofer quirk for Acer Aspire 8942G

According to the reporter, node 0x15 needs to be muted for subwoofer
to stop sounding. This pin is marked as unused by BIOS, so fix that.

Cc: (2.6.37+)
Reported-by: Hans Peter
Signed-off-by: David Henningsson <>
Signed-off-by: Takashi Iwai <>
11 years agoALSA: hda - Don't handle empty patch files
Takashi Iwai [Thu, 10 Feb 2011 16:39:20 +0000 (17:39 +0100)]
ALSA: hda - Don't handle empty patch files

When an empty string is passed to patch option, the driver should
ignore it.  Otherwise it gets an error by trying to load it.

Signed-off-by: Takashi Iwai <>
11 years agoamd64_edac: Fix DIMMs per DCTs output
Borislav Petkov [Thu, 3 Feb 2011 14:59:57 +0000 (15:59 +0100)]
amd64_edac: Fix DIMMs per DCTs output

amd64_debug_display_dimm_sizes() reports the distribution of the DIMMs
on each DRAM controller and its chip select sizes. Thus, the last don't
have anything to do with whether we're running in ganged DCT mode or not
- their sizes don't change all of a sudden. Fix that by removing the
ganged-check and dump DCT0's config for DCT1 when in ganged mode since
they're identical.

Reported-and-tested-by: Markus Trippelsdorf <>
Signed-off-by: Borislav Petkov <>
11 years agox25: Do not reference freed memory.
David S. Miller [Thu, 10 Feb 2011 05:48:36 +0000 (21:48 -0800)]
x25: Do not reference freed memory.

In x25_link_free(), we destroy 'nb' before dereferencing
'nb->dev'.  Don't do this, because 'nb' might be freed
by then.

Reported-by: Randy Dunlap <>
Tested-by: Randy Dunlap <>
Signed-off-by: David S. Miller <>
11 years agocifs: clean up checks in cifs_echo_request
Jeff Layton [Wed, 9 Feb 2011 17:01:42 +0000 (12:01 -0500)]
cifs: clean up checks in cifs_echo_request

Follow-on patch to 7e90d705 which is already in Steve's tree...

The check for tcpStatus == CifsGood is not meaningful since it doesn't
indicate whether the NEGOTIATE request has been done. Also, clarify
why we're checking for maxBuf == 0.

Signed-off-by: Jeff Layton <>
Signed-off-by: Steve French <>
11 years agoMerge branch 'rc-fixes' of git://
Linus Torvalds [Thu, 10 Feb 2011 00:56:33 +0000 (16:56 -0800)]
Merge branch 'rc-fixes' of git://git./linux/kernel/git/mmarek/kbuild-2.6

* 'rc-fixes' of git://
  deb-pkg: Fix building outside of source tree (O=...).
  deb-pkg: Use $SRCARCH for include path

11 years agopch_can: fix tseg1/tseg2 setting issue
Tomoya MORINAGA [Thu, 10 Feb 2011 00:46:21 +0000 (16:46 -0800)]
pch_can: fix tseg1/tseg2 setting issue

Previous patch "[PATCH 1/3] pch_can: fix 800k comms issue" is wrong.
I should have modified tseg1_min not tseg2_min.
This patch reverts tseg2_min to 1 and set tseg1_min to 2.

Signed-off-by: Tomoya MORINAGA <>
Signed-off-by: David S. Miller <>
11 years agoisdn: hysdn: Kill (partially buggy) CVS regision log reporting.
David S. Miller [Wed, 9 Feb 2011 21:54:26 +0000 (13:54 -0800)]
isdn: hysdn: Kill (partially buggy) CVS regision log reporting.

Some cases try to modify const strings, and in any event the
CVS revision strings have not changed in over ten years making
these printouts completely worthless.

Just kill all of this stuff off.

Reported-by: Randy Dunlap <>
Signed-off-by: David S. Miller <>
11 years agohwmon: (emc1403) Fix I2C address range
Guenter Roeck [Wed, 9 Feb 2011 19:51:29 +0000 (11:51 -0800)]
hwmon: (emc1403) Fix I2C address range

I2C address range included 0x2a, which the chips do not support.
Replace with 0x29 which is supported but was missing.

Signed-off-by: Guenter Roeck <>
Acked-by: Jean Delvare <>
11 years agohwmon: (lm63) Consider LM64 temperature offset
Dirk Eibach [Wed, 9 Feb 2011 09:51:34 +0000 (04:51 -0500)]
hwmon: (lm63) Consider LM64 temperature offset

LM64 has 16 degrees Celsius temperature offset on all
remote sensor registers.
This was not considered When LM64 support was added to lm63.c.

Signed-off-by: Dirk Eibach <>
Signed-off-by: Guenter Roeck <>
11 years agocan: softing_cs needs slab.h
Randy Dunlap [Wed, 9 Feb 2011 20:43:38 +0000 (12:43 -0800)]
can: softing_cs needs slab.h

From: Randy Dunlap <>

softing_cs.c uses kzalloc & kfree, so it needs to include linux/slab.h.

drivers/net/can/softing/softing_cs.c:234: error: implicit declaration of function 'kfree'
drivers/net/can/softing/softing_cs.c:271: error: implicit declaration of function 'kzalloc'

Signed-off-by: Randy Dunlap <>
Signed-off-by: David S. Miller <>
11 years agoMerge branch 'master' of git://
David S. Miller [Wed, 9 Feb 2011 20:40:21 +0000 (12:40 -0800)]
Merge branch 'master' of git://git./linux/kernel/git/kaber/nf-2.6

11 years agopch_gbe: Fix the issue which a driver locks when rx offload is set by ethtool
Toshiharu Okada [Wed, 9 Feb 2011 20:28:06 +0000 (12:28 -0800)]
pch_gbe: Fix the issue which a driver locks when rx offload is set by ethtool

This driver will be in a deadlock, When the rx offload is set by ethtool.
The pch_gbe_reinit_locked function was modified.

Signed-off-by: Toshiharu Okada <>
Signed-off-by: David S. Miller <>
11 years agoMerge git://
Linus Torvalds [Wed, 9 Feb 2011 19:51:40 +0000 (11:51 -0800)]
Merge git://git./linux/kernel/git/rusty/linux-2.6-for-linus

* git://
  virtio: console: Update Copyright
  virtio: console: Wake up outvq on host notifications

11 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Wed, 9 Feb 2011 19:45:21 +0000 (11:45 -0800)]
Merge branch 'for-linus' of git://

* 'for-linus' of git://
  cdrom: support devices that have check_events but not media_changed
  cfq-iosched: Don't wait if queue already has requests.
  blkio-throttle: Avoid calling blkiocg_lookup_group() for root group
  cfq: rename a function to give it more appropriate name
  cciss: make cciss_revalidate not loop through CISS_MAX_LUNS volumes unnecessarily.
  drivers/block/aoe/Makefile: replace the use of <module>-objs with <module>-y
  loop: queue_lock NULL pointer derefence in blk_throtl_exit
  drivers/block/Makefile: replace the use of <module>-objs with <module>-y
  blktrace: Don't output messages if NOTIFY isn't set.

11 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Wed, 9 Feb 2011 19:44:55 +0000 (11:44 -0800)]
Merge branch 'for-linus' of git://

* 'for-linus' of git://
  FIX: md: process hangs at wait_barrier after 0->10 takeover
  md_make_request: don't touch the bio after calling make_request
  md: Don't allow slot_store while resync/recovery is happening.
  md: don't clear curr_resync_completed at end of resync.
  md: Don't use remove_and_add_spares to remove failed devices from a read-only array
  Add raid1->raid0 takeover support
  md: Remove the AllReserved flag for component devices.
  md: don't abort checking spares as soon as one cannot be added.
  md: fix the test for finding spares in raid5_start_reshape.
  md: simplify some 'if' conditionals in raid5_start_reshape.
  md: revert change to raid_disks on failure.

11 years agostaging: zram: fix data corruption issue
Nitin Gupta [Sun, 6 Feb 2011 01:34:20 +0000 (20:34 -0500)]
staging: zram: fix data corruption issue

In zram_read() and zram_write() we were not incrementing the
index number and thus were reading/writing values from/to
incorrect sectors on zram disk, resulting in data corruption.

Signed-off-by: Nitin Gupta <>
Cc: stable <>
Signed-off-by: Greg Kroah-Hartman <>
11 years agoStaging: Comedi: Fix a few NI module dependencies
Ian Abbott [Tue, 8 Feb 2011 15:26:33 +0000 (15:26 +0000)]
Staging: Comedi: Fix a few NI module dependencies

The ni_tio and ni_tio modules do not depend on the 8255 module, but the
ni_atmio, ni_mio_cs and ni_pcimio modules do need the 8255 module.  The
ni_pcimio module also needs the comedi_fc module.

Signed-off-by: Ian Abbott <>
Signed-off-by: Greg Kroah-Hartman <>
11 years agoStaging: comedi: Add MODULE_LICENSE and similar to NI modules
Ian Abbott [Mon, 7 Feb 2011 13:39:52 +0000 (13:39 +0000)]
Staging: comedi: Add MODULE_LICENSE and similar to NI modules

As mentioned by W. Trevor King on the list
on "Thu, 27 Jan 2011 18:52:15 -0500", "Message-ID:
<>", the ni_pcimio module
is missing module metadata, including a license.

This patch adds module metadata to all the NI comedi driver modules.  It
also removes a duplicate MODULE_LICENSE("GPL") line from the "mite"

Signed-off-by: Ian Abbott <>
Cc: W. Trevor King <>
Signed-off-by: Greg Kroah-Hartman <>
11 years agoKVM: SVM: Make sure KERNEL_GS_BASE is valid when loading gs_index
Joerg Roedel [Fri, 14 Jan 2011 15:45:01 +0000 (16:45 +0100)]
KVM: SVM: Make sure KERNEL_GS_BASE is valid when loading gs_index

The gs_index loading code uses the swapgs instruction to
switch to the user gs_base temporarily. This is unsave in an
lightweight exit-path in KVM on AMD because the
KERNEL_GS_BASE MSR is switches lazily. An NMI happening in
the critical path of load_gs_index may use the wrong GS_BASE
value then leading to unpredictable behavior, e.g. a

This patch fixes the issue by making sure that load_gs_index
is called only with a valid KERNEL_GS_BASE value loaded in

Signed-off-by: Joerg Roedel <>
Signed-off-by: Avi Kivity <>
11 years agocdrom: support devices that have check_events but not media_changed
Simon Arlott [Wed, 9 Feb 2011 13:21:07 +0000 (14:21 +0100)]
cdrom: support devices that have check_events but not media_changed

Commit 93aae17af1172c40c6f74b7294e93a90c3cfaa5d ("sr: implement
sr_check_events()") replaced the media_changed op with the
check_events op in drivers/scsi/sr.c

All users that check for the CDC_MEDIA_CHANGED capbility try both
the check_events op and the media_changed op, but register_cdrom()
was requiring media_changed.

This patch fixes the capability checking.

The cdrom_select_disc ioctl is also using the two operations, so
they should be required for CDC_SELECT_DISC too.

Signed-off-by: Simon Arlott <>
Cc: Tejun Heo <>
Cc: Kay Sievers <>
Tested-by: Chris Clayton <>
Signed-off-by: Jens Axboe <>
11 years agocfq-iosched: Don't wait if queue already has requests.
Justin TerAvest [Wed, 9 Feb 2011 13:20:03 +0000 (14:20 +0100)]
cfq-iosched: Don't wait if queue already has requests.

Commit 7667aa0630407bc07dc38dcc79d29cc0a65553c1 added logic to wait for
the last queue of the group to become busy (have at least one request),
so that the group does not lose out for not being continuously
backlogged. The commit did not check for the condition that the last
queue already has some requests. As a result, if the queue already has
requests, wait_busy is set. Later on, cfq_select_queue() checks the
flag, and decides that since the queue has a request now and wait_busy
is set, the queue is expired.  This results in early expiration of the

This patch fixes the problem by adding a check to see if queue already
has requests. If it does, wait_busy is not set. As a result, time slices
do not expire early.

The queues with more than one request are usually buffered writers.
Testing shows improvement in isolation between buffered writers.

Signed-off-by: Justin TerAvest <>
Reviewed-by: Gui Jianfeng <>
Acked-by: Vivek Goyal <>
Signed-off-by: Jens Axboe <>
11 years agonetfilter: nf_conntrack: set conntrack templates again if we return NF_REPEAT
Pablo Neira Ayuso [Wed, 9 Feb 2011 07:08:20 +0000 (08:08 +0100)]
netfilter: nf_conntrack: set conntrack templates again if we return NF_REPEAT

The TCP tracking code has a special case that allows to return
NF_REPEAT if we receive a new SYN packet while in TIME_WAIT state.

In this situation, the TCP tracking code destroys the existing
conntrack to start a new clean session.

[DESTROY] tcp      6 src= dst= sport=38925 dport=8000 src= dst= sport=8000 dport=38925 [ASSURED]
    [NEW] tcp      6 120 SYN_SENT src= dst= sport=38925 dport=8000 [UNREPLIED] src= dst= sport=8000 dport=38925

However, this is a problem for the iptables' CT target event filtering
which will not work in this case since the conntrack template will not
be there for the new session. To fix this, we reassign the conntrack
template to the packet if we return NF_REPEAT.

Signed-off-by: Pablo Neira Ayuso <>
Signed-off-by: Patrick McHardy <>
11 years agopch_can: fix module reload issue with MSI
Tomoya [Mon, 7 Feb 2011 23:29:03 +0000 (23:29 +0000)]
pch_can: fix module reload issue with MSI

Currently, in case reload pch_can,
pch_can not to be able to catch interrupt.

The cause is bus-master is not set in pch_can.
Thus, add enabling bus-master processing.

Signed-off-by: Tomoya MORINAGA <>
Signed-off-by: David S. Miller <>
11 years agopch_can: fix rmmod issue
Tomoya [Mon, 7 Feb 2011 23:29:02 +0000 (23:29 +0000)]
pch_can: fix rmmod issue

Currently, when rmmod pch_can, kernel failure occurs.
The cause is pci_iounmap executed before pch_can_reset.
Thus pci_iounmap moves after pch_can_reset.

Signed-off-by: Tomoya MORINAGA <>
Signed-off-by: David S. Miller <>
11 years agopch_can: fix 800k comms issue
Tomoya [Mon, 7 Feb 2011 23:29:01 +0000 (23:29 +0000)]
pch_can: fix 800k comms issue

Currently, 800k comms fails since prop_seg set zero.
(EG20T PCH CAN register of prop_seg must be set more than 1)
To prevent prop_seg set to zero, change tseg2_min 1 to 2.

Signed-off-by: Tomoya MORINAGA <>
Signed-off-by: David S. Miller <>
11 years ago[CIFS] Do not send SMBEcho requests on new sockets until SMBNegotiate
Steve French [Tue, 8 Feb 2011 23:52:32 +0000 (23:52 +0000)]
[CIFS] Do not send SMBEcho requests on new sockets until SMBNegotiate

In order to determine whether an SMBEcho request can be sent
we need to know that the socket is established (server tcpStatus == CifsGood)
AND that an SMB NegotiateProtocol has been sent (server maxBuf != 0).
Without the second check we can send an Echo request during reconnection
before the server can accept it.

CC: JG <>
Reviewed-by: Jeff Layton <>
Signed-off-by: Steve French <>
11 years agonet: Fix lockdep regression caused by initializing netdev queues too early.
David S. Miller [Tue, 8 Feb 2011 23:02:50 +0000 (15:02 -0800)]
net: Fix lockdep regression caused by initializing netdev queues too early.

In commit aa9421041128abb4d269ee1dc502ff65fb3b7d69 ("net: init ingress
queue") we moved the allocation and lock initialization of the queues
into alloc_netdev_mq() since register_netdevice() is way too late.

The problem is that dev->type is not setup until the setup()
callback is invoked by alloc_netdev_mq(), and the dev->type is
what determines the lockdep class to use for the locks in the

Fix this by doing the queue allocation after the setup() callback

This is safe because the setup() callback is not allowed to make any
state changes that need to be undone on error (memory allocations,
etc.).  It may, however, make state changes that are undone by
free_netdev() (such as netif_napi_add(), which is done by the
ipoib driver's setup routine).

The previous code also leaked a reference to the &init_net namespace
object on RX/TX queue allocation failures.

Signed-off-by: David S. Miller <>
11 years agonet/caif: Fix dangling list pointer in freed object on error.
David S. Miller [Tue, 8 Feb 2011 22:31:31 +0000 (14:31 -0800)]
net/caif: Fix dangling list pointer in freed object on error.

rtnl_link_ops->setup(), and the "setup" callback passed to alloc_netdev*(),
cannot make state changes which need to be undone on failure.  There is
no cleanup mechanism available at this point.

So we have to add the caif private instance to the global list once we
are sure that register_netdev() has succedded in ->newlink().

Otherwise, if register_netdev() fails, the caller will invoke free_netdev()
and we will have a reference to freed up memory on the chnl_net_list.

Signed-off-by: David S. Miller <>
11 years agoUSB CDC NCM errata updates for cdc_ncm host driver
Alexey Orishko [Mon, 7 Feb 2011 09:45:10 +0000 (09:45 +0000)]
USB CDC NCM errata updates for cdc_ncm host driver

Specification links:
- CDC NCM errata link:
- CDC and WMC errata link:

- driver updated to match cdc.h header with errata changes
- added support for USB_CDC_SET_NTB_INPUT_SIZE control request with
  8 byte length
- fixes to comply with specification: send only control requests supported by
  device, set number of datagrams for IN direction, connection speed structure
  update, etc.
- packet loss fixed for tx direction; misleading flag renamed.
- adjusted hard_mtu value.

Signed-off-by: Alexey Orishko <>
Signed-off-by: David S. Miller <>
11 years agoCDC NCM errata updates for cdc.h
Alexey Orishko [Mon, 7 Feb 2011 09:45:09 +0000 (09:45 +0000)]
CDC NCM errata updates for cdc.h

Changes are based on the following documents:
- CDC NCM errata:
- CDC and WMC errata link:

Signed-off-by: Alexey Orishko <>
Acked-by: Greg Kroah-Hartman <>
Signed-off-by: David S. Miller <>
11 years agovirtio: console: Update Copyright
Amit Shah [Mon, 31 Jan 2011 07:36:37 +0000 (13:06 +0530)]
virtio: console: Update Copyright

Signed-off-by: Amit Shah <>
Signed-off-by: Rusty Russell <>
11 years agovirtio: console: Wake up outvq on host notifications
Amit Shah [Mon, 31 Jan 2011 07:36:36 +0000 (13:06 +0530)]
virtio: console: Wake up outvq on host notifications

The outvq needs to be woken up on host notifications so that buffers
consumed by the host can be reclaimed, outvq freed, and application
writes may proceed again.

The need for this is now finally noticed when I have qemu patches ready
to use nonblocking IO and flow control.

CC: Hans de Goede <>
Signed-off-by: Amit Shah <>
Signed-off-by: Rusty Russell <>
Acked-by: Hans de Goede <>
11 years agoMerge branch 'master' of
David S. Miller [Tue, 8 Feb 2011 20:16:52 +0000 (12:16 -0800)]
Merge branch 'master' of /linux/kernel/git/jkirsher/net-2.6

11 years agoMerge branch 'master' of git://
David S. Miller [Tue, 8 Feb 2011 20:03:54 +0000 (12:03 -0800)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6

11 years agoALSA: hda - Fix missing CA initialization for HDMI/DP
Takashi Iwai [Tue, 8 Feb 2011 16:25:49 +0000 (17:25 +0100)]
ALSA: hda - Fix missing CA initialization for HDMI/DP

The commit 53d7d69d8ffdfa60c5b66cc2e9ee0774aaaef5c0
    ALSA: hdmi - support infoframe for DisplayPort
dropped the initialization of CA field accidentally.
This resulted in only two-channel LPCM mode on Nvidia machines.

Reference: kernel bug 28592

Signed-off-by: Takashi Iwai <>
Cc: <>
11 years agoixgbe: update version string
Don Skidmore [Wed, 26 Jan 2011 06:04:37 +0000 (06:04 +0000)]
ixgbe: update version string

This will synchronize the version string with that of the latest source
forge driver which shares its functionality.

Signed-off-by: Don Skidmore <>
Signed-off-by: Jeff Kirsher <>
11 years agoixgbe: cleanup variable initialization
Don Skidmore [Wed, 26 Jan 2011 06:04:17 +0000 (06:04 +0000)]
ixgbe: cleanup variable initialization

The ixgbe_fcoe_ddp_get function wasn't initializing one of its variables
and this was producing compiler warnings.  This patch cleans that up.

Signed-off-by: Don Skidmore <>
Tested-by: Stephen Ko <>
Signed-off-by: Jeff Kirsher <>
11 years agoixgbe: limit VF access to network traffic
Alexander Duyck [Wed, 19 Jan 2011 18:33:05 +0000 (18:33 +0000)]
ixgbe: limit VF access to network traffic

This change fixes VM pool allocation issues based on MAC address filtering,
as well as limits the scope of VF access to promiscuous mode.

Signed-off-by: Alexander Duyck <>
Acked-by: Greg Rose <>
Signed-off-by: Jeff Kirsher <>
11 years agoixgbe: fix for 82599 erratum on Header Splitting
Don Skidmore [Tue, 18 Jan 2011 22:53:47 +0000 (22:53 +0000)]
ixgbe: fix for 82599 erratum on Header Splitting

We have found a hardware erratum on 82599 hardware that can lead to
unpredictable behavior when Header Splitting mode is enabled.  So
we are no longer enabling this feature on affected hardware.

Please see the 82599 Specification Update for more information.

Signed-off-by: Don Skidmore <>
Tested-by: Stephen Ko <>
Signed-off-by: Jeff Kirsher <>
11 years agoixgbe: fix variable set but not used warnings by gcc 4.6
Emil Tantilov [Wed, 5 Jan 2011 07:09:41 +0000 (07:09 +0000)]
ixgbe: fix variable set but not used warnings by gcc 4.6

Caught with gcc 4.6 -Wunused-but-set-variable

Remove unused napi_vectors variable.

Fix the use of reset_bit in ixgbe_reset_hw_X540()

Signed-off-by: Emil Tantilov <>
Tested-by: Stephen Ko <>
Signed-off-by: Jeff Kirsher <>
11 years agoe1000: add support for Marvell Alaska M88E1118R PHY
Florian Fainelli [Mon, 24 Jan 2011 14:48:03 +0000 (14:48 +0000)]
e1000: add support for Marvell Alaska M88E1118R PHY

This patch adds support for Marvell Alask M88E188R PHY chips. Support for
other M88* PHYs is already there, so there is nothing more to add than its
PHY id.

CC: Dirk Brandewie <>
Signed-off-by: Florian Fainelli <>
Acked-by: Jesse Brandeburg <>
Signed-off-by: Jeff Kirsher <>