firefly-linux-kernel-4.4.55.git
14 years agor8169: clean up my printk uglyness
Neil Horman [Thu, 1 Apr 2010 07:30:07 +0000 (07:30 +0000)]
r8169: clean up my printk uglyness

commit 93f4d91d879acfcb0ba9c2725e3133fcff2dfd1e upstream.

Fix formatting on r8169 printk

Brandon Philips noted that I had a spacing issue in my printk for the
last r8169 patch that made it quite ugly.  Fix that up and add the PFX
macro to it as well so it looks like the other r8169 printks

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86/gart: Disable GART explicitly before initialization
Joerg Roedel [Wed, 7 Apr 2010 10:57:35 +0000 (12:57 +0200)]
x86/gart: Disable GART explicitly before initialization

commit 4b83873d3da0704987cb116833818ed96214ee29 upstream.

If we boot into a crash-kernel the gart might still be
enabled and its caches might be dirty. This can result in
undefined behavior later. Fix it by explicitly disabling the
gart hardware before initialization and flushing the caches
after enablement.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoKVM: x86: Fix TSS size check for 16-bit tasks
Jan Kiszka [Wed, 14 Apr 2010 14:57:11 +0000 (16:57 +0200)]
KVM: x86: Fix TSS size check for 16-bit tasks

(Cherry-picked from commit e8861cfe2c75bdce36655b64d7ce02c2b31b604d)

A 16-bit TSS is only 44 bytes long. So make sure to test for the correct
size on task switch.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoKVM: Increase NR_IOBUS_DEVS limit to 200
Sridhar Samudrala [Tue, 30 Mar 2010 23:48:25 +0000 (16:48 -0700)]
KVM: Increase NR_IOBUS_DEVS limit to 200

(Cherry-picked from commit e80e2a60ff7914dae691345a976c80bbbff3ec74)

This patch increases the current hardcoded limit of NR_IOBUS_DEVS
from 6 to 200. We are hitting this limit when creating a guest with more
than 1 virtio-net device using vhost-net backend. Each virtio-net
device requires 2 such devices to service notifications from rx/tx queues.

Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoKVM: fix the handling of dirty bitmaps to avoid overflows
Takuya Yoshikawa [Mon, 12 Apr 2010 10:35:35 +0000 (19:35 +0900)]
KVM: fix the handling of dirty bitmaps to avoid overflows

(Cherry-picked from commit 87bf6e7de1134f48681fd2ce4b7c1ec45458cb6d)

Int is not long enough to store the size of a dirty bitmap.

This patch fixes this problem with the introduction of a wrapper
function to calculate the sizes of dirty bitmaps.

Note: in mark_page_dirty(), we have to consider the fact that
  __set_bit() takes the offset as int, not long.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoKVM: MMU: fix kvm_mmu_zap_page() and its calling path
Xiao Guangrong [Fri, 16 Apr 2010 08:34:42 +0000 (16:34 +0800)]
KVM: MMU: fix kvm_mmu_zap_page() and its calling path

(Cherry-picked from commit 77662e0028c7c63e34257fda03ff9625c59d939d)

This patch fix:

- calculate zapped page number properly in mmu_zap_unsync_children()
- calculate freeed page number properly kvm_mmu_change_mmu_pages()
- if zapped children page it shoud restart hlist walking

KVM-Stable-Tag.
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoKVM: VMX: Save/restore rflags.vm correctly in real mode
Avi Kivity [Thu, 8 Apr 2010 15:19:35 +0000 (18:19 +0300)]
KVM: VMX: Save/restore rflags.vm correctly in real mode

(Cherry-picked from commit 78ac8b47c566dd6177a3b9b291b756ccb70670b7)

Currently we set eflags.vm unconditionally when entering real mode emulation
through virtual-8086 mode, and clear it unconditionally when we enter protected
mode.  The means that the following sequence

  KVM_SET_REGS  (rflags.vm=1)
  KVM_SET_SREGS (cr0.pe=1)

Ends up with rflags.vm clear due to KVM_SET_SREGS triggering enter_pmode().

Fix by shadowing rflags.vm (and rflags.iopl) correctly while in real mode:
reads and writes to those bits access a shadow register instead of the actual
register.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoKVM: allow bit 10 to be cleared in MSR_IA32_MC4_CTL
Andre Przywara [Wed, 24 Mar 2010 16:46:42 +0000 (17:46 +0100)]
KVM: allow bit 10 to be cleared in MSR_IA32_MC4_CTL

(Cherry-picked from commit 114be429c8cd44e57f312af2bbd6734e5a185b0d)

There is a quirk for AMD K8 CPUs in many Linux kernels (see
arch/x86/kernel/cpu/mcheck/mce.c:__mcheck_cpu_apply_quirks()) that
clears bit 10 in that MCE related MSR. KVM can only cope with all
zeros or all ones, so it will inject a #GP into the guest, which
will let it panic.
So lets add a quirk to the quirk and ignore this single cleared bit.
This fixes -cpu kvm64 on all machines and -cpu host on K8 machines
with some guest Linux kernels.

Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoKVM: Don't spam kernel log when injecting exceptions due to bad cr writes
Avi Kivity [Thu, 11 Mar 2010 10:20:03 +0000 (12:20 +0200)]
KVM: Don't spam kernel log when injecting exceptions due to bad cr writes

(Cherry-picked from commit d6a23895aa82353788a1cc5a1d9a1c963465463e)

These are guest-triggerable.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoKVM: SVM: Fix memory leaks that happen when svm_create_vcpu() fails
Takuya Yoshikawa [Tue, 9 Mar 2010 05:55:19 +0000 (14:55 +0900)]
KVM: SVM: Fix memory leaks that happen when svm_create_vcpu() fails

(Cherry-picked from commit b7af40433870aa0636932ad39b0c48a0cb319057)

svm_create_vcpu() does not free the pages allocated during the creation
when it fails to complete the allocations. This patch fixes it.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agosched: Use proper type in sched_getaffinity()
KOSAKI Motohiro [Wed, 17 Mar 2010 00:36:58 +0000 (09:36 +0900)]
sched: Use proper type in sched_getaffinity()

commit 8bc037fb89bb3104b9ae290d18c877624cd7d9cc upstream.

Using the proper type fixes the following compiler warning:

  kernel/sched.c:4850: warning: comparison of distinct pointer types lacks a cast

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: torvalds@linux-foundation.org
Cc: travis@sgi.com
Cc: peterz@infradead.org
Cc: drepper@redhat.com
Cc: rja@sgi.com
Cc: sharyath@in.ibm.com
Cc: steiner@sgi.com
LKML-Reference: <20100317090046.4C79.A69D9226@jp.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agomptspi: Fix for incorrect data underrun errata
Kashyap, Desai [Wed, 7 Oct 2009 05:57:40 +0000 (11:27 +0530)]
mptspi: Fix for incorrect data underrun errata

commit 9b53b39243cf23a0b68eaa16c37ce16eada69a46 upstream.

Errata:
Certain conditions on the scsi bus may casue the 53C1030 to incorrectly signal
a SCSI_DATA_UNDERRUN to the host.

Workaround 1:
For an Errata on LSI53C1030 When the length of request data
and transfer data are different with result of command (READ or VERIFY),
DID_SOFT_ERROR is set.

Workaround 2:
For potential trouble on LSI53C1030. It is checked whether the length of
request data is equal to the length of transfer and residual.
MEDIUM_ERROR is set by incorrect data.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agomptctl : Remove printk which floods unnecessary messages to var/log/message
Kashyap, Desai [Wed, 7 Oct 2009 05:56:54 +0000 (11:26 +0530)]
mptctl : Remove printk which floods unnecessary messages to var/log/message

commit e39e145dfb78d4e20d89139d2576306b4279c126 upstream.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoIB/iser: Rewrite SG handling for RDMA logic
Or Gerlitz [Thu, 12 Nov 2009 19:32:27 +0000 (11:32 -0800)]
IB/iser: Rewrite SG handling for RDMA logic

commit c1ccaf2478f84c2665cf57f981db143aa582d646 upstream.

After dma-mapping an SG list provided by the SCSI midlayer, iser has
to make sure the mapped SG is "aligned for RDMA" in the sense that its
possible to produce one mapping in the HCA IOMMU which represents the
whole SG. Next, the mapped SG is formatted for registration with the HCA.

This patch re-writes the logic that does the above, to make it clearer
and simpler. It also fixes a bug in the being aligned for RDMA checks,
where a "start" check wasn't done but rather only "end" check.

[commit message in RH kernel tree: "Under heavy load, without the patch,
the HCA can be programmed to write (corrupt) into pages/location which
doesn't belong to the SG associated with the actual I/O and cause a
kernel oops."]

Signed-off-by: Alexander Nezhinsky <alexandern@voltaire.com>
Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agotpm: autoload tpm_tis based on system PnP IDs
Matt Domsch [Tue, 3 Nov 2009 01:05:50 +0000 (12:05 +1100)]
tpm: autoload tpm_tis based on system PnP IDs

commit 31bde71c202722a76686c3cf69a254c8a912275a upstream.

The tpm_tis driver already has a list of supported pnp_device_ids.
This patch simply exports that list as a MODULE_DEVICE_TABLE() so that
the module autoloader will discover and load the module at boottime.

Signed-off-by: Matt Domsch <Matt_Domsch@dell.com>
Acked-by: Rajiv Andrade <srajiv@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Morris <jmorris@namei.org>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoext4: fix async i/o writes beyond 4GB to a sparse file
Eric Sandeen [Fri, 5 Feb 2010 04:58:38 +0000 (23:58 -0500)]
ext4: fix async i/o writes beyond 4GB to a sparse file

commit a1de02dccf906faba2ee2d99cac56799bda3b96a upstream.

The "offset" member in ext4_io_end holds bytes, not blocks, so
ext4_lblk_t is wrong - and too small (u32).

This caused the async i/o writes to sparse files beyond 4GB to fail
when they wrapped around to 0.

Also fix up the type of arguments to ext4_convert_unwritten_extents(),
it gets ssize_t from ext4_end_aio_dio_nolock() and
ext4_ext_direct_IO().

Reported-by: Giel de Nijs <giel@vectorwise.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoext4: flush delalloc blocks when space is low
Eric Sandeen [Wed, 23 Dec 2009 12:58:12 +0000 (07:58 -0500)]
ext4: flush delalloc blocks when space is low

commit c8afb44682fcef6273e8b8eb19fab13ddd05b386 upstream.

Creating many small files in rapid succession on a small
filesystem can lead to spurious ENOSPC; on a 104MB filesystem:

for i in `seq 1 22500`; do
    echo -n > $SCRATCH_MNT/$i
    echo XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX > $SCRATCH_MNT/$i
done

leads to ENOSPC even though after a sync, 40% of the fs is free
again.

This is because we reserve worst-case metadata for delalloc writes,
and when data is allocated that worst-case reservation is not
usually needed.

When freespace is low, kicking off an async writeback will start
converting that worst-case space usage into something more realistic,
almost always freeing up space to continue.

This resolves the testcase for me, and survives all 4 generic
ENOSPC tests in xfstests.

We'll still need a hard synchronous sync to squeeze out the last bit,
but this fixes things up to a large degree.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agofs-writeback: Add helper function to start writeback if idle
Eric Sandeen [Wed, 23 Dec 2009 12:57:07 +0000 (07:57 -0500)]
fs-writeback: Add helper function to start writeback if idle

commit 17bd55d037a02b04d9119511cfd1a4b985d20f63 upstream.

ext4, at least, would like to start pushing on writeback if it starts
to get close to ENOSPC when reserving worst-case blocks for delalloc
writes.  Writing out delalloc data will convert those worst-case
predictions into usually smaller actual usage, freeing up space
before we hit ENOSPC based on this speculation.

Thanks to Jens for the suggestion for the helper function,
& the naming help.

I've made the helper return status on whether writeback was
started even though I don't plan to use it in the ext4 patch;
it seems like it would be potentially useful to test this
in some cases.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Acked-by: Jan Kara <jack@suse.cz>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agomac80211: fix deferred hardware scan requests
Johannes Berg [Wed, 3 Feb 2010 09:22:31 +0000 (10:22 +0100)]
mac80211: fix deferred hardware scan requests

commit c0ce77b8323c1a0d4eeef97caf16c0ea971222a9 upstream.

Reinette found the reason for the warnings that
happened occasionally when a hw-offloaded scan
finished; her description of the problem:

  mac80211 will defer the handling of scan requests if it is
  busy with management work at the time. The scan requests
  are deferred and run after the work has completed. When
  this occurs there are currently two problems.

  * The scan request for hardware scan is not fully populated
    with the band and channels to scan not initialized.

  * When the scan is queued the state is not correctly updated
    to reflect that a scan is in progress. The problem here is
    that when the driver completes the scan and calls
    ieee80211_scan_completed() a warning will be triggered
    since mac80211 was not aware that a scan was in progress.

The reason is that the queued scan work will start
the hw scan right away when the hw_scan_req struct
has already been allocated. However, in the first
pass it will not have been filled, which happens
at the same time as setting the bits. To fix this,
simply move the allocation after the pending work
test as well, so that the first iteration of the
scan work will call __ieee80211_start_scan() even
in the hardware scan case.

Bug-identified-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: Chase Douglas <chase.douglas@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoALSA: hda: Set Front Mic to input vref 50% for Lenovo 3000 Y410
Daniel T Chen [Sat, 19 Dec 2009 23:19:02 +0000 (18:19 -0500)]
ALSA: hda: Set Front Mic to input vref 50% for Lenovo 3000 Y410

commit e2595322a3a353a59cecd7f57e7aa421ecb02d12 upstream.

BugLink: https://bugs.launchpad.net/bugs/479373
The OR has verified with hda-verb that the internal microphone needs
VREF50 set for audible capture.

Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agonfsd: ensure sockets are closed on error
Neil Brown [Mon, 1 Mar 2010 03:01:05 +0000 (22:01 -0500)]
nfsd: ensure sockets are closed on error

commit 301e99ce4a2f42a317129230fd42e6cd874c64b0 upstream.

One the changes in commit d7979ae4a "svc: Move close processing to a
single place" is:

  err_delete:
-       svc_delete_socket(svsk);
+       set_bit(SK_CLOSE, &svsk->sk_flags);
        return -EAGAIN;

This is insufficient. The recvfrom methods must always call
svc_xprt_received on completion so that the socket gets re-queued if
there is any more work to do.  This particular path did not make that
call because it actually destroyed the svsk, making requeue pointless.
When the svc_delete_socket was change to just set a bit, we should have
added a call to svc_xprt_received,

This is the problem that b0401d7253 attempted to fix, incorrectly.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoRevert "sunrpc: move the close processing after do recvfrom method"
J. Bruce Fields [Sun, 28 Feb 2010 21:33:31 +0000 (16:33 -0500)]
Revert "sunrpc: move the close processing after do recvfrom method"

commit 1b644b6e6f6160ae35ce4b52c2ca89ed3e356e18 upstream.

This reverts commit b0401d725334a94d57335790b8ac2404144748ee, which
moved svc_delete_xprt() outside of XPT_BUSY, and allowed it to be called
after svc_xpt_recived(), removing its last reference and destroying it
after it had already been queued for future processing.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoRevert "sunrpc: fix peername failed on closed listener"
J. Bruce Fields [Sun, 28 Feb 2010 21:32:51 +0000 (16:32 -0500)]
Revert "sunrpc: fix peername failed on closed listener"

commit f5822754ea006563e1bf0a1f43faaad49c0d8bb2 upstream.

This reverts commit b292cf9ce70d221c3f04ff62db5ab13d9a249ca8.  The
commit that it attempted to patch up,
b0401d725334a94d57335790b8ac2404144748ee, was fundamentally wrong, and
will also be reverted.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agonfsd4: don't try to map gid's in generic rpc code
J. Bruce Fields [Tue, 20 Oct 2009 22:51:34 +0000 (18:51 -0400)]
nfsd4: don't try to map gid's in generic rpc code

commit dc83d6e27fa80babe31c80aa8568f125f72edf57 upstream.

For nfsd we provide users the option of mapping uid's to server-side
supplementary group lists.  That makes sense for nfsd, but not
necessarily for other rpc users (such as the callback client).

So move that lookup to svcauth_unix_set_client, which is a
program-specific method.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agomd: deal with merge_bvec_fn in component devices better.
NeilBrown [Wed, 31 Mar 2010 01:07:16 +0000 (12:07 +1100)]
md: deal with merge_bvec_fn in component devices better.

commit 627a2d3c29427637f4c5d31ccc7fcbd8d312cd71 upstream.

If a component device has a merge_bvec_fn then as we never call it
we must ensure we never need to.  Currently this is done by setting
max_sector to 1 PAGE, however this does not stop a bio being created
with several sub-page iovecs that would violate the merge_bvec_fn.

So instead set max_phys_segments to 1 and set the segment boundary to the
same as a page boundary to ensure there is only ever one single-page
segment of IO requested at a time.

This can particularly be an issue when 'xen' is used as it is
known to submit multiple small buffers in a single bio.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agomodule: fix __module_ref_addr()
Mathieu Desnoyers [Tue, 20 Apr 2010 14:38:10 +0000 (10:38 -0400)]
module: fix __module_ref_addr()

The __module_ref_addr() problem disappears in 2.6.34-rc kernels because these
percpu accesses were re-factored.

__module_ref_addr() should use per_cpu_ptr() to obfuscate the pointer
(RELOC_HIDE is needed for per cpu pointers).

This non-standard per-cpu pointer use has been introduced by commit
720eba31f47aeade8ec130ca7f4353223c49170f

It causes a NULL pointer exception on some configurations when CONFIG_TRACING is
enabled on 2.6.33. This patch fixes the problem (acknowledged by Randy who
reported the bug).

It did not appear to hurt previously because most of the accesses were done
through local_inc, which probably obfuscated the access enough that no compiler
optimizations were done. But with local_read() done when CONFIG_TRACING is
active, this becomes a problem. Non-CONFIG_TRACING is probably affected as well
(module.c contains local_set and local_read that use __module_ref_addr()), but I
guess nobody noticed because we've been lucky enough that the compiler did not
generate the inappropriate optimization pattern there.

This patch should be queued for the 2.6.29.x through 2.6.33.x stable branches.
(tested on 2.6.33.1 x86_64)

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Tested-by: Randy Dunlap <randy.dunlap@oracle.com>
CC: Eric Dumazet <dada1@cosmosbay.com>
CC: Rusty Russell <rusty@rustcorp.com.au>
CC: Peter Zijlstra <a.p.zijlstra@chello.nl>
CC: Tejun Heo <tj@kernel.org>
CC: Ingo Molnar <mingo@elte.hu>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Linus Torvalds <torvalds@linux-foundation.org>
CC: Greg Kroah-Hartman <gregkh@suse.de>
CC: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agolockdep: fix incorrect percpu usage
Mathieu Desnoyers [Tue, 20 Apr 2010 14:33:50 +0000 (10:33 -0400)]
lockdep: fix incorrect percpu usage

The mainline kernel as of 2.6.34-rc5 is not affected by this problem because
commit 10fad5e46f6c7bdfb01b1a012380a38e3c6ab346 fixed it by refactoring.

lockdep fix incorrect percpu usage

Should use per_cpu_ptr() to obfuscate the per cpu pointers (RELOC_HIDE is needed
for per cpu pointers).

git blame points to commit:

lockdep.c: commit 8e18257d29238311e82085152741f0c3aa18b74d

But it's really just moving the code around. But it's enough to say that the
problems appeared before Jul 19 01:48:54 2007, which brings us back to 2.6.23.

It should be applied to stable 2.6.23.x to 2.6.33.x (or whichever of these
stable branches are still maintained).

(tested on 2.6.33.1 x86_64)

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
CC: Randy Dunlap <randy.dunlap@oracle.com>
CC: Eric Dumazet <dada1@cosmosbay.com>
CC: Rusty Russell <rusty@rustcorp.com.au>
CC: Peter Zijlstra <a.p.zijlstra@chello.nl>
CC: Tejun Heo <tj@kernel.org>
CC: Ingo Molnar <mingo@elte.hu>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Linus Torvalds <torvalds@linux-foundation.org>
CC: Greg Kroah-Hartman <gregkh@suse.de>
CC: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agomodules: fix incorrect percpu usage
Mathieu Desnoyers [Tue, 20 Apr 2010 14:34:57 +0000 (10:34 -0400)]
modules: fix incorrect percpu usage

Mainline does not need this fix, as commit
259354deaaf03d49a02dbb9975d6ec2a54675672 fixed the problem by refactoring.

Should use per_cpu_ptr() to obfuscate the per cpu pointers (RELOC_HIDE is needed
for per cpu pointers).

Introduced by commit:

module.c: commit 6b588c18f8dacfa6d7957c33c5ff832096e752d3

This patch should be queued for the stable branch, for kernels 2.6.29.x to
2.6.33.x.  (tested on 2.6.33.1 x86_64)

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
CC: Randy Dunlap <randy.dunlap@oracle.com>
CC: Eric Dumazet <dada1@cosmosbay.com>
CC: Rusty Russell <rusty@rustcorp.com.au>
CC: Peter Zijlstra <a.p.zijlstra@chello.nl>
CC: Tejun Heo <tj@kernel.org>
CC: Ingo Molnar <mingo@elte.hu>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Linus Torvalds <torvalds@linux-foundation.org>
CC: Greg Kroah-Hartman <gregkh@suse.de>
CC: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoInput: wacom - switch mode upon system resume
Ping Cheng [Mon, 19 Apr 2010 18:10:50 +0000 (11:10 -0700)]
Input: wacom - switch mode upon system resume

commit 014f61504af276ba9d9544d8a7401d8f8526eb73 upstream.

When Wacom devices wake up from a sleep, the switch mode command
(wacom_query_tablet_data) is needed before wacom_open is called.
wacom_query_tablet_data should not be executed inside wacom_open
since wacom_open is called more than once during probe.

Reported-and-tested-by: Anton Anikin <Anton@Anikin.name>
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoACPI: EC: Limit burst to 64 bits
Alexey Starikovskiy [Fri, 16 Apr 2010 19:36:40 +0000 (15:36 -0400)]
ACPI: EC: Limit burst to 64 bits

commit 2060c44576c79086ff24718878d7edaa7384a985 upstream.

access_bit_width field is u8 in ACPICA, thus 256 value written to it
becomes 0, causing divide by zero later.

Proper fix would be to remove access_bit_width at all, just because
we already have access_byte_width, which is access_bit_width / 8.
Limit access width to 64 bit for now.

https://bugzilla.kernel.org/show_bug.cgi?id=15749
fixes regression caused by the fix for:
https://bugzilla.kernel.org/show_bug.cgi?id=14667

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoACPI: EC: Allow multibyte access to EC
Alexey Starikovskiy [Sat, 10 Apr 2010 01:18:35 +0000 (02:18 +0100)]
ACPI: EC: Allow multibyte access to EC

commit dadf28a10c3eb29421837a2e413ab869ebd upstream

http://bugzilla.kernel.org/show_bug.cgi?id=14667

[bwh: Backport to 2.6.32; same applies to 2.6.33]

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoperf_events, x86: Implement Intel Westmere/Nehalem-EX support
Peter Zijlstra [Fri, 16 Apr 2010 09:14:41 +0000 (05:14 -0400)]
perf_events, x86: Implement Intel Westmere/Nehalem-EX support

original patch commit ids: 452a339a976e7f782c786eb3f73080401e2fa3a6 and
134fbadf028a5977a1b06b0253d3ee33e6f0c642

perf_events, x86: Implement Intel Westmere support

The new Intel documentation includes Westmere arch specific
event maps that are significantly different from the Nehalem
ones. Add support for this generation.

Found the CPUID model numbers on wikipedia.

Also ammend some Nehalem constraints, spotted those when looking
for the differences between Nehalem and Westmere.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <20100127221122.151865645@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
perf, x86: Enable Nehalem-EX support

According to Intel Software Devel Manual Volume 3B, the
Nehalem-EX PMU is just like regular Nehalem (except for the
uncore support, which is completely different).

Signed-off-by: Vince Weaver <vweaver1@eecs.utk.edu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Lin Ming <ming.m.lin@intel.com>
LKML-Reference: <alpine.DEB.2.00.1004060956580.1417@cl320.eecs.utk.edu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Youquan Song <youquan.song@linux.intel.com>
14 years agotcp: fix ICMP-RTO war
Damian Lukowski [Thu, 11 Feb 2010 02:04:08 +0000 (18:04 -0800)]
tcp: fix ICMP-RTO war

commit 598856407d4e20ebb4de01a91a93d89325924d43 upstream.

Make sure, that TCP has a nonzero RTT estimation after three-way
handshake. Currently, a listening TCP has a value of 0 for srtt,
rttvar and rto right after the three-way handshake is completed
with TCP timestamps disabled.
This will lead to corrupt RTO recalculation and retransmission
flood when RTO is recalculated on backoff reversion as introduced
in "Revert RTO on ICMP destination unreachable"
(f1ecd5d9e7366609d640ff4040304ea197fbc618).
This behaviour can be provoked by connecting to a server which
"responds first" (like SMTP) and rejecting every packet after
the handshake with dest-unreachable, which will lead to softirq
load on the server (up to 30% per socket in some tests).

Thanks to Ilpo Jarvinen for providing debug patches and to
Denys Fedoryshchenko for reporting and testing.

Changes since v3: Removed bad characters in patchfile.

Reported-by: Denys Fedoryshchenko <denys@visp.net.lb>
Signed-off-by: Damian Lukowski <damian@tvk.rwth-aachen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agor8169: offical fix for CVE-2009-4537 (overlength frame DMAs)
Neil Horman [Mon, 29 Mar 2010 20:16:02 +0000 (13:16 -0700)]
r8169: offical fix for CVE-2009-4537 (overlength frame DMAs)

commit c0cd884af045338476b8e69a61fceb3f34ff22f1 upstream.

Official patch to fix the r8169 frame length check error.

Based on this initial thread:
http://marc.info/?l=linux-netdev&m=126202972828626&w=1
This is the official patch to fix the frame length problems in the r8169
driver.  As noted in the previous thread, while this patch incurs a performance
hit on the driver, its possible to improve performance dynamically by updating
the mtu and rx_copybreak values at runtime to return performance to what it was
for those NICS which are unaffected by the ideosyncracy (if there are any).

Summary:

    A while back Eric submitted a patch for r8169 in which the proper
allocated frame size was written to RXMaxSize to prevent the NIC from dmaing too
much data.  This was done in commit fdd7b4c3302c93f6833e338903ea77245eb510b4.  A
long time prior to that however, Francois posted
126fa4b9ca5d9d7cb7d46f779ad3bd3631ca387c, which expiclitly disabled the MaxSize
setting due to the fact that the hardware behaved in odd ways when overlong
frames were received on NIC's supported by this driver.  This was mentioned in a
security conference recently:
http://events.ccc.de/congress/2009/Fahrplan//events/3596.en.html

It seems that if we can't enable frame size filtering, then, as Eric correctly
noticed, we can find ourselves DMA-ing too much data to a buffer, causing
corruption.  As a result is seems that we are forced to allocate a frame which
is ready to handle a maximally sized receive.

This obviously has performance issues with it, so to mitigate that issue, this
patch does two things:

1) Raises the copybreak value to the frame allocation size, which should force
appropriately sized packets to get allocated on rx, rather than a full new 16k
buffer.

2) This patch only disables frame filtering initially (i.e., during the NIC
open), changing the MTU results in ring buffer allocation of a size in relation
to the new mtu (along with a warning indicating that this is dangerous).

Because of item (2), individuals who can't cope with the performance hit (or can
otherwise filter frames to prevent the bug), or who have hardware they are sure
is unaffected by this issue, can manually lower the copybreak and reset the mtu
such that performance is restored easily.

Signed-off-by: Neil Horman <nhorman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoe1000e: stop cleaning when we reach tx_ring->next_to_use
Terry Loftin [Fri, 9 Apr 2010 10:29:49 +0000 (10:29 +0000)]
e1000e: stop cleaning when we reach tx_ring->next_to_use

commit dac876193cd79ced36d0462749ea47c05844fb49 upstream.

Tx ring buffers after tx_ring->next_to_use are volatile and could
change, possibly causing a crash.  Stop cleaning when we hit
tx_ring->next_to_use.

Signed-off-by: Terry Loftin <terry.loftin@hp.com>
Acked-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Matthew Burgess <matthew@linuxfromscratch.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoiwlwifi: fix scan race
Reinette Chatre [Tue, 2 Feb 2010 18:57:12 +0000 (10:57 -0800)]
iwlwifi: fix scan race

commit bbcbb9ef9735c67da303d30bd6beb9e699f0f508 upstream.

There is a problem if an "internal short scan" is in progress when a
mac80211 requested scan arrives. If this new scan request arrives within
the "next_scan_jiffies" period then driver will immediately return success
and complete the scan. The problem here is that the scan has not been
fully initialized at this time (is_internal_short_scan is still set to true
because of the currently running scan), which results in the scan
completion never to be sent to mac80211. At this time also, evan though the
internal short scan is still running the state (is_internal_short_scan)
will be set to false, so when the internal scan does complete then mac80211
will receive a scan completion.

Fix this by checking right away if a scan is in progress when a scan
request arrives from mac80211.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoiwlwifi: clear all tx queues when firmware ready
Wey-Yi Guy [Wed, 3 Feb 2010 00:58:34 +0000 (16:58 -0800)]
iwlwifi: clear all tx queues when firmware ready

commit dff010ac8e57e43669518a14c0e945dfeb80c2a7 upstream.

Reset and clear all the tx queues when finished downloading runtime
uCode and ready to go into operation mode.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: cdc-acm: Fix stupid NULL pointer in resume()
Oliver Neukum [Tue, 2 Mar 2010 23:37:56 +0000 (00:37 +0100)]
USB: cdc-acm: Fix stupid NULL pointer in resume()

commit f0730924e9e32bb8935c60040a26d94179355088 upstream.

Stupid logic bug passing a just nulled pointer

Signed-off-by: Oliver Neukum <neukum@b1-systems.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoUSB: cdc-acm: Update to new autopm API
Oliver Neukum [Wed, 16 Dec 2009 16:05:57 +0000 (17:05 +0100)]
USB: cdc-acm: Update to new autopm API

commit 97d35f95552c9a0ee4777a7f04431a9fd1260478 upstream.

Update cdc-acm to the async methods eliminating the workqueue

[This fixes a reported lockup for the cdc-acm driver - gregkh]

Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agosched: Fix a race between ttwu() and migrate_task()
John Wright [Tue, 13 Apr 2010 22:55:37 +0000 (16:55 -0600)]
sched: Fix a race between ttwu() and migrate_task()

Based on commit e2912009fb7b715728311b0d8fe327a1432b3f79 upstream, but
done differently as this issue is not present in .33 or .34 kernels due
to rework in this area.

If a task is in the TASK_WAITING state, then try_to_wake_up() is working
on it, and it will place it on the correct cpu.

This commit ensures that neither migrate_task() nor __migrate_task()
calls set_task_cpu(p) while p is in the TASK_WAKING state.  Otherwise,
there could be two concurrent calls to set_task_cpu(p), resulting in
the task's cfs_rq being inconsistent with its cpu.

Signed-off-by: John Wright <john.wright@hp.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoecryptfs: fix error code for missing xattrs in lower fs
Christian Pulvermacher [Tue, 23 Mar 2010 16:51:38 +0000 (11:51 -0500)]
ecryptfs: fix error code for missing xattrs in lower fs

commit cfce08c6bdfb20ade979284e55001ca1f100ed51 upstream.

If the lower file system driver has extended attributes disabled,
ecryptfs' own access functions return -ENOSYS instead of -EOPNOTSUPP.
This breaks execution of programs in the ecryptfs mount, since the
kernel expects the latter error when checking for security
capabilities in xattrs.

Signed-off-by: Christian Pulvermacher <pulvermacher@gmx.de>
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoeCryptfs: Decrypt symlink target for stat size
Tyler Hicks [Mon, 22 Mar 2010 05:41:35 +0000 (00:41 -0500)]
eCryptfs: Decrypt symlink target for stat size

commit 3a60a1686f0d51c99bd0df8ac93050fb6dfce647 upstream.

Create a getattr handler for eCryptfs symlinks that is capable of
reading the lower target and decrypting its path.  Prior to this patch,
a stat's st_size field would represent the strlen of the encrypted path,
while readlink() would return the strlen of the decrypted path.  This
could lead to confusion in some userspace applications, since the two
values should be equal.

https://bugs.launchpad.net/bugs/524919

Reported-by: Loïc Minier <loic.minier@canonical.com>
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoecryptfs: fix use with tmpfs by removing d_drop from ecryptfs_destroy_inode
Jeff Mahoney [Fri, 19 Mar 2010 19:35:46 +0000 (15:35 -0400)]
ecryptfs: fix use with tmpfs by removing d_drop from ecryptfs_destroy_inode

commit 133b8f9d632cc23715c6d72d1c5ac449e054a12a upstream.

Since tmpfs has no persistent storage, it pins all its dentries in memory
so they have d_count=1 when other file systems would have d_count=0.
->lookup is only used to create new dentries. If the caller doesn't
instantiate it, it's freed immediately at dput(). ->readdir reads
directly from the dcache and depends on the dentries being hashed.

When an ecryptfs mount is mounted, it associates the lower file and dentry
with the ecryptfs files as they're accessed. When it's umounted and
destroys all the in-memory ecryptfs inodes, it fput's the lower_files and
d_drop's the lower_dentries. Commit 4981e081 added this and a d_delete in
2008 and several months later commit caeeeecf removed the d_delete. I
believe the d_drop() needs to be removed as well.

The d_drop effectively hides any file that has been accessed via ecryptfs
from the underlying tmpfs since it depends on it being hashed for it to
be accessible. I've removed the d_drop on my development node and see no
ill effects with basic testing on both tmpfs and persistent storage.

As a side effect, after ecryptfs d_drops the dentries on tmpfs, tmpfs
BUGs on umount. This is due to the dentries being unhashed.
tmpfs->kill_sb is kill_litter_super which calls d_genocide to drop
the reference pinning the dentry. It skips unhashed and negative dentries,
but shrink_dcache_for_umount_subtree doesn't. Since those dentries
still have an elevated d_count, we get a BUG().

This patch removes the d_drop call and fixes both issues.

This issue was reported at:
https://bugzilla.novell.com/show_bug.cgi?id=567887

Reported-by: Árpád Bíró <biroa@demasz.hu>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Cc: Dustin Kirkland <kirkland@canonical.com>
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agob43: Optimize PIO scratchbuffer usage
Michael Buesch [Fri, 9 Oct 2009 18:33:32 +0000 (20:33 +0200)]
b43: Optimize PIO scratchbuffer usage

commit 88499ab3d8dbbf9c080416952603742666c71262 upstream.

This optimizes the PIO scratchbuffer usage.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoagp/hp: fixup hp agp after ACPI changes
Bjorn Helgaas [Thu, 7 Jan 2010 19:58:51 +0000 (12:58 -0700)]
agp/hp: fixup hp agp after ACPI changes

commit 67fe63b0715ccfaefa0af8a6e705c5470ee5cada upstream.

Commit 15b8dd53f5ffa changed the string in info->hardware_id from a static
array to a pointer and added a length field.  But instead of changing
"sizeof(array)" to "length", we changed it to "sizeof(length)" (== 4),
which corrupts the string we're trying to null-terminate.

We no longer even need to null-terminate the string, but we *do* need to
check whether we found a HID.  If there's no HID, we used to have an empty
array, but now we have a null pointer.

The combination of these defects causes this oops:

  Unable to handle kernel NULL pointer dereference (address 0000000000000003)
  modprobe[895]: Oops 8804682956800 [1]
  ip is at zx1_gart_probe+0xd0/0xcc0 [hp_agp]

  http://marc.info/?l=linux-ia64&m=126264484923647&w=2

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Reported-by: Émeric Maschino <emeric.maschino@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoALSA: hda - Add position_fix quirk for Biostar mobo
Takashi Iwai [Thu, 15 Apr 2010 07:02:41 +0000 (09:02 +0200)]
ALSA: hda - Add position_fix quirk for Biostar mobo

commit 8815cd030fdd73932a791d1f06194c8db807cde7 upstream.

The Biostar mobo seems to give a wrong DMA position, resulting in
stuttering or skipping sounds on 2.6.34.  Since the commit
7b3a177b0d4f92b3431b8dca777313a07533a710, "ALSA: pcm_lib: fix "something
must be really wrong" condition", makes the position check more strictly,
the DMA position problem is revealed more clearly now.

The fix is to use only LPIB for obtaining the position, i.e. passing
position_fix=1.  This patch adds a static quirk to achieve it as default.

Reported-by: Frank Griffin <ftg@roadrunner.com>
Cc: Eric Piel <Eric.Piel@tremplin-utc.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agob43: fall back gracefully to PIO mode after fatal DMA errors
Linus Torvalds [Fri, 26 Feb 2010 18:34:27 +0000 (10:34 -0800)]
b43: fall back gracefully to PIO mode after fatal DMA errors

commit 9e3bd9190800e8209b4a3e1d724c35f0738dcad2 upstream.

This makes the b43 driver just automatically fall back to PIO mode when
DMA doesn't work.

The driver already told the user to do it, so rather than have the user
reload the module with a new flag, just make the driver do it
automatically. We keep the message as an indication that something is
wrong, but now just automatically fall back to the hopefully working PIO
case.

(Some post-2.6.33 merge fixups by Larry Finger <Larry.Finger@lwfinger.net>
and yours truly... -- JWL)

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agob43: Allow PIO mode to be selected at module load
Larry Finger [Thu, 10 Dec 2009 23:35:01 +0000 (17:35 -0600)]
b43: Allow PIO mode to be selected at module load

commit b02914af4d7020828ce921a572589dd793517c09 upstream.

If userencounter the "Fatal DMA Problem" with a BCM43XX device, and
still wish to use b43 as the driver, their only option is to rebuild
the kernel with CONFIG_B43_FORCE_PIO. This patch removes this option and
allows PIO mode to be selected with a load-time parameter for the module.
Note that the configuration variable CONFIG_B43_PIO is also removed.

Once the DMA problem with the BCM4312 devices is solved, this patch will
likely be reverted.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Tested-by: John Daiker <daikerjohn@gmail.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agob43: Remove reset after fatal DMA error
Larry Finger [Wed, 9 Dec 2009 19:25:56 +0000 (13:25 -0600)]
b43: Remove reset after fatal DMA error

commit 214ac9a4ead6cb254451c09d9c8234a76693feb1 upstream.

As shown in Kernel Bugzilla #14761, doing a controller restart after a
fatal DMA error does not accomplish anything other than consume the CPU
on an affected system. Accordingly, substitute a meaningful message for
the restart.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoi2c-i801: Add Intel Cougar Point device IDs
Seth Heasley [Tue, 2 Mar 2010 11:23:39 +0000 (12:23 +0100)]
i2c-i801: Add Intel Cougar Point device IDs

commit 393764340beb595c1ad7dd2d2243c2b6551aaa71 upstream.

Add the Intel Cougar Point (PCH) SMBus controller device IDs.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoahci: AHCI and RAID mode SATA patch for Intel Cougar Point DeviceIDs
Seth Heasley [Wed, 13 Jan 2010 01:00:18 +0000 (17:00 -0800)]
ahci: AHCI and RAID mode SATA patch for Intel Cougar Point DeviceIDs

commit 5623cab83ea61e0420f2064216d83eab067a24c6 upstream.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoata_piix: IDE Mode SATA patch for Intel Cougar Point DeviceIDs
Seth Heasley [Wed, 13 Jan 2010 01:01:28 +0000 (17:01 -0800)]
ata_piix: IDE Mode SATA patch for Intel Cougar Point DeviceIDs

commit 88e8201e67aace3d86de9e75122ea525f0e7248e upstream.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoALSA: hda - enable snoop for Intel Cougar Point
Seth Heasley [Tue, 23 Feb 2010 01:31:09 +0000 (17:31 -0800)]
ALSA: hda - enable snoop for Intel Cougar Point

commit 32679f95cac3b1bdf27dce8b5273e06af186fd91 upstream.

This patch enables snoop, eliminating static during playback.
This patch supersedes the previous Cougar Point audio patch.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoALSA: hda_intel: ALSA HD Audio patch for Intel Cougar Point DeviceIDs
Seth Heasley [Wed, 13 Jan 2010 01:03:35 +0000 (17:03 -0800)]
ALSA: hda_intel: ALSA HD Audio patch for Intel Cougar Point DeviceIDs

commit d2f2fcd2541bae004db7f4798ffd9d2cb75ae817 upstream.

This patch adds the Intel Cougar Point (PCH) HD Audio Controller DeviceIDs.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86/PCI: irq and pci_ids patch for Intel Cougar Point DeviceIDs
Seth Heasley [Wed, 13 Jan 2010 00:56:37 +0000 (16:56 -0800)]
x86/PCI: irq and pci_ids patch for Intel Cougar Point DeviceIDs

commit 93da6202264ce1256b04db8008a43882ae62d060 upstream.

This patch adds the Intel Cougar Point (PCH) LPC and SMBus Controller DeviceIDs.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoIPoIB: Fix TX queue lockup with mixed UD/CM traffic
Eli Cohen [Wed, 3 Mar 2010 12:27:52 +0000 (12:27 +0000)]
IPoIB: Fix TX queue lockup with mixed UD/CM traffic

commit f0dc117abdfa9a0e96c3d013d836460ef3cd08c7 upstream.

The IPoIB UD QP reports send completions to priv->send_cq, which is
usually left unarmed; it only gets armed when the number of
outstanding send requests reaches the size of the TX queue. This
arming is done only in the send path for the UD QP.  However, when
sending CM packets, the net queue may be stopped for the same reasons
but no measures are taken to recover the UD path from a lockup.

Consider this scenario: a host sends high rate of both CM and UD
packets, with a TX queue length of N.  If at some time the number of
outstanding UD packets is more than N/2 and the overall outstanding
packets is N-1, and CM sends a packet (making the number of
outstanding sends equal N), the TX queue will be stopped.  When all
the CM packets complete, the number of outstanding packets will still
be higher than N/2 so the TX queue will not be restarted.

Fix this by calling ib_req_notify_cq() when the queue is stopped in
the CM path.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoPCI: fix nested spinlock hang in aer_inject
Andrew Patterson [Fri, 22 Jan 2010 21:06:53 +0000 (14:06 -0700)]
PCI: fix nested spinlock hang in aer_inject

commit bd1f46deba615971a58193afd0202878cadf19a7 upstream.

The aer_inject module hangs in aer_inject() when checking the device's
error masks.  The hang is due to a recursive use of the aer_inject lock.
The aer_inject() routine grabs the lock while processing the error and then
calls pci_read_config_dword to read the masks. The pci_read_config_dword
routine is earlier overridden by pci_read_aer, which among other things,
grabs the aer_inject lock.

Fixed by moving the pci_read_config_dword calls to read the masks to before
the lock is taken.

Acked-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoPCI: kill off pci_register_set_vga_state() symbol export.
Paul Mundt [Thu, 11 Mar 2010 22:08:33 +0000 (14:08 -0800)]
PCI: kill off pci_register_set_vga_state() symbol export.

commit ded1d8f29b4d315a2093cafc3ee17ac870a87972 upstream.

When pci_register_set_vga_state() was made __init, the EXPORT_SYMBOL() was
retained, which now leaves us with a section mismatch.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Cc: Mike Travis <travis@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agopci: Update pci_set_vga_state() to call arch functions
Mike Travis [Tue, 2 Feb 2010 22:38:13 +0000 (14:38 -0800)]
pci: Update pci_set_vga_state() to call arch functions

commit 95a8b6efc5d07103583f706c8a5889437d537939 upstream.

Update pci_set_vga_state to call arch dependent functions to enable Legacy
VGA I/O transactions to be redirected to correct target.

[akpm@linux-foundation.org: make pci_register_set_vga_state() __init]
Signed-off-by: Mike Travis <travis@sgi.com>
LKML-Reference: <201002022238.o12McE1J018723@imap1.linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Robin Holt <holt@sgi.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoSCSI: fc-transport: Use packed modifier for fc_bsg_request structure.
Harish Zunjarrao [Tue, 12 Jan 2010 20:59:50 +0000 (12:59 -0800)]
SCSI: fc-transport: Use packed modifier for fc_bsg_request structure.

commit eda05a28ec52be40086400a1b606d211276f0e41 upstream.

The 32bit kernel does not add padding bytes in the fc_bsg_request structure
whereas the 64bit kernel adds padding bytes in the fc_bsg_request structure.
Due to this, structure elements gets mismatched with 32bit application and
64bit kernel.To resolve this, used packed modifier to avoid adding padding bytes.
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agovgaarb: Fix VGA arbiter to accept PCI domains other than 0
Mike Travis [Tue, 2 Feb 2010 22:38:15 +0000 (14:38 -0800)]
vgaarb: Fix VGA arbiter to accept PCI domains other than 0

commit 773a38dbdad03474c5ee235f7d9bf9f51c9e3c2b upstream.

Update the VGA Arbiter to accept PCI Domains other than 0.

Signed-off-by: Mike Travis <travis@sgi.com>
LKML-Reference: <201002022238.o12McFe8018730@imap1.linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Robin Holt <holt@sgi.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoPCIe AER: prevent AER injection if hardware masks error reporting
Youquan Song [Thu, 17 Dec 2009 13:22:48 +0000 (08:22 -0500)]
PCIe AER: prevent AER injection if hardware masks error reporting

commit b49bfd32901625e4adcfee011d2b32a43b4db67d upstream.

The Correcteable/Uncorrectable Error Mask Registers are used by PCIe AER
driver which will controls the reporting of individual errors to PCIe RC
via PCIe error messages.

If hardware masks special error reporting to RC, the aer_inject driver
should not inject aer error.

Acked-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Youquan Song <youquan.song@intel.com>
Acked-by: Ying Huang <ying.huang@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoigb: add support for 82576NS SerDes adapter
Alexander Duyck [Mon, 5 Oct 2009 06:33:27 +0000 (06:33 +0000)]
igb: add support for 82576NS SerDes adapter

commit 747d49baaf4e3f4ad5ae77477830da026eeef69d upstream.

This patch adds the device ID necessary to support the 82576NS SerDes
adapter.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoSCSI: add scsi target reset support to scsi ioctl
Mike Christie [Thu, 5 Nov 2009 17:37:28 +0000 (11:37 -0600)]
SCSI: add scsi target reset support to scsi ioctl

commit 3f9daedfcb197d784c6e7ecd731e3aa9859bc951 upstream.

The scsi ioctl code path was missing scsi target reset
support. This patch just adds it.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agofc class: fail fast bsg requests
Mike Christie [Thu, 5 Nov 2009 17:18:09 +0000 (11:18 -0600)]
fc class: fail fast bsg requests

commit 2bc1c59dbdefdb6f9767e06efb86bbdb2923a8be upstream.

If the port state is blocked and the fast io fail tmo has
fired then this patch will fail bsg requests immediately.
This is needed if userspace is sending IOs to test the transport
like with fcping, so it will not have to wait for the dev loss tmo.
With this patch he bsg req fast io fail code behaves like the normal
and sg io/passthrough fast io fail.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-By: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years ago9p: Skip check for mandatory locks when unlocking
Sachin Prabhu [Sat, 13 Mar 2010 15:03:55 +0000 (09:03 -0600)]
9p: Skip check for mandatory locks when unlocking

commit f78233dd44a110c574fe760ad6f9c1e8741a0d00 upstream.

While investigating a bug, I came across a possible bug in v9fs. The
problem is similar to the one reported for NFS by ASANO Masahiro in
http://lkml.org/lkml/2005/12/21/334.

v9fs_file_lock() will skip locks on file which has mode set to 02666.
This is a problem in cases where the mode of the file is changed after
a process has obtained a lock on the file. Such a lock will be skipped
during unlock and the machine will end up with a BUG in
locks_remove_flock().

v9fs_file_lock() should skip the check for mandatory locks when
unlocking a file.

Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoocfs2: Change bg_chain check for ocfs2_validate_gd_parent.
Tao Ma [Wed, 3 Mar 2010 03:26:27 +0000 (11:26 +0800)]
ocfs2: Change bg_chain check for ocfs2_validate_gd_parent.

commit 78c37eb0d5e6a9727b12ea0f1821795ffaa66cfe upstream.

In ocfs2_validate_gd_parent, we check bg_chain against the
cl_next_free_rec of the dinode. Actually in resize, we have
the chance of bg_chain == cl_next_free_rec. So add some
additional condition check for it.

I also rename paramter "clean_error" to "resize", since the
old one is not clearly enough to indicate that we should only
meet with this case in resize.

btw, the correpsonding bug is
http://oss.oracle.com/bugzilla/show_bug.cgi?id=1230.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoocfs2: set i_mode on disk during acl operations
Mark Fasheh [Mon, 15 Mar 2010 22:39:00 +0000 (15:39 -0700)]
ocfs2: set i_mode on disk during acl operations

commit fcefd25ac89239cb57fa198f125a79ff85468c75 upstream.

ocfs2_set_acl() and ocfs2_init_acl() were setting i_mode on the in-memory
inode, but never setting it on the disk copy. Thus, acls were some times not
getting propagated between nodes. This patch fixes the issue by adding a
helper function ocfs2_acl_set_mode() which does this the right way.
ocfs2_set_acl() and ocfs2_init_acl() are then updated to call
ocfs2_acl_set_mode().

Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Cc: maximilian attems <max@stro.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoStaging: comedi: usbdux.c: fix locking up of the driver when the comedi ringbuffer...
Bernd Porr [Fri, 27 Nov 2009 12:00:53 +0000 (12:00 +0000)]
Staging: comedi: usbdux.c: fix locking up of the driver when the comedi ringbuffer runs empty

commit d4c3a56587af3edbe5f618b20e800e9f9fde13cb upstream.

Jan-Matthias Braun spotted a bug which locks up the driver when the
comedi ring buffer runs empty and provided a patch. The driver would
still send the data to comedi but the reader won't wake up any more.
What's required is setting the flag COMEDI_CB_BLOCK after new data has
arrived which wakes up the reader and therefore the read() command.

Signed-off-by: Bernd Porr <berndporr@f2s.com>
Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoStaging: comedi: fix usbdux timeout bug
Bernd Porr [Mon, 16 Nov 2009 01:12:02 +0000 (01:12 +0000)]
Staging: comedi: fix usbdux timeout bug

commit ea25371a78c33e276527361d3ab19393d558b2fd upstream.

I've fixed a bug in the USBDUX driver which caused timeouts while
sending commands to the boards. This was mainly because of one bulk
transfer which had a timeout of 1ms (!). I've now set all timeouts to
1000ms.

From: Bernd Porr <BerndPorr@f2s.com>
Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoquota: Fix possible dq_flags corruption
Andrew Perepechko [Mon, 12 Apr 2010 18:16:50 +0000 (22:16 +0400)]
quota: Fix possible dq_flags corruption

commit 08261673cb6dc638c39f44d69b76fffb57b92a8b upstream.

dq_flags are modified non-atomically in do_set_dqblk via __set_bit calls and
atomically for example in mark_dquot_dirty or clear_dquot_dirty.  Hence a
change done by an atomic operation can be overwritten by a change done by a
non-atomic one. Fix the problem by using atomic bitops even in do_set_dqblk.

Signed-off-by: Andrew Perepechko <andrew.perepechko@sun.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agodm mpath: fix stall when requeueing io
Kiyoshi Ueda [Fri, 26 Mar 2010 06:33:13 +0000 (12:03 +0530)]
dm mpath: fix stall when requeueing io

upstream commit 9eef87da2a8ea4920e0d913ff977cac064b68ee0 backported to
2.6.32.10 by Nikanth Karthikesan <knikanth@suse.de>

This patch fixes the problem that system may stall if target's ->map_rq
returns DM_MAPIO_REQUEUE in map_request().
E.g. stall happens on 1 CPU box when a dm-mpath device with queue_if_no_path
     bounces between all-paths-down and paths-up on I/O load.

When target's ->map_rq returns DM_MAPIO_REQUEUE, map_request() requeues
the request and returns to dm_request_fn().  Then, dm_request_fn()
doesn't exit the I/O dispatching loop and continues processing
the requeued request again.
This map and requeue loop can be done with interrupt disabled,
so 1 CPU system can be stalled if this situation happens.

For example, commands below can stall my 1 CPU box within 1 minute or so:
  # dmsetup table mp
  mp: 0 2097152 multipath 1 queue_if_no_path 0 1 1 service-time 0 1 2 8:144 1 1
  # while true; do dd if=/dev/mapper/mp of=/dev/null bs=1M count=100; done &
  # while true; do \
  > dmsetup message mp 0 "fail_path 8:144" \
  > dmsetup suspend --noflush mp \
  > dmsetup resume mp \
  > dmsetup message mp 0 "reinstate_path 8:144" \
  > done

To fix the problem above, this patch changes dm_request_fn() to exit
the I/O dispatching loop once if a request is requeued in map_request().

Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agofix NFS4 handling of mountpoint stat
Al Viro [Sat, 30 Jan 2010 21:11:21 +0000 (16:11 -0500)]
fix NFS4 handling of mountpoint stat

commit 462d60577a997aa87c935ae4521bd303733a9f2b upstream.

RFC says we need to follow the chain of mounts if there's more
than one stacked on that point.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86-64, rwsem: Avoid store forwarding hazard in __downgrade_write
Avi Kivity [Sat, 13 Feb 2010 08:33:12 +0000 (10:33 +0200)]
x86-64, rwsem: Avoid store forwarding hazard in __downgrade_write

commit 0d1622d7f526311d87d7da2ee7dd14b73e45d3fc upstream.

The Intel Architecture Optimization Reference Manual states that a short
load that follows a long store to the same object will suffer a store
forwading penalty, particularly if the two accesses use different addresses.
Trivially, a long load that follows a short store will also suffer a penalty.

__downgrade_write() in rwsem incurs both penalties:  the increment operation
will not be able to reuse a recently-loaded rwsem value, and its result will
not be reused by any recently-following rwsem operation.

A comment in the code states that this is because 64-bit immediates are
special and expensive; but while they are slightly special (only a single
instruction allows them), they aren't expensive: a test shows that two loops,
one loading a 32-bit immediate and one loading a 64-bit immediate, both take
1.5 cycles per iteration.

Fix this by changing __downgrade_write to use the same add instruction on
i386 and on x86_64, so that it uses the same operand size as all the other
rwsem functions.

Signed-off-by: Avi Kivity <avi@redhat.com>
LKML-Reference: <1266049992-17419-1-git-send-email-avi@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86: Fix breakage of UML from the changes in the rwsem system
Linus Torvalds [Sun, 17 Jan 2010 18:24:07 +0000 (10:24 -0800)]
x86: Fix breakage of UML from the changes in the rwsem system

commit 4126faf0ab7417fbc6eb99fb0fd407e01e9e9dfe upstream.

The patches 5d0b7235d83eefdafda300656e97d368afcafc9a and
bafaecd11df15ad5b1e598adc7736afcd38ee13d broke the UML build:

On Sun, 17 Jan 2010, Ingo Molnar wrote:
>
> FYI, -tip testing found that these changes break the UML build:
>
> kernel/built-in.o: In function `__up_read':
> /home/mingo/tip/arch/x86/include/asm/rwsem.h:192: undefined reference to `call_rwsem_wake'
> kernel/built-in.o: In function `__up_write':
> /home/mingo/tip/arch/x86/include/asm/rwsem.h:210: undefined reference to `call_rwsem_wake'
> kernel/built-in.o: In function `__downgrade_write':
> /home/mingo/tip/arch/x86/include/asm/rwsem.h:228: undefined reference to `call_rwsem_downgrade_wake'
> kernel/built-in.o: In function `__down_read':
> /home/mingo/tip/arch/x86/include/asm/rwsem.h:112: undefined reference to `call_rwsem_down_read_failed'
> kernel/built-in.o: In function `__down_write_nested':
> /home/mingo/tip/arch/x86/include/asm/rwsem.h:154: undefined reference to `call_rwsem_down_write_failed'
> collect2: ld returned 1 exit status

Add lib/rwsem_64.o to the UML subarch objects to fix.

LKML-Reference: <alpine.LFD.2.00.1001171023440.13231@localhost.localdomain>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86-64: support native xadd rwsem implementation
Linus Torvalds [Wed, 13 Jan 2010 02:16:42 +0000 (18:16 -0800)]
x86-64: support native xadd rwsem implementation

commit bafaecd11df15ad5b1e598adc7736afcd38ee13d upstream.

This one is much faster than the spinlock based fallback rwsem code,
with certain artifical benchmarks having shown 300%+ improvement on
threaded page faults etc.

Again, note the 32767-thread limit here. So this really does need that
whole "make rwsem_count_t be 64-bit and fix the BIAS values to match"
extension on top of it, but that is conceptually a totally independent
issue.

NOT TESTED! The original patch that this all was based on were tested by
KAMEZAWA Hiroyuki, but maybe I screwed up something when I created the
cleaned-up series, so caveat emptor..

Also note that it _may_ be a good idea to mark some more registers
clobbered on x86-64 in the inline asms instead of saving/restoring them.
They are inline functions, but they are only used in places where there
are not a lot of live registers _anyway_, so doing for example the
clobbers of %r8-%r11 in the asm wouldn't make the fast-path code any
worse, and would make the slow-path code smaller.

(Not that the slow-path really matters to that degree. Saving a few
unnecessary registers is the _least_ of our problems when we hit the slow
path. The instruction/cycle counting really only matters in the fast
path).

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <alpine.LFD.2.00.1001121810410.17145@localhost.localdomain>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86-64, rwsem: 64-bit xadd rwsem implementation
H. Peter Anvin [Mon, 18 Jan 2010 22:00:34 +0000 (14:00 -0800)]
x86-64, rwsem: 64-bit xadd rwsem implementation

commit 1838ef1d782f7527e6defe87e180598622d2d071 upstream.

For x86-64, 32767 threads really is not enough.  Change rwsem_count_t
to a signed long, so that it is 64 bits on x86-64.

This required the following changes to the assembly code:

a) %z0 doesn't work on all versions of gcc!  At least gcc 4.4.2 as
   shipped with Fedora 12 emits "ll" not "q" for 64 bits, even for
   integer operands.  Newer gccs apparently do this correctly, but
   avoid this problem by using the _ASM_ macros instead of %z.
b) 64 bits immediates are only allowed in "movq $imm,%reg"
   constructs... no others.  Change some of the constraints to "e",
   and fix the one case where we would have had to use an invalid
   immediate -- in that case, we only care about the upper half
   anyway, so just access the upper half.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <tip-bafaecd11df15ad5b1e598adc7736afcd38ee13d@git.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86: clean up rwsem type system
Linus Torvalds [Wed, 13 Jan 2010 01:57:35 +0000 (17:57 -0800)]
x86: clean up rwsem type system

commit 5d0b7235d83eefdafda300656e97d368afcafc9a upstream.

The fast version of the rwsems (the code that uses xadd) has
traditionally only worked on x86-32, and as a result it mixes different
kinds of types wildly - they just all happen to be 32-bit.  We have
"long", we have "__s32", and we have "int".

To make it work on x86-64, the types suddenly matter a lot more.  It can
be either a 32-bit or 64-bit signed type, and both work (with the caveat
that a 32-bit counter will only have 15 bits of effective write
counters, so it's limited to 32767 users).  But whatever type you
choose, it needs to be used consistently.

This makes a new 'rwsem_counter_t', that is a 32-bit signed type.  For a
64-bit type, you'd need to also update the BIAS values.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <alpine.LFD.2.00.1001121755220.17145@localhost.localdomain>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86-32: clean up rwsem inline asm statements
Linus Torvalds [Wed, 13 Jan 2010 00:21:09 +0000 (16:21 -0800)]
x86-32: clean up rwsem inline asm statements

commit 59c33fa7791e9948ba467c2b83e307a0d087ab49 upstream.

This makes gcc use the right register names and instruction operand sizes
automatically for the rwsem inline asm statements.

So instead of using "(%%eax)" to specify the memory address that is the
semaphore, we use "(%1)" or similar. And instead of forcing the operation
to always be 32-bit, we use "%z0", taking the size from the actual
semaphore data structure itself.

This doesn't actually matter on x86-32, but if we want to use the same
inline asm for x86-64, we'll need to have the compiler generate the proper
64-bit names for the registers (%rax instead of %eax), and if we want to
use a 64-bit counter too (in order to avoid the 15-bit limit on the
write counter that limits concurrent users to 32767 threads), we'll need
to be able to generate instructions with "q" accesses rather than "l".

Since this header currently isn't enabled on x86-64, none of that matters,
but we do want to use the xadd version of the semaphores rather than have
to take spinlocks to do a rwsem. The mm->mmap_sem can be heavily contended
when you have lots of threads all taking page faults, and the fallback
rwsem code that uses a spinlock performs abysmally badly in that case.

[ hpa: modified the patch to skip size suffixes entirely when they are
  redundant due to register operands. ]

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <alpine.LFD.2.00.1001121613560.17145@localhost.localdomain>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agovgaarb: fix "target=default" passing
Eugene Teo [Tue, 23 Mar 2010 02:52:13 +0000 (10:52 +0800)]
vgaarb: fix "target=default" passing

Commit 77c1ff3982c6b36961725dd19e872a1c07df7f3b fixed the userspace
pointer dereference, but introduced another bug pointed out by Eugene Teo
in RH bug #564264. Instead of comparing the point we were at in the string,
we instead compared the beginning of the string to "default".

Signed-off-by: Eugene Teo <eugeneteo@kernel.sg>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86, cacheinfo: Enable L3 CID only on AMD
Borislav Petkov [Thu, 18 Feb 2010 18:37:14 +0000 (19:37 +0100)]
x86, cacheinfo: Enable L3 CID only on AMD

commit cb19060abfdecac0d1eb2d2f0e7d6b7a3f8bc4f4 upstream.

Final stage linking can fail with

 arch/x86/built-in.o: In function `store_cache_disable':
 intel_cacheinfo.c:(.text+0xc509): undefined reference to `amd_get_nb_id'
 arch/x86/built-in.o: In function `show_cache_disable':
 intel_cacheinfo.c:(.text+0xc7d3): undefined reference to `amd_get_nb_id'

when CONFIG_CPU_SUP_AMD is not enabled because the amd_get_nb_id
helper is defined in AMD-specific code but also used in generic code
(intel_cacheinfo.c). Reorganize the L3 cache index disable code under
CONFIG_CPU_SUP_AMD since it is AMD-only anyway.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <20100218184210.GF20473@aftab>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86, cacheinfo: Remove NUMA dependency, fix for AMD Fam10h rev D1
Borislav Petkov [Thu, 4 Feb 2010 11:09:07 +0000 (12:09 +0100)]
x86, cacheinfo: Remove NUMA dependency, fix for AMD Fam10h rev D1

commit f619b3d8427eb57f0134dab75b0d217325c72411 upstream.

The show/store_cache_disable routines depend unnecessarily on NUMA's
cpu_to_node and the disabling of cache indices broke when !CONFIG_NUMA.
Remove that dependency by using a helper which is always correct.

While at it, enable L3 Cache Index disable on rev D1 Istanbuls which
sport the feature too.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <20100218184339.GG20473@aftab>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86, cacheinfo: Calculate L3 indices
Borislav Petkov [Fri, 22 Jan 2010 15:01:07 +0000 (16:01 +0100)]
x86, cacheinfo: Calculate L3 indices

commit 048a8774ca43488d78605031f11cc206d7a2682a upstream.

We need to know the valid L3 indices interval when disabling them over
/sysfs. Do that when the core is brought online and add boundary checks
to the sysfs .store attribute.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <1264172467-25155-6-git-send-email-bp@amd64.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86, cacheinfo: Add cache index disable sysfs attrs only to L3 caches
Borislav Petkov [Fri, 22 Jan 2010 15:01:06 +0000 (16:01 +0100)]
x86, cacheinfo: Add cache index disable sysfs attrs only to L3 caches

commit 897de50e08937663912c86fb12ad7f708af2386c upstream.

The cache_disable_[01] attribute in

/sys/devices/system/cpu/cpu?/cache/index[0-3]/

is enabled on all cache levels although only L3 supports it. Add it only
to the cache level that actually supports it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <1264172467-25155-5-git-send-email-bp@amd64.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agointel-agp: Switch to wbinvd_on_all_cpus
Borislav Petkov [Fri, 22 Jan 2010 15:01:04 +0000 (16:01 +0100)]
intel-agp: Switch to wbinvd_on_all_cpus

commit 48a719c238bcbb72d6da79de9c5b3b93ab472107 upstream.

Simplify if-statement while at it.

[ hpa: we need to #include <asm/smp.h> ]

Cc: Dave Jones <davej@redhat.com>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <1264172467-25155-3-git-send-email-bp@amd64.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86, cacheinfo: Fix disabling of L3 cache indices
Borislav Petkov [Fri, 22 Jan 2010 15:01:05 +0000 (16:01 +0100)]
x86, cacheinfo: Fix disabling of L3 cache indices

commit dcf39daf3d6d97f8741e82f0b9fb7554704ed2d1 upstream.

* Correct the masks used for writing the cache index disable indices.
* Do not turn off L3 scrubber - it is not necessary.
* Make sure wbinvd is executed on the same node where the L3 is.
* Check for out-of-bounds values written to the registers.
* Make show_cache_disable hex values unambiguous
* Check for Erratum #388

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <1264172467-25155-4-git-send-email-bp@amd64.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86, lib: Add wbinvd smp helpers
Borislav Petkov [Fri, 22 Jan 2010 15:01:03 +0000 (16:01 +0100)]
x86, lib: Add wbinvd smp helpers

commit a7b480e7f30b3813353ec009f10f2ac7a6669f3b upstream.

Add wbinvd_on_cpu and wbinvd_on_all_cpus stubs for executing wbinvd on a
particular CPU.

[ hpa: renamed lib/smp.c to lib/cache-smp.c ]
[ hpa: wbinvd_on_all_cpus() returns int, but wbinvd() returns
  void.  Thus, the former cannot be a macro for the latter,
  replace with an inline function. ]

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <1264172467-25155-2-git-send-email-bp@amd64.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoRevert "x86: disable IOMMUs on kernel crash"
Chris Wright [Sat, 3 Apr 2010 01:27:54 +0000 (18:27 -0700)]
Revert "x86: disable IOMMUs on kernel crash"

commit 8f9f55e83e939724490d7cde3833c4883c6d1310 upstream.

This effectively reverts commit 61d047be99757fd9b0af900d7abce9a13a337488.

Disabling the IOMMU can potetially allow DMA transactions to
complete without being translated.  Leave it enabled, and allow
crash kernel to do the IOMMU reinitialization properly.

Cc: Joerg Roedel <joerg.roedel@amd.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86/amd-iommu: enable iommu before attaching devices
Chris Wright [Sat, 3 Apr 2010 01:27:52 +0000 (18:27 -0700)]
x86/amd-iommu: enable iommu before attaching devices

commit 75f66533bc883f761a7adcab3281fe3323efbc90 upstream.

Hit another kdump problem as reported by Neil Horman.  When initializaing
the IOMMU, we attach devices to their domains before the IOMMU is
fully (re)initialized.  Attaching a device will issue some important
invalidations.  In the context of the newly kexec'd kdump kernel, the
IOMMU may have stale cached data from the original kernel.  Because we
do the attach too early, the invalidation commands are placed in the new
command buffer before the IOMMU is updated w/ that buffer.  This leaves
the stale entries in the kdump context and can renders device unusable.
Simply enable the IOMMU before we do the attach.

Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agox86/amd-iommu: Use helper function to destroy domain
Joerg Roedel [Mon, 8 Mar 2010 13:20:07 +0000 (14:20 +0100)]
x86/amd-iommu: Use helper function to destroy domain

commit 8b408fe4f853dcfa18d133aa4cf1d7546b4c3870 upstream.

In the amd_iommu_domain_destroy the protection_domain_free
function is partly reimplemented. The 'partly' is the bug
here because the domain is not deleted from the domain list.
This results in use-after-free errors and data-corruption.
Fix it by just using protection_domain_free instead.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agodrm/radeon/kms: add FireMV 2400 PCI ID.
Dave Airlie [Mon, 19 Apr 2010 07:54:31 +0000 (17:54 +1000)]
drm/radeon/kms: add FireMV 2400 PCI ID.

commit 79b9517a33a283c5d9db875c263670ed1e055f7e upstream.

This is an M24/X600 chip.

From RH# 581927

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agodrm/radeon/kms: fix rs600 tlb flush
Jerome Glisse [Fri, 16 Apr 2010 16:46:35 +0000 (18:46 +0200)]
drm/radeon/kms: fix rs600 tlb flush

commit 30f69f3fb20bd719b5e1bf879339914063d38f47 upstream.

Typo in in flush leaded to no flush of the RS600 tlb which
ultimately leaded to massive system ram corruption, with
this patch everythings seems to work properly.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agodrm/radeon/kms: fix tv dac conflict resolver
Alex Deucher [Thu, 15 Apr 2010 17:31:12 +0000 (13:31 -0400)]
drm/radeon/kms: fix tv dac conflict resolver

commit 08d075116db3592db218bfe0f554cd93c9e12505 upstream.

On systems with the tv dac shared between DVI and TV,
we can only use the dac for one of the connectors.
However, when using a digital monitor on the DVI port,
you can use the dac for the TV connector just fine.
Check the use_digital status when resolving the conflict.

Fixes fdo bug 27649, possibly others.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agodrm/radeon/kms: disable the tv encoder when tv/cv is not in use
Alex Deucher [Tue, 13 Apr 2010 15:21:59 +0000 (11:21 -0400)]
drm/radeon/kms: disable the tv encoder when tv/cv is not in use

commit d3a67a43b0460bae3e2ac14092497833344ac10d upstream.

Switching between TV and VGA caused VGA to break on some systems
since the TV encoder was left enabled when VGA was used.

fixes fdo bug 25520.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agodrm/i915: Add no_lvds entry for the Clientron U800
Stefan Bader [Mon, 29 Mar 2010 15:53:12 +0000 (17:53 +0200)]
drm/i915: Add no_lvds entry for the Clientron U800

commit 9875557ee8247c3f7390d378c027b45c7535a224 upstream.

BugLink: http://bugs.launchpad.net/ubuntu/bugs/544671
This system claims to have a LVDS but has not.

Signed-off-by: Stephane Graber <stgraber@ubuntu.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agohwmon: (sht15) Properly handle the case CONFIG_REGULATOR=n
Jean Delvare [Wed, 14 Apr 2010 14:14:08 +0000 (16:14 +0200)]
hwmon: (sht15) Properly handle the case CONFIG_REGULATOR=n

commit c7a78d2c2e2537fd24903e966f34aae50319d587 upstream.

When CONFIG_REGULATOR isn't set, regulator_get_voltage() returns 0.
Properly handle this case by not trusting the value.

Reported-by: Jerome Oufella <jerome.oufella@savoirfairelinux.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agohwmon: (sht15) Fix sht15_calc_temp interpolation function
Jerome Oufella [Wed, 14 Apr 2010 14:14:07 +0000 (16:14 +0200)]
hwmon: (sht15) Fix sht15_calc_temp interpolation function

commit 328a2c22abd08911e37fa66f1358f829cecd72e9 upstream.

I discovered two issues.
First the previous sht15_calc_temp() loop did not iterate through the
temppoints array since the (data->supply_uV > temppoints[i - 1].vdd)
test is always true in this direction.

Also the two-points linear interpolation function was returning biased
values due to a stray division by 1000 which shouldn't be there.

[JD: Also change the default value for d1 from 0 to something saner.]

Signed-off-by: Jerome Oufella <jerome.oufella@savoirfairelinux.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoALSA: usb - Fix Oops after usb-midi disconnection
Takashi Iwai [Sat, 10 Apr 2010 19:27:23 +0000 (21:27 +0200)]
ALSA: usb - Fix Oops after usb-midi disconnection

commit 29aac005ff4dc8a5f50b80f4e5c4f59b21c0fb50 upstream.

usb-midi causes sometimes Oops at snd_usbmidi_output_drain() after
disconnection.  This is due to the access to the endpoints which have
been already released at disconnection while the files are still alive.

This patch fixes the problem by checking disconnection state at
snd_usbmidi_output_drain() and by releasing urbs but keeping the
endpoint instances until really all freed.

Tested-by: Tvrtko Ursulin <tvrtko@ursulin.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoALSA: hda - add a quirk for Clevo M570U laptop
Joerg Schirottke [Thu, 15 Apr 2010 06:37:41 +0000 (08:37 +0200)]
ALSA: hda - add a quirk for Clevo M570U laptop

commit d1501ea844eefdf925f6b711875b4b2b928fddf8 upstream.

Added the matching model for Clevo laptop M570U.

Signed-off-by: Joerg Schirottke <master@kanotix.com>
Tested-by: Maximilian Gerhard <maxbox@directbox.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
14 years agoNFSv4: fix delegated locking
Trond Myklebust [Sun, 11 Apr 2010 20:48:44 +0000 (16:48 -0400)]
NFSv4: fix delegated locking

commit 0df5dd4aae211edeeeb84f7f84f6d093406d7c22 upstream.

Arnaud Giersch reports that NFSv4 locking is broken when we hold a
delegation since commit 8e469ebd6dc32cbaf620e134d79f740bf0ebab79 (NFSv4:
Don't allow posix locking against servers that don't support it).

According to Arnaud, the lock succeeds the first time he opens the file
(since we cannot do a delegated open) but then fails after we start using
delegated opens.

The following patch fixes it by ensuring that locking behaviour is
governed by a per-filesystem capability flag that is initially set, but
gets cleared if the server ever returns an OPEN without the
NFS4_OPEN_RESULT_LOCKTYPE_POSIX flag being set.

Reported-by: Arnaud Giersch <arnaud.giersch@iut-bm.univ-fcomte.fr>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>