firefly-linux-kernel-4.4.55.git
13 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 <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 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
shrink_zone().

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
invoked.

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 <hannes@cmpxchg.org>
Reported-by: Michal Hocko <mhocko@suse.cz>
Tested-by: Kent Overstreet<kent.overstreet@gmail.com>
Reported-by: Kent Overstreet <kent.overstreet@gmail.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 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 <walken@google.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 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 <walken@google.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 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) {
printk(KERN_ERR
"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 <yinghai@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 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 <soren@linux2go.dk>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Acked-by: Paul Clements <paul.clements@steeleye.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: <stable@kernel.org> [2.6.37.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 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;
 88
 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 <strakh@ispras.ru>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 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 <stigge@antcom.de>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Marc Zyngier <maz@misterjones.org>
Cc: Ben Gardner <bgardner@wabtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 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
dangerous.

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 <tj@kernel.org>
Acked-by: Roland McGrath <roland@redhat.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 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
here.

1. http://marc.info/?l=linux-fsdevel&m=129680863330185&w=2

Tested-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 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 <hooanon05@yahoo.co.jp>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Nick Piggin <npiggin@kernel.dk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 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
more.

Cc: stable@kernel.org
Cc: openipmi-developer@lists.sourceforge.net
Reviewed-by: Peter Huewe <peterhuewe@gmx.de>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 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 <serge@hallyn.com>
Reviewed-by: James Morris <jmorris@namei.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
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://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (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
  ...

13 years agoMerge branch 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
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://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6:
  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/

13 years agoMerge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
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://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6:
  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

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

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (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
  ...

13 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 <brogers@novell.com>
Signed-off-by: Olaf Kirch <okir@suse.de>
Cc: stable@kernel.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 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 <Tim.Deegan@citrix.com>
[jbeulich@novell.com: !time_after() -> time_before_eq() as suggested by Jiri Slaby]
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 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 <randy.dunlap@oracle.com>
Tested-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoMerge branch 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuil...
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://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
  deb-pkg: Fix building outside of source tree (O=...).
  deb-pkg: Use $SRCARCH for include path

13 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 <tomoya-linux@dsn.okisemi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 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 <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 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 <randy.dunlap@oracle.com>

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 <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6
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

13 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 <toshiharu-linux@dsn.okisemi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
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://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  virtio: console: Update Copyright
  virtio: console: Wake up outvq on host notifications

13 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Wed, 9 Feb 2011 19:45:21 +0000 (11:45 -0800)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  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.

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

* 'for-linus' of git://neil.brown.name/md:
  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.

13 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 <ngupta@vflare.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 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 <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 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 devel@linuxdriverproject.org list
on "Thu, 27 Jan 2011 18:52:15 -0500", "Message-ID:
<20110127235214.GA5107@thialfi.dhcp.drexel.edu>", 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"
module.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Cc: W. Trevor King <wking@drexel.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 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 <simon@fire.lp0.eu>
Cc: Tejun Heo <tj@kernel.org>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Tested-by: Chris Clayton <chris2553@googlemail.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
13 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
queue.

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.

Cc: stable@kernel.org
Signed-off-by: Justin TerAvest <teravest@google.com>
Reviewed-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
13 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=192.168.0.2 dst=192.168.1.2 sport=38925 dport=8000 src=192.168.1.2 dst=192.168.1.100 sport=8000 dport=38925 [ASSURED]
    [NEW] tcp      6 120 SYN_SENT src=192.168.0.2 dst=192.168.1.2 sport=38925 dport=8000 [UNREPLIED] src=192.168.1.2 dst=192.168.1.100 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 <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
13 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 <tomoya-linux@dsn.okisemi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 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 <tomoya-linux@dsn.okisemi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 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 <tomoya-linux@dsn.okisemi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 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
queues.

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

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 <davem@davemloft.net>
13 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 <davem@davemloft.net>
13 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:
  http://www.usb.org/developers/devclass_docs/NCM10_012011.zip
- CDC and WMC errata link:
  http://www.usb.org/developers/devclass_docs/CDC1.2_WMC1.1_012011.zip

Changes:
- 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 <alexey.orishko@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 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:
http://www.usb.org/developers/devclass_docs/NCM10_012011.zip
- CDC and WMC errata link:
http://www.usb.org/developers/devclass_docs/CDC1.2_WMC1.1_012011.zip

Signed-off-by: Alexey Orishko <alexey.orishko@stericsson.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 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 <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
13 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 <hdegoede@redhat.com>
CC: stable@kernel.org
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Hans de Goede <hdegoede@redhat.com>
13 years agoMerge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/jkirsher/net-2.6
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

13 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
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

13 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 <donald.c.skidmore@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
13 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 <donald.c.skidmore@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
13 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 <alexander.h.duyck@intel.com>
Acked-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
13 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.

CC: stable@kernel.org
Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
13 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 <emil.s.tantilov@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
13 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 <dirk.j.brandewie@intel.com>
Signed-off-by: Florian Fainelli <ffainelli@freebox.fr>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
13 years agoe1000e: tx_timeout should not increment for non-hang events
Jesse Brandeburg [Wed, 2 Feb 2011 10:19:55 +0000 (10:19 +0000)]
e1000e: tx_timeout should not increment for non-hang events

Currently the driver increments the tx_timeout counter (an error counter)
when simply resetting the part with outstanding transmit work pending.
This is an unnecessary count of an error, when all we should be doing is
just resetting the part and discarding the transmits.  With this change the
only increment of tx_timeout is when the stack calls the watchdog reset
function due to a true Tx timeout.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
13 years agoMerge branch 'batman-adv/merge' of git://git.open-mesh.org/ecsv/linux-merge
David S. Miller [Tue, 8 Feb 2011 03:54:14 +0000 (19:54 -0800)]
Merge branch 'batman-adv/merge' of git://git.open-mesh.org/ecsv/linux-merge

13 years agoFIX: md: process hangs at wait_barrier after 0->10 takeover
Krzysztof Wojcik [Fri, 4 Feb 2011 13:18:26 +0000 (14:18 +0100)]
FIX: md: process hangs at wait_barrier after 0->10 takeover

Following symptoms were observed:
1. After raid0->raid10 takeover operation we have array with 2
missing disks.
When we add disk for rebuild, recovery process starts as expected
but it does not finish- it stops at about 90%, md126_resync process
hangs in "D" state.
2. Similar behavior is when we have mounted raid0 array and we
execute takeover to raid10. After this when we try to unmount array-
it causes process umount hangs in "D"

In scenarios above processes hang at the same function- wait_barrier
in raid10.c.
Process waits in macro "wait_event_lock_irq" until the
"!conf->barrier" condition will be true.
In scenarios above it never happens.

Reason was that at the end of level_store, after calling pers->run,
we call mddev_resume. This calls pers->quiesce(mddev, 0) with
RAID10, that calls lower_barrier.
However raise_barrier hadn't been called on that 'conf' yet,
so conf->barrier becomes negative, which is bad.

This patch introduces setting conf->barrier=1 after takeover
operation. It prevents to become barrier negative after call
lower_barrier().

Signed-off-by: Krzysztof Wojcik <krzysztof.wojcik@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
13 years agoLinux 2.6.38-rc4
Linus Torvalds [Tue, 8 Feb 2011 00:03:17 +0000 (16:03 -0800)]
Linux 2.6.38-rc4

13 years agobatman-adv: Linearize fragment packets before merge
Sven Eckelmann [Sun, 6 Feb 2011 23:26:43 +0000 (23:26 +0000)]
batman-adv: Linearize fragment packets before merge

We access the data inside the skbs of two fragments directly using memmove
during the merge. The data of the skb could span over multiple skb pages. An
direct access without knowledge about the pages would lead to an invalid memory
access.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
[lindner_marek@yahoo.de: Move return from function to the end]
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
13 years agoMerge master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Mon, 7 Feb 2011 23:20:11 +0000 (15:20 -0800)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm:
  ALSA: AACI: allow writes to MAINCR to take effect
  ARM: Update mach-types
  ARM: 6652/1: ep93xx: correct the end address of the AC97 memory resource
  ARM: mxs/imx28: remove now unused clock lookup "fec.0"
  ARM: mxs: fix clock base address missing
  ARM: mxs: acknowledge gpio irq
  ARM: mach-imx/mach-mx25_3ds: Fix section type
  ARM: imx: Add VPR200 and MX51_3DS entries to uncompress.h
  ARM i.MX23: use correct register for setting the rate
  ARM i.MX23/28: remove secondary field from struct clk. It's unused
  ARM i.MX28: use correct register for setting the rate
  ARM i.MX28: fix bit operation

13 years agomd_make_request: don't touch the bio after calling make_request
Chris Mason [Tue, 8 Feb 2011 00:21:48 +0000 (19:21 -0500)]
md_make_request: don't touch the bio after calling make_request

md_make_request was calling bio_sectors() for part_stat_add
after it was calling the make_request function.  This is
bad because the make_request function can free the bio and
because the bi_size field can change around.

The fix here was suggested by Jens Axboe.  It saves the
sector count before the make_request call.  I hit this
with CONFIG_DEBUG_PAGEALLOC turned on while trying to break
his pretty fusionio card.

Cc: <stable@kernel.org>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Signed-off-by: NeilBrown <neilb@suse.de>
13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
Linus Torvalds [Mon, 7 Feb 2011 22:06:18 +0000 (14:06 -0800)]
Merge git://git./linux/kernel/git/mason/btrfs-unstable

* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (33 commits)
  Btrfs: Fix page count calculation
  btrfs: Drop __exit attribute on btrfs_exit_compress
  btrfs: cleanup error handling in btrfs_unlink_inode()
  Btrfs: exclude super blocks when we read in block groups
  Btrfs: make sure search_bitmap finds something in remove_from_bitmap
  btrfs: fix return value check of btrfs_start_transaction()
  btrfs: checking NULL or not in some functions
  Btrfs: avoid uninit variable warnings in ordered-data.c
  Btrfs: catch errors from btrfs_sync_log
  Btrfs: make shrink_delalloc a little friendlier
  Btrfs: handle no memory properly in prepare_pages
  Btrfs: do error checking in btrfs_del_csums
  Btrfs: use the global block reserve if we cannot reserve space
  Btrfs: do not release more reserved bytes to the global_block_rsv than we need
  Btrfs: fix check_path_shared so it returns the right value
  btrfs: check return value of btrfs_start_ioctl_transaction() properly
  btrfs: fix return value check of btrfs_join_transaction()
  fs/btrfs/inode.c: Add missing IS_ERR test
  btrfs: fix missing break in switch phrase
  btrfs: fix several uncheck memory allocations
  ...

13 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Mon, 7 Feb 2011 22:05:38 +0000 (14:05 -0800)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Fix hcall tracepoint recursion
  powerpc/numa: Fix bug in unmap_cpu_from_node
  powerpc/numa: Disable VPHN on dedicated processor partitions
  powerpc/numa: Add length when creating OF properties via VPHN
  powerpc/numa: Check for all VPHN changes
  powerpc/numa: Only use active VPHN count fields
  powerpc/pseries: Remove unnecessary variable initializations in numa.c
  powerpc/pseries: Fix brace placement in numa.c
  powerpc/pseries: Fix typo in VPHN comments
  powerpc: Fix some 6xx/7xxx CPU setup functions
  powerpc: Pass the right cpu_spec to ->setup_cpu() on 64-bit
  powerpc/book3e: Protect complex macro args in mmu-book3e.h
  powerpc: Fix pfn_valid() when memory starts at a non-zero address

13 years agoMerge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 7 Feb 2011 22:05:24 +0000 (14:05 -0800)]
Merge branch 'omap-fixes-for-linus' of git://git./linux/kernel/git/tmlind/linux-omap-2.6

* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  arm: omap4: panda: remove usb_nop_xceiv_register(v1)
  OMAP1: Fix non-working LCD on OMAP310
  OMAP3: Devkit8000: Change lcd power pin
  omap1: remove duplicated #include
  arm: mach-omap2: mux: free allocated memory on error exit
  arm: mach-omap2: board-rm680: fix rm680_vemmc regulator constraints
  OMAP: PM: SmartReflex: Fix possible null pointer read access
  OMAP: PM: SmartReflex: Fix possible memory leak
  arm: mach-omap2: voltage: debugfs: fix memory leak
  OMAP3: PM: fix save secure RAM to restore MPU power state
  OMAP: PM: SmartReflex: Add missing IS_ERR test

13 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 7 Feb 2011 22:04:43 +0000 (14:04 -0800)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, nx: Mark the ACPI resume trampoline code as +x

13 years agoCRED: Fix memory and refcount leaks upon security_prepare_creds() failure
Tetsuo Handa [Mon, 7 Feb 2011 13:36:16 +0000 (13:36 +0000)]
CRED: Fix memory and refcount leaks upon security_prepare_creds() failure

In prepare_kernel_cred() since 2.6.29, put_cred(new) is called without
assigning new->usage when security_prepare_creds() returned an error.  As a
result, memory for new and refcount for new->{user,group_info,tgcred} are
leaked because put_cred(new) won't call __put_cred() unless old->usage == 1.

Fix these leaks by assigning new->usage (and new->subscribers which was added
in 2.6.32) before calling security_prepare_creds().

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoCRED: Fix BUG() upon security_cred_alloc_blank() failure
Tetsuo Handa [Mon, 7 Feb 2011 13:36:10 +0000 (13:36 +0000)]
CRED: Fix BUG() upon security_cred_alloc_blank() failure

In cred_alloc_blank() since 2.6.32, abort_creds(new) is called with
new->security == NULL and new->magic == 0 when security_cred_alloc_blank()
returns an error.  As a result, BUG() will be triggered if SELinux is enabled
or CONFIG_DEBUG_CREDENTIALS=y.

If CONFIG_DEBUG_CREDENTIALS=y, BUG() is called from __invalid_creds() because
cred->magic == 0.  Failing that, BUG() is called from selinux_cred_free()
because selinux_cred_free() is not expecting cred->security == NULL.  This does
not affect smack_cred_free(), tomoyo_cred_free() or apparmor_cred_free().

Fix these bugs by

(1) Set new->magic before calling security_cred_alloc_blank().

(2) Handle null cred->security in creds_are_invalid() and selinux_cred_free().

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Mon, 7 Feb 2011 22:02:06 +0000 (14:02 -0800)]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: remove checks for ses->status == CifsExiting
  cifs: add check for kmalloc in parse_dacl
  cifs: don't send an echo request unless NegProt has been done
  cifs: enable signing flag in SMB header when server has it on
  cifs: Possible slab memory corruption while updating extended stats (repost)
  CIFS: Fix variable types in cifs_iovec_read/write (try #2)
  cifs: fix length vs. total_read confusion in cifs_demultiplex_thread

13 years agox25: possible skb leak on bad facilities
andrew hendry [Mon, 7 Feb 2011 00:08:15 +0000 (00:08 +0000)]
x25: possible skb leak on bad facilities

Originally x25_parse_facilities returned
-1 for an error
 0 meaning 0 length facilities
>0 the length of the facilities parsed.

5ef41308f94dc ("x25: Prevent crashing when parsing bad X.25 facilities") introduced more
error checking in x25_parse_facilities however used 0 to indicate bad parsing
a6331d6f9a429 ("memory corruption in X.25 facilities parsing") followed this further for
DTE facilities, again using 0 for bad parsing.

The meaning of 0 got confused in the callers.
If the facilities are messed up we can't determine where the data starts.
So patch makes all parsing errors return -1 and ensures callers close and don't use the skb further.

Reported-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agomac80211: fix the skb cloned check in the tx path
Felix Fietkau [Mon, 7 Feb 2011 11:05:00 +0000 (12:05 +0100)]
mac80211: fix the skb cloned check in the tx path

Using skb_header_cloned to check if it's safe to write to the skb is not
enough - mac80211 also touches the tailroom of the skb.
Initially this check was only used to increase a counter, however this
commit changed the code to also skip skb data reallocation if no extra
head/tailroom was needed:

commit 4cd06a344db752f513437138953af191cbe9a691
mac80211: skip unnecessary pskb_expand_head calls

It added a regression at least with iwl3945, which is fixed by this patch.

Reported-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Tested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoiwlagn: Re-enable RF_KILL interrupt when down
Don Fry [Sun, 6 Feb 2011 17:29:45 +0000 (09:29 -0800)]
iwlagn: Re-enable RF_KILL interrupt when down

With commit 554d1d027b19265c4aa3f718b3126d2b86e09a08 only one RF_KILL
interrupt will be seen by the driver when the interface is down.

Re-enable the interrupt when it occurs to see all transitions.

Signed-off-by: Don Fry <donald.h.fry@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agossb-pcmcia: Fix parsing of invariants tuples
Michael Büsch [Fri, 4 Feb 2011 22:34:45 +0000 (23:34 +0100)]
ssb-pcmcia: Fix parsing of invariants tuples

This fixes parsing of the device invariants (MAC address)
for PCMCIA SSB devices.

ssb_pcmcia_do_get_invariants expects an iv pointer as data
argument.

Tested-by: dylan cristiani <d.cristiani@idem-tech.it>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
13 years agoBtrfs: Fix page count calculation
Yan, Zheng [Tue, 18 Jan 2011 05:34:40 +0000 (13:34 +0800)]
Btrfs: Fix page count calculation

take offset of start position into account when calculating page count.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoMerge branch 'fixes'
Russell King [Mon, 7 Feb 2011 19:07:10 +0000 (19:07 +0000)]
Merge branch 'fixes'

13 years agocifs: remove checks for ses->status == CifsExiting
Jeff Layton [Mon, 7 Feb 2011 13:54:35 +0000 (08:54 -0500)]
cifs: remove checks for ses->status == CifsExiting

ses->status is never set to CifsExiting, so these checks are
always false.

Tested-by: JG <jg@cms.ac>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agoMerge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes
Russell King [Mon, 7 Feb 2011 15:15:37 +0000 (15:15 +0000)]
Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes

13 years agoALSA: AACI: allow writes to MAINCR to take effect
Russell King [Sat, 5 Feb 2011 10:41:55 +0000 (10:41 +0000)]
ALSA: AACI: allow writes to MAINCR to take effect

The AACI TRM requires the MAINCR enable bit to be held zero for two
bitclk cycles plus three apb_pclk cycles.  Use a delay of 1us to
ensure this.

Ensure that writes to MAINCR to change the addressed codec only happen
when required, and that they take effect in a similar manner to the
above, otherwise we seem to occasionally have stuck slot busy bits.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agoARM: Update mach-types
Russell King [Mon, 7 Feb 2011 08:59:29 +0000 (08:59 +0000)]
ARM: Update mach-types

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agox86, nx: Mark the ACPI resume trampoline code as +x
H. Peter Anvin [Mon, 7 Feb 2011 05:16:09 +0000 (21:16 -0800)]
x86, nx: Mark the ACPI resume trampoline code as +x

We reserve lowmem for the things that need it, like the ACPI
wakeup code, way early to guarantee availability.  This happens
before we set up the proper pagetables, so set_memory_x() has no
effect.

Until we have a better solution, use an initcall to mark the
wakeup code executable.

Originally-by: Matthieu Castet <castet.matthieu@free.fr>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Matthias Hopf <mhopf@suse.de>
Cc: rjw@sisk.pl
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
LKML-Reference: <4D4F8019.2090104@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agopowerpc: Fix hcall tracepoint recursion
Anton Blanchard [Thu, 21 Oct 2010 00:52:12 +0000 (00:52 +0000)]
powerpc: Fix hcall tracepoint recursion

Spinlocks on shared processor partitions use H_YIELD to notify the
hypervisor we are waiting on another virtual CPU. Unfortunately this means
the hcall tracepoints can recurse.

The patch below adds a percpu depth and checks it on both the entry and
exit hcall tracepoints.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: stable@kernel.org
13 years agopowerpc/numa: Fix bug in unmap_cpu_from_node
Anton Blanchard [Sat, 29 Jan 2011 12:37:16 +0000 (12:37 +0000)]
powerpc/numa: Fix bug in unmap_cpu_from_node

When converting to the new cpumask code I screwed up:

-       if (cpu_isset(cpu, numa_cpumask_lookup_table[node])) {
-               cpu_clear(cpu, numa_cpumask_lookup_table[node]);
+       if (cpumask_test_cpu(cpu, node_to_cpumask_map[node])) {
+               cpumask_set_cpu(cpu, node_to_cpumask_map[node]);

This was introduced in commit 25863de07af9 (powerpc/cpumask: Convert NUMA code
to new cpumask API)

Fix it.

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/numa: Disable VPHN on dedicated processor partitions
Anton Blanchard [Sat, 29 Jan 2011 12:35:22 +0000 (12:35 +0000)]
powerpc/numa: Disable VPHN on dedicated processor partitions

There is no need to start up the timer and monitor topology changes on a
dedicated processor partition, so disable it.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/numa: Add length when creating OF properties via VPHN
Anton Blanchard [Sat, 29 Jan 2011 12:28:04 +0000 (12:28 +0000)]
powerpc/numa: Add length when creating OF properties via VPHN

The rest of the NUMA code expects an OF associativity property with
the first cell containing the length. Without this fix all topology changes
cause us to misparse the property and put the cpu into node 0.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/numa: Check for all VPHN changes
Anton Blanchard [Sat, 29 Jan 2011 12:26:19 +0000 (12:26 +0000)]
powerpc/numa: Check for all VPHN changes

The hypervisor uses unsigned 1 byte counters to signal topology changes to
the OS. Since they can wrap we need to check for any difference, not just if
the hypervisor count is greater than the previous count.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/numa: Only use active VPHN count fields
Anton Blanchard [Sat, 29 Jan 2011 12:24:34 +0000 (12:24 +0000)]
powerpc/numa: Only use active VPHN count fields

VPHN supports up to 8 distance fields but the number of entries in
ibm,associativity-reference-points signifies how many are in use.
Don't look at all the VPHN counts, only distance_ref_points_depth
worth.

Since we already cap our distance metrics at MAX_DISTANCE_REF_POINTS,
use that to size the VPHN arrays and add a BUILD_BUG_ON to avoid it growing
larger than the VPHN maximum of 8.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/pseries: Remove unnecessary variable initializations in numa.c
Jesse Larrew [Thu, 20 Jan 2011 19:01:35 +0000 (19:01 +0000)]
powerpc/pseries: Remove unnecessary variable initializations in numa.c

Remove unnecessary variable initializations in VPHN functions.

Signed-off-by: Jesse Larrew <jlarrew@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/pseries: Fix brace placement in numa.c
Jesse Larrew [Thu, 20 Jan 2011 19:01:13 +0000 (19:01 +0000)]
powerpc/pseries: Fix brace placement in numa.c

Fix brace placement in VPHN code.

Signed-off-by: Jesse Larrew <jlarrew@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/pseries: Fix typo in VPHN comments
Jesse Larrew [Thu, 20 Jan 2011 19:00:51 +0000 (19:00 +0000)]
powerpc/pseries: Fix typo in VPHN comments

Correct a spelling error in VPHN comments in numa.c.

Signed-off-by: Jesse Larrew <jlarrew@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: Fix some 6xx/7xxx CPU setup functions
Benjamin Herrenschmidt [Thu, 20 Jan 2011 20:35:23 +0000 (20:35 +0000)]
powerpc: Fix some 6xx/7xxx CPU setup functions

Some of those functions try to adjust the CPU features, for example
to remove NAP support on some revisions. However, they seem to use
r5 as an index into the CPU table entry, which might have been right
a long time ago but no longer is. r4 is the right register to use.

This probably caused some off behaviours on some PowerMac variants
using 750cx or 7455 processor revisions.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: stable@kernel.org
13 years agopowerpc: Pass the right cpu_spec to ->setup_cpu() on 64-bit
Benjamin Herrenschmidt [Thu, 20 Jan 2011 20:36:03 +0000 (20:36 +0000)]
powerpc: Pass the right cpu_spec to ->setup_cpu() on 64-bit

When calling setup_cpu() on 64-bit, we pass a pointer to the
cputable entry we have found. This used to be fine when cur_cpu_spec
was a pointer to that entry, but nowadays, we copy the entry into
a separate variable, and we do so before we call the setup_cpu()
callback. That means that any attempt by that callback at patching
the CPU table entry (to adjust CPU features for example) will patch
the wrong table.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc/book3e: Protect complex macro args in mmu-book3e.h
Scott Wood [Thu, 27 Jan 2011 10:30:00 +0000 (10:30 +0000)]
powerpc/book3e: Protect complex macro args in mmu-book3e.h

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agopowerpc: Fix pfn_valid() when memory starts at a non-zero address
Scott Wood [Thu, 27 Jan 2011 10:31:38 +0000 (10:31 +0000)]
powerpc: Fix pfn_valid() when memory starts at a non-zero address

max_mapnr is a pfn, not an index innto mem_map[].  So don't add
ARCH_PFN_OFFSET a second time.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agoMerge branch 'ixp4xx' of git://git.kernel.org/pub/scm/linux/kernel/git/chris/linux-2.6
Linus Torvalds [Sun, 6 Feb 2011 20:05:58 +0000 (12:05 -0800)]
Merge branch 'ixp4xx' of git://git./linux/kernel/git/chris/linux-2.6

* 'ixp4xx' of git://git.kernel.org/pub/scm/linux/kernel/git/chris/linux-2.6:
  arm/ixp4xx: Rename FREQ macro to avoid collisions
  IXP4xx: Fix qmgr_release_queue() flushing unexpected queue entries.

13 years agoMerge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 6 Feb 2011 20:05:15 +0000 (12:05 -0800)]
Merge branch 'timers-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  lockdep, timer: Fix del_timer_sync() annotation
  RTC: Prevents a division by zero in kernel code.

13 years agoMerge branch 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 6 Feb 2011 20:04:49 +0000 (12:04 -0800)]
Merge branch 'irq-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  m32r: Fixup last __do_IRQ leftover
  genirq: Add missing status flags to modification mask

13 years agoMerge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 6 Feb 2011 20:04:16 +0000 (12:04 -0800)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf stat: Fix aggreate counter reading accounting
  tracing: Replace syscall_meta_data struct array with pointer array
  tracepoints: Fix section alignment using pointer array
  tracing: Replace trace_event struct array with pointer array

13 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 6 Feb 2011 20:03:10 +0000 (12:03 -0800)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86-32: Make sure the stack is set up before we use it
  x86, mtrr: Avoid MTRR reprogramming on BP during boot on UP platforms
  x86, nx: Don't force pages RW when setting NX bits

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Sun, 6 Feb 2011 20:02:42 +0000 (12:02 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: use linux/io.h to fix compile warnings
  ALSA: hda - Fix memory leaks in conexant jack arrays
  ASoC: CX20442: fix NULL pointer dereference
  ASoC: Amstrad Delta: fix const related build error
  ALSA: oxygen: fix output routing on Xonar DG
  sound: silent echo'ed messages in Makefile
  ASoC: Fix mask/val_mask confusion snd_soc_dapm_put_volsw()
  ASoC: DaVinci: fix kernel panic due to uninitialized platform_data
  ALSA: HDA: Fix microphone(s) on Lenovo Edge 13
  ASoC: Fix module refcount for auxiliary devices
  ALSA: HDA: cxt5066 - Use asus model for Asus U50F, select correct SPDIF output
  ALSA: HDA: Add a new model "asus" for Conexant 5066/205xx
  ALSA: HDA: Refactor some redundant code for Conexant 5066/205xx

13 years agobnx2x: Duplication in promisc mode
Vladislav Zolotarov [Sun, 6 Feb 2011 19:21:49 +0000 (11:21 -0800)]
bnx2x: Duplication in promisc mode

Prevent packets duplication for frames targeting FCoE L2 ring:
packets were arriving to stack from both L2 RSS and from FCoE
L2 in a promiscuous mode.

Configure FCoE L2 ring to DROP_ALL rx mode, when interface is
configured to PROMISC, and to accept only unicast frames, when
interface is configured to ALL_MULTI.

Signed-off-by: Vladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoarm/ixp4xx: Rename FREQ macro to avoid collisions
Ben Hutchings [Sat, 11 Dec 2010 20:17:54 +0000 (20:17 +0000)]
arm/ixp4xx: Rename FREQ macro to avoid collisions

FREQ is a ridiculously short name for a platform-specific macro in a
generic header, and it now conflicts with an enumeration in the
gspca/ov519 driver.

Also delete conditional reference to ixp4xx_get_board_tick_rate()
which is not defined anywhere.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
13 years agoIXP4xx: Fix qmgr_release_queue() flushing unexpected queue entries.
Krzysztof Hałasa [Mon, 3 May 2010 21:22:06 +0000 (23:22 +0200)]
IXP4xx: Fix qmgr_release_queue() flushing unexpected queue entries.

Queues should be empty when released, if not, there is a safety valve.
Make sure the queue is usable after it triggers.

Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
13 years agobtrfs: Drop __exit attribute on btrfs_exit_compress
Alexey Charkov [Wed, 2 Feb 2011 21:15:35 +0000 (21:15 +0000)]
btrfs: Drop __exit attribute on btrfs_exit_compress

As this function is called in some error paths while not
removing the module, the __exit attribute prevents the kernel
image from linking when btrfs is compiled in statically.

Signed-off-by: Alexey Charkov <alchark@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>