cascardo/linux.git
14 years agodrm/radeon/kms: make initial state of load detect property correct.
Dave Airlie [Wed, 27 Jan 2010 06:07:15 +0000 (16:07 +1000)]
drm/radeon/kms: make initial state of load detect property correct.

this was incorrect on my rs480.

Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/radeon/kms: disable HDMI audio for now on rv710/rv730
Dave Airlie [Fri, 5 Feb 2010 01:57:42 +0000 (11:57 +1000)]
drm/radeon/kms: disable HDMI audio for now on rv710/rv730

Support isn't correct yet and we are getting green tinges on the
displays.

Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/radeon/kms: don't call suspend path before cleaning up GPU
Jerome Glisse [Tue, 2 Feb 2010 10:51:45 +0000 (11:51 +0100)]
drm/radeon/kms: don't call suspend path before cleaning up GPU

In suspend path we unmap the GART table while in cleaning up
path we will unbind buffer and thus try to write to unmapped
GART leading to oops. In order to avoid this we don't call the
suspend path in cleanup path. Cleanup path is clever enough
to desactive GPU like the suspend path is doing, thus this was
redondant.

Tested on: RV370, R420, RV515, RV570, RV610, RV770 (all PCIE)

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrivers/gpu/drm/radeon/radeon_combios.c: fix warning
Andrew Morton [Tue, 2 Feb 2010 22:40:29 +0000 (14:40 -0800)]
drivers/gpu/drm/radeon/radeon_combios.c: fix warning

drivers/gpu/drm/radeon/radeon_combios.c: In function 'radeon_combios_get_lvds_info':
drivers/gpu/drm/radeon/radeon_combios.c:893: warning: comparison is always false due to limited range of data type

Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agoati_pcigart: fix printk format warning
Randy Dunlap [Tue, 2 Feb 2010 22:40:33 +0000 (14:40 -0800)]
ati_pcigart: fix printk format warning

Fix ati_pcigart printk format warning:

drivers/gpu/drm/ati_pcigart.c:115: warning: format '%Lx' expects type 'long long unsigned int', but argument 3 has type 'dma_addr_t'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/r100/kms: Emit cache flush to the end of command buffer. (v2)
Pauli Nieminen [Thu, 4 Feb 2010 17:20:53 +0000 (19:20 +0200)]
drm/r100/kms: Emit cache flush to the end of command buffer. (v2)

Cache flush is required in case CPU is accessing rendered data.

This fixes glean/readPixSanity test case and random rendering
errors in sauerbraten and warzone2100.

v2 Fix comment ordering in r100_fence_ring_emit and remove extra
   defines added in first version.

Signed-off-by: Pauli Nieminen <suokkos@gmail.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/radeon/kms: fix regression rendering issue on R6XX/R7XX
Jerome Glisse [Thu, 4 Feb 2010 19:36:39 +0000 (20:36 +0100)]
drm/radeon/kms: fix regression rendering issue on R6XX/R7XX

It seems that some R6XX/R7XX silently ignore HDP flush when
programmed through ring, this patch addback an ioctl callback
to allow R6XX/R7XX hw to perform such flush through MMIO in
order to fix a regression. For more details see:

http://bugzilla.kernel.org/show_bug.cgi?id=15186

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/radeon/kms: move blit initialization after we disabled VGA
Jerome Glisse [Thu, 4 Feb 2010 16:27:27 +0000 (17:27 +0100)]
drm/radeon/kms: move blit initialization after we disabled VGA

VGA might be overwritting VRAM and corrupt our blit shader leading
to corruption, it likely won't happen if you load fbcon right after
radeon. Thanks to Shawn Starr and Andre Maasikas for tracking down
this issue.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agoMerge master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Fri, 5 Feb 2010 00:09:01 +0000 (16:09 -0800)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: Fix wrong register in proc-arm6_7.S data abort handler
  ARM: 5909/1: ARM: Correct the FPSCR bits setting when raising exceptions
  ARM: 5904/1: ARM: Always generate the IT instruction when compiling for Thumb-2
  ARM: 5907/1: ARM: Fix the reset on the RealView PBX Development board
  mx35: add a missing comma in a pad definition
  mx25: make the FEC AHB clk secondary of the IPG
  mx25: fix time accounting
  mx25: properly initialize clocks
  mx25: remove unused mx25_clocks_init() argument
  i.MX25: implement secondary clocks for uarts and fec
  i.MX25: Allow secondary clocks in DEFINE_CLOCK
  ARM: MX3: Fixed typo in declared enum type name.
  MXC: Add AUDMUXv2 register decode to debugfs
  mx31ads: Provide an IRQ range to the WM835x on the 1133-EV1 module
  mx31ads: Provide a name for EXPIO interrupt chip
  mx31ads: Allow enable/disable of switchable supplies

14 years agoMerge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 5 Feb 2010 00:08:42 +0000 (16:08 -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:
  omap: Disable serial port autoidle by default
  omap: Fix access to already released memory in clk_debugfs_register_one()
  omap: Fix arch/arm/mach-omap2/mux.c: Off by one error
  omap: Fix 3630 mux errors
  OMAP2/3: GPMC: ensure valid clock pointer
  OMAP2/3: IRQ: ensure valid base address
  ARCH OMAP : enable ARCH_HAS_HOLES_MEMORYMODEL for OMAP
  omap: Remove old unused defines for OMAP_32KSYNCT_BASE
  omap: define _toggle_gpio_edge_triggering only for OMAP1

14 years agoMerge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
Linus Torvalds [Fri, 5 Feb 2010 00:08:15 +0000 (16:08 -0800)]
Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  NFS: Don't clobber the attribute type in nfs_update_inode()
  NFS: Fix a umount race
  NFS: Fix an Oops when truncating a file
  NFS: Ensure that we handle NFS4ERR_STALE_STATEID correctly
  NFSv4.1: Don't call nfs4_schedule_state_recovery() unnecessarily
  NFSv4: Don't allow posix locking against servers that don't support it
  NFSv4: Ensure that the NFSv4 locking can recover from stateid errors
  NFS: Avoid warnings when CONFIG_NFS_V4=n
  NFS: Make nfs_commitdata_release static
  NFS: Try to commit unstable writes in nfs_release_page()
  NFS: Fix a reference leak in nfs_wb_cancel_page()

14 years agoMerge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 5 Feb 2010 00:07:41 +0000 (16:07 -0800)]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  futex: Handle futex value corruption gracefully
  futex: Handle user space corruption gracefully
  futex_lock_pi() key refcnt fix
  softlockup: Add sched_clock_tick() to avoid kernel warning on kgdb resume

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes
Linus Torvalds [Fri, 5 Feb 2010 00:06:48 +0000 (16:06 -0800)]
Merge git://git./linux/kernel/git/steve/gfs2-2.6-fixes

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  GFS2: Extend umount wait coverage to full glock lifetime
  GFS2: Wait for unlock completion on umount

14 years agoidr: revert misallocation bug fix
Tejun Heo [Thu, 4 Feb 2010 08:57:37 +0000 (17:57 +0900)]
idr: revert misallocation bug fix

Commit 859ddf09743a8cc680af33f7259ccd0fd36bfe9d tried to fix
misallocation bug but broke full bit marking by not clearing
pa[idp->layers] and also is causing X failures due to lookup failure
in drm code.  The cause of the latter hasn't been found yet.  Revert
the fix for now.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agopktgen: Fix freezing problem
Rafael J. Wysocki [Thu, 4 Feb 2010 22:00:41 +0000 (14:00 -0800)]
pktgen: Fix freezing problem

Add missing try_to_freeze() to one of the pktgen_thread_worker() code
paths so that it doesn't block suspend/hibernation.

Fixes http://bugzilla.kernel.org/show_bug.cgi?id=15006

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-and-tested-by: Ciprian Dorin Craciun <ciprian.craciun@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoALSA: ctxfi - fix PTP address initialization
Jaroslav Kysela [Tue, 2 Feb 2010 18:58:25 +0000 (19:58 +0100)]
ALSA: ctxfi - fix PTP address initialization

After hours of debugging, I finally found the reason why some source
and runtime combination does not work. The PTP (page table pages)
address must be aligned. I am not sure how much, but alignment to
PAGE_SIZE is sufficient. Also, use ALSA's page allocation routines
to ensure proper virtual -> physical address translation.

Cc: <stable@kernel.org>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
14 years agoigb: make certain to reassign legacy interrupt vectors after reset
Alexander Duyck [Wed, 3 Feb 2010 21:59:51 +0000 (21:59 +0000)]
igb: make certain to reassign legacy interrupt vectors after reset

This change corrects an issue that will cause false hangs when using either
82575 or 82580 in legacy interrupt mode.  The issue is caused when there is
a slow traffic flow and an "ethtool -r" is executed while using legacy or
MSI interrupts.  MSI-X is not affected by this issue due to the fact that
we were already reconfiguring the vectors after reset.

If possible it would be best to push this for net-2.6 since it is resolving
a bug but if that is not possible then net-next-2.6 will be fine.

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>
14 years agodrm/i915: Fix leak of relocs along do_execbuffer error path
Chris Wilson [Sun, 31 Jan 2010 10:40:48 +0000 (10:40 +0000)]
drm/i915: Fix leak of relocs along do_execbuffer error path

Following a gpu hang, we would leak the relocation buffer. So simply
earrange the error path to always free the relocation buffer.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
14 years agodrm/i915: slow acpi_lid_open() causes flickering - V2
Thomas Meyer [Tue, 2 Feb 2010 19:09:04 +0000 (20:09 +0100)]
drm/i915: slow acpi_lid_open() causes flickering - V2

acpi_lid_open() could take up to 10ms on my computer.  Some component is
calling the drm GETCONNECTOR ioctl many times in a row.  This results in
flickering (for example, when starting a video).  Fix it by assuming an
always connected lid status.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Eric Anholt <eric@anholt.net>
14 years agodrm/i915: Disable SR when more than one pipe is enabled
David John [Wed, 27 Jan 2010 09:49:08 +0000 (15:19 +0530)]
drm/i915: Disable SR when more than one pipe is enabled

Self Refresh should be disabled on dual plane configs.  Otherwise, as
the SR watermark is not calculated for such configs, switching to non
VGA mode causes FIFO underrun and display flicker.

This fixes Korg Bug #14897.

Signed-off-by: David John <davidjon@xenontk.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: stable@kernel.org
Signed-off-by: Eric Anholt <eric@anholt.net>
14 years agoBtrfs: apply updated fallocate i_size fix
Aneesh Kumar K.V [Thu, 4 Feb 2010 16:33:03 +0000 (11:33 -0500)]
Btrfs: apply updated fallocate i_size fix

This version of the i_size fix for fallocate makes sure we only update
the i_size when the current fallocate is really operating outside of
i_size.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
14 years agoBtrfs: do not try and lookup the file extent when finishing ordered io
Josef Bacik [Tue, 2 Feb 2010 20:50:10 +0000 (20:50 +0000)]
Btrfs: do not try and lookup the file extent when finishing ordered io

When running the following fio job

[torrent]
filename=torrent-test
rw=randwrite
size=4g
filesize=4g
bs=4k
ioengine=sync

you would see long stalls where no work was being done.  That is because we were
doing all this extra work to read in the file extent outside of the transaction,
however in the random io case this ends up hurting us because the file extents
are not there to begin with.  So axe this logic, since we end up reading in the
file extent when we go to update it anyway.  This took the fio job from 11 mb/s
with several ~10 second stalls to 24 mb/s to a couple of 1-2 second stalls.

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
14 years agoBtrfs: Fix oopsen when dropping empty tree.
Yan, Zheng [Mon, 1 Feb 2010 02:41:17 +0000 (02:41 +0000)]
Btrfs: Fix oopsen when dropping empty tree.

When dropping a empty tree, walk_down_tree() skips checking
extent information for the tree root. This will triggers a
BUG_ON in walk_up_proc().

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
14 years agoBtrfs: remove BUG_ON() due to mounting bad filesystem
Miao Xie [Tue, 2 Feb 2010 08:46:44 +0000 (08:46 +0000)]
Btrfs: remove BUG_ON() due to mounting bad filesystem

Mounting a bad filesystem caused a BUG_ON(). The following is steps to
reproduce it.
 # mkfs.btrfs /dev/sda2
 # mount /dev/sda2 /mnt
 # mkfs.btrfs /dev/sda1 /dev/sda2
 (the program says that /dev/sda2 was mounted, and then exits. )
 # umount /mnt
 # mount /dev/sda1 /mnt

At the third step, mkfs.btrfs exited in the way of make filesystem. So the
initialization of the filesystem didn't finish. So the filesystem was bad, and
it caused BUG_ON() when mounting it. But BUG_ON() should be called by the wrong
code, not user's operation, so I think it is a bug of btrfs.

This patch fixes it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
14 years agoBtrfs: make error return negative in btrfs_sync_file()
Roel Kluin [Fri, 29 Jan 2010 10:42:11 +0000 (10:42 +0000)]
Btrfs: make error return negative in btrfs_sync_file()

It appears the error return should be negative

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
14 years agoBtrfs: fix race between allocate and release extent buffer.
Yan, Zheng [Thu, 4 Feb 2010 08:46:56 +0000 (08:46 +0000)]
Btrfs: fix race between allocate and release extent buffer.

Increase extent buffer's reference count while holding the lock.
Otherwise it can race with try_release_extent_buffer.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
14 years ago[libata] Call flush_dcache_page after PIO data transfers in libata-sff.c
Catalin Marinas [Thu, 4 Feb 2010 06:04:50 +0000 (01:04 -0500)]
[libata] Call flush_dcache_page after PIO data transfers in libata-sff.c

flush_dcache_page() must be called after (!ATA_TFLAG_WRITE) the
data copying to avoid D-cache aliasing with user space or I-D cache
coherency issues (when reading data from an ATA device using PIO,
the kernel dirties the D-cache but there is no flush_dcache_page()
required on Harvard architectures).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agoahci: add Acer G725 to broken suspend list
Tejun Heo [Thu, 28 Jan 2010 07:04:15 +0000 (16:04 +0900)]
ahci: add Acer G725 to broken suspend list

Acer G725 shares the same suspend problem with the HP laptops which
lose ATA devices on resume.  New firmware which fixes the problem is
already available.  Add G725 with old firmwares to the broken suspend
list.

This problem has been reported in bko#15104.

  http://bugzilla.kernel.org/show_bug.cgi?id=15104

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Jani-Matti Hätinen <jani-matti.hatinen@iki.fi>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agolibata: fix ata_id_logical_per_physical_sectors
Christoph Hellwig [Thu, 28 Jan 2010 12:30:11 +0000 (13:30 +0100)]
libata: fix ata_id_logical_per_physical_sectors

The value we get from the low byte of the ATA_ID_SECTOR_SIZE word is not not
a plain multiple, but the log of it, so fix the helper to give the correct
answer.  Without this we'll get an incorrect minimal I/O size in the block
limits VPD page for 4k sector drives.

Also change the return value of ata_id_logical_per_physical_sectors to u16
for the unlikely case of very large logical sectors.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agolibata-scsi passthru: fix bug which truncated LBA48 return values
Douglas Gilbert [Mon, 1 Feb 2010 18:11:38 +0000 (13:11 -0500)]
libata-scsi passthru: fix bug which truncated LBA48 return values

Fix assignment which overwrote SAT ATA PASS-THROUGH command EXTEND
bit setting (ATA_TFLAG_LBA48)

Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
14 years agoirda: add missing BKL in irnet_ppp ioctl
Thadeu Lima de Souza Cascardo [Mon, 1 Feb 2010 08:21:35 +0000 (08:21 +0000)]
irda: add missing BKL in irnet_ppp ioctl

One ioctl has been forgotten when the BKL was push down into irnet_ppp
ioctl function.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoirda: unbalanced lock_kernel in irnet_ppp
Thadeu Lima de Souza Cascardo [Mon, 1 Feb 2010 08:21:34 +0000 (08:21 +0000)]
irda: unbalanced lock_kernel in irnet_ppp

Add the missing unlock_kernel in one ioctl operation.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoixgbe: Fix return of invalid txq
Krishna Kumar [Wed, 3 Feb 2010 13:13:10 +0000 (13:13 +0000)]
ixgbe: Fix return of invalid txq

a developer had complained of getting lots of warnings:

"eth16 selects TX queue 98, but real number of TX queues is 64"

http://www.mail-archive.com/e1000-devel@lists.sourceforge.net/msg02200.html

As there was no follow up on that bug, I am submitting this
patch assuming that the other return points will not return
invalid txq's, and also that this fixes the bug (not tested).

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoixgbe: Fix ixgbe_tx_map error path
Anton Blanchard [Wed, 3 Feb 2010 13:12:51 +0000 (13:12 +0000)]
ixgbe: Fix ixgbe_tx_map error path

Commit e5a43549f7a58509a91b299a51337d386697b92c (ixgbe: remove
skb_dma_map/unmap calls from driver) looks to have introduced a bug in
ixgbe_tx_map. If we get an error from a PCI DMA call, we loop backwards
through count until it becomes -1 and return that.

The caller of ixgbe_tx_map expects 0 on error, so return that instead.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonetxen: protect resource cleanup by rtnl lock
Amit Kumar Salecha [Tue, 2 Feb 2010 04:16:21 +0000 (04:16 +0000)]
netxen: protect resource cleanup by rtnl lock

o context resources can be in used, while resource cleanup is in progress,
  during fw recover.
o Null pointer execption can occur in send_cmd_desc, if fw recovery
  module frees tx ring without rtnl lock.
o Same applies to ethtool register dump.

Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonetxen: fix tx timeout recovery for NX2031 chip
Amit Kumar Salecha [Tue, 2 Feb 2010 04:16:20 +0000 (04:16 +0000)]
netxen: fix tx timeout recovery for NX2031 chip

For NX2031, first try to scrub interrupt before requesting firmware
reset. Return statement was missing after scrubbbing interrupt.

Signed-off-by: Vernon Mauery <vernux@us.ibm.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoBluetooth: Enter active mode before establishing a SCO link.
Nick Pelly [Fri, 13 Nov 2009 22:16:32 +0000 (14:16 -0800)]
Bluetooth: Enter active mode before establishing a SCO link.

When in sniff mode with a long interval time (1.28s) it can take 4+ seconds
to establish a SCO link. Fix by requesting active mode before requesting
SCO connection. This improves SCO setup time to ~500ms.

Bluetooth headsets that use a long interval time, and exhibit the long
SCO connection time include Motorola H790, HX1 and H17. They have a
CSR 2.1 chipset.

Verified this behavior and fix with host Bluetooth chipsets: BCM4329 and
TI1271.

2009-10-13 14:17:46.183722 > HCI Event: Mode Change (0x14) plen 6
    status 0x00 handle 1 mode 0x02 interval 2048
    Mode: Sniff
2009-10-13 14:17:53.436285 < HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17
    handle 1 voice setting 0x0060
2009-10-13 14:17:53.445593 > HCI Event: Command Status (0x0f) plen 4
    Setup Synchronous Connection (0x01|0x0028) status 0x00 ncmd 1
2009-10-13 14:17:57.788855 > HCI Event: Synchronous Connect Complete 0x2c) plen 17
    status 0x00 handle 257 bdaddr 00:1A:0E:F1:A4:7F type eSCO
    Air mode: CVSD

Signed-off-by: Nick Pelly <npelly@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
14 years agoBluetooth: Fix memory leak in Marvell BT-over-SDIO driver
Yoichi Yuasa [Thu, 4 Feb 2010 00:55:51 +0000 (09:55 +0900)]
Bluetooth: Fix memory leak in Marvell BT-over-SDIO driver

Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
14 years agodccp: fix auto-loading of dccp(_probe)
Gerrit Renker [Tue, 2 Feb 2010 20:16:56 +0000 (20:16 +0000)]
dccp: fix auto-loading of dccp(_probe)

This fixes commit (38ff3e6bb987ec583268da8eb22628293095d43b) ("dccp_probe:
Fix module load dependencies between dccp and dccp_probe", from 15 Jan).

It fixes the construction of the first argument of try_then_request_module(),
where only valid return codes from the first argument should be returned.

What we do now is assign the result of register_jprobe() to ret, without
the side effect of the comparison.

Acked-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agodccp: fix bug in cache allocation
Gerrit Renker [Mon, 1 Feb 2010 02:12:19 +0000 (02:12 +0000)]
dccp: fix bug in cache allocation

This fixes a bug introduced in commit de4ef86cfce60d2250111f34f8a084e769f23b16
("dccp: fix dccp rmmod when kernel configured to use slub", 17 Jan): the
vsnprintf used sizeof(slab_name_fmt), which became truncated to 4 bytes, since
slab_name_fmt is now a 4-byte pointer and no longer a 32-character array.

This lead to error messages such as
 FATAL: Error inserting dccp: No buffer space available

 >> kernel: [ 1456.341501] kmem_cache_create: duplicate cache cci
generated due to the truncation after the 3rd character.

Fixed for the moment by introducing a symbolic constant. Tested to fix the bug.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agosky2: fix transmit DMA map leakage
stephen hemminger [Mon, 1 Feb 2010 13:41:47 +0000 (13:41 +0000)]
sky2: fix transmit DMA map leakage

The book keeping structure for transmit always had the flags value
cleared so transmit DMA maps were never released correctly.
Based on patch by Jarek Poplawski, problem observed by Michael Breuer.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonetlink: fix for too early rmmod
Alexey Dobriyan [Sat, 30 Jan 2010 10:05:05 +0000 (10:05 +0000)]
netlink: fix for too early rmmod

Netlink code does module autoload if protocol userspace is asking for is
not ready. However, module can dissapear right after it was autoloaded.
Example: modprobe/rmmod stress-testing and xfrm_user.ko providing NETLINK_XFRM.

netlink_create() in such situation _will_ create userspace socket and
_will_not_ pin module. Now if module was removed and we're going to call
->netlink_rcv into nothing:

BUG: unable to handle kernel paging request at ffffffffa02f842a
       ^^^^^^^^^^^^^^^^
modules are loaded near these addresses here

IP: [<ffffffffa02f842a>] 0xffffffffa02f842a
PGD 161f067 PUD 1623063 PMD baa12067 PTE 0
Oops: 0010 [#1] PREEMPT SMP DEBUG_PAGEALLOC
last sysfs file: /sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/uevent
CPU 1
Pid: 11515, comm: ip Not tainted 2.6.33-rc5-netns-00594-gaaa5728-dirty #6 P5E/P5E
RIP: 0010:[<ffffffffa02f842a>]  [<ffffffffa02f842a>] 0xffffffffa02f842a
RSP: 0018:ffff8800baa3db48  EFLAGS: 00010292
RAX: ffff8800baa3dfd8 RBX: ffff8800be353640 RCX: 0000000000000000
RDX: ffffffff81959380 RSI: ffff8800bab7f130 RDI: 0000000000000001
RBP: ffff8800baa3db58 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000011
R13: ffff8800be353640 R14: ffff8800bcdec240 R15: ffff8800bd488010
FS:  00007f93749656f0(0000) GS:ffff880002300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: ffffffffa02f842a CR3: 00000000ba82b000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process ip (pid: 11515, threadinfo ffff8800baa3c000, task ffff8800bab7eb30)
Stack:
 ffffffff813637c0 ffff8800bd488000 ffff8800baa3dba8 ffffffff8136397d
<0> 0000000000000000 ffffffff81344adc 7fffffffffffffff 0000000000000000
<0> ffff8800baa3ded8 ffff8800be353640 ffff8800bcdec240 0000000000000000
Call Trace:
 [<ffffffff813637c0>] ? netlink_unicast+0x100/0x2d0
 [<ffffffff8136397d>] netlink_unicast+0x2bd/0x2d0

netlink_unicast_kernel:
nlk->netlink_rcv(skb);

 [<ffffffff81344adc>] ? memcpy_fromiovec+0x6c/0x90
 [<ffffffff81364263>] netlink_sendmsg+0x1d3/0x2d0
 [<ffffffff8133975b>] sock_sendmsg+0xbb/0xf0
 [<ffffffff8106cdeb>] ? __lock_acquire+0x27b/0xa60
 [<ffffffff810a18c3>] ? might_fault+0x73/0xd0
 [<ffffffff810a18c3>] ? might_fault+0x73/0xd0
 [<ffffffff8106db22>] ? __lock_release+0x82/0x170
 [<ffffffff810a190e>] ? might_fault+0xbe/0xd0
 [<ffffffff810a18c3>] ? might_fault+0x73/0xd0
 [<ffffffff81344c77>] ? verify_iovec+0x47/0xd0
 [<ffffffff8133a509>] sys_sendmsg+0x1a9/0x360
 [<ffffffff813c2be5>] ? _raw_spin_unlock_irqrestore+0x65/0x70
 [<ffffffff8106aced>] ? trace_hardirqs_on+0xd/0x10
 [<ffffffff813c2bc2>] ? _raw_spin_unlock_irqrestore+0x42/0x70
 [<ffffffff81197004>] ? __up_read+0x84/0xb0
 [<ffffffff8106ac95>] ? trace_hardirqs_on_caller+0x145/0x190
 [<ffffffff813c207f>] ? trace_hardirqs_on_thunk+0x3a/0x3f
 [<ffffffff8100262b>] system_call_fastpath+0x16/0x1b
Code:  Bad RIP value.
RIP  [<ffffffffa02f842a>] 0xffffffffa02f842a
 RSP <ffff8800baa3db48>
CR2: ffffffffa02f842a

If module was quickly removed after autoloading, return -E.

Return -EPROTONOSUPPORT if module was quickly removed after autoloading.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoaf_key: fix netns ops ordering on module load/unload
Alexey Dobriyan [Sat, 30 Jan 2010 02:53:27 +0000 (02:53 +0000)]
af_key: fix netns ops ordering on module load/unload

1. After sock_register() returns, it's possible to create sockets,
   even if module still not initialized fully (blame generic module code
   for that!)
2. Consequently, pfkey_create() can be called with pfkey_net_id still not
   initialized which will BUG_ON in net_generic():
kernel BUG at include/net/netns/generic.h:43!
3. During netns shutdown, netns ops should be unregistered after
   key manager unregistered because key manager calls can be triggered
   from xfrm_user module:

    general protection fault: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
pfkey_broadcast+0x111/0x210 [af_key]
pfkey_send_notify+0x16a/0x300 [af_key]
km_state_notify+0x41/0x70
xfrm_flush_sa+0x75/0x90 [xfrm_user]
4. Unregister netns ops after socket ops just in case and for symmetry.

Reported by Luca Tettamanti.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Tested-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoocfs2/dlm: Remove BUG_ON in dlm recovery when freeing locks of a dead node
Sunil Mushran [Tue, 2 Feb 2010 01:34:58 +0000 (17:34 -0800)]
ocfs2/dlm: Remove BUG_ON in dlm recovery when freeing locks of a dead node

During recovery, the dlm frees the locks for the dead node. If it finds a
lock in a resource for the dead node, it expects that node to also have a
ref in that lock resource. If not, it BUGs.

ossbz#1175 was filed with the above BUG. Now, while it is correct that we
should be expecting the ref, I see no reason why we have to BUG. After all,
we are freeing up the lock and clearing the ref.

This patch replaces the BUG_ON with a printk(). Hopefully, that will give
us more clues next time this happens.

http://oss.oracle.com/bugzilla/show_bug.cgi?id=1175

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Acked-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agoocfs2: Plugs race between the dc thread and an unlock ast message
Sunil Mushran [Wed, 3 Feb 2010 18:16:54 +0000 (10:16 -0800)]
ocfs2: Plugs race between the dc thread and an unlock ast message

This patch plugs a race between the downconvert thread and an unlock ast message.
Specifically, after the downconvert worker has done its task, the dc thread needs
to check whether an unlock ast made the downconvert moot.

Reported-by: David Teigland <teigland@redhat.com>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Acked-by: Mark Fasheh <mfasheh@sus.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agoBluetooth: Do not call rfcomm_session_put() for RFCOMM UA on closed socket
Nick Pelly [Thu, 4 Feb 2010 00:18:36 +0000 (16:18 -0800)]
Bluetooth: Do not call rfcomm_session_put() for RFCOMM UA on closed socket

When processing a RFCOMM UA frame when the socket is closed and we were
not the RFCOMM initiator would cause rfcomm_session_put() to be called
twice during rfcomm_process_rx(). This would cause a kernel panic in
rfcomm_session_close() then.

This could be easily reproduced during disconnect with devices such as
Motorola H270 that send RFCOMM UA followed quickly by L2CAP disconnect
request. This trace for this looks like:

2009-09-21 17:22:37.788895 < ACL data: handle 1 flags 0x02 dlen 8
   L2CAP(d): cid 0x0041 len 4 [psm 3]
     RFCOMM(s): DISC: cr 0 dlci 20 pf 1 ilen 0 fcs 0x7d
2009-09-21 17:22:37.906204 > HCI Event: Number of Completed Packets (0x13) plen 5
   handle 1 packets 1
2009-09-21 17:22:37.933090 > ACL data: handle 1 flags 0x02 dlen 8
   L2CAP(d): cid 0x0040 len 4 [psm 3]
     RFCOMM(s): UA: cr 0 dlci 20 pf 1 ilen 0 fcs 0x57
2009-09-21 17:22:38.636764 < ACL data: handle 1 flags 0x02 dlen 8
   L2CAP(d): cid 0x0041 len 4 [psm 3]
     RFCOMM(s): DISC: cr 0 dlci 0 pf 1 ilen 0 fcs 0x9c
2009-09-21 17:22:38.744125 > HCI Event: Number of Completed Packets (0x13) plen 5
   handle 1 packets 1
2009-09-21 17:22:38.763687 > ACL data: handle 1 flags 0x02 dlen 8
   L2CAP(d): cid 0x0040 len 4 [psm 3]
     RFCOMM(s): UA: cr 0 dlci 0 pf 1 ilen 0 fcs 0xb6
2009-09-21 17:22:38.783554 > ACL data: handle 1 flags 0x02 dlen 12
   L2CAP(s): Disconn req: dcid 0x0040 scid 0x0041

Avoid calling rfcomm_session_put() twice by skipping this call
in rfcomm_recv_ua() if the socket is closed.

Signed-off-by: Nick Pelly <npelly@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
14 years agoMerge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
Linus Torvalds [Thu, 4 Feb 2010 00:08:50 +0000 (16:08 -0800)]
Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze

* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: fix interrupt state restore
  microblaze: Defconfig update

14 years agoMerge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Thu, 4 Feb 2010 00:08:36 +0000 (16:08 -0800)]
Merge branch 'v4l_for_linus' of git://git./linux/kernel/git/mchehab/linux-2.6

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6:
  saa7146: stop DMA before de-allocating DMA scatter/gather page buffers
  V4L/DVB: saa7134: remove stray unlock_kernel

14 years agoBluetooth: Fix sleeping function in RFCOMM within invalid context
Marcel Holtmann [Wed, 3 Feb 2010 23:52:18 +0000 (15:52 -0800)]
Bluetooth: Fix sleeping function in RFCOMM within invalid context

With the commit 9e726b17422bade75fba94e625cd35fd1353e682 the
rfcomm_session_put() gets accidentially called from a timeout
callback and results in this:

BUG: sleeping function called from invalid context at net/core/sock.c:1897
in_atomic(): 1, irqs_disabled(): 0, pid: 0, name: swapper
Pid: 0, comm: swapper Tainted: P           2.6.32 #31
Call Trace:
 <IRQ>  [<ffffffff81036455>] __might_sleep+0xf8/0xfa
 [<ffffffff8138ef1d>] lock_sock_nested+0x29/0xc4
 [<ffffffffa03921b3>] lock_sock+0xb/0xd [l2cap]
 [<ffffffffa03948e6>] l2cap_sock_shutdown+0x1c/0x76 [l2cap]
 [<ffffffff8106adea>] ? clockevents_program_event+0x75/0x7e
 [<ffffffff8106bea2>] ? tick_dev_program_event+0x37/0xa5
 [<ffffffffa0394967>] l2cap_sock_release+0x27/0x67 [l2cap]
 [<ffffffff8138c971>] sock_release+0x1a/0x67
 [<ffffffffa03d2492>] rfcomm_session_del+0x34/0x53 [rfcomm]
 [<ffffffffa03d24c5>] rfcomm_session_put+0x14/0x16 [rfcomm]
 [<ffffffffa03d28b4>] rfcomm_session_timeout+0xe/0x1a [rfcomm]
 [<ffffffff810554a8>] run_timer_softirq+0x1e2/0x29a
 [<ffffffffa03d28a6>] ? rfcomm_session_timeout+0x0/0x1a [rfcomm]
 [<ffffffff8104e0f6>] __do_softirq+0xfe/0x1c5
 [<ffffffff8100e8ce>] ? timer_interrupt+0x1a/0x21
 [<ffffffff8100cc4c>] call_softirq+0x1c/0x28
 [<ffffffff8100e05b>] do_softirq+0x33/0x6b
 [<ffffffff8104daf6>] irq_exit+0x36/0x85
 [<ffffffff8100d7a9>] do_IRQ+0xa6/0xbd
 [<ffffffff8100c493>] ret_from_intr+0x0/0xa
 <EOI>  [<ffffffff812585b3>] ? acpi_idle_enter_bm+0x269/0x294
 [<ffffffff812585a9>] ? acpi_idle_enter_bm+0x25f/0x294
 [<ffffffff81373ddc>] ? cpuidle_idle_call+0x97/0x107
 [<ffffffff8100aca0>] ? cpu_idle+0x53/0xaa
 [<ffffffff81429006>] ? rest_init+0x7a/0x7c
 [<ffffffff8177bc8c>] ? start_kernel+0x389/0x394
 [<ffffffff8177b29c>] ? x86_64_start_reservations+0xac/0xb0
 [<ffffffff8177b384>] ? x86_64_start_kernel+0xe4/0xeb

To fix this, the rfcomm_session_put() needs to be moved out of
rfcomm_session_timeout() into rfcomm_process_sessions(). In that
context it is perfectly fine to sleep and disconnect the socket.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Tested-by: David John <davidjon@xenontk.org>
14 years agoBluetooth: Fallback eSCO to SCO on error 0x1a (Unsupported Remote Feature)
Nick Pelly [Wed, 3 Feb 2010 19:42:26 +0000 (11:42 -0800)]
Bluetooth: Fallback eSCO to SCO on error 0x1a (Unsupported Remote Feature)

General Motors carkits that use LGE BT chipsets return this error code
when an eSCO is attempted, despite advertising eSCO support.

2009-08-13 14:41:39.755518 < HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17
   handle 1 voice setting 0x0060
2009-08-13 14:41:39.757563 > HCI Event: Command Status (0x0f) plen 4
   Setup Synchronous Connection (0x01|0x0028) status 0x00 ncmd 1
2009-08-13 14:41:39.789484 > HCI Event: Synchronous Connect Complete (0x2c) plen 17
   status 0x1a handle 257 bdaddr 00:1E:B2:23:5E:B3 type eSCO
   Error: Unsupported Remote Feature / Unsupported LMP Feature

Signed-off-by: Jaikumar Ganesh <jaikumar@google.com>
Signed-off-by: Nick Pelly <npelly@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
14 years agoomap: Disable serial port autoidle by default
Tony Lindgren [Mon, 1 Feb 2010 20:34:31 +0000 (12:34 -0800)]
omap: Disable serial port autoidle by default

Currently the omap serial clocks are autoidled after 5 seconds.
However, this causes lost characters on the serial ports. As this
is considered non-standard behaviour for Linux, disable the timeout.

Note that this will also cause blocking of any deeper omap sleep
states.

To enable the autoidling of the serial ports, do something like
this for each serial port:

# echo 5 > /sys/devices/platform/serial8250.0/sleep_timeout
# echo 5 > /sys/devices/platform/serial8250.1/sleep_timeout
...

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
14 years agoomap: Fix access to already released memory in clk_debugfs_register_one()
Marek Skuczynski [Sun, 31 Jan 2010 10:00:54 +0000 (10:00 +0000)]
omap: Fix access to already released memory in clk_debugfs_register_one()

I have found an access to already released memory in
clk_debugfs_register_one() function.

Signed-off-by: Marek Skuczynski <mareksk7@gmail.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
14 years agoomap: Fix arch/arm/mach-omap2/mux.c: Off by one error
Tony Lindgren [Mon, 1 Feb 2010 21:03:42 +0000 (13:03 -0800)]
omap: Fix arch/arm/mach-omap2/mux.c: Off by one error

David Binderman ran the sourceforge tool cppcheck over the source code of the
new Linux kernel 2.6.33-rc6:

[./arm/mach-omap2/mux.c:492]: (error) Buffer access out-of-bounds

13 characters + 1 digit + 1 zero byte is more than 14 characters.

Also add a comment on mode0 name length in case new omaps
start using longer names.

Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
14 years agoomap: Fix 3630 mux errors
Tony Lindgren [Mon, 1 Feb 2010 19:22:54 +0000 (11:22 -0800)]
omap: Fix 3630 mux errors

3630 has more mux signals than 34xx. The additional pins
exist in omap36xx_cbp_subset, but are not initialized
as the superset is missing these offsets. This causes
the following errors during the boot:

mux: Unknown entry offset 0x236
mux: Unknown entry offset 0x22e
mux: Unknown entry offset 0x1ec
mux: Unknown entry offset 0x1ee
mux: Unknown entry offset 0x1f4
mux: Unknown entry offset 0x1f6
mux: Unknown entry offset 0x1f8
mux: Unknown entry offset 0x1fa
mux: Unknown entry offset 0x1fc
mux: Unknown entry offset 0x22a
mux: Unknown entry offset 0x226
mux: Unknown entry offset 0x230
mux: Unknown entry offset 0x22c
mux: Unknown entry offset 0x228

Fix this by adding the missing offsets to omap3 superset.
Note that additionally the uninitialized pins need to be
skipped on 34xx.

Based on an earlier patch by Allen Pais <allen.pais@ti.com>.

Reported-by: Allen Pais <allen.pais@ti.com>
Signed-off-by: Allen Pais <allen.pais@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
14 years agoOMAP2/3: GPMC: ensure valid clock pointer
Kevin Hilman [Fri, 29 Jan 2010 22:20:06 +0000 (14:20 -0800)]
OMAP2/3: GPMC: ensure valid clock pointer

Ensure valid clock pointer during GPMC init.  Fixes compiler
warning about potential use of uninitialized variable.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
14 years agoOMAP2/3: IRQ: ensure valid base address
Kevin Hilman [Fri, 29 Jan 2010 22:20:06 +0000 (14:20 -0800)]
OMAP2/3: IRQ: ensure valid base address

Ensure valid base address during IRQ init.  Fixes compiler warning
about potential use of uninitialized variable.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
14 years agoARCH OMAP : enable ARCH_HAS_HOLES_MEMORYMODEL for OMAP
Sriram [Fri, 29 Jan 2010 22:20:05 +0000 (14:20 -0800)]
ARCH OMAP : enable ARCH_HAS_HOLES_MEMORYMODEL for OMAP

OMAP platforms(like OMAP3530) include DSP or other co-processors
for media acceleration. when carving out memory for the
accelerators we can end up creating a hole in the memory map
of sort:
<kernel memory><hole(memory for accelerator)><kernel memory>

To handle such a memory configuration ARCH_HAS_HOLES_MEMORYMODEL
has to be enabled. For further information refer discussion at:
http://www.mail-archive.com/linux-omap@vger.kernel.org/msg15262.html.

Signed-off-by: Sriramakrishnan <srk@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
14 years agoomap: Remove old unused defines for OMAP_32KSYNCT_BASE
Tony Lindgren [Fri, 29 Jan 2010 22:20:05 +0000 (14:20 -0800)]
omap: Remove old unused defines for OMAP_32KSYNCT_BASE

Remove old unused defines for OMAP_32KSYNCT_BASE

Signed-off-by: Tony Lindgren <tony@atomide.com>
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke...
Linus Torvalds [Wed, 3 Feb 2010 16:47:15 +0000 (08:47 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ryusuke/nilfs2

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: fix potential leak of dirty data on umount

14 years agoARM: Fix wrong register in proc-arm6_7.S data abort handler
Russell King [Wed, 3 Feb 2010 15:48:03 +0000 (15:48 +0000)]
ARM: Fix wrong register in proc-arm6_7.S data abort handler

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
14 years agofutex: Handle futex value corruption gracefully
Thomas Gleixner [Wed, 3 Feb 2010 08:33:05 +0000 (09:33 +0100)]
futex: Handle futex value corruption gracefully

The WARN_ON in lookup_pi_state which complains about a mismatch
between pi_state->owner->pid and the pid which we retrieved from the
user space futex is completely bogus.

The code just emits the warning and then continues despite the fact
that it detected an inconsistent state of the futex. A conveniant way
for user space to spam the syslog.

Replace the WARN_ON by a consistency check. If the values do not match
return -EINVAL and let user space deal with the mess it created.

This also fixes the missing task_pid_vnr() when we compare the
pi_state->owner pid with the futex value.

Reported-by: Jermome Marchand <jmarchan@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Darren Hart <dvhltc@us.ibm.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: <stable@kernel.org>
14 years agofutex: Handle user space corruption gracefully
Thomas Gleixner [Tue, 2 Feb 2010 10:40:27 +0000 (11:40 +0100)]
futex: Handle user space corruption gracefully

If the owner of a PI futex dies we fix up the pi_state and set
pi_state->owner to NULL. When a malicious or just sloppy programmed
user space application sets the futex value to 0 e.g. by calling
pthread_mutex_init(), then the futex can be acquired again. A new
waiter manages to enqueue itself on the pi_state w/o damage, but on
unlock the kernel dereferences pi_state->owner and oopses.

Prevent this by checking pi_state->owner in the unlock path. If
pi_state->owner is not current we know that user space manipulated the
futex value. Ignore the mess and return -EINVAL.

This catches the above case and also the case where a task hijacks the
futex by setting the tid value and then tries to unlock it.

Reported-by: Jermome Marchand <jmarchan@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Darren Hart <dvhltc@us.ibm.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: <stable@kernel.org>
14 years agofutex_lock_pi() key refcnt fix
Mikael Pettersson [Sat, 23 Jan 2010 21:36:29 +0000 (22:36 +0100)]
futex_lock_pi() key refcnt fix

This fixes a futex key reference count bug in futex_lock_pi(),
where a key's reference count is incremented twice but decremented
only once, causing the backing object to not be released.

If the futex is created in a temporary file in an ext3 file system,
this bug causes the file's inode to become an "undead" orphan,
which causes an oops from a BUG_ON() in ext3_put_super() when the
file system is unmounted. glibc's test suite is known to trigger this,
see <http://bugzilla.kernel.org/show_bug.cgi?id=14256>.

The bug is a regression from 2.6.28-git3, namely Peter Zijlstra's
38d47c1b7075bd7ec3881141bb3629da58f88dab "[PATCH] futex: rely on
get_user_pages() for shared futexes". That commit made get_futex_key()
also increment the reference count of the futex key, and updated its
callers to decrement the key's reference count before returning.
Unfortunately the normal exit path in futex_lock_pi() wasn't corrected:
the reference count is incremented by get_futex_key() and queue_lock(),
but the normal exit path only decrements once, via unqueue_me_pi().
The fix is to put_futex_key() after unqueue_me_pi(), since 2.6.31
this is easily done by 'goto out_put_key' rather than 'goto out'.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Darren Hart <dvhltc@us.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@kernel.org>
14 years agoNFS: Don't clobber the attribute type in nfs_update_inode()
Trond Myklebust [Wed, 3 Feb 2010 13:27:35 +0000 (08:27 -0500)]
NFS: Don't clobber the attribute type in nfs_update_inode()

If the NFS_ATTR_FATTR_TYPE field isn't set in fattr->valid, then we should
not set the S_IFMT part of inode->i_mode.

Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
14 years agoNFS: Fix a umount race
Trond Myklebust [Wed, 3 Feb 2010 13:27:35 +0000 (08:27 -0500)]
NFS: Fix a umount race

Ensure that we unregister the bdi before kill_anon_super() calls
ida_remove() on our device name.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
14 years agoNFS: Fix an Oops when truncating a file
Trond Myklebust [Wed, 3 Feb 2010 13:27:22 +0000 (08:27 -0500)]
NFS: Fix an Oops when truncating a file

The VM/VFS does not allow mapping->a_ops->invalidatepage() to fail.
Unfortunately, nfs_wb_page_cancel() may fail if a fatal signal occurs.
Since the NFS code assumes that the page stays mapped for as long as the
writeback is active, we can end up Oopsing (among other things).

The only safe fix here is to convert nfs_wait_on_request(), so as to make
it uninterruptible (as is already the case with wait_on_page_writeback()).

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
14 years agomicroblaze: fix interrupt state restore
Steven J. Magnani [Mon, 1 Feb 2010 12:34:45 +0000 (06:34 -0600)]
microblaze: fix interrupt state restore

Interrupts must be disabled while an interrupt state restore
(prep for interrupt return) is in progress.
Code to do this was lost in the port to the mainline kernel.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agoGFS2: Extend umount wait coverage to full glock lifetime
Steven Whitehouse [Fri, 29 Jan 2010 15:21:27 +0000 (15:21 +0000)]
GFS2: Extend umount wait coverage to full glock lifetime

Although all glocks are, by the time of the umount glock wait,
scheduled for demotion, some of them haven't made it far
enough through the process for the original set of waiting
code to wait for them.

This extends the ref count to the whole glock lifetime in order
to ensure that the waiting does catch all glocks. It does make
it a bit more invasive, but it seems the only sensible solution
at the moment.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
14 years agoGFS2: Wait for unlock completion on umount
Steven Whitehouse [Mon, 25 Jan 2010 11:20:19 +0000 (11:20 +0000)]
GFS2: Wait for unlock completion on umount

This patch adds a wait on umount between the point at which we
dispose of all glocks and the point at which we unmount the
lock protocol. This ensures that we've received all the replies
to our unlock requests before we stop the locking.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Reported-by: Fabio M. Di Nitto <fdinitto@redhat.com>
14 years agomicroblaze: Defconfig update
Michal Simek [Wed, 3 Feb 2010 09:18:20 +0000 (10:18 +0100)]
microblaze: Defconfig update

There were several changes in Microblaze defconfig that's why
is good to update defconfigs.

Signed-off-by: Michal Simek <monstr@monstr.eu>
14 years agoocfs2: Remove overzealous BUG_ON during blocked lock processing
Sunil Mushran [Tue, 2 Feb 2010 00:55:50 +0000 (16:55 -0800)]
ocfs2: Remove overzealous BUG_ON during blocked lock processing

During blocked lock processing, we should consider the possibility that the
lock is no longer blocking.

Joel Becker <joel.becker@oracle.com> assisted in fixing this issue.

Reported-by: David Teigland <teigland@redhat.com>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agoocfs2: Do not downconvert if the lock level is already compatible
Sunil Mushran [Fri, 29 Jan 2010 17:44:11 +0000 (09:44 -0800)]
ocfs2: Do not downconvert if the lock level is already compatible

During upconvert, if the master were to send a BAST, dlmglue will detect the
upconversion in process and send a cancel convert to the master. Upon receiving
the AST for the cancel convert, it will re-process the lock resource to determine
whether it needs downconverting. Say, the up was from PR to EX and the BAST was
for EX. After the cancel convert, it will need to downconvert to NL.

However, if the node was originally upconverting from NL to EX, then there would
be no reason to downconvert (assuming the same message sequence).

This patch makes dlmglue consider the possibility that the current lock level
is already compatible and that downconverting is not required.

Joel Becker <joel.becker@oracle.com> assisted in fixing this issue.

Fixes ossbz#1178
http://oss.oracle.com/bugzilla/show_bug.cgi?id=1178

Reported-by: Coly Li <coly.li@suse.de>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agoocfs2: Prevent a livelock in dlmglue
Sunil Mushran [Thu, 21 Jan 2010 18:50:03 +0000 (10:50 -0800)]
ocfs2: Prevent a livelock in dlmglue

There is possibility of a livelock in __ocfs2_cluster_lock(). If a node were
to get an ast for an upconvert request, followed immediately by a bast,
there is a small window where the fs may downconvert the lock before the
process requesting the upconvert is able to take the lock.

This patch adds a new flag to indicate that the upconvert is still in
progress and that the dc thread should not downconvert it right now.

Wengang Wang <wen.gang.wang@oracle.com> and Joel Becker
<joel.becker@oracle.com> contributed heavily to this patch.

Reported-by: David Teigland <teigland@redhat.com>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agoocfs2: Fix setting of OCFS2_LOCK_BLOCKED during bast
Wengang Wang [Thu, 21 Jan 2010 18:50:02 +0000 (10:50 -0800)]
ocfs2: Fix setting of OCFS2_LOCK_BLOCKED during bast

During bast, set the OCFS2_LOCK_BLOCKED flag only if the lock needs to
downconverted.

Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Acked-by: Sunil Mushran <sunil.mushran@oracle.com>
Acked-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agoocfs2: Use compat_ptr in reflink_arguments.
Tao Ma [Wed, 27 Jan 2010 02:21:52 +0000 (10:21 +0800)]
ocfs2: Use compat_ptr in reflink_arguments.

Although we use u64 to pass userspace pointers to the kernel
to avoid compat_ioctl, it doesn't work in some ppc platform.
So wrap them with compat_ptr and add compat_ioctl.

The detailed discussion about compat_ptr can be found in thread
http://lkml.org/lkml/2009/10/27/423.

We indeed met with a bug when testing on ppc(-EFAULT is returned
when using old_path). This patch try to fix this.
I have tested in ppc64(with 32 bit reflink) and x86_64(with i686
reflink), both works.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agoocfs2/dlm: Handle EAGAIN for compatibility - v2
Sunil Mushran [Tue, 26 Jan 2010 01:58:30 +0000 (17:58 -0800)]
ocfs2/dlm: Handle EAGAIN for compatibility - v2

Mainline commit aad1b15310b9bcd59fa81ab8f2b1513b59553ea8 made the
dlm_begin_reco_handler() return -EAGAIN instead of EAGAIN.

As this error is transmitted over the wire, we want the receiver,
dlm_send_begin_reco_message(), to understand both the older EAGAIN and
the newer -EAGAIN, to allow rolling upgrade of the cluster nodes.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agoocfs2: Add parenthesis to wrap the check for O_DIRECT.
Tao Ma [Wed, 3 Feb 2010 01:56:04 +0000 (09:56 +0800)]
ocfs2: Add parenthesis to wrap the check for O_DIRECT.

Add parenthesis to wrap the check for O_DIRECT.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agoocfs2: Only bug out when page size is larger than cluster size.
Tao Ma [Mon, 1 Feb 2010 09:05:33 +0000 (17:05 +0800)]
ocfs2: Only bug out when page size is larger than cluster size.

In CoW, we have to make sure that the page is already written
out to the disk. So we have a BUG_ON(PageDirty(page)).

In ppc platform we have pagesize=64K, so if the cs=4K, if the
file have fragmented clusters, we will map the page many times.
See this file as an example.
Tree Depth: 0   Count: 19   Next Free Rec: 14
## Offset        Clusters       Block#          Flags
0  0             4              2164864         0x2 Refcounted
1  4             2              9302792         0x2 Refcounted
...

We have to replace the extent recs one by one, so the page with index 0
will be mapped and dirtied twice.

I'd like to leave the BUG_ON there while adding a check so that in
case we meet with an error in other platforms, we can find it easily.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agoocfs2: Fix memory overflow in cow_by_page.
Tao Ma [Sat, 30 Jan 2010 15:32:19 +0000 (23:32 +0800)]
ocfs2: Fix memory overflow in cow_by_page.

In ocfs2_duplicate_clusters_by_page, we calculate map_end
by shifting page_index. But actually in case we meet with
a large offset(say in a i686 box, poff_t is only 32 bits
and page_index=2056240), we will overflow. So change the
type of page_index to loff_t.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Wed, 3 Feb 2010 02:12:22 +0000 (18:12 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  kernel/cred.c: use kmem_cache_free

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Wed, 3 Feb 2010 02:11:52 +0000 (18:11 -0800)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (23 commits)
  connector: Delete buggy notification code.
  be2net: use eq-id to calculate cev-isr reg offset
  Bluetooth: Use the control channel for raw HID reports
  Bluetooth: Add DFU driver for Atheros Bluetooth chipset AR3011
  Bluetooth: Redo checks in IRQ handler for shared IRQ support
  Bluetooth: Fix memory leak in L2CAP
  Bluetooth: Remove double free of SKB pointer in L2CAP
  cdc_ether: Partially revert "usbnet: Set link down initially ..."
  be2net: Fix memset() arg ordering.
  bonding: bond_open error return value
  ixgbe: if ixgbe_copy_dcb_cfg is going to fail learn about it early
  ixgbe: set the correct DCB bit for pg tx settings
  igbvf: fix issue w/ mapped_as_page being left set after unmap
  drivers/net: ks8851_mll ethernet network driver
  be2net: Bug fix to support newer generation of BE ASIC
  starfire: clean up properly if firmware loading fails
  mac80211: fix NULL pointer dereference when ftrace is enabled
  netfilter: ctnetlink: fix expectation mask dump
  ipv6: conntrack: Add member of user to nf_ct_frag6_queue structure
  ath9k: fix eeprom INI values override for 2GHz-only cards
  ...

14 years agopktcdvd: removing device does not remove its sysfs dir
Thadeu Lima de Souza Cascardo [Tue, 2 Feb 2010 21:44:17 +0000 (13:44 -0800)]
pktcdvd: removing device does not remove its sysfs dir

This is the counterpart to cba767175becadc5c4016cceb7bfdd2c7fe722f4
("pktcdvd: remove broken dev_t export of class devices").  Device is not
registered using dev_t, so it should not be destroyed using device_destroy
which looks up the device by dev_t.  This will fail and adding the device
again will fail with the "duplicate name" error.  This is fixed using
device_unregister instead of device_destroy.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Peter Osterlund <petero2@telia.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomemory hotplug: fix a bug on /dev/mem for 64-bit kernels
Shaohui Zheng [Tue, 2 Feb 2010 21:44:16 +0000 (13:44 -0800)]
memory hotplug: fix a bug on /dev/mem for 64-bit kernels

Newly added memory can not be accessed via /dev/mem, because we do not
update the variables high_memory, max_pfn and max_low_pfn.

Add a function update_end_of_memory_vars() to update these variables for
64-bit kernels.

[akpm@linux-foundation.org: simplify comment]
Signed-off-by: Shaohui Zheng <shaohui.zheng@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Li Haicheng <haicheng.li@intel.com>
Reviewed-by: Wu Fengguang <fengguang.wu@intel.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agofault injection: correct function names in documentation
Anton Blanchard [Tue, 2 Feb 2010 21:44:15 +0000 (13:44 -0800)]
fault injection: correct function names in documentation

init_fault_attr_entries() should be init_fault_attr_dentries().

cleanup_fault_attr_entries() should be cleanup_fault_attr_dentries().

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agohugetlb: fix section mismatches
Jeff Mahoney [Tue, 2 Feb 2010 21:44:14 +0000 (13:44 -0800)]
hugetlb: fix section mismatches

hugetlb_sysfs_add_hstate is called by hugetlb_register_node directly
during init and also indirectly via sysfs after init.

This patch removes the __init tag from hugetlb_sysfs_add_hstate.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agouartlite: fix crash when using as console
Richard Röjfors [Tue, 2 Feb 2010 21:44:12 +0000 (13:44 -0800)]
uartlite: fix crash when using as console

Move the ulite_console_setup to the .devinit section since it might be
called on probe, which is in devinit.  Fixes the crash below where the
uartlite hw is probed after the .init section is freed from the kernel.

uartlite: ttyUL0 at MMIO 0xc8000100 (irq = 30) is a uartlite
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<c176720e>] ulite_console_setup+0x6f/0xa8
*pdpt = 0000000036fb0001 *pde = 0000000000000000
Oops: 0000 [#1] PREEMPT SMP
last sysfs file: /sys/devices/pci0000:00/0000:00:1f.1/host0/uevent
Modules linked in: puffin(+) serio_raw

Pid: 151, comm: modprobe Not tainted (2.6.31.5-1.0.b1-b1 #1) POULSBO
EIP: 0060:[<c176720e>] EFLAGS: 00010246 CPU: 0
EIP is at ulite_console_setup+0x6f/0xa8
EAX: c16ec824 EBX: c16ec824 ECX: c176719f EDX: 00000000
ESI: 00000000 EDI: c17b42c4 EBP: f6fd1cf0 ESP: f6fd1cd8
 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process modprobe (pid: 151, ti=f6fd0000 task=f6fa1020 task.ti=f6fd0000)
Stack:
 c1031f51 00000000 00000000 00000246 c182237c f7742000 f6fd1d5c c11fd316
<0> c16ec85c f77420d4 0000001e 00000000 00000000 c1633e78 4f494d4d 63783020
<0> 30303038 00303031 f6fd1d3c c10e0786 f6fd1d48 00000000 f6fd1d48 00000000
Call Trace:
 [<c1031f51>] ? register_console+0xf6/0x1fc
 [<c11fd316>] ? uart_add_one_port+0x237/0x2bb
 [<c10e0786>] ? sysfs_add_one+0x13/0xd3
 [<c10e142f>] ? sysfs_do_create_link+0xba/0xfc
 [<c146f200>] ? ulite_probe+0x198/0x1eb
 [<c12064ee>] ? platform_drv_probe+0xc/0xe
 [<c120597b>] ? driver_probe_device+0x79/0x105
 [<c1205a8e>] ? __device_attach+0x28/0x30
 [<c120511f>] ? bus_for_each_drv+0x3d/0x67
 [<c1205af9>] ? device_attach+0x44/0x58
 [<c1205a66>] ? __device_attach+0x0/0x30
 [<c1204fb8>] ? bus_probe_device+0x1f/0x34
 [<c1203e68>] ? device_add+0x385/0x4c0
 [<c148491f>] ? _write_unlock+0x8/0x1f
 [<c1206aac>] ? platform_device_add+0xd9/0x11c
 [<c120c685>] ? mfd_add_devices+0x165/0x1bc
 [<f831b378>] ? puffin_probe+0x2d0/0x390 [puffin]
 [<c11a08ef>] ? pci_match_device+0xa0/0xa7
 [<c11a07bc>] ? local_pci_probe+0xe/0x10
 [<c11a11db>] ? pci_device_probe+0x43/0x66
 [<c120597b>] ? driver_probe_device+0x79/0x105
 [<c1205a4a>] ? __driver_attach+0x43/0x5f
 [<c120535d>] ? bus_for_each_dev+0x3d/0x67
 [<c1205852>] ? driver_attach+0x14/0x16
 [<c1205a07>] ? __driver_attach+0x0/0x5f
 [<c1204dea>] ? bus_add_driver+0xf9/0x220
 [<c1205c8f>] ? driver_register+0x8b/0xeb
 [<c11a1518>] ? __pci_register_driver+0x43/0x9f
 [<c10477ef>] ? __blocking_notifier_call_chain+0x40/0x4c
 [<f831f000>] ? puffin_init+0x0/0x48 [puffin]
 [<f831f017>] ? puffin_init+0x17/0x48 [puffin]
 [<c1001139>] ? do_one_initcall+0x4c/0x131
 [<c105607b>] ? sys_init_module+0xa7/0x1b7
 [<c1002a61>] ? syscall_call+0x7/0xb
 Code: 6e 74 00 00 00 92 33 00 00 18 00 0e 01 73 79 6e 63 65 2d 72 65 67 69 73 74 72 79 0c 00 49 32
00 00 14 00 09 01 61 6c 73 61 2d 69 <6e> 66 6f 00 00 00 42 37 00 00 10 00 07 01 6b 69 6c 6c 61 6c 6c
EIP: [<c176720e>] ulite_console_setup+0x6f/0xa8 SS:ESP 0068:f6fd1cd8
CR2: 0000000000000000

Signed-off-by: Richard Röjfors <richard.rojfors@pelagicore.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoimxfb: correct location of callbacks in suspend and resume
Uwe Kleine-König [Tue, 2 Feb 2010 21:44:10 +0000 (13:44 -0800)]
imxfb: correct location of callbacks in suspend and resume

The probe function passes a pointer to a struct fb_info to
platform_set_drvdata(), so don't interpret the return value of
platform_get_drvdata() as a pointer to struct imxfb_info.

The original imxfb_info *fbi backlight_power was NULL but in imxfb_suspend
it was 4 resulting in an oops as imxfb_suspend calls
imxfb_disable_controller(fbi) which in turn has

if (fbi->backlight_power)
fbi->backlight_power(0);

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sascha Hauer <kernel@pengutronix.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agocgroups: fix to return errno in a failure path
Li Zefan [Tue, 2 Feb 2010 21:44:10 +0000 (13:44 -0800)]
cgroups: fix to return errno in a failure path

In cgroup_create(), if alloc_css_id() returns failure, the errno is not
propagated to userspace, so mkdir will fail silently.

To trigger this bug, we mount blkio (or memory subsystem), and create more
then 65534 cgroups.  (The number of cgroups is limited to 65535 if a
subsystem has use_id == 1)

 # mount -t cgroup -o blkio xxx /mnt
 # for ((i = 0; i < 65534; i++)); do mkdir /mnt/$i; done
 # mkdir /mnt/65534
 (should return ENOSPC)
 #

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Acked-by: Paul Menage <menage@google.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomarkup_oops.pl: fix $func_offset error with x86_64
Hui Zhu [Tue, 2 Feb 2010 21:44:09 +0000 (13:44 -0800)]
markup_oops.pl: fix $func_offset error with x86_64

When I use markup_oops.pl parse a x8664 oops, I got:

objdump: --start-address: bad number: NaN
No matching code found
This is because:
main::(./m.pl:228): open(FILE, "objdump -dS --adjust-vma=$vmaoffset --start-address=$decodestart --stop-address=$decodestop $filename |") || die "Cannot start objdump";
  DB<3> p $decodestart
NaN

This NaN is from:
main::(./m.pl:176): my $decodestart = Math::BigInt->from_hex("0x$target") - Math::BigInt->from_hex("0x$func_offset");
  DB<2> p $func_offset
0x175

There is already a "0x" in $func_offset, another 0x makes it a NaN.

The $func_offset is from line:

if ($line =~ /RIP: 0010:\[\<[0-9a-f]+\>\]  \[\<[0-9a-f]+\>\] ([a-zA-Z0-9\_]+)\+(0x[0-9a-f]+)\/0x[a-f0-9]/) {
$function = $1;
$func_offset = $2;
}

I make a patch to change "(0x[0-9a-f]+)\/0x[a-f0-9]/)" to "0x([0-9a-f]+)\/0x[a-f0-9]/)".

Signed-off-by: Hui Zhu <teawater@gmail.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoget_maintainer.pl: teach git log to use --no-color
Richard Kennedy [Tue, 2 Feb 2010 21:44:07 +0000 (13:44 -0800)]
get_maintainer.pl: teach git log to use --no-color

When git has been set to always use color in .gitconfig then I get the
warning message

        Bad divisor in main::vcs_assign: 0

This is caused by vcs_file_signoffs not matching any commits due to the
pattern not understand the colour codes.  Fix this by telling git log to
never use colour.

Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodevmem: fix kmem write bug on memory holes
Wu Fengguang [Tue, 2 Feb 2010 21:44:06 +0000 (13:44 -0800)]
devmem: fix kmem write bug on memory holes

write_kmem() used to assume vwrite() always return the full buffer length.
However now vwrite() could return 0 to indicate memory hole.  This
creates a bug that "buf" is not advanced accordingly.

Fix it to simply ignore the return value, hence the memory hole.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Tejun Heo <tj@kernel.org>
Cc: Nick Piggin <npiggin@suse.de>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodevmem: check vmalloc address on kmem read/write
KAMEZAWA Hiroyuki [Tue, 2 Feb 2010 21:44:05 +0000 (13:44 -0800)]
devmem: check vmalloc address on kmem read/write

Otherwise vmalloc_to_page() will BUG().

This also makes the kmem read/write implementation aligned with mem(4):
"References to nonexistent locations cause errors to be returned." Here we
return -ENXIO (inspired by Hugh) if no bytes have been transfered to/from
user space, otherwise return partial read/write results.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomm: flush dcache before writing into page to avoid alias
anfei zhou [Tue, 2 Feb 2010 21:44:02 +0000 (13:44 -0800)]
mm: flush dcache before writing into page to avoid alias

The cache alias problem will happen if the changes of user shared mapping
is not flushed before copying, then user and kernel mapping may be mapped
into two different cache line, it is impossible to guarantee the coherence
after iov_iter_copy_from_user_atomic.  So the right steps should be:

flush_dcache_page(page);
kmap_atomic(page);
write to page;
kunmap_atomic(page);
flush_dcache_page(page);

More precisely, we might create two new APIs flush_dcache_user_page and
flush_dcache_kern_page to replace the two flush_dcache_page accordingly.

Here is a snippet tested on omap2430 with VIPT cache, and I think it is
not ARM-specific:

int val = 0x11111111;
fd = open("abc", O_RDWR);
addr = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
*(addr+0) = 0x44444444;
tmp = *(addr+0);
*(addr+1) = 0x77777777;
write(fd, &val, sizeof(int));
close(fd);

The results are not always 0x11111111 0x77777777 at the beginning as expected.  Sometimes we see 0x44444444 0x77777777.

Signed-off-by: Anfei <anfei.zhou@gmail.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: <linux-arch@vger.kernel.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agokfifo: fix kernel-doc notation
Randy Dunlap [Tue, 2 Feb 2010 21:44:01 +0000 (13:44 -0800)]
kfifo: fix kernel-doc notation

Fix kfifo kernel-doc warnings:

Warning(kernel/kfifo.c:361): No description found for parameter 'total'
Warning(kernel/kfifo.c:402): bad line:  @ @lenout: pointer to output variable with copied data
Warning(kernel/kfifo.c:412): No description found for parameter 'lenout'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agortc-fm3130: add missing braces
Sergey Matyukevich [Tue, 2 Feb 2010 21:43:59 +0000 (13:43 -0800)]
rtc-fm3130: add missing braces

Add missing braces for multiline 'if' statements in fm3130_probe.

Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: Sergey Lapin <slapin@ossfans.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomx3fb: some debug and initialisation fixes
Alberto Panizzo [Tue, 2 Feb 2010 21:43:59 +0000 (13:43 -0800)]
mx3fb: some debug and initialisation fixes

Fix the kernel oops when dev_dbg is called with mx3_fbi->txd == NULL

Fix the late initialisation of mx3fb->backlight_level.  If not, in the
chain of function started by init_fb_chan(), in __blank() call
sdc_set_brightness(mx3fb, mx3fb->backlight_level) that will shut down the
CONTRAST PWM output.

Signed-off-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski <at> gmx.de>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoidr: fix a critical misallocation bug
Tejun Heo [Tue, 2 Feb 2010 21:43:58 +0000 (13:43 -0800)]
idr: fix a critical misallocation bug

Eric Paris located a bug in idr.  With IDR_BITS of 6, it grows to three
layers when id 4096 is first allocated.  When that happens, idr wraps
incorrectly and searches the idr array ignoring the high bits.  The
following test code from Eric demonstrates the bug nicely.

#include <linux/idr.h>
#include <linux/kernel.h>
#include <linux/module.h>

static DEFINE_IDR(test_idr);

int init_module(void)
{
int ret, forty95, forty96;
void *addr;

/* add 2 entries both with 4095 as the start address */
again1:
if (!idr_pre_get(&test_idr, GFP_KERNEL))
return -ENOMEM;
ret = idr_get_new_above(&test_idr, (void *)4095, 4095, &forty95);
if (ret) {
if (ret == -EAGAIN)
goto again1;
return ret;
}
if (forty95 != 4095)
printk(KERN_ERR "hmmm, forty95=%d\n", forty95);

again2:
if (!idr_pre_get(&test_idr, GFP_KERNEL))
return -ENOMEM;
ret = idr_get_new_above(&test_idr, (void *)4096, 4095, &forty96);
if (ret) {
if (ret == -EAGAIN)
goto again2;
return ret;
}
if (forty96 != 4096)
printk(KERN_ERR "hmmm, forty96=%d\n", forty96);

/* try to find the 2 entries, noticing that 4096 broke */
addr = idr_find(&test_idr, forty95);
if ((int)addr != forty95)
printk(KERN_ERR "hmmm, after find forty95=%d addr=%d\n", forty95, (int)addr);
addr = idr_find(&test_idr, forty96);
if ((int)addr != forty96)
printk(KERN_ERR "hmmm, after find forty96=%d addr=%d\n", forty96, (int)addr);
/* really weird, the entry which should be at 4096 is actually at 0!! */
addr = idr_find(&test_idr, 0);
if ((int)addr)
printk(KERN_ERR "found an entry at id=0 for addr=%d\n", (int)addr);

idr_remove(&test_idr, forty95);
idr_remove(&test_idr, forty96);

return 0;
}

void cleanup_module(void)
{
}

MODULE_AUTHOR("Eric Paris <eparis@redhat.com>");
MODULE_DESCRIPTION("Simple idr test");
MODULE_LICENSE("GPL");

This happens because when sub_alloc() back tracks it doesn't always do it
step-by-step while the over-the-limit detection assumes step-by-step
backtracking.  The logic in sub_alloc() looks like the following.

  restart:
    clear pa[top level + 1] for end cond detection
    l = top level
    while (true) {
search for empty slot at this level
if (not found) {
    push id to the next possible value
    l++
A:     if (pa[l] is clear)
        failed, return asking caller to grow the tree
    if (going up 1 level gives more slots to search)
        continue the while loop above with the incremented l
    else
C:         goto restart
}
adjust id accordingly to the found slot
if (l == 0)
    return found id;
create lower level if not there yet
record pa[l] and l--
    }

Test A is the fail exit condition but this assumes that failure is
propagated upwared one level at a time but the B optimization path breaks
the assumption and restarts the whole thing with a start value which is
above the possible limit with the current layers.  sub_alloc() assumes the
start id value is inside the limit when called and test A is the only exit
condition check, so it ends up searching for empty slot while ignoring
high set bit.

So, for 4095->4096 test, level0 search fails but pa[1] contains a valid
pointer.  However, going up 1 level wouldn't give any more empty slot so
it takes C and when the whole thing restarts nobody notices the high bit
set beyond the top level.

This patch fixes the bug by changing the fail exit condition check to full
id limit check.

Based-on-patch-from: Eric Paris <eparis@redhat.com>
Reported-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoconnector: Delete buggy notification code.
Evgeniy Polyakov [Tue, 2 Feb 2010 23:58:48 +0000 (15:58 -0800)]
connector: Delete buggy notification code.

On Tue, Feb 02, 2010 at 02:57:14PM -0800, Greg KH (gregkh@suse.de) wrote:
> > There are at least two ways to fix it: using a big cannon and a small
> > one. The former way is to disable notification registration, since it is
> > not used by anyone at all. Second way is to check whether calling
> > process is root and its destination group is -1 (kind of priveledged
> > one) before command is dispatched to workqueue.
>
> Well if no one is using it, removing it makes the most sense, right?
>
> No objection from me, care to make up a patch either way for this?

Getting it is not used, let's drop support for notifications about
(un)registered events from connector.
Another option was to check credentials on receiving, but we can always
restore it without bugs if needed, but genetlink has a wider code base
and none complained, that userspace can not get notification when some
other clients were (un)registered.

Kudos for Sebastian Krahmer <krahmer@suse.de>, who found a bug in the
code.

Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agokernel/cred.c: use kmem_cache_free
Julia Lawall [Tue, 2 Feb 2010 22:31:36 +0000 (09:31 +1100)]
kernel/cred.c: use kmem_cache_free

Free memory allocated using kmem_cache_zalloc using kmem_cache_free rather
than kfree.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,E,c;
@@

 x = \(kmem_cache_alloc\|kmem_cache_zalloc\|kmem_cache_alloc_node\)(c,...)
 ... when != x = E
     when != &x
?-kfree(x)
+kmem_cache_free(c,x)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: David Howells <dhowells@redhat.com>
Cc: James Morris <jmorris@namei.org>
Cc: Steve Dickson <steved@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Morris <jmorris@namei.org>
14 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Tue, 2 Feb 2010 20:54:37 +0000 (12:54 -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:
  cfq-iosched: Do not idle on async queues
  blk-cgroup: Fix potential deadlock in blk-cgroup
  block: fix bugs in bio-integrity mempool usage
  block: fix bio_add_page for non trivial merge_bvec_fn case
  drbd: null dereference bug
  drbd: fix max_segment_size initialization