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2010-02-05x86: Merge io.hBrian Gerst
io_32.h and io_64.h are now identical. Merge them into io.h. Signed-off-by: Brian Gerst <brgerst@gmail.com> LKML-Reference: <1265380629-3212-8-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-02-05x86: Simplify flush_write_buffers()Brian Gerst
Always make it an inline instead of using a macro for the no-op case. Signed-off-by: Brian Gerst <brgerst@gmail.com> LKML-Reference: <1265380629-3212-7-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-02-05x86: Clean up mem*io functions.Brian Gerst
Iomem has no special significance on x86. Use the standard mem* functions instead of trying to call other versions. Some fixups are needed to match the function prototypes. Signed-off-by: Brian Gerst <brgerst@gmail.com> LKML-Reference: <1265380629-3212-6-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-02-05x86-64: Use BUILDIO in io_64.hBrian Gerst
Copied from io_32.h. Signed-off-by: Brian Gerst <brgerst@gmail.com> LKML-Reference: <1265380629-3212-5-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-02-05x86-64: Reorganize io_64.hBrian Gerst
Make it more similar to io_32.h. No real code changes. Signed-off-by: Brian Gerst <brgerst@gmail.com> LKML-Reference: <1265380629-3212-4-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-02-05x86-32: Remove _local variants of in/out from io_32.hBrian Gerst
These were leftover from the numaq support that was removed in commit 1fba38703d0ce8a5ff0fad9df3eccc6b55cf2cfb. Signed-off-by: Brian Gerst <brgerst@gmail.com> LKML-Reference: <1265380629-3212-3-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-02-05x86-32: Move XQUAD definitions to numaq.hBrian Gerst
The XQUAD stuff is part of the NUMAQ architecture, so move it there. Signed-off-by: Brian Gerst <brgerst@gmail.com> LKML-Reference: <1265380629-3212-2-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-02-05Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: [libata] Call flush_dcache_page after PIO data transfers in libata-sff.c ahci: add Acer G725 to broken suspend list libata: fix ata_id_logical_per_physical_sectors libata-scsi passthru: fix bug which truncated LBA48 return values
2010-02-05CS5536: apply pci quirk for BIOS SMBUS bugAndres Salomon
The new cs5535-* drivers use PCI header config info rather than MSRs to determine the memory region to use for things like GPIOs and MFGPTs. As anticipated, we've run into a buggy BIOS: [ 0.081818] pci 0000:00:14.0: reg 10: [io 0x6000-0x7fff] [ 0.081906] pci 0000:00:14.0: reg 14: [io 0x6100-0x61ff] [ 0.082015] pci 0000:00:14.0: reg 18: [io 0x6200-0x63ff] [ 0.082917] pci 0000:00:14.2: reg 20: [io 0xe000-0xe00f] [ 0.083551] pci 0000:00:15.0: reg 10: [mem 0xa0010000-0xa0010fff] [ 0.084436] pci 0000:00:15.1: reg 10: [mem 0xa0011000-0xa0011fff] [ 0.088816] PCI: pci_cache_line_size set to 32 bytes [ 0.088938] pci 0000:00:14.0: address space collision: [io 0x6100-0x61ff] already in use [ 0.089052] pci 0000:00:14.0: can't reserve [io 0x6100-0x61ff] This is a Soekris board, and its BIOS sets the size of the PCI ISA bridge device's BAR0 to 8k. In reality, it should be 8 bytes (BAR0 is used for SMBus stuff). This quirk checks for an incorrect size, and resets it accordingly. Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Tested-by: Leigh Porter <leigh@leighporter.org> Tested-by: Jens Rottmann <JRottmann@LiPPERTEmbedded.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-02-05percpu: add __percpu for sparseStephen Rothwell
This is to make the annotation of percpu variables during the next merge window less painfull. Extracted from a patch by Rusty Russell. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-02-05Merge branch 'drm-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/radeon/kms: fix r300 vram width calculations drm/radeon/kms: rs400/480 MC setup is different than r300. drm/radeon/kms: make initial state of load detect property correct. drm/radeon/kms: disable HDMI audio for now on rv710/rv730 drm/radeon/kms: don't call suspend path before cleaning up GPU drivers/gpu/drm/radeon/radeon_combios.c: fix warning ati_pcigart: fix printk format warning drm/r100/kms: Emit cache flush to the end of command buffer. (v2) drm/radeon/kms: fix regression rendering issue on R6XX/R7XX drm/radeon/kms: move blit initialization after we disabled VGA
2010-02-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: apply updated fallocate i_size fix Btrfs: do not try and lookup the file extent when finishing ordered io Btrfs: Fix oopsen when dropping empty tree. Btrfs: remove BUG_ON() due to mounting bad filesystem Btrfs: make error return negative in btrfs_sync_file() Btrfs: fix race between allocate and release extent buffer.
2010-02-05drm/radeon/kms: fix r300 vram width calculationsDave Airlie
This was incorrect according to the docs and the UMS driver does it like this. Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-05drm/radeon/kms: rs400/480 MC setup is different than r300.Dave Airlie
Boot testing on my rs480 laptop found the MC idle never happened on startup, a quick check with AMD found the idle bit is in a different place on the rs4xx than r300. Implement a new rs400 mc idle function to fix this. Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-05drm/radeon/kms: make initial state of load detect property correct.Dave Airlie
this was incorrect on my rs480. Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-05drm/radeon/kms: disable HDMI audio for now on rv710/rv730Dave Airlie
Support isn't correct yet and we are getting green tinges on the displays. Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-02-05drm/radeon/kms: don't call suspend path before cleaning up GPUJerome Glisse
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>
2010-02-05drivers/gpu/drm/radeon/radeon_combios.c: fix warningAndrew Morton
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>
2010-02-05ati_pcigart: fix printk format warningRandy Dunlap
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>
2010-02-05drm/r100/kms: Emit cache flush to the end of command buffer. (v2)Pauli Nieminen
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>
2010-02-05drm/radeon/kms: fix regression rendering issue on R6XX/R7XXJerome Glisse
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>
2010-02-05drm/radeon/kms: move blit initialization after we disabled VGAJerome Glisse
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>
2010-02-04Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* 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
2010-02-04Merge branch 'omap-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/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
2010-02-04Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds
* '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()
2010-02-04Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/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
2010-02-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixesLinus Torvalds
* 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
2010-02-04idr: revert misallocation bug fixTejun Heo
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>
2010-02-04Btrfs: apply updated fallocate i_size fixAneesh Kumar K.V
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>
2010-02-04Btrfs: do not try and lookup the file extent when finishing ordered ioJosef Bacik
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>
2010-02-04Btrfs: Fix oopsen when dropping empty tree.Yan, Zheng
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>
2010-02-04Btrfs: remove BUG_ON() due to mounting bad filesystemMiao Xie
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>
2010-02-04Btrfs: make error return negative in btrfs_sync_file()Roel Kluin
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>
2010-02-04Btrfs: fix race between allocate and release extent buffer.Yan, Zheng
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>
2010-02-04[libata] Call flush_dcache_page after PIO data transfers in libata-sff.cCatalin Marinas
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>
2010-02-04ahci: add Acer G725 to broken suspend listTejun Heo
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>
2010-02-04libata: fix ata_id_logical_per_physical_sectorsChristoph Hellwig
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>
2010-02-04libata-scsi passthru: fix bug which truncated LBA48 return valuesDouglas Gilbert
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>
2010-02-03Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: fix interrupt state restore microblaze: Defconfig update
2010-02-03Merge branch 'v4l_for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/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
2010-02-03omap: Disable serial port autoidle by defaultTony Lindgren
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>
2010-02-03omap: Fix access to already released memory in clk_debugfs_register_one()Marek Skuczynski
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>
2010-02-03omap: Fix arch/arm/mach-omap2/mux.c: Off by one errorTony Lindgren
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>
2010-02-03omap: Fix 3630 mux errorsTony Lindgren
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>
2010-02-03OMAP2/3: GPMC: ensure valid clock pointerKevin Hilman
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>
2010-02-03OMAP2/3: IRQ: ensure valid base addressKevin Hilman
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>
2010-02-03ARCH OMAP : enable ARCH_HAS_HOLES_MEMORYMODEL for OMAPSriram
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>
2010-02-03omap: Remove old unused defines for OMAP_32KSYNCT_BASETony Lindgren
Remove old unused defines for OMAP_32KSYNCT_BASE Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-03Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/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
2010-02-03ARM: Fix wrong register in proc-arm6_7.S data abort handlerRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>