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2011-09-14cris: fix a build error in drivers/tty/serial/crisv10.cWANG Cong
Fix these errors: drivers/tty/serial/crisv10.c:4453: error: 'if_ser0' undeclared (first use in this function): 2 errors in 2 logs drivers/tty/serial/crisv10.c:4453: error: (Each undeclared identifier is reported only once: 2 errors in 2 logs drivers/tty/serial/crisv10.c:4453: error: for each function it appears in.): 2 errors in 2 logs "if_ser0" is a typo, it should be "if_serial_0". Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14mm: sync vmalloc address space page tables in alloc_vm_area()David Vrabel
Xen backend drivers (e.g., blkback and netback) would sometimes fail to map grant pages into the vmalloc address space allocated with alloc_vm_area(). The GNTTABOP_map_grant_ref would fail because Xen could not find the page (in the L2 table) containing the PTEs it needed to update. (XEN) mm.c:3846:d0 Could not find L1 PTE for address fbb42000 netback and blkback were making the hypercall from a kernel thread where task->active_mm != &init_mm and alloc_vm_area() was only updating the page tables for init_mm. The usual method of deferring the update to the page tables of other processes (i.e., after taking a fault) doesn't work as a fault cannot occur during the hypercall. This would work on some systems depending on what else was using vmalloc. Fix this by reverting ef691947d8a3 ("vmalloc: remove vmalloc_sync_all() from alloc_vm_area()") and add a comment to explain why it's needed. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Ian Campbell <Ian.Campbell@citrix.com> Cc: Keir Fraser <keir.xen@gmail.com> Cc: <stable@kernel.org> [3.0.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14memcg: Revert "memcg: add memory.vmscan_stat"Johannes Weiner
Revert the post-3.0 commit 82f9d486e59f5 ("memcg: add memory.vmscan_stat"). The implementation of per-memcg reclaim statistics violates how memcg hierarchies usually behave: hierarchically. The reclaim statistics are accounted to child memcgs and the parent hitting the limit, but not to hierarchy levels in between. Usually, hierarchical statistics are perfectly recursive, with each level representing the sum of itself and all its children. Since this exports statistics to userspace, this may lead to confusion and problems with changing things after the release, so revert it now, we can try again later. Signed-off-by: Johannes Weiner <jweiner@redhat.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Michal Hocko <mhocko@suse.cz> Cc: Ying Han <yinghan@google.com> Cc: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14mm: vmscan: fix force-scanning small targets without swapJohannes Weiner
Without swap, anonymous pages are not scanned. As such, they should not count when considering force-scanning a small target if there is no swap. Otherwise, targets are not force-scanned even when their effective scan number is zero and the other conditions--kswapd/memcg--apply. This fixes 246e87a93934 ("memcg: fix get_scan_count() for small targets"). [akpm@linux-foundation.org: fix comment] Signed-off-by: Johannes Weiner <jweiner@redhat.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: Michal Hocko <mhocko@suse.cz> Cc: Ying Han <yinghan@google.com> Cc: Balbir Singh <bsingharora@gmail.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Acked-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14drivers/rtc/rtc-imxdi.c needs linux/sched.hAxel Lin
Include linux/sched.h to fix below build error. CC drivers/rtc/rtc-imxdi.o drivers/rtc/rtc-imxdi.c: In function 'di_write_wait': drivers/rtc/rtc-imxdi.c:168: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function) drivers/rtc/rtc-imxdi.c:168: error: (Each undeclared identifier is reported only once drivers/rtc/rtc-imxdi.c:168: error: for each function it appears in.) drivers/rtc/rtc-imxdi.c:168: error: implicit declaration of function 'signal_pending' drivers/rtc/rtc-imxdi.c:168: error: implicit declaration of function 'schedule_timeout' drivers/rtc/rtc-imxdi.c: In function 'dryice_norm_irq': drivers/rtc/rtc-imxdi.c:329: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function) Signed-off-by: Axel Lin <axel.lin@gmail.com> Cc: Baruch Siach <baruch@tkos.co.il> Cc: Wan ZongShun <mcuos.com@gmail.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14alpha, gpio: GENERIC_GPIO default must be nBen Hutchings
Since GPIOLIB is optional on alpha, GENERIC_GPIO must not be selected by default. If GPIOLIB is enabled, it will select GENERIC_GPIO. See <http://bugs.debian.org/638696> for an example of what 'def_bool y' breaks. Reported-by: Michael Cree <mcree@orcon.net.nz> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Michael Cree <mcree@orcon.net.nz> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: fix strrchr() problemsAl Viro
richard@nod.at: Fixes: /usr/lib/gcc/x86_64-linux-gnu/4.4.5/../../../../lib/libc.a(strrchr.o): In function `rindex': (.text+0x0): multiple definition of `strrchr' If both STATIC_LINK and UML_NET_VDE are set to "y" libc's strrchr may clash with the kernel implementation. This workaround comes originally from Jeff Dike: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494995#35 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: clean arch_ptrace() up a bitAl Viro
1) take subarch-specific stuff to subarch_ptrace() 2) PTRACE_{PEEK,POKE}{TEXT,DATA} is handled by ptrace_request() just fine... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: PTRACE_[GS]ETFPXREGS had been wired on the wrong subarchAl Viro
It's 32bit-only, not 64bit-only... And while we are at it, it's set_fpxregs(), not set_fpregs()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: fix free_winch() messAl Viro
while not doing free_irq() from irq handler is commendable, kfree() on the data passed to said handler before free_irq() is Not Good(tm). Freeing the stack it's being run on is also not nice... Solution: delay actually freeing stuff. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: winch_interrupt() can happen inside of free_winch()Al Viro
... so set winch->fd to -1 before doing free_irq(), to avoid having winch_interrupt() come from/during the latter and attempt to do reactivate_fd() on something that's already gone. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: fix oopsable race in line_close()Al Viro
tty->count is decremented only after ->close() had been called and several tasks can hit it in parallel. As the result, using tty->count to check if you are the last one is broken. We end up leaving line->tty not reset to NULL and the next IRQ on that sucker will blow up trying to dereference pointers from kfree'd struct tty. Fix is obvious: we need to use a counter of our own. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: Save FPU registers between task switchesIngo van Lil
Some time ago Jeff prepared 42daba316557 ("uml: stop saving process FP state") for UML to stop saving the process FP state between task switches. The assumption was that since with SKAS0 every guest process runs inside a host process context the host OS will take care of keeping the proper FP state. Unfortunately this is not true for multi-threaded applications, where all guest threads share a single host process context yet all may use the FPU on their own. Although I haven't verified it I suspect things to be even worse in SKAS3 mode where all guest processes run inside a single host process. The patch reintroduces the saving and restoring of the FP context between task switches. [richard@nod.at: Ingo posted this patch in 2009, sadly it was never applied and got lost. Now in 2011 the problem was reported by Gunnar.] Signed-off-by: Ingo van Lil <inguin@gmx.de> Signed-off-by: Richard Weinberger <richard@nod.at> Reported-by: <gunnarlindroth@hotmail.com> Tested-by: <gunnarlindroth@hotmail.com> Cc: Stanislav Meduna <stano@meduna.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: drivers/xterm.c: fix a file descriptor leakJonathan Neuschäfer
I could use out_close1, but that seems to be the code path to close the fd returned by os_create_unix_socket, and using it to close the fd returned by mkstemp might lead to some confusion, so I don't do it. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14um: disable CMPXCHG_DOUBLE as it breaks UML buildThadeu Lima de Souza Cascardo
Commit b789ef518b2 ("slub: Add cmpxchg_double_slab()") tests for cmpxchg_double support in the SLUB code and it breaks UML builds with SLUB. Since UML does not support checking for CPU features, disable CMPXCHG_DOUBLE just like CMPXCHG_LOCAL is disabled for UML. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Reviewed-by: Christoph Lameter <cl@linux.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14numa: fix NUMA compile error when sysfs and procfs are disabledDavid Rientjes
The vmstat_text array is only defined for CONFIG_SYSFS or CONFIG_PROC_FS, yet it is referenced for per-node vmstat with CONFIG_NUMA: drivers/built-in.o: In function `node_read_vmstat': node.c:(.text+0x1106df): undefined reference to `vmstat_text' Introduced in commit fa25c503dfa2 ("mm: per-node vmstat: show proper vmstats"). Define the array for CONFIG_NUMA as well. [akpm@linux-foundation.org: remove unneeded ifdefs] Signed-off-by: David Rientjes <rientjes@google.com> Reported-by: Cong Wang <amwang@redhat.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14mm/mempolicy.c: make copy_from_user() provably correctKAMEZAWA Hiroyuki
When compiling mm/mempolicy.c with struct user copy checks the following warning is shown: In file included from arch/x86/include/asm/uaccess.h:572, from include/linux/uaccess.h:5, from include/linux/highmem.h:7, from include/linux/pagemap.h:10, from include/linux/mempolicy.h:70, from mm/mempolicy.c:68: In function `copy_from_user', inlined from `compat_sys_get_mempolicy' at mm/mempolicy.c:1415: arch/x86/include/asm/uaccess_64.h:64: warning: call to `copy_from_user_overflow' declared with attribute warning: copy_from_user() buffer size is not provably correct LD mm/built-in.o Fix this by passing correct buffer size value. Signed-off-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>
2011-09-14mm/mempolicy.c: fix pgoff in mbind vma mergeCaspar Zhang
commit 9d8cebd4bcd7 ("mm: fix mbind vma merge problem") didn't really fix the mbind vma merge problem due to wrong pgoff value passing to vma_merge(), which made vma_merge() always return NULL. Before the patch applied, we are getting a result like: addr = 0x7fa58f00c000 [snip] 7fa58f00c000-7fa58f00d000 rw-p 00000000 00:00 0 7fa58f00d000-7fa58f00e000 rw-p 00000000 00:00 0 7fa58f00e000-7fa58f00f000 rw-p 00000000 00:00 0 here 7fa58f00c000->7fa58f00f000 we get 3 VMAs which are expected to be merged described as described in commit 9d8cebd. Re-testing the patched kernel with the reproducer provided in commit 9d8cebd, we get the correct result: addr = 0x7ffa5aaa2000 [snip] 7ffa5aaa2000-7ffa5aaa6000 rw-p 00000000 00:00 0 7fffd556f000-7fffd5584000 rw-p 00000000 00:00 0 [stack] Signed-off-by: Caspar Zhang <caspar@casparzhang.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Minchan Kim <minchan.kim@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14Merge git://bedivere.hansenpartnership.com/git/scsi-rc-fixes-2.6Linus Torvalds
* git://bedivere.hansenpartnership.com/git/scsi-rc-fixes-2.6: (25 commits) [SCSI] bnx2i: Fixed the endian on TTT for NOP out transmission [SCSI] libfc: fix referencing to fc_fcp_pkt from the frame pointer via fr_fsp() [SCSI] libfc: block SCSI eh thread for blocked rports [SCSI] libfc: fix fc_eh_host_reset [SCSI] fcoe: Fix deadlock between fip's recv_work and rtnl [SCSI] qla2xxx: Update version number to 8.03.07.07-k. [SCSI] qla2xxx: Set the task attributes after memsetting fcp cmnd. [SCSI] qla2xxx: Correct inadvertent loop state transitions during port-update handling. [SCSI] qla2xxx: Save and restore irq in the response queue interrupt handler. [SCSI] qla2xxx: Double check for command completion if abort mailbox command fails. [SCSI] qla2xxx: Acquire hardware lock while manipulating dsd list. [SCSI] qla2xxx: Fix qla24xx revision check while enabling interrupts. [SCSI] qla2xxx: T10 DIF - Fix incorrect error reporting. [SCSI] qla2xxx: T10 DIF - Handle uninitalized sectors. [SCSI] hpsa: fix physical device lun and target numbering problem [SCSI] hpsa: fix problem that OBDR devices are not detected [SCSI] isci: add version number [SCSI] isci: fix event-get pointer increment [SCSI] isci: dynamic interrupt coalescing [SCSI] isci: Leave requests alone if already terminating. ...
2011-09-14Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfsLinus Torvalds
* 'for-linus' of git://oss.sgi.com/xfs/xfs: xfs: fix a use after free in xfs_end_io_direct_write
2011-09-14restore pinning the victim dentry in vfs_rmdir()/vfs_rename_dir()Al Viro
We used to get the victim pinned by dentry_unhash() prior to commit 64252c75a219 ("vfs: remove dget() from dentry_unhash()") and ->rmdir() and ->rename() instances relied on that; most of them don't care, but ones that used d_delete() themselves do. As the result, we are getting rmdir() oopses on NFS now. Just grab the reference before locking the victim and drop it explicitly after unlocking, same as vfs_rename_other() does. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Tested-by: Simon Kirby <sim@hostway.ca> Cc: stable@kernel.org (3.0.x) Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-14Merge branch 'fix/asoc' into for-linusTakashi Iwai
2011-09-14xfs: fix a use after free in xfs_end_io_direct_writeChristoph Hellwig
There is a window in which the ioend that we call inode_dio_wake on in xfs_end_io_direct_write is already free. Fix this by storing the inode pointer in a local variable. This is a fix for the regression introduced in 3.1-rc by "fs: move inode_dio_done to the end_io handler". Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
2011-09-14drm/radeon: Unreference GEM object outside of spinlock in page flip error path.Michel Dänzer
Should fix https://bugzilla.redhat.com/show_bug.cgi?id=726277 . Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-09-14drm/radeon: Don't read from CP ring write pointer registers.Michel Dänzer
Apparently this doesn't always work reliably, e.g. at resume time. Just initialize to 0, so the ring is considered empty. Tested with hibernation on Sumo and Cayman cards. Should fix https://bugs.launchpad.net/ubuntu/+source/linux/+bug/820746/ . Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-09-14drm/ttm: request zeroed system memory pages for new TT buffer objectsBen Skeggs
Fixes an information leak to userspace, we were handing out un-zeroed pages for any newly created TTM_PL_TT buffer. Reported-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Tested-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-09-14ARM: Dove: fix second SPI initialization callNicolas Pitre
Commit 980f9f601a "ARM: orion: Consolidate SPI initialization." broke it by overwriting the SPI0 registration. Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org> Cc: <stable@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2011-09-14ALSA: HDA: Cirrus - fix "Surround Speaker" volume control nameDavid Henningsson
This patch fixes "Surround Speaker Playback Volume" being cut off. (Commit b4dabfc452a10 was probably meant to fix this, but it fixed only the "Switch" name, not the "Volume" name.) Signed-off-by: David Henningsson <david.henningsson@canonical.com> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-09-14hwmon: (coretemp) Initialize tminJean Delvare
ttarget is initialized when the driver is loaded, but tmin is not. As a result, tempX_max_hyst attributes read 0. Fix this. Also use THERM_*_THRESHOLD* constants in these initializations instead of hard-coding the constants. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: "R, Durgadoss" <durgadoss.r@intel.com> Cc: Guenter Roeck <guenter.roeck@ericsson.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-09-14block: Don't check QUEUE_FLAG_SAME_COMP in __blk_complete_requestTao Ma
In __blk_complete_request, we check both QUEUE_FLAG_SAME_COMP and req->cpu to decide whether we should use req->cpu. Actually the user can also select the complete cpu by either setting BIO_CPU_AFFINE or by calling bio_set_completion_cpu. Current solution makes these 2 ways don't work any more. So we'd better just check req->cpu. Signed-off-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2011-09-13lib/sha1.c: quiet sparse noise about symbol not declaredH Hartley Sweeten
Include <linux/cryptohash.h> to pickup the declarations for sha_transform and sha_init to quite the sparse noise: warning: symbol 'sha_transform' was not declared. Should it be static? warning: symbol 'sha_init' was not declared. Should it be static? Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Mandeep Singh Baines <msb@chromium.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-13pci: Don't crash when reading mpss from root complexBenjamin Herrenschmidt
In pcie_find_smpss(), we have the following statement: if (dev->is_hotplug_bridge && (!list_is_singular(&dev->bus->devices) || dev->bus->self->pcie_type != PCI_EXP_TYPE_ROOT_PORT)) The problem is that at least on my machine, this gets called for the root complex (virtual P2P bridge), and dev->bus->self is NULL since the parent bus for this is not itself anchor to a PCI device. This adds the necessary NULL check. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Jon Mason <mason@myri.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-09-13x86, iommu: Mark DMAR IRQ as non-threadedThomas Gleixner
Mark this lowlevel IRQ handler as non-threaded. This prevents a boot crash when "threadirqs" is on the kernel commandline. Also the interrupt handler is handling hardware critical events which should not be delayed into a thread. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2011-09-13nfs: Do not allow multiple mounts on same mountpoint when using -o noacSachin Prabhu
Do not allow multiple mounts on same mountpoint when using -o noac When you normally attempt to mount a share twice on the same mountpoint, a check in do_add_mount causes it to return an error # mount localhost:/nfsv3 /mnt # mount localhost:/nfsv3 /mnt mount.nfs: /mnt is already mounted or busy However when using the option 'noac', the user is able to mount the same share on the same mountpoint multiple times. This happens because a share mounted with the noac option is automatically assigned the 'sync' flag MS_SYNCHRONOUS in nfs_initialise_sb(). This flag is set after the check for already existing superblocks is done in sget(). The check for the mount flags in nfs_compare_mount_options() does not take into account the 'sync' flag applied later on in the code path. This means that when using 'noac', a new superblock structure is assigned for every new mount of the same share and multiple shares on the same mountpoint are allowed. ie. # mount -onoac localhost:/nfsv3 /mnt can be run multiple times. The patch checks for noac and assigns the sync flag before sget() is called to obtain an already existing superblock structure. Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-09-13NFS: Fix a typo in nfs_flush_multiTrond Myklebust
Fix a typo which causes an Oops in the RPC layer, when using wsize < 4k. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Tested-by: Sricharan R <r.sricharan@ti.com>
2011-09-13iwlagn: fix command queue timeoutJohannes Berg
If the command queue is constantly busy, which can happen in P2P, the hangcheck timer will frequently find a command in it and will eventually reset the device because nothing sets the timestamp for this queue when commands are processed. Fix this by setting the timestamp when a command completes. Cc: stable@kernel.org #2.6.39, #3.0.0 #3.1.0 Signed-off-by: Johannes Berg <johannes.berg@intel.com> SIgned-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-13iwlagn: fix stack corruptionJohannes Berg
Alexander reported a strange crash in iwlagn that Meenakshi and Wey couldn't reproduce. I just ran into the same issue and tracked it down to stack corruption. This fixes it. The problem was introduced in commit 4b8b99b6e650d0527f3a123744b7459976581d14 Author: Wey-Yi Guy <wey-yi.w.guy@intel.com> Date: Fri Jul 8 14:29:48 2011 -0700 iwlagn: radio sensor offset in le16 format Cc: Wey-Yi Guy <wey-yi.w.guy@intel.com> Cc: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com> Reported-by: Alexander Diewald <alex@diewald.cc> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-13ath9k: Fix kernel panic on unplugging the deviceMohammed Shafi Shajakhan
when the device is yanked out ath_pci_remove starts doing the cleanups, unregistering the hardware etc. so we should bail out immediately when we get drv_flush callback from mac80211 when the card is being unplugged. the panic occurs after we had associated to an AP. EIP: 0060:[<fb315b00>] EFLAGS: 00010246 CPU: 0 EIP is at ath_reset+0xa0/0x1c0 [ath9k] EAX: 00000000 EBX: 000697c0 ECX: 00000002 EDX: f3c3ccf0 ESI: 00000000 EDI: 00000000 EBP: f43e7b78 ESP: f43e7b50 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Process kworker/u:2 (pid: 182, ti=f43e6000 task=f3c3c7c0 task.ti=f43e6000) Stack: 0000002a 00000000 00000000 003e7b78 0000000f eaaa8500 ffffffea eaaa97c0 eaaaa000 00000001 f43e7ba8 fb315d23 f99e7721 ecece680 eaaac738 eaaa8500 eaaaa020 000000c8 000000c8 00000000 eaaa8d58 eaaa8500 f43e7bd0 fb080b29 Call Trace: [<fb315d23>] ath9k_flush+0x103/0x170 [ath9k] [<fb080b29>] __ieee80211_recalc_idle+0x2c9/0x400 [mac80211] [<fb080c8e>] ieee80211_recalc_idle+0x2e/0x60 [mac80211] [<fb07aa73>] ieee80211_mgd_deauth+0x173/0x210 [mac80211] [<fb084559>] ieee80211_deauth+0x19/0x20 [mac80211] [<f99dda53>] __cfg80211_mlme_deauth+0xf3/0x140 [cfg80211] [<c0633d00>] ? __mutex_lock_common+0x1f0/0x380 [<f99e1b5d>] __cfg80211_disconnect+0x18d/0x1f0 [cfg80211] [<f99c8199>] cfg80211_netdev_notifier_call+0x159/0x5c0 [cfg80211] [<c0608a64>] ? packet_notifier+0x174/0x1f0 [<c0639202>] notifier_call_chain+0x82/0xb0 [<c0170d8f>] raw_notifier_call_chain+0x1f/0x30 [<c053b86c>] call_netdevice_notifiers+0x2c/0x60 [<c0182184>] ? trace_hardirqs_on_caller+0xf4/0x180 [<c053b8ec>] __dev_close_many+0x4c/0xd0 [<c053ba2d>] dev_close_many+0x6d/0xc0 [<c053bb53>] rollback_registered_many+0x93/0x1c0 [<c018221b>] ? trace_hardirqs_on+0xb/0x10 [<c053bc95>] unregister_netdevice_many+0x15/0x50 [<fb07f83b>] ieee80211_remove_interfaces+0x7b/0xb0 [mac80211] [<fb06a14b>] ieee80211_unregister_hw+0x4b/0x110 [mac80211] [<fb311a4a>] ath9k_deinit_device+0x3a/0x60 [ath9k] [<fb31eed6>] ath_pci_remove+0x46/0x90 [ath9k] [<c03b4ac4>] pci_device_remove+0x44/0x100 [<c043eb54>] __device_release_driver+0x64/0xb0 [<c043ec67>] device_release_driver+0x27/0x40 [<c043deeb>] bus_remove_device+0x7b/0xa0 [<c043c491>] device_del+0xf1/0x180 [<c043c530>] device_unregister+0x10/0x20 [<c03afafe>] pci_stop_bus_device+0x6e/0x80 [<c03afb72>] pci_remove_bus_device+0x12/0xa0 [<c03c2f29>] pciehp_unconfigure_device+0x89/0x180 [<c0181e54>] ? mark_held_locks+0x64/0x100 [<c063390f>] ? __mutex_unlock_slowpath+0xaf/0x140 [<c03c1f84>] pciehp_disable_slot+0x64/0x1b0 [<c03c2850>] pciehp_power_thread+0xd0/0x100 [<c0164ad0>] ? process_one_work+0x100/0x4d0 [<c0164b4c>] process_one_work+0x17c/0x4d0 [<c0164ad0>] ? process_one_work+0x100/0x4d0 [<c03c2780>] ? queue_interrupt_event+0xa0/0xa0 [<c01662bb>] worker_thread+0x13b/0x320 [<c018221b>] ? trace_hardirqs_on+0xb/0x10 [<c0166180>] ? manage_workers+0x1e0/0x1e0 [<c016a654>] kthread+0x84/0x90 [<c016a5d0>] ? __init_kthread_worker+0x60/0x60 [<c063d106>] kernel_thread_helper+0x6/0x10 Cc: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-13mac80211: fix missing sta_lock in __sta_info_destroyJohannes Berg
Since my commit 34e895075e21be3e21e71d6317440d1ee7969ad0 ("mac80211: allow station add/remove to sleep") there is a race in mac80211 when it clears the TIM bit because a sleeping station disconnected, the spinlock isn't held around the relevant code any more. Use the right API to acquire the spinlock correctly. Cc: stable@kernel.org [2.6.34+] Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-13rtlwifi: Fix problem when switching connectionsGeorge
The driver fails to clear encryption keys making it impossible to switch connections. Signed-off-by: George <george0505@realtek.com> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Stable <stable@kernel.org> [2.6.39+] Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-13rtlwifi: rtl8192su: Fix problem connecting to HT-enabled APGeorge
The driver fails to connect to 802.11n-enabled APs. The patch fixes Bug #42262. Signed-off-by: George <george0505@realtek.com> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Cc: Stable <stable@kernel.org> [2.6.39+] Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-09-13xen/e820: if there is no dom0_mem=, don't tweak extra_pages.David Vrabel
The patch "xen: use maximum reservation to limit amount of usable RAM" (d312ae878b6aed3912e1acaaf5d0b2a9d08a4f11) breaks machines that do not use 'dom0_mem=' argument with: reserve RAM buffer: 000000133f2e2000 - 000000133fffffff (XEN) mm.c:4976:d0 Global bit is set to kernel page fffff8117e (XEN) domain_crash_sync called from entry.S (XEN) Domain 0 (vcpu#0) crashed on cpu#0: ... The reason being that the last E820 entry is created using the 'extra_pages' (which is based on how many pages have been freed). The mentioned git commit sets the initial value of 'extra_pages' using a hypercall which returns the number of pages (if dom0_mem has been used) or -1 otherwise. If the later we return with MAX_DOMAIN_PAGES as basis for calculation: return min(max_pages, MAX_DOMAIN_PAGES); and use it: extra_limit = xen_get_max_pages(); if (extra_limit >= max_pfn) extra_pages = extra_limit - max_pfn; else extra_pages = 0; which means we end up with extra_pages = 128GB in PFNs (33554432) - 8GB in PFNs (2097152, on this specific box, can be larger or smaller), and then we add that value to the E820 making it: Xen: 00000000ff000000 - 0000000100000000 (reserved) Xen: 0000000100000000 - 000000133f2e2000 (usable) which is clearly wrong. It should look as so: Xen: 00000000ff000000 - 0000000100000000 (reserved) Xen: 0000000100000000 - 000000027fbda000 (usable) Naturally this problem does not present itself if dom0_mem=max:X is used. CC: stable@kernel.org Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-09-13hwmon: (pmbus) Fix low limit temperature alarmsGuenter Roeck
Temperature alarms are detected by checking the alarm bit and comparing temperature limits against the current temperature. For low limits, this comparison needs to be reversed (temp < limit instead of temp > limit). This was not taken into account, resulting in wrong alarms if a temperature fell below a low limit. Fix by adding a low limit flag in the limit data structure. When creating the sensor entry, the order of registers to compare is now reversed for low limits. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: stable@kernel.org # 3.0+
2011-09-13ALSA: hda - Terminate the recursive connection search properlyTakashi Iwai
The recursive search of widget connections in snd_hda_get_conn_index() must be terminated at the pin and the audio-out widgets. Otherwise you'll get "too deep connection" warnings unnecessarily. Reported-by: Francis Moreau <francis.moro@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-09-12Input: wacom - fix touch parsing on newer BamboosChris Bagwell
Bamboos with Product ID's > 0xD4 return values unrelated to pressure in touch 1 pressure field. They also report 2nd touch X/Y values shifted down 1 byte (where pressure was). This results in jumpy 1 finger touch and totally invalid 2nd finger data. For touch detection, switch to a Touch Present single bit that all versions of Bamboo support. For touch 2 offset, calculate offset based on a bit that is set different between the two packet layouts. Since touch pressure reports were removed from driver, there was no need to be reading pressure any more. Signed-off-by: Chris Bagwell <chris@cnpbagwell.com> Reviewed-by: Ping Cheng <pinglinux@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-09-12Merge branch 'acpi' of git://github.com/lenb/linuxLinus Torvalds
* 'acpi' of git://github.com/lenb/linux: acpica: ACPI_MAX_SLEEP should be 2 sec, not 20 ACPI APEI: Add Kconfig option IRQ_WORK for GHES PNP: update pnp.debug usage (needs value on command line) APEI: Fix WHEA _OSC call
2011-09-12Merge branch 'upstream/bugfix' of git://github.com/jsgf/linux-xenLinus Torvalds
* 'upstream/bugfix' of git://github.com/jsgf/linux-xen: xen: use non-tracing preempt in xen_clocksource_read()
2011-09-12Merge branches 'apei', 'bz-13195' and 'doc' into acpiLen Brown
2011-09-12Linux 3.1-rc6v3.1-rc6Linus Torvalds
2011-09-12Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm: Remove duplicate "return" statement drm/nv04/crtc: Bail out if FB is not bound to crtc drm/nouveau: fix nv04_sgdma_bind on non-"4kB pages" archs drm/nouveau: properly handle allocation failure in nouveau_sgdma_populate drm/nouveau: fix oops on pre-semaphore hardware drm/nv50/crtc: Bail out if FB is not bound to crtc drm/radeon/kms: fix DP detect and EDID fetch for DP bridges
generated by cgit (git 2.34.1) at 2025-09-12 03:58:27 +0000