- 17 Apr, 2013 1 commit
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Cong Ding authored
The variable npages might be used uninitialized. Signed-off-by: Cong Ding <dinggnu@gmail.com> Acked-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
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- 15 Apr, 2013 1 commit
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Linus Torvalds authored
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- 14 Apr, 2013 10 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "Misc fixes" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Flush lazy MMU when DEBUG_PAGEALLOC is set x86/mm/cpa/selftest: Fix false positive in CPA self test x86/mm/cpa: Convert noop to functional fix x86, mm: Patch out arch_flush_lazy_mmu_mode() when running on bare metal x86, mm, paravirt: Fix vmalloc_fault oops during lazy MMU updates
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fixes from Ingo Molnar: "Misc fixlets" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/cputime: Fix accounting on multi-threaded processes sched/debug: Fix sd->*_idx limit range avoiding overflow sched_clock: Prevent 64bit inatomicity on 32bit systems sched: Convert BUG_ON()s in try_to_wake_up_local() to WARN_ON_ONCE()s
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Ingo Molnar: "Misc fixlets" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf: Fix error return code ftrace: Fix strncpy() use, use strlcpy() instead of strncpy() perf: Fix strncpy() use, use strlcpy() instead of strncpy() perf: Fix strncpy() use, always make sure it's NUL terminated perf: Fix ring_buffer perf_output_space() boundary calculation perf/x86: Fix uninitialized pt_regs in intel_pmu_drain_bts_buffer()
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull drm fixes from Dave Airlie: "One fix for a hotplug locking regressions, and one fix for an oops if you unplug the monitor at an inopportune moment on the udl device." * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/fb-helper: Fix locking in drm_fb_helper_hotplug_event udl: handle EDID failure properly.
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git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommuLinus Torvalds authored
Pull m68knommu fix from Greg Ungerer: "This contains only a single compilation fix for ColdFire m68k targets that use local non-GPIOLIB support." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k: define a local gpio_request_one() function
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git://www.linux-watchdog.org/linux-watchdogLinus Torvalds authored
Pull watchdog fix from Wim Van Sebroeck: "It will fix compile errors for the at91rm9200_wdt driver" * git://www.linux-watchdog.org/linux-watchdog: watchdog: Revert the AT91RM9200_WATCHDOG dependency
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfsLinus Torvalds authored
Pull one more btrfs fix from Chris Mason: "This has a recent fix from Josef for our tree log replay code. It fixes problems where the inode counter for the number of bytes in the file wasn't getting updated properly during fsync replay. The commit did get rebased this morning, but it was only to clean up the subject line. The code hasn't changed." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Btrfs: make sure nbytes are right after log replay
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Linus Torvalds authored
Merge tag 'trace-fixes-v3.9-rc-v3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull ftrace fixes from Steven Rostedt: "Namhyung Kim found and fixed a bug that can crash the kernel by simply doing: echo 1234 | tee -a /sys/kernel/debug/tracing/set_ftrace_pid Luckily, this can only be done by root, but still is a nasty bug." * tag 'trace-fixes-v3.9-rc-v3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section tracing: Fix possible NULL pointer dereferences
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Linus Torvalds authored
Nothing is using it yet, but this will allow us to delay the open-time checks to use time, without breaking the normal UNIX permission semantics where permissions are determined by the opener (and the file descriptor can then be passed to a different process, or the process can drop capabilities). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Nicolas Ferre authored
Compiling the at91rm9200_wdt.c driver without at91rm9200 support was leading to several errors: drivers/built-in.o: In function `at91_wdt_close': at91_adc.c:(.text+0xc9fe4): undefined reference to `at91_st_base' drivers/built-in.o: In function `at91_wdt_write': at91_adc.c:(.text+0xca004): undefined reference to `at91_st_base' drivers/built-in.o: In function `at91wdt_shutdown': at91_adc.c:(.text+0xca01c): undefined reference to `at91_st_base' drivers/built-in.o: In function `at91wdt_suspend': at91_adc.c:(.text+0xca038): undefined reference to `at91_st_base' drivers/built-in.o: In function `at91_wdt_open': at91_adc.c:(.text+0xca0cc): undefined reference to `at91_st_base' drivers/built-in.o:at91_adc.c:(.text+0xca2c8): more undefined references to `at91_st_base' follow So, reverting the modification of the "depends" Kconfig line introduced by patch a6a1bcd3 (watchdog: at91rm9200: add DT support) seems to be the good solution. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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- 13 Apr, 2013 3 commits
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Suleiman Souhlal authored
Revert commit 62a3ddef ("vfs: fix spinning prevention in prune_icache_sb"). This commit doesn't look right: since we are looking at the tail of the list (sb->s_inode_lru.prev) if we want to skip an inode, we should put it back at the head of the list instead of the tail, otherwise we will keep spinning on it. Discovered when investigating why prune_icache_sb came top in perf reports of a swapping load. Signed-off-by: Suleiman Souhlal <suleiman@google.com> Signed-off-by: Hugh Dickins <hughd@google.com> Cc: stable@vger.kernel.org # v3.2+ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
Anatol Pomozov identified a race condition that hits module unloading and re-loading. To quote Anatol: "This is a race codition that exists between kset_find_obj() and kobject_put(). kset_find_obj() might return kobject that has refcount equal to 0 if this kobject is freeing by kobject_put() in other thread. Here is timeline for the crash in case if kset_find_obj() searches for an object tht nobody holds and other thread is doing kobject_put() on the same kobject: THREAD A (calls kset_find_obj()) THREAD B (calls kobject_put()) splin_lock() atomic_dec_return(kobj->kref), counter gets zero here ... starts kobject cleanup .... spin_lock() // WAIT thread A in kobj_kset_leave() iterate over kset->list atomic_inc(kobj->kref) (counter becomes 1) spin_unlock() spin_lock() // taken // it does not know that thread A increased counter so it remove obj from list spin_unlock() vfree(module) // frees module object with containing kobj // kobj points to freed memory area!! kobject_put(kobj) // OOPS!!!! The race above happens because module.c tries to use kset_find_obj() when somebody unloads module. The module.c code was introduced in commit 6494a93d" Anatol supplied a patch specific for module.c that worked around the problem by simply not using kset_find_obj() at all, but rather than make a local band-aid, this just fixes kset_find_obj() to be thread-safe using the proper model of refusing the get a new reference if the refcount has already dropped to zero. See examples of this proper refcount handling not only in the kref documentation, but in various other equivalent uses of this pattern by grepping for atomic_inc_not_zero(). [ Side note: the module race does indicate that module loading and unloading is not properly serialized wrt sysfs information using the module mutex. That may require further thought, but this is the correct fix at the kobject layer regardless. ] Reported-analyzed-and-tested-by: Anatol Pomozov <anatol.pomozov@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Josef Bacik authored
While trying to track down a tree log replay bug I noticed that fsck was always complaining about nbytes not being right for our fsynced file. That is because the new fsync stuff doesn't wait for ordered extents to complete, so the inodes nbytes are not necessarily updated properly when we log it. So to fix this we need to set nbytes to whatever it is on the inode that is on disk, so when we replay the extents we can just add the bytes that are being added as we replay the extent. This makes it work for the case that we have the wrong nbytes or the case that we logged everything and nbytes is actually correct. With this I'm no longer getting nbytes errors out of btrfsck. Cc: stable@vger.kernel.org Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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- 12 Apr, 2013 20 commits
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Dave Hansen authored
This patch attempts to fix: https://bugzilla.kernel.org/show_bug.cgi?id=56461 The symptom is a crash and messages like this: chrome: Corrupted page table at address 34a03000 *pdpt = 0000000000000000 *pde = 0000000000000000 Bad pagetable: 000f [#1] PREEMPT SMP Ingo guesses this got introduced by commit 611ae8e3 ("x86/tlb: enable tlb flush range support for x86") since that code started to free unused pagetables. On x86-32 PAE kernels, that new code has the potential to free an entire PMD page and will clear one of the four page-directory-pointer-table (aka pgd_t entries). The hardware aggressively "caches" these top-level entries and invlpg does not actually affect the CPU's copy. If we clear one we *HAVE* to do a full TLB flush, otherwise we might continue using a freed pmd page. (note, we do this properly on the population side in pud_populate()). This patch tracks whenever we clear one of these entries in the 'struct mmu_gather', and ensures that we follow up with a full tlb flush. BTW, I disassembled and checked that: if (tlb->fullmm == 0) and if (!tlb->fullmm && !tlb->need_flush_all) generate essentially the same code, so there should be zero impact there to the !PAE case. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Cc: Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Artem S Tashkinov <t.artem@mailcity.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pendingLinus Torvalds authored
Pull SCSI target fixes from Nicholas Bellinger: "Here are remaining target-pending items for v3.9-rc7 code. The tcm_vhost patches are more than I'd usually include in a -rc7 pull, but are changes required for v3.9 to work correctly with the pending vhost-scsi-pci QEMU upstream series merge. (Paolo CC'ed) Plus Asias's conversion to use vhost_virtqueue->private_data + RCU for managing vhost-scsi endpoints has gotten alot of review + testing over the past weeks, and MST has ACKed the full series. Also, there is a target patch to fix a long-standing bug within control CDB handling with Standby/Offline/Transition ALUA port access states, that had been incorrectly rejecting the control CDBs required for LUN scan to work during these port group states. CC'ing to stable." * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: target: Fix incorrect fallthrough of ALUA Standby/Offline/Transition CDBs tcm_vhost: Send bad target to guest when cmd fails tcm_vhost: Add vhost_scsi_send_bad_target() helper tcm_vhost: Fix tv_cmd leak in vhost_scsi_handle_vq tcm_vhost: Remove double check of response tcm_vhost: Initialize vq->last_used_idx when set endpoint tcm_vhost: Use vq->private_data to indicate if the endpoint is setup tcm_vhost: Use ACCESS_ONCE for vs->vs_tpg[target] access
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "This is a set of ten bug fixes (and two consisting of copyright year update and version number change) pretty much all of which involve either a crash or a hang except the removal of the random sleep from the qla2xxx driver (which is a coding error so bad, we want it gone before anyone has a chance to copy it)." * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: [SCSI] lpfc: fix potential NULL pointer dereference in lpfc_sli4_rq_put() [SCSI] libsas: fix handling vacant phy in sas_set_ex_phy() [SCSI] ibmvscsi: Fix slave_configure deadlock [SCSI] qla2xxx: Update the driver version to 8.04.00.13-k. [SCSI] qla2xxx: Remove debug code that msleeps for random duration. [SCSI] qla2xxx: Update copyright dates information in LICENSE.qla2xxx file. [SCSI] qla2xxx: Fix crash during firmware dump procedure. [SCSI] Revert "qla2xxx: Add setting of driver version string for vendor application." [SCSI] ipr: dlpar failed when adding an adapter back [SCSI] ipr: fix addition of abort command to HRRQ free queue [SCSI] st: Take additional queue ref in st_probe [SCSI] libsas: use right function to alloc smp response [SCSI] ipr: ipr_test_msi() fails when running with msi-x enabled adapter
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull CIFS fix from Steve French: "Fixes a regression in cifs in which a password which begins with a comma is parsed incorrectly as a blank password" * 'for-next' of git://git.samba.org/sfrench/cifs-2.6: cifs: Allow passwords which begin with a delimitor
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Steven Rostedt (Red Hat) authored
As ftrace_filter_lseek is now used with ftrace_pid_fops, it needs to be moved out of the #ifdef CONFIG_DYNAMIC_FTRACE section as the ftrace_pid_fops is defined when DYNAMIC_FTRACE is not. Cc: stable@vger.kernel.org Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Namhyung Kim authored
Currently set_ftrace_pid and set_graph_function files use seq_lseek for their fops. However seq_open() is called only for FMODE_READ in the fops->open() so that if an user tries to seek one of those file when she open it for writing, it sees NULL seq_file and then panic. It can be easily reproduced with following command: $ cd /sys/kernel/debug/tracing $ echo 1234 | sudo tee -a set_ftrace_pid In this example, GNU coreutils' tee opens the file with fopen(, "a") and then the fopen() internally calls lseek(). Link: http://lkml.kernel.org/r/1365663302-2170-1-git-send-email-namhyung@kernel.org Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: stable@vger.kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound fixes from Takashi Iwai: "This contains a few small ASoC fixes (wm8903, wm5102, samsung-i2s, tegra, and soc-compress) and an endian fix for NI USB-audio devices, update for Mark's e-mail address. No scary changes, AFAIS." * tag 'sound-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: MAINTAINERS: Update e-mail address ASoC: wm5102: Correct lookup of arizona struct in SYSCLK event ASoC: wm8903: Fix the bypass to HP/LINEOUT when no DAC or ADC is running ALSA: usb-audio: fix endianness bug in snd_nativeinstruments_* ASoC: tegra: Don't claim to support PCM pause and resume ASoC: Samsung: set drvdata before adding secondary device ASoC: Samsung: return error if drvdata is not set ASoC: compress: Cancel delayed power down if needed ASoC: core: Fix to check return value of snd_soc_update_bits_locked()
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Takashi Iwai authored
Merge tag 'asoc-maintainers-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus MAINTAINERS: Update e-mail address Update the e-mail address I use for subsystems.
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Mark Brown authored
Update the e-mail address I use for subsystems. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Takashi Iwai authored
Merge tag 'asoc-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Updates for v3.9 A few updates, more than I'd like, fixing some relatively small issues but mostly driver specific ones. Nothing wildly exciting so if it doesn't make v3.9 it won't be the end of the world but it'd be nice.
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Boris Ostrovsky authored
When CONFIG_DEBUG_PAGEALLOC is set page table updates made by kernel_map_pages() are not made visible (via TLB flush) immediately if lazy MMU is on. In environments that support lazy MMU (e.g. Xen) this may lead to fatal page faults, for example, when zap_pte_range() needs to allocate pages in __tlb_remove_page() -> tlb_next_batch(). Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: konrad.wilk@oracle.com Link: http://lkml.kernel.org/r/1365703192-2089-1-git-send-email-boris.ostrovsky@oracle.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Andrea Arcangeli authored
If the pmd is not present, _PAGE_PSE will not be set anymore. Fix the false positive. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: Stefan Bader <stefan.bader@canonical.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Borislav Petkov <bp@alien8.de> Link: http://lkml.kernel.org/r/1365687369-30802-1-git-send-email-aarcange@redhat.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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Wei Yongjun authored
Fix to return -ENOMEM in the allocation error case instead of 0 (if pmu_bus_running == 1), as done elsewhere in this function. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org Cc: acme@ghostprotocols.net Link: http://lkml.kernel.org/r/CAPgLHd8j_fWcgqe%3DKLWjpBj%2B%3Do0Pw6Z-SEq%3DNTPU08c2w1tngQ@mail.gmail.com [ Tweaked the error code setting placement and the changelog. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Daniel Vetter authored
Driver's and ->fill_modes functions are allowed to grab crtc mutexes (for e.g. load detect). Hence we need to first only grab the general kms mutex, and only in a second step grab all locks to do the modesets. This prevents a deadlock on my gm45 in the tv load detect code called by drm_helper_probe_single_connector_modes. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
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Dave Airlie authored
Don't oops seems proper. Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds authored
Pull slave-dmaengine fixes from Vinod Koul: "The first one fixes issue in pl330 to check for DT compatible and the second one fixes omap-dma to start without delay" * 'fixes' of git://git.infradead.org/users/vkoul/slave-dma: dmaengine: omap-dma: Start DMA without delay for cyclic channels DMA: PL330: Add check if device tree compatible
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management fixes from Rafael Wysocki: - System reboot/halt fix related to CPU offline ordering from Huacai Chen. - intel_pstate driver fix for a delay time computation error occasionally crashing systems using it from Dirk Brandewie. * tag 'pm-3.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM / reboot: call syscore_shutdown() after disable_nonboot_cpus() cpufreq / intel_pstate: Set timer timeout correctly
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmapLinus Torvalds authored
Pull regmap revert from Mark Brown: "regmap: Back out work buffer fix This reverts commit bc8ce4 (regmap: don't corrupt work buffer in _regmap_raw_write()) since it turns out that it can cause issues when taken in isolation from the other changes in -next that lead to its discovery. On the basis that nobody noticed the problems for quite some time without that subsequent work let's drop it from v3.9." * tag 'regmap-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: Back out work buffer fix
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpioLinus Torvalds authored
Pull GPIO fix from Linus Walleij: "Oneliner fix for the PCA 953x driver." * tag 'gpio-fixes-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: gpio: pca953x: fix irq_domain_add_simple usage
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds authored
Pull ARM SoC bug fixes from Arnd Bergmann: "A little later during the week than the last few pull requests, since there was very little that came in before 3.9-rc6. At least things have calmed down again here. Some important bug fixes that came in over the last 10 days, mostly mvebu and imx: - Multiple regressions on i.mx following the conversion of the clock code, hopefully the last we are seeing of those. - a regression in the mvebu irq handling code - An incorrect register offset in the rewritten s3c24xx irq code. - Two bugs in setting up the iomega_ix2_200 machine - Turning on an extra bus clock on imx - A MAINTAINERS file entry for Roland Stigge" * tag 'arm-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: arm: mvebu: Fix the irq map function in SMP mode Fix GE0/GE1 init on ix2-200 as GE0 has no PHY ARM: S3C24XX: Fix interrupt pending register offset of the EINT controller ARM: S3C24XX: Correct NR_IRQS definition for s3c2440 ARM i.MX6: Fix ldb_di clock selection ARM: imx: provide twd clock lookup from device tree ARM: imx35 Bugfix admux clock ARM: clk-imx35: Bugfix iomux clock ARM: mxs: Slow down the I2C clock speed MAINTAINERS: Add maintainer for LPC32xx ARM: Kirkwood: Fix typo in the definition of ix2-200 rebuild LED
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- 11 Apr, 2013 5 commits
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Wei Yongjun authored
The dereference to 'put_index' should be moved below the NULL test. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Alexandre Belloni authored
We actually have to pass chip as the host_data parameter of irq_domain_add_simple() as later on, it is used to initialize chip_data in pca953x_gpio_irq_map(). Failing to do so is leading to a NULL pointer dereference after calling irq_data_get_irq_chip_data() in pca953x_irq_mask(), pca953x_irq_unmask(), pca953x_irq_bus_lock(), pca953x_irq_bus_sync_unlock() and pca953x_irq_set_type(). Fixes regression introduced by commit 0e8f2fda (gpio: pca953x: use simple irqdomain) Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Mark Brown authored
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Mark Brown authored
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Mark Brown authored
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