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2015-11-07cpufreq: CPPC: Delete an unnecessary check before the function call kfree()Markus Elfring1-2/+1
The kfree() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-10-12ACPI: Allow selection of the ACPI processor driver for ARM64Ashwin Chaugule1-3/+3
Now that the ACPI processor driver has been decoupled from the C states and P states functionality, make it selectable on ARM64 so that it can be used by others e.g. CPPC. The C states and P states code is selected only on X86 or IA64 until the relevant support is added on ARM64. Signed-off-by: Ashwin Chaugule <ashwin.chaugule@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-10-12CPPC: Probe for CPPC tables for each ACPI Processor objectAshwin Chaugule2-0/+20
For each detected ACPI Processor object (ACPI0007), search its device handle for CPPC specific tables (i.e. _CPC) and extract CPU specific performance capabilities. Signed-off-by: Ashwin Chaugule <ashwin.chaugule@linaro.org> Reviewed-by: Al Stone <al.stone@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-10-12ACPI: Add weak routines for ACPI CPU HotplugAshwin Chaugule1-0/+18
Add weak functions for architectures which do not support hot-adding and removing CPUs which aren't detected at bootup. (e.g. via MADT). This helps preserve the Kconfig dependency from: commit cbfc1bae55bb ("[ACPI] ACPI_HOTPLUG_CPU Kconfig dependency update") prevent: HOTPLUG_CPU=y ACPI_PROCESSOR=y ACPI_HOTPLUG_CPU=n Signed-off-by: Ashwin Chaugule <ashwin.chaugule@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-10-12ACPI / CPPC: Add a CPUFreq driver for use with CPPCAshwin Chaugule3-0/+195
This driver utilizes the methods introduced in a previous patch titled - "ACPI: Introduce CPU performance controls using CPPC" and enables usage with existing CPUFreq governors. Signed-off-by: Ashwin Chaugule <ashwin.chaugule@linaro.org> Reviewed-by: Al Stone <al.stone@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-10-12ACPI: Introduce CPU performance controls using CPPCAshwin Chaugule4-0/+887
CPPC stands for Collaborative Processor Performance Controls and is defined in the ACPI v5.0+ spec. It describes CPU performance controls on an abstract and continuous scale allowing the platform (e.g. remote power processor) to flexibly optimize CPU performance with its knowledge of power budgets and other architecture specific knowledge. This patch adds a shim which exports commonly used functions to get and set CPPC specific controls for each CPU. This enables CPUFreq drivers to gather per CPU performance data and use with exisiting governors or even allows for customized governors which are implemented inside CPUFreq drivers. Signed-off-by: Ashwin Chaugule <ashwin.chaugule@linaro.org> Reviewed-by: Al Stone <al.stone@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-10-11Linux 4.3-rc5v4.3-rc5Linus Torvalds1-2/+2
2015-10-11Merge branch 'sched-urgent-for-linus' of ↵Linus Torvalds2-7/+8
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fix from Thomas Gleixner: "Fix a long standing state race in finish_task_switch()" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/core: Fix TASK_DEAD race in finish_task_switch()
2015-10-11Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds3-1/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fix from Thomas Glexiner: "Fix build breakage on powerpc in perf tools" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf tools: Fix build break on powerpc due to sample_reg_masks
2015-10-11Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull maintainer email update from Thomas Gleixner: "Change Matt Fleming's email address in the maintainers file" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: MAINTAINERS: Change Matt Fleming's email address
2015-10-11Merge branch 'irq-urgent-for-linus' of ↵Linus Torvalds2-1/+6
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq fixes from Thomas Gleixner: "Three trivial commits: - Fix a kerneldoc regression - Export handle_bad_irq to unbreak a driver in next - Add an accessor for the of_node field so refactoring in next does not depend on merge ordering" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqdomain: Add an accessor for the of_node field genirq: Fix handle_bad_irq kerneldoc comment genirq: Export handle_bad_irq
2015-10-11Merge tag 'scsi-fixes' of ↵Linus Torvalds3-14/+33
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "This is a set of three bug fixes, two of which are regressions from recent updates (the 3ware one from 4.1 and the device handler fixes from 4.2)" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: 3w-9xxx: don't unmap bounce buffered commands scsi_dh: Use the correct module name when loading device handler libiscsi: Fix iscsi_check_transport_timeouts possible infinite loop
2015-10-11Merge tag 'md/4.3-rc4-fix' of git://neil.brown.name/mdLinus Torvalds2-4/+4
Pull md bugfix from Neil Brown: "One bug fix for raid1/raid10. Very careless bug earler in 4.3-rc, now fixed :-)" * tag 'md/4.3-rc4-fix' of git://neil.brown.name/md: crash in md-raid1 and md-raid10 due to incorrect list manipulation
2015-10-11MAINTAINERS: Change Matt Fleming's email addressMatt Fleming1-2/+2
My Intel email address will soon expire. Replace it with my personal address so people still know where to send patches. Signed-off-by: Matt Fleming <matt.fleming@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1444494136-10333-1-git-send-email-matt@codeblueprint.co.uk Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-10-10Merge tag 'usb-4.3-rc5' of ↵Linus Torvalds9-4/+43
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB fixes from Greg KH: "Here are some small USB and PHY fixes and quirk updates for 4.3-rc5. Nothing major here, full details in the shortlog, and all of these have been in linux-next for a while" * tag 'usb-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usb: Add device quirk for Logitech PTZ cameras USB: chaoskey read offset bug USB: Add reset-resume quirk for two Plantronics usb headphones. usb: renesas_usbhs: Add support for R-Car H3 usb: renesas_usbhs: fix build warning if 64-bit architecture usb: gadget: bdc: fix memory leak phy: berlin-sata: Fix module autoload for OF platform driver phy: rockchip-usb: power down phy when rockchip phy probe phy: qcom-ufs: fix build error when the component is built as a module
2015-10-10Merge tag 'tty-4.3-rc5' of ↵Linus Torvalds6-28/+79
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty/serial driver fixes from Greg KH: "Here are a few bug fixes for the tty core that resolve reported issues, and some serial driver fixes as well (including the much-reported imx driver problem) All of these have been in linux-next with no reported problems" * tag 'tty-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: drivers/tty: require read access for controlling terminal serial: 8250: add uart_config entry for PORT_RT2880 tty: fix data race on tty_buffer.commit tty: fix data race in tty_buffer_flush tty: fix data race in flush_to_ldisc tty: fix stall caused by missing memory barrier in drivers/tty/n_tty.c serial: atmel: fix error path of probe function tty: don't leak cdev in tty_cdev_add() Revert "serial: imx: remove unbalanced clk_prepare"
2015-10-10Merge tag 'staging-4.3-rc5' of ↵Linus Torvalds2-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging fixes from Greg KH: "Here are two tiny staging tree fixes for 4.3-rc5. One fixes the broken speakup subsystem as reported by a user, and the other removes an entry in the MAINTAINERS file for a developer that doesn't want to be listed anymore" * tag 'staging-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: staging: speakup: fix speakup-r regression MAINTAINERS: Remove myself as nvec co-maintainer
2015-10-10Merge tag 'char-misc-4.3-rc5' of ↵Linus Torvalds4-8/+19
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver fixes from Greg KH: "Here are some small fixes for some misc drivers that resolve some reported issues. All of these have been linux-next for a while" * tag 'char-misc-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: mcb: Fix error handling in mcb_pci_probe() mei: hbm: fix error in state check logic nvmem: sunxi: Check for memory allocation failure nvmem: core: Fix memory leak in nvmem_cell_write nvmem: core: Handle shift bits in-place if cell->nbits is non-zero nvmem: core: fix the out-of-range leak in read/write()
2015-10-10Merge git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds2-12/+8
Pull MIPS fixes from Ralf Baechle: - MIPS didn't define the new ioremap_uc. Defined it as an alias for ioremap_uncached. - Replace workaround for MIPS16 build issue with a correct one. * git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: Define ioremap_uc MIPS: UAPI: Ignore __arch_swab{16,32,64} when using MIPS16 Revert "MIPS: UAPI: Fix unrecognized opcode WSBH/DSBH/DSHD when using MIPS16."
2015-10-10Merge branch 'stable/for-linus-4.3' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb Pull swiotlb fixlet from Konrad Rzeszutek Wilk: "Enable the SWIOTLB under 32-bit PAE kernels. Nowadays most distros enable this due to CONFIG_HYPERVISOR|XEN=y which select SWIOTLB. But for those that are not interested in virtualization and wanting to use 32-bit PAE kernels and wanting to have working DMA operations - this configures it for them" * 'stable/for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb: swiotlb: Enable it under x86 PAE
2015-10-10namei: results of d_is_negative() should be checked after dentry revalidationTrond Myklebust1-2/+6
Leandro Awa writes: "After switching to version 4.1.6, our parallelized and distributed workflows now fail consistently with errors of the form: T34: ./regex.c:39:22: error: config.h: No such file or directory From our 'git bisect' testing, the following commit appears to be the possible cause of the behavior we've been seeing: commit 766c4cbfacd8" Al Viro says: "What happens is that 766c4cbfacd8 got the things subtly wrong. We used to treat d_is_negative() after lookup_fast() as "fall with ENOENT". That was wrong - checking ->d_flags outside of ->d_seq protection is unreliable and failing with hard error on what should've fallen back to non-RCU pathname resolution is a bug. Unfortunately, we'd pulled the test too far up and ran afoul of another kind of staleness. The dentry might have been absolutely stable from the RCU point of view (and we might be on UP, etc), but stale from the remote fs point of view. If ->d_revalidate() returns "it's actually stale", dentry gets thrown away and the original code wouldn't even have looked at its ->d_flags. What we need is to check ->d_flags where 766c4cbfacd8 does (prior to ->d_seq validation) but only use the result in cases where we do not discard this dentry outright" Reported-by: Leandro Awa <lawa@nvidia.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=104911 Fixes: 766c4cbfacd8 ("namei: d_is_negative() should be checked...") Tested-by: Leandro Awa <lawa@nvidia.com> Cc: stable@vger.kernel.org # v4.1+ Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-10-09Merge tag 'pm+acpi-4.3-rc5' of ↵Linus Torvalds3-4/+10
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management and ACPI fixes from Rafael Wysocki: "These are four fixes for bugs in the devfreq and cpufreq subsystems, including two regression fixes (one for a recent regression and one for a problem introduced in 4.2). Specifics: - Two fixes for cpufreq regressions, an acpi-cpufreq driver one introduced during the 4.2 cycle when we started to preserve cpufreq directories for offline CPUs and a general one introduced recently (Srinivas Pandruvada). - Two devfreq fixes, one for a double kfree() in an error code path and one for a confusing sysfs-related failure (Geliang Tang, Tobias Jakobi)" * tag 'pm+acpi-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq: prevent lockup on reading scaling_available_frequencies cpufreq: acpi_cpufreq: prevent crash on reading freqdomain_cpus PM / devfreq: fix double kfree PM / devfreq: Fix governor_store()
2015-10-09Merge branch 'strscpy' of ↵Linus Torvalds1-0/+5
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile Pull strscpy powerpc fix from Chris Metcalf. Fix powerpc big-endian build. * 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: arch/powerpc: provide zero_bytemask() for big-endian
2015-10-09Merge tag 'sound-4.3-rc5' of ↵Linus Torvalds14-49/+67
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "We see various small fixes, but nothing looks too scary, all are small gentle bug fixes: - Most of changes are for ASoC codecs: Realtek, SGTL5000, TAS2552, TLV320, WM8962 - A couple of dwc and imx-ssi fixes - Usual oneliner HD-audio quirks - An old emux synth code fix" * tag 'sound-4.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: MAINTAINERS: Remove wm97xx entry ASoC: tas2552: fix dBscale-min declaration ALSA: synth: Fix conflicting OSS device registration on AWE32 ALSA: hda - Disable power_save_node for IDT 92HD73xx chips ALSA: hda - Apply SPDIF pin ctl to MacBookPro 12,1 ALSA: hda: Add dock support for ThinkPad T550 ASoC: dwc: fix dma stop transferring issue ASoC: dwc: correct irq clear method ASoC: tlv320aic3x: Prevent writing reserved registers on tlv320aic3104 CODECs ASoC: rt5645: Correct the naming and setting of ADC Boost Volume Control ASoC: sgtl5000: fix wrong register MIC_BIAS_VOLTAGE setup on probe ASoC: wm8962: balance pm_runtime_enable ASoC: imx-ssi: Fix DAI hardware signal inversions ASoC: sgtl5000: fix error message output for MicBias voltage ASoC: db1200: Fix DAI link format for db1300 and db1550
2015-10-09Merge tag 'clk-fixes-for-linus' of ↵Linus Torvalds4-25/+9
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk fixes from Stephen Boyd: "A Samsung driver fix and a handful of TI driver fixes" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk: ti: dflt: fix enable_reg validity check clk: ti: fix dual-registration of uart4_ick clk: ti: clk-7xx: Remove hardwired ABE clock configuration clk: samsung: fix cpu clock's flags checking
2015-10-09Merge tag 'mmc-v4.3-rc4' of git://git.linaro.org/people/ulf.hansson/mmcLinus Torvalds5-6/+22
Pull MMC fixes from Ulf Hansson: "MMC host: - omap_hsmmc: Fix boot regressions for omap4430 - omap_hsmmc: Fix legacy boot regression for omap3 - sdhci-pxav3: Fix some clock issues for Armada 38x - sdhci-pxav3: Fix error handling at probe - sdhci-of-at91: Fix clock stabilization problem" * tag 'mmc-v4.3-rc4' of git://git.linaro.org/people/ulf.hansson/mmc: mmc: sdhci-of-at91: use SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RST quirk mmc: sdhci: add quirk SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RST mmc: sdhci-pxav3: fix error handling of armada_38x_quirks mmc: sdhci-pxav3: disable clock inversion for HS MMC cards mmc: sdhci-pxav3: remove broken clock base quirk for Armada 38x sdhci driver mmc: host: omap_hsmmc: Fix MMC for omap3 legacy booting Revert "mmc: host: omap_hsmmc: use regulator_is_enabled to find pbias status"
2015-10-09Merge tag 'dm-4.3-fixes-2' of ↵Linus Torvalds9-27/+44
git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull dm fixes from Mike Snitzer: "Three stable fixes: - DM core AB-BA deadlock fix in the device destruction path (vs device creation's DM table swap). - DM raid fix to properly round up the region_size to the next power-of-2. - DM cache fix for a NULL pointer seen while switching from the "cleaner" cache policy. Two fixes for regressions introduced during the 4.3 merge: - request-based DM error propagation regressed due to incorrect changes introduced when adding the bi_error field to bio. - DM snapshot fix to only support snapshots that overflow if the client (e.g. lvm2) is prepared to deal with the associated snapshot status interface change" * tag 'dm-4.3-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm snapshot: add new persistent store option to support overflow dm cache: fix NULL pointer when switching from cleaner policy dm: fix request-based dm error reporting dm raid: fix round up of default region size dm: fix AB-BA deadlock in __dm_destroy()
2015-10-09Merge branch 'for-linus-4.3' of ↵Linus Torvalds7-17/+35
git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs fixes from Chris Mason: "These are small and assorted. Neil's is the oldest, I dropped the ball thinking he was going to send it in" * 'for-linus-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Btrfs: support NFSv2 export Btrfs: open_ctree: Fix possible memory leak Btrfs: fix deadlock when finalizing block group creation Btrfs: update fix for read corruption of compressed and shared extents Btrfs: send, fix corner case for reference overwrite detection
2015-10-09Merge tag 'nfsd-4.3-1' of git://linux-nfs.org/~bfields/linuxLinus Torvalds1-2/+4
Pull nfsd bugfix from Bruce Fields: "Just one RDMA bugfix" * tag 'nfsd-4.3-1' of git://linux-nfs.org/~bfields/linux: svcrdma: handle rdma read with a non-zero initial page offset
2015-10-09Merge tag 'fixes-for-linus' of ↵Linus Torvalds14-9/+41
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Arnd Bergmann: "The fixes for this week include one small patch that was years in the making and that finally fixes using all eight CPUs on exynos542x. The rest are lots of minor changes for sunxi, imx, exynos and shmobile - fixing the minimum voltage for Allwinner A20 - thermal boot issue on SMDK5250. - invalid clock used for FIMD IOMMU. - audio on Renesas r8a7790/r8a7791 - invalid clock used for FIMD IOMMU - LEDs on exynos5422-odroidxu3-common - usb pin control for imx-rex - imx53: fix PMIC interrupt level - a Makefile typo" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: dts: Fix wrong clock binding for sysmmu_fimd1_1 on exynos5420 ARM: dts: Fix bootup thermal issue on smdk5250 ARM: shmobile: r8a7791 dtsi: Add CPG/MSTP Clock Domain for sound ARM: shmobile: r8a7790 dtsi: Add CPG/MSTP Clock Domain for sound arm-cci500: Don't enable PMU driver by default ARM: dts: fix usb pin control for imx-rex dts ARM: imx53: qsrb: fix PMIC interrupt level ARM: imx53: include IRQ dt-bindings header ARM: dts: add suspend opp to exynos4412 ARM: dts: Fix LEDs on exynos5422-odroidxu3 ARM: EXYNOS: reset Little cores when cpu is up ARM: dts: Fix Makefile target for sun4i-a10-itead-iteaduino-plus ARM: dts: sunxi: Raise minimum CPU voltage for sun7i-a20 to meet SoC specifications
2015-10-09dm snapshot: add new persistent store option to support overflowMike Snitzer6-18/+37
Commit 76c44f6d80 introduced the possibly for "Overflow" to be reported by the snapshot device's status. Older userspace (e.g. lvm2) does not handle the "Overflow" status response. Fix this incompatibility by requiring newer userspace code, that can cope with "Overflow", request the persistent store with overflow support by using "PO" (Persistent with Overflow) for the snapshot store type. Reported-by: Zdenek Kabelac <zkabelac@redhat.com> Fixes: 76c44f6d80 ("dm snapshot: don't invalidate on-disk image on snapshot write overflow") Reviewed-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2015-10-09Merge branches 'pm-devfreq' and 'pm-cpufreq'Rafael J. Wysocki289-1624/+2532
* pm-devfreq: PM / devfreq: fix double kfree PM / devfreq: Fix governor_store() * pm-cpufreq: cpufreq: prevent lockup on reading scaling_available_frequencies cpufreq: acpi_cpufreq: prevent crash on reading freqdomain_cpus
2015-10-09irqdomain: Add an accessor for the of_node fieldMarc Zyngier1-0/+5
As we're about to remove the of_node field from the irqdomain structure, introduce an accessor for it. Subsequent patches will take care of the actual repainting. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Jason Cooper <jason@lakedaemon.net> Link: http://lkml.kernel.org/r/1444402211-1141-1-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-10-09genirq: Fix handle_bad_irq kerneldoc commentArnd Bergmann1-1/+0
A recent cleanup removed the 'irq' parameter from many functions, but left the documentation for this in place for at least one function. This removes it. Fixes: bd0b9ac405e1 ("genirq: Remove irq argument from irq flow handlers") Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Cc: Tony Lindgren <tony@atomide.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: kbuild-all@01.org Cc: Austin Schuh <austin@peloton-tech.com> Cc: Santosh Shilimkar <ssantosh@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/5400000.cD19rmgWjV@wuerfel Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-10-09genirq: Export handle_bad_irqArnd Bergmann1-0/+1
A cleanup of the omap gpio driver introduced a use of the handle_bad_irq() function in a device driver that can be a loadable module. This broke the ARM allmodconfig build: ERROR: "handle_bad_irq" [drivers/gpio/gpio-omap.ko] undefined! This patch exports the handle_bad_irq symbol in order to allow the use in modules. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Cc: Santosh Shilimkar <ssantosh@kernel.org> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Austin Schuh <austin@peloton-tech.com> Cc: Tony Lindgren <tony@atomide.com> Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/5847725.4IBopItaOr@wuerfel Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2015-10-09dm cache: fix NULL pointer when switching from cleaner policyJoe Thornber1-1/+1
The cleaner policy doesn't make use of the per cache block hint space in the metadata (unlike the other policies). When switching from the cleaner policy to mq or smq a NULL pointer crash (in dm_tm_new_block) was observed. The crash was caused by bugs in dm-cache-metadata.c when trying to skip creation of the hint btree. The minimal fix is to change hint size for the cleaner policy to 4 bytes (only hint size supported). Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org
2015-10-09crash in md-raid1 and md-raid10 due to incorrect list manipulationMikulas Patocka2-4/+4
The commit 55ce74d4bfe1b9444436264c637f39a152d1e5ac (md/raid1: ensure device failure recorded before write request returns) is causing crash in the LVM2 testsuite test shell/lvchange-raid.sh. For me the crash is 100% reproducible. The reason for the crash is that the newly added code in raid1d moves the list from conf->bio_end_io_list to tmp, then tests if tmp is non-empty and then incorrectly pops the bio from conf->bio_end_io_list (which is empty because the list was alrady moved). Raid-10 has a similar bug. Kernel Fault: Code=15 regs=000000006ccb8640 (Addr=0000000100000000) CPU: 3 PID: 1930 Comm: mdX_raid1 Not tainted 4.2.0-rc5-bisect+ #35 task: 000000006cc1f258 ti: 000000006ccb8000 task.ti: 000000006ccb8000 YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI PSW: 00001000000001001111111000001111 Not tainted r00-03 000000ff0804fe0f 000000001059d000 000000001059f818 000000007f16be38 r04-07 000000001059d000 000000007f16be08 0000000000200200 0000000000000001 r08-11 000000006ccb8260 000000007b7934d0 0000000000000001 0000000000000000 r12-15 000000004056f320 0000000000000000 0000000000013dd0 0000000000000000 r16-19 00000000f0d00ae0 0000000000000000 0000000000000000 0000000000000001 r20-23 000000000800000f 0000000042200390 0000000000000000 0000000000000000 r24-27 0000000000000001 000000000800000f 000000007f16be08 000000001059d000 r28-31 0000000100000000 000000006ccb8560 000000006ccb8640 0000000000000000 sr00-03 0000000000249800 0000000000000000 0000000000000000 0000000000249800 sr04-07 0000000000000000 0000000000000000 0000000000000000 0000000000000000 IASQ: 0000000000000000 0000000000000000 IAOQ: 000000001059f61c 000000001059f620 IIR: 0f8010c6 ISR: 0000000000000000 IOR: 0000000100000000 CPU: 3 CR30: 000000006ccb8000 CR31: 0000000000000000 ORIG_R28: 000000001059d000 IAOQ[0]: call_bio_endio+0x34/0x1a8 [raid1] IAOQ[1]: call_bio_endio+0x38/0x1a8 [raid1] RP(r2): raid_end_bio_io+0x88/0x168 [raid1] Backtrace: [<000000001059f818>] raid_end_bio_io+0x88/0x168 [raid1] [<00000000105a4f64>] raid1d+0x144/0x1640 [raid1] [<000000004017fd5c>] kthread+0x144/0x160 Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Fixes: 55ce74d4bfe1 ("md/raid1: ensure device failure recorded before write request returns.") Fixes: 95af587e95aa ("md/raid10: ensure device failure recorded before write request returns.") Signed-off-by: NeilBrown <neilb@suse.com>
2015-10-08cpufreq: prevent lockup on reading scaling_available_frequenciesSrinivas Pandruvada1-1/+3
When scaling_available_frequencies is read on an offlined cpu, then either lockup or junk values are displayed. This is caused by freed freq_table, which policy is using. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-10-08cpufreq: acpi_cpufreq: prevent crash on reading freqdomain_cpusSrinivas Pandruvada1-0/+3
When freqdomain_cpus attribute is read from an offlined cpu, it will cause crash. This change prevents calling cpufreq_show_cpus when policy driver_data is NULL. Crash info: [ 170.814949] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 [ 170.814990] IP: [<ffffffff813b2490>] _find_next_bit.part.0+0x10/0x70 [ 170.815021] PGD 227d30067 PUD 229e56067 PMD 0 [ 170.815043] Oops: 0000 [#2] SMP [ 170.816022] CPU: 3 PID: 3121 Comm: cat Tainted: G D OE 4.3.0-rc3+ #33 ... ... [ 170.816657] Call Trace: [ 170.816672] [<ffffffff813b2505>] ? find_next_bit+0x15/0x20 [ 170.816696] [<ffffffff8160e47c>] cpufreq_show_cpus+0x5c/0xd0 [ 170.816722] [<ffffffffa031a409>] show_freqdomain_cpus+0x19/0x20 [acpi_cpufreq] [ 170.816749] [<ffffffff8160e65b>] show+0x3b/0x60 [ 170.816769] [<ffffffff8129b31c>] sysfs_kf_seq_show+0xbc/0x130 [ 170.816793] [<ffffffff81299be3>] kernfs_seq_show+0x23/0x30 [ 170.816816] [<ffffffff81240f2c>] seq_read+0xec/0x390 [ 170.816837] [<ffffffff8129a64a>] kernfs_fop_read+0x10a/0x160 [ 170.816861] [<ffffffff8121d9b7>] __vfs_read+0x37/0x100 [ 170.816883] [<ffffffff813217c0>] ? security_file_permission+0xa0/0xc0 [ 170.816909] [<ffffffff8121e2e3>] vfs_read+0x83/0x130 [ 170.816930] [<ffffffff8121f035>] SyS_read+0x55/0xc0 ... ... [ 170.817185] ---[ end trace bc6eadf82b2b965a ]--- Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: 4.2+ <stable@vger.kernel.org> # 4.2+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-10-08mmc: sdhci-of-at91: use SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RST quirkludovic.desroches@atmel.com1-0/+1
The Atmel sdhci device needs the SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RST quirk. Without it, the internal clock could never stabilised when changing the sd clock frequency. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-08mmc: sdhci: add quirk SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RSTludovic.desroches@atmel.com2-0/+7
The Atmel sdhci device needs a new quirk. sdhci_set_clock set the Clock Control Register to 0 before computing the new value and writing it. It disables the internal clock which causes a reset mecanism. If we write the new value before this reset mecanism is done, it will prevent the stabilisation of the internal clock, so a delay is needed. This delay is about 2-3 cycles of the base clock. To be safe, a 1 ms delay is used. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-08mmc: sdhci-pxav3: fix error handling of armada_38x_quirksMarcin Wojtas1-1/+1
In case of armada_38x_quirks error, all clocks should be cleaned-up, same as after mv_conf_mbus_windows failure. Signed-off-by: Marcin Wojtas <mw@semihalf.com> Cc: <stable@vger.kernel.org> # v4.2 Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-08mmc: sdhci-pxav3: disable clock inversion for HS MMC cardsNadav Haklai1-0/+3
According to 'FE-2946959' erratum the clock inversion option is needed to support slow frequencies when the card input hold time requirement is high. This setting is not required for high speed MMC and might cause timing violation. Signed-off-by: Nadav Haklai <nadavh@marvell.com> Cc: <stable@vger.kernel.org> # v4.2 Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-08mmc: sdhci-pxav3: remove broken clock base quirk for Armada 38x sdhci driverNadav Haklai1-0/+1
shci-pxav3 driver is enabling by default the SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN quirk. However this quirk is not required for Armada 38x and leads to wrong clock setting in the divider. Signed-off-by: Nadav Haklai <nadavh@marvell.com> Signed-off-by: Marcin Wojtas <mw@semihalf.com> Cc: <stable@vger.kernel.org> # v4.2 Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-08arch/powerpc: provide zero_bytemask() for big-endianChris Metcalf1-0/+5
For some reason, only the little-endian flavor of powerpc provided the zero_bytemask() implementation. Reported-by: Michal Sojka <sojkam1@fel.cvut.cz> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
2015-10-08mmc: host: omap_hsmmc: Fix MMC for omap3 legacy bootingTony Lindgren1-3/+3
Starting with commit 7d607f917008 ("mmc: host: omap_hsmmc: use devm_regulator_get_optional() for vmmc") MMC on omap3 stopped working for legacy booting. This is because legacy booting sets up some of the resource in the platform init code, and for optional regulators always seem to return -EPROBE_DEFER for the legacy booting. Let's fix the issue by checking for device tree based booting for now. Then when omap3 boots in device tree only mode, this patch can be just reverted. Fixes: 7d607f917008 ("mmc: host: omap_hsmmc: use devm_regulator_get_optional() for vmmc") Cc: Felipe Balbi <balbi@ti.com> Cc: Kishon Vijay Abraham I <kishon@ti.com> Cc: Nishanth Menon <nm@ti.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-08Revert "mmc: host: omap_hsmmc: use regulator_is_enabled to find pbias status"Tony Lindgren1-2/+6
This reverts commit c55d7a0553643a7e8f120688b82b594471084d3c. Without reverting this commit we get "unbalanced disables for pbias_mmc_omap4" errors on omap4430. It seems that 4430 and 4460 behave in a different way for the PBIAS regulator registers and until that has been debugged further we cannot rely on the regulator status registers in hardare on 4430. Fixes: 7d607f917008 ("mmc: host: omap_hsmmc: use devm_regulator_get_optional() for vmmc") Cc: Felipe Balbi <balbi@ti.com> Cc: Kishon Vijay Abraham I <kishon@ti.com> Cc: Nishanth Menon <nm@ti.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-10-07swiotlb: Enable it under x86 PAEChristian Melki1-0/+1
Most distributions end up enabling SWIOTLB already with 32-bit kernels due to the combination of CONFIG_HYPERVISOR_GUEST|CONFIG_XEN=y as those end up requiring the SWIOTLB. However for those that are not interested in virtualization and run in 32-bit they will discover that: "32-bit PAE 4.2.0 kernel (no IOMMU code) would hang when writing to my USB disk. The kernel spews million(-ish messages per sec) to syslog, effectively "hanging" userspace with my kernel. Oct 2 14:33:06 voodoochild kernel: [ 223.287447] nommu_map_sg: overflow 25dcac000+1024 of device mask ffffffff Oct 2 14:33:06 voodoochild kernel: [ 223.287448] nommu_map_sg: overflow 25dcac000+1024 of device mask ffffffff Oct 2 14:33:06 voodoochild kernel: [ 223.287449] nommu_map_sg: overflow 25dcac000+1024 of device mask ffffffff ... etc ..." Enabling it makes the problem go away. N.B. With a6dfa128ce5c414ab46b1d690f7a1b8decb8526d "config: Enable NEED_DMA_MAP_STATE by default when SWIOTLB is selected" we also have the important part of the SG macros enabled to make this work properly - in case anybody wants to backport this patch. Reported-and-Tested-by: Christian Melki <christian.melki@t2data.com> Signed-off-by: Christian Melki <christian.melki@t2data.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2015-10-07Merge tag 'asoc-fix-v4.3-rc4' of ↵sound-4.3-rc5Takashi Iwai696-4157/+7399
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Fixes for v4.3 Quite a few fixes here but they're all very small and driver specific, none of them really stand out if you aren't using the relevant hardware but they're all useful if you do happen to have an affected device.
2015-10-073w-9xxx: don't unmap bounce buffered commandsChristoph Hellwig1-7/+21
3w controller don't dma map small single SGL entry commands but instead bounce buffer them. Add a helper to identify these commands and don't call scsi_dma_unmap for them. Based on an earlier patch from James Bottomley. Fixes: 118c85 ("3w-9xxx: fix command completion race") Reported-by: Tóth Attila <atoth@atoth.sote.hu> Tested-by: Tóth Attila <atoth@atoth.sote.hu> Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Adam Radford <aradford@gmail.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 23:04:00 +0000