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2016-04-10Merge branch 'i2c/for-current' of ↵Linus Torvalds-17/+12
git:// Pull i2c fixes from Wolfram Sang: "Some bugfixes from I2C: - fix a uevent triggered boot problem by removing a useless debug print - fix sysfs-attributes of the new i2c-demux-pinctrl driver to follow standard kernel behaviour - fix a potential division-by-zero error (needed two takes)" * 'i2c/for-current' of git:// i2c: jz4780: really prevent potential division by zero Revert "i2c: jz4780: prevent potential division by zero" i2c: jz4780: prevent potential division by zero i2c: mux: demux-pinctrl: Update docs to new sysfs-attributes i2c: mux: demux-pinctrl: Clean up sysfs attributes i2c: prevent endless uevent loop with CONFIG_I2C_DEBUG_CORE
2016-04-09Merge tag 'pm+acpi-4.6-rc3' of ↵Linus Torvalds-0/+4
git:// Pull power management and ACPI fixes from Rafael Wysocki: "Fixes for some issues discovered after recent changes and for some that have just been found lately regardless of those changes (intel_pstate, intel_idle, PM core, mailbox/pcc, turbostat) plus support for some new CPU models (intel_idle, Intel RAPL driver, turbostat) and documentation updates (intel_pstate, PM core). Specifics: - intel_pstate fixes for two issues exposed by the recent switch over from using timers and for one issue introduced during the 4.4 cycle plus new comments describing data structures used by the driver (Rafael Wysocki, Srinivas Pandruvada). - intel_idle fixes related to CPU offline/online (Richard Cochran). - intel_idle support (new CPU IDs and state definitions mostly) for Skylake-X and Kabylake processors (Len Brown). - PCC mailbox driver fix for an out-of-bounds memory access that may cause the kernel to panic() (Shanker Donthineni). - New (missing) CPU ID for one apparently overlooked Haswell model in the Intel RAPL power capping driver (Srinivas Pandruvada). - Fix for the PM core's wakeup IRQs framework to make it work after wakeup settings reconfiguration from sysfs (Grygorii Strashko). - Runtime PM documentation update to make it describe what needs to be done during device removal more precisely (Krzysztof Kozlowski). - Stale comment removal cleanup in the cpufreq-dt driver (Viresh Kumar). - turbostat utility fixes and support for Broxton, Skylake-X and Kabylake processors (Len Brown)" * tag 'pm+acpi-4.6-rc3' of git:// (28 commits) PM / wakeirq: fix wakeirq setting after wakup re-configuration from sysfs tools/power turbostat: work around RC6 counter wrap tools/power turbostat: initial KBL support tools/power turbostat: initial SKX support tools/power turbostat: decode BXT TSC frequency via CPUID tools/power turbostat: initial BXT support tools/power turbostat: print IRTL MSRs tools/power turbostat: SGX state should print only if --debug intel_idle: Add KBL support intel_idle: Add SKX support intel_idle: Clean up all registered devices on exit. intel_idle: Propagate hot plug errors. intel_idle: Don't overreact to a cpuidle registration failure. intel_idle: Setup the timer broadcast only on successful driver load. intel_idle: Avoid a double free of the per-CPU data. intel_idle: Fix dangling registration on error path. intel_idle: Fix deallocation order on the driver exit path. intel_idle: Remove redundant initialization calls. intel_idle: Fix a helper function's return value. intel_idle: remove useless return from void function. ...
2016-04-07i2c: mux: demux-pinctrl: Update docs to new sysfs-attributesWolfram Sang-17/+12
Update the docs according to the recent code changes, too. Fixes: c0c508a418f9da ("i2c: mux: demux-pinctrl: Clean up sysfs attributes") Signed-off-by: Wolfram Sang <> Signed-off-by: Wolfram Sang <>
2016-04-05Merge tag 'pinctrl-v4.6-2' of ↵Linus Torvalds-6/+6
git:// Pull pin control fixes from Linus Walleij: "Here is a set of pin control fixes for the v4.6 series. A bit bigger than what I hoped for, but all fixes are confined to drivers, a few of them also targeted to stable. Summary: - On Super-H PFC (Renesas) controllers: only use dummies on legacy systems. This fixes a serious ethernet regression on a Renesas board. - Pistachio: Fix errors in the pin table. - Allwinner SunXi: fix the external interrupts to work. - Intel: fix so the high level interrupts start working, and fix a spurious interrupt issue. - Qualcomm ipq4019: fix the number of GPIOs provided (bump to 100), correct register offsets and handle GPIO mode properly. - Revert the revert on the revert so that Xway has a .to_irq() callback again. - Minor fixes to errorpaths and debug info. - A MAINTAINERS update" * tag 'pinctrl-v4.6-2' of git:// Revert "Revert "pinctrl: lantiq: Implement gpio_chip.to_irq"" pinctrl: qcom: ipq4019: fix register offsets pinctrl: qcom: ipq4019: fix the function enum for gpio mode pinctrl: qcom: ipq4019: set ngpios to correct value pinctrl: nomadik: fix pull debug print inversion MAINTAINERS: pinctrl: samsung: Add two new maintainers pinctrl: intel: implement gpio_irq_enable pinctrl: intel: make the high level interrupt working pinctrl: freescale: imx: fix bogus check of of_iomap() return value pinctrl: sunxi: Fix A33 external interrupts not working pinctrl: pistachio: fix mfio84-89 function description and pinmux. pinctrl: sh-pfc: only use dummy states for non-DT platforms
2016-04-05PM / runtime: Document steps for device removalKrzysztof Kozlowski-0/+4
Put a reminder that during device removal drivers should revert all PM runtime changes from the probe. Signed-off-by: Krzysztof Kozlowski <> Acked-by: Alan Stern <> Signed-off-by: Rafael J. Wysocki <>
2016-04-04Merge branch 'upstream' of git:// Torvalds-3/+3
Pull MIPS fixes from Ralf Baechle: "This is the first round of MIPS fixes for 4.6: - Fix spelling mistakes all over arch/mips - Provide __bswapsi2 so XZ kernel compression will build with older GCC - ATH79 clock fixes. - Fix clock-rated copy-paste erros in ATH79 DTS. - Fix gisb-arb compatible string for 7435 BMIPS - Enable NAND and UBIFS support in CI20. - Fix BUG() assertion caused by inapropriate smp_processor_id() use. - Fix exception handling issues for the sake of debuggers - Fix the last remaining instance of irq_to_gpio in the db1xxx_ss PCMCIA code - Fix MSA unaligned load failures - Panic if kernel is configured for a not TLB-supported page size - Bail out on unsupported relocs in modules. - Partial fix for Qemu breakage after recent IPI rewrite - Wire up the preadv2 and pwrite2 syscalls - Fix the ar724x clock calculation" * 'upstream' of git:// MIPS: traps.c: Verify the ISA for microMIPS RDHWR emulation MIPS: BMIPS: Fix gisb-arb compatible string for 7435 MIPS: Bail on unsupported module relocs MIPS: dts: qca: ar9132_tl_wr1043nd_v1.dts: use "ref" for reference clock name MIPS: ath79: Fix the ar913x reference clock rate MIPS: ath79: Fix the ar724x clock calculation dt-bindings: clock: qca,ath79-pll: fix copy-paste typos MIPS: traps: Correct the SIGTRAP debug ABI in `do_watch' and `do_trap_or_bp' FIRMWARE: Broadcom: Fix grammar of warning messages in bcm47xx_sprom.c. MIPS: ci20: Enable NAND and UBIFS support in defconfig. MIPS: Fix misspellings in comments. MIPS: tlb-r4k: panic if the MMU doesn't support PAGE_SIZE MIPS: zboot: Remove copied source files on clean MIPS: zboot: Fix the build with XZ compression on older GCC versions MIPS: Wire up preadv2 and pwrite2 syscalls. MIPS: cpu_name_string: Use raw_smp_processor_id(). pcmcia: db1xxx_ss: fix last irq_to_gpio user MIPS: Fix MSA ld unaligned failure cases MIPS: Fix broken malta qemu
2016-04-04Merge branch 'PAGE_CACHE_SIZE-removal'Linus Torvalds-4/+4
Merge PAGE_CACHE_SIZE removal patches from Kirill Shutemov: "PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time ago with promise that one day it will be possible to implement page cache with bigger chunks than PAGE_SIZE. This promise never materialized. And unlikely will. Let's stop pretending that pages in page cache are special. They are not. The first patch with most changes has been done with coccinelle. The second is manual fixups on top. The third patch removes macros definition" [ I was planning to apply this just before rc2, but then I spaced out, so here it is right _after_ rc2 instead. As Kirill suggested as a possibility, I could have decided to only merge the first two patches, and leave the old interfaces for compatibility, but I'd rather get it all done and any out-of-tree modules and patches can trivially do the converstion while still also working with older kernels, so there is little reason to try to maintain the redundant legacy model. - Linus ] * PAGE_CACHE_SIZE-removal: mm: drop PAGE_CACHE_* and page_cache_{get,release} definition mm, fs: remove remaining PAGE_CACHE_* and page_cache_{get,release} usage mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros
2016-04-04mm, fs: remove remaining PAGE_CACHE_* and page_cache_{get,release} usageKirill A. Shutemov-4/+4
Mostly direct substitution with occasional adjustment or removing outdated comments. Signed-off-by: Kirill A. Shutemov <> Acked-by: Michal Hocko <> Signed-off-by: Linus Torvalds <>
2016-04-03Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds-0/+208
git:// Pull x86 fixes from Thomas Gleixner: "This lot contains: - Some fixups for the fallout of the topology consolidation which unearthed AMD/Intel inconsistencies - Documentation for the x86 topology management - Support for AMD advanced power management bits - Two simple cleanups removing duplicated code" * 'x86-urgent-for-linus' of git:// x86/cpu: Add advanced power management bits x86/thread_info: Merge two !__ASSEMBLY__ sections x86/cpufreq: Remove duplicated TDP MSR macro definitions x86/Documentation: Start documenting x86 topology x86/cpu: Get rid of compute_unit_id perf/x86/amd: Cleanup Fam10h NB event constraints x86/topology: Fix AMD core count
2016-04-03dt-bindings: clock: qca,ath79-pll: fix copy-paste typosAntony Pavlov-3/+3
Signed-off-by: Antony Pavlov <> Acked-by: Rob Herring <> Cc: Alban Bedel <> Cc: Ralf Baechle <> Cc: Cc: Patchwork: Signed-off-by: Ralf Baechle <>
2016-04-01Merge git:// Torvalds-1/+1
Pull networking fixes from David Miller: 1) Missing device reference in IPSEC input path results in crashes during device unregistration. From Subash Abhinov Kasiviswanathan. 2) Per-queue ISR register writes not being done properly in macb driver, from Cyrille Pitchen. 3) Stats accounting bugs in bcmgenet, from Patri Gynther. 4) Lightweight tunnel's TTL and TOS were swapped in netlink dumps, from Quentin Armitage. 5) SXGBE driver has off-by-one in probe error paths, from Rasmus Villemoes. 6) Fix race in save/swap/delete options in netfilter ipset, from Vishwanath Pai. 7) Ageing time of bridge not set properly when not operating over a switchdev device. Fix from Haishuang Yan. 8) Fix GRO regression wrt nested FOU/GUE based tunnels, from Alexander Duyck. 9) IPV6 UDP code bumps wrong stats, from Eric Dumazet. 10) FEC driver should only access registers that actually exist on the given chipset, fix from Fabio Estevam. * git:// (73 commits) net: mvneta: fix changing MTU when using per-cpu processing stmmac: fix MDIO settings Revert "stmmac: Fix 'eth0: No PHY found' regression" stmmac: fix TX normal DESC net: mvneta: use cache_line_size() to get cacheline size net: mvpp2: use cache_line_size() to get cacheline size net: mvpp2: fix maybe-uninitialized warning tun, bpf: fix suspicious RCU usage in tun_{attach, detach}_filter net: usb: cdc_ncm: adding Telit LE910 V2 mobile broadband card rtnl: fix msg size calculation in if_nlmsg_size() fec: Do not access unexisting register in Coldfire net: mvneta: replace MVNETA_CPU_D_CACHE_LINE_SIZE with L1_CACHE_BYTES net: mvpp2: replace MVPP2_CPU_D_CACHE_LINE_SIZE with L1_CACHE_BYTES net: dsa: mv88e6xxx: Clear the PDOWN bit on setup net: dsa: mv88e6xxx: Introduce _mv88e6xxx_phy_page_{read, write} bpf: make padding in bpf_tunnel_key explicit ipv6: udp: fix UDP_MIB_IGNOREDMULTI updates bnxt_en: Fix ethtool -a reporting. bnxt_en: Fix typo in bnxt_hwrm_set_pause_common(). bnxt_en: Implement proper firmware message padding. ...
2016-03-30pinctrl: pistachio: fix mfio84-89 function description and pinmux.Govindraj Raja-6/+6
mfio 84 to 89 are described wrongly, fix it to describe the right pin and add them to right pin-mux group. The correct order is: pll1_lock => mips_pll -- MFIO_83 pll2_lock => audio_pll -- MFIO_84 pll3_lock => rpu_v_pll -- MFIO_85 pll4_lock => rpu_l_pll -- MFIO_86 pll5_lock => sys_pll -- MFIO_87 pll6_lock => wifi_pll -- MFIO_88 pll7_lock => bt_pll -- MFIO_89 Cc: Cc: Cc: Cc: James Hartley <> Cc: <> # v4.2+ Fixes: cefc03e5995e("pinctrl: Add Pistachio SoC pin control driver") Signed-off-by: Govindraj Raja <> Acked-by: Andrew Bresticker <> Acked-by: Rob Herring <> Signed-off-by: Linus Walleij <>
2016-03-29x86/Documentation: Start documenting x86 topologyBorislav Petkov-0/+208
This should contain important aspects of how we represent the system topology on x86. If people have questions about it and this file doesn't answer it, then it must be updated. Signed-off-by: Borislav Petkov <> Link: Signed-off-by: Thomas Gleixner <>
2016-03-26Merge tag 'ofs-pull-tag-1' of ↵Linus Torvalds-0/+493
git:// Pull orangefs filesystem from Mike Marshall. This finally merges the long-pending orangefs filesystem, which has been much cleaned up with input from Al Viro over the last six months. From the documentation file: "OrangeFS is an LGPL userspace scale-out parallel storage system. It is ideal for large storage problems faced by HPC, BigData, Streaming Video, Genomics, Bioinformatics. Orangefs, originally called PVFS, was first developed in 1993 by Walt Ligon and Eric Blumer as a parallel file system for Parallel Virtual Machine (PVM) as part of a NASA grant to study the I/O patterns of parallel programs. Orangefs features include: - Distributes file data among multiple file servers - Supports simultaneous access by multiple clients - Stores file data and metadata on servers using local file system and access methods - Userspace implementation is easy to install and maintain - Direct MPI support - Stateless" see Documentation/filesystems/orangefs.txt for more in-depth details. * tag 'ofs-pull-tag-1' of git:// (174 commits) orangefs: fix orangefs_superblock locking orangefs: fix do_readv_writev() handling of error halfway through orangefs: have ->kill_sb() evict the VFS side of things first orangefs: sanitize ->llseek() orangefs-bufmap.h: trim unused junk orangefs: saner calling conventions for getting a slot orangefs_copy_{to,from}_bufmap(): don't pass bufmap pointer orangefs: get rid of readdir_handle_s ornagefs: ensure that truncate has an up to date inode size orangefs: move code which sets i_link to orangefs_inode_getattr orangefs: remove needless wrapper around GFP_KERNEL orangefs: remove wrapper around mutex_lock(&inode->i_mutex) orangefs: refactor inode type or link_target change detection orangefs: use new getattr for revalidate and remove old getattr orangefs: use new getattr in inode getattr and permission orangefs: use new orangefs_inode_getattr to get size in write and llseek orangefs: use new orangefs_inode_getattr to create new inodes orangefs: rename orangefs_inode_getattr to orangefs_inode_old_getattr orangefs: remove inode->i_lock wrapper orangefs: put register_chrdev immediately before register_filesystem ...
2016-03-26Merge tag 'scsi-misc' of git:// Torvalds-0/+3
Pull more SCSI updates from James Bottomley: "The only new stuff which missed the first pull request is an update to the UFS driver. The rest is an assortment of bug fixes and minor tweaks which appeared recently (some are fixes for recent code and some are stuff spotted recently by the checkers or the new gcc-6 compiler [most of Arnd's stuff])" * tag 'scsi-misc' of git:// (32 commits) scsi_common: do not clobber fixed sense information scsi: ufs: select CONFIG_NLS scsi: fc: use get/put_unaligned64 for wwn access fnic: move printk()s outside of the critical code section. qla2xxx: avoid maybe_uninitialized warning megaraid_sas: add missing curly braces in ioctl handler lpfc: fix misleading indentation scsi_transport_sas: add 'scsi_target_id' sysfs attribute scsi_dh_alua: uninitialized variable in alua_check_vpd() scsi: ufs-qcom: add printouts of testbus debug registers scsi: ufs-qcom: enable/disable the device ref clock scsi: ufs-qcom: set PA_Local_TX_LCC_Enable before link startup scsi: ufs: add device quirk delay before putting UFS rails in LPM scsi: ufs: fix leakage during link off state scsi: ufs: tune UniPro parameters to optimize hibern8 exit time scsi: ufs: handle non spec compliant bkops behaviour by device scsi: ufs: add retry for query descriptors scsi: ufs: add error recovery after DL NAC error scsi: ufs: make error handling bit faster scsi: ufs: disable vccq if it's not needed by UFS device ...
2016-03-25mm, kasan: SLAB supportAlexander Potapenko-3/+2
Add KASAN hooks to SLAB allocator. This patch is based on the "mm: kasan: unified support for SLUB and SLAB allocators" patch originally prepared by Dmitry Chernenkov. Signed-off-by: Alexander Potapenko <> Cc: Christoph Lameter <> Cc: Pekka Enberg <> Cc: David Rientjes <> Cc: Joonsoo Kim <> Cc: Andrey Konovalov <> Cc: Dmitry Vyukov <> Cc: Andrey Ryabinin <> Cc: Steven Rostedt <> Cc: Konstantin Serebryany <> Cc: Dmitry Chernenkov <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
2016-03-25Merge branch 'drm-next' of git:// Torvalds-5/+6
Pull drm fixes from Dave Airlie: "Just a couple of dma-buf related fixes and some amdgpu fixes, along with a regression fix for radeon off but default feature, but makes my 30" monitor happy again" * 'drm-next' of git:// drm/radeon/mst: cleanup code indentation drm/radeon/mst: fix regression in lane/link handling. drm/amdgpu: add invalidate_page callback for userptrs drm/amdgpu: Revert "remove the userptr rmn->lock" drm/amdgpu: clean up path handling for powerplay drm/amd/powerplay: fix memory leak of tdp_table dma-buf/fence: fix fence_is_later v2 dma-buf: Update docs for SYNC ioctl drm: remove excess description dma-buf, drm, ion: Propagate error code from dma_buf_start_cpu_access() drm/atmel-hlcdc: use helper to get crtc state drm/atomic: use helper to get crtc state
2016-03-24Merge tag 'pm+acpi-4.6-rc1-2' of ↵Linus Torvalds-0/+80
git:// Pull more power management and ACPI updates from Rafael Wysocki: "The second batch of power management and ACPI updates for v4.6. Included are fixups on top of the previous PM/ACPI pull request and other material that didn't make into it but still should go into 4.6. Among other things, there's a fix for an intel_pstate driver issue uncovered by recent cpufreq changes, a workaround for a boot hang on Skylake-H related to the handling of deep C-states by the platform and a PCI/ACPI fix for the handling of IO port resources on non-x86 architectures plus some new device IDs and similar. Specifics: - Fix for an intel_pstate driver issue related to the handling of MSR updates uncovered by the recent cpufreq rework (Rafael Wysocki). - cpufreq core cleanups related to starting governors and frequency synchronization during resume from system suspend and a locking fix for cpufreq_quick_get() (Rafael Wysocki, Richard Cochran). - acpi-cpufreq and powernv cpufreq driver updates (Jisheng Zhang, Michael Neuling, Richard Cochran, Shilpasri Bhat). - intel_idle driver update preventing some Skylake-H systems from hanging during initialization by disabling deep C-states mishandled by the platform in the problematic configurations (Len Brown). - Intel Xeon Phi Processor x200 support for intel_idle (Dasaratharaman Chandramouli). - cpuidle menu governor updates to make it always honor PM QoS latency constraints (and prevent C1 from being used as the fallback C-state on x86 when they are set below its exit latency) and to restore the previous behavior to fall back to C1 if the next timer event is set far enough in the future that was changed in 4.4 which led to an energy consumption regression (Rik van Riel, Rafael Wysocki). - New device ID for a future AMD UART controller in the ACPI driver for AMD SoCs (Wang Hongcheng). - Rockchip rk3399 support for the rockchip-io-domain adaptive voltage scaling (AVS) driver (David Wu). - ACPI PCI resources management fix for the handling of IO space resources on architectures where the IO space is memory mapped (IA64 and ARM64) broken by the introduction of common ACPI resources parsing for PCI host bridges in 4.4 (Lorenzo Pieralisi). - Fix for the ACPI backend of the generic device properties API to make it parse non-device (data node only) children of an ACPI device correctly (Irina Tirdea). - Fixes for the handling of global suspend flags (introduced in 4.4) during hibernation and resume from it (Lukas Wunner). - Support for obtaining configuration information from Device Trees in the PM clocks framework (Jon Hunter). - ACPI _DSM helper code and devfreq framework cleanups (Colin Ian King, Geert Uytterhoeven)" * tag 'pm+acpi-4.6-rc1-2' of git:// (23 commits) PM / AVS: rockchip-io: add io selectors and supplies for rk3399 intel_idle: Support for Intel Xeon Phi Processor x200 Product Family intel_idle: prevent SKL-H boot failure when C8+C9+C10 enabled ACPI / PM: Runtime resume devices when waking from hibernate PM / sleep: Clear pm_suspend_global_flags upon hibernate cpufreq: governor: Always schedule work on the CPU running update cpufreq: Always update current frequency before startig governor cpufreq: Introduce cpufreq_update_current_freq() cpufreq: Introduce cpufreq_start_governor() cpufreq: powernv: Add sysfs attributes to show throttle stats cpufreq: acpi-cpufreq: make Intel/AMD MSR access, io port access static PCI: ACPI: IA64: fix IO port generic range check ACPI / util: cast data to u64 before shifting to fix sign extension cpufreq: powernv: Define per_cpu chip pointer to optimize hot-path cpuidle: menu: Fall back to polling if next timer event is near cpufreq: acpi-cpufreq: Clean up hot plug notifier callback intel_pstate: Do not call wrmsrl_on_cpu() with disabled interrupts cpufreq: Make cpufreq_quick_get() safe to call ACPI / property: fix data node parsing in acpi_get_next_subnode() ACPI / APD: Add device HID for future AMD UART controller ...
2016-03-24Merge tag 'rtc-4.6-2' of ↵Linus Torvalds-0/+11
git:// Pull more RTC updates from Alexandre Belloni: "A second pull request for v4.6 with a few fixesi before -rc1. The new features for abx80x actually make the RTC behave correctly. Drivers: - abx80x: handle both XT and RC oscillators, XT failure bit and autocalibration - m41t80: avoid out of range year values - rv8803: workaround an i2c HW issue" * tag 'rtc-4.6-2' of git:// rtc: abx80x: handle the oscillator failure bit rtc: abx80x: handle autocalibration rtc: rv8803: workaround i2c HW issue rtc: mcp795: add devicetree support rtc: asm9260: remove incorrect __init/__exit annotations rtc: m41t80: avoid out of range year values rtc: s3c: Don't print an error on probe deferral rtc: rv3029: stop mentioning rv3029c2
2016-03-24Merge tag 'for-linus-20160324' of git:// Torvalds-14/+108
Pull MTD updates from Brian Norris: "NAND: - Add sunxi_nand randomizer support - begin refactoring NAND ecclayout structs - fix pxa3xx_nand dmaengine usage - brcmnand: fix support for v7.1 controller - add Qualcomm NAND controller driver SPI NOR: - add new ls1021a, ls2080a support to Freescale QuadSPI - add new flash ID entries - support bottom-block protection for Winbond flash - support Status Register Write Protect - remove broken QPI support for Micron SPI flash JFFS2: - improve post-mount CRC scan efficiency General: - refactor bcm63xxpart parser, to later extend for NAND - add writebuf size parameter to mtdram Other minor code quality improvements" * tag 'for-linus-20160324' of git:// (72 commits) mtd: nand: remove kerneldoc for removed function parameter mtd: nand: Qualcomm NAND controller driver dt/bindings: qcom_nandc: Add DT bindings mtd: nand: don't select chip in nand_chip's block_bad op mtd: spi-nor: support lock/unlock for a few Winbond chips mtd: spi-nor: add TB (Top/Bottom) protect support mtd: spi-nor: add SPI_NOR_HAS_LOCK flag mtd: spi-nor: use BIT() for flash_info flags mtd: spi-nor: disallow further writes to SR if WP# is low mtd: spi-nor: make lock/unlock bounds checks more obvious and robust mtd: spi-nor: silently drop lock/unlock for already locked/unlocked region mtd: spi-nor: wait for SR_WIP to clear on initial unlock mtd: nand: simplify nand_bch_init() usage mtd: mtdswap: remove useless if (!mtd->ecclayout) test mtd: create an mtd_oobavail() helper and make use of it mtd: kill the ecclayout->oobavail field mtd: nand: check status before reporting timeout mtd: bcm63xxpart: give width specifier an 'int', not 'size_t' mtd: mtdram: Add parameter for setting writebuf size mtd: nand: pxa3xx_nand: kill unused field 'drcmr_cmd' ...
2016-03-24Merge tag 'nfsd-4.6-1' of git:// Torvalds-0/+23
Pull more nfsd updates from Bruce Fields: "Apologies for the previous request, which omitted the top 8 commits from my for-next branch (including the SCSI layout commits). Thanks to Trond for spotting my error!" This actually includes the new layout types, so here's that part of the pull message repeated: "Support for a new pnfs layout type from Christoph Hellwig. The new layout type is a variant of the block layout which uses SCSI features to offer improved fencing and device identification. Note this pull request also includes the client side of SCSI layout, with Trond's permission" * tag 'nfsd-4.6-1' of git:// nfsd: use short read as well as i_size to set eof nfsd: better layoutupdate bounds-checking nfsd: block and scsi layout drivers need to depend on CONFIG_BLOCK nfsd: add SCSI layout support nfsd: move some blocklayout code nfsd: add a new config option for the block layout driver nfs/blocklayout: add SCSI layout support nfs4.h: add SCSI layout definitions
2016-03-24Merge tag 'armsoc-dt2' of ↵Linus Torvalds-0/+2
git:// Pull more ARM DT changes from Arnd Bergmann: "Here are some final updates for ARM SoC specific dts files: - The i.MX changes were sent relatively late, and had a dependency on the clk tree, so I delayed that a bit. Support for the new i.MX6qp SoC and a couple of new boards is added in this branch. - Uniphier renames a few files to match the final product names that were decided by the company, kudos to the kernel developer(s) for getting support upstream before the product release. Also two boards are added. The patches were posted early enough and nice overall, but we forgot to apply them and decided to give it some more time in linux-next - at91 has two small bug fixes" * tag 'armsoc-dt2' of git:// (83 commits) ARM: dts: at91: sama5d4 Xplained: don't disable hsmci regulator ARM: dts: at91: sama5d3 Xplained: don't disable hsmci regulator ARM: dts: uniphier: add pinmux node for I2C ch4 ARM: dts: uniphier: add @{address} to EEPROM node ARM: dts: uniphier: add PH1-Pro4 Sanji board support ARM: dts: uniphier: add PH1-Pro4 Ace board support ARM: dts: uniphier: enable I2C channel 2 of ProXstream2 Gentil board ARM: dts: uniphier: add EEPROM node for ProXstream2 Gentil board ARM: dts: uniphier: add reference clock nodes ARM: dts: uniphier: rework UniPhier System Bus nodes ARM: dts: uniphier: factor out ranges property of support card arm64: dts: uniphier: rename PH1-LD10 to PH1-LD20 ARM: dts: imx53-qsb: Fix gpio button polarity ARM: dts: vfxxx: Add DAC node for Vybrid SoC ARM: dts: imx6q: add missing links between ipu2 and mipi dsi ARM: dts: imx: Add support for Advantech/GE B850v3 ARM: dts: imx: Add support for Advantech/GE B650v3 ARM: dts: imx: Add support for Advantech/GE B450v3 ARM: dts: imx: Add support for Advantech/GE Bx50v3 ARM: dts: imx: Add Advantech BA-16 Qseven module ...
2016-03-25Merge branches 'pm-avs', 'pm-clk', 'pm-devfreq' and 'pm-sleep'Rafael J. Wysocki-0/+11
* pm-avs: PM / AVS: rockchip-io: add io selectors and supplies for rk3399 * pm-clk: PM / clk: Add support for obtaining clocks from device-tree * pm-devfreq: PM / devfreq: Spelling s/frequnecy/frequency/ * pm-sleep: ACPI / PM: Runtime resume devices when waking from hibernate PM / sleep: Clear pm_suspend_global_flags upon hibernate
2016-03-25Merge branches 'pm-cpufreq' and 'pm-cpuidle'Rafael J. Wysocki-0/+69
* pm-cpufreq: cpufreq: governor: Always schedule work on the CPU running update cpufreq: Always update current frequency before startig governor cpufreq: Introduce cpufreq_update_current_freq() cpufreq: Introduce cpufreq_start_governor() cpufreq: powernv: Add sysfs attributes to show throttle stats cpufreq: acpi-cpufreq: make Intel/AMD MSR access, io port access static cpufreq: powernv: Define per_cpu chip pointer to optimize hot-path cpufreq: acpi-cpufreq: Clean up hot plug notifier callback intel_pstate: Do not call wrmsrl_on_cpu() with disabled interrupts cpufreq: Make cpufreq_quick_get() safe to call * pm-cpuidle: intel_idle: Support for Intel Xeon Phi Processor x200 Product Family intel_idle: prevent SKL-H boot failure when C8+C9+C10 enabled cpuidle: menu: Fall back to polling if next timer event is near cpuidle: menu: use high confidence factors only when considering polling
2016-03-24switchdev: fix typo in comments/docNicolas Dichtel-1/+1
Two minor typo. Signed-off-by: Nicolas Dichtel <> Signed-off-by: David S. Miller <>
2016-03-24Merge branch 'next' of ↵Linus Torvalds-3/+126
git:// Pull thermal updates from Zhang Rui: - Fix a regression where bogus trip points on some Lenovo laptops start to screw up thermal control after commit 81ad4276b505 ("Thermal: initialize thermal zone device correctly"). On these Lenovo laptops, a bogus passive trip point is reported, which is 0 degree Celsius. Without commit 81ad4276b505, thermal zone fails to set cooling devices to proper cooling state, which is a bug. But with commit 81ad4276b505 applied, the processors are always throttled on these Lenovo laptops because the current temperature is always higher than the passive trip point. Fix things to ignore such bogus trip points. (Zhang Rui) - Introduce Mediatek thermal driver. (Sascha Hauer) - Introduce devm_ versions of OF thermal sensor register API. (Laxman Dewangan) - Changes in Kconfigs to allow compile test on UM arch. (Krzysztof Kozlowski) - Introduce Skylake support in intel_pch_thermal driver. (Srinivas Pandruvada) - Several small fixes on Rockchip, TI-SoC, Tegra, RCar, and Exynos thermal drivers. * 'next' of git:// (26 commits) Thermal: Ignore invalid trip points thermal: trace: migrating thermal traces to use TRACE_DEFINE_ENUM() macros thermal: intel_pch_thermal: Enable Skylake PCH thermal thermal: doc: Add details of devm_thermal_zone_of_sensor_{register,unregister} thermal: of-thermal: Add devm version of thermal_zone_of_sensor_register thermal: doc: Add details of thermal_zone_of_sensor_{register,unregister} thermal: exynos: Defer probe if vtmu is present but not registered thermal: exynos: Use devm_regulator_get_optional() for vtmu thermal: exynos: List vtmu-supply as optional property in DT binding thermal: exynos: Print a message about exceeded number of supported trip-points thermal: exynos: Document number of supported trip-points thermal: exynos: Document compatible for Exynos5433 TMU thermal: mtk: allow compile testing on UM thermal: tegra_soctherm: fix sign bit of temperature thermal: Fix build error of missing devm_ioremap_resource on UM thermal: ti-soc-thermal: clean up the error handling a bit thermal: rcar: Use ARCH_RENESAS thermal: rcar_thermal: don't open code of_device_get_match_data() thermal: db8500_cpufreq_cooling: Compile with COMPILE_TEST thermal: rockchip: fix the tsadc sequence output on rk3228/rk3399 ...
2016-03-24Merge branch 'irq-urgent-for-linus' of ↵Linus Torvalds-5/+17
git:// Pull irq fixes from Thomas Gleixner: "A small set of fixes for the usual ARM/SOC irqchip drivers - A set of fixes for mbigen to handle multiple devices in a hardware module proper - A cleanup for the mbigen config option which was pointlessly user configurable. - A cleanup for tegra replacing open coded functionality by the proper core function The config cleanup touches arch/arm64/Kconfig.platforms to select the irq chip for the related platform" * 'irq-urgent-for-linus' of git:// irqchip/mbigen: Make CONFIG_HISILICON_IRQ_MBIGEN a hidden option ARM64: Kconfig: Select mbigen interrupt controller on Hisilicon platform irqchip/mbigen: Handle multiple device nodes in a mbigen module irqchip/mbigen: Adjust DT bindings to handle multiple devices in a module irqchip/tegra: Switch to use irq_domain_free_irqs_common
2016-03-24Merge branch 'locking-urgent-for-linus' of ↵Linus Torvalds-25/+116
git:// Pull locking fixes from Ingo Molnar: "Documentation updates and a bitops ordering fix" * 'locking-urgent-for-linus' of git:// bitops: Do not default to __clear_bit() for __clear_bit_unlock() documentation: Clarify compiler store-fusion example documentation: Transitivity is not cumulativity documentation: Add alternative release-acquire outcome documentation: Distinguish between local and global transitivity documentation: Subsequent writes ordered by rcu_dereference() documentation: Remove obsolete reference to RCU-protected indexes documentation: Fix memory-barriers.txt section references documentation: Fix control dependency and identical stores
2016-03-23Merge git:// Torvalds-7/+12
Pull networking bugfixes from David Miller: "Several bug fixes rolling in, some for changes introduced in this merge window, and some for problems that have existed for some time: 1) Fix prepare_to_wait() handling in AF_VSOCK, from Claudio Imbrenda. 2) The new DST_CACHE should be a silent config option, from Dave Jones. 3) inet_current_timestamp() unintentionally truncates timestamps to 16-bit, from Deepa Dinamani. 4) Missing reference to netns in ppp, from Guillaume Nault. 5) Free memory reference in hv_netvsc driver, from Haiyang Zhang. 6) Missing kernel doc documentation for function arguments in various spots around the networking, from Luis de Bethencourt. 7) UDP stopped receiving broadcast packets properly, due to overzealous multicast checks, fix from Paolo Abeni" * git:// (59 commits) net: ping: make ping_v6_sendmsg static hv_netvsc: Fix the order of num_sc_offered decrement net: Fix typos and whitespace. hv_netvsc: Fix the array sizes to be max supported channels hv_netvsc: Fix accessing freed memory in netvsc_change_mtu() ppp: take reference on channels netns net: Reset encap_level to avoid resetting features on inner IP headers net: mediatek: fix checking for NULL instead of IS_ERR() in .probe net: phy: at803x: Request 'reset' GPIO only for AT8030 PHY at803x: fix reset handling AF_VSOCK: Shrink the area influenced by prepare_to_wait Revert "vsock: Fix blocking ops call in prepare_to_wait" macb: fix PHY reset ipv4: initialize flowi4_flags before calling fib_lookup() fsl/fman: Workaround for Errata A-007273 ipv4: fix broadcast packets reception net: hns: bug fix about the overflow of mss net: hns: adds limitation for debug port mtu net: hns: fix the bug about mtu setting net: hns: fixes a bug of RSS ...
2016-03-23Merge tag 'platform-drivers-x86-v4.6-1' of ↵Linus Torvalds-0/+16
git:// Pull x86 platform driver updates from Darren Hart: "Significant refactoring of Dell laptop drivers, modularizing the smbios code. Multiple new platforms added for ideapad, asus, dell, and alienware using existing quirks. A few fixes and cleanups. hp-wmi: - Remove GPS rfkill support via pre-2009 interface - fix unregister order in hp_wmi_rfkill_setup() once again ideapad-laptop: - Add ideapad Y700 (15) to the no_hw_rfkill DMI list fujitsu-laptop: - Support radio toggle button intel-hid: - allocate correct amount of memory for private struct platform/x86: - Make intel_scu_ipc explicitly non-modular intel_pmc_ipc: - Avoid pending IPC1 command during legacy suspend - Fix GCR register base address and length asus-nb-wmi: - add wapf=4 quirk for ASUS X75VD intel_telemetry_pltdrv: - Change verbosity control bits dell-rbtn: - Add a comment about the XPS 13 9350 dell-wmi, dell-laptop: - depends DMI dell-wmi: - support Dell Inspiron M5110 - properly process Dell Instant Launch hotkey - enable receiving WMI events on Dell Vostro V131 - Support new hotkeys on the XPS 13 9350 (Skylake) - Clean up hotkey table size check - Stop storing pointers to DMI tables dell-laptop: - move dell_smi_error() to dell-smbios - use dell_smbios_find_token() instead of find_token_location() - use dell_smbios_find_token() instead of find_token_id() - extract SMBIOS-related code to a separate module dell-smbios: - rename dell_smi_error() to dell_smbios_error() - make da_tokens static - remove find_token_{id,location}() - implement new function for finding DMI table 0xDA tokens - make the SMBIOS buffer static - return the SMBIOS buffer from dell_smbios_get_buffer() - don't return an SMBIOS buffer from dell_smbios_send_request() - don't pass an SMBIOS buffer to dell_smbios_send_request() - rename dell_send_request() to dell_smbios_send_request() - rename release_buffer() to dell_smbios_release_buffer() - rename clear_buffer() to dell_smbios_clear_buffer() - rename get_buffer() to dell_smbios_get_buffer() dell-led: - use dell_smbios_send_request() for performing SMBIOS calls - use dell_smbios_find_token() for finding mic DMI tokens toshiba_acpi: - Add a module parameter to disable hotkeys registration - Add sysfs entries for the Cooling Method feature - Add support for cooling method feature Documentation/ABI: - Update sysfs-driver-toshiba_acpi file thinkpad_acpi: - Remove ambiguous logging for "Unsupported brightness interface" alienware-wmi: - whitespace improvements - Add support for two new systems: ASM200 and ASM201. - Add support for deep sleep control. - Add initial support for alienware graphics amplifier. - Add support for new platform: X51-R3 - Clean up whitespace for ASM100 platform" * tag 'platform-drivers-x86-v4.6-1' of git:// (47 commits) hp-wmi: Remove GPS rfkill support via pre-2009 interface hp-wmi: fix unregister order in hp_wmi_rfkill_setup() once again dell-wmi: support Dell Inspiron M5110 dell-wmi: properly process Dell Instant Launch hotkey dell-wmi: enable receiving WMI events on Dell Vostro V131 dell-smbios: rename dell_smi_error() to dell_smbios_error() dell-laptop: move dell_smi_error() to dell-smbios ideapad-laptop: Add ideapad Y700 (15) to the no_hw_rfkill DMI list fujitsu-laptop: Support radio toggle button intel-hid: allocate correct amount of memory for private struct platform/x86: Make intel_scu_ipc explicitly non-modular intel_pmc_ipc: Avoid pending IPC1 command during legacy suspend intel_pmc_ipc: Fix GCR register base address and length asus-nb-wmi: add wapf=4 quirk for ASUS X75VD intel_telemetry_pltdrv: Change verbosity control bits dell-rbtn: Add a comment about the XPS 13 9350 dell-wmi: Support new hotkeys on the XPS 13 9350 (Skylake) dell-wmi: Clean up hotkey table size check dell-wmi, dell-laptop: depends DMI dell-wmi: Stop storing pointers to DMI tables ...
2016-03-24Merge tag 'topic/drm-misc-2016-03-22' of ↵Dave Airlie-5/+6
git:// into drm-next Bunch of small fixupes all over. Plus a dma-buf patch that Sumit asked me to cherry-pick since that's the only one he had in his tree. There's a sparse issue outstanding in the color mgr stuff, but Lionel is still working on something that actually appeases sparse. * tag 'topic/drm-misc-2016-03-22' of git:// dma-buf/fence: fix fence_is_later v2 dma-buf: Update docs for SYNC ioctl drm: remove excess description dma-buf, drm, ion: Propagate error code from dma_buf_start_cpu_access() drm/atmel-hlcdc: use helper to get crtc state drm/atomic: use helper to get crtc state
2016-03-23PM / AVS: rockchip-io: add io selectors and supplies for rk3399David Wu-0/+11
This adds the necessary data for handling io voltage domains on the rk3399. As interesting tidbit, the rk3399 contains two separate iodomain areas. One in the regular General Register Files (GRF) and one in PMUGRF in the pmu power domain. Signed-off-by: David Wu <> Reviewed-by: Heiko Stuebner <> Acked-by: Kevin Hilman <> Signed-off-by: Rafael J. Wysocki <>
2016-03-23Documentation/ABI: Update sysfs-driver-toshiba_acpi fileAzael Avalos-0/+16
This patch updates the documentation file adding the Cooling Method entry. Signed-off-by: Azael Avalos <> Signed-off-by: Darren Hart <>
2016-03-23Merge branch 'mailbox-for-next' of ↵Linus Torvalds-0/+50
git:// Pull more mailbox updates from Jassi Brar: "Device tree bindings and driver for TI's Message-Manager controller. Due to some last minute cosmetic changes, the driver was not included in the first pull request, otherwise the driver has been reviewed twice" * 'mailbox-for-next' of git:// mailbox: Introduce TI message manager driver Documentation: dt: mailbox: Add TI Message Manager
2016-03-23Merge tag 'clk-for-linus' of ↵Linus Torvalds-2/+109
git:// Pull clk updates from Stephen Boyd: "The clk changes for this release cycle are mostly dominated by new device support in terms of LoC, but there has been some cleanup in the core as well as the usual minor clk additions to various drivers. Core: - parent tracking has been simplified - CLK_IS_ROOT is now a no-op flag, cleaning up drivers has started - of_clk_init() doesn't consider disabled DT nodes anymore - clk_unregister() had an error path bug squashed - of_clk_get_parent_count() has been fixed to only return unsigned ints - HAVE_MACH_CLKDEV is removed now that the last arch user (ARM) is gone New Drivers: - NXP LPC18xx creg - QCOM IPQ4019 GCC - TI dm814x ADPLL - i.MX6QP Updates: - Cyngus audio clks found on Broadcom iProc devices - Non-critical fixes for BCM2385 PLLs - Samsung exynos5433 updates for clk id errors, HDMI support, suspend/resume simplifications - USB, CAN, LVDS, and FCP clks on shmobile devices - sunxi got support for more clks on new SoCs and went through a minor refactoring/rewrite to use a simpler factor clk construct - rockchip added some more clk ids and added suport for fraction dividers - QCOM GDSCs in msm8996 - A new devm helper to make adding custom actions simpler (acked by Greg)" * tag 'clk-for-linus' of git:// (197 commits) clk: bcm2835: fix check of error code returned by devm_ioremap_resource() clk: renesas: div6: use RENESAS for #define clk: renesas: Rename header file renesas.h clk: max77{686,802}: Remove CLK_IS_ROOT clk: versatile: Remove CLK_IS_ROOT clk: sunxi: Remove use of variable length array clk: fixed-rate: Remove CLK_IS_ROOT clk: qcom: Remove CLK_IS_ROOT doc: dt: add documentation for lpc1850-creg-clk driver clk: add lpc18xx creg clk driver clk: lpc32xx: fix compilation warning clk: xgene: Add missing parenthesis when clearing divider value clk: mb86s7x: Remove CLK_IS_ROOT clk: x86: Remove clkdev.h and clk.h includes clk: x86: Remove CLK_IS_ROOT clk: mvebu: Remove CLK_IS_ROOT clk: renesas: move drivers to renesas directory clk: si5{14,351,70}: Remove CLK_IS_ROOT clk: scpi: Remove CLK_IS_ROOT clk: s2mps11: Remove CLK_IS_ROOT ...
2016-03-22Merge branch 'akpm' (patches from Andrew)Linus Torvalds-3/+322
Merge third patch-bomb from Andrew Morton: - more ocfs2 changes - a few hotfixes - Andy's compat cleanups - misc fixes to fatfs, ptrace, coredump, cpumask, creds, eventfd, panic, ipmi, kgdb, profile, kfifo, ubsan, etc. - many rapidio updates: fixes, new drivers. - kcov: kernel code coverage feature. Like gcov, but not "prohibitively expensive". - extable code consolidation for various archs * emailed patches from Andrew Morton <>: (81 commits) ia64/extable: use generic search and sort routines x86/extable: use generic search and sort routines s390/extable: use generic search and sort routines alpha/extable: use generic search and sort routines kernel/...: convert pr_warning to pr_warn drivers: dma-coherent: use memset_io for DMA_MEMORY_IO mappings drivers: dma-coherent: use MEMREMAP_WC for DMA_MEMORY_MAP memremap: add MEMREMAP_WC flag memremap: don't modify flags kernel/signal.c: add compile-time check for __ARCH_SI_PREAMBLE_SIZE mm/mprotect.c: don't imply PROT_EXEC on non-exec fs ipc/sem: make semctl setting sempid consistent ubsan: fix tree-wide -Wmaybe-uninitialized false positives kfifo: fix sparse complaints scripts/gdb: account for changes in module data structure scripts/gdb: add cmdline reader command scripts/gdb: add version command kernel: add kcov code coverage profile: hide unused functions when !CONFIG_PROC_FS hpwdt: use nmi_panic() when kernel panics in NMI handler ...
2016-03-22Merge tag 'for-linus' of ↵Linus Torvalds-1/+2
git:// Pull more rdma updates from Doug Ledford: "Round two of 4.6 merge window patches. This is a monster pull request. I held off on the hfi1 driver updates (the hfi1 driver is intimately tied to the qib driver and the new rdmavt software library that was created to help both of them) in my first pull request. The hfi1/qib/rdmavt update is probably 90% of this pull request. The hfi1 driver is being left in staging so that it can be fixed up in regards to the API that Al and yourself didn't like. Intel has agreed to do the work, but in the meantime, this clears out 300+ patches in the backlog queue and brings my tree and their tree closer to sync. This also includes about 10 patches to the core and a few to mlx5 to create an infrastructure for configuring SRIOV ports on IB devices. That series includes one patch to the net core that we sent to netdev@ and Dave Miller with each of the three revisions to the series. We didn't get any response to the patch, so we took that as implicit approval. Finally, this series includes Intel's new iWARP driver for their x722 cards. It's not nearly the beast as the hfi1 driver. It also has a linux-next merge issue, but that has been resolved and it now passes just fine. Summary: - A few minor core fixups needed for the next patch series - The IB SRIOV series. This has bounced around for several versions. Of note is the fact that the first patch in this series effects the net core. It was directed to netdev and DaveM for each iteration of the series (three versions total). Dave did not object, but did not respond either. I've taken this as permission to move forward with the series. - The new Intel X722 iWARP driver - A huge set of updates to the Intel hfi1 driver. Of particular interest here is that we have left the driver in staging since it still has an API that people object to. Intel is working on a fix, but getting these patches in now helps keep me sane as the upstream and Intel's trees were over 300 patches apart" * tag 'for-linus' of git:// (362 commits) IB/ipoib: Allow mcast packets from other VFs IB/mlx5: Implement callbacks for manipulating VFs net/mlx5_core: Implement modify HCA vport command net/mlx5_core: Add VF param when querying vport counter IB/ipoib: Add ndo operations for configuring VFs IB/core: Add interfaces to control VF attributes IB/core: Support accessing SA in virtualized environment IB/core: Add subnet prefix to port info IB/mlx5: Fix decision on using MAD_IFC net/core: Add support for configuring VF GUIDs IB/{core, ulp} Support above 32 possible device capability flags IB/core: Replace setting the zero values in ib_uverbs_ex_query_device net/mlx5_core: Introduce offload arithmetic hardware capabilities net/mlx5_core: Refactor device capability function net/mlx5_core: Fix caching ATOMIC endian mode capability ib_srpt: fix a WARN_ON() message i40iw: Replace the obsolete crypto hash interface with shash IB/hfi1: Add SDMA cache eviction algorithm IB/hfi1: Switch to using the pin query function IB/hfi1: Specify mm when releasing pages ...
2016-03-22kernel: add kcov code coverageDmitry Vyukov-0/+111
kcov provides code coverage collection for coverage-guided fuzzing (randomized testing). Coverage-guided fuzzing is a testing technique that uses coverage feedback to determine new interesting inputs to a system. A notable user-space example is AFL ( However, this technique is not widely used for kernel testing due to missing compiler and kernel support. kcov does not aim to collect as much coverage as possible. It aims to collect more or less stable coverage that is function of syscall inputs. To achieve this goal it does not collect coverage in soft/hard interrupts and instrumentation of some inherently non-deterministic or non-interesting parts of kernel is disbled (e.g. scheduler, locking). Currently there is a single coverage collection mode (tracing), but the API anticipates additional collection modes. Initially I also implemented a second mode which exposes coverage in a fixed-size hash table of counters (what Quentin used in his original patch). I've dropped the second mode for simplicity. This patch adds the necessary support on kernel side. The complimentary compiler support was added in gcc revision 231296. We've used this support to build syzkaller system call fuzzer, which has found 90 kernel bugs in just 2 months: We've also found 30+ bugs in our internal systems with syzkaller. Another (yet unexplored) direction where kcov coverage would greatly help is more traditional "blob mutation". For example, mounting a random blob as a filesystem, or receiving a random blob over wire. Why not gcov. Typical fuzzing loop looks as follows: (1) reset coverage, (2) execute a bit of code, (3) collect coverage, repeat. A typical coverage can be just a dozen of basic blocks (e.g. an invalid input). In such context gcov becomes prohibitively expensive as reset/collect coverage steps depend on total number of basic blocks/edges in program (in case of kernel it is about 2M). Cost of kcov depends only on number of executed basic blocks/edges. On top of that, kernel requires per-thread coverage because there are always background threads and unrelated processes that also produce coverage. With inlined gcov instrumentation per-thread coverage is not possible. kcov exposes kernel PCs and control flow to user-space which is insecure. But debugfs should not be mapped as user accessible. Based on a patch by Quentin Casasnovas. [ make task_struct.kcov_mode have type `enum kcov_mode'] [ unbreak allmodconfig] [ follow x86 Makefile layout standards] Signed-off-by: Dmitry Vyukov <> Reviewed-by: Kees Cook <> Cc: syzkaller <> Cc: Vegard Nossum <> Cc: Catalin Marinas <> Cc: Tavis Ormandy <> Cc: Will Deacon <> Cc: Quentin Casasnovas <> Cc: Kostya Serebryany <> Cc: Eric Dumazet <> Cc: Alexander Potapenko <> Cc: Kees Cook <> Cc: Bjorn Helgaas <> Cc: Sasha Levin <> Cc: David Drysdale <> Cc: Ard Biesheuvel <> Cc: Andrey Ryabinin <> Cc: Kirill A. Shutemov <> Cc: Jiri Slaby <> Cc: Ingo Molnar <> Cc: Thomas Gleixner <> Cc: "H. Peter Anvin" <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
2016-03-22rapidio: add mport char device driverAlexandre Bounine-0/+104
Add mport character device driver to provide user space interface to basic RapidIO subsystem operations. See included Documentation/rapidio/mport_cdev.txt for more details. [ fix printk warning on i386] [ mport_cdev: fix some error codes] Signed-off-by: Alexandre Bounine <> Signed-off-by: Dan Carpenter <> Tested-by: Barry Wood <> Cc: Matt Porter <> Cc: Aurelien Jacquiot <> Cc: Andre van Herk <> Cc: Barry Wood <> Cc: Randy Dunlap <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
2016-03-22rapidio/tsi721: add filtered debug outputAlexandre Bounine-0/+9
Replace "all-or-nothing" debug output with controlled debug output using functional block masks. This allows run time control of debug messages through 'dbg_level' module parameter. Signed-off-by: Alexandre Bounine <> Cc: Matt Porter <> Cc: Aurelien Jacquiot <> Cc: Andre van Herk <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
2016-03-22fat: add config option to set UTF-8 mount option by defaultMaciej S. Szmigiero-3/+4
FAT has long supported its own default file name encoding config setting, separate from CONFIG_NLS_DEFAULT. However, if UTF-8 encoded file names are desired FAT character set should not be set to utf8 since this would make file names case sensitive even if case insensitive matching is requested. Instead, "utf8" mount options should be provided to enable UTF-8 file names in FAT file system. Unfortunately, there was no possibility to set the default value of this option so on UTF-8 system "utf8" mount option had to be added manually to most FAT mounts. This patch adds config option to set such default value. Signed-off-by: Maciej S. Szmigiero <> Acked-by: OGAWA Hirofumi <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
2016-03-22ocfs2: add feature document for online file checkGang He-0/+94
This document will describe OCFS2 online file check feature. OCFS2 is often used in high-availaibility systems. However, OCFS2 usually converts the filesystem to read-only when encounters an error. This may not be necessary, since turning the filesystem read-only would affect other running processes as well, decreasing availability. Then, a mount option (errors=continue) is introduced, which would return the -EIO errno to the calling process and terminate furhter processing so that the filesystem is not corrupted further. The filesystem is not converted to read-only, and the problematic file's inode number is reported in the kernel log. The user can try to check/fix this file via online filecheck feature. Signed-off-by: Gang He <> Cc: Mark Fasheh <> Cc: Joel Becker <> Cc: Junxiao Bi <> Cc: Joseph Qi <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
2016-03-22cpufreq: powernv: Add sysfs attributes to show throttle statsShilpasri G Bhat-0/+69
Create sysfs attributes to export throttle information in /sys/devices/system/cpu/cpuX/cpufreq/throttle_stats directory. The newly added sysfs files are as follows: 1)/sys/devices/system/cpu/cpuX/cpufreq/throttle_stats/turbo_stat 2)/sys/devices/system/cpu/cpuX/cpufreq/throttle_stats/sub-turbo_stat 3)/sys/devices/system/cpu/cpuX/cpufreq/throttle_stats/unthrottle 4)/sys/devices/system/cpu/cpuX/cpufreq/throttle_stats/powercap 5)/sys/devices/system/cpu/cpuX/cpufreq/throttle_stats/overtemp 6)/sys/devices/system/cpu/cpuX/cpufreq/throttle_stats/supply_fault 7)/sys/devices/system/cpu/cpuX/cpufreq/throttle_stats/overcurrent 8)/sys/devices/system/cpu/cpuX/cpufreq/throttle_stats/occ_reset Detailed explanation of each attribute is added to Documentation/ABI/testing/sysfs-devices-system-cpu Signed-off-by: Shilpasri G Bhat <> Acked-by: Viresh Kumar <> Signed-off-by: Rafael J. Wysocki <>
2016-03-22Merge branch 'i2c/for-next' of ↵Linus Torvalds-3/+164
git:// Pull i2c updates from Wolfram Sang: "Mostly usual driver updates and improvements. The changelog should give an idea. Standing out is the i2c-qup driver with lots of new capabilities and we also have now an i2c-demuxer. I'd especially like to welcome Peter Rosin as the i2c-mux maintainer. He has an interesting series for muxes in the queue and agreed to look after this part of the subsystem. Thank you, Peter, and welcome again! The octeon changes were applied pretty recently before the merge window. I am aware. They are the first (and relatively simple) patches of a larger overhaul to this driver. In case something goes wrong with them, they are easy to fix (or revert). The advantage I see is that they are out of the way, and I can concentrate on the next block of patches. I really would like to apply the overhaul in smaller batches to avoid regressions. And waiting a cycle for the introductory patches seemed too much of a delay for me" * 'i2c/for-next' of git:// (39 commits) i2c: octeon: Support I2C_M_RECV_LEN i2c: octeon: Cleanup resource allocation code i2c: octeon: Cleanup i2c-octeon driver MAINTAINERS: add Peter Rosin as i2c mux maintainer dt-bindings: i2c: Spelling s/propoerty/property/ i2c: immediately mark ourselves as registered i2c: i801: sort IDs alphabetically MAINTAINERS: Mika and me are designated reviewers for I2C DESIGNWARE i2c: octeon: Cleanup kerneldoc comments i2c: do not use internal data from driver core i2c: cadence: Fix the kernel-doc warnings i2c: imx: remove extra spaces. i2c: rcar: don't open code of_device_get_match_data() i2c: qup: Fix fifo handling after adding V2 support i2c: xiic: Implement power management i2c: piix4: Pre-shift the port number i2c: piix4: Always use the same type for port i2c: piix4: Support alternative port selection register i2c: tegra: don't open code of_device_get_match_data() i2c: riic, sh_mobile, rcar: Use ARCH_RENESAS ...
2016-03-22Merge branch 'for-next' of ↵Linus Torvalds-1/+10
git:// Pull SCSI target updates from Nicholas Bellinger: "The highlights this round include: - Add target_alloc_session() w/ callback helper for doing se_session allocation + tag + se_node_acl lookup. (HCH + nab) - Tree-wide fabric driver conversion to use target_alloc_session() - Convert sbp-target to use percpu_ida tag pre-allocation, and TARGET_SCF_ACK_KREF I/O krefs (Chris Boot + nab) - Convert usb-gadget to use percpu_ida tag pre-allocation, and TARGET_SCF_ACK_KREF I/O krefs (Andrzej Pietrasiewicz + nab) - Convert xen-scsiback to use percpu_ida tag pre-allocation, and TARGET_SCF_ACK_KREF I/O krefs (Juergen Gross + nab) - Convert tcm_fc to use TARGET_SCF_ACK_KREF I/O + TMR krefs - Convert ib_srpt to use percpu_ida tag pre-allocation - Add DebugFS node for qla2xxx target sess list (Quinn) - Rework iser-target connection termination (Jenny + Sagi) - Convert iser-target to new CQ API (HCH) - Add pass-through WRITE_SAME support for IBLOCK (Mike Christie) - Introduce data_bitmap for asynchronous access of data area (Sheng Yang + Andy) - Fix target_release_cmd_kref shutdown comp leak (Himanshu Madhani) Also, there is a separate PULL request coming for cxgb4 NIC driver prerequisites for supporting hw iscsi segmentation offload (ISO), that will be the base for a number of v4.7 developments involving iscsi-target hw offloads" * 'for-next' of git:// (36 commits) target: Fix target_release_cmd_kref shutdown comp leak target: Avoid DataIN transfers for non-GOOD SAM status target/user: Report capability of handling out-of-order completions to userspace target/user: Fix size_t format-spec build warning target/user: Don't free expired command when time out target/user: Introduce data_bitmap, replace data_length/data_head/data_tail target/user: Free data ring in unified function target/user: Use iovec[] to describe continuous area target: Remove enum transport_lunflags_table target/iblock: pass WRITE_SAME to device if possible iser-target: Kill the ->isert_cmd back pointer in struct iser_tx_desc iser-target: Kill struct isert_rdma_wr iser-target: Convert to new CQ API iser-target: Split and properly type the login buffer iser-target: Remove ISER_RECV_DATA_SEG_LEN iser-target: Remove impossible condition from isert_wait_conn iser-target: Remove redundant wait in release_conn iser-target: Rework connection termination iser-target: Separate flows for np listeners and connections cma events iser-target: Add new state ISER_CONN_BOUND to isert_conn ...
2016-03-22Merge tag 'iommu-updates-v4.6' of ↵Linus Torvalds-14/+140
git:// Pull IOMMU updates from Joerg Roedel: - updates for the Exynos IOMMU driver to make use of default domains and to add support for the SYSMMU v5 - new Mediatek IOMMU driver - support for the ARMv7 short descriptor format in the io-pgtable code - default domain support for the ARM SMMU - couple of other small fixes all over the place * tag 'iommu-updates-v4.6' of git:// (41 commits) iommu/ipmmu-vmsa: Add r8a7795 DT binding iommu/mediatek: Check for NULL instead of IS_ERR() iommu/io-pgtable-armv7s: Fix kmem_cache_alloc() flags iommu/mediatek: Fix handling of of_count_phandle_with_args result iommu/dma: Fix NEED_SG_DMA_LENGTH dependency iommu/mediatek: Mark PM functions as __maybe_unused iommu/mediatek: Select ARM_DMA_USE_IOMMU iommu/exynos: Use proper readl/writel register interface iommu/exynos: Pointers are nto physical addresses dts: mt8173: Add iommu/smi nodes for mt8173 iommu/mediatek: Add mt8173 IOMMU driver memory: mediatek: Add SMI driver dt-bindings: mediatek: Add smi dts binding dt-bindings: iommu: Add binding for mediatek IOMMU iommu/ipmmu-vmsa: Use ARCH_RENESAS iommu/exynos: Support multiple attach_device calls iommu/exynos: Add Maintainers entry for Exynos SYSMMU driver iommu/exynos: Add support for v5 SYSMMU iommu/exynos: Update device tree documentation iommu/exynos: Add support for SYSMMU controller with bogus version reg ...
2016-03-21igmp: Document sysctl_igmp_max_msfBenjamin Poirier-3/+8
Signed-off-by: Benjamin Poirier <> Signed-off-by: David S. Miller <>
2016-03-21net: Fix indentation of the conf/ documentation blockBenjamin Poirier-5/+5
Commit d67ef35fff67 ("clarify documentation for net.ipv4.igmp_max_memberships") mistakenly indented a block of documentation such that it now looks like it belongs to a specific sysctl. Restore that block's original position. Cc: Jeremy Eder <> Signed-off-by: Benjamin Poirier <> Signed-off-by: David S. Miller <>
2016-03-21Merge branch 'for-linus-4.6' of ↵Linus Torvalds-250/+11
git:// Pull btrfs updates from Chris Mason: "We have a good sized cleanup of our internal read ahead code, and the first series of commits from Chandan to enable PAGE_SIZE > sectorsize Otherwise, it's a normal series of cleanups and fixes, with many thanks to Dave Sterba for doing most of the patch wrangling this time" * 'for-linus-4.6' of git:// (82 commits) btrfs: make sure we stay inside the bvec during __btrfs_lookup_bio_sums btrfs: Fix misspellings in comments. btrfs: Print Warning only if ENOSPC_DEBUG is enabled btrfs: scrub: silence an uninitialized variable warning btrfs: move btrfs_compression_type to compression.h btrfs: rename btrfs_print_info to btrfs_print_mod_info Btrfs: Show a warning message if one of objectid reaches its highest value Documentation: btrfs: remove usage specific information btrfs: use kbasename in btrfsic_mount Btrfs: do not collect ordered extents when logging that inode exists Btrfs: fix race when checking if we can skip fsync'ing an inode Btrfs: fix listxattrs not listing all xattrs packed in the same item Btrfs: fix deadlock between direct IO reads and buffered writes Btrfs: fix extent_same allowing destination offset beyond i_size Btrfs: fix file loss on log replay after renaming a file and fsync Btrfs: fix unreplayable log after snapshot delete + parent dir fsync Btrfs: fix lockdep deadlock warning due to dev_replace btrfs: drop unused argument in btrfs_ioctl_get_supported_features btrfs: add GET_SUPPORTED_FEATURES to the control device ioctls btrfs: change max_inline default to 2048 ...
2016-03-21rtc: mcp795: add devicetree supportEmil Bartczak-0/+11
Add device tree support to the rtc-mcp795 driver. Signed-off-by: Emil Bartczak <> Acked-by: Rob Herring <> Signed-off-by: Alexandre Belloni <>