1. 02 Oct, 2015 7 commits
    • Stephen Boyd's avatar
      gpio: msm: Remove unused driver · 9f353828
      Stephen Boyd authored
      Remove this driver now that Bjorn has introduced a pinctrl driver
      for msm8660 and the dts files have been updated with the pinctrl
      compatibles.
      
      Cc: Andy Gross <agross@codeaurora.org>
      Reviewed-by: default avatarBjorn Andersson <bjorn.andersson@sonymobile.com>
      Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      9f353828
    • Linus Walleij's avatar
      gpio: zynq: use container_of() to get state container · fa9795d1
      Linus Walleij authored
      The state container of the Zynq GPIO driver is sometimes
      extracted from the gpio_chip exploiting the fact that offsetof()
      the struct gpio_chip inside the struct zynq_gpio is 0, so
      the container_of() is in practice a noop. However if a member
      is added to struct zynq_gpio in front of struct gpio_chip,
      things will break. Using proper container_of() avoids this
      problem.
      
      Semantically this is a noop, the compiler will optimize it away,
      but syntactically it makes me happier.
      
      Also replace some explicit container_of() calls with the helper
      function.
      
      Cc: Lars-Peter Clausen <lars@metafoo.de>
      Cc: Ezra Savard <ezra.savard@xilinx.com>
      Cc: Michal Simek <michal.simek@xilinx.com>
      Acked-by: default avatarHarini Katakam <harinik@xilinx.com>
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      fa9795d1
    • Linus Walleij's avatar
      gpio: vf610: use container_of() to get state container · 2f930643
      Linus Walleij authored
      The state container of the vf610 GPIO driver is sometimes
      extracted from the gpio_chip exploiting the fact that offsetof()
      the struct gpio_chip inside the struct vf610_gpio_port is 0, so
      the container_of() is in practice a noop. However if a member
      is added to struct vf610_gpio_port in front of struct gpio_chip,
      things will break. Using proper container_of() avoids this
      problem.
      
      Semantically this is a noop, the compiler will optimize it away,
      but syntactically it makes me happier.
      
      Also replace some explicit container_of() calls with the helper
      function.
      Acked-by: default avatarStefan Agner <stefan@agner.ch>
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      2f930643
    • Linus Walleij's avatar
      gpio: sx150x: use container_of() to get state container · 218f1f8b
      Linus Walleij authored
      The state container of the sx150x GPIO driver is sometimes
      extracted from the gpio_chip exploiting the fact that offsetof()
      the struct gpio_chip inside the struct sx150x_chip is 0, so
      the container_of() is in practice a noop. However if a member
      is added to struct sx150_chip in front of struct gpio_chip, things
      will break. Using proper container_of() avoids this problem.
      
      Semantically this is a noop, the compiler will optimize it away,
      but syntactically it makes me happier.
      
      Cc: Wei Chen <Wei.Chen@csr.com>
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      218f1f8b
    • Linus Walleij's avatar
      gpio: altera: use container_of() to get state container · 231d51b8
      Linus Walleij authored
      The state container of the Altera GPIO driver is extracted from
      the gpio_chip exploiting the fact that offsetof() the
      struct gpio_chip inside the struct of_mm_gpio_chip are both 0, so
      the container_of() is in practice a noop. However if a member
      is added to struct altera_gpio_chip in front of
      struct of_mm_gpio_chip, things will break. Using proper
      container_of() avoids this problem.
      
      Semantically this is a noop, the compiler will optimize it away,
      but syntactically it makes me happier.
      
      Cc: Tien Hock Loh <thloh@altera.com>
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      231d51b8
    • Linus Walleij's avatar
      gpio: etraxfs: use container_of() to get state container · 4843289e
      Linus Walleij authored
      The state container of the etraxfs GPIO driver is extracted from
      the gpio_chip exploiting the fact that offsetof() the
      struct gpio_chip inside the struct bgpio_chip are both 0, so
      the container_of() is in practice a noop. However if a member
      is added to struct etraxfs_gpio_chip in front of
      struct bgpio_chip, things will break. Using proper container_of()
      avoids this problem.
      
      Semantically this is a noop, the compiler will optimize it away,
      but syntactically it makes me happier.
      Acked-by: default avatarRabin Vincent <rabin@rab.in>
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      4843289e
    • Linus Walleij's avatar
      gpio: pl061: detail IRQ trigger handling · 1dbf7f29
      Linus Walleij authored
      I couldn't follow this code flow. Make it dirt simple to figure
      out what is going on and get proper debug prints. Warn if we
      set up an IRQ without any trigger. Should make no semantic
      difference.
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      1dbf7f29
  2. 24 Sep, 2015 6 commits
    • Linus Walleij's avatar
      gpio: keep the GPIO line names internal · f881bab0
      Linus Walleij authored
      This refactors the changes to the GPIO line naming mechanism to
      not have so widespread effects, instead we conclude the patch series
      by having created a name attribute in the GPIO descriptor, that need
      not be globally unique, and it will be initialized from the old
      .names array in struct gpio_chip if it exists, then used in the legacy
      sysfs code like the array was used previously.
      
      The associated changes to name lines from the device tree are
      controversial and need to stand alone from this. Resulting changes:
      
      1. Remove the export and the header for the gpio_name_to_desc() as so
      far the only use is inside gpiolib.c. Staticize gpio_name_to_desc()
      and move it above the only function using it.
      
      2. Only print a warning if there are two GPIO lines with the same name.
      The reason is to preserve current behaviour: before the previous
      changes to the naming mechanism this would not reject probing the
      driver, instead the error would occur when trying to export the line
      in sysfs, so restore this behaviour, but print a friendly warning
      if names collide.
      
      Cc: Johan Hovold <johan@kernel.org>
      Cc: Markus Pargmann <mpa@pengutronix.de>
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      f881bab0
    • Markus Pargmann's avatar
      gpiolib: Add gpio name information to /sys/kernel/debug/gpio · ced433e2
      Markus Pargmann authored
      Add some information about gpio names to the debugfs gpio file. name and
      label of a GPIO are then displayed next to each other. This way it is
      easy to see what the real name of GPIO is and what the driver requested
      it for.
      Signed-off-by: default avatarMarkus Pargmann <mpa@pengutronix.de>
      [Dropped unsolicited sysfs ABI patch hunk]
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      ced433e2
    • Markus Pargmann's avatar
      gpio-sysfs: Use gpio descriptor name instead of gpiochip names array · ddd54040
      Markus Pargmann authored
      The name is now stored in the gpio descriptor as well, for example to
      allow to store names from DT. This patch changes the sysfs gpio files
      to use the gpio descriptor name.
      Signed-off-by: default avatarMarkus Pargmann <mpa@pengutronix.de>
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      ddd54040
    • Markus Pargmann's avatar
      gpiolib: Use GPIO name from names array for gpio descriptor · 5f3ca732
      Markus Pargmann authored
      This patch adds GPIO names to the GPIO descriptors when initializing the
      gpiochip. It also introduces a check whether any of the new names will
      conflict with an existing GPIO name.
      Signed-off-by: default avatarMarkus Pargmann <mpa@pengutronix.de>
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      5f3ca732
    • Markus Pargmann's avatar
      gpio: Introduce gpio descriptor 'name' · c0017ed7
      Markus Pargmann authored
      The latest gpio hogging mechanism assigns each gpio a 'line-name' in the
      devicetree. The 'name' field is different from the 'label' field.
      'label' is only used for requested GPIOs to describe its current use by
      driver or userspace.
      
      The 'name' field describes the GPIO itself, not the use. This is most
      likely identical to the label in the schematic on the GPIO line and
      should help to find this particular GPIO.
      
      This is equivalent to the gpiochip->names array. However names should be
      stored in the GPIO descriptor. We will use gpiochip->names in the future
      only as initializer for the GPIO descriptors for drivers that assign
      GPIO names hardcoded. All other GPIO names will be parsed from DT and
      directly assigned to the GPIO descriptor.
      
      This patch adds a helper function to find gpio descriptors by name
      instead of gpio number.
      Signed-off-by: default avatarMarkus Pargmann <mpa@pengutronix.de>
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      c0017ed7
    • Markus Pargmann's avatar
      gpiolib-of: Rename gpio_hog functions to be generic · fd7337fd
      Markus Pargmann authored
      The gpio hogging functions are currently only used for gpio-hogging. But
      these functions are widely generic ones which parse gpio device nodes in
      the DT.
      Signed-off-by: default avatarMarkus Pargmann <mpa@pengutronix.de>
      Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      fd7337fd
  3. 20 Sep, 2015 10 commits
    • Linus Torvalds's avatar
      Linux 4.3-rc2 · 1f93e4a9
      Linus Torvalds authored
      1f93e4a9
    • Linus Torvalds's avatar
      Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm · 99bc7215
      Linus Torvalds authored
      Pull ARM fixes from Russell King:
       "Three fixes and a resulting cleanup for -rc2:
      
         - Andre Przywara reported that he was seeing a warning with the new
           cast inside DMA_ERROR_CODE's definition, and fixed the incorrect
           use.
      
         - Doug Anderson noticed that kgdb causes a "scheduling while atomic"
           bug.
      
         - OMAP5 folk noticed that their Thumb-2 compiled X servers crashed
           when enabling support to cover ARMv6 CPUs due to a kernel bug
           leaking some conditional context into the signal handler"
      
      * 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
        ARM: 8425/1: kgdb: Don't try to stop the machine when setting breakpoints
        ARM: 8437/1: dma-mapping: fix build warning with new DMA_ERROR_CODE definition
        ARM: get rid of needless #if in signal handling code
        ARM: fix Thumb2 signal handling when ARMv6 is enabled
      99bc7215
    • Linus Torvalds's avatar
      Merge tag 'linux-kselftest-4.3-rc2' of... · 30ec5682
      Linus Torvalds authored
      Merge tag 'linux-kselftest-4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
      
      Pull kselftest fixes from Shuah Khan:
       "This update contains 7 fixes for problems ranging from build failurs
        to incorrect error reporting"
      
      * tag 'linux-kselftest-4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
        selftests: exec: revert to default emit rule
        selftests: change install command to rsync
        selftests: mqueue: simplify the Makefile
        selftests: mqueue: allow extra cflags
        selftests: rename jump label to static_keys
        selftests/seccomp: add support for s390
        seltests/zram: fix syntax error
      30ec5682
    • Linus Torvalds's avatar
      Merge tag 'pm+acpi-4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 009884f3
      Linus Torvalds authored
      Pull power management and ACPI updates from Rafael Wysocki:
       "Included are: a somewhat late devfreq update which however is mostly
        fixes and cleanups with one new thing only (the PPMUv2 support on
        Exynos5433), an ACPI cpufreq driver fixup and two ACPI core cleanups
        related to preprocessor directives.
      
        Specifics:
      
         - Fix a memory allocation size in the devfreq core (Xiaolong Ye).
      
         - Fix a mistake in the exynos-ppmu DT binding (Javier Martinez
           Canillas).
      
         - Add support for PPMUv2 ((Platform Performance Monitoring Unit
           version 2.0) on the Exynos5433 SoCs (Chanwoo Choi).
      
         - Fix a type casting bug in the Exynos PPMU code (MyungJoo Ham).
      
         - Assorted devfreq code cleanups and optimizations (Javi Merino,
           MyungJoo Ham, Viresh Kumar).
      
         - Fix up the ACPI cpufreq driver to use a more lightweight way to get
           to its private data in the ->get() callback (Rafael J Wysocki).
      
         - Fix a CONFIG_ prefix bug in one of the ACPI drivers and make the
           ACPI subsystem use IS_ENABLED() instead of #ifdefs in function
           bodies (Sudeep Holla)"
      
      * tag 'pm+acpi-4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        cpufreq: acpi-cpufreq: Use cpufreq_cpu_get_raw() in ->get()
        ACPI: Eliminate CONFIG_.*{, _MODULE} #ifdef in favor of IS_ENABLED()
        ACPI: int340x_thermal: add missing CONFIG_ prefix
        PM / devfreq: Fix incorrect type issue.
        PM / devfreq: tegra: Update governor to use devfreq_update_stats()
        PM / devfreq: comments for get_dev_status usage updated
        PM / devfreq: drop comment about thermal setting max_freq
        PM / devfreq: cache the last call to get_dev_status()
        PM / devfreq: Drop unlikely before IS_ERR(_OR_NULL)
        PM / devfreq: exynos-ppmu: bit-wise operation bugfix.
        PM / devfreq: exynos-ppmu: Update documentation to support PPMUv2
        PM / devfreq: exynos-ppmu: Add the support of PPMUv2 for Exynos5433
        PM / devfreq: event: Remove incorrect property in exynos-ppmu DT binding
      009884f3
    • Linus Torvalds's avatar
      Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux · d590b2d4
      Linus Torvalds authored
      Pull clk fixes from Stephen Boyd:
       "A few driver fixes for tegra, rockchip, and st SoCs and a two-liner in
        the framework to avoid oops when get_parent ops return out of range
        values on tegra platforms"
      
      * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
        drivers: clk: st: Rename st_pll3200c32_407_c0_x into st_pll3200c32_cx_x
        clk: check for invalid parent index of orphans in __clk_init()
        clk: tegra: dfll: Properly protect OPP list
        clk: rockchip: add critical clock for rk3368
      d590b2d4
    • Linus Torvalds's avatar
      Merge tag 'led-fixes-for-v4.3-rc2' of... · e6827baf
      Linus Torvalds authored
      Merge tag 'led-fixes-for-v4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
      
      Pull LED fixes from Jacek Anaszewski:
       - fix module autoload for six OF platform drivers (aat1290, bcm6328,
         bcm6358, ktd2692, max77693, ns2)
       - aat1290: add missing static modifier
       - ipaq-micro: add missing LEDS_CLASS dependency
       - lp55xx: correct Kconfig dependecy for f/w user helper
      
      * tag 'led-fixes-for-v4.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
        leds:lp55xx: Correct Kconfig dependency for f/w user helper
        leds: leds-ipaq-micro: Add LEDS_CLASS dependency
        leds: aat1290: add 'static' modifier to init_mm_current_scale
        leds: leds-ns2: Fix module autoload for OF platform driver
        leds: max77693: Fix module autoload for OF platform driver
        leds: ktd2692: Fix module autoload for OF platform driver
        leds: bcm6358: Fix module autoload for OF platform driver
        leds: bcm6328: Fix module autoload for OF platform driver
        leds: aat1290: Fix module autoload for OF platform driver
      e6827baf
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma · dc847d5b
      Linus Torvalds authored
      Pull rdma fixes from Doug Ledford:
       "The new hfi1 driver in staging/rdma has had a number of fixup patches
        since being added to the tree.  This is the first batch of those fixes"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
        IB/hfi: Properly set permissions for user device files
        IB/hfi1: mask vs shift confusion
        IB/hfi1: clean up some defines
        IB/hfi1: info leak in get_ctxt_info()
        IB/hfi1: fix a locking bug
        IB/hfi1: checking for NULL instead of IS_ERR
        IB/hfi1: fix sdma_descq_cnt parameter parsing
        IB/hfi1: fix copy_to/from_user() error handling
        IB/hfi1: fix pstateinfo from returning improperly byteswapped value
      dc847d5b
    • Linus Torvalds's avatar
      Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm · 2673ee56
      Linus Torvalds authored
      Pull libnvdimm fixes from Dan Williams:
      
       - a boot regression (since v4.2) fix for some ARM configurations from
         Tyler
      
       - regression (since v4.1) fixes for mkfs.xfs on a DAX enabled device
         from Jeff.  These are tagged for -stable.
      
       - a pair of locking fixes from Axel that are hidden from lockdep since
         they involve device_lock().  The "btt" one is tagged for -stable, the
         other only applies to the new "pfn" mechanism in v4.3.
      
       - a fix for the pmem ->rw_page() path to use wmb_pmem() from Ross.
      
      * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
        mm: fix type cast in __pfn_to_phys()
        pmem: add proper fencing to pmem_rw_page()
        libnvdimm: pfn_devs: Fix locking in namespace_store
        libnvdimm: btt_devs: Fix locking in namespace_store
        blockdev: don't set S_DAX for misaligned partitions
        dax: fix O_DIRECT I/O to the last block of a blockdev
      2673ee56
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.dk/linux-block · 133bb595
      Linus Torvalds authored
      Pull block updates from Jens Axboe:
       "This is a bit bigger than it should be, but I could (did) not want to
        send it off last week due to both wanting extra testing, and expecting
        a fix for the bounce regression as well.  In any case, this contains:
      
         - Fix for the blk-merge.c compilation warning on gcc 5.x from me.
      
         - A set of back/front SG gap merge fixes, from me and from Sagi.
           This ensures that we honor SG gapping for integrity payloads as
           well.
      
         - Two small fixes for null_blk from Matias, fixing a leak and a
           capacity propagation issue.
      
         - A blkcg fix from Tejun, fixing a NULL dereference.
      
         - A fast clone optimization from Ming, fixing a performance
           regression since the arbitrarily sized bio's were introduced.
      
         - Also from Ming, a regression fix for bouncing IOs"
      
      * 'for-linus' of git://git.kernel.dk/linux-block:
        block: fix bounce_end_io
        block: blk-merge: fast-clone bio when splitting rw bios
        block: blkg_destroy_all() should clear q->root_blkg and ->root_rl.blkg
        block: Copy a user iovec if it includes gaps
        block: Refuse adding appending a gapped integrity page to a bio
        block: Refuse request/bio merges with gaps in the integrity payload
        block: Check for gaps on front and back merges
        null_blk: fix wrong capacity when bs is not 512 bytes
        null_blk: fix memory leak on cleanup
        block: fix bogus compiler warnings in blk-merge.c
      133bb595
    • Chris Mason's avatar
      fs-writeback: unplug before cond_resched in writeback_sb_inodes · 590dca3a
      Chris Mason authored
      Commit 505a666e ("writeback: plug writeback in wb_writeback() and
      writeback_inodes_wb()") has us holding a plug during writeback_sb_inodes,
      which increases the merge rate when relatively contiguous small files
      are written by the filesystem.  It helps both on flash and spindles.
      
      For an fs_mark workload creating 4K files in parallel across 8 drives,
      this commit improves performance ~9% more by unplugging before calling
      cond_resched().  cond_resched() doesn't trigger an implicit unplug, so
      explicitly getting the IO down to the device before scheduling reduces
      latencies for anyone waiting on clean pages.
      
      It also cuts down on how often we use kblockd to unplug, which means
      less work bouncing from one workqueue to another.
      
      Many more details about how we got here:
      
        https://lkml.org/lkml/2015/9/11/570Signed-off-by: default avatarChris Mason <clm@fb.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      590dca3a
  4. 19 Sep, 2015 1 commit
  5. 18 Sep, 2015 16 commits