1. 04 Mar, 2014 22 commits
  2. 22 Feb, 2014 4 commits
  3. 19 Feb, 2014 4 commits
    • Chuansheng Liu's avatar
    • Thomas Gleixner's avatar
      Merge branch 'irq/for-arm' into irq/core · 1bc38a1d
      Thomas Gleixner authored
      Pull the functionality which is required to cleanup sdhci/sdio
      in. It's in a separate branch so it can be pulled from others
      Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      1bc38a1d
    • Thomas Gleixner's avatar
      genirq: Provide irq_wake_thread() · a92444c6
      Thomas Gleixner authored
      In course of the sdhci/sdio discussion with Russell about killing the
      sdio kthread hackery we discovered the need to be able to wake an
      interrupt thread from software.
      
      The rationale for this is, that sdio hardware can lack proper
      interrupt support for certain features. So the driver needs to poll
      the status registers, but at the same time it needs to be woken up by
      an hardware interrupt.
      
      To be able to get rid of the home brewn kthread construct of sdio we
      need a way to wake an irq thread independent of an actual hardware
      interrupt.
      
      Provide an irq_wake_thread() function which wakes up the thread which
      is associated to a given dev_id. This allows sdio to invoke the irq
      thread from the hardware irq handler via the IRQ_WAKE_THREAD return
      value and provides a possibility to wake it via a timer for the
      polling scenarios. That allows to simplify the sdio logic
      significantly.
      Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Chris Ball <chris@printf.net>
      Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
      Link: http://lkml.kernel.org/r/20140215003823.772565780@linutronix.de
      a92444c6
    • Thomas Gleixner's avatar
      genirq: Provide synchronize_hardirq() · 18258f72
      Thomas Gleixner authored
      synchronize_irq() waits for hard irq and threaded handlers to complete
      before returning. For some special cases we only need to make sure
      that the hard interrupt part of the irq line is not in progress when
      we disabled the - possibly shared - interrupt at the device level.
      
      A proper use case for this was provided by Russell. The sdhci driver
      requires some irq triggered functions to be run in thread context. The
      current implementation of the thread context is a sdio private kthread
      construct, which has quite some shortcomings. These can be avoided
      when the thread is directly associated to the device interrupt via the
      generic threaded irq infrastructure.
      
      Though there is a corner case related to run time power management
      where one side disables the device interrupts at the device level and
      needs to make sure, that an already running hard interrupt handler has
      completed before proceeding further. Though that hard interrupt
      handler might wake the associated thread, which in turn can request
      the runtime PM to reenable the device. Using synchronize_irq() leads
      to an immediate deadlock of the irq thread waiting for the PM lock and
      the synchronize_irq() waiting for the irq thread to complete.
      
      Due to the fact that it is sufficient for this case to ensure that no
      hard irq handler is executing a new function which avoids the check
      for the thread is required.
      
      Add a function, which just monitors the hard irq parts and ignores the
      threaded handlers.
      Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Tested-by: default avatarRussell King <linux@arm.linux.org.uk>
      Cc: Chris Ball <chris@printf.net>
      Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
      Link: http://lkml.kernel.org/r/20140215003823.653236081@linutronix.de
      18258f72
  4. 18 Feb, 2014 1 commit
  5. 16 Feb, 2014 8 commits
    • Linus Torvalds's avatar
      Linux 3.14-rc3 · 6d0abeca
      Linus Torvalds authored
      6d0abeca
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs · 3962dfbe
      Linus Torvalds authored
      Pull btrfs fixes from Chris Mason:
       "We have a small collection of fixes in my for-linus branch.
      
        The big thing that stands out is a revert of a new ioctl.  Users
        haven't shipped yet in btrfs-progs, and Dave Sterba found a better way
        to export the information"
      
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
        Btrfs: use right clone root offset for compressed extents
        btrfs: fix null pointer deference at btrfs_sysfs_add_one+0x105
        Btrfs: unset DCACHE_DISCONNECTED when mounting default subvol
        Btrfs: fix max_inline mount option
        Btrfs: fix a lockdep warning when cleaning up aborted transaction
        Revert "btrfs: add ioctl to export size of global metadata reservation"
      3962dfbe
    • Linus Torvalds's avatar
      Merge tag 'dt-fixes-for-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux · 4302a875
      Linus Torvalds authored
      Pull devicetree fixes from Rob Herring:
       "Fix booting on PPC boards.  Changes to of_match_node matching caused
        the serial port on some PPC boards to stop working.  Reverted the
        change and reimplement to split matching between new style compatible
        only matching and fallback to old matching algorithm"
      
      * tag 'dt-fixes-for-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
        of: search the best compatible match first in __of_match_node()
        Revert "OF: base: match each node compatible against all given matches first"
      4302a875
    • Kevin Hao's avatar
      of: search the best compatible match first in __of_match_node() · 06b29e76
      Kevin Hao authored
      Currently, of_match_node compares each given match against all node's
      compatible strings with of_device_is_compatible.
      
      To achieve multiple compatible strings per node with ordering from
      specific to generic, this requires given matches to be ordered from
      specific to generic. For most of the drivers this is not true and also
      an alphabetical ordering is more sane there.
      
      Therefore, this patch introduces a function to match each of the node's
      compatible strings against all given compatible matches without type and
      name first, before checking the next compatible string. This implies
      that node's compatibles are ordered from specific to generic while
      given matches can be in any order. If we fail to find such a match
      entry, then fall-back to the old method in order to keep compatibility.
      
      Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
      Signed-off-by: default avatarKevin Hao <haokexin@gmail.com>
      Tested-by: default avatarStephen Chivers <schivers@csc.com>
      Signed-off-by: default avatarRob Herring <robh@kernel.org>
      06b29e76
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending · 946dd683
      Linus Torvalds authored
      Pull SCSI target fixes from Nicholas Bellinger:
       "Mostly minor fixes this time to v3.14-rc1 related changes.  Also
        included is one fix for a free after use regression in persistent
        reservations UNREGISTER logic that is CC'ed to >= v3.11.y stable"
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
        Target/sbc: Fix protection copy routine
        IB/srpt: replace strict_strtoul() with kstrtoul()
        target: Simplify command completion by removing CMD_T_FAILED flag
        iser-target: Fix leak on failure in isert_conn_create_fastreg_pool
        iscsi-target: Fix SNACK Type 1 + BegRun=0 handling
        target: Fix missing length check in spc_emulate_evpd_83()
        qla2xxx: Remove last vestiges of qla_tgt_cmd.cmd_list
        target: Fix 32-bit + CONFIG_LBDAF=n link error w/ sector_div
        target: Fix free-after-use regression in PR unregister
      946dd683
    • Linus Torvalds's avatar
      Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux · 2d0ef4fb
      Linus Torvalds authored
      Pull i2c fixes from Wolfram Sang:
       "i2c has a bugfix and documentation improvements for you"
      
      * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
        Documentation: i2c: mention ACPI method for instantiating devices
        Documentation: i2c: describe devicetree method for instantiating devices
        i2c: mv64xxx: refactor message start to ensure proper initialization
      2d0ef4fb
    • Linus Torvalds's avatar
      Merge branches 'irq-urgent-for-linus' and 'irq-core-for-linus' of... · 5a667a0c
      Linus Torvalds authored
      Merge branches 'irq-urgent-for-linus' and 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
      
      Pull irq update from Thomas Gleixner:
       "Fix from the urgent branch: a trivial oneliner adding the missing
        Kconfig dependency curing build failures which have been discovered by
        several build robots.
      
        The update in the irq-core branch provides a new function in the
        irq/devres code, which is a prerequisite for driver developers to get
        rid of boilerplate code all over the place.
      
        Not a bugfix, but it has zero impact on the current kernel due to the
        lack of users.  It's simpler to provide the infrastructure to
        interested parties via your tree than fulfilling the wishlist of
        driver maintainers on which particular commit or tag this should be
        based on"
      
      * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        genirq: Add missing irq_to_desc export for CONFIG_SPARSE_IRQ=n
      
      * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        genirq: Add devm_request_any_context_irq()
      5a667a0c
    • Linus Torvalds's avatar
      Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 3a19c07c
      Linus Torvalds authored
      Pull timer fixes from Thomas Gleixner:
       "The following trilogy of patches brings you:
      
         - fix for a long standing math overflow issue with HZ < 60
      
         - an onliner fix for a corner case in the dreaded tick broadcast
           mechanism affecting a certain range of AMD machines which are
           infested with the infamous automagic C1E power control misfeature
      
         - a fix for one of the ARM platforms which allows the kernel to
           proceed and boot instead of stupidly panicing for no good reason.
           The patch is slightly larger than necessary, but it's less ugly
           than the alternative 5 liner"
      
      * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        tick: Clear broadcast pending bit when switching to oneshot
        clocksource: Kona: Print warning rather than panic
        time: Fix overflow when HZ is smaller than 60
      3a19c07c
  6. 15 Feb, 2014 1 commit
    • Linus Torvalds's avatar
      Merge tag 'trace-fixes-v3.14-rc2' of... · 9bd01b9b
      Linus Torvalds authored
      Merge tag 'trace-fixes-v3.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
      
      Pull twi tracing fixes from Steven Rostedt:
       "Two urgent fixes in the tracing utility.
      
        The first is a fix for the way the ring buffer stores timestamps.
        After a restructure of the code was done, the ring buffer timestamp
        logic missed the fact that the first event on a sub buffer is to have
        a zero delta, as the full timestamp is stored on the sub buffer
        itself.  But because the delta was not cleared to zero, the timestamp
        for that event will be calculated as the real timestamp + the delta
        from the last timestamp.  This can skew the timestamps of the events
        and have them say they happened when they didn't really happen.
        That's bad.
      
        The second fix is for modifying the function graph caller site.  When
        the stop machine was removed from updating the function tracing code,
        it missed updating the function graph call site location.  It is still
        modified as if it is being done via stop machine.  But it's not.  This
        can lead to a GPF and kernel crash if the function graph call site
        happens to lie between cache lines and one CPU is executing it while
        another CPU is doing the update.  It would be a very hard condition to
        hit, but the result is severe enough to have it fixed ASAP"
      
      * tag 'trace-fixes-v3.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
        ftrace/x86: Use breakpoints for converting function graph caller
        ring-buffer: Fix first commit on sub-buffer having non-zero delta
      9bd01b9b