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branch: hot_tracking

Nov 06, 2013

  1. MAINTAINERS: Add the maintainers for VFS hot tracking

    This patch adds maintainer information for VFS hot tracking
    into the MAINTAINERS file.
    
    Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
    Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
    Zhi Yong Wu authored

Nov 04, 2013

  1. VFS hot tracking, xfs: Add hot tracking support

    Connect up the VFS hot tracking support so XFS filesystem
    can make use of it.
    
    Signed-off-by: Dave Chinner <dchinner@redhat.com>
    Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
    Dave Chinner authored Zhi Yong Wu committed
  2. VFS hot tracking, btrfs: Add hot tracking support

    Introduce one new mount option '-o hot_track',
    and add its parsing support.
    
    Its usage looks like:
       mount -o hot_track
       mount -o nouser,hot_track
       mount -o nouser,hot_track,loop
       mount -o hot_track,nouser
    
    Reviewed-by: David Sterba <dsterba@suse.cz>
    Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
    Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
    Zhi Yong Wu authored
  3. VFS hot tracking: Add documentation

    Add Documentation for VFS hot tracking feature
    
    Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
    Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
    Zhi Yong Wu authored
  4. VFS hot tracking: Add a /proc interface to control memory usage

    Introduce a /proc interface hot-mem-high-thresh and
    to cap the memory which is consumed by hot_inode_item
    and hot_range_item, and they will be in the unit of
    1M bytes.
    
    Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
    Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
    Zhi Yong Wu authored
  5. VFS hot tracking: Add a /proc interface to make the interval tunable

    Add a /proc interface hot-update-interval under the dir
    /proc/sys/fs/ in order to turn HOT_UPDATE_INTERVAL into
    a tunable parameter.
    
    Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
    Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
    Zhi Yong Wu authored
  6. VFS hot tracking: Add an ioctl to get hot tracking information

    FS_IOC_GET_HEAT_INFO: return a struct containing the various
    metrics collected in hot_freq_data structs, and also return a
    calculated data temperature based on those metrics.
    
    Optionally, retrieve the temperature from the hot data hash list
    instead of recalculating it.
    
    Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
    Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
    Zhi Yong Wu authored
  7. VFS hot tracking: Add shrinker functionality to curtail memory usage

    Register a shrinker to control the amount of memory that
    is used in tracking hot regions. If we are throwing inodes
    out of memory due to memory pressure, we most definitely are
    going to need to reduce the amount of memory the tracking
    code is using, even if it means losing useful information.
    
    Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
    Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
    Zhi Yong Wu authored
  8. VFS hot tracking: Add a workqueue to move items between hot maps

    Add a workqueue per superblock and a delayed_work
    to run periodic work to update map info on each superblock.
    
    Two arrays of map list are defined, one is for hot inode
    items, and the other is for hot extent items.
    
    The hot items in the RB-tree will be at first distilled
    into one temperature in the range [0, 255]. It will be
    be linked to its corresponding array of map list which use
    the temperature as its index.
    
    Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
    Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
    Zhi Yong Wu authored
  9. VFS hot tracking: Track IO and record heat information

    This patch adds read/write code paths: include read_pages(),
    do_writepages(), do_generic_file_read() and __blockdev_direct_IO()
    to record heat information.
    
    When real disk i/o for an inode is done, its own hot_inode_item will
    be created or updated in the RB tree for the filesystem, and the i/o freq for
    all of its extents will also be created/updated in the RB-tree per inode.
    
    Each of the two structures hot_inode_item and hot_range_item
    contains a hot_freq_data struct with its frequency of access metrics
    (number of {reads, writes}, last {read,write} time, frequency of
    {reads,writes}).
    
    Each hot_inode_item contains one hot_range_tree struct which is keyed by
    {inode, offset, length} and used to keep track of all the ranges in this file.
    
    Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
    Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
    Zhi Yong Wu authored
  10. VFS hot tracking: Define basic data structures and functions

    This patch includes the basic data structure and functions needed for
    VFS hot tracking.
    
    It adds hot_inode_tree struct to keep track of frequently accessed
    files, and is keyed by {inode, offset}. Trees contain hot_inode_items
    representing those files and hot_range_items representing ranges in that
    file.
    
    It defines a data structure hot_info, which is associated with a mounted
    filesystem, and will be used to store the inode tree and range tree for
    hot items pertaining to that filesystem.
    
    Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
    Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
    Zhi Yong Wu authored

Nov 03, 2013

  1. Linus Torvalds

    Linux 3.12

    torvalds authored
  2. Linus Torvalds

    Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upst…

    …ream-linus
    
    Pull MIPS fixes from Ralf Baechle:
     "Three fixes across arch/mips with the most complex one being the GIC
      interrupt fix - at nine lines still not monster.  I'm confident this
      are the final MIPS patches even if there should go for an rc8"
    
    * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
      MIPS: ralink: fix return value check in rt_timer_probe()
      MIPS: malta: Fix GIC interrupt offsets
      MIPS: Perf: Fix 74K cache map
    torvalds authored
  3. minipli

    ipc, msg: forbid negative values for "msg{max,mnb,mni}"

    Negative message lengths make no sense -- so don't do negative queue
    lenghts or identifier counts. Prevent them from getting negative.
    
    Also change the underlying data types to be unsigned to avoid hairy
    surprises with sign extensions in cases where those variables get
    evaluated in unsigned expressions with bigger data types, e.g size_t.
    
    In case a user still wants to have "unlimited" sizes she could just use
    INT_MAX instead.
    
    Signed-off-by: Mathias Krause <minipli@googlemail.com>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
    minipli authored torvalds committed

Nov 02, 2013

  1. Linus Torvalds

    Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/ker…

    …nel/git/rusty/linux
    
    Pull ARM kallsyms fix from Rusty Russell:
     "Last minute perf unbreakage for ARM modules; spent a day in
      linux-next"
    
    * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
      scripts/kallsyms: filter symbols not in kernel address space
    torvalds authored
  2. ARC: Incorrect mm reference used in vmalloc fault handler

    A vmalloc fault needs to sync up PGD/PTE entry from init_mm to current
    task's "active_mm".  ARC vmalloc fault handler however was using mm.
    
    A vmalloc fault for non user task context (actually pre-userland, from
    init thread's open for /dev/console) caused the handler to deref NULL mm
    (for mm->pgd)
    
    The reasons it worked so far is amazing:
    
    1. By default (!SMP), vmalloc fault handler uses a cached value of PGD.
       In SMP that MMU register is repurposed hence need for mm pointer deref.
    
    2. In pre-3.12 SMP kernel, the problem triggering vmalloc didn't exist in
       pre-userland code path - it was introduced with commit 20bafb3
       "n_tty: Move buffers into n_tty_data"
    
    Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
    Cc: Gilad Ben-Yossef <gilad@benyossef.com>
    Cc: Noam Camus <noamc@ezchip.com>
    Cc: stable@vger.kernel.org    #3.10 and 3.11
    Cc: Peter Hurley <peter@hurleysoftware.com>
    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
    Vineet Gupta authored torvalds committed

Nov 01, 2013

  1. ming1

    scripts/kallsyms: filter symbols not in kernel address space

    This patch uses CONFIG_PAGE_OFFSET to filter symbols which
    are not in kernel address space because these symbols are
    generally for generating code purpose and can't be run at
    kernel mode, so we needn't keep them in /proc/kallsyms.
    
    For example, on ARM there are some symbols which may be
    linked in relocatable code section, then perf can't parse
    symbols any more from /proc/kallsyms, this patch fixes the
    problem (introduced b9b32bf)
    
    Cc: Russell King <linux@arm.linux.org.uk>
    Cc: linux-arm-kernel@lists.infradead.org
    Cc: Michal Marek <mmarek@suse.cz>
    Signed-off-by: Ming Lei <tom.leiming@gmail.com>
    Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
    Cc: stable@vger.kernel.org
    ming1 authored rustyrussell committed
  2. Linus Torvalds

    Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/…

    …linux/kernel/git/tip/tip
    
    Pull perf fixes from Ingo Molnar:
     "Two fixes:
    
       - Fix 'NMI handler took too long to run' false positives
    
         [ Genuine NMI overhead speedups will come for v3.13, this commit
           only fixes a measurement bug ]
    
       - Fix perf ring-buffer missed barrier causing (rare) ring-buffer data
         corruption on ppc64"
    
    * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
      perf/x86: Fix NMI measurements
      perf: Fix perf ring buffer memory ordering
    torvalds authored
  3. Linus Torvalds

    Merge tag 'usb-3.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel…

    …/git/gregkh/usb
    
    Pull USB fixes from Greg KH:
     "Here is a set of patches that revert all of the changes done to the
      pl2303 USB serial driver in the 3.12-rc timeframe, as it turns out
      they break some devices that work just fine on 3.11.  As it's not a
      good idea to break working systems, drop them all and they will be
      reworked for future kernel versions such that there is no breakage.
    
      I've also included a MAINTAINERS update for the USB serial subsystem
      and a new device id for the ftdi_sio driver as well"
    
    * tag 'usb-3.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
      USB: serial: ftdi_sio: add id for Z3X Box device
      USB: Maintainers change for usb serial drivers
      Revert "USB: pl2303: restrict the divisor based baud rate encoding method to the "HX" chip type"
      Revert "usb: pl2303: fix+improve the divsor based baud rate encoding method"
      Revert "usb: pl2303: do not round to the next nearest standard baud rate for the divisor based baud rate encoding method"
      Revert "usb: pl2303: remove 500000 baud from the list of standard baud rates"
      Revert "usb: pl2303: move the two baud rate encoding methods to separate functions"
      Revert "usb: pl2303: increase the allowed baud rate range for the divisor based encoding method"
      Revert "usb: pl2303: also use the divisor based baud rate encoding method for baud rates < 115200 with HX chips"
      Revert "usb: pl2303: add two comments concerning the supported baud rates with HX chips"
      Revert "pl2303: simplify the else-if contruct for type_1 chips in pl2303_startup()"
      Revert "pl2303: improve the chip type information output on startup"
      Revert "pl2303: improve the chip type detection/distinction"
      Revert "USB: pl2303: distinguish between original and cloned HX chips"
    torvalds authored
  4. Linus Torvalds

    Merge tag 'sound-3.12' of git://git.kernel.org/pub/scm/linux/kernel/g…

    …it/tiwai/sound
    
    Pull more sound fixes from Takashi Iwai:
     "The fixes for random bugs that have been reported lately in the game:
      a few fixes in ASoC dpam and wm_hubs bugs spotted by Coverity, a
      one-liner HD-audio fixup, and a fix for Oops with DPCM.
    
      They are not so critically urgent bugs, but all small and safe"
    
    * tag 'sound-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
      ALSA: fix oops in snd_pcm_info() caused by ASoC DPCM
      ASoC: wm_hubs: Add missing break in hp_supply_event()
      ALSA: hda - Add a fixup for ASUS N76VZ
      ASoC: dapm: Return -ENOMEM in snd_soc_dapm_new_dai_widgets()
      ASoC: dapm: Fix source list debugfs outputs
    torvalds authored
  5. Linus Torvalds

    Merge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mturqu…

    …ette/linux
    
    Pull clock subsystem fixes from Mike Turquette.
    
    * tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mturquette/linux:
      clk: fixup argument order when setting VCO parameters
      clk: socfpga: Fix incorrect sdmmc clock name
      clk: armada-370: fix tclk frequencies
      clk: nomadik: set all timers to use 2.4 MHz TIMCLK
    torvalds authored
  6. memcg: remove incorrect underflow check

    When a memcg is deleted mem_cgroup_reparent_charges() moves charged
    memory to the parent memcg.  As of v3.11-9444-g3ea67d0 "memcg: add per
    cgroup writeback pages accounting" there's bad pointer read.  The goal
    was to check for counter underflow.  The counter is a per cpu counter
    and there are two problems with the code:
    
     (1) per cpu access function isn't used, instead a naked pointer is used
         which easily causes oops.
     (2) the check doesn't sum all cpus
    
    Test:
      $ cd /sys/fs/cgroup/memory
      $ mkdir x
      $ echo 3 > /proc/sys/vm/drop_caches
      $ (echo $BASHPID >> x/tasks && exec cat) &
      [1] 7154
      $ grep ^mapped x/memory.stat
      mapped_file 53248
      $ echo 7154 > tasks
      $ rmdir x
      <OOPS>
    
    The fix is to remove the check.  It's currently dangerous and isn't
    worth fixing it to use something expensive, such as
    percpu_counter_sum(), for each reparented page.  __this_cpu_read() isn't
    enough to fix this because there's no guarantees of the current cpus
    count.  The only guarantees is that the sum of all per-cpu counter is >=
    nr_pages.
    
    Fixes: 3ea67d0 ("memcg: add per cgroup writeback pages accounting")
    Reported-and-tested-by: Flavio Leitner <fbl@redhat.com>
    Signed-off-by: Greg Thelen <gthelen@google.com>
    Reviewed-by: Sha Zhengju <handai.szj@taobao.com>
    Acked-by: Johannes Weiner <hannes@cmpxchg.org>
    Signed-off-by: Hugh Dickins <hughd@google.com>
    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
    Greg Thelen authored torvalds committed
  7. Alexey Kramarenko

    USB: serial: ftdi_sio: add id for Z3X Box device

    Custom VID/PID for Z3X Box device, popular tool for cellphone flashing.
    
    Signed-off-by: Alexey E. Kramarenko <alexeyk13@yandex.ru>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    alexeyk13 authored gregkh committed
  8. Greg Kroah-Hartman

    USB: Maintainers change for usb serial drivers

    Johan has been conned^Wgracious in accepting the maintainership of the
    USB serial drivers, especially as he's been doing all of the real work
    for the past few years.
    
    At the same time, remove a bunch of old entries for USB serial drivers
    that don't make sense anymore, given that the developers are no longer
    around, and individual driver maintainerships for tiny things like this
    is pretty pointless.
    
    Acked-by: Johan Hovold <jhovold@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    gregkh authored
  9. Greg Kroah-Hartman

    Revert "USB: pl2303: restrict the divisor based baud rate encoding me…

    …thod to the "HX" chip type"
    
    This reverts commit b8bdad6.
    
    Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
    they cause regressions on some versions of the chip.  This will all be
    revisited for later kernel versions when we can figure out how to handle
    this in a way that does not break working devices.
    
    Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
    Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
    Acked-by: Johan Hovold <jhovold@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    gregkh authored
  10. Greg Kroah-Hartman

    Revert "usb: pl2303: fix+improve the divsor based baud rate encoding …

    …method"
    
    This reverts commit 57ce61a.
    
    Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
    they cause regressions on some versions of the chip.  This will all be
    revisited for later kernel versions when we can figure out how to handle
    this in a way that does not break working devices.
    
    Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
    Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
    Acked-by: Johan Hovold <jhovold@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    gregkh authored
  11. Greg Kroah-Hartman

    Revert "usb: pl2303: do not round to the next nearest standard baud r…

    …ate for the divisor based baud rate encoding method"
    
    This reverts commit 75417d9.
    
    Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
    they cause regressions on some versions of the chip.  This will all be
    revisited for later kernel versions when we can figure out how to handle
    this in a way that does not break working devices.
    
    Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
    Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
    Acked-by: Johan Hovold <jhovold@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    gregkh authored
  12. Greg Kroah-Hartman

    Revert "usb: pl2303: remove 500000 baud from the list of standard bau…

    …d rates"
    
    This reverts commit b9208c7.
    
    Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
    they cause regressions on some versions of the chip.  This will all be
    revisited for later kernel versions when we can figure out how to handle
    this in a way that does not break working devices.
    
    Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
    Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
    Acked-by: Johan Hovold <jhovold@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    gregkh authored
  13. Greg Kroah-Hartman

    Revert "usb: pl2303: move the two baud rate encoding methods to separ…

    …ate functions"
    
    This reverts commit e917ba0.
    
    Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
    they cause regressions on some versions of the chip.  This will all be
    revisited for later kernel versions when we can figure out how to handle
    this in a way that does not break working devices.
    
    Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
    Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
    Acked-by: Johan Hovold <jhovold@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    gregkh authored
  14. Greg Kroah-Hartman

    Revert "usb: pl2303: increase the allowed baud rate range for the div…

    …isor based encoding method"
    
    This reverts commit b5c16c6.
    
    Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
    they cause regressions on some versions of the chip.  This will all be
    revisited for later kernel versions when we can figure out how to handle
    this in a way that does not break working devices.
    
    Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
    Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
    Acked-by: Johan Hovold <jhovold@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    gregkh authored
  15. Greg Kroah-Hartman

    Revert "usb: pl2303: also use the divisor based baud rate encoding me…

    …thod for baud rates < 115200 with HX chips"
    
    This reverts commit 61fa8d6.
    
    Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
    they cause regressions on some versions of the chip.  This will all be
    revisited for later kernel versions when we can figure out how to handle
    this in a way that does not break working devices.
    
    Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
    Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
    Acked-by: Johan Hovold <jhovold@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    gregkh authored
  16. Greg Kroah-Hartman

    Revert "usb: pl2303: add two comments concerning the supported baud r…

    …ates with HX chips"
    
    This reverts commit c23bda3.
    
    Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
    they cause regressions on some versions of the chip.  This will all be
    revisited for later kernel versions when we can figure out how to handle
    this in a way that does not break working devices.
    
    Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
    Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
    Acked-by: Johan Hovold <jhovold@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    gregkh authored
  17. Greg Kroah-Hartman

    Revert "pl2303: simplify the else-if contruct for type_1 chips in pl2…

    …303_startup()"
    
    This reverts commit 73b583a.
    
    Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
    they cause regressions on some versions of the chip.  This will all be
    revisited for later kernel versions when we can figure out how to handle
    this in a way that does not break working devices.
    
    Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
    Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
    Acked-by: Johan Hovold <jhovold@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    gregkh authored
  18. Greg Kroah-Hartman

    Revert "pl2303: improve the chip type information output on startup"

    This reverts commit a77a8c2.
    
    Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
    they cause regressions on some versions of the chip.  This will all be
    revisited for later kernel versions when we can figure out how to handle
    this in a way that does not break working devices.
    
    Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
    Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
    Acked-by: Johan Hovold <jhovold@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    gregkh authored
  19. Greg Kroah-Hartman

    Revert "pl2303: improve the chip type detection/distinction"

    This reverts commit 034d152.
    
    Revert all of the pl2303 changes that went into 3.12-rc1 and -rc2 as
    they cause regressions on some versions of the chip.  This will all be
    revisited for later kernel versions when we can figure out how to handle
    this in a way that does not break working devices.
    
    Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
    Cc: Frank Schäfer <fschaefer.oss@googlemail.com>
    Acked-by: Johan Hovold <jhovold@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    gregkh authored
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