Commit Graph

68836 Commits

Author SHA1 Message Date
Brian Norris 7622d4905a Linux 3.17-rc5
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Merge tag 'v3.17-rc5' from upstream
2014-09-15 16:28:16 -07:00
Linus Torvalds 9226b5b440 vfs: avoid non-forwarding large load after small store in path lookup
The performance regression that Josef Bacik reported in the pathname
lookup (see commit 99d263d4c5 "vfs: fix bad hashing of dentries") made
me look at performance stability of the dcache code, just to verify that
the problem was actually fixed.  That turned up a few other problems in
this area.

There are a few cases where we exit RCU lookup mode and go to the slow
serializing case when we shouldn't, Al has fixed those and they'll come
in with the next VFS pull.

But my performance verification also shows that link_path_walk() turns
out to have a very unfortunate 32-bit store of the length and hash of
the name we look up, followed by a 64-bit read of the combined hash_len
field.  That screws up the processor store to load forwarding, causing
an unnecessary hickup in this critical routine.

It's caused by the ugly calling convention for the "hash_name()"
function, and easily fixed by just making hash_name() fill in the whole
'struct qstr' rather than passing it a pointer to just the hash value.

With that, the profile for this function looks much smoother.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-09-14 17:28:32 -07:00
Linus Torvalds 1536340e7c Merge branches 'locking-urgent-for-linus' and 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull futex and timer fixes from Thomas Gleixner:
 "A oneliner bugfix for the jinxed futex code:

   - Drop hash bucket lock in the error exit path.  I really could slap
     myself for intruducing that bug while fixing all the other horror
     in that code three month ago ...

  and the timer department is not too proud about the following fixes:

   - Deal with a long standing rounding bug in the timeval to jiffies
     conversion.  It's a real issue and this fix fell through the cracks
     for quite some time.

   - Another round of alarmtimer fixes.  Finally this code gets used
     more widely and the subtle issues hidden for quite some time are
     noticed and fixed.  Nothing really exciting, just the itty bitty
     details which bite the serious users here and there"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Unlock hb->lock in futex_wait_requeue_pi() error path

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  alarmtimer: Lock k_itimer during timer callback
  alarmtimer: Do not signal SIGEV_NONE timers
  alarmtimer: Return relative times in timer_gettime
  jiffies: Fix timeval conversion to jiffies
2014-09-13 14:22:12 -07:00
Linus Torvalds 23d0db76ff Make hash_64() use a 64-bit multiply when appropriate
The hash_64() function historically does the multiply by the
GOLDEN_RATIO_PRIME_64 number with explicit shifts and adds, because
unlike the 32-bit case, gcc seems unable to turn the constant multiply
into the more appropriate shift and adds when required.

However, that means that we generate those shifts and adds even when the
architecture has a fast multiplier, and could just do it better in
hardware.

Use the now-cleaned-up CONFIG_ARCH_HAS_FAST_MULTIPLIER (together with
"is it a 64-bit architecture") to decide whether to use an integer
multiply or the explicit sequence of shift/add instructions.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-09-13 11:24:03 -07:00
Linus Torvalds fc486b03ca Fix "xen_add_mach_to_phys_entry: cannot add" problem on xen on arm and
arm64.
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Merge tag 'stable/for-linus-3.17-b-rc4-arm-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull Xen ARM bugfix from Stefano Stabellini:
 "The patches fix the "xen_add_mach_to_phys_entry: cannot add" bug that
  has been affecting xen on arm and arm64 guests since 3.16.  They
  require a few hypervisor side changes that just went in xen-unstable.

  A couple of days ago David sent out a pull request with a few other
  Xen fixes (it is already in master).  Sorry we didn't synchronized
  better among us"

* tag 'stable/for-linus-3.17-b-rc4-arm-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/arm: remove mach_to_phys rbtree
  xen/arm: reimplement xen_dma_unmap_page & friends
  xen/arm: introduce XENFEAT_grant_map_identity
2014-09-12 17:45:27 -07:00
Andrew Hunter d78c9300c5 jiffies: Fix timeval conversion to jiffies
timeval_to_jiffies tried to round a timeval up to an integral number
of jiffies, but the logic for doing so was incorrect: intervals
corresponding to exactly N jiffies would become N+1. This manifested
itself particularly repeatedly stopping/starting an itimer:

setitimer(ITIMER_PROF, &val, NULL);
setitimer(ITIMER_PROF, NULL, &val);

would add a full tick to val, _even if it was exactly representable in
terms of jiffies_ (say, the result of a previous rounding.)  Doing
this repeatedly would cause unbounded growth in val.  So fix the math.

Here's what was wrong with the conversion: we essentially computed
(eliding seconds)

jiffies = usec  * (NSEC_PER_USEC/TICK_NSEC)

by using scaling arithmetic, which took the best approximation of
NSEC_PER_USEC/TICK_NSEC with denominator of 2^USEC_JIFFIE_SC =
x/(2^USEC_JIFFIE_SC), and computed:

jiffies = (usec * x) >> USEC_JIFFIE_SC

and rounded this calculation up in the intermediate form (since we
can't necessarily exactly represent TICK_NSEC in usec.) But the
scaling arithmetic is a (very slight) *over*approximation of the true
value; that is, instead of dividing by (1 usec/ 1 jiffie), we
effectively divided by (1 usec/1 jiffie)-epsilon (rounding
down). This would normally be fine, but we want to round timeouts up,
and we did so by adding 2^USEC_JIFFIE_SC - 1 before the shift; this
would be fine if our division was exact, but dividing this by the
slightly smaller factor was equivalent to adding just _over_ 1 to the
final result (instead of just _under_ 1, as desired.)

In particular, with HZ=1000, we consistently computed that 10000 usec
was 11 jiffies; the same was true for any exact multiple of
TICK_NSEC.

We could possibly still round in the intermediate form, adding
something less than 2^USEC_JIFFIE_SC - 1, but easier still is to
convert usec->nsec, round in nanoseconds, and then convert using
time*spec*_to_jiffies.  This adds one constant multiplication, and is
not observably slower in microbenchmarks on recent x86 hardware.

Tested: the following program:

int main() {
  struct itimerval zero = {{0, 0}, {0, 0}};
  /* Initially set to 10 ms. */
  struct itimerval initial = zero;
  initial.it_interval.tv_usec = 10000;
  setitimer(ITIMER_PROF, &initial, NULL);
  /* Save and restore several times. */
  for (size_t i = 0; i < 10; ++i) {
    struct itimerval prev;
    setitimer(ITIMER_PROF, &zero, &prev);
    /* on old kernels, this goes up by TICK_USEC every iteration */
    printf("previous value: %ld %ld %ld %ld\n",
           prev.it_interval.tv_sec, prev.it_interval.tv_usec,
           prev.it_value.tv_sec, prev.it_value.tv_usec);
    setitimer(ITIMER_PROF, &prev, NULL);
  }
    return 0;
}

Cc: stable@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul Turner <pjt@google.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Reviewed-by: Paul Turner <pjt@google.com>
Reported-by: Aaron Jacobs <jacobsa@google.com>
Signed-off-by: Andrew Hunter <ahh@google.com>
[jstultz: Tweaked to apply to 3.17-rc]
Signed-off-by: John Stultz <john.stultz@linaro.org>
2014-09-12 13:59:03 -07:00
Linus Torvalds 90a3c48fbf USB fixes for 3.17-rc5
Here are some USB and PHY fixes for 3.17-rc5.
 
 Nothing major here, just a number of tiny fixes for reported issues, and
 some new device ids as well.
 
 All have been tested in linux-next.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some USB and PHY fixes for 3.17-rc5.

  Nothing major here, just a number of tiny fixes for reported issues,
  and some new device ids as well.

  All have been tested in linux-next"

* tag 'usb-3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (46 commits)
  xhci: fix oops when xhci resumes from hibernate with hw lpm capable devices
  usb: xhci: Fix OOPS in xhci error handling code
  xhci: Fix null pointer dereference if xhci initialization fails
  storage: Add single-LUN quirk for Jaz USB Adapter
  uas: Add missing le16_to_cpu calls to asm1051 / asm1053 usb-id check
  usb: chipidea: msm: Initialize PHY on reset event
  usb: chipidea: msm: Use USB PHY API to control PHY state
  usb: hub: take hub->hdev reference when processing from eventlist
  uas: Disable uas on ASM1051 devices
  usb: dwc2/gadget: avoid disabling ep0
  usb: dwc2/gadget: delay enabling irq once hardware is configured properly
  usb: dwc2/gadget: do not call disconnect method in pullup
  usb: dwc2/gadget: break infinite loop in endpoint disable code
  usb: dwc2/gadget: fix phy initialization sequence
  usb: dwc2/gadget: fix phy disable sequence
  uwb: init beacon cache entry before registering uwb device
  USB: ftdi_sio: Add support for GE Healthcare Nemo Tracker device
  USB: document the 'u' flag for usb-storage quirks parameter
  usb: host: xhci: fix compliance mode workaround
  usb: dwc3: fix TRB completion when multiple TRBs are started
  ...
2014-09-12 11:59:10 -07:00
Stefano Stabellini 5ebc77de83 xen/arm: introduce XENFEAT_grant_map_identity
The flag tells us that the hypervisor maps a grant page to guest
physical address == machine address of the page in addition to the
normal grant mapping address. It is needed to properly issue cache
maintenance operation at the completion of a DMA operation involving a
foreign grant.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Tested-by: Denis Schneider <v1ne2go@gmail.com>
2014-09-11 18:11:52 +00:00
Linus Torvalds c8c16e3624 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
 "An update to Synaptics PS/2 driver to handle "ForcePads" (currently
  found in HP EliteBook 1040 laptops), a change for Elan PS/2 driver to
  detect newer touchpads, bunch of devices get annotated as Trackpoint
  and/or Pointer to help userspace classify and handle them, plus
  assorted driver fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: serport - add compat handling for SPIOCSTYPE ioctl
  Input: atmel_mxt_ts - fix double free of input device
  Input: synaptics - add support for ForcePads
  Input: matrix_keypad - use request_any_context_irq()
  Input: atmel_mxt_ts - downgrade warning about empty interrupts
  Input: wm971x - fix typo in module parameter description
  Input: cap1106 - fix register definition
  Input: add missing POINTER / DIRECT properties to a bunch of drivers
  Input: add INPUT_PROP_POINTING_STICK property
  Input: elantech - fix detection of touchpad on ASUS s301l
2014-09-11 10:08:36 -07:00
David Drysdale b01d072065 shm: add memfd.h to UAPI export list
The new header file memfd.h from commit 9183df25fe ("shm: add
memfd_create() syscall") should be exported.

Signed-off-by: David Drysdale <drysdale@google.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-09-10 15:42:12 -07:00
Hans de Goede 7611392fe8 Input: add INPUT_PROP_POINTING_STICK property
It is useful for userspace to know that there not dealing with a regular
mouse but rather with a pointing stick (e.g. a trackpoint) so that
userspace can e.g. automatically enable middle button scrollwheel
emulation.

It is impossible to tell the difference from the evdev info without
resorting to putting a list of device / driver names in userspace, this is
undesirable.

Add a property which allows userspace to see if a device is a pointing
stick, and set it on all the pointing stick drivers.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-09-08 14:58:11 -07:00
Linus Torvalds b531f5dd9c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix skb leak in mac802154, from Martin Townsend

 2) Use select not depends on NF_NAT for NFT_NAT, from Pablo Neira
    Ayuso

 3) Fix union initializer bogosity in vxlan, from Gerhard Stenzel

 4) Fix RX checksum configuration in stmmac driver, from Giuseppe
    CAVALLARO

 5) Fix TSO with non-accelerated VLANs in e1000, e1000e, bna, ehea,
    i40e, i40evf, mvneta, and qlge, from Vlad Yasevich

 6) Fix capability checks in phy_init_eee(), from Giuseppe CAVALLARO

 7) Try high order allocations more sanely for SKBs, specifically if a
    high order allocation fails, fall back directly to zero order pages
    rather than iterating down one order at a time.  From Eric Dumazet

 8) Fix a memory leak in openvswitch, from Li RongQing

 9) amd-xgbe initializes wrong spinlock, from Thomas Lendacky

10) RTNL locking was busted in setsockopt for anycast and multicast, fix
    from Sabrina Dubroca

11) Fix peer address refcount leak in ipv6, from Nicolas Dichtel

12) DocBook typo fixes, from Masanari Iida

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (101 commits)
  ipv6: restore the behavior of ipv6_sock_ac_drop()
  amd-xgbe: Enable interrupts for all management counters
  amd-xgbe: Treat certain counter registers as 64 bit
  greth: moved TX ring cleaning to NAPI rx poll func
  cnic : Cleanup CONFIG_IPV6 & VLAN check
  net: treewide: Fix typo found in DocBook/networking.xml
  bnx2x: Fix link problems for 1G SFP RJ45 module
  3c59x: avoid panic in boomerang_start_xmit when finding page address:
  netfilter: add explicit Kconfig for NETFILTER_XT_NAT
  ipv6: use addrconf_get_prefix_route() to remove peer addr
  ipv6: fix a refcnt leak with peer addr
  net-timestamp: only report sw timestamp if reporting bit is set
  drivers/net/fddi/skfp/h/skfbi.h: Remove useless PCI_BASE_2ND macros
  l2tp: fix race while getting PMTU on PPP pseudo-wire
  ipv6: fix rtnl locking in setsockopt for anycast and multicast
  VMXNET3: Check for map error in vmxnet3_set_mc
  openvswitch: distinguish between the dropped and consumed skb
  amd-xgbe: Fix initialization of the wrong spin lock
  openvswitch: fix a memory leak
  netfilter: fix missing dependencies in NETFILTER_XT_TARGET_LOG
  ...
2014-09-07 19:56:38 -07:00
David S. Miller 45ce829dd0 Merge tag 'master-2014-09-04' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville says:

====================
pull request: wireless 2014-09-05

Please pull this batch of fixes intended for the 3.17 stream...

For the mac80211 bits, Johannes says:

"Here are a few fixes for mac80211. One has been discussed for a while
and adds a terminating NUL-byte to the alpha2 sent to userspace, which
shouldn't be necessary but since many places treat it as a string we
couldn't move to just sending two bytes.

In addition to that, we have two VLAN fixes from Felix, a mesh fix, a
fix for the recently introduced RX aggregation offload, a revert for
a broken patch (that luckily didn't really cause any harm) and a small
fix for alignment in debugfs."

For the iwlwifi bits, Emmanuel says:

"I revert a patch that disabled CTS to self in dvm because users
reported issues. The revert is CCed to stable since the offending
patch was sent to stable too. I also bump the firmware API versions
since a new firmware is coming up. On top of that, Marcel fixes a
bug I introduced while fixing a bug in our Kconfig file."

Please let me know if there are problems!
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-07 16:11:10 -07:00
Linus Torvalds 6fef37c9a7 ACPI and power management fixes for 3.17-rc4
- Fix for recently broken test_suspend= command line argument
    (Rafael J Wysocki).
 
  - Fixes for regressions related to the ACPI video driver caused
    by switching the default to native backlight handling in 3.16
    from Hans de Goede.
 
  - Fix for a sysfs attribute of ACPI device objects that returns
    stale values sometimes due to the fact that they are cached
    instead of executing the appropriate method (_SUN) every time
    (broken in 3.14).  From Yasuaki Ishimatsu.
 
  - Fix for a deadlock between cpuidle_lock and cpu_hotplug.lock
    in the ACPI processor driver from Jiri Kosina.
 
  - Runtime output validation for the ACPI _DSD device configuration
    object missing from the support for it that has been introduced
    recently.  From Mika Westerberg.
 
  - Fix for an unuseful and misleading RAPL (Running Average Power
    Limit) domain detection message in the RAPL driver from Jacob Pan.
 
  - New Intel Haswell CPU ID for the RAPL driver from Jason Baron.
 
  - New Clevo W350etq blacklist entry for the ACPI EC driver
    from Lan Tianyu.
 
  - Cleanup for the intel_pstate driver and the core generic PM
    domains code from Gabriele Mazzotta and Geert Uytterhoeven.
 
 /
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Merge tag 'pm+acpi-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:
 "These are regression fixes (ACPI sysfs, ACPI video, suspend test),
  ACPI cpuidle deadlock fix, missing runtime validation of ACPI _DSD
  output, a fix and a new CPU ID for the RAPL driver, new blacklist
  entry for the ACPI EC driver and a couple of trivial cleanups
  (intel_pstate and generic PM domains).

  Specifics:

   - Fix for recently broken test_suspend= command line argument (Rafael
     Wysocki).

   - Fixes for regressions related to the ACPI video driver caused by
     switching the default to native backlight handling in 3.16 from
     Hans de Goede.

   - Fix for a sysfs attribute of ACPI device objects that returns stale
     values sometimes due to the fact that they are cached instead of
     executing the appropriate method (_SUN) every time (broken in
     3.14).  From Yasuaki Ishimatsu.

   - Fix for a deadlock between cpuidle_lock and cpu_hotplug.lock in the
     ACPI processor driver from Jiri Kosina.

   - Runtime output validation for the ACPI _DSD device configuration
     object missing from the support for it that has been introduced
     recently.  From Mika Westerberg.

   - Fix for an unuseful and misleading RAPL (Running Average Power
     Limit) domain detection message in the RAPL driver from Jacob Pan.

   - New Intel Haswell CPU ID for the RAPL driver from Jason Baron.

   - New Clevo W350etq blacklist entry for the ACPI EC driver from Lan
     Tianyu.

   - Cleanup for the intel_pstate driver and the core generic PM domains
     code from Gabriele Mazzotta and Geert Uytterhoeven"

* tag 'pm+acpi-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / cpuidle: fix deadlock between cpuidle_lock and cpu_hotplug.lock
  ACPI / scan: not cache _SUN value in struct acpi_device_pnp
  cpufreq: intel_pstate: Remove unneeded variable
  powercap / RAPL: change domain detection message
  powercap / RAPL: add support for CPU model 0x3f
  PM / domains: Make generic_pm_domain.name const
  PM / sleep: Fix test_suspend= command line option
  ACPI / EC: Add msi quirk for Clevo W350etq
  ACPI / video: Disable native_backlight on HP ENVY 15 Notebook PC
  ACPI / video: Add a disable_native_backlight quirk
  ACPI / video: Fix use_native_backlight selection logic
  ACPICA: ACPI 5.1: Add support for runtime validation of _DSD package.
2014-09-07 11:57:27 -07:00
Linus Torvalds ebc54f278f Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
 "Three fixlets from the timer departement:

   - Update the timekeeper before updating vsyscall and pvclock.  This
     fixes the kvm-clock regression reported by Chris and Paolo.

   - Use the proper irq work interface from NMI.  This fixes the
     regression reported by Catalin and Dave.

   - Clarify the compat_nanosleep error handling mechanism to avoid
     future confusion"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timekeeping: Update timekeeper before updating vsyscall and pvclock
  compat: nanosleep: Clarify error handling
  nohz: Restore NMI safe local irq work for local nohz kick
2014-09-07 10:37:48 -07:00
Linus Torvalds 925e0ea47c Two trivial MTD updates for 3.17-rc4:
* A tiny comment tweak, to kill a bunch of DocBook warnings added during the
    merge window
 
  * A small fixup to the OTP routines' error handling
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Merge tag 'for-linus-20140905' of git://git.infradead.org/linux-mtd

Pull mtd fixes from Brian Norris:
 "Two trivial MTD updates for 3.17-rc4:

   - a tiny comment tweak, to kill a bunch of DocBook warnings added
     during the merge window

   - a small fixup to the OTP routines' error handling"

* tag 'for-linus-20140905' of git://git.infradead.org/linux-mtd:
  mtd: nand: fix DocBook warnings on nand_sdr_timings doc
  mtd: cfi_cmdset_0002: check return code for get_chip()
2014-09-06 12:12:09 -07:00
Masanari Iida e793c0f70e net: treewide: Fix typo found in DocBook/networking.xml
This patch fix spelling typo found in DocBook/networking.xml.
It is because the neworking.xml is generated from comments
in the source, I have to fix typo in comments within the source.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-05 17:35:28 -07:00
Willem de Bruijn c199105d15 net-timestamp: only report sw timestamp if reporting bit is set
The timestamping API has separate bits for generating and reporting
timestamps. A software timestamp should only be reported for a packet
when the packet has the relevant generation flag (SKBTX_..) set
and the socket has reporting bit SOF_TIMESTAMPING_SOFTWARE set.

The second check was accidentally removed. Reinstitute the original
behavior.

Tested:
  Without this patch, Documentation/networking/txtimestamp reports
  timestamps regardless of whether SOF_TIMESTAMPING_SOFTWARE is set.
  After the patch, it only reports them when the flag is set.

Fixes: f24b9be595 ("net-timestamp: extend SCM_TIMESTAMPING ancillary data struct")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-05 15:02:43 -07:00
Linus Torvalds 8e6353bba3 regulator: Documentation fixes for v3.17
All the fixes people have found for the regulator API have been
 documentation fixes, avoiding warnings while building the kerneldoc,
 fixing some errors in one of the DT bindings documents and fixing some
 typos in the header.
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Merge tag 'regulator-v3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator documentation fixes from Mark Brown:
 "All the fixes people have found for the regulator API have been
  documentation fixes, avoiding warnings while building the kerneldoc,
  fixing some errors in one of the DT bindings documents and fixing some
  typos in the header"

* tag 'regulator-v3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: fix kernel-doc warnings in header files
  regulator: Proofread documentation
  regulator: tps65090: Fix tps65090 typos in example
2014-09-05 08:09:02 -07:00
Linus Torvalds 5e6c72396c GPIO fixes for the v3.17 series:
- Some documentation sync
 - Resource leak in the bt8xx driver
 - Again fix the way varargs are used to handle the
   optional flags on the gpiod_* accessors. Now hopefully
   nailed the entire problem.
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Merge tag 'gpio-v3.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 - some documentation sync
 - resource leak in the bt8xx driver
 - again fix the way varargs are used to handle the optional flags on
   the gpiod_* accessors.  Now hopefully nailed the entire problem.

* tag 'gpio-v3.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: move varargs hack outside #ifdef GPIOLIB
  gpio: bt8xx: fix release of managed resources
  Documentation: gpio: documentation for optional getters functions
2014-09-05 08:04:29 -07:00
Rafael J. Wysocki 9aa4e2f6ac Merge branches 'pm-sleep', 'powercap', 'pm-domains' and 'pm-cpufreq'
* pm-sleep:
  PM / sleep: Fix test_suspend= command line option

* powercap:
  powercap / RAPL: change domain detection message
  powercap / RAPL: add support for CPU model 0x3f

* pm-domains:
  PM / domains: Make generic_pm_domain.name const

* pm-cpufreq:
  cpufreq: intel_pstate: Remove unneeded variable
2014-09-05 15:29:56 +02:00
Mark Brown a65c866306 Merge remote-tracking branches 'regulator/fix/doc' and 'regulator/fix/tps65090' into regulator-linus 2014-09-05 10:53:18 +01:00
Piotr Król 6fa9e1be7f usb: usbip: fix usbip.h path in userspace tool
Fixes: 588b48caf6 ("usbip: move usbip userspace code out of staging")
which introduced build failure by not changing uapi/usbip.h include path
according to new location.

Signed-off-by: Piotr Król <piotr.krol@3mdeb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-04 16:25:30 -07:00
Frederic Weisbecker 40bea03959 nohz: Restore NMI safe local irq work for local nohz kick
The local nohz kick is currently used by perf which needs it to be
NMI-safe. Recent commit though (7d1311b93e)
changed its implementation to fire the local kick using the remote kick
API. It was convenient to make the code more generic but the remote kick
isn't NMI-safe.

As a result:

	WARNING: CPU: 3 PID: 18062 at kernel/irq_work.c:72 irq_work_queue_on+0x11e/0x140()
	CPU: 3 PID: 18062 Comm: trinity-subchil Not tainted 3.16.0+ #34
	0000000000000009 00000000903774d1 ffff880244e06c00 ffffffff9a7f1e37
	0000000000000000 ffff880244e06c38 ffffffff9a0791dd ffff880244fce180
	0000000000000003 ffff880244e06d58 ffff880244e06ef8 0000000000000000
	Call Trace:
	<NMI>  [<ffffffff9a7f1e37>] dump_stack+0x4e/0x7a
	[<ffffffff9a0791dd>] warn_slowpath_common+0x7d/0xa0
	[<ffffffff9a07930a>] warn_slowpath_null+0x1a/0x20
	[<ffffffff9a17ca1e>] irq_work_queue_on+0x11e/0x140
	[<ffffffff9a10a2c7>] tick_nohz_full_kick_cpu+0x57/0x90
	[<ffffffff9a186cd5>] __perf_event_overflow+0x275/0x350
	[<ffffffff9a184f80>] ? perf_event_task_disable+0xa0/0xa0
	[<ffffffff9a01a4cf>] ? x86_perf_event_set_period+0xbf/0x150
	[<ffffffff9a187934>] perf_event_overflow+0x14/0x20
	[<ffffffff9a020386>] intel_pmu_handle_irq+0x206/0x410
	[<ffffffff9a0b54d3>] ? arch_vtime_task_switch+0x63/0x130
	[<ffffffff9a01937b>] perf_event_nmi_handler+0x2b/0x50
	[<ffffffff9a007b72>] nmi_handle+0xd2/0x390
	[<ffffffff9a007aa5>] ? nmi_handle+0x5/0x390
	[<ffffffff9a0d131b>] ? lock_release+0xab/0x330
	[<ffffffff9a008062>] default_do_nmi+0x72/0x1c0
	[<ffffffff9a0c925f>] ? cpuacct_account_field+0xcf/0x200
	[<ffffffff9a008268>] do_nmi+0xb8/0x100

Lets fix this by restoring the use of local irq work for the nohz local
kick.

Reported-by: Catalin Iacob <iacobcatalin@gmail.com>
Reported-and-tested-by: Dave Jones <davej@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2014-09-04 22:35:59 +02:00
John W. Linville 190355cc06 Here are a few fixes for mac80211. One has been discussed for a while
and adds a terminating NUL-byte to the alpha2 sent to userspace, which
 shouldn't be necessary but since many places treat it as a string we
 couldn't move to just sending two bytes.
 
 In addition to that, we have two VLAN fixes from Felix, a mesh fix, a
 fix for the recently introduced RX aggregation offload, a revert for
 a broken patch (that luckily didn't really cause any harm) and a small
 fix for alignment in debugfs.
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Merge tag 'mac80211-for-john-2014-08-29' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg <johannes@sipsolutions.net> says:

"Here are a few fixes for mac80211. One has been discussed for a while
and adds a terminating NUL-byte to the alpha2 sent to userspace, which
shouldn't be necessary but since many places treat it as a string we
couldn't move to just sending two bytes.

In addition to that, we have two VLAN fixes from Felix, a mesh fix, a
fix for the recently introduced RX aggregation offload, a revert for
a broken patch (that luckily didn't really cause any harm) and a small
fix for alignment in debugfs."

Signed-off-by: John W. Linville <linville@redhat.com>
2014-09-04 13:08:24 -04:00
Linus Torvalds 57b252f8fd sound fixes for 3.17-rc4
This time it contains a bunch of small ASoC fixes that slipped from in
 previous updates, in addition to the usual HD-audio fixes and the
 regression fixes for FireWire updates in 3.17.
 All commits are reasonably small fixes.
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Merge tag 'sound-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This time it contains a bunch of small ASoC fixes that slipped from in
  previous updates, in addition to the usual HD-audio fixes and the
  regression fixes for FireWire updates in 3.17.

  All commits are reasonably small fixes"

* tag 'sound-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Fix COEF setups for ALC1150 codec
  ASoC: simple-card: Fix bug of wrong decrement DT node's refcount
  ALSA: hda - Fix digital mic on Acer Aspire 3830TG
  ASoC: omap-twl4030: Fix typo in 2nd dai link's platform_name
  ALSA: firewire-lib/dice: add arrangements of PCM pointer and interrupts for Dice quirk
  ALSA: dice: fix wrong channel mappping at higher sampling rate
  ASoC: cs4265: Fix setting of functional mode and clock divider
  ASoC: cs4265: Fix clock rates in clock map table
  ASoC: rt5677: correct mismatch widget name
  ASoC: rt5640: Do not allow regmap to use bulk read-write operations
  ASoC: tegra: Fix typo in include guard
  ASoC: da732x: Fix typo in include guard
  ASoC: core: fix .info for SND_SOC_BYTES_TLV
  ASoC: rcar: Use && instead of & for boolean expressions
  ASoC: Use dev_set_name() instead of init_name
  ASoC: axi: Fix ADI AXI SPDIF specification
2014-09-04 08:49:06 -07:00
Yasuaki Ishimatsu a383b68d9f ACPI / scan: not cache _SUN value in struct acpi_device_pnp
The _SUN device indentification object is not guaranteed to return
the same value every time it is executed, so we should not cache its
return value, but rather execute it every time as needed.  If it is
cached, an incorrect stale value may be used in some situations.

This issue was exposed by commit 202317a573 (ACPI / scan: Add
acpi_device objects for all device nodes in the namespace).  Fix it
by avoiding to cache the return value of _SUN.

Fixes: 202317a573 (ACPI / scan: Add acpi_device objects for all device nodes in the namespace)
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: 3.14+ <stable@vger.kernel.org> # 3.14+
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-09-03 22:41:14 +02:00
Linus Torvalds 70c8038dd6 Merge tag 'for-f2fs-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs bug fixes from Jaegeuk Kim:
 "This series includes patches to:

   - fix recovery routines
   - fix bugs related to inline_data/xattr
   - fix when casting the dentry names
   - handle EIO or ENOMEM correctly
   - fix memory leak
   - fix lock coverage"

* tag 'for-f2fs-3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (28 commits)
  f2fs: reposition unlock_new_inode to prevent accessing invalid inode
  f2fs: fix wrong casting for dentry name
  f2fs: simplify by using a literal
  f2fs: truncate stale block for inline_data
  f2fs: use macro for code readability
  f2fs: introduce need_do_checkpoint for readability
  f2fs: fix incorrect calculation with total/free inode num
  f2fs: remove rename and use rename2
  f2fs: skip if inline_data was converted already
  f2fs: remove rewrite_node_page
  f2fs: avoid double lock in truncate_blocks
  f2fs: prevent checkpoint during roll-forward
  f2fs: add WARN_ON in f2fs_bug_on
  f2fs: handle EIO not to break fs consistency
  f2fs: check s_dirty under cp_mutex
  f2fs: unlock_page when node page is redirtied out
  f2fs: introduce f2fs_cp_error for readability
  f2fs: give a chance to mount again when encountering errors
  f2fs: trigger release_dirty_inode in f2fs_put_super
  f2fs: don't skip checkpoint if there is no dirty node pages
  ...
2014-09-03 10:10:28 -07:00
Geert Uytterhoeven d07e9c178f PM / domains: Make generic_pm_domain.name const
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-09-03 01:25:32 +02:00
Mark Brown e65f6b1eb5 Merge remote-tracking branch 'asoc/fix/core' into asoc-linus 2014-09-02 23:33:38 +01:00
David S. Miller abccc5878a Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:

====================
pull request: Netfilter/IPVS fixes for net

The following patchset contains seven Netfilter fixes for your net
tree, they are:

1) Make the NAT infrastructure independent of x_tables, some users are
   already starting to test nf_tables with NAT without enabling x_tables.
   Without this patch for Kconfig, there's a superfluous dependency
   between NAT and x_tables.
2) Allow to use 0 in the cgroup match, the kernel rejects with -EINVAL
   with no good reason. From Daniel Borkmann.

3) Select CONFIG_NF_NAT from the nf_tables NAT expression, this also
   resolves another NAT dependency with x_tables.

4) Use HAVE_JUMP_LABEL instead of CONFIG_JUMP_LABEL in the Netfilter hook
   code as elsewhere in the kernel to resolve toolchain problems, from
   Zhouyi Zhou.

5) Use iptunnel_handle_offloads() to set up tunnel encapsulation
   depending on the offload capabilities, reported by Alex Gartrell
   patch from Julian Anastasov.

6) Fix wrong family when registering the ip_vs_local_reply6() hook,
   also from Julian.

7) Select the NF_LOG_* symbols from NETFILTER_XT_TARGET_LOG. Rafał
   Miłecki reported that when jumping from 3.16 to 3.17-rc, his log
   target is not selected anymore due to changes in the previous
   development cycle to accomodate the full logging support for
   nf_tables.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-02 13:56:30 -07:00
Jiri Kosina 9067359faf Revert "leds: convert blink timer to workqueue"
This reverts commit 8b37e1bef5.

It's broken as it changes led_blink_set() in a way that it can now sleep
(while synchronously waiting for workqueue to be cancelled). That's a
problem, because it's possible that this function gets called from atomic
context (tpt_trig_timer() takes a readlock and thus disables preemption).

This has been brought up 3 weeks ago already [1] but no proper fix has
materialized, and I keep seeing the problem since 3.17-rc1.

[1] https://lkml.org/lkml/2014/8/16/128

 BUG: sleeping function called from invalid context at kernel/workqueue.c:2650
 in_atomic(): 1, irqs_disabled(): 0, pid: 2335, name: wpa_supplicant
 5 locks held by wpa_supplicant/2335:
  #0:  (rtnl_mutex){+.+.+.}, at: [<ffffffff814c7c92>] rtnl_lock+0x12/0x20
  #1:  (&wdev->mtx){+.+.+.}, at: [<ffffffffc06e649c>] cfg80211_mgd_wext_siwessid+0x5c/0x180 [cfg80211]
  #2:  (&local->mtx){+.+.+.}, at: [<ffffffffc0817dea>] ieee80211_prep_connection+0x17a/0x9a0 [mac80211]
  #3:  (&local->chanctx_mtx){+.+.+.}, at: [<ffffffffc08081ed>] ieee80211_vif_use_channel+0x5d/0x2a0 [mac80211]
  #4:  (&trig->leddev_list_lock){.+.+..}, at: [<ffffffffc081e68c>] tpt_trig_timer+0xec/0x170 [mac80211]
 CPU: 0 PID: 2335 Comm: wpa_supplicant Not tainted 3.17.0-rc3 #1
 Hardware name: LENOVO 7470BN2/7470BN2, BIOS 6DET38WW (2.02 ) 12/19/2008
  ffff8800360b5a50 ffff8800751f76d8 ffffffff8159e97f ffff8800360b5a30
  ffff8800751f76e8 ffffffff810739a5 ffff8800751f77b0 ffffffff8106862f
  ffffffff810685d0 0aa2209200000000 ffff880000000004 ffff8800361c59d0
 Call Trace:
  [<ffffffff8159e97f>] dump_stack+0x4d/0x66
  [<ffffffff810739a5>] __might_sleep+0xe5/0x120
  [<ffffffff8106862f>] flush_work+0x5f/0x270
  [<ffffffff810685d0>] ? mod_delayed_work_on+0x80/0x80
  [<ffffffff810945ca>] ? mark_held_locks+0x6a/0x90
  [<ffffffff81068a5f>] ? __cancel_work_timer+0x6f/0x100
  [<ffffffff810946ed>] ? trace_hardirqs_on_caller+0xfd/0x1c0
  [<ffffffff81068a6b>] __cancel_work_timer+0x7b/0x100
  [<ffffffff81068b0e>] cancel_delayed_work_sync+0xe/0x10
  [<ffffffff8147cf3b>] led_blink_set+0x1b/0x40
  [<ffffffffc081e6b0>] tpt_trig_timer+0x110/0x170 [mac80211]
  [<ffffffffc081ecdd>] ieee80211_mod_tpt_led_trig+0x9d/0x160 [mac80211]
  [<ffffffffc07e4278>] __ieee80211_recalc_idle+0x98/0x140 [mac80211]
  [<ffffffffc07e59ce>] ieee80211_idle_off+0xe/0x10 [mac80211]
  [<ffffffffc0804e5b>] ieee80211_add_chanctx+0x3b/0x220 [mac80211]
  [<ffffffffc08062e4>] ieee80211_new_chanctx+0x44/0xf0 [mac80211]
  [<ffffffffc080838a>] ieee80211_vif_use_channel+0x1fa/0x2a0 [mac80211]
  [<ffffffffc0817df8>] ieee80211_prep_connection+0x188/0x9a0 [mac80211]
  [<ffffffffc081c246>] ieee80211_mgd_auth+0x256/0x2e0 [mac80211]
  [<ffffffffc07eab33>] ieee80211_auth+0x13/0x20 [mac80211]
  [<ffffffffc06cb006>] cfg80211_mlme_auth+0x106/0x270 [cfg80211]
  [<ffffffffc06ce085>] cfg80211_conn_do_work+0x155/0x3b0 [cfg80211]
  [<ffffffffc06cf670>] cfg80211_connect+0x3f0/0x540 [cfg80211]
  [<ffffffffc06e6148>] cfg80211_mgd_wext_connect+0x158/0x1f0 [cfg80211]
  [<ffffffffc06e651e>] cfg80211_mgd_wext_siwessid+0xde/0x180 [cfg80211]
  [<ffffffffc06e36c0>] ? cfg80211_wext_giwessid+0x50/0x50 [cfg80211]
  [<ffffffffc06e36dd>] cfg80211_wext_siwessid+0x1d/0x40 [cfg80211]
  [<ffffffff81584d0c>] ioctl_standard_iw_point+0x14c/0x3e0
  [<ffffffff810946ed>] ? trace_hardirqs_on_caller+0xfd/0x1c0
  [<ffffffff8158502a>] ioctl_standard_call+0x8a/0xd0
  [<ffffffff81584fa0>] ? ioctl_standard_iw_point+0x3e0/0x3e0
  [<ffffffff81584b76>] wireless_process_ioctl.constprop.10+0xb6/0x100
  [<ffffffff8158521d>] wext_handle_ioctl+0x5d/0xb0
  [<ffffffff814cfb29>] dev_ioctl+0x329/0x620
  [<ffffffff810946ed>] ? trace_hardirqs_on_caller+0xfd/0x1c0
  [<ffffffff8149c7f2>] sock_ioctl+0x142/0x2e0
  [<ffffffff811b0140>] do_vfs_ioctl+0x300/0x520
  [<ffffffff815a67fb>] ? sysret_check+0x1b/0x56
  [<ffffffff810946ed>] ? trace_hardirqs_on_caller+0xfd/0x1c0
  [<ffffffff811b03e1>] SyS_ioctl+0x81/0xa0
  [<ffffffff815a67d6>] system_call_fastpath+0x1a/0x1f
 wlan0: send auth to 00:0b:6b:3c:8c:e4 (try 1/3)
 wlan0: authenticated
 wlan0: associate with 00:0b:6b:3c:8c:e4 (try 1/3)
 wlan0: RX AssocResp from 00:0b:6b:3c:8c:e4 (capab=0x431 status=0 aid=2)
 wlan0: associated
 IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
 cfg80211: Calling CRDA for country: NA
 wlan0: Limiting TX power to 27 (27 - 0) dBm as advertised by 00:0b:6b:3c:8c:e4

 =================================
 [ INFO: inconsistent lock state ]
 3.17.0-rc3 #1 Not tainted
 ---------------------------------
 inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
 swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
  ((&(&led_cdev->blink_work)->work)){+.?...}, at: [<ffffffff810685d0>] flush_work+0x0/0x270
 {SOFTIRQ-ON-W} state was registered at:
   [<ffffffff81094dbe>] __lock_acquire+0x30e/0x1a30
   [<ffffffff81096c81>] lock_acquire+0x91/0x110
   [<ffffffff81068608>] flush_work+0x38/0x270
   [<ffffffff81068a6b>] __cancel_work_timer+0x7b/0x100
   [<ffffffff81068b0e>] cancel_delayed_work_sync+0xe/0x10
   [<ffffffff8147cf3b>] led_blink_set+0x1b/0x40
   [<ffffffffc081e6b0>] tpt_trig_timer+0x110/0x170 [mac80211]
   [<ffffffffc081ecdd>] ieee80211_mod_tpt_led_trig+0x9d/0x160 [mac80211]
   [<ffffffffc07e4278>] __ieee80211_recalc_idle+0x98/0x140 [mac80211]
   [<ffffffffc07e59ce>] ieee80211_idle_off+0xe/0x10 [mac80211]
   [<ffffffffc0804e5b>] ieee80211_add_chanctx+0x3b/0x220 [mac80211]
   [<ffffffffc08062e4>] ieee80211_new_chanctx+0x44/0xf0 [mac80211]
   [<ffffffffc080838a>] ieee80211_vif_use_channel+0x1fa/0x2a0 [mac80211]
   [<ffffffffc0817df8>] ieee80211_prep_connection+0x188/0x9a0 [mac80211]
   [<ffffffffc081c246>] ieee80211_mgd_auth+0x256/0x2e0 [mac80211]
   [<ffffffffc07eab33>] ieee80211_auth+0x13/0x20 [mac80211]
   [<ffffffffc06cb006>] cfg80211_mlme_auth+0x106/0x270 [cfg80211]
   [<ffffffffc06ce085>] cfg80211_conn_do_work+0x155/0x3b0 [cfg80211]
   [<ffffffffc06cf670>] cfg80211_connect+0x3f0/0x540 [cfg80211]
   [<ffffffffc06e6148>] cfg80211_mgd_wext_connect+0x158/0x1f0 [cfg80211]
   [<ffffffffc06e651e>] cfg80211_mgd_wext_siwessid+0xde/0x180 [cfg80211]
   [<ffffffffc06e36dd>] cfg80211_wext_siwessid+0x1d/0x40 [cfg80211]
   [<ffffffff81584d0c>] ioctl_standard_iw_point+0x14c/0x3e0
   [<ffffffff8158502a>] ioctl_standard_call+0x8a/0xd0
   [<ffffffff81584b76>] wireless_process_ioctl.constprop.10+0xb6/0x100
   [<ffffffff8158521d>] wext_handle_ioctl+0x5d/0xb0
   [<ffffffff814cfb29>] dev_ioctl+0x329/0x620
   [<ffffffff8149c7f2>] sock_ioctl+0x142/0x2e0
   [<ffffffff811b0140>] do_vfs_ioctl+0x300/0x520
   [<ffffffff811b03e1>] SyS_ioctl+0x81/0xa0
   [<ffffffff815a67d6>] system_call_fastpath+0x1a/0x1f
 irq event stamp: 493416
 hardirqs last  enabled at (493416): [<ffffffff81068a5f>] __cancel_work_timer+0x6f/0x100
 hardirqs last disabled at (493415): [<ffffffff81067e9f>] try_to_grab_pending+0x1f/0x160
 softirqs last  enabled at (493408): [<ffffffff81053ced>] _local_bh_enable+0x1d/0x50
 softirqs last disabled at (493409): [<ffffffff81054c75>] irq_exit+0xa5/0xb0

 other info that might help us debug this:
  Possible unsafe locking scenario:

        CPU0
        ----
   lock((&(&led_cdev->blink_work)->work));
   <Interrupt>
     lock((&(&led_cdev->blink_work)->work));

  *** DEADLOCK ***

 2 locks held by swapper/0/0:
  #0:  (((&tpt_trig->timer))){+.-...}, at: [<ffffffff810b4c50>] call_timer_fn+0x0/0x180
  #1:  (&trig->leddev_list_lock){.+.?..}, at: [<ffffffffc081e68c>] tpt_trig_timer+0xec/0x170 [mac80211]

 stack backtrace:
 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.17.0-rc3 #1
 Hardware name: LENOVO 7470BN2/7470BN2, BIOS 6DET38WW (2.02 ) 12/19/2008
  ffffffff8246eb30 ffff88007c203b00 ffffffff8159e97f ffffffff81a194c0
  ffff88007c203b50 ffffffff81599c29 0000000000000001 ffffffff00000001
  ffff880000000000 0000000000000006 ffffffff81a194c0 ffffffff81093ad0
 Call Trace:
  <IRQ>  [<ffffffff8159e97f>] dump_stack+0x4d/0x66
  [<ffffffff81599c29>] print_usage_bug+0x1f4/0x205
  [<ffffffff81093ad0>] ? check_usage_backwards+0x140/0x140
  [<ffffffff810944d3>] mark_lock+0x223/0x2b0
  [<ffffffff81094d60>] __lock_acquire+0x2b0/0x1a30
  [<ffffffff81096c81>] lock_acquire+0x91/0x110
  [<ffffffff810685d0>] ? mod_delayed_work_on+0x80/0x80
  [<ffffffffc081e5a0>] ? __ieee80211_get_rx_led_name+0x10/0x10 [mac80211]
  [<ffffffff81068608>] flush_work+0x38/0x270
  [<ffffffff810685d0>] ? mod_delayed_work_on+0x80/0x80
  [<ffffffff810945ca>] ? mark_held_locks+0x6a/0x90
  [<ffffffff81068a5f>] ? __cancel_work_timer+0x6f/0x100
  [<ffffffffc081e5a0>] ? __ieee80211_get_rx_led_name+0x10/0x10 [mac80211]
  [<ffffffff8109469d>] ? trace_hardirqs_on_caller+0xad/0x1c0
  [<ffffffffc081e5a0>] ? __ieee80211_get_rx_led_name+0x10/0x10 [mac80211]
  [<ffffffff81068a6b>] __cancel_work_timer+0x7b/0x100
  [<ffffffff81068b0e>] cancel_delayed_work_sync+0xe/0x10
  [<ffffffff8147cf3b>] led_blink_set+0x1b/0x40
  [<ffffffffc081e6b0>] tpt_trig_timer+0x110/0x170 [mac80211]
  [<ffffffff810b4cc5>] call_timer_fn+0x75/0x180
  [<ffffffff810b4c50>] ? process_timeout+0x10/0x10
  [<ffffffffc081e5a0>] ? __ieee80211_get_rx_led_name+0x10/0x10 [mac80211]
  [<ffffffff810b50ac>] run_timer_softirq+0x1fc/0x2f0
  [<ffffffff81054805>] __do_softirq+0x115/0x2e0
  [<ffffffff81054c75>] irq_exit+0xa5/0xb0
  [<ffffffff810049b3>] do_IRQ+0x53/0xf0
  [<ffffffff815a74af>] common_interrupt+0x6f/0x6f
  <EOI>  [<ffffffff8147b56e>] ? cpuidle_enter_state+0x6e/0x180
  [<ffffffff8147b732>] cpuidle_enter+0x12/0x20
  [<ffffffff8108bba0>] cpu_startup_entry+0x330/0x360
  [<ffffffff8158fb51>] rest_init+0xc1/0xd0
  [<ffffffff8158fa90>] ? csum_partial_copy_generic+0x170/0x170
  [<ffffffff81af3ff2>] start_kernel+0x44f/0x45a
  [<ffffffff81af399c>] ? set_init_arg+0x53/0x53
  [<ffffffff81af35ad>] x86_64_start_reservations+0x2a/0x2c
  [<ffffffff81af36a0>] x86_64_start_kernel+0xf1/0xf4

Cc: Vincent Donnefort <vdonnefort@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
2014-09-02 10:02:13 -07:00
Linus Walleij 0dbc8b7afe gpio: move varargs hack outside #ifdef GPIOLIB
commit 39b2bbe3d7
"gpio: add flags argument to gpiod_get*() functions"
added a dynamic flags argument to all the GPIOD getter
functions, however this did not cover the stubs so
when people used gpiod stubs to compile out descriptor
code, compilation failed.

Solve this by:
- Also rename all the stub functions __gpiod_*
- Moving the vararg hack outside of #ifdef CONFIG_GPIOLIB
  so these will always be available.

Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-09-02 10:09:43 +02:00
David S. Miller 377655fe6b Merge tag 'master-2014-08-25' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville says:

====================
pull request: wireless 2014-08-28

Please pull this batch of fixes intended for the 3.17 stream.

For the Bluetooth/6LowPAN/802.15.4 bits, Johan says:

'It contains a connection reference counting fix for LE where a
connection might stay up even though it should get disconnected.

The other 802.15.4 6LoWPAN related patches were sent to the bluetooth
tree by Alexander Aring and described as follows by him:

"
these patches contains patches for the bluetooth branch.

This series includes memory leak fixes and an errno value fix.
Also there are two patches for sending and receiving 1280 6LoWPAN
packets, which makes the IEEE 802.15.4 6LoWPAN stack more RFC
compliant.
"'

Along with that...

Alexey Khoroshilov fixes a use-after-free bug on at76c50x-usb.

Hauke Mehrtens adds a PCI ID to bcma.

Himangi Saraogi fixes a silly "A || A" test in rtlwifi.

Larry Finger adds a device ID to rtl8192cu.

Maks Naumov fixes a strncmp argument in ath9k.

Álvaro Fernández Rojas adds a PCI ID to ssb.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-01 18:08:11 -07:00
Linus Torvalds 19ed3eb975 ARM: SoC fixes for 3.17-rc
Here's the weekly batch of fixes from arm-soc.
 
 The delta is a largeish negative delta, due to revert of SMP support for Broadcom's
 STB SoC -- it was accidentally merged before some issues had been addressed, so they
 will make a new attempt for 3.18. I didn't see a need for a full revert of the whole
 platform due to this, we're keeping the rest enabled.
 
 The rest is mostly:
 
 * A handful of DT fixes for i.MX (Hummingboard/Cubox-i in particular)
 * Some MTD/NAND fixes for OMAP
 * Minor DT fixes for shmobile
 * Warning fix for UP builds on vexpress/spc
 
 There's also a couple of patches that wires up hwmod on TI's DRA7 SoC
 so it can boot. Drivers and the rest had landed for 3.17, and it's small
 and isolated so it made sense to pick up now even if it's not a bugfix.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "Here's the weekly batch of fixes from arm-soc.

  The delta is a largeish negative delta, due to revert of SMP support
  for Broadcom's STB SoC -- it was accidentally merged before some
  issues had been addressed, so they will make a new attempt for 3.18.
  I didn't see a need for a full revert of the whole platform due to
  this, we're keeping the rest enabled.

  The rest is mostly:

   - a handful of DT fixes for i.MX (Hummingboard/Cubox-i in particular)
   - some MTD/NAND fixes for OMAP
   - minor DT fixes for shmobile
   - warning fix for UP builds on vexpress/spc

  There's also a couple of patches that wires up hwmod on TI's DRA7 SoC
  so it can boot.  Drivers and the rest had landed for 3.17, and it's
  small and isolated so it made sense to pick up now even if it's not a
  bugfix"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (23 commits)
  vexpress/spc: fix a build warning on array bounds
  ARM: DRA7: hwmod: Add dra74x and dra72x specific ocp interface lists
  ARM: DRA7: Add support for soc_is_dra74x() and soc_is_dra72x() variants
  MAINTAINERS: catch special Rockchip code locations
  ARM: dts: microsom-ar8035: MDIO pad must be set open drain
  ARM: dts: omap54xx-clocks: Fix the l3 and l4 clock rates
  ARM: brcmstb: revert SMP support
  ARM: OMAP2+: hwmod: Rearm wake-up interrupts for DT when MUSB is idled
  ARM: dts: Enable UART wake-up events for beagleboard
  ARM: dts: Remove twl6030 clk32g "regulator"
  ARM: OMAP2+: omap_device: remove warning that clk alias already exists
  ARM: OMAP: fix %d confusingly prefixed with 0x in format string
  ARM: dts: DRA7: fix interrupt-cells for GPIO
  mtd: nand: omap: Fix 1-bit Hamming code scheme, omap_calculate_ecc()
  ARM: dts: omap3430-sdp: Revert to using software ECC for NAND
  ARM: OMAP2+: GPMC: Support Software ECC scheme via DT
  mtd: nand: omap: Revert to using software ECC by default
  ARM: dts: hummingboard/cubox-i: change SPDIF output to be more descriptive
  ARM: dts: hummingboard/cubox-i: add USB OC pinctrl configuration
  ARM: shmobile: r8a7791: add missing 0x0100 for SDCKCR
  ...
2014-08-31 17:01:19 -07:00
Linus Torvalds 81bbadc637 spi: Bug fixes for v3.17
A smattering of bug fixes for the SPI subsystem, all in driver code
 which has seen active work recently and none of them with any great
 global impact.
 
 There's also a new ACPI ID for the pxa2xx driver which required no code
 changes and the addition of kerneldoc for some structure fields that
 were missing it and generating warnings during documentation builds as a
 result.
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Merge tag 'spi-v3.17-rc3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi bugfixes from Mark Brown:
 "A smattering of bug fixes for the SPI subsystem, all in driver code
  which has seen active work recently and none of them with any great
  global impact.

  There's also a new ACPI ID for the pxa2xx driver which required no
  code changes and the addition of kerneldoc for some structure fields
  that were missing it and generating warnings during documentation
  builds as a result"

* tag 'spi-v3.17-rc3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: sh-msiof: Fix transmit-only DMA transfers
  spi/rockchip: Avoid accidentally turning off the clock
  spi: dw: fix kernel crash due to NULL pointer dereference
  spi: dw-pci: fix bug when regs left uninitialized
  spi: davinci: fix SPI_NO_CS functionality
  spi/rockchip: fixup incorrect dma direction setting
  spi/pxa2xx: Add ACPI ID for Intel Braswell
  spi: spi-au1550: fix build failure
  spi: rspi: Fix leaking of unused DMA descriptors
  spi: sh-msiof: Fix leaking of unused DMA descriptors
  spi: Add missing kerneldoc bits
  spi/omap-mcspi: Fix the spi task hangs waiting dma_rx
2014-08-31 10:09:07 -07:00
Mark Brown 360b2eaeb5 Merge remote-tracking branches 'spi/fix/au1550', 'spi/fix/davinci', 'spi/fix/doc', 'spi/fix/dw', 'spi/fix/omap-mcspi', 'spi/fix/pxa2xx', 'spi/fix/rockchip' and 'spi/fix/rspi' into spi-linus 2014-08-30 19:28:04 +01:00
Daniel Borkmann 38ab1fa981 net: sctp: fix ABI mismatch through sctp_assoc_to_state helper
Since SCTP day 1, that is, 19b55a2af145 ("Initial commit") from lksctp
tree, the official <netinet/sctp.h> header carries a copy of enum
sctp_sstat_state that looks like (compared to the current in-kernel
enumeration):

  User definition:                     Kernel definition:

  enum sctp_sstat_state {              typedef enum {
    SCTP_EMPTY             = 0,          <removed>
    SCTP_CLOSED            = 1,          SCTP_STATE_CLOSED            = 0,
    SCTP_COOKIE_WAIT       = 2,          SCTP_STATE_COOKIE_WAIT       = 1,
    SCTP_COOKIE_ECHOED     = 3,          SCTP_STATE_COOKIE_ECHOED     = 2,
    SCTP_ESTABLISHED       = 4,          SCTP_STATE_ESTABLISHED       = 3,
    SCTP_SHUTDOWN_PENDING  = 5,          SCTP_STATE_SHUTDOWN_PENDING  = 4,
    SCTP_SHUTDOWN_SENT     = 6,          SCTP_STATE_SHUTDOWN_SENT     = 5,
    SCTP_SHUTDOWN_RECEIVED = 7,          SCTP_STATE_SHUTDOWN_RECEIVED = 6,
    SCTP_SHUTDOWN_ACK_SENT = 8,          SCTP_STATE_SHUTDOWN_ACK_SENT = 7,
  };                                   } sctp_state_t;

This header was later on also placed into the uapi, so that user space
programs can compile without having <netinet/sctp.h>, but the shipped
with <linux/sctp.h> instead.

While RFC6458 under 8.2.1.Association Status (SCTP_STATUS) says that
sstat_state can range from SCTP_CLOSED to SCTP_SHUTDOWN_ACK_SENT, we
nevertheless have a what it appears to be dummy SCTP_EMPTY state from
the very early days.

While it seems to do just nothing, commit 0b8f9e25b0 ("sctp: remove
completely unsed EMPTY state") did the right thing and removed this dead
code. That however, causes an off-by-one when the user asks the SCTP
stack via SCTP_STATUS API and checks for the current socket state thus
yielding possibly undefined behaviour in applications as they expect
the kernel to tell the right thing.

The enumeration had to be changed however as based on the current socket
state, we access a function pointer lookup-table through this. Therefore,
I think the best way to deal with this is just to add a helper function
sctp_assoc_to_state() to encapsulate the off-by-one quirk.

Reported-by: Tristan Su <sooqing@gmail.com>
Fixes: 0b8f9e25b0 ("sctp: remove completely unsed EMPTY state")
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-29 20:31:08 -07:00
Or Gerlitz b95089d00c net/mlx4: Move the tunnel steering helper function to mlx4_core
Move the function which we use to set VXLAN DMFS (flow-steering) rules
from mlx4_en to mlx4_core. This refactoring will allow the mlx4_ib driver
to call the helper for the use case of user-space RAW Ethernet QPs, such
that they can serve VXLAN traffic too.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-29 20:13:00 -07:00
Linus Torvalds 10f3291a1d Merge branch 'akpm' (fixes from Andrew Morton)
Merge patches from Andrew Morton:
 "22 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (22 commits)
  kexec: purgatory: add clean-up for purgatory directory
  Documentation/kdump/kdump.txt: add ARM description
  flush_icache_range: export symbol to fix build errors
  tools: selftests: fix build issue with make kselftests target
  ocfs2: quorum: add a log for node not fenced
  ocfs2: o2net: set tcp user timeout to max value
  ocfs2: o2net: don't shutdown connection when idle timeout
  ocfs2: do not write error flag to user structure we cannot copy from/to
  x86/purgatory: use approprate -m64/-32 build flag for arch/x86/purgatory
  drivers/rtc/rtc-s5m.c: re-add support for devices without irq specified
  xattr: fix check for simultaneous glibc header inclusion
  kexec: remove CONFIG_KEXEC dependency on crypto
  kexec: create a new config option CONFIG_KEXEC_FILE for new syscall
  x86,mm: fix pte_special versus pte_numa
  hugetlb_cgroup: use lockdep_assert_held rather than spin_is_locked
  mm/zpool: use prefixed module loading
  zram: fix incorrect stat with failed_reads
  lib: turn CONFIG_STACKTRACE into an actual option.
  mm: actually clear pmd_numa before invalidating
  memblock, memhotplug: fix wrong type in memblock_find_in_range_node().
  ...
2014-08-29 16:28:29 -07:00
Filipe Brandenburger bfcfd44cce xattr: fix check for simultaneous glibc header inclusion
The guard was introduced in commit ea1a8217b0 ("xattr: guard against
simultaneous glibc header inclusion") but it is using #ifdef to check
for a define that is either set to 1 or 0.  Fix it to use #if instead.

* Without this patch:

  $ { echo "#include <sys/xattr.h>"; echo "#include <linux/xattr.h>"; } | gcc -E -Iinclude/uapi - >/dev/null
  include/uapi/linux/xattr.h:19:0: warning: "XATTR_CREATE" redefined [enabled by default]
   #define XATTR_CREATE 0x1 /* set value, fail if attr already exists */
   ^
  /usr/include/x86_64-linux-gnu/sys/xattr.h:32:0: note: this is the location of the previous definition
   #define XATTR_CREATE XATTR_CREATE
   ^

* With this patch:

  $ { echo "#include <sys/xattr.h>"; echo "#include <linux/xattr.h>"; } | gcc -E -Iinclude/uapi - >/dev/null
  (no warnings)

Signed-off-by: Filipe Brandenburger <filbranden@google.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
Cc: Allan McRae <allan@archlinux.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-29 16:28:16 -07:00
Linus Torvalds 848298c6fb USB fixes for 3.17-rc3
Here are a bunch of fixes for the USB drivers for 3.17-rc3.
 
 Also in here is the movement of the usbip driver out of staging, into
 the "real" part of the kernel, it had to wait until after -rc1 to handle
 the merge issues involved between the USB and staging trees.  The code
 is identical, just file movements there.
 
 The USB fixes are all over the place, new device ids, xhci fixes for
 reported issues and the usual gadget driver fixes as well.  All have
 been in linux-next for a while now.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a bunch of fixes for the USB drivers for 3.17-rc3.

  Also in here is the movement of the usbip driver out of staging, into
  the "real" part of the kernel, it had to wait until after -rc1 to
  handle the merge issues involved between the USB and staging trees.
  The code is identical, just file movements there.

  The USB fixes are all over the place, new device ids, xhci fixes for
  reported issues and the usual gadget driver fixes as well.  All have
  been in linux-next for a while now"

* tag 'usb-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (46 commits)
  USB: fix build error with CONFIG_PM_RUNTIME disabled
  Revert "usb: ehci/ohci-exynos: Fix PHY getting sequence"
  xhci: Disable streams on Via XHCI with device-id 0x3432
  USB: serial: fix potential heap buffer overflow
  USB: serial: fix potential stack buffer overflow
  usb: ehci/ohci-exynos: Fix PHY getting sequence
  usb: hub: Prevent hub autosuspend if usbcore.autosuspend is -1
  USB: sisusb: add device id for Magic Control USB video
  usb: dwc2: gadget: Set the default EP max packet value as 8 bytes
  usb: ehci: using wIndex + 1 for hub port
  USB: storage: add quirk for Newer Technology uSCSI SCSI-USB converter
  MAINTAINERS: Add an entry for USB/IP driver
  usbip: remove struct usb_device_id table
  usbip: move usbip kernel code out of staging
  usbip: move usbip userspace code out of staging
  USB: whiteheat: Added bounds checking for bulk command response
  usb: gadget: remove $(PWD) in ccflags-y
  usb: pch_udc: usb gadget device support for Intel Quark X1000
  usb: gadget: uvc: fix possible lockup in uvc gadget
  usb: wusbcore: fix below build warning
  ...
2014-08-29 12:10:03 -07:00
Linus Torvalds d4f03186c8 Ext4 bug fixes for 3.17, to provide better handling of memory
allocation failures, and to fix some journaling bugs involving journal
 checksums and FALLOC_FL_ZERO_RANGE.
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 bugfixes from Ted Ts'o:
 "Ext4 bug fixes for 3.17, to provide better handling of memory
  allocation failures, and to fix some journaling bugs involving
  journal checksums and FALLOC_FL_ZERO_RANGE"

* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix same-dir rename when inline data directory overflows
  jbd2: fix descriptor block size handling errors with journal_csum
  jbd2: fix infinite loop when recovering corrupt journal blocks
  ext4: update i_disksize coherently with block allocation on error path
  ext4: fix transaction issues for ext4_fallocate and ext_zero_range
  ext4: fix incorect journal credits reservation in ext4_zero_range
  ext4: move i_size,i_disksize update routines to helper function
  ext4: fix BUG_ON in mb_free_blocks()
  ext4: propagate errors up to ext4_find_entry()'s callers
2014-08-29 11:52:46 -07:00
Linus Torvalds 522a15db95 Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block layer fixes from Jens Axboe:
 "A smaller collection of fixes that have come up since the initial
  merge window pull request.  This contains:

   - error handling cleanup and support for larger than 16 byte cdbs in
     sg_io() from Christoph.  The latter just matches what bsg and
     friends support, sg_io() got left out in the merge.

   - an option for brd to expose partitions in /proc/partitions.  They
     are hidden by default for compat reasons.  From Dmitry Monakhov.

   - a few blk-mq fixes from me - killing a dead/unused flag, fix for
     merging happening even if turned off, and correction of a few
     comments.

   - removal of unnecessary ->owner setting in systemace.  From Michal
     Simek.

   - two related fixes for a problem with nesting freezing of queues in
     blk-mq.  One from Ming Lei removing an unecessary freeze operation,
     and another from Tejun fixing the nesting regression introduced in
     the merge window.

   - fix for a BUG_ON() at bio_endio time when protection info is
     attached and the IO has an error.  From Sagi Grimberg.

   - two scsi_ioctl bug fixes for regressions with scsi-mq from Tony
     Battersby.

   - a cfq weight update fix and subsequent comment update from Toshiaki
     Makita"

* 'for-linus' of git://git.kernel.dk/linux-block:
  cfq-iosched: Add comments on update timing of weight
  cfq-iosched: Fix wrong children_weight calculation
  block: fix error handling in sg_io
  fix regression in SCSI_IOCTL_SEND_COMMAND
  scsi-mq: fix requests that use a separate CDB buffer
  block: support > 16 byte CDBs for SG_IO
  block: cleanup error handling in sg_io
  brd: add ram disk visibility option
  block: systemace: Remove .owner field for driver
  blk-mq: blk_mq_freeze_queue() should allow nesting
  blk-mq: correct a few wrong/bad comments
  block: Fix BUG_ON when pi errors occur
  blk-mq: don't allow merges if turned off for the queue
  blk-mq: get rid of unused BLK_MQ_F_SHOULD_SORT flag
  blk-mq: fix WARNING "percpu_ref_kill() called more than once!"
2014-08-29 11:21:49 -07:00
Darrick J. Wong db9ee22036 jbd2: fix descriptor block size handling errors with journal_csum
It turns out that there are some serious problems with the on-disk
format of journal checksum v2.  The foremost is that the function to
calculate descriptor tag size returns sizes that are too big.  This
causes alignment issues on some architectures and is compounded by the
fact that some parts of jbd2 use the structure size (incorrectly) to
determine the presence of a 64bit journal instead of checking the
feature flags.

Therefore, introduce journal checksum v3, which enlarges the
descriptor block tag format to allow for full 32-bit checksums of
journal blocks, fix the journal tag function to return the correct
sizes, and fix the jbd2 recovery code to use feature flags to
determine 64bitness.

Add a few function helpers so we don't have to open-code quite so
many pieces.

Switching to a 16-byte block size was found to increase journal size
overhead by a maximum of 0.1%, to convert a 32-bit journal with no
checksumming to a 32-bit journal with checksum v3 enabled.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reported-by: TR Reardon <thomas_reardon@hotmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
2014-08-28 22:22:29 -04:00
Randy Dunlap a8dbfeedfe regulator: fix kernel-doc warnings in header files
Fix kernel-doc warnings in regulator header files:

Warning(..//include/linux/regulator/machine.h:140): No description found for parameter 'ramp_disable'
Warning(..//include/linux/regulator/driver.h:279): No description found for parameter 'linear_ranges'
Warning(..//include/linux/regulator/driver.h:279): No description found for parameter 'n_linear_ranges'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-28 09:59:42 +01:00
Thierry Reding 1f58d9465c dma-buf/fence: Fix one more kerneldoc warning
The seqno_fence_init() function's cond argument isn't described in the
kerneldoc comment. Fix that to silence a warning when building DocBook
documentation.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
2014-08-28 11:59:38 +05:30
Roger Quadros 7d5929c1f3 mtd: nand: omap: Revert to using software ECC by default
For v3.12 and prior, 1-bit Hamming code ECC via software was the
default choice. Commit c66d039197 in v3.13 changed the behaviour
to use 1-bit Hamming code via Hardware using a different ECC layout
i.e. (ROM code layout) than what is used by software ECC.

This ECC layout change causes NAND filesystems created in v3.12
and prior to be unusable in v3.13 and later. So revert back to
using software ECC by default if an ECC scheme is not explicitely
specified.

This defect can be observed on the following boards during legacy boot

-omap3beagle
-omap3touchbook
-overo
-am3517crane
-devkit8000
-ldp
-3430sdp

Signed-off-by: Roger Quadros <rogerq@ti.com>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2014-08-25 16:15:32 -07:00
Linus Torvalds f01bfc977e NFS client fixes for 3.17
Highlights:
 
 - More fixes for read/write codepath regressions
   - Sleeping while holding the inode lock
   - Stricter enforcement of page contiguity when coalescing requests
   - Fix up error handling in the page coalescing code
 - Don't busy wait on SIGKILL in the file locking code
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Merge tag 'nfs-for-3.17-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client fixes from Trond Myklebust:
 "Highlights:

   - more fixes for read/write codepath regressions
     * sleeping while holding the inode lock
     * stricter enforcement of page contiguity when coalescing requests
     * fix up error handling in the page coalescing code

   - don't busy wait on SIGKILL in the file locking code"

* tag 'nfs-for-3.17-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  nfs: Don't busy-wait on SIGKILL in __nfs_iocounter_wait
  nfs: can_coalesce_requests must enforce contiguity
  nfs: disallow duplicate pages in pgio page vectors
  nfs: don't sleep with inode lock in lock_and_join_requests
  nfs: fix error handling in lock_and_join_requests
  nfs: use blocking page_group_lock in add_request
  nfs: fix nonblocking calls to nfs_page_group_lock
  nfs: change nfs_page_group_lock argument
2014-08-25 15:34:28 -07:00
Linus Torvalds 01e9982ab3 The rewrite of the ftrace code that makes it possible to allow for
separate trampolines had a design flaw with the interaction between
 the function and function_graph tracers.
 
 The main flaw was the simplification of the use of multiple tracers having
 the same filter (like function and function_graph, that use the
 set_ftrace_filter file to filter their code). The design assumed that the
 two tracers could never run simultaneously as only one tracer can be
 used at a time. The problem with this assumption was that the function
 profiler could be implemented on top of the function graph tracer, and
 the function profiler could run at the same time as the function tracer.
 This caused the assumption to be broken and when ftrace detected this
 failed assumpiton it would spit out a nasty warning and shut itself down.
 
 Instead of using a single ftrace_ops that switches between the function
 and function_graph callbacks, the two tracers can again use their own
 ftrace_ops. But instead of having a complex hierarchy of ftrace_ops,
 the filter fields are placed in its own structure and the ftrace_ops
 can carefully use the same filter. This change took a bit to be able
 to allow for this and currently only the global_ops can share the same
 filter, but this new design can easily be modified to allow for any
 ftrace_ops to share its filter with another ftrace_ops.
 
 The first four patches deal with the change of allowing the ftrace_ops
 to share the filter (and this needs to go to 3.16 as well).
 
 The fifth patch fixes a bug that was also caused by the new changes
 but only for archs other than x86, and only if those archs implement
 a direct call to the function_graph tracer which they do not do yet
 but will in the future. It does not need to go to stable, but needs
 to be fixed before the other archs update their code to allow direct
 calls to the function_graph trampoline.
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Merge tag 'trace-fixes-v3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull fix for ftrace function tracer/profiler conflict from Steven Rostedt:
 "The rewrite of the ftrace code that makes it possible to allow for
  separate trampolines had a design flaw with the interaction between
  the function and function_graph tracers.

  The main flaw was the simplification of the use of multiple tracers
  having the same filter (like function and function_graph, that use the
  set_ftrace_filter file to filter their code).  The design assumed that
  the two tracers could never run simultaneously as only one tracer can
  be used at a time.  The problem with this assumption was that the
  function profiler could be implemented on top of the function graph
  tracer, and the function profiler could run at the same time as the
  function tracer.  This caused the assumption to be broken and when
  ftrace detected this failed assumpiton it would spit out a nasty
  warning and shut itself down.

  Instead of using a single ftrace_ops that switches between the
  function and function_graph callbacks, the two tracers can again use
  their own ftrace_ops.  But instead of having a complex hierarchy of
  ftrace_ops, the filter fields are placed in its own structure and the
  ftrace_ops can carefully use the same filter.  This change took a bit
  to be able to allow for this and currently only the global_ops can
  share the same filter, but this new design can easily be modified to
  allow for any ftrace_ops to share its filter with another ftrace_ops.

  The first four patches deal with the change of allowing the ftrace_ops
  to share the filter (and this needs to go to 3.16 as well).

  The fifth patch fixes a bug that was also caused by the new changes
  but only for archs other than x86, and only if those archs implement a
  direct call to the function_graph tracer which they do not do yet but
  will in the future.  It does not need to go to stable, but needs to be
  fixed before the other archs update their code to allow direct calls
  to the function_graph trampoline"

* tag 'trace-fixes-v3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace: Use current addr when converting to nop in __ftrace_replace_code()
  ftrace: Fix function_profiler and function tracer together
  ftrace: Fix up trampoline accounting with looping on hash ops
  ftrace: Update all ftrace_ops for a ftrace_hash_ops update
  ftrace: Allow ftrace_ops to use the hashes from other ops
2014-08-25 15:11:53 -07:00