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12 years agomutex: Place lock in contended state after fastpath_lock failure
Will Deacon [Fri, 10 Aug 2012 14:22:09 +0000 (15:22 +0100)]
mutex: Place lock in contended state after fastpath_lock failure

ARM recently moved to asm-generic/mutex-xchg.h for its mutex
implementation after the previous implementation was found to be missing
some crucial memory barriers. However, this has revealed some problems
running hackbench on SMP platforms due to the way in which the
MUTEX_SPIN_ON_OWNER code operates.

The symptoms are that a bunch of hackbench tasks are left waiting on an
unlocked mutex and therefore never get woken up to claim it. This boils
down to the following sequence of events:

        Task A        Task B        Task C        Lock value
0                                                     1
1       lock()                                        0
2                     lock()                          0
3                     spin(A)                         0
4       unlock()                                      1
5                                   lock()            0
6                     cmpxchg(1,0)                    0
7                     contended()                    -1
8       lock()                                        0
9       spin(C)                                       0
10                                  unlock()          1
11      cmpxchg(1,0)                                  0
12      unlock()                                      1

At this point, the lock is unlocked, but Task B is in an uninterruptible
sleep with nobody to wake it up.

This patch fixes the problem by ensuring we put the lock into the
contended state if we fail to acquire it on the fastpath, ensuring that
any blocked waiters are woken up when the mutex is released.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Chris Mason <chris.mason@fusionio.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: <stable@vger.kernel.org>
Reviewed-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-6e9lrw2avczr0617fzl5vqb8@git.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
12 years agoMerge branch 'fixes-for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/coolone...
Linus Torvalds [Mon, 13 Aug 2012 06:59:04 +0000 (09:59 +0300)]
Merge branch 'fixes-for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds

Pull leds fixes/revert from Bryan Wu.

* 'fixes-for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
  leds: renesas: fix error handling
  Revert "leds: use led_set_brightness in led_trigger_event"
  leds: lp8788: Fix updating scale configuration bits

12 years agoleds: renesas: fix error handling
Arnd Bergmann [Wed, 8 Aug 2012 21:27:58 +0000 (05:27 +0800)]
leds: renesas: fix error handling

bfe4c041 "leds: convert Renesas TPU LED driver to devm_kzalloc() and
cleanup error exit path" introduced a possible case in which r_tpu_probe
calls iounmap on a wild pointer. This changes the one case that was
missed in the same way as the other error paths.

Without this patch, building kota2_defconfig results in:

drivers/leds/leds-renesas-tpu.c: In function 'r_tpu_probe':
drivers/leds/leds-renesas-tpu.c:246:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
drivers/leds/leds-renesas-tpu.c:308:17: warning: 'p' may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Magnus Damm <damm@opensource.se>
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
12 years agoRevert "leds: use led_set_brightness in led_trigger_event"
Fabio Baltieri [Mon, 13 Aug 2012 06:27:24 +0000 (14:27 +0800)]
Revert "leds: use led_set_brightness in led_trigger_event"

This reverts commit a0193cbee0809d65362a0767b2d50306b145b2f5.

The problem with the original commit was that it caused a warning with
the MMC trigger calling del_timer_sync from hard-irq context.

Signed-off-by: Fabio Baltieri <fabio.baltieri@gmail.com>
Reported-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Mon, 13 Aug 2012 06:18:19 +0000 (09:18 +0300)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Pull networking changes from David Miller:
 "Most importantly this should cure the ipv4-mapped ipv6 socket TCP
  crashes some people were seeing, otherwise:

   1) Fix e1000e autonegotiation handling regression, from Tushar Dave.

   2) Fix TX data corruption race on e1000e down, also from Tushar Dave.

   3) Fix bfin_sir IRDA driver build, from Sonic Zhang.

   4) AF_PACKET mmap() tests a flag in the TX ring shared between
      userspace and the kernel for an internal consistency check.  It
      really shouldn't do this to validate the kernel's own behavior
      because the user can corrupt it to be any value at all.  From
      Daniel Borkmann.

   5) Fix TCP metrics leak on netns dismantle, from Eric Dumazet.

   6) Orphan the anonymous TCP socket from the SKB in
      ip_send_unicast_reply() so that the rest of the stack needn't see
      it.  Otherwise we get selinux problems of all sorts, from Eric
      Dumazet.

      This is the best way to fix this since the socket is just a place
      holder for sending packets in a context where we have no real
      socket at all.

   7) Fix TUN detach crashes, from Stanislav Kinsbursky.

   8) dev_set_alias() leaks memory on krealloc() failure, from Alexey
      Khoroshilov.

   9) FIB trie must use call_rcu() not call_rcu_bh(), because this code
      is not universally invoked from software interrupts.  From Eric
      Dumazet.

  10) PPTP looks up ipv4 routes with the wrong network namespace, fix
      from Gao Feng."

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (33 commits)
  bnx2x: Fix compiler warnings
  af_packet: remove BUG statement in tpacket_destruct_skb
  macvtap: rcu_dereference outside read-lock section
  codel: refine one condition to avoid a nul rec_inv_sqrt
  ixgbe: add missing braces
  ipv4: fix ip_send_skb()
  net: tcp: ipv6_mapped needs sk_rx_dst_set method
  ipv4: tcp: unicast_sock should not land outside of TCP stack
  bnx2x: Fix recovery flow cleanup during probe
  bnx2x: fix unload previous driver flow when flr-capable
  tun: don't zeroize sock->file on detach
  igb: Fix register defines for all non-82575 hardware
  e1000e: fix panic while dumping packets on Tx hang with IOMMU
  igb: fix panic while dumping packets on Tx hang with IOMMU
  tcp: must free metrics at net dismantle
  net/stmmac: mark probe function as __devinit
  lpc_eth: remove obsolete ifdefs
  net/core: Fix potential memory leak in dev_set_alias()
  cdc-phonet: Don't leak in usbpn_open
  batman-adv: Fix mem leak in the batadv_tt_local_event() function
  ...

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target...
Linus Torvalds [Mon, 13 Aug 2012 05:40:51 +0000 (08:40 +0300)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

Pull tcm_vhost level target fabric driver from Nicholas Bellinger:
 "Here is the PULL request for the initial merge of tcm_vhost based on
  RFC-v5 code with MST's ACK appended to the initial merge commit."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  tcm_vhost: Initial merge for vhost level target fabric driver

12 years agobnx2x: Fix compiler warnings
Joren Van Onder [Sat, 11 Aug 2012 17:10:35 +0000 (17:10 +0000)]
bnx2x: Fix compiler warnings

Fix the following compiler warnings:

 - drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:2908:3: warning: comparison
   of distinct pointer types lacks a cast [enabled by default]
 - drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c:1709:7: warning: comparison
   of distinct pointer types lacks a cast [enabled by default]

Signed-off-by: Joren Van Onder <joren.vanonder@gmail.com>
Acked-By: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoaf_packet: remove BUG statement in tpacket_destruct_skb
danborkmann@iogearbox.net [Fri, 10 Aug 2012 22:48:54 +0000 (22:48 +0000)]
af_packet: remove BUG statement in tpacket_destruct_skb

Here's a quote of the comment about the BUG macro from asm-generic/bug.h:

 Don't use BUG() or BUG_ON() unless there's really no way out; one
 example might be detecting data structure corruption in the middle
 of an operation that can't be backed out of.  If the (sub)system
 can somehow continue operating, perhaps with reduced functionality,
 it's probably not BUG-worthy.

 If you're tempted to BUG(), think again:  is completely giving up
 really the *only* solution?  There are usually better options, where
 users don't need to reboot ASAP and can mostly shut down cleanly.

In our case, the status flag of a ring buffer slot is managed from both sides,
the kernel space and the user space. This means that even though the kernel
side might work as expected, the user space screws up and changes this flag
right between the send(2) is triggered when the flag is changed to
TP_STATUS_SENDING and a given skb is destructed after some time. Then, this
will hit the BUG macro. As David suggested, the best solution is to simply
remove this statement since it cannot be used for kernel side internal
consistency checks. I've tested it and the system still behaves /stable/ in
this case, so in accordance with the above comment, we should rather remove it.

Signed-off-by: Daniel Borkmann <daniel.borkmann@tik.ee.ethz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agomacvtap: rcu_dereference outside read-lock section
Denis Efremov [Sat, 11 Aug 2012 20:26:31 +0000 (20:26 +0000)]
macvtap: rcu_dereference outside read-lock section

rcu_dereference occurs in update section. Replacement by
rcu_dereference_protected in order to prevent lockdep
complaint.

Found by Linux Driver Verification project (linuxtesting.org)

Signed-off-by: Denis Efremov <yefremov.denis@gmail.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge tag 'gpio-fixes-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 12 Aug 2012 18:45:33 +0000 (21:45 +0300)]
Merge tag 'gpio-fixes-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull gpio fixes from Linus Walleij:
 - Fix a resource leak in the SCH driver
 - Fix the register address calculation in the MSIC driver
 - Fix the PXA driver's devicetree functions
 - Delete redundant shadow variable leftovers in the MXC driver
 - Specify the GPIO base for the device tree probe in the MXC driver
 - Add a modalias for the i.MX driver
 - Fix off-by-one bug in the Samsung driver
 - Fix erroneous errorpath in the Langwell driver

* tag 'gpio-fixes-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  drivers/gpio/gpio-langwell.c: fix error return code
  gpio: samsung: Fix off-by-one bug in gpio addresses
  ARM: dts: imx: add alias for gpio
  gpio/mxc: specify gpio base for device tree probe
  gpio/mxc: remove redundant shadow variables initialization
  GPIO: gpio-pxa: fix devicetree functions
  gpio: msic: Fix calculating register address in msic_gpio_to_oreg()
  gpio-sch: Fix leak of resource

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Sun, 12 Aug 2012 18:36:13 +0000 (21:36 +0300)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

Pull a security subsystem fix from James Morris
 "This fixes an issue in the Yama LSM"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  Yama: higher restrictions should block PTRACE_TRACEME

12 years agoMerge tag 'pm-for-3.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Sun, 12 Aug 2012 18:34:09 +0000 (21:34 +0300)]
Merge tag 'pm-for-3.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael J. Wysocki:

 - Fix for two recent regressions in the generic PM domains framework.

 - Revert of a commit that introduced a resume regression and is
   conceptually incorrect in my opinion.

 - Fix for a return value in pcc-cpufreq.c from Julia Lawall.

 - RTC wakeup signaling fix from Neil Brown.

 - Suppression of compiler warnings for CONFIG_PM_SLEEP unset in ACPI,
   platform/x86 and TPM drivers.

* tag 'pm-for-3.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  tpm_tis / PM: Fix unused function warning for CONFIG_PM_SLEEP
  platform / x86 / PM: Fix unused function warnings for CONFIG_PM_SLEEP
  ACPI / PM: Fix unused function warnings for CONFIG_PM_SLEEP
  Revert "NMI watchdog: fix for lockup detector breakage on resume"
  PM: Make dev_pm_get_subsys_data() always return 0 on success
  drivers/cpufreq/pcc-cpufreq.c: fix error return code
  RTC: Avoid races between RTC alarm wakeup and suspend.

12 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Sun, 12 Aug 2012 18:31:44 +0000 (21:31 +0300)]
Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc bug fixes from Arnd Bergmann:
 "These are a bunch of bug fixes that came in after the merge window and
  one update for the MAINTAINERS file.

  The largest part of the fixes are patches that address bugs found by
  building all the ARM defconfig files.  There are a lot more warnings
  that we have patches for, but the others are either still under
  discussion or are harmless and do not cause actual problems besides
  making the build slightly noisy."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (30 commits)
  ARM: davinci: remove broken ntosd2_init_i2c
  ARM: s3c24xx: enable CONFIG_BUG for tct_hammer
  omap-rng: fix use of SIMPLE_DEV_PM_OPS
  spi/s3c64xx: improve error handling
  mtd/omap2: fix dmaengine_slave_config error handling
  gpio: em: do not discard em_gio_irq_domain_cleanup
  ARM: exynos: exynos_pm_add_dev_to_genpd may be unused
  ARM: imx: gpmi-nand depends on mxs-dma
  ARM: integrator: include <linux/export.h>
  ARM: s3c24xx: use new PWM driver
  ARM: sa1100: include linux/io.h in hackkit leds code
  Input: eeti_ts: pass gpio value instead of IRQ
  ARM: pxa: remove irq_to_gpio from ezx-pcap driver
  ARM: tegra: more regulator fixes for Harmony
  usb/ohci-omap: remove unused variable
  mfd/asic3: fix asic3_mfd_probe return value
  ARM: kirkwood: fix typo in Makefile.boot
  i.MX27: Fix emma-prp and csi clocks.
  ARM: integrator: use clk_prepare_enable() for timer
  MAINTAINERS: update entry for Linus Walleij
  ...

12 years agoMerge branch 'fixes-for-linus-for-3.6-rc2' of git://git.linaro.org/people/mszyprowski...
Linus Torvalds [Sun, 12 Aug 2012 18:30:30 +0000 (21:30 +0300)]
Merge branch 'fixes-for-linus-for-3.6-rc2' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping

Pull three dma-mapping fixes from Marek Szyprowski.

* 'fixes-for-linus-for-3.6-rc2' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping:
  ARM: dma-mapping: fix incorrect freeing of atomic allocations
  ARM: dma-mapping: fix atomic allocation alignment
  ARM: mm: fix MMU mapping of CMA regions

12 years agoMerge branch 'for-linus-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason...
Linus Torvalds [Sun, 12 Aug 2012 18:28:41 +0000 (21:28 +0300)]
Merge branch 'for-linus-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

Pull btrfs merge fix from Chris Mason:
 "This fixes a merge error in rc1.  The calls to mnt_want_write should
  have been removed."

* 'for-linus-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: remove mnt_want_write call in btrfs_mksubvol

12 years agoprintk: Fix calculation of length used to discard records
Jeff Mahoney [Fri, 10 Aug 2012 19:07:09 +0000 (15:07 -0400)]
printk: Fix calculation of length used to discard records

While tracking down a weird buffer overflow issue in a program that
looked to be sane, I started double checking the length returned by
syslog(SYSLOG_ACTION_READ_ALL, ...) to make sure it wasn't overflowing
the buffer.

Sure enough, it was.  I saw this in strace:

  11339 syslog(SYSLOG_ACTION_READ_ALL, "<5>[244017.708129] REISERFS (dev"..., 8192) = 8279

It turns out that the loops that calculate how much space the entries
will take when they're copied don't include the newlines and prefixes
that will be included in the final output since prev flags is passed as
zero.

This patch properly accounts for it and fixes the overflow.

CC: stable@kernel.org
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agocodel: refine one condition to avoid a nul rec_inv_sqrt
Eric Dumazet [Sun, 29 Jul 2012 20:52:21 +0000 (20:52 +0000)]
codel: refine one condition to avoid a nul rec_inv_sqrt

One condition before codel_Newton_step() was not good if
we never left the dropping state for a flow. As a result
rec_inv_sqrt was 0, instead of the ~0 initial value.

codel control law was then set to a very aggressive mode, dropping
many packets before reaching 'target' and recovering from this problem.

To keep codel_vars_init() as efficient as possible, refine
the condition to make sure rec_inv_sqrt initial value is correct

Many thanks to Anton Mich for discovering the issue and suggesting
a fix.

Reported-by: Anton Mich <lp2s1h@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoixgbe: add missing braces
Emil Tantilov [Fri, 10 Aug 2012 07:35:14 +0000 (07:35 +0000)]
ixgbe: add missing braces

This patch adds missing braces around the 10gig link check to include the check for  KR support.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Reported-by: Sascha Wildner <saw@online.de>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville...
David S. Miller [Fri, 10 Aug 2012 23:26:41 +0000 (16:26 -0700)]
Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless

John W. Linville says:

====================
Here is a handful of fixes intended for 3.6.

Daniel Drake offers a cfg80211 fix to consume pending events before
taking a wireless device down.  This prevents a resource leak.

Stanislaw Gruszka gives us a fix for a NULL pointer dereference in
rt61pci.

Johannes Berg provides an iwlwifi patch to disable "greenfield" mode.
Use of that mode was causing a rate scaling problem in for iwlwifi.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv4: fix ip_send_skb()
Eric Dumazet [Fri, 10 Aug 2012 02:22:47 +0000 (02:22 +0000)]
ipv4: fix ip_send_skb()

ip_send_skb() can send orphaned skb, so we must pass the net pointer to
avoid possible NULL dereference in error path.

Bug added by commit 3a7c384ffd57 (ipv4: tcp: unicast_sock should not
land outside of TCP stack)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
John W. Linville [Fri, 10 Aug 2012 18:05:38 +0000 (14:05 -0400)]
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem

12 years agotpm_tis / PM: Fix unused function warning for CONFIG_PM_SLEEP
Rafael J. Wysocki [Thu, 9 Aug 2012 21:00:35 +0000 (23:00 +0200)]
tpm_tis / PM: Fix unused function warning for CONFIG_PM_SLEEP

According to a compiler warning, the tpm_tis_resume() function is not
used for CONFIG_PM_SLEEP unset, so add a #ifdef to prevent it from
being built in that case.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
12 years agoplatform / x86 / PM: Fix unused function warnings for CONFIG_PM_SLEEP
Rafael J. Wysocki [Thu, 9 Aug 2012 21:00:13 +0000 (23:00 +0200)]
platform / x86 / PM: Fix unused function warnings for CONFIG_PM_SLEEP

According to compiler warnings, quite some suspend/resume functions
in platform x86 drivers are not used for CONFIG_PM_SLEEP unset, so
add #ifdefs to prevent them from being built in that case.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
12 years agoACPI / PM: Fix unused function warnings for CONFIG_PM_SLEEP
Rafael J. Wysocki [Thu, 9 Aug 2012 21:00:02 +0000 (23:00 +0200)]
ACPI / PM: Fix unused function warnings for CONFIG_PM_SLEEP

According to compiler warnings, several suspend/resume functions
in ACPI drivers are not used for CONFIG_PM_SLEEP unset, so add
#ifdefs to prevent them from being built in that case.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
12 years agoARM: davinci: remove broken ntosd2_init_i2c
Arnd Bergmann [Mon, 30 Apr 2012 14:03:33 +0000 (14:03 +0000)]
ARM: davinci: remove broken ntosd2_init_i2c

ntosd2_init_i2c walks the ntosd2_i2c_info array, which it expects to
be populated with at least one member. gcc correctly warns about
the out-of-bounds access here.

Since this can not possibly work, it's better to disable i2c
support entirely on this board.

Without this patch, building davinci_all_defconfig results in:

arch/arm/mach-davinci/board-neuros-osd2.c: In function 'davinci_ntosd2_init':
arch/arm/mach-davinci/board-neuros-osd2.c:187:20: warning: array subscript is above array bounds [-Warray-bounds]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Andrey Porodko <panda@chelcom.ru>
12 years agoARM: s3c24xx: enable CONFIG_BUG for tct_hammer
Arnd Bergmann [Thu, 3 May 2012 12:47:54 +0000 (12:47 +0000)]
ARM: s3c24xx: enable CONFIG_BUG for tct_hammer

Disabling CONFIG_BUG creates an insane amount of build warnings, which
makes it useless to check for building defconfigs to see if new
warnings show up.

Without this patch, building tct_hammer_defconfig results in:

net/packet/af_packet.c: In function 'tpacket_rcv':
net/packet/af_packet.c:1889:30: warning: 'hdrlen' may be used uninitialized in this function [-Wuninitialized]
net/core/ethtool.c: In function 'ethtool_get_feature_mask':
net/core/ethtool.c:213:1: warning: control reaches end of non-void function [-Wreturn-type]
block/cfq-iosched.c: In function 'cfq_async_queue_prio':
block/cfq-iosched.c:2914:1: warning: control reaches end of non-void function [-Wreturn-type]
mm/bootmem.c: In function 'mark_bootmem':
mm/bootmem.c:352:1: warning: control reaches end of non-void function [-Wreturn-type]
net/core/dev.c: In function 'skb_warn_bad_offload':
net/core/dev.c:1904:33: warning: unused variable 'null_features' [-Wunused-variable]
drivers/mtd/chips/cfi_probe.c: In function 'cfi_chip_setup':
include/linux/mtd/cfi.h:489:3: warning: 'r.x[0]' may be used uninitialized in this function [-Wuninitialized]
include/linux/mtd/map.h:394:11: note: 'r.x[0]' was declared here
include/linux/mtd/cfi.h:489:3: warning: 'r.x[0]' may be used uninitialized in this function [-Wuninitialized]
(and many more)

The size of vmlinux increases by 1.78% because of this:

size obj-arm/vmlinux.nobug
   text    data     bss     dec     hex filename
   2108474  116916   55352 2280742  22cd26 obj-arm/vmlinux
size obj-arm/vmlinux.bug
   text    data     bss     dec     hex filename
   2150804  116916   53696 2321416  236c08 obj-arm/vmlinux

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
12 years agoMerge branch 'testing/new-warnings' into fixes
Arnd Bergmann [Fri, 10 Aug 2012 10:28:57 +0000 (12:28 +0200)]
Merge branch 'testing/new-warnings' into fixes

These patches all fix bugs that were newly introduced in v3.6-rc1
and found because they cause a gcc warning with one of the ARM
defconfigs. Most of them are harmless, but since we're trying
to get rid of all warnings eventually, we can start with the ones
that were not there before.

* testing/new-warnings:
  omap-rng: fix use of SIMPLE_DEV_PM_OPS
  spi/s3c64xx: improve error handling
  mtd/omap2: fix dmaengine_slave_config error handling
  gpio: em: do not discard em_gio_irq_domain_cleanup
  ARM: exynos: exynos_pm_add_dev_to_genpd may be unused
  usb/ohci-omap: remove unused variable
  mfd/asic3: fix asic3_mfd_probe return value

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoomap-rng: fix use of SIMPLE_DEV_PM_OPS
Arnd Bergmann [Sat, 4 Aug 2012 07:11:34 +0000 (07:11 +0000)]
omap-rng: fix use of SIMPLE_DEV_PM_OPS

omap_rng_suspend and omap_rng_resume are unused if CONFIG_PM is enabled
but CONFIG_PM_SLEEP is disabled. I found this while building all defconfig
files on ARM. It's not clear to me if this is the right solution, but
at least it makes the code consistent again.

Without this patch, building omap1_defconfig results in:

drivers/char/hw_random/omap-rng.c:165:12: warning: 'omap_rng_suspend' defined but not used [-Wunused-function]
drivers/char/hw_random/omap-rng.c:171:12: warning: 'omap_rng_resume' defined but not used [-Wunused-function]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Kevin Hilman <khilman@ti.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
12 years agospi/s3c64xx: improve error handling
Arnd Bergmann [Sat, 4 Aug 2012 11:18:20 +0000 (11:18 +0000)]
spi/s3c64xx: improve error handling

When a device tree definition os an s3c64xx SPI master is missing
a "controller-data" subnode, the newly added s3c64xx_get_slave_ctrldata
function might use uninitialized memory in place of that node,
which was correctly reported by gcc.

Without this patch, building s3c6400_defconfig results in:

drivers/spi/spi-s3c64xx.c: In function 's3c64xx_get_slave_ctrldata.isra.25':
drivers/spi/spi-s3c64xx.c:841:5: warning: 'data_np' may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Jaswinder Singh <jaswinder.singh@linaro.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
12 years agomtd/omap2: fix dmaengine_slave_config error handling
Arnd Bergmann [Sat, 4 Aug 2012 11:05:25 +0000 (11:05 +0000)]
mtd/omap2: fix dmaengine_slave_config error handling

The newly added dmaengine support in the omap2 nand driver
potentially causes an undefined return value from the
omap_nand_probe function when dmaengine_slave_config
reports an error. Let's handle this by returning the
same error back to the caller.

Without this patch, building omap2plus_defconfig results in:

drivers/mtd/nand/omap2.c: In function 'omap_nand_probe':
drivers/mtd/nand/omap2.c:1154:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Grazvydas Ignotas <notasas@gmail.com>
12 years agogpio: em: do not discard em_gio_irq_domain_cleanup
Arnd Bergmann [Sat, 4 Aug 2012 10:33:24 +0000 (10:33 +0000)]
gpio: em: do not discard em_gio_irq_domain_cleanup

The newly added gpio-em driver marks its em_gio_irq_domain_cleanup
function as __devexit, which would lead to that function being
discarded in case CONFIG_HOTPLUG is disabled. However, the function
is also called by the error handling logic em_gio_probe, which
would cause a jump into a NULL pointer if it was removed from the
kernel or module.

Without this patch, building kzm9d_defconfig results in:

WARNING: drivers/gpio/built-in.o(.devinit.text+0x330): Section mismatch in reference from the function em_gio_probe() to the function .devexit.text:em_gio_irq_domain_cleanup()
The function __devinit em_gio_probe() references
a function __devexit em_gio_irq_domain_cleanup().
This is often seen when error handling in the init function
uses functionality in the exit path.
The fix is often to remove the __devexit annotation of
em_gio_irq_domain_cleanup() so it may be used outside an exit section.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Magnus Damm <damm@opensource.se>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
12 years agoARM: exynos: exynos_pm_add_dev_to_genpd may be unused
Arnd Bergmann [Sat, 4 Aug 2012 10:28:33 +0000 (10:28 +0000)]
ARM: exynos: exynos_pm_add_dev_to_genpd may be unused

exynos_pm_add_dev_to_genpd is used if one or more out of a large
number of Kconfig symbols are enabled. However the new
exynos_defconfig selects none of those, so the function becomes
unused. Marking it so lets the compiler automatically discard
it.

Without this patch, building exynos_defconfig results in:

arch/arm/mach-exynos/pm_domains.c:118:123: warning: 'exynos_pm_add_dev_to_genpd' defined but not used [-Wunused-function]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
12 years agoYama: higher restrictions should block PTRACE_TRACEME
Kees Cook [Fri, 10 Aug 2012 02:01:26 +0000 (19:01 -0700)]
Yama: higher restrictions should block PTRACE_TRACEME

The higher ptrace restriction levels should be blocking even
PTRACE_TRACEME requests. The comments in the LSM documentation are
misleading about when the checks happen (the parent does not go through
security_ptrace_access_check() on a PTRACE_TRACEME call).

Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org # 3.5.x and later
Signed-off-by: James Morris <james.l.morris@oracle.com>
12 years agonet: tcp: ipv6_mapped needs sk_rx_dst_set method
Eric Dumazet [Thu, 9 Aug 2012 14:11:00 +0000 (14:11 +0000)]
net: tcp: ipv6_mapped needs sk_rx_dst_set method

commit 5d299f3d3c8a2fb (net: ipv6: fix TCP early demux) added a
regression for ipv6_mapped case.

[   67.422369] SELinux: initialized (dev autofs, type autofs), uses
genfs_contexts
[   67.449678] SELinux: initialized (dev autofs, type autofs), uses
genfs_contexts
[   92.631060] BUG: unable to handle kernel NULL pointer dereference at
(null)
[   92.631435] IP: [<          (null)>]           (null)
[   92.631645] PGD 0
[   92.631846] Oops: 0010 [#1] SMP
[   92.632095] Modules linked in: autofs4 sunrpc ipv6 dm_mirror
dm_region_hash dm_log dm_multipath dm_mod video sbs sbshc battery ac lp
parport sg snd_hda_intel snd_hda_codec snd_seq_oss snd_seq_midi_event
snd_seq snd_seq_device pcspkr snd_pcm_oss snd_mixer_oss snd_pcm
snd_timer serio_raw button floppy snd i2c_i801 i2c_core soundcore
snd_page_alloc shpchp ide_cd_mod cdrom microcode ehci_hcd ohci_hcd
uhci_hcd
[   92.634294] CPU 0
[   92.634294] Pid: 4469, comm: sendmail Not tainted 3.6.0-rc1 #3
[   92.634294] RIP: 0010:[<0000000000000000>]  [<          (null)>]
(null)
[   92.634294] RSP: 0018:ffff880245fc7cb0  EFLAGS: 00010282
[   92.634294] RAX: ffffffffa01985f0 RBX: ffff88024827ad00 RCX:
0000000000000000
[   92.634294] RDX: 0000000000000218 RSI: ffff880254735380 RDI:
ffff88024827ad00
[   92.634294] RBP: ffff880245fc7cc8 R08: 0000000000000001 R09:
0000000000000000
[   92.634294] R10: 0000000000000000 R11: ffff880245fc7bf8 R12:
ffff880254735380
[   92.634294] R13: ffff880254735380 R14: 0000000000000000 R15:
7fffffffffff0218
[   92.634294] FS:  00007f4516ccd6f0(0000) GS:ffff880256600000(0000)
knlGS:0000000000000000
[   92.634294] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[   92.634294] CR2: 0000000000000000 CR3: 0000000245ed1000 CR4:
00000000000007f0
[   92.634294] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[   92.634294] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[   92.634294] Process sendmail (pid: 4469, threadinfo ffff880245fc6000,
task ffff880254b8cac0)
[   92.634294] Stack:
[   92.634294]  ffffffff813837a7 ffff88024827ad00 ffff880254b6b0e8
ffff880245fc7d68
[   92.634294]  ffffffff81385083 00000000001d2680 ffff8802547353a8
ffff880245fc7d18
[   92.634294]  ffffffff8105903a ffff88024827ad60 0000000000000002
00000000000000ff
[   92.634294] Call Trace:
[   92.634294]  [<ffffffff813837a7>] ? tcp_finish_connect+0x2c/0xfa
[   92.634294]  [<ffffffff81385083>] tcp_rcv_state_process+0x2b6/0x9c6
[   92.634294]  [<ffffffff8105903a>] ? sched_clock_cpu+0xc3/0xd1
[   92.634294]  [<ffffffff81059073>] ? local_clock+0x2b/0x3c
[   92.634294]  [<ffffffff8138caf3>] tcp_v4_do_rcv+0x63a/0x670
[   92.634294]  [<ffffffff8133278e>] release_sock+0x128/0x1bd
[   92.634294]  [<ffffffff8139f060>] __inet_stream_connect+0x1b1/0x352
[   92.634294]  [<ffffffff813325f5>] ? lock_sock_nested+0x74/0x7f
[   92.634294]  [<ffffffff8104b333>] ? wake_up_bit+0x25/0x25
[   92.634294]  [<ffffffff813325f5>] ? lock_sock_nested+0x74/0x7f
[   92.634294]  [<ffffffff8139f223>] ? inet_stream_connect+0x22/0x4b
[   92.634294]  [<ffffffff8139f234>] inet_stream_connect+0x33/0x4b
[   92.634294]  [<ffffffff8132e8cf>] sys_connect+0x78/0x9e
[   92.634294]  [<ffffffff813fd407>] ? sysret_check+0x1b/0x56
[   92.634294]  [<ffffffff81088503>] ? __audit_syscall_entry+0x195/0x1c8
[   92.634294]  [<ffffffff811cc26e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[   92.634294]  [<ffffffff813fd3e2>] system_call_fastpath+0x16/0x1b
[   92.634294] Code:  Bad RIP value.
[   92.634294] RIP  [<          (null)>]           (null)
[   92.634294]  RSP <ffff880245fc7cb0>
[   92.634294] CR2: 0000000000000000
[   92.648982] ---[ end trace 24e2bed94314c8d9 ]---
[   92.649146] Kernel panic - not syncing: Fatal exception in interrupt

Fix this using inet_sk_rx_dst_set(), and export this function in case
IPv6 is modular.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv4: tcp: unicast_sock should not land outside of TCP stack
Eric Dumazet [Thu, 9 Aug 2012 13:56:06 +0000 (13:56 +0000)]
ipv4: tcp: unicast_sock should not land outside of TCP stack

commit be9f4a44e7d41cee (ipv4: tcp: remove per net tcp_sock) added a
selinux regression, reported and bisected by John Stultz

selinux_ip_postroute_compat() expect to find a valid sk->sk_security
pointer, but this field is NULL for unicast_sock

It turns out that unicast_sock are really temporary stuff to be able
to reuse  part of IP stack (ip_append_data()/ip_push_pending_frames())

Fact is that frames sent by ip_send_unicast_reply() should be orphaned
to not fool LSM.

Note IPv6 never had this problem, as tcp_v6_send_response() doesnt use a
fake socket at all. I'll probably implement tcp_v4_send_response() to
remove these unicast_sock in linux-3.7

Reported-by: John Stultz <johnstul@us.ibm.com>
Bisected-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Paul Moore <paul@paul-moore.com>
Cc: Eric Paris <eparis@parisplace.org>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agobnx2x: Fix recovery flow cleanup during probe
Yuval Mintz [Thu, 9 Aug 2012 04:37:26 +0000 (04:37 +0000)]
bnx2x: Fix recovery flow cleanup during probe

During probe, every function probed clears the recovery registers from
all functions on its path - thus signaling that given a future recovery
event, there will be no need to wait for those functions.

This is a flawed behaviour - each function should only be responsible
for its own bit.

Since this registers are handled during the load/unload routines,
this cleanup is removed altogether.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agobnx2x: fix unload previous driver flow when flr-capable
Yuval Mintz [Thu, 9 Aug 2012 04:37:25 +0000 (04:37 +0000)]
bnx2x: fix unload previous driver flow when flr-capable

The existing previous driver unload flow is flawed, causing the probe of
functions reaching the 'uncommon fork' in flr-capable devices to fail.

This patch resolves this, as well as fixing the flow for hypervisors which
disable flr capabilities from functions as they pass them as PDA to VMs,
as we cannot base the flow on the pci configuration space.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agotun: don't zeroize sock->file on detach
Stanislav Kinsbursky [Thu, 9 Aug 2012 02:50:40 +0000 (02:50 +0000)]
tun: don't zeroize sock->file on detach

This is a fix for bug, introduced in 3.4 kernel by commit
1ab5ecb90cb6a3df1476e052f76a6e8f6511cb3d ("tun: don't hold network
namespace by tun sockets"), which, among other things, replaced simple
sock_put() by sk_release_kernel(). Below is sequence, which leads to
oops for non-persistent devices:

tun_chr_close()
tun_detach() <== tun->socket.file = NULL
tun_free_netdev()
sk_release_sock()
sock_release(sock->file == NULL)
iput(SOCK_INODE(sock)) <== dereference on NULL pointer

This patch just removes zeroing of socket's file from __tun_detach().
sock_release() will do this.

Cc: stable@vger.kernel.org
Reported-by: Ruan Zhijie <ruanzhijie@hotmail.com>
Tested-by: Ruan Zhijie <ruanzhijie@hotmail.com>
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoBtrfs: remove mnt_want_write call in btrfs_mksubvol
Alexander Block [Thu, 2 Aug 2012 23:16:20 +0000 (17:16 -0600)]
Btrfs: remove mnt_want_write call in btrfs_mksubvol

We got a recursive lock in mksubvol because the caller already held
a lock. I think we got into this due to a merge error. Commit a874a63
removed the mnt_want_write call from btrfs_mksubvol and added a
replacement call to mnt_want_write_file in btrfs_ioctl_snap_create_transid.
Commit e7848683 however tried to move all calls to mnt_want_write above
i_mutex. So somewhere while merging this, it got mixed up. The
solution is to remove the mnt_want_write call completely from
mksubvol.

Reported-by: David Sterba <dave@jikos.cz>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
12 years agoARM: imx: gpmi-nand depends on mxs-dma
Arnd Bergmann [Sat, 4 Aug 2012 10:48:12 +0000 (10:48 +0000)]
ARM: imx: gpmi-nand depends on mxs-dma

It is not currently possible to build the gpmi-nand driver without
also building the mxs-dma driver. Clarify this Kconfig and enable
both in the defconfig file so we can build it again with both enabled.

drivers/built-in.o: In function `gpmi_dma_filter':
clk-fixed-factor.c:(.text+0xafc18): undefined reference to `mxs_dma_is_apbh'
make[1]: *** [vmlinux] Error 1
make: *** [sub-make] Error 2

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
12 years agoARM: integrator: include <linux/export.h>
Arnd Bergmann [Sat, 4 Aug 2012 10:31:24 +0000 (10:31 +0000)]
ARM: integrator: include <linux/export.h>

Without this patch, building integrator_defconfig results in:

arch/arm/mach-integrator/core.c:150:1: warning: data definition has no type or storage class [enabled by default]
arch/arm/mach-integrator/core.c:150:1: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL' [-Wimplicit-int]
arch/arm/mach-integrator/core.c:150:1: warning: parameter names (without types) in function declaration [enabled by default]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
12 years agoARM: s3c24xx: use new PWM driver
Arnd Bergmann [Sat, 4 Aug 2012 07:52:19 +0000 (07:52 +0000)]
ARM: s3c24xx: use new PWM driver

The samsung PWM driver has moved to the new PWM subsystem, which
changed the Kconfig symbol for that driver, but the rx1950 and
gta02 boards still uses the old one.

Without this patch, building s3c2410_defconfig results in:

arch/arm/mach-s3c24xx/built-in.o: In function `rx1950_lcd_power':
arch/arm/mach-s3c24xx/mach-rx1950.c:430: undefined reference to `pwm_config'
arch/arm/mach-s3c24xx/mach-rx1950.c:431: undefined reference to `pwm_disable'
arch/arm/mach-s3c24xx/mach-rx1950.c:437: undefined reference to `pwm_config'
arch/arm/mach-s3c24xx/mach-rx1950.c:438: undefined reference to `pwm_enable'
arch/arm/mach-s3c24xx/built-in.o: In function `rx1950_backlight_exit':
arch/arm/mach-s3c24xx/mach-rx1950.c:504: undefined reference to `pwm_free'
arch/arm/mach-s3c24xx/built-in.o: In function `rx1950_backlight_init':
arch/arm/mach-s3c24xx/mach-rx1950.c:487: undefined reference to `pwm_request'

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Tushar Behera <tushar.behera@linaro.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
12 years agoARM: sa1100: include linux/io.h in hackkit leds code
Arnd Bergmann [Sat, 4 Aug 2012 04:59:34 +0000 (04:59 +0000)]
ARM: sa1100: include linux/io.h in hackkit leds code

The sa1100 definition of the io_p2v macro has changed in v3.6, and this one
file stopped working because of that.

Without this patch, building hackkit_defconfig results in:

arch/arm/mach-sa1100/leds-hackkit.c: In function 'hackkit_leds_event':
arch/arm/mach-sa1100/leds-hackkit.c:39:4: error: implicit declaration of function 'IOMEM' [-Werror=implicit-function-declaration]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@arm.linux.org.uk>
12 years agoInput: eeti_ts: pass gpio value instead of IRQ
Arnd Bergmann [Mon, 30 Apr 2012 16:21:37 +0000 (16:21 +0000)]
Input: eeti_ts: pass gpio value instead of IRQ

The EETI touchscreen asserts its IRQ line as soon as it has data in its
internal buffers. The line is automatically deasserted once all data has
been read via I2C. Hence, the driver has to monitor the GPIO line and
cannot simply rely on the interrupt handler reception.

In the current implementation of the driver, irq_to_gpio() is used to
determine the GPIO number from the i2c_client's IRQ value.

As irq_to_gpio() is not available on all platforms, this patch changes
this and makes the driver ignore the passed in IRQ. Instead, a GPIO is
added to the platform_data struct and gpio_to_irq is used to derive the
IRQ from that GPIO. If this fails, bail out. The driver is only able to
work in environments where the touchscreen GPIO can be mapped to an
IRQ.

Without this patch, building raumfeld_defconfig results in:

drivers/input/touchscreen/eeti_ts.c: In function 'eeti_ts_irq_active':
drivers/input/touchscreen/eeti_ts.c:65:2: error: implicit declaration of function 'irq_to_gpio' [-Werror=implicit-function-declaration]

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: stable@vger.kernel.org (v3.2+)
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Sven Neumann <s.neumann@raumfeld.com>
Cc: linux-input@vger.kernel.org
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
12 years agoARM: pxa: remove irq_to_gpio from ezx-pcap driver
Arnd Bergmann [Sun, 5 Aug 2012 14:58:37 +0000 (14:58 +0000)]
ARM: pxa: remove irq_to_gpio from ezx-pcap driver

The irq_to_gpio function was removed from the pxa platform
in linux-3.2, and this driver has been broken since.

There is actually no in-tree user of this driver that adds
this platform device, but the driver can and does get enabled
on some platforms.

Without this patch, building ezx_defconfig results in:

drivers/mfd/ezx-pcap.c: In function 'pcap_isr_work':
drivers/mfd/ezx-pcap.c:205:2: error: implicit declaration of function 'irq_to_gpio' [-Werror=implicit-function-declaration]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: stable@vger.kernel.org (v3.2+)
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Daniel Ribeiro <drwyrm@gmail.com>
12 years agoARM: tegra: more regulator fixes for Harmony
Stephen Warren [Fri, 3 Aug 2012 23:45:21 +0000 (17:45 -0600)]
ARM: tegra: more regulator fixes for Harmony

Commit 3d55c29 "ARM: tegra: harmony: add regulator supply name and its
input supply" was supposed to fix all the problems with regulators on
Harmony. However, it appears that I only tested it when booting using
board files, not when booting using device tree. This change fixes two
problems with regulators when booting using device tree:

1) That patch only created the vdd_sys regulator when booting using a
   board file. Since this is the root of the whole regulator tree, this
   caused no regulators to successfully initialize when booting using
   device tree. The registration of vdd_sys is moved to fix this.

2) When booting use DT, the regulator core sets has_full_constraints,
   which in turn causes the core to turn off any regulators not marked
   as always on. Some of the affected regulators are required for basic
   system operation. To solve this, add always on constraints to all
   relevant regulators. This doesn't affect booting using a board file
   since nothing sets has_full_constraints in that case.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoigb: Fix register defines for all non-82575 hardware
Alexander Duyck [Wed, 8 Aug 2012 05:18:04 +0000 (05:18 +0000)]
igb: Fix register defines for all non-82575 hardware

It looks like the register defines for DCA were never updated after going from
82575 to 82576.  This change addresses that by updating the defines.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
12 years agoe1000e: fix panic while dumping packets on Tx hang with IOMMU
Emil Tantilov [Wed, 1 Aug 2012 08:12:21 +0000 (08:12 +0000)]
e1000e: fix panic while dumping packets on Tx hang with IOMMU

This patch resolves a "BUG: unable to handle kernel paging request at ..."
oops while dumping packet data. The issue occurs with IOMMU enabled due to
the address provided by phys_to_virt().

This patch avoids phys_to_virt() by using skb->data and the address of the
pages allocated for Rx.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
12 years agoigb: fix panic while dumping packets on Tx hang with IOMMU
Emil Tantilov [Sat, 28 Jul 2012 05:07:48 +0000 (05:07 +0000)]
igb: fix panic while dumping packets on Tx hang with IOMMU

This patch resolves a "BUG: unable to handle kernel paging request at ..."
oops while dumping packet data. The issue occurs with IOMMU enabled due to
the address provided by phys_to_virt().

This patch avoids phys_to_virt() by making using skb->data and the address
of the pages allocated for Rx.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
12 years agotcp: must free metrics at net dismantle
Eric Dumazet [Thu, 9 Aug 2012 09:19:13 +0000 (11:19 +0200)]
tcp: must free metrics at net dismantle

We currently leak all tcp metrics at struct net dismantle time.

tcp_net_metrics_exit() frees the hash table, we must first
iterate it to free all metrics.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoARM: dma-mapping: fix incorrect freeing of atomic allocations
Aaro Koskinen [Tue, 7 Aug 2012 12:44:05 +0000 (14:44 +0200)]
ARM: dma-mapping: fix incorrect freeing of atomic allocations

Commit e9da6e9905e639b0f842a244bc770b48ad0523e9 (ARM: dma-mapping:
remove custom consistent dma region) changed the way atomic allocations
are handled. However, arm_dma_free() was not modified accordingly, and
as a result freeing of atomic allocations does not work correctly when
CMA is disabled. Memory is leaked and following WARNINGs are seen:

[   57.698911] ------------[ cut here ]------------
[   57.753518] WARNING: at arch/arm/mm/dma-mapping.c:263 arm_dma_free+0x88/0xe4()
[   57.811473] trying to free invalid coherent area: e0848000
[   57.867398] Modules linked in: sata_mv(-)
[   57.921373] [<c000d270>] (unwind_backtrace+0x0/0xf0) from [<c0015430>] (warn_slowpath_common+0x50/0x68)
[   58.033924] [<c0015430>] (warn_slowpath_common+0x50/0x68) from [<c00154dc>] (warn_slowpath_fmt+0x30/0x40)
[   58.152024] [<c00154dc>] (warn_slowpath_fmt+0x30/0x40) from [<c000dc18>] (arm_dma_free+0x88/0xe4)
[   58.219592] [<c000dc18>] (arm_dma_free+0x88/0xe4) from [<c008fa30>] (dma_pool_destroy+0x100/0x148)
[   58.345526] [<c008fa30>] (dma_pool_destroy+0x100/0x148) from [<c019a64c>] (release_nodes+0x144/0x218)
[   58.475782] [<c019a64c>] (release_nodes+0x144/0x218) from [<c0197e10>] (__device_release_driver+0x60/0xb8)
[   58.614260] [<c0197e10>] (__device_release_driver+0x60/0xb8) from [<c0198608>] (driver_detach+0xd8/0xec)
[   58.756527] [<c0198608>] (driver_detach+0xd8/0xec) from [<c0197c54>] (bus_remove_driver+0x7c/0xc4)
[   58.901648] [<c0197c54>] (bus_remove_driver+0x7c/0xc4) from [<c004bfac>] (sys_delete_module+0x19c/0x220)
[   59.051447] [<c004bfac>] (sys_delete_module+0x19c/0x220) from [<c0009140>] (ret_fast_syscall+0x0/0x2c)
[   59.207996] ---[ end trace 0745420412c0325a ]---
[   59.287110] ------------[ cut here ]------------
[   59.366324] WARNING: at arch/arm/mm/dma-mapping.c:263 arm_dma_free+0x88/0xe4()
[   59.450511] trying to free invalid coherent area: e0847000
[   59.534357] Modules linked in: sata_mv(-)
[   59.616785] [<c000d270>] (unwind_backtrace+0x0/0xf0) from [<c0015430>] (warn_slowpath_common+0x50/0x68)
[   59.790030] [<c0015430>] (warn_slowpath_common+0x50/0x68) from [<c00154dc>] (warn_slowpath_fmt+0x30/0x40)
[   59.972322] [<c00154dc>] (warn_slowpath_fmt+0x30/0x40) from [<c000dc18>] (arm_dma_free+0x88/0xe4)
[   60.070701] [<c000dc18>] (arm_dma_free+0x88/0xe4) from [<c008fa30>] (dma_pool_destroy+0x100/0x148)
[   60.256817] [<c008fa30>] (dma_pool_destroy+0x100/0x148) from [<c019a64c>] (release_nodes+0x144/0x218)
[   60.445201] [<c019a64c>] (release_nodes+0x144/0x218) from [<c0197e10>] (__device_release_driver+0x60/0xb8)
[   60.634148] [<c0197e10>] (__device_release_driver+0x60/0xb8) from [<c0198608>] (driver_detach+0xd8/0xec)
[   60.823623] [<c0198608>] (driver_detach+0xd8/0xec) from [<c0197c54>] (bus_remove_driver+0x7c/0xc4)
[   61.013268] [<c0197c54>] (bus_remove_driver+0x7c/0xc4) from [<c004bfac>] (sys_delete_module+0x19c/0x220)
[   61.203472] [<c004bfac>] (sys_delete_module+0x19c/0x220) from [<c0009140>] (ret_fast_syscall+0x0/0x2c)
[   61.393390] ---[ end trace 0745420412c0325b ]---

The patch fixes this.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
12 years agoARM: dma-mapping: fix atomic allocation alignment
Aaro Koskinen [Tue, 7 Aug 2012 12:39:25 +0000 (14:39 +0200)]
ARM: dma-mapping: fix atomic allocation alignment

The alignment mask is calculated incorrectly. Fixing the calculation
makes strange hangs/lockups disappear during the boot with Amstrad E3
and 3.6-rc1 kernel.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
12 years agoARM: mm: fix MMU mapping of CMA regions
Chris Brand [Tue, 7 Aug 2012 12:01:14 +0000 (14:01 +0200)]
ARM: mm: fix MMU mapping of CMA regions

Fix dma_contiguous_remap() so that it continues through all the
regions, even after encountering one that is outside lowmem.
Without this change, if you have two CMA regions, the first outside
lowmem and the seocnd inside lowmem, only the second one will get
set up in the MMU. Data written to that region then doesn't get
automatically flushed from the cache into memory.

Signed-off-by: Chris Brand <cbrand@broadcom.com>
[extended patch subject with 'fix' word]
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
12 years agonet/stmmac: mark probe function as __devinit
Arnd Bergmann [Wed, 8 Aug 2012 04:47:24 +0000 (04:47 +0000)]
net/stmmac: mark probe function as __devinit

Driver probe functions are generally __devinit so they will be
discarded after initialization for non-hotplug kernels.
This was found by a new warning after patch 6a228452d "stmmac: Add
device-tree support" adds a new __devinit function that is called
from stmmac_pltfr_probe.

Without this patch, building socfpga_defconfig results in:

WARNING: drivers/net/ethernet/stmicro/stmmac/stmmac.o(.text+0x5d4c): Section mismatch in reference from the function stmmac_pltfr_probe() to the function .devinit.text:stmmac_probe_config_dt()
The function stmmac_pltfr_probe() references
the function __devinit stmmac_probe_config_dt().
This is often because stmmac_pltfr_probe lacks a __devinit
annotation or the annotation of stmmac_probe_config_dt is wrong.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agolpc_eth: remove obsolete ifdefs
stigge@antcom.de [Wed, 8 Aug 2012 03:18:54 +0000 (03:18 +0000)]
lpc_eth: remove obsolete ifdefs

The #ifdefs regarding CONFIG_ARCH_LPC32XX_MII_SUPPORT and
CONFIG_ARCH_LPC32XX_IRAM_FOR_NET are obsolete since the symbols have been
removed from Kconfig and replaced by devicetree based configuration.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet/core: Fix potential memory leak in dev_set_alias()
Alexey Khoroshilov [Wed, 8 Aug 2012 00:33:25 +0000 (00:33 +0000)]
net/core: Fix potential memory leak in dev_set_alias()

Do not leak memory by updating pointer with potentially NULL realloc return value.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocdc-phonet: Don't leak in usbpn_open
Jesper Juhl [Tue, 7 Aug 2012 11:56:26 +0000 (11:56 +0000)]
cdc-phonet: Don't leak in usbpn_open

We allocate memory for 'req' with usb_alloc_urb() and then test
'if (!req || rx_submit(pnd, req, GFP_KERNEL | __GFP_COLD))'.
If we enter that branch due to '!req' then there is no problem. But if
we enter the branch due to 'req' being != 0 and the 'rx_submit()' call
being false, then we'll leak the memory we allocated.
Deal with the leak by always calling 'usb_free_urb(req)' when entering
the branch. If 'req' happens to be 0 then the call is harmless, if it
is not 0 then we free the memory we allocated but don't need.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Rémi Denis-Courmont <remi@remlab.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agobatman-adv: Fix mem leak in the batadv_tt_local_event() function
Jesper Juhl [Tue, 7 Aug 2012 08:32:34 +0000 (08:32 +0000)]
batman-adv: Fix mem leak in the batadv_tt_local_event() function

Memory is allocated for 'tt_change_node' with kmalloc().
'tt_change_node' may go out of scope really being used for anything
(except have a few members initialized) if we hit the 'del:' label.
This patch makes sure we free the memory in that case.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agosched: add missing group change to qfq_change_class
Paolo Valente [Tue, 7 Aug 2012 07:27:25 +0000 (07:27 +0000)]
sched: add missing group change to qfq_change_class

[Resending again, as the text was corrupted by the email client]

To speed up operations, QFQ internally divides classes into
groups. Which group a class belongs to depends on the ratio between
the maximum packet length and the weight of the class. Unfortunately
the function qfq_change_class lacks the steps for changing the group
of a class when the ratio max_pkt_len/weight of the class changes.

For example, when the last of the following three commands is
executed, the group of class 1:1 is not correctly changed:

tc disc add dev XXX root handle 1: qfq
tc class add dev XXX parent 1: qfq classid 1:1 weight 1
tc class change dev XXX parent 1: classid 1:1 qfq weight 4

Not changing the group of a class does not affect the long-term
bandwidth guaranteed to the class, as the latter is independent of the
maximum packet length, and correctly changes (only) if the weight of
the class changes. In contrast, if the group of the class is not
updated, the class is still guaranteed the short-term bandwidth and
packet delay related to its old group, instead of the guarantees that
it should receive according to its new weight and/or maximum packet
length. This may also break service guarantees for other classes.
This patch adds the missing operations.

Signed-off-by: Paolo Valente <paolo.valente@unimore.it>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: force dst_default_metrics to const section
Eric Dumazet [Tue, 7 Aug 2012 10:55:45 +0000 (10:55 +0000)]
net: force dst_default_metrics to const section

While investigating on network performance problems, I found this little
gem :

$ nm -v vmlinux | grep -1 dst_default_metrics
ffffffff82736540 b busy.46605
ffffffff82736560 B dst_default_metrics
ffffffff82736598 b dst_busy_list

Apparently, declaring a const array without initializer put it in
(writeable) bss section, in middle of possibly often dirtied cache
lines.

Since we really want dst_default_metrics be const to avoid any possible
false sharing and catch any buggy writes, I force a null initializer.

ffffffff818a4c20 R dst_default_metrics

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: fib: fix incorrect call_rcu_bh()
Eric Dumazet [Tue, 7 Aug 2012 00:47:11 +0000 (00:47 +0000)]
net: fib: fix incorrect call_rcu_bh()

After IP route cache removal, I believe rcu_bh() has very little use and
we should remove this RCU variant, since it adds some cycles in fast
path.

Anyway, the call_rcu_bh() use in fib_true is obviously wrong, since
some users only assert rcu_read_lock().

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agopptp: lookup route with the proper net namespace
Gao feng [Tue, 7 Aug 2012 00:23:11 +0000 (00:23 +0000)]
pptp: lookup route with the proper net namespace

pptp always use init_net as the net namespace to lookup
route, this will cause route lookup failed in container.

because we already set the correct net namespace to struct
sock in pptp_create,so fix this by using sock_net(sk) to
replace &init_net.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge branch 'fixes-for-3.6' of git://gitorious.org/linux-can/linux-can
David S. Miller [Wed, 8 Aug 2012 22:55:02 +0000 (15:55 -0700)]
Merge branch 'fixes-for-3.6' of git://gitorious.org/linux-can/linux-can

Marc Kleine-Budde says:

====================
here's a fix intended for the v3.6 release cycle. Oliver noticed and
fixed that the flags definition for the new canfd_frame contains
redundant and confusing information.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoaf_packet: Quiet sparse noise about using plain integer as NULL pointer
Ying Xue [Mon, 6 Aug 2012 16:27:10 +0000 (16:27 +0000)]
af_packet: Quiet sparse noise about using plain integer as NULL pointer

Quiets the sparse warning:
warning: Using plain integer as NULL pointer

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/ppwaskie/net
David S. Miller [Wed, 8 Aug 2012 22:41:04 +0000 (15:41 -0700)]
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/ppwaskie/net

Peter P Waskiewicz Jr says:

====================
This series contains fixes to the e1000e and igb drivers.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agodrivers: net: irda: bfin_sir: fix compile error
Sonic Zhang [Mon, 6 Aug 2012 16:08:36 +0000 (16:08 +0000)]
drivers: net: irda: bfin_sir: fix compile error

Bit IREN is replaced by UMOD_IRDA and UMOD_MASK since blackfin 60x added, but
this driver didn't update which will cause bfin_sir build error:

drivers/net/irda/bfin_sir.c:161:9: error: 'IREN' undeclared (first use in this
function)
drivers/net/irda/bfin_sir.c:435:18: error: 'IREN' undeclared (first use in
this function)
drivers/net/irda/bfin_sir.c:521:11: error: 'IREN' undeclared (first use in
this function)

This patch fix it.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Acked-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agousb/ohci-omap: remove unused variable
Arnd Bergmann [Sat, 4 Aug 2012 07:12:00 +0000 (07:12 +0000)]
usb/ohci-omap: remove unused variable

Commit c2e935a7d "USB: move transceiver from ehci_hcd and ohci_hcd to
hcd and rename it as phy" removed the last use of the "ohci" variable
in the usb_hcd_omap_remove function, but left the variable in place
unused.

Without this patch, building omap1_defconfig results in:

In file included from drivers/usb/host/ohci-hcd.c:1013:0:
drivers/usb/host/ohci-omap.c: In function 'usb_hcd_omap_remove':
drivers/usb/host/ohci-omap.c:406:19: warning: unused variable 'ohci' [-Wunused-variable]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Richard Zhao <richard.zhao@freescale.com>
12 years agomfd/asic3: fix asic3_mfd_probe return value
Arnd Bergmann [Sat, 4 Aug 2012 06:20:49 +0000 (06:20 +0000)]
mfd/asic3: fix asic3_mfd_probe return value

In commit 4f304245b "mfd: Set asic3 DS1WM clock_rate", a possible
path through asic3_mfd_probe was introduced that would lead to
an unpredictable return value, if everything succeeds but there
are pdata->leds is NULL. This was reported correctly by gcc.

Without this patch, building magician_defconfig results in:

drivers/mfd/asic3.c: In function 'asic3_mfd_probe':
drivers/mfd/asic3.c:940:2: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Paul Parsons <lost.distance@yahoo.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
12 years agoRevert "NMI watchdog: fix for lockup detector breakage on resume"
Rafael J. Wysocki [Tue, 7 Aug 2012 11:50:22 +0000 (13:50 +0200)]
Revert "NMI watchdog: fix for lockup detector breakage on resume"

Revert commit 45226e9 (NMI watchdog: fix for lockup detector breakage
on resume) which breaks resume from system suspend on my SH7372
Mackerel board (by causing a NULL pointer dereference to happen) and
is generally wrong, because it abuses the CPU hotplug functionality
in a shamelessly blatant way.

The original issue should be addressed through appropriate syscore
resume callback instead.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
12 years agoPM: Make dev_pm_get_subsys_data() always return 0 on success
Rafael J. Wysocki [Tue, 7 Aug 2012 11:50:14 +0000 (13:50 +0200)]
PM: Make dev_pm_get_subsys_data() always return 0 on success

Commits 1d5fcfec22 (PM / Domains: Add device domain data reference
counter) and 62d4490294 (PM / Domains: Allow device callbacks to be
added at any time) added checks for the return value of
dev_pm_get_subsys_data(), but those checks were incorrect, because
that function returned 1 on success in some cases.

Since all of the existing users of dev_pm_get_subsys_data() don't use
the positive value returned by it on success, change its definition
so that it always returns 0 when successful.

Reported-by: Heiko Stübner <heiko@sntech.de>
Reported-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
12 years agodrivers/cpufreq/pcc-cpufreq.c: fix error return code
Julia Lawall [Sun, 5 Aug 2012 20:56:43 +0000 (22:56 +0200)]
drivers/cpufreq/pcc-cpufreq.c: fix error return code

Convert a 0 error return code to a negative one, as returned elsewhere in the
function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier ret;
expression e,e1,e2,e3,e4,x;
@@

(
if (\(ret != 0\|ret < 0\) || ...) { ... return ...; }
|
ret = 0
)
... when != ret = e1
*x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...);
... when != x = e2
    when != ret = e3
*if (x == NULL || ...)
{
  ... when != ret = e4
*  return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
12 years agoRTC: Avoid races between RTC alarm wakeup and suspend.
NeilBrown [Sun, 5 Aug 2012 20:56:20 +0000 (22:56 +0200)]
RTC: Avoid races between RTC alarm wakeup and suspend.

If an RTC alarm fires just as suspend is happening, it is possible for
suspend to complete and the alarm to be missed.

To avoid the race, we must register the event with the PM core.

As the event is made visible to userspace through a thread which is
only scheduled by the interrupt, we need a pm_stay_awake/pm_relax
pair preventing suspend from the interrupt until the thread completes
its work.

This makes the pm_wakeup_event() call in cmos_interrupt unnecessary as
it provides suspend protection for all RTCs that use rtc_update_irq.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Wed, 8 Aug 2012 17:06:43 +0000 (20:06 +0300)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Missed rcu_assign_pointer() in mac80211 scanning, from Johannes
    Berg.

 2) Allow devices to limit the number of segments that an individual
    TCP TSO packet can use at a time, to deal with device and/or driver
    specific limitations.  From Ben Hutchings.

 3) Fix unexpected hard IPSEC expiration after setting the date.  From
    Fan Du.

 4) Memory leak fix in bxn2x driver, from Jesper Juhl.

 5) Fix two memory leaks in libertas driver, from Daniel Drake.

 6) Fix deref of out-of-range array index in packet scheduler generic
    actions layer.  From Hiroaki SHIMODA.

 7) Fix TX flow control errors in mlx4 driver, from Yevgeny Petrilin.

 8) Fix CRIS eth_v10.c driver build, from Randy Dunlap.

 9) Fix wrong SKB freeing in LLC protocol layer, from Sorin Dumitru.

10) The IP output path checks neigh lookup errors incorrectly, it needs
    to use IS_ERR().  From Vasiliy Kulikov.

11) An estimator leak leads to deref of freed memory in timer handler,
    fix from Hiroaki SHIMODA.

12) TCP early demux in ipv6 needs to use DST cookies in order to
    validate the RX route properly.  Fix from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (43 commits)
  net: ipv6: fix TCP early demux
  net: Use PTR_RET rather than if(IS_ERR(.. [1]
  net_sched: act: Delete estimator in error path.
  ip: fix error handling in ip_finish_output2()
  llc: free the right skb
  ixp4xx_eth: fix ptp_ixp46x build failure
  drivers/atm/iphase.c: fix error return code
  tcp_output: fix sparse warning for tcp_wfree
  drivers/net/phy/mdio-mux-gpio.c: drop devm_kfree of devm_kzalloc'd data
  batman-adv: select an internet gateway if none was chosen
  mISDN: Bugfix for layer2 fixed TEI mode
  igb: don't break user visible strings over multiple lines in igb_ethtool.c
  igb: correct hardware type (i210/i211) check in igb_loopback_test()
  igb: Fix for failure to init on some 82576 devices.
  cris: fix eth_v10.c build error
  cdc-ncm: tag Ericsson WWAN devices (eg F5521gw) with FLAG_WWAN
  isdnloop: fix and simplify isdnloop_init()
  hyperv: Move wait completion msg code into rndis_filter_halt_device()
  net/mlx4_core: Remove port type restrictions
  net/mlx4_en: Fixing TX queue stop/wake flow
  ...

12 years agoMerge tag 'pinctrl-fixes-for-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 8 Aug 2012 17:04:40 +0000 (20:04 +0300)]
Merge tag 'pinctrl-fixes-for-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pinctrl fixes from Linus Walleij:
 - Move MXS pinctrl registration to poscore_initcall
 - Fix up various devm_* managed resources code paths
 - Fix one function group in the Nomadik driver
 - Update MAINTAINERS

* tag 'pinctrl-fixes-for-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  drivers/pinctrl/pinctrl-nomadik.c: drop devm_kfree of devm_kzalloc'd data
  MAINTAINERS: fix a few pinctrl related entries
  pinctrl-sirf: remove devm_kfree at error path
  pinctrl/nomadik: fix hsi function group list
  pinctrl/pinctrl-u300: remove unneeded devm_kfree call
  pinctrl: mxs: register driver at postcore_initcall time

12 years agoMerge tag 'iommu-fixes-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 8 Aug 2012 17:01:45 +0000 (20:01 +0300)]
Merge tag 'iommu-fixes-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU fixes from Joerg Roedel:
 "These patches fix a couple of issues.  First of all a few problems
  with ACS on x86 introduced in the last merge window, where ACS did not
  work on AMD and a NULL pointer dereference when there ran against
  SR-IOV devices.

  The patches fallen out of coccinelle checks fix a possible invalid
  memory reference and a possible memory leak.  The other patches mostly
  fix build errors and warnings and a wrong return value."

* tag 'iommu-fixes-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/amd: Fix ACS path checking
  iommu/intel: Fix ACS path checking
  iommu/amd: Fix pci_request_acs() call-place
  iommu/exynos: Fix build error
  iommu/tegra: smmu: Fix error initial value at domain_init
  iommu/tegra: smmu: Cleanup with lesser nest
  iommu: Add missing forward declaration in include file
  iommu: Include linux/types.h
  iommu/intel: add missing free_domain_mem
  iommu/tegra: remove invalid reference to list iterator variable

12 years agoMerge tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Wed, 8 Aug 2012 16:59:52 +0000 (19:59 +0300)]
Merge tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Containing only a few really small/trivial fixes.  The only urgent fix
  is a regression fix of HDMI codec probing, introduced in 3.6-rc1.  The
  rest are HD-audio specific fixes and a copule of minor bug fixes in
  PCM core and the old emu10k1."

* tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Fix double quirk for Quanta FL1 / Lenovo Ideapad
  ALSA: hda - Fix ugly debug prints with CONFIG_SND_VERBOSE_PRINTK=y
  ALSA: hda - remove redundant auto quirks for conexant 506x
  ALSA: hda - remove quirk for Dell Vostro 1015
  ALSA: hda - add dock support for Thinkpad X230
  ALSA: hda - Fix regression of HDMI codec probing
  ALSA: hda - add dock support for Thinkpad T430s
  ALSA: emu10k1: Avoid access to invalid pages when period=1
  ALSA: PCM: Fix possible memory leaks in the error path

12 years agoALSA: hda - Fix double quirk for Quanta FL1 / Lenovo Ideapad
David Henningsson [Wed, 8 Aug 2012 06:43:37 +0000 (08:43 +0200)]
ALSA: hda - Fix double quirk for Quanta FL1 / Lenovo Ideapad

The same ID is twice in the quirk table, so the second one is not used.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Cc: <stable@vger.kernel.org> [v3.2+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agoleds: lp8788: Fix updating scale configuration bits
Axel Lin [Wed, 1 Aug 2012 12:40:34 +0000 (20:40 +0800)]
leds: lp8788: Fix updating scale configuration bits

We need to do left shift (cfg->num + LP8788_ISINK_SCALE_OFFSET) bits for
updating scale configuration.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Tested-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
12 years agoALSA: hda - Fix ugly debug prints with CONFIG_SND_VERBOSE_PRINTK=y
Takashi Iwai [Tue, 7 Aug 2012 16:09:23 +0000 (18:09 +0200)]
ALSA: hda - Fix ugly debug prints with CONFIG_SND_VERBOSE_PRINTK=y

When CONFIG_SND_VERBOSE_PRINTK=y is set, the debug print in
hda_auto_parser.c looks really ugly like:

  ALSA sound/pci/hda/hda_auto_parser.c:331    mono: mono_out=0x0
  ALSA sound/pci/hda/hda_auto_parser.c:334    dig-out=0x12/0x0
  ALSA sound/pci/hda/hda_auto_parser.c:335    inputs:
  ALSA sound/pci/hda/hda_auto_parser.c:339  Mic=0x11ALSA sound/pci/hda/hda_auto_parser.c:339  Line=0x10
  ALSA sound/pci/hda/hda_auto_parser.c:341
  ALSA sound/pci/hda/hda_auto_parser.c:343    dig-in=0x13

Better to put one item at each line.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agodrivers/pinctrl/pinctrl-nomadik.c: drop devm_kfree of devm_kzalloc'd data
Julia Lawall [Sat, 4 Aug 2012 16:50:47 +0000 (18:50 +0200)]
drivers/pinctrl/pinctrl-nomadik.c: drop devm_kfree of devm_kzalloc'd data

devm_kfree should not have to be explicitly used.

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,d;
@@

x = devm_kzalloc(...)
...
?-devm_kfree(d,x);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
12 years agoMAINTAINERS: fix a few pinctrl related entries
Uwe Kleine-König [Mon, 30 Jul 2012 16:38:34 +0000 (18:38 +0200)]
MAINTAINERS: fix a few pinctrl related entries

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
12 years agopinctrl-sirf: remove devm_kfree at error path
Devendra Naga [Sun, 29 Jul 2012 08:11:38 +0000 (13:56 +0545)]
pinctrl-sirf: remove devm_kfree at error path

the pointers that are allocated with devm_kzalloc will be automatically freed,
at unload time.

Signed-off-by: Devendra Naga <develkernel412222@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
12 years agoALSA: hda - remove redundant auto quirks for conexant 506x
David Henningsson [Tue, 7 Aug 2012 12:03:30 +0000 (14:03 +0200)]
ALSA: hda - remove redundant auto quirks for conexant 506x

Now that the auto model is the default, these quirks are redundant
and can be removed.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agoALSA: hda - remove quirk for Dell Vostro 1015
David Henningsson [Tue, 7 Aug 2012 12:03:29 +0000 (14:03 +0200)]
ALSA: hda - remove quirk for Dell Vostro 1015

This computer is confirmed working with model=auto on kernel 3.2.
Also, parsing fails with hda-emu with the current model.

Cc: stable@kernel.org (3.2+)
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agopinctrl/nomadik: fix hsi function group list
Patrice Chotard [Tue, 31 Jul 2012 12:57:38 +0000 (14:57 +0200)]
pinctrl/nomadik: fix hsi function group list

Tidy up a small typo in the HSI function group list.

Signed-off-by: Patrice Chotard <patrice.chotard@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
12 years agoMerge tag 'imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes
Arnd Bergmann [Tue, 7 Aug 2012 09:22:14 +0000 (11:22 +0200)]
Merge tag 'imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes

ARM i.MX fixes for 3.6-rc

* tag 'imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6:
  i.MX27: Fix emma-prp and csi clocks.
  ARM: clk-imx31: Fix the keypad clock name
  ARM: dts: imx27-3ds.dts: Fix serial console node

12 years agoARM: kirkwood: fix typo in Makefile.boot
Sebastian Hesselbarth [Sun, 5 Aug 2012 14:45:32 +0000 (16:45 +0200)]
ARM: kirkwood: fix typo in Makefile.boot

Just a small typo fix to make lsxl dtbs compile

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@googlemail.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agocanfd: remove redundant CAN FD flag
Oliver Hartkopp [Mon, 6 Aug 2012 16:02:29 +0000 (18:02 +0200)]
canfd: remove redundant CAN FD flag

The first idea of the CAN FD implementation started with a new struct
canfd_frame to be used for both CAN FD frames and legacy CAN frames.
The now mainlined implementation supports both CAN frame types simultaneously
and distinguishes them only by their required sizes: CAN_MTU and CANFD_MTU.

Only the struct canfd_frame contains a flags element which is needed for the
additional CAN FD information. As CAN FD implicitly means that the 'Extened
Data Length' mode is enabled the formerly defined CANFD_EDL bit became
redundant and also confusing as an unset bit would be an error and would
always need to be tested.

This patch removes the obsolete CANFD_EDL bit and clarifies the documentation
for the use of struct canfd_frame and the CAN FD relevant flags.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
12 years agoigb: add delay to allow igb loopback test to succeed on 8086:10c9
Stefan Assmann [Tue, 7 Aug 2012 07:45:57 +0000 (00:45 -0700)]
igb: add delay to allow igb loopback test to succeed on 8086:10c9

Some 8086:10c9 NICs have a problem completing the ethtool loopback test.
The result looks like this:

ethtool -t eth1
The test result is FAIL
The test extra info:
Register test  (offline)         0
Eeprom test    (offline)         0
Interrupt test (offline)         0
Loopback test  (offline)         13
Link test   (on/offline)         0

A bisect clearly points to commit a95a07445ee97a2fef65befafbadcc30ca1bd145.
However that seems to only trigger the bug. While adding some printk the
problem disappeared, so this might be a timing issue. After some trial and
error I discovered that adding a small delay just before igb_write_phy_reg()
in igb_integrated_phy_loopback() allows the loopback test to succeed.
I was unable to figure out the root cause so far but I expect it to be
somewhere in the following executing path
igb_integrated_phy_loopback
->igb_write_phy_reg_igp
  ->igb_write_phy_reg_mdic
    ->igb_acquire_phy_82575
      ->igb_acquire_swfw_sync_82575

The problem could only be observed on 8086:10c9 NICs so far and not all
of them show the behaviour. I did not restrict the workaround to this
type of NIC as it should do no harm to other igb NICs.

With the patch below the loopback test succeeded 500 times in a row
using a NIC that would otherwise fail.

Signed-off-by: Stefan Assmann <sassmann@kpanic.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
12 years agoe1000e: 82571 Tx Data Corruption during Tx hang recovery
Tushar Dave [Wed, 1 Aug 2012 02:11:15 +0000 (02:11 +0000)]
e1000e: 82571 Tx Data Corruption during Tx hang recovery

A bus trace shows that while executing e1000e_down, TCTL is cleared except
for the PSP bit.  This occurs while in the middle of fetching a TSO packet
since the Tx packet buffer is full at that point. Before the device is
reset, the e1000_watchdog_task starts to run from the middle (it was
apparently pre-empted earlier, although that is not in the trace) and sets
TCTL.EN.  At that point, 82571 transmits the corrupted packet, apparently
because TCTL.MULR was cleared in the middle of fetching a packet, which is
forbidden.

Driver should just clear TCTL.EN in e1000_reset_hw_82571 instead of
clearing the entire register, so as not to change any settings in the
middle of fetching a packet.

Signed-off-by: Tushar Dave <tushar.n.dave@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
12 years agoe1000e: NIC goes up and immediately goes down
Tushar Dave [Tue, 31 Jul 2012 02:02:43 +0000 (02:02 +0000)]
e1000e: NIC goes up and immediately goes down

Found that commit d478eb44 was a bad commit.
If the link partner is transmitting codeword (even if NULL codeword),
then the RXCW.C bit will be set so check for RXCW.CW is unnecessary.
Ref: RH BZ 840642

Reported-by: Fabio Futigami <ffutigam@redhat.com>
Signed-off-by: Tushar Dave <tushar.n.dave@intel.com>
CC: Marcelo Ricardo Leitner <mleitner@redhat.com>
CC: stable <stable@vger.kernel.org> [2.6.38+]
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
12 years agoi.MX27: Fix emma-prp and csi clocks.
Javier Martin [Thu, 26 Jul 2012 11:20:34 +0000 (13:20 +0200)]
i.MX27: Fix emma-prp and csi clocks.

Naming of emma-prp related clocks for the i.MX27 is not correct.

Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
12 years agodrivers/gpio/gpio-langwell.c: fix error return code
Julia Lawall [Sun, 5 Aug 2012 09:52:34 +0000 (11:52 +0200)]
drivers/gpio/gpio-langwell.c: fix error return code

Convert a 0 error return code to a negative one, as returned elsewhere in the
function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier ret;
expression e,e1,e2,e3,e4,x;
@@

(
if (\(ret != 0\|ret < 0\) || ...) { ... return ...; }
|
ret = 0
)
... when != ret = e1
*x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...);
... when != x = e2
    when != ret = e3
*if (x == NULL || ...)
{
  ... when != ret = e4
*  return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
12 years agogpio: samsung: Fix off-by-one bug in gpio addresses
Sean Paul [Fri, 20 Jul 2012 20:58:59 +0000 (13:58 -0700)]
gpio: samsung: Fix off-by-one bug in gpio addresses

Move gpc4 to the end of the automatically processed gpio controllers so
we don't taint the automatic offset calculation.

This bug caused all controllers coming after gpc4 to map to the
incorrect address. The result is <&gpd1 0 0 0 0> would actually map to
GPIO 0 in gpd0.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Doug Anderson <dianders@chromium.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
12 years agoARM: dts: imx: add alias for gpio
Shawn Guo [Sun, 5 Aug 2012 06:01:28 +0000 (14:01 +0800)]
ARM: dts: imx: add alias for gpio

Add alias for gpio nodes, so that gpio driver can identify the port
number and then specify a sensible gpio base rather than using the
one dynamically allocated by gpio core.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
12 years agogpio/mxc: specify gpio base for device tree probe
Shawn Guo [Sun, 5 Aug 2012 06:01:26 +0000 (14:01 +0800)]
gpio/mxc: specify gpio base for device tree probe

Currently, unlike the non-DT probe where the gpio base is specified
with pdev->id, the DT probe uses the base dynamically allocated by
gpio core, which uses a completely different numbering scheme.  This
causes two issues to user space applications which access sysfs entry
/sys/class/gpio/gpioN.

* It breaks the compatibility with user space applications between
  non-DT and DT kernels.

* It's not intuitive and sometimes hard for users to map the Linux
  gpio number to the actual hardware pin.

Use alias to identify the gpio port/bank, and then the gpio base
can be specified with port id to solve above issues.  If alias is not
defined in device tree, the base number dynamically allocated by gpio
core will be used.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
12 years agogpio/mxc: remove redundant shadow variables initialization
Shawn Guo [Sun, 5 Aug 2012 06:01:25 +0000 (14:01 +0800)]
gpio/mxc: remove redundant shadow variables initialization

With commit 3e11f7b (gpio/generic: initialize basic_mmio_gpio shadow
variables properly) in place, the shadow variables initialization is
being done in generic driver bgpio_init call.

Remove the redundant shadow variables initialization from gpio-mxc
driver.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
12 years agoALSA: hda - add dock support for Thinkpad X230
Felix Kaechele [Mon, 6 Aug 2012 21:02:01 +0000 (23:02 +0200)]
ALSA: hda - add dock support for Thinkpad X230

As with the ThinkPad Models X230 Tablet and T530 the X230 needs a qurik to
correctly set up the pins for the dock port.

Signed-off-by: Felix Kaechele <felix@fetzig.org>
Cc: <stable@vger.kernel.org> [v3.2+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agonet: ipv6: fix TCP early demux
Eric Dumazet [Mon, 6 Aug 2012 05:09:33 +0000 (05:09 +0000)]
net: ipv6: fix TCP early demux

IPv6 needs a cookie in dst_check() call.

We need to add rx_dst_cookie and provide a family independent
sk_rx_dst_set(sk, skb) method to properly support IPv6 TCP early demux.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: Use PTR_RET rather than if(IS_ERR(.. [1]
Thomas Meyer [Mon, 6 Aug 2012 07:51:16 +0000 (07:51 +0000)]
net: Use PTR_RET rather than if(IS_ERR(.. [1]

The semantic patch that makes this change is available
in scripts/coccinelle/api/ptr_ret.cocci.

More information about semantic patching is available at
http://coccinelle.lip6.fr/

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: David S. Miller <davem@davemloft.net>