Commit graph

401178 commits

Author SHA1 Message Date
Sebastian Andrzej Siewior
1e378a6d77 dma: cppi41: redo descriptor collection in abort case
Most of the logic here is try and error since what actually happens does
not match the trm or I miss read it.
My first assumption was that the queue on which the tear-down descriptor
completes (their own complete queue vs "active descriptor" complete
queue) depends on the transfer direction. This seems not to be true
because I manage to trigger
|  WARN_ON(c->desc_phys != desc_phys);
and the other few were fine means the tear-down descriptor was valid but
on different queue.

This patch changes the logic here to look on both queues for the
descriptor.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-11-12 14:28:24 +05:30
Daniel Mack
706ff628f0 dma: cppi41: use cppi41_pop_desc() where possible
Use cppi41_pop_desc() when appropriate instead of open-coding the same
functionality again. That makes the code more readable. The function has
to be moved some lines up for this change.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-11-12 14:28:24 +05:30
Daniel Mack
f8964968ab dma: cppi41: restore more registers
With active users over suspend/resume cycles, it turns out that
more registers, in particular DMA_TDFDQ and RXHPCRA0, have to be
restored on resume.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-11-12 14:28:24 +05:30
Sebastian Andrzej Siewior
262093791b fix missing edma changes to EDMA_DMA_COMPLETE status
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-11-12 10:12:52 +05:30
Joel Fernandes
50a9c70714 dma: edma: Add support for Cyclic DMA
Using the PaRAM configuration function that we split for reuse by the
different DMA types, we implement Cyclic DMA support.
For the cyclic case, we pass different configuration parameters to this
function, and handle all the Cyclic-specific functionality separately.

Callbacks to the DMA users are handled using vchan_cyclic_callback in
the virt-dma layer. Linking is handled the same way as the slave SG case
except for the last slot where we link it back to the first one in a
cyclic fashion.

For continuity, we check for cases where no.of periods is great than the
MAX number of slots the driver can allocate for a particular descriptor
and error out on such cases.

Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-11-12 09:17:14 +05:30
Vinod Koul
6b327a028f Merge branch 'for-linus' into next 2013-10-31 22:36:13 +05:30
Vinod Koul
f8d9f628e1 Merge branch 'dma_complete' into next 2013-10-31 22:36:01 +05:30
Michal Simek
600d525869 dma: pl330: Remove unnecessary amba_set_drvdata()
Driver core clears the driver data to NULL after device_release
or on probe failure, so just remove it from here.

Driver core change:
"device-core: Ensure drvdata = NULL when no driver is bound"
(sha1: 0998d06310)

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-31 19:54:10 +05:30
Russell King
ac806a1c88 dmaengine: imx-dma: fix format warnings
drivers/dma/imx-dma.c:575:3: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t'
drivers/dma/imx-dma.c:575:3: warning: format '%x' expects argument of type 'unsigned int', but argument 7 has type 'dma_addr_t'
drivers/dma/imx-dma.c:589:4: warning: format '%x' expects argument of type 'unsigned int', but argument 9 has type 'dma_addr_t'
drivers/dma/imx-dma.c:599:4: warning: format '%x' expects argument of type 'unsigned int', but argument 9 has type 'dma_addr_t'
drivers/dma/imx-dma.c:929:2: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t'
drivers/dma/imx-dma.c:929:2: warning: format '%x' expects argument of type 'unsigned int', but argument 7 has type 'dma_addr_t'
drivers/dma/imx-dma.c:959:2: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t'
drivers/dma/imx-dma.c:959:2: warning: format '%x' expects argument of type 'unsigned int', but argument 7 has type 'dma_addr_t'

We can't use the %pa format for these because this relates to phys_addr_t,
and dma_addr_t can be a different size.  So, fix these by converting them
to %llx and casting the dma_addr_t to always be unsigned long long.

While we're here, also use %zu for size_t.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-31 19:06:22 +05:30
Vinod Koul
db60d8da8f dmanengine: fix edma driver to not define DMA_COMPLETE
edma header defines DMA_COMPLETE, this causes issues as commit adfedd9a32 move
DMA_SUCCESS to DMA_COMPLETE. edma should properly namespace its defines and
needs a future fix

Reported-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-30 18:27:56 +05:30
Vinod Koul
f0dad6e701 Merge branch 'dma_complete' into next 2013-10-30 15:42:19 +05:30
Vinod Koul
b967aecf17 Merge branch 'for-linus' into next
Conflicts:
	drivers/dma/edma.c
Moved the memory leak fix post merge

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-30 13:07:18 +05:30
Linus Torvalds
959f58544b Linux 3.12-rc7 2013-10-27 16:12:03 -07:00
Linus Torvalds
a2ff82065b Merge branch 'parisc-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fix from Helge Deller:
 "This is a 2-line patch to save the CPU register which holds our task
  thread info pointer before calling a firmware function and then to
  restore it again afterwards.

  This is necessary because on some 64bit machines the high-order 32bits
  are being clobbered by the firmware call, and thus we failed to bring
  up secondary CPUs (and instead crashed the kernel) in some situations
  eg if we had more than 4GB RAM.  This patch fixes a bug which has been
  since ever in the parisc linux kernel and which prevented some people
  to use a 64bit kernel"

* 'parisc-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Do not crash 64bit SMP kernels on machines with >= 4GB RAM
2013-10-27 10:45:00 -07:00
Linus Torvalds
aff22d3f1a Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Ingo Molnar:
 "This tree contains a clockevents regression fix for certain ARM
  subarchitectures"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clockevents: Sanitize ticks to nsec conversion
2013-10-27 10:29:25 -07:00
Linus Torvalds
e2756f5e0f Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "The tree contains three fixes:

   - Two tooling fixes

   - Reversal of the new 'MMAP2' extended mmap record ABI, introduced in
     this merge window.  (Patches were proposed to fix it but it was all
     a bit late and we felt it's safer to just delay the ABI one more
     kernel release and do it right)"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf: Disable PERF_RECORD_MMAP2 support
  perf scripting perl: Fix build error on Fedora 12
  perf probe: Fix to initialize fname always before use it
2013-10-27 10:28:35 -07:00
Linus Torvalds
1c99ca43a4 Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Ingo Molnar:
 "This tree fixes a boot crash in CONFIG_DEBUG_MUTEXES=y kernels, on
  kernels built with GCC 3.x (there are still such distros)"

Side note: it's not just a fix for old gcc versions, it's also removing
an incredibly broken/subtle check that LLVM had issues with, and that
made no sense.

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  mutex: Avoid gcc version dependent __builtin_constant_p() usage
2013-10-27 10:18:15 -07:00
Linus Torvalds
acda24c47e Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target fixes from Nicholas Bellinger:
 "Here are the outstanding target pending fixes for v3.12-rc7.

  This includes a number of EXTENDED_COPY related fixes as a result of
  Thomas and Doug's continuing testing and feedback.

  Also included is an important vhost/scsi fix that addresses a long
  standing issue where the 'write' parameter for get_user_pages_fast()
  was incorrectly set for virtio-scsi WRITEs -> DMA_TO_DEVICE, and not
  for virtio-scsi READs -> DMA_FROM_DEVICE.

  This resulted in random userspace segfaults and other unpleasantness
  on KVM host, and unfortunately has been an issue since the initial
  merge of vhost/scsi in v3.6.  This patch is CC'ed to stable, along
  with two other less critical items"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  vhost/scsi: Fix incorrect usage of get_user_pages_fast write parameter
  target/pscsi: fix return value check
  target: Fail XCOPY for non matching source + destination block_size
  target: Generate failure for XCOPY I/O with non-zero scsi_status
  target: Add missing XCOPY I/O operation sense_buffer
  iser-target: check device before dereferencing its variable
  target: Return an error for WRITE SAME with ANCHOR==1
  target: Fix assignment of LUN in tracepoints
  target: Reject EXTENDED_COPY when emulate_3pc is disabled
  target: Allow non zero ListID in EXTENDED_COPY parameter list
  target: Make target_do_xcopy failures return INVALID_PARAMETER_LIST
2013-10-27 10:16:33 -07:00
Linus Torvalds
63e656083d Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine fixes from Vinod Koul:
 "Here is the late fixes pull request for dmaengine while you fly back
  from KS.

  We have a new dmaengine ML hosted by vger so a patch for that along
  with addition of Dave as driver mainatainer for ioat.  Other fixes are
  memeory leak fixes on edma driver, small fixes on rcar-hpbdma driver
  by Sergei"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: edma: fix another memory leak
  dma: edma: Fix memory leak
  MAINTAINERS: add to ioatdma maintainer list
  MAINTAINERS: add the new dmaengine mailing list
2013-10-27 10:13:03 -07:00
Helge Deller
54e181e073 parisc: Do not crash 64bit SMP kernels on machines with >= 4GB RAM
Since the beginning of the parisc-linux port, sometimes 64bit SMP kernels were
not able to bring up other CPUs than the monarch CPU and instead crashed the
kernel.  The reason was unclear, esp. since it involved various machines (e.g.
J5600, J6750 and SuperDome). Testing showed, that those crashes didn't happened
when less than 4GB were installed, or if a 32bit Linux kernel was booted.

In the end, the fix for those SMP problems is trivial:
During the early phase of the initialization of the CPUs, including the monarch
CPU, the PDC_PSW firmware function to enable WIDE (=64bit) mode is called.
It's documented that this firmware function may clobber various registers, and
one one of those possibly clobbered registers is %cr30 which holds the task
thread info pointer.

Now, if %cr30 would always have been clobbered, then this bug would have been
detected much earlier. But lots of testing finally showed, that - at least for
%cr30 - on some machines only the upper 32bits of the 64bit register suddenly
turned zero after the firmware call.

So, after finding the root cause, the explanation for the various crashes
became clear:
- On 32bit SMP Linux kernels all upper 32bit were zero, so we didn't faced this
  problem.
- Monarch CPUs in 64bit mode always booted sucessfully, because the inital task
  thread info pointer was below 4GB.
- Secondary CPUs booted sucessfully on machines with less than 4GB RAM because
  the upper 32bit were zero anyay.
- Secondary CPus failed to boot if we had more than 4GB RAM and the task thread
  info pointer was located above the 4GB boundary.

Finally, the patch to fix this problem is trivial by saving the %cr30 register
before the firmware call and restoring it afterwards.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: <stable@vger.kernel.org> # 2.6.12+
Signed-off-by: Helge Deller <deller@gmx.de>
2013-10-27 15:58:44 +01:00
Linus Torvalds
20582e34c8 ACPI and power management fixes for 3.12-rc7
- Fix for rounding errors in intel_pstate causing CPU utilization to
    be underestimated from Brennan Shacklett.
 
  - intel_pstate fix to always use the correct max pstate value when
    computing the min pstate from Dirk Brandewie.
 
  - Hibernation fix for deadlocking resume in cases when the probing
    of the device containing the image is deferred from Russ Dill.
 
  - acpi-cpufreq fix to prevent the module from staying in memory
    when the driver cannot be registered and then attempting to
    unregister things that have never been registered on exit.
 
 /
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.19 (GNU/Linux)
 
 iQIcBAABCAAGBQJSatHPAAoJEILEb/54YlRxGrYP/0VplYzQX/CqDwO/folY1wiJ
 nASYG0ZhMR7wKTr75PF/9bSoTvftk+KGbx8i48DGFXsc1a8e4lCA878zu1debH0x
 +oi+qNlrRvNgwr0Eg7ALuM68zxG+b/D8vqHRqlXcnDa+rMlS/8q/l8d/D8rou49O
 pERPWLF0LI2kdRxmeOzvqo8oA1KnhUvN/nPvtFKB7LwcQU+9iY3RMAJa2i6K/zsn
 Epq76aePKz98KB6U9LZIqzshe6AQQanFr0+kz/6dHXArygVfh7+ZpByRIYcH67KK
 iR8N6O02Fq06dVLIu3Ta5Lqq5/EWBVfauLcMBTwZ2LxmZsPGUqPac02X3HpGcB3+
 1R0zWGmKpsTcs9hUGaCp9Qs2IzQvopcbnjZ6YxMkDtfZip+2FI1aaHapRT1egl8B
 xV3Yd0ZqqyAUs50tneQE9AMQ8ndae6t8gK8c3Z+EZTF0cSBuz9puQkRBGc+RdGDs
 TTaKBbgI+TY5uws6VVWEijKkQjzCsVWM+n6yW8GlRmqrpBO/yAkuw0cBB5PXnrw0
 uoSqw3+XLFrsVzeJ7V/Zi0+jpCq9qOBubO88j9EMX7tmL1xDPLECWeztAAwiFy9C
 Vwapn6qygPV5nfnMu+zDyMe/gcKcGbXmYactaLKDap0FMsRVFDY/YikN5PeJFwJF
 gLbn26BQxHcKNNUFAYr+
 =PsHF
 -----END PGP SIGNATURE-----

Merge tag 'pm+acpi-3.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from
 "These fix two bugs in the intel_pstate driver, a hibernate bug leading
  to nasty resume failures sometimes and acpi-cpufreq initialization bug
  that causes problems to happen during module unload when intel_pstate
  is in use.

  Specifics:

   - Fix for rounding errors in intel_pstate causing CPU utilization to
     be underestimated from Brennan Shacklett.

   - intel_pstate fix to always use the correct max pstate value when
     computing the min pstate from Dirk Brandewie.

   - Hibernation fix for deadlocking resume in cases when the probing of
     the device containing the image is deferred from Russ Dill.

   - acpi-cpufreq fix to prevent the module from staying in memory when
     the driver cannot be registered and then attempting to unregister
     things that have never been registered on exit"

* tag 'pm+acpi-3.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  acpi-cpufreq: Fail initialization if driver cannot be registered
  PM / hibernate: Move software_resume to late_initcall_sync
  intel_pstate: Correct calculation of min pstate value
  intel_pstate: Improve accuracy by not truncating until final result
2013-10-26 04:38:47 +01:00
Linus Torvalds
d255c59aab A few more last-minute regression fixes, prepared jointly by me and David
Woodhouse:
 
 * Revert pxa3xx to its old name to avoid breaking existing 'mtdparts=' boot
   strings.
 
 * Return GPMI NAND to its legacy ECC layout for backwards compatibility. We
   will revisit this in 3.13.
 
 A note from David on the latter fix: "This leaves a harmless cosmetic warning
 about an unused function. At this point in the cycle I really don't care."
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.10 (GNU/Linux)
 
 iQIcBAABAgAGBQJSaqh8AAoJEFySrpd9RFgtMh4P/2vl/DUnDAjawWmsBs0kwTH2
 e3/gy1msBQoBNZBQ5VBSw3woIKrfEyrgr/mZWYhPR5N/h1UhWHVySbITJ5m86ABz
 hCfgLiA7hUs36qP3zmezOS/eqyiVMasRDeeudC+sVIrVItJjbIRhw54DLaKyilKx
 F6bFGXBG2bsgI0m2/ZDARL5CzgF/B/DE6uwBvbjPBxBgTB2ATql+bO8J5CQwF4i+
 VGPDfRjCClJg93G/KQBaiABvgReNhNHDAPTj2VLGOUhynZ4faAaak7jdWMHvxUqZ
 JkcnIqewCRvAxRDja9LwU4UiNRRT34e631o3kqDSu86CH8qC1ioCQ8r0F9ISPyV8
 bzw3spVmrvrm/O2NDnykX1FR+YJkIsaSqD77YAib/FxRDNRd/Ihgxd+r/EaMXJY4
 o/vXlPvEw9xa85j24p0P3t0otzTR8N4HtMYO4ggZL/iZ85iVl2qi7++Q5VjEfloR
 ePnE9w7qwXsyGmJQC0PCadW8vtye1AwzRVSCIM0hu11vZj+/26Q4IlIcH6Xn1g68
 yW7fUse6pcBEVJz+xyndNhWHXEwQBkmIIGNgUJs7stvbLPfaXEnmK52v0JWcoQZ+
 3tPVQBER7AqdCHBaRvzBw4dbK+W5SiCXfVTytTlDJnyKk6n3rmNVjAZDcyp5m7K2
 OmGq40fKzIjPcmzbkzoR
 =3NKt
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-20131025' of git://git.infradead.org/linux-mtd

Pull final mtd fixes from Brian Norris:
 "A few more last-minute regression fixes, prepared jointly by me and
  David Woodhouse:

   - Revert pxa3xx to its old name to avoid breaking existing
     'mtdparts=' boot strings.

   - Return GPMI NAND to its legacy ECC layout for backwards
     compatibility.  We will revisit this in 3.13.

  A note from David on the latter fix: 'This leaves a harmless cosmetic
  warning about an unused function.  At this point in the cycle I really
  don't care.'"

* tag 'for-linus-20131025' of git://git.infradead.org/linux-mtd:
  mtd: gpmi: fix ECC regression
  mtd: nand: pxa3xx: Fix registered MTD name
2013-10-25 20:15:13 +01:00
Nicholas Bellinger
60a01f558a vhost/scsi: Fix incorrect usage of get_user_pages_fast write parameter
This patch addresses a long-standing bug where the get_user_pages_fast()
write parameter used for setting the underlying page table entry permission
bits was incorrectly set to write=1 for data_direction=DMA_TO_DEVICE, and
passed into get_user_pages_fast() via vhost_scsi_map_iov_to_sgl().

However, this parameter is intended to signal WRITEs to pinned userspace
PTEs for the virtio-scsi DMA_FROM_DEVICE -> READ payload case, and *not*
for the virtio-scsi DMA_TO_DEVICE -> WRITE payload case.

This bug would manifest itself as random process segmentation faults on
KVM host after repeated vhost starts + stops and/or with lots of vhost
endpoints + LUNs.

Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Asias He <asias@redhat.com>
Cc: <stable@vger.kernel.org> # 3.6+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-10-25 11:03:34 -07:00
Wei Yongjun
58932e96e4 target/pscsi: fix return value check
In case of error, the function scsi_host_lookup() returns NULL
pointer not ERR_PTR(). The IS_ERR() test in the return value check
should be replaced with NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-10-25 10:42:09 -07:00
Linus Torvalds
f55ac56d5e Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes (try two) from Al Viro:
 "nfsd performance regression fix + seq_file lseek(2) fix"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  seq_file: always update file->f_pos in seq_lseek()
  nfsd regression since delayed fput()
2013-10-25 18:16:47 +01:00
David Woodhouse
031e2777e0 mtd: gpmi: fix ECC regression
The "legacy" ECC layout used until 3.12-rc1 uses all the OOB area by
computing the ECC strength and ECC step size ourselves.

Commit 2febcdf84b ("mtd: gpmi: set the BCHs geometry with the ecc info")
makes the driver use the ECC info (ECC strength and ECC step size)
provided by the MTD code, and creates a different NAND ECC layout
for the BCH, and use the new ECC layout. This causes a regression:

   We can not mount the ubifs which was created by the old NAND ECC layout.

This patch fixes this issue by reverting to the legacy ECC layout.

We will probably introduce a new device-tree property to indicate that
the new ECC layout can be used. For now though, for the imminent 3.12
release, we just unconditionally revert to the 3.11 behaviour.

This leaves a harmless cosmetic warning about an unused function. At
this point in the cycle I really don't care.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Huang Shijie <b32955@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Tested-by: Marek Vasut <marex@denx.de>
2013-10-25 10:09:43 -07:00
Gu Zheng
05e16745c0 seq_file: always update file->f_pos in seq_lseek()
This issue was first pointed out by Jiaxing Wang several months ago, but no
further comments:
https://lkml.org/lkml/2013/6/29/41

As we know pread() does not change f_pos, so after pread(), file->f_pos
and m->read_pos become different. And seq_lseek() does not update file->f_pos
if offset equals to m->read_pos, so after pread() and seq_lseek()(lseek to
m->read_pos), then a subsequent read may read from a wrong position, the
following program produces the problem:

    char str1[32] = { 0 };
    char str2[32] = { 0 };
    int poffset = 10;
    int count = 20;

    /*open any seq file*/
    int fd = open("/proc/modules", O_RDONLY);

    pread(fd, str1, count, poffset);
    printf("pread:%s\n", str1);

    /*seek to where m->read_pos is*/
    lseek(fd, poffset+count, SEEK_SET);

    /*supposed to read from poffset+count, but this read from position 0*/
    read(fd, str2, count);
    printf("read:%s\n", str2);

out put:
pread:
 ck_netbios_ns 12665
read:
 nf_conntrack_netbios

/proc/modules:
nf_conntrack_netbios_ns 12665 0 - Live 0xffffffffa038b000
nf_conntrack_broadcast 12589 1 nf_conntrack_netbios_ns, Live 0xffffffffa0386000

So we always update file->f_pos to offset in seq_lseek() to fix this issue.

Signed-off-by: Jiaxing Wang <hello.wjx@gmail.com>
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-10-25 10:46:40 -04:00
Rafael J. Wysocki
75c0758137 acpi-cpufreq: Fail initialization if driver cannot be registered
Make acpi_cpufreq_init() return error codes when the driver cannot be
registered so that the module doesn't stay useless in memory and so
that acpi_cpufreq_exit() doesn't attempt to unregister things that
have never been registered when the module is unloaded.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
2013-10-25 16:22:47 +02:00
Linus Torvalds
4208c47199 ARM: SoC fixes for 3.12-rc
There's really only one bugfix in this branch, which is a fix for timers on
 the integrator platform. Since Linus Walleij is resurrecting support for
 the platform it seems valuable to get the fix into 3.12 even though the
 regression has been around a while.
 
 The rest are a handful of maintainers updates. If you prefer to hold those
 until 3.13 then just merge the first patch on the branch which is the fix.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJSakNMAAoJEIwa5zzehBx3KscQAJPKB+kZac8rFi/n/yVrJh0P
 125QnjrkzK8jIaC3u91sJxYxro54/lH272Joz/TwLWr3ppfJRshZsDZeU164+VlF
 9kgHPKGTJU//5R07uFdI29oDVoPbaCX70KaZ31Sevk8VVGsJYasaLeO0422bp4We
 xn7WXb6XySRaV1HrwIp8/TVtwvFP2zDet6A/2G8s0tmDP0Ls3pJM1BJHfDnDN5ZY
 xkrJwRO1BwJMeHpDO5Jo7i33Wvb27ORF6x31Lrs7JL/nUdge+we/VLTwElpyyTjU
 3cqpW84Mc2HLyKy3kg8339qVxQTRvWOcXY6A1yQKH/FGL8EuBu6UjfzNsrb3aQsZ
 GzrXaM0lTLTE5dSEodnKnctllJS6u4pW6HSYnaUzAD897L7gNNny/FTYq5N7zWsj
 lssFu93m/2JMY6sc//1u08cG3nPCj3R76Q/MDtG6sWOesbHw1WgPk3YRDF6IVP5R
 FEJxEeEWp/BVAXS9Na4833rDFruyfVfUxOvXkt9sBq2tb/B2dlw7em+agWJ50fQd
 JiQTJLnCJaIu7ee7+r/XtQVtTrIBhWPpB1DlTBJs/DXU4xmKGqtih0hyJD9oNkfn
 3dmfwFruJE/qaV3Y7PEI3dbBZsLY6UrQXED4+FMqD2XaOJqV0KQC35b6nXc1BNnS
 Q8NWToYnaeFAQIfakS3s
 =7MQ0
 -----END PGP SIGNATURE-----

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:
 "There's really only one bugfix in this branch, which is a fix for
  timers on the integrator platform.  Since Linus Walleij is
  resurrecting support for the platform it seems valuable to get the fix
  into 3.12 even though the regression has been around a while.

  The rest are a handful of maintainers updates.  If you prefer to hold
  those until 3.13 then just merge the first patch on the branch which
  is the fix"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  MAINTAINERS: Add maintainers entry for Rockchip SoCs
  MAINTAINERS: Tegra updates, and driver ownership
  MAINTAINERS: ARM: mvebu: add Sebastian Hesselbarth
  ARM: integrator: deactivate timer0 on the Integrator/CP
2013-10-25 11:49:23 +01:00
Linus Torvalds
88829dfe4b Two important fixes
- Fix long standing memory leak in the (rarely used) public key support
 - Fix large file corruption on 32 bit architectures
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.14 (GNU/Linux)
 
 iQIcBAABCgAGBQJSaX/HAAoJENaSAD2qAscKdpQQAI6Rvsv5y/Gj+8/9rCUnNYhw
 8YWYkOko2+cyGl6ro+nIm2nmKOuaGrjijvubOjOAe4WkMzS0EyJjku/9NT3S6KzC
 SqHC0ZeZf0jaFC9zUkUN69RY9m96Ak94HAagXO3Qm39DCSj8xijxODOVnVzkEs2x
 ylOU8OgRbD/AIDzmLxgHaOtuAmQ0GNvbVoYK6ZErVmOMENU2/67iH3OsyGD4OFpr
 Oaq1i8m7rxPmwv3QNSGhXSK6EScqs2jgM4aPWx3aG+OhYv6sGWkL8jJgPS/uSUBc
 ttD1Ou/d9yyvZPDFd9wmiHhenbCVbEdl6JAIS8zKv4NkSQ3V7AVWwAoe6JMfbREo
 U+Om7FwGLgKlZ/19+IxBMGTITuOjUkKq97vJMiYbXuWzdrZSflv5GiGGKbxchmnA
 CnfYaN1HYVcpLsbXoDTBomML7VTtbifgmY0diUJ2aJ1eTg86Gs1DXjhnuLF70Jjd
 dfuYfOKkJguuRfZ50yrpWfEQ0iOudXI1v+PrramLof33lNKWI8XeKjgDxyUrAjOZ
 UjFT639EXIRzYDIOCPZicQKdNO3BRziKi1cSnXQQp9cNTMs6/FIxK2zrQmjgqvww
 Hwj+M6czLs45lbfjQIxi3FlEAYYdXBQwrEiAu4cmt9j1bxIZnwIa7Fu0bXSxphfD
 dUo0GN7CkF45BkNvotFX
 =74EV
 -----END PGP SIGNATURE-----

Merge tag 'ecryptfs-3.12-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs

Pull ecryptfs fixes from Tyler Hicks:
 "Two important fixes
   - Fix long standing memory leak in the (rarely used) public key
     support
   - Fix large file corruption on 32 bit architectures"

* tag 'ecryptfs-3.12-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
  eCryptfs: fix 32 bit corruption issue
  ecryptfs: Fix memory leakage in keystore.c
2013-10-25 07:32:01 +01:00
Vinod Koul
7db5f7274a dmaengine: remove unused DMA_SUCCESS
after all the users are converted

Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:17:29 +05:30
Vinod Koul
27bf697083 net: use DMA_COMPLETE for dma completion status
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:21 +05:30
Vinod Koul
0b3d7d39f5 serial: sh: use DMA_COMPLETE for dma completion status
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:19 +05:30
Vinod Koul
157efa8cfa async_tx: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:18 +05:30
Vinod Koul
8f1fd11489 dmaengine: txx9: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:17 +05:30
Vinod Koul
00d696f529 dmaengine: tegra: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:16 +05:30
Vinod Koul
e2360adb4a dmaengine: ste: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:15 +05:30
Vinod Koul
a8d8d268c1 dmaengine: sh: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:14 +05:30
Vinod Koul
fdebb7681c dmaengine: sa11x0: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:13 +05:30
Vinod Koul
5738992b07 dmaengine: ppc4xx: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:12 +05:30
Vinod Koul
7cce5083b7 dmaengine: omap: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:11 +05:30
Vinod Koul
2737583ea0 dmaengine: mxs-dma: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:10 +05:30
Vinod Koul
b3efb8fc9a dmaengine: mv_xor: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:09 +05:30
Vinod Koul
f64eabd0b7 dmaengine: mmp_tdma: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Zhangfei Gao <zhangfei.gao@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:08 +05:30
Vinod Koul
bd2c348e56 dmaengine: k3dma: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:07 +05:30
Vinod Koul
9f571502d8 dmaengine: iop: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:06 +05:30
Vinod Koul
2f16f802c3 dmaengine: ioat: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:05 +05:30
Vinod Koul
94e4c120c7 dmaengine: intel_mid_dma: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:04 +05:30
Vinod Koul
409bff6a0f dmaengine: imx-sdma: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:03 +05:30
Vinod Koul
3ded1ad14f dmaengine: imx-dma: use DMA_COMPLETE for dma completion status
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-25 11:16:02 +05:30