Commit Graph

349818 Commits

Author SHA1 Message Date
Daniel Wagner
d84295067f net: net_cls: fd passed in SCM_RIGHTS datagram not set correctly
Commit 6a328d8c6f changed the update
logic for the socket but it does not update the SCM_RIGHTS update
as well. This patch is based on the net_prio fix commit

48a87cc26c

    net: netprio: fd passed in SCM_RIGHTS datagram not set correctly

    A socket fd passed in a SCM_RIGHTS datagram was not getting
    updated with the new tasks cgrp prioidx. This leaves IO on
    the socket tagged with the old tasks priority.

    To fix this add a check in the scm recvmsg path to update the
    sock cgrp prioidx with the new tasks value.

Let's apply the same fix for net_cls.

Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Reported-by: Li Zefan <lizefan@huawei.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: John Fastabend <john.r.fastabend@intel.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: netdev@vger.kernel.org
Cc: cgroups@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-22 14:17:38 -05:00
Eric Dumazet
a05948f296 netxen: fix off by one bug in netxen_release_tx_buffer()
Christoph Paasch found netxen could trigger a BUG in its dismantle
phase, in netxen_release_tx_buffer(), using full size TSO packets.

cmd_buf->frag_count includes the skb->data part, so the loop must
start at index 1 instead of 0, or else we can make an out
of bound access to cmd_buff->frag_array[MAX_SKB_FRAGS + 2]

Christoph provided the fixes in netxen_map_tx_skb() function.
In case of a dma mapping error, its better to clear the dma fields
so that we don't try to unmap them again in netxen_release_tx_buffer()

Reported-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Cc: Sony Chacko <sony.chacko@qlogic.com>
Cc: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-22 14:14:47 -05:00
Linus Torvalds
05c2cf35c3 f2fs fixes for v3.8-rc5
o Support swap file and link generic_file_remap_pages
 o Enhance the bio streaming flow and free section control
 o Major bug fix on recovery routine
 o Minor bug/warning fixes and code cleanups
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJQ/fpIAAoJEEAUqH6CSFDS6BAP/jz/JIPoSu4NunWgVH68tzA4
 xx4lsmJQJQG+1241uA9v4MMkcTzxE0QVNTOX3BpUXBhCMc00aPOPWlWjULridLI9
 0vRE6LpG+NntkyKF+M5T1ydGuQoDlEvqoGs6c5p3yaI6PxzbzmBmipsmqXUA8fyu
 280+OWJoAcALEMJiQ8JsHcDmvM9wdQ+BV/j3BNCm4dqBUA4dYPfDzRKUJYfwqiig
 qmVRseJJaekxrQ2lHG/K/WPAXa8aRcV6khP9tv/BPGRMt+I/fli/J4sWEFT6c73B
 +qYmhrf/RLNJ1O13dePlo3URwMu083PL8QN355GAKUJbMaX/UPjEnq0DLbBOkCS2
 KBQI5O1eiFauEE6YU7p7GuvnLeVkukcXSQNVnRrnWzTUA9CMThZZ2mAgb2lz+iEP
 oZWNirRwnxdcTQRXjPyTCtpPTCgJi4GO1WS5s6HeLP8G8Muo4PzDzcEwMX0Mw5ih
 s4n4wpQ+Zp3h53cc/DxdFAK15uM3XYtUfb92kJwqaEG5VmBy6KvliXDRnNXg7WMI
 imCb08c0Fr0M8ZHOd+UCveICcndFj25jkjx8w7PoE1KBbGJkKf+cjpZ3OhOAliux
 sGtH3EZLV6jx1MjV79OpDXQGoVsvktesCbRcaxc7BbqljXYVNiap8QbzjPnmAt6z
 KKN0GU32eolGgK4Zd/iF
 =vJQc
 -----END PGP SIGNATURE-----

Merge tag 'f2fs-for-3.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs fixes from Jaegeuk Kim:
 o Support swap file and link generic_file_remap_pages
 o Enhance the bio streaming flow and free section control
 o Major bug fix on recovery routine
 o Minor bug/warning fixes and code cleanups

* tag 'f2fs-for-3.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (22 commits)
  f2fs: use _safe() version of list_for_each
  f2fs: add comments of start_bidx_of_node
  f2fs: avoid issuing small bios due to several dirty node pages
  f2fs: support swapfile
  f2fs: add remap_pages as generic_file_remap_pages
  f2fs: add __init to functions in init_f2fs_fs
  f2fs: fix the debugfs entry creation path
  f2fs: add global mutex_lock to protect f2fs_stat_list
  f2fs: remove the blk_plug usage in f2fs_write_data_pages
  f2fs: avoid redundant time update for parent directory in f2fs_delete_entry
  f2fs: remove redundant call to set_blocksize in f2fs_fill_super
  f2fs: move f2fs_balance_fs to punch_hole
  f2fs: add f2fs_balance_fs in several interfaces
  f2fs: revisit the f2fs_gc flow
  f2fs: check return value during recovery
  f2fs: avoid null dereference in f2fs_acl_from_disk
  f2fs: initialize newly allocated dnode structure
  f2fs: update f2fs partition info about SIT/NAT layout
  f2fs: update f2fs document to reflect SIT/NAT layout correctly
  f2fs: remove unneeded INIT_LIST_HEAD at few places
  ...
2013-01-22 10:33:17 -08:00
Linus Torvalds
3c2a9f84e9 vfio fixes for v3.8-rc5
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIcBAABAgAGBQJQ/cZWAAoJECObm247sIsibDUP/jyFstqk8Nhg99qJvecoI7RA
 9x7IpKpV1xDQfOeQZWf+5NXQwr/OBBApEYN7VNun3rBZJxuGNKzJSnMaAJWy+8qW
 J1rNzw/O49fejECVfYBDUvEV1WC9F/zUIcGOXYcyU0ZDT/3lAC7ZzVKY1l4hWgqx
 dL3BOhPPpvgQN3otUQnGK/7sVjptjl4ks8js7GFlbmQnv86GyqjB0DBzy1/xZrFO
 E59LK8FZup3Vs3UrkI8A3Op3E6YkNiZKBkCrjduHNFHfFwjcv8vRZHYB2BJCm69j
 2HmcQWLVjZPdlkyjLgiJ10S7ZBTc/bjXZeq30cuwJalI0kcdKaD6f00qG12qZOce
 p15oXI68hXsK9JTYUHBQrbjGhIKAfkcmJQB0Q+JDF56Zi1x9LMzmQ/BK/5yq8uWQ
 Y3jm8krAuoU/Y49MiExEM2MuVh06ftHOcTICuZj2M2d2gR8mCGE7l7F7BgHmFaDc
 MdyUELJ1L6kTvqMREI8i14ZG77KEfMRnu6KI0w0kIyjUt4CApAwCfe/HpNicfP/N
 nSMbRonwm8myuEX3uPKauTxRrKklRGLlxS7LrrlawsVMki+FhxNq8vZkZfkjuFaW
 fZxgt+dj0+JsOYej6y+6+CmYA7TXcXt0svOAqCCthEVgPAkWA2RraBA3YsSW1Ste
 GnnnFaWcddPo4gB9Z70g
 =nRaP
 -----END PGP SIGNATURE-----

Merge tag 'vfio-for-v3.8-rc5' of git://github.com/awilliam/linux-vfio

Pull vfio fix from Alex Williamson.
 "vfio-pci: Fix buffer overfill"

* tag 'vfio-for-v3.8-rc5' of git://github.com/awilliam/linux-vfio:
  vfio-pci: Fix buffer overfill
2013-01-22 10:31:57 -08:00
Linus Torvalds
d26d45253b Kprobes now uses the function tracer if it can. That is, if a probe
is placed on a function mcount/nop location, and the arch supports it,
 instead of adding a breakpoint, kprobes will register a function callback
 as that is much more efficient.
 
 The function tracer requires to update modules before they run, and
 uses the module notifier to do so. But if something else in the module
 notifiers registers a kprobe at one of these locations, before ftrace
 can get to it, then the system could fail.
 
 The function tracer must be initialized early, otherwise module notifiers
 that probe will only work by chance.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQEcBAABAgAGBQJQ/ZaaAAoJEOdOSU1xswtMQsoH/02S5ngidMgIXwYCGzwxR6Ym
 f2krSz76rBkFn9ivFPJFfq2Wi05UhhVfFr4gpKzoK+/rBqwVkV5tRIQ4AhJ1/Q3d
 wCXB2mcRI6ky/kB/ts8q6gjj+rlJ18NgZf79TA5y5q7FEYc6DvB2dZ+vE+rvCnXk
 q/Bx6q4phEdLbVqet+Ga36qzi9u+pW0P+ntZmi0EQLVnz9p+mtdVaRz32qKp0FYi
 XhHtPMHQDZoOu8utPNtPcfSOZp1sNN8tXqjEAJ4/Ba54badUfg4WJ+RXGPsYH+4T
 lOwpVv7Xp0Sp2b1HivEVfCs1bx2RNzluZisPahBEwdBv+XssvqMbAfG+X3EVk3w=
 =6EYI
 -----END PGP SIGNATURE-----

Merge tag 'trace-3.8-rc4-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull ftrace fix from Steven Rostedt:
 "Kprobes now uses the function tracer if it can.  That is, if a probe
  is placed on a function mcount/nop location, and the arch supports it,
  instead of adding a breakpoint, kprobes will register a function
  callback as that is much more efficient.

  The function tracer requires to update modules before they run, and
  uses the module notifier to do so.  But if something else in the
  module notifiers registers a kprobe at one of these locations, before
  ftrace can get to it, then the system could fail.

  The function tracer must be initialized early, otherwise module
  notifiers that probe will only work by chance."

* tag 'trace-3.8-rc4-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace: Be first to run code modification on modules
2013-01-22 10:30:49 -08:00
Linus Torvalds
0944c0a034 1) ahci: Fix typo that caused erronenous error handling.
Thought:  I wonder if sparse could have caught this, somehow.
 
 2) ahci: support a slightly odd Enmotus variant
 
 3) core: fix a drive detection problem by correcting the logic
    by which the DevSlp timing variables are obtained and used.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIVAwUAUP2a/CWzCDIBeCsvAQJBhA/+JowfM2CKII3+k4Kq2UbaR+uJHALABtxh
 rRWBana8ESxoXuY6Usylkdms5fQamp3r/YB29ZzUw3nsHP4u9Y4L2+NIYryXPYll
 xNeg9tI/y2ypC8wNnXQIrbvYGH303BqyBpUTQ7qfQ+zrKq9qSg9vTBC9rbGE6YdM
 sR8gcz1wuY3eFeEw2FXHyWWnXTmB4/UmgISjJL13c9rJoQpK4k1svhUnPAqSM8RZ
 IB4z4NUne1REvpDdhyIIi5hGeOFtULMtEdjIxNuHNmQXgi6Q225qDNS4afhEQLVu
 lf6VLMYmMziNYNhyQDl1Vw82/zics01u9HOnCpfs/De+6DE4DeH9z0wG9Hz35YHZ
 6ZcSQPLVk8/Jfp2jSsovc3h51o6W3DavuJxvs9EC1gyhDpPnYPPBOgiVPkb/km1n
 hoBBIKqwFrV8MzpbUgSqlrWRlQ4Mco95l/Nwnr9mWe1CV81dYRXQ0cH2WYjveigy
 tpbKgpDiEMpmUHT9rUX5AXMdv6JczMY6mP+FGmOeBio8hG0uozaZYCczbQAX9PD4
 UFkqms0C9C/SH1k3LJWkSZaxwupCZpvEyXu1RezcJsv0qObfrbnGxtSG4lBdv0x/
 SlSMLQRG7cE9la9amEwzqhUQXbS/rPcpZ8GK+2Qjhb36qO5GJpgUUEp+izfHcy4v
 ATS8puL+GhQ=
 =7WDW
 -----END PGP SIGNATURE-----

Merge tag 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev

Pull libata fixes from Jeff Garzik:

 1) ahci: Fix typo that caused erronenous error handling.

    Thought: I wonder if sparse could have caught this, somehow.

 2) ahci: support a slightly odd Enmotus variant

 3) core: fix a drive detection problem by correcting the logic by which
    the DevSlp timing variables are obtained and used.

* tag 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  [libata] replace sata_settings with devslp_timing
  [libata] ahci: Add support for Enmotus Bobcat device.
  [libata] ahci: Fix lack of command retry after a success error handler.
2013-01-22 10:10:34 -08:00
Linus Torvalds
a7ed6c4320 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem bugfixes from James Morris.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  security/device_cgroup: lock assert fails in dev_exception_clean()
  evm: checking if removexattr is not a NULL
2013-01-22 10:10:10 -08:00
Oleg Nesterov
9067ac85d5 wake_up_process() should be never used to wakeup a TASK_STOPPED/TRACED task
wake_up_process() should never wakeup a TASK_STOPPED/TRACED task.
Change it to use TASK_NORMAL and add the WARN_ON().

TASK_ALL has no other users, probably can be killed.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-22 10:08:17 -08:00
Oleg Nesterov
9899d11f65 ptrace: ensure arch_ptrace/ptrace_request can never race with SIGKILL
putreg() assumes that the tracee is not running and pt_regs_access() can
safely play with its stack.  However a killed tracee can return from
ptrace_stop() to the low-level asm code and do RESTORE_REST, this means
that debugger can actually read/modify the kernel stack until the tracee
does SAVE_REST again.

set_task_blockstep() can race with SIGKILL too and in some sense this
race is even worse, the very fact the tracee can be woken up breaks the
logic.

As Linus suggested we can clear TASK_WAKEKILL around the arch_ptrace()
call, this ensures that nobody can ever wakeup the tracee while the
debugger looks at it.  Not only this fixes the mentioned problems, we
can do some cleanups/simplifications in arch_ptrace() paths.

Probably ptrace_unfreeze_traced() needs more callers, for example it
makes sense to make the tracee killable for oom-killer before
access_process_vm().

While at it, add the comment into may_ptrace_stop() to explain why
ptrace_stop() still can't rely on SIGKILL and signal_pending_state().

Reported-by: Salman Qazi <sqazi@google.com>
Reported-by: Suleiman Souhlal <suleiman@google.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-22 10:08:00 -08:00
Will Deacon
f1b99392ca arm64: makefile: fix uname munging when setting ARCH on native machine
By popular demand, arch/aarch64 is now known as arch/arm64. However,
uname -m (and indeed the GNU triplet) still use aarch64 as the machine
string.

This patch fixes native builds of both the kernel and perf tools by
updating the relevant Makefiles to munge the output of uname -m and
set the ARCH variable appropriately.

Cc: <stable@vger.kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-22 17:51:00 +00:00
Will Deacon
9cf2b72b25 arm64: elf: fix core dumping to match what glibc expects
The kernel's internal definition of ELF_NGREG uses struct pt_regs, which
means that we disagree with userspace on the size of coredumps since
glibc correctly uses the user-visible struct user_pt_regs.

This patch fixes our ELF_NGREG definition to use struct user_pt_regs
and introduces our own ELF_CORE_COPY_REGS to convert between the user
and kernel structure definitions.

Cc: <stable@vger.kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-01-22 17:50:59 +00:00
Alan Stern
9debc1793b USB: EHCI: add a name for the platform-private field
This patch (as1642) adds an ehci->priv field for private use by EHCI
platform drivers.  The space was provided some time ago, but it didn't
have a name.

Until now none of the platform drivers has used this private space,
but that's about to change in the next patch of this series.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-22 09:22:13 -08:00
Alan Stern
9ce45ef86c USB: EHCI: fix incorrect configuration test
This patch (as1641) fixes a minor bug in ehci-hcd left over from when
the Chipidea driver was converted to the "ehci-hcd is a library"
scheme.  The test for whether the Chipidea platform driver is active
should be IS_ENABLED(), not defined().

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-22 09:21:23 -08:00
Roger Quadros
9ec6e9d3cb USB: EHCI: Move definition of EHCI_STATS to ehci.h
Without this, platform drivers e.g. ehci-omap.c will see a
different version of struct ehci_hcd than ehci-hcd.c and
break reference to 'debug_dir' and 'priv' members when
CONFIG_USB_DEBUG is enabled.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-22 09:21:23 -08:00
Ralf Baechle
757be67f56 MIPS: Octeon: Fix warning.
Cong Ding <dinggnu@gmail.com> reports correctly that the variable dummy
is being used without initialization.  That said, I can't reproduce this
warning with GCC 4.7.1.  However, since the variable dummy servces no
real purpose, I'm going for a different fix.  This fix
includes https://patchwork.linux-mips.org/patch/4801/ plus Geert's
suggestion to use ACCESS_ONCE().

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-01-22 18:07:46 +01:00
Alan Stern
0f815a0a70 USB: UHCI: fix IRQ race during initialization
This patch (as1644) fixes a race that occurs during startup in
uhci-hcd.  If the IRQ line is shared with other devices, it's possible
for the handler routine to be called before the data structures are
fully initialized.

The problem is fixed by adding a check to the IRQ handler routine.  If
the initialization hasn't finished yet, the routine will return
immediately.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Don Zickus <dzickus@redhat.com>
Tested-by: "Huang, Adrian (ISS Linux TW)" <adrian.huang@hp.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-22 08:55:13 -08:00
Oleg Nesterov
910ffdb18a ptrace: introduce signal_wake_up_state() and ptrace_signal_wake_up()
Cleanup and preparation for the next change.

signal_wake_up(resume => true) is overused. None of ptrace/jctl callers
actually want to wakeup a TASK_WAKEKILL task, but they can't specify the
necessary mask.

Turn signal_wake_up() into signal_wake_up_state(state), reintroduce
signal_wake_up() as a trivial helper, and add ptrace_signal_wake_up()
which adds __TASK_TRACED.

This way ptrace_signal_wake_up() can work "inside" ptrace_request()
even if the tracee doesn't have the TASK_WAKEKILL bit set.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-22 08:50:08 -08:00
Lee Jones
00441b5e6b mfd: Fix compile errors and warnings when !CONFIG_AB8500_BM
drivers/mfd/ab8500-core.c:1015:21: error: ‘ab8500_bm_data’ undeclared here

include/linux/mfd/abx500/ab8500-bm.h:445:13: warning: ‘ab8500_fg_reinit’ defined but not used
include/linux/mfd/abx500/ab8500-bm.h:448:13: warning: ‘ab8500_charger_usb_state_changed’ defined but not used
include/linux/mfd/abx500/ab8500-bm.h:451:29: warning: ‘ab8500_btemp_get’ defined but not used
include/linux/mfd/abx500/ab8500-bm.h:455:12: warning: ‘ab8500_btemp_get_batctrl_temp’ defined but not used
include/linux/mfd/abx500/ab8500-bm.h:463:12: warning: ‘ab8500_fg_inst_curr_blocking’ defined but not used
include/linux/mfd/abx500/ab8500-bm.h:442:12: warning: ‘ab8500_fg_inst_curr_done’ defined but not used
include/linux/mfd/abx500/ab8500-bm.h:447:26: warning: ‘ab8500_fg_get’ defined but not used

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-01-22 17:28:44 +01:00
Guenter Roeck
a17155bc9c mfd: vexpress: Export global functions to fix build error
Compiling vexpress client drivers as module results in error messages such as

ERROR: "__vexpress_config_func_get" [drivers/hwmon/vexpress.ko] undefined!
ERROR: "vexpress_config_func_put" [drivers/hwmon/vexpress.ko] undefined!

This is because the global functions in drivers/mfd/vexpress-config.c are not
exported. Fix it.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-01-22 17:28:34 +01:00
Geert Uytterhoeven
4ea494b528 MIPS: delay.c: Check BITS_PER_LONG instead of __SIZEOF_LONG__
When building a 32-bit kernel for RBTX4927 with gcc version 4.1.2 20061115
(prerelease) (Ubuntu 4.1.1-21), I get:

arch/mips/lib/delay.c:24:5: warning: "__SIZEOF_LONG__" is not defined

As a consequence, __delay() always uses the 64-bit "dsubu" instruction.

Replace the check for "__SIZEOF_LONG__ == 4" by "BITS_PER_LONG == 32" to
fix this.

Introduced by commit 5210edcd52 [MIPS: Make
__{,n,u}delay declarations match definitions and generic delay.h"]

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Patchwork: https://patchwork.linux-mips.org/patch/4678/
Acked-by: David Daney <david.daney@cavium.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-01-22 16:53:48 +01:00
Mika Westerberg
9dd3162deb i2c-designware: add missing MODULE_LICENSE
The driver can also be built as a module so add MODULE_LICENSE for it. In
addition add MODULE_DESCRIPTION as well.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2013-01-22 16:43:34 +01:00
Jens Axboe
1383923d19 Merge branch 'for-jens' of git://git.drbd.org/linux-drbd into for-linus 2013-01-22 08:22:11 -07:00
Aaro Koskinen
9eb13cf3ec i2c: omap: fix draining irq handling
Commit 0bdfe0cb80 (i2c: omap: sanitize
exit path) changed the interrupt handler to exit early and complete
the transfer after the draining IRQ is handled. As a result, the ARDY
may not be cleared properly, and it may cause all future I2C transfers
to timeout with "timeout waiting for bus ready". This is reproducible
at least with N900 when twl4030_gpio makes a long write (> FIFO size)
during the probe (http://marc.info/?l=linux-omap&m=135818882610432&w=2).

The fix is to continue until we get ARDY interrupt that completes the
transfer. Tested with 3.8-rc4 + N900: 20 boots in a row without errors;
without the patch the problem triggers after few reboots.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2013-01-22 16:17:05 +01:00
Aaro Koskinen
2c5de558cd i2c: omap: errata i462: fix incorrect ack for arbitration lost interrupt
The errata handling function acks wrong interrupt in case of "Arbitration
lost". Fix it.

Discovered during code review, the real impact of the bug is unknown.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2013-01-22 16:17:04 +01:00
Haojian Zhuang
8b77b3762c Revert "pinctrl: single: support gpio request and free"
This reverts commit 2e8b2eab94.

Conflicts:
	drivers/pinctrl/pinctrl-single.c

ERROR: "__aeabi_uldivmod" [drivers/pinctrl/pinctrl-single.ko]
undefined!]

On Fri, Jan 11, 2013 at 4:00 PM, Russell King wrote:

> The above error happens in builds including pinctrl-single - the
> reason
> is this, where resource_size_t may be 64-bit.
>
>                 gpio->range.pin_base = (r.start - pcs->res->start) /
>                 mux_bytes;
>                 gpio->range.npins = (r.end - r.start) / mux_bytes + 1;

The reason of not fixing this issue and reverting the patch instead is
this patch can't handle another case. It's not easy to handle multiple
gpios sharing one pin register. So this gpio range feature will be
implemented by other patches.

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-01-22 13:48:07 +01:00
Stefan Bader
9855d8ce41 ACPI: Check MSR valid bit before using P-state frequencies
To fix incorrect P-state frequencies which can happen on
some AMD systems f594065faf
   "ACPI: Add fixups for AMD P-state figures"
introduced a quirk to obtain the correct values by reading
from AMD specific MSRs.

This did cause a regression when running a kernel using that
quirk under Xen which does (currently) not pass through MSR
reads to the HW. Instead the guest gets a 0 in return.
And this seems to cause a failure to initialize the ondemand
governour (hard to say for sure as all P-states appear to run
at the same frequency).

While this should also be fixed in the hypervisor (to allow
a guest to read that MSR), this patch is intended to work
around the issue in the meantime. In discussion it turned out
that indeed real HW/BIOSes may choose to not set the valid bit
and thus mark the P-state as invalid. So this could be considered
a fix for broken BIOSes that also works around the issue on Xen.

Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Cc: 3.7+ <stable@vger.kernel.org>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 13:37:21 +01:00
Gerald Schaefer
be3286507d s390/thp: implement pmdp_set_wrprotect()
On s390, an architecture-specific implementation of the function
pmdp_set_wrprotect() is missing and the generic version is currently
being used. The generic version does not flush the tlb as it would be
needed on s390 when modifying an active pmd, which can lead to subtle
tlb errors on s390 when using transparent hugepages.

This patch adds an s390-specific implementation of pmdp_set_wrprotect()
including the missing tlb flush.

Cc: stable@vger.kernel.org
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-01-22 13:32:16 +01:00
Nishanth Menon
8fa938acb3 PM / devfreq: exynos4_bus: honor RCU lock usage
OPP pointers cannot be expected to be valid beyond the boundary
of rcu_read_lock and rcu_read_unlock. Unfortunately, the current
exynos4 busfreq driver does not honor the usage constraint and stores
the OPP pointer in struct busfreq_data. This could potentially
become invalid later such as: across devfreq opp change decisions,
resulting in unpredictable behavior.

To fix this, we introduce a busfreq specific busfreq_opp_info
structure which is used to handle OPP information. OPP information
is de-referenced to voltage and frequency pairs as needed into
busfreq_opp_info structure and used as needed.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 13:28:40 +01:00
Nishanth Menon
bcb27549f4 PM / devfreq: add locking documentation for recommended_opp
OPP pointers are protected by RCU locks, the pointer validity is
permissible only under the section of rcu_read_lock to rcu_read_unlock

Add documentation to the effect.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 13:28:39 +01:00
Nishanth Menon
78e8eb8fea cpufreq: cpufreq-cpu0: use RCU locks around usage of OPP
OPP pointer is RCU protected, hence after finding it, de-reference
also should be protected with the same RCU context else the OPP
pointer may become invalid.

Reported-by: Jack Mitchell <jack@embed.me.uk>
Tested-by: Alexander Holler <holler@ahsoftware.de>
Tested-by: Jack Mitchell <jack@embed.me.uk>
Acked-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 13:28:39 +01:00
Nishanth Menon
f44d188acd cpufreq: OMAP: use RCU locks around usage of OPP
OPP pointer is RCU protected, hence after finding it, de-reference
also should be protected with the same RCU context else the OPP
pointer may become invalid.

Reported-by: Alexander Holler <holler@ahsoftware.de>
Tested-by: Alexander Holler <holler@ahsoftware.de>
Acked-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 13:28:39 +01:00
Rafael J. Wysocki
e5656271b0 ACPI / PM: Fix device power state value after transitions to D3cold
When a transition to the D3cold power state is requested,
acpi_device_set_power() first carries out a transition to D3hot and
then turns off the device's power resources.  However, it fails to
update the device's power.state field appropriately and D3hot is
stored in it as a result.

Fix this, but make sure that the device's power state will be
D3hot if its power resources cannot be turned off in the final
step.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 12:56:35 +01:00
Rafael J. Wysocki
898fee4f6e ACPI / PM: Use string "D3cold" to represent ACPI_STATE_D3_COLD
Make acpi_power_state_string() return "D3cold" as the string
representation of ACPI power state D3cold instead of "D3" returned
currently, which is confusing.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 12:56:26 +01:00
Rafael J. Wysocki
87e753b006 ACPI / PM: Sanitize checks in acpi_power_on_resources()
After the only user of acpi_power_on_resources(),
acpi_bus_init_power(), has been changed to avoid calling it
for state equal to ACPI_STATE_D3_COLD, it doesn't have to special
case that state any more.

For this reason, modify the checks in acpi_power_on_resources()
so that it returns -EINVAL for ACPI_STATE_D3_COLD as it should.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 12:56:16 +01:00
Rafael J. Wysocki
e78adb7595 ACPI / PM: Always evaluate _PSn after setting power resources
The ACPI specitication (ACPI 5, Sections 7.2.8 - 7.2.11) requires
that the _PSn (n = 0..3) method, if present, be executed after the
power resources for the given device power state have been set
appropriately.  However, acpi_device_set_power() does that only
if the new power state is going to be higher-power (lower-number)
than the power state the device is in already.  Otherwise, the
ordering is reverse to protect against situations in which _PSn
might access device registers unavailable after configuring the
power resources for power state Dn (D3 meaning D3hot).

Such situations are very unlikely to happen, though, and _PSn may
actually be implemented with the assumption that power resources
have been configured for power state Dn in advance, so change the
code to follow the specification literally.

This change was previously porposed in a different form by Lv Zheng.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 12:56:04 +01:00
Rafael J. Wysocki
9c0f45e388 ACPI / PM: Introduce helper for executing _PSn methods
To reduce code duplication between acpi_device_set_power() and
acpi_bus_init_power(), introduce a new helper function for executing
ACPI devices' _PSn (n = 0..3) methods, acpi_dev_pm_explicit_set().

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 12:55:52 +01:00
Rafael J. Wysocki
a2367807b8 ACPI / PM: Make acpi_bus_init_power() more robust
The ACPI specification requires the _PSC method to be present under
a device object if its power state cannot be inferred from the states
of power resources used by it (ACPI 5, Section 7.6.2).  However, it
also requires that (for power states D0-D2 and D3hot) if the _PSn
(n = 0, 1, 2, 3) method is present under the device object, it also
must be executed after the power resources have been set
appropriately for the device to go into power state Dn (D3 means
D3hot in this case).  Thus it is not clear from the specification
whether or not the _PSn method should be executed if the initial
configuraion of power resources used by the device indicates power
state Dn and the _PSC method is not present.

The current implementation of acpi_bus_init_power() is based on the
assumption that it should not be necessary to execute _PSn in the
above situation, but experience shows that in fact that assumption
need not be satisfied.  For this reason, make acpi_bus_init_power()
always execute _PSn if the initial configuration of device power
resources indicates power state Dn.

Reported-and-tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 12:54:38 +01:00
Ralf Baechle
f051e3a933 MIPS: PNX833x: Fix comment.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-01-22 12:52:22 +01:00
Laurent Navet
43a2bd42d0 i2c: muxes: fix wrong use of sizeof(ptr)
sizeof when applied to a pointer typed expression gives the size of
the pointer

The semantic patch that makes this output is available
in scripts/coccinelle/misc/noderef.cocci.

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

Signed-off-by: Laurent Navet <laurent.navet@gmail.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2013-01-22 09:54:32 +01:00
Barry Song
bfd059da95 i2c: sirf: register i2c_client from dt child-nodes in probe entry
in probe() entry of i2c_driver, set the of node of adapter and
call of_i2c_register_devices to register all i2c_client from
dt child-nodes

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2013-01-22 09:54:31 +01:00
Fabio Estevam
0f40cbc4f8 i2c: mxs: Fix type of error code
cmd_err is used to handle error code, so it should not be unsigned.

This fixes the following warning when building with W=1 option:

drivers/i2c/busses/i2c-mxs.c: In function 'mxs_i2c_xfer_msg':
drivers/i2c/busses/i2c-mxs.c:331:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: stable@kernel.org
2013-01-22 09:54:23 +01:00
Mark Brown
a8c136d2eb Merge remote-tracking branch 'asoc/fix/wm2200' into tmp 2013-01-22 16:26:33 +08:00
Mark Brown
e51ff2b64b Merge remote-tracking branch 'asoc/fix/lrg' into tmp 2013-01-22 16:26:24 +08:00
Mark Brown
32eca984f6 Merge remote-tracking branch 'asoc/fix/fsl' into tmp 2013-01-22 16:26:21 +08:00
Mark Brown
05780d7771 Merge remote-tracking branch 'asoc/fix/core' into tmp 2013-01-22 16:26:15 +08:00
Mark Brown
bc04c93bbc Merge remote-tracking branch 'asoc/fix/arizona' into tmp 2013-01-22 16:26:06 +08:00
Nestor Ovroy
31b35e9edd regmap: fix small typo in regmap_bulk_write comment
Signed-off-by: Nestor Ovroy <novroy@riseup.net>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-22 16:24:12 +08:00
Olof Johansson
b2555b877b ARM i.MX fixes for -rc.
This contains a single compilation fix for the CODA driver.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIcBAABCAAGBQJQ/kpBAAoJEPFlmONMx+ezojIP/16dVFJtilf5YIMYeKVjyiwE
 6wabDdTZK7IMWvESfUZ3Lw9jT8Ean6F0TXSOrQ3aACKUh8w4tx5syvbrH5zOLC9R
 DjsnATY34z4fiMoE2azw+21nVd6RwV8yxZCF6Zn70yJL0oEQuL3vztdnhwhuHxW6
 1We87uq7rSALmkXy26oXsrLo/J8wb8V+xlgGXnWQDMtaYVkf/5vNSAXttEkhid5d
 mByHfB7CZxZ2jMPNyXFEjWwEqAZGyPWOuTDJnFYYV1p8HMej2eqORapacx6dOUNX
 u2Tu+xHLSBEZ64ouHE6E5XxcNYeT1CGkZ8xUL/NzGgGdwySKqA8sFFKduBkFMmWe
 Kd5b1aICLpXtAmNaALXe9s2ANiNpLY2MegYBsltQaKs1/WFE/1eJ518fiS3eOJWA
 asWR8wmxxXLATaOztmB4UQ8jR22sUuAdFYLDpM9AN9I6JKi3flb7/oxLGE6NEUcH
 BX7lopuGifSbYZbHr9rurAkFkF0KGVZtq9xo4Z+dy69IYSrwfYK82PUh5UYaRcoy
 dx51TFB4Nhh7XBlFAzMzIsU1hQaVFjZPKRyrAV+1FG16Fr8R+rvAuA3tdfB81Ncs
 +g9KT3z0ErcjHAyz2hqeIXRR4AnyKmQWk7QfGDM2k3UyY7q9sedyd2TjfeYf0+Lq
 5KjwJSeL/8BtpLujGCMC
 =7H1R
 -----END PGP SIGNATURE-----

Merge tag 'imx-fixes-rc' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes

From Sascha Hauer:

ARM i.MX fixes for -rc.

This contains a single compilation fix for the CODA driver.

* tag 'imx-fixes-rc' of git://git.pengutronix.de/git/imx/linux-2.6:
  [media] coda: Fix build due to iram.h rename
2013-01-22 00:22:12 -08:00
Jesse Gross
d9d59089c4 openvswitch: Move LRO check from transmit to receive.
The check for LRO packets was incorrectly put in the transmit path
instead of on receive.  Since this check is supposed to protect OVS
(and other parts of the system) from packets that it cannot handle
it is obviously not useful on egress.  Therefore, this commit moves
it back to the receive side.

The primary problem that this caused is upcalls to userspace tried
to segment the packet even though no segmentation information is
available.  This would later cause NULL pointer dereferences when
skb_gso_segment() did nothing.

Signed-off-by: Jesse Gross <jesse@nicira.com>
2013-01-21 23:57:26 -08:00
Charles Keepax
a4cdbec758 ASoC: wm_adsp: Release firmware on error
This patch correctly releases the firmware if the magic string in the
firmware header does not match.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-22 16:40:26 +09:00