Commit Graph

349198 Commits

Author SHA1 Message Date
Douglas Gilbert
8461c2f6fd ARM: at91/dts: correct comment in at91sam9x5.dtsi for mii
Concerning pinctrl_macb0_rmii_mii, values were okay, but not comments.

Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-01-23 10:40:51 +01:00
Nicolas Ferre
581d629974 ARM: at91/at91_dt_defconfig: add at91sam9n12 SoC to DT defconfig
Reported-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-01-23 10:39:58 +01:00
Nicolas Ferre
2e06e92c75 ARM: at91/at91_dt_defconfig: remove memory specification to cmdline
No need for this cmdline option as we are using DT.
Moreover this defconfig is targeted to multiple SoC/boards: this option
was nonsense.

Reported-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-01-23 10:39:57 +01:00
Boris BREZILLON
b45c998ea7 ARM: at91/dts: add macb mii pinctrl config for kizbox
This patch overrides default macb pinctrl config defined in
at91sam9260.dtsi (pinctrl_macb_rmii) with kizbox board config
(pinctrl_macb_rmii + pinctrl_macb_rmii_mii_alt).

Signed-off-by: Boris BREZILLON <linux-arm@overkiz.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-01-23 10:34:38 +01:00
Jean-Christophe PLAGNIOL-VILLARD
36224d0fe0 ARM: at91: rm9200: remake the BGA as default version
Make BGA as the default version as we are supposed to just have
to specify when we use the PQFP version.

Issue was existing since commit:
3e90772 (ARM: at91: fix at91rm9200 soc subtype handling).

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: stable <stable@vger.kernel.org> [v3.3]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-01-23 10:31:14 +01:00
Joachim Eastwood
334c9e8d6d ARM: at91: fix gpios on i2c-gpio for RM9200 DT
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-01-23 10:31:07 +01:00
Richard Genoud
1bab02ec1b ARM: at91/at91sam9x5 DTS: add SCK USART pins
The SCK pins where missing in usarts pinctrl.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-01-23 10:31:00 +01:00
Richard Genoud
c89cec3a40 ARM: at91/at91sam9x5 DTS: correct wrong PIO BANK values on u(s)arts
The PIN_BANK 3 is for PDxx pins, not PCxx pins.
And PIN_BANK 1 is for PBxx, not PIN_BANK 0.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-01-23 10:30:54 +01:00
Richard Genoud
45976c01b7 ARM: at91/at91-pinctrl documentation: fix typo and add some details
The relation between PIN_BANK numbers and pio letters wasn't made very
clear.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2013-01-23 10:30:44 +01:00
Cong Ding
10b8c7dff5 fs/cifs/cifs_dfs_ref.c: fix potential memory leakage
When it goes to error through line 144, the memory allocated to *devname is
not freed, and the caller doesn't free it either in line 250. So we free the
memroy of *devname in function cifs_compose_mount_options() when it goes to
error.

Signed-off-by: Cong Ding <dinggnu@gmail.com>
CC: stable <stable@kernel.org>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
2013-01-22 23:58:16 -06:00
Luciano Coelho
a7e2ca1703 Revert "drivers/misc/ti-st: remove gpio handling"
This reverts commit eccf2979b2.

The reason is that it broke TI WiLink shared transport on Panda.
Also, callback functions should not be added to board files anymore,
so revert to implementing the power functions in the driver itself.

Additionally, changed a variable name ('status' to 'err') so that this
revert compiles properly.

Cc: stable <stable@vger.kernel.org> [3.7]
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-22 17:22:47 -08:00
Sebastian Hesselbarth
09d75bc7d2 ARM: kirkwood: fix missing #interrupt-cells property
The gpio controller on kirkwood can provide interrupts but is missing
the #interrupt-cells property. This patch just adds it to both gpio
controllers.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-01-23 01:10:48 +00:00
Andrew Lunn
f42abc72da mmc: mvsdio: use devm_ API to simplify/correct error paths.
There are a number of bugs in the error paths of this driver.  Make
use of devm_ functions to simplify the cleanup on error.

Based on a patch by Russell King.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-01-23 01:08:01 +00:00
Cong Ding
d6f620a457 clk: mvebu/clk-cpu.c: fix memory leakage
the variable cpuclk and clk_name should be properly freed when error happens.

Signed-off-by: Cong Ding <dinggnu@gmail.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-01-23 01:06:52 +00:00
Linus Torvalds
1d85490853 PCI updates for v3.8:
Hotplug
       PCI: pciehp: Use per-slot workqueues to avoid deadlock
       PCI: shpchp: Make shpchp_wq non-ordered
       PCI: shpchp: Handle push button event asynchronously
       PCI: shpchp: Use per-slot workqueues to avoid deadlock
   Power management
       PCI: Allow pcie_aspm=force even when FADT indicates it is unsupported
   Misc
       PCI/AER: pci_get_domain_bus_and_slot() call missing required pci_dev_put()
       PCI: remove depends on CONFIG_EXPERIMENTAL
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Merge tag '3.8-pci-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "The most important is a fix for a pciehp deadlock that occurs when
  unplugging a Thunderbolt adapter.  We also applied the same fix to
  shpchp, removed CONFIG_EXPERIMENTAL dependencies, fixed a
  pcie_aspm=force problem, and fixed a refcount leak.

  Details:

   - Hotplug
      PCI: pciehp: Use per-slot workqueues to avoid deadlock
      PCI: shpchp: Make shpchp_wq non-ordered
      PCI: shpchp: Handle push button event asynchronously
      PCI: shpchp: Use per-slot workqueues to avoid deadlock

   - Power management
      PCI: Allow pcie_aspm=force even when FADT indicates it is unsupported

   - Misc
      PCI/AER: pci_get_domain_bus_and_slot() call missing required pci_dev_put()
      PCI: remove depends on CONFIG_EXPERIMENTAL"

* tag '3.8-pci-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: remove depends on CONFIG_EXPERIMENTAL
  PCI: Allow pcie_aspm=force even when FADT indicates it is unsupported
  PCI: shpchp: Use per-slot workqueues to avoid deadlock
  PCI: shpchp: Handle push button event asynchronously
  PCI: shpchp: Make shpchp_wq non-ordered
  PCI/AER: pci_get_domain_bus_and_slot() call missing required pci_dev_put()
  PCI: pciehp: Use per-slot workqueues to avoid deadlock
2013-01-22 16:36:23 -08:00
Tejun Heo
f56c3196f2 async: fix __lowest_in_progress()
Commit 083b804c4d ("async: use workqueue for worker pool") made it
possible that async jobs are moved from pending to running out-of-order.
While pending async jobs will be queued and dispatched for execution in
the same order, nothing guarantees they'll enter "1) move self to the
running queue" of async_run_entry_fn() in the same order.

Before the conversion, async implemented its own worker pool.  An async
worker, upon being woken up, fetches the first item from the pending
list, which kept the executing lists sorted.  The conversion to
workqueue was done by adding work_struct to each async_entry and async
just schedules the work item.  The queueing and dispatching of such work
items are still in order but now each worker thread is associated with a
specific async_entry and moves that specific async_entry to the
executing list.  So, depending on which worker reaches that point
earlier, which is non-deterministic, we may end up moving an async_entry
with larger cookie before one with smaller one.

This broke __lowest_in_progress().  running->domain may not be properly
sorted and is not guaranteed to contain lower cookies than pending list
when not empty.  Fix it by ensuring sort-inserting to the running list
and always looking at both pending and running when trying to determine
the lowest cookie.

Over time, the async synchronization implementation became quite messy.
We better restructure it such that each async_entry is linked to two
lists - one global and one per domain - and not move it when execution
starts.  There's no reason to distinguish pending and running.  They
behave the same for synchronization purposes.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-22 16:21:24 -08:00
Linus Torvalds
ed06ef318a perf/urgent fixes:
. revert 20b279 - require exclude_guest to use PEBS - kernel side,
   now older binaries will continue working for things like cycles:pp
   without needing to pass extra modifiers, from David Ahern.
 
 . Fix building from 'make perf-*-src-pkg' tarballs, broken by UAPI, from
   Sebastian Andrzej Siewior
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

 . revert 20b279 - require exclude_guest to use PEBS - kernel side, now
   older binaries will continue working for things like cycles:pp
   without needing to pass extra modifiers, from David Ahern.

 . Fix building from 'make perf-*-src-pkg' tarballs, broken by UAPI,
   from Sebastian Andrzej Siewior

[ Pulling directly, Ingo would normally pull but has been unresponsive ]

* tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf tools: Fix building from 'make perf-*-src-pkg' tarballs
  perf x86: revert 20b279 - require exclude_guest to use PEBS - kernel side
2013-01-22 14:32:07 -08:00
Linus Torvalds
343391b1d1 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
 "Improve the stability of the linux kernel on the parisc architecture"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: sigaltstack doesn't round ss.ss_sp as required
  parisc: improve ptrace support for gdb single-step
  parisc: don't claim cpu irqs more than once
  parisc: avoid undefined shift in cnv_float.h
2013-01-22 14:30:35 -08:00
Matthew Garrett
efa1719458 cpufreq: Add module aliases for acpi-cpufreq
The acpi core will call request_module("acpi-cpufreq") on subsystem init,
but this will fail if the module isn't available at that stage of boot.
Add some module aliases to ensure that udev can load the module on Intel
and AMD systems with the appropriate feature bits - I /think/ that this
will also work on VIA systems, but haven't verified that.

References: http://lkml.kernel.org/r/1448223.sdUJnNSRz4@vostro.rjw.lan
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Tested-by: Leonid Isaev <lisaev@umail.iu.edu>
Acked-by: Borislav Petkov <bp@suse.de>
Cc: 3.7+ <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 22:33:46 +01:00
Linus Torvalds
262060ea46 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse fixes from Miklos Szeredi:
 "This contain a bugfix for CUSE and miscellaneous small fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: remove unused variable in fuse_try_move_page()
  fuse: make fuse_file_fallocate() static
  fuse: Move CUSE Kconfig entry from fs/Kconfig into fs/fuse/Kconfig
  cuse: fix uninitialized variable warnings
  cuse: do not register multiple devices with identical names
  cuse: use mutex as registration lock instead of spinlocks
2013-01-22 11:53:19 -08:00
Linus Torvalds
b75b25b00d GPIO fixes for the v3.8 series:
- Remove a bad #include from the Samsung driver
 - Some Kconfig hazzle for the Samsungs
 - Skip gpiolib registration on EXYNOS5440
 - Don't free the MVEBU label
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Merge tag 'fixes-for-v3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Here are some GPIO fixes I stacked up in my GPIO tree:

   - Remove a bad #include from the Samsung driver
   - Some Kconfig hazzle for the Samsungs
   - Skip gpiolib registration on EXYNOS5440
   - Don't free the MVEBU label"

* tag 'fixes-for-v3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: mvebu: Don't free chip label memory
  gpio: samsung: skip gpio lib registration for EXYNOS5440
  gpio: samsung: silent build warning for EXYNOS5 SoCs
  gpio: samsung: fix pinctrl condition for exynos and exynos5440
  gpio: samsung: remove inclusion <mach/regs-clock.h>
2013-01-22 11:52:23 -08:00
Olof Johansson
51edce0cce Minimal omap fixes for the -rc series:
- A build fix for recently merged omap DRM changes
 
 - Regression fixes from the common clock framework conversion
   for omap4 audio and omap2 reboot
 
 - Regression fix for pandaboard WLAN control UART muxing caused by
   u-boot only muxing essential pins nowadays
 
 - Timer iteration fix for CONFIG_OF_DYNAMIC
 
 - A section mismatch fix for ocp2scp init
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Merge tag 'omap-for-v3.8-rc4/fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

From Tony Lindgren:
Minimal omap fixes for the -rc series:

- A build fix for recently merged omap DRM changes

- Regression fixes from the common clock framework conversion
  for omap4 audio and omap2 reboot

- Regression fix for pandaboard WLAN control UART muxing caused by
  u-boot only muxing essential pins nowadays

- Timer iteration fix for CONFIG_OF_DYNAMIC

- A section mismatch fix for ocp2scp init

* tag 'omap-for-v3.8-rc4/fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (306 commits)
  ARM: OMAP2+: omap4-panda: add UART2 muxing for WiLink shared transport
  ARM: OMAP2+: DT node Timer iteration fix
  ARM: OMAP2+: Fix section warning for omap_init_ocp2scp()
  ARM: OMAP2+: fix build break for omapdrm
  ARM: OMAP2: Fix missing omap2xxx_clkt_vps_late_init function calls
  ARM: OMAP4: hwmod_data: Correct IDLEMODE for McPDM
  ARM: OMAP4: clock data: Lock ABE DPLL on all revisions
  + Linux 3.8-rc4

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-01-22 11:20:29 -08:00
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
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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
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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.
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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.
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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
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
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
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
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
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
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
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.
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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
Dan Carpenter
d8b79b2f94 f2fs: use _safe() version of list_for_each
This is calling list_del() inside a loop which is a problem when we try
move to the next item on the list.  I've converted it to use the _safe
version.  And also, as a cleanup, I've converted it to use
list_for_each_entry instead of list_for_each.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2013-01-22 10:49:00 +09:00