Commit Graph

376940 Commits

Author SHA1 Message Date
Jayachandran C
5649d37c2b MIPS: Netlogic: COP2 save/restore code
Add COP2 register state structure and functions for Netlogic XLP. The
RX and TX buffers and status registers are to be saved. Since the
registers are 64-bit, do the implementation in inline assembly which
works on both 32-bit and 64-bit kernels.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: ddaney.cavm@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/5413/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-13 17:46:41 +02:00
Jayachandran C
64f6ebe639 MIPS: Netlogic: rename nlm_cop2_save/restore
Rename macro nlm_cop2_enable() to nlm_cop2_enable_irqsave() and the macro
nlm_cop2_restore to nlm_cop2_disable_irqrestore(). The new names will
reflect the functionality better, and will make nlm_cop2_restore()
available to be used later in COP2 save/restore patch.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: ddaney.cavm@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/5412/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-13 17:46:41 +02:00
Jayachandran C
1c146cd46f MIPS: Netlogic: Fix nlm_read_c2_status() definition
The sel argument os nlm_read_c2_status() was not used and the macro
returned the sel 0 in all cases. Fix this by defining two macros:
nlm_read_c2_status0() and nlm_read_c2_status1() to return the two
status registers.

Add functions to write to the status registers as well.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: ddaney.cavm@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/5414/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-13 17:46:41 +02:00
Jayachandran C
83bee792d7 MIPS: Allow kernel to use coprocessor 2
Kernel threads should be able to use COP2 if the platform needs it.
Do not call die_if_kernel() for a coprocessor unusable exception if
the exception due to COP2 usage.  Instead, the default notifier for
COP2 exceptions is updated to call die_if_kernel.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: ddaney.cavm@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/5415/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-13 17:46:41 +02:00
Jayachandran C
2c952e06e4 MIPS: Move cop2 save/restore to switch_to()
Move the common code for saving and restoring platform specific COP2
registers to switch_to(). This will make supporting new platforms (like
Netlogic XLP) easier.

The platform specific COP2 definitions are to be specified in
asm/processor.h and in asm/cop2.h.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: ddaney.cavm@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/5411/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-13 17:46:41 +02:00
Ganesan Ramalingam
79f8511c83 MIPS: Netlogic: SWIOTLB dma ops for 32-bit DMA
Add SWIOTLB config option and related files to Netlogic platform.

Some XLP SoC components like the SD/MMC interface cannot do DMA beyond
32-bit physical address. The SD/MMC driver can use memory outside this
range for IO, to support this we have to add bounce buffers implemented
by SWIOTLB.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: Ganesan Ramalingam <ganesanr@broadcom.com>
Patchwork: https://patchwork.linux-mips.org/patch/5410/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-13 17:46:40 +02:00
Jayachandran C
4954a9a211 MIPS: Support SWIOTLB in default dma operations
Provide a default implementation of phys_to_dma and dma_to_phys in
mach-generic/dma_coherence.h.

If CONFIG_NEED_SG_DMA_LENGTH is defined, the dma_length field in
struct scatterlist is used. Set this up in mips_dma_map_sg so that
the default mips DMA ops can be used when SWIOTLB is enabled.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5409/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-13 17:46:40 +02:00
Ralf Baechle
0cecddecd3 MIPS: Kconfig: Remove extranous help keyword.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-13 17:46:40 +02:00
Ralf Baechle
e05eb3f8c1 MIPS: Kconfig: Move ZONE_DMA to a more appropriate place.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-13 17:46:40 +02:00
Markos Chandras
5a5f1efc8f MIPS: kernel: mcount.S: Drop FRAME_POINTER codepath
CONFIG_FRAME_POINTER is not selectable for MIPS so this
codepath was never executed.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5440/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-11 15:19:51 +02:00
Ralf Baechle
c3fc5cd5c5 MIPS: Implement HAVE_CONTEXT_TRACKING.
This enables support for CONFIG_NO_HZ_FULL.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-10 18:02:30 +02:00
Ralf Baechle
e7f3b48af7 MIPS: Cleanup flags in syscall flags handlers.
This will simplify further modifications.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-10 18:01:26 +02:00
Chen Gang
41c8366be8 MIPS: using strlcpy() instead of strncpy()
Ensure strings are always '\0' terminated.  Or in the next pr_info() shit
may hit the fan.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: david.daney@cavium.com
Cc: linux-mips@linux-mips.org
Cc: Linux-Arch <linux-arch@vger.kernel.org>
Cc: linux-kernel@vger.kernel.org <linux-kernel@vger.kernel.org>
Patchwork: https://patchwork.linux-mips.org/patch/5331/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-10 18:01:26 +02:00
Chen Gang
24b1944fc6 MIPS: Ralink: Use strlcpy() instead of strncpy().
'compatible' is used by strlen() in __of_device_is_compatible().

Ensure strings are always '\0' terminated.

'of_ids is not a structure in "include/uapi/*", so no need to initialize
it completly; using strlcpy() instead of strncpy() will do.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: juhosg@openwrt.org
Cc: linux-mips@linux-mips.org
Cc: Linux-Arch <linux-arch@vger.kernel.org>
Patchwork: https://patchwork.linux-mips.org/patch/5330/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-10 18:01:26 +02:00
Chen Gang
90a6fb120d MIPS: Lantiq: Use strlcpy() instead of strncpy().
'compatible' is used by strlen() in __of_device_is_compatible().

Ensure strings are always '\0' terminated.

'of_ids is not a structure in "include/uapi/*", so no need to initialize
it completly; using strlcpy() instead of strncpy() will do.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Acked-by: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Linux-Arch <linux-arch@vger.kernel.org>
Patchwork: https://patchwork.linux-mips.org/patch/5329/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-10 18:01:25 +02:00
David Daney
0ec315121c MIPS: OCTEON: Get rid of CONFIG_CAVIUM_OCTEON_HW_FIX_UNALIGNED
When you turn it off, the kernel is unusable, so get rid of the option
and always allow unaligned access.

The Octeon specific memcpy intentionally does unaligned accesses and it
must not fault.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5303/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-10 18:01:25 +02:00
David Daney
02a49d5144 MIPS: Octeon: Remove vestiges of CONFIG_CAVIUM_DECODE_RSL
This config option doesn't exist any more, remove the leftover code
for it too.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5302/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-10 18:01:25 +02:00
David Daney
9ddebc46e7 MIPS: OCTEON: Rename Kconfig CAVIUM_OCTEON_REFERENCE_BOARD to CAVIUM_OCTEON_SOC
CAVIUM_OCTEON_SOC most place we used to use CPU_CAVIUM_OCTEON.  This
allows us to CPU_CAVIUM_OCTEON in places where we have no OCTEON SOC.

Remove CAVIUM_OCTEON_SIMULATOR as it doesn't really do anything, we can
get the same configuration with CAVIUM_OCTEON_SOC.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-ide@vger.kernel.org
Cc: linux-edac@vger.kernel.org
Cc: linux-i2c@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: spi-devel-general@lists.sourceforge.net
Cc: devel@driverdev.osuosl.org
Cc: linux-usb@vger.kernel.org
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Patchwork: https://patchwork.linux-mips.org/patch/5295/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-10 18:01:25 +02:00
Jiang Liu
6e7582bf35 MIPS: PowerTV: use free_reserved_area() to simplify code
Use common help function free_reserved_area() to simplify code.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jiang Liu <jiang.liu@huawei.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Wen Congyang <wency@cn.fujitsu.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Minchan Kim <minchan@kernel.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Jianguo Wu <wujianguo@huawei.com>
Cc: linux-mm@kvack.org
Cc: linux-arch@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/5248/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-06-10 18:01:24 +02:00
Linus Torvalds
317ddd256b Linux 3.10-rc5 2013-06-08 17:41:04 -07:00
Mikulas Patocka
bbd465df73 hpfs: fix warnings when the filesystem fills up
This patch fixes warnings due to missing lock on write error path.

  WARNING: at fs/hpfs/hpfs_fn.h:353 hpfs_truncate+0x75/0x80 [hpfs]()
  Hardware name: empty
  Pid: 26563, comm: dd Tainted: P           O 3.9.4 #12
  Call Trace:
    hpfs_truncate+0x75/0x80 [hpfs]
    hpfs_write_begin+0x84/0x90 [hpfs]
    _hpfs_bmap+0x10/0x10 [hpfs]
    generic_file_buffered_write+0x121/0x2c0
    __generic_file_aio_write+0x1c7/0x3f0
    generic_file_aio_write+0x7c/0x100
    do_sync_write+0x98/0xd0
    hpfs_file_write+0xd/0x50 [hpfs]
    vfs_write+0xa2/0x160
    sys_write+0x51/0xa0
    page_fault+0x22/0x30
    system_call_fastpath+0x1a/0x1f

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Cc: stable@kernel.org  # 2.6.39+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-06-08 17:39:40 -07:00
Linus Torvalds
81db4dbf59 Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:

 - Trivial: unused variable removal

 - Posix-timers: Add the clock ID to the new proc interface to make it
   useful.  The interface is new and should be functional when we reach
   the final 3.10 release.

 - Cure a false positive warning in the tick code introduced by the
   overhaul in 3.10

 - Fix for a persistent clock detection regression introduced in this
   cycle

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timekeeping: Correct run-time detection of persistent_clock.
  ntp: Remove unused variable flags in __hardpps
  posix-timers: Show clock ID in proc file
  tick: Cure broadcast false positive pending bit warning
2013-06-08 15:51:21 -07:00
Linus Torvalds
c3e58a7945 irqdomain bug fixes for v3.10-rc4
This branch contains a set of straight forward bug fixes to the
 irqdomain code and to a couple of drivers that make use of it.
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Merge tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux

Pull irqdomain bug fixes from Grant Likely:
 "This branch contains a set of straight forward bug fixes to the
  irqdomain code and to a couple of drivers that make use of it."

* tag 'irqdomain-for-linus' of git://git.secretlab.ca/git/linux:
  irqchip: Return -EPERM for reserved IRQs
  irqdomain: document the simple domain first_irq
  kernel/irq/irqdomain.c: before use 'irq_data', need check it whether valid.
  irqdomain: export irq_domain_add_simple
2013-06-08 15:50:42 -07:00
Grant Likely
d94ea3f6d2 irqchip: Return -EPERM for reserved IRQs
The irqdomain core will report a log message for any attempted map call
that fails unless the error code is -EPERM. This patch changes the
Versatile irq controller drivers to use -EPERM because it is normal for
a subset of the IRQ inputs to be marked as reserved on the various
Versatile platforms.

Signed-off-by: Grant Likely <grant.likely@linaro.org>
2013-06-08 21:34:16 +01:00
Linus Walleij
94a63da0ac irqdomain: document the simple domain first_irq
The first_irq needs to be zero to get a linear domain and that
comes with special semantics. We want to simplify this going
forward but some documentation never hurts.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
2013-06-08 21:15:09 +01:00
Chen Gang
275e31b10c kernel/irq/irqdomain.c: before use 'irq_data', need check it whether valid.
Since irq_data may be NULL, if so, we WARN_ON(), and continue, 'hwirq'
which related with 'irq_data' has to initialize later, or it will cause
issue.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
2013-06-08 21:15:09 +01:00
Arnd Bergmann
346dbb79ea irqdomain: export irq_domain_add_simple
All other irq_domain_add_* functions are exported already, and apparently
this one got left out by mistake, which causes build errors for ARM
allmodconfig kernels:

ERROR: "irq_domain_add_simple" [drivers/gpio/gpio-rcar.ko] undefined!
ERROR: "irq_domain_add_simple" [drivers/gpio/gpio-em.ko] undefined!

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
2013-06-08 21:15:08 +01:00
Linus Torvalds
50b4b9c3e8 ARM: SoC fixes for 3.10-rc
Another week, another batch of fixes for arm-soc platforms.
 
 Nothing controversial here, a handful of fixes for regressions and/or
 serious problems across several of the platforms. Things are slowing
 down nicely on fix rates for 3.10.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "Another week, another batch of fixes for arm-soc platforms.

  Nothing controversial here, a handful of fixes for regressions and/or
  serious problems across several of the platforms.  Things are slowing
  down nicely on fix rates for 3.10"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: exynos: add debug_ll_io_init() call in exynos_init_io()
  ARM: EXYNOS: uncompress - print debug messages if DEBUG_LL is defined
  ARM: shmobile: sh73a0: Update CMT clockevent rating to 80
  sh-pfc: r8a7779: Don't group USB OVC and PENC pins
  ARM: mxs: icoll: Fix interrupts gpio bank 0
  ARM: imx: clk-imx6q: AXI clock select index is incorrect
  ARM: bcm2835: override the HW UART periphid
  ARM: mvebu: Fix bug in coherency fabric low level init function
  ARM: Kirkwood: TS219: Fix crash by double PCIe instantiation
  ARM: ux500: Provide supplies for AUX1, AUX2 and AUX3
  ARM: ux500: Only configure wake-up reasons on ux500 based platforms
  ARM: dts: imx: fix clocks for cspi
  ARM i.MX6q: fix for ldb_di_sels
2013-06-08 11:56:22 -07:00
Linus Torvalds
554e6e9f81 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
 "MIPS fixes across the field.  The only area that's standing out is the
  exception handling which received it's dose of breakage as part of the
  microMIPS patchset"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: ralink: add missing SZ_1M multiplier
  MIPS: Compat: Fix cputime_to_timeval() arguments in compat binfmt_elf.
  MIPS: OCTEON: Improve _machine_halt implementation.
  MIPS: rtlx: Fix implicit declaration of function set_vi_handler()
  MIPS: Trap exception handling fixes
  MIPS: Quit exposing Kconfig symbols in uapi headers.
  MIPS: Remove duplicate definition of check_for_high_segbits.
2013-06-08 11:51:13 -07:00
Linus Torvalds
17d8dfcda6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu fix from Greg Ungerer:
 "A single fix for compilation breakage to many of the ColdFire CPU
  targets"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: only use local gpio_request_one if not using GPIOLIB
2013-06-08 11:50:17 -07:00
Linus Torvalds
6ea31c56a5 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "Regression fixers for the big 3:

   - nouveau: hdmi audio, dac load detect, s/r regressions fixed
   - radeon: long standing system hang fixed, hdmi audio and rs780 fast
     fb fixes
   - intel: one old regression, a WARN removal, and a stop X dying fix

  Otherwise one mgag200 fix, a couple of arm build fixes, and a core use
  after free fix."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/nv50/kms: use dac loadval from vbios, where it's available
  drm/nv50/disp: force dac power state during load detect
  drm/nv50-nv84/fifo: fix resume regression introduced by playlist race fix
  drm/nv84/disp: Fix HDMI audio regression
  drm/i915/sdvo: Use &intel_sdvo->ddc instead of intel_sdvo->i2c for DDC.
  drm/radeon: don't allow audio on DCE6
  drm/radeon: Use direct mapping for fast fb access on RS780/RS880 (v2)
  radeon: Fix system hang issue when using KMS with older cards
  drm/i915: no lvds quirk for hp t5740
  drm/i915: Quirk the pipe A quirk in the modeset state checker
  drm/i915: Fix spurious -EIO/SIGBUS on wedged gpus
  drm/mgag200: Add missing write to index before accessing data register
  drm/nouveau: use mdelay instead of large udelay constants
  drm/tilcd: select BACKLIGHT_LCD_SUPPORT
  drm: fix a use-after-free when GPU acceleration disabled
2013-06-08 11:35:20 -07:00
Linus Torvalds
d7a39e300d Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine fixes from Vinod Koul:
 "Fix from Andy is for dmatest regression reported by Will and Rabin has
  fixed runtime ref counting for st_dma40"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmatest: do not allow to interrupt ongoing tests
  dmaengine: ste_dma40: fix pm runtime ref counting
2013-06-08 10:05:10 -07:00
Linus Torvalds
14d0ee0517 This contains 4 fixes.
The first two fix the case where full RCU debugging is enabled, enabling
 function tracing causes a live lock of the system. This is due to the added
 debug checks in rcu_dereference_raw() that is used by the function tracer.
 These checks are also traced by the function tracer as well as cause enough
 overhead to the function tracer to slow down the system enough that
 the time to finish an interrupt can take longer than when the next
 interrupt is triggered, causing a live lock from the timer interrupt.
 
 Talking this over with Paul McKenney, we came up with a fix that adds
 a new rcu_dereference_raw_notrace() that does not perform these added checks,
 and let the function tracer use that.
 
 The third commit fixes a failed compile when branch tracing is enabled,
 due to the conversion of the trace_test_buffer() selftest that the
 branch trace wasn't converted for.
 
 The forth patch fixes a bug caught by the RCU lockdep code where a
 rcu_read_lock() is performed when rcu is disabled (either going to
 or from idle, or user space). This happened on the irqsoff tracer
 as it calls task_uid(). The fix here was to use current_uid() when
 possible that doesn't use rcu locking. Which luckily, is always used
 when irqsoff calls this code.
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Merge tag 'trace-fixes-v3.10-rc3-v3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "This contains 4 fixes.

  The first two fix the case where full RCU debugging is enabled,
  enabling function tracing causes a live lock of the system.  This is
  due to the added debug checks in rcu_dereference_raw() that is used by
  the function tracer.  These checks are also traced by the function
  tracer as well as cause enough overhead to the function tracer to slow
  down the system enough that the time to finish an interrupt can take
  longer than when the next interrupt is triggered, causing a live lock
  from the timer interrupt.

  Talking this over with Paul McKenney, we came up with a fix that adds
  a new rcu_dereference_raw_notrace() that does not perform these added
  checks, and let the function tracer use that.

  The third commit fixes a failed compile when branch tracing is
  enabled, due to the conversion of the trace_test_buffer() selftest
  that the branch trace wasn't converted for.

  The forth patch fixes a bug caught by the RCU lockdep code where a
  rcu_read_lock() is performed when rcu is disabled (either going to or
  from idle, or user space).  This happened on the irqsoff tracer as it
  calls task_uid().  The fix here was to use current_uid() when possible
  that doesn't use rcu locking.  Which luckily, is always used when
  irqsoff calls this code."

* tag 'trace-fixes-v3.10-rc3-v3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Use current_uid() for critical time tracing
  tracing: Fix bad parameter passed in branch selftest
  ftrace: Use the rcu _notrace variants for rcu_dereference_raw() and friends
  rcu: Add _notrace variation of rcu_dereference_raw() and hlist_for_each_entry_rcu()
2013-06-07 18:46:51 -07:00
Rafael J. Wysocki
ea7f665612 Revert "ACPI / scan: do not match drivers against objects having scan handlers"
Commit 9f29ab11dd ("ACPI / scan: do not match drivers against objects
having scan handlers") introduced a boot regression on Tony's ia64 HP
rx2600.  Tony says:

  "It panics with the message:

   Kernel panic - not syncing: Unable to find SBA IOMMU: Try a generic or DIG kernel

   [...] my problem comes from arch/ia64/hp/common/sba_iommu.c
   where the code in sba_init() says:

        acpi_bus_register_driver(&acpi_sba_ioc_driver);
        if (!ioc_list) {

   but because of this change we never managed to call ioc_init()
   so ioc_list doesn't get set up, and we die."

Revert it to avoid this breakage and we'll fix the problem it attempted
to address later.

Reported-by: Tony Luck <tony.luck@gmail.com>
Cc: 3.9+ <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-06-07 18:33:12 -07:00
Olof Johansson
090878aa95 The mxs fixes for 3.10:
- Since the time we move to MULTI_IRQ_HANDLER, the 0x7f polling for no
   interrupt in icoll_handle_irq() becomes insane, because 0x7f is an
   valid interrupt number, the irq of gpio bank 0.  That unnecessary
   polling results in the driver not detecting when irq 0x7f is active
   which makes the machine effectively dead lock.  The fix removes the
   interrupt poll loop and allows usage of gpio0 interrupt without an
   infinite loop.
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Merge tag 'mxs-fixes-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes

From Shawn Guo, mxs fixes for 3.10:

- Since the time we move to MULTI_IRQ_HANDLER, the 0x7f polling for no
  interrupt in icoll_handle_irq() becomes insane, because 0x7f is an
  valid interrupt number, the irq of gpio bank 0.  That unnecessary
  polling results in the driver not detecting when irq 0x7f is active
  which makes the machine effectively dead lock.  The fix removes the
  interrupt poll loop and allows usage of gpio0 interrupt without an
  infinite loop.

* tag 'mxs-fixes-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: mxs: icoll: Fix interrupts gpio bank 0

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-07 18:19:40 -07:00
Olof Johansson
3d0d8b9155 The imx fixes for 3.10, take 2:
- One device tree fix for all spi node to have per clock added.
   The clock is needed by spi driver to calculate bit rate divisor.
   The spi node in the current device trees either does not have the
   clock or is defined as dummy clock, in which case the driver probe
   will fail or spi will run at a wrong bit rate.
 
 - Two imx6q clock fixes, which correct axi_sels and ldb_di_sels.
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Merge tag 'imx-fixes-3.10-2' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes

From Shawn Guo, imx fixes for 3.10, take 2:

- One device tree fix for all spi node to have per clock added.
  The clock is needed by spi driver to calculate bit rate divisor.
  The spi node in the current device trees either does not have the
  clock or is defined as dummy clock, in which case the driver probe
  will fail or spi will run at a wrong bit rate.

- Two imx6q clock fixes, which correct axi_sels and ldb_di_sels.

* tag 'imx-fixes-3.10-2' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: imx: clk-imx6q: AXI clock select index is incorrect
  ARM: dts: imx: fix clocks for cspi
  ARM i.MX6q: fix for ldb_di_sels

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-07 18:18:19 -07:00
Doug Anderson
9c1fcdccc7 ARM: exynos: add debug_ll_io_init() call in exynos_init_io()
If the early MMU mapping of the UART happens to get booted out of the
TLB between the start of paging_init() and when we finally re-add the
UART at the very end of s3c_init_cpu(), we'll get a hang at bootup if
we've got early_printk enabled.  Avoid this hang by calling
debug_ll_io_init() early.

Without this patch, you can reliably reproduce a hang when early
printk is enabled by adding flush_tlb_all() at the start of
exynos_init_io().  After this patch the hang goes away.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-07 18:12:00 -07:00
Olof Johansson
fb565ff7c8 Renesas ARM based SoC fixes for v3.10
* Correction to USB OVC and PENC pin groupings on r8a7779 SoC.
   This avoids conflicts when the USB_OVCn pins are used by another function.
   This has been observed to be a problem in v3.10-rc1.
 
 * Update CMT clock rating for sh73a0 SoC to resolve boot failure
   on kzm9g-reference. This resolves a regression between v3.9 and v3.10-rc1.
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Merge tag 'renesas-fixes-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

From Simon Horman, Renesas ARM based SoC fixes for v3.10:
- Correction to USB OVC and PENC pin groupings on r8a7779 SoC.
  This avoids conflicts when the USB_OVCn pins are used by another function.
  This has been observed to be a problem in v3.10-rc1.
- Update CMT clock rating for sh73a0 SoC to resolve boot failure
  on kzm9g-reference. This resolves a regression between v3.9 and v3.10-rc1.

* tag 'renesas-fixes-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: sh73a0: Update CMT clockevent rating to 80
  sh-pfc: r8a7779: Don't group USB OVC and PENC pins

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-07 18:11:02 -07:00
Tushar Behera
437d8ac510 ARM: EXYNOS: uncompress - print debug messages if DEBUG_LL is defined
Printing low-level debug messages make an assumption that the specified
UART port has been preconfigured by the bootloader. Incorrectly
specified UART port results in system getting stalled while printing the
message "Uncompressing Linux... done, booting the kernel"
This UART port number is specified through S3C_LOWLEVEL_UART_PORT. Since
the UART port might different for different board, it is not possible to
specify it correctly for every board that use a common defconfig file.

Calling this print subroutine only when DEBUG_LL fixes the problem. By
disabling DEBUG_LL in default config file, we would be able to boot
multiple boards with different default UART ports.

With this current approach, we miss the print "Uncompressing Linux...
done, booting the kernel." when DEBUG_LL is not defined.

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-06-07 18:09:22 -07:00
Linus Torvalds
e8193ce572 InfiniBand fixes for 3.10-rc:
- qib RCU/lockdep fix
  - iser device removal fix, plus doc fixes
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Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

Pull infiniband fixes from Roland Dreier:
 - qib RCU/lockdep fix
 - iser device removal fix, plus doc fixes

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/qib: Fix lockdep splat in qib_alloc_lkey()
  MAINTAINERS: Add entry for iSCSI Extensions for RDMA (iSER) initiator
  IB/iser: Add Mellanox copyright
  IB/iser: Fix device removal flow
2013-06-07 16:29:21 -07:00
Linus Torvalds
5125ed5b54 vfio - fix rmmod crash
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Merge tag 'vfio-v3.10-rc5' of git://github.com/awilliam/linux-vfio

Pull vfio fix from Alex Williamson:
 "fix rmmod crash"

* tag 'vfio-v3.10-rc5' of git://github.com/awilliam/linux-vfio:
  vfio: fix crash on rmmod
2013-06-07 16:28:46 -07:00
Linus Torvalds
b8e9dbacdd * Fixes how eCryptfs handles msync to sync both the upper and lower file
* A couple of MAINTAINERS updates
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Merge tag 'ecryptfs-3.10-rc5-msync' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs

Pull ecryptfs fixes from Tyler Hicks:
 - Fixes how eCryptfs handles msync to sync both the upper and lower
   file
 - A couple of MAINTAINERS updates

* tag 'ecryptfs-3.10-rc5-msync' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
  eCryptfs: Check return of filemap_write_and_wait during fsync
  Update eCryptFS maintainers
  ecryptfs: fixed msync to flush data
2013-06-07 16:21:44 -07:00
Linus Torvalds
e432785934 Merge branch 'for-3.10' of git://git.samba.org/sfrench/cifs-2.6
Pull CIFS fix from Steve French:
 "Fix one byte buffer overrun with prefixpaths on cifs mounts which can
  cause a problem with mount depending on the string length"

* 'for-3.10' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: fix off-by-one bug in build_unc_path_to_root
2013-06-07 16:05:43 -07:00
Andy Shevchenko
bcc567e311 dmatest: do not allow to interrupt ongoing tests
When user interrupts ongoing transfers the dmatest may end up with console
lockup, oops, or data mismatch. This patch prevents user to abort any ongoing
test.

Documentation is updated accordingly.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reported-by: Will Deacon <will.deacon@arm.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-06-08 02:13:44 +05:30
Linus Torvalds
308f8813de sound fixes for v3.10-rc5
- A pile of small regression fix patches for HD-audio VIA codecs
 - Quirks for HD-aduio and USB-audio devices
 - A trivial SIS7019 error path fix
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Merge tag 'sound-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 - A pile of small regression fix patches for HD-audio VIA codecs
 - Quirks for HD-aduio and USB-audio devices
 - A trivial SIS7019 error path fix

* tag 'sound-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: usb-audio - Fix invalid volume resolution on Logitech HD webcam c270
  ALSA: usb-audio - Apply Logitech QuickCam Pro 9000 quirk only to audio iface
  ALSA: hda/via - Clean up duplicated codes
  ALSA: hda/via - Fix wrongly cleared pins after suspend on VT1802
  ALSA: hda - Add keep_eapd_on flag to generic parser
  ALSA: hda - Allow setting automute/automic hooks after parsing
  ALSA: hda/via - Disable broken dynamic power control
  ALSA: usb-audio: fix Roland/Cakewalk UM-3G support
  ALSA: hda - Add headset quirk for two Dell machines
  ALSA: hda - add dock support for Thinkpad T431s
  ALSA: sis7019: fix error return code in sis_chip_create()
2013-06-07 13:05:18 -07:00
Linus Torvalds
3132aef2ed Power management and ACPI fixes for 3.10-rc5
- Fix for an ACPI PM regression causing Toshiba P870-303 to crash
   during boot from Rafael J Wysocki.
 
 - ACPI fix for an issue causing some drivers to attempt to bind to
   devices they shouldn't touch from Aaron Lu.
 
 - Fix for a recent cpufreq regression related to a possible race with
   CPU offline from Michael Wang.
 
 - ACPI cpufreq regression fix for an issue causing turbo frequencies
   to be underutilized in some cases from Ross Lagerwall.
 
 - cpufreq-cpu0 driver fix related to incorrect clock ACPI usage from
   Guennadi Liakhovetski.
 
 - HP WMI driver fix for an issue causing GPS initialization and
   poweroff failures on HP Elitebook 6930p from Lan Tianyu.
 
 - APEI (ACPI Platform Error Interface) fix for an issue in the error
   code path in ghes_probe() from Wei Yongjun.
 
 - New ACPI video driver blacklist entries for HP m4 and HP Pavilion
   g6 from Alex Hung and Ash Willis.
 
 /
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Merge tag 'pm+acpi-3.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI fixes from Rafael J Wysocki:

 - Fix for an ACPI PM regression causing Toshiba P870-303 to crash
   during boot from Rafael J Wysocki.

 - ACPI fix for an issue causing some drivers to attempt to bind to
   devices they shouldn't touch from Aaron Lu.

 - Fix for a recent cpufreq regression related to a possible race with
   CPU offline from Michael Wang.

 - ACPI cpufreq regression fix for an issue causing turbo frequencies to
   be underutilized in some cases from Ross Lagerwall.

 - cpufreq-cpu0 driver fix related to incorrect clock ACPI usage from
   Guennadi Liakhovetski.

 - HP WMI driver fix for an issue causing GPS initialization and
   poweroff failures on HP Elitebook 6930p from Lan Tianyu.

 - APEI (ACPI Platform Error Interface) fix for an issue in the error
   code path in ghes_probe() from Wei Yongjun.

 - New ACPI video driver blacklist entries for HP m4 and HP Pavilion g6
   from Alex Hung and Ash Willis.

* tag 'pm+acpi-3.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / PM: Do not execute _PS0 for devices without _PSC during initialization
  cpufreq: cpufreq-cpu0: use the exact frequency for clk_set_rate()
  cpufreq: protect 'policy->cpus' from offlining during __gov_queue_work()
  ACPI / scan: do not match drivers against objects having scan handlers
  ACPI / APEI: fix error return code in ghes_probe()
  acpi-cpufreq: set current frequency based on target P-State
  ACPI / video: ignore BIOS initial backlight value for HP Pavilion g6
  ACPI / video: ignore BIOS initial backlight value for HP m4
  x86 / platform / hp_wmi: Fix bluetooth_rfkill misuse in hp_wmi_rfkill_setup()
2013-06-07 13:03:53 -07:00
Rafael J. Wysocki
c6617b39c3 Merge branch 'pm-fixes'
* pm-fixes:
  cpufreq: cpufreq-cpu0: use the exact frequency for clk_set_rate()
  cpufreq: protect 'policy->cpus' from offlining during __gov_queue_work()
  acpi-cpufreq: set current frequency based on target P-State
2013-06-07 12:35:43 +02:00
Rafael J. Wysocki
2314b69253 Merge branch 'acpi-fixes'
* acpi-fixes:
  ACPI / PM: Do not execute _PS0 for devices without _PSC during initialization
  ACPI / scan: do not match drivers against objects having scan handlers
  ACPI / APEI: fix error return code in ghes_probe()
  ACPI / video: ignore BIOS initial backlight value for HP Pavilion g6
  ACPI / video: ignore BIOS initial backlight value for HP m4
  x86 / platform / hp_wmi: Fix bluetooth_rfkill misuse in hp_wmi_rfkill_setup()
2013-06-07 12:35:23 +02:00
Rafael J. Wysocki
7cd8407d53 ACPI / PM: Do not execute _PS0 for devices without _PSC during initialization
Commit b378549 (ACPI / PM: Do not power manage devices in unknown
initial states) added code to force devices without _PSC, but having
_PS0 defined in the ACPI namespace, into ACPI power state D0 by
executing _PS0 for them.  That turned out to break Toshiba P870-303,
however, so revert that code.

References: https://bugzilla.kernel.org/show_bug.cgi?id=58201
Reported-and-tested-by: Jerome Cantenot <jerome.cantenot@gmail.com>
Tracked-down-by: Lan Tianyu <tianyu.lan@intel.com>
Cc: 3.9+ <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-06-07 12:33:57 +02:00
Linus Torvalds
1612e111e4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fix from David Miller:
 "This is a quick one commit pull request to cure the regression
  introduced by the MSG_CMSG_COMPAT change."

(Background: commit 1be374a051 completely broke 32-bit COMPAT handling
by not only disallowing MSG_CMSG_COMPAT from user APIs, but clearing it
in our own internal use too!)

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  net: Unbreak compat_sys_{send,recv}msg
2013-06-06 18:09:05 -07:00