As per the comments added by this commit, %g2 turns out to not be a
usable place to save away orig_i0 for syscall restart handling.

In fact all of %g2, %g3, %g4, and %g5 are assumed to be saved across
a system call by various bits of code in glibc.

%g1 can't be used because that holds the syscall number, which would
need to be saved and restored for syscall restart handling too, and
that would only compound our problems :-)

This leaves us with %g6 and %g7 which are for "system use".  %g7 is
used as the "thread register" by glibc, but %g6 is used as a compiler
and assembler temporary scratch register.  And in no instance is %g6
used to hold a value across a system call.

Therefore %g6 is safe for storing away orig_i0, at least for now.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Although we provide a proper way for a debugger to control whether
syscall restart occurs, we run into problems because orig_i0 is not
saved and restored properly.

Luckily we can solve this problem without having to make debuggers
aware of the issue.  Across system calls, several registers are
considered volatile and can be safely clobbered.

Therefore we use the pt_regs save area of one of those registers, %g2,
as a place to save and restore orig_i0.

Debuggers transparently will do the right thing because they save and
restore this register already.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This file introduced in 2.6.32.47 currently fails to compile:

arch/sparc/kernel/sigutil_64.c: In function 'save_fpu_state':
arch/sparc/kernel/sigutil_64.c:25: error: 'EFAULT' undeclared (first use in this function)
Signed-off-by: NBen Hutchings <ben@decadent.org.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon/kms/combios: fix dynamic allocation of PM clock modes

After commit e978aa7d ("cpuidle: Move dev->last_residency update to
driver enter routine; remove dev->last_state") setting acpi_idle_suspend
to 1 by acpi_processor_suspend() causes the ACPI cpuidle routines to
return error codes continuously, which in turn causes cpuidle to lock up
(hard).

However, acpi_idle_suspend doesn't appear to be useful for any
particular purpose (it's racy and doesn't really provide any real
protection), so it can be removed, which makes the problem go away.
Reported-and-tested-by: NTomas M. <tmezzadra@gmail.com>
Reported-and-tested-by: NFerenc Wagner <wferi@niif.hu>
Tested-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

I missed the combios path when I updated the atombios pm code.

Reported by amarsh04 on IRC.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm/imx: fix imx6q mmc error when mounting rootfs
  arm/imx: fix AUTO_ZRELADDR selection
  arm/imx: fix the references to ARCH_MX3
  ARM: mx51/53: set pwm clock parent to ipg_perclk
  arm/tegra: enable headphone detection gpio on seaboard
  arm/dt: Fix ventana SDHCI power-gpios
  arm/tegra: Don't create duplicate gpio and pinmux devices
  ARM: at91: Fix USBA gadget registration
  atmel/spi: fix missing probe
  at91/yl-9200: Fix section mismatch
  at91: vmalloc fix missing AT91_VIRT_BASE define
  ARM: at91: usart: drop static map regs for dbgu
  ARM: picoxcell: add extra temp register to addruart
  ARM: msm: fix compilation flags for MSM_SCM
  arm/mxs: fix mmc device adding for mach-mx28evk
  ARM: mxc: Remove test_for_ltirq
  ARM:i.MX: fix build error in clock-mx51-mx53.c
  ARM:i.MX: fix build error in tzic/avic.c
  ARM: mxc: fix local timer interrupt handling
  msm: boards: Fix fallout from removal of machine_desc in fixup

The variable i is removed by commit ded84337
"[CPUFREQ] db8500: remove unneeded for loop iteration over freq_table",
but current code to print available frequencies still uses the i variable.
Thus add the i variable back to fix below buld error:

  CC      drivers/cpufreq/db8500-cpufreq.o
drivers/cpufreq/db8500-cpufreq.c: In function 'db8500_cpufreq_init':
drivers/cpufreq/db8500-cpufreq.c:123: error: 'i' undeclared (first use in this function)
drivers/cpufreq/db8500-cpufreq.c:123: error: (Each undeclared identifier is reported only once
drivers/cpufreq/db8500-cpufreq.c:123: error: for each function it appears in.)
make[2]: *** [drivers/cpufreq/db8500-cpufreq.o] Error 1
make[1]: *** [drivers/cpufreq] Error 2
make: *** [drivers] Error 2

This patch also fixes using uninitialized i variable as array index.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NDave Jones <davej@redhat.com>

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: (29 commits)
  m68k/mac: Remove mac_irq_{en,dis}able() wrappers
  m68k/irq: Remove obsolete support for user vector interrupt fixups
  m68k/irq: Remove obsolete m68k irq framework
  m68k/q40: Convert Q40/Q60 to genirq
  m68k/sun3: Convert Sun3/3x to genirq
  m68k/sun3: Use the kstat_irqs_cpu() wrapper
  m68k/apollo: Convert Apollo to genirq
  m68k/vme: Convert VME to genirq
  m68k/hp300: Convert HP9000/300 and HP9000/400 to genirq
  m68k/mac: Optimize interrupts using chain handlers
  m68k/mac: Convert Mac to genirq
  m68k/amiga: Optimize interrupts using chain handlers
  m68k/amiga: Convert Amiga to genirq
  m68k/amiga: Refactor amiints.c
  m68k/atari: Remove code and comments about different irq types
  m68k/atari: Convert Atari to genirq
  m68k/irq: Add genirq support
  m68k/irq: Remove obsolete IRQ_FLG_* users
  m68k/irq: Rename {,__}m68k_handle_int()
  m68k/irq: Add m68k_setup_irq_controller()
  ...

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] v4l2-ctrl: Send change events to all fh for auto cluster slave controls
  [media] v4l2-event: Don't set sev->fh to NULL on unsubscribe
  [media] v4l2-event: Remove pending events from fh event queue when unsubscribing
  [media] v4l2-event: Deny subscribing with a type of V4L2_EVENT_ALL
  [media] MAINTAINERS: add a maintainer for s5p-mfc driver
  [media] v4l: s5p-mfc: fix reported capabilities
  [media] media: vb2: reset queued list on REQBUFS(0) call
  [media] media: vb2: set buffer length correctly for all buffer types
  [media] media: vb2: add a check for uninitialized buffer
  [media] mxl111sf: fix build warning
  [media] mxl111sf: remove pointless if condition in mxl111sf_config_spi
  [media] mxl111sf: check for errors after mxl111sf_write_reg in mxl111sf_idac_config
  [media] mxl111sf: fix return value of mxl111sf_idac_config
  [media] uvcvideo: GET_RES should only be checked for BITMAP type menu controls

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/kvm: Fix build failure with HV KVM and CBE
  powerpc/ps3: Fix lv1_gpu_attribute hcall
  powerpc/ps3: Fix PS3 repository build warnings
  powerpc/ps3: irq: Remove IRQF_DISABLED
  powerpc/irq: Remove IRQF_DISABLED
  powerpc/numa: NUMA topology support for PowerNV
  powerpc: Add System RAM to /proc/iomem
  powerpc: Add KVM as module to defconfigs
  powerpc/kvm: Fix build with older toolchains
  powerpc, tqm5200: update tqm5200_defconfig to fit for charon board.
  powerpc/5200: add support for charon board

* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kbuild: Fix missing system calls check on mips.

This needed the sfi IRQ 0xFF fix to go in first. It simply plumbs in the
bma023 driver with the firmware naming of it.
Signed-off-by: NWilliam Douglas <william.douglas@intel.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Real world year equals the value in vrtc YEAR register plus an offset.
We used 1960 as the offset to make leap year consistent, but for a
device's first use, its YEAR register is 0 and the system year will
be parsed as 1960 which is not a valid UNIX time and will cause many
applications to fail mysteriously. So we use 1972 instead to fix this
issue.

Updated patch which adds a sanity check suggested by Mathias

This isn't a change in behaviour for systems, because 1972 is the one we
actually use. It's the old version in upstream which is out of sync with
all devices.
Signed-off-by: NFeng Tang <feng.tang@intel.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Fix a build error. CE4100 with no serial errors because the alternate
function is only a prototype not a null function as intended.
Signed-off-by: NZhang Rui <rui.zhang@intel.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* 'upstream-linus' of git://github.com/jgarzik/libata-dev:
  pata_of_platform: Don't use NO_IRQ
  [libata] ahci: Add ASMedia ASM1061 support
  [libata] Issue SRST to Sil3726 PMP
  sata_sis.c: trivial spelling fix
  ahci_platform: use dev_get_platdata()
  [libata] libata-scsi.c: Add function parameter documentation

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  btrfs: rename the option to nospace_cache
  Btrfs: handle bio_add_page failure gracefully in scrub
  Btrfs: fix deadlock caused by the race between relocation
  Btrfs: only map pages if we know we need them when reading the space cache
  Btrfs: fix orphan backref nodes
  Btrfs: Abstract similar code for btrfs_block_rsv_add{, _noflush}
  Btrfs: fix unreleased path in btrfs_orphan_cleanup()
  Btrfs: fix no reserved space for writing out inode cache
  Btrfs: fix nocow when deleting the item
  Btrfs: tweak the delayed inode reservations again
  Btrfs: rework error handling in btrfs_mount()
  Btrfs: close devices on all error paths in open_ctree()
  Btrfs: avoid null dereference and leaks when bailing from open_ctree()
  Btrfs: fix subvol_name leak on error in btrfs_mount()
  Btrfs: fix memory leak in btrfs_parse_early_options()
  Btrfs: fix our reservations for updating an inode when completing io
  Btrfs: fix oops on NULL trans handle in btrfs_truncate
  btrfs: fix double-free 'tree_root' in 'btrfs_mount()'

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: usb-audio: Use kmemdup rather than duplicating its implementation
  ALSA: hda - Re-enable the check NO_PRESENCE misc bit
  ALSA: vmaster - Free slave-links when freeing the master element
  ALSA: hda - Don't add elements of other codecs to vmaster slave
  ALSA: intel8x0: improve virtual environment detection
  ALSA: intel8x0: move virtual environment detection code into one place
  ALSA: snd_usb_audio: add Logitech HD Webcam c510 to quirk-384
  ALSA: hda - fix internal mic on Dell Vostro 3500 laptop
  ALSA: HDA: Remove quirk for Toshiba T110
  ALSA: usb-audio - Fix the missing volume quirks at delayed init
  ALSA: hda - Mute unused capture sources for Realtek codecs
  ALSA: intel8x0: Improve comments for VM optimization
  ASoC: Ensure we get an impedence reported for WM8958 jack detect
  ASoC: Don't use wm8994->control_data when requesting IRQs
  ASoC: Don't use wm8994->control_data in wm8994_readable_register()
  ASoC: Update git repository URL

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (42 commits)
  drm/radeon/kms/pm: switch to dynamically allocating clock mode array
  drm/radeon/kms: optimize r600_pm_profile_init
  drm/radeon/kms/pm: add a proper pm profile init function for fusion
  drm/radeon/kms: remove extraneous calls to radeon_pm_compute_clocks()
  drm/exynos: added padding to be 64-bit align.
  drm: fix kconfig unmet dependency warning
  drm: add some comments to drm_wait_vblank and drm_queue_vblank_event
  drm/radeon/benchmark: signedness bug in radeon_benchmark_move()
  drm: do not sleep on vblank while holding a mutex
  MAINTAINERS: exynos: Add EXYNOS DRM maintainer entry
  drm: try to restore previous CRTC config if mode set fails
  drm/radeon/kms: make an aux failure debug only
  drm: drop select of SLOW_WORK
  drm: serialize access to list of debugfs files
  drm/radeon/kms: fix use of vram scratch page on evergreen/ni
  drm/radeon: Make sure CS mutex is held across GPU reset.
  drm: Ensure string is null terminated.
  vmwgfx: Only allow 64x64 cursors
  vmwgfx: Initialize clip rect loop correctly in surface dirty
  vmwgfx: Close screen object system
  ...

* git://github.com/herbertx/crypto:
  crypto: algapi - Fix build problem with NET disabled
  crypto: user - Fix rwsem leak in crypto_user

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: fix force shutdown handling in xfs_end_io
  xfs: constify xfs_item_ops
  xfs: Fix possible memory corruption in xfs_readlink

The following error is seen in some case when mounting rootfs from
SD/MMC cards.

  Waiting for root device /dev/mmcblk0p1...
  mmc1: host does not support reading read-only switch. assuming write-enable.
  mmc1: new high speed SDHC card at address b368
  mmcblk0: mmc1:b368 SDC   3.74 GiB
   mmcblk0: p1
  mmc1: Timeout waiting for hardware interrupt.
  mmcblk0: error -110 transferring data, sector 3678224, nr 40, cmd response 0x900, card status 0xc00
  end_request: I/O error, dev mmcblk0, sector 3678225
  Buffer I/O error on device mmcblk0p1, logical block 458754
  lost page write due to I/O error on mmcblk0p1

This patch fixes the problem by lowering the usdhc clock and correcting
watermark configuration.
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
Cc: Chris Ball <cjb@laptop.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

The AUTO_ZRELADDR selection for ARCH_IMX_V4_V5 and ARCH_MX5 should
really be mutually exclusive to ZBOOT_ROM just like what ARCH_IMX_V6_V7
does.
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

The config symbol ARCH_MX3 has been removed by commit 'a89cf59b
arm/imx: merge i.MX3 and i.MX6', and it should not be referenced
any more.

The patch also change ARCH_MX* to SOC_IMX* for other platforms.
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: NRichard Zhao <richard.zhao@linaro.org>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Rename no_space_cache option to nospace_cache to be more consistent with
the rest, where the simple prefix 'no' is used to negate an option.

The option has been introduced during the -rc1 cycle and there are has not been
widely used, so it's safe.
Signed-off-by: NDavid Sterba <dsterba@suse.cz>
Signed-off-by: NChris Mason <chris.mason@oracle.com>

On newer chips the number of clock modes per power state varies.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Avoid a lot of extra loops through the pm state array.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

The new power tables need to be handled differently when setting
up the profiles.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

It's already called via the DPMS functions.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Currently scrub fails with ENOMEM when bio_add_page fails. Unfortunately
dm based targets accept only one page per bio, thus making scrub always
fails. This patch just submits the current bio when an error is encountered
and starts a new one.
Signed-off-by: NArne Jansen <sensille@gmx.net>
Signed-off-by: NChris Mason <chris.mason@oracle.com>

Signed-off-by: NInki Dae <inki.dae@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Fix kconfig unmet dependency warning.  BACKLIGHT_CLASS_DEVICE depends on
BACKLIGHT_LCD_SUPPORT, so select the latter along with the former.

warning: (DRM_RADEON_KMS && DRM_I915 && STUB_POULSBO && FB_BACKLIGHT && PANEL_SHARP_LS037V7DW01 && PANEL_ACX565AKM && USB_APPLEDISPLAY && FB_OLPC_DCON && ASUS_LAPTOP && SONY_LAPTOP && THINKPAD_ACPI && EEEPC_LAPTOP && ACPI_ASUS && ACPI_CMPC && SAMSUNG_Q10) selects BACKLIGHT_CLASS_DEVICE which has unmet direct dependencies (HAS_IOMEM && BACKLIGHT_LCD_SUPPORT)
Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDave Airlie <airlied@redhat.com>

* 'drm-nouveau-fixes' of git://git.freedesktop.org/git/nouveau/linux-2.6:
  drm/nouveau: Fix bandwidth calculation for DisplayPort
  drm/nouveau: by default use low bpp framebuffer on low memory cards
  drm/nv10: Change the BO size threshold determining the memory placement range.
  drm/nvc0: enable acceleration for nvc1 by default
  drm/nvc0/gr: fixup the mmio list register writes for 0xc1
  drm/nvc1: hacky workaround to fix accel issues
  drm/nvc0/gr: fix some bugs in grctx generation
  drm/nvc0: enable acceleration on 0xc8 by default
  drm/nvc0/vram: skip disabled PBFB subunits
  drm/nv40/pm: fix issues on igp chipsets, which don't have memory
  drm/nouveau: testing the wrong variable
  drm/nvc0/vram: storage type 0xc3 is not compressed
  drm/nv50: fix stability issue on NV86.
  drm/nouveau: initialize chan->fence.lock before use
  drm/nv50/vram: fix incorrect detection of bank count on newer chipsets
  drm/nv50/gr: typo fix, how about we not reset fifo during graph init?
  drm/nv50/bios: fixup mpll programming from the init table parser
  drm/nouveau: fix oops if i2c bus not found in nouveau_i2c_identify()
  drm: make sure drm_vblank_init() has been called before touching vbl_lock

during the review of the fix for locks problems in drm_wait_vblank,
a couple of false concerns were raised about how the drm_vblank_get
and drm_vblank_put are used in this function; it turned out that the
code is correct and that it cannot be simplified

add a few comments to explain non-obvious flows in the code,
to prevent "false alarms" in the future

v2: incorporate comments received from Daniel Vetter
Signed-off-by: NIlija Hadzic <ihadzic@research.bell-labs.com>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NDave Airlie <airlied@redhat.com>

radeon_benchmark_do_move() returns an int so "time" should be int
too.  Making it unsigned breaks the error handling.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

drm_wait_vblank must be DRM_UNLOCKED because otherwise it
will grab the drm_global_mutex and then go to sleep until the vblank
event it is waiting for. That can wreck havoc in the windowing system
because if one process issues this ioctl, it will block all other
processes for the duration of all vblanks between the current and the
one it is waiting for. In some cases it can block the entire windowing
system.

v2: incorporate comments received from Daniel Vetter and
    Michel Daenzer.

v3/v4: after a lengty discussion with Daniel Vetter, it was concluded
       that the only thing not yet protected with locks and atomic
       ops is the write to dev->last_vblank_wait. It's only used in a
       debug file in proc, and the current code already employs no
       correct locking: the proc file only takes dev->struct_mutex,
       whereas drm_wait_vblank implicitly took the drm_global_mutex.
       Given all this, it's not worth bothering to try to fix
       the locks at this time.
Signed-off-by: NIlija Hadzic <ihadzic@research.bell-labs.com>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NDave Airlie <airlied@redhat.com>

As Exynos DRM is merged at mainline. Also update the maintainer entry.
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>