In case of failure, mmc_attach_sdio() will power off the SD bus.
Power it up and reinitialize before trying SD memory detection.
Reported-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

Upon system resume, SDIO core must reinitialize cards that were
powered off during suspend.

If the card had its power kept during suspend (and thus it is
'powered-resumed'), SDIO core performs only a limited reinitializing,
mainly needed to make sure that the card wasn't removed/replaced.

If a __nonremovable__ card is powered-resumed, we can safely skip the
reinitializing phase.

Note: 9b966aae (mmc: sdio: fully reconfigure oldcard on resume) removed
the bus width reconfiguration since mmc_sdio_init_card already does it.
It is brought back now in case mmc_sdio_init_card is skipped.
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

Initial SDIO runtime PM implementation took a conservative approach
of powering up cards (and fully reinitializing them) on system suspend,
just before the suspend handlers of the relevant drivers were executed.

To avoid redundant power and reinitialization cycles, this patch removes
this behavior: if a card is already powered off when system suspend kicks
in, it is left at that state.

If a card is active when a system sleep starts, everything is
straightforward and works exactly like before. But if the card was
already suspended before the sleep began, then when the MMC core powers
it back up on resume, its run-time PM status has to be updated to reflect
the actual post-system sleep status.

The technique to do that is borrowed from the I2C runtime PM
implementation (for more info see Documentation/power/runtime_pm.txt).
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Reviewed-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

mmc_rescan() checks whether registered cards are still present before
skipping them, by calling the bus-specific ->detect() handler.

With buses that support runtime PM, the card may be powered off at
this point, so they need to be powered on and fully reinitialized before
->detect() executes.

This whole process is redundant with nonremovable cards; in those cases,
we can safely skip calling ->detect() and implicitly assume its success.
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Reviewed-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

JMicron 388 SD/MMC combo controller supports the 1.8V low-voltage for
SD, but MMC doesn't work with the low-voltage, resulting in an error
at probing.

This patch adds the support for multiple voltage mask per device type,
so that SD works with 1.8V while MMC forces 3.3V.  Here new ocr_avail_*
fields for each device are introduced, so that the actual OCR mask is
switched dynamically.

Also, the restriction of low-voltage in core/sd.c is removed when the
bit is allowed explicitly via ocr_avail_sd mask.

This patch was rewritten from scratch based on Aries' original code.
Signed-off-by: Aries Lee <arieslee@jmicron.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

More information should be shown when sdhci_dumpregs is called.
Knowing the command is useful for debugging, and Capability 1
is useful for SD v3.
Signed-off-by: Philip Rakity <prakity@marvell.com>
Reviewed-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

This patch modifies the MMC core code to optionally call the set_ios()
operation on the driver with the clock frequency set to 0 (gate) after
a grace period of at least 8 MCLK cycles, then restore it (ungate)
before any new request. This gives the driver the option to shut down
the MCI clock to the MMC/SD card when the clock frequency is 0, i.e.
the core has stated that the MCI clock does not need to be generated.

It is inspired by existing clock gating code found in the OMAP and
Atmel drivers and brings this up to the host abstraction.  Gating is
performed before and after any MMC request.

This patchset implements this for the MMCI/PL180 MMC/SD host controller,
but it should be simple to switch OMAP/Atmel over to using this instead.

mmc_set_{gated,ungated}() add variable protection to the state holders
for the clock gating code.  This is particularly important when ordinary
.set_ios() calls would race with the .set_ios() call resulting from a
delayed gate operation.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Reviewed-by: Chris Ball <cjb@laptop.org>
Tested-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

This patch disables the broken ADMA on selected O2Micro devices.
Signed-off-by: Jennifer Li <Jennifer.li@o2micro.com>
Reviewed-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

Remove release_resource() after release_mem_region().
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>

This also fixes the build problem introduced by my previous patch
due to unhandled API changes introduced by commit:
 99fc5131 (mmc: Move regulator handling closer to core)
Signed-off-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

This implementation is based on the pxamci.c driver and it will
be used to support the mx31_3ds machine.
Signed-off-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
CC: Saeed Bishara <saeed@marvell.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>

Implement an sdhci-pltfm driver for the controller found in the
Marvell Dove SoC.
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
CC: Saeed Bishara <saeed@marvell.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/hfsplus:
  hfsplus: %L-to-%ll, macro correction, and remove unneeded braces
  hfsplus: spaces/indentation clean-up
  hfsplus: C99 comments clean-up
  hfsplus: over 80 character lines clean-up
  hfsplus: fix an artifact in ioctl flag checking
  hfsplus: flush disk caches in sync and fsync
  hfsplus: optimize fsync
  hfsplus: split up inode flags
  hfsplus: write up fsync for directories
  hfsplus: simplify fsync
  hfsplus: avoid useless work in hfsplus_sync_fs
  hfsplus: make sure sync writes out all metadata
  hfsplus: use raw bio access for partition tables
  hfsplus: use raw bio access for the volume headers
  hfsplus: always use hfsplus_sync_fs to write the volume header
  hfsplus: silence a few debug printks
  hfsplus: fix option parsing during remount

Fix up conflicts due to VFS changes in fs/hfsplus/{hfsplus_fs.h,unicode.c}

* 'next-spi' of git://git.secretlab.ca/git/linux-2.6: (77 commits)
  spi/omap: Fix DMA API usage in OMAP MCSPI driver
  spi/imx: correct the test on platform_get_irq() return value
  spi/topcliff: Typo fix threhold to threshold
  spi/dw_spi Typo change diable to disable.
  spi/fsl_espi: change the read behaviour of the SPIRF
  spi/mpc52xx-psc-spi: move probe/remove to proper sections
  spi/dw_spi: add DMA support
  spi/dw_spi: change to EXPORT_SYMBOL_GPL for exported APIs
  spi/dw_spi: Fix too short timeout in spi polling loop
  spi/pl022: convert running variable
  spi/pl022: convert busy flag to a bool
  spi/pl022: pass the returned sglen to the DMA engine
  spi/pl022: map the buffers on the DMA engine
  spi/topcliff_pch: Fix data transfer issue
  spi/imx: remove autodetection
  spi/pxa2xx: pass of_node to spi device and set a parent device
  spi/pxa2xx: Modify RX-Tresh instead of busy-loop for the remaining RX bytes.
  spi/pxa2xx: Add chipselect support for Sodaville
  spi/pxa2xx: Consider CE4100's FIFO depth
  spi/pxa2xx: Add CE4100 support
  ...

* 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (30 commits)
  gameport: use this_cpu_read instead of lookup
  x86: udelay: Use this_cpu_read to avoid address calculation
  x86: Use this_cpu_inc_return for nmi counter
  x86: Replace uses of current_cpu_data with this_cpu ops
  x86: Use this_cpu_ops to optimize code
  vmstat: User per cpu atomics to avoid interrupt disable / enable
  irq_work: Use per cpu atomics instead of regular atomics
  cpuops: Use cmpxchg for xchg to avoid lock semantics
  x86: this_cpu_cmpxchg and this_cpu_xchg operations
  percpu: Generic this_cpu_cmpxchg() and this_cpu_xchg support
  percpu,x86: relocate this_cpu_add_return() and friends
  connector: Use this_cpu operations
  xen: Use this_cpu_inc_return
  taskstats: Use this_cpu_ops
  random: Use this_cpu_inc_return
  fs: Use this_cpu_inc_return in buffer.c
  highmem: Use this_cpu_xx_return() operations
  vmstat: Use this_cpu_inc_return for vm statistics
  x86: Support for this_cpu_add, sub, dec, inc_return
  percpu: Generic support for this_cpu_add, sub, dec, inc_return
  ...

Fixed up conflicts: in arch/x86/kernel/{apic/nmi.c, apic/x2apic_uv_x.c, process.c}
as per Tejun.

* 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (33 commits)
  usb: don't use flush_scheduled_work()
  speedtch: don't abuse struct delayed_work
  media/video: don't use flush_scheduled_work()
  media/video: explicitly flush request_module work
  ioc4: use static work_struct for ioc4_load_modules()
  init: don't call flush_scheduled_work() from do_initcalls()
  s390: don't use flush_scheduled_work()
  rtc: don't use flush_scheduled_work()
  mmc: update workqueue usages
  mfd: update workqueue usages
  dvb: don't use flush_scheduled_work()
  leds-wm8350: don't use flush_scheduled_work()
  mISDN: don't use flush_scheduled_work()
  macintosh/ams: don't use flush_scheduled_work()
  vmwgfx: don't use flush_scheduled_work()
  tpm: don't use flush_scheduled_work()
  sonypi: don't use flush_scheduled_work()
  hvsi: don't use flush_scheduled_work()
  xen: don't use flush_scheduled_work()
  gdrom: don't use flush_scheduled_work()
  ...

Fixed up trivial conflict in drivers/media/video/bt8xx/bttv-input.c
as per Tejun.

Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Constify function scope static struct sched_param usage
  sched: Fix strncmp operation
  sched: Move sched_autogroup_exit() to free_signal_struct()
  sched: Fix struct autogroup memory leak
  sched: Mark autogroup_init() __init
  sched: Consolidate the name of root_task_group and init_task_group

Merge branch 'x86-apic-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-apic-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: apic: Cleanup and simplify setup_local_APIC()
  x86: Further simplify mp_irq info handling
  x86: Unify 3 similar ways of saving mp_irqs info
  x86, ioapic: Avoid writing io_apic id if already correct
  x86, x2apic: Don't map lapic addr for preenabled x2apic systems
  x86, sfi: Use register_lapic_address()
  x86, apic: Use register_lapic_address() in init_apic_mapping()
  x86, apic: Remove early_init_lapic_mapping()
  x86, apic: Unify identical register_lapic_address() functions

* 'mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC, MCE: Fix NB error formatting
  EDAC, MCE: Use BIT_64() to eliminate warnings on 32-bit
  EDAC, MCE: Enable MCE decoding on F15h
  EDAC, MCE: Allow F15h bank 6 MCE injection
  EDAC, MCE: Shorten error report formatting
  EDAC, MCE: Overhaul error fields extraction macros
  EDAC, MCE: Add F15h FP MCE decoder
  EDAC, MCE: Add F15 EX MCE decoder
  EDAC, MCE: Add an F15h NB MCE decoder
  EDAC, MCE: No F15h LS MCE decoder
  EDAC, MCE: Add F15h CU MCE decoder
  EDAC, MCE: Add F15h IC MCE decoder
  EDAC, MCE: Add F15h DC MCE decoder
  EDAC, MCE: Select extended error code mask

* 'edac-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  amd64_edac: Disable DRAM ECC injection on K8
  EDAC: Fixup scrubrate manipulation
  amd64_edac: Remove two-stage initialization
  amd64_edac: Check ECC capabilities initially
  amd64_edac: Carve out ECC-related hw settings
  amd64_edac: Remove PCI ECS enabling functions
  amd64_edac: Remove explicit Kconfig PCI dependency
  amd64_edac: Allocate driver instances dynamically
  amd64_edac: Rework printk macros
  amd64_edac: Rename CPU PCI devices
  amd64_edac: Concentrate per-family init even more
  amd64_edac: Cleanup the CPU PCI device reservation
  amd64_edac: Simplify CPU family detection
  amd64_edac: Add per-family init function
  amd64_edac: Use cached extended CPU model
  amd64_edac: Remove F11h support

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (65 commits)
  [S390] prevent unneccesary loops_per_jiffy recalculation
  [S390] cpuinfo: use get_online_cpus() instead of preempt_disable()
  [S390] smp: remove cpu hotplug messages
  [S390] mutex: enable spinning mutex on s390
  [S390] mutex: Introduce arch_mutex_cpu_relax()
  [S390] cio: fix ccwgroup unregistration race condition
  [S390] perf: add DWARF register lookup for s390
  [S390] cleanup ftrace backend functions
  [S390] ptrace cleanup
  [S390] smp/idle: call init_idle() before starting a new cpu
  [S390] smp: delay idle task creation
  [S390] dasd: Correct retry counter for terminated I/O.
  [S390] dasd: Add support for raw ECKD access.
  [S390] dasd: Prevent deadlock during suspend/resume.
  [S390] dasd: Improve handling of stolen DASD reservation
  [S390] dasd: do path verification for paths added at runtime
  [S390] dasd: add High Performance FICON multitrack support
  [S390] cio: reduce memory consumption of itcw structures
  [S390] nmi: enable machine checks early
  [S390] qeth: buffer count imbalance
  ...

* 'rmobile-latest' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (67 commits)
  ARM: mach-shmobile: update for SMP changes.
  ARM: mach-shmobile: update for GIC changes.
  ARM: mach-shmobile: Fix up clkdev fallout for SH73A0.
  dma: shdma: don't register the global die notifier multiple times
  ARM: mach-shmobile: Rely on run-time IRQ handlers
  ARM: mach-shmobile: Run-time IRQ handler for GIC
  ARM: mach-shmobile: Run-time IRQ handler for INTCA
  ARM: mach-shmobile: Enable CONFIG_MULTI_IRQ_HANDLER
  ARM: mach-shmobile: Use shared GIC entry macros
  ARM: mach-shmobile: mackerel: Add zboot support
  ARM: mach-shmobile: mackerel: Add HDMI sound support
  ARM: mach-shmobile: mackerel: add HDMI video support
  ARM: mach-shmobile: ap4evb: fixup clk_put timing of fsib_clk
  ARM: mach-shmobile: sh73a0: fix div4 table
  ARM: mach-shmobile: ap4/mackerel: modify wrong comment out of USB
  ARM: mach-shmobile: Mackerel VGA camera support
  mmc: sh_mmcif: make DMA support by the driver unconditional
  ARM: mach-shmobile: Add eMMC support through MMCIF on AG5EVM
  ARM: mach-shmobile: Use pullups for AG5EVM KEYSC pins
  ARM: mach-shmobile: sh73a0 GPIO pullup improvement
  ...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (58 commits)
  Input: wacom_w8001 - support pen or touch only devices
  Input: wacom_w8001 - use __set_bit to set keybits
  Input: bu21013_ts - fix misuse of logical operation in place of bitop
  Input: i8042 - add Acer Aspire 5100 to the Dritek list
  Input: wacom - add support for digitizer in Lenovo W700
  Input: psmouse - disable the synaptics extension on OLPC machines
  Input: psmouse - fix up Synaptics comment
  Input: synaptics - ignore bogus mt packet
  Input: synaptics - add multi-finger and semi-mt support
  Input: synaptics - report clickpad property
  input: mt: Document interface updates
  Input: fix double equality sign in uevent
  Input: introduce device properties
  hid: egalax: Add support for Wetab (726b)
  Input: include MT library as source for kerneldoc
  MAINTAINERS: Update input-mt entry
  hid: egalax: Add support for Samsung NB30 netbook
  hid: egalax: Document the new devices in Kconfig
  hid: egalax: Add support for Wetab
  hid: egalax: Convert to MT slots
  ...

Fixed up trivial conflict in drivers/input/keyboard/Kconfig

* 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (36 commits)
  serial: apbuart: Fixup apbuart_console_init()
  TTY: Add tty ioctl to figure device node of the system console.
  tty: add 'active' sysfs attribute to tty0 and console device
  drivers: serial: apbuart: Handle OF failures gracefully
  Serial: Avoid unbalanced IRQ wake disable during resume
  tty: fix typos/errors in tty_driver.h comments
  pch_uart : fix warnings for 64bit compile
  8250: fix uninitialized FIFOs
  ip2: fix compiler warning on ip2main_pci_tbl
  specialix: fix compiler warning on specialix_pci_tbl
  rocket: fix compiler warning on rocket_pci_ids
  8250: add a UPIO_DWAPB32 for 32 bit accesses
  8250: use container_of() instead of casting
  serial: omap-serial: Add support for kernel debugger
  serial: fix pch_uart kconfig & build
  drivers: char: hvc: add arm JTAG DCC console support
  RS485 documentation: add 16C950 UART description
  serial: ifx6x60: fix memory leak
  serial: ifx6x60: free IRQ on error
  Serial: EG20T: add PCH_UART driver
  ...

Fixed up conflicts in drivers/serial/apbuart.c with evil merge that
makes the code look fairly sane (unlike either side).

* 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (144 commits)
  USB: add support for Dream Cheeky DL100B Webmail Notifier (1d34:0004)
  USB: serial: ftdi_sio: add support for TIOCSERGETLSR
  USB: ehci-mxc: Setup portsc register prior to accessing OTG viewport
  USB: atmel_usba_udc: fix freeing irq in usba_udc_remove()
  usb: ehci-omap: fix tll channel enable mask
  usb: ohci-omap3: fix trivial typo
  USB: gadget: ci13xxx: don't assume that PAGE_SIZE is 4096
  USB: gadget: ci13xxx: fix complete() callback for no_interrupt rq's
  USB: gadget: update ci13xxx to work with g_ether
  USB: gadgets: ci13xxx: fix probing of compiled-in gadget drivers
  Revert "USB: musb: pm: don't rely fully on clock support"
  Revert "USB: musb: blackfin: pm: make it work"
  USB: uas: Use GFP_NOIO instead of GFP_KERNEL in I/O submission path
  USB: uas: Ensure we only bind to a UAS interface
  USB: uas: Rename sense pipe and sense urb to status pipe and status urb
  USB: uas: Use kzalloc instead of kmalloc
  USB: uas: Fix up the Sense IU
  usb: musb: core: kill unneeded #include's
  DA8xx: assign name to MUSB IRQ resource
  usb: gadget: g_ncm added
  ...

Manually fix up trivial conflicts in USB Kconfig changes in:
	arch/arm/mach-omap2/Kconfig
	arch/sh/Kconfig
	drivers/usb/Kconfig
	drivers/usb/host/ehci-hcd.c
and annoying chip clock data conflicts in:
	arch/arm/mach-omap2/clock3xxx_data.c
	arch/arm/mach-omap2/clock44xx_data.c

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (147 commits)
  [SCSI] arcmsr: fix write to device check
  [SCSI] lpfc: lower stack use in lpfc_fc_frame_check
  [SCSI] eliminate an unnecessary local variable from scsi_remove_target()
  [SCSI] libiscsi: use bh locking instead of irq with session lock
  [SCSI] libiscsi: do not take host lock in queuecommand
  [SCSI] be2iscsi: fix null ptr when accessing task hdr
  [SCSI] be2iscsi: fix gfp use in alloc_pdu
  [SCSI] libiscsi: add more informative failure message during iscsi scsi eh
  [SCSI] gdth: Add missing call to gdth_ioctl_free
  [SCSI] bfa: remove unused defintions and misc cleanups
  [SCSI] bfa: remove inactive functions
  [SCSI] bfa: replace bfa_assert with WARN_ON
  [SCSI] qla2xxx: Use sg_next to fetch next sg element while walking sg list.
  [SCSI] qla2xxx: Fix to avoid recursive lock failure during BSG timeout.
  [SCSI] qla2xxx: Remove code to not reset ISP82xx on failure.
  [SCSI] qla2xxx: Display mailbox register 4 during 8012 AEN for ISP82XX parts.
  [SCSI] qla2xxx: Don't perform a BIG_HAMMER if Get-ID (0x20) mailbox command fails on CNAs.
  [SCSI] qla2xxx: Remove redundant module parameter permission bits
  [SCSI] qla2xxx: Add sysfs node for displaying board temperature.
  [SCSI] qla2xxx: Code cleanup to remove unwanted comments and code.
  ...

There was a semi-colon missing and it broke the compile.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Running the latest kernel on the 4430SDP board with DMA API debugging
enabled results in this:

WARNING: at lib/dma-debug.c:803 check_unmap+0x19c/0x6f0()
NULL NULL: DMA-API: device driver tries to free DMA memory it has not allocated
[device address=0x000000008129901a] [size=260 bytes]
Modules linked in:
Backtrace:
[<c003cbe0>] (dump_backtrace+0x0/0x10c) from [<c0278da8>] (dump_stack+0x18/0x1c)
 r7:c1839dc0 r6:c0198578 r5:c0304b17 r4:00000323
[<c0278d90>] (dump_stack+0x0/0x1c) from [<c005b158>] (warn_slowpath_common+0x58/0x70)
[<c005b100>] (warn_slowpath_common+0x0/0x70) from [<c005b214>] (warn_slowpath_fmt+0x38/0x40)
 r8:c1839e40 r7:00000000 r6:00000104 r5:00000000 r4:8129901a
[<c005b1dc>] (warn_slowpath_fmt+0x0/0x40) from [<c0198578>] (check_unmap+0x19c/0x6f0)
 r3:c03110de r2:c0304e6b
[<c01983dc>] (check_unmap+0x0/0x6f0) from [<c0198cd8>] (debug_dma_unmap_page+0x74/0x80)
[<c0198c64>] (debug_dma_unmap_page+0x0/0x80) from [<c01d5ad8>] (omap2_mcspi_work+0x514/0xbf0)
[<c01d55c4>] (omap2_mcspi_work+0x0/0xbf0) from [<c006dfb0>] (process_one_work+0x294/0x400)
[<c006dd1c>] (process_one_work+0x0/0x400) from [<c006e50c>] (worker_thread+0x220/0x3f8)
[<c006e2ec>] (worker_thread+0x0/0x3f8) from [<c00738d0>] (kthread+0x88/0x90)
[<c0073848>] (kthread+0x0/0x90) from [<c005e924>] (do_exit+0x0/0x5fc)
 r7:00000013 r6:c005e924 r5:c0073848 r4:c1829ee0
---[ end trace 1b75b31a2719ed20 ]---

I've no idea why this driver uses NULL for dma_unmap_single instead of
the &spi->dev that is laying around just waiting to be used in that
function - but it's an easy fix.

Also replace this comment with a FIXME comment:
                /* Do DMA mapping "early" for better error reporting and
                 * dcache use.  Note that if dma_unmap_single() ever starts
                 * to do real work on ARM, we'd need to clean up mappings
                 * for previous transfers on *ALL* exits of this loop...
                 */
as the comment is not true - we do work in dma_unmap() functions,
particularly on ARMv6 and above.  I've corrected the existing unmap
functions but if any others are required they must be added ASAP.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

The test "if (spi_imx->irq <= 0)" is not testing the IRQ value, but
the return value of platform_get_irq().  As platform_get_irq() can
return an error (-ENXIO) or the IRQ value it found, the test should be
"if (spi_imx->irq < 0)"

[grant.likely: Note: In general, Linux irq number 0 should also mean
no irq, but arm still allows devices to be assigned 0, and the imx
platform uses 0 for one of the spi devices, so this patch is needed
for the device to work]
Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

Merge branch 'vfs-scale-working' of git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin

* 'vfs-scale-working' of git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin: (57 commits)
  fs: scale mntget/mntput
  fs: rename vfsmount counter helpers
  fs: implement faster dentry memcmp
  fs: prefetch inode data in dcache lookup
  fs: improve scalability of pseudo filesystems
  fs: dcache per-inode inode alias locking
  fs: dcache per-bucket dcache hash locking
  bit_spinlock: add required includes
  kernel: add bl_list
  xfs: provide simple rcu-walk ACL implementation
  btrfs: provide simple rcu-walk ACL implementation
  ext2,3,4: provide simple rcu-walk ACL implementation
  fs: provide simple rcu-walk generic_check_acl implementation
  fs: provide rcu-walk aware permission i_ops
  fs: rcu-walk aware d_revalidate method
  fs: cache optimise dentry and inode for rcu-walk
  fs: dcache reduce branches in lookup path
  fs: dcache remove d_mounted
  fs: fs_struct use seqlock
  fs: rcu-walk for path lookup
  ...

Function-scope statics are discouraged because they are
easily overlooked and can cause subtle bugs/races due to
their global (non-SMP safe) nature.

Linus noticed that we did this for sched_param - at minimum
make the const.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: Message-ID: <AANLkTinotRxScOHEb0HgFgSpGPkq_6jKTv5CfvnQM=ee@mail.gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

One of the operands, buf, is incorrect, since it is stripped and the
correct address for subsequent string comparing could change if
leading white spaces, if any, are removed from buf.

It is fixed by replacing buf with cmp.
Signed-off-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <AANLkTinOPuYsVovrZpbuCCmG5deEyc8WgA_A1RJx_YK7@mail.gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Per Oleg's suggestion, undo fork failure free/put_signal_struct change,
and move sched_autogroup_exit() to free_signal_struct() instead.
Signed-off-by: Mike Galbraith <efault@gmx.de>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1294222564.8369.6.camel@marge.simson.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Seems I lost a change somewhere, leaking memory.

sched: fix struct autogroup memory leak

Add missing change to actually use autogroup_free().
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1294222285.8369.2.camel@marge.simson.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

autogroup_init() is only called at boot time.
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1294375425-31065-1-git-send-email-yong.zhang0@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

root_task_group is the leftover of USER_SCHED, now it's always
same to init_task_group.
But as Mike suggested, root_task_group is maybe the suitable name
to keep for a tree.
So in this patch:
  init_task_group      --> root_task_group
  init_task_group_load --> root_task_group_load
  INIT_TASK_GROUP_LOAD --> ROOT_TASK_GROUP_LOAD
Suggested-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20110107071736.GA32635@windriver.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Conflicts:
	arch/x86/include/asm/io_apic.h

Merge reason: Resolve the conflict, update to a more recent -rc base
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Minor formatting fixup since the information which core was associated
with the MCE is not always valid.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>