Pull arm-soc: soc specific changes (part 2) from Olof Johansson:
 "This adds support for the spear13xx platform, which has first been
  under review a long time ago and finally been completed after generic
  spear work has gone into the clock, dt and pinctrl branches.

  Also a number of updates for the samsung socs are part of this branch."

Fix up trivial conflicts in drivers/gpio/gpio-samsung.c that look much
worse than they are: the exonys5 init code was refactored in commit
fd454997 ("gpio: samsung: refactor gpiolib init for exynos4/5"), and
then commit f10590c9 ("ARM: EXYNOS: add GPC4 bank instance") added a
new gpio chip define and did tiny updates to the init code.

So the conflict diff looks like hell, but it's actually a fairly simple
change.

* tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (34 commits)
  ARM: exynos: fix building with CONFIG_OF disabled
  ARM: EXYNOS: Add AUXDATA for i2c controllers
  ARM: dts: Update device tree source files for EXYNOS5250
  ARM: EXYNOS: Add device tree support for interrupt combiner
  ARM: EXYNOS: Add irq_domain support for interrupt combiner
  ARM: EXYNOS: Remove a new bus_type instance for EXYNOS5
  ARM: EXYNOS: update irqs for EXYNOS5250 SoC
  ARM: EXYNOS: Add pre-divider and fout mux clocks for bpll and mpll
  ARM: EXYNOS: add GPC4 bank instance
  ARM: EXYNOS: Redefine IRQ_MCT_L0,1 definition
  ARM: EXYNOS: Modify the GIC physical address for static io-mapping
  ARM: EXYNOS: Add watchdog timer clock instance
  pinctrl: SPEAr1310: Fix pin numbers for clcd_high_res
  SPEAr: Update MAINTAINERS and Documentation
  SPEAr13xx: Add defconfig
  SPEAr13xx: Add compilation support
  SPEAr13xx: Add dts and dtsi files
  pinctrl: Add SPEAr13xx pinctrl drivers
  pinctrl: SPEAr: Create macro for declaring GPIO PINS
  SPEAr13xx: Add common clock framework support
  ...

Pull arm-soc device tree conversions (part 2) from Olof Johansson:
 "These continue the device tree work from part 1, this set is for the
  tegra, mxs and imx platforms, all of which have dependencies on clock
  or pinctrl changes submitted earlier."

Fix up trivial conflicts due to nearby changes in
drivers/{gpio/gpio,i2c/busses/i2c}-mxs.c

* tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (73 commits)
  ARM: dt: tegra: invert status=disable vs status=okay
  ARM: dt: tegra: consistent basic property ordering
  ARM: dt: tegra: sort nodes based on bus order
  ARM: dt: tegra: remove duplicate device_type property
  ARM: dt: tegra: consistenly use lower-case for hex constants
  ARM: dt: tegra: format regs properties consistently
  ARM: dt: tegra: gpio comment cleanup
  ARM: dt: tegra: remove unnecessary unit addresses
  ARM: dt: tegra: whitespace cleanup
  ARM: dt: tegra cardhu: fix typo in SDHCI node name
  ARM: dt: tegra: cardhu: register core regulator tps62361
  ARM: dt: tegra30.dtsi: Add SMMU node
  ARM: dt: tegra20.dtsi: Add GART node
  ARM: dt: tegra30.dtsi: Add Memory Controller(MC) nodes
  ARM: dt: tegra20.dtsi: Add Memory Controller(MC) nodes
  ARM: dt: tegra: Add device tree support for AHB
  ARM: dts: enable audio support for imx28-evk
  ARM: dts: enable i2c device for imx28-evk
  i2c: mxs: add device tree probe support
  ARM: dts: enable mmc for imx28-evk
  ...

Pull arm-soc stmp-dev library code from Olof Johansson:
 "A number of devices are using a common register layout, this adds
  support code for it in lib/stmp_device.c so we do not need to
  duplicate it in each driver."

Fix up trivial conflicts in drivers/i2c/busses/i2c-mxs.c and
lib/Makefile

* tag 'stmp-dev' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  i2c: mxs: use global reset function
  lib: add support for stmp-style devices

Pull arm-soc clock driver changes from Olof Johansson:
 "The new clock subsystem was merged in linux-3.4 without any users,
  this now moves the first three platforms over to it: imx, mxs and
  spear.

  The series also contains the changes for the clock subsystem itself,
  since Mike preferred to have it together with the platforms that
  require these changes, in order to avoid interdependencies and
  conflicts."

Fix up trivial conflicts in arch/arm/mach-kirkwood/common.c (code
removed in one branch, added OF support in another) and
drivers/dma/imx-sdma.c (independent changes next to each other).

* tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits)
  clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
  clk: Provide dummy clk_unregister()
  SPEAr: Update defconfigs
  SPEAr: Add SMI NOR partition info in dts files
  SPEAr: Switch to common clock framework
  SPEAr: Call clk_prepare() before calling clk_enable
  SPEAr: clk: Add General Purpose Timer Synthesizer clock
  SPEAr: clk: Add Fractional Synthesizer clock
  SPEAr: clk: Add Auxiliary Synthesizer clock
  SPEAr: clk: Add VCO-PLL Synthesizer clock
  SPEAr: Add DT bindings for SPEAr's timer
  ARM i.MX: remove now unused clock files
  ARM: i.MX6: implement clocks using common clock framework
  ARM i.MX35: implement clocks using common clock framework
  ARM i.MX5: implement clocks using common clock framework
  ARM: Kirkwood: Replace clock gating
  ARM: Orion: Audio: Add clk/clkdev support
  ARM: Orion: PCIE: Add support for clk
  ARM: Orion: XOR: Add support for clk
  ARM: Orion: CESA: Add support for clk
  ...

Pull arm-soc cleanups (part 2) from Olof Johansson:
 "More cleanups, continuing an earlier set with omap and samsung
  specific cleanups.  These could not go into the first set because they
  have dependencies on various other series that in turn depend on the
  first cleanups."

Fixed up conflicts in arch/arm/plat-omap/counter_32k.c due to commit
bd0493ea: "move read_{boot,persistent}_clock to the architecture
level" that changed how the persistent clocks were handled.  And trivial
conflicts in arch/arm/mach-omap1/common.h due to just independent
changes close to each other.

* tag 'cleanup2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (35 commits)
  ARM: SAMSUNG: merge plat-s5p into plat-samsung
  ARM: SAMSUNG: move options for common s5p into plat-samsung/Kconfig
  ARM: SAMSUNG: move setup code for s5p mfc and mipiphy into plat-samsung
  ARM: SAMSUNG: move platform device for s5p uart into plat-samsung
  ARM: SAMSUNG: move hr timer for common s5p into plat-samsung
  ARM: SAMSUNG: move pm part for common s5p into plat-samsung
  ARM: SAMSUNG: move interrupt part for common s5p into plat-samsung
  ARM: SAMSUNG: move clock part for common s5p into plat-samsung
  ARM: S3C24XX: Use common macro to define resources on dev-uart.c
  ARM: S3C24XX: move common clock init into common.c
  ARM: S3C24XX: move common power-management code to mach-s3c24xx
  ARM: S3C24XX: move plat-s3c24xx/dev-uart.c into common.c
  ARM: S3C24XX: move plat-s3c24xx/cpu.c
  ARM: OMAP2+: Kconfig: convert SOC_OMAPAM33XX to SOC_AM33XX
  ARM: OMAP2+: Kconfig: convert SOC_OMAPTI81XX to SOC_TI81XX
  GPMC: add ECC control definitions
  ARM: OMAP2+: dmtimer: remove redundant sysconfig context restore
  ARM: OMAP: AM35xx: convert 3517 detection/flags to AM35xx
  ARM: OMAP: AM35xx: remove redunant cpu_is checks for AM3505
  ARM: OMAP1: Pass dma request lines in platform data to MMC driver
  ...

Pull arm-soc driver specific updates from Olof Johansson:
 "These changes are specific to some driver that may be used by multiple
  boards or socs.  The most significant change in here is the move of
  the samsung iommu code from a platform specific in-kernel interface to
  the generic iommu subsystem."

Fix up trivial conflicts in arch/arm/mach-exynos/Kconfig

* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits)
  mmc: dt: Consolidate DT bindings
  iommu/exynos: Add iommu driver for EXYNOS Platforms
  ARM: davinci: optimize the DMA ISR
  ARM: davinci: implement DEBUG_LL port choice
  ARM: tegra: Add SMMU enabler in AHB
  ARM: tegra: Add Tegra AHB driver
  Input: pxa27x_keypad add choice to set direct_key_mask
  Input: pxa27x_keypad direct key may be low active
  Input: pxa27x_keypad bug fix for direct_key_mask
  Input: pxa27x_keypad keep clock on as wakeup source
  ARM: dt: tegra: pinmux changes for USB ULPI
  ARM: tegra: add USB ULPI PHY reset GPIO to device tree
  ARM: tegra: don't hard-code USB ULPI PHY reset_gpio
  ARM: tegra: change pll_p_out4's rate to 24MHz
  ARM: tegra: fix pclk rate
  ARM: tegra: reparent sclk to pll_c_out1
  ARM: tegra: Add pllc clock init table
  ARM: dt: tegra cardhu: basic audio support
  ARM: dt: tegra30.dtsi: Add audio-related nodes
  ARM: tegra: add AUXDATA required for audio
  ...

Pull arm-soc defconfig updates from Olof Johansson:
 "For the first time, we have one branch that collects just updates to
  defconfig files, mostly for adapting to changes in other subsystems."

* tag 'defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: PRIMA2: add prima2_defconfig for CSR SiRFprimaII
  ARM: tegra: update defconfig
  ARM: tegra: update defconfig
  ARM: imx_v6_v7_defconfig: Add SPI NOR support
  ARM: imx_v4_v5_defconfig: Let CONFIG_MACH_IMX27_DT be built by default

Pull x86/mce merge window patches from Tony Luck:
 "Including two that make error_context() checks less sucky"

* tag 'x86-mce-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
  x86/mce: Add instruction recovery signatures to mce-severity table
  x86/mce: Fix check for processor context when machine check was taken.
  MCE: Fix vm86 handling for 32bit mce handler
  x86/mce Add validation check before GHES error is recorded
  x86/mce: Avoid reading every machine check bank register twice.

Pull tile updates from Chris Metcalf:
 "These changes cover a range of new arch/tile features and
  optimizations.  They've been through LKML review and on linux-next for
  a month or so.  There's also one bug-fix that just missed 3.4, which
  I've marked for stable."

Fixed up trivial conflict in arch/tile/Kconfig (new added tile Kconfig
entries clashing with the generic timer/clockevents changes).

* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  tile: default to tilegx_defconfig for ARCH=tile
  tile: fix bug where fls(0) was not returning 0
  arch/tile: mark TILEGX as not EXPERIMENTAL
  tile/mm/fault.c: Port OOM changes to handle_page_fault
  arch/tile: add descriptive text if the kernel reports a bad trap
  arch/tile: allow querying cpu module information from the hypervisor
  arch/tile: fix hardwall for tilegx and generalize for idn and ipi
  arch/tile: support multiple huge page sizes dynamically
  mm: add new arch_make_huge_pte() method for tile support
  arch/tile: support kexec() for tilegx
  arch/tile: support <asm/cachectl.h> header for cacheflush() syscall
  arch/tile: Allow tilegx to build with either 16K or 64K page size
  arch/tile: optimize get_user/put_user and friends
  arch/tile: support building big-endian kernel
  arch/tile: allow building Linux with transparent huge pages enabled
  arch/tile: use interrupt critical sections less

Now we have four copies of this code, Linus "suggested" it was about time
we stopped copying it and turned it into a helper.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Add device info into list before doing context mapping, because device
info will be used by iommu_enable_dev_iotlb(). Without it, ATS won't get
enabled as it should be.

ATS, while a dubious decision from a security point of view, can be very
important for performance.
Signed-off-by: Xudong Hao <xudong.hao@intel.com>
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

There is no "ARCH=tile" (just like there is no "ARCH=x86") so we need
to pick a default configuration, either tilepro or tilegx, when users
specify ARCH=tile.  We'll use tilegx, since that's our current chip.
Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

This is because __builtin_clz(0) returns 64 for the "undefined" case
of 0, since the builtin just does a right-shift 32 and "clz" instruction.
So, use the alpha approach of casting to u32 and using __builtin_clzll().

Cc: stable@vger.kernel.org
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

Also create a TILEPRO config setting to use for #ifdefs where it
is cleaner to do so, and make the 64BIT setting depend directly
on the setting of TILEGX.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

Commit d065bd81
(mm: retry page fault when blocking on disk transfer) and
commit 37b23e05
(x86,mm: make pagefault killable)

The above commits introduced changes into the x86 pagefault handler
for making the page fault handler retryable as well as killable.

These changes reduce the mmap_sem hold time, which is crucial
during OOM killer invocation.

Port these changes to tile.
Signed-off-by: Kautuk Consul <consul.kautuk@gmail.com>
[cmetcalf@tilera.com: initialize "flags" after "write" updated.]
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

If the kernel unexpectedly takes a bad trap, it's convenient to
have it report the type of trap as part of the error.  This gives
customers a bit more context before they call up customer support.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

This just adds a few more attributes to the information Linux
can query from the hypervisor for the /sys/hypervisor/board/ directory,
providing part, serial#, revision#, and description for cpu modules
(as opposed to the board itself, or any mezzanine boards).
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

The hardwall drain code was not properly implemented for tilegx,
just tilepro, so you couldn't reliably restart an application that
made use of the udn.

In addition, the code was only applicable to the udn (user dynamic
network).  On tilegx there is a second user network that is available
(the "idn"), and there is support for having I/O shims deliver
user-level interrupts to applications ("ipi") which functions in a
very similar way to the inter-core permissions used for udn/idn.
So this change also generalizes the code from supporting just the udn
to supports udn/idn/ipi on tilegx.

By default we now use /dev/hardwall/{udn,idn,ipi} with separate
minor numbers for the three devices.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

This change adds support for a new "super" bit in the PTE, using the new
arch_make_huge_pte() method.  The Tilera hypervisor sees the bit set at a
given level of the page table and gangs together 4, 16, or 64 consecutive
pages from that level of the hierarchy to create a larger TLB entry.

One extra "super" page size can be specified at each of the three levels
of the page table hierarchy on tilegx, using the "hugepagesz" argument
on the boot command line.  A new hypervisor API is added to allow Linux
to tell the hypervisor how many PTEs to gang together at each level of
the page table.

To allow pre-allocating huge pages larger than the buddy allocator can
handle, this change modifies the Tilera bootmem support to put all of
memory on tilegx platforms into bootmem.

As part of this change I eliminate the vestigial CONFIG_HIGHPTE support,
which never worked anyway, and eliminate the hv_page_size() API in favor
of the standard vma_kernel_pagesize() API.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

The tile support for multiple-size huge pages requires tagging
the hugetlb PTE with a "super" bit for PTEs that are multiples of
the basic size of a pagetable span.  To set that bit properly
we need to tweak the PTe in make_huge_pte() based on the vma.

This change provides the API for a subsequent tile-specific
change to use.
Reviewed-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

We already had a syscall that did some dcache flushing, but it was
not used in practice.  Make it MIPS compatible instead so it can
do both the DCACHE and ICACHE actions.  We have code that wants to
be able to use the ICACHE flush mode from userspace so this change
enables that.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

This change introduces new flags for the hv_install_context()
API that passes a page table pointer to the hypervisor.  Clients
can explicitly request 4K, 16K, or 64K small pages when they
install a new context.  In practice, the page size is fixed at
kernel compile time and the same size is always requested every
time a new page table is installed.

The <hv/hypervisor.h> header changes so that it provides more abstract
macros for managing "page" things like PFNs and page tables.  For
example there is now a HV_DEFAULT_PAGE_SIZE_SMALL instead of the old
HV_PAGE_SIZE_SMALL.  The various PFN routines have been eliminated and
only PA- or PTFN-based ones remain (since PTFNs are always expressed
in fixed 2KB "page" size).  The page-table management macros are
renamed with a leading underscore and take page-size arguments with
the presumption that clients will use those macros in some single
place to provide the "real" macros they will use themselves.

I happened to notice the old hv_set_caching() API was totally broken
(it assumed 4KB pages) so I changed it so it would nominally work
correctly with other page sizes.

Tag modules with the page size so you can't load a module built with
a conflicting page size.  (And add a test for SMP while we're at it.)
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

Use direct load/store for the get_user/put_user.

Previously, we would call out to a helper routine that would do the
appropriate thing and then return, handling the possible exception
internally.  Now we inline the load or store, along with a "we succeeded"
indication in a register; if the load or store faults, we write a
"we failed" indication into the same register and then return to the
following instruction.  This is more efficient and gives us more compact
code, as well as being more in line with what other architectures do.

The special futex assembly source file for TILE-Gx also disappears in
this change; we just use the same inlining idiom there as well, putting
the appropriate atomic operations directly into futex_atomic_op_inuser()
(and thus into the FUTEX_WAIT function).

The underlying atomic copy_from_user, copy_to_user functions were
renamed using the (cryptic) x86 convention as copy_from_user_ll and
copy_to_user_ll.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

The toolchain supports big-endian mode now, so add support for building
the kernel to run big-endian as well.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

The change adds some infrastructure for managing tile pmd's more generally,
using pte_pmd() and pmd_pte() methods to translate pmd values to and
from ptes, since on TILEPro a pmd is really just a nested structure
holding a pgd (aka pte).  Several existing pmd methods are moved into
this framework, and a whole raft of additional pmd accessors are defined
that are used by the transparent hugepage framework.

The tile PTE now has a "client2" bit.  The bit is used to indicate a
transparent huge page is in the process of being split into subpages.

This change also fixes a generic bug where the return value of the
generic pmdp_splitting_flush() was incorrect.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

In general we want to avoid ever touching memory while within an
interrupt critical section, since the page fault path goes through
a different path from the hypervisor when in an interrupt critical
section, and we carefully decided with tilegx that we didn't need
to support this path in the kernel.  (On tilepro we did implement
that path as part of supporting atomic instructions in software.)

In practice we always need to touch the kernel stack, since that's
where we store the interrupt state before releasing the critical
section, but this change cleans up a few things.  The IRQ_ENABLE
macro is split up so that when we want to enable interrupts in a
deferred way (e.g. for cpu_idle or for interrupt return) we can
read the per-cpu enable mask before entering the critical section.
The cache-migration code is changed to use interrupt masking instead
of interrupt critical sections.  And, the interrupt-entry code is
changed so that we defer loading "tp" from per-cpu data until after
we have released the interrupt critical section.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

Pull dma-buf updates from Sumit Semwal:
 "Here's the first signed-tag pull request for dma-buf framework.  It
  includes the following key items:
   - mmap support
   - vmap support
   - related documentation updates

  These are needed by various drivers to allow mmap/vmap of dma-buf
  shared buffers.  Dave Airlie has some prime patches dependent on the
  vmap pull as well."

* tag 'tag-for-linus-3.5' of git://git.linaro.org/people/sumitsemwal/linux-dma-buf:
  dma-buf: add initial vmap documentation
  dma-buf: minor documentation fixes.
  dma-buf: add vmap interface
  dma-buf: mmap support

Pull slave-dmaengine updates from Vinod Koul:
 "Nothing exciting this time, odd fixes in a bunch of drivers"

* 'next' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: at_hdmac: take maxburst from slave configuration
  dmaengine: at_hdmac: remove ATC_DEFAULT_CTRLA constant
  dmaengine: at_hdmac: remove some at_dma_slave comments
  dma: imx-sdma: make channel0 operations atomic
  dmaengine: Fixup dmaengine_prep_slave_single() to be actually useful
  dmaengine: Use dma_sg_len(sg) instead of sg->length
  dmaengine: Use sg_dma_address instead of sg_phys
  DMA: PL330: Remove duplicate header file inclusion
  dma: imx-sdma: keep the callbacks invoked in the tasklet
  dmaengine: dw_dma: add Device Tree probing capability
  dmaengine: dw_dmac: Add clk_{un}prepare() support
  dma/amba-pl08x: add support for the Nomadik variant
  dma/amba-pl08x: check for terminal count status only

Pull CMA and ARM DMA-mapping updates from Marek Szyprowski:
 "These patches contain two major updates for DMA mapping subsystem
  (mainly for ARM architecture).  First one is Contiguous Memory
  Allocator (CMA) which makes it possible for device drivers to allocate
  big contiguous chunks of memory after the system has booted.

  The main difference from the similar frameworks is the fact that CMA
  allows to transparently reuse the memory region reserved for the big
  chunk allocation as a system memory, so no memory is wasted when no
  big chunk is allocated.  Once the alloc request is issued, the
  framework migrates system pages to create space for the required big
  chunk of physically contiguous memory.

  For more information one can refer to nice LWN articles:

   - 'A reworked contiguous memory allocator':
		http://lwn.net/Articles/447405/

   - 'CMA and ARM':
		http://lwn.net/Articles/450286/

   - 'A deep dive into CMA':
		http://lwn.net/Articles/486301/

   - and the following thread with the patches and links to all previous
     versions:
		https://lkml.org/lkml/2012/4/3/204

  The main client for this new framework is ARM DMA-mapping subsystem.

  The second part provides a complete redesign in ARM DMA-mapping
  subsystem.  The core implementation has been changed to use common
  struct dma_map_ops based infrastructure with the recent updates for
  new dma attributes merged in v3.4-rc2.  This allows to use more than
  one implementation of dma-mapping calls and change/select them on the
  struct device basis.  The first client of this new infractructure is
  dmabounce implementation which has been completely cut out of the
  core, common code.

  The last patch of this redesign update introduces a new, experimental
  implementation of dma-mapping calls on top of generic IOMMU framework.
  This lets ARM sub-platform to transparently use IOMMU for DMA-mapping
  calls if one provides required IOMMU hardware.

  For more information please refer to the following thread:
		http://www.spinics.net/lists/arm-kernel/msg175729.html

  The last patch merges changes from both updates and provides a
  resolution for the conflicts which cannot be avoided when patches have
  been applied on the same files (mainly arch/arm/mm/dma-mapping.c)."

Acked by Andrew Morton <akpm@linux-foundation.org>:
 "Yup, this one please.  It's had much work, plenty of review and I
  think even Russell is happy with it."

* 'for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping: (28 commits)
  ARM: dma-mapping: use PMD size for section unmap
  cma: fix migration mode
  ARM: integrate CMA with DMA-mapping subsystem
  X86: integrate CMA with DMA-mapping subsystem
  drivers: add Contiguous Memory Allocator
  mm: trigger page reclaim in alloc_contig_range() to stabilise watermarks
  mm: extract reclaim code from __alloc_pages_direct_reclaim()
  mm: Serialize access to min_free_kbytes
  mm: page_isolation: MIGRATE_CMA isolation functions added
  mm: mmzone: MIGRATE_CMA migration type added
  mm: page_alloc: change fallbacks array handling
  mm: page_alloc: introduce alloc_contig_range()
  mm: compaction: export some of the functions
  mm: compaction: introduce isolate_freepages_range()
  mm: compaction: introduce map_pages()
  mm: compaction: introduce isolate_migratepages_range()
  mm: page_alloc: remove trailing whitespace
  ARM: dma-mapping: add support for IOMMU mapper
  ARM: dma-mapping: use alloc, mmap, free from dma_ops
  ARM: dma-mapping: remove redundant code and do the cleanup
  ...

Conflicts:
	arch/x86/include/asm/dma-mapping.h

Pull sound update from Takashi Iwai:
 "This is the second updates for 3.5-rc1.  It's mainly for OMAP4 HDMI
  updates and the device tree updates for OMAP, in addition to a couple
  of PCM accuray improvement and Realtek ALC269VD codec support."

* tag 'sound-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (21 commits)
  ALSA: hda/realtek - Add new codec support for ALC269VD
  ALSA: core: group read of pointer, tstamp and jiffies
  ASoC: OMAP: HDMI: Rename sound card source file
  ASoC: OMAP: HDMI: Make sound card naming more generic
  ASoC: OMAP: HDMI: Make build config options more generic
  ASoC: OMAP: HDMI: Expand capabilities of the HDMI DAI
  ASoC: OMAP: HDMI: Improve how the display state is verified
  ASoC: OMAP: HDMI: Expand configuration of hw_params
  ASoC: OMAP: HDMI: Use the DSS audio interface
  ASoC: OMAP: HDMI: Create a structure for private data of the CPU DAI
  ASoC: OMAP: HDMI: Change error values in HDMI CPU DAI
  ASoC: OMAP: HDMI: Update the platform device names
  ASoC: omap-abe-twl6040: Introduce driver data for runtime parameters
  ASoC: omap-abe-twl6040: Move Digital Mic widget into dapm table
  ASoC: omap-abe-twl6040: Keep only one snd_soc_dai_link structure
  ASoC: omap-dmic: Add device tree bindings
  ASoC: omap-mcpdm: Add device tree bindings
  ASoC: omap-mcbsp: buffer size constraint only applies to playback stream
  ASoC: omap-mcbsp: Use the common interrupt line if supported by the SoC
  ASoC: omap-mcbsp: Remove unused FRAME dma_op_mode
  ...

Pull VGA-switcheroo audio client support for HD-audio from Takashi Iwai.

This depended on the recent drm pull.

* tag 'hda-switcheroo' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - unlock on error in azx_interrupt()
  ALSA: hda - Support VGA-switcheroo
  ALSA: hda - Export snd_hda_lock_devices()
  ALSA: hda - Check the dead HDMI audio controller by vga-switcheroo

Pull CRIS changes from Jesper Nilsson:
 "No major changes here, but fixes some compile errors for CRIS, some
  small style issues, some documentation and as a bonus nukes a couple
  of obsolete rtc-files and related code."

* tag 'cris-for-linus' of git://jni.nu/cris:
  cris: Remove old legacy "-traditional" flag from arch-v10/lib/Makefile
  CRIS: Remove legacy RTC drivers
  cris/mm/fault.c: Port OOM changes to do_page_fault
  cris:fix the wrong function declear
  CRIS: Add _sdata to vmlinux.lds.S
  cris: posix_types.h, include asm-generic/posix_types.h
  CRIS: Update documentation
  cris/arch-v32: cryptocop: Use kzalloc
  net:removed the unused variable
  cris:removed the unused variable
  CRISv32: Correct name of read_mostly section.

Pull MMC changes from Chris Ball
 - at91-mci: This driver will be replaced by atmel-mci in 3.7.
 - atmel-mci: Add support for old at91-mci hardware.
 - dw_mmc: Allow multiple controllers; this previously caused
   corruption.
 - imxmmc: Remove this driver, replaced by mxcmmc.
 - mmci: Add device tree support.
 - omap: Allow multiple controllers.
 - omap_hsmmc: Auto CMD12, DDR support.
 - tegra: Support SD 3.0 spec.

Fix up the usual trivial conflicts in feature-removal-schedule.txt

* tag 'mmc-merge-for-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (38 commits)
  mmc: at91-mci: this driver is now deprecated
  mmc: omap_hsmmc: pass IRQF_ONESHOT to request_threaded_irq
  mmc: block: Allow disabling 512B sector size emulation
  mmc: atmel-mci: add debug logs
  mmc: atmel-mci: add support for version lower than v2xx
  mmc: atmel-mci: change the state machine for compatibility with old IP
  mmc: atmel-mci: the r/w proof capability lack was not well managed
  mmc: dw_mmc: Fixed sdio interrupt mask bit setting bug
  mmc: omap: convert to module_platform_driver
  mmc: omap: make it behave well as a module
  mmc: omap: convert to per instance workqueue
  mmc: core: Remove dead code
  mmc: card: Avoid null pointer dereference
  mmc: core: Prevent eMMC VCC supply to be cut from late init
  mmc: dw_mmc: make multiple instances of dw_mci_card_workqueue
  mmc: queue: remove redundant memsets
  mmc: queue: rename mmc_request function
  mmc: core: skip card initialization if power class selection fails
  mmc: core: fix the signaling 1.8V for HS200
  mmc: core: fix the decision of HS200/DDR card-type
  ...

As per commits 2922585b ("lib: Sparc's strncpy_from_user is generic
enough, move under lib/") and 92ae03f2 ("x86: merge 32/64-bit
versions of 'strncpy_from_user()' and speed it up"), and corresponding
discussion on linux-arch.
Signed-off-by: Jonas Bonn <jonas@southpole.se>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull ext2, ext3 and quota fixes from Jan Kara:
 "Interesting bits are:
   - removal of a special i_mutex locking subclass (I_MUTEX_QUOTA) since
     quota code does not need i_mutex anymore in any unusual way.
   - backport (from ext4) of a fix of a checkpointing bug (missing cache
     flush) that could lead to fs corruption on power failure

  The rest are just random small fixes & cleanups."

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  ext2: trivial fix to comment for ext2_free_blocks
  ext2: remove the redundant comment for ext2_export_ops
  ext3: return 32/64-bit dir name hash according to usage type
  quota: Get rid of nested I_MUTEX_QUOTA locking subclass
  quota: Use precomputed value of sb_dqopt in dquot_quota_sync
  ext2: Remove i_mutex use from ext2_quota_write()
  reiserfs: Remove i_mutex use from reiserfs_quota_write()
  ext4: Remove i_mutex use from ext4_quota_write()
  ext3: Remove i_mutex use from ext3_quota_write()
  quota: Fix double lock in add_dquot_ref() with CONFIG_QUOTA_DEBUG
  jbd: Write journal superblock with WRITE_FUA after checkpointing
  jbd: protect all log tail updates with j_checkpoint_mutex
  jbd: Split updating of journal superblock and marking journal empty
  ext2: do not register write_super within VFS
  ext2: Remove s_dirt handling
  ext2: write superblock only once on unmount
  ext3: update documentation with barrier=1 default
  ext3: remove max_debt in find_group_orlov()
  jbd: Refine commit writeout logic

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>

Some minor inline documentation fixes for gaps resulting from new patches.
Signed-off-by: Sumit Semwal <sumit.semwal@ti.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>

The main requirement I have for this interface is for scanning out
using the USB gpu devices. Since these devices have to read the
framebuffer on updates and linearly compress it, using kmaps
is a major overhead for every update.

v2: fix warn issues pointed out by Sylwester Nawrocki.

v3: fix compile !CONFIG_DMA_SHARED_BUFFER and add _GPL for now
Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Rob Clark <rob.clark@linaro.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>

Compared to Rob Clark's RFC I've ditched the prepare/finish hooks
and corresponding ioctls on the dma_buf file. The major reason for
that is that many people seem to be under the impression that this is
also for synchronization with outstanding asynchronous processsing.
I'm pretty massively opposed to this because:

- It boils down reinventing a new rather general-purpose userspace
  synchronization interface. If we look at things like futexes, this
  is hard to get right.
- Furthermore a lot of kernel code has to interact with this
  synchronization primitive. This smells a look like the dri1 hw_lock,
  a horror show I prefer not to reinvent.
- Even more fun is that multiple different subsystems would interact
  here, so we have plenty of opportunities to create funny deadlock
  scenarios.

I think synchronization is a wholesale different problem from data
sharing and should be tackled as an orthogonal problem.

Now we could demand that prepare/finish may only ensure cache
coherency (as Rob intended), but that runs up into the next problem:
We not only need mmap support to facilitate sw-only processing nodes
in a pipeline (without jumping through hoops by importing the dma_buf
into some sw-access only importer), which allows for a nicer
ION->dma-buf upgrade path for existing Android userspace. We also need
mmap support for existing importing subsystems to support existing
userspace libraries. And a loot of these subsystems are expected to
export coherent userspace mappings.

So prepare/finish can only ever be optional and the exporter /needs/
to support coherent mappings. Given that mmap access is always
somewhat fallback-y in nature I've decided to drop this optimization,
instead of just making it optional. If we demonstrate a clear need for
this, supported by benchmark results, we can always add it in again
later as an optional extension.

Other differences compared to Rob's RFC is the above mentioned support
for mapping a dma-buf through facilities provided by the importer.
Which results in mmap support no longer being optional.

Note that this dma-buf mmap patch does _not_ support every possible
insanity an existing subsystem could pull of with mmap: Because it
does not allow to intercept pagefaults and shoot down ptes importing
subsystems can't add some magic of their own at these points (e.g. to
automatically synchronize with outstanding rendering or set up some
special resources). I've done a cursory read through a few mmap
implementions of various subsytems and I'm hopeful that we can avoid
this (and the complexity it'd bring with it).

Additonally I've extended the documentation a bit to explain the hows
and whys of this mmap extension.

In case we ever want to add support for explicitly cache maneged
userspace mmap with a prepare/finish ioctl pair, we could specify that
userspace needs to mmap a different part of the dma_buf, e.g. the
range starting at dma_buf->size up to dma_buf->size*2. This works
because the size of a dma_buf is invariant over it's lifetime. The
exporter would obviously need to fall back to coherent mappings for
both ranges if a legacy clients maps the coherent range and the
architecture cannot suppor conflicting caching policies. Also, this
would obviously be optional and userspace needs to be able to fall
back to coherent mappings.

v2:
- Spelling fixes from Rob Clark.
- Compile fix for !DMA_BUF from Rob Clark.
- Extend commit message to explain how explicitly cache managed mmap
  support could be added later.
- Extend the documentation with implementations notes for exporters
  that need to manually fake coherency.

v3:
- dma_buf pointer initialization goof-up noticed by Rebecca Schultz
  Zavin.

Cc: Rob Clark <rob.clark@linaro.org>
Cc: Rebecca Schultz Zavin <rebecca@android.com>
Acked-by: Rob Clark <rob.clark@linaro.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>