biovecs has become immutable since v3.13, so it isn't necessary
to allocate biovecs for the new cloned bios, then we can save
one extra biovecs allocation/copy, and the allocation is often
not fixed-length and a bit more expensive.

For example, if the 'max_sectors_kb' of null blk's queue is set
as 16(32 sectors) via sysfs just for making more splits, this patch
can increase throught about ~70% in the sequential read test over
null_blk(direct io, bs: 1M).

Cc: Christoph Hellwig <hch@infradead.org>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Cc: Ming Lin <ming.l@ssi.samsung.com>
Cc: Dongsu Park <dpark@posteo.net>
Signed-off-by: Ming Lei <ming.lei@canonical.com>

This fixes a performance regression introduced by commit 54efd50b,
and allows us to take full advantage of the fact that we have immutable
bio_vecs. Hand applied, as it rejected violently with commit
5014c311.
Signed-off-by: Jens Axboe <axboe@fb.com>

While making the root blkg unconditional, ec13b1d6 ("blkcg: always
create the blkcg_gq for the root blkcg") removed the part which clears
q->root_blkg and ->root_rl.blkg during q exit.  This leaves the two
pointers dangling after blkg_destroy_all().  blk-throttle exit path
performs blkg traversals and dereferences ->root_blkg and can lead to
the following oops.

 BUG: unable to handle kernel NULL pointer dereference at 0000000000000558
 IP: [<ffffffff81389746>] __blkg_lookup+0x26/0x70
 ...
 task: ffff88001b4e2580 ti: ffff88001ac0c000 task.ti: ffff88001ac0c000
 RIP: 0010:[<ffffffff81389746>]  [<ffffffff81389746>] __blkg_lookup+0x26/0x70
 ...
 Call Trace:
  [<ffffffff8138d14a>] blk_throtl_drain+0x5a/0x110
  [<ffffffff8138a108>] blkcg_drain_queue+0x18/0x20
  [<ffffffff81369a70>] __blk_drain_queue+0xc0/0x170
  [<ffffffff8136a101>] blk_queue_bypass_start+0x61/0x80
  [<ffffffff81388c59>] blkcg_deactivate_policy+0x39/0x100
  [<ffffffff8138d328>] blk_throtl_exit+0x38/0x50
  [<ffffffff8138a14e>] blkcg_exit_queue+0x3e/0x50
  [<ffffffff8137016e>] blk_release_queue+0x1e/0xc0
 ...

While the bug is a straigh-forward use-after-free bug, it is tricky to
reproduce because blkg release is RCU protected and the rest of exit
path usually finishes before RCU grace period.

This patch fixes the bug by updating blkg_destro_all() to clear
q->root_blkg and ->root_rl.blkg.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: "Richard W.M. Jones" <rjones@redhat.com>
Reported-by: Josh Boyer <jwboyer@fedoraproject.org>
Link: http://lkml.kernel.org/g/CA+5PVA5rzQ0s4723n5rHBcxQa9t0cW8BPPBekr_9aMRoWt2aYg@mail.gmail.com
Fixes: ec13b1d6 ("blkcg: always create the blkcg_gq for the root blkcg")
Cc: stable@vger.kernel.org # v4.2+
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

For drivers that don't support gaps in the SG lists handed to
them we must bounce (copy the user buffers) and pass a bio that
does not include gaps. This doesn't matter for any current user,
but will help to allow iser which can't handle gaps to use the
block virtual boundary instead of using driver-local bounce
buffering when handling SG_IO commands.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

This is only theoretical at the moment given that the only
subsystems that generate integrity payloads are the block layer
itself and the scsi target (which generate well aligned integrity
payloads). But when we will expose integrity meta-data to user-space,
we'll need to refuse appending a page with a gap (if the queue
virtual boundary is set).
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

If a driver sets the block queue virtual boundary mask, it means that
it cannot handle gaps so we must not allow those in the integrity
payload as well.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>

Fixed up by me to have duplicate integrity merge functions, depending
on whether block integrity is enabled or not. Fixes a compilations
issue with CONFIG_BLK_DEV_INTEGRITY unset.
Signed-off-by: Jens Axboe <axboe@fb.com>

We are checking for gaps to previous bio_vec, which can
only detect back merges gaps. Moreover, at the point where
we check for a gap, we don't know if we will attempt a back
or a front merge. Thus, check for gap to prev in a back merge
attempt and check for a gap to next in a front merge attempt.
Signed-off-by: Jens Axboe <axboe@fb.com>
[sagig: Minor rename change]
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>

set_capacity() sets device's capacity using 512 bytes sectors.
null_blk calculates the number of sectors by size / bs, which
set_capacity is called with. This led to null_blk exposing the
wrong number of sectors when bs is not 512 bytes.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

Driver was not freeing the memory allocated for internal nullb queues.
This patch frees the memory during driver unload.
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@fb.com>

The compiler can't figure out that bvprv is initialized whenever 'prev'
is set to 1 as well. Use a pointer to bvprv instead, setting it to NULL
initially, and get rid of the 'prev' tracking. This dumbs it down
enough that gcc is happy.
Signed-off-by: Jens Axboe <axboe@fb.com>

Pull SG updates from Jens Axboe:
 "This contains a set of scatter-gather related changes/fixes for 4.3:

   - Add support for limited chaining of sg tables even for
     architectures that do not set ARCH_HAS_SG_CHAIN.  From Christoph.

   - Add sg chain support to target_rd.  From Christoph.

   - Fixup open coded sg->page_link in crypto/omap-sham.  From
     Christoph.

   - Fixup open coded crypto ->page_link manipulation.  From Dan.

   - Also from Dan, automated fixup of manual sg_unmark_end()
     manipulations.

   - Also from Dan, automated fixup of open coded sg_phys()
     implementations.

   - From Robert Jarzmik, addition of an sg table splitting helper that
     drivers can use"

* 'for-4.3/sg' of git://git.kernel.dk/linux-block:
  lib: scatterlist: add sg splitting function
  scatterlist: use sg_phys()
  crypto/omap-sham: remove an open coded access to ->page_link
  scatterlist: remove open coded sg_unmark_end instances
  crypto: replace scatterwalk_sg_chain with sg_chain
  target/rd: always chain S/G list
  scatterlist: allow limited chaining without ARCH_HAS_SG_CHAIN

Pull block driver updates from Jens Axboe:
 "On top of the 4.3 core block IO changes, here are the driver related
  changes for 4.3.  Basically just NVMe and nbd this time around:

   - NVMe:
      - PRACT PI improvement from Alok Pandey.
      - Cleanups and improvements on submission queue doorbell and
        writing, using CMB if available.  From Jon Derrick.
      - From Keith, support for setting queue maximum segments, and
        reset support.
      - Also from Jon, fixup of u64 division issue on 32-bit archs and
        wiring up of the reset support through and ioctl.
      - Two small cleanups from Matias and Sunad

  - Various code cleanups and fixes from Markus Pargmann"

* 'for-4.3/drivers' of git://git.kernel.dk/linux-block:
  NVMe: Using PRACT bit to generate and verify PI by controller
  NVMe:Remove unreachable code in nvme_abort_req
  NVMe: Add nvme subsystem reset IOCTL
  NVMe: Add nvme subsystem reset support
  NVMe: removed unused nn var from nvme_dev_add
  NVMe: Set queue max segments
  nbd: flags is a u32 variable
  nbd: Rename functions for clearness of recv/send path
  nbd: Change 'disconnect' to be boolean
  nbd: Add debugfs entries
  nbd: Remove variable 'pid'
  nbd: Move clear queue debug message
  nbd: Remove 'harderror' and propagate error properly
  nbd: restructure sock_shutdown
  nbd: sock_shutdown, remove conditional lock
  nbd: Fix timeout detection
  nvme: Fixes u64 division which breaks i386 builds
  NVMe: Use CMB for the IO SQes if available
  NVMe: Unify SQ entry writing and doorbell ringing

Pull core block updates from Jens Axboe:
 "This first core part of the block IO changes contains:

   - Cleanup of the bio IO error signaling from Christoph.  We used to
     rely on the uptodate bit and passing around of an error, now we
     store the error in the bio itself.

   - Improvement of the above from myself, by shrinking the bio size
     down again to fit in two cachelines on x86-64.

   - Revert of the max_hw_sectors cap removal from a revision again,
     from Jeff Moyer.  This caused performance regressions in various
     tests.  Reinstate the limit, bump it to a more reasonable size
     instead.

   - Make /sys/block/<dev>/queue/discard_max_bytes writeable, by me.
     Most devices have huge trim limits, which can cause nasty latencies
     when deleting files.  Enable the admin to configure the size down.
     We will look into having a more sane default instead of UINT_MAX
     sectors.

   - Improvement of the SGP gaps logic from Keith Busch.

   - Enable the block core to handle arbitrarily sized bios, which
     enables a nice simplification of bio_add_page() (which is an IO hot
     path).  From Kent.

   - Improvements to the partition io stats accounting, making it
     faster.  From Ming Lei.

   - Also from Ming Lei, a basic fixup for overflow of the sysfs pending
     file in blk-mq, as well as a fix for a blk-mq timeout race
     condition.

   - Ming Lin has been carrying Kents above mentioned patches forward
     for a while, and testing them.  Ming also did a few fixes around
     that.

   - Sasha Levin found and fixed a use-after-free problem introduced by
     the bio->bi_error changes from Christoph.

   - Small blk cgroup cleanup from Viresh Kumar"

* 'for-4.3/core' of git://git.kernel.dk/linux-block: (26 commits)
  blk: Fix bio_io_vec index when checking bvec gaps
  block: Replace SG_GAPS with new queue limits mask
  block: bump BLK_DEF_MAX_SECTORS to 2560
  Revert "block: remove artifical max_hw_sectors cap"
  blk-mq: fix race between timeout and freeing request
  blk-mq: fix buffer overflow when reading sysfs file of 'pending'
  Documentation: update notes in biovecs about arbitrarily sized bios
  block: remove bio_get_nr_vecs()
  fs: use helper bio_add_page() instead of open coding on bi_io_vec
  block: kill merge_bvec_fn() completely
  md/raid5: get rid of bio_fits_rdev()
  md/raid5: split bio for chunk_aligned_read
  block: remove split code in blkdev_issue_{discard,write_same}
  btrfs: remove bio splitting and merge_bvec_fn() calls
  bcache: remove driver private bio splitting code
  block: simplify bio_add_page()
  block: make generic_make_request handle arbitrarily sized bios
  blk-cgroup: Drop unlikely before IS_ERR(_OR_NULL)
  block: don't access bio->bi_error after bio_put()
  block: shrink struct bio down to 2 cache lines again
  ...

Pull first round of SCSI updates from James Bottomley:
 "This includes one new driver: cxlflash plus the usual grab bag of
  updates for the major drivers: qla2xxx, ipr, storvsc, pm80xx, hptiop,
  plus a few assorted fixes.

  There's another tranch coming, but I want to incubate it another few
  days in the checkers, plus it includes a mpt2sas separated lifetime
  fix, which Avago won't get done testing until Friday"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (85 commits)
  aic94xx: set an error code on failure
  storvsc: Set the error code correctly in failure conditions
  storvsc: Allow write_same when host is windows 10
  storvsc: use storage protocol version to determine storage capabilities
  storvsc: use correct defaults for values determined by protocol negotiation
  storvsc: Untangle the storage protocol negotiation from the vmbus protocol negotiation.
  storvsc: Use a single value to track protocol versions
  storvsc: Rather than look for sets of specific protocol versions, make decisions based on ranges.
  cxlflash: Remove unused variable from queuecommand
  cxlflash: shift wrapping bug in afu_link_reset()
  cxlflash: off by one bug in cxlflash_show_port_status()
  cxlflash: Virtual LUN support
  cxlflash: Superpipe support
  cxlflash: Base error recovery support
  qla2xxx: Update driver version to 8.07.00.26-k
  qla2xxx: Add pci device id 0x2261.
  qla2xxx: Fix missing device login retries.
  qla2xxx: do not clear slot in outstanding cmd array
  qla2xxx: Remove decrement of sp reference count in abort handler.
  qla2xxx: Add support to show MPI and PEP FW version for ISP27xx.
  ...

Pull MTD updates from Brian Norris:
 "SPI NOR:
   - reduce virtual address space requirements for fsl-quadspi memory map
   - new fsl-quadspi IP support: imx6ul-qspi and imx7d-qspi
   - add new NOR flash device support
   - add new driver for NXP SPI Flash Interface (SPIFI)
   - stop abusing SPI API structs for non-SPI framework
   - fixup DT table matching for new "jedec,spi-nor" string

  NAND:
   - brcmnand: fix big endian MIPS macro usage
   - denali: refactor to use devres, dev_*() printing, etc.
   - OMAP ELM: change the module alias to actually be usable
   - pxa3xx_nand: fixup a few command sequencing issues -- both new and old
      - race conditions in the IRQ handler status clearing
      - problems when a bootloader left interrupts pending
      - config issues when overriding the bootloader configuration
   - new flash device support
   - sunxi_nand:
      - optimize timing configuration by calculation, rather than fixed
        fail-safe values
      - use EDO setting from ONFI
   - r852: fix compiler warnings
   - davinci: add 4KB page support

  Core:
   - oobtest: correct debug print information"

* tag 'for-linus-20150901' of git://git.infradead.org/linux-mtd: (42 commits)
  mtd: mtd_oobtest: Fix the address offset with vary_offset case
  mtd: blkdevs: fix switch-bool compilation warning
  mtd: spi-nor: stop (ab)using struct spi_device_id
  mtd: nand: add Toshiba TC58NVG0S3E to nand_ids table
  mtd: dataflash: Export OF module alias information
  nand: pxa3xx: Increase READ_ID buffer and make the size static
  mtd: nand: pxa3xx-nand: fix random command timeouts
  mtd: nand: pxa3xx_nand: fix early spurious interrupt
  mtd: pxa3xx_nand: add a default chunk size
  mtd: omap_elm: Fix module alias
  mtd: physmap_of: fix null pointer deference when kzalloc returns null
  mtd: nettel: do not ignore mtd_device_register() failure in nettel_init()
  mtd: denali_pci: switch to dev_err()
  mtd: denali_pci: refactor driver using devres API
  mtd: denali_pci: use module_pci_driver() macro
  mtd: denali: hide core part from user in Kconfig
  mtd: spi-nor: add Spansion S25FL204K support
  mtd: spi-nor: Improve Kconfig help text for SPI_FSL_QUADSPI
  mtd: spi-nor: add driver for NXP SPI Flash Interface (SPIFI)
  doc: dt: add documentation for nxp,lpc1773-spifi
  ...

Pull cgroup updates from Tejun Heo:

 - a new PIDs controller is added.  It turns out that PIDs are actually
   an independent resource from kmem due to the limited PID space.

 - more core preparations for the v2 interface.  Once cpu side interface
   is settled, it should be ready for lifting the devel mask.
   for-4.3-unified-base was temporarily branched so that other trees
   (block) can pull cgroup core changes that blkcg changes depend on.

 - a non-critical idr_preload usage bug fix.

* 'for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: pids: fix invalid get/put usage
  cgroup: introduce cgroup_subsys->legacy_name
  cgroup: don't print subsystems for the default hierarchy
  cgroup: make cftype->private a unsigned long
  cgroup: export cgrp_dfl_root
  cgroup: define controller file conventions
  cgroup: fix idr_preload usage
  cgroup: add documentation for the PIDs controller
  cgroup: implement the PIDs subsystem
  cgroup: allow a cgroup subsystem to reject a fork

Pull percpu updates from Tejun Heo:
 "Minor cleanups"

* 'for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  percpu: clean up of schunk->map[] assignment in pcpu_setup_first_chunk
  percpu: update incorrect comment for this_cpu_*() operations

Pull workqueue updates from Tejun Heo:
 "Only three trivial changes for workqueue this time - doc, MAINTAINERS
  and EXPORT_SYMBOL updates"

* 'for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: fix some docbook warnings
  workqueue: Make flush_workqueue() available again to non GPL modules
  workqueue: add myself as a dedicated reviwer

Pull libata updates from Tejun Heo:
 "Nothing interesting.  A couple device specific minor updates and a
  kernel doc change"

* 'for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  ata: pata_arasam_cf: Use devm_clk_get
  libata: fix libata-core.c kernel-doc warning
  ata: sata_rcar: Remove obsolete sata-r8a779* platform_device_id entries

Pull power management and ACPI updates from Rafael Wysocki:
 "From the number of commits perspective, the biggest items are ACPICA
  and cpufreq changes with the latter taking the lead (over 50 commits).

  On the cpufreq front, there are many cleanups and minor fixes in the
  core and governors, driver updates etc.  We also have a new cpufreq
  driver for Mediatek MT8173 chips.

  ACPICA mostly updates its debug infrastructure and adds a number of
  fixes and cleanups for a good measure.

  The Operating Performance Points (OPP) framework is updated with new
  DT bindings and support for them among other things.

  We have a few updates of the generic power domains framework and a
  reorganization of the ACPI device enumeration code and bus type
  operations.

  And a lot of fixes and cleanups all over.

  Included is one branch from the MFD tree as it contains some
  PM-related driver core and ACPI PM changes a few other commits are
  based on.

  Specifics:

   - ACPICA update to upstream revision 20150818 including method
     tracing extensions to allow more in-depth AML debugging in the
     kernel and a number of assorted fixes and cleanups (Bob Moore, Lv
     Zheng, Markus Elfring).

   - ACPI sysfs code updates and a documentation update related to AML
     method tracing (Lv Zheng).

   - ACPI EC driver fix related to serialized evaluations of _Qxx
     methods and ACPI tools updates allowing the EC userspace tool to be
     built from the kernel source (Lv Zheng).

   - ACPI processor driver updates preparing it for future introduction
     of CPPC support and ACPI PCC mailbox driver updates (Ashwin
     Chaugule).

   - ACPI interrupts enumeration fix for a regression related to the
     handling of IRQ attribute conflicts between MADT and the ACPI
     namespace (Jiang Liu).

   - Fixes related to ACPI device PM (Mika Westerberg, Srinidhi
     Kasagar).

   - ACPI device registration code reorganization to separate the
     sysfs-related code and bus type operations from the rest (Rafael J
     Wysocki).

   - Assorted cleanups in the ACPI core (Jarkko Nikula, Mathias Krause,
     Andy Shevchenko, Rafael J Wysocki, Nicolas Iooss).

   - ACPI cpufreq driver and ia64 cpufreq driver fixes and cleanups (Pan
     Xinhui, Rafael J Wysocki).

   - cpufreq core cleanups on top of the previous changes allowing it to
     preseve its sysfs directories over system suspend/resume (Viresh
     Kumar, Rafael J Wysocki, Sebastian Andrzej Siewior).

   - cpufreq fixes and cleanups related to governors (Viresh Kumar).

   - cpufreq updates (core and the cpufreq-dt driver) related to the
     turbo/boost mode support (Viresh Kumar, Bartlomiej Zolnierkiewicz).

   - New DT bindings for Operating Performance Points (OPP), support for
     them in the OPP framework and in the cpufreq-dt driver plus related
     OPP framework fixes and cleanups (Viresh Kumar).

   - cpufreq powernv driver updates (Shilpasri G Bhat).

   - New cpufreq driver for Mediatek MT8173 (Pi-Cheng Chen).

   - Assorted cpufreq driver (speedstep-lib, sfi, integrator) cleanups
     and fixes (Abhilash Jindal, Andrzej Hajda, Cristian Ardelean).

   - intel_pstate driver updates including Skylake-S support, support
     for enabling HW P-states per CPU and an additional vendor bypass
     list entry (Kristen Carlson Accardi, Chen Yu, Ethan Zhao).

   - cpuidle core fixes related to the handling of coupled idle states
     (Xunlei Pang).

   - intel_idle driver updates including Skylake Client support and
     support for freeze-mode-specific idle states (Len Brown).

   - Driver core updates related to power management (Andy Shevchenko,
     Rafael J Wysocki).

   - Generic power domains framework fixes and cleanups (Jon Hunter,
     Geert Uytterhoeven, Rajendra Nayak, Ulf Hansson).

   - Device PM QoS framework update to allow the latency tolerance
     setting to be exposed to user space via sysfs (Mika Westerberg).

   - devfreq support for PPMUv2 in Exynos5433 and a fix for an incorrect
     exynos-ppmu DT binding (Chanwoo Choi, Javier Martinez Canillas).

   - System sleep support updates (Alan Stern, Len Brown, SungEun Kim).

   - rockchip-io AVS support updates (Heiko Stuebner).

   - PM core clocks support fixup (Colin Ian King).

   - Power capping RAPL driver update including support for Skylake H/S
     and Broadwell-H (Radivoje Jovanovic, Seiichi Ikarashi).

   - Generic device properties framework fixes related to the handling
     of static (driver-provided) property sets (Andy Shevchenko).

   - turbostat and cpupower updates (Len Brown, Shilpasri G Bhat,
     Shreyas B Prabhu)"

* tag 'pm+acpi-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (180 commits)
  cpufreq: speedstep-lib: Use monotonic clock
  cpufreq: powernv: Increase the verbosity of OCC console messages
  cpufreq: sfi: use kmemdup rather than duplicating its implementation
  cpufreq: drop !cpufreq_driver check from cpufreq_parse_governor()
  cpufreq: rename cpufreq_real_policy as cpufreq_user_policy
  cpufreq: remove redundant 'policy' field from user_policy
  cpufreq: remove redundant 'governor' field from user_policy
  cpufreq: update user_policy.* on success
  cpufreq: use memcpy() to copy policy
  cpufreq: remove redundant CPUFREQ_INCOMPATIBLE notifier event
  cpufreq: mediatek: Add MT8173 cpufreq driver
  dt-bindings: mediatek: Add MT8173 CPU DVFS clock bindings
  PM / Domains: Fix typo in description of genpd_dev_pm_detach()
  PM / Domains: Remove unusable governor dummies
  PM / Domains: Make pm_genpd_init() available to modules
  PM / domains: Align column headers and data in pm_genpd_summary output
  powercap / RAPL: disable the 2nd power limit properly
  tools: cpupower: Fix error when running cpupower monitor
  PM / OPP: Drop unlikely before IS_ERR(_OR_NULL)
  PM / OPP: Fix static checker warning (broken 64bit big endian systems)
  ...

Pull devicetree updates from Rob Herring:
 - added Frank Rowand as DT maintainer in preparation for Grant's
   retirement.
 - generic MSI binding documentation and a few other minor doc updates
 - fix long standing issue with DT platorm device unregistration
 - fix loop forever bug in of_find_matching_node_by_address()

* tag 'devicetree-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  MAINTAINERS: Add Frank Rowand as DT maintainer
  mtd: nand: pxa3xx: add optional dma for pxa architecture
  Documentation: DT: cpsw: document missing compatible
  Docs: dt: add generic MSI bindings
  drivercore: Fix unregistration path of platform devices
  of/address: Don't loop forever in of_find_matching_node_by_address().
  of: Add vendor prefix for JEDEC Solid State Technology Association
  of/platform: add function to populate default bus
  of: Add vendor prefix for Sharp Corporation

Pull trivial tree updates from Jiri Kosina:
 "The usual stuff from trivial tree for 4.3 (kerneldoc updates, printk()
  fixes, Documentation and MAINTAINERS updates)"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (28 commits)
  MAINTAINERS: update my e-mail address
  mod_devicetable: add space before */
  scsi: a100u2w: trivial typo in printk
  i2c: Fix typo in i2c-bfin-twi.c
  treewide: fix typos in comment blocks
  Doc: fix trivial typo in SubmittingPatches
  proportions: Spelling s/consitent/consistent/
  dm: Spelling s/consitent/consistent/
  aic7xxx: Fix typo in error message
  pcmcia: Fix typo in locking documentation
  scsi/arcmsr: Fix typos in error log
  drm/nouveau/gr: Fix typo in nv10.c
  [SCSI] Fix printk typos in drivers/scsi
  staging: comedi: Grammar s/Enable support a/Enable support for a/
  Btrfs: Spelling s/consitent/consistent/
  README: GTK+ is a acronym
  ASoC: omap: Fix typo in config option description
  mm: tlb.c: Fix error message
  ntfs: super.c: Fix error log
  fix typo in Documentation/SubmittingPatches
  ...

Pull livepatching fix from Jiri Kosina:
 "Livepatching error handling fix"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
  livepatch: Improve error handling in klp_disable_func()

Pull HID updates from Jiri Kosina:
 "to receive patches queued for 4.3 merge window in HID tree. Highlights:

   - a lot of improvements (regarding supported features and devices) to
     Wacom driver, from Aaron Skomra and Jason Gerecke
   - a lot of functional fixes and support for large I2C transfer to
     cp2112 driver, from Ellen Wang
   - HW support improvements to RMI driver, from Andrew Duggan
   - quite some small fixes and device ID additions all over the place"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (44 commits)
  HID: wacom: wacom_setup_numbered_buttons is local to wacom_wac
  HID: wacom: Add support for Express Key Remote.
  HID: wacom: Set button bits based on a new numbered_buttons
  HID: quirks: add QUIRK_NOGET for an other TPV touchscreen
  HID: usbhid: Fix the check for HID_RESET_PENDING in hid_io_error
  HID: i2c-hid: Only disable irq wake if it was successfully enabled during suspend
  HID: wacom: Use tablet-provided touch height/width values for INTUOSHT
  HID: gembird: add new driver to fix Gembird JPD-DualForce 2
  HID: lenovo: Hide middle-button press until release
  HID: lenovo: Add missing return-value check
  HID: lenovo: Use constants for axes names
  HID: wacom: Simplify 'wacom_pl_irq'
  HID: wacom: Do not repeatedly attempt to set device mode on error
  HID: wacom: Do not repeatedly attempt to set device mode on error
  HID: wacom: Remove WACOM_QUIRK_NO_INPUT
  HID: wacom: Replace WACOM_QUIRK_MONITOR with WACOM_DEVICETYPE_WL_MONITOR
  HID: wacom: Use calculated pkglen for wireless touch interface
  HID: sony: Fix DS4 controller reporting rate issues
  HID: chicony: Add support for Acer Aspire Switch 12
  HID: hid-lg: Add USBID for Logitech G29 Wheel
  ...

Pull EDAC fixes from Borislav Petkov:
 "Two minor fixlets this time: AMD MCE decoding correction and
  xgene_edac cleanup"

* tag 'edac_for_4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC, mce_amd: Don't emit 'CE' for Deferred error
  EDAC, xgene: Drop owner assignment from platform_driver

Pull user namespace updates from Eric Biederman:
 "This finishes up the changes to ensure proc and sysfs do not start
  implementing executable files, as the there are application today that
  are only secure because such files do not exist.

  It akso fixes a long standing misfeature of /proc/<pid>/mountinfo that
  did not show the proper source for files bind mounted from
  /proc/<pid>/ns/*.

  It also straightens out the handling of clone flags related to user
  namespaces, fixing an unnecessary failure of unshare(CLONE_NEWUSER)
  when files such as /proc/<pid>/environ are read while <pid> is calling
  unshare.  This winds up fixing a minor bug in unshare flag handling
  that dates back to the first version of unshare in the kernel.

  Finally, this fixes a minor regression caused by the introduction of
  sysfs_create_mount_point, which broke someone's in house application,
  by restoring the size of /sys/fs/cgroup to 0 bytes.  Apparently that
  application uses the directory size to determine if a tmpfs is mounted
  on /sys/fs/cgroup.

  The bind mount escape fixes are present in Al Viros for-next branch.
  and I expect them to come from there.  The bind mount escape is the
  last of the user namespace related security bugs that I am aware of"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  fs: Set the size of empty dirs to 0.
  userns,pidns: Force thread group sharing, not signal handler sharing.
  unshare: Unsharing a thread does not require unsharing a vm
  nsfs: Add a show_path method to fix mountinfo
  mnt: fs_fully_visible enforce noexec and nosuid  if !SB_I_NOEXEC
  vfs: Commit to never having exectuables on proc and sysfs.

Pull x86 clockevent update from Thomas Gleixner:
 "A single commit, which converts HPET clockevents driver to the new
  callbacks"

* 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/hpet: Migrate to new set_state interface

Pull x86 apic updates from Thomas Gleixner:
 "This udpate contains:

   - rework the irq vector array to store a pointer to the irq
     descriptor instead of the irq number to avoid a lookup of the irq
     descriptor in the irq entry path

   - lguest interrupt handling cleanups

   - conversion of the local apic timer to the new clockevent callbacks

   - preparatory changes for the irq argument removal of interrupt flow
     handlers"

* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/irq: Do not dereference irq descriptor before checking it
  tools/lguest: Clean up include dir
  tools/lguest: Fix redefinition of struct virtio_pci_cfg_cap
  x86/irq: Store irq descriptor in vector array
  genirq: Provide irq_desc_has_action
  x86/irq: Get rid of an indentation level
  x86/irq: Rename VECTOR_UNDEFINED to VECTOR_UNUSED
  x86/irq: Replace numeric constant
  x86/irq: Protect smp_cleanup_move
  x86/lguest: Do not setup unused irq vectors
  x86/lguest: Clean up lguest_setup_irq
  x86/apic: Drop local_irq_save/restore in timer callbacks
  x86/apic: Migrate apic timer to new set_state interface
  x86/irq: Use access helper irq_data_get_affinity_mask()
  x86/irq: Use accessor irq_data_get_irq_handler_data()
  x86/irq: Use accessor irq_data_get_node()

Pull irq updates from Thomas Gleixner:
 "This updated pull request does not contain the last few GIC related
  patches which were reported to cause a regression.  There is a fix
  available, but I let it breed for a couple of days first.

  The irq departement provides:

   - new infrastructure to support non PCI based MSI interrupts
   - a couple of new irq chip drivers
   - the usual pile of fixlets and updates to irq chip drivers
   - preparatory changes for removal of the irq argument from interrupt
     flow handlers
   - preparatory changes to remove IRQF_VALID"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (129 commits)
  irqchip/imx-gpcv2: IMX GPCv2 driver for wakeup sources
  irqchip: Add bcm2836 interrupt controller for Raspberry Pi 2
  irqchip: Add documentation for the bcm2836 interrupt controller
  irqchip/bcm2835: Add support for being used as a second level controller
  irqchip/bcm2835: Refactor handle_IRQ() calls out of MAKE_HWIRQ
  PCI: xilinx: Fix typo in function name
  irqchip/gic: Ensure gic_cpu_if_up/down() programs correct GIC instance
  irqchip/gic: Only allow the primary GIC to set the CPU map
  PCI/MSI: pci-xgene-msi: Consolidate chained IRQ handler install/remove
  unicore32/irq: Prepare puv3_gpio_handler for irq argument removal
  tile/pci_gx: Prepare trio_handle_level_irq for irq argument removal
  m68k/irq: Prepare irq handlers for irq argument removal
  C6X/megamode-pic: Prepare megamod_irq_cascade for irq argument removal
  blackfin: Prepare irq handlers for irq argument removal
  arc/irq: Prepare idu_cascade_isr for irq argument removal
  sparc/irq: Use access helper irq_data_get_affinity_mask()
  sparc/irq: Use helper irq_data_get_irq_handler_data()
  parisc/irq: Use access helper irq_data_get_affinity_mask()
  mn10300/irq: Use access helper irq_data_get_affinity_mask()
  irqchip/i8259: Prepare i8259_irq_dispatch for irq argument removal
  ...

Pull timer updates from Thomas Gleixner:
 "Rather large, but nothing exiting:

   - new range check for settimeofday() to prevent that boot time
     becomes negative.
   - fix for file time rounding
   - a few simplifications of the hrtimer code
   - fix for the proc/timerlist code so the output of clock realtime
     timers is accurate
   - more y2038 work
   - tree wide conversion of clockevent drivers to the new callbacks"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (88 commits)
  hrtimer: Handle failure of tick_init_highres() gracefully
  hrtimer: Unconfuse switch_hrtimer_base() a bit
  hrtimer: Simplify get_target_base() by returning current base
  hrtimer: Drop return code of hrtimer_switch_to_hres()
  time: Introduce timespec64_to_jiffies()/jiffies_to_timespec64()
  time: Introduce current_kernel_time64()
  time: Introduce struct itimerspec64
  time: Add the common weak version of update_persistent_clock()
  time: Always make sure wall_to_monotonic isn't positive
  time: Fix nanosecond file time rounding in timespec_trunc()
  timer_list: Add the base offset so remaining nsecs are accurate for non monotonic timers
  cris/time: Migrate to new 'set-state' interface
  kernel: broadcast-hrtimer: Migrate to new 'set-state' interface
  xtensa/time: Migrate to new 'set-state' interface
  unicore/time: Migrate to new 'set-state' interface
  um/time: Migrate to new 'set-state' interface
  sparc/time: Migrate to new 'set-state' interface
  sh/localtimer: Migrate to new 'set-state' interface
  score/time: Migrate to new 'set-state' interface
  s390/time: Migrate to new 'set-state' interface
  ...

Pull ARM SoC 64-bit changes from Olof Johansson:
 "Here's our branch of ARM64 contents for this merge window.

  Most of this is DT contents for new SoCs (or those who have seen new
  device support added).  Maybe we should stop separating out the arm64
  contents here to avoid the kind of internal conflicts as we got this
  time around, where 32- and 64-bit contents conflicted.

  Anyhow, on the actual contents:

  New SoCs:

   - Broadcom North Star 2 (ns2)
   - Marvell Berlin4CT
   - Mediatek MT6795
   - Rockchip RK3368

  In addition, there are enhancements for the following platforms:

   - Mediatek MT8173: cpuidle-dt updates, misc other additions
   - ZyncMP: A bunch of devices added to the existing DTSI
   - Qualcomm MSM8916 and APQ8016 updates for USB, etc.

  + a handful of other updates for various platforms"

* tag 'armsoc-arm64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (47 commits)
  ARM64: dts: vexpress: Use assigned-clock-parents for sp810
  ARM64: dts: mt6795: enable basic SMP bringup for MT6795
  arm64: Enable Marvell Berlin SoC family in defconfig
  arm64: Enable Marvell Berlin SoC family in Kconfig
  arm64: dts: Add dts files for Marvell Berlin4CT SoC
  ARM64: zynqmp: Move SPI nodes to the right location
  ARM64: zynqmp: Move uart and ttcs to the right location
  ARM64: zynqmp: Enable spi flashes on ep108
  ARM64: zynqmp: Add eeprom memories on i2c bus
  ARM64: zynqmp: Enable sdhci on ep108
  ARM64: zynqmp: Enable watchdog on ep108
  ARM64: zynqmp: Add DWC3 usb support
  ARM64: zynqmp: Add SMMU support
  ARM64: zynqmp: Add CANs node for platform
  ARM64: zynqmp: Use zynqmp specific compatible string for gpio
  devicetree: xilinx: zynqmp: add sata node
  PCI: iproc: Fix BCMA dependency in Kconfig
  arm64: dts: Add Broadcom North Star 2 support
  arm64: Add Broadcom iProc family support
  PCI: iproc: Fix ARM64 dependency in Kconfig
  ...

Pull ARM SoC defconfig updates from Olof Johansson:
 "We mostly keep defconfigs updates on a separate branch due to their
  tendency to conflict between platforms and this encourages more
  careful separation of code changes and config changes.

  Most updates here are minor tweaks, enabling new drivers for various
  platforms, and so on.  Renesas also removed one defconfig
  (marzen_defconfig)"

* tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (44 commits)
  ARM: add TC2 PM support to multi_v7_defconfig
  ARM: tegra: Update multi_v7_defconfig
  ARM: tegra: Update default configuration
  ARM: at91/defconfig: at91_dt: remove ARM_AT91_ETHER
  ARM: at91/defconfig: at91_dt: enable DRM hlcdc support
  ARM: at91: at91_dt_defconfig: enable ISI and ov2640 support
  ARM: multi_v7_defconfig: Enable Allwinner P2WI, PWM, DMA_SUN6I, cryptodev
  ARM: sunxi_defconfig: Enable DMA_SUN6I, P2WI, PWM, cryptodev, EXTCON, FHANDLE
  ARM: shmobile: Enable fixed voltage regulator in shmobile_defconfig
  ARM: multi_v7_defconfig: Select MX6UL and MX7D
  ARM: prima2_defconfig: enable build for hwspinlock
  ARM: prima2_defconfig: enable build for RTC
  ARM: prima2_defconfig: enable build for misc input
  ARM: prima2_defconfig: enable build for SiRFSoC SDHC host
  ARM: prima2_defconfig: fix the outdated defconfig
  ARM: imx_v6_v7_defconfig: Select CONFIG_IKCONFIG_PROC
  ARM: defconfig: orion5x: add DT support
  ARM: qcom_defconfig: Enable options for KS8851 ethernet
  ARM: multi_v7_defconfig: Enable support for PWM Regulators
  ARM: multi_v7_defconfig: Enable ST's PWM driver
  ...

Pull ARM DT updates from Olof Johansson:
 "Ladies and gentlemen, we proudly announce to you the latest branch of
  ARM device tree contents for the mainline kernel.  Come and see, come
  and see!

  No less than twentythree thousand lines of additions! Just imagine the
  joy you will have of using your mainline kernel on newly supported
  hardware such as Rockchip Chromebooks, Freescale i.MX6UL boards or
  UniPhier hardware!

  For those of you feeling less adventurous, added hardware support on
  platforms such as TI DM814x and Gumstix Overo platforms might be more
  of your liking.

  We've got something for everyone here!

  Ahem.  Cough.  So, anyway...

  This is the usual large batch of DT updates.  Lots and lots of smaller
  changes, some of the larger ones to point out are:

   - Rockchip veyron (Chromebook) support, as well as several other new boards
   - DRM support on Atmel AT91SAM9N12EK
   - USB additions on some Allwinner platforms
   - Mediatek MT6580 support
   - Freescale i.MX6UL support
   - cleanups for Renesas shmobile platforms
   - lots of added devices on LPC18xx
   - lots of added devices and boards on UniPhier

  There's also some dependent code added here, in particular some
  branches that are primarily merged through the clock tree"

* tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (389 commits)
  ARM: tegra: Add gpio-ranges property
  ARM: tegra: Fix AHB base address on Tegra20, Tegra30 and Tegra114
  ARM: tegra: Add Tegra124 PMU support
  ARM: tegra: jetson-tk1: Add GK20A GPU DT node
  ARM: tegra: venice2: Add GK20A GPU DT node
  ARM: tegra: Add IOMMU node to GK20A
  ARM: tegra: Add CPU regulator to the Jetson TK1 device tree
  ARM: tegra: Add entries for cpufreq on Tegra124
  ARM: tegra: Enable the DFLL on the Jetson TK1
  ARM: tegra: Add the DFLL to Tegra124 device tree
  ARM: dts: zynq: Add devicetree entry for Xilinx Zynq reset controller.
  ARM: dts: UniPhier: fix PPI interrupt CPU mask of timer nodes
  ARM: dts: rockchip: correct regulator power states for suspend
  ARM: dts: rockchip: correct regulator PM properties
  ARM: dts: vexpress: Use assigned-clock-parents for sp810
  pinctrl: tegra: Only set the gpio range if needed
  arm: boot: dts: am4372: add ARM timers and SCU nodes
  ARM: dts: AM4372: Add the am4372-rtc compatible string
  ARM: shmobile: r8a7794 dtsi: Add CPG/MSTP Clock Domain
  ARM: shmobile: r8a7793 dtsi: Add CPG/MSTP Clock Domain
  ...

Pull ARM SoC driver updates from Olof Johansson:
 "Some releases this branch is nearly empty, others we have more stuff.
  It tends to gather drivers that need SoC modification or dependencies
  such that they have to (also) go in through our tree.

  For this release, we have merged in part of the reset controller tree
  (with handshake that the parts we have merged in will remain stable),
  as well as dependencies on a few clock branches.

  In general, new items here are:

   - Qualcomm driver for SMM/SMD, which is how they communicate with the
     coprocessors on (some) of their platforms

   - memory controller work for ARM's PL172 memory controller

   - reset drivers for various platforms

   - PMU power domain support for Marvell platforms

   - Tegra support for T132/T210 SoCs: PMC, fuse, memory controller
     per-SoC support"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (49 commits)
  ARM: tegra: cpuidle: implement cpuidle_state.enter_freeze()
  ARM: tegra: Disable cpuidle if PSCI is available
  soc/tegra: pmc: Use existing pclk reference
  soc/tegra: pmc: Remove unnecessary return statement
  soc: tegra: Remove redundant $(CONFIG_ARCH_TEGRA) in Makefile
  memory: tegra: Add Tegra210 support
  memory: tegra: Add support for a variable-size client ID bitfield
  clk: shmobile: rz: Add CPG/MSTP Clock Domain support
  clk: shmobile: rcar-gen2: Add CPG/MSTP Clock Domain support
  clk: shmobile: r8a7779: Add CPG/MSTP Clock Domain support
  clk: shmobile: r8a7778: Add CPG/MSTP Clock Domain support
  clk: shmobile: Add CPG/MSTP Clock Domain support
  ARM: dove: create a proper PMU driver for power domains, PMU IRQs and resets
  reset: reset-zynq: Adding support for Xilinx Zynq reset controller.
  docs: dts: Added documentation for Xilinx Zynq Reset Controller bindings.
  MIPS: ath79: Add the reset controller to the AR9132 dtsi
  reset: Add a driver for the reset controller on the AR71XX/AR9XXX
  devicetree: Add bindings for the ATH79 reset controller
  reset: socfpga: Update reset-socfpga to read the altr,modrst-offset property
  doc: dt: add documentation for lpc1850-rgu reset driver
  ...

Pull ARM SoC platform updates from Olof Johansson:
 "New or improved SoC support:

   - add support for Atmel's SAMA5D2 SoC
   - add support for Freescale i.MX6UL
   - improved support for TI's DM814x platform
   - misc fixes and improvements for RockChip platforms
   - Marvell MVEBU suspend/resume support

  A few driver changes that ideally would belong in the drivers branch
  are also here (acked by appropriate maintainers):

   - power key input driver for Freescale platforms (svns)
   - RTC driver updates for Freescale platforms (svns/mxc)
   - clk fixes for TI DM814/816X

  + a bunch of other changes for various platforms"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (83 commits)
  ARM: rockchip: pm: Fix PTR_ERR() argument
  ARM: imx: mach-imx6ul: Fix allmodconfig build
  clk: ti: fix for definition movement
  ARM: uniphier: drop v7_invalidate_l1 call at secondary entry
  memory: kill off set_irq_flags usage
  rtc: snvs: select option REGMAP_MMIO
  ARM: brcmstb: select ARCH_DMA_ADDR_T_64BIT for LPAE
  ARM: BCM: Enable ARM erratum 798181 for BRCMSTB
  ARM: OMAP2+: Fix power domain operations regression caused by 81xx
  ARM: rockchip: enable PMU_GPIOINT_WAKEUP_EN when entering shallow suspend
  ARM: rockchip: set correct stabilization thresholds in suspend
  ARM: rockchip: rename osc_switch_to_32k variable
  ARM: imx6ul: add fec MAC refrence clock and phy fixup init
  ARM: imx6ul: add fec bits to GPR syscon definition
  rtc: mxc: add support of device tree
  dt-binding: document the binding for mxc rtc
  rtc: mxc: use a second rtc clock
  ARM: davinci: cp_intc: use IRQCHIP_SKIP_SET_WAKE instead of irq_set_wake callback
  soc: mediatek: Fix SCPSYS compilation
  ARM: at91/soc: add basic support for new sama5d2 SoC
  ...

Pull ARM SoC cleanups from Olof Johansson:
 "A large cleanup branch this release, with a healthy 10k negative line
  delta.

  Most of this is removal of legacy (non-DT) support of shmobile
  platforms.  There is also removal of two non-DT platforms on OMAP, and
  the plat-samsung directory is cleaned out by moving most of the
  previously shared-location-but-not-actually-shared files from there to
  the appropriate mach directories instead.

  There are other sets of changes in here as well:

   - Rob Herring removed use of set_irq_flags under all platforms and
     moved to genirq alternatives

   - a series of timer API conversions to set-state interface

   - ep93xx, nomadik and ux500 cleanups from Linus Walleij

   - __init annotation fixes from Nicolas Pitre

   + a bunch of other changes that all add up to a nice set of cleanups"

* tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (108 commits)
  ARM/fb: ep93xx: switch framebuffer to use modedb only
  ARM: gemini: Setup timer3 as free running timer
  ARM: gemini: Use timer1 for clockevent
  ARM: gemini: Add missing register definitions for gemini timer
  ARM: ep93xx/timer: Migrate to new 'set-state' interface
  ARM: nomadik: push accelerometer down to boards
  ARM: nomadik: move l2x0 setup to device tree
  ARM: nomadik: selectively enable UART0 on boards
  ARM: nomadik: move hog code to use DT hogs
  ARM: shmobile: Fix mismerges
  ARM: ux500: simplify secondary CPU boot
  ARM: SAMSUNG: remove keypad-core header in plat-samsung
  ARM: SAMSUNG: local watchdog-reset header in mach-s3c64xx
  ARM: SAMSUNG: local onenand-core header in mach-s3c64xx
  ARM: SAMSUNG: local irq-uart header in mach-s3c64xx
  ARM: SAMSUNG: local backlight header in mach-s3c64xx
  ARM: SAMSUNG: local ata-core header in mach-s3c64xx
  ARM: SAMSUNG: local regs-usb-hsotg-phy header in mach-s3c64xx
  ARM: SAMSUNG: local spi-core header in mach-s3c24xx
  ARM: SAMSUNG: local nand-core header in mach-s3c24xx
  ...

Pull ARM SoC non-urgent fixes from Olof Johansson:
 "We normally collect non-urgent fixes during the release cycle and
  queue them for the merge window.

  This time around the list is short (in part because some have gone in
  other branches).

   - Maintainers addition for bcm2835
   - IRQ number fix for orion5x (been present since 3.18)
   - DT fix for display on exynos3250
   - Exynos fix to use of IOMEM_ERR_PTR properly"

* tag 'armsoc-fixes-nc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: orion5x: fix legacy orion5x IRQ numbers
  MAINTAINERS: Explicitly add linux-arm-kernel for bcm2835
  MAINTAINERS: Add myself as a bcm2835 co-maintainer.
  ARM: EXYNOS: Use IOMEM_ERR_PTR when function returns iomem
  ARM: dts: fix clock-frequency of display timing0 for exynos3250-rinato

Pull ARC architecture updates from Vineet Gupta:
 "ARC updates for 4.3:

   - perf support for ARCv2 based cores (sampling interrupt, SMP)
   - leftovers for ARCv2 support
   - futex fixes"

* tag 'arc-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARCv2: entry: Fix reserved handler
  ARCv2: perf: Finally introduce HS perf unit
  ARCv2: perf: SMP support
  ARCv2: perf: implement exclusion of event counting in user or kernel mode
  ARCv2: perf: Support sampling events using overflow interrupts
  ARCv2: perf: implement "event_set_period"
  ARC: perf: cap the number of counters to hardware max of 32
  ARC: Eliminate some ARCv2 specific code for ARCompact build
  ARC: add/fix some comments in code - no functional change
  ARC: change some branchs to jumps to resolve linkage errors
  ARC: ensure futex ops are atomic in !LLSC config
  ARC: Enable HAVE_FUTEX_CMPXCHG
  ARC: make futex_atomic_cmpxchg_inatomic() return bimodal
  ARC: futex cosmetics
  ARC: add barriers to futex code
  ARCv2: IOC: Allow boot time disable
  ARCv2: SLC: Allow boot time disable
  ARCv2: Support IO Coherency and permutations involving L1 and L2 caches
  ARC: Enable optimistic spinning for LLSC config
  MAINTAINERS: add git tree for the arc architecture

Pull x86 core platform updates from Ingo Molnar:
 "The main changes are:

   - Intel Atom platform updates.  (Andy Shevchenko)

   - modularity fixlets.  (Paul Gortmaker)

   - x86 platform clockevents driver updates for lguest, uv and Xen.
     (Viresh Kumar)

   - Microsoft Hyper-V TSC fixlet.  (Vitaly Kuznetsov)"

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/platform: Make atom/pmc_atom.c explicitly non-modular
  x86/hyperv: Mark the Hyper-V TSC as unstable
  x86/xen/time: Migrate to new set-state interface
  x86/uv/time: Migrate to new set-state interface
  x86/lguest/timer: Migrate to new set-state interface
  x86/pci/intel_mid_pci: Use proper constants for irq polarity
  x86/pci/intel_mid_pci: Make intel_mid_pci_ops static
  x86/pci/intel_mid_pci: Propagate actual return code
  x86/pci/intel_mid_pci: Work around for IRQ0 assignment
  x86/platform/iosf_mbi: Add Intel Tangier PCI id
  x86/platform/iosf_mbi: Source cleanup
  x86/platform/iosf_mbi: Remove NULL pointer checks for pci_dev_put()
  x86/platform/iosf_mbi: Check return value of debugfs_create properly
  x86/platform/iosf_mbi: Move to dedicated folder
  x86/platform/intel/pmc_atom: Move the PMC-Atom code to arch/x86/platform/atom
  x86/platform/intel/pmc_atom: Add Cherrytrail PMC interface
  x86/platform/intel/pmc_atom: Supply register mappings via PMC object
  x86/platform/intel/pmc_atom: Print index of device in loop
  x86/platform/intel/pmc_atom: Export accessors to PMC registers

Pull x86 mm updates from Ingo Molnar:
 "The dominant change in this cycle was the continued work to isolate
  kernel drivers from MTRR legacies: this tree gets rid of all kernel
  internal driver interfaces to MTRRs (mostly by rewriting it to proper
  PAT interfaces), the only access left is the /proc/mtrr ABI.

  This work was done by Luis R Rodriguez.

  There's also some related PCI interface additions for which I've
  Cc:-ed Bjorn"

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
  x86/mm/mtrr: Remove kernel internal MTRR interfaces: unexport mtrr_add() and mtrr_del()
  s390/io: Add pci_iomap_wc() and pci_iomap_wc_range()
  drivers/dma/iop-adma: Use dma_alloc_writecombine() kernel-style
  drivers/video/fbdev/vt8623fb: Use arch_phys_wc_add() and pci_iomap_wc()
  drivers/video/fbdev/s3fb: Use arch_phys_wc_add() and pci_iomap_wc()
  drivers/video/fbdev/arkfb.c: Use arch_phys_wc_add() and pci_iomap_wc()
  PCI: Add pci_iomap_wc() variants
  drivers/video/fbdev/gxt4500: Use pci_ioremap_wc_bar() to map framebuffer
  drivers/video/fbdev/kyrofb: Use arch_phys_wc_add() and pci_ioremap_wc_bar()
  drivers/video/fbdev/i740fb: Use arch_phys_wc_add() and pci_ioremap_wc_bar()
  PCI: Add pci_ioremap_wc_bar()
  x86/mm: Make kernel/check.c explicitly non-modular
  x86/mm/pat: Make mm/pageattr[-test].c explicitly non-modular
  x86/mm/pat: Add comments to cachemode translation tables
  arch/*/io.h: Add ioremap_uc() to all architectures
  drivers/video/fbdev/atyfb: Use arch_phys_wc_add() and ioremap_wc()
  drivers/video/fbdev/atyfb: Replace MTRR UC hole with strong UC
  drivers/video/fbdev/atyfb: Clarify ioremap() base and length used
  drivers/video/fbdev/atyfb: Carve out framebuffer length fudging into a helper
  x86/mm, asm-generic: Add IOMMU ioremap_uc() variant default
  ...

Pull x86 irq fixlet from Ingo Molnar:
 "A single change that hides the 'HYP:' line in /proc/interrupts when
  it's unused"

* 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/irq: Hide 'HYP:' line in /proc/interrupts when not on Xen/Hyper-V