The AArch64 instruction set contains load/store pair memory accessors,
so use these in our copy_*_user routines to transfer 16 bytes per
iteration.
Reviewed-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

The compat ptrace interface allows access to the TLS register, hardware
breakpoints and watchpoints, syscall number. However, a native task
using the native ptrace interface to debug compat tasks (e.g. multi-arch
gdb) only has access to the general and VFP register sets. The compat
ptrace interface cannot be accessed from a native task.

This patch adds a new user_aarch32_ptrace_view which contains the TLS,
hardware breakpoint/watchpoint and syscall number regsets in addition to
the existing GPR and VFP regsets. This view is backwards compatible with
the previous kernels. Core dumping of 32-bit tasks and compat ptrace are
not affected since the original user_aarch32_view is preserved.
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
Reported-by: NYao Qi <yao.qi@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

Plumb up Makefile arguments for the already supported formats in the kbuild
system: lz4, bzip2, lzma, and lzo.

Note that just as with Image.gz, these images are not self-decompressing and
the booting firmware still needs to handle decompression before launching the
kernel image.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

The ARMv8.1 architecture extensions introduce support for hardware
updates of the access and dirty information in page table entries. With
TCR_EL1.HA enabled, when the CPU accesses an address with the PTE_AF bit
cleared in the page table, instead of raising an access flag fault the
CPU sets the actual page table entry bit. To ensure that kernel
modifications to the page tables do not inadvertently revert a change
introduced by hardware updates, the exclusive monitor (ldxr/stxr) is
adopted in the pte accessors.

When TCR_EL1.HD is enabled, a write access to a memory location with the
DBM (Dirty Bit Management) bit set in the corresponding pte
automatically clears the read-only bit (AP[2]). Such DBM bit maps onto
the Linux PTE_WRITE bit and to check whether a writable (DBM set) page
is dirty, the kernel tests the PTE_RDONLY bit. In order to allow
read-only and dirty pages, the kernel needs to preserve the software
dirty bit. The hardware dirty status is transferred to the software
dirty bit in ptep_set_wrprotect() (using load/store exclusive loop) and
pte_modify().
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

Commit 68234df4 ("arm64: kill flush_cache_all()") removed
soft_reset() from the kernel. This was the only caller of
setup_mm_for_reboot(), so remove that also.
Signed-off-by: NMark Salter <msalter@redhat.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

Mark Brown reported an allnoconfig build failure in -next:

  Today's linux-next fails to build an arm64 allnoconfig due to "mm:
  make GUP handle pfn mapping unless FOLL_GET is requested" which
  causes:

  >       arm64-allnoconfig
  > ../mm/gup.c:51:4: error: implicit declaration of function
    'update_mmu_cache' [-Werror=implicit-function-declaration]

Fix the error by moving the function to asm/pgtable.h, as is the case
for most other architectures.
Reported-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

Since commit 9d3bfbb4 ("arm64: Combine coherent and non-coherent
swiotlb dma_ops"), __dma_common_mmap is no longer shared between two
callers, so roll it into the remaining one.
Signed-off-by: NRobin Murphy <robin.murphy@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

Commit 68234df4 ("arm64: kill flush_cache_all()") removed the
only users of these macros.
Signed-off-by: NDaniel Thompson <daniel.thompson@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

On 64bit kernel, the dump_mem gives 32 bit addresses
on the stack dump. This gives unorganized information regarding
the 64bit values on the stack. Hence, modified to get a complete 64bit memory
dump.

With patch:
[   93.534801] Process insmod (pid: 1587, stack limit = 0xffffffc976be4058)
[   93.541441] Stack: (0xffffffc976be7cf0 to 0xffffffc976be8000)
[   93.547136] 7ce0:                                   ffffffc976be7d00 ffffffc00008163c
[   93.554898] 7d00: ffffffc976be7d40 ffffffc0000f8a44 ffffffc00098ef38 ffffffbffc000088
[   93.562659] 7d20: ffffffc00098ef50 ffffffbffc0000c0 0000000000000001 ffffffbffc000070
[   93.570419] 7d40: ffffffc976be7e40 ffffffc0000f935c 0000000000000000 000000002b424090
[   93.578179] 7d60: 000000002b424010 0000007facc555f4 0000000080000000 0000000000000015
[   93.585937] 7d80: 0000000000000116 0000000000000069 ffffffc00097b000 ffffffc976be4000
[   93.593694] 7da0: 0000000000000064 0000000000000072 000000000000006e 000000000000003f
[   93.601453] 7dc0: 000000000000feff 000000000000fff1 ffffffbffc002028 0000000000000124
[   93.609211] 7de0: ffffffc976be7e10 0000000000000001 ffffff8000000000 ffffffbbffff0000
[   93.616969] 7e00: ffffffc976be7e60 0000000000000000 0000000000000000 0000000000000000
[   93.624726] 7e20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[   93.632484] 7e40: 0000007fcc474550 ffffffc0000841ec 000000002b424010 0000007facda0710
[   93.640241] 7e60: ffffffffffffffff ffffffc0000be6dc ffffff80007d2000 000000000001c010
[   93.647999] 7e80: ffffff80007e0ae0 ffffff80007e09d0 ffffff80007edf70 0000000000000288
[   93.655757] 7ea0: 00000000000002e8 0000000000000000 0000000000000000 0000001c0000001b
[   93.663514] 7ec0: 0000000000000009 0000000000000007 000000002b424090 000000000001c010
[   93.671272] 7ee0: 000000002b424010 0000007faccd3a48 0000000000000000 0000000000000000
[   93.679030] 7f00: 0000007fcc4743f8 0000007fcc4743f8 0000000000000069 0000000000000003
[   93.686787] 7f20: 0101010101010101 0000000000000004 0000000000000020 00000000000003f3
[   93.694544] 7f40: 0000007facb95664 0000007facda7030 0000007facc555d0 0000000000498378
[   93.702301] 7f60: 0000000000000000 000000002b424010 0000007facda0710 000000002b424090
[   93.710058] 7f80: 0000007fcc474698 0000000000498000 0000007fcc474ebb 0000000000474f58
[   93.717815] 7fa0: 0000000000498000 0000000000000000 0000000000000000 0000007fcc474550
[   93.725573] 7fc0: 00000000004104bc 0000007fcc474430 0000007facc555f4 0000000080000000
[   93.733330] 7fe0: 000000002b424090 0000000000000069 0950020128000244 4104000008000004
[   93.741084] Call trace:

The above output makes a debugger life a lot more easier.
Signed-off-by: NRohit Thapliyal <r.thapliyal@samsung.com>
Signed-off-by: NManinder Singh <maninder1.s@samsung.com>
Reviewed-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

arch_find_n_match_cpu_physical_id parses the device tree to get the
device node for a given logical cpu index. However, since ARM PMUs get
probed after the CPU device nodes are stashed while registering the
cpus, we can use of_cpu_device_node_get to avoid another DT parse.

This patch replaces arch_find_n_match_cpu_physical_id with
of_cpu_device_node_get to reuse the stashed value directly instead.

Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: NSudeep Holla <sudeep.holla@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

ARM64 pmu prints an error message in event_init() when
no hardware PMU is available. This is pretty annoying as
it keeps printing the message for every single trial, flooding
the kernel logs, unnecessarily. The return code is sufficient for
the user to figure out the reason.
Signed-off-by: NSuzuki K. Poulose <suzuki.poulose@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>

Pull perf fix from Thomas Gleixner:
 "A single fix for the intel cqm perf facility to prevent IPIs from
  interrupt context"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel/cqm: Return cached counter value from IRQ context

Pull x86 fixes from Thomas Gleixner:
 "This update contains:

   - the manual revert of the SYSCALL32 changes which caused a
     regression

   - a fix for the MPX vma handling

   - three fixes for the ioremap 'is ram' checks.

   - PAT warning fixes

   - a trivial fix for the size calculation of TLB tracepoints

   - handle old EFI structures gracefully

  This also contains a PAT fix from Jan plus a revert thereof.  Toshi
  explained why the code is correct"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm/pat: Revert 'Adjust default caching mode translation tables'
  x86/asm/entry/32: Revert 'Do not use R9 in SYSCALL32' commit
  x86/mm: Fix newly introduced printk format warnings
  mm: Fix bugs in region_is_ram()
  x86/mm: Remove region_is_ram() call from ioremap
  x86/mm: Move warning from __ioremap_check_ram() to the call site
  x86/mm/pat, drivers/media/ivtv: Move the PAT warning and replace WARN() with pr_warn()
  x86/mm/pat, drivers/infiniband/ipath: Replace WARN() with pr_warn()
  x86/mm/pat: Adjust default caching mode translation tables
  x86/fpu: Disable dependent CPU features on "noxsave"
  x86/mpx: Do not set ->vm_ops on MPX VMAs
  x86/mm: Add parenthesis for TLB tracepoint size calculation
  efi: Handle memory error structures produced based on old versions of standard

Toshi explains:

"No, the default values need to be set to the fallback types,
 i.e. minimal supported mode.  For WC and WT, UC is the fallback type.

 When PAT is disabled, pat_init() does update the tables below to
 enable WT per the default BIOS setup.  However, when PAT is enabled,
 but CPU has PAT -errata, WT falls back to UC per the default values."

Revert: ca1fec58 'x86/mm/pat: Adjust default caching mode translation tables'
Requested-by: NToshi Kani <toshi.kani@hp.com>
Cc: Jan Beulich <jbeulich@suse.de>
Link: http://lkml.kernel.org/r/1437577776.3214.252.camel@hp.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>

Peter reported the following potential crash which I was able to
reproduce with his test program,

[  148.765788] ------------[ cut here ]------------
[  148.765796] WARNING: CPU: 34 PID: 2840 at kernel/smp.c:417 smp_call_function_many+0xb6/0x260()
[  148.765797] Modules linked in:
[  148.765800] CPU: 34 PID: 2840 Comm: perf Not tainted 4.2.0-rc1+ #4
[  148.765803]  ffffffff81cdc398 ffff88085f105950 ffffffff818bdfd5 0000000000000007
[  148.765805]  0000000000000000 ffff88085f105990 ffffffff810e413a 0000000000000000
[  148.765807]  ffffffff82301080 0000000000000022 ffffffff8107f640 ffffffff8107f640
[  148.765809] Call Trace:
[  148.765810]  <NMI>  [<ffffffff818bdfd5>] dump_stack+0x45/0x57
[  148.765818]  [<ffffffff810e413a>] warn_slowpath_common+0x8a/0xc0
[  148.765822]  [<ffffffff8107f640>] ? intel_cqm_stable+0x60/0x60
[  148.765824]  [<ffffffff8107f640>] ? intel_cqm_stable+0x60/0x60
[  148.765825]  [<ffffffff810e422a>] warn_slowpath_null+0x1a/0x20
[  148.765827]  [<ffffffff811613f6>] smp_call_function_many+0xb6/0x260
[  148.765829]  [<ffffffff8107f640>] ? intel_cqm_stable+0x60/0x60
[  148.765831]  [<ffffffff81161748>] on_each_cpu_mask+0x28/0x60
[  148.765832]  [<ffffffff8107f6ef>] intel_cqm_event_count+0x7f/0xe0
[  148.765836]  [<ffffffff811cdd35>] perf_output_read+0x2a5/0x400
[  148.765839]  [<ffffffff811d2e5a>] perf_output_sample+0x31a/0x590
[  148.765840]  [<ffffffff811d333d>] ? perf_prepare_sample+0x26d/0x380
[  148.765841]  [<ffffffff811d3497>] perf_event_output+0x47/0x60
[  148.765843]  [<ffffffff811d36c5>] __perf_event_overflow+0x215/0x240
[  148.765844]  [<ffffffff811d4124>] perf_event_overflow+0x14/0x20
[  148.765847]  [<ffffffff8107e7f4>] intel_pmu_handle_irq+0x1d4/0x440
[  148.765849]  [<ffffffff811d07a6>] ? __perf_event_task_sched_in+0x36/0xa0
[  148.765853]  [<ffffffff81219bad>] ? vunmap_page_range+0x19d/0x2f0
[  148.765854]  [<ffffffff81219d11>] ? unmap_kernel_range_noflush+0x11/0x20
[  148.765859]  [<ffffffff814ce6fe>] ? ghes_copy_tofrom_phys+0x11e/0x2a0
[  148.765863]  [<ffffffff8109e5db>] ? native_apic_msr_write+0x2b/0x30
[  148.765865]  [<ffffffff8109e44d>] ? x2apic_send_IPI_self+0x1d/0x20
[  148.765869]  [<ffffffff81065135>] ? arch_irq_work_raise+0x35/0x40
[  148.765872]  [<ffffffff811c8d86>] ? irq_work_queue+0x66/0x80
[  148.765875]  [<ffffffff81075306>] perf_event_nmi_handler+0x26/0x40
[  148.765877]  [<ffffffff81063ed9>] nmi_handle+0x79/0x100
[  148.765879]  [<ffffffff81064422>] default_do_nmi+0x42/0x100
[  148.765880]  [<ffffffff81064563>] do_nmi+0x83/0xb0
[  148.765884]  [<ffffffff818c7c0f>] end_repeat_nmi+0x1e/0x2e
[  148.765886]  [<ffffffff811d07a6>] ? __perf_event_task_sched_in+0x36/0xa0
[  148.765888]  [<ffffffff811d07a6>] ? __perf_event_task_sched_in+0x36/0xa0
[  148.765890]  [<ffffffff811d07a6>] ? __perf_event_task_sched_in+0x36/0xa0
[  148.765891]  <<EOE>>  [<ffffffff8110ab66>] finish_task_switch+0x156/0x210
[  148.765898]  [<ffffffff818c1671>] __schedule+0x341/0x920
[  148.765899]  [<ffffffff818c1c87>] schedule+0x37/0x80
[  148.765903]  [<ffffffff810ae1af>] ? do_page_fault+0x2f/0x80
[  148.765905]  [<ffffffff818c1f4a>] schedule_user+0x1a/0x50
[  148.765907]  [<ffffffff818c666c>] retint_careful+0x14/0x32
[  148.765908] ---[ end trace e33ff2be78e14901 ]---

The CQM task events are not safe to be called from within interrupt
context because they require performing an IPI to read the counter value
on all sockets. And performing IPIs from within IRQ context is a
"no-no".

Make do with the last read counter value currently event in
event->count when we're invoked in this context.
Reported-by: NPeter Zijlstra <peterz@infradead.org>
Signed-off-by: NMatt Fleming <matt.fleming@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vikas Shivappa <vikas.shivappa@intel.com>
Cc: Kanaka Juvva <kanaka.d.juvva@intel.com>
Cc: Will Auld <will.auld@intel.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/1437490509-15373-1-git-send-email-matt@codeblueprint.co.ukSigned-off-by: NThomas Gleixner <tglx@linutronix.de>

Pull USB fixes from Greg KH:
 "Here's a few USB and PHY fixes for 4.2-rc4.

  Nothing major, the shortlog has the full details.

  All of these have been in linux-next successfully"

* tag 'usb-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (21 commits)
  USB: OHCI: fix bad #define in ohci-tmio.c
  cdc-acm: Destroy acm_minors IDR on module exit
  usb-storage: Add ignore-device quirk for gm12u320 based usb mini projectors
  usb-storage: ignore ZTE MF 823 card reader in mode 0x1225
  USB: OHCI: Fix race between ED unlink and URB submission
  usb: core: lpm: set lpm_capable for root hub device
  xhci: do not report PLC when link is in internal resume state
  xhci: prevent bus_suspend if SS port resuming in phase 1
  xhci: report U3 when link is in resume state
  xhci: Calculate old endpoints correctly on device reset
  usb: xhci: Bugfix for NULL pointer deference in xhci_endpoint_init() function
  xhci: Workaround to get D3 working in Intel xHCI
  xhci: call BIOS workaround to enable runtime suspend on Intel Braswell
  usb: dwc3: Reset the transfer resource index on SET_INTERFACE
  usb: gadget: udc: core: Fix argument of dma_map_single for IOMMU
  usb: gadget: mv_udc_core: fix phy_regs I/O memory leak
  usb: ulpi: ulpi_init should be executed in subsys_initcall
  phy: berlin-usb: fix divider for BG2
  phy: berlin-usb: fix divider for BG2CD
  phy/pxa: add HAS_IOMEM dependency
  ...

Pull tty/serial driver fixes from Greg KH:
 "Here are a number of small serial and tty fixes for reported issues.

  All have been in linux-next successfully"

* tag 'tty-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: vt: Fix !TASK_RUNNING diagnostic warning from paste_selection()
  serial: core: Fix crashes while echoing when closing
  m32r: Add ioreadXX/iowriteXX big-endian mmio accessors
  Revert "serial: imx: initialized DMA w/o HW flow enabled"
  sc16is7xx: fix FIFO address of secondary UART
  sc16is7xx: fix Kconfig dependencies
  serial: etraxfs-uart: Fix release etraxfs_uart_ports
  tty/vt: Fix the memory leak in visual_init
  serial: amba-pl011: Fix devm_ioremap_resource return value check
  n_tty: signal and flush atomically

Pull staging driver fixes from Greg KH:
 "Here are a number of iio and staging driver fixes for reported issues
  for 4.2-rc4.

  All have been in linux-next for a while with no problems"

* tag 'staging-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (34 commits)
  iio:light:stk3310: make endianness independent of host
  iio:light:stk3310: move device register to end of probe
  iio: mma8452: use iio event type IIO_EV_TYPE_MAG
  iio: mcp320x: Fix NULL pointer dereference
  iio: adc: vf610: fix the adc register read fail issue
  iio: mlx96014: Replace offset sign
  iio: magnetometer: mmc35240: fix SET/RESET sequence
  iio: magnetometer: mmc35240: Fix SET/RESET mask
  iio: magnetometer: mmc35240: Fix crash in pm suspend
  iio:magnetometer:bmc150_magn: output intended variable
  iio:magnetometer:bmc150_magn: add regmap dependency
  staging: vt6656: check ieee80211_bss_conf bssid not NULL
  staging: vt6655: check ieee80211_bss_conf bssid not NULL
  iio: tmp006: Check channel info on write
  iio: sx9500: Add missing init in sx9500_buffer_pre{en,dis}able()
  iio:light:ltr501: fix regmap dependency
  iio:light:ltr501: fix variable in ltr501_init
  iio: sx9500: fix bug in compensation code
  iio: sx9500: rework error handling of raw readings
  iio: magnetometer: mmc35240: fix available sampling frequencies
  ...

Pull char/misc driver fixes from Greg KH:
 "Here are some char and misc driver fixes for reported issues.

  One parport patch is reverted as it was incorrect, thanks to testing
  by the 0-day bot"

* tag 'char-misc-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  parport: Revert "parport: fix memory leak"
  mei: prevent unloading mei hw modules while the device is opened.
  misc: mic: scif bug fix for vmalloc_to_page crash
  parport: fix freeing freed memory
  parport: fix memory leak
  parport: fix error handling

This reverts commit 23c40591 ("parport: fix memory leak")

par_dev->state was already being removed in parport_unregister_device().
Reported-by: NYing Huang <ying.huang@intel.com>
Signed-off-by: NSudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge tag 'trace-v4.2-rc2-fix3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull ftrace fix from Steven Rostedt:
 "Back in 3.16 the ftrace code was redesigned and cleaned up to remove
  the double iteration list (one for registered ftrace ops, and one for
  registered "global" ops), to just use one list.  That simplified the
  code but also broke the function tracing filtering on pid.

  This updates the code to handle the filtering again with the new
  logic"

* tag 'trace-v4.2-rc2-fix3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace: Fix breakage of set_ftrace_pid

Pull libnvdimm fix from Dan Williams:
 "A minor fix for the libnvdimm subsystem.

  This is not critical.  The problem can be worked around in userspace
  by putting the namespace temporarily into raw mode
  (ndctl_namespace_set_raw_mode() from libndctl), but that is awkward
  for management utilities.

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm:
  libnvdimm: fix namespace seed creation

Pull md fixes from Neil Brown:
 "Some md fixes for 4.2

  Several are tagged for -stable.
  A few aren't because they are not very, serious or because they are in
  the 'experimental' cluster code"

* tag 'md/4.2-fixes' of git://neil.brown.name/md:
  md/raid5: clear R5_NeedReplace when no longer needed.
  Fix read-balancing during node failure
  md-cluster: fix bitmap sub-offset in bitmap_read_sb
  md: Return error if request_module fails and returns positive value
  md: Skip cluster setup in case of error while reading bitmap
  md/raid1: fix test for 'was read error from last working device'.
  md: Skip cluster setup for dm-raid
  md: flush ->event_work before stopping array.
  md/raid10: always set reshape_safe when initializing reshape_position.
  md/raid5: avoid races when changing cache size.

Pull MTD fixes from Brian Norris:
 "Two trivial updates.  I meant to send these much earlier, but I've
  been preoccupied.

   - Add MAINTAINERS entry for diskonchip g3 driver

   - Fix an overlooked conflict in bitfield value assignments

  The latter update is a bit overdue, but there's no reason to wait any
  longer"

* tag 'for-linus-20150724' of git://git.infradead.org/linux-mtd:
  mtd: nand: Fix NAND_USE_BOUNCE_BUFFER flag conflict
  MAINTAINERS: mtd: docg3: add docg3 maintainer

A new BLK namespace "seed" device is created whenever the current seed
is successfully probed.  However, if that namespace is assigned to a BTT
it may never directly experience a successful probe as it is a
subordinate device to a BTT configuration.

The effect of the current code is that no new namespaces can be
instantiated, after the seed namespace, to consume available BLK DPA
capacity.  Fix this by treating a successful BTT probe event as a
successful probe event for the backing namespace.
Reported-by: NNicholas Moulin <nicholas.w.moulin@linux.intel.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

Pull block fixes from Jens Axboe:
 "Four smaller fixes for the current series.  This contains:

   - A fix for clones of discard bio's, that can cause data corruption.
     From Martin.

   - A fix for null_blk, where in certain queue modes it could access a
     request after it had been freed.  From Mike Krinkin.

   - An error handling leak fix for blkcg, from Tejun.

   - Also from Tejun, export of the functions that a file system needs
     to implement cgroup writeback support"

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: Do a full clone when splitting discard bios
  block: export bio_associate_*() and wbc_account_io()
  blkcg: fix gendisk reference leak in blkg_conf_prep()
  null_blk: fix use-after-free problem

Pull libata fixes from Tejun Heo:
 "A couple important fixes.

   - A block layer change which removed restriction on max transfer size
     led to silent data corruption on some devices.  A new quirk is
     added to restore the old size limit for the reported device.  If it
     gets reported on more devices, we might have to consider restoring
     the restriction for ATA devices by default.

   - There finally is a SSD which is confirmed to cause data corruption
     on TRIM regardless of which flavor is used.  A new quirk is added
     and the device is blacklisted

   - Other device-specific workarounds"

* 'for-4.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  libata: Do not blacklist M510DC
  libata: increase the timeout when setting transfer mode
  libata: add ATA_HORKAGE_MAX_SEC_1024 to revert back to previous max_sectors limit
  libata: force disable trim for SuperSSpeed S238
  libata: add ATA_HORKAGE_NOTRIM
  libata: add ATA_HORKAGE_BROKEN_FPDMA_AA quirk for HP 250GB SATA disk VB0250EAVER
  ata: pmp: add quirk for Marvell 4140 SATA PMP

Pull MMC fixes from Ulf Hansson:
 "Here are some mmc fixes intended for v4.2 rc4.

  Note, most of the changes are for the sdhci-esdhc-imx controller,
  which also required us to modify some related DTS files.  Those
  changes have been acked by the SoC maintainer.

  MMC core:
   - Fix a reference inbalance issue for power_ro_lock_show() sysfs handler

  MMC host:
   - omap_hsmmc: Fix IRQ errorhandling for CD, DTO, and CRC
   - sdhci: Prevent a kernel panic while using DMA
   - mtk-sd: Let it depend on HAS_DMA to prevent build errors
   - sdhci-esdhc: Make 8BIT bus work
   - sdhci-esdhc-imx: Fix some regressions for DT based platforms
   - sdhci-pxav3: Fix a regression for DT based platforms"

* tag 'mmc-4.2-rc3' of git://git.linaro.org/people/ulf.hansson/mmc:
  mmc: sdhci-pxav3: fix platform_data is not initialized
  dts: mmc: fsl-imx-esdhc: remove fsl,cd-controller support
  mmc: sdhci-esdhc-imx: clear f_max in boarddata
  mmc: sdhci-esdhc-imx: remove duplicated dts parsing
  mmc: sdhci: make max-frequency property in device tree work
  mmc: sdhci-esdhc-imx: move all non dt probe code into one function
  mmc: sdhci-esdhc-imx: fix cd regression for dt platform
  dts: imx7: fix sd card gpio polarity specified in device tree
  dts: imx25: fix sd card gpio polarity specified in device tree
  dts: imx6: fix sd card gpio polarity specified in device tree
  dts: imx53: fix sd card gpio polarity specified in device tree
  dts: imx51: fix sd card gpio polarity specified in device tree
  mmc: sdhci-esdhc: Make 8BIT bus work
  mmc: block: Add missing mmc_blk_put() in power_ro_lock_show()
  mmc: MMC_MTK should depend on HAS_DMA
  mmc: sdhci check parameters before call dma_free_coherent
  mmc: omap_hsmmc: Handle BADA, DEB and CEB interrupts
  mmc: omap_hsmmc: Fix DTO and DCRC handling

Pull input fixes from Dmitry Torokhov:
 "A fix for the warnings/oops when handling HID devices with "unnamed"
  LEDs and couple of other driver fixups""

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: goodix - fix touch coordinates on WinBook TW100 and TW700
  Input: LEDs - skip unnamed LEDs
  Input: usbtouchscreen - avoid unresponsive TSC-30 touch screen
  Input: elantech - force resolution of 31 u/mm
  Input: zforce - don't overwrite the stack

Merge tag 'regulator-fix-v4.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "As well as some driver specific fixes there's several fixes here for
  the core support for regulators supplying other regulators fixing both
  an issue with ACPI support (which had never been tested before) and
  some error handling and device removal issues that Javier noticed"

* tag 'regulator-fix-v4.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: core: Fix memory leak in regulator_resolve_supply()
  regulator: core: Increase refcount for regulator supply's module
  regulator: core: Handle full constraints systems when resolving supplies
  regulator: 88pm800: fix LDO vsel_mask value
  regulator: max8973: Fix up control flag option for bias control
  regulator: s2mps11: Fix GPIO suspend enable shift wrapping bug

Pull spi fixes from Mark Brown:
 "A small collection of pretty much unremarkable driver specific fixes
  here plus the addition of a new device ID to spidev which requires no
  other code changes"

* tag 'spi-fix-v4.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: imx: Fix small DMA transfers
  spi: zynq: missing break statement
  spi: SPI_ZYNQMP_GQSPI should depend on HAS_DMA
  spi: spidev: add compatible value for LTC2488
  spi: img-spfi: fix support for speeds up to 1/4th input clock

Pull sound fixes from Takashi Iwai:
 "This has been a calm week again: one minor lockdep fix for PCM core,
  and the most of the rest are HD-audio quirks and fixups for various
  chips and machines"

* tag 'sound-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Add headset mic pin quirk for a Dell device
  ALSA: hda - remove one pin from ALC292_STANDARD_PINS
  ALSA: hda - Add new GPU codec ID 0x10de007d to snd-hda
  ALSA: hda: add new AMD PCI IDs with proper driver caps
  ALSA: hda - Fix Skylake codec timeout
  ALSA: hda - Add headset mic support for Acer Aspire V5-573G
  ALSA: sparc: Add missing kfree in error path
  ALSA: pcm: Fix lockdep warning with nonatomic PCM ops

Pull HID fixes from Jiri Kosina:

 - kernel crash fixes for multitouch and wacom drivers, by Brent Adam
   and Dan Carpenter

 - cp2112 data packet race condition corruption fix, by Antonio Borneo

 - a few new device IDs for wacom and microsoft drivers

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: cp2112: fix to force single data-report reply
  HID: wacom: Enable pad device for older Bamboo Touch tablets
  HID: multitouch: Fix fields from pen report ID being interpreted for multitouch
  HID: microsoft: Add quirk for MS Surface Type/Touch cover
  HID: wacom: NULL dereferences on error in probe()

Pull drm fixes from Dave Airlie:
 "Aome amdgpu, one i915, one ttm and one hlcdc, nothing too scary.

  All seems fine for about this time"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/ttm: recognize ARM64 arch in ioprot handler
  drm/amdgpu/cz/dpm: properly report UVD and VCE clock levels
  drm/amdgpu/cz: implement voltage validation properly
  drm/amdgpu: add VCE harvesting instance query
  drm/amdgpu: implement VCE 3.0 harvesting support (v4)
  drm/amdgpu/dce10: Re-set VBLANK interrupt state when enabling a CRTC
  drm/amdgpu/dce11: Re-set VBLANK interrupt state when enabling a CRTC
  drm: Stop resetting connector state to unknown
  drm/i915: Use two 32bit reads for select 64bit REG_READ ioctls
  drm: atmel-hlcdc: fix vblank initial state

Pull arch/tile bugfix from Chris Metcalf:
 "This fixes a bug in freeing the initramfs memory"

* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  tile: use free_bootmem_late() for initrd

Pull KVM fixes from Paolo Bonzini:
 "Everything related to the new quirks and memory type features:

   - small improvements to the quirks API

   - extending one of the quirks from just AMD to Intel as well, because
     4.2 can show the same problem with problematic firmware on Intel
     too"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: rename quirk constants to KVM_X86_QUIRK_*
  KVM: vmx: obey KVM_QUIRK_CD_NW_CLEARED
  KVM: x86: introduce kvm_check_has_quirk
  KVM: MTRR: simplify kvm_mtrr_get_guest_memory_type
  KVM: MTRR: fix memory type handling if MTRR is completely disabled

Commit 4104d326 ("ftrace: Remove global function list and call function
directly") simplified the ftrace code by removing the global_ops list with a
new design. But this cleanup also broke the filtering of PIDs that are added
to the set_ftrace_pid file.

Add back the proper hooks to have pid filtering working once again.

Cc: stable@vger.kernel.org # 3.16+
Reported-by: NMatt Fleming <matt@console-pimps.org>
Reported-by: NRichard Weinberger <richard.weinberger@gmail.com>
Tested-by: NMatt Fleming <matt@console-pimps.org>
Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>

The touchscreen on the WinBook TW100 and TW700 don't match the default
display, with 0,0 touches being reported when touching at the bottom
right of the screen.

  1280,800             0,800
         +-------------+
         |             |
         |             |
         |             |
         +-------------+
    1280,0             0,0

It's unfortunately impossible to detect this problem with data from the
DSDT, or other auxiliary metadata, so fallback to quirking this specific
model of tablet instead.
Signed-off-by: NBastien Nocera <hadess@hadess.net>
Reviewed-by: NBenjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Devices may declare more LEDs than what is known to input-leds
(HID does this for some devices). Instead of showing ugly warnings
on connect and, even worse, oopsing on disconnect, let's simply
ignore LEDs that are not known to us.
Reported-and-tested-by: NVlastimil Babka <vbabka@suse.cz>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>