mediatek-drm build dependency fixes

- add COMMON_CLK dependency for mipi-tx PLL
- add OF dependency for mtk_drm_drv
- add ARM_SMCCC dependency for mtk-hdmi

* tag 'mediatek-drm-fixes-2016-08-12' of git://git.pengutronix.de/git/pza/linux:
  drm/mediatek: add ARM_SMCCC dependency
  drm/mediatek: add CONFIG_OF dependency
  drm/mediatek: add COMMON_CLK dependency

Some AMD fixes and remove workaround now we have pcieport pm.

* 'drm-fixes-4.8' of git://people.freedesktop.org/~agd5f/linux:
  drm/amdgpu: Fix memory trashing if UVD ring test fails
  drm/amdgpu: fix vm init error path
  Revert "drm/radeon: work around lack of upstream ACPI support for D3cold"
  Revert "drm/amdgpu: work around lack of upstream ACPI support for D3cold"

Merge tag 'drm-amdkfd-fixes-2016-08-09' of git://people.freedesktop.org/~gabbayo/linux into drm-fixes

Simple amdkfd fix.

* tag 'drm-amdkfd-fixes-2016-08-09' of git://people.freedesktop.org/~gabbayo/linux:
  drm/amdkfd: print doorbell offset as a hex value

Merge fixes from Andrew Morton:
 "7 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm/memory_hotplug.c: initialize per_cpu_nodestats for hotadded pgdats
  mm, oom: fix uninitialized ret in task_will_free_mem()
  kasan: remove the unnecessary WARN_ONCE from quarantine.c
  mm: memcontrol: fix memcg id ref counter on swap charge move
  mm: memcontrol: fix swap counter leak on swapout from offline cgroup
  proc, meminfo: use correct helpers for calculating LRU sizes in meminfo
  mm/hugetlb: fix incorrect hugepages count during mem hotplug

The following oops occurs after a pgdat is hotadded:

  Unable to handle kernel paging request for data at address 0x00c30001
  Faulting instruction address: 0xc00000000022f8f4
  Oops: Kernel access of bad area, sig: 11 [#1]
  SMP NR_CPUS=2048 NUMA pSeries
  Modules linked in: ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw iptable_filter nls_utf8 isofs sg virtio_balloon uio_pdrv_genirq uio ip_tables xfs libcrc32c sr_mod cdrom sd_mod virtio_net ibmvscsi scsi_transport_srp virtio_pci virtio_ring virtio dm_mirror dm_region_hash dm_log dm_mod
  CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W 4.8.0-rc1-device #110
  task: c000000000ef3080 task.stack: c000000000f6c000
  NIP: c00000000022f8f4 LR: c00000000022f948 CTR: 0000000000000000
  REGS: c000000000f6fa50 TRAP: 0300   Tainted: G        W (4.8.0-rc1-device)
  MSR: 800000010280b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE,TM[E]>  CR: 84002028  XER: 20000000
  CFAR: d000000001d2013c DAR: 0000000000c30001 DSISR: 40000000 SOFTE: 0
  NIP refresh_cpu_vm_stats+0x1a4/0x2f0
  LR refresh_cpu_vm_stats+0x1f8/0x2f0
  Call Trace:
    refresh_cpu_vm_stats+0x1f8/0x2f0 (unreliable)

Add per_cpu_nodestats initialization to the hotplug codepath.

Link: http://lkml.kernel.org/r/1470931473-7090-1-git-send-email-arbab@linux.vnet.ibm.comSigned-off-by: NReza Arbab <arbab@linux.vnet.ibm.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

    mm/oom_kill.c: In function `task_will_free_mem':
    mm/oom_kill.c:767: warning: `ret' may be used uninitialized in this function

If __task_will_free_mem() is never called inside the for_each_process()
loop, ret will not be initialized.

Fixes: 1af8bb43 ("mm, oom: fortify task_will_free_mem()")
Link: http://lkml.kernel.org/r/1470255599-24841-1-git-send-email-geert@linux-m68k.orgSigned-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Acked-by: NTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: NMichal Hocko <mhocko@suse.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

It's quite unlikely that the user will so little memory that the per-CPU
quarantines won't fit into the given fraction of the available memory.
Even in that case he won't be able to do anything with the information
given in the warning.

Link: http://lkml.kernel.org/r/1470929182-101413-1-git-send-email-glider@google.comSigned-off-by: NAlexander Potapenko <glider@google.com>
Acked-by: NAndrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Konovalov <adech.fo@gmail.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kuthonuzo Luruo <kuthonuzo.luruo@hpe.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Since commit 73f576c0 ("mm: memcontrol: fix cgroup creation failure
after many small jobs") swap entries do not pin memcg->css.refcnt
directly.  Instead, they pin memcg->id.ref.  So we should adjust the
reference counters accordingly when moving swap charges between cgroups.

Fixes: 73f576c0 ("mm: memcontrol: fix cgroup creation failure after many small jobs")
Link: http://lkml.kernel.org/r/9ce297c64954a42dc90b543bc76106c4a94f07e8.1470219853.git.vdavydov@virtuozzo.comSigned-off-by: NVladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: NMichal Hocko <mhocko@suse.com>
Acked-by: NJohannes Weiner <hannes@cmpxchg.org>
Cc: <stable@vger.kernel.org>	[3.19+]
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

An offline memory cgroup might have anonymous memory or shmem left
charged to it and no swap.  Since only swap entries pin the id of an
offline cgroup, such a cgroup will have no id and so an attempt to
swapout its anon/shmem will not store memory cgroup info in the swap
cgroup map.  As a result, memcg->swap or memcg->memsw will never get
uncharged from it and any of its ascendants.

Fix this by always charging swapout to the first ancestor cgroup that
hasn't released its id yet.

[hannes@cmpxchg.org: add comment to mem_cgroup_swapout]
[vdavydov@virtuozzo.com: use WARN_ON_ONCE() in mem_cgroup_id_get_online()]
  Link: http://lkml.kernel.org/r/20160803123445.GJ13263@esperanza
Fixes: 73f576c0 ("mm: memcontrol: fix cgroup creation failure after many small jobs")
Link: http://lkml.kernel.org/r/5336daa5c9a32e776067773d9da655d2dc126491.1470219853.git.vdavydov@virtuozzo.comSigned-off-by: NVladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: NJohannes Weiner <hannes@cmpxchg.org>
Acked-by: NMichal Hocko <mhocko@suse.com>
Cc: <stable@vger.kernel.org>	[3.19+]
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

meminfo_proc_show() and si_mem_available() are using the wrong helpers
for calculating the size of the LRUs.  The user-visible impact is that
there appears to be an abnormally high number of unevictable pages.

Link: http://lkml.kernel.org/r/20160805105805.GR2799@techsingularity.netSigned-off-by: NMel Gorman <mgorman@techsingularity.net>
Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

When memory hotplug operates, free hugepages will be freed if the
movable node is offline.  Therefore, /proc/sys/vm/nr_hugepages will be
incorrect.

Fix it by reducing max_huge_pages when the node is offlined.

n-horiguchi@ah.jp.nec.com said:

: dissolve_free_huge_page intends to break a hugepage into buddy, and the
: destination hugepage is supposed to be allocated from the pool of the
: destination node, so the system-wide pool size is reduced.  So adding
: h->max_huge_pages-- makes sense to me.

Link: http://lkml.kernel.org/r/1470624546-902-1-git-send-email-zhongjiang@huawei.comSigned-off-by: Nzhong jiang <zhongjiang@huawei.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: NNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Pull ARM SoC fixes from Arnd Bergmann:
 "A couple of bug fixes have come in for v4.8 so far.  Since the first
  few were originally meant to go into -rc1 (but didn't get sent in time
  for travel reasons), the branch is unfortunately based on top of a
  commit in the middle of the merge window rather than -rc1.

  Content-wise we have:

   - a fix for the last remaining broken build in kernelci, getting
     mach-shmobile to build again with SMP disabled

   - a fix for a realview regression that broke real hardware but not
     the qemu model that everyone uses in practice (needed for v4.7 as
     well)

   - a merge conflict fix for Tegra that also broke v4.7

   - two Kconfig fixes for arm64 build regressions

   - a couple of arm32 build warning fixes (all harmless)

   - fix the RTC on Exynos7 Espresso (which apparently never worked
     right)"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  Merge tag 'pxa-fixes-v4.8' of https://github.com/rjarzmik/linux into randconfig-4.8
  arm64: Kconfig: select HISILICON_IRQ_MBIGEN only if PCI is selected
  arm64: Kconfig: select ALPINE_MSI only if PCI is selected
  ARM: dts: realview: Fix PBX-A9 cache description
  ARM: tegra: fix erroneous address in dts
  ARM: dts: add syscon compatible string for AP syscon
  ARM: dts: add syscon compatible string for CP syscon
  ARM: oxnas: select reset controller framework
  ARM: hide mach-*/ include for ARM_SINGLE_ARMV7M
  ARM: don't include removed directories
  Revert "ARM: aspeed: adapt defconfigs for new CONFIG_PRINTK_TIME"
  ARM: shmobile: don't call platform_can_secondary_boot on UP
  MAINTAINER: alpine: add a mailing list
  ARM: do away with final ARCH_REQUIRE_GPIOLIB
  arm64: dts: Fix RTC by providing rtc_src clock

Pull virtio/vhost fixes and cleanups from Michael Tsirkin:
 "Misc fixes and cleanups all over the place"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio/s390: deprecate old transport
  virtio/s390: keep early_put_chars
  virtio_blk: Fix a slient kernel panic
  virtio-vsock: fix include guard typo
  vhost/vsock: fix vhost virtio_vsock_pkt use-after-free
  9p/trans_virtio: use kvfree() for iov_iter_get_pages_alloc()
  virtio: fix error handling for debug builds
  virtio: fix memory leak in virtqueue_add()

Pull ceph fixes from Ilya Dryomov:
 "A patch for a NULL dereference bug introduced in 4.8-rc1 and a handful
  of static checker fixes"

* tag 'ceph-for-4.8-rc2' of https://github.com/ceph/ceph-client:
  ceph: initialize pathbase in the !dentry case in encode_caps_cb()
  rbd: nuke the 32-bit pool id check
  rbd: destroy header_oloc in rbd_dev_release()
  ceph: fix null pointer dereference in ceph_flush_snaps()
  libceph: using kfree_rcu() to simplify the code
  libceph: make cancel_generic_request() static
  libceph: fix return value check in alloc_msg_with_page_vector()

This is the pxa changes for v4.8 cycle.

This is a tiny fix couple to enable changes in includes in
gpio API without breaking pxa boards.

* tag 'pxa-fixes-v4.8' of https://github.com/rjarzmik/linux:
  ARM: pxa: add module.h for corgi symbol_get/symbol_put usage
  ARM: pxa: add module.h for spitz symbol_get/symbol_put usage

ARM SMCCC is only set for ARMv7 and ARMv8 CPUs, but we currently
allow the driver to be build for older architecture levels as
well, which results in a link failure:

drivers/gpu/built-in.o: In function `mtk_hdmi_hw_make_reg_writable':
:(.text+0x1e737c): undefined reference to `arm_smccc_smc'

This adds a Kconfig dependency. The patch applies on my two
previous fixes that are not yet applied, so please apply all
three to get randconfig builds to work correctly.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Fixes: 8f83f268 ("drm/mediatek: Add HDMI support")
Reviewed-by: NMatthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>

The mediatek DRM driver can be configured for compile testing with
CONFIG_OF disabled, but then fails to link:

drivers/gpu/built-in.o: In function `mtk_drm_bind':
analogix_dp_reg.c:(.text+0x52888): undefined reference to `of_find_device_by_node'
analogix_dp_reg.c:(.text+0x52930): undefined reference to `of_find_device_by_node'

This adds an explicit Kconfig dependency.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Link: https://patchwork.kernel.org/patch/9120871/Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>

On kernel builds without COMMON_CLK, the newly added mediatek drm
driver fails to build:

drivers/gpu/drm/mediatek/mtk_mipi_tx.c:130:16: error: field 'pll_hw' has incomplete type
  struct clk_hw pll_hw;
                ^~~~~~
In file included from ../include/linux/clk.h:16:0,
                 from ../drivers/gpu/drm/mediatek/mtk_mipi_tx.c:14:
drivers/gpu/drm/mediatek/mtk_mipi_tx.c: In function 'mtk_mipi_tx_from_clk_hw':
include/linux/kernel.h:831:48: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
  const typeof( ((type *)0)->member ) *__mptr = (ptr); \
                                                ^
/drivers/gpu/drm/mediatek/mtk_mipi_tx.c:136:9: note: in expansion of macro 'container_of'
  return container_of(hw, struct mtk_mipi_tx, pll_hw);
         ^~~~~~~~~~~~
drivers/gpu/drm/mediatek/mtk_mipi_tx.c: At top level:
drivers/gpu/drm/mediatek/mtk_mipi_tx.c:302:21: error: variable 'mtk_mipi_tx_pll_ops' has initializer but incomplete type
 static const struct clk_ops mtk_mipi_tx_pll_ops = {

This adds the required Kconfig dependency.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.kernel.org/patch/9069061/Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>

Merge misc fixes from Andrew Morton:
 "8 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm/slub.c: run free_partial() outside of the kmem_cache_node->list_lock
  rmap: fix compound check logic in page_remove_file_rmap
  mm, rmap: fix false positive VM_BUG() in page_add_file_rmap()
  mm/page_alloc.c: recalculate some of node threshold when on/offline memory
  mm/page_alloc.c: fix wrong initialization when sysctl_min_unmapped_ratio changes
  thp: move shmem_huge_enabled() outside of SYSFS ifdef
  revert "ARM: keystone: dts: add psci command definition"
  rapidio: dereferencing an error pointer

With debugobjects enabled and using SLAB_DESTROY_BY_RCU, when a
kmem_cache_node is destroyed the call_rcu() may trigger a slab
allocation to fill the debug object pool (__debug_object_init:fill_pool).

Everywhere but during kmem_cache_destroy(), discard_slab() is performed
outside of the kmem_cache_node->list_lock and avoids a lockdep warning
about potential recursion:

  =============================================
  [ INFO: possible recursive locking detected ]
  4.8.0-rc1-gfxbench+ #1 Tainted: G     U
  ---------------------------------------------
  rmmod/8895 is trying to acquire lock:
   (&(&n->list_lock)->rlock){-.-...}, at: [<ffffffff811c80d7>] get_partial_node.isra.63+0x47/0x430

  but task is already holding lock:
   (&(&n->list_lock)->rlock){-.-...}, at: [<ffffffff811cbda4>] __kmem_cache_shutdown+0x54/0x320

  other info that might help us debug this:
  Possible unsafe locking scenario:
        CPU0
        ----
   lock(&(&n->list_lock)->rlock);
   lock(&(&n->list_lock)->rlock);

   *** DEADLOCK ***
   May be due to missing lock nesting notation
   5 locks held by rmmod/8895:
   #0:  (&dev->mutex){......}, at: driver_detach+0x42/0xc0
   #1:  (&dev->mutex){......}, at: driver_detach+0x50/0xc0
   #2:  (cpu_hotplug.dep_map){++++++}, at: get_online_cpus+0x2d/0x80
   #3:  (slab_mutex){+.+.+.}, at: kmem_cache_destroy+0x3c/0x220
   #4:  (&(&n->list_lock)->rlock){-.-...}, at: __kmem_cache_shutdown+0x54/0x320

  stack backtrace:
  CPU: 6 PID: 8895 Comm: rmmod Tainted: G     U          4.8.0-rc1-gfxbench+ #1
  Hardware name: Gigabyte Technology Co., Ltd. H87M-D3H/H87M-D3H, BIOS F11 08/18/2015
  Call Trace:
    __lock_acquire+0x1646/0x1ad0
    lock_acquire+0xb2/0x200
    _raw_spin_lock+0x36/0x50
    get_partial_node.isra.63+0x47/0x430
    ___slab_alloc.constprop.67+0x1a7/0x3b0
    __slab_alloc.isra.64.constprop.66+0x43/0x80
    kmem_cache_alloc+0x236/0x2d0
    __debug_object_init+0x2de/0x400
    debug_object_activate+0x109/0x1e0
    __call_rcu.constprop.63+0x32/0x2f0
    call_rcu+0x12/0x20
    discard_slab+0x3d/0x40
    __kmem_cache_shutdown+0xdb/0x320
    shutdown_cache+0x19/0x60
    kmem_cache_destroy+0x1ae/0x220
    i915_gem_load_cleanup+0x14/0x40 [i915]
    i915_driver_unload+0x151/0x180 [i915]
    i915_pci_remove+0x14/0x20 [i915]
    pci_device_remove+0x34/0xb0
    __device_release_driver+0x95/0x140
    driver_detach+0xb6/0xc0
    bus_remove_driver+0x53/0xd0
    driver_unregister+0x27/0x50
    pci_unregister_driver+0x25/0x70
    i915_exit+0x1a/0x1e2 [i915]
    SyS_delete_module+0x193/0x1f0
    entry_SYSCALL_64_fastpath+0x1c/0xac

Fixes: 52b4b950 ("mm: slab: free kmem_cache_node after destroy sysfs file")
Link: http://lkml.kernel.org/r/1470759070-18743-1-git-send-email-chris@chris-wilson.co.ukReported-by: NDave Gordon <david.s.gordon@intel.com>
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: NVladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: NChristoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Dmitry Safonov <dsafonov@virtuozzo.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Gordon <david.s.gordon@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

In page_remove_file_rmap(.) we have the following check:

  VM_BUG_ON_PAGE(compound && !PageTransHuge(page), page);

This is meant to check for either HugeTLB pages or THP when a compound
page is passed in.

Unfortunately, if one disables CONFIG_TRANSPARENT_HUGEPAGE, then
PageTransHuge(.) will always return false, provoking BUGs when one runs
the libhugetlbfs test suite.

This patch replaces PageTransHuge(), with PageHead() which will work for
both HugeTLB and THP.

Fixes: dd78fedd ("rmap: support file thp")
Link: http://lkml.kernel.org/r/1470838217-5889-1-git-send-email-steve.capper@arm.comSigned-off-by: NSteve Capper <steve.capper@arm.com>
Acked-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Huang Shijie <shijie.huang@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

PageTransCompound() doesn't distinguish THP from from any other type of
compound pages.  This can lead to false-positive VM_BUG_ON() in
page_add_file_rmap() if called on compound page from a driver[1].

I think we can exclude such cases by checking if the page belong to a
mapping.

The VM_BUG_ON_PAGE() is downgraded to VM_WARN_ON_ONCE().  This path
should not cause any harm to non-THP page, but good to know if we step
on anything else.

[1] http://lkml.kernel.org/r/c711e067-0bff-a6cb-3c37-04dfe77d2db1@redhat.com

Link: http://lkml.kernel.org/r/20160810161345.GA67522@black.fi.intel.comSigned-off-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: NLaura Abbott <labbott@redhat.com>
Tested-by: NLaura Abbott <labbott@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Some of node threshold depends on number of managed pages in the node.
When memory is going on/offline, it can be changed and we need to adjust
them.

Add recalculation to appropriate places and clean-up related functions
for better maintenance.

Link: http://lkml.kernel.org/r/1470724248-26780-2-git-send-email-iamjoonsoo.kim@lge.comSigned-off-by: NJoonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: NMel Gorman <mgorman@techsingularity.net>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Before resetting min_unmapped_pages, we need to initialize
min_unmapped_pages rather than min_slab_pages.

Fixes: a5f5f91d (mm: convert zone_reclaim to node_reclaim)
Link: http://lkml.kernel.org/r/1470724248-26780-1-git-send-email-iamjoonsoo.kim@lge.comSigned-off-by: NJoonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: NMel Gorman <mgorman@techsingularity.net>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The newly introduced shmem_huge_enabled() function has two definitions,
but neither of them is visible if CONFIG_SYSFS is disabled, leading to a
build error:

  mm/khugepaged.o: In function `khugepaged':
  khugepaged.c:(.text.khugepaged+0x3ca): undefined reference to `shmem_huge_enabled'

This changes the #ifdef guards around the definition to match those that
are used in the header file.

Fixes: e496cf3d ("thp: introduce CONFIG_TRANSPARENT_HUGE_PAGECACHE")
Link: http://lkml.kernel.org/r/20160809123638.1357593-1-arnd@arndb.deSigned-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Revert commit 51d5d12b ("ARM: keystone: dts: add psci command
definition"), which was inadvertently added twice.

Cc: Russell King - ARM Linux <linux@armlinux.org.uk>
Cc: Vitaly Andrianov <vitalya@ti.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Original patch: https://lkml.org/lkml/2016/8/4/32

If riocm_ch_alloc() fails then we end up dereferencing the error
pointer.

The problem is that we're not unwinding in the reverse order from how we
allocate things so it gets confusing.  I've changed this around so now
"ch" is NULL when we are done with it after we call riocm_put_channel().
That way we can check if it's NULL and avoid calling riocm_put_channel()
on it twice.

I renamed err_nodev to err_put_new_ch so that it better reflects what
the goto does.

Then because we had flipping things around, it means we don't neeed to
initialize the pointers to NULL and we can remove an if statement and
pull things in an indent level.

Link: http://lkml.kernel.org/r/20160805152406.20713-1-alexandre.bounine@idt.comSigned-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NAlexandre Bounine <alexandre.bounine@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com>
Cc: Barry Wood <barry.wood@idt.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Even when PCI is disabled, ARCH_HISI selects HISILICON_IRQ_MBIGEN
triggerring the following config warning:

warning: (ARM64 && HISILICON_IRQ_MBIGEN) selects ARM_GIC_V3_ITS which
	has unmet direct dependencies (PCI && PCI_MSI)

This patch makes selection of HISILICON_IRQ_MBIGEN conditional on PCI.

Cc: Ma Jun <majun258@huawei.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: NSudeep Holla <sudeep.holla@arm.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Even when PCI is disabled, ARCH_ALPINE selects ALPINE_MSI triggerring
the following config warning:

warning: (ARCH_ALPINE) selects ALPINE_MSI which has unmet direct
		dependencies (PCI)

This patch makes selection of ALPINE_MSI conditional on PCI.

Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: NAntoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: NSudeep Holla <sudeep.holla@arm.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Clearly QEMU is very permissive in how its PL310 model may be set up,
but the real hardware turns out to be far more particular about things
actually being correct. Fix up the DT description so that the real
thing actually boots:

- The arm,data-latency and arm,tag-latency properties need 3 cells to
  be valid, otherwise we end up retaining the default 8-cycle latencies
  which leads pretty quickly to lockup.
- The arm,dirty-latency property is only relevant to L210/L220, so get
  rid of it.
- The cache geometry override also leads to lockup and/or general
  misbehaviour. Irritatingly, the manual doesn't state the actual PL310
  configuration, but based on the boardfile code and poking registers
  from the Boot Monitor, it would seem to be 8 sets of 16KB ways.

With that, we can successfully boot to enjoy the fun of mismatched FPUs...

Cc: stable@vger.kernel.org
Signed-off-by: NRobin Murphy <robin.murphy@arm.com>
Tested-by: NMark Rutland <mark.rutland@arm.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

c90bb7b9 enabled the high speed UARTs of the Jetson TK1. Due to a merge
quirk, wrong addresses were introduced. Fix it and use the correct
addresses.

Thierry let me know, that there is another patch (b5896f67 in
linux-next) in preparation which removes all the '0,' prefixes of unit
addresses on Tegra124 and is planned to go upstream in 4.8, so
this patch will get reverted then.

But for the moment, this patch is necessary to fix current misbehaviour.

Fixes: c90bb7b9 ("ARM: tegra: Add high speed UARTs to Jetson TK1 device tree")
Signed-off-by: NRalf Ramsauer <ralf@ramses-pyramidenbau.de>
Acked-by: NThierry Reding <thierry.reding@gmail.com>
Cc: stable@vger.kernel.org # v4.7
Cc: linux-tegra@vger.kernel.org
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

This syscon needs to be looked up by clocks, flash protection
and other consumers.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

This syscon needs to be looked up by flash protection, CLCD
display output settings and other consumers.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

For unknown reasons, we have to enable three symbols for a platform
to use a reset controller driver, otherwise we get a Kconfig
warning:

warning: (MACH_OX810SE) selects RESET_OXNAS which has unmet direct dependencies (RESET_CONTROLLER)

This selects the other two symbols for oxnas.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NNeil Armstrong <narmstrong@baylibre.com>

The machine specific header files are exported for traditional
platforms, but not for the ones that use ARCH_MULTIPLATFORM, as
they could conflict with one another.

In case of ARM_SINGLE_ARMV7M, we end up also exporting them,
but that appears to be a mistake, and we should treat it the
same way as ARCH_MULTIPLATFORM here.

'make W=1' warns about this because it passes -Wmissing-includes
to gcc and the directories are not actually present.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Three platforms used to have header files in include/mach that
are now all gone, but the removed directories are still being
included, which leads to -Wmissing-include-dirs warnings.

This removes the extra -I flags.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Add access checks to sys_oabi_epoll_wait() and sys_oabi_semtimedop().
This fixes CVE-2016-3857, a local privilege escalation under
CONFIG_OABI_COMPAT.

Cc: stable@vger.kernel.org
Reported-by: NChiachih Wu <wuchiachih@gmail.com>
Reviewed-by: NKees Cook <keescook@chromium.org>
Reviewed-by: NNicolas Pitre <nico@linaro.org>
Signed-off-by: NDave Weinstein <olorin@google.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Pull btrfs fixes from Chris Mason:
 "Some fixes for btrfs send/recv and fsync from Filipe and Robbie Ko.

  Bonus points to Filipe for already having xfstests in place for many
  of these"

* 'for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: remove unused function btrfs_add_delayed_qgroup_reserve()
  Btrfs: improve performance on fsync against new inode after rename/unlink
  Btrfs: be more precise on errors when getting an inode from disk
  Btrfs: send, don't bug on inconsistent snapshots
  Btrfs: send, avoid incorrect leaf accesses when sending utimes operations
  Btrfs: send, fix invalid leaf accesses due to incorrect utimes operations
  Btrfs: send, fix warning due to late freeing of orphan_dir_info structures
  Btrfs: incremental send, fix premature rmdir operations
  Btrfs: incremental send, fix invalid paths for rename operations
  Btrfs: send, add missing error check for calls to path_loop()
  Btrfs: send, fix failure to move directories with the same name around
  Btrfs: add missing check for writeback errors on fsync

Pull metag architecture fix from James Hogan:
 "A single fix for a boot crash since a commit in the merge window.

  Metag was unusual in calling show_mem() early, before setup_per_cpu_pageset(),
  which is no longer safe.  It doesn't add much value to the log, so the
  fix just drops the call"

* tag 'metag-for-v4.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
  metag: Drop show_mem() from mem_init()

If get_maintainer is not given any filename arguments on the command line,
the standard input is read for a patch.

But checking if a VCS has a file named &STDIN is not a good idea and fails.

Verify the nominal input file is not &STDIN before checking the VCS.

Fixes: 4cad35a7 ("get_maintainer.pl: reduce need for command-line option -f")
Reported-by: NChristopher Covington <cov@codeaurora.org>
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>