Pull core fixes from Thomas Gleixner:
 "A small set of updates for core code:

   - Prevent tracing in functions which are called from trace patching
     via stop_machine() to prevent executing half patched function trace
     entries.

   - Remove old GCC workarounds

   - Remove pointless includes of notifier.h"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Remove workaround for unreachable warnings from old GCC
  notifier: Remove notifier header file wherever not used
  watchdog: Mark watchdog touch functions as notrace

Pull watchdog fixlet from Wim Van Sebroeck:
 "Document support for r8a774a1"

* tag 'linux-watchdog-4.19-rc2' of git://www.linux-watchdog.org/linux-watchdog:
  dt-bindings: watchdog: renesas-wdt: Document r8a774a1 support

Pull clk fixes from Stephen Boyd:
 "Two small fixes, one for the x86 Stoney SoC to get a more accurate clk
  frequency and the other to fix a bad allocation in the Nuvoton NPCM7XX
  driver"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: x86: Set default parent to 48Mhz
  clk: npcm7xx: fix memory allocation

Pull arm64 fixes from Will Deacon:
 "A few arm64 fixes came in this week, specifically fixing some nasty
  truncation of return values from firmware calls and resolving a
  VM_BUG_ON due to accessing uninitialised struct pages corresponding to
  NOMAP pages.

  Summary:

   - Fix typos in SVE documentation

   - Fix type-checking and implicit truncation for SMCCC calls

   - Force CONFIG_HOLES_IN_ZONE=y so that SLAB doesn't fall over NOMAP
     regions"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: always enable CONFIG_HOLES_IN_ZONE
  arm/arm64: smccc-1.1: Handle function result as parameters
  arm/arm64: smccc-1.1: Make return values unsigned long
  Documentation/arm64/sve: Couple of improvements and typos

Pull xen fixes from Juergen Gross:

 - minor cleanup avoiding a warning when building with new gcc

 - a patch to add a new sysfs node for Xen frontend/backend drivers to
   make it easier to obtain the state of a pv device

 - two fixes for 32-bit pv-guests to avoid intermediate L1TF vulnerable
   PTEs

* tag 'for-linus-4.19b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86/xen: remove redundant variable save_pud
  xen: export device state to sysfs
  x86/pae: use 64 bit atomic xchg function in native_ptep_get_and_clear
  x86/xen: don't write ptes directly in 32-bit PV guests

Pull m68k fix from Geert Uytterhoeven:
 "Just a single fix for a bug introduced during the merge window: fix
  wrong date and time on PMU-based Macs"

* tag 'm68k-for-v4.19-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/mac: Use correct PMU response format

Pull i2c fixes from Wolfram Sang:

 - regression fixes for i801 and designware

 - better API and leak fix for releasing DMA safe buffers

 - better greppable strings for the bitbang algorithm

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: sh_mobile: fix leak when using DMA bounce buffer
  i2c: sh_mobile: define start_ch() void as it only returns 0 anyhow
  i2c: refactor function to release a DMA safe buffer
  i2c: algos: bit: make the error messages grepable
  i2c: designware: Re-init controllers with pm_disabled set on resume
  i2c: i801: Allow ACPI AML access I/O ports not reserved for SMBus

Commit 6d526ee2 ("arm64: mm: enable CONFIG_HOLES_IN_ZONE for NUMA")
only enabled HOLES_IN_ZONE for NUMA systems because the NUMA code was
choking on the missing zone for nomap pages. This problem doesn't just
apply to NUMA systems.

If the architecture doesn't set HAVE_ARCH_PFN_VALID, pfn_valid() will
return true if the pfn is part of a valid sparsemem section.

When working with multiple pages, the mm code uses pfn_valid_within()
to test each page it uses within the sparsemem section is valid. On
most systems memory comes in MAX_ORDER_NR_PAGES chunks which all
have valid/initialised struct pages. In this case pfn_valid_within()
is optimised out.

Systems where this isn't true (e.g. due to nomap) should set
HOLES_IN_ZONE and provide HAVE_ARCH_PFN_VALID so that mm tests each
page as it works with it.

Currently non-NUMA arm64 systems can't enable HOLES_IN_ZONE, leading to
a VM_BUG_ON():

| page:fffffdff802e1780 is uninitialized and poisoned
| raw: ffffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffff
| raw: ffffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffff
| page dumped because: VM_BUG_ON_PAGE(PagePoisoned(p))
| ------------[ cut here ]------------
| kernel BUG at include/linux/mm.h:978!
| Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[...]
| CPU: 1 PID: 25236 Comm: dd Not tainted 4.18.0 #7
| Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015
| pstate: 40000085 (nZcv daIf -PAN -UAO)
| pc : move_freepages_block+0x144/0x248
| lr : move_freepages_block+0x144/0x248
| sp : fffffe0071177680
[...]
| Process dd (pid: 25236, stack limit = 0x0000000094cc07fb)
| Call trace:
|  move_freepages_block+0x144/0x248
|  steal_suitable_fallback+0x100/0x16c
|  get_page_from_freelist+0x440/0xb20
|  __alloc_pages_nodemask+0xe8/0x838
|  new_slab+0xd4/0x418
|  ___slab_alloc.constprop.27+0x380/0x4a8
|  __slab_alloc.isra.21.constprop.26+0x24/0x34
|  kmem_cache_alloc+0xa8/0x180
|  alloc_buffer_head+0x1c/0x90
|  alloc_page_buffers+0x68/0xb0
|  create_empty_buffers+0x20/0x1ec
|  create_page_buffers+0xb0/0xf0
|  __block_write_begin_int+0xc4/0x564
|  __block_write_begin+0x10/0x18
|  block_write_begin+0x48/0xd0
|  blkdev_write_begin+0x28/0x30
|  generic_perform_write+0x98/0x16c
|  __generic_file_write_iter+0x138/0x168
|  blkdev_write_iter+0x80/0xf0
|  __vfs_write+0xe4/0x10c
|  vfs_write+0xb4/0x168
|  ksys_write+0x44/0x88
|  sys_write+0xc/0x14
|  el0_svc_naked+0x30/0x34
| Code: aa1303e0 90001a01 91296421 94008902 (d4210000)
| ---[ end trace 1601ba47f6e883fe ]---

Remove the NUMA dependency.

Link: https://www.spinics.net/lists/arm-kernel/msg671851.html
Cc: <stable@vger.kernel.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Reviewed-by: Pavel Tatashin <pavel.tatashin@microsoft.com>
Tested-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

Now that the 68k Mac port has adopted the via-pmu driver, it must decode
the PMU response accordingly otherwise the date and time will be wrong.

Fixes: ebd72227 ("macintosh/via-pmu: Replace via-pmu68k driver with via-pmu driver")
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

Pull drm fixes from Dave Airlie:
 "Regular fixes pull:

   - Mediatek has a bunch of fixes to their RDMA and Overlay engines.

   - i915 has some Cannonlake/Geminilake watermark workarounds, LSPCON
     fix, HDCP free fix, audio fix and a ppgtt reference counting fix.

   - amdgpu has some SRIOV, Kasan, memory leaks and other misc fixes"

* tag 'drm-fixes-2018-08-31' of git://anongit.freedesktop.org/drm/drm: (35 commits)
  drm/i915/audio: Hook up component bindings even if displays are disabled
  drm/i915: Increase LSPCON timeout
  drm/i915: Stop holding a ref to the ppgtt from each vma
  drm/i915: Free write_buf that we allocated with kzalloc.
  drm/i915: Fix glk/cnl display w/a #1175
  drm/amdgpu: Need to set moved to true when evict bo
  drm/amdgpu: Remove duplicated power source update
  drm/amd/display: Fix memory leak caused by missed dc_sink_release
  drm/amdgpu: fix holding mn_lock while allocating memory
  drm/amdgpu: Power on uvd block when hw_fini
  drm/amdgpu: Update power state at the end of smu hw_init.
  drm/amdgpu: Fix vce initialize failed on Kaveri/Mullins
  drm/amdgpu: Enable/disable gfx PG feature in rlc safe mode
  drm/amdgpu: Adjust the VM size based on system memory size v2
  drm/mediatek: fix connection from RDMA2 to DSI1
  drm/mediatek: update some variable name from ovl to comp
  drm/mediatek: use layer_nr function to get layer number to init plane
  drm/mediatek: add function to return RDMA layer number
  drm/mediatek: add function to return OVL layer number
  drm/mediatek: add function to get layer number for component
  ...

They are too noisy
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull power management fixes from Rafael Wysocki:
 "These address a corner case in the menu cpuidle governor and fix error
  handling in the PM core's generic clock management code.

  Specifics:

   - Make the menu cpuidle governor avoid stopping the scheduler tick if
     the predicted idle duration exceeds the tick period length, but the
     selected idle state is shallow and deeper idle states with high
     target residencies are available (Rafael Wysocki).

   - Make the PM core's generic clock management code use a proper data
     type for one variable to make error handling work (Dan Carpenter)"

* tag 'pm-4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpuidle: menu: Retain tick when shallow state is selected
  PM / clk: signedness bug in of_pm_clk_add_clks()

Merge a generic clock management fix for 4.19-rc2.

* pm-core:
  PM / clk: signedness bug in of_pm_clk_add_clks()

System clk provided in ST soc can be set to:
48Mhz, non-spread
25Mhz, spread
To get accurate rate, we need it to set it at non-spread
option which is 48Mhz.
Signed-off-by: Akshu Agrawal <akshu.agrawal@amd.com>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Fixes: 421bf6a1 ("clk: x86: Add ST oscout platform clock")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

We only freed the bounce buffer after successful DMA, missing the cases
where DMA setup may have gone wrong. Use a better location which always
gets called after each message and use 'stop_after_dma' as a flag for a
successful transfer.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

After various refactoring over the years, start_ch() doesn't return
errno anymore, so make the function return void. This saves the error
handling when calling it which in turn eases cleanup of resources of a
future patch.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

a) rename to 'put' instead of 'release' to match 'get' when obtaining
   the buffer
b) change the argument order to have the buffer as first argument
c) add a new argument telling the function if the message was
   transferred. This allows the function to be used also in cases
   where setting up DMA failed, so the buffer needs to be freed without
   syncing to the message buffer.

Also convert the only user.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Yep, I went looking for one of these, and I wasn't able to find it
easily.  That's worse than a line which is 82-chars long, IMHO.
Signed-off-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

On Bay Trail and Cherry Trail devices we set the pm_disabled flag for I2C
busses which the OS shares with the PUNIT as these need special handling.
Until now we called dev_pm_syscore_device(dev, true) for I2C controllers
with this flag set to keep these I2C controllers always on.

After commit 12864ff8 ("ACPI / LPSS: Avoid PM quirks on suspend and
resume from hibernation"), this no longer works. This commit modifies
lpss_iosf_exit_d3_state() to only run if lpss_iosf_enter_d3_state() has ran
before it, so that it does not run on a resume from hibernate (or from S3).

On these systems the conditions for lpss_iosf_enter_d3_state() to run
never become true, so lpss_iosf_exit_d3_state() never gets called and
the 2 LPSS DMA controllers never get forced into D0 mode, instead they
are left in their default automatic power-on when needed mode.

The not forcing of D0 mode for the DMA controllers enables these systems
to properly enter S0ix modes, which is a good thing.

But after entering S0ix modes the I2C controller connected to the PMIC
no longer works, leading to e.g. broken battery monitoring.

The _PS3 method for this I2C controller looks like this:

            Method (_PS3, 0, NotSerialized)  // _PS3: Power State 3
            {
                If ((((PMID == 0x04) || (PMID == 0x05)) || (PMID == 0x06)))
                {
                    Return (Zero)
                }

                PSAT |= 0x03
                Local0 = PSAT /* \_SB_.I2C5.PSAT */
            }

Where PMID = 0x05, so we enter the Return (Zero) path on these systems.

So even if we were to not call dev_pm_syscore_device(dev, true) the
I2C controller will be left in D0 rather then be switched to D3.

Yet on other Bay and Cherry Trail devices S0ix is not entered unless *all*
I2C controllers are in D3 mode. This combined with the I2C controller no
longer working now that we reach S0ix states on these systems leads to me
believing that the PUNIT itself puts the I2C controller in D3 when all
other conditions for entering S0ix states are true.

Since now the I2C controller is put in D3 over a suspend/resume we must
re-initialize it afterwards and that does indeed fix it no longer working.

This commit implements this fix by:

1) Making the suspend_late callback a no-op if pm_disabled is set and
making the resume_early callback skip the clock re-enable (since it now was
not disabled) while still doing the necessary I2C controller re-init.

2) Removing the dev_pm_syscore_device(dev, true) call, so that the suspend
and resume callbacks are actually called. Normally this would cause the
ACPI pm code to call _PS3 putting the I2C controller in D3, wreaking havoc
since it is shared with the PUNIT, but in this special case the _PS3 method
is a no-op so we can safely allow a "fake" suspend / resume.

Fixes: 12864ff8 ("ACPI / LPSS: Avoid PM quirks on suspend and resume ...")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=200861
Cc: 4.15+ <stable@vger.kernel.org> # 4.15+
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Commit 7ae81952cda ("i2c: i801: Allow ACPI SystemIO OpRegion to conflict
with PCI BAR") made it possible for AML code to access SMBus I/O ports
by installing custom SystemIO OpRegion handler and blocking i80i driver
access upon first AML read/write to this OpRegion.

However, while ThinkPad T560 does have SystemIO OpRegion declared under
the SMBus device, it does not access any of the SMBus registers:

    Device (SMBU)
    {
        ...

        OperationRegion (SMBP, PCI_Config, 0x50, 0x04)
        Field (SMBP, DWordAcc, NoLock, Preserve)
        {
            ,   5,
            TCOB,   11,
            Offset (0x04)
        }

        Name (TCBV, 0x00)
        Method (TCBS, 0, NotSerialized)
        {
            If ((TCBV == 0x00))
            {
            TCBV = (\_SB.PCI0.SMBU.TCOB << 0x05)
            }

            Return (TCBV) /* \_SB_.PCI0.SMBU.TCBV */
        }

        OperationRegion (TCBA, SystemIO, TCBS (), 0x10)
        Field (TCBA, ByteAcc, NoLock, Preserve)
        {
            Offset (0x04),
            ,   9,
            CPSC,   1
        }
    }

Problem with the current approach is that it blocks all I/O port access
and because this system has touchpad connected to the SMBus controller
after first AML access (happens during suspend/resume cycle) the
touchpad fails to work anymore.

Fix this so that we allow ACPI AML I/O port access if it does not touch
the region reserved for the SMBus.

Fixes: 7ae81952cda ("i2c: i801: Allow ACPI SystemIO OpRegion to conflict with PCI BAR")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=200737Reported-by: Yussuf Khalil <dev@pp3345.net>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Pull block fixes from Jens Axboe:
 "Small collection of fixes that should go into this series. This pull
  contains:

   - NVMe pull request with three small fixes (via Christoph)

   - Kill useless NULL check before kmem_cache_destroy (Chengguang Xu)

   - Xen block driver pull request with persistent grant flushing fixes
     (Juergen Gross)

   - Final wbt fixes, wrapping up the changes for this series. These
     have been heavily tested (me)

   - cdrom info leak fix (Scott Bauer)

   - ATA dma quirk for SQ201 (Linus Walleij)

   - Straight forward bsg refcount_t conversion (John Pittman)"

* tag 'for-linus-20180830' of git://git.kernel.dk/linux-block:
  cdrom: Fix info leak/OOB read in cdrom_ioctl_drive_status
  nvmet: free workqueue object if module init fails
  nvme-fcloop: Fix dropped LS's to removed target port
  nvme-pci: add a memory barrier to nvme_dbbuf_update_and_check_event
  block: bsg: move atomic_t ref_count variable to refcount API
  block: remove unnecessary condition check
  ata: ftide010: Add a quirk for SQ201
  blk-wbt: remove dead code
  blk-wbt: improve waking of tasks
  blk-wbt: abstract out end IO completion handler
  xen/blkback: remove unused pers_gnts_lock from struct xen_blkif_ring
  xen/blkback: move persistent grants flags to bool
  xen/blkfront: reorder tests in xlblk_init()
  xen/blkfront: cleanup stale persistent grants
  xen/blkback: don't keep persistent grants too long

Pull mtd fixes from Boris Brezillon:
 "Raw NAND fixes:

   - denali: Fix a regression caused by the nand_scan() rework

   - docg4: Fix a build error when gcc decides to not iniline some
     functions (can be reproduced with gcc 4.1.2):

* tag 'mtd/for-4.19-rc2' of git://git.infradead.org/linux-mtd:
  mtd: rawnand: denali: do not pass zero maxchips to nand_scan()
  mtd: rawnand: docg4: Remove wrong __init annotations

Pull MMC fixes from Ulf Hansson:
 "MMC core:
   - Fix unsupported parallel dispatch of requests

  MMC host:
   - atmel-mci/android-goldfish: Fixup logic of sg_copy_{from,to}_buffer
   - renesas_sdhi_internal_dmac: Prevent IRQ-storm due of DMAC IRQs
   - renesas_sdhi_internal_dmac: Fixup bad register offset"

* tag 'mmc-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: renesas_sdhi_internal_dmac: mask DMAC interrupts
  mmc: renesas_sdhi_internal_dmac: fix #define RST_RESERVED_BITS
  mmc: block: Fix unsupported parallel dispatch of requests
  mmc: android-goldfish: fix bad logic of sg_copy_{from,to}_buffer conversion
  mmc: atmel-mci: fix bad logic of sg_copy_{from,to}_buffer conversion

If someone has the silly idea to write something along those lines:

	extern u64 foo(void);

	void bar(struct arm_smccc_res *res)
	{
		arm_smccc_1_1_smc(0xbad, foo(), res);
	}

they are in for a surprise, as this gets compiled as:

	0000000000000588 <bar>:
	 588:   a9be7bfd        stp     x29, x30, [sp, #-32]!
	 58c:   910003fd        mov     x29, sp
	 590:   f9000bf3        str     x19, [sp, #16]
	 594:   aa0003f3        mov     x19, x0
	 598:   aa1e03e0        mov     x0, x30
	 59c:   94000000        bl      0 <_mcount>
	 5a0:   94000000        bl      0 <foo>
	 5a4:   aa0003e1        mov     x1, x0
	 5a8:   d4000003        smc     #0x0
	 5ac:   b4000073        cbz     x19, 5b8 <bar+0x30>
	 5b0:   a9000660        stp     x0, x1, [x19]
	 5b4:   a9010e62        stp     x2, x3, [x19, #16]
	 5b8:   f9400bf3        ldr     x19, [sp, #16]
	 5bc:   a8c27bfd        ldp     x29, x30, [sp], #32
	 5c0:   d65f03c0        ret
	 5c4:   d503201f        nop

The call to foo "overwrites" the x0 register for the return value,
and we end up calling the wrong secure service.

A solution is to evaluate all the parameters before assigning
anything to specific registers, leading to the expected result:

	0000000000000588 <bar>:
	 588:   a9be7bfd        stp     x29, x30, [sp, #-32]!
	 58c:   910003fd        mov     x29, sp
	 590:   f9000bf3        str     x19, [sp, #16]
	 594:   aa0003f3        mov     x19, x0
	 598:   aa1e03e0        mov     x0, x30
	 59c:   94000000        bl      0 <_mcount>
	 5a0:   94000000        bl      0 <foo>
	 5a4:   aa0003e1        mov     x1, x0
	 5a8:   d28175a0        mov     x0, #0xbad
	 5ac:   d4000003        smc     #0x0
	 5b0:   b4000073        cbz     x19, 5bc <bar+0x34>
	 5b4:   a9000660        stp     x0, x1, [x19]
	 5b8:   a9010e62        stp     x2, x3, [x19, #16]
	 5bc:   f9400bf3        ldr     x19, [sp, #16]
	 5c0:   a8c27bfd        ldp     x29, x30, [sp], #32
	 5c4:   d65f03c0        ret
Reported-by: Julien Grall <julien.grall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

Commit cafa0010 ("Raise the minimum required gcc version to 4.6")
bumped the minimum GCC version to 4.6 for all architectures.

This effectively reverts commit da541b20 ("objtool: Skip unreachable
warnings for GCC 4.4 and older"), which was a workaround for GCC 4.4 or
older.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: linux-kbuild@vger.kernel.org
Link: https://lkml.kernel.org/r/1535341183-19994-1-git-send-email-yamada.masahiro@socionext.com

The conversion of the hotplug notifiers to a state machine left the
notifier.h includes around in some places. Remove them.
Signed-off-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/1535114033-4605-1-git-send-email-mojha@codeaurora.org

Some architectures need to use stop_machine() to patch functions for
ftrace, and the assumption is that the stopped CPUs do not make function
calls to traceable functions when they are in the stopped state.

Commit ce4f06dc ("stop_machine: Touch_nmi_watchdog() after
MULTI_STOP_PREPARE") added calls to the watchdog touch functions from
the stopped CPUs and those functions lack notrace annotations.  This
leads to crashes when enabling/disabling ftrace on ARM kernels built
with the Thumb-2 instruction set.

Fix it by adding the necessary notrace annotations.

Fixes: ce4f06dc ("stop_machine: Touch_nmi_watchdog() after MULTI_STOP_PREPARE")
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: oleg@redhat.com
Cc: tj@kernel.org
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180821152507.18313-1-vincent.whitchurch@axis.com

Merge tag 'riscv-for-linus-4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux

Pull RISC-V fixes from Palmer Dabbelt:
 "RISC-V Fixes and Cleanups for 4.19-rc2

  This contains a handful of patches that filtered their way in during
  the merge window but just didn't make the deadline. It includes:

   - Additional documentation in the riscv,cpu-intc device tree binding
     that resulted from some feedback I missed in the original patch
     set.

   - A build fix that provides the definition of tlb_flush() before
     including tlb.h, which fixes a RISC-V build regression introduced
     during this merge window.

   - A cosmetic cleanup to sys_riscv_flush_icache()"

* tag 'riscv-for-linus-4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
  RISC-V: Use a less ugly workaround for unused variable warnings
  riscv: tlb: Provide definition of tlb_flush() before including tlb.h
  dt-bindings: riscv,cpu-intc: Cleanups from a missed review

Merge tag 'drm-intel-fixes-2018-08-29' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

- fix for GLK and CNL watermark workaround
- fix for display affecting NUCs with LSPCON
- freeing an allocated write_buf on hdcp
- audio hook when display is disabled
- vma stop holding ppgtt reference
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180829234512.GA32468@intel.com

Fixes for 4.19:
- SR-IOV fixes
- Kasan and page fault fix on device removal
- S3 stability fix for CZ/ST
- VCE regression fixes for CIK parts
- Avoid holding the mn_lock when allocating memory
- DC memory leak fix
- BO eviction fix
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180829202555.2653-1-alexander.deucher@amd.com

Merge branch 'mediatek-drm-fixes-4.19' of https://github.com/ckhu-mediatek/linux.git-tags into drm-fixes

"Here are some fixes for mediatek drm driver."

Mostly fixes around the RDMA and Overlay
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1535346194.27648.5.camel@mtksdaap41

The newly added code that emits ksymtab entries as pairs of 32-bit
relative references interacts poorly with the way powerpc lays out its
address space: when a module exports a per-CPU variable, the primary
module region covering the ksymtab entry -and thus the 32-bit relative
reference- is too far away from the actual per-CPU variable's base
address (to which the per-CPU offsets are applied to obtain the
respective address of each CPU's copy), resulting in corruption when the
module loader attempts to resolve symbol references of modules that are
loaded on top and link to the exported per-CPU symbol.

So let's disable this feature on powerpc.  Even though it implements
CONFIG_RELOCATABLE, it does not implement CONFIG_RANDOMIZE_BASE and so
KASLR kernels (which are the main target of the feature) do not exist on
powerpc anyway.
Reported-by: Andreas Schwab <schwab@linux-m68k.org>
Suggested-by: Nicholas Piggin <nicholas.piggin@gmail.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'hwmon-for-linus-v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - Fix potential Spectre v1 in nct6775

 - Add error checking to adt7475 driver

 - Fix reading shunt resistor value in ina2xx driver

* tag 'hwmon-for-linus-v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (nct6775) Fix potential Spectre v1
  hwmon: (adt7475) Make adt7475_read_word() return errors
  hwmon: (adt7475) Potential error pointer dereferences
  hwmon: (ina2xx) fix sysfs shunt resistor read access

Pull misc fs fixes from Jan Kara:

 - make UDF to properly mount media created by Win7

 - make isofs to properly refuse devices with large physical block size

 - fix a Spectre gadget in quotactl(2)

 - fix a warning in fsnotify code hit by syzkaller

* tag 'for_v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: Fix mounting of Win7 created UDF filesystems
  udf: Remove dead code from udf_find_fileset()
  fs/quota: Fix spectre gadget in do_quotactl
  fs/quota: Replace XQM_MAXQUOTAS usage with MAXQUOTAS
  isofs: reject hardware sector size > 2048 bytes
  fsnotify: fix false positive warning on inode delete

Pull nios2 fix from Ley Foon Tan:
 "remove duplicate DEBUG_STACK_USAGE symbol defintions"

* tag 'nios2-v4.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2:
  nios2: kconfig: remove duplicate DEBUG_STACK_USAGE symbol defintions

If the display has been disabled by modparam, we still want to connect
together the HW bits and bobs with the associated drivers so that we can
continue to manage their runtime power gating.

Fixes: 10810944 ("drm/i915: Check num_pipes before initializing audio component")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Elaine Wang <elaine.wang@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180817100241.4628-1-chris@chris-wilson.co.uk
(cherry picked from commit 35a5fd9e)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

100 ms is not enough time for the LSPCON adapter on Intel NUC devices to
settle. This causes dropped display modes at boot or screen reconfiguration.
Empirical testing can reproduce the error up to a timeout of 190 ms. Basic
boot and stress testing at 200 ms has not (yet) failed.

Increase timeout to 400 ms to get some margin of error.

Changes from v1:
The initial suggestion of 1000 ms was lowered due to concerns about delaying
valid timeout cases.
Update patch metadata.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107503
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1570392
Fixes: 357c0ae9 ("drm/i915/lspcon: Wait for expected LSPCON mode to settle")
Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: <stable@vger.kernel.org> # v4.11+
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Fredrik Schön <fredrik.schon@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180817200728.8154-1-fredrik.schon@gmail.com
(cherry picked from commit 59f1c8ab)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

The context owns both the ppgtt and the vma within it, and our activity
tracking on the context ensures that we do not release active ppgtt. As
the context fulfils our obligations for active memory tracking, we can
relinquish the reference from the vma.

This fixes a silly transient refleak from closed vma being kept alive
until the entire system was idle, keeping all vm alive as well.
Reported-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Testcase: igt/gem_ctx_create/files
Fixes: 3365e226 ("drm/i915: Lazily unbind vma on close")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Tested-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180816073448.19396-1-chris@chris-wilson.co.uk
(cherry picked from commit a4417b7b)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Pull crypto fixes from Herbert Xu:

 - Check for the right CPU feature bit in sm4-ce on arm64.

 - Fix scatterwalk WARN_ON in aes-gcm-ce on arm64.

 - Fix unaligned fault in aesni on x86.

 - Fix potential NULL pointer dereference on exit in chtls.

 - Fix DMA mapping direction for RSA in caam.

 - Fix error path return value for xts setkey in caam.

 - Fix address endianness when DMA unmapping in caam.

 - Fix sleep-in-atomic in vmx.

 - Fix command corruption when queue is full in cavium/nitrox.

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: cavium/nitrox - fix for command corruption in queue full case with backlog submissions.
  crypto: vmx - Fix sleep-in-atomic bugs
  crypto: arm64/aes-gcm-ce - fix scatterwalk API violation
  crypto: aesni - Use unaligned loads from gcm_context_data
  crypto: chtls - fix null dereference chtls_free_uld()
  crypto: arm64/sm4-ce - check for the right CPU feature bit
  crypto: caam - fix DMA mapping direction for RSA forms 2 & 3
  crypto: caam/qi - fix error path in xts setkey
  crypto: caam/jr - fix descriptor DMA unmapping

RZ/G2M (R8A774A1) watchdog implementation is compatible with R-Car
Gen3, therefore add relevant documentation.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>