Passing the wrong type feels icky, everywhere else we use the pipe as
the first parameter. Spotted while discussing patches with Thomas
Zimmermann.
v2: Make xen compile correctly
Acked-By: Thomas Zimmermann <tzimmermann@suse.de> (v1)
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Noralf Trønnes <noralf@tronnes.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Emil Velikov <emil.velikov@collabora.com>
Cc: virtualization@lists.linux-foundation.org
Cc: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191023101256.20509-1-daniel.vetter@ffwll.ch
The attachment list is now protected by the dma_resv object.
Stop holding the dma_buf->lock while calling ->attach/->detach,
this allows for concurrent attach/detach operations.
v2: cleanup commit message and locking in _debug_show()
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/336790
This patch is a stripped down version of the locking changes
necessary to support dynamic DMA-buf handling.
It adds a dynamic flag for both importers as well as exporters
so that drivers can choose if they want the reservation object
locked or unlocked during mapping of attachments.
For compatibility between drivers we cache the DMA-buf mapping
during attaching an importer as soon as exporter/importer
disagree on the dynamic handling.
Issues and solutions we considered:
- We can't change all existing drivers, and existing improters have
strong opinions about which locks they're holding while calling
dma_buf_attachment_map/unmap. Exporters also have strong opinions about
which locks they can acquire in their ->map/unmap callbacks, levaing no
room for change. The solution to avoid this was to move the
actual map/unmap out from this call, into the attach/detach callbacks,
and cache the mapping. This works because drivers don't call
attach/detach from deep within their code callchains (like deep in
memory management code called from cs/execbuf ioctl), but directly from
the fd2handle implementation.
- The caching has some troubles on some soc drivers, which set other modes
than DMA_BIDIRECTIONAL. We can't have 2 incompatible mappings, and we
can't re-create the mapping at _map time due to the above locking fun.
We very carefuly step around that by only caching at attach time if the
dynamic mode between importer/expoert mismatches.
- There's been quite some discussion on dma-buf mappings which need active
cache management, which would all break down when caching, plus we don't
have explicit flush operations on the attachment side. The solution to
this was to shrug and keep the current discrepancy between what the
dma-buf docs claim and what implementations do, with the hope that the
begin/end_cpu_access hooks are good enough and that all necessary
flushing to keep device mappings consistent will be done there.
v2: cleanup set_name merge, improve kerneldoc
v3: update commit message, kerneldoc and cleanup _debug_show()
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/336788/
During the discussion of patches that enhance the drm_dp_link helpers it
was concluded that these helpers aren't very useful to begin with. After
all other drivers have been converted not to use these helpers anymore,
move these helpers into the last remaining user: Tegra DRM.
If at some point these helpers are deemed more widely useful, they can
be moved out into the DRM DP helpers again.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191021143437.1477719-14-thierry.reding@gmail.com
During the discussion of patches that enhance the drm_dp_link helpers it
was concluded that these helpers aren't very useful to begin with. Start
pushing the equivalent code into individual drivers to ultimately remove
them.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191021143437.1477719-13-thierry.reding@gmail.com
During the discussion of patches that enhance the drm_dp_link helpers it
was concluded that these helpers aren't very useful to begin with. Start
pushing the equivalent code into individual drivers to ultimately remove
them.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191021143437.1477719-12-thierry.reding@gmail.com
During the discussion of patches that enhance the drm_dp_link helpers it
was concluded that these helpers aren't very useful to begin with. Start
pushing the equivalent code into individual drivers to ultimately remove
them.
v3: make link rate unsigned int to avoid overflow
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191021143437.1477719-10-thierry.reding@gmail.com
During the discussion of patches that enhance the drm_dp_link helpers it
was concluded that these helpers aren't very useful to begin with. Start
pushing the equivalent code into individual drivers to ultimately remove
them.
v4: use bulk DPCD writes if possible (Daniel Vetter)
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191022145211.2258525-1-thierry.reding@gmail.com
If the transmitter supports pre-emphasis post cursor2 the sink will
request adjustments in a similar way to how it requests adjustments to
the voltage swing and pre-emphasis settings.
Add a helper to extract these adjustments on a per-lane basis from the
DPCD link status.
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191021143437.1477719-8-thierry.reding@gmail.com
Use microsecond sleeps for the clock recovery and channel equalization
delays during link training. The duration of these delays can be from
100 us up to 16 ms. It is rude to busy-loop for that amount of time.
While at it, also convert to standard coding style by putting the
opening braces in a function definition on a new line. Also switch to
using an unsigned int for the AUX read interval to match the data type
of the parameters to usleep_range().
v2: use correct multiplier for training delays (Philipp Zabel)
v3: clarify data type change in commit message
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191021143437.1477719-7-thierry.reding@gmail.com
It's idiomatic to check the return value of a function call immediately
after the function call, without any blank lines in between, to make it
more obvious that the two lines belong together.
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191021143437.1477719-3-thierry.reding@gmail.com
Parroting Daniel's backmerge justification from
2e79e22e092acd55da0b2db066e4826d7d152c41:
Thierry needs fd70c7755b ("drm/bridge: tc358767: fix max_tu_symbol
value") to be able to merge his dp_link patch series.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
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Merge v5.4-rc4 into drm-next
Thierry needs fd70c7755b ("drm/bridge: tc358767: fix max_tu_symbol
value") to be able to merge his dp_link patch series.
Some adjacent changes conflicts, plus some clashes in i915 due to
cherry-picking and git trying to be helpful and leaving both versions
in.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Should help new people pick suitable tasks.
Cc: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Sean Paul <sean@poorly.run>
Reviewed-by: Sean Paul <sean@poorly.run>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191022152530.22038-2-daniel.vetter@ffwll.ch
Done with
commit aef9f33b76
Author: Imre Deak <imre.deak@intel.com>
Date: Tue Oct 23 17:43:10 2018 +0300
drm/i915: Ensure proper HDA suspend/resume ordering with a device link
Cc: Imre Deak <imre.deak@intel.com>
Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191022152530.22038-1-daniel.vetter@ffwll.ch
This is not something we'll fix, because failing to clean up stuff (or
doing it in the wrong order) is a driver bug. The offending FIXME goes
all the way back to the original modeset merge.
We've added a WARN_ON in
commit 2b677e8c08
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Mon Dec 10 21:16:05 2012 +0100
drm: reference framebuffers which are on the idr
including a comment blaming drivers on this. Right thing to do is most
likely drm_atomic_helper_shutdown plus making sure that
drm_mode_config_cleanup is not called too early (i.e. not in driver
unload, but only in the final drm_device release callback).
Cc: Mihail Atanassov <Mihail.Atanassov@arm.com>
Reported-by: Mihail Atanassov <Mihail.Atanassov@arm.com>
Reviewed-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191022163717.1064-1-daniel.vetter@ffwll.ch
Add a function to fill the AVI infoframe bar information from
the standard tv margin properties.
Cc: Eric Anholt <eric@anholt.net>
Cc: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191008164814.5894-1-ville.syrjala@linux.intel.com
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
I'll be the main point of contact.
Cc: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Acked-by: Sean Paul <sean@poorly.run>
Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191021150123.19570-1-mihail.atanassov@arm.com
GCC complains about dubious bitwise OR operand:
drivers/gpu/drm/drm_mipi_dbi.c:1024:49: warning: dubious: x | !y
CC [M] drivers/gpu/drm/drm_mipi_dbi.o
As long as buffer is consist of byte (u8) values, we may use
simple right shift and satisfy compiler. It also reduces amount of
operations needed.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Tested-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191017114912.61522-1-andriy.shevchenko@linux.intel.com
Not sure what this hook is supposed to do. vmf->vma->vm_private_data
should never be NULL, so the extra check in qxl_ttm_fault should have no
effect.
Drop it.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20191017132638.9693-2-kraxel@redhat.com
Remove unnecessary variable `ret` in drm_dp_atomic_find_vcpi_slots()
only used to hold the function return value and have the function
return the value directly.
Issue found by coccinelle:
@@
local idexpression ret;
expression e;
@@
-ret =
+return
e;
-return ret;
Signed-off-by: Wambui Karuga <wambui.karugax@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191019071840.16877-1-wambui@karuga.xyz
"clock" may be copied to "best_clock". Initializing best_clock
is not sufficient. The fix initializes clock as well to avoid
memory disclosures and informaiton leaks.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191018044150.1899-1-kjlu@umn.edu
`best_clock` is an object that may be sent out. Object `clock`
contains uninitialized bytes that are copied to `best_clock`,
which leads to memory disclosure and information leak.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191018042953.31099-1-kjlu@umn.edu
- R-Car DU fixes for H2 ES2.0 and later revisions
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Merge tag 'du-next-20191016' of git://linuxtv.org/pinchartl/media into drm-next
- R-Car DU support for R8A774B1 SoC
- R-Car DU fixes for H2 ES2.0 and later revisions
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191015215116.GF19403@pendragon.ideasonboard.com
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Merge tag 'mediatek-drm-next-5.5' of https://github.com/ckhu-mediatek/linux.git-tags into drm-next
Mediatek DRM next for Linux 5.5
This include mipi_tx, dsi, and partial crtc for MT8183 SoC.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1571103548.4416.6.camel@mtksdaap41
UAPI Changes:
- Introduce a versioning of the i915-perf uapi (Lionel)
- Add support for perf configuration queries (Lionel)
Allow listing perf configurations with IOCTL in addition
to sysfs. This is useful in container usecases.
- Allow dynamic reconfiguration of the OA stream (Chris)
Allows the OA stream to be reconfigured between
batch buffers, giving greater flexibility in sampling.
- Allow holding preemption on filtered perf ctx
Allow CAP_ADMIN to block pre-emption of a context
to query performance counters without disturbances.
Mesa changes: https://gitlab.freedesktop.org/mesa/mesa/merge_requests/932
Cross-subsystem Changes:
- drm-next backmerge for HDR DP changes
https://lists.freedesktop.org/archives/dri-devel/2019-September/236453.html
Driver Changes:
- Add DC3CO sleep state for Tigerlake (Anshuman)
- Tigerlake BCS engine support engine relative MMIO (Daniele)
- Simplify the Tigerlake LRC register list for !RCS (Daniele)
- Read SAGV block time from PCODE on Tigerlake (James)
- Add 12 missing Tigerlake workarounds (Mika)
- Enable DDI/Port G for Tigerlake (Khaled)
- Avoid hang in tsg,vfe units by keeping l3 clocks ICL+(Mika)
- Fix Bugzilla #111966: Favor last VBT child device (Ville)
- Fix blue/black screen on boot due to broken gamma (Swati)
- Add support of BT.2020 Colorimetry to DP MSA (Gwan-gyeong)
- Attach colorspace property to DP connector (Gwan-gyeong)
- Attach HDR metadata property to DP connector (Gwan-gyeong)
- Base intel_memory_region support prep for local memory (Matt A)
- Introduce Jasper Lake PCH (Matt R)
- Support multiple GPUs in PMU (Tvrtko)
- Fix MST oops due to MSA changes (Ville)
- Refuse modes with hdisplay==4096 on pre-HSW DP (Ville)
- Correct the PCH type in irq postinstall for JSP (Vivek)
- Save Master transcoder in slave's crtc_state for Transcoder Port Sync (Manasi)
- Enable TRANSCODER PORT SYNC for tiled displays across separate ports (Manasi)
- HW state readout for transcoder port sync config (Manasi)
- Enable master-slaves in trans port sync (Manasi)
- In port sync mode disable slaves first then master (Manasi)
- Fix port checks for MST support on gen >= 11 (Lucas)
- Flush submission tasklet before waiting/retiring (Chris)
- Flush tasklet submission before sleeping on i915_request_wait (Chris)
- Object pin reference counting fixes (Chris, Matt A)
- Clear semaphore immediately upon ELSP promotion (Chris)
- Child device size remains unchanged through VBT 229 (Matt R)
- Restore dropped 'interruptible' flag on retiring requests (Chris)
- Treat a busy timeline as 'active' while waiting (Chris)
- Clean up struct_mutex from perf (Chris)
- Update locking around execlists->active (Chris)
- Mark up expected execlist state during reset (Chris)
- Remove cursor use of properties for coordinates (Maarten)
- Only mark incomplete requests as -EIO on cancelling (Chris)
- Add an rcu_barrier option to i915_drop_caches (Chris)
- Replace perf global wakeref tracking with engine-pm (Chris)
- Prevent merging requests with conflicting flags (Chris)
- Allow for CS OA configs to be created lazily (Lionel)
- Implement active wait for noa configurations (Lionel)
- Execute OA configuration from command stream (Lionel)
- Prefer using the pinned_ctx for emitting delays on config (Chris)
- Port C's hotplug interrupt is associated with TC1 bits (Vivek, Matt R)
- Extend program of VSC Header and DB for Colorimetry Format (Gwan-gyeong)
- Fine-tune timeslicing of contexts (Chris)
- Do initial mocs configuration directly (Chris)
- Fix uninitialized variable on PMU error path (Tvrtko)
- Don't disable interrupts independently of the locking (Sebastian)
- Eliminate struct_mutext from GVT (Chris)
- Move perf types to their own header (Lionel)
- Drop list of perf streams (always size 1) (Lionel)
- Store the perf associated engine of a stream (Lionel)
- Make array hw_engine_mask static (Colin)
- Prefer shortest path to RPM/perf/GT instead of dev_priv (Chris, Tvrtko)
- Virtual request submission fixes (Chris)
- Selftest/CI improvements (Chris)
- Fix Kconfig indentation (Krzysztof)
- Give engine->kernel_context distinct timeline lock classes (Chris)
- Fix null pointer deref on selftest error path (Colin)
- Select DPLL's via mask (Matt R)
- Introduce and use intel_atomic_crtc_state_for_each_plane_state (Maarten)
- Use intel_plane_state in prepare and cleanup plane_fb (Maarten)
- Remove begin/finish_crtc_commit (Maarten)
- Move SAGV block time to dev_priv (James)
- Avoid polluting the i915_oa_config with error pointers (Chris)
- Squelch display kerneldoc warnings (Chris)
- Assert tasklet is locked for process_csb() (Chris)
- Switch to using DP_MSA_MISC_* defines (Ville)
- Stop using drm_atomic_helper_check_planes() (Ville)
- Make .modeset_calc_cdclk() mandatory (Ville)
- Use drm_rect_translate_to()/drm_rect_init() (Ville)
- Refactor timestamping constants update (Ville)
- Switch intel_legacy_cursor_update() to intel_ types (Ville)
- Prepare the connector/encoder mask readout for hw vs. uapi state split (Ville)
- Prepare the mode readout for hw vs. uapi state split (Ville)
- Move swizzle_bit under i915_ggtt (Chris)
- Improve microcontrollers documentation (Daniele)
- Move the cursor rotation handling into intel_cursor_check_surface() (Ville)
- Cleanups to pipe code (Ville)
- Shrink eDRAM ways/sets arrays for code size (Ville)
- Cleanups to HDCP2 timeout code (Ville)
- Restore full symmetry in i915_driver_modeset_probe/remove (Janusz)
- Simplify setting of ddi_io_power_domain (Lucas)
- Add pipe id/name to pipe mismatch logs (Lucas)
- Prettify MST debug message (Lucas)
- Extract GT ring management to separate files (Andi)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191021180337.GA24338@jlahtine-desk.ger.corp.intel.com
Although the ring management is much smaller compared to the other GT
power management functions, continue the theme of extracting it out of
the huge intel_pm.c for maintenance.
Based on a patch by Chris Wilson.
Signed-off-by: Andi Shyti <andi.shyti@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191020184139.9145-1-chris@chris-wilson.co.uk
- fix a bashism of setlocalversion
- do not use the too new --sort option of tar
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Merge tag 'kbuild-fixes-v5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild fixes from Masahiro Yamada:
- fix a bashism of setlocalversion
- do not use the too new --sort option of tar
* tag 'kbuild-fixes-v5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kheaders: substituting --sort in archive creation
scripts: setlocalversion: fix a bashism
kbuild: update comment about KBUILD_ALLDIRS
Pull x86 fixes from Thomas Gleixner:
"A small set of x86 fixes:
- Prevent a NULL pointer dereference in the X2APIC code in case of a
CPU hotplug failure.
- Prevent boot failures on HP superdome machines by invalidating the
level2 kernel pagetable entries outside of the kernel area as
invalid so BIOS reserved space won't be touched unintentionally.
Also ensure that memory holes are rounded up to the next PMD
boundary correctly.
- Enable X2APIC support on Hyper-V to prevent boot failures.
- Set the paravirt name when running on Hyper-V for consistency
- Move a function under the appropriate ifdef guard to prevent build
warnings"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot/acpi: Move get_cmdline_acpi_rsdp() under #ifdef guard
x86/hyperv: Set pv_info.name to "Hyper-V"
x86/apic/x2apic: Fix a NULL pointer deref when handling a dying cpu
x86/hyperv: Make vapic support x2apic mode
x86/boot/64: Round memory hole size up to next PMD page
x86/boot/64: Make level2_kernel_pgt pages invalid outside kernel area
Pull irq fixes from Thomas Gleixner:
"A small set of irq chip driver fixes and updates:
- Update the SIFIVE PLIC interrupt driver to use the fasteoi handler
to address the shortcomings of the existing flow handling which was
prone to lose interrupts
- Use the proper limit for GIC interrupt line numbers
- Add retrigger support for the recently merged Anapurna Labs Fabric
interrupt controller to make it complete
- Enable the ATMEL AIC5 interrupt controller driver on the new
SAM9X60 SoC"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/sifive-plic: Switch to fasteoi flow
irqchip/gic-v3: Fix GIC_LINE_NR accessor
irqchip/atmel-aic5: Add support for sam9x60 irqchip
irqchip/al-fic: Add support for irq retrigger
Pull hrtimer fixlet from Thomas Gleixner:
"A single commit annotating the lockcless access to timer->base with
READ_ONCE() and adding the WRITE_ONCE() counterparts for completeness"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
hrtimer: Annotate lockless access to timer->base
Wambui Karuga