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Commit b9d79e4ca4ff ("fbmem: Mark proc_fb_seq_ops as __maybe_unused")
places the '__maybe_unused' in an entirely incorrect location between
the "struct" keyword and the structure name.
It's a wonder that gcc accepts that silently, but clang quite reasonably
warns about it:
drivers/video/fbdev/core/fbmem.c:736:21: warning: attribute declaration must precede definition [-Wignored-attributes]
static const struct __maybe_unused seq_operations proc_fb_seq_ops = {
^
Fix it.
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull drm fixes from Dave Airlie:
"Bit later than usual, I queued them all up on Friday then promptly
forgot to write the pull request email. This is mainly amdgpu fixes,
with some radeon/msm/fbdev and one i915 gvt fix thrown in.
amdgpu:
- MPO hang workaround
- Fix for concurrent VM flushes on vega/navi
- dcefclk is not adjustable on navi1x and newer
- MST HPD debugfs fix
- Suspend/resumes fixes
- Register VGA clients late in case driver fails to load
- Fix GEM leak in user framebuffer create
- Add support for polaris12 with 32 bit memory interface
- Fix duplicate cursor issue when using overlay
- Fix corruption with tiled surfaces on VCN3
- Add BO size and stride check to fix BO size verification
radeon:
- Fix off-by-one in power state parsing
- Fix possible memory leak in power state parsing
msm:
- NULL ptr dereference fix
fbdev:
- procfs disabled warning fix
i915:
- gvt: Fix a possible division by zero in vgpu display rate
calculation"
* tag 'drm-next-2021-05-10' of git://anongit.freedesktop.org/drm/drm:
drm/amdgpu: Use device specific BO size & stride check.
drm/amdgpu: Init GFX10_ADDR_CONFIG for VCN v3 in DPG mode.
drm/amd/pm: initialize variable
drm/radeon: Avoid power table parsing memory leaks
drm/radeon: Fix off-by-one power_state index heap overwrite
drm/amd/display: Fix two cursor duplication when using overlay
drm/amdgpu: add new MC firmware for Polaris12 32bit ASIC
fbmem: Mark proc_fb_seq_ops as __maybe_unused
drm/msm/dpu: Delete bonkers code
drm/i915/gvt: Prevent divided by zero when calculating refresh rate
amdgpu: fix GEM obj leak in amdgpu_display_user_framebuffer_create
drm/amdgpu: Register VGA clients after init can no longer fail
drm/amdgpu: Handling of amdgpu_device_resume return value for graceful teardown
drm/amdgpu: fix r initial values
drm/amd/display: fix wrong statement in mst hpd debugfs
amdgpu/pm: set pp_dpm_dcefclk to readonly on NAVI10 and newer gpus
amdgpu/pm: Prevent force of DCEFCLK on NAVI10 and SIENNA_CICHLID
drm/amdgpu: fix concurrent VM flushes on Vega/Navi v2
drm/amd/display: Reject non-zero src_y and src_x for video planes
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git://anongit.freedesktop.org/drm/drm-misc into drm-next
Two patches, one to fix a null pointer dereference in msm, and one to
fix an unused warning for in fbdev when PROCFS is disabled.
Signed-off-by: Dave Airlie <airlied@redhat.com>
# gpg: Signature made Thu 06 May 2021 22:26:35 AEST
# gpg: using ? key E3EF0D6F671851C5
# gpg: Can't check signature: unknown pubkey algorithm
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210506122723.oqadel7oacazywij@gilmour
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With CONFIG_PROC_FS=n and -Werror, 0-day reports:
drivers/video/fbdev/core/fbmem.c:736:36: error:
'proc_fb_seq_ops' defined but not used
Mark it as __maybe_unused.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210504142910.2084722-1-linux@roeck-us.net
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Merge yet more updates from Andrew Morton:
"This is everything else from -mm for this merge window.
90 patches.
Subsystems affected by this patch series: mm (cleanups and slub),
alpha, procfs, sysctl, misc, core-kernel, bitmap, lib, compat,
checkpatch, epoll, isofs, nilfs2, hpfs, exit, fork, kexec, gcov,
panic, delayacct, gdb, resource, selftests, async, initramfs, ipc,
drivers/char, and spelling"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (90 commits)
mm: fix typos in comments
mm: fix typos in comments
treewide: remove editor modelines and cruft
ipc/sem.c: spelling fix
fs: fat: fix spelling typo of values
kernel/sys.c: fix typo
kernel/up.c: fix typo
kernel/user_namespace.c: fix typos
kernel/umh.c: fix some spelling mistakes
include/linux/pgtable.h: few spelling fixes
mm/slab.c: fix spelling mistake "disired" -> "desired"
scripts/spelling.txt: add "overflw"
scripts/spelling.txt: Add "diabled" typo
scripts/spelling.txt: add "overlfow"
arm: print alloc free paths for address in registers
mm/vmalloc: remove vwrite()
mm: remove xlate_dev_kmem_ptr()
drivers/char: remove /dev/kmem for good
mm: fix some typos and code style problems
ipc/sem.c: mundane typo fixes
...
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The section "19) Editor modelines and other cruft" in
Documentation/process/coding-style.rst clearly says, "Do not include any
of these in source files."
I recently receive a patch to explicitly add a new one.
Let's do treewide cleanups, otherwise some people follow the existing code
and attempt to upstream their favoriate editor setups.
It is even nicer if scripts/checkpatch.pl can check it.
If we like to impose coding style in an editor-independent manner, I think
editorconfig (patch [1]) is a saner solution.
[1] https://lore.kernel.org/lkml/20200703073143.423557-1-danny@kdrag0n.dev/
Link: https://lkml.kernel.org/r/20210324054457.1477489-1-masahiroy@kernel.org
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org> [auxdisplay]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull more drm updates from Dave Airlie:
"Looks like I missed a tegra feature request for next, but should still
be fine since it's pretty self contained.
Apart from that got a set of i915 and amdgpu fixes as per usual along
with a few misc fixes.
tegra:
- Tegra186 hardware cursor support
- better capability reporting for different SoC
- better framebuffer modifier support
- host1x fixes
ttm:
- fix unswappable BO handling
efifb:
- check for PCI before using it
amdgpu:
- Fixes for Aldebaran
- Display LTTPR fixes
- eDP fixes
- Fixes for Vangogh
- RAS fixes
- ASPM support
- Renoir SMU fixes
- Modifier fixes
- Misc code cleanups
- Freesync fixes
i915:
- Several fixes to GLK handling in recent display refactoring
- Rare watchdog timer race fix
- Cppcheck redundant condition fix
- Overlay error code propagation fix
- Documentation fix
- gvt: Remove one unused function warning
- gvt: Fix intel_gvt_init_device() return type
- gvt: Remove one duplicated register accessible check"
* tag 'drm-next-2021-04-30' of git://anongit.freedesktop.org/drm/drm: (111 commits)
efifb: Check efifb_pci_dev before using it
drm/i915: Fix docbook descriptions for i915_gem_shrinker
drm/i915: fix an error code in intel_overlay_do_put_image()
drm/i915/display/psr: Fix cppcheck warnings
drm/i915: Disable LTTPR detection on GLK once again
drm/i915: Restore lost glk ccs w/a
drm/i915: Restore lost glk FBC 16bpp w/a
drm/i915: Take request reference before arming the watchdog timer
drm/ttm: fix error handling if no BO can be swapped out v4
drm/i915/gvt: Remove duplicated register accessible check
drm/amdgpu/gmc9: remove dummy read workaround for newer chips
drm/amdgpu: Add mem sync flag for IB allocated by SA
drm/amdgpu: Fix SDMA RAS error reporting on Aldebaran
drm/amdgpu: Reset RAS error count and status regs
Revert "drm/amdgpu: workaround the TMR MC address issue (v2)"
drm/amd/display: 3.2.132
drm/amd/display: [FW Promotion] Release 0.0.62
drm/amd/display: add helper for enabling mst stream features
drm/amd/display: Report Proper Quantization Range in AVI Infoframe
drm/amd/display: Fix call to pass bpp in 16ths of a bit
...
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git://anongit.freedesktop.org/drm/drm-misc into drm-next
Two patches in drm-misc-next-fixes this week, one to fix the error
handling in TTM when a BO can't be swapped out and one to prevent a
wrong dereference in efifb.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210429090308.k3fuqvenf6vupfmg@gilmour
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On some platforms like Hyper-V and RPi4 with UEFI firmware, efifb is not
a PCI device.
So make sure efifb_pci_dev is found before using it.
Fixes: a6c0fd3d5a8b ("efifb: Ensure graphics device for efifb stays at PCI D0")
BugLink: https://bugs.launchpad.net/bugs/1922403
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210413170508.968148-1-kai.heng.feng@canonical.com
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight updates from Lee Jones:
"New Device Support:
- Add support for PMI8994 to Qualcom WLED
- Add support for KTD259 to Kinetic KTD253
Fix-ups:
- Device Tree related fix-ups; kinetic,ktd253
- Use proper sequence during sync_toggle; qcom-wled
- Fix Wmisleading-indentation warnings; jornada720_bl
Bug Fixes:
- Fix sync toggle on WLED4; qcom-wled
- Fix FSC update on WLED5; qcom-wled"
* tag 'backlight-next-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight: journada720: Fix Wmisleading-indentation warning
backlight: qcom-wled: Correct the sync_toggle sequence
backlight: qcom-wled: Fix FSC update issue for WLED5
dt-bindings: backlight: Add Kinetic KTD259 bindings
backlight: ktd253: Support KTD259
backlight: qcom-wled: Use sink_addr for sync toggle
dt-bindings: backlight: qcom-wled: Add PMI8994 compatible
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With gcc-11, we get a warning about code that looks correct
but badly indented:
drivers/video/backlight/jornada720_bl.c: In function ‘jornada_bl_update_status’:
drivers/video/backlight/jornada720_bl.c:66:11: error: this ‘else’ clause does not guard... [-Werror=misleading-indentation]
66 | } else /* turn on backlight */
| ^~~~
Change the formatting according to our normal conventions.
Fixes: 13a7b5dc0d17 ("backlight: Adds HP Jornada 700 series backlight driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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As per the current implementation, after FSC (Full Scale Current)
and brightness update the sync bits are set-then-cleared.
But, the FSC and brightness sync takes place when the sync bits are
set (e.g. on a rising edge). So the hardware team recommends a
clear-then-set approach in order to guarantee such a transition
regardless of the previous register state.
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Currently, for WLED5, the FSC (Full scale current) setting is not
updated properly due to driver toggling the wrong register after
an FSC update.
On WLED5 we should only toggle the MOD_SYNC bit after a brightness
update. For an FSC update we need to toggle the SYNC bits instead.
Fix it by adopting the common wled3_sync_toggle() for WLED5 and
introducing new code to the brightness update path to compensate.
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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The KTD259 works just like KTD253 so add this compatible
to the driver.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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WLED3_SINK_REG_SYNC is, as the name implies, a sink register offset.
Therefore, use the sink address as base instead of the ctrl address.
This fixes the sync toggle on wled4, which can be observed by the fact
that adjusting brightness now works.
It has no effect on wled3 because sink and ctrl base addresses are the
same. This allows adjusting the brightness without having to disable
then reenable the module.
Signed-off-by: Obeida Shamoun <oshmoun100@googlemail.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Kiran Gunda <kgunda@codeaurora.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Pull drm updates from Dave Airlie:
"The usual lots of work all over the place.
i915 has gotten some Alderlake work and prelim DG1 code, along with a
major locking rework over the GEM code, and brings back the property
of timing out long running jobs using a watchdog. amdgpu has some
Alderbran support (new GPU), freesync HDMI support along with a lot
other fixes.
Outside of the drm, there is a new printf specifier added which should
have all the correct acks/sobs:
- printk fourcc modifier support added %p4cc
Summary:
core:
- drm_crtc_commit_wait
- atomic plane state helpers reworked for full state
- dma-buf heaps API rework
- edid: rework and improvements for displayid
dp-mst:
- better topology logging
bridge:
- Chipone ICN6211
- Lontium LT8912B
- anx7625 regulator support
panel:
- fix lt9611 4k panels handling
simple-kms:
- add plane state helpers
ttm:
- debugfs support
- removal of unused sysfs
- ignore signaled moved fences
- ioremap buffer according to mem caching
i915:
- Alderlake S enablement
- Conversion to dma_resv_locking
- Bring back watchdog timeout support
- legacy ioctl cleanups
- add GEM TDDO and RFC process
- DG1 LMEM preparation work
- intel_display.c refactoring
- Gen9/TGL PCH combination support
- eDP MSO Support
- multiple PSR instance support
- Link training debug updates
- Disable PSR2 support on JSL/EHL
- DDR5/LPDDR5 support for bw calcs
- LSPCON limited to gen9/10 platforms
- HSW/BDW async flip/VTd corruption workaround
- SAGV watermark fixes
- SNB hard hang on ring resume fix
- Limit imported dma-buf size
- move to use new tasklet API
- refactor KBL/TGL/ADL-S display/gt steppings
- refactoring legacy DP/HDMI, FB plane code out
amdgpu:
- uapi: add ioctl to query video capabilities
- Iniital AMD Freesync HDMI support
- Initial Adebaran support
- 10bpc dithering improvements
- DCN secure display support
- Drop legacy IO BAR requirements
- PCIE/S0ix/RAS/Prime/Reset fixes
- Display ASSR support
- SMU gfx busy queues for RV/PCO
- Initial LTTPR display work
amdkfd:
- MMU notifier fixes
- APU fixes
radeon:
- debugfs cleanps
- fw error handling ifix
- Flexible array cleanups
msm:
- big DSI phy/pll cleanup
- sc7280 initial support
- commong bandwidth scaling path
- shrinker locking contention fixes
- unpin/swap support for GEM objcets
ast:
- cursor plane handling reworked
tegra:
- don't register DP AUX channels before connectors
zynqmp:
- fix OOB struct padding memset
gma500:
- drop ttm and medfield support
exynos:
- request_irq cleanup function
mediatek:
- fine tune line time for EOTp
- MT8192 dpi support
- atomic crtc config updates
- don't support HDMI connector creation
mxsdb:
- imx8mm support
panfrost:
- MMU IRQ handling rework
qxl:
- locking fixes
- resource deallocation changes
sun4i:
- add alpha properties to UI/VI layers
vc4:
- RPi4 CEC support
vmwgfx:
- doc cleanups
arc:
- moved to drm/tiny"
* tag 'drm-next-2021-04-28' of git://anongit.freedesktop.org/drm/drm: (1390 commits)
drm/ttm: Don't count pages in SG BOs against pages_limit
drm/ttm: fix return value check
drm/bridge: lt8912b: fix incorrect handling of of_* return values
drm: bridge: fix LONTIUM use of mipi_dsi_() functions
drm: bridge: fix ANX7625 use of mipi_dsi_() functions
drm/amdgpu: page retire over debugfs mechanism
drm/radeon: Fix a missing check bug in radeon_dp_mst_detect()
drm/amd/display: Fix the Wunused-function warning
drm/radeon/r600: Fix variables that are not used after assignment
drm/amdgpu/smu7: fix CAC setting on TOPAZ
drm/amd/display: Update DCN302 SR Exit Latency
drm/amdgpu: enable ras eeprom on aldebaran
drm/amdgpu: RAS harvest on driver load
drm/amdgpu: add ras aldebaran ras eeprom driver
drm/amd/pm: increase time out value when sending msg to SMU
drm/amdgpu: add DMUB outbox event IRQ source define/complete/debug flag
drm/amd/pm: add the callback to get vbios bootup values for vangogh
drm/radeon: Fix size overflow
drm/amdgpu: Fix size overflow
drm/amdgpu: move mmhub ras_func init to ip specific file
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msm-next pull request has a baseline with stuff from -fixes, roll
forward first.
Some simple conflicts in amdgpu, ttm and one in i915 where git gets
confused and tries to add the same function twice.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Building with 'make W=1' shows a few harmless warnings:
drivers/video/fbdev/omap2/omapfb/omapfb-main.c: In function 'omapfb_calc_addr':
drivers/video/fbdev/omap2/omapfb/omapfb-main.c:823:56: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
823 | var->xoffset, var->yoffset, offset);
| ^
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c: In function 'omapfb_ioctl':
drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c:911:45: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
911 | DBG("ioctl failed: %d\n", r);
Avoid these by using no_printk(), which adds format string checking as
well.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210322105307.1291840-1-arnd@kernel.org
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Noralf needs some patches in 5.12-rc3, and we've been delaying the 5.12
merge due to the swap issue so it looks like a good time.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for 5.13:
UAPI Changes:
Cross-subsystem Changes:
Core Changes:
- %p4cc printk format modifier
- atomic: introduce drm_crtc_commit_wait, rework atomic plane state
helpers to take the drm_commit_state structure
- dma-buf: heaps rework to return a struct dma_buf
- simple-kms: Add plate state helpers
- ttm: debugfs support, removal of sysfs
Driver Changes:
- Convert drivers to shadow plane helpers
- arc: Move to drm/tiny
- ast: cursor plane reworks
- gma500: Remove TTM and medfield support
- mxsfb: imx8mm support
- panfrost: MMU IRQ handling rework
- qxl: rework to better handle resources deallocation, locking
- sun4i: Add alpha properties for UI and VI layers
- vc4: RPi4 CEC support
- vmwgfx: doc cleanup
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210303100600.dgnkadonzuvfnu22@gilmour
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There's no need to give the page an address_space. Leaving the
page->mapping as NULL will cause the VM to handle set_page_dirty()
the same way that it's handled now, and that was the only reason to
set the address_space in the first place.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210310185530.1053320-1-willy@infradead.org
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We are seeing root ports on some desktop boards support D3cold for
discrete graphics card. So when efifb is in use while graphics device
isn't bound to a driver, PCI and ACPI will put the graphics to D3cold
when runtime suspend kicks in, makes efifb stop working.
So ensure the graphics device won't be runtime suspended, to keep efifb
work all the time.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210129084327.986630-1-kai.heng.feng@canonical.com
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The driver uses in_atomic() to distinguish between mdelay() and msleep().
The usage of in_interrupt() in drivers is phased out and Linus clearly
requested that code which changes behaviour depending on context should
either be separated or the context be conveyed in an argument passed by the
caller, which usually knows the context.
I traced the usage of in_interrupt() back to its initial merge:
bfe694f833643 ("[ARM] Add ARM AMBA CLCD framebuffer driver.")
https://git.kernel.org/history/history/c/bfe694f833643
The driver has been removed and added back in the meantime.
I've been looking for the IRQ context as described in the comment and
couldn't find it. The functions calling clcdfb_sleep() also call
conditionally backlight_update_status() which acquires a mutex. If it is
okay to acquire a mutex then it is okay to use msleep() since both
functions must be used in preemptible context.
Replace clcdfb_sleep() with msleep().
Cc: Peter Collingbourne <pcc@google.com>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210208223810.388502-4-bigeasy@linutronix.de
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dsi_sync_vc() uses in_interrupt() to create a warning if the function is
used in non-preemptible context.
The usage of in_interrupt() in drivers is phased out and Linus clearly
requested that code which changes behaviour depending on context should
either be separated or the context be conveyed in an argument passed by the
caller, which usually knows the context.
The wait_for_completion() function (used in dsi_sync_vc_vp() and
dsi_sync_vc_l4() has already a check if it is invoked from proper
context.
Remove WARN_ON(in_interrupt()) from the driver.
Cc: linux-omap@vger.kernel.org
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210208223810.388502-3-bigeasy@linutronix.de
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alloc_req() uses in_interrupt() to detect if it is safe to use down().
The usage of in_interrupt() in drivers is phased out and Linus clearly
requested that code which changes behaviour depending on context should
either be separated or the context be conveyed in an argument passed by the
caller, which usually knows the context.
The semaphore is used as a counting semaphore, initialized with the
number of slots in the request pool minus IRQ_REQ_POOL_SIZE - which are
reserved for the in_interrupt() user to ensure that a request is always
available. The preemptible user will block on the semphore waiting for a
request to become available in case there are no requests available.
Replace in_interrupt() with a `can_sleep' argument to indicate if it is
safe to block on the sempahore.
Cc: linux-omap@vger.kernel.org
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210208223810.388502-2-bigeasy@linutronix.de
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The info message was showing the mapped address for the framebuffer. To avoid
security problems, all virtual addresses are converted to __ptrval__, so
the message has pointless information:
simple-framebuffer 3ea9b000.framebuffer: framebuffer at 0x3ea9b000, 0x12c000 bytes, mapped to 0x(____ptrval____)
Drop the extraneous bits to clean up the message:
simple-framebuffer 3ea9b000.framebuffer: framebuffer at 0x3ea9b000, 0x12c000 bytes
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201228183934.1117012-1-pbrobinson@gmail.com
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty and serial driver updates from Greg KH:
"Here is the big set of tty and serial driver updates for 5.13-rc1.
Actually busy this release, with a number of cleanups happening:
- much needed core tty cleanups by Jiri Slaby
- removal of unused and orphaned old-style serial drivers. If anyone
shows up with this hardware, it is trivial to restore these but we
really do not think they are in use anymore.
- fixes and cleanups from Johan Hovold on a number of termios setting
corner cases that loads of drivers got wrong as well as removing
unneeded code due to tty core changes from long ago that were never
propagated out to the drivers
- loads of platform-specific serial port driver updates and fixes
- coding style cleanups and other small fixes and updates all over
the tty/serial tree.
All of these have been in linux-next for a while now with no reported
issues"
* tag 'tty-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (186 commits)
serial: extend compile-test coverage
serial: stm32: add FIFO threshold configuration
dt-bindings: serial: 8250: update TX FIFO trigger level
dt-bindings: serial: stm32: override FIFO threshold properties
dt-bindings: serial: add RX and TX FIFO properties
serial: xilinx_uartps: drop low-latency workaround
serial: vt8500: drop low-latency workaround
serial: timbuart: drop low-latency workaround
serial: sunsu: drop low-latency workaround
serial: sifive: drop low-latency workaround
serial: txx9: drop low-latency workaround
serial: sa1100: drop low-latency workaround
serial: rp2: drop low-latency workaround
serial: rda: drop low-latency workaround
serial: owl: drop low-latency workaround
serial: msm_serial: drop low-latency workaround
serial: mpc52xx_uart: drop low-latency workaround
serial: meson: drop low-latency workaround
serial: mcf: drop low-latency workaround
serial: lpc32xx_hs: drop low-latency workaround
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We need the serial/tty fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit 973c096f6a85 ("vgacon: remove software scrollback support")
removed all uses of vga_init_done, so let's get rid of it entirely.
Signed-off-by: Stephen Kitt <steve@sk2.org>
Link: https://lore.kernel.org/r/20210215170837.1599706-1-steve@sk2.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Resolves a merge issue with:
drivers/tty/hvc/hvcs.c
and we want the tty/serial fixes from 5.12-rc3 in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Long time ago, I figured out what this number is good for and documented
that locally. But never submitted, so do it now.
Cc: dri-devel@lists.freedesktop.org
Cc: linux-fbdev@vger.kernel.org
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210302062214.29627-4-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH:
"Here is the big set of various smaller driver subsystem updates for
5.13-rc1.
Major bits in here are:
- habanalabs driver updates
- hwtracing driver updates
- interconnect driver updates
- mhi driver updates
- extcon driver updates
- fpga driver updates
- new binder features added
- nvmem driver updates
- phy driver updates
- soundwire driver updates
- smaller misc and char driver fixes and updates.
- bluetooth driver bugfix that maintainer wanted to go through this
tree.
All of these have been in linux-next with no reported issues"
* tag 'char-misc-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (330 commits)
bluetooth: eliminate the potential race condition when removing the HCI controller
coresight: etm-perf: Fix define build issue when built as module
phy: Revert "phy: ti: j721e-wiz: add missing of_node_put"
phy: ti: j721e-wiz: Add missing include linux/slab.h
phy: phy-twl4030-usb: Fix possible use-after-free in twl4030_usb_remove()
stm class: Use correct UUID APIs
intel_th: pci: Add Alder Lake-M support
intel_th: pci: Add Rocket Lake CPU support
intel_th: Consistency and off-by-one fix
intel_th: Constify attribute_group structs
intel_th: Constify all drvdata references
stm class: Remove an unused function
habanalabs/gaudi: Fix uninitialized return code rc when read size is zero
greybus: es2: fix kernel-doc warnings
mei: me: add Alder Lake P device id.
dw-xdata-pcie: Update outdated info and improve text format
dw-xdata-pcie: Fix documentation build warns
fbdev: zero-fill colormap in fbcmap.c
firmware: qcom-scm: Fix QCOM_SCM configuration
speakup: i18n: Switch to kmemdup_nul() in spk_msg_set()
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Use kzalloc() rather than kmalloc() for the dynamically allocated parts
of the colormap in fb_alloc_cmap_gfp, to prevent a leak of random kernel
data to userspace under certain circumstances.
Fixes a KMSAN-found infoleak bug reported by syzbot at:
https://syzkaller.appspot.com/bug?id=741578659feabd108ad9e06696f0c1f2e69c4b6e
Reported-by: syzbot+47fa9c9c648b765305b9@syzkaller.appspotmail.com
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210331220719.1499743-1-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull Hyper-V updates from Wei Liu:
- VMBus enhancement
- Free page reporting support for Hyper-V balloon driver
- Some patches for running Linux as Arm64 Hyper-V guest
- A few misc clean-up patches
* tag 'hyperv-next-signed-20210426' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (30 commits)
drivers: hv: Create a consistent pattern for checking Hyper-V hypercall status
x86/hyperv: Move hv_do_rep_hypercall to asm-generic
video: hyperv_fb: Add ratelimit on error message
Drivers: hv: vmbus: Increase wait time for VMbus unload
Drivers: hv: vmbus: Initialize unload_event statically
Drivers: hv: vmbus: Check for pending channel interrupts before taking a CPU offline
Drivers: hv: vmbus: Drivers: hv: vmbus: Introduce CHANNELMSG_MODIFYCHANNEL_RESPONSE
Drivers: hv: vmbus: Introduce and negotiate VMBus protocol version 5.3
Drivers: hv: vmbus: Use after free in __vmbus_open()
Drivers: hv: vmbus: remove unused function
Drivers: hv: vmbus: Remove unused linux/version.h header
x86/hyperv: remove unused linux/version.h header
x86/Hyper-V: Support for free page reporting
x86/hyperv: Fix unused variable 'hi' warning in hv_apic_read
x86/hyperv: Fix unused variable 'msr_val' warning in hv_qlock_wait
hv: hyperv.h: a few mundane typo fixes
drivers: hv: Fix EXPORT_SYMBOL and tab spaces issue
Drivers: hv: vmbus: Drop error message when 'No request id available'
asm-generic/hyperv: Add missing function prototypes per -W1 warnings
clocksource/drivers/hyper-v: Move handling of STIMER0 interrupts
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Due to a full ring buffer, the driver may be unable to send updates to
the Hyper-V host. But outputing the error message can make the problem
worse because console output is also typically written to the frame
buffer. As a result, in some circumstances the error message is output
continuously.
Break the cycle by rate limiting the error message. Also output
the error code for additional diagnosability.
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/1618933459-10585-1-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull Hyper-V fixes from Wei Liu:
"One fix from Lu Yunlong for a double free in hvfb_probe"
* tag 'hyperv-fixes-signed-20210402' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
video: hyperv_fb: Fix a double free in hvfb_probe
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Function hvfb_probe() calls hvfb_getmem(), expecting upon return that
info->apertures is either NULL or points to memory that should be freed
by framebuffer_release(). But hvfb_getmem() is freeing the memory and
leaving the pointer non-NULL, resulting in a double free if an error
occurs or later if hvfb_remove() is called.
Fix this by removing all kfree(info->apertures) calls in hvfb_getmem().
This will allow framebuffer_release() to free the memory, which follows
the pattern of other fbdev drivers.
Fixes: 3a6fb6c4255c ("video: hyperv: hyperv_fb: Use physical memory for fb on HyperV Gen 1 VMs.")
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210324103724.4189-1-lyl2019@mail.ustc.edu.cn
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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add null-check on function pointer before dereference on ops->cursor
Reported-by: syzbot+b67aaae8d3a927f68d20@syzkaller.appspotmail.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Du Cheng <ducheng2@gmail.com>
Link: https://lore.kernel.org/r/20210312081421.452405-1-ducheng2@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Include PPC_PMAC in the configs that use aty_ld_lcd() and
aty_st_lcd() implementations so that the PM code may work
correctly for PPC_PMAC.
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210226173008.18236-1-rdunlap@infradead.org
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
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The previously added stubs for aty_{ld,}st_lcd() make it
so that these functions are used regardless of the config
options that were guarding them, so remove the #ifdef/#endif
lines and make their declarations always visible.
This fixes build warnings that were reported by clang:
drivers/video/fbdev/aty/atyfb_base.c:180:6: warning: no previous prototype for function 'aty_st_lcd' [-Wmissing-prototypes]
void aty_st_lcd(int index, u32 val, const struct atyfb_par *par)
^
drivers/video/fbdev/aty/atyfb_base.c:180:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void aty_st_lcd(int index, u32 val, const struct atyfb_par *par)
drivers/video/fbdev/aty/atyfb_base.c:183:5: warning: no previous prototype for function 'aty_ld_lcd' [-Wmissing-prototypes]
u32 aty_ld_lcd(int index, const struct atyfb_par *par)
^
drivers/video/fbdev/aty/atyfb_base.c:183:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
u32 aty_ld_lcd(int index, const struct atyfb_par *par)
They should not be marked as static since they are used in
mach64_ct.c.
Fixes: bfa5782b9caa ("fbdev: atyfb: add stubs for aty_{ld,st}_lcd()")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210224215528.822-1-rdunlap@infradead.org
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
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Pull more drm updates from Dave Airlie:
"This is mostly fixes but I missed msm-next pull last week. It's been
in drm-next.
Otherwise it's a selection of i915, amdgpu and misc fixes, one TTM
memory leak, nothing really major stands out otherwise.
core:
- vblank fence timing improvements
dma-buf:
- improve error handling
ttm:
- memory leak fix
msm:
- a6xx speedbin support
- a508, a509, a512 support
- various a5xx fixes
- various dpu fixes
- qseed3lite support for sm8250
- dsi fix for msm8994
- mdp5 fix for framerate bug with cmd mode panels
- a6xx GMU OOB race fixes that were showing up in CI
- various addition and removal of semicolons
- gem submit fix for legacy userspace relocs path
amdgpu:
- clang warning fix
- S0ix platform shutdown/poweroff fix
- misc display fixes
i915:
- color format fix
- -Wuninitialised reenabled
- GVT ww locking, cmd parser fixes
atyfb:
- fix build
rockchip:
- AFBC modifier fix"
* tag 'drm-next-2021-02-26' of git://anongit.freedesktop.org/drm/drm: (60 commits)
drm/panel: kd35t133: allow using non-continuous dsi clock
drm/rockchip: Require the YTR modifier for AFBC
drm/ttm: Fix a memory leak
drm/drm_vblank: set the dma-fence timestamp during send_vblank_event
dma-fence: allow signaling drivers to set fence timestamp
dma-buf: heaps: Rework heap allocation hooks to return struct dma_buf instead of fd
dma-buf: system_heap: Make sure to return an error if we abort
drm/amd/display: Fix system hang after multiple hotplugs (v3)
drm/amdgpu: fix shutdown and poweroff process failed with s0ix
drm/i915: Nuke INTEL_OUTPUT_FORMAT_INVALID
drm/i915: Enable -Wuninitialized
drm/amd/display: Remove Assert from dcn10_get_dig_frontend
drm/amd/display: Add vupdate_no_lock interrupts for DCN2.1
Revert "drm/amd/display: reuse current context instead of recreating one"
drm/amd/pm/swsmu: Avoid using structure_size uninitialized in smu_cmn_init_soft_gpu_metrics
fbdev: atyfb: add stubs for aty_{ld,st}_lcd()
drm/i915/gvt: Introduce per object locking in GVT scheduler.
drm/i915/gvt: Purge dev_priv->gt
drm/i915/gvt: Parse default state to update reg whitelist
dt-bindings: dp-connector: Drop maxItems from -supply
...
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Fix build errors when these functions are not defined.
../drivers/video/fbdev/aty/atyfb_base.c: In function 'aty_power_mgmt':
../drivers/video/fbdev/aty/atyfb_base.c:2002:7: error: implicit declaration of function 'aty_ld_lcd'; did you mean 'aty_ld_8'? [-Werror=implicit-function-declaration]
2002 | pm = aty_ld_lcd(POWER_MANAGEMENT, par);
../drivers/video/fbdev/aty/atyfb_base.c:2004:2: error: implicit declaration of function 'aty_st_lcd'; did you mean 'aty_st_8'? [-Werror=implicit-function-declaration]
2004 | aty_st_lcd(POWER_MANAGEMENT, pm, par);
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210222032853.21483-1-rdunlap@infradead.org
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Patch series "mm: simplify free_highmem_page() and free_reserved_page()".
Let's simplify and unify free_highmem_page() and free_reserved_page().
This patch (of 2):
This function is never used and it is one of the last remaining user of
__free_reserved_page(). Let's just drop it.
Link: https://lkml.kernel.org/r/20210126182113.19892-1-david@redhat.com
Link: https://lkml.kernel.org/r/20210126182113.19892-2-david@redhat.com
Fixes: ffd29195ed720188 ("drivers/video/acornfb.c: remove dead code")
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Wei Yang <richard.weiyang@linux.alibaba.com>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull ARM updates from Russell King:
- Generalise byte swapping assembly
- Update debug addresses for STI
- Validate start of physical memory with DTB
- Do not clear SCTLR.nTLSMD in decompressor
- amba/locomo/sa1111 devices remove method return type is void
- address markers for KASAN in page table dump
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 9065/1: OABI compat: fix build when EPOLL is not enabled
ARM: 9055/1: mailbox: arm_mhuv2: make remove callback return void
amba: Make use of bus_type functions
amba: Make the remove callback return void
vfio: platform: simplify device removal
amba: reorder functions
amba: Fix resource leak for drivers without .remove
ARM: 9054/1: arch/arm/mm/mmu.c: Remove duplicate header
ARM: 9053/1: arm/mm/ptdump:Add address markers for KASAN regions
ARM: 9051/1: vdso: remove unneded extra-y addition
ARM: 9050/1: Kconfig: Select ARCH_HAVE_NMI_SAFE_CMPXCHG where possible
ARM: 9049/1: locomo: make locomo bus's remove callback return void
ARM: 9048/1: sa1111: make sa1111 bus's remove callback return void
ARM: 9047/1: smp: remove unused variable
ARM: 9046/1: decompressor: Do not clear SCTLR.nTLSMD for ARMv7+ cores
ARM: 9045/1: uncompress: Validate start of physical memory against passed DTB
ARM: 9042/1: debug: no uncompress debugging while semihosting
ARM: 9041/1: sti LL_UART: add STiH418 SBC UART0 support
ARM: 9040/1: use DEBUG_UART_PHYS and DEBUG_UART_VIRT for sti LL_UART
ARM: 9039/1: assembler: generalize byte swapping macro into rev_l
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All amba drivers return 0 in their remove callback. Together with the
driver core ignoring the return value anyhow, it doesn't make sense to
return a value here.
Change the remove prototype to return void, which makes it explicit that
returning an error value doesn't work as expected. This simplifies changing
the core remove callback to return void, too.
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org> # for drivers/memory
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com> # for hwtracing/coresight
Acked-By: Vinod Koul <vkoul@kernel.org> # for dmaengine
Acked-by: Guenter Roeck <linux@roeck-us.net> # for watchdog
Acked-by: Wolfram Sang <wsa@kernel.org> # for I2C
Acked-by: Takashi Iwai <tiwai@suse.de> # for sound
Acked-by: Vladimir Zapolskiy <vz@mleia.com> # for memory/pl172
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20210126165835.687514-5-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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The driver core ignores the return value of struct bus_type::remove
because there is only little that can be done. To simplify the quest to
make this function return void, let struct locomo_driver::remove return
void, too. All users already unconditionally return 0, this commit makes
it obvious that returning an error code is a bad idea and ensures future
users behave accordingly.
Link: https://lore.kernel.org/r/20201126110140.2021758-1-u.kleine-koenig@pengutronix.de
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight updates from Lee Jones:
"New Functionality:
- Convert to GPIO descriptors
Fix-ups:
- Trivial: fix coding style in sky81452-backlight
- Ensure backlight state is known on bring-up in ktd253
- Use common platform API in qcom-wled and fbdev"
* tag 'backlight-next-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight/video: Use Platform getter/setter functions
backlight: ktd253: Bring up in a known state
backlight: sky81452-backlight: Convert comma to semicolon
backlight: lms283gf05: Convert to GPIO descriptors
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Use getter and setter functions, for platform_device structures and a
spi_device structure.
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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The KTD253 backlight might already be on when the driver
is probed: then we don't really know what the current
ratio is and all light intensity settings will be off
relative to what it was at boot.
To fix this, bring up the backlight OFF then move it to
the default backlight from there so we know the state.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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