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When build and update kernel with the latest upstream binutils and
loongson3_defconfig, module loader fails with:
kmod: zsmalloc: Unknown relocation type 109
kmod: fuse: Unknown relocation type 109
kmod: fuse: Unknown relocation type 109
kmod: radeon: Unknown relocation type 109
kmod: nf_tables: Unknown relocation type 109
kmod: nf_tables: Unknown relocation type 109
This is because the latest upstream binutils replaces a pair of ADD64
and SUB64 with 64_PCREL, so add support for 64_PCREL relocation type.
Link: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=ecb802d02eeb
Cc: <stable@vger.kernel.org>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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When build and update kernel with the latest upstream binutils and
loongson3_defconfig, module loader fails with:
kmod: zsmalloc: Unsupport relocation type 99, please add its support.
kmod: fuse: Unsupport relocation type 99, please add its support.
kmod: ipmi_msghandler: Unsupport relocation type 99, please add its support.
kmod: ipmi_msghandler: Unsupport relocation type 99, please add its support.
kmod: pstore: Unsupport relocation type 99, please add its support.
kmod: drm_display_helper: Unsupport relocation type 99, please add its support.
kmod: drm_display_helper: Unsupport relocation type 99, please add its support.
kmod: drm_display_helper: Unsupport relocation type 99, please add its support.
kmod: fuse: Unsupport relocation type 99, please add its support.
kmod: fat: Unsupport relocation type 99, please add its support.
This is because the latest upstream binutils replaces a pair of ADD32
and SUB32 with 32_PCREL, so add support for 32_PCREL relocation type.
Link: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=ecb802d02eeb
Cc: <stable@vger.kernel.org>
Co-developed-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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The relocation types from 101 to 109 are used by GNU binutils >= 2.41,
add their definitions to use them in later patches.
Link: https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=include/elf/loongarch.h#l230
Cc: <stable@vger.kernel.org>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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For 64bit kernel without HIGHMEM, high_memory is the virtual address of
the highest physical address in the system. But __va(get_num_physpages()
<< PAGE_SHIFT) is not what we want for high_memory because there may be
holes in the physical address space. On the other hand, max_low_pfn is
calculated from memblock_end_of_DRAM(), which is exactly corresponding
to the highest physical address, so use it for high_memory calculation.
Cc: <stable@vger.kernel.org>
Fixes: d4b6f1562a3c3284adce ("LoongArch: Add Non-Uniform Memory Access (NUMA) support")
Signed-off-by: Chong Qiao <qiaochong@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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The drivers uses a mutex and I2C bus access in its PMIC EIC chip
get implementation. This means these functions can sleep and the PMIC EIC
chip should set the can_sleep property to true.
This will ensure that a warning is printed when trying to get the
value from a context that potentially can't sleep.
Fixes: 348f3cde84ab ("gpio: Add Spreadtrum PMIC EIC driver support")
Signed-off-by: Wenhua Lin <Wenhua.Lin@unisoc.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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As timbgpio_irq_enable()/timbgpio_irq_disable() callback could be
executed under irq context, it could introduce double locks on
&tgpio->lock if it preempts other execution units requiring
the same locks.
timbgpio_gpio_set()
--> timbgpio_update_bit()
--> spin_lock(&tgpio->lock)
<interrupt>
--> timbgpio_irq_disable()
--> spin_lock_irqsave(&tgpio->lock)
This flaw was found by an experimental static analysis tool I am
developing for irq-related deadlock.
To prevent the potential deadlock, the patch uses spin_lock_irqsave()
on &tgpio->lock inside timbgpio_gpio_set() to prevent the possible
deadlock scenario.
Signed-off-by: Chengfeng Ye <dg573847474@gmail.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Create buffers with cache coherency on the CPU side (write-back) while
disabling snooping on the VPU side. These buffers require an explicit
cache flush after each CPU-side modification.
Configuring pages as write-combined may introduce significant delays,
potentially taking hundreds of milliseconds for 64 MB buffers.
Added internal DRM_IVPU_BO_NOSNOOP mask which disables snooping on the
VPU side. Allocate FW runtime memory buffer (64 MB) as cached with
snooping-disabled.
This fixes random long FW loading times and boot params memory
corruption on warmboot (due to missed wmb).
Fixes: 02d5b0aacd05 ("accel/ivpu: Implement firmware parsing and booting")
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230926120943.GD846747@linux.intel.com
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Move sequence of masking and unmasking global interrupts from buttress
interrupt handler to generic one that handles both VPUIP and BTRS
interrupts.
Unmasking global interrupts will re-trigger MSI for any pending interrupts.
Lack of this sequence can randomly cause to miss any VPUIP interrupt that
comes after reading VPU_40XX_HOST_SS_ICB_STATUS_0 and before clearing
all active interrupt sources.
Fixes: 79cdc56c4a54 ("accel/ivpu: Add initial support for VPU 4")
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230925121137.872158-6-stanislaw.gruszka@linux.intel.com
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Do not enable frequency change interrupt on 40xx as it might
lead to an interrupt storm in current design.
FREQ_CHANGE interrupt is triggered on D0I2 entry which will cause
KMD to check VPU interrupt sources by reading VPUIP registers.
Access to those registers will toggle necessary clocks and trigger
another FREQ_CHANGE interrupt possibly ending in an infinite loop.
FREQ_CHANGE interrupt has only debug purposes and can be permanently
disabled.
Fixes: 79cdc56c4a54 ("accel/ivpu: Add initial support for VPU 4")
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230925121137.872158-5-stanislaw.gruszka@linux.intel.com
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We need to wait for the CLOCK_RESOURCE_OWN_ACK bit to be set
after configuring the workpoint. This step ensures that the VPU
microcontroller clock is actively toggling and ready for operation.
Previously, we relied solely on the READY bit in the VPU_STATUS
register, which indicated the completion of the workpoint download.
However, this approach was insufficient, as the READY bit could be set
while the device was still running on a sideband clock until the PLL
locked. To guarantee that the PLL is locked and the device is running on
the main clock source, we now wait for the CLOCK_RESOURCE_OWN_ACK before
proceeding with the remainder of the power-up sequence.
Fixes: 79cdc56c4a54 ("accel/ivpu: Add initial support for VPU 4")
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230925121137.872158-4-stanislaw.gruszka@linux.intel.com
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Use ivpu_dbg() to print the VPU ready message so it doesn't pollute
the dmesg.
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230925121137.872158-3-stanislaw.gruszka@linux.intel.com
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If we receive signal when waiting for IPC message response in
ivpu_ipc_receive() we return error and continue to operate.
Then the driver can send another IPC messages and re-use occupied
slot of the message still processed by the firmware. This can result
in corrupting firmware memory and following FW crash with messages:
[ 3698.569719] intel_vpu 0000:00:0b.0: [drm] ivpu_ipc_send_receive_internal(): IPC receive failed: type 0x1103, ret -512
[ 3698.569747] intel_vpu 0000:00:0b.0: [drm] ivpu_jsm_unregister_db(): Failed to unregister doorbell 3: -512
[ 3698.569756] intel_vpu 0000:00:0b.0: [drm] ivpu_ipc_tx_prepare(): IPC message vpu:0x88980000 not released by firmware
[ 3698.569763] intel_vpu 0000:00:0b.0: [drm] ivpu_ipc_tx_prepare(): JSM message vpu:0x88980040 not released by firmware
[ 3698.570234] intel_vpu 0000:00:0b.0: [drm] ivpu_ipc_send_receive_internal(): IPC receive failed: type 0x110e, ret -512
[ 3698.570318] intel_vpu 0000:00:0b.0: [drm] *ERROR* ivpu_mmu_dump_event(): MMU EVTQ: 0x10 (Translation fault) SSID: 0 SID: 3, e[2] 00000000, e[3] 00000208, in addr: 0x88988000, fetch addr: 0x0
To fix the issue don't use interruptible variant of wait event to
allow firmware to finish IPC processing.
Fixes: 5d7422cfb498 ("accel/ivpu: Add IPC driver and JSM messages")
Reviewed-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230925121137.872158-2-stanislaw.gruszka@linux.intel.com
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Since I will continue to work on Nouveau consistently, also beyond my
former and still ongoing VM_BIND/EXEC work, add myself to the list of
Nouveau maintainers.
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230926014913.7721-1-dakr@redhat.com
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The 'uevents' subdirectory does not exist in tools/testing/selftests/
and adding 'uevents' to the TARGETS list results in the following error:
make[1]: Entering directory 'xx/tools/testing/selftests/uevents'
make[1]: *** No targets specified and no makefile found. Stop.
make[1]: Leaving directory 'xx/tools/testing/selftests/uevents'
What actually exists in tools/testing/selftests/ is the 'uevent'
subdirectory.
Signed-off-by: Juntong Deng <juntong.deng@outlook.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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The removal of IMA_TRUSTED_KEYRING made IMA_LOAD_X509
and IMA_BLACKLIST_KEYRING unavailable because the latter
two depend on the former. Since IMA_TRUSTED_KEYRING was
deprecated in favor of INTEGRITY_TRUSTED_KEYRING use it
as a dependency for the two Kconfigs affected by the
deprecation.
Fixes: 5087fd9e80e5 ("ima: Remove deprecated IMA_TRUSTED_KEYRING Kconfig")
Signed-off-by: Oleksandr Tymoshenko <ovt@google.com>
Reviewed-by: Nayna Jain <nayna@linux.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue fixes from Tejun Heo:
- Remove double allocation of wq_update_pod_attrs_buf
- Fix missing allocation of pwq_release_worker when
wq_cpu_intensive_thresh_us is set to a custom value
* tag 'wq-for-6.6-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: Fix missed pwq_release_worker creation in wq_cpu_intensive_thresh_init()
workqueue: Removed double allocation of wq_update_pod_attrs_buf
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Ideally the busyness worker should take a gt pm wakeref because the
worker only needs to be active while gt is awake. However, the gt_park
path cancels the worker synchronously and this complicates the flow if
the worker is also running at the same time. The cancel waits for the
worker and when the worker releases the wakeref, that would call gt_park
and would lead to a deadlock.
The resolution is to take the global pm wakeref if runtime pm is already
active. If not, we don't need to update the busyness stats as the stats
would already be updated when the gt was parked.
Note:
- We do not requeue the worker if we cannot take a reference to runtime
pm since intel_guc_busyness_unpark would requeue the worker in the
resume path.
- If the gt was parked longer than time taken for GT timestamp to roll
over, we ignore those rollovers since we don't care about tracking the
exact GT time. We only care about roll overs when the gt is active and
running workloads.
- There is a window of time between gt_park and runtime suspend, where
the worker may run. This is acceptable since the worker will not find
any new data to update busyness.
v2: (Daniele)
- Edit commit message and code comment
- Use runtime pm in the worker
- Put runtime pm after enabling the worker
- Use Link tag and add Fixes tag
v3: (Daniele)
- Reword commit and comments and add details
Link: https://gitlab.freedesktop.org/drm/intel/-/issues/7077
Fixes: 77cdd054dd2c ("drm/i915/pmu: Connect engine busyness stats from GuC to pmu")
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230925192117.2497058-1-umesh.nerlige.ramappa@intel.com
(cherry picked from commit e2f99b79d4c594cdf7ab449e338d4947f5ea8903)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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There is an assertion in ggtt_reserve_guc_top that the global GTT
is of size at least GUC_GGTT_TOP, which is not the case on a 32-bit
platform; see commit 562d55d991b39ce376c492df2f7890fd6a541ffc
("drm/i915/bdw: Only use 2g GGTT for 32b platforms"). If GEM_BUG_ON
is enabled, this triggers a BUG(); if GEM_BUG_ON is disabled, the
subsequent reservation fails and the driver fails to initialise
the device:
i915 0000:00:02.0: [drm:i915_init_ggtt [i915]] Failed to reserve top of GGTT for GuC
i915 0000:00:02.0: Device initialization failed (-28)
i915 0000:00:02.0: Please file a bug on drm/i915; see https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs for details.
i915: probe of 0000:00:02.0 failed with error -28
Make the reservation at the top of the available space, whatever
that is, instead of assuming that the top will be GUC_GGTT_TOP.
Fixes: 911800765ef6 ("drm/i915/uc: Reserve upper range of GGTT")
Link: https://gitlab.freedesktop.org/drm/intel/-/issues/9080
Signed-off-by: Javier Pello <devel@otheo.eu>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Fernando Pacheco <fernando.pacheco@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: stable@vger.kernel.org # v5.3+
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230902171039.2229126186d697dbcf62d6d8@otheo.eu
(cherry picked from commit 0f3fa942d91165c2702577e9274d2ee1c7212afc)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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The folio conversion changed the behaviour of shmem_sg_alloc_table() to
put the entire length of the last folio into the sg list, even if the sg
list should have been shorter. gen8_ggtt_insert_entries() relied on the
list being the right length and would overrun the end of the page tables.
Other functions may also have been affected.
Clamp the length of the last entry in the sg list to be the expected
length.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Fixes: 0b62af28f249 ("i915: convert shmem_sg_free_table() to use a folio_batch")
Cc: stable@vger.kernel.org # 6.5.x
Link: https://gitlab.freedesktop.org/drm/intel/-/issues/9256
Link: https://lore.kernel.org/lkml/6287208.lOV4Wx5bFT@natalenko.name/
Reported-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230919194855.347582-1-willy@infradead.org
(cherry picked from commit 26a8e32e6d77900819c0c730fbfb393692dbbeea)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- delayed refs fixes:
- fix race when refilling delayed refs block reserve
- prevent transaction block reserve underflow when starting
transaction
- error message and value adjustments
- fix build warnings with CONFIG_CC_OPTIMIZE_FOR_SIZE and
-Wmaybe-uninitialized
- fix for smatch report where uninitialized data from invalid extent
buffer range could be returned to the caller
- fix numeric overflow in statfs when calculating lower threshold
for a full filesystem
* tag 'for-6.6-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: initialize start_slot in btrfs_log_prealloc_extents
btrfs: make sure to initialize start and len in find_free_dev_extent
btrfs: reset destination buffer when read_extent_buffer() gets invalid range
btrfs: properly report 0 avail for very full file systems
btrfs: log message if extent item not found when running delayed extent op
btrfs: remove redundant BUG_ON() from __btrfs_inc_extent_ref()
btrfs: return -EUCLEAN for delayed tree ref with a ref count not equals to 1
btrfs: prevent transaction block reserve underflow when starting transaction
btrfs: fix race when refilling delayed refs block reserve
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git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest fix from Shuah Khan:
"One single fix to unmount tracefs when test created mount"
* tag 'linux-kselftest-fixes-6.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests/user_events: Fix to unmount tracefs when test created mount
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gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
"This contains the usual miscellaneous fixes and cleanups for vfs and
individual fses:
Fixes:
- Revert ki_pos on error from buffered writes for direct io fallback
- Add missing documentation for block device and superblock handling
for changes merged this cycle
- Fix reiserfs flexible array usage
- Ensure that overlayfs sets ctime when setting mtime and atime
- Disable deferred caller completions with overlayfs writes until
proper support exists
Cleanups:
- Remove duplicate initialization in pipe code
- Annotate aio kioctx_table with __counted_by"
* tag 'v6.6-rc4.vfs.fixes' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs:
overlayfs: set ctime when setting mtime and atime
ntfs3: put resources during ntfs_fill_super()
ovl: disable IOCB_DIO_CALLER_COMP
porting: document superblock as block device holder
porting: document new block device opening order
fs/pipe: remove duplicate "offset" initializer
fs-writeback: do not requeue a clean inode having skipped pages
aio: Annotate struct kioctx_table with __counted_by
direct_write_fallback(): on error revert the ->ki_pos update from buffered write
reiserfs: Replace 1-element array with C99 style flex-array
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git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools fixes from Namhyung Kim:
"Build:
- Update header files in the tools/**/include directory to sync with
the kernel sources as usual.
- Remove unused bpf-prologue files. While it's not strictly a fix,
but the functionality was removed in this cycle so better to get
rid of the code together.
- Other minor build fixes.
Misc:
- Fix uninitialized memory access in PMU parsing code
- Fix segfaults on software event"
* tag 'perf-tools-fixes-for-v6.6-1-2023-09-25' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools:
perf jevent: fix core dump on software events on s390
perf pmu: Ensure all alias variables are initialized
perf jevents metric: Fix type of strcmp_cpuid_str
perf trace: Avoid compile error wrt redefining bool
perf bpf-prologue: Remove unused file
tools headers UAPI: Update tools's copy of drm.h headers
tools arch x86: Sync the msr-index.h copy with the kernel sources
perf bench sched-seccomp-notify: Use the tools copy of seccomp.h UAPI
tools headers UAPI: Copy seccomp.h to be able to build 'perf bench' in older systems
tools headers UAPI: Sync files changed by new fchmodat2 and map_shadow_stack syscalls with the kernel sources
perf tools: Update copy of libbpf's hashmap.c
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regulator_register()"
This reverts commit 5f4b204b6b8153923d5be8002c5f7082985d153f.
Since rdev->dev now has a release() callback, the proper way of freeing
the initialized device can be restored.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Link: https://lore.kernel.org/r/d7f469f3f7b1f0e1d52f9a7ede3f3c5703382090.1695077303.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Mark Brown <broonie@kernel.org>
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When fixing a memory leak in commit d3c731564e09 ("regulator: plug
of_node leak in regulator_register()'s error path") it moved the
device_initialize() call earlier, but did not move the `dev->class`
initialization. The bug was spotted and fixed by reverting part of
the commit (in commit 5f4b204b6b81 "regulator: core: fix kobject
release warning and memory leak in regulator_register()") but
introducing a different bug: now early error paths use `kfree(dev)`
instead of `put_device()` for an already initialized `struct device`.
Move the missing assignments to just after `device_initialize()`.
Fixes: d3c731564e09 ("regulator: plug of_node leak in regulator_register()'s error path")
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Link: https://lore.kernel.org/r/b5b19cb458c40c9d02f3d5a7bd1ba7d97ba17279.1695077303.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Mark Brown <broonie@kernel.org>
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I've changed employers, have company email that deals with patch-based
workflows without too much of a headache, and am trying to steer some
content out of my personal mail.
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Link: https://lore.kernel.org/r/20230925030647.40283-1-andrew@codeconstruct.com.au
Signed-off-by: Joel Stanley <joel@jms.id.au>
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The description for joel/aspeed.git on git.kernel.org currently says:
Old Aspeed tree. Please see joel/bmc.git
Let's update MAINTAINERS accordingly.
Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
Acked-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20230922223405.24717-2-zev@bewilderbeest.net
Signed-off-by: Joel Stanley <joel@jms.id.au>
|
|
Fix the deadlock by refactoring the MR cache cleanup flow to flush the
workqueue without holding the rb_lock.
This adds a race between cache cleanup and creation of new entries which
we solve by denied creation of new entries after cache cleanup started.
Lockdep:
WARNING: possible circular locking dependency detected
[ 2785.326074 ] 6.2.0-rc6_for_upstream_debug_2023_01_31_14_02 #1 Not tainted
[ 2785.339778 ] ------------------------------------------------------
[ 2785.340848 ] devlink/53872 is trying to acquire lock:
[ 2785.341701 ] ffff888124f8c0c8 ((work_completion)(&(&ent->dwork)->work)){+.+.}-{0:0}, at: __flush_work+0xc8/0x900
[ 2785.343403 ]
[ 2785.343403 ] but task is already holding lock:
[ 2785.344464 ] ffff88817e8f1260 (&dev->cache.rb_lock){+.+.}-{3:3}, at: mlx5_mkey_cache_cleanup+0x77/0x250 [mlx5_ib]
[ 2785.346273 ]
[ 2785.346273 ] which lock already depends on the new lock.
[ 2785.346273 ]
[ 2785.347720 ]
[ 2785.347720 ] the existing dependency chain (in reverse order) is:
[ 2785.349003 ]
[ 2785.349003 ] -> #1 (&dev->cache.rb_lock){+.+.}-{3:3}:
[ 2785.350160 ] __mutex_lock+0x14c/0x15c0
[ 2785.350962 ] delayed_cache_work_func+0x2d1/0x610 [mlx5_ib]
[ 2785.352044 ] process_one_work+0x7c2/0x1310
[ 2785.352879 ] worker_thread+0x59d/0xec0
[ 2785.353636 ] kthread+0x28f/0x330
[ 2785.354370 ] ret_from_fork+0x1f/0x30
[ 2785.355135 ]
[ 2785.355135 ] -> #0 ((work_completion)(&(&ent->dwork)->work)){+.+.}-{0:0}:
[ 2785.356515 ] __lock_acquire+0x2d8a/0x5fe0
[ 2785.357349 ] lock_acquire+0x1c1/0x540
[ 2785.358121 ] __flush_work+0xe8/0x900
[ 2785.358852 ] __cancel_work_timer+0x2c7/0x3f0
[ 2785.359711 ] mlx5_mkey_cache_cleanup+0xfb/0x250 [mlx5_ib]
[ 2785.360781 ] mlx5_ib_stage_pre_ib_reg_umr_cleanup+0x16/0x30 [mlx5_ib]
[ 2785.361969 ] __mlx5_ib_remove+0x68/0x120 [mlx5_ib]
[ 2785.362960 ] mlx5r_remove+0x63/0x80 [mlx5_ib]
[ 2785.363870 ] auxiliary_bus_remove+0x52/0x70
[ 2785.364715 ] device_release_driver_internal+0x3c1/0x600
[ 2785.365695 ] bus_remove_device+0x2a5/0x560
[ 2785.366525 ] device_del+0x492/0xb80
[ 2785.367276 ] mlx5_detach_device+0x1a9/0x360 [mlx5_core]
[ 2785.368615 ] mlx5_unload_one_devl_locked+0x5a/0x110 [mlx5_core]
[ 2785.369934 ] mlx5_devlink_reload_down+0x292/0x580 [mlx5_core]
[ 2785.371292 ] devlink_reload+0x439/0x590
[ 2785.372075 ] devlink_nl_cmd_reload+0xaef/0xff0
[ 2785.372973 ] genl_family_rcv_msg_doit.isra.0+0x1bd/0x290
[ 2785.374011 ] genl_rcv_msg+0x3ca/0x6c0
[ 2785.374798 ] netlink_rcv_skb+0x12c/0x360
[ 2785.375612 ] genl_rcv+0x24/0x40
[ 2785.376295 ] netlink_unicast+0x438/0x710
[ 2785.377121 ] netlink_sendmsg+0x7a1/0xca0
[ 2785.377926 ] sock_sendmsg+0xc5/0x190
[ 2785.378668 ] __sys_sendto+0x1bc/0x290
[ 2785.379440 ] __x64_sys_sendto+0xdc/0x1b0
[ 2785.380255 ] do_syscall_64+0x3d/0x90
[ 2785.381031 ] entry_SYSCALL_64_after_hwframe+0x46/0xb0
[ 2785.381967 ]
[ 2785.381967 ] other info that might help us debug this:
[ 2785.381967 ]
[ 2785.383448 ] Possible unsafe locking scenario:
[ 2785.383448 ]
[ 2785.384544 ] CPU0 CPU1
[ 2785.385383 ] ---- ----
[ 2785.386193 ] lock(&dev->cache.rb_lock);
[ 2785.386940 ] lock((work_completion)(&(&ent->dwork)->work));
[ 2785.388327 ] lock(&dev->cache.rb_lock);
[ 2785.389425 ] lock((work_completion)(&(&ent->dwork)->work));
[ 2785.390414 ]
[ 2785.390414 ] *** DEADLOCK ***
[ 2785.390414 ]
[ 2785.391579 ] 6 locks held by devlink/53872:
[ 2785.392341 ] #0: ffffffff84c17a50 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40
[ 2785.393630 ] #1: ffff888142280218 (&devlink->lock_key){+.+.}-{3:3}, at: devlink_get_from_attrs_lock+0x12d/0x2d0
[ 2785.395324 ] #2: ffff8881422d3c38 (&dev->lock_key){+.+.}-{3:3}, at: mlx5_unload_one_devl_locked+0x4a/0x110 [mlx5_core]
[ 2785.397322 ] #3: ffffffffa0e59068 (mlx5_intf_mutex){+.+.}-{3:3}, at: mlx5_detach_device+0x60/0x360 [mlx5_core]
[ 2785.399231 ] #4: ffff88810e3cb0e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x8d/0x600
[ 2785.400864 ] #5: ffff88817e8f1260 (&dev->cache.rb_lock){+.+.}-{3:3}, at: mlx5_mkey_cache_cleanup+0x77/0x250 [mlx5_ib]
Fixes: b95845178328 ("RDMA/mlx5: Change the cache structure to an RB-tree")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Michael Guralnik <michaelgur@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
|
|
checkpath is complaining about NULL string, change it to 'Unknown'.
Fixes: 37aa5c36aa70 ("IB/mlx5: Add UARs write-combining and non-cached mapping")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Link: https://lore.kernel.org/r/8638e5c14fadbde5fa9961874feae917073af920.1695203958.git.leonro@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
|
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The mutex was not unlocked on some of the error flows.
Moved the unlock location to include all the error flow scenarios.
Fixes: e1f4a52ac171 ("RDMA/mlx5: Create an indirect flow table for steering anchor")
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Hamdan Igbaria <hamdani@nvidia.com>
Link: https://lore.kernel.org/r/1244a69d783da997c0af0b827c622eb00495492e.1695203958.git.leonro@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
|
|
After the change to use dynamic cache structure, new cache entries
can be added and the mkey allocation can no longer assume that all
mkeys created for the cache have access_flags equal to zero.
Example of a flow that exposes the issue:
A user registers MR with RO on a HCA that cannot UMR RO and the mkey is
created outside of the cache. When the user deregisters the MR, a new
cache entry is created to store mkeys with RO.
Later, the user registers 2 MRs with RO. The first MR is reused from the
new cache entry. When we try to get the second mkey from the cache we see
the entry is empty so we go to the MR cache mkey allocation flow which
would have allocated a mkey with no access flags, resulting the user getting
a MR without RO.
Fixes: dd1b913fb0d0 ("RDMA/mlx5: Cache all user cacheable mkeys on dereg MR flow")
Reviewed-by: Edward Srouji <edwards@nvidia.com>
Signed-off-by: Michael Guralnik <michaelgur@nvidia.com>
Link: https://lore.kernel.org/r/8a802700b82def3ace3f77cd7a9ad9d734af87e7.1695203958.git.leonro@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
|
|
As the pll_id and pll_id can be zero (WM8960_SYSCLK_AUTO)
with the commit 2bbc2df46e67 ("ASoC: wm8960: Make automatic the
default clocking mode")
Then the machine driver will skip to call set_sysclk() and set_pll()
for codec, when the sysclk rate is different with what wm8960 read
at probe, the output sound frequency is wrong.
So change the fll_id and pll_id initial value, still keep machine
driver's behavior same as before.
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1695202992-24864-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
|
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rbd_dev_refresh() has been holding header_rwsem across header and
parent info read-in unnecessarily for ages. With commit 870611e4877e
("rbd: get snapshot context after exclusive lock is ensured to be
held"), the potential for deadlocks became much more real owning to
a) header_rwsem now nesting inside lock_rwsem and b) rw_semaphores
not allowing new readers after a writer is registered.
For example, assuming that I/O request 1, I/O request 2 and header
read-in request all target the same OSD:
1. I/O request 1 comes in and gets submitted
2. watch error occurs
3. rbd_watch_errcb() takes lock_rwsem for write, clears owner_cid and
releases lock_rwsem
4. after reestablishing the watch, rbd_reregister_watch() calls
rbd_dev_refresh() which takes header_rwsem for write and submits
a header read-in request
5. I/O request 2 comes in: after taking lock_rwsem for read in
__rbd_img_handle_request(), it blocks trying to take header_rwsem
for read in rbd_img_object_requests()
6. another watch error occurs
7. rbd_watch_errcb() blocks trying to take lock_rwsem for write
8. I/O request 1 completion is received by the messenger but can't be
processed because lock_rwsem won't be granted anymore
9. header read-in request completion can't be received, let alone
processed, because the messenger is stranded
Change rbd_dev_refresh() to take header_rwsem only for actually
updating rbd_dev->header. Header and parent info read-in don't need
any locking.
Cc: stable@vger.kernel.org # 0b035401c570: rbd: move rbd_dev_refresh() definition
Cc: stable@vger.kernel.org # 510a7330c82a: rbd: decouple header read-in from updating rbd_dev->header
Cc: stable@vger.kernel.org # c10311776f0a: rbd: decouple parent info read-in from updating rbd_dev
Cc: stable@vger.kernel.org
Fixes: 870611e4877e ("rbd: get snapshot context after exclusive lock is ensured to be held")
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Dongsheng Yang <dongsheng.yang@easystack.cn>
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Unlike header read-in, parent info read-in is already decoupled in
get_parent_info(), but it's buried in rbd_dev_v2_parent_info() along
with the processing logic.
Separate the initial read-in and update read-in logic into
rbd_dev_setup_parent() and rbd_dev_update_parent() respectively and
have rbd_dev_v2_parent_info() just populate struct parent_image_info
(i.e. what get_parent_info() did). Some existing QoI issues, like
flatten of a standalone clone being disregarded on refresh, remain.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Dongsheng Yang <dongsheng.yang@easystack.cn>
|
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Make rbd_dev_header_info() populate a passed struct rbd_image_header
instead of rbd_dev->header and introduce rbd_dev_update_header() for
updating mutable fields in rbd_dev->header upon refresh. The initial
read-in of both mutable and immutable fields in rbd_dev_image_probe()
passes in rbd_dev->header so no update step is required there.
rbd_init_layout() is now called directly from rbd_dev_image_probe()
instead of individually in format 1 and format 2 implementations.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Dongsheng Yang <dongsheng.yang@easystack.cn>
|
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Move rbd_dev_refresh() definition further down to avoid having to
move struct parent_image_info definition in the next commit. This
spares some forward declarations too.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Dongsheng Yang <dongsheng.yang@easystack.cn>
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When associating to an MLD AP, links may be disabled. Create all
resources associated with a disabled link so that we can later enable it
without having to create these resources on the fly.
Fixes: 6d543b34dbcf ("wifi: mac80211: Support disabled links during association")
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Link: https://lore.kernel.org/r/20230925173028.f9afdb26f6c7.I4e6e199aaefc1bf017362d64f3869645fa6830b5@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If the structure is not initialized then boolean types might be copied
into the tracing data without being initialised. This causes data from
the stack to leak into the trace and also triggers a UBSAN failure which
can easily be avoided here.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Link: https://lore.kernel.org/r/20230925171855.a9271ef53b05.I8180bae663984c91a3e036b87f36a640ba409817@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Drop one function parameter's kernel-doc comment since the parameter
was removed. This prevents a kernel-doc warning:
block/disk-events.c:300: warning: Excess function parameter 'events' description in 'disk_force_media_change'
Fixes: ab6860f62bfe ("block: simplify the disk_force_media_change interface")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Closes: lore.kernel.org/r/202309060957.vfl0mUur-lkp@intel.com
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230926005232.23666-1-rdunlap@infradead.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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acpi_nfit_interleave's field 'line_offset' is switched to flexible array [1],
but sizeof_idt() still calculates the size in the form of 1-element array.
Therefore, fix incorrect calculation in sizeof_idt().
[1] https://lore.kernel.org/lkml/2652195.BddDVKsqQX@kreacher/
Fixes: 2a5ab99847bd ("ACPICA: struct acpi_nfit_interleave: Replace 1-element array with flexible array")
Cc: stable@vger.kernel.org # v6.4+
Signed-off-by: Yu Liao <liaoyu15@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20230826071654.564372-1-liaoyu15@huawei.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
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As per the FF-A specification: section "Usage of other memory region
attributes", in a transaction to donate memory or lend memory to a single
borrower, if the receiver is a PE or Proxy endpoint, the owner must not
specify the attributes and the relayer will return INVALID_PARAMETERS
if the attributes are set.
Let us not set the memory region attributes for MEM_LEND.
Fixes: 82a8daaecfd9 ("firmware: arm_ffa: Add support for MEM_LEND")
Reported-by: Joao Alves <joao.alves@arm.com>
Reported-by: Olivier Deprez <olivier.deprez@arm.com>
Link: https://lore.kernel.org/r/20230919-ffa_v1-1_notif-v2-13-6f3a3ca3923c@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
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A szybot reproducer that does write I/O while truncating the size of a
block device can end up in clean_bdev_aliases, which tries to clean the
bdev aliases that it uses. This is because iomap_to_bh automatically
sets the BH_New flag when outside of i_size. For block devices updates
to i_size are racy and we can hit this case in a tiny race window,
leading to the eventual clean_bdev_aliases call. Fix this by erroring
out of > i_size I/O on block devices.
Reported-by: syzbot+1fa947e7f09e136925b8@syzkaller.appspotmail.com
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: syzbot+1fa947e7f09e136925b8@syzkaller.appspotmail.com
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux into xfs-6.6-fixesB
xfs: fix reloading the last iunlink item
It's not a good idea to be trying to send bug fixes to the mailing list
while also trying to take a vacation. Dave sent some review comments
about the iunlink reloading patches, I changed them in djwong-dev, and
forgot to backport those changes to my -fixes tree.
As a result, the patch is missing some important pieces. Perhaps
manually copying code diffs between email and two separate git trees
is archaic and stupid^W^W^W^Wisn't really a good idea?
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
* tag 'fix-fix-iunlink-6.6_2023-09-25' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux:
xfs: fix reloading entire unlinked bucket lists
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The iommu_suspend() syscore suspend callback is invoked with IRQ disabled.
Allocating memory with the GFP_KERNEL flag may re-enable IRQs during
the suspend callback, which can cause intermittent suspend/hibernation
problems with the following kernel traces:
Calling iommu_suspend+0x0/0x1d0
------------[ cut here ]------------
WARNING: CPU: 0 PID: 15 at kernel/time/timekeeping.c:868 ktime_get+0x9b/0xb0
...
CPU: 0 PID: 15 Comm: rcu_preempt Tainted: G U E 6.3-intel #r1
RIP: 0010:ktime_get+0x9b/0xb0
...
Call Trace:
<IRQ>
tick_sched_timer+0x22/0x90
? __pfx_tick_sched_timer+0x10/0x10
__hrtimer_run_queues+0x111/0x2b0
hrtimer_interrupt+0xfa/0x230
__sysvec_apic_timer_interrupt+0x63/0x140
sysvec_apic_timer_interrupt+0x7b/0xa0
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1f/0x30
...
------------[ cut here ]------------
Interrupts enabled after iommu_suspend+0x0/0x1d0
WARNING: CPU: 0 PID: 27420 at drivers/base/syscore.c:68 syscore_suspend+0x147/0x270
CPU: 0 PID: 27420 Comm: rtcwake Tainted: G U W E 6.3-intel #r1
RIP: 0010:syscore_suspend+0x147/0x270
...
Call Trace:
<TASK>
hibernation_snapshot+0x25b/0x670
hibernate+0xcd/0x390
state_store+0xcf/0xe0
kobj_attr_store+0x13/0x30
sysfs_kf_write+0x3f/0x50
kernfs_fop_write_iter+0x128/0x200
vfs_write+0x1fd/0x3c0
ksys_write+0x6f/0xf0
__x64_sys_write+0x1d/0x30
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
Given that only 4 words memory is needed, avoid the memory allocation in
iommu_suspend().
CC: stable@kernel.org
Fixes: 33e07157105e ("iommu/vt-d: Avoid GFP_ATOMIC where it is not needed")
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Tested-by: Ooi, Chin Hao <chin.hao.ooi@intel.com>
Link: https://lore.kernel.org/r/20230921093956.234692-1-rui.zhang@intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20230925120417.55977-2-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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|
Nathan reported that he was seeing the new warning in
setattr_copy_mgtime pop when starting podman containers. Overlayfs is
trying to set the atime and mtime via notify_change without also
setting the ctime.
POSIX states that when the atime and mtime are updated via utimes() that
we must also update the ctime to the current time. The situation with
overlayfs copy-up is analogies, so add ATTR_CTIME to the bitmask.
notify_change will fill in the value.
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Christian Brauner <brauner@kernel.org>
Acked-by: Amir Goldstein <amir73il@gmail.com>
Message-Id: <20230913-ctime-v1-1-c6bc509cbc27@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
|
|
During ntfs_fill_super() some resources are allocated that we need to
cleanup in ->put_super() such as additional inodes. When
ntfs_fill_super() fails these resources need to be cleaned up as well.
Reported-by: syzbot+2751da923b5eb8307b0b@syzkaller.appspotmail.com
Fixes: 78a06688a4d4 ("ntfs3: drop inode references in ntfs_put_super()")
Signed-off-by: Christian Brauner <brauner@kernel.org>
|
|
The imx25, imx50, imx51 and imx53 SPIs are compatible with the imx35.
Document them accordingly.
Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230924183904.752415-1-festevam@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
|
|
On i.MX8MP, the BCE and TERE bit are binding with mclk
enablement, if BCE and TERE are cleared the MCLK also be
disabled on output pin, that cause the external codec (wm8960)
in wrong state.
Codec (wm8960) is using the mclk to generate PLL clock,
if mclk is disabled before disabling PLL, the codec (wm8960)
won't generate bclk and frameclk when sysclk switch to
MCLK source in next test case.
The test case:
$aplay -r44100 test1.wav (PLL source)
$aplay -r48000 test2.wav (MCLK source)
aplay: pcm_write:2127: write error: Input/output error
Fixes: 269f399dc19f ("ASoC: fsl_sai: Disable bit clock with transmitter")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1695116533-23287-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
|
|
Add compatible for RK3128's S/PDIF.
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230829171647.187787-4-knaerzche@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
|
|
acpi_video_bus_add_notify_handler() could free video->input and
set it to NULL on failure, but this failure would be missed in its
caller acpi_video_bus_add(). As a result, when an error happens in
acpi_dev_install_notify_handler(), acpi_video_bus_add() would call
acpi_video_bus_remove_notify_handler(), where a potential NULL pointer
video->input is dereferenced in input_unregister_device().
Fix this by adding a return value check and adjusting the following
error handling code.
Fixes: 6f7016819766 ("ACPI: video: Install Notify() handler directly")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
