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v7.4-rc1
10601 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
67f1f9b38c |
more fbdev fixes and cleanups for 7.4-rc1:
- atmel_lcdfb: avoid issues due to empty modelist in probe - simplify the console-blanking interface -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQS86RI+GtKfB8BJu973ErUQojoPXwUCauPGHgAKCRD3ErUQojoP X4RCAQCTCxRJoIZk1ovnehNblN0rZSg698nhUMpO1pwiAIrVUAEAqj27FNzv7L2p EBbqEONGzDXNw3QTp0g6hm5q87N0Agk= =Wvpv -----END PGP SIGNATURE----- Merge tag 'fbdev-for-7.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev Pull more fbdev updates from Helge Deller: - atmel_lcdfb: avoid issues due to empty modelist in probe - simplify the console-blanking interface * tag 'fbdev-for-7.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev: fbdev: atmel_lcdfb: fix list_first_entry() on possibly empty modelist in probe vt: Remove old-style con_blank vgacon: Implement struct consw.con_unblank sticon: Implement struct consw.con_unblank newport_con: Implement struct consw.con_unblank fbcon: Implement struct consw.con_unblank dummycon: Implement struct consw.con_unblank vt: Add con_unblank callback to struct consw |
||
|
Linus Torvalds
|
8a36f53fd5 |
mm.git review status for linus..mm-stable
Everything:
Total patches: 213
Fixes: tags: 69
cc:stable patches: 43
Reviews/patch: 2.04
Reviewed rate: 86%
Excluding DAMON:
Total patches: 192
Fixes: tags: 63
cc:stable patches: 39
Reviews/patch: 2.18
Reviewed rate: 89%
Excluding DAMON and selftests:
Total patches: 182
Fixes: tags: 57
cc:stable patches: 39
Reviews/patch: 2.23
Reviewed rate: 89%
Summary of series in this merge:
- "mm: make VMA flag semantics explicit, eliminate VM_SPECIAL"
(Lorenzo Stoakes (ARM)):
Replace VM_SPECIAL with helpers describing mapping ownership and
behavior. Enforce the mmap flag rules and convert affected drivers,
removing ambiguous tests shared by driver mappings and ordinary memory.
- "support kselftest on nommu platform" (Hajime Tazaki):
Add opt-in mmap and mremap tests for NOMMU systems. Teach the runner to
avoid its fork-dependent timeout command and document the build and
runtime requirements.
- "mm/collapse: separate a collapse from its callers"
(Kiryl Shutsemau (Meta)):
Separate huge-page collapse from caller policy. Replace khugepaged
identity checks with explicit permissions, and separate scanning from
collapse with the mmap_lock drop in one place.
- "mm: implement and use vma_has_anon_rmap(), silence KCSAN"
(Lorenzo Stoakes (ARM)):
Provide a common helper for testing whether a VMA has anonymous reverse
mappings. Document the locking rules, annotate intentional concurrent
reads for KCSAN, and convert the core MM callers.
- "mm/sparse: remove SECTION_MARKED_PRESENT and further cleanups"
(David Hildenbrand (Arm)):
Remove SECTION_MARKED_PRESENT in favor of the early-section flag.
Simplify sparse memory initialization, section metadata handling and
related PFN validity checks.
- "sh: remove NUMA and SPARSEMEM support" (Mike Rapoport (Microsoft)):
Remove SuperH NUMA and SPARSEMEM support. The extra memory banks have
been unusable since the NO_BOOTMEM conversion, leaving only the code and
data overhead.
- "mm: Unify device DAX and HugeTLB vmemmap population paths"
(Muchun Song):
Unify the generic device DAX and HugeTLB vmemmap population paths and
shared tail-page handling. Remove the duplicate DAX machinery while
retaining the powerpc radix implementation.
- "kselftest: mm: fix some failure of split_huge_page_test" (Yeoreum Yun):
Fix huge-page split tests racing with khugepaged recollapse. Use pagemap
and page flags instead of VMA-boundary assumptions which fail when glibc
has already enabled THP.
- "memcg: move memcgid refcount to objcg to unpin dying memcgs"
(Bingfang Guo):
Let dying memcgs be freed while swapped-out shmem still holds their IDs.
Move ID references to reparentable objcgs, with the necessary swap
accounting and RCU lifetime changes.
- "mm/truncate: fix data loss when truncating straddling large folios"
(Zhang Yi):
Preserve out-of-range data when truncating straddling large folios. Fix
a lookup race and split-failure handling, and handle minimum folio orders
for the forthcoming ext4 iomap buffered I/O path.
- "mm/damon: introduce damos quota goal target metric complement flag"
(SJ Park):
Let DAMOS quota goals use a metric's complement, so utilization can also
express free-memory goals without adding separate metrics. Add the sysfs
interface, documentation and tests.
- "arm64/mm: Standardize printing for pgtable entries" (Anshuman Khandual):
Use the generic formatter for arm64 page-table entries, ready for future
wider entries. Move the safe-PTE-update check out of the header to avoid
an include cycle.
- "mm: kmsan: fix iounmap metadata teardown" (Dima Koziuk):
Fix KMSAN metadata leaks on iounmap and failed ioremap allocations. Free
backing pages before removing their mappings, and share the teardown with
partial-allocation cleanup.
- "mm/damon/core: preserve quota state when constructing schemes"
(Karl Mehltretter):
Preserve running DAMOS quota state while validating parameter updates.
Even rejected updates could reset accounting and exceed the quota window;
add tests for both accepted and rejected updates.
- "mm/vmalloc: fix vmalloc_dump_obj VA lookup" (Ye Liu):
Fix vmalloc_dump_obj() lookups for last-page addresses and allocations
spanning vmap zones. These allocations were being missed in diagnostic
output.
- "mm: various (urgent?) fixes" (David Hildenbrand (Arm)):
Fix mmap charge leaks and hugetlb use-after-free, wrong-address
unmapping, stuck locks and endless faults. Also preserve reservations on
failed mremap and handle stale userfaultfd bits.
- "maple_tree: fix maple_range_64 crashes in RCU mode" (Dimitris Charisis):
Fix pointer and metadata confusion during RCU destruction of
maple_range_64 nodes, avoiding double frees and invalid accesses. Add a
regression test; no in-tree user currently uses this combination.
- "mm: fix hugetlb NR_HUGETLB accounting on folio migration" (Hongfu Li):
Fix hugetlb migration and preallocation accounting so /proc/vmstat
retains the correct count and memory.numa_stat follows the folio to its
new node.
- "mm/damon: fix a minor bug, clean code, and add a test" (SJ Park):
Fix 32-bit DAMON age overflow which made old regions look young. Share
hugetlb folio acquisition code and add a regression test for the
previously fixed last-region skipping bug.
- "mm/damon/core: cleanup code, reduce stack usage, and add kunit"
(SJ Park):
Reduce kdamond stack usage and remove unused enums. Add deterministic
PSI quota-goal tests which do not depend on the machine's current memory
pressure.
- "mm/damon: fix the temporal goal tuner's size quota conversion"
(Donggeun Yoo):
Bound the temporal tuner's quota conversion to prevent overflow and zero
effective quotas, which could stop schemes making progress. Add boundary
tests.
- "Don't use GFP_DMA when calling dma_alloc_coherent" (Baoquan He):
Remove redundant GFP_DMA flags from coherent DMA allocation calls. The
DMA API already selects the zone from device limits and ignores the
caller's flag.
- "kselftest: mm: fix intermittent failure khugepaged test" (Yeoreum Yun):
Propagate child-process failures in the khugepaged tests and prevent
background collapse from racing their checks. This removes false passes
and intermittent failures.
- "MAINTAINERS: cover all hugetlb headers under HUGETLB SUBSYSTEM"
(Enze Li):
Cover all hugetlb headers in MAINTAINERS so get_maintainer.pl finds the
right maintainers. Also label the closing hugetlb_cgroup.h include
guard.
Summary of the 65 singletons in this merge:
The singletons include a few worthwhile performance fixes. Avoiding
unnecessary reverse-map tree updates gave a reported 15.9% improvement
in UnixBench's execl test on a 192-core x86 system. A reclaim retry fix
stops defrag_mode from spinning under memory.low protection; a reported
file-creation stress test ran 5.7 times faster, with far less memory
pressure. Narrower hugetlb invalidations also spare KVM guests needless
refaults: the reported Redis-in-VM P99 QPS penalty while punching holes
fell from 7.09% to 1.45%.
Several fixes prevent lost data or corrupted memory. Lazyfree huge-page
races with mremap()/munmap() could lose data or access freed memory, and
MADV_COLD could lose a concurrent write's dirty bit. Another fix
prevents stale migration entries from outliving large folios. On
filesystems with blocks smaller than a page, extending a file by 4 GiB
or more could expose bytes written past the old EOF through mmap instead
of zeroes. That is fixed, along with use-after-free races in
PAGEMAP_SCAN during process exit and in memory-cgroup accounting on
PREEMPT_RT kernels.
Other fixes stop UFFDIO_MOVE spinning forever on pinned large folios,
which could wedge other memory operations, and stop mremap() leaking
commit charges until allocations fail under strict overcommit. A further
fix keeps userfaultfd tracking intact on neighboring mappings. NUMA
binding no longer prevents long-term pins when the chosen node has only
movable memory, fixing QEMU/VFIO startup and io_uring buffer
registration failures. MGLRU also gets a fix for early-boot crashes with
memory cgroups disabled at boot, notably in small crash kernels.
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Merge tag 'mm-stable-2026-10-25-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more MM updates from Andrew Morton:
- "mm: make VMA flag semantics explicit, eliminate VM_SPECIAL" (Lorenzo
Stoakes):
Replace VM_SPECIAL with helpers describing mapping ownership and
behavior. Enforce the mmap flag rules and convert affected drivers,
removing ambiguous tests shared by driver mappings and ordinary
memory.
- "support kselftest on nommu platform" (Hajime Tazaki):
Add opt-in mmap and mremap tests for NOMMU systems. Teach the runner
to avoid its fork-dependent timeout command and document the build
and runtime requirements.
- "mm/collapse: separate a collapse from its callers" (Kiryl
Shutsemau):
Separate huge-page collapse from caller policy. Replace khugepaged
identity checks with explicit permissions, and separate scanning from
collapse with the mmap_lock drop in one place.
- "mm: implement and use vma_has_anon_rmap(), silence KCSAN" (Lorenzo
Stoakes):
Provide a common helper for testing whether a VMA has anonymous
reverse mappings. Document the locking rules, annotate intentional
concurrent reads for KCSAN, and convert the core MM callers.
- "mm/sparse: remove SECTION_MARKED_PRESENT and further cleanups"
(David Hildenbrand):
Remove SECTION_MARKED_PRESENT in favor of the early-section flag.
Simplify sparse memory initialization, section metadata handling and
related PFN validity checks.
- "sh: remove NUMA and SPARSEMEM support" (Mike Rapoport):
Remove SuperH NUMA and SPARSEMEM support. The extra memory banks have
been unusable since the NO_BOOTMEM conversion, leaving only the code
and data overhead.
- "mm: Unify device DAX and HugeTLB vmemmap population paths" (Muchun
Song):
Unify the generic device DAX and HugeTLB vmemmap population paths and
shared tail-page handling. Remove the duplicate DAX machinery while
retaining the powerpc radix implementation.
- "kselftest: mm: fix some failure of split_huge_page_test" (Yeoreum
Yun):
Fix huge-page split tests racing with khugepaged recollapse. Use
pagemap and page flags instead of VMA-boundary assumptions which fail
when glibc has already enabled THP.
- "memcg: move memcgid refcount to objcg to unpin dying memcgs"
(Bingfang Guo):
Let dying memcgs be freed while swapped-out shmem still holds their
IDs. Move ID references to reparentable objcgs, with the necessary
swap accounting and RCU lifetime changes.
- "mm/truncate: fix data loss when truncating straddling large folios"
(Zhang Yi):
Preserve out-of-range data when truncating straddling large folios.
Fix a lookup race and split-failure handling, and handle minimum
folio orders for the forthcoming ext4 iomap buffered I/O path.
- "mm/damon: introduce damos quota goal target metric complement flag"
(SJ Park):
Let DAMOS quota goals use a metric's complement, so utilization can
also express free-memory goals without adding separate metrics. Add
the sysfs interface, documentation and tests.
- "arm64/mm: Standardize printing for pgtable entries" (Anshuman
Khandual):
Use the generic formatter for arm64 page-table entries, ready for
future wider entries. Move the safe-PTE-update check out of the
header to avoid an include cycle.
- "mm: kmsan: fix iounmap metadata teardown" (Dima Koziuk):
Fix KMSAN metadata leaks on iounmap and failed ioremap allocations.
Free backing pages before removing their mappings, and share the
teardown with partial-allocation cleanup.
- "mm/damon/core: preserve quota state when constructing schemes" (Karl
Mehltretter):
Preserve running DAMOS quota state while validating parameter
updates. Even rejected updates could reset accounting and exceed the
quota window; add tests for both accepted and rejected updates.
- "mm/vmalloc: fix vmalloc_dump_obj VA lookup" (Ye Liu):
Fix vmalloc_dump_obj() lookups for last-page addresses and
allocations spanning vmap zones. These allocations were being missed
in diagnostic output.
- "mm: various (urgent?) fixes" (David Hildenbrand):
Fix mmap charge leaks and hugetlb use-after-free, wrong-address
unmapping, stuck locks and endless faults. Also preserve reservations
on failed mremap and handle stale userfaultfd bits.
- "maple_tree: fix maple_range_64 crashes in RCU mode" (Dimitris
Charisis):
Fix pointer and metadata confusion during RCU destruction of
maple_range_64 nodes, avoiding double frees and invalid accesses. Add
a regression test; no in-tree user currently uses this combination.
- "mm: fix hugetlb NR_HUGETLB accounting on folio migration" (Hongfu
Li):
Fix hugetlb migration and preallocation accounting so /proc/vmstat
retains the correct count and memory.numa_stat follows the folio to
its new node.
- "mm/damon: fix a minor bug, clean code, and add a test" (SJ Park):
Fix 32-bit DAMON age overflow which made old regions look young.
Share hugetlb folio acquisition code and add a regression test for
the previously fixed last-region skipping bug.
- "mm/damon/core: cleanup code, reduce stack usage, and add kunit" (SJ
Park):
Reduce kdamond stack usage and remove unused enums. Add deterministic
PSI quota-goal tests which do not depend on the machine's current
memory pressure.
- "mm/damon: fix the temporal goal tuner's size quota conversion"
(Donggeun Yoo):
Bound the temporal tuner's quota conversion to prevent overflow and
zero effective quotas, which could stop schemes making progress. Add
boundary tests.
- "Don't use GFP_DMA when calling dma_alloc_coherent" (Baoquan He):
Remove redundant GFP_DMA flags from coherent DMA allocation calls.
The DMA API already selects the zone from device limits and ignores
the caller's flag.
- "kselftest: mm: fix intermittent failure khugepaged test" (Yeoreum
Yun):
Propagate child-process failures in the khugepaged tests and prevent
background collapse from racing their checks. This removes false
passes and intermittent failures.
- "MAINTAINERS: cover all hugetlb headers under HUGETLB SUBSYSTEM"
(Enze Li):
Cover all hugetlb headers in MAINTAINERS so get_maintainer.pl finds
the right maintainers. Also label the closing hugetlb_cgroup.h
include guard.
Summary of the 65 singletons in this merge:
The singletons include a few worthwhile performance fixes. Avoiding
unnecessary reverse-map tree updates gave a reported 15.9% improvement
in UnixBench's execl test on a 192-core x86 system. A reclaim retry
fix stops defrag_mode from spinning under memory.low protection; a
reported file-creation stress test ran 5.7 times faster, with far less
memory pressure. Narrower hugetlb invalidations also spare KVM guests
needless refaults: the reported Redis-in-VM P99 QPS penalty while
punching holes fell from 7.09% to 1.45%.
Several fixes prevent lost data or corrupted memory. Lazyfree
huge-page races with mremap()/munmap() could lose data or access freed
memory, and MADV_COLD could lose a concurrent write's dirty bit.
Another fix prevents stale migration entries from outliving large
folios. On filesystems with blocks smaller than a page, extending a
file by 4 GiB or more could expose bytes written past the old EOF
through mmap instead of zeroes. That is fixed, along with
use-after-free races in PAGEMAP_SCAN during process exit and in
memory-cgroup accounting on PREEMPT_RT kernels.
Other fixes stop UFFDIO_MOVE spinning forever on pinned large folios,
which could wedge other memory operations, and stop mremap() leaking
commit charges until allocations fail under strict overcommit. A
further fix keeps userfaultfd tracking intact on neighboring mappings.
NUMA binding no longer prevents long-term pins when the chosen node
has only movable memory, fixing QEMU/VFIO startup and io_uring buffer
registration failures. MGLRU also gets a fix for early-boot crashes
with memory cgroups disabled at boot, notably in small crash kernels.
* tag 'mm-stable-2026-10-25-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (213 commits)
mm: multi-gen LRU: fix NULL lruvec->pgdat deref with memcg disabled on cmdline
mm/page_counter: use WRITE_ONCE() for emin/elow when parent is the root
mm/memcontrol: publish null pointer before dropping css reference
test_maple_tree: test maple_range_64 node in RCU mode
maple_tree: fix maple_range_64 crashes in RCU mode
mm/vma: avoid broken uffd merge on mremap
tools/testing/shared: catch a failed posix_memalign()
mm/damon/core: remove unreachable damos charge_{target,addr}_from
mm/shrinker: allocate shrinker_info_unit from a dedicated kmem_cache
riscv: mm: exclude invalid THP PMDs from page table check
mm/damon/core: filter out damos address filter-split failed region
fs/proc/task_mmu: pin mm_users in do_pagemap_scan()
mm/mempolicy: apply bind policies against the scoped allocation zone
mm/vmscan: reclaim every zone in per-node proactive reclaim
mm/mremap: correctly uncharge accountable VMAs in error path
mm/mremap: populate calculated fields in vrm state correctly
MAINTAINERS: add an entry for MEMORY MANAGEMENT - MEMORY MAP
mm: bdi: reset min_ratio after the sysfs attributes are gone
mm/page_vma_mapped: continue past nonmatching huge PMDs
selftests/mm: skip hugetlb cgroup v2 tests without the needed controllers
...
|
||
|
Linus Torvalds
|
d135ab453a |
Backlight for v7.4
- Improvements & Fixes
- Qualcomm WLED: Fix a NULL pointer dereference in `wled_remove()` by setting platform
driver data in `wled_probe()`
- Qualcomm WLED: Fix the WLED3 brightness register stride to prevent consecutive string
writes from overlapping
- Qualcomm WLED: Read back the hardware-programmed brightness at probe, expose it via
`get_brightness()`, and prevent unbalanced OVP IRQ enabling
- TI LM3630A: Cancel delayed work synchronously after freeing the IRQ and before
destroying the workqueue in `lm3630a_remove()`
- Cleanups & Refactoring
- Ilitek ILI9320 / Kinetic KTD253: Fix spelling typos in comments
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Merge tag 'backlight-next-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight updates from Lee Jones:
"Improvements & Fixes:
- Qualcomm WLED: Fix a NULL pointer dereference in `wled_remove()` by
setting platform driver data in `wled_probe()`
- Qualcomm WLED: Fix the WLED3 brightness register stride to prevent
consecutive string writes from overlapping
- Qualcomm WLED: Read back the hardware-programmed brightness at
probe, expose it via
`get_brightness()`, and prevent unbalanced OVP IRQ enabling
- TI LM3630A: Cancel delayed work synchronously after freeing the IRQ
and before destroying the workqueue in `lm3630a_remove()`
Cleanups & Refactoring:
- Ilitek ILI9320 / Kinetic KTD253: Fix spelling typos in comments"
* tag 'backlight-next-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight: qcom-wled: Read back the programmed brightness at probe
backlight: qcom-wled: Fix unbalanced OVP IRQ enable at probe
backlight: qcom-wled: Fix WLED3 brightness register stride
backlight: qcom-wled: Fix NULL pointer dereference in wled_remove()
backlight: lm3630a: Cancel delayed work before destroying workqueue
backlight: ili9320/ktd253: Fix typos in comments
|
||
|
Linus Torvalds
|
5b93dc1c0c |
LEDs for v7.4
- New Support & Features
- Core: Add `led_trigger_notify_hw_control_changed()` to allow drivers to notify the
core of autonomous hardware control transitions
- Core: Add the `hw_offloaded()` trigger callback and `trigger_may_offload_to_hw` sysfs
attribute to expose hardware-offloaded triggers
- Netdev Trigger: Implement the `hw_offloaded()` callback to report hardware control
state to the LED core
- Analog Devices LTC3208: Add support for the LTC3208 7-channel multi-display I2C LED
driver
- ChromeOS EC: Implement the `hw_offloaded()` callback for the `chromeos-auto` trigger
- CZ.NIC Turris Omnia: Implement the `hw_offloaded()` callback and declare `omnia-mcu`
as a hardware control trigger
- STMicroelectronics ST1202: Add hardware-accelerated blink support via `blink_set()`
- Improvements & Fixes
- Class: Always hold the `led_access` mutex in `brightness_show()` to avoid exposing
transient registration states
- Class: Deactivate active hardware control triggers when writing to the `brightness`
sysfs attribute
- Core: Enforce strict validation in `led_trigger_is_hw_controlled()` and warn on legacy
fallback paths
- Flash Class: Initialize the fault variable in `flash_fault_show()` to prevent
undefined behavior when callbacks perform bitwise ORs
- Kinetic KTD2692: Pass the driver context directly to `regulator_disable_action()` to
prevent a NULL pointer dereference during error unwinding
- Maxim MAX77705: Use `fwnode_for_each_child_node_scoped()` in `max77705_add_led()` to
prevent child node reference leaks on error paths
- NXP PCA9532: Check the return value of `i2c_smbus_read_byte_data()` in
`pca9532_getled()` to avoid integer underflow on read errors
- Qualcomm WLED: Fix a NULL pointer dereference in `wled_remove()` by setting platform
driver data in `wled_probe()`
- Qualcomm WLED: Fix the WLED3 brightness register stride to prevent consecutive string
writes from overlapping
- Qualcomm WLED: Read back the hardware-programmed brightness at probe, expose it via
`get_brightness()`, and prevent unbalanced OVP IRQ enabling
- STMicroelectronics ST1202: Clear unused PWM pattern slots in `pattern_set()` and
`blink_set()` to prevent unintended output when sharing the global sequencer
- STMicroelectronics ST1202: Program and cap the channel current according to
`max_brightness` across brightness, blink, and hardware pattern modes, and scale
pattern brightness to the 12-bit PWM range
- STMicroelectronics ST1202: Retain a reference to each child LED firmware node for the
lifetime of the device
- STMicroelectronics ST1202: Use only the blocking `brightness_set_blocking()` callback
to avoid sleeping in atomic context during I2C transfers
- TI LM3692x: Check the final register write in `lm3692x_leds_enable()` to prevent
regulator/GPIO leaks and an inconsistent enabled state
- TI LP8860: Fix a `device_node` reference leak in `lp8860_probe()` using
`__free(device_node)`
- Cleanups & Refactoring
- Core: Move `led_trigger_is_hw_controlled()` and `led_trigger_group` from `led-class.c`
into `led-triggers.c`
- Core: Replace conditional `set_bit()`/`clear_bit()` patterns with `assign_bit()` and
`__assign_bit()`
- Flash Class: Simplify `flash_fault_show()` using `sysfs_emit_at()` and omit the
trailing space
- Maintainers: Add Griffin Kroah-Hartman as an LED subsystem reviewer
- Intel SS4200: Fix a spelling typo in a comment
- ISSI IS31FL32xx: Convert DT-specific parsing helpers to generic device and fwnode
property APIs
- NXP PCA955x: Drop redundant intermediate platform data and allocate the LED array
using a flexible array member
- Qualcomm LPG: Convert LED and channel parsing to fwnode APIs and avoid leaving
`default_trigger` uninitialized
- Skyworks AAT1290: Use `ARRAY_SIZE()` when allocating `mm_current_scale` to match the
target pointer type for type-aware allocators
- STMicroelectronics ST1202: Introduce a `st1202_iled_max()` helper to unify channel
current ceiling calculations
- STMicroelectronics ST1202: Standardize variable and macro naming, fix helper spelling,
and use `u8` consistently instead of `uint8_t`
- Syscon: Convert from OF-specific property helpers to the generic device property and
fwnode APIs
- Device Tree Binding Updates
- Core: Allow PHY RX triggers (`phy[0-9]+rx`) in `linux,default-trigger`
- Core: Standardize example indentation across multiple LED and backlight binding
schemas
- Analog Devices LTC3208: Document the LTC3208 multi-display LED driver
- LaCie netxbig: Convert LED bindings to DT schema
- Motorola CPCAP: Convert LED bindings to DT schemaLEDs for v7.4
- New Support & Features
- Core: Add `led_trigger_notify_hw_control_changed()` to allow drivers to notify the
core of autonomous hardware control transitions
- Core: Add the `hw_offloaded()` trigger callback and `trigger_may_offload_to_hw` sysfs
attribute to expose hardware-offloaded triggers
- Netdev Trigger: Implement the `hw_offloaded()` callback to report hardware control
state to the LED core
- Analog Devices LTC3208: Add support for the LTC3208 7-channel multi-display I2C LED
driver
- ChromeOS EC: Implement the `hw_offloaded()` callback for the `chromeos-auto` trigger
- CZ.NIC Turris Omnia: Implement the `hw_offloaded()` callback and declare `omnia-mcu`
as a hardware control trigger
- STMicroelectronics ST1202: Add hardware-accelerated blink support via `blink_set()`
- Improvements & Fixes
- Class: Always hold the `led_access` mutex in `brightness_show()` to avoid exposing
transient registration states
- Class: Deactivate active hardware control triggers when writing to the `brightness`
sysfs attribute
- Core: Enforce strict validation in `led_trigger_is_hw_controlled()` and warn on legacy
fallback paths
- Flash Class: Initialize the fault variable in `flash_fault_show()` to prevent
undefined behavior when callbacks perform bitwise ORs
- Kinetic KTD2692: Pass the driver context directly to `regulator_disable_action()` to
prevent a NULL pointer dereference during error unwinding
- Maxim MAX77705: Use `fwnode_for_each_child_node_scoped()` in `max77705_add_led()` to
prevent child node reference leaks on error paths
- NXP PCA9532: Check the return value of `i2c_smbus_read_byte_data()` in
`pca9532_getled()` to avoid integer underflow on read errors
- Qualcomm WLED: Fix a NULL pointer dereference in `wled_remove()` by setting platform
driver data in `wled_probe()`
- Qualcomm WLED: Fix the WLED3 brightness register stride to prevent consecutive string
writes from overlapping
- Qualcomm WLED: Read back the hardware-programmed brightness at probe, expose it via
`get_brightness()`, and prevent unbalanced OVP IRQ enabling
- STMicroelectronics ST1202: Clear unused PWM pattern slots in `pattern_set()` and
`blink_set()` to prevent unintended output when sharing the global sequencer
- STMicroelectronics ST1202: Program and cap the channel current according to
`max_brightness` across brightness, blink, and hardware pattern modes, and scale
pattern brightness to the 12-bit PWM range
- STMicroelectronics ST1202: Retain a reference to each child LED firmware node for the
lifetime of the device
- STMicroelectronics ST1202: Use only the blocking `brightness_set_blocking()` callback
to avoid sleeping in atomic context during I2C transfers
- TI LM3692x: Check the final register write in `lm3692x_leds_enable()` to prevent
regulator/GPIO leaks and an inconsistent enabled state
- TI LP8860: Fix a `device_node` reference leak in `lp8860_probe()` using
`__free(device_node)`
- Cleanups & Refactoring
- Core: Move `led_trigger_is_hw_controlled()` and `led_trigger_group` from `led-class.c`
into `led-triggers.c`
- Core: Replace conditional `set_bit()`/`clear_bit()` patterns with `assign_bit()` and
`__assign_bit()`
- Flash Class: Simplify `flash_fault_show()` using `sysfs_emit_at()` and omit the
trailing space
- Maintainers: Add Griffin Kroah-Hartman as an LED subsystem reviewer
- Intel SS4200: Fix a spelling typo in a comment
- ISSI IS31FL32xx: Convert DT-specific parsing helpers to generic device and fwnode
property APIs
- NXP PCA955x: Drop redundant intermediate platform data and allocate the LED array
using a flexible array member
- Qualcomm LPG: Convert LED and channel parsing to fwnode APIs and avoid leaving
`default_trigger` uninitialized
- Skyworks AAT1290: Use `ARRAY_SIZE()` when allocating `mm_current_scale` to match the
target pointer type for type-aware allocators
- STMicroelectronics ST1202: Introduce a `st1202_iled_max()` helper to unify channel
current ceiling calculations
- STMicroelectronics ST1202: Standardize variable and macro naming, fix helper spelling,
and use `u8` consistently instead of `uint8_t`
- Syscon: Convert from OF-specific property helpers to the generic device property and
fwnode APIs
- Device Tree Binding Updates
- Core: Allow PHY RX triggers (`phy[0-9]+rx`) in `linux,default-trigger`
- Core: Standardize example indentation across multiple LED and backlight binding
schemas
- Analog Devices LTC3208: Document the LTC3208 multi-display LED driver
- LaCie netxbig: Convert LED bindings to DT schema
- Motorola CPCAP: Convert LED bindings to DT schema
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Merge tag 'leds-next-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds
Pull LED updates from Lee Jones:
"New Support & Features:
- Core: Add `led_trigger_notify_hw_control_changed()` to allow
drivers to notify the core of autonomous hardware control
transitions
- Core: Add the `hw_offloaded()` trigger callback and
`trigger_may_offload_to_hw` sysfs attribute to expose
hardware-offloaded triggers
- Netdev Trigger: Implement the `hw_offloaded()` callback to report
hardware control state to the LED core
- Analog Devices LTC3208: Add support for the LTC3208 7-channel
multi-display I2C LED driver
- ChromeOS EC: Implement the `hw_offloaded()` callback for the
`chromeos-auto` trigger
- CZ.NIC Turris Omnia: Implement the `hw_offloaded()` callback and
declare `omnia-mcu` as a hardware control trigger
- STMicroelectronics ST1202: Add hardware-accelerated blink support
via `blink_set()`
Improvements & Fixes:
- Class: Always hold the `led_access` mutex in `brightness_show()` to
avoid exposing transient registration states
- Class: Deactivate active hardware control triggers when writing to
the `brightness` sysfs attribute
- Core: Enforce strict validation in `led_trigger_is_hw_controlled()`
and warn on legacy fallback paths
- Flash Class: Initialize the fault variable in `flash_fault_show()`
to prevent undefined behavior when callbacks perform bitwise ORs
- Kinetic KTD2692: Pass the driver context directly to
`regulator_disable_action()` to prevent a NULL pointer dereference
during error unwinding
- Maxim MAX77705: Use `fwnode_for_each_child_node_scoped()` in
`max77705_add_led()` to prevent child node reference leaks on error
paths
- NXP PCA9532: Check the return value of `i2c_smbus_read_byte_data()`
in `pca9532_getled()` to avoid integer underflow on read errors
- Qualcomm WLED: Fix a NULL pointer dereference in `wled_remove()` by
setting platform driver data in `wled_probe()`
- Qualcomm WLED: Fix the WLED3 brightness register stride to prevent
consecutive string writes from overlapping
- Qualcomm WLED: Read back the hardware-programmed brightness at
probe, expose it via `get_brightness()`, and prevent unbalanced OVP
IRQ enabling
- STMicroelectronics ST1202: Clear unused PWM pattern slots in
`pattern_set()` and `blink_set()` to prevent unintended output when
sharing the global sequencer
- STMicroelectronics ST1202: Program and cap the channel current
according to `max_brightness` across brightness, blink, and
hardware pattern modes, and scale pattern brightness to the 12-bit
PWM range
- STMicroelectronics ST1202: Retain a reference to each child LED
firmware node for the lifetime of the device
- STMicroelectronics ST1202: Use only the blocking
`brightness_set_blocking()` callback to avoid sleeping in atomic
context during I2C transfers
- TI LM3692x: Check the final register write in
`lm3692x_leds_enable()` to prevent regulator/GPIO leaks and an
inconsistent enabled state
- TI LP8860: Fix a `device_node` reference leak in `lp8860_probe()`
using `__free(device_node)`
Cleanups & Refactoring:
- Core: Move `led_trigger_is_hw_controlled()` and `led_trigger_group`
from `led-class.c` into `led-triggers.c`
- Core: Replace conditional `set_bit()`/`clear_bit()` patterns with
`assign_bit()` and `__assign_bit()`
- Flash Class: Simplify `flash_fault_show()` using `sysfs_emit_at()`
and omit the trailing space
- Maintainers: Add Griffin Kroah-Hartman as an LED subsystem reviewer
- Intel SS4200: Fix a spelling typo in a comment
- ISSI IS31FL32xx: Convert DT-specific parsing helpers to generic
device and fwnode property APIs
- NXP PCA955x: Drop redundant intermediate platform data and allocate
the LED array using a flexible array member
- Qualcomm LPG: Convert LED and channel parsing to fwnode APIs and
avoid leaving `default_trigger` uninitialized
- Skyworks AAT1290: Use `ARRAY_SIZE()` when allocating
`mm_current_scale` to match the target pointer type for type-aware
allocators
- STMicroelectronics ST1202: Introduce a `st1202_iled_max()` helper
to unify channel current ceiling calculations
- STMicroelectronics ST1202: Standardize variable and macro naming,
fix helper spelling, and use `u8` consistently instead of `uint8_t`
- Syscon: Convert from OF-specific property helpers to the generic
device property and fwnode APIs
Device Tree Binding Updates:
- Core: Allow PHY RX triggers (`phy[0-9]+rx`) in
`linux,default-trigger`
- Core: Standardize example indentation across multiple LED and
backlight binding schemas
- Analog Devices LTC3208: Document the LTC3208 multi-display LED
driver
- LaCie netxbig: Convert LED bindings to DT schema
- Motorola CPCAP: Convert LED bindings to DT schemaLEDs for v7.4"
* tag 'leds-next-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (49 commits)
dt-bindings: leds: lacie,netxbig-leds: Convert to DT schema
leds: pca955x: Drop platform data and allocate LEDs with the device
dt-bindings: leds: Use consistent indentation in the example
backlight: qcom-wled: Read back the programmed brightness at probe
backlight: qcom-wled: Fix unbalanced OVP IRQ enable at probe
backlight: qcom-wled: Fix WLED3 brightness register stride
backlight: qcom-wled: Fix NULL pointer dereference in wled_remove()
dt-bindings: leds: Allow PHY RX triggers
MAINTAINERS: Add myself as a LED SUBSYSTEM reviewer
leds: trigger: Add led_trigger_notify_hw_control_changed() interface
leds: trigger: Enforce strict checks in led_trigger_is_hw_controlled()
leds: trigger: netdev: Implement hw_offloaded() callback
leds: turris-omnia: Implement hw_offloaded() trigger callback and declare hw_control_trigger
leds: cros_ec: Implement hw_offloaded() trigger callback
leds: trigger: Add hw_offloaded() callback and provide trigger_may_offload_to_hw attribute
leds: trigger: Move led_trigger_group to the right place
leds: class: Remove hardware control trigger when writing brightness
leds: trigger: Move led_trigger_is_hw_controlled() to the right place
leds: class: Always protect brightness_show() with led_access
dt-bindings: leds: leds-cpcap: Convert to DT schema
...
|
||
|
Linus Torvalds
|
d857e1f3fa |
MFD for v7.4
- New Support & Features
- Cirrus Logic CS42L43: Add support for the CS42L44 variant
- Khadas MCU: Add support for the VIM4 MCU variant along with per-variant fan duty-cycle
levels and optional fan supply regulator support
- Maxim MAX77705: Add support for the PASS2 hardware revision
- MediaTek MT6397: Add AUXADC sub-device support for MT6397
- Motorola CPCAP: Support per-board sub-device compositions and add the Tegra20 Mot
composition
- ROHM BD73800: Add support for the BD73800 PMIC core, regulator, RTC, clock gate, and
GPIO sub-devices
- TI LM3533: Add VIN regulator supply support, configure initial backlight mapping mode
from Device Tree, and implement the `backlight_scale` property
- X-Powers AC200: Add support for the AC200 I2C mixed-signal companion IC
- Improvements & Fixes
- Cirrus Logic CS42L43: Synchronize SoundWire enumeration work in `remove()` before
devres cleanup begins
- Dialog DA903x: Manage IRQ work cancellation and sub-device removal via devres to
prevent use-after-free during teardown
- Dialog DA9150: Balance `enable_irq_wake()` with `disable_irq_wake()` during probe
failure and driver removal
- Intel LPSS: Add DMI quirks for Dell Latitude 5285 and 7275 to ignore ACPI resource
conflicts on the I2C4 controller
- Intel Quark I2C/GPIO: Manage the fixed-rate clock and its clkdev lookup with devres to
fix a resource leak on unbind
- Maxim MAX77705: Select `REGMAP_I2C` and `REGMAP_IRQ` in Kconfig to fix build errors
- Qualcomm WCD934x: Initialize the parent DMA mask to suppress "DMA mask not set"
warnings on child devices
- Qualcomm WCD934x: Pass the valid device pointer to `dev_err_probe()` on IRQ lookup
failure to avoid a NULL pointer dereference
- Rockchip RK8xx: Register the poweroff handler in the atomic `SYS_OFF_MODE_POWER_OFF`
phase so polling I2C transfers complete during shutdown
- ST-Ericsson AB8500: Use `devm_mfd_add_devices()` to prevent leaking child devices on
probe failure
- TI BQ257xx: Mark self-modifying BQ25792 configuration registers as volatile
- TI LM3533: Set `coherent_dma_mask` to zero to suppress "DMA mask not set" warnings
- TI TPS65217: Check for errors during IRQ initialization and masking, and manage IRQ
domain and wake teardown with devres
- TI TWL: Unregister the auxiliary platform device via a devres action on probe failure
and driver unbind
- Cleanups & Refactoring
- Core: Convert drivers from deprecated `SIMPLE_DEV_PM_OPS()` to
`DEFINE_SIMPLE_DEV_PM_OPS()` and `pm_sleep_ptr()`
- Core: Fix spelling mistakes in comments across various MFD drivers and headers
- Maintainers: Add ROHM BD73800 PMIC files under the ROHM PMIC entry
- Maintainers: Specify the `for-mfd-next` branch for the MFD and Syscon git trees
- Dialog DA9062: Use `DEFINE_RES_IRQ_NAMED()` for IRQ resource definitions
- Intel LPSS: Simplify DebugFS handling by dropping redundant error checks and
intermediate dentry variables, using octal permissions, and switching to
`debugfs_remove()`
- Khadas MCU: Convert MFD cell arrays to `const` and use `MFD_CELL_NAME()`
- ST-Ericsson AB8500: Fix a spelling typo in a comment
- TI LM3533: Convert from platform data to Device Tree bindings and pass only regmap and
light sensor presence to child devices
- TI LM3533: Remove driver-specific regmap wrappers, redundant pdata helpers, and
unnecessary `extern` qualifiers, and use `dev_groups` for sysfs attributes
- Wolfson WM831x: Fix a spelling typo in a comment
- Device Tree Binding Updates
- HiSilicon Hi6421 SPMI: Fix the compatible string to match `hisilicon,hi6421-spmi`
- MediaTek MT6357: Allow an `adc` child node
- MediaTek MT6360: Allow two-cell interrupt specifiers with trigger flags
- MediaTek MT6397: Document the `#sound-dai-cells` property
- MediaTek MT6397: Document the battery-backed NVMEM layout under the RTC child node
- MediaTek MT6397: Document the MT6323 PMIC EFUSE child node
- Motorola CPCAP: Convert MFD and power button bindings to DT schema and document the
Mapphone and Mot compositions
- Qualcomm SPMI PMIC: Document the PM4125 audio codec compatible
- Qualcomm SPMI PMIC: Document the PMAU0102 PMIC compatible
- Qualcomm TCSR: Document the MSM8952 TCSR compatible
- Rockchip RK805: Fold the pin controller binding into the RK805 PMIC DT schema
- ROHM BD73800: Document the BD73800 PMIC and its regulators
- ROHM PMIC: Factor out common pin properties into `rohm,pmic-pins.yaml` and reference
them across BD71815, BD71828, and BD72720 bindings
- ST-Ericsson AB8500: Document AB8500 and AB8505 buck converter regulators
- ST-Ericsson AB8500: Document codec audio graph ports, sound DAI cells, and analog
microphone wiring properties
- ST-Ericsson DB8500 PRCMU: Deprecate the `db8500-prcmu-regulators` child node and make
it optional
- Syscon: Document the Ambarella CV75 secure scratchpad compatible
- TI BQ25703A: Add the BQ25798 compatible with fallback to BQ25792
- TI Keystone: Convert Device State Control bindings to DT schema
- TI LM3533: Document the LM3533 LED controller, backlight, and indicator LED bindings
- TI LP3943: Convert MFD and PWM bindings to DT schema
- TI TPS61050: Convert bindings to DT schema
- TI TPS65086: Make the `regulators` child node optional
- TI TPS65910: Document `wakeup-source` and GPIO hog child nodes
- TI TWL6040: Convert bindings to DT schema and align property names with the driver
- X-Powers AC200: Document the AC200 mixed-signal companion IC
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Merge tag 'mfd-next-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"New Support & Features:
- Cirrus Logic CS42L43: Add support for the CS42L44 variant
- Khadas MCU: Add support for the VIM4 MCU variant along with
per-variant fan duty-cycle levels and optional fan supply regulator
support
- Maxim MAX77705: Add support for the PASS2 hardware revision
- MediaTek MT6397: Add AUXADC sub-device support for MT6397
- Motorola CPCAP: Support per-board sub-device compositions and add
the Tegra20 Mot composition
- ROHM BD73800: Add support for the BD73800 PMIC core, regulator,
RTC, clock gate, and GPIO sub-devices
- TI LM3533: Add VIN regulator supply support, configure initial
backlight mapping mode from Device Tree, and implement the
`backlight_scale` property
- X-Powers AC200: Add support for the AC200 I2C mixed-signal companion IC
Improvements & Fixes:
- Cirrus Logic CS42L43: Synchronize SoundWire enumeration work in
`remove()` before devres cleanup begins
- Dialog DA903x: Manage IRQ work cancellation and sub-device removal
via devres to prevent use-after-free during teardown
- Dialog DA9150: Balance `enable_irq_wake()` with
`disable_irq_wake()` during probe failure and driver removal
- Intel LPSS: Add DMI quirks for Dell Latitude 5285 and 7275 to
ignore ACPI resource conflicts on the I2C4 controller
- Intel Quark I2C/GPIO: Manage the fixed-rate clock and its clkdev
lookup with devres to fix a resource leak on unbind
- Maxim MAX77705: Select `REGMAP_I2C` and `REGMAP_IRQ` in Kconfig to
fix build errors
- Qualcomm WCD934x: Initialize the parent DMA mask to suppress "DMA
mask not set" warnings on child devices
- Qualcomm WCD934x: Pass the valid device pointer to
`dev_err_probe()` on IRQ lookup failure to avoid a NULL pointer
dereference
- Rockchip RK8xx: Register the poweroff handler in the atomic
`SYS_OFF_MODE_POWER_OFF` phase so polling I2C transfers complete
during shutdown
- ST-Ericsson AB8500: Use `devm_mfd_add_devices()` to prevent leaking
child devices on probe failure
- TI BQ257xx: Mark self-modifying BQ25792 configuration registers as
volatile
- TI LM3533: Set `coherent_dma_mask` to zero to suppress "DMA mask
not set" warnings
- TI TPS65217: Check for errors during IRQ initialization and
masking, and manage IRQ domain and wake teardown with devres
- TI TWL: Unregister the auxiliary platform device via a devres
action on probe failure and driver unbind
Cleanups & Refactoring
- Core: Convert drivers from deprecated `SIMPLE_DEV_PM_OPS()` to
`DEFINE_SIMPLE_DEV_PM_OPS()` and `pm_sleep_ptr()`
- Core: Fix spelling mistakes in comments across various MFD drivers
and headers
- Maintainers: Add ROHM BD73800 PMIC files under the ROHM PMIC entry
- Maintainers: Specify the `for-mfd-next` branch for the MFD and
Syscon git trees
- Dialog DA9062: Use `DEFINE_RES_IRQ_NAMED()` for IRQ resource
definitions
- Intel LPSS: Simplify DebugFS handling by dropping redundant error
checks and intermediate dentry variables, using octal permissions,
and switching to
`debugfs_remove()`
- Khadas MCU: Convert MFD cell arrays to `const` and use
`MFD_CELL_NAME()`
- ST-Ericsson AB8500: Fix a spelling typo in a comment
- TI LM3533: Convert from platform data to Device Tree bindings and
pass only regmap and light sensor presence to child devices
- TI LM3533: Remove driver-specific regmap wrappers, redundant pdata
helpers, and unnecessary `extern` qualifiers, and use `dev_groups`
for sysfs attributes
- Wolfson WM831x: Fix a spelling typo in a comment
Device Tree Binding Updates
- HiSilicon Hi6421 SPMI: Fix the compatible string to match
`hisilicon,hi6421-spmi`
- MediaTek MT6357: Allow an `adc` child node
- MediaTek MT6360: Allow two-cell interrupt specifiers with trigger
flags
- MediaTek MT6397: Document the `#sound-dai-cells` property
- MediaTek MT6397: Document the battery-backed NVMEM layout under the
RTC child node
- MediaTek MT6397: Document the MT6323 PMIC EFUSE child node
- Motorola CPCAP: Convert MFD and power button bindings to DT schema
and document the Mapphone and Mot compositions
- Qualcomm SPMI PMIC: Document the PM4125 audio codec compatible
- Qualcomm SPMI PMIC: Document the PMAU0102 PMIC compatible
- Qualcomm TCSR: Document the MSM8952 TCSR compatible
- Rockchip RK805: Fold the pin controller binding into the RK805 PMIC
DT schema
- ROHM BD73800: Document the BD73800 PMIC and its regulators
- ROHM PMIC: Factor out common pin properties into
`rohm,pmic-pins.yaml` and reference them across BD71815, BD71828,
and BD72720 bindings
- ST-Ericsson AB8500: Document AB8500 and AB8505 buck converter
regulators
- ST-Ericsson AB8500: Document codec audio graph ports, sound DAI
cells, and analog microphone wiring properties
- ST-Ericsson DB8500 PRCMU: Deprecate the `db8500-prcmu-regulators`
child node and make it optional
- Syscon: Document the Ambarella CV75 secure scratchpad compatible
- TI BQ25703A: Add the BQ25798 compatible with fallback to BQ25792
- TI Keystone: Convert Device State Control bindings to DT schema
- TI LM3533: Document the LM3533 LED controller, backlight, and
indicator LED bindings
- TI LP3943: Convert MFD and PWM bindings to DT schema
- TI TPS61050: Convert bindings to DT schema
- TI TPS65086: Make the `regulators` child node optional
- TI TPS65910: Document `wakeup-source` and GPIO hog child nodes
- TI TWL6040: Convert bindings to DT schema and align property names
with the driver
- X-Powers AC200: Document the AC200 mixed-signal companion IC"
* tag 'mfd-next-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (74 commits)
dt-bindings: mfd: db8500-prcmu: Deprecate EPOD regulators
dt-bindings: mfd: syscon: Add Ambarella CV75 secure scratchpad
dt-bindings: mfd: rockchip,rk805: Convert pinctrl to DT schema
mfd: intel-lpss: Add Dell Latitude 7275 to the resource conflict quirk
mfd: intel-lpss: Add resource conflict quirk for Dell Latitude 5285
mfd: tps65217: Use devres for IRQ domain and wake teardown
mfd: tps65217: Check return value when masking interrupt sources
mfd: tps65217: Fix NULL pointer dereference on IRQ init failure
dt-bindings: mfd: qcom,spmi-pmic: Add compatibles for pm4125-codec
mfd: bq257xx: Mark self-modifying BQ25792 registers volatile
dt-bindings: mfd: mediatek: mt6397: describe the RTC's nvmem layout
mfd: mt6397-core: Add mt6397 AUXADC support
mfd: max77705: Mark PASS2 revision as supported
mfd: ab8500: Fix child device leaks on probe failure
dt-bindings: mfd: Add MT6397 sound DAI cells
dt-bindings: mfd: mediatek: mt6397: Add mt6323 PMIC EFUSE
dt-bindings: mfd: hisilicon: Fix Hi6421 SPMI compatible
dt-bindings: mfd: ti,bq25703a: Expand to include BQ25798
dt-bindings: mfd: Allow MT6360 interrupt flags
dt-bindings: mfd: mediatek: Allow MT6357 ADC
...
|
||
|
Wang Haoran
|
01d1204582 |
fbdev: atmel_lcdfb: fix list_first_entry() on possibly empty modelist in probe
list_first_entry() does not return NULL on an empty list; it returns a bogus pointer computed by container_of() from the list head. atmel_lcdfb_probe() initializes info->modelist with INIT_LIST_HEAD() and later takes its first entry with list_first_entry(), assuming atmel_lcdfb_of_init() populated it. However, atmel_lcdfb_of_init() drops the return value of fb_add_videomode() — unlike every other fallible call in the same function — so if fb_add_videomode() fails (its internal kmalloc can return -ENOMEM under memory pressure or fault injection), the list stays empty while of_init() reports success. The probe path then dereferences the bogus pointer in fb_videomode_to_var(&info->var, &modelist->mode). Because the bogus pointer lands inside the contiguous fb_info allocation, this may not fault immediately; instead it silently reads adjacent memory as a struct fb_videomode and programs garbage timing parameters into the LCD controller. This was found by code audit; we do not have Atmel hardware to reproduce it. Fix this on two levels: check the return value of fb_add_videomode() in atmel_lcdfb_of_init() so the failure is propagated (root cause), and use list_first_entry_or_null() in atmel_lcdfb_probe() with a NULL check that fails probe gracefully with -EINVAL (defense in depth), consistent with the surrounding error handling which bails out to stop_clk. Reported-by: Wang Haoran <haoranwangsec@gmail.com> Reported-by: Li Ximo <lixicaicai@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Wang Haoran <haoranwangsec@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Thomas Zimmermann
|
d98fbdba7d |
vgacon: Implement struct consw.con_unblank
Implement con_unblank from struct consw with the VESA_NO_BLANKING case from vgacon_blank(). The new function is called vgacon_unblank(). Remove the duplicated code from vgacon_blank(). Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Thomas Zimmermann
|
aa121c4be2 |
sticon: Implement struct consw.con_unblank
Implement con_unblank from struct consw. The new function is called sticon_unblank(). Remove the related code from sticon_blank(). There is no display unblanking in sticon: only return true to redraw the console. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Thomas Zimmermann
|
5d1df7fae0 |
newport_con: Implement struct consw.con_unblank
Implement con_unblank from struct consw with the VESA_NO_BLANKING branch from newport_blank(). Remove that code from the blank helper. Both helpers, newport_blank() and newport_unbank(), clear or set a single flag in a hardware register. No further VESA DPMS blanking is supported. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Thomas Zimmermann
|
0cfbdd6e43 |
fbcon: Implement struct consw.con_unblank
Implement con_unblank from struct consw with the !blank branches from fbcon_blank(). The new function is called fbcon_unblank(). Remove the duplicated code from fbcon_blank(). Fbcon tracks fbdev blank state in par->blank_state using fbdev's FB_BLANK constants. In fbcon_unblank() the stored value is always FB_BLANK_UNBLANK. In fbcon_blank(), the new blank state is 1 + plus the VESA blank mode given in the parameter blank. fbcon_blank() now disables the cursor worker unconditionally. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Thomas Zimmermann
|
4b04dbc869 |
dummycon: Implement struct consw.con_unblank
Implement con_unblank from struct consw as a duplicate of con_blank. As dummycon does not do anything, the implementation only returns true or false to trigger a redraw (or not). Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Linus Torvalds
|
0dfc0090b9 |
fbdev fixes and cleanups for 7.4-rc1:
Fixes:
- core: initialize modelist in framebuffer_alloc()
- core: bitblit: fix glyph clipping when fbcon pans
- fbcon: restore font geometry if font rotation fails
- sh_mobile_lcdcfb: restore the per-overlay sysfs attributes
- udlfb: don't rebuild the mode list while the framebuffer is in use
- atmel_lcdfb: prevent FIFO work after removal
Cleanups:
- vt, fbcon, vgacon: cursor code rework & cleanups
- MAINTAINERS: name the deller/linux-fbdev for-next branch
- drop unused FB_IOMEM_HELPERS_DEFERRED Kconfig option
- acornfb: remove unused code
- atafb: fix sparse warnings and avoid casts
- sstfb: use managed PCI device enable
- gxt4500, kyro, nvidia: release write-combining handle on probe failure
- various drivers: typo fixes in comments
- various drivers: fix error path on fb_deferred_io_init() failure
- various drivers: use FB blanking constants instead of VESA constants
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Merge tag 'fbdev-for-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev updates from Helge Deller:
"A whole lot of small fixes all over many drivers, but the majority of
changes are related to code cleanups regarding the cursor handling in
vt and fbcon.
Fixes:
- core: initialize modelist in framebuffer_alloc()
- core: bitblit: fix glyph clipping when fbcon pans
- fbcon: restore font geometry if font rotation fails
- sh_mobile_lcdcfb: restore the per-overlay sysfs attributes
- udlfb: don't rebuild the mode list while the framebuffer is in use
- atmel_lcdfb: prevent FIFO work after removal
Cleanups:
- vt, fbcon, vgacon: cursor code rework & cleanups
- MAINTAINERS: name the deller/linux-fbdev for-next branch
- drop unused FB_IOMEM_HELPERS_DEFERRED Kconfig option
- acornfb: remove unused code
- atafb: fix sparse warnings and avoid casts
- sstfb: use managed PCI device enable
- gxt4500, kyro, nvidia: release write-combining handle on probe failure
- various drivers: typo fixes in comments
- various drivers: fix error path on fb_deferred_io_init() failure
- various drivers: use FB blanking constants instead of VESA constants"
* tag 'fbdev-for-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev: (53 commits)
fbdev: xilinxfb: Use FB blanking constants
fbdev: platinumfb: Use FB blanking constants
fbdev: sa1100fb: Remove comment on VESA DPMS modes
fbdev: i810fb: Use FB blanking constants
fbdev: au1100fb: Use FB blanking constants
fbcon: Retry rotated font allocation after failure
fbcon: Rebuild rotated font buffer on font change
fbcon: Include font geometry in the rotated font cache
fbdev: bitblit: Fix glyph clipping when fbcon pans
fbcon: Replace fbcon_fill_cursor_mask() with fbcon_cursor_glyph()
lib/fonts: Add font_glyph_cursor() helper
vgacon: Use vt_cursor_{start,end}()
vgacon: Remove trailing whitespaces
vt: Add cursor-size helpers
MAINTAINERS: name the deller/linux-fbdev for-next branch
fbdev: atafb: avoid cast when assigning buffer address pointer
fbdev: atafb: fix sparse warnings
fbdev: atyfb_base: fix typos in comments
fbdev: aty128fb: fix typos in comments
fbdev: mach64: fix typos in comments
...
|
||
|
Lorenzo Stoakes (ARM)
|
19458d015f |
fbdev: defio: assert FBINFO_VIRTFB, drop VM_IO, add VM_MIXEDMAP
Currently all drivers which use defio allocate system memory. All of them
also set FBINFO_VIRTFB, other than ssd1307fb, however this driver allocates
system RAM, so simply failed to set this flag when it ought to.
This patch sets FBINFO_VIRTFB on ssd1307fb probe, then drops setting VM_IO
in fb_deferred_io_mmap() and instead requires FBINFO_VIRTFB to be set,
erroring out with a kernel warning if not.
The logic requires a page from the driver and since commit
|
||
|
Baoquan He
|
5f0f758d36 |
fbdev: fsl-diu-fb: don't use GFP_DMA when calling dmam_alloc_coherent()
dmam_alloc_coherent() allocates the DMA buffer with the device's addressing limitation in mind; the DMA core picks the zone from the device's coherent DMA mask and ignores GFP_DMA passed by the caller. Remove the redundant GFP_DMA flag. Link: https://lore.kernel.org/20260903111836.1777265-6-hebaoquan@kylinos.cn Signed-off-by: Baoquan He <hebaoquan@kylinos.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Harry Yoo <harry@kernel.org> |
||
|
Linus Torvalds
|
5b0764a532 |
drm next for 7.4-rc1
rust:
- I/O tree shared with driver-core
- DMA tree shared with driver-core
- allow aux registration data closures to return covariant
sub-fields
- Implement Send and Sync for MapleTree
- add pci resource flags and IORESOURCE_MEM_64
drm/rust:
- add dma_fence abstraction
- init DRM registrations and their data in place
- drop unused flags argument to registration
vgaarb:
- rework API to pass a private ptr instead of pci device
sound:
- adapt to omapdrm changes
gem:
- add callback for handle count going to 0
gpusvm:
- share one HMM fault and keep single mappings inline
pagemap:
- Prevent CPU stalls during unbounded pagemap teardown
dma-fence:
- fix docs
vga_switcheroo:
- disconnect from fbcon
- update fbcon from within fbdev emulation
atomic:
- move DRM from state reset callbacks to atomic_create_state
- remove drm_simple_encoder_init
panic:
- split into core and helpers
buddy:
- improve dirty tracking
clients:
- improve vmap handling
- fbdev: Move helpers from drm_kms_helper.ko to drm_client_lib.ko
display:
- export HDMI SCDC status data via debugfs
- rework SCDC for better HDMI 2.0 support
- dp/mst: improve DPCD compliance
edid:
- parse AMD VSDB
- parse ALLM/VRR capabilities
- support detecting panel size
log:
- add drm_warn_ratelimited
sched:
- cleanup interface
- add missing locking
- fix run-queue cleanup
- fix locking
sysfb:
- remove obsolete quirk for Lenovo D330
- fix panel orientation for non-native display modes
- drop drm_class_device_register
colorop:
- provide DRM_COLOR_OP_FIXED_MATRIX
bridge:
- analogix: Support eDP lane mapping
- ti-sn65dsi83: Support LVDS Channel B on SN65DSI84
- Select DRM_PANEL_BRIDGE for various drivers that require it
- add chrontel ch7218a support
panel:
- panel-edp: Support MNE007QS3-F, TM140VDXP15, and KD116N36-30NB-A001
- samsung-s6d16d0: Use mipi_dsi_*_multi() functions
- support Ilitek ILI7836A OLED plus DT bindings
- support Novatek NT36532 plus DT bindings
- convert several drivers to managed cleanup
- fix Kconfig selections
- edp: Add support for BOE NV140FHM-T0A
- samsung: Share test-key helpers
- edp: Support CSOT MNE007QB1-1
- ebbg-ft8719: Fix MODULE_LICENSE() string; Improve initialization
- edp: NV140WU2-M70
- ilitek-ili9882t: Support Ilitek IL79600A plus DT bindings
- simple: Support Truly TFT320240-229-E plus DT bindings; Support BOE
DV215FHM-R01 plus DT bindings
- Refactor struct drm_panel to contain struct drm_bridge plus fallout in
various panel drivers
- Add support for BOE Novatek NT51021, Retroid Pocket 6,
Raydium RM69220 DDIC panels, Sharp LQ138P1JX61 eDP,
BOE NV140FHD-N43, AUO B140HAN04.0, AUO 0x0db3,
panels.
amdgpu:
- use AMD VSDB for freesync
- implement YUV-to-RGB with fixed-matrix colorop
- enable FRL for HDMI
- HDMI 2.1 freesync support
- HDMI 2.1 ALLM support
- HDMI 2.1 VRR support
- UALoE (UALink over Ethernet) support
- add syncobj_points to userq signal ioctl
- drop unused kunit tests
- NBIO/GC/MMHUB/SMU updates/fixes
- GPU spatial partitioning updates
- display kunit fixes
- userq fixes
- RGB quantization fixes
- DC RMCM refactor
- DP MST fixes
- USB4 fixes
- add new trace events
- Rework display instance handling
- stack frame size fixes for various compilers/configs
- VCN 4/5 reset fixes
- freesync updates
- cursor refactor
- Fix direct scanout alpha on some DRM_FORMATs
- Expand Mac reserved memory workaround
- Make runtime pm more fine grained
amdkfd:
- updates and fixes
- GC 10 CU occupancy support
radeon:
- eDP fix for DCE3.2 iMacs
xe:
- add drm_ras netlink error event support
- add memory page offlining support
- introduce error threshold to drm_ras
- fix stale GTT mappings on unmap
- reject page faults for non-page fault mode scratch VM
- enable CRI package and VRAM temperatures
- introduce cold reset recovery
- handle CRI+ power interval encoding
- VF migration for multi-queue
- handle exec queue teardown after hot unplug
- alerts and controller enabling modifications
- use IBCv3 on PTL
- VRAM health check
- report GT TDR and VM rebind faults using SIGID
- add multi_queue_active_lrca debugfs
- shrinker: Runtime PM reference for non-system memory
- guc: Add simple KLV decoder helpers
- debugfs: Expose per-engine idle status
- Keep walking on SVM eviction failure
- Nuke PTs only after unlinking contested VMAs
- limit sg segment size to PAGE_SIZE on Xen PV
- keep VF LMEM bar size low if no VFs
- CPU binds and ULLS on migration queue
- New PTL PCI ID
- Enable PXP for NVL-S
- Do not dma_fence_put zero fences in err_out path
- Refresh TTM LRU on SVM prefetch
- export device UID in sysfs
i915:
- rename GEN6_PCODE_DATA to match spec
- fix incorrect RCU teardown order
- fix potential UAF in command parsing
- avoid WARN splat during RPS boosting race
- use simpler min functions
- Fixes to make i915 work well with PREEMPT_RT
i915/display:
- Enable CMRR (Content Match Refresh Rate) in fixed-RR VRR path
- Switch DG2 MPLL to DPLL framework
- DP-HDMI PCON DSC fixes
- limit invalid joiner combinations
- CDCLK related fixes and refactor around PCODE integration
- Gate UHBR SST SDP splitting on sink caps
- add HDMI TMDS audio bandwidth check
- vswing/preemph override
- enable AS SDP Skip frames
- Handle negative configuration index on DP link caps for robustness
- Preparation for enabling SDR plane color pipeline
- An eDP quirk for HP Pavilion Plus
- Introduce PME (Power Management Event) support on display hotplug
- Handle VSC SDP revision 7 in unpack
msm:
- CI:
- Dropped sc7180 trogdor lazor from the CI
- Core:
- Fixed msm_ioremap for resources without a name
- Changed msm.separate_gpu_kms to default to auto selection
- GPU:
- Enable CLX (Current Limit eXtension) for gen8 to avoid
exceeding limits on CX/GX rails
- New GPUs: a830 (Pakala), a845 (Maili), a850 (Hawi),
x2-85 (Mahua)
- Fix VBIF halt mask on a306, which was preventing runpm
suspend
- Enable THP support for GEM buffers
- Add modparam to disable waiting on fences in shrinker
- Drop use of drm_prime_sg_to_page_array()
- a5xx: don't read the GPMU registers on GPUs without a GPMU
- a2xx/a3xx/a5xx: hangcheck progress detection
- a6xx: gmuwrapper runpm fix
- Calculate reported GMEM size based on active slices
- Split a6xx/a7xx/a8xx catalog
- DP:
- Picked up some preparation patches for the MST support
- Fixed reported status of the link training
- DPU:
- Fixed CRTC bandwidth computation
- Fixed DSC programming
- Fixed encoder disablement path
- DSI:
- Fixed VM leak in error path
- Indention fix
- MDP5:
- Added MSM8952 configuration
- Dropped incorrect cursor pipe on MSM8976/56
- HDMI:
- Small fixes
nouveau:
- improve runtime PM on R570 GSP firmware
- various fixes throughout the driver
- dispnv50: support 2.147 GHz pixel clock in GB20x
nova:
- add initial uapi concept
- add initial PRAMIN access support
- add GpuMm centralized memory manager
- add GPU VM and BAR1 support
- add GPU interrupts and GSP events support
- GSP messaging fixes
tyr:
- use bitfield!
- zero unsupported and newly added GPU info fields
- limit doorbell array to 17 entries
exynos:
- FIMD fixes
- Fix clock leak on resume error path.
- Fix Sparse warnings by adding missing __iomem annotation.
- VIDI cleanup
- Replace kmalloc() and copy_from_user() with memdup_user().
amdxdna:
- fix BO handling
- Support AIE2 rev 9
- Fix UAF access in scheduler fences
- Update workqueue interface
- expose busy time via fdinfo
ast:
- support 256-byte EDID
hyperv_drm:
- remove support for pre win10 hosts
komeda:
- fix GLB_CORE_ID usage
omap:
- report HDMI hotplug events to ASoC HDMI codec
panthor:
- provide gpu_cache_flush tracepoint
- improve dma_fence signalling latency
- improve locking
- export scheduling information via debugfs
- Validate user-space input against firmware limits
qaic:
- reject BOs that exceed maximum page count
- add missing include statements
verisilicon:
- fix hardware cursor offsets
vkms:
- implement YUV-to-RGB with fixed-matrix colorop
gma500:
- avoid unsupported ARGB formats in primary plane
hibmc:
- handle vblank interrupts correctly
ivpu:
- add DRM_IVPU_CAP_CMDQ_SET_PRIORITY
- support command-queue priority ioctl
- Simplify NULL-pointer handling in cleanup code
arcpgu:
- replace simple-display pipeline with regular atomic helpers
aspeed:
- replace simple-display pipeline with regular atomic helpers
gm12u320:
- replace simple-display pipeline with regular atomic helpers
imagination:
- various improvement to firmware interaction
- add job to pvr_job_submit_fw trace event
mali-dp:
- fix runtime PM leak
mcde:
- replace simple-display pipeline with regular atomic helpers
p111:
- replace simple-display pipeline with regular atomic helpers
- drop unsupported alpha formats from primary plane
rcar-du:
- support Renesas R-Car V4H DSC
- dsi: Support larger transfers with AXI memory
- Support RZ/G3L SoC
repaper:
- replace simple-display pipeline with regular atomic helpers
rockchip:
- dsi: improve PHY timings
ssd130x:
- support Solomon SSD1351 OLED plus DT bindings
- ssd133x: upgrade color format to RGB565
- ssd132x: Set correct hardware window when clearing screen
tve200:
- replace simple-display pipeline with regular atomic helpers
xen:
- replace simple-display pipeline with regular atomic helpers
v3d:
- improve job handling under perfmon
vc4:
- reliably reset V3D
- drop brcm,vc4-v3d compatible
virtio:
- fix damage handling
- Support ARGB8888 for virtio primary planes.
host1x:
- Support partitioning
imx:
- Replace simple-display with regular atomic helpers
mxsfb:
- Support bus formats plus DT bindings
tegra:
- improve syncobj handling on submit
panfrost:
- add Mali-G68 support
- improve GPU reset handling
rockchip:
- add HDMI 2.0 support to dw-hdmi-qp
- improve HPD handling
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Merge tag 'drm-next-2026-10-21' of https://gitlab.freedesktop.org/drm/kernel
Pull drm updates from Dave Airlie:
"Highlights:
- core: a lot of atomic refactoring in progress, panic got split into
a core/helpers model
- amdgpu: enables HDMI 2.1 FRL and other good things finally, UAlink
over Ethernet support
- xe: has a bunch of CRI support, ras error for bad vram, memory
offlining support.
- msm: enables a bunch more GPUs.
Otherwise it's a the usual mountain of stuff all over the place.
Details:
rust:
- I/O tree shared with driver-core
- DMA tree shared with driver-core
- allow aux registration data closures to return covariant sub-fields
- Implement Send and Sync for MapleTree
- add pci resource flags and IORESOURCE_MEM_64
drm/rust:
- add dma_fence abstraction
- init DRM registrations and their data in place
- drop unused flags argument to registration
vgaarb:
- rework API to pass a private ptr instead of pci device
sound:
- adapt to omapdrm changes
gem:
- add callback for handle count going to 0
gpusvm:
- share one HMM fault and keep single mappings inline
pagemap:
- Prevent CPU stalls during unbounded pagemap teardown
dma-fence:
- fix docs
vga_switcheroo:
- disconnect from fbcon
- update fbcon from within fbdev emulation
atomic:
- move DRM from state reset callbacks to atomic_create_state
- remove drm_simple_encoder_init
panic:
- split into core and helpers
buddy:
- improve dirty tracking
clients:
- improve vmap handling
- fbdev: Move helpers from drm_kms_helper.ko to drm_client_lib.ko
display:
- export HDMI SCDC status data via debugfs
- rework SCDC for better HDMI 2.0 support
- dp/mst: improve DPCD compliance
edid:
- parse AMD VSDB
- parse ALLM/VRR capabilities
- support detecting panel size
log:
- add drm_warn_ratelimited
sched:
- cleanup interface
- add missing locking
- fix run-queue cleanup
- fix locking
sysfb:
- remove obsolete quirk for Lenovo D330
- fix panel orientation for non-native display modes
- drop drm_class_device_register
colorop:
- provide DRM_COLOR_OP_FIXED_MATRIX
bridge:
- analogix: Support eDP lane mapping
- ti-sn65dsi83: Support LVDS Channel B on SN65DSI84
- Select DRM_PANEL_BRIDGE for various drivers that require it
- add chrontel ch7218a support
panel:
- panel-edp: Support MNE007QS3-F, TM140VDXP15, and KD116N36-30NB-A001
- samsung-s6d16d0: Use mipi_dsi_*_multi() functions
- support Ilitek ILI7836A OLED plus DT bindings
- support Novatek NT36532 plus DT bindings
- convert several drivers to managed cleanup
- fix Kconfig selections
- edp:
- Add support for BOE NV140FHM-T0A
- Support CSOT MNE007QB1-1
- NV140WU2-M70
- ebbg-ft8719: Fix MODULE_LICENSE() string; Improve initialization
- samsung: Share test-key helpers
- ilitek-ili9882t: Support Ilitek IL79600A plus DT bindings
- simple: Support Truly TFT320240-229-E plus DT bindings; Support BOE
DV215FHM-R01 plus DT bindings
- Refactor struct drm_panel to contain struct drm_bridge plus fallout
in various panel drivers
- Add support for BOE Novatek NT51021, Retroid Pocket 6, Raydium
RM69220 DDIC panels, Sharp LQ138P1JX61 eDP, BOE NV140FHD-N43, AUO
B140HAN04.0, AUO 0x0db3, panels.
amdgpu:
- use AMD VSDB for freesync
- implement YUV-to-RGB with fixed-matrix colorop
- enable FRL for HDMI
- HDMI 2.1 freesync support
- HDMI 2.1 ALLM support
- HDMI 2.1 VRR support
- UALoE (UALink over Ethernet) support
- add syncobj_points to userq signal ioctl
- drop unused kunit tests
- NBIO/GC/MMHUB/SMU updates/fixes
- GPU spatial partitioning updates
- display kunit fixes
- userq fixes
- RGB quantization fixes
- DC RMCM refactor
- DP MST fixes
- USB4 fixes
- add new trace events
- Rework display instance handling
- stack frame size fixes for various compilers/configs
- VCN 4/5 reset fixes
- freesync updates
- cursor refactor
- Fix direct scanout alpha on some DRM_FORMATs
- Expand Mac reserved memory workaround
- Make runtime pm more fine grained
amdkfd:
- updates and fixes
- GC 10 CU occupancy support
radeon:
- eDP fix for DCE3.2 iMacs
xe:
- add drm_ras netlink error event support
- add memory page offlining support
- introduce error threshold to drm_ras
- fix stale GTT mappings on unmap
- reject page faults for non-page fault mode scratch VM
- enable CRI package and VRAM temperatures
- introduce cold reset recovery
- handle CRI+ power interval encoding
- VF migration for multi-queue
- handle exec queue teardown after hot unplug
- alerts and controller enabling modifications
- use IBCv3 on PTL
- VRAM health check
- report GT TDR and VM rebind faults using SIGID
- add multi_queue_active_lrca debugfs
- shrinker: Runtime PM reference for non-system memory
- guc: Add simple KLV decoder helpers
- debugfs: Expose per-engine idle status
- Keep walking on SVM eviction failure
- Nuke PTs only after unlinking contested VMAs
- limit sg segment size to PAGE_SIZE on Xen PV
- keep VF LMEM bar size low if no VFs
- CPU binds and ULLS on migration queue
- New PTL PCI ID
- Enable PXP for NVL-S
- Do not dma_fence_put zero fences in err_out path
- Refresh TTM LRU on SVM prefetch
- export device UID in sysfs
i915:
- rename GEN6_PCODE_DATA to match spec
- fix incorrect RCU teardown order
- fix potential UAF in command parsing
- avoid WARN splat during RPS boosting race
- use simpler min functions
- Fixes to make i915 work well with PREEMPT_RT
i915/display:
- Enable CMRR (Content Match Refresh Rate) in fixed-RR VRR path
- Switch DG2 MPLL to DPLL framework
- DP-HDMI PCON DSC fixes
- limit invalid joiner combinations
- CDCLK related fixes and refactor around PCODE integration
- Gate UHBR SST SDP splitting on sink caps
- add HDMI TMDS audio bandwidth check
- vswing/preemph override
- enable AS SDP Skip frames
- Handle negative configuration index on DP link caps for robustness
- Preparation for enabling SDR plane color pipeline
- An eDP quirk for HP Pavilion Plus
- Introduce PME (Power Management Event) support on display hotplug
- Handle VSC SDP revision 7 in unpack
msm:
- CI:
- Dropped sc7180 trogdor lazor from the CI
- Core:
- Fixed msm_ioremap for resources without a name
- Changed msm.separate_gpu_kms to default to auto selection
- GPU:
- Enable CLX (Current Limit eXtension) for gen8 to avoid exceeding
limits on CX/GX rails
- New GPUs: a830 (Pakala), a845 (Maili), a850 (Hawi), x2-85
(Mahua)
- Fix VBIF halt mask on a306, which was preventing runpm suspend
- Enable THP support for GEM buffers
- Add modparam to disable waiting on fences in shrinker
- Drop use of drm_prime_sg_to_page_array()
- a5xx: don't read the GPMU registers on GPUs without a GPMU
- a2xx/a3xx/a5xx: hangcheck progress detection
- a6xx: gmuwrapper runpm fix
- Calculate reported GMEM size based on active slices
- Split a6xx/a7xx/a8xx catalog
- DP:
- Picked up some preparation patches for the MST support
- Fixed reported status of the link training
- DPU:
- Fixed CRTC bandwidth computation
- Fixed DSC programming
- Fixed encoder disablement path
- DSI:
- Fixed VM leak in error path
- Indention fix
- MDP5:
- Added MSM8952 configuration
- Dropped incorrect cursor pipe on MSM8976/56
- HDMI:
- Small fixes
nouveau:
- improve runtime PM on R570 GSP firmware
- various fixes throughout the driver
- dispnv50: support 2.147 GHz pixel clock in GB20x
nova:
- add initial uapi concept
- add initial PRAMIN access support
- add GpuMm centralized memory manager
- add GPU VM and BAR1 support
- add GPU interrupts and GSP events support
- GSP messaging fixes
tyr:
- use bitfield!
- zero unsupported and newly added GPU info fields
- limit doorbell array to 17 entries
exynos:
- FIMD fixes
- Fix clock leak on resume error path
- Fix Sparse warnings by adding missing __iomem annotation
- VIDI cleanup
- Replace kmalloc() and copy_from_user() with memdup_user()
amdxdna:
- fix BO handling
- Support AIE2 rev 9
- Fix UAF access in scheduler fences
- Update workqueue interface
- expose busy time via fdinfo
ast:
- support 256-byte EDID
hyperv_drm:
- remove support for pre win10 hosts
komeda:
- fix GLB_CORE_ID usage
omap:
- report HDMI hotplug events to ASoC HDMI codec
panthor:
- provide gpu_cache_flush tracepoint
- improve dma_fence signalling latency
- improve locking
- export scheduling information via debugfs
- Validate user-space input against firmware limits
qaic:
- reject BOs that exceed maximum page count
- add missing include statements
verisilicon:
- fix hardware cursor offsets
vkms:
- implement YUV-to-RGB with fixed-matrix colorop
gma500:
- avoid unsupported ARGB formats in primary plane
hibmc:
- handle vblank interrupts correctly
ivpu:
- add DRM_IVPU_CAP_CMDQ_SET_PRIORITY
- support command-queue priority ioctl
- Simplify NULL-pointer handling in cleanup code
arcpgu:
- replace simple-display pipeline with regular atomic helpers
aspeed:
- replace simple-display pipeline with regular atomic helpers
gm12u320:
- replace simple-display pipeline with regular atomic helpers
imagination:
- various improvement to firmware interaction
- add job to pvr_job_submit_fw trace event
mali-dp:
- fix runtime PM leak
mcde:
- replace simple-display pipeline with regular atomic helpers
p111:
- replace simple-display pipeline with regular atomic helpers
- drop unsupported alpha formats from primary plane
rcar-du:
- support Renesas R-Car V4H DSC
- dsi: Support larger transfers with AXI memory
- Support RZ/G3L SoC
repaper:
- replace simple-display pipeline with regular atomic helpers
rockchip:
- dsi: improve PHY timings
ssd130x:
- support Solomon SSD1351 OLED plus DT bindings
- ssd133x: upgrade color format to RGB565
- ssd132x: Set correct hardware window when clearing screen
tve200:
- replace simple-display pipeline with regular atomic helpers
xen:
- replace simple-display pipeline with regular atomic helpers
v3d:
- improve job handling under perfmon
vc4:
- reliably reset V3D
- drop brcm,vc4-v3d compatible
virtio:
- fix damage handling
- Support ARGB8888 for virtio primary planes.
host1x:
- Support partitioning
imx:
- Replace simple-display with regular atomic helpers
mxsfb:
- Support bus formats plus DT bindings
tegra:
- improve syncobj handling on submit
panfrost:
- add Mali-G68 support
- improve GPU reset handling
rockchip:
- add HDMI 2.0 support to dw-hdmi-qp
- improve HPD handling"
* tag 'drm-next-2026-10-21' of https://gitlab.freedesktop.org/drm/kernel: (2324 commits)
drm/adp: Switch to drm_atomic_helper_connector_create_state
drm/malidp: Convert to atomic_create_state
drm/vc4: Switch to drm_atomic_helper_connector_create_state
drm/sysfb: Switch to drm_atomic_helper_connector_create_state
drm/solomon: ssd130x: Switch to drm_atomic_helper_connector_create_state
drm/imx: ipuv3: Switch to drm_atomic_helper_connector_create_state
drm/hyperv: Switch to drm_atomic_helper_connector_create_state
drm/bridge: megachips: Switch to drm_atomic_helper_connector_create_state
drm/bridge: lontium-lt8912b: Switch to drm_atomic_helper_connector_create_state
drm/arm: komeda: Switch to drm_atomic_helper_connector_create_state
drm/appletbdrm: Fix incorrect error message on encoder attach failure
drm/sun4i: hdmi: Convert to drmm_connector_hdmi_init()
drm/rockchip: rk3066_hdmi: Advertise HDMI 1.4 capabilities
drm/bridge: lontium-lt9611: Advertise HDMI 1.4 capabilities
drm/bridge: ite-it66121: Advertise HDMI 1.2 capabilities
drm/bridge: ite-it6263: Advertise HDMI 1.3 capabilities
drm/bridge: ite-it6263: Drop redundant .mode_valid hook
drm/bridge: inno-hdmi: Advertise HDMI 1.2 capabilities
drm/bridge: adv7511: Advertise HDMI 1.2 capabilities
drm/sched: Document entity->stopped is protected by entity->lock
...
|
||
|
Linus Torvalds
|
c0e8d30137 |
Modules changes for 7.4-rc1
- Ignore local labels and mapping symbols during module load These symbols were already ignored during kallsyms address-to-symbol lookups. Filter them out earlier during module loading to reduce lookup overhead and prevent them from appearing in /proc/kallsyms. - Fix potentially incorrect access of SetOnce<T> when setting Rust module parameters. - Fix a potential read of an uninitialized count when printing taint information for unloaded modules. - Allocate the kmod argument array using kmalloc_array() in preparation for conversion to type-aware allocators. - Clean up includes in linux/kmod.h Add explicit includes of linux/umh.h to files that use usermode helpers. Then clean up the #include list in linux/kmod.h, notably removing the compatibility linux/umh.h include. - Remove the error-injection.h include from linux/module.h Add explicit includes of linux/error-injection.h to files that use the ALLOW_ERROR_INJECTION() macro and currently rely on it being provided indirectly via linux/module.h. Then remove the unnecessary linux/error-injection.h include from linux/module.h. - Replace __MODULE_STRING() with __stringify() in various drivers in preparation for removing the former macro. The changes to several #include lists have been reported to cause trivial conflicts in linux-next with the drm, drm-xe, and usb trees. -----BEGIN PGP SIGNATURE----- iQFkBAABCABOFiEEIduBR9MnFA82q/jtumpXJwqY6poFAmrWJvAbFIAAAAAABAAO bWFudTIsMi41KzEuMTIsMiwyFBxwZXRyLnBhdmx1QHN1c2UuY29tAAoJELpqVycK mOqalOYH/RpwszqX+OuRhf3G9IDokSZFZyiAJLZan3H7jZNb9VBVLYmTTRYF/UE4 uXKeGAUXZOaUdhVjQi/1LqX3NbDO1NfUCM9sbk3EPal0L6ILbcmkBecXu9JXHxvB 6sfEAdTMdAn28613wcnbjmdGfEkgHuDZqZeld4dIAtZ+GvLzFz0D+o0zkigCnT4I faKU9GLIHJe2Cn5FB40b1+M+IGY9t6bl2+WxVc1rd9oSZXfr8ptE7NPllhiOmOhD /aMVpeSlXzo8DYxIhvtZGwDh5NrJglPFdFRXYuHUDLxkWCCFtXRt//LtWv3EpKqp dgQUH5QAO5E/+OuycHFLaXOUiKVS0P4= =bCLk -----END PGP SIGNATURE----- Merge tag 'modules-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux Pull module updates from Petr Pavlu: - Ignore local labels and mapping symbols during module load These symbols were already ignored during kallsyms address-to-symbol lookups. Filter them out earlier during module loading to reduce lookup overhead and prevent them from appearing in /proc/kallsyms. - Fix potentially incorrect access of SetOnce<T> when setting Rust module parameters. - Fix a potential read of an uninitialized count when printing taint information for unloaded modules. - Allocate the kmod argument array using kmalloc_array() in preparation for conversion to type-aware allocators. - Clean up includes in linux/kmod.h Add explicit includes of linux/umh.h to files that use usermode helpers. Then clean up the #include list in linux/kmod.h, notably removing the compatibility linux/umh.h include. - Remove the error-injection.h include from linux/module.h Add explicit includes of linux/error-injection.h to files that use the ALLOW_ERROR_INJECTION() macro and currently rely on it being provided indirectly via linux/module.h. Then remove the unnecessary linux/error-injection.h include from linux/module.h. - Replace __MODULE_STRING() with __stringify() in various drivers in preparation for removing the former macro. * tag 'modules-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux: drivers: Replace __MODULE_STRING() with __stringify() module: Fix uninitialized count read of unloaded taint tracking record rust: module_param: Fix potentially incorrect access of `SetOnce<T>` module: Remove the error-injection.h include from linux/module.h drm/xe: Include error-injection.h for ALLOW_ERROR_INJECTION() drm/i915: Include error-injection.h for ALLOW_ERROR_INJECTION() syscalls: Include error-injection.h for ALLOW_ERROR_INJECTION() net: Include error-injection.h for ALLOW_ERROR_INJECTION() block: Include error-injection.h for ALLOW_ERROR_INJECTION() module: Bring includes in linux/kmod.h up to date time/jiffies: Include linux/sysctl.h for proc_int_u2k_conv_uop(), ... umh, treewide: Explicitly include linux/umh.h where needed modules/kmod: Allocate argv with kmalloc_array() module/kallsyms: Ignore local labels and mapping symbols during module load module/kallsyms: Refactor current symbol filtering into is_core_symbol() module/kallsyms: Rename is_mapping_symbol() to is_ignored_kernel_symbol() |
||
|
Thomas Zimmermann
|
61e1a43ca5 |
fbdev: xilinxfb: Use FB blanking constants
Fbdev and its drivers use FB_BLANK constants for controlling the display's blanking state. Semantics differ to similar VESA blanking constants. Replace the VESA constant in xilinxfb with FB_BLANK. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Thomas Zimmermann
|
2439733aa5 |
fbdev: platinumfb: Use FB blanking constants
Fbdev and its drivers use FB_BLANK constants for controlling the display's blanking state. Semantics differ to similar VESA blanking constants. Replace the VESA constants with FB_BLANK in platinumfb. The VESA constants can be interpreted bitwise, while the FB_BLANK constants can not. Therefore turn the bit tests in an if-else sequence that handles the individual cases. By default, the display is unblanked. The modified code is within a comment block, so it will not run. I still changed it to keep the driver up to standard. This might also resolve the nearby TODO comment on incorrect hardware blanking. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Thomas Zimmermann
|
a1d236fee3 |
fbdev: sa1100fb: Remove comment on VESA DPMS modes
Fbdev and its drivers use FB_BLANK constants for controlling the display's blanking state. Semantics differ to similar VESA blanking constants. Remove the comment on VESA constants from sa1100fb. It's misleading at best, as the driver should never use the VESA constants for blanking. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Thomas Zimmermann
|
baedbacdc8 |
fbdev: i810fb: Use FB blanking constants
Fbdev and its drivers use FB_BLANK constants for controlling the display's blanking state. Semantics differ to similar VESA blanking constants. Replace the VESA constant in i810fb with FB_BLANK. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Thomas Zimmermann
|
8f6dd8f15e |
fbdev: au1100fb: Use FB blanking constants
Fbdev and its drivers use FB_BLANK constants for controlling the display's blanking state. Semantics differ to similar VESA blanking constants. Replace the VESA constants in au1100fb with FB_BLANK. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Yao Yiqi
|
7935db1a4a |
fbcon: Retry rotated font allocation after failure
fbcon_rotate_font() records the font, its geometry and the rotation in
par->rotated before calling font_data_rotate(). If the allocation
fails, the error path clears par->rotated.buf, but the recorded key
already looks up to date, so the next call takes the early-out and
never retries. The rotated putcs/cursor ops keep returning early on
the NULL buffer, and the console stays blank even after memory is
available again.
Also test par->rotated.buf in the early-out, so a failed allocation
is retried on the next call: at the next fbcon_switch(),
fbcon_modechanged() or font change.
Fixes:
|
||
|
Yao Yiqi
|
e4b6b865d4 |
fbcon: Rebuild rotated font buffer on font change
fbcon_rotate_font() caches a rotated copy of the console font in
par->rotated.buf. The buffer is sized from the font's width, height
and charcount, and is rebuilt in fbcon_init(), fbcon_switch() and
fbcon_modechanged(), but not in fbcon_do_set_font().
When the font is changed through KDFONTOP, the new geometry is
installed and vc_resize() redraws before the buffer is rebuilt. The
rotated putcs/cursor ops then index the old buffer with the new cell
size; KASAN reports a slab-out-of-bounds read in soft_cursor().
Rebuild the buffer for the visible console before the redraw, as the
other callers do: select the console's blitting state with
set_blitting_type() (which also uploads the new font's map on
tile-blitting hardware), then rebuild. Background consoles keep
their rebuild at fbcon_switch() time, as the buffer is shared per
framebuffer and must not be updated for a console that is not being
displayed.
To ensure a correct rollback when the rebuild or the following
vc_resize() fails, save the rotated font state, clear it before
rebuilding, and restore it in the error path of
fbcon_do_set_font().
Fixes:
|
||
|
Yao Yiqi
|
10463bcd43 |
fbcon: Include font geometry in the rotated font cache
fbcon_rotate_font() caches a rotated copy of the console font and skips the rebuild when the fontdata pointer and the rotation match. Raw font data carries no geometry, though: width, height and charcount live in vc->vc_font. fbcon_set_font() deduplicates uploads by byte equality, so the same bytes re-uploaded with different dimensions keep the fontdata pointer while the geometry changes, and the early-out skips the rebuild. The rotated cell size depends on the geometry (rotation swaps width and height), so the stale buffer is indexed with the new cell size. Re-uploading a 4x16 font as 16x8 on a CW-rotated console, for example, doubles the rotated cell size and reads past the end of the old buffer. Record the geometry the buffer was built from and compare it in the early-out. The pointer-only key used to be backed by an explicit width check in the deduplication, which commit |
||
|
Tingjie Zhong
|
06fccf8406 |
fbdev: bitblit: Fix glyph clipping when fbcon pans
Commit |
||
|
Thomas Zimmermann
|
54ddfe9a7e |
fbcon: Replace fbcon_fill_cursor_mask() with fbcon_cursor_glyph()
The kernel's font library provides font_glyph_cursor() to create cursor glyphs. Replace fbcon's fbcon_fill_cursor_mask() with a new helper that uses font_glyph_cursor(). The cursor shapes remain mostly unchanged. The only exception is in underline cursors for fonts with a size larger than 10. The underlining dash is now one pixel closer to the font-glyph data, so that the cursor looks less detached. This follows the style used by vgacon. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Helge Deller <deller@gmx.de> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Thomas Zimmermann
|
5c02696d15 |
vgacon: Use vt_cursor_{start,end}()
Replace vgacon's custom cursor metrics with the shared helpers vc_cursor_start() and vc_font_cursor_end(). Note that the _end() function returns the index of the scanline below the cursor, while VGA hardware expects the cursor's final scanline. Hence vgacon subtracts 1 from the end value. The cursor shapes remain mostly unchanged, except that non-underline cursors now also use the glyph's top-most and bottom-most scanline. This follows the style used by fbcon. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Helge Deller <deller@gmx.de> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Thomas Zimmermann
|
64527782d4 |
vgacon: Remove trailing whitespaces
Fix coding style. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Helge Deller <deller@gmx.de> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
David Heidelberg
|
eacfbe6f97 |
backlight: qcom-wled: Read back the programmed brightness at probe
Since the previous change wled_probe() seeds wled->brightness from MOD_EN, but with default-brightness rather than the level the hardware is actually driving, so a backlight left lit by the bootloader still visibly steps on the first update, and actual_brightness reports the last value written rather than what the panel shows. Add wled_read_brightness(), which returns 0 when MOD_EN is clear and otherwise reads the brightness register the matching wledN_set_brightness() writes: the first enabled string on WLED3 and WLED4, the selected modulator on WLED5. Use it to seed both wled->brightness and the initial backlight property, and expose it as backlight_ops.get_brightness so that actual_brightness reflects the hardware too. A module that is enabled with the brightness registers at zero, which wled4_setup() and wled_auto_string_detection() can leave behind on a cold boot, now reads back as off. The OVP interrupt is then armed by the first brightness update rather than from probe, which is what happens on every other board where the module starts out disabled. Suggested-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Assisted-by: LLM Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Daniel Thompson (RISCstar) <danielt@kernel.org> Link: https://patch.msgid.link/20260921-qcom-wled-backlight-v4-4-bab8c7ef73cb@ixit.cz Signed-off-by: Lee Jones <lee@kernel.org> |
||
|
David Heidelberg
|
5eda6b5146 |
backlight: qcom-wled: Fix unbalanced OVP IRQ enable at probe
wled_configure_ovp_irq() derives the initial state of the OVP interrupt
from the hardware:
/* Keep OVP irq disabled until module is enabled */
if (!(val & WLED3_CTRL_REG_MOD_EN_MASK))
disable_irq(wled->ovp_irq);
but wled->brightness, which is what the rest of the driver uses to tell
whether the module is on, is left at zero.
On boards where the bootloader hands the kernel a lit backlight the two
disagree. MOD_EN is already set, so the interrupt is left enabled, while
wled_update_status() still believes the backlight is off and takes
if (!!brightness != !!wled->brightness)
rc = wled_module_enable(wled, !!brightness);
on the first backlight update. wled_module_enable() then schedules
wled_ovp_work(), which calls enable_irq() on the already enabled
interrupt:
Unbalanced enable for IRQ 176
WARNING: CPU: 0 PID: 160 at kernel/irq/manage.c:774 __enable_irq+0x50/0x80
Hardware name: Xiaomi Pocophone F1 (DT)
Workqueue: events wled_ovp_work
Call trace:
__enable_irq+0x50/0x80
enable_irq+0x48/0xa0
wled_ovp_work+0x18/0x24
process_one_work+0x1d0/0x350
worker_thread+0x13c/0x460
kthread+0x110/0x114
ret_from_fork+0x10/0x20
The bootloader is not the only way to get there. The readback runs after
wledN_setup(), and wled4_setup() sets MOD_EN itself on the path where the
sink configuration does not already match, as does the tail of
wled_auto_string_detection(), which all three setup paths can reach
through wled_auto_detection_at_init(). A cold-booted board with a dark
panel can therefore reach the same disagreement.
Move the MOD_EN readback into wled_probe() and use it to seed
wled->brightness, so the driver starts out agreeing with the hardware,
and key the OVP interrupt off wled->brightness instead. The first
backlight update then only reprograms the brightness registers and
leaves both the module and the interrupt alone. The OVP interrupt also
stays armed from probe whenever the module is already enabled, rather
than being disabled at probe and only enabled once something writes
brightness.
Note that a backlight update requesting brightness 0 before any non-zero
one now really does turn the module off wherever MOD_EN was already set,
where before it was silently ignored.
wled->brightness is seeded with default-brightness rather than the level
the bootloader actually programmed, so the first update can still step
the brightness. Reading that level back is version specific and is done
in a follow-up, to keep this fix small enough to backport.
Assisted-by: LLM
Fixes:
|
||
|
David Heidelberg
|
22672f81f0 |
backlight: qcom-wled: Fix WLED3 brightness register stride
WLED3 has a 16-bit brightness register pair per string, at 0x40 + 2*n,
which is what the pm8941-wled driver wrote to:
rc = regmap_bulk_write(wled->regmap,
wled->addr + WLED3_CTRL_REG_VAL_BASE + 2 * i,
v, 2);
The restructuring for WLED3 turned that into WLED3_SINK_REG_BRIGHT(n),
defined as 0x40 + n, so the two byte writes for consecutive strings
overlap: string 1 overwrites the MSB of string 0 with its own LSB, and
with the default three strings only string 1 ends up with the requested
value.
Use the 2 byte stride.
Fixes:
|
||
|
David Heidelberg
|
1dbd46d4b2 |
backlight: qcom-wled: Fix NULL pointer dereference in wled_remove()
wled_probe() doesn't set the driver data for the platform device.
As a result, platform_get_drvdata() in wled_remove() will return NULL,
and the first dereference of it crashes on unbind.
Set the platform device driver data in wled_probe().
Cc: stable@vger.kernel.org
Fixes:
|
||
|
David Heidelberg
|
2ffcac9165 |
backlight: qcom-wled: Read back the programmed brightness at probe
Since the previous change wled_probe() seeds wled->brightness from MOD_EN, but with default-brightness rather than the level the hardware is actually driving, so a backlight left lit by the bootloader still visibly steps on the first update, and actual_brightness reports the last value written rather than what the panel shows. Add wled_read_brightness(), which returns 0 when MOD_EN is clear and otherwise reads the brightness register the matching wledN_set_brightness() writes: the first enabled string on WLED3 and WLED4, the selected modulator on WLED5. Use it to seed both wled->brightness and the initial backlight property, and expose it as backlight_ops.get_brightness so that actual_brightness reflects the hardware too. A module that is enabled with the brightness registers at zero, which wled4_setup() and wled_auto_string_detection() can leave behind on a cold boot, now reads back as off. The OVP interrupt is then armed by the first brightness update rather than from probe, which is what happens on every other board where the module starts out disabled. Suggested-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Assisted-by: LLM Signed-off-by: David Heidelberg <david@ixit.cz> Reviewed-by: Daniel Thompson (RISCstar) <danielt@kernel.org> Link: https://patch.msgid.link/20260921-qcom-wled-backlight-v4-4-bab8c7ef73cb@ixit.cz Signed-off-by: Lee Jones <lee@kernel.org> |
||
|
David Heidelberg
|
b32a8c32fe |
backlight: qcom-wled: Fix unbalanced OVP IRQ enable at probe
wled_configure_ovp_irq() derives the initial state of the OVP interrupt
from the hardware:
/* Keep OVP irq disabled until module is enabled */
if (!(val & WLED3_CTRL_REG_MOD_EN_MASK))
disable_irq(wled->ovp_irq);
but wled->brightness, which is what the rest of the driver uses to tell
whether the module is on, is left at zero.
On boards where the bootloader hands the kernel a lit backlight the two
disagree. MOD_EN is already set, so the interrupt is left enabled, while
wled_update_status() still believes the backlight is off and takes
if (!!brightness != !!wled->brightness)
rc = wled_module_enable(wled, !!brightness);
on the first backlight update. wled_module_enable() then schedules
wled_ovp_work(), which calls enable_irq() on the already enabled
interrupt:
Unbalanced enable for IRQ 176
WARNING: CPU: 0 PID: 160 at kernel/irq/manage.c:774 __enable_irq+0x50/0x80
Hardware name: Xiaomi Pocophone F1 (DT)
Workqueue: events wled_ovp_work
Call trace:
__enable_irq+0x50/0x80
enable_irq+0x48/0xa0
wled_ovp_work+0x18/0x24
process_one_work+0x1d0/0x350
worker_thread+0x13c/0x460
kthread+0x110/0x114
ret_from_fork+0x10/0x20
The bootloader is not the only way to get there. The readback runs after
wledN_setup(), and wled4_setup() sets MOD_EN itself on the path where the
sink configuration does not already match, as does the tail of
wled_auto_string_detection(), which all three setup paths can reach
through wled_auto_detection_at_init(). A cold-booted board with a dark
panel can therefore reach the same disagreement.
Move the MOD_EN readback into wled_probe() and use it to seed
wled->brightness, so the driver starts out agreeing with the hardware,
and key the OVP interrupt off wled->brightness instead. The first
backlight update then only reprograms the brightness registers and
leaves both the module and the interrupt alone. The OVP interrupt also
stays armed from probe whenever the module is already enabled, rather
than being disabled at probe and only enabled once something writes
brightness.
Note that a backlight update requesting brightness 0 before any non-zero
one now really does turn the module off wherever MOD_EN was already set,
where before it was silently ignored.
wled->brightness is seeded with default-brightness rather than the level
the bootloader actually programmed, so the first update can still step
the brightness. Reading that level back is version specific and is done
in a follow-up, to keep this fix small enough to backport.
Assisted-by: LLM
Fixes:
|
||
|
David Heidelberg
|
e60dc9c05e |
backlight: qcom-wled: Fix WLED3 brightness register stride
WLED3 has a 16-bit brightness register pair per string, at 0x40 + 2*n,
which is what the pm8941-wled driver wrote to:
rc = regmap_bulk_write(wled->regmap,
wled->addr + WLED3_CTRL_REG_VAL_BASE + 2 * i,
v, 2);
The restructuring for WLED3 turned that into WLED3_SINK_REG_BRIGHT(n),
defined as 0x40 + n, so the two byte writes for consecutive strings
overlap: string 1 overwrites the MSB of string 0 with its own LSB, and
with the default three strings only string 1 ends up with the requested
value.
Use the 2 byte stride.
Fixes:
|
||
|
David Heidelberg
|
186fc521f2 |
backlight: qcom-wled: Fix NULL pointer dereference in wled_remove()
wled_probe() doesn't set the driver data for the platform device.
As a result, platform_get_drvdata() in wled_remove() will return NULL,
and the first dereference of it crashes on unbind.
Set the platform device driver data in wled_probe().
Cc: stable@vger.kernel.org
Fixes:
|
||
|
Myeonghun Pak
|
2cf184caab |
backlight: lm3630a: Cancel delayed work before destroying workqueue
The interrupt handler queues delayed work to read the interrupt status.
After free_irq() stops the producer, this work can still be waiting on its
timer. destroy_workqueue() cannot drain delayed work that has not yet been
queued by its timer, so the timer can outlive both the workqueue and the
devm-allocated chip containing the work.
Cancel the delayed work synchronously after freeing the IRQ and before
destroying the workqueue. This also waits for any running status read to
finish before the chip's resources are released.
This issue was identified during our ongoing static-analysis research
while reviewing kernel code.
Fixes:
|
||
|
Helge Deller
|
111a4137ed |
fbdev: atafb: avoid cast when assigning buffer address pointer
The sparse tool complains that the "cast removes the address space
'__iomem' of expression".
Avoid the cast by using the screen_buffer pointer instead of the
screen_base pointer from the union.
Fixes:
|
||
|
Helge Deller
|
ec4eb034cf |
fbdev: atafb: fix sparse warnings
Fix two sparse warnings:
- atafb.c:1092: sparse: Using plain integer as NULL pointer
Use NULL instead of 0 when assigning a pointer.
- atafb.c:2824: sparse: switch with no cases
FBCMD_GET_CURRENTPAR and and FBCMD_SET_CURRENTPAR seem to be
historic defines, which are not any longer in the kernel, and
as such the code isn't built any longer and may be dropped.
Fixes:
|
||
|
Hemanth Selam
|
d72a71b826 |
fbdev: atyfb_base: fix typos in comments
Assisted-by: Cursor:claude-opus-5 Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Hemanth Selam
|
c24ea935ab |
fbdev: aty128fb: fix typos in comments
Assisted-by: Cursor:claude-opus-5 Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Hemanth Selam
|
727a98c917 |
fbdev: mach64: fix typos in comments
Assisted-by: Cursor:claude-opus-5 Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Hemanth Selam
|
e2c83f4c49 |
fbdev: radeonfb: fix typos in comments
Assisted-by: Cursor:claude-opus-5 Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Hemanth Selam
|
be07060f1f |
fbdev: omap2fb: fix typos in comments
Assisted-by: Cursor:claude-opus-5 Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Hemanth Selam
|
b3b8e5b713 |
fbdev: ocfb: fix typos in comments
Assisted-by: Cursor:claude-opus-5 Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Hemanth Selam
|
cac2199814 |
fbdev: skeletonfb: fix typos in comments
Assisted-by: Cursor:claude-opus-5 Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Hemanth Selam
|
4d6c030510 |
fbdev: pm2fb: fix typos in comments
Assisted-by: Cursor:claude-opus-5 Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Hemanth Selam
|
a9cb7304cf |
fbdev: maxinefb: fix typos in comments
Assisted-by: Cursor:claude-opus-5 Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Hemanth Selam
|
0b5126863b |
fbdev: kyro: fix typos in comments
Assisted-by: Cursor:claude-opus-5 Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Hemanth Selam
|
962bc9c4af |
fbdev: grvga: fix typos in comments
Assisted-by: Cursor:claude-opus-5 Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de> |