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| author | Rong Zhang <i@rong.moe> | 2026-09-21 03:40:15 +0800 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2026-09-24 13:17:32 +0100 |
| commit | 6887f40dadb5a263de1d9e4b5517400c08089d35 (patch) | |
| tree | 91b182496a726dcc3c6a18b356c2ae8cec75af72 /tools/perf/scripts/python/stackcollapse.py | |
| parent | d4948551280b1d52c1896b7c80d5383b7d8ad7c5 (diff) | |
| download | linux-next-6887f40dadb5a263de1d9e4b5517400c08089d35.tar.gz linux-next-6887f40dadb5a263de1d9e4b5517400c08089d35.zip | |
leds: class: Always protect brightness_show() with led_access
The led_classdev_register_ext() protects transient states when
registering with the led_access mutex and relies on all sensitive sysfs
attribute callbacks holding the mutex to prevent exposing transient
states.
The Fixes: commit broke this as it accessed trigger_lock without holding
led_access. Fix it by protecting brightness_show() with led_access in
all code paths.
Fixes: b819dc7d8fb2 ("leds: core: Report ENODATA for brightness of hardware controlled LED")
Signed-off-by: Rong Zhang <i@rong.moe>
Link: https://patch.msgid.link/20260921-leds-trigger-hw-changed-v7-1-fe3cdb6dec51@rong.moe
Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions