Hi Lee, Daniel, Jingoo,
On Wed, 22 Jan 2025 10:19:14 +0100
Herve Codina <herve.codina@xxxxxxxxxxx> wrote:
> Lockdep detects the following issue on led-backlight removal:
> [ 142.315935] ------------[ cut here ]------------
> [ 142.315954] WARNING: CPU: 2 PID: 292 at drivers/leds/led-core.c:455 led_sysfs_enable+0x54/0x80
> ...
> [ 142.500725] Call trace:
> [ 142.503176] led_sysfs_enable+0x54/0x80 (P)
> [ 142.507370] led_bl_remove+0x80/0xa8 [led_bl]
> [ 142.511742] platform_remove+0x30/0x58
> [ 142.515501] device_remove+0x54/0x90
> ...
>
> Indeed, led_sysfs_enable() has to be called with the led_access
> lock held.
>
> Hold the lock when calling led_sysfs_disable().
>
> Fixes: ae232e45acf9 ("backlight: add led-backlight driver")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Herve Codina <herve.codina@xxxxxxxxxxx>
I didn't receive any feedback.
v6.14-rc1 has been released since the patch was sent but the patch applies on
top of v6.14-rc1 without any issue.
Of course if really needed, I can resend the patch. Just tell me.
Best regards,
Hervé
