On 2021-09-27 17:44:51 [+0200], Pavel Machek wrote: > > Would you mind reading and responding to the rest of the email? The patch you mentioned, https://https://lkml.kernel.org/r/.kernel.org/all/20210915181601.99a68f5718be.I1a28b342d2d52cdeeeb81ecd6020c25cbf1dbfc0@changeid/ would remove the lock from led_trigger_event(). Are there any guarantees how many callbacks maybe invoked and what kind of locks may be acquired? Leaving kworker usage aside there are still things like spinlock_t usage in input_leds_brightness_set(), nic78bx_brightness_set() (from a quick grep) which have the same problems. > I'm not applying this. I hope you reconsider. It is not all LED usage, just the CPU trigger. > Pavel Sebastian
