> I have no idea where we enter atomic state.
Uh huh...
drivers/leds/led-triggers.c:led_trigger_register:
| read_lock(&leds_list_lock);
| list_for_each_entry(led_cdev, &leds_list, node) {
| down_write(&led_cdev->trigger_lock);
introduced in
commit dc47206e552c0850ad11f7e9a1fca0a3c92f5d65
Author: Richard Purdie <rpurdie@xxxxxxxxx>
Date: Sat Nov 10 13:29:04 2007 +0000
leds: Fix led trigger locking bugs
I guess the read_lock needs to be a mutex/rw semaphore.
johannes
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