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leds: triggers: Allow to switch the trigger to "panic" on a kernel panic

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This commit adds a new led_cdev flag LED_PANIC_INDICATOR, which
allows to mark a specific LED to be switched to the "panic"
trigger, on a kernel panic.

This is useful to allow the user to assign a regular trigger
to a given LED, and still blink that LED on a kernel panic.

Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
This commit is contained in:
Ezequiel Garcia
2016-04-28 19:03:38 -03:00
committed by Jacek Anaszewski
parent f15c65afdd
commit ba93cdce5b
5 changed files with 53 additions and 1 deletions
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2
drivers/leds/led-triggers.c
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@@ -26,7 +26,7 @@
* Nests outside led_cdev->trigger_lock
*/
static DECLARE_RWSEM(triggers_list_lock);
static LIST_HEAD(trigger_list);
LIST_HEAD(trigger_list);
/* Used by LED Class */