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Commit ddd1f258 authored by Heiner Kallweit's avatar Heiner Kallweit Committed by Greg Kroah-Hartman
Browse files

leds: trigger: panic: Don't register panic notifier if creating the trigger failed 



[ Upstream commit afacb21834bb02785ddb0c3ec197208803b74faa ]

It doesn't make sense to register the panic notifier if creating the
panic trigger failed.

Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/8a61e229-5388-46c7-919a-4d18cc7362b2@gmail.com


Signed-off-by: default avatarLee Jones <lee@kernel.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 9052b3e0

drivers/leds/trigger/ledtrig-panic.c

+4 −1
Original line number Diff line number Diff line
@@ -63,10 +63,13 @@ static long led_panic_blink(int state) 


static int __init ledtrig_panic_init(void)

{

	led_trigger_register_simple("panic", &trigger);

	if (!trigger)

		return -ENOMEM;



	atomic_notifier_chain_register(&panic_notifier_list,

				       &led_trigger_panic_nb);



	led_trigger_register_simple("panic", &trigger);

	panic_blink = led_panic_blink;

	return 0;

}