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

[linux-2.6-microblaze.git] / drivers / leds / trigger / ledtrig-panic.c

diff --git a/drivers/leds/trigger/ledtrig-panic.c b/drivers/leds/trigger/ledtrig-panic.c
index 64abf2e..5a6b21b 100644 (file)
--- a/drivers/leds/trigger/ledtrig-panic.c
+++ b/drivers/leds/trigger/ledtrig-panic.c
@@ -64,10 +64,13 @@ 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;
 }