diff mbox series

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

Message ID c8aa079f-acf7-4cb8-b198-d16fcc5778c3@gmail.com
State New
Headers show
Series leds: trigger: panic: don't register panic notifier if creating the trigger failed | expand

Commit Message

Heiner Kallweit Dec. 9, 2023, 10:51 p.m. UTC 
It doesn't make sense to register the panic notifier if creating the
panic trigger failed.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
 drivers/leds/trigger/ledtrig-panic.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/leds/trigger/ledtrig-panic.c b/drivers/leds/trigger/ledtrig-panic.c
index 64abf2e91..72297a845 100644
--- 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 0;
+
 	atomic_notifier_chain_register(&panic_notifier_list,
 				       &led_trigger_panic_nb);
 
-	led_trigger_register_simple("panic", &trigger);
 	panic_blink = led_panic_blink;
 	return 0;
 }