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| author | Heiner Kallweit <hkallweit1@gmail.com> | 2023-12-16 23:05:33 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-23 10:42:13 +0300 |
| commit | d47f5d41d8c022db641947c765f8aa1f115dbb4c (patch) | |
| tree | bac4e832e23f7b8fe124b86c5d6e9943080ca11e | |
| parent | 8342ac4a552aa6f3408adca40af8398808329a20 (diff) | |
| download | linux-d47f5d41d8c022db641947c765f8aa1f115dbb4c.tar.xz | |
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: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/8a61e229-5388-46c7-919a-4d18cc7362b2@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/leds/trigger/ledtrig-panic.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/leds/trigger/ledtrig-panic.c b/drivers/leds/trigger/ledtrig-panic.c index 5751cd032f9d..4bf232465dfd 100644 --- a/drivers/leds/trigger/ledtrig-panic.c +++ b/drivers/leds/trigger/ledtrig-panic.c @@ -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; } |