From: Jacek Anaszewski <[email protected]> If led_trigger_set() is called with "trig" argument set to NULL, and there is no trigger to remove then the function should return immediately so as to avoid doing unnecessary allocation and sending uevent.
Signed-off-by: Jacek Anaszewski <[email protected]> Reported-by: Daniel Romell <[email protected]> --- drivers/leds/led-triggers.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c index 59d6a3e..c7a38d4 100644 --- a/drivers/leds/led-triggers.c +++ b/drivers/leds/led-triggers.c @@ -110,6 +110,9 @@ void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trig) char *envp[2]; const char *name; + if (!led_cdev->trigger && !trig) + return; + name = trig ? trig->name : "none"; event = kasprintf(GFP_KERNEL, "TRIGGER=%s", name); -- 1.9.1
