renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-23 04:34:11 +08:00
Code

leds: triggers: Return from led_trigger_set() if there is nothing to do

Browse Source 
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 <j.anaszewski@samsung.com>
Reported-by: Daniel Romell <daro@hms.se>
Acked-by Daniel Romell <daro@hms.se>
This commit is contained in:
Jacek Anaszewski 2016-09-18 20:24:29 +02:00 committed by Jacek Anaszewski
parent 74b69e5246
commit fbfa197afd
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/leds/led-triggers.c
View File

@ -110,6 +110,9 @@ void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trig)
char *envp[2]; char *envp[2];
const char *name; const char *name;
if (!led_cdev->trigger && !trig)
return;
name = trig ? trig->name : "none"; name = trig ? trig->name : "none";
event = kasprintf(GFP_KERNEL, "TRIGGER=%s", name); event = kasprintf(GFP_KERNEL, "TRIGGER=%s", name);