[PATCH] led: triggers: Fix a memory leak bug

[Wenwen Wang]

In led_trigger_set(), 'event' is allocated in kasprintf(). However, it is
not deallocated in the following execution if the label 'err_activate' or
'err_add_groups' is entered, leading to memory leaks. To fix this issue,
free 'event' before returning the error.

Signed-off-by: Wenwen Wang <wen...@cs.uga.edu>
---
 drivers/leds/led-triggers.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index 8d11a5e..eff1bda 100644
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -173,6 +173,7 @@ int led_trigger_set(struct led_classdev *led_cdev, struct 
led_trigger *trig)
        list_del(&led_cdev->trig_list);
        write_unlock_irqrestore(&led_cdev->trigger->leddev_list_lock, flags);
        led_set_brightness(led_cdev, LED_OFF);
+       kfree(event);
 
        return ret;
 }
-- 
2.7.4