[PATCH] leds: turn LED off when changing triggers

I was playing with LED triggers when I noticed that changing from heartbeat
(or ide-disk) to "none" at the right moment would leave the LED stuck on.
This is easy to reproduce by doing "find / >/dev/null" with the ide-disk
trigger enabled and then switching to "none".

Here is a patch that fixes the problem by explicitly turning the LED off
after removing the existing trigger.

Signed-off-by: Paul Collins <paul@ondioline.org>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index 47f0ff196328..454fb0901f82 100644
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -125,6 +125,7 @@ void led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trigger)
                 write_unlock_irqrestore(&led_cdev->trigger->leddev_list_lock, flags);
                 if (led_cdev->trigger->deactivate)
                         led_cdev->trigger->deactivate(led_cdev);
+                led_set_brightness(led_cdev, LED_OFF);
         }
         if (trigger) {
                 write_lock_irqsave(&trigger->leddev_list_lock, flags);