[PATCH 4.9 30/56] led: core: Fix brightness setting when setting delay_off=0

Greg Kroah-Hartman
2018-03-02T08:51:16Z

From: Matthieu CASTET <matthieu.castet@parrot.com>

[ Upstream commit 2b83ff96f51d0b039c4561b9f95c824d7bddb85c ]

With the current code, the following sequence won't work :
echo timer > trigger

echo 0 > delay_off
* at this point we call
** led_delay_off_store
** led_blink_set
---
drivers/leds/led-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/leds/led-core.c
+++ b/drivers/leds/led-core.c
@@ -186,7 +186,7 @@ void led_blink_set(struct led_classdev *
unsigned long *delay_on,
unsigned long *delay_off)
{
- del_timer_sync(&led_cdev->blink_timer);
+ led_stop_software_blink(led_cdev);

led_cdev->flags &= ~LED_BLINK_ONESHOT;
led_cdev->flags &= ~LED_BLINK_ONESHOT_STOP;