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The purpose of the patch is to fix ledtrig-timer functionality that is used to indicate the firmware upgrade is in progress.
The fix is based on https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7b6af2c53192f1766892ef40c8f48a413509ed72
diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c
index d70d4a5..454ed4d 100644
--- a/drivers/leds/led-core.c
+++ b/drivers/leds/led-core.c
@@ -186,8 +186,9 @@ void led_blink_set(struct led_classdev *led_cdev,
unsigned long *delay_on,
unsigned long *delay_off)
{
- led_stop_software_blink(led_cdev);
+ del_timer_sync(&led_cdev->blink_timer);
+ led_cdev->flags &= ~LED_BLINK_SW;
led_cdev->flags &= ~LED_BLINK_ONESHOT;
led_cdev->flags &= ~LED_BLINK_ONESHOT_STOP;
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