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authorKai-Heng Feng <kai.heng.feng@canonical.com>2020-07-02 13:45:00 +0800
committerPavel Machek <pavel@ucw.cz>2020-07-12 10:10:37 +0200
commit302a085c20194bfa7df52e0fe684ee0c41da02e6 (patch)
treed408d8ae7b85843fc4150f01fa3f68c393dcd61f
parent5ad79c20b6d28467db643ac107bbdaa01aa93a23 (diff)
downloadlwn-302a085c20194bfa7df52e0fe684ee0c41da02e6.tar.gz
lwn-302a085c20194bfa7df52e0fe684ee0c41da02e6.zip
leds: core: Flush scheduled work for system suspend
Sometimes LED won't be turned off by LED_CORE_SUSPENDRESUME flag upon system suspend. led_set_brightness_nopm() uses schedule_work() to set LED brightness. However, there's no guarantee that the scheduled work gets executed because no one flushes the work. So flush the scheduled work to make sure LED gets turned off. Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com> Fixes: 81fe8e5b73e3 ("leds: core: Add led_set_brightness_nosleep{nopm} functions") Signed-off-by: Pavel Machek <pavel@ucw.cz>
-rw-r--r--drivers/leds/led-class.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index 3363a6551a70..cc3929f858b6 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -173,6 +173,7 @@ void led_classdev_suspend(struct led_classdev *led_cdev)
{
led_cdev->flags |= LED_SUSPENDED;
led_set_brightness_nopm(led_cdev, 0);
+ flush_work(&led_cdev->set_brightness_work);
}
EXPORT_SYMBOL_GPL(led_classdev_suspend);