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authorKai-Heng Feng <kai.heng.feng@canonical.com>2020-07-02 08:45:00 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-08-21 10:48:09 +0300
commita14ab85a26751b93d9b0597600e0895488a75730 (patch)
tree0f3dc9a9f5a9edb62bda7e16d264e152df854452 /drivers/leds
parent7751804f04f3784b59b4812a06458efddd730659 (diff)
downloadlinux-a14ab85a26751b93d9b0597600e0895488a75730.tar.xz
leds: core: Flush scheduled work for system suspend
[ Upstream commit 302a085c20194bfa7df52e0fe684ee0c41da02e6 ] 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> Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/leds')
-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 b0e2d55acbd6..6c7269fcfa77 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);