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-rw-r--r--drivers/leds/led-class.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index f704391d57a8..f4bb02f6e042 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -350,10 +350,15 @@ int led_classdev_register_ext(struct device *parent,
if (ret < 0)
return ret;
- if (init_data->fwnode)
+ if (init_data->fwnode) {
fwnode_property_read_string(init_data->fwnode,
"linux,default-trigger",
&led_cdev->default_trigger);
+
+ if (fwnode_property_present(init_data->fwnode,
+ "retain-state-shutdown"))
+ led_cdev->flags |= LED_RETAIN_AT_SHUTDOWN;
+ }
} else {
proposed_name = led_cdev->name;
}
@@ -444,7 +449,8 @@ void led_classdev_unregister(struct led_classdev *led_cdev)
/* Stop blinking */
led_stop_software_blink(led_cdev);
- led_set_brightness(led_cdev, LED_OFF);
+ if (!(led_cdev->flags & LED_RETAIN_AT_SHUTDOWN))
+ led_set_brightness(led_cdev, LED_OFF);
flush_work(&led_cdev->set_brightness_work);