leds: Improve and export led_update_brightness

[cascardo/linux.git] / drivers / leds / led-core.c

diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c
index 50b579a..aaa8eba 100644 (file)
--- a/drivers/leds/led-core.c
+++ b/drivers/leds/led-core.c
@@ -127,3 +127,19 @@ void led_set_brightness(struct led_classdev *led_cdev,
        __led_set_brightness(led_cdev, brightness);
 }
 EXPORT_SYMBOL(led_set_brightness);
+
+int led_update_brightness(struct led_classdev *led_cdev)
+{
+       int ret = 0;
+
+       if (led_cdev->brightness_get) {
+               ret = led_cdev->brightness_get(led_cdev);
+               if (ret >= 0) {
+                       led_cdev->brightness = ret;
+                       return 0;
+               }
+       }
+
+       return ret;
+}
+EXPORT_SYMBOL(led_update_brightness);