2 files changed, 11 insertions, 0 deletions

diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index a8dd59ebedf8..ac05a928f764 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -24,6 +24,12 @@
 
 static struct class *leds_class;
 
+static void led_update_brightness(struct led_classdev *led_cdev)
+{
+        if (led_cdev->brightness_get)
+                led_cdev->brightness = led_cdev->brightness_get(led_cdev);
+}
+
 static ssize_t led_brightness_show(struct device *dev, 
                 struct device_attribute *attr, char *buf)
 {
@@ -31,6 +37,7 @@ static ssize_t led_brightness_show(struct device *dev,
         ssize_t ret = 0;
 
         /* no lock needed for this */
+        led_update_brightness(led_cdev);
         sprintf(buf, "%u\n", led_cdev->brightness);
         ret = strlen(buf) + 1;
 
@@ -113,6 +120,8 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
         list_add_tail(&led_cdev->node, &leds_list);
         up_write(&leds_list_lock);
 
+        led_update_brightness(led_cdev);
+
 #ifdef CONFIG_LEDS_TRIGGERS
         init_rwsem(&led_cdev->trigger_lock);
 
diff --git a/include/linux/leds.h b/include/linux/leds.h
index c195a674b6ca..ff1570f97045 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -37,6 +37,8 @@ struct led_classdev {
         /* Set LED brightness level */
         void            (*brightness_set)(struct led_classdev *led_cdev,
                                           enum led_brightness brightness);
+        /* Get LED brightness level */
+        enum led_brightness (*brightness_get)(struct led_classdev *led_cdev);
 
         /* Activate hardware accelerated blink */
         int             (*blink_set)(struct led_classdev *led_cdev,