diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 92d80aa0c0ef..744ba58488e0 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -320,6 +320,7 @@ ATTRIBUTE_GROUPS(bl_device);
  * backlight_force_update - tell the backlight subsystem that hardware state
  *   has changed
  * @bd: the backlight device to update
+ * @reason: reason for update
  *
  * Updates the internal state of the backlight in response to a hardware event,
  * and generate a uevent to notify userspace
@@ -344,6 +345,7 @@ EXPORT_SYMBOL(backlight_force_update);
  * @devdata: an optional pointer to be stored for private driver use. The
  *   methods may retrieve it by using bl_get_data(bd).
  * @ops: the backlight operations structure.
+ * @props: pointer to backlight's properties structure.
  *
  * Creates and registers new backlight device. Returns either an
  * ERR_PTR() or a pointer to the newly allocated device.