1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c
index 959024812abc..1e1e61a4b5da 100644
--- a/drivers/video/backlight/lcd.c
+++ b/drivers/video/backlight/lcd.c
@@ -198,6 +198,7 @@ struct lcd_device *lcd_device_register(const char *name, void *devdata,
                 return ERR_PTR(-ENOMEM);
 
         init_MUTEX(&new_ld->sem);
+        mutex_init(&new_ld->update_lock);
         new_ld->props = lp;
         memset(&new_ld->class_dev, 0, sizeof(new_ld->class_dev));
         new_ld->class_dev.class = &lcd_class;