lcd: fix oops if driver only interested in .set_power

[safe/jmp/linux-2.6] / drivers / video / backlight / lcd.c

diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c
index 8e1731d..680e57b 100644 (file)
--- a/drivers/video/backlight/lcd.c
+++ b/drivers/video/backlight/lcd.c
@@ -42,10 +42,13 @@ static int fb_notifier_callback(struct notifier_block *self,
 
        mutex_lock(&ld->ops_lock);
        if (!ld->ops->check_fb || ld->ops->check_fb(ld, evdata->info)) {
-               if (event == FB_EVENT_BLANK)
-                       ld->ops->set_power(ld, *(int *)evdata->data);
-               else
-                       ld->ops->set_mode(ld, evdata->data);
+               if (event == FB_EVENT_BLANK) {
+                       if (ld->ops->set_power)
+                               ld->ops->set_power(ld, *(int *)evdata->data);
+               } else {
+                       if (ld->ops->set_mode)
+                               ld->ops->set_mode(ld, evdata->data);
+               }
        }
        mutex_unlock(&ld->ops_lock);
        return 0;