diff --git a/drivers/media/video/msp3400-driver.c b/drivers/media/video/msp3400-driver.c
index 09ff25b..69ed369 100644
--- a/drivers/media/video/msp3400-driver.c
+++ b/drivers/media/video/msp3400-driver.c
@@ -1031,8 +1031,8 @@
 	}
 
 	default:
-		/* nothing */
-		break;
+		/* unknown */
+		return -EINVAL;
 	}
 	return 0;
 }