diff --git a/drivers/staging/vt6656/key.c b/drivers/staging/vt6656/key.c
index 91dede54cc1f..dcd933a6b66e 100644
--- a/drivers/staging/vt6656/key.c
+++ b/drivers/staging/vt6656/key.c
@@ -63,17 +63,19 @@ static int vnt_set_keymode(struct ieee80211_hw *hw, u8 *mac_addr,
 	}
 
 	switch (key_type) {
-		/* fallthrough */
 	case VNT_KEY_DEFAULTKEY:
 		/* default key last entry */
 		entry = MAX_KEY_TABLE - 1;
 		key->hw_key_idx = entry;
+		/* fall through */
 	case VNT_KEY_ALLGROUP:
 		key_mode |= VNT_KEY_ALLGROUP;
 		if (onfly_latch)
 			key_mode |= VNT_KEY_ONFLY_ALL;
+		/* fall through */
 	case VNT_KEY_GROUP_ADDRESS:
 		key_mode |= mode;
+		/* fall through */
 	case VNT_KEY_GROUP:
 		key_mode |= (mode << 4);
 		key_mode |= VNT_KEY_GROUP;