diff --git a/drivers/md/bcache/util.c b/drivers/md/bcache/util.c
index a23cd6a14b74..6198041f0ee2 100644
--- a/drivers/md/bcache/util.c
+++ b/drivers/md/bcache/util.c
@@ -32,20 +32,27 @@ int bch_ ## name ## _h(const char *cp, type *res)		\
 	case 'y':						\
 	case 'z':						\
 		u++;						\
+		/* fall through */				\
 	case 'e':						\
 		u++;						\
+		/* fall through */				\
 	case 'p':						\
 		u++;						\
+		/* fall through */				\
 	case 't':						\
 		u++;						\
+		/* fall through */				\
 	case 'g':						\
 		u++;						\
+		/* fall through */				\
 	case 'm':						\
 		u++;						\
+		/* fall through */				\
 	case 'k':						\
 		u++;						\
 		if (e++ == cp)					\
 			return -EINVAL;				\
+		/* fall through */				\
 	case '\n':						\
 	case '\0':						\
 		if (*e == '\n')					\