diff --git a/sound/sparc/dbri.c b/sound/sparc/dbri.c
index 010113156239..6e065d44060e 100644
--- a/sound/sparc/dbri.c
+++ b/sound/sparc/dbri.c
@@ -580,12 +580,16 @@ static __u32 reverse_bytes(__u32 b, int len)
 	switch (len) {
 	case 32:
 		b = ((b & 0xffff0000) >> 16) | ((b & 0x0000ffff) << 16);
+		/* fall through */
 	case 16:
 		b = ((b & 0xff00ff00) >> 8) | ((b & 0x00ff00ff) << 8);
+		/* fall through */
 	case 8:
 		b = ((b & 0xf0f0f0f0) >> 4) | ((b & 0x0f0f0f0f) << 4);
+		/* fall through */
 	case 4:
 		b = ((b & 0xcccccccc) >> 2) | ((b & 0x33333333) << 2);
+		/* fall through */
 	case 2:
 		b = ((b & 0xaaaaaaaa) >> 1) | ((b & 0x55555555) << 1);
 	case 1: