[PATCH RESEND][next] net/packet: Fix fall-through warnings for Clang

[Gustavo A. R. Silva]

In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
by explicitly adding a break statement instead of letting the code fall
through to the next case.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>
---
 net/packet/af_packet.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index e24b2841c643..880a1ab9a305 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1652,6 +1652,7 @@ static int fanout_add(struct sock *sk, struct fanout_args *args)
 	case PACKET_FANOUT_ROLLOVER:
 		if (type_flags & PACKET_FANOUT_FLAG_ROLLOVER)
 			return -EINVAL;
+		break;
 	case PACKET_FANOUT_HASH:
 	case PACKET_FANOUT_LB:
 	case PACKET_FANOUT_CPU:
-- 
2.27.0