decnet: af_decnet: mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index d4c9a8bbad3e..518cea17b811 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -630,10 +630,12 @@ static void dn_destroy_sock(struct sock *sk)
                 goto disc_reject;
         case DN_RUN:
                 scp->state = DN_DI;
+                /* fall through */
         case DN_DI:
         case DN_DR:
 disc_reject:
                 dn_nsp_send_disc(sk, NSP_DISCINIT, 0, sk->sk_allocation);
+                /* fall through */
         case DN_NC:
         case DN_NR:
         case DN_RJ:
@@ -647,6 +649,7 @@ disc_reject:
                 break;
         default:
                 printk(KERN_DEBUG "DECnet: dn_destroy_sock passed socket in invalid state\n");
+                /* fall through */
         case DN_O:
                 dn_stop_slow_timer(sk);