net/af_iucv: mark expected switch fall-throughs

Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings:

net/iucv/af_iucv.c: warning: this statement may fall
through [-Wimplicit-fallthrough=]:  => 537:3, 519:6, 2246:6, 510:6

Notice that, in this particular case, the code comment is
modified in accordance with what GCC is expecting to find.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index 09e1694b6d341a5f1cf81e49643f9267ac4033c4..ebb62a4ebe30d3bd6347f72711b23655cddc00c5 100644 (file)
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -512,7 +512,9 @@ static void iucv_sock_close(struct sock *sk)
                        sk->sk_state = IUCV_DISCONN;
                        sk->sk_state_change(sk);
                }
-       case IUCV_DISCONN:   /* fall through */
+               /* fall through */
+
+       case IUCV_DISCONN:
                sk->sk_state = IUCV_CLOSING;
                sk->sk_state_change(sk);
 
@@ -525,8 +527,9 @@ static void iucv_sock_close(struct sock *sk)
                                        iucv_sock_in_state(sk, IUCV_CLOSED, 0),
                                        timeo);
                }
+               /* fall through */
 
-       case IUCV_CLOSING:   /* fall through */
+       case IUCV_CLOSING:
                sk->sk_state = IUCV_CLOSED;
                sk->sk_state_change(sk);
 
@@ -535,8 +538,9 @@ static void iucv_sock_close(struct sock *sk)
 
                skb_queue_purge(&iucv->send_skb_q);
                skb_queue_purge(&iucv->backlog_skb_q);
+               /* fall through */
 
-       default:   /* fall through */
+       default:
                iucv_sever_path(sk, 1);
        }
 
@@ -2247,10 +2251,10 @@ static int afiucv_hs_rcv(struct sk_buff *skb, struct net_device *dev,
                        kfree_skb(skb);
                        break;
                }
-               /* fall through and receive non-zero length data */
+               /* fall through - and receive non-zero length data */
        case (AF_IUCV_FLAG_SHT):
                /* shutdown request */
-               /* fall through and receive zero length data */
+               /* fall through - and receive zero length data */
        case 0:
                /* plain data frame */
                IUCV_SKB_CB(skb)->class = trans_hdr->iucv_hdr.class;