[PATCH] net: tipc: mark expected switch fall-throughs

[Gustavo A. R. Silva]

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

Signed-off-by: Gustavo A. R. Silva <garsi...@embeddedor.com>
---
This code was tested by compilation only (GCC 7.2.0 was used).
Please, verify if the actual intention of the code is to fall through.

 net/tipc/bearer.c | 1 +
 net/tipc/link.c   | 3 ++-
 net/tipc/socket.c | 4 ++--
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 47ec121..786dcfd 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -615,6 +615,7 @@ static int tipc_l2_device_event(struct notifier_block *nb, 
unsigned long evt,
        case NETDEV_CHANGE:
                if (netif_carrier_ok(dev))
                        break;
+               /* fall through */
        case NETDEV_UP:
                test_and_set_bit_lock(0, &b->up);
                break;
diff --git a/net/tipc/link.c b/net/tipc/link.c
index 870b9b8..fc1714e 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -1051,6 +1051,7 @@ static bool tipc_data_input(struct tipc_link *l, struct 
sk_buff *skb,
                        skb_queue_tail(mc_inputq, skb);
                        return true;
                }
+               /* fall through */
        case CONN_MANAGER:
                skb_queue_tail(inputq, skb);
                return true;
@@ -1463,7 +1464,7 @@ static int tipc_link_proto_rcv(struct tipc_link *l, 
struct sk_buff *skb,
                if ((less_eq(msg_session(hdr), l->peer_session)) &&
                    (l->peer_session != ANY_SESSION))
                        break;
-               /* fall thru' */
+               /* fall through */
 
        case ACTIVATE_MSG:
 
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 2bbab4f..ce6cd01 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -730,7 +730,7 @@ static unsigned int tipc_poll(struct file *file, struct 
socket *sock,
        case TIPC_ESTABLISHED:
                if (!tsk->cong_link_cnt && !tsk_conn_cong(tsk))
                        revents |= POLLOUT;
-               /* fall thru' */
+               /* fall through */
        case TIPC_LISTEN:
        case TIPC_CONNECTING:
                if (skb)
@@ -2341,7 +2341,7 @@ static int tipc_connect(struct socket *sock, struct 
sockaddr *dest,
                 * case is EINPROGRESS, rather than EALREADY.
                 */
                res = -EINPROGRESS;
-               /* fall thru' */
+               /* fall through */
        case TIPC_CONNECTING:
                if (!timeout) {
                        if (previous == TIPC_CONNECTING)
-- 
2.7.4