net: sunrpc: 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: Anna Schumaker <Anna.Schumaker@Netapp.com>

3 files changed, 16 insertions, 0 deletions

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 2ad827db2704..d25b077d326d 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1586,6 +1586,7 @@ call_reserveresult(struct rpc_task *task)
         switch (status) {
         case -ENOMEM:
                 rpc_delay(task, HZ >> 2);
+                /* fall through */
         case -EAGAIN:   /* woken up; retry */
                 task->tk_action = call_retry_reserve;
                 return;
@@ -1647,10 +1648,13 @@ call_refreshresult(struct rpc_task *task)
                 /* Use rate-limiting and a max number of retries if refresh
                  * had status 0 but failed to update the cred.
                  */
+                /* fall through */
         case -ETIMEDOUT:
                 rpc_delay(task, 3*HZ);
+                /* fall through */
         case -EAGAIN:
                 status = -EACCES;
+                /* fall through */
         case -EKEYEXPIRED:
                 if (!task->tk_cred_retry)
                         break;
@@ -1911,6 +1915,7 @@ call_connect_status(struct rpc_task *task)
                         task->tk_action = call_bind;
                         return;
                 }
+                /* fall through */
         case -ECONNRESET:
         case -ECONNABORTED:
         case -ENETUNREACH:
@@ -1924,6 +1929,7 @@ call_connect_status(struct rpc_task *task)
                         break;
                 /* retry with existing socket, after a delay */
                 rpc_delay(task, 3*HZ);
+                /* fall through */
         case -EAGAIN:
                 /* Check for timeouts before looping back to call_bind */
         case -ETIMEDOUT:
@@ -2025,6 +2031,7 @@ call_transmit_status(struct rpc_task *task)
                         rpc_exit(task, task->tk_status);
                         break;
                 }
+                /* fall through */
         case -ECONNRESET:
         case -ECONNABORTED:
         case -EADDRINUSE:
@@ -2145,6 +2152,7 @@ call_status(struct rpc_task *task)
                  * were a timeout.
                  */
                 rpc_delay(task, 3*HZ);
+                /* fall through */
         case -ETIMEDOUT:
                 task->tk_action = call_timeout;
                 break;
@@ -2152,14 +2160,17 @@ call_status(struct rpc_task *task)
         case -ECONNRESET:
         case -ECONNABORTED:
                 rpc_force_rebind(clnt);
+                /* fall through */
         case -EADDRINUSE:
                 rpc_delay(task, 3*HZ);
+                /* fall through */
         case -EPIPE:
         case -ENOTCONN:
                 task->tk_action = call_bind;
                 break;
         case -ENOBUFS:
                 rpc_delay(task, HZ>>2);
+                /* fall through */
         case -EAGAIN:
                 task->tk_action = call_transmit;
                 break;
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index e741ec2b4d8e..02a9bacb239b 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -1139,6 +1139,7 @@ void xprt_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task)
         case -EAGAIN:
                 xprt_add_backlog(xprt, task);
                 dprintk("RPC:       waiting for request slot\n");
+                /* fall through */
         default:
                 task->tk_status = -EAGAIN;
         }
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index c1841f234a71..684e356b40e4 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -551,6 +551,7 @@ static int xs_local_send_request(struct rpc_task *task)
         default:
                 dprintk("RPC:       sendmsg returned unrecognized error %d\n",
                         -status);
+                /* fall through */
         case -EPIPE:
                 xs_close(xprt);
                 status = -ENOTCONN;
@@ -1610,6 +1611,7 @@ static void xs_tcp_state_change(struct sock *sk)
                 xprt->connect_cookie++;
                 clear_bit(XPRT_CONNECTED, &xprt->state);
                 xs_tcp_force_close(xprt);
+                /* fall through */
         case TCP_CLOSING:
                 /*
                  * If the server closed down the connection, make sure that
@@ -2367,6 +2369,7 @@ static int xs_tcp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock)
         switch (ret) {
         case 0:
                 xs_set_srcport(transport, sock);
+                /* fall through */
         case -EINPROGRESS:
                 /* SYN_SENT! */
                 if (xprt->reestablish_timeout < XS_TCP_INIT_REEST_TO)
@@ -2418,6 +2421,7 @@ static void xs_tcp_setup_socket(struct work_struct *work)
         default:
                 printk("%s: connect returned unhandled error %d\n",
                         __func__, status);
+                /* fall through */
         case -EADDRNOTAVAIL:
                 /* We're probably in TIME_WAIT. Get rid of existing socket,
                  * and retry