net/smc: always call the POLL_IN part of sk_wake_async

Wake up reading file descriptors for a closing socket as well, otherwise
some socket applications may stall.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/smc/smc_rx.c

@@ -36,11 +36,10 @@ static void smc_rx_data_ready(struct sock *sk)
 	if (skwq_has_sleeper(wq))
 		wake_up_interruptible_sync_poll(&wq->wait, POLLIN | POLLPRI |
 						POLLRDNORM | POLLRDBAND);
+	sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
 	if ((sk->sk_shutdown == SHUTDOWN_MASK) ||
 	    (sk->sk_state == SMC_CLOSED))
 		sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_HUP);
-	else
-		sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
 	rcu_read_unlock();
 }