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Commit 96241544 authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont Committed by David S. Miller
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Phonet: allow multiple listen() and fix small race condition 



Signed-off-by: default avatarRémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b08cd667

net/phonet/socket.c

+5 −5
Original line number Diff line number Diff line
@@ -428,19 +428,19 @@ static int pn_socket_listen(struct socket *sock, int backlog) 
	struct sock *sk = sock->sk;

	int err = 0;



	if (sock->state != SS_UNCONNECTED)

		return -EINVAL;

	if (pn_socket_autobind(sock))

		return -ENOBUFS;



	lock_sock(sk);

	if (sk->sk_state != TCP_CLOSE) {

	if (sock->state != SS_UNCONNECTED) {

		err = -EINVAL;

		goto out;

	}



	if (sk->sk_state != TCP_LISTEN) {

		sk->sk_state = TCP_LISTEN;

		sk->sk_ack_backlog = 0;

	}

	sk->sk_max_ack_backlog = backlog;

out:

	release_sock(sk);