From 89ab066d4229acd32e323f1569833302544a4186 Mon Sep 17 00:00:00 2001 From: Karsten Graul Date: Tue, 23 Oct 2018 13:40:39 +0200 Subject: Revert "net: simplify sock_poll_wait" This reverts commit dd979b4df817e9976f18fb6f9d134d6bc4a3c317. This broke tcp_poll for SMC fallback: An AF_SMC socket establishes an internal TCP socket for the initial handshake with the remote peer. Whenever the SMC connection can not be established this TCP socket is used as a fallback. All socket operations on the SMC socket are then forwarded to the TCP socket. In case of poll, the file->private_data pointer references the SMC socket because the TCP socket has no file assigned. This causes tcp_poll to wait on the wrong socket. Signed-off-by: Karsten Graul Signed-off-by: David S. Miller --- net/nfc/llcp_sock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/nfc') diff --git a/net/nfc/llcp_sock.c b/net/nfc/llcp_sock.c index dd4adf8b1167..ae296273ce3d 100644 --- a/net/nfc/llcp_sock.c +++ b/net/nfc/llcp_sock.c @@ -556,7 +556,7 @@ static __poll_t llcp_sock_poll(struct file *file, struct socket *sock, pr_debug("%p\n", sk); - sock_poll_wait(file, wait); + sock_poll_wait(file, sock, wait); if (sk->sk_state == LLCP_LISTEN) return llcp_accept_poll(sk); -- cgit