[SCSI] iscsi_tcp: Change iscsi_sw_tcp_conn_restore_callbacks arguments

This patch changes the arguments to iscsi_sw_tcp_conn_restore_callbacks,
so that it works like the function to set the callbacks and because
in upcoming patches we need a iscsi_conn.

Signed-off-by: Avi Kaplan <savik751@gmail.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

drivers/scsi/iscsi_tcp.c

@@ -206,8 +206,10 @@ static void iscsi_sw_tcp_conn_set_callbacks(struct iscsi_conn *conn)
 }
 
 static void
-iscsi_sw_tcp_conn_restore_callbacks(struct iscsi_sw_tcp_conn *tcp_sw_conn)
+iscsi_sw_tcp_conn_restore_callbacks(struct iscsi_conn *conn)
 {
+	struct iscsi_tcp_conn *tcp_conn = conn->dd_data;
+	struct iscsi_sw_tcp_conn *tcp_sw_conn = tcp_conn->dd_data;
 	struct sock *sk = tcp_sw_conn->sock->sk;
 
 	/* restore socket callbacks, see also: iscsi_conn_set_callbacks() */
@@ -555,7 +557,7 @@ static void iscsi_sw_tcp_release_conn(struct iscsi_conn *conn)
 		return;
 
 	sock_hold(sock->sk);
-	iscsi_sw_tcp_conn_restore_callbacks(tcp_sw_conn);
+	iscsi_sw_tcp_conn_restore_callbacks(conn);
 	sock_put(sock->sk);
 
 	spin_lock_bh(&session->lock);