unsigned int vcc_poll(struct file *file, struct socket *sock, poll_table *wait)
{
	struct sock *sk = sock->sk;
	struct atm_vcc *vcc;
	unsigned int mask;

	sock_poll_wait(file, sk_sleep(sk), wait);
	mask = 0;

	vcc = ATM_SD(sock);

	/* exceptional events */
	if (sk->sk_err)
		mask = POLLERR;

	if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
	    test_bit(ATM_VF_CLOSE, &vcc->flags))
		mask |= POLLHUP;

	/* readable? */
	if (!skb_queue_empty(&sk->sk_receive_queue))
		mask |= POLLIN | POLLRDNORM;

	/* writable? */
	if (sock->state == SS_CONNECTING &&
	    test_bit(ATM_VF_WAITING, &vcc->flags))
		return mask;

	if (vcc->qos.txtp.traffic_class != ATM_NONE &&
	    vcc_writable(sk))
		mask |= POLLOUT | POLLWRNORM | POLLWRBAND;

	return mask;
}

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