struct avdtp *avdtp_ref(struct avdtp *session)
{
	session->ref++;
	DBG("%p: ref=%d", session, session->ref);
	remove_disconnect_timer(session);
	return session;
}
struct avdtp *avdtp_ref(struct avdtp *session)
{
	session->ref++;
	DBG("%p: ref=%d", session, session->ref);
	remove_disconnect_timer(session);
	return session;
}