CONF_REQ_SENT
if (test_bit(CONF_REQ_SENT, &chan->conf_state) ||
set_bit(CONF_REQ_SENT, &chan->conf_state);
if (test_and_set_bit(CONF_REQ_SENT, &chan->conf_state))
if (chan && !test_bit(CONF_REQ_SENT, &chan->conf_state) &&
set_bit(CONF_REQ_SENT, &chan->conf_state);
if (test_and_set_bit(CONF_REQ_SENT, &chan->conf_state))
if (!test_and_set_bit(CONF_REQ_SENT, &chan->conf_state)) {
if (!test_bit(CONF_REQ_SENT, &chan->conf_state) &&
set_bit(CONF_REQ_SENT, &chan->conf_state);