FLAG_DEL
if (test_bit(FLAG_DEL, &chan->flags)) {
if (test_bit(FLAG_DEL, &chan->flags)) {
if (test_bit(FLAG_DEL, &chan->flags))
if (test_bit(FLAG_DEL, &chan->flags))
if (test_bit(FLAG_DEL, &chan->flags)) {
if (test_bit(FLAG_DEL, &chan->flags))
if (!test_and_set_bit(FLAG_DEL, &chan->flags)) {