SCMD_STATE_COMPLETE
if (test_and_set_bit(SCMD_STATE_COMPLETE, &scmd->state))
if (unlikely(test_and_set_bit(SCMD_STATE_COMPLETE, &cmd->state)))
clear_bit(SCMD_STATE_COMPLETE, &cmd->state);
if (!test_bit(SCMD_STATE_COMPLETE, &cmd->state)) {