MCX_CMDQ_SLOT_POLL
if (slot == MCX_CMDQ_SLOT_POLL) {
sizeof(pmtu), MCX_CMDQ_SLOT_POLL);
sizeof(pmtu), MCX_CMDQ_SLOT_POLL);
sizeof(ptys), MCX_CMDQ_SLOT_POLL) != 0) {
slot = MCX_CMDQ_SLOT_POLL;
&mcam, sizeof(mcam), MCX_CMDQ_SLOT_POLL) != 0) {
&mtcap, sizeof(mtcap), MCX_CMDQ_SLOT_POLL) != 0) {