XHCI_MAX_COMMANDS
if (i == (XHCI_MAX_COMMANDS - 1)) {
(XHCI_MAX_COMMANDS + XHCI_MAX_EVENTS) * sizeof(xhci_trb)
memset(fErst, 0, (XHCI_MAX_COMMANDS + XHCI_MAX_EVENTS) * sizeof(xhci_trb)
fCmdRing[XHCI_MAX_COMMANDS - 1].address = dmaAddress;