XHCI_CMD_RS
(sc->opregs.usbcmd & XHCI_CMD_RS) == 0 ||
if (cmd & XHCI_CMD_RS) {
do_intr = (sc->opregs.usbcmd & XHCI_CMD_RS) == 0;
sc->opregs.usbcmd |= XHCI_CMD_RS;
sc->opregs.usbcmd &= ~XHCI_CMD_RS;
cmd |= sc->opregs.usbcmd & XHCI_CMD_RS;
cmdreg &= ~(XHCI_CMD_RS | XHCI_CMD_INTE);
reg |= XHCI_CMD_RS;