xhci_start
xdbc.xhci_start = val64;
base = ioremap(xdbc.xhci_start, xdbc.xhci_length);
u64 xhci_start;
xhci_start(xhci);
if (xhci_start(xhci)) {
int xhci_start(struct xhci_hcd *xhci);