PORT_CHANGE_PESC
change_status |= PORT_CHANGE_PESC;
if (change_status & PORT_CHANGE_PESC) {
uhcip->uhci_root_hub.rh_port_changes[port] &= ~PORT_CHANGE_PESC;
cs |= PORT_CHANGE_PESC;
if (change & PORT_CHANGE_PESC) {
if (*change & PORT_CHANGE_PESC & ack_flag) {
PORT_CHANGE_PESC);