usb_set_address_settle
unsigned int usb_set_address_settle = USB_SET_ADDRESS_SETTLE;
} else if (p == &usb_set_address_settle) {
TUNABLE_INT("hw.usb.timings.set_address_settle", (int *)&usb_set_address_settle);
&usb_set_address_settle, sizeof(usb_set_address_settle),
extern unsigned int usb_set_address_settle;
USB_MS_TO_TICKS(usb_set_address_settle));