usb_resume_recovery
TUNABLE_INT("hw.usb.timings.resume_recovery", (int *)&usb_resume_recovery);
&usb_resume_recovery, sizeof(usb_resume_recovery),
unsigned int usb_resume_recovery = USB_RESUME_RECOVERY;
} else if (p == &usb_resume_recovery) {
extern unsigned int usb_resume_recovery;