USB_EVENT_CTRLR_DETACH  844 dev/usb/usb.c  	usb_add_event(USB_EVENT_CTRLR_DETACH, &ue);
USB_EVENT_CTRLR_DETACH  638 dev/usb/usb.h  #define USB_EVENT_IS_DETACH(n) ((n) == USB_EVENT_CTRLR_DETACH || (n) == USB_EVENT_DEVICE_DETACH || (n) == USB_EVENT_DRIVER_DETACH)