usbd_add_dev_event 1114 dev/usb/usb_subr.c 	usbd_add_dev_event(USB_EVENT_DEVICE_ATTACH, dev);
usbd_add_dev_event 1366 dev/usb/usb_subr.c 	usbd_add_dev_event(USB_EVENT_DEVICE_DETACH, dev);
usbd_add_dev_event  161 dev/usb/usbdi.h void usbd_add_dev_event(int, usbd_device_handle);