HelenOS sources

usb_device_init   540 uspace/lib/usbdev/src/devdrv.c 	return usb_device_init(usb_dev, ddf_dev, desc, err);
usb_device_init   568 uspace/lib/usbdev/src/devdrv.c 	ret = usb_device_init(usb_dev, NULL, NULL, &dummy);