USB_GET_DEVICE_DESC
if (ioctl(f, IOUSB(USB_GET_DEVICE_DESC), &ddesc)) {
args->cmd = USB_GET_DEVICE_DESC;
case USB_GET_DEVICE_DESC:
case USB_GET_DEVICE_DESC:
if (ioctl(fd, USB_GET_DEVICE_DESC, &desc) < 0) {
fd, USB_GET_DEVICE_DESC, &desc,