HIDIOCGRDESC
case HIDIOCGRDESC:
res = ioctl(fd, HIDIOCGRDESC, &rpt_desc);
err = ioctl(self->hidraw_fd, HIDIOCGRDESC, &rpt_desc);
err = ioctl(self->hidraw_fd, HIDIOCGRDESC, &desc);
err = ioctl(self->hidraw_fd, HIDIOCGRDESC, &desc);