cdrom_get_last_written
EXPORT_SYMBOL(cdrom_get_last_written);
ret = cdrom_get_last_written(cdi, next_writable);
ret = cdrom_get_last_written(cdi, &last);
if (!cdrom_get_last_written(&cd->cdi, &last_written))
if (!cdi || cdrom_get_last_written(cdi, &lblock) || lblock == 0) {
extern int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written);