FORMAT_SCAN_ELEMENTS_DIR
FORMAT_SCAN_ELEMENTS_DIR, dev_dir_name, buffer_idx);
FORMAT_SCAN_ELEMENTS_DIR
ret = asprintf(&scan_el_dir, FORMAT_SCAN_ELEMENTS_DIR, device_dir, buffer_idx);
ret = asprintf(&scan_el_dir, FORMAT_SCAN_ELEMENTS_DIR, device_dir, buffer_idx);