mmc_card_id
md->disk->disk_name, mmc_card_id(card), mmc_card_name(card),
rpmb_name, mmc_card_id(card), mmc_card_name(card), cap_str,
root = debugfs_create_dir(mmc_card_id(card), host->debugfs_root);
mmc_hostname(test->card->host), mmc_card_id(test->card));
dev_set_name(&func->dev, "%s:%d", mmc_card_id(func->card), func->num);
mmc_card_id(card), ret);
mmc_card_id(card));