mmc_get_ext_csd
ret = mmc_get_ext_csd(card, ext_csd);
err = mmc_get_ext_csd(card, &ext_csd);
err = mmc_get_ext_csd(card, &bw_ext_csd);
EXPORT_SYMBOL_GPL(mmc_get_ext_csd);
err = mmc_get_ext_csd(card, &ext_csd);
ret = mmc_get_ext_csd(card, &ext_csd);
int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd);