mmc_remove_host_sysfs(host);
void mmc_remove_host(struct mmc_host *host){	struct list_head *l, *n;	list_for_each_safe(l, n, &host->cards) {		struct mmc_card *card = mmc_list_to_card(l);		mmc_remove_card(card);	}	mmc_power_off(host);}