eMMC/UFS

Linux 6.18.37 LTS: drivers/mmc/core/core.c
Linux 6.18.37 LTS: drivers/mmc/host/sdhci.c
Linux 6.18.37 LTS: drivers/ufs/core/ufshcd.c

		mrq->done(mrq);
}

EXPORT_SYMBOL(mmc_request_done);

static void __mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
{
	int err;

	/* Assumes host controller has been runtime resumed by mmc_claim_host */
	err = mmc_retune(host);
	if (err) {
		mrq->cmd->error = err;
		mmc_request_done(host, mrq);
		return;
	}

	/*
	 * For sdio rw commands we must wait for card busy otherwise some
	 * sdio devices won't work properly.
	 * And bypass I/O abort, reset and bus suspend operations.
	 */
	if (sdio_is_io_busy(mrq->cmd->opcode, mrq->cmd->arg) &&
	    host->ops->card_busy) {
		int tries = 500; /* Wait aprox 500ms at maximum */

		while (host->ops->card_busy(host) && --tries)
			mmc_delay(1);

		if (tries == 0) {
			mrq->cmd->error = -EBUSY;
			mmc_request_done(host, mrq);
			return;
		}
	}

	if (mrq->cap_cmd_during_tfr) {
		host->ongoing_mrq = mrq;
		/*
		 * Retry path could come through here without having waiting on

 *                                                                           *
 * MMC callbacks                                                             *
 *                                                                           *
\*****************************************************************************/

void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
	struct sdhci_host *host = mmc_priv(mmc);
	struct mmc_command *cmd;
	unsigned long flags;
	bool present;

	/* Firstly check card presence */
	present = mmc->ops->get_cd(mmc);

	spin_lock_irqsave(&host->lock, flags);

	sdhci_led_activate(host);

	if (sdhci_present_error(host, mrq->cmd, present))
		goto out_finish;

	cmd = sdhci_manual_cmd23(host, mrq) ? mrq->sbc : mrq->cmd;

	if (!sdhci_send_command_retry(host, cmd, flags))
		goto out_finish;

	spin_unlock_irqrestore(&host->lock, flags);

	return;

out_finish:
	sdhci_finish_mrq(host, mrq);
	spin_unlock_irqrestore(&host->lock, flags);
}
EXPORT_SYMBOL_GPL(sdhci_request);

int sdhci_request_atomic(struct mmc_host *mmc, struct mmc_request *mrq)
{
	struct sdhci_host *host = mmc_priv(mmc);