Commit 6972096a authored by Ulf Hansson's avatar Ulf Hansson
Browse files

mmc: core: Split up mmc_poll_for_busy() 



To make the code more readable, move the part that gets the busy status of
the card out into a separate function, mmc_busy_status(). Then call it from
mmc_poll_for_busy().

Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Tested-by: default avatarBaolin Wang <baolin.wang7@gmail.com>
Tested-by: default avatarLudovic Barre <ludovic.barre@st.com>
Reviewed-by: default avatarLudovic Barre <ludovic.barre@st.com>
Link: https://lore.kernel.org/r/20200204085449.32585-6-ulf.hansson@linaro.org
parent 02098ccd

drivers/mmc/core/mmc_ops.c

+31 −16
Original line number Diff line number Diff line
@@ -444,6 +444,34 @@ int mmc_switch_status(struct mmc_card *card, bool crc_err_fatal) 
	return mmc_switch_status_error(card->host, status);

}



static int mmc_busy_status(struct mmc_card *card, bool retry_crc_err,

			   bool *busy)

{

	struct mmc_host *host = card->host;

	u32 status = 0;

	int err;



	if (host->ops->card_busy) {

		*busy = host->ops->card_busy(host);

		return 0;

	}



	err = mmc_send_status(card, &status);

	if (retry_crc_err && err == -EILSEQ) {

		*busy = true;

		return 0;

	}

	if (err)

		return err;



	err = mmc_switch_status_error(card->host, status);

	if (err)

		return err;



	*busy = R1_CURRENT_STATE(status) == R1_STATE_PRG;

	return 0;

}



static int mmc_poll_for_busy(struct mmc_card *card, unsigned int timeout_ms,

			bool send_status, bool retry_crc_err)

{
@@ -451,7 +479,6 @@ static int mmc_poll_for_busy(struct mmc_card *card, unsigned int timeout_ms, 
	int err;

	unsigned long timeout;

	unsigned int udelay = 32, udelay_max = 32768;

	u32 status = 0;

	bool expired = false;

	bool busy = false;
@@ -473,21 +500,9 @@ static int mmc_poll_for_busy(struct mmc_card *card, unsigned int timeout_ms, 
		 */

		expired = time_after(jiffies, timeout);



		if (host->ops->card_busy) {

			busy = host->ops->card_busy(host);

		} else {

			err = mmc_send_status(card, &status);

			if (retry_crc_err && err == -EILSEQ) {

				busy = true;

			} else if (err) {

				return err;

			} else {

				err = mmc_switch_status_error(host, status);

		err = mmc_busy_status(card, retry_crc_err, &busy);

		if (err)

			return err;

				busy = R1_CURRENT_STATE(status) == R1_STATE_PRG;

			}

		}



		/* Timeout if the device still remains busy. */

		if (expired && busy) {

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