Commit fe72d08a authored by Bean Huo's avatar Bean Huo Committed by Ulf Hansson
Browse files

mmc: core: Issue HPI in case the BKOPS timed out 



If the BKOPS timed out, the card is probably still busy in the
R1_STATE_PRG. Rather than continue as nothing has happened and hitting and
error for the next command being sent, let's try to abort the running BKOPS
by sending a HPI command to get back into R1_STATE_TRAN.

Signed-off-by: default avatarBean Huo <beanhuo@micron.com>
Link: https://lore.kernel.org/r/20210817224208.153652-2-huobean@gmail.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent f6f60707

drivers/mmc/core/mmc_ops.c

+9 −2
Original line number Diff line number Diff line
@@ -959,8 +959,15 @@ void mmc_run_bkops(struct mmc_card *card) 
	 */

	err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,

			 EXT_CSD_BKOPS_START, 1, MMC_BKOPS_TIMEOUT_MS);

	if (err)

		pr_warn("%s: Error %d starting bkops\n",

	/*

	 * If the BKOPS timed out, the card is probably still busy in the

	 * R1_STATE_PRG. Rather than continue to wait, let's try to abort

	 * it with a HPI command to get back into R1_STATE_TRAN.

	 */

	if (err == -ETIMEDOUT && !mmc_interrupt_hpi(card))

		pr_warn("%s: BKOPS aborted\n", mmc_hostname(card->host));

	else if (err)

		pr_warn("%s: Error %d running bkops\n",

			mmc_hostname(card->host), err);



	mmc_retune_release(card->host);