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Commit ad9be7ff authored by Avri Altman's avatar Avri Altman Committed by Ulf Hansson
Browse files

mmc: core: Add sd discard timeout 



The busy timeout is 250msec per discard command.

Signed-off-by: default avatarAvri Altman <avri.altman@wdc.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent bc47e2f6

drivers/mmc/core/core.c

+7 −0
Original line number Diff line number Diff line
@@ -51,6 +51,7 @@ 


/* The max erase timeout, used when host->max_busy_timeout isn't specified */

#define MMC_ERASE_TIMEOUT_MS	(60 * 1000) /* 60 s */

#define SD_DISCARD_TIMEOUT_MS	(250)



static const unsigned freqs[] = { 400000, 300000, 200000, 100000 };
@@ -1619,6 +1620,12 @@ static unsigned int mmc_sd_erase_timeout(struct mmc_card *card, 
{

	unsigned int erase_timeout;



	/* for DISCARD none of the below calculation applies.

	 * the busy timeout is 250msec per discard command.

	 */

	if (arg == SD_DISCARD_ARG)

		return SD_DISCARD_TIMEOUT_MS;



	if (card->ssr.erase_timeout) {

		/* Erase timeout specified in SD Status Register (SSR) */

		erase_timeout = card->ssr.erase_timeout * qty +