diff options
| author | Avri Altman <avri.altman@wdc.com> | 2019-02-26 16:10:25 +0100 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2019-02-28 09:16:12 +0100 |
| commit | ad9be7fff3e729287f61a2a5e811c03090003fff (patch) | |
| tree | 0e7cef6f796fa5bdd866b05225dbff42f2258f00 /drivers/mmc/core | |
| parent | mmc: core: Add discard support to sd (diff) | |
| download | linux-ad9be7fff3e729287f61a2a5e811c03090003fff.tar.xz linux-ad9be7fff3e729287f61a2a5e811c03090003fff.zip | |
mmc: core: Add sd discard timeout
The busy timeout is 250msec per discard command.
Signed-off-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/core')
| -rw-r--r-- | drivers/mmc/core/core.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 681b089f669a..2d415cb1889a 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -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 + |