From: Ulf Hansson ulf.hansson@linaro.org
commit 24ed3bd01d6a844fd5e8a75f48d0a3d10ed71bf9 upstream
The timeout values used while waiting for a CMD6 for BKOPS or a CACHE_FLUSH to complete, are not defined by the eMMC spec. However, a timeout of 10 minutes as is currently being used, is just silly for both of these cases. Instead, let's specify more reasonable timeouts, 120s for BKOPS and 30s for CACHE_FLUSH.
Signed-off-by: Ulf Hansson ulf.hansson@linaro.org Link: https://lore.kernel.org/r/20200122142747.5690-2-ulf.hansson@linaro.org Signed-off-by: Florian Fainelli f.fainelli@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/mmc/core/mmc_ops.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
--- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -23,7 +23,9 @@ #include "host.h" #include "mmc_ops.h"
-#define MMC_OPS_TIMEOUT_MS (10 * 60 * 1000) /* 10 minute timeout */ +#define MMC_OPS_TIMEOUT_MS (10 * 60 * 1000) /* 10min*/ +#define MMC_BKOPS_TIMEOUT_MS (120 * 1000) /* 120s */ +#define MMC_CACHE_FLUSH_TIMEOUT_MS (30 * 1000) /* 30s */
static const u8 tuning_blk_pattern_4bit[] = { 0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc, @@ -979,7 +981,7 @@ void mmc_start_bkops(struct mmc_card *ca
mmc_claim_host(card->host); if (card->ext_csd.raw_bkops_status >= EXT_CSD_BKOPS_LEVEL_2) { - timeout = MMC_OPS_TIMEOUT_MS; + timeout = MMC_BKOPS_TIMEOUT_MS; use_busy_signal = true; } else { timeout = 0; @@ -1022,7 +1024,8 @@ int mmc_flush_cache(struct mmc_card *car (card->ext_csd.cache_size > 0) && (card->ext_csd.cache_ctrl & 1)) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, - EXT_CSD_FLUSH_CACHE, 1, 0); + EXT_CSD_FLUSH_CACHE, 1, + MMC_CACHE_FLUSH_TIMEOUT_MS); if (err) pr_err("%s: cache flush error %d\n", mmc_hostname(card->host), err);