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mmc: core: complete HS400 before checking status

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[ Upstream commit b0e370b95a ]

We don't have a reproducible error case, yet our BSP team suggested that
the mmc_switch_status() command in mmc_select_hs400() should come after
the callback into the driver completing HS400 setup. It makes sense to
me because we want the status of a fully setup HS400, so it will
increase the reliability of the mmc_switch_status() command.

Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Fixes: ba6c7ac3a2 ("mmc: core: more fine-grained hooks for HS400 tuning")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wolfram Sang
2019-06-11 22:03:43 +02:00
committed by Greg Kroah-Hartman
parent 2da80536f6
commit 5533d9ed41
1 changed files with 3 additions and 3 deletions
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6
drivers/mmc/core/mmc.c
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@@ -1209,13 +1209,13 @@ static int mmc_select_hs400(struct mmc_card *card)
mmc_set_timing(host, MMC_TIMING_MMC_HS400);
mmc_set_bus_speed(card);
if (host->ops->hs400_complete)
host->ops->hs400_complete(host);
err = mmc_switch_status(card);
if (err)
goto out_err;
if (host->ops->hs400_complete)
host->ops->hs400_complete(host);
return 0;
out_err: