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mmc: core: Reset HPI enabled state during re-init and in case of errors

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commit a0741ba40a upstream.

During a re-initialization of the eMMC card, we may fail to re-enable HPI.
In these cases, that isn't properly reflected in the card->ext_csd.hpi_en
bit, as it keeps being set. This may cause following attempts to use HPI,
even if's not enabled. Let's fix this!

Fixes: eb0d8f135b ("mmc: core: support HPI send command")
Cc: <stable@vger.kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ulf Hansson
2018-12-10 17:52:36 +01:00
committed by Greg Kroah-Hartman
parent fe646761cb
commit 8af6fad484
1 changed files with 3 additions and 1 deletions
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4
drivers/mmc/core/mmc.c
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@@ -1755,9 +1755,11 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
if (err) {
pr_warn("%s: Enabling HPI failed\n",
mmc_hostname(card->host));
card->ext_csd.hpi_en = 0;
err = 0;
} else
} else {
card->ext_csd.hpi_en = 1;
}
}
/*