]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
mmc: sdhci: Fix data command CRC error handling
authorAdrian Hunter <adrian.hunter@intel.com>
Thu, 15 Nov 2018 13:53:41 +0000 (15:53 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 27 Apr 2019 07:35:39 +0000 (09:35 +0200)
commitf83cf258b928b94a908d88e692f14ef459f927db
tree2acf6807cfae0eca1be5c5ec10441df437530cd0
parent4cec35e8e251eb953869c199c2a33e841e422fc4
mmc: sdhci: Fix data command CRC error handling

[ Upstream commit 4bf780996669280171c9cd58196512849b93434e ]

Existing data command CRC error handling is non-standard and does not work
with some Intel host controllers. Specifically, the assumption that the host
controller will continue operating normally after the error interrupt,
is not valid. Change the driver to handle the error in the same manner
as a data CRC error, taking care to ensure that the data line reset is
done for single or multi-block transfers, and it is done before
unmapping DMA.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/mmc/host/sdhci.c