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authorAdrian Hunter <adrian.hunter@intel.com>2016-02-09 16:12:38 +0200
committerUlf Hansson <ulf.hansson@linaro.org>2016-02-11 11:39:56 +0100
commit6a645dd87a5a506779810d7d9935c25fc2ef4687 (patch)
treed57d982f97dbf00c895664becc0cad71cd16596b /drivers/scsi/script_asm.pl
parent163cbe31e5163459908a41a2b4e0d33a28fd557a (diff)
mmc: sdhci-acpi: Fix card detect race for Intel BXT/APL
Intel BXT/APL use a card detect GPIO however the host controller will not enable bus power unless it's card detect also reflects the presence of a card. Unfortunately those 2 things race which can result in commands not starting, after which the controller does nothing and there is a 10 second wait for the driver's 10-second timer to timeout. That is fixed by having the driver look also at the present state register to determine if the card is present. Consequently, provide a 'get_cd' mmc host operation for BXT/APL that does that. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: stable@vger.kernel.org # v4.4+ Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/scsi/script_asm.pl')
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