Adrian Hunter 61e53bd004 mmc: sdhci: Fix recovery from tuning timeout ... Clearing the tuning bits should reset the tuning circuit. However there is more to do. Reset the command and data lines for good measure, and then for eMMC ensure the card is not still trying to process a tuning command by sending a stop command. Note the JEDEC eMMC specification says the stop command (CMD12) can be used to stop a tuning command (CMD21) whereas the SD specification is silent on the subject with respect to the SD tuning command (CMD19). Considering that CMD12 is not a valid SDIO command, the stop command is sent only when the tuning command is CMD21 i.e. for eMMC. That addresses cases seen so far which have been on eMMC. Note that this replaces the commit fe5fb2e3b5 ("mmc: sdhci: Reset cmd and data circuits after tuning failure") which is being reverted for v4.9+. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Dan O'Donovan <dan@emutex.com> Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>		2016-12-05 14:16:20 +01:00
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card	mmc: mmc_test: remove BUG_ONs and deploy error handling	2016-12-05 10:31:13 +01:00
core	mmc: mmc: Relax checking for switch errors after HS200 switch	2016-12-05 14:15:46 +01:00
host	mmc: sdhci: Fix recovery from tuning timeout	2016-12-05 14:16:20 +01:00
Kconfig
Makefile	mmc: sdhci-pci: add platform data	2012-01-11 23:58:47 -05:00