Commit fe5fb2e3 authored by Adrian Hunter's avatar Adrian Hunter Committed by Ulf Hansson
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mmc: sdhci: Reset cmd and data circuits after tuning failure 



To prevent subsequent commands failing, ensure the cmd and data circuits
are reset after a tuning timeout.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 69b962a6

drivers/mmc/host/sdhci.c

+4 −0
Original line number Diff line number Diff line
@@ -2086,6 +2086,10 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) 


		if (!host->tuning_done) {

			pr_info(DRIVER_NAME ": Timeout waiting for Buffer Read Ready interrupt during tuning procedure, falling back to fixed sampling clock\n");



			sdhci_do_reset(host, SDHCI_RESET_CMD);

			sdhci_do_reset(host, SDHCI_RESET_DATA);



			ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);

			ctrl &= ~SDHCI_CTRL_TUNED_CLK;

			ctrl &= ~SDHCI_CTRL_EXEC_TUNING;