mmc: core: Flag re-tuning is needed on CRC errors

CRC errors could possibly be alleviated by
re-tuning so flag re-tuning needed in those cases.
Note this has no effect if re-tuning has not been
enabled.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index adb64087a28a97f5882766ddb4d27a0697f92f58..c93062bc4f2d23ee3f8ac883e7e7edb0d94bf736 100644 (file)
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -133,6 +133,12 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
        struct mmc_command *cmd = mrq->cmd;
        int err = cmd->error;
 
+       /* Flag re-tuning needed on CRC errors */
+       if (err == -EILSEQ || (mrq->sbc && mrq->sbc->error == -EILSEQ) ||
+           (mrq->data && mrq->data->error == -EILSEQ) ||
+           (mrq->stop && mrq->stop->error == -EILSEQ))
+               mmc_retune_needed(host);
+
        if (err && cmd->retries && mmc_host_is_spi(host)) {
                if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)
                        cmd->retries = 0;