mmc: sdhci-msm: Use maximum possible data timeout value

The Qcom SD controller defines the usage of 0xF in data
timeout counter register (0x2E) which is actually a reserved
bit as per specification. This would result in maximum of 21.26 secs
timeout value.

Some SDcard taking more time than 2.67secs (timeout value corresponding
to 0xE) and with that observed data timeout errors.
So increasing the timeout value to max possible timeout.

Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Sarthak Garg <sartgarg@codeaurora.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/1628232901-30897-3-git-send-email-sartgarg@codeaurora.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index 290a14c..50c71e0 100644 (file)
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -2714,6 +2714,9 @@ static int sdhci_msm_probe(struct platform_device *pdev)
 
        msm_host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_NEED_RSP_BUSY;
 
+       /* Set the timeout value to max possible */
+       host->max_timeout_count = 0xF;
+
        pm_runtime_get_noresume(&pdev->dev);
        pm_runtime_set_active(&pdev->dev);
        pm_runtime_enable(&pdev->dev);