It has turned out that the sdhci-omap controller requires the R1B response, for commands that has this response associated with them. So, converting from an R1B to an R1 response for a CMD6 for example, leads to problems with the HW busy detection support.

Fix this by informing the mmc core about the requirement, via setting the host cap, MMC_CAP_NEED_RSP_BUSY.

Reported-by: Naresh Kamboju naresh.kamboju@linaro.org Reported-by: Anders Roxell anders.roxell@linaro.org Reported-by: Faiz Abbas faiz_abbas@ti.com Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson ulf.hansson@linaro.org --- drivers/mmc/host/sdhci-omap.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c index 882053151a47..c4978177ef88 100644 --- a/drivers/mmc/host/sdhci-omap.c +++ b/drivers/mmc/host/sdhci-omap.c @@ -1192,6 +1192,9 @@ static int sdhci_omap_probe(struct platform_device *pdev) if (of_find_property(dev->of_node, "dmas", NULL)) sdhci_switch_external_dma(host, true);

+ /* R1B responses is required to properly manage HW busy detection. */ + mmc->caps |= MMC_CAP_NEED_RSP_BUSY; + ret = sdhci_setup_host(host); if (ret) goto err_put_sync;