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authorUlf Hansson <ulf.hansson@linaro.org>2020-03-24 21:07:59 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-04-02 16:28:09 +0300
commit23161bed631a001b6e7c662a2e147287a3696731 (patch)
tree26bdcebae62379c61f64f288feea1e3467a11321 /drivers/mmc
parentd091259b8d7abca0c2ab78b394315494393f6dfc (diff)
downloadlinux-23161bed631a001b6e7c662a2e147287a3696731.tar.xz
mmc: sdhci-omap: Fix busy detection by enabling MMC_CAP_NEED_RSP_BUSY
[ Upstream commit 055e04830d4544c57f2a5192a26c9e25915c29c0 ] 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> Tested-by: Anders Roxell <anders.roxell@linaro.org> Tested-by: Faiz Abbas <faiz_abbas@ti.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/sdhci-omap.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c
index e9793d8e83a0..05ade7a2dd24 100644
--- a/drivers/mmc/host/sdhci-omap.c
+++ b/drivers/mmc/host/sdhci-omap.c
@@ -1147,6 +1147,9 @@ static int sdhci_omap_probe(struct platform_device *pdev)
host->mmc_host_ops.execute_tuning = sdhci_omap_execute_tuning;
host->mmc_host_ops.enable_sdio_irq = sdhci_omap_enable_sdio_irq;
+ /* 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;