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authorUlf Hansson <ulf.hansson@linaro.org>2020-03-10 15:05:02 +0100
committerUlf Hansson <ulf.hansson@linaro.org>2020-03-11 16:11:39 +0100
commit055e04830d4544c57f2a5192a26c9e25915c29c0 (patch)
tree93fd74a87e8b59252a43a74d1bb15e783e602802 /drivers/mmc
parent43cc64e5221cc6741252b64bc4531dd1eefb733d (diff)
downloadlinux-055e04830d4544c57f2a5192a26c9e25915c29c0.tar.bz2
mmc: sdhci-omap: Fix busy detection by enabling MMC_CAP_NEED_RSP_BUSY
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>
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 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;