[Trusty/Utopic/Vivid/Wily][PATCH] mmc: sdhci-pci: set the clear transfer mode register quirk for O2Micro
Adam Lee
adam.lee at canonical.com
Fri Sep 11 05:31:09 UTC 2015
BugLink: https://bugs.launchpad.net/bugs/1472843
This patch fixes MMC not working issue on O2Micro/BayHub Host, which
requires transfer mode register to be cleared when sending no DMA
command.
Signed-off-by: Peter Guo <peter.guo at bayhubtech.com>
Signed-off-by: Adam Lee <adam.lee at canonical.com>
Cc: stable <stable at vger.kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson at linaro.org>
(cherry picked from commit 143b648ddf1583905fa15d32be27a31442fc7933)
Signed-off-by: Adam Lee <adam.lee at canonical.com>
---
drivers/mmc/host/sdhci-pci.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 0955777..0339120 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -517,6 +517,7 @@ static int jmicron_resume(struct sdhci_pci_chip *chip)
static const struct sdhci_pci_fixes sdhci_o2 = {
.probe = sdhci_pci_o2_probe,
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+ .quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
.probe_slot = sdhci_pci_o2_probe_slot,
.resume = sdhci_pci_o2_resume,
};
--
2.5.1
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