ACK: [Trusty/Utopic/Vivid/Wily][PATCH] mmc: sdhci-pci: set the clear transfer mode register quirk for O2Micro

Brad Figg brad.figg at canonical.com
Mon Sep 14 14:33:14 UTC 2015


On Fri, Sep 11, 2015 at 01:31:09PM +0800, Adam Lee wrote:
> 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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-- 
Brad Figg brad.figg at canonical.com http://www.canonical.com




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