On 10/02/16 22:25, Al Cooper wrote:
> sdhci_add_host() allows the Host Controller Capability registers
> to be supplied by the calling driver by using
> SDHCI_QUIRK_MISSING_CAPS, but the check for the Capabilities bit
> SDHCI_CAN_64BIT doesn't use the applied value and instead reads
> the Host register directly. This change uses the supplied "caps"
> register instead of reading the host register.
>
> This change will allow a calling driver to simply clear the
> SDHCI_CAN_64BIT bit in "caps" to handle some cases of
> SDHCI_QUIRK2_BROKEN_64_BIT_DMA.
>
> Signed-off-by: Al Cooper <alcooperx@xxxxxxxxx>
> ---
> drivers/mmc/host/sdhci.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
> index d622435..ba3b072 100644
> --- a/drivers/mmc/host/sdhci.c
> +++ b/drivers/mmc/host/sdhci.c
> @@ -2926,7 +2926,7 @@ int sdhci_add_host(struct sdhci_host *host)
> * SDHCI_QUIRK2_BROKEN_64_BIT_DMA must be left to the drivers to
> * implement.
> */
> - if (sdhci_readl(host, SDHCI_CAPABILITIES) & SDHCI_CAN_64BIT)
> + if (caps[0] & SDHCI_CAN_64BIT)
> host->flags |= SDHCI_USE_64_BIT_DMA;
>
> if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
>
Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
