From: David Cohen <[email protected]> 3.12-stable review patch. If anyone has any objections, please let me know.
=============== commit 13868bf20f2f2c305f96e23620b024e167d6f9cb upstream. This patch defines a quirk for platforms unable to enable HS200 support. Signed-off-by: David Cohen <[email protected]> Reviewed-by: Chuanxiao Dong <[email protected]> Acked-by: Dong Aisheng <[email protected]> Cc: stable <[email protected]> # [3.13] Signed-off-by: Chris Ball <[email protected]> Signed-off-by: Jiri Slaby <[email protected]> --- drivers/mmc/host/sdhci.c | 3 ++- include/linux/mmc/sdhci.h | 2 ++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index ff6e822d2b78..cf110751d1c6 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -3006,7 +3006,8 @@ int sdhci_add_host(struct sdhci_host *host) /* SD3.0: SDR104 is supported so (for eMMC) the caps2 * field can be promoted to support HS200. */ - mmc->caps2 |= MMC_CAP2_HS200; + if (!(host->quirks2 & SDHCI_QUIRK2_BROKEN_HS200)) + mmc->caps2 |= MMC_CAP2_HS200; } else if (caps[1] & SDHCI_SUPPORT_SDR50) mmc->caps |= MMC_CAP_UHS_SDR50; diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index 3e781b8c0be7..362927c48f97 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -98,6 +98,8 @@ struct sdhci_host { #define SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON (1<<4) /* Controller has a non-standard host control register */ #define SDHCI_QUIRK2_BROKEN_HOST_CONTROL (1<<5) +/* Controller does not support HS200 */ +#define SDHCI_QUIRK2_BROKEN_HS200 (1<<6) int irq; /* Device IRQ */ void __iomem *ioaddr; /* Mapped address */ -- 2.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
