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    Subject[PATCH 4.19 08/80] mmc: sdhci-acpi: Add SDHCI_QUIRK2_BROKEN_64_BIT_DMA for AMDI0040
    Date
    From: Raul E Rangel <rrangel@chromium.org>

    [ Upstream commit 45a3fe3bf93b7cfeddc28ef7386555e05dc57f06 ]

    The AMD eMMC 5.0 controller does not support 64 bit DMA.

    Fixes: 34597a3f60b1 ("mmc: sdhci-acpi: Add support for ACPI HID of AMD Controller with HS400")
    Signed-off-by: Raul E Rangel <rrangel@chromium.org>
    Link: https://marc.info/?l=linux-mmc&m=158879884514552&w=2
    Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
    Acked-by: Adrian Hunter <adrian.hunter@intel.com>
    Link: https://lore.kernel.org/r/20200508165344.1.Id5bb8b1ae7ea576f26f9d91c761df7ccffbf58c5@changeid
    Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/mmc/host/sdhci-acpi.c | 10 ++++++----
    1 file changed, 6 insertions(+), 4 deletions(-)

    diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
    index 57c1ec322e421..145143b6a0e6d 100644
    --- a/drivers/mmc/host/sdhci-acpi.c
    +++ b/drivers/mmc/host/sdhci-acpi.c
    @@ -552,10 +552,12 @@ static int sdhci_acpi_emmc_amd_probe_slot(struct platform_device *pdev,
    }

    static const struct sdhci_acpi_slot sdhci_acpi_slot_amd_emmc = {
    - .chip = &sdhci_acpi_chip_amd,
    - .caps = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE,
    - .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_32BIT_DMA_SIZE |
    - SDHCI_QUIRK_32BIT_ADMA_SIZE,
    + .chip = &sdhci_acpi_chip_amd,
    + .caps = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE,
    + .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
    + SDHCI_QUIRK_32BIT_DMA_SIZE |
    + SDHCI_QUIRK_32BIT_ADMA_SIZE,
    + .quirks2 = SDHCI_QUIRK2_BROKEN_64_BIT_DMA,
    .probe_slot = sdhci_acpi_emmc_amd_probe_slot,
    };

    --
    2.20.1


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