mmc: sdhci: Preset value not supported in Baytrail eMMC

commit d61b5946 upstream.

"SDHCI_QUIRK2_PRESET_VALUE_BROKEN" quirk is added to prohibit
preset value enabling for Baytrail eMMC controller.
Signed-off-by: Maurice Petallo <mauricex.r.petallo@intel.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

drivers/mmc/host/sdhci-acpi.c

@@ -127,6 +127,7 @@ static const struct sdhci_acpi_slot sdhci_acpi_slot_int_emmc = {
 	.caps    = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE | MMC_CAP_HW_RESET,
 	.caps2   = MMC_CAP2_HC_ERASE_SZ,
 	.flags   = SDHCI_ACPI_RUNTIME_PM,
+	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
 };
 
 static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sdio = {

drivers/mmc/host/sdhci-pci.c

@@ -285,6 +285,7 @@ static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
 static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
 	.allow_runtime_pm = true,
 	.probe_slot	= byt_emmc_probe_slot,
+	.quirks2	= SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
 };
 
 static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {