On the Acer Aspire Switch 10 (SW5-012) microSD slot always reports the card
being write-protected even though microSD cards do not have a write-protect
switch at all.
Add a new SDHCI_ACPI_QUIRK_SD_NO_WRITE_PROTECT quirk which when set sets
the MMC_CAP2_NO_WRITE_PROTECT flag on the controller for the external SD
slot, and add a DMI quirk which enables this new quirk by default on the
Acer SW5-012.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/mmc/host/sdhci-acpi.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index 9f150c73e958..69485d29b6bc 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -78,6 +78,7 @@ struct sdhci_acpi_host {
enum {
SDHCI_ACPI_QUIRK_SD_NO_1_8V = BIT(0),
+ SDHCI_ACPI_QUIRK_SD_NO_WRITE_PROTECT = BIT(1),
};
static int quirks = -1;
@@ -671,6 +672,18 @@ static const struct dmi_system_id sdhci_acpi_quirks[] = {
},
.driver_data = (void *)SDHCI_ACPI_QUIRK_SD_NO_1_8V,
},
+ {
+ /*
+ * The Acer Aspire Switch 10 (SW5-012) microSD slot always
+ * reports the card being write-protected even though microSD
+ * cards do not have a write-protect switch at all.
+ */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Aspire SW5-012"),
+ },
+ .driver_data = (void *)SDHCI_ACPI_QUIRK_SD_NO_WRITE_PROTECT,
+ },
{} /* Terminating entry */
};
@@ -798,6 +811,9 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
if (quirks & SDHCI_ACPI_QUIRK_SD_NO_1_8V)
host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V;
+
+ if (quirks & SDHCI_ACPI_QUIRK_SD_NO_WRITE_PROTECT)
+ host->mmc->caps2 |= MMC_CAP2_NO_WRITE_PROTECT;
}
err = sdhci_setup_host(host);
--
2.24.1
