From: Hans de Goede hdegoede@redhat.com
commit 3397b251ea02003f47f0b1667f3fe30bb4f9ce90 upstream.
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 DMI_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 table entry which selects this quirk for the Acer SW5-012.
Signed-off-by: Hans de Goede hdegoede@redhat.com Acked-by: Adrian Hunter adrian.hunter@intel.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200316184753.393458-2-hdegoede@redhat.com Signed-off-by: Ulf Hansson ulf.hansson@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/mmc/host/sdhci-acpi.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
--- a/drivers/mmc/host/sdhci-acpi.c +++ b/drivers/mmc/host/sdhci-acpi.c @@ -80,6 +80,7 @@ struct sdhci_acpi_host {
enum { DMI_QUIRK_RESET_SD_SIGNAL_VOLT_ON_SUSP = BIT(0), + DMI_QUIRK_SD_NO_WRITE_PROTECT = BIT(1), };
static inline void *sdhci_acpi_priv(struct sdhci_acpi_host *c) @@ -671,6 +672,18 @@ static const struct dmi_system_id sdhci_ }, .driver_data = (void *)DMI_QUIRK_RESET_SD_SIGNAL_VOLT_ON_SUSP, }, + { + /* + * 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 *)DMI_QUIRK_SD_NO_WRITE_PROTECT, + }, {} /* Terminating entry */ };
@@ -795,6 +808,9 @@ static int sdhci_acpi_probe(struct platf
if (quirks & DMI_QUIRK_RESET_SD_SIGNAL_VOLT_ON_SUSP) c->reset_signal_volt_on_suspend = true; + + if (quirks & DMI_QUIRK_SD_NO_WRITE_PROTECT) + host->mmc->caps2 |= MMC_CAP2_NO_WRITE_PROTECT; }
err = sdhci_setup_host(host);