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mmc: sdhci-pci: Quirk for broken command queuing on Intel GLK-based Positivo models

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commit 50c78f398e92fafa1cbba3469c95fe04b2e4206d upstream.

Disable command queuing on Intel GLK-based Positivo models.

Without this quirk, CQE (Command Queuing Engine) causes instability
or I/O errors during operation. Disabling it ensures stable
operation on affected devices.

Signed-off-by: Edson Juliano Drosdeck <edson.drosdeck@gmail.com>
Fixes: bedf9fc01ff1 ("mmc: sdhci: Workaround broken command queuing on Intel GLK")
Cc: stable@vger.kernel.org
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20250626112442.9791-1-edson.drosdeck@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Edson Juliano Drosdeck 2025-06-26 08:24:42 -03:00 • committed by Greg Kroah-Hartman
commit 43b52cb40d
1 changed files with 2 additions and 1 deletions
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3
drivers/mmc/host/sdhci-pci-core.c
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@ -972,7 +972,8 @@ static bool glk_broken_cqhci(struct sdhci_pci_slot *slot)
{
return slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC &&
(dmi_match(DMI_BIOS_VENDOR, "LENOVO") ||
dmi_match(DMI_SYS_VENDOR, "IRBIS"));
dmi_match(DMI_SYS_VENDOR, "IRBIS") ||
dmi_match(DMI_SYS_VENDOR, "Positivo Tecnologia SA"));
}
static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot)