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drosdeckgregkh
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mmc: sdhci-pci: Quirk for broken command queuing on Intel GLK-based Positivo models
commit 50c78f3 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: bedf9fc ("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>
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drivers/mmc/host/sdhci-pci-core.c

Lines changed: 2 additions & 1 deletion
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@@ -912,7 +912,8 @@ static bool glk_broken_cqhci(struct sdhci_pci_slot *slot)
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{
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return slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC &&
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(dmi_match(DMI_BIOS_VENDOR, "LENOVO") ||
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dmi_match(DMI_SYS_VENDOR, "IRBIS"));
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dmi_match(DMI_SYS_VENDOR, "IRBIS") ||
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dmi_match(DMI_SYS_VENDOR, "Positivo Tecnologia SA"));
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}
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static bool jsl_broken_hs400es(struct sdhci_pci_slot *slot)

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