PCI: Add MSI masking quirk for Nvidia ION AHCI

The ION AHCI device pretends that MSI masking isn't a thing, while it actually implements it and needs MSIs to be unmasked to work. Add a quirk to that effect. Reported-by: Rui Salvaterra <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Tested-by: Rui Salvaterra <[email protected]> Reviewed-by: Thomas Gleixner <[email protected]> Cc: Bjorn Helgaas <[email protected]> Link: https://lore.kernel.org/r/CALjTZvbzYfBuLB+H=fj2J+9=DxjQ2Uqcy0if_PvmJ-nU-qEgkg@mail.gmail.com Link: https://lore.kernel.org/r/[email protected]
pop-os · Nov 11, 2021 · f21082f · f21082f
1 parent 2226667
commit f21082f
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
@@ -5851,3 +5851,9 @@ DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2303,
 			 pci_fixup_pericom_acs_store_forward);
 DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2303,
 			 pci_fixup_pericom_acs_store_forward);
+
+static void nvidia_ion_ahci_fixup(struct pci_dev *pdev)
+{
+	pdev->dev_flags |= PCI_DEV_FLAGS_HAS_MSI_MASKING;
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x0ab8, nvidia_ion_ahci_fixup);