From: Marc Zyngier <maz@xxxxxxxxxx> commit f21082fb20dbfb3e42b769b59ef21c2a7f2c7c1f upstream. 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 <rsalvaterra@xxxxxxxxx> Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Tested-by: Rui Salvaterra <rsalvaterra@xxxxxxxxx> Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Bjorn Helgaas <helgaas@xxxxxxxxxx> Link: https://lore.kernel.org/r/CALjTZvbzYfBuLB+H=fj2J+9=DxjQ2Uqcy0if_PvmJ-nU-qEgkg@xxxxxxxxxxxxxx Link: https://lore.kernel.org/r/20211104180130.3825416-3-maz@xxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/pci/quirks.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -5796,3 +5796,9 @@ static void apex_pci_fixup_class(struct } DECLARE_PCI_FIXUP_CLASS_HEADER(0x1ac1, 0x089a, PCI_CLASS_NOT_DEFINED, 8, apex_pci_fixup_class); + +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);
