Commit f21082fb authored by Marc Zyngier's avatar Marc Zyngier Committed by Thomas Gleixner
Browse files

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: default avatarRui Salvaterra <rsalvaterra@gmail.com>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Tested-by: default avatarRui Salvaterra <rsalvaterra@gmail.com>
Reviewed-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Bjorn Helgaas <helgaas@kernel.org>
Link: https://lore.kernel.org/r/CALjTZvbzYfBuLB+H=fj2J+9=DxjQ2Uqcy0if_PvmJ-nU-qEgkg@mail.gmail.com
Link: https://lore.kernel.org/r/20211104180130.3825416-3-maz@kernel.org
parent 2226667a

drivers/pci/quirks.c

+6 −0
Original line number Diff line number Diff line
@@ -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);