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Commit b37f6da8 authored by Marc Zyngier's avatar Marc Zyngier Committed by Greg Kroah-Hartman
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PCI: Add MSI masking quirk for Nvidia ION AHCI 



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: 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


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent db1390b6

drivers/pci/quirks.c

+6 −0
Original line number Diff line number Diff line
@@ -5777,3 +5777,9 @@ static void apex_pci_fixup_class(struct pci_dev *pdev) 
}

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);