On Thu, Nov 04 2021 at 18:01, Marc Zyngier wrote: > Rui reported[1] that his Nvidia ION system stopped working with 5.15, > with the AHCI device failing to get any MSI. A rapid investigation > revealed that although the device doesn't advertise MSI masking, it > actually needs it. Quality hardware indeed. > > Anyway, the couple of patches below are an attempt at dealing with the > issue in a more or less generic way. > > [1] https://lore.kernel.org/r/CALjTZvbzYfBuLB+H=fj2J+9=DxjQ2Uqcy0if_PvmJ-nU-qEgkg@xxxxxxxxxxxxxx > > Marc Zyngier (2): > PCI: MSI: Deal with devices lying about their MSI mask capability > PCI: Add MSI masking quirk for Nvidia ION AHCI > > drivers/pci/msi.c | 3 +++ > drivers/pci/quirks.c | 6 ++++++ > include/linux/pci.h | 2 ++ > 3 files changed, 11 insertions(+) Groan. Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
