On Sun, May 01, 2016 at 08:01:49PM +0200, Christoph Hellwig wrote: > FYI, I spent some time trying to convert more drivers to this, and > I think we'll need an additional flag to skip MSI or MSI-X as there > is plenty of hardware claiming support in the capabilities flag, > but not actually supporting one of them.
Or maybe add a "pdev->msix_broken" bit and quirks to set it? Or if pci_fixup_final quirks merely cleared pdev->msix_cap, I think the PCI core would never try to enable MSI-X.