Hi Rob, On 2019-06-05 14:57, Rob Clark wrote: > On Tue, Jun 4, 2019 at 11:58 PM Tomasz Figa <tfiga@xxxxxxxxxxxx> wrote: >> But first of all, I remember Marek already submitted some patches long >> ago that extended struct driver with some flag that means that the >> driver doesn't want the IOMMU to be attached before probe. Why >> wouldn't that work? Sounds like a perfect opt-out solution. > Actually, yeah.. we should do that. That is the simplest solution. Tomasz has very good memory. It took me a while to find that old patches: https://patchwork.kernel.org/patch/4677251/ https://patchwork.kernel.org/patch/4677941/ https://patchwork.kernel.org/patch/4677401/ It looks that my idea was a bit ahead of its time ;) Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland