[git pull] drm for 5.8-rc1

[Karol Herbst]

On Fri, Aug 14, 2020 at 4:05 PM Thierry Reding <thierry.reding at gmail.com> wrote:
>
> On Thu, Aug 13, 2020 at 10:45:34AM -0700, James Jones wrote:
> > I'll defer to Thierry, but I think that may be by design.  Tegra format
> > modifiers were added to get things like this working in the first place,
> > right?  It's not a regression, is it?
>
> I recall that things used to work with or without modifiers at some
> point. That was basically the point of the "pitch-linear by default"
> patch, see:
>
>     https://gitlab.freedesktop.org/mesa/mesa/-/commit/9603d81df05105857b676f20dff964ef3ab0ecff
>
> If we don't force pitch-linear for cases where we don't have modifiers,
> there's no way we can properly display these as framebuffers because we
> lack the modifier information at the kernel level.
>

I suspect that's related to
https://gitlab.freedesktop.org/mesa/mesa/commit/c56fe4118a2dd991ff1b2a532c0f234eddd435e9

> Thierry