[Nouveau] [PATCH] drm/nouveau/kms/nv50-: Check plane size for cursors, not fb size

[Ilia Mirkin]

On Thu, Mar 18, 2021 at 5:56 PM Lyude Paul <lyude at redhat.com> wrote:
>
> Found this while trying to make some changes to the kms_cursor_crc test.
> curs507a_acquire checks that the width and height of the cursor framebuffer
> are equal (asyw->image.{w,h}). This is actually wrong though, as we only
> want to be concerned that the actual width/height of the plane are the
> same. It's fine if we scan out from an fb that's slightly larger than the
> cursor plane (in fact, some igt tests actually do this).

How so? The scanout engine expects the data to be packed. Height can
be larger, but width has to match.

  -ilia