[Bug 106606] [CI] igt at kms_panel_fitting@legacy - fail - Last errno: 34, Numerical result out of range

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106606

Matt Roper <matthew.d.roper at intel.com> changed:

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                 CC|                            |matthew.d.roper at intel.com

--- Comment #12 from Matt Roper <matthew.d.roper at intel.com> ---
The failures in this test at the moment come at the end of the legacy subtest
where we have the following sequence of operations:

 * set plane src rect
 * set plane size different than src rect
 * commit
 * if platform can't scale planes, set plane size to plane src rect size
 * set mode that will use panel fitting
 * commit

The test for platform plane-scaling ability comes too late for gen7/gen8 since
they've already failed the first commit (although it's fine for gen9 since we
can scale a single plane there as long as the panel fitter is off).

I've written a patch to move the check higher which should prevent the current
CI failures:
  https://patchwork.freedesktop.org/series/66080/

That should serve as a short-term solution and unblock CI.  However as I note
in the commit message there, we really shouldn't be baking Intel gen# tests
into a KMS test that is supposed to be vendor agnostic.  In the future we may
want to do something like probe scaling support via the atomic TEST_ONLY
interface before doing the actual display updates with the legacy interfaces.

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