[Bug 65442] [HSW IVB ILK SNB bisected] I-G-T/testdisplay -f cause "*ERROR* mismatch in adjusted_mode.flags"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65442

cancan,feng <cancan.feng at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #14 from cancan,feng <cancan.feng at intel.com> ---
(In reply to comment #13)
> Created attachment 82997 [details] [review]
> sanitize requested sync polarity flags
> 
> This seems to be caused by testdisplay requesting a mode without either
> negative or positive polarity (mode.flags=0). All intel encoders treat this
> to mean negative polarity. The mode state readout/checker code otoh expects
> exactly one of the polarity bits to bet set. The attached patch is one way
> to fix this, could you give it a go?

I tested this patch on drm-intel-nightly branch, this issue has gone. So I
think we could close this bug.

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