[Intel-gfx] intel_opregion_get_panel_type potential bug fix

[Jani Nikula]

On Mon, 29 Aug 2016, Sean Greenslade <sean at seangreenslade.com> wrote:
> In investigating the issue myself, I discovered that the root of the
> problem seemed to be that the new code for getting the panel type from
> the opregion seems to believe it is getting good data, but it is not.
> The function intel_opregion_get_panel_type (introduced in commit
> a05628195a0d, the one my bisect says caused this issue) seems to do some
> checks for validity, but apparently not enough.

Fixed by

commit ea54ff4008892b46c7a3e6bc8ab8aaec9d198639
Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
Date:   Tue Sep 13 12:22:19 2016 +0300

    drm/i915: Ignore OpRegion panel type except on select machines

in drm-intel-fixes.

-- 
Jani Nikula, Intel Open Source Technology Center