[v1,1/2] drm/mediatek: Fixup external display black screen issue

[Hsin-Yi Wang]

On Thu, Dec 5, 2019 at 3:13 PM Yongqiang Niu <yongqiang.niu at mediatek.com> wrote:
>
> please double confirm is this dump stack log is ruining on MT8173 real
> IC or not.
> if yes, that may caused ovl hang when disable layer not in blanking,
> then cause vblank time out.
> i will disable overlay with cmdq in next version.
>
It is running on MT8173 acer chromebook. Error only happens when
turning off display.
>