Re: [PATCH v6 1/9] drm/omap: add sanity plane state check

[Tomi Valkeinen]

On 18/10/2021 17:28, Neil Armstrong wrote:
> Call drm_atomic_helper_check_plane_state() from the plane
> atomic_check() callback in order to add plane state sanity
> checking.
>
> It will permit filtering out totally bad scaling factors, even
> if the real check are done later in the atomic commit.

I think there's more to it: the function sets plane_state->visible, 
which is used in later patches.

 Tomi