[PATCH v2] drm: plane: Verify that no or all planes have a zpos property

[Simon Ser]

On Thursday, May 14, 2020 12:58 AM, Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com> wrote:

> The zpos property is used by userspace to sort the order of planes.
> While the property is not mandatory for drivers to implement, mixing
> planes with and without zpos confuses userspace, and shall not be
> allowed. Clarify this in the documentation and warn at runtime if the
> drivers mixes planes with and without zpos properties.

Thanks for the patch, this looks good to me!

Acked-by: Simon Ser <contact at emersion.fr>