Re: [PATCH 12/12] drm/modifiers: Enforce consistency between the cap an IN_FORMATS

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On Tue, Apr 13, 2021 at 11:49:03AM +0200, Daniel Vetter wrote:
> It's very confusing for userspace to have to deal with inconsistencies
> here, and some drivers screwed this up a bit. Most just ommitted the
> format list when they meant to say that only linear modifier is
> allowed, but some also meant that only implied modifiers are
> acceptable (because actually none of the planes registered supported
> modifiers).
> 
> Now that this is all done consistently across all drivers, document
> the rules and enforce it in the drm core.
> 
> Cc: Pekka Paalanen <pekka.paalanen@xxxxxxxxxxxxx>
> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
> Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> Cc: Maxime Ripard <mripard@xxxxxxxxxx>
> Cc: Thomas Zimmermann <tzimmermann@xxxxxxx>
> Cc: David Airlie <airlied@xxxxxxxx>
> Cc: Daniel Vetter <daniel@xxxxxxxx>

Acked-by: Maxime Ripard <maxime@xxxxxxxxxx>

Maxime

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