linux-kernel - Re: [PATCH v7 29/36] drm/vc4: tests: Remove vc4_dummy

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Date: Tue, 27 Feb 2024 19:45:01 -0300
From: Maíra Canal <mcanal@...lia.com>
To: Maxime Ripard <mripard@...nel.org>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
 Daniel Vetter <daniel@...ll.ch>, Jonathan Corbet <corbet@....net>,
 Sandy Huang <hjc@...k-chips.com>, Heiko Stübner
 <heiko@...ech.de>, Chen-Yu Tsai <wens@...e.org>,
 Jernej Skrabec <jernej.skrabec@...il.com>,
 Samuel Holland <samuel@...lland.org>, Hans Verkuil <hverkuil@...all.nl>,
 Sebastian Wick <sebastian.wick@...hat.com>,
 Ville Syrjälä <ville.syrjala@...ux.intel.com>,
 dri-devel@...ts.freedesktop.org, linux-arm-kernel@...ts.infradead.org,
 linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
 linux-sunxi@...ts.linux.dev
Subject: Re: [PATCH v7 29/36] drm/vc4: tests: Remove vc4_dummy_plane structure

Hi Maxime,

On 2/27/24 10:02, Maxime Ripard wrote:
> Hi Maíra,
> 
> Thanks for you reviews!
> 
> On Mon, Feb 26, 2024 at 09:29:32AM -0300, Maíra Canal wrote:
>> On 2/22/24 15:14, Maxime Ripard wrote:
>>> The vc4_dummy_plane structure is an exact equivalent to vc4_plane, so we
>>
>> Maybe I understood incorrectly, but isn't the vc4_dummy_plane structure
>> equivalent to drm_plane?
> 
> Both statements are true :)
> 
> vc4 itself uses vc4_plane to holds its plane-related content, but it
> turns out that there's nothing in that structure anymore and vc4_plane
> == drm_plane.
> 
> In our mock driver, we have another structure meant to store the
> mock-plane-related content which doesn't have anything in it anymore,
> and is thus equivalent to vc4_plane.
> 
> So, basically, vc4_dummy_plane == vc4_plane == drm_plane.
> 
> This patch is only about getting rid of vc4_dummy_plane though.
> 
> Is it clearer?
> 

Yeah, with that pointed out, you can add my:

Reviewed-by: Maíra Canal <mcanal@...lia.com>

Best Regards,
- Maíra

> Maxime