linux-kernel - Re: [PATCH 03/26] drm/todo: add entry about converting to drm_of_find

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Message-ID: <lpu5lms6rk53xfgot2dltkcoa4m7gdckjow5khr7hppvpfieq6@fs5zzomieuzd>
Date: Mon, 24 Nov 2025 11:21:06 +0100
From: Maxime Ripard <mripard@...nel.org>
To: Luca Ceresoli <luca.ceresoli@...tlin.com>
Cc: Andrzej Hajda <andrzej.hajda@...el.com>, 
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Subject: Re: [PATCH 03/26] drm/todo: add entry about converting to
 drm_of_find_bridge()

On Wed, Nov 19, 2025 at 02:05:34PM +0100, Luca Ceresoli wrote:
> of_drm_find_bridge() is deprecated, but converting some users is very
> complex and should be reasonably doable only after the DRM panel bridge
> lifetime rework. Add a TODO to track this.
> 
> Suggested-by: Maxime Ripard <mripard@...nel.org>
> Link: https://lore.kernel.org/dri-devel/20250319-stylish-lime-mongoose-0a18ad@houat/
> Signed-off-by: Luca Ceresoli <luca.ceresoli@...tlin.com>
> ---
>  Documentation/gpu/todo.rst | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
> index 9013ced318cb..1a4a11dee036 100644
> --- a/Documentation/gpu/todo.rst
> +++ b/Documentation/gpu/todo.rst
> @@ -506,6 +506,22 @@ Contact: Maxime Ripard <mripard@...nel.org>,
>  
>  Level: Intermediate
>  
> +Convert users of of_drm_find_bridge() to drm_of_find_bridge()
> +-------------------------------------------------------------
> +
> +Taking a struct drm_bridge pointer requires getting a reference and putting
> +it after disposing of the pointer. Most functions returning a struct
> +drm_bridge pointer already call drm_bridge_get() to increment the refcount
> +and their users have been updated to call drm_bridge_put() when
> +appropriate. of_drm_find_bridge() does not get a reference and it has been
> +deprecated in favor of drm_of_find_bridge() which does, but some users
> +still need to be converted.
> +
> +Contact: Maxime Ripard <mripard@...nel.org>,
> +         Luca Ceresoli <luca.ceresoli@...tlin.com>
> +
> +Level: Intermediate
> +

My understanding is that there's no users left after this series, so do
we really need a todo?

Maxime

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