[PATCH v3 03/22] drm/todo: add entry about converting to of_drm_find_and_get_bridge()
From: Luca Ceresoli <luca.ceresoli@bootlin.com>
Date: 2025-12-16 17:59:37
Also in:
dri-devel, imx, linux-amlogic, linux-arm-kernel, lkml
Subsystem:
documentation, drm drivers, drm drivers and misc gpu patches, the rest · Maintainers:
Jonathan Corbet, David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Linus Torvalds
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@kernel.org> Link: https://lore.kernel.org/dri-devel/20250319-stylish-lime-mongoose-0a18ad@houat/ (local) Reviewed-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> --- Changes in v3: - update after of_drm_get_bridge() -> of_drm_find_and_get_bridge() rename --- Documentation/gpu/todo.rst | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
index 22487ac1b011..520da44a04a6 100644
--- a/Documentation/gpu/todo.rst
+++ b/Documentation/gpu/todo.rst@@ -506,6 +506,22 @@ Contact: Maxime Ripard <mripard@kernel.org>, Level: Intermediate +Convert users of of_drm_find_bridge() to of_drm_find_and_get_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 of_drm_find_and_get_bridge() which does, but some +users still need to be converted. + +Contact: Maxime Ripard <mripard@kernel.org>, + Luca Ceresoli <luca.ceresoli@bootlin.com> + +Level: Intermediate + Core refactorings =================
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2.52.0