diff mbox series

[v8,3/5] drm/bridge: deprecate old-style bridge allocation

Message ID 20250320-drm-bridge-refcount-v8-3-b3ddaa9f1368@bootlin.com (mailing list archive)
State New
Headers show
Series drm/bridge: add devm_drm_bridge_alloc() with bridge refcount | expand

Commit Message

Luca Ceresoli March 20, 2025, 3:42 p.m. UTC 
All DRM bridges are now supposed to be allocated using
devm_drm_bridge_alloc(), which is cleaner and necessary to support
refcounting.

Deprecate old school allocation using kzalloc and derivatives. In the
absence of a drm_bridge_init() or such initialization function, document
the deprecation on the first DRM bridge core function that is called after
allocation, i.e. drm_bridge_add().

Suggested-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>

---

This patch was added in v8.
---
 drivers/gpu/drm/drm_bridge.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index 2f2ecb73308e601b1a53ec8e7110933cef59b5da..17659b1cbdeae04e10b76f2aabc8ebba65c4f6e1 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -295,6 +295,10 @@  EXPORT_SYMBOL(__devm_drm_bridge_alloc);
  * drm_bridge_add - add the given bridge to the global bridge list
  *
  * @bridge: bridge control structure
+ *
+ * The bridge to be added must have been allocated by
+ * devm_drm_bridge_alloc(). Old-style allocation by kzalloc(),
+ * devm_kzalloc() and similar is deprecated.
  */
 void drm_bridge_add(struct drm_bridge *bridge)
 {