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authorLuca Ceresoli <luca.ceresoli@bootlin.com>2025-03-26 20:47:37 +0300
committerLouis Chauvet <louis.chauvet@bootlin.com>2025-04-07 12:38:05 +0300
commitb3f13e00a8de351832df7d628a15ca4db49ca94f (patch)
treeca7747014f7261a2eabe201446663a01bcc867da
parent30d1b37d4c022b5e6c164c090a60a3be1a66876e (diff)
downloadlinux-b3f13e00a8de351832df7d628a15ca4db49ca94f.tar.xz
drm/bridge: make devm_drm_bridge_alloc() mandatory for bridge allocation
All DRM bridges are now supposed to be allocated using devm_drm_bridge_alloc(), which is cleaner and necessary to support refcounting. In the absence of a drm_bridge_init() or such initialization function, document the new mandatory alloc function 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> Reviewed-by: Maxime Ripard <mripard@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20250326-drm-bridge-refcount-v9-3-5e0661fe1f84@bootlin.com Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
-rw-r--r--drivers/gpu/drm/drm_bridge.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index 22b459af112f..b4c89ec01998 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -286,6 +286,9 @@ 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().
*/
void drm_bridge_add(struct drm_bridge *bridge)
{