drm_bridge_chain_get_first_bridge() returns a bridge pointer that the
caller could hold for a long time. Increment the refcount of the returned
bridge and document it must be put by the caller.
Signed-off-by: Luca Ceresoli <luca.ceres...@bootlin.com>
---
This patch was added in v7.
---
include/drm/drm_bridge.h | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index
a5accd64c364ebb57903ae1e7459034ad9ebf4f3..d9777d5f2e9ef006f0062e4507bce99df4146cd9
100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -1105,6 +1105,9 @@ drm_bridge_get_prev_bridge(struct drm_bridge *bridge)
* drm_bridge_chain_get_first_bridge() - Get the first bridge in the chain
* @encoder: encoder object
*
+ * The refcount of the returned bridge is incremented. Use drm_bridge_put()
+ * when done with it.
+ *
* RETURNS:
* the first bridge in the chain, or NULL if @encoder has no bridge attached
* to it.
@@ -1112,8 +1115,8 @@ drm_bridge_get_prev_bridge(struct drm_bridge *bridge)
static inline struct drm_bridge *
drm_bridge_chain_get_first_bridge(struct drm_encoder *encoder)
{
- return list_first_entry_or_null(&encoder->bridge_chain,
- struct drm_bridge, chain_node);
+ return drm_bridge_get(list_first_entry_or_null(&encoder->bridge_chain,
+ struct drm_bridge,
chain_node));
}
/**
--
2.48.1
