diff options
author | Luca Ceresoli <luca.ceresoli@bootlin.com> | 2025-08-01 19:05:27 +0200 |
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committer | Luca Ceresoli <luca.ceresoli@bootlin.com> | 2025-09-02 11:38:29 +0200 |
commit | e4cedfd4f0fc839bb3c783d7e827e9755e1af5cf (patch) | |
tree | e59a4c2e978bfc6b0ce6d7a6095cb63f2d2ec2fb | |
parent | c3183f71c3f1f004a0ca0b84c45c40d8b84dce3d (diff) |
drm/bridge: add drm_bridge_is_last()
Some code needing to know whether a bridge is the last in a chain currently
call drm_bridge_get_next_bridge(). However drm_bridge_get_next_bridge()
will soon increment the refcount of the returned bridge, which would make
such code more annoying to write.
In preparation for drm_bridge_get_next_bridge() to increment the refcount,
as well as to simplify such code, introduce a simple bool function to tell
whether a bridge is the last in the chain.
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20250801-drm-bridge-alloc-getput-drm_bridge_get_next_bridge-v2-5-888912b0be13@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
-rw-r--r-- | include/drm/drm_bridge.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 788517ab00d3..76e05930f50e 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -1321,6 +1321,11 @@ static inline struct drm_bridge *of_drm_find_bridge(struct device_node *np) } #endif +static inline bool drm_bridge_is_last(struct drm_bridge *bridge) +{ + return list_is_last(&bridge->chain_node, &bridge->encoder->bridge_chain); +} + /** * drm_bridge_get_current_state() - Get the current bridge state * @bridge: bridge object |