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drm/bridge: get/put the bridge reference in drm_bridge_add/remove()

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drm_bridge_add() adds the bridge to the global bridge_list, so take a
reference for that. Vice versa in drm_bridge_remove().

Reviewed-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20250620-drm-bridge-alloc-getput-drm-bridge-c-v9-1-ca53372c9a84@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
This commit is contained in:
Luca Ceresoli 2025-06-20 17:59:53 +02:00
parent 7246e09299
commit a7748dd127
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/drm_bridge.c
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@ -295,6 +295,8 @@ EXPORT_SYMBOL(__devm_drm_bridge_alloc);
*/ */
void drm_bridge_add(struct drm_bridge *bridge) void drm_bridge_add(struct drm_bridge *bridge)
{ {
drm_bridge_get(bridge);
mutex_init(&bridge->hpd_mutex); mutex_init(&bridge->hpd_mutex);
if (bridge->ops & DRM_BRIDGE_OP_HDMI) if (bridge->ops & DRM_BRIDGE_OP_HDMI)
@ -342,6 +344,8 @@ void drm_bridge_remove(struct drm_bridge *bridge)
mutex_unlock(&bridge_lock); mutex_unlock(&bridge_lock);
mutex_destroy(&bridge->hpd_mutex); mutex_destroy(&bridge->hpd_mutex);
drm_bridge_put(bridge);
} }
EXPORT_SYMBOL(drm_bridge_remove); EXPORT_SYMBOL(drm_bridge_remove);