diff options
| -rw-r--r-- | drivers/gpu/drm/drm_bridge.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index 86e9c49232f7..986e4c79a4e0 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -867,6 +867,7 @@ void drm_atomic_bridge_chain_post_disable(struct drm_bridge *bridge, encoder = bridge->encoder; + mutex_lock(&encoder->bridge_chain_mutex); list_for_each_entry_from(bridge, &encoder->bridge_chain, chain_node) { limit = NULL; @@ -915,6 +916,7 @@ void drm_atomic_bridge_chain_post_disable(struct drm_bridge *bridge, /* Jump all bridges that we have already post_disabled */ bridge = limit; } + mutex_unlock(&encoder->bridge_chain_mutex); } EXPORT_SYMBOL(drm_atomic_bridge_chain_post_disable); @@ -961,6 +963,7 @@ void drm_atomic_bridge_chain_pre_enable(struct drm_bridge *bridge, encoder = bridge->encoder; + mutex_lock(&encoder->bridge_chain_mutex); list_for_each_entry_reverse(iter, &encoder->bridge_chain, chain_node) { if (iter->pre_enable_prev_first) { next = iter; @@ -1003,6 +1006,7 @@ void drm_atomic_bridge_chain_pre_enable(struct drm_bridge *bridge, if (iter == bridge) break; } + mutex_unlock(&encoder->bridge_chain_mutex); } EXPORT_SYMBOL(drm_atomic_bridge_chain_pre_enable); |