The drm_bridge_chain_pre_enable() is not the proper opposite of drm_bridge_chain_post_disable(). It continues along the chain to _before_ the starting bridge. Let's fix that.
Fixes: 05193dc38197 ("drm/bridge: Make the bridge chain a double-linked list") Signed-off-by: Douglas Anderson <diand...@chromium.org> Reviewed-by: Andrzej Hajda <a.ha...@samsung.com> Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com> --- (no changes since v1) drivers/gpu/drm/drm_bridge.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index 64f0effb52ac..044acd07c153 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -522,6 +522,9 @@ void drm_bridge_chain_pre_enable(struct drm_bridge *bridge) list_for_each_entry_reverse(iter, &encoder->bridge_chain, chain_node) { if (iter->funcs->pre_enable) iter->funcs->pre_enable(iter); + + if (iter == bridge) + break; } } EXPORT_SYMBOL(drm_bridge_chain_pre_enable); -- 2.31.1.368.gbe11c130af-goog