Just adds some missing calls to
drm_dp_aux_register()/drm_dp_aux_unregister() for when we attach/detach the
bridge.

Signed-off-by: Lyude Paul <ly...@redhat.com>
---
 drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c 
b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
index 01e95466502a..49e4c340f1de 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
@@ -1719,10 +1719,14 @@ static int cdns_mhdp_attach(struct drm_bridge *bridge,
 
        dev_dbg(mhdp->dev, "%s\n", __func__);
 
+       ret = drm_dp_aux_register(&mhdp->aux);
+       if (ret < 0)
+               return ret;
+
        if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
                ret = cdns_mhdp_connector_init(mhdp);
                if (ret)
-                       return ret;
+                       goto aux_unregister;
        }
 
        spin_lock(&mhdp->start_lock);
@@ -1738,6 +1742,9 @@ static int cdns_mhdp_attach(struct drm_bridge *bridge,
                       mhdp->regs + CDNS_APB_INT_MASK);
 
        return 0;
+aux_unregister:
+       drm_dp_aux_unregister(&mhdp->aux);
+       return ret;
 }
 
 static void cdns_mhdp_configure_video(struct cdns_mhdp_device *mhdp,
@@ -2082,6 +2089,8 @@ static void cdns_mhdp_detach(struct drm_bridge *bridge)
 
        dev_dbg(mhdp->dev, "%s\n", __func__);
 
+       drm_dp_aux_unregister(&mhdp->aux);
+
        spin_lock(&mhdp->start_lock);
 
        mhdp->bridge_attached = false;
-- 
2.30.2

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