drm/dp_mst: Fix all mstb marked as not probed after suspend/resume

From Wayne Lin
e290feb8b749a06b93ed01d4cf66567cbdf0e85d in linux-6.6.y/6.6.44
d63d81094d208abb20fc444514b2d9ec2f4b7c4e in mainline linux

diff --git a/sys/dev/pci/drm/display/drm_dp_mst_topology.c b/sys/dev/pci/drm/display/drm_dp_mst_topology.c
index 778b596..2b77d44 100644 (file)
--- a/sys/dev/pci/drm/display/drm_dp_mst_topology.c
+++ b/sys/dev/pci/drm/display/drm_dp_mst_topology.c
@@ -2933,7 +2933,7 @@ static int drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
 
        /* FIXME: Actually do some real error handling here */
        ret = drm_dp_mst_wait_tx_reply(mstb, txmsg);
-       if (ret <= 0) {
+       if (ret < 0) {
                drm_err(mgr->dev, "Sending link address failed with %d\n", ret);
                goto out;
        }
@@ -2985,7 +2985,7 @@ static int drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
        mutex_unlock(&mgr->lock);
 
 out:
-       if (ret <= 0)
+       if (ret < 0)
                mstb->link_address_sent = false;
        kfree(txmsg);
        return ret < 0 ? ret : changed;