Merge drm/drm-next into drm-misc-next

Backmerging to get v6.15-rc1 into drm-misc-next. Also fixes a
build issue when enabling CONFIG_DRM_SCHED_KUNIT_TEST.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

1 files changed, 24 insertions, 16 deletions

diff --git a/drivers/gpu/drm/display/drm_dp_mst_topology.c b/drivers/gpu/drm/display/drm_dp_mst_topology.c
index 49c330567a92..a89f38fd3218 100644
--- a/drivers/gpu/drm/display/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/display/drm_dp_mst_topology.c
@@ -4031,6 +4031,22 @@ out:
 	return 0;
 }
 
+static bool primary_mstb_probing_is_done(struct drm_dp_mst_topology_mgr *mgr)
+{
+	bool probing_done = false;
+
+	mutex_lock(&mgr->lock);
+
+	if (mgr->mst_primary && drm_dp_mst_topology_try_get_mstb(mgr->mst_primary)) {
+		probing_done = mgr->mst_primary->link_address_sent;
+		drm_dp_mst_topology_put_mstb(mgr->mst_primary);
+	}
+
+	mutex_unlock(&mgr->lock);
+
+	return probing_done;
+}
+
 static inline bool
 drm_dp_mst_process_up_req(struct drm_dp_mst_topology_mgr *mgr,
 			  struct drm_dp_pending_up_req *up_req)
@@ -4061,8 +4077,12 @@ drm_dp_mst_process_up_req(struct drm_dp_mst_topology_mgr *mgr,
 
 	/* TODO: Add missing handler for DP_RESOURCE_STATUS_NOTIFY events */
 	if (msg->req_type == DP_CONNECTION_STATUS_NOTIFY) {
-		dowork = drm_dp_mst_handle_conn_stat(mstb, &msg->u.conn_stat);
-		hotplug = true;
+		if (!primary_mstb_probing_is_done(mgr)) {
+			drm_dbg_kms(mgr->dev, "Got CSN before finish topology probing. Skip it.\n");
+		} else {
+			dowork = drm_dp_mst_handle_conn_stat(mstb, &msg->u.conn_stat);
+			hotplug = true;
+		}
 	}
 
 	drm_dp_mst_topology_put_mstb(mstb);
@@ -4144,10 +4164,11 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr)
 	drm_dp_send_up_ack_reply(mgr, mst_primary, up_req->msg.req_type,
 				 false);
 
+	drm_dp_mst_topology_put_mstb(mst_primary);
+
 	if (up_req->msg.req_type == DP_CONNECTION_STATUS_NOTIFY) {
 		const struct drm_dp_connection_status_notify *conn_stat =
 			&up_req->msg.u.conn_stat;
-		bool handle_csn;
 
 		drm_dbg_kms(mgr->dev, "Got CSN: pn: %d ldps:%d ddps: %d mcs: %d ip: %d pdt: %d\n",
 			    conn_stat->port_number,
@@ -4156,16 +4177,6 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr)
 			    conn_stat->message_capability_status,
 			    conn_stat->input_port,
 			    conn_stat->peer_device_type);
-
-		mutex_lock(&mgr->probe_lock);
-		handle_csn = mst_primary->link_address_sent;
-		mutex_unlock(&mgr->probe_lock);
-
-		if (!handle_csn) {
-			drm_dbg_kms(mgr->dev, "Got CSN before finish topology probing. Skip it.");
-			kfree(up_req);
-			goto out_put_primary;
-		}
 	} else if (up_req->msg.req_type == DP_RESOURCE_STATUS_NOTIFY) {
 		const struct drm_dp_resource_status_notify *res_stat =
 			&up_req->msg.u.resource_stat;
@@ -4180,9 +4191,6 @@ static int drm_dp_mst_handle_up_req(struct drm_dp_mst_topology_mgr *mgr)
 	list_add_tail(&up_req->next, &mgr->up_req_list);
 	mutex_unlock(&mgr->up_req_lock);
 	queue_work(system_long_wq, &mgr->up_req_work);
-
-out_put_primary:
-	drm_dp_mst_topology_put_mstb(mst_primary);
 out_clear_reply:
 	reset_msg_rx_state(&mgr->up_req_recv);
 	return ret;