3 files changed, 15 insertions, 5 deletions
diff --git a/drivers/thunderbolt/domain.c b/drivers/thunderbolt/domain.c
index ec7b5f65804e..9fb1a64f3300 100644
--- a/drivers/thunderbolt/domain.c
+++ b/drivers/thunderbolt/domain.c
@@ -307,7 +307,7 @@ static const struct attribute_group *domain_attr_groups[] = {
 	NULL,
 };
 
-struct bus_type tb_bus_type = {
+const struct bus_type tb_bus_type = {
 	.name = "thunderbolt",
 	.match = tb_service_match,
 	.probe = tb_service_probe,
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index e5a622b9acc3..900114ba4371 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -1127,7 +1127,7 @@ int tb_port_lane_bonding_enable(struct tb_port *port)
 	 * Only set bonding if the link was not already bonded. This
 	 * avoids the lane adapter to re-enter bonding state.
 	 */
-	if (width == TB_LINK_WIDTH_SINGLE) {
+	if (width == TB_LINK_WIDTH_SINGLE && !tb_is_upstream_port(port)) {
 		ret = tb_port_set_lane_bonding(port, true);
 		if (ret)
 			goto err_lane1;
@@ -2877,6 +2877,7 @@ static int tb_switch_lane_bonding_disable(struct tb_switch *sw)
 	return tb_port_wait_for_link_width(down, TB_LINK_WIDTH_SINGLE, 100);
 }
 
+/* Note updating sw->link_width done in tb_switch_update_link_attributes() */
 static int tb_switch_asym_enable(struct tb_switch *sw, enum tb_link_width width)
 {
 	struct tb_port *up, *down, *port;
@@ -2916,10 +2917,10 @@ static int tb_switch_asym_enable(struct tb_switch *sw, enum tb_link_width width)
 			return ret;
 	}
 
-	sw->link_width = width;
 	return 0;
 }
 
+/* Note updating sw->link_width done in tb_switch_update_link_attributes() */
 static int tb_switch_asym_disable(struct tb_switch *sw)
 {
 	struct tb_port *up, *down;
@@ -2954,7 +2955,6 @@ static int tb_switch_asym_disable(struct tb_switch *sw)
 			return ret;
 	}
 
-	sw->link_width = TB_LINK_WIDTH_DUAL;
 	return 0;
 }
 
diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c
index 825cc2f4d8ef..846d2813bb1a 100644
--- a/drivers/thunderbolt/tb.c
+++ b/drivers/thunderbolt/tb.c
@@ -213,7 +213,17 @@ static void tb_add_dp_resources(struct tb_switch *sw)
 		if (!tb_switch_query_dp_resource(sw, port))
 			continue;
 
-		list_add(&port->list, &tcm->dp_resources);
+		/*
+		 * If DP IN on device router exist, position it at the
+		 * beginning of the DP resources list, so that it is used
+		 * before DP IN of the host router. This way external GPU(s)
+		 * will be prioritized when pairing DP IN to a DP OUT.
+		 */
+		if (tb_route(sw))
+			list_add(&port->list, &tcm->dp_resources);
+		else
+			list_add_tail(&port->list, &tcm->dp_resources);
+
 		tb_port_dbg(port, "DP IN resource available\n");
 	}
 }