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-rw-r--r--drivers/thunderbolt/tb.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c
index 5acdeb766860..fd49f86e0353 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");
}
}