diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index 485717c8f0b4..466b8fc9836a 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -1871,7 +1871,7 @@ static int tc_mipi_dsi_host_attach(struct tc_data *tc)
 	of_node_put(host_node);
 	of_node_put(endpoint);
 
-	if (dsi_lanes < 0 || dsi_lanes > 4)
+	if (dsi_lanes <= 0 || dsi_lanes > 4)
 		return -EINVAL;
 
 	if (!host)