diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index b905c19..6a59dd7 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -4302,6 +4302,7 @@ go_again:
 			if (intel_dp->active_mst_links &&
 			    !drm_dp_channel_eq_ok(&esi[10], crtc->config->lane_count)) {
 				DRM_DEBUG_KMS("channel EQ not ok, retraining\n");
+				intel_dp->train_set_valid = false;
 				intel_dp_start_link_train(intel_dp);
 				intel_dp_complete_link_train(intel_dp);
 				intel_dp_stop_link_train(intel_dp);