diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 944b1449b7f9e..16b7bf7af5378 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -322,6 +322,24 @@ static int intel_dp_common_len_rate_limit(struct intel_dp *intel_dp,
 	return 0;
 }
 
+static bool intel_dp_link_params_valid(struct intel_dp *intel_dp)
+{
+	/*
+	 * FIXME: we need to synchronize the current link parameters with
+	 * hardware readout. Currently fast link training doesn't work on
+	 * boot-up.
+	 */
+	if (intel_dp->link_rate == 0 ||
+	    intel_dp->link_rate > intel_dp->max_link_rate)
+		return false;
+
+	if (intel_dp->lane_count == 0 ||
+	    intel_dp->lane_count > intel_dp_max_lane_count(intel_dp))
+		return false;
+
+	return true;
+}
+
 int intel_dp_get_link_train_fallback_values(struct intel_dp *intel_dp,
 					    int link_rate, uint8_t lane_count)
 {
@@ -4253,9 +4271,11 @@ intel_dp_check_link_status(struct intel_dp *intel_dp)
 	if (!to_intel_crtc(intel_encoder->base.crtc)->active)
 		return;
 
-	/* FIXME: we need to synchronize this sort of stuff with hardware
-	 * readout. Currently fast link training doesn't work on boot-up. */
-	if (!intel_dp->lane_count)
+	/*
+	 * Validate the cached values of intel_dp->link_rate and
+	 * intel_dp->lane_count before attempting to retrain.
+	 */
+	if (!intel_dp_link_params_valid(intel_dp))
 		return;
 
 	/* Retrain if Channel EQ or CR not ok */