diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 0b2e842..3502ad4 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -554,9 +554,10 @@ intel_dp_aux_native_write(struct intel_dp *intel_dp,
 			return ret;
 		if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_ACK)
 			break;
-		else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER)
+		else if ((ack & AUX_NATIVE_REPLY_MASK) == AUX_NATIVE_REPLY_DEFER) {
+			DRM_DEBUG_KMS("XXX: message to throttle even more\n");
 			udelay(100);
-		else
+		} else
 			return -EIO;
 	}
 	return send_bytes;