diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index a3c7dd8fd4063fe89c5d56667cac35d51dd0a104..df0773afb7f5e5f5d4e7e6b15acaf2e73bee6fd4 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -5049,6 +5049,7 @@ static void intel_dp_pps_init(struct drm_device *dev,
 /**
  * intel_dp_set_drrs_state - program registers for RR switch to take effect
  * @dev: DRM device
+ * @crtc_state: a pointer to the active intel_crtc_state
  * @refresh_rate: RR to be programmed
  *
  * This function gets called when refresh rate (RR) has to be changed from