diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index be9b9e0386a8..c111ebcff36b 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -117,6 +117,7 @@ static void ironlake_pfit_disable(struct intel_crtc *crtc, bool force);
 static void ironlake_pfit_enable(struct intel_crtc *crtc);
 static void intel_modeset_setup_hw_state(struct drm_device *dev);
 static void intel_pre_disable_primary_noatomic(struct drm_crtc *crtc);
+static int ilk_max_pixel_rate(struct drm_atomic_state *state);
 
 struct intel_limit {
 	struct {
@@ -5963,8 +5964,7 @@ static int valleyview_modeset_calc_cdclk(struct drm_atomic_state *state)
 
 static int broxton_modeset_calc_cdclk(struct drm_atomic_state *state)
 {
-	struct drm_device *dev = state->dev;
-	int max_pixclk = intel_mode_max_pixclk(dev, state);
+	int max_pixclk = ilk_max_pixel_rate(state);
 	struct intel_atomic_state *intel_state =
 		to_intel_atomic_state(state);