diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 671d3e06cbab..545049175e5e 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -5061,12 +5061,10 @@ static void ironlake_fdi_pll_disable(struct intel_crtc *intel_crtc)
 	udelay(100);
 }
 
-static void ironlake_fdi_disable(struct drm_crtc *crtc)
+static void ironlake_fdi_disable(struct intel_crtc *crtc)
 {
-	struct drm_device *dev = crtc->dev;
-	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
-	enum pipe pipe = intel_crtc->pipe;
+	struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+	enum pipe pipe = crtc->pipe;
 	i915_reg_t reg;
 	u32 temp;
 
@@ -6772,7 +6770,7 @@ static void ironlake_crtc_disable(struct intel_crtc_state *old_crtc_state,
 	ironlake_pfit_disable(old_crtc_state);
 
 	if (old_crtc_state->has_pch_encoder)
-		ironlake_fdi_disable(crtc);
+		ironlake_fdi_disable(intel_crtc);
 
 	intel_encoders_post_disable(state, intel_crtc);