diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c
index 8e4e829682b9405113222f3b27cc89f5495d2cca..ff9ecd211abbb07fd8bae3fb6d55a8c33b23770d 100644
--- a/drivers/gpu/drm/i915/intel_color.c
+++ b/drivers/gpu/drm/i915/intel_color.c
@@ -107,7 +107,7 @@ static void ctm_mult_by_limited(uint64_t *result, int64_t *input)
 	}
 }
 
-void i9xx_load_ycbcr_conversion_matrix(struct intel_crtc *intel_crtc)
+static void i9xx_load_ycbcr_conversion_matrix(struct intel_crtc *intel_crtc)
 {
 	int pipe = intel_crtc->pipe;
 	struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);