diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 472aaea75ef8..2f2dc029668b 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2846,7 +2846,7 @@ static void ilk_compute_wm_level(const struct drm_i915_private *dev_priv,
 }
 
 static void intel_read_wm_latency(struct drm_i915_private *dev_priv,
-				  u16 wm[8])
+				  u16 wm[])
 {
 	struct intel_uncore *uncore = &dev_priv->uncore;