diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index c78674ef616f4935885e13f1359ed6f36903336d..1d1c56961b392660dbdd1c02138579978193c2c1 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4824,10 +4824,6 @@ skl_compute_linetime_wm(const struct intel_crtc_state *cstate)
 	u32 linetime_wm;
 
 	linetime_us = intel_get_linetime_us(cstate);
-
-	if (is_fixed16_zero(linetime_us))
-		return 0;
-
 	linetime_wm = fixed16_to_u32_round_up(mul_u32_fixed16(8, linetime_us));
 
 	/* Display WA #1135: bxt:ALL GLK:ALL */