diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 1d1c56961b392660dbdd1c02138579978193c2c1..53b706154c94a0628cd48ea8a93bde7376315eaa 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4826,9 +4826,8 @@ skl_compute_linetime_wm(const struct intel_crtc_state *cstate)
 	linetime_us = intel_get_linetime_us(cstate);
 	linetime_wm = fixed16_to_u32_round_up(mul_u32_fixed16(8, linetime_us));
 
-	/* Display WA #1135: bxt:ALL GLK:ALL */
-	if ((IS_BROXTON(dev_priv) || IS_GEMINILAKE(dev_priv)) &&
-	    dev_priv->ipc_enabled)
+	/* Display WA #1135: BXT:ALL GLK:ALL */
+	if (IS_GEN9_LP(dev_priv) && dev_priv->ipc_enabled)
 		linetime_wm /= 2;
 
 	return linetime_wm;