diff --git a/[refs] b/[refs]
index c5a434dc05a0..834e1e693c49 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6b25a88752e8e9dc33c700712059b094d3da3219
+refs/heads/master: d5f21e4072645d0174ed4cc7197e0e30f84f96a2
diff --git a/trunk/drivers/gpu/drm/i915/intel_pm.c b/trunk/drivers/gpu/drm/i915/intel_pm.c
index bec1f9ffba2d..f024e7dcc2c7 100644
--- a/trunk/drivers/gpu/drm/i915/intel_pm.c
+++ b/trunk/drivers/gpu/drm/i915/intel_pm.c
@@ -4053,6 +4053,9 @@ void intel_set_power_well(struct drm_device *dev, bool enable)
 	bool is_enabled, enable_requested;
 	uint32_t tmp;
 
+	if (!IS_HASWELL(dev))
+		return;
+
 	tmp = I915_READ(HSW_PWR_WELL_DRIVER);
 	is_enabled = tmp & HSW_PWR_WELL_STATE;
 	enable_requested = tmp & HSW_PWR_WELL_ENABLE;