From: Paulo Zanoni <paulo.r.zanoni at intel.com> And the SNB_READ_WM0_LATENCY macro is not valid anymore because we have the "New WM0" at 63:56, so the "Old WM0" could maybe be zero if the new one is not zero. Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com> --- drivers/gpu/drm/i915/intel_pm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 59bac2e..b56de92 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4491,7 +4491,7 @@ void intel_init_pm(struct drm_device *dev) } dev_priv->display.init_clock_gating = ivybridge_init_clock_gating; } else if (IS_HASWELL(dev)) { - if (SNB_READ_WM0_LATENCY()) { + if (I915_READ64(MCH_SSKPD)) { dev_priv->display.update_wm = haswell_update_wm; dev_priv->display.update_sprite_wm = sandybridge_update_sprite_wm; } else { -- 1.7.10.4