On Wed, Mar 13, 2013 at 11:21:04AM -0700, Ben Widawsky wrote: > Signed-off-by: Ben Widawsky <ben at bwidawsk.net> > --- > 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 52203fd..3166aa4 100644 > --- a/drivers/gpu/drm/i915/intel_pm.c > +++ b/drivers/gpu/drm/i915/intel_pm.c > @@ -4175,7 +4175,7 @@ void intel_init_pm(struct drm_device *dev) > dev_priv->display.init_clock_gating = gen6_init_clock_gating; > } else if (IS_IVYBRIDGE(dev)) { > /* FIXME: detect B0+ stepping and use auto training */ > - if (SNB_READ_WM0_LATENCY()) { > + if (SNB_READ_WM0_LATENCY() && !HAS_PCH_NOP(dev)) { Check for platform support first? -Chris -- Chris Wilson, Intel Open Source Technology Centre