On 10/15/12 2:51 PM, Paulo Zanoni wrote: > diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c > index f48986b9..ba40aa7 100644 > --- a/drivers/gpu/drm/i915/intel_display.c > +++ b/drivers/gpu/drm/i915/intel_display.c > @@ -5356,7 +5356,8 @@ static int haswell_crtc_mode_set(struct drm_crtc *crtc, > > intel_set_pipe_timings(intel_crtc, mode, adjusted_mode); > > - ironlake_set_m_n(crtc, mode, adjusted_mode); > + if (!(is_dp && !is_cpu_edp)) > + ironlake_set_m_n(crtc, mode, adjusted_mode); The double-negation here hurts my brain. I think this would be clearer and equivalent phrased positively: if (!is_dp || is_pch_edp) ironlake_set_m_n(crtc, mode, adjusted_mode); - ajax