On Wed, Oct 26, 2016 at 12:36:09PM -0400, Lyude wrote: > One of the CI machines began to run into issues with the hpd poller > suddenly waking up in the midst of the late suspend phase. It looks like > this is getting caused by the fact we now deinitialize power wells in > late suspend, which means that intel_hpd_poll_init() gets called in late > suspend causing polling to get re-enabled. So, when deinitializing power > wells on valleyview we now refrain from enabling polling in the midst of > suspend. > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98040 > Fixes: 19625e85c6ec ("drm/i915: Enable polling when we don't have hpd") > Signed-off-by: Lyude <lyude@xxxxxxxxxx> > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > Cc: Jani Saarinen <jani.saarinen@xxxxxxxxx> > Cc: Petry Latvala <petri.latvala@xxxxxxxxx> > --- > drivers/gpu/drm/i915/intel_runtime_pm.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c > index 82edba2..ac85482 100644 > --- a/drivers/gpu/drm/i915/intel_runtime_pm.c > +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c > @@ -1138,7 +1138,9 @@ static void vlv_display_power_well_deinit(struct drm_i915_private *dev_priv) > > intel_power_sequencer_reset(dev_priv); > > - intel_hpd_poll_init(dev_priv); > + /* Prevent us from re-enabling polling on accident in late suspend */ > + if (!dev_priv->drm.dev->power.is_suspended) > + intel_hpd_poll_init(dev_priv); The flag would appear to get set between suspend and suspend_late, so looks like this should be sufficient for our purposes. Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > } > > static void vlv_display_power_well_enable(struct drm_i915_private *dev_priv, > -- > 2.7.4 -- Ville Syrjälä Intel OTC _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
