On Wed, 26 Oct 2016, Ville Syrjälä <ville.syrj...@linux.intel.com> wrote: > 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 <ly...@redhat.com> >> Cc: Ville Syrjälä <ville.syrj...@linux.intel.com> >> Cc: Jani Saarinen <jani.saari...@intel.com> >> Cc: Petry Latvala <petri.latv...@intel.com> >> --- >> 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.syrj...@linux.intel.com>
Pushed to drm-intel-next-queued, thanks for the patch and review. BR, Jani. > >> } >> >> static void vlv_display_power_well_enable(struct drm_i915_private *dev_priv, >> -- >> 2.7.4 -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
