From: Lyude Date: Wed, 26 Oct 2016 16:36:09 +0000 (-0400) Subject: drm/i915/vlv: Prevent enabling hpd polling in late suspend X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b64b540931483cca3200d98756bed6ad0e01d75c;p=linux-beck.git drm/i915/vlv: Prevent enabling hpd polling in late suspend 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 Cc: Ville Syrjälä Cc: Jani Saarinen Cc: Petry Latvala Reviewed-by: Ville Syrjälä Signed-off-by: Jani Nikula Link: http://patchwork.freedesktop.org/patch/msgid/1477499769-1966-1-git-send-email-lyude@redhat.com --- diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index 95034a06d4ad..9a3a7455d29c 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -1113,7 +1113,9 @@ 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); } static void vlv_display_power_well_enable(struct drm_i915_private *dev_priv,