drm/i915/vlv: Prevent enabling hpd polling in late suspend
authorLyude <lyude@redhat.com>
Wed, 26 Oct 2016 16:36:09 +0000 (12:36 -0400)
committerJani Nikula <jani.nikula@intel.com>
Sat, 29 Oct 2016 11:55:43 +0000 (14:55 +0300)
commitb64b540931483cca3200d98756bed6ad0e01d75c
tree767fc7452e748a01194c12b62551a936b9cee8a7
parent80b204bce8f27b52cd65839e0e6144b4452ae3de
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 <lyude@redhat.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Jani Saarinen <jani.saarinen@intel.com>
Cc: Petry Latvala <petri.latvala@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1477499769-1966-1-git-send-email-lyude@redhat.com
drivers/gpu/drm/i915/intel_runtime_pm.c