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>
Mon, 7 Nov 2016 16:22:46 +0000 (18:22 +0200)
commitcdffe3e252bb55e82ee89bbdfe8d2f18b6157c28
tree35bf8859673c37f8c0271ca4a9ca7745f06ca672
parent8d83bc22b259e5526625b6d298f637786c71129f
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
(cherry picked from commit b64b540931483cca3200d98756bed6ad0e01d75c)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
drivers/gpu/drm/i915/intel_runtime_pm.c