diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2018-08-08 22:08:42 +0100 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2018-08-15 13:41:05 -0700 |
| commit | 3af71f649d22f359790b4032446456a967a81742 (patch) | |
| tree | 1dbb3bf3fa0ee11c05c7d612de13929abd032050 /drivers/gpu/drm/i915/selftests | |
| parent | 341a15bb91d478c33d97b3b452a55181e5db6ea6 (diff) | |
drm/i915: Restore user forcewake domains across suspend
On suspend, we cancel the automatic forcewake and clear all other sources
of forcewake so the machine can sleep before we do suspend. However, we
expose the forcewake to userspace (only via debugfs, but nevertheless we
do) and want to restore that upon resume or else our accounting will be
off and we may not acquire the forcewake before we use it. So record
which domains we cleared on suspend and reacquire them early on resume.
v2: Hold the spinlock to appease our sanitychecks
v3: s/fw_domains_user/fw_domains_saved/ to convey intent more clearly
Reported-by: Imre Deak <imre.deak@linux.intel.com>
Fixes: b8473050805f ("drm/i915: Fix forcewake active domain tracking")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Imre Deak <imre.deak@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180808210842.3555-1-chris@chris-wilson.co.uk
(cherry picked from commit d60996ab430c8a6033a0944c068edc5ec5becb9b)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/selftests')
| -rw-r--r-- | drivers/gpu/drm/i915/selftests/intel_uncore.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/selftests/intel_uncore.c b/drivers/gpu/drm/i915/selftests/intel_uncore.c index 47bc5b2ddb56..81d9d31042a9 100644 --- a/drivers/gpu/drm/i915/selftests/intel_uncore.c +++ b/drivers/gpu/drm/i915/selftests/intel_uncore.c @@ -160,7 +160,7 @@ static int intel_uncore_check_forcewake_domains(struct drm_i915_private *dev_pri i915_reg_t reg = { offset }; iosf_mbi_punit_acquire(); - intel_uncore_forcewake_reset(dev_priv, false); + intel_uncore_forcewake_reset(dev_priv); iosf_mbi_punit_release(); check_for_unclaimed_mmio(dev_priv); |