[PATCH 01/10] drm/i915: Print wakeref debug even with wakerefs held

[Imre Deak]

It's useful to know where wakeref leaks originate during unload and
suspend, so print those even if there are wakeref holders.

Since this also clears the wakeref tracking table, a later RPM ref put
will trigger an unknown wakeref WARN, but probably rightly so, because
the put happened too late.

Signed-off-by: Imre Deak <imre.deak at intel.com>
---
 drivers/gpu/drm/i915/intel_runtime_pm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 30e7cb9d5801..a0ea38319841 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -4521,12 +4521,12 @@ void intel_runtime_pm_cleanup(struct drm_i915_private *i915)
 	struct i915_runtime_pm *rpm = &i915->runtime_pm;
 	int count;
 
-	count = atomic_fetch_inc(&rpm->wakeref_count); /* balance untrack */
+	count = atomic_xchg(&rpm->wakeref_count, 1); /* force printing */
 	WARN(count,
 	     "i915->runtime_pm.wakeref_count=%d on cleanup\n",
 	     count);
-
 	untrack_intel_runtime_pm_wakeref(i915);
+	atomic_add(count, &rpm->wakeref_count);
 }
 
 void intel_runtime_pm_init_early(struct drm_i915_private *i915)
-- 
2.17.1