Make the lockchains more deterministic via i915_active by flagging the
potential lock.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_active.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_active.c
b/drivers/gpu/drm/i915/i915_active.c
index cb6a1eadf7df..a55a0a954d74 100644
--- a/drivers/gpu/drm/i915/i915_active.c
+++ b/drivers/gpu/drm/i915/i915_active.c
@@ -268,6 +268,8 @@ int i915_active_wait(struct i915_active *ref)
int err;
might_sleep();
+ might_lock(&ref->mutex);
+
if (RB_EMPTY_ROOT(&ref->tree))
return 0;
--
2.20.1
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