[Intel-gfx] [PATCH 2/2] drm/i915: Serialise i915_active_wait() with its retirement
Chris Wilson
chris at chris-wilson.co.uk
Mon Dec 2 16:33:34 UTC 2019
As the i915_active.retire() may be running on another CPU as we detect
that the i915_active is idle, we may not wait for the retirement itself.
Wait for the remote callback by waiting for the retirement worker.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112424
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
drivers/gpu/drm/i915/i915_active.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/i915/i915_active.c b/drivers/gpu/drm/i915/i915_active.c
index 7553acc5aa16..ff6ba581527a 100644
--- a/drivers/gpu/drm/i915/i915_active.c
+++ b/drivers/gpu/drm/i915/i915_active.c
@@ -472,6 +472,7 @@ int i915_active_wait(struct i915_active *ref)
if (wait_var_event_interruptible(ref, i915_active_is_idle(ref)))
return -EINTR;
+ flush_work(&ref->work);
return 0;
}
--
2.24.0
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