From: Ville Syrjälä <[email protected]> Apparently we can have requests even if though the active list is empty, so do the request retirement regardless of whether there's anything on the active list.
The way it happened here is that during suspend intel_ring_idle() notices the olr hanging around and then proceeds to get rid of it by adding a request. However since there was nothing on the active lists i915_gem_retire_requests() didn't clean those up, and so the idle work never runs, and we leave the GPU "busy" during suspend resulting in a WARN later. Signed-off-by: Ville Syrjälä <[email protected]> --- drivers/gpu/drm/i915/i915_gem.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index be35f04..c35e035 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2813,9 +2813,6 @@ i915_gem_retire_requests_ring(struct intel_engine_cs *ring) { WARN_ON(i915_verify_lists(ring->dev)); - if (list_empty(&ring->active_list)) - return; - /* Retire requests first as we use it above for the early return. * If we retire requests last, we may use a later seqno and so clear * the requests lists without clearing the active list, leading to -- 2.3.6 _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
