Assert that we do not try to unsubmit a completed request, as should we
try to resubmit it later, the ring is already past the request's
breadcrumb and the breadcrumb will not be updated.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_gem_request.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_gem_request.c
b/drivers/gpu/drm/i915/i915_gem_request.c
index 9b02310307fc..7192521e3d10 100644
--- a/drivers/gpu/drm/i915/i915_gem_request.c
+++ b/drivers/gpu/drm/i915/i915_gem_request.c
@@ -652,6 +652,8 @@ void __i915_gem_request_unsubmit(struct
drm_i915_gem_request *request)
*/
GEM_BUG_ON(!request->global_seqno);
GEM_BUG_ON(request->global_seqno != engine->timeline->seqno);
+ GEM_BUG_ON(i915_seqno_passed(intel_engine_get_seqno(engine),
+ request->global_seqno));
engine->timeline->seqno--;
/* We may be recursing from the signal callback of another i915 fence */
--
2.15.1
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