diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_request.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c index 99056b948eda..e614398abe2f 100644 --- a/drivers/gpu/drm/i915/i915_gem_request.c +++ b/drivers/gpu/drm/i915/i915_gem_request.c @@ -851,6 +851,13 @@ void __i915_add_request(struct drm_i915_gem_request *request, bool flush_caches) lockdep_assert_held(&request->i915->drm.struct_mutex); trace_i915_gem_request_add(request); + /* Make sure that no request gazumped us - if it was allocated after + * our i915_gem_request_alloc() and called __i915_add_request() before + * us, the timeline will hold its seqno which is later than ours. + */ + GEM_BUG_ON(i915_seqno_passed(timeline->last_submitted_seqno, + request->fence.seqno)); + /* * To ensure that this call will not fail, space for its emissions * should already have been reserved in the ring buffer. Let the ring |