tree bf3a033bc07e7d512dab9bf5e7fb2e5492ae0edf
parent 0bb21c9677e5a5e2355f4f81a4e48afe62257a75
author Thierry Reding <treding@nvidia.com> 1568643565 +0200
committer Ben Skeggs <bskeggs@redhat.com> 1568695816 +1000

drm/nouveau: Fix ordering between TTM and GEM release

When the last reference to a TTM BO is dropped, ttm_bo_release() will
acquire the DMA reservation object's wound/wait mutex while trying to
clean up (ttm_bo_cleanup_refs_or_queue() via ttm_bo_release()). It is
therefore essential that drm_gem_object_release() be called after the
TTM BO has been uninitialized, otherwise drm_gem_object_release() has
already destroyed the wound/wait mutex (via dma_resv_fini()).

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>