return -ENOENT;
                }
                nvbo = gem->driver_private;
 +              if (nvbo == res_bo) {
 +                      res_bo = NULL;
 +                      drm_gem_object_unreference_unlocked(gem);
 +                      continue;
 +              }
  
                if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
-                       NV_ERROR(drm, "multiple instances of buffer %d on "
+                       NV_ERROR(cli, "multiple instances of buffer %d on "
                                      "validation list\n", b->handle);
                        drm_gem_object_unreference_unlocked(gem);
                        validate_fini(op, NULL);
                ret = ttm_bo_reserve(&nvbo->bo, true, false, true, sequence);
                if (ret) {
                        validate_fini(op, NULL);
 -                      if (unlikely(ret == -EAGAIN))
 -                              ret = ttm_bo_wait_unreserved(&nvbo->bo, true);
 -                      drm_gem_object_unreference_unlocked(gem);
 +                      if (unlikely(ret == -EAGAIN)) {
 +                              sequence = atomic_add_return(1, &drm->ttm.validate_sequence);
 +                              ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 +                                                            sequence);
 +                              if (!ret)
 +                                      res_bo = nvbo;
 +                      }
                        if (unlikely(ret)) {
 +                              drm_gem_object_unreference_unlocked(gem);
                                if (ret != -ERESTARTSYS)
-                                       NV_ERROR(drm, "fail reserve\n");
+                                       NV_ERROR(cli, "fail reserve\n");
                                return ret;
                        }
 -                      goto retry;
                }
  
                b->user_priv = (uint64_t)(unsigned long)nvbo;