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-rw-r--r--linux-core/drm_ttm.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/linux-core/drm_ttm.c b/linux-core/drm_ttm.c
index 293b1f8c..6e132745 100644
--- a/linux-core/drm_ttm.c
+++ b/linux-core/drm_ttm.c
@@ -882,7 +882,15 @@ int drm_ttm_ioctl(drm_file_t *priv, drm_ttm_arg_t __user *data)
mutex_unlock(&dev->struct_mutex);
break;
case drm_ttm_reference:
- return drm_user_object_ref(priv, arg.handle, drm_ttm_type, &uo);
+ ret = drm_user_object_ref(priv, arg.handle, drm_ttm_type, &uo);
+ if (ret)
+ return ret;
+ mutex_lock(&dev->struct_mutex);
+ uo = drm_lookup_user_object(priv, arg.handle);
+ entry = drm_user_object_entry(uo, drm_ttm_object_t, base);
+ arg.user_token = entry->map_list.user_token;
+ mutex_unlock(&dev->struct_mutex);
+ break;
case drm_ttm_unreference:
return drm_user_object_unref(priv, arg.handle, drm_ttm_type);
case drm_ttm_destroy: