spin_unlock_irq(&fman->lock);
 }
 
-void vmw_fences_perform_actions(struct vmw_fence_manager *fman,
+static void vmw_fences_perform_actions(struct vmw_fence_manager *fman,
                                struct list_head *list)
 {
        struct vmw_fence_action *action, *next_action;
  * Note that the action callbacks may be executed before this function
  * returns.
  */
-void vmw_fence_obj_add_action(struct vmw_fence_obj *fence,
+static void vmw_fence_obj_add_action(struct vmw_fence_obj *fence,
                              struct vmw_fence_action *action)
 {
        struct vmw_fence_manager *fman = fence->fman;
        struct drm_vmw_event_fence event;
 };
 
-int vmw_event_fence_action_create(struct drm_file *file_priv,
+static int vmw_event_fence_action_create(struct drm_file *file_priv,
                                  struct vmw_fence_obj *fence,
                                  uint32_t flags,
                                  uint64_t user_data,