vmw_user_bo_reference 777 drivers/gpu/drm/vmwgfx/vmwgfx_drv.h extern int vmw_user_bo_reference(struct ttm_object_file *tfile, vmw_user_bo_reference 1722 drivers/gpu/drm/vmwgfx/vmwgfx_surface.c ret = vmw_user_bo_reference(tfile, srf->res.backup, &backup_handle);