binderfs_binder_device_create
ret = binderfs_binder_device_create(inode, device, &device_req);
ret = binderfs_binder_device_create(inode, NULL, &device_info);
ret = binderfs_binder_device_create(inode, device, &device_req);
ret = binderfs_binder_device_create(inode, NULL, &device_info);