但是，比如一个打印机驱动程序突然把接磁盘驱动所需的核心代码删除掉，操作系统就会出现部分停顿。
But if, say, a printer driver suddenly erases the kernel code needed to access the disk drive, the operating system will have part of its brain cut out.
传送请求完成后，核心会使用以前注册的回调函数来通知驱动程序。
The core notifies the driver using previously registered callback functions after the transfer request is completed.
linux卡服务核心与主机控制器设备驱动程序、卡设备驱动程序及用户模式cardmgr后台进程交互。
The Linux card services core interacts with the host controller device driver, the card device drivers, and the user mode cardmgr daemon.
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