在不用某个设备时，可以将他卸载，主要是从/proc 中取消某个设备的特殊文件，可用特定的函数实现。上面列举一个字符设备驱动程序的框架.来说明这个过程 -not in a particular equipment, he can be unloaded, mainly from / proc remove certain documents to the special equipment can be used to achieve a specific function. Listed above a character device driver framework. To illustrate this process