Linux设备驱动手册中Linux设备模型是对系统设备组织架构进行抽象的一个数据结构，旨在为设备驱动进行分层、分类、组织。降低设备多样性带来的Linux驱动开发的复杂度，以及设备热拔插处理、电源管理等。(Linux device driver of Linux device model manual is an abstract data structure architecture of system equipment organization, aiming at the device driver layer, classification, organization. Reduce the diversity of Linux equipment driver development complexity, and equipment of hot plug processing, power management etc..)