热度：4615239
Linux-USB Gadget 驱动框架（以下简称 Gadget ）实现了 USB 协议定义的设备端的软件功能。相对于 Linux USB 主机端（ Host ） 驱动而言， Gadget 驱动出现较晚，它出现在 2.4.23 以后， Since talking about a USB Device Driver becomes ambiguous when both sides of the protocol stack can run Linux, Linux-USB developers have chosen new terminology. A USB Device Driver is what current Linux kernels have: a Host-side driver. A Device-side driver is instead called a USB Gadget Driver ... thats why the new name.