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usb gadget驱动问题

通过内核(kernel-3.2自带的gadget测试程序zero.c生成模块g_zero.ko,加载到am335x的开发板后,将开发板用usb线连接到PC(win7 32位),PC上能识别到Gadget Zero这个设备,但安装驱动时显示未能成功安装驱动,这个是什么原因?主机端的驱动需要自己下载安装吗?