今天开始做一个ARM做为USB从设备的驱动

在网上搜索了很长时间发现init_module的注册函数都是usb_gadget_register_drive,而我的zero.c中的注册函数为usb_composite_register.之后跟踪代码发现

int usb_composite_register(struct usb_composite_driver *driver)

{

if (!driver || !driver->dev || !driver->bind || composite)

return -EINVAL;

if (!driver->name)

driver->name = "composite";

composite_driver.function =  (char *) driver->name;

composite_driver.driver.name = driver->name;

composite = driver;

return usb_gadget_register_driver(&composite_driver);

}
原来如此.特此记录.