Linux Input子系统

//input.c
int input_register_handler(struct input_handler *handler)
{
    //此处省略很多代码

    list_for_each_entry(dev, &input_dev_list, node)
        input_attach_handler(dev, handler);

    //此处省略很多代码
    return 0;
}
EXPORT_SYMBOL(input_register_handler);

int input_register_device(struct input_dev *dev)
{
    //此处省略很多代码

    list_for_each_entry(handler, &input_handler_list, node)
        input_attach_handler(dev, handler);

    //此处省略很多代码
}
EXPORT_SYMBOL(input_register_device);