play with usb

1)

struct usbdevfs_bulktransfer {
        unsigned int ep;
        unsigned int len;
        unsigned int timeout; /* in milliseconds */
        void __user *data;
};
till now, I can't forget the interviewer in 2014 in tecent, who let me write assembly code fast.

posted @ 2017-01-07 17:07  honpey  阅读(197)  评论(0编辑  收藏  举报