650     struct usb_request *req = calloc(1, sizeof(struct usb_request));  in usb_request_new()  local
651     if (!req) {  in usb_request_new()
656     req->dev = dev;  in usb_request_new()
657     req->max_packet_size = __le16_to_cpu(ep_desc->wMaxPacketSize);  in usb_request_new()
658     req->private_data = urb;  in usb_request_new()
659     req->endpoint = urb->endpoint;  in usb_request_new()
660     urb->usercontext = req;  in usb_request_new()
662     return req;  in usb_request_new()
665 void usb_request_free(struct usb_request *req)  in usb_request_free()  argument
667     free(req->private_data);  in usb_request_free()
668     free(req);  in usb_request_free()
671 int usb_request_queue(struct usb_request *req)  in usb_request_queue()  argument
673     struct usbdevfs_urb *urb = (struct usbdevfs_urb*)req->private_data;  in usb_request_queue()
677     urb->buffer = req->buffer;  in usb_request_queue()
679     if (req->buffer_length > MAX_USBFS_BUFFER_SIZE)  in usb_request_queue()
682         urb->buffer_length = req->buffer_length;  in usb_request_queue()
685         res = ioctl(req->dev->fd, USBDEVFS_SUBMITURB, urb);  in usb_request_queue()
718         struct usb_request *req = (struct usb_request*)urb->usercontext;  in usb_request_wait()  local
719         req->actual_length = urb->actual_length;  in usb_request_wait()
721         return req;  in usb_request_wait()
725 int usb_request_cancel(struct usb_request *req)  in usb_request_cancel()  argument
727     struct usbdevfs_urb *urb = ((struct usbdevfs_urb*)req->private_data);  in usb_request_cancel()
728     return ioctl(req->dev->fd, USBDEVFS_DISCARDURB, urb);  in usb_request_cancel()