635     struct usbdevfs_urb *urb = calloc(1, sizeof(struct usbdevfs_urb));  in usb_request_new()  local
636     if (!urb)  in usb_request_new()
640         urb->type = USBDEVFS_URB_TYPE_BULK;  in usb_request_new()
642         urb->type = USBDEVFS_URB_TYPE_INTERRUPT;  in usb_request_new()
645         free(urb);  in usb_request_new()
648     urb->endpoint = ep_desc->bEndpointAddress;  in usb_request_new()
652         free(urb);  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()
673     struct usbdevfs_urb *urb = (struct usbdevfs_urb*)req->private_data;  in usb_request_queue()  local
676     urb->status = -1;  in usb_request_queue()
677     urb->buffer = req->buffer;  in usb_request_queue()
680         urb->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()
707     struct usbdevfs_urb *urb = NULL;  in usb_request_wait()  local
709                                        USBDEVFS_REAPURBNDELAY, &urb));  in usb_request_wait()
716         D("[ urb @%p status = %d, actual = %d ]\n", urb, urb->status, urb->actual_length);  in usb_request_wait()
718         struct usb_request *req = (struct usb_request*)urb->usercontext;  in usb_request_wait()
719         req->actual_length = urb->actual_length;  in usb_request_wait()
727     struct usbdevfs_urb *urb = ((struct usbdevfs_urb*)req->private_data);  in usb_request_cancel()  local
728     return ioctl(req->dev->fd, USBDEVFS_DISCARDURB, urb);  in usb_request_cancel()