dlfb_submit_urb
dlfb_submit_urb(dlfb, urb, bufptr -
retval = dlfb_submit_urb(dlfb, urb, writesize);
if (dlfb_submit_urb(dlfb, urb, len))
dlfb_submit_urb(dlfb, urb, len);
dlfb_submit_urb(dlfb, urb, len);
static int dlfb_submit_urb(struct dlfb_data *dlfb, struct urb * urb, size_t len);