__comedi_request_region
EXPORT_SYMBOL_GPL(__comedi_request_region);
ret = __comedi_request_region(dev, start, len);
ret = __comedi_request_region(dev, iobase, I8255_SIZE);
ret = __comedi_request_region(dev, dev->iobase + 0x400,
ret = __comedi_request_region(dev, dev->iobase + DAS16M1_8255_IOBASE,
ret = __comedi_request_region(dev, iobase2, DAS1800_SIZE);
int __comedi_request_region(struct comedi_device *dev,