static ssize_t dio_show_ipl(struct device *dev, char *buf)
static ssize_t dio_show_ipl(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t dio_show_ipl(struct device *dev, char *buf){	struct dio_dev *d;	d = to_dio_dev(dev);	return sprintf(buf, "0x%02x\n", d->ipl);}