static ssize_t hvcs_index_show(struct device *dev, char *buf)
static ssize_t hvcs_index_show(struct device *dev, struct device_attribute *attr, char *buf)
static ssize_t hvcs_index_show(struct device *dev, char *buf){	struct vio_dev *viod = to_vio_dev(dev);	struct hvcs_struct *hvcsd = from_vio_dev(viod);	unsigned long flags;	int retval;	spin_lock_irqsave(&hvcsd->lock, flags);	retval = sprintf(buf, "%d\n", hvcsd->index);	spin_unlock_irqrestore(&hvcsd->lock, flags);	return retval;}