static ssize_t i2o_exec_show_product_id(struct device *d, char *buf)
static ssize_t i2o_exec_show_product_id(struct device *d, struct device_attribute *attr, char *buf)
static ssize_t i2o_exec_show_product_id(struct device *d, char *buf){	struct i2o_device *dev = to_i2o_device(d);	u16 id;	if (i2o_parm_field_get(dev, 0x0000, 1, &id, 2)) {		sprintf(buf, "0x%04x", id);		return strlen(buf) + 1;	}	return 0;};