return sprintf(buf, "%d\n", sharpsl_pm.battstat.mainbat_voltage);
}
-static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL);
-static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL);
+static DEVICE_ATTR_RO(battery_percentage);
+static DEVICE_ATTR_RO(battery_voltage);
extern void (*apm_get_power_status)(struct apm_power_info *);