acpi_power_meter: use the same struct {rw,ro}_sensor_template for both

We don't need both, when we can just key the read/write off of the
presence of the .set member.
Signed-off-by: Kyle McMartin <kyle@redhat.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>

drivers/hwmon/acpi_power_meter.c

@@ -107,15 +107,7 @@ struct acpi_power_meter_resource {
 	struct kobject		*holders_dir;
 };
 
-struct ro_sensor_template {
-	char *label;
-	ssize_t (*show)(struct device *dev,
-			struct device_attribute *devattr,
-			char *buf);
-	int index;
-};
-
-struct rw_sensor_template {
+struct sensor_template {
 	char *label;
 	ssize_t (*show)(struct device *dev,
 			struct device_attribute *devattr,
@@ -470,50 +462,125 @@ static ssize_t show_name(struct device *dev,
 }
 
 /* Sensor descriptions.  If you add a sensor, update NUM_SENSORS above! */
-static struct ro_sensor_template meter_ro_attrs[] = {
-{POWER_AVERAGE_NAME, show_power, 0},
-{"power1_accuracy", show_accuracy, 0},
-{"power1_average_interval_min", show_val, 0},
-{"power1_average_interval_max", show_val, 1},
-{"power1_is_battery", show_val, 5},
-{NULL, NULL, 0},
+static struct sensor_template meter_ro_attrs[] = {
+	{
+		.label = POWER_AVERAGE_NAME,
+		.show  = show_power,
+		.index = 0,
+	},
+	{
+		.label = "power1_accuracy",
+		.show  = show_accuracy,
+		.index = 0,
+	},
+	{	.label = "power1_average_interval_min",
+		.show  = show_val,
+		.index = 0
+	},
+	{
+		.label = "power1_average_interval_max",
+		.show  = show_val,
+		.index = 1,
+	},
+	{
+		.label = "power1_is_battery",
+		.show = show_val,
+		.index = 5,
+	},
+	{},
 };
 
-static struct rw_sensor_template meter_rw_attrs[] = {
-{POWER_AVG_INTERVAL_NAME, show_avg_interval, set_avg_interval, 0},
-{NULL, NULL, NULL, 0},
+static struct sensor_template meter_rw_attrs[] = {
+	{
+		.label = POWER_AVG_INTERVAL_NAME,
+		.show  = show_avg_interval,
+		.set   = set_avg_interval,
+		.index = 0,
+	},
+	{},
 };
 
-static struct ro_sensor_template misc_cap_attrs[] = {
-{"power1_cap_min", show_val, 2},
-{"power1_cap_max", show_val, 3},
-{"power1_cap_hyst", show_val, 4},
-{POWER_ALARM_NAME, show_val, 6},
-{NULL, NULL, 0},
+static struct sensor_template misc_cap_attrs[] = {
+	{
+		.label = "power1_cap_min",
+		.show  = show_val,
+		.index = 2,
+	},
+	{
+		.label = "power1_cap_max",
+		.show  = show_val,
+		.index = 3,
+	},
+	{
+		.label = "power1_cap_hyst",
+		.show  = show_val,
+		.index = 4,
+	},
+	{
+		.label = POWER_ALARM_NAME,
+		.show  = show_val,
+		.index = 6,
+	},
+	{},
 };
 
-static struct ro_sensor_template ro_cap_attrs[] = {
-{POWER_CAP_NAME, show_cap, 0},
-{NULL, NULL, 0},
+static struct sensor_template ro_cap_attrs[] = {
+	{
+		.label = POWER_CAP_NAME,
+		.show  = show_cap,
+		.index = 0,
+	},
+	{},
 };
 
-static struct rw_sensor_template rw_cap_attrs[] = {
-{POWER_CAP_NAME, show_cap, set_cap, 0},
-{NULL, NULL, NULL, 0},
+static struct sensor_template rw_cap_attrs[] = {
+	{
+		.label = POWER_CAP_NAME,
+		.show  = show_cap,
+		.set   = set_cap,
+		.index = 0,
+	},
+	{},
 };
 
-static struct rw_sensor_template trip_attrs[] = {
-{"power1_average_min", show_val, set_trip, 7},
-{"power1_average_max", show_val, set_trip, 8},
-{NULL, NULL, NULL, 0},
+static struct sensor_template trip_attrs[] = {
+	{
+		.label = "power1_average_min",
+		.show  = show_val,
+		.set   = set_trip,
+		.index = 7,
+	},
+	{
+		.label = "power1_average_max",
+		.show  = show_val,
+		.set   = set_trip,
+		.index = 8,
+	},
+	{},
 };
 
-static struct ro_sensor_template misc_attrs[] = {
-{"name", show_name, 0},
-{"power1_model_number", show_str, 0},
-{"power1_oem_info", show_str, 2},
-{"power1_serial_number", show_str, 1},
-{NULL, NULL, 0},
+static struct sensor_template misc_attrs[] = {
+	{
+		.label = "name",
+		.show  = show_name,
+		.index = 0,
+	},
+	{
+		.label = "power1_model_number",
+		.show  = show_str,
+		.index = 0,
+	},
+	{
+		.label = "power1_oem_info",
+		.show  = show_str,
+		.index = 2,
+	},
+	{
+		.label = "power1_serial_number",
+		.show  = show_str,
+		.index = 1,
+	},
+	{},
 };
 
 /* Read power domain data */
@@ -620,7 +687,7 @@ static int read_domain_devices(struct acpi_power_meter_resource *resource)
 
 /* Registration and deregistration */
 static int register_ro_attrs(struct acpi_power_meter_resource *resource,
-			     struct ro_sensor_template *ro)
+			     struct sensor_template *ro)
 {
 	struct device *dev = &resource->acpi_dev->dev;
 	struct sensor_device_attribute *sensors =
@@ -649,7 +716,7 @@ static int register_ro_attrs(struct acpi_power_meter_resource *resource,
 }
 
 static int register_rw_attrs(struct acpi_power_meter_resource *resource,
-			     struct rw_sensor_template *rw)
+			     struct sensor_template *rw)
 {
 	struct device *dev = &resource->acpi_dev->dev;
 	struct sensor_device_attribute *sensors =