[PATCH v3 03/11] hwmon: (tmp421) introduce a channel struct

[Krzysztof Adamski <krzysztof.adamski@xxxxxxxxx>]

This is a preparatory change. Upcoming patches will introduce more
per-channel parameters so it's worth organizing them into a struct.

Signed-off-by: Krzysztof Adamski <krzysztof.adamski@xxxxxxxxx>
---
 drivers/hwmon/tmp421.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/hwmon/tmp421.c b/drivers/hwmon/tmp421.c
index a4ac6e16d592..f3d59ea347e3 100644
--- a/drivers/hwmon/tmp421.c
+++ b/drivers/hwmon/tmp421.c
@@ -87,6 +87,10 @@ static const struct of_device_id __maybe_unused tmp421_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, tmp421_of_match);
 
+struct tmp421_channel {
+	s16 temp;
+};
+
 struct tmp421_data {
 	struct i2c_client *client;
 	struct mutex update_lock;
@@ -98,7 +102,7 @@ struct tmp421_data {
 	unsigned long last_updated;
 	unsigned long channels;
 	u8 config;
-	s16 temp[MAX_CHANNELS];
+	struct tmp421_channel channel[MAX_CHANNELS];
 };
 
 static int temp_from_raw(u16 reg, bool extended)
@@ -133,12 +137,12 @@ static int tmp421_update_device(struct tmp421_data *data)
 			ret = i2c_smbus_read_byte_data(client, TMP421_TEMP_MSB[i]);
 			if (ret < 0)
 				goto exit;
-			data->temp[i] = ret << 8;
+			data->channel[i].temp = ret << 8;
 
 			ret = i2c_smbus_read_byte_data(client, TMP421_TEMP_LSB[i]);
 			if (ret < 0)
 				goto exit;
-			data->temp[i] |= ret;
+			data->channel[i].temp |= ret;
 		}
 		data->last_updated = jiffies;
 		data->valid = 1;
@@ -167,7 +171,7 @@ static int tmp421_read(struct device *dev, enum hwmon_sensor_types type,
 
 	switch (attr) {
 	case hwmon_temp_input:
-		*val = temp_from_raw(tmp421->temp[channel],
+		*val = temp_from_raw(tmp421->channel[channel].temp,
 				     tmp421->config & TMP421_CONFIG_RANGE);
 		return 0;
 	case hwmon_temp_fault:
@@ -175,7 +179,7 @@ static int tmp421_read(struct device *dev, enum hwmon_sensor_types type,
 		 * Any of OPEN or /PVLD bits indicate a hardware mulfunction
 		 * and the conversion result may be incorrect
 		 */
-		*val = !!(tmp421->temp[channel] & 0x03);
+		*val = !!(tmp421->channel[channel].temp & 0x03);
 		return 0;
 	default:
 		return -EOPNOTSUPP;
-- 
2.31.1