hwmon: use simple i2c probe function (take 2)

Many hwmon drivers don't use the id information provided by the old
i2c probe function, and the remainder can easily be adapted to the new
form ("probe_new") by calling i2c_match_id explicitly.

This avoids scanning the identifier tables during probes.

Drivers which didn't use the id are converted as-is; drivers which did
are modified to call i2c_match_id() with the same level of
error-handling (if any) as before.

This patch wraps up the transition for hwmon, with four stragglers not
included in the previous large patch.

Signed-off-by: Stephen Kitt <steve@sk2.org>
Link: https://lore.kernel.org/r/20200821160354.594715-1-steve@sk2.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/adc128d818.c

@@ -427,8 +427,7 @@ static int adc128_init_client(struct adc128_data *data)
 	return 0;
 }
 
-static int adc128_probe(struct i2c_client *client,
-			const struct i2c_device_id *id)
+static int adc128_probe(struct i2c_client *client)
 {
 	struct device *dev = &client->dev;
 	struct regulator *regulator;
@@ -524,7 +523,7 @@ static struct i2c_driver adc128_driver = {
 		.name	= "adc128d818",
 		.of_match_table = of_match_ptr(adc128_of_match),
 	},
-	.probe		= adc128_probe,
+	.probe_new	= adc128_probe,
 	.remove		= adc128_remove,
 	.id_table	= adc128_id,
 	.detect		= adc128_detect,

drivers/hwmon/ads7828.c

@@ -99,8 +99,9 @@ static const struct regmap_config ads2830_regmap_config = {
 	.val_bits = 8,
 };
 
-static int ads7828_probe(struct i2c_client *client,
-			 const struct i2c_device_id *id)
+static const struct i2c_device_id ads7828_device_ids[];
+
+static int ads7828_probe(struct i2c_client *client)
 {
 	struct device *dev = &client->dev;
 	struct ads7828_platform_data *pdata = dev_get_platdata(dev);
@@ -141,7 +142,7 @@ static int ads7828_probe(struct i2c_client *client,
 		chip = (enum ads7828_chips)
 			of_device_get_match_data(&client->dev);
 	else
-		chip = id->driver_data;
+		chip = i2c_match_id(ads7828_device_ids, client)->driver_data;
 
 	/* Bound Vref with min/max values */
 	vref_mv = clamp_val(vref_mv, ADS7828_EXT_VREF_MV_MIN,
@@ -207,7 +208,7 @@ static struct i2c_driver ads7828_driver = {
 	},
 
 	.id_table = ads7828_device_ids,
-	.probe = ads7828_probe,
+	.probe_new = ads7828_probe,
 };
 
 module_i2c_driver(ads7828_driver);

drivers/hwmon/lm87.c

@@ -912,7 +912,7 @@ static int lm87_init_client(struct i2c_client *client)
 	return 0;
 }
 
-static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id)
+static int lm87_probe(struct i2c_client *client)
 {
 	struct lm87_data *data;
 	struct device *hwmon_dev;
@@ -994,7 +994,7 @@ static struct i2c_driver lm87_driver = {
 		.name	= "lm87",
 		.of_match_table = lm87_of_match,
 	},
-	.probe		= lm87_probe,
+	.probe_new	= lm87_probe,
 	.id_table	= lm87_id,
 	.detect		= lm87_detect,
 	.address_list	= normal_i2c,

drivers/hwmon/w83795.c

@@ -2134,8 +2134,9 @@ static void w83795_apply_temp_config(struct w83795_data *data, u8 config,
 	}
 }
 
-static int w83795_probe(struct i2c_client *client,
-			const struct i2c_device_id *id)
+static const struct i2c_device_id w83795_id[];
+
+static int w83795_probe(struct i2c_client *client)
 {
 	int i;
 	u8 tmp;
@@ -2148,7 +2149,7 @@ static int w83795_probe(struct i2c_client *client,
 		return -ENOMEM;
 
 	i2c_set_clientdata(client, data);
-	data->chip_type = id->driver_data;
+	data->chip_type = i2c_match_id(w83795_id, client)->driver_data;
 	data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
 	mutex_init(&data->update_lock);
 
@@ -2256,7 +2257,7 @@ static struct i2c_driver w83795_driver = {
 	.driver = {
 		   .name = "w83795",
 	},
-	.probe		= w83795_probe,
+	.probe_new	= w83795_probe,
 	.remove		= w83795_remove,
 	.id_table	= w83795_id,