Convert to use devm_ functions to reduce code size and simplify the code.
Also rename new_client variable, and define new variable for client->dev, to
improve code readability.
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/hwmon/lm77.c | 73 +++++++++++++++++++++++---------------------------
1 file changed, 33 insertions(+), 40 deletions(-)
diff --git a/drivers/hwmon/lm77.c b/drivers/hwmon/lm77.c
index 0fca861..f82acf6 100644
--- a/drivers/hwmon/lm77.c
+++ b/drivers/hwmon/lm77.c
@@ -267,10 +267,9 @@ static const struct attribute_group lm77_group = {
};
/* Return 0 if detection is successful, -ENODEV otherwise */
-static int lm77_detect(struct i2c_client *new_client,
- struct i2c_board_info *info)
+static int lm77_detect(struct i2c_client *client, struct i2c_board_info *info)
{
- struct i2c_adapter *adapter = new_client->adapter;
+ struct i2c_adapter *adapter = client->adapter;
int i, cur, conf, hyst, crit, min, max;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
@@ -292,18 +291,18 @@ static int lm77_detect(struct i2c_client *new_client,
*/
/* addresses cycling */
- cur = i2c_smbus_read_word_data(new_client, 0);
- conf = i2c_smbus_read_byte_data(new_client, 1);
- hyst = i2c_smbus_read_word_data(new_client, 2);
- crit = i2c_smbus_read_word_data(new_client, 3);
- min = i2c_smbus_read_word_data(new_client, 4);
- max = i2c_smbus_read_word_data(new_client, 5);
+ cur = i2c_smbus_read_word_data(client, 0);
+ conf = i2c_smbus_read_byte_data(client, 1);
+ hyst = i2c_smbus_read_word_data(client, 2);
+ crit = i2c_smbus_read_word_data(client, 3);
+ min = i2c_smbus_read_word_data(client, 4);
+ max = i2c_smbus_read_word_data(client, 5);
for (i = 8; i <= 0xff; i += 8) {
- if (i2c_smbus_read_byte_data(new_client, i + 1) != conf
- || i2c_smbus_read_word_data(new_client, i + 2) != hyst
- || i2c_smbus_read_word_data(new_client, i + 3) != crit
- || i2c_smbus_read_word_data(new_client, i + 4) != min
- || i2c_smbus_read_word_data(new_client, i + 5) != max)
+ if (i2c_smbus_read_byte_data(client, i + 1) != conf
+ || i2c_smbus_read_word_data(client, i + 2) != hyst
+ || i2c_smbus_read_word_data(client, i + 3) != crit
+ || i2c_smbus_read_word_data(client, i + 4) != min
+ || i2c_smbus_read_word_data(client, i + 5) != max)
return -ENODEV;
}
@@ -320,17 +319,17 @@ static int lm77_detect(struct i2c_client *new_client,
return -ENODEV;
/* 0x06 and 0x07 return the last read value */
- cur = i2c_smbus_read_word_data(new_client, 0);
- if (i2c_smbus_read_word_data(new_client, 6) != cur
- || i2c_smbus_read_word_data(new_client, 7) != cur)
+ cur = i2c_smbus_read_word_data(client, 0);
+ if (i2c_smbus_read_word_data(client, 6) != cur
+ || i2c_smbus_read_word_data(client, 7) != cur)
return -ENODEV;
- hyst = i2c_smbus_read_word_data(new_client, 2);
- if (i2c_smbus_read_word_data(new_client, 6) != hyst
- || i2c_smbus_read_word_data(new_client, 7) != hyst)
+ hyst = i2c_smbus_read_word_data(client, 2);
+ if (i2c_smbus_read_word_data(client, 6) != hyst
+ || i2c_smbus_read_word_data(client, 7) != hyst)
return -ENODEV;
- min = i2c_smbus_read_word_data(new_client, 4);
- if (i2c_smbus_read_word_data(new_client, 6) != min
- || i2c_smbus_read_word_data(new_client, 7) != min)
+ min = i2c_smbus_read_word_data(client, 4);
+ if (i2c_smbus_read_word_data(client, 6) != min
+ || i2c_smbus_read_word_data(client, 7) != min)
return -ENODEV;
strlcpy(info->type, "lm77", I2C_NAME_SIZE);
@@ -338,31 +337,29 @@ static int lm77_detect(struct i2c_client *new_client,
return 0;
}
-static int lm77_probe(struct i2c_client *new_client,
- const struct i2c_device_id *id)
+static int lm77_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
+ struct device *dev = &client->dev;
struct lm77_data *data;
int err;
- data = kzalloc(sizeof(struct lm77_data), GFP_KERNEL);
- if (!data) {
- err = -ENOMEM;
- goto exit;
- }
+ data = devm_kzalloc(dev, sizeof(struct lm77_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
- i2c_set_clientdata(new_client, data);
+ i2c_set_clientdata(client, data);
data->valid = 0;
mutex_init(&data->update_lock);
/* Initialize the LM77 chip */
- lm77_init_client(new_client);
+ lm77_init_client(client);
/* Register sysfs hooks */
- err = sysfs_create_group(&new_client->dev.kobj, &lm77_group);
+ err = sysfs_create_group(&dev->kobj, &lm77_group);
if (err)
- goto exit_free;
+ return err;
- data->hwmon_dev = hwmon_device_register(&new_client->dev);
+ data->hwmon_dev = hwmon_device_register(dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
goto exit_remove;
@@ -371,10 +368,7 @@ static int lm77_probe(struct i2c_client *new_client,
return 0;
exit_remove:
- sysfs_remove_group(&new_client->dev.kobj, &lm77_group);
-exit_free:
- kfree(data);
-exit:
+ sysfs_remove_group(&dev->kobj, &lm77_group);
return err;
}
@@ -383,7 +377,6 @@ static int lm77_remove(struct i2c_client *client)
struct lm77_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &lm77_group);
- kfree(data);
return 0;
}
--
1.7.9.7
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