diff options
author | Guenter Roeck <linux@roeck-us.net> | 2012-02-22 08:56:47 -0800 |
---|---|---|
committer | Guenter Roeck <guenter.roeck@ericsson.com> | 2012-03-18 18:27:48 -0700 |
commit | f15df57ded710bd018794a264b900975ce3599a0 (patch) | |
tree | ca1b652e423860d7d01eca040af4ccdd94b5c73d /drivers | |
parent | 918ddef35f518407d6ed6e72faf6df75e49cee24 (diff) |
hwmon: (jc42) Convert to use devm_kzalloc
Marginally less code and eliminate the possibility of memory leaks.
Also replace new_client variable with client and introduce dev variable to make
the code a bit easier to read.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/hwmon/jc42.c | 60 |
1 files changed, 25 insertions, 35 deletions
diff --git a/drivers/hwmon/jc42.c b/drivers/hwmon/jc42.c index 877e1593655..a002bdac470 100644 --- a/drivers/hwmon/jc42.c +++ b/drivers/hwmon/jc42.c @@ -469,20 +469,19 @@ static const struct attribute_group jc42_group = { }; /* Return 0 if detection is successful, -ENODEV otherwise */ -static int jc42_detect(struct i2c_client *new_client, - struct i2c_board_info *info) +static int jc42_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, config, cap, manid, devid; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA)) return -ENODEV; - cap = i2c_smbus_read_word_swapped(new_client, JC42_REG_CAP); - config = i2c_smbus_read_word_swapped(new_client, JC42_REG_CONFIG); - manid = i2c_smbus_read_word_swapped(new_client, JC42_REG_MANID); - devid = i2c_smbus_read_word_swapped(new_client, JC42_REG_DEVICEID); + cap = i2c_smbus_read_word_swapped(client, JC42_REG_CAP); + config = i2c_smbus_read_word_swapped(client, JC42_REG_CONFIG); + manid = i2c_smbus_read_word_swapped(client, JC42_REG_MANID); + devid = i2c_smbus_read_word_swapped(client, JC42_REG_DEVICEID); if (cap < 0 || config < 0 || manid < 0 || devid < 0) return -ENODEV; @@ -501,47 +500,42 @@ static int jc42_detect(struct i2c_client *new_client, return -ENODEV; } -static int jc42_probe(struct i2c_client *new_client, - const struct i2c_device_id *id) +static int jc42_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct jc42_data *data; int config, cap, err; + struct device *dev = &client->dev; - data = kzalloc(sizeof(struct jc42_data), GFP_KERNEL); - if (!data) { - err = -ENOMEM; - goto exit; - } + data = devm_kzalloc(dev, sizeof(struct jc42_data), GFP_KERNEL); + if (!data) + return -ENOMEM; - i2c_set_clientdata(new_client, data); + i2c_set_clientdata(client, data); mutex_init(&data->update_lock); - cap = i2c_smbus_read_word_swapped(new_client, JC42_REG_CAP); - if (cap < 0) { - err = -EINVAL; - goto exit_free; - } + cap = i2c_smbus_read_word_swapped(client, JC42_REG_CAP); + if (cap < 0) + return cap; + data->extended = !!(cap & JC42_CAP_RANGE); - config = i2c_smbus_read_word_swapped(new_client, JC42_REG_CONFIG); - if (config < 0) { - err = -EINVAL; - goto exit_free; - } + config = i2c_smbus_read_word_swapped(client, JC42_REG_CONFIG); + if (config < 0) + return config; + data->orig_config = config; if (config & JC42_CFG_SHUTDOWN) { config &= ~JC42_CFG_SHUTDOWN; - i2c_smbus_write_word_swapped(new_client, JC42_REG_CONFIG, - config); + i2c_smbus_write_word_swapped(client, JC42_REG_CONFIG, config); } data->config = config; /* Register sysfs hooks */ - err = sysfs_create_group(&new_client->dev.kobj, &jc42_group); + err = sysfs_create_group(&dev->kobj, &jc42_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; @@ -550,10 +544,7 @@ static int jc42_probe(struct i2c_client *new_client, return 0; exit_remove: - sysfs_remove_group(&new_client->dev.kobj, &jc42_group); -exit_free: - kfree(data); -exit: + sysfs_remove_group(&dev->kobj, &jc42_group); return err; } @@ -565,7 +556,6 @@ static int jc42_remove(struct i2c_client *client) if (data->config != data->orig_config) i2c_smbus_write_word_swapped(client, JC42_REG_CONFIG, data->orig_config); - kfree(data); return 0; } |