hwmon: (pcf8591) Convert to use devm_ functions

Convert to use devm_ functions to reduce code size and simplify the code.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>

diff --git a/drivers/hwmon/pcf8591.c b/drivers/hwmon/pcf8591.c
index 4174c7463d7034fa49632b7ecdfec6aaa944d3ab..825883d29002ef1b1f212a3dc02210b9511dd352 100644 (file)
--- a/drivers/hwmon/pcf8591.c
+++ b/drivers/hwmon/pcf8591.c
@@ -200,11 +200,10 @@ static int pcf8591_probe(struct i2c_client *client,
        struct pcf8591_data *data;
        int err;
 
-       data = kzalloc(sizeof(struct pcf8591_data), GFP_KERNEL);
-       if (!data) {
-               err = -ENOMEM;
-               goto exit;
-       }
+       data = devm_kzalloc(&client->dev, sizeof(struct pcf8591_data),
+                           GFP_KERNEL);
+       if (!data)
+               return -ENOMEM;
 
        i2c_set_clientdata(client, data);
        mutex_init(&data->update_lock);
@@ -215,7 +214,7 @@ static int pcf8591_probe(struct i2c_client *client,
        /* Register sysfs hooks */
        err = sysfs_create_group(&client->dev.kobj, &pcf8591_attr_group);
        if (err)
-               goto exit_kfree;
+               return err;
 
        /* Register input2 if not in "two differential inputs" mode */
        if (input_mode != 3) {
@@ -242,9 +241,6 @@ static int pcf8591_probe(struct i2c_client *client,
 exit_sysfs_remove:
        sysfs_remove_group(&client->dev.kobj, &pcf8591_attr_group_opt);
        sysfs_remove_group(&client->dev.kobj, &pcf8591_attr_group);
-exit_kfree:
-       kfree(data);
-exit:
        return err;
 }
 
@@ -255,7 +251,6 @@ static int pcf8591_remove(struct i2c_client *client)
        hwmon_device_unregister(data->hwmon_dev);
        sysfs_remove_group(&client->dev.kobj, &pcf8591_attr_group_opt);
        sysfs_remove_group(&client->dev.kobj, &pcf8591_attr_group);
-       kfree(i2c_get_clientdata(client));
        return 0;
 }