hwmon: (sht21) Convert to use devm_ functions

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

Cc: Jonathan Cameron <jic23@cam.ac.uk>
Cc: Urs Fleisch <urs.fleisch@sensirion.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/sht21.c b/drivers/hwmon/sht21.c
index 6c2dede..c2565d0 100644 (file)
--- a/drivers/hwmon/sht21.c
+++ b/drivers/hwmon/sht21.c
@@ -199,11 +199,10 @@ static int __devinit sht21_probe(struct i2c_client *client,
                return -ENODEV;
        }
 
-       sht21 = kzalloc(sizeof(*sht21), GFP_KERNEL);
-       if (!sht21) {
-               dev_dbg(&client->dev, "kzalloc failed\n");
+       sht21 = devm_kzalloc(&client->dev, sizeof(*sht21), GFP_KERNEL);
+       if (!sht21)
                return -ENOMEM;
-       }
+
        i2c_set_clientdata(client, sht21);
 
        mutex_init(&sht21->lock);
@@ -211,7 +210,7 @@ static int __devinit sht21_probe(struct i2c_client *client,
        err = sysfs_create_group(&client->dev.kobj, &sht21_attr_group);
        if (err) {
                dev_dbg(&client->dev, "could not create sysfs files\n");
-               goto fail_free;
+               return err;
        }
        sht21->hwmon_dev = hwmon_device_register(&client->dev);
        if (IS_ERR(sht21->hwmon_dev)) {
@@ -226,9 +225,6 @@ static int __devinit sht21_probe(struct i2c_client *client,
 
 fail_remove_sysfs:
        sysfs_remove_group(&client->dev.kobj, &sht21_attr_group);
-fail_free:
-       kfree(sht21);
-
        return err;
 }
 
@@ -242,7 +238,6 @@ static int __devexit sht21_remove(struct i2c_client *client)
 
        hwmon_device_unregister(sht21->hwmon_dev);
        sysfs_remove_group(&client->dev.kobj, &sht21_attr_group);
-       kfree(sht21);
 
        return 0;
 }