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>

1 files changed, 4 insertions, 9 deletions

diff --git a/drivers/hwmon/sht21.c b/drivers/hwmon/sht21.c
index 6c2dede4b8e..c2565d04cd4 100644
--- 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;
 }