hwmon: (wm831x-hwmon) Convert to use devm_ functions

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

Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/hwmon/wm831x-hwmon.c b/drivers/hwmon/wm831x-hwmon.c
index 07cb25ae69be9cad35c11de0bd716d2f77a46395..d0db1f2738fb39d0d4c76cd3b140f9aa7e2211ac 100644 (file)
--- a/drivers/hwmon/wm831x-hwmon.c
+++ b/drivers/hwmon/wm831x-hwmon.c
@@ -163,7 +163,8 @@ static int __devinit wm831x_hwmon_probe(struct platform_device *pdev)
        struct wm831x_hwmon *hwmon;
        int ret;
 
-       hwmon = kzalloc(sizeof(struct wm831x_hwmon), GFP_KERNEL);
+       hwmon = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_hwmon),
+                            GFP_KERNEL);
        if (!hwmon)
                return -ENOMEM;
 
@@ -171,7 +172,7 @@ static int __devinit wm831x_hwmon_probe(struct platform_device *pdev)
 
        ret = sysfs_create_group(&pdev->dev.kobj, &wm831x_attr_group);
        if (ret)
-               goto err;
+               return ret;
 
        hwmon->classdev = hwmon_device_register(&pdev->dev);
        if (IS_ERR(hwmon->classdev)) {
@@ -185,8 +186,6 @@ static int __devinit wm831x_hwmon_probe(struct platform_device *pdev)
 
 err_sysfs:
        sysfs_remove_group(&pdev->dev.kobj, &wm831x_attr_group);
-err:
-       kfree(hwmon);
        return ret;
 }
 
@@ -196,8 +195,6 @@ static int __devexit wm831x_hwmon_remove(struct platform_device *pdev)
 
        hwmon_device_unregister(hwmon->classdev);
        sysfs_remove_group(&pdev->dev.kobj, &wm831x_attr_group);
-       platform_set_drvdata(pdev, NULL);
-       kfree(hwmon);
 
        return 0;
 }