hwmon: (vt1211) Convert to use devm_ functions

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

Cc: Juerg Haefliger <juergh@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>

diff --git a/drivers/hwmon/vt1211.c b/drivers/hwmon/vt1211.c
index c2c5c72fb8f08aa2798d9783ea94df3bcfda20fc..f2c61153dba92bdbfd9276ed30f4592cfa2c5961 100644 (file)
--- a/drivers/hwmon/vt1211.c
+++ b/drivers/hwmon/vt1211.c
@@ -1148,19 +1148,18 @@ static int __devinit vt1211_probe(struct platform_device *pdev)
        struct resource *res;
        int i, err;
 
-       data = kzalloc(sizeof(struct vt1211_data), GFP_KERNEL);
+       data = devm_kzalloc(dev, sizeof(struct vt1211_data), GFP_KERNEL);
        if (!data) {
-               err = -ENOMEM;
                dev_err(dev, "Out of memory\n");
-               goto EXIT;
+               return -ENOMEM;
        }
 
        res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-       if (!request_region(res->start, resource_size(res), DRVNAME)) {
-               err = -EBUSY;
+       if (!devm_request_region(dev, res->start, resource_size(res),
+                                DRVNAME)) {
                dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
                        (unsigned long)res->start, (unsigned long)res->end);
-               goto EXIT_KFREE;
+               return -EBUSY;
        }
        data->addr = res->start;
        data->name = DRVNAME;
@@ -1215,26 +1214,15 @@ EXIT_DEV_REMOVE:
        dev_err(dev, "Sysfs interface creation failed (%d)\n", err);
 EXIT_DEV_REMOVE_SILENT:
        vt1211_remove_sysfs(pdev);
-       release_region(res->start, resource_size(res));
-EXIT_KFREE:
-       platform_set_drvdata(pdev, NULL);
-       kfree(data);
-EXIT:
        return err;
 }
 
 static int __devexit vt1211_remove(struct platform_device *pdev)
 {
        struct vt1211_data *data = platform_get_drvdata(pdev);
-       struct resource *res;
 
        hwmon_device_unregister(data->hwmon_dev);
        vt1211_remove_sysfs(pdev);
-       platform_set_drvdata(pdev, NULL);
-       kfree(data);
-
-       res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-       release_region(res->start, resource_size(res));
 
        return 0;
 }