hwmon: (vt8231) Convert to use devm_ functions

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

Cc: Roger Lucas <vt8231@hiddenengine.co.uk>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/vt8231.c b/drivers/hwmon/vt8231.c
index 386a845380107f3e8e7e43093764e7a92bc45634..84e3dc5e3a831b0748f02e5a54229a665040594b 100644 (file)
--- a/drivers/hwmon/vt8231.c
+++ b/drivers/hwmon/vt8231.c
@@ -789,18 +789,16 @@ static int vt8231_probe(struct platform_device *pdev)
 
        /* Reserve the ISA region */
        res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-       if (!request_region(res->start, VT8231_EXTENT,
-                           vt8231_driver.driver.name)) {
+       if (!devm_request_region(&pdev->dev, res->start, VT8231_EXTENT,
+                                vt8231_driver.driver.name)) {
                dev_err(&pdev->dev, "Region 0x%lx-0x%lx already in use!\n",
                        (unsigned long)res->start, (unsigned long)res->end);
                return -ENODEV;
        }
 
-       data = kzalloc(sizeof(struct vt8231_data), GFP_KERNEL);
-       if (!data) {
-               err = -ENOMEM;
-               goto exit_release;
-       }
+       data = devm_kzalloc(&pdev->dev, sizeof(struct vt8231_data), GFP_KERNEL);
+       if (!data)
+               return -ENOMEM;
 
        platform_set_drvdata(pdev, data);
        data->addr = res->start;
@@ -812,7 +810,7 @@ static int vt8231_probe(struct platform_device *pdev)
        /* Register sysfs hooks */
        err = sysfs_create_group(&pdev->dev.kobj, &vt8231_group);
        if (err)
-               goto exit_free;
+               return err;
 
        /* Must update device information to find out the config field */
        data->uch_config = vt8231_read_value(data, VT8231_REG_UCH_CONFIG);
@@ -850,13 +848,6 @@ exit_remove_files:
                sysfs_remove_group(&pdev->dev.kobj, &vt8231_group_temps[i]);
 
        sysfs_remove_group(&pdev->dev.kobj, &vt8231_group);
-
-exit_free:
-       platform_set_drvdata(pdev, NULL);
-       kfree(data);
-
-exit_release:
-       release_region(res->start, VT8231_EXTENT);
        return err;
 }
 
@@ -875,9 +866,6 @@ static int __devexit vt8231_remove(struct platform_device *pdev)
 
        sysfs_remove_group(&pdev->dev.kobj, &vt8231_group);
 
-       release_region(data->addr, VT8231_EXTENT);
-       platform_set_drvdata(pdev, NULL);
-       kfree(data);
        return 0;
 }