hwmon: (smsc47b397) Convert to use devm_ functions
Convert to use devm_ functions to reduce code size and simplify the code.
Cc: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/hwmon/smsc47b397.c b/drivers/hwmon/smsc47b397.c
index c5f6be4..65b07de 100644
--- a/drivers/hwmon/smsc47b397.c
+++ b/drivers/hwmon/smsc47b397.c
@@ -231,13 +231,9 @@
static int __devexit smsc47b397_remove(struct platform_device *pdev)
{
struct smsc47b397_data *data = platform_get_drvdata(pdev);
- struct resource *res;
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&pdev->dev.kobj, &smsc47b397_group);
- res = platform_get_resource(pdev, IORESOURCE_IO, 0);
- release_region(res->start, SMSC_EXTENT);
- kfree(data);
return 0;
}
@@ -261,19 +257,17 @@
int err = 0;
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
- if (!request_region(res->start, SMSC_EXTENT,
- smsc47b397_driver.driver.name)) {
+ if (!devm_request_region(dev, res->start, SMSC_EXTENT,
+ smsc47b397_driver.driver.name)) {
dev_err(dev, "Region 0x%lx-0x%lx already in use!\n",
(unsigned long)res->start,
(unsigned long)res->start + SMSC_EXTENT - 1);
return -EBUSY;
}
- data = kzalloc(sizeof(struct smsc47b397_data), GFP_KERNEL);
- if (!data) {
- err = -ENOMEM;
- goto error_release;
- }
+ data = devm_kzalloc(dev, sizeof(struct smsc47b397_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
data->addr = res->start;
data->name = "smsc47b397";
@@ -283,7 +277,7 @@
err = sysfs_create_group(&dev->kobj, &smsc47b397_group);
if (err)
- goto error_free;
+ return err;
data->hwmon_dev = hwmon_device_register(dev);
if (IS_ERR(data->hwmon_dev)) {
@@ -295,10 +289,6 @@
error_remove:
sysfs_remove_group(&dev->kobj, &smsc47b397_group);
-error_free:
- kfree(data);
-error_release:
- release_region(res->start, SMSC_EXTENT);
return err;
}