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hwmon: (lm78) Convert to use devm_ functions 

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

Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck 2012-06-02 09:58:09 -07:00
parent e3ecb2eeed
commit 7b7bb90ca3
1 changed files with 11 additions and 25 deletions
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36
drivers/hwmon/lm78.c
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@ -660,7 +660,7 @@ static int lm78_i2c_probe(struct i2c_client *client,
struct lm78_data *data;
int err;
data = kzalloc(sizeof(struct lm78_data), GFP_KERNEL);
data = devm_kzalloc(&client->dev, sizeof(struct lm78_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
@ -674,20 +674,18 @@ static int lm78_i2c_probe(struct i2c_client *client,
/* Register sysfs hooks */
err = sysfs_create_group(&client->dev.kobj, &lm78_group);
if (err)
goto ERROR3;
return err;
data->hwmon_dev = hwmon_device_register(&client->dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
goto ERROR4;
goto error;
}
return 0;
ERROR4:
error:
sysfs_remove_group(&client->dev.kobj, &lm78_group);
ERROR3:
kfree(data);
return err;
}
@ -697,7 +695,6 @@ static int lm78_i2c_remove(struct i2c_client *client)
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &lm78_group);
kfree(data);
return 0;
}
@ -844,16 +841,14 @@ static int __devinit lm78_isa_probe(struct platform_device *pdev)
/* Reserve the ISA region */
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (!request_region(res->start + LM78_ADDR_REG_OFFSET, 2, "lm78")) {
err = -EBUSY;
goto exit;
}
if (!devm_request_region(&pdev->dev, res->start + LM78_ADDR_REG_OFFSET,
2, "lm78"))
return -EBUSY;
data = devm_kzalloc(&pdev->dev, sizeof(struct lm78_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
data = kzalloc(sizeof(struct lm78_data), GFP_KERNEL);
if (!data) {
err = -ENOMEM;
goto exit_release_region;
}
mutex_init(&data->lock);
data->isa_addr = res->start;
platform_set_drvdata(pdev, data);
@ -888,25 +883,16 @@ static int __devinit lm78_isa_probe(struct platform_device *pdev)
exit_remove_files:
sysfs_remove_group(&pdev->dev.kobj, &lm78_group);
device_remove_file(&pdev->dev, &dev_attr_name);
kfree(data);
exit_release_region:
release_region(res->start + LM78_ADDR_REG_OFFSET, 2);
exit:
return err;
}
static int __devexit lm78_isa_remove(struct platform_device *pdev)
{
struct lm78_data *data = platform_get_drvdata(pdev);
struct resource *res;
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&pdev->dev.kobj, &lm78_group);
device_remove_file(&pdev->dev, &dev_attr_name);
kfree(data);
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
release_region(res->start + LM78_ADDR_REG_OFFSET, 2);
return 0;
}