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hwmon: (ad7314) Convert to devm_hwmon_device_register_with_groups 

Use ATTRIBUTE_GROUPS macro and devm_hwmon_device_register_with_groups() to
simplify the code a bit.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Axel Lin 2014-07-01 22:29:28 +08:00 committed by Guenter Roeck
parent 165720d9ff
commit 157926c013
1 changed files with 7 additions and 41 deletions
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48
drivers/hwmon/ad7314.c
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@ -37,7 +37,6 @@ enum ad7314_variant {
struct ad7314_data {
struct spi_device *spi_dev;
struct device *hwmon_dev;
u16 rx ____cacheline_aligned;
};
@ -88,62 +87,30 @@ static ssize_t ad7314_show_temperature(struct device *dev,
}
}
static ssize_t ad7314_show_name(struct device *dev,
struct device_attribute *devattr, char *buf)
{
return sprintf(buf, "%s\n", to_spi_device(dev)->modalias);
}
static DEVICE_ATTR(name, S_IRUGO, ad7314_show_name, NULL);
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO,
ad7314_show_temperature, NULL, 0);
static struct attribute *ad7314_attributes[] = {
&dev_attr_name.attr,
static struct attribute *ad7314_attrs[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
NULL,
};
static const struct attribute_group ad7314_group = {
.attrs = ad7314_attributes,
};
ATTRIBUTE_GROUPS(ad7314);
static int ad7314_probe(struct spi_device *spi_dev)
{
int ret;
struct ad7314_data *chip;
struct device *hwmon_dev;
chip = devm_kzalloc(&spi_dev->dev, sizeof(*chip), GFP_KERNEL);
if (chip == NULL)
return -ENOMEM;
spi_set_drvdata(spi_dev, chip);
ret = sysfs_create_group(&spi_dev->dev.kobj, &ad7314_group);
if (ret < 0)
return ret;
chip->hwmon_dev = hwmon_device_register(&spi_dev->dev);
if (IS_ERR(chip->hwmon_dev)) {
ret = PTR_ERR(chip->hwmon_dev);
goto error_remove_group;
}
chip->spi_dev = spi_dev;
return 0;
error_remove_group:
sysfs_remove_group(&spi_dev->dev.kobj, &ad7314_group);
return ret;
}
static int ad7314_remove(struct spi_device *spi_dev)
{
struct ad7314_data *chip = spi_get_drvdata(spi_dev);
hwmon_device_unregister(chip->hwmon_dev);
sysfs_remove_group(&spi_dev->dev.kobj, &ad7314_group);
return 0;
hwmon_dev = devm_hwmon_device_register_with_groups(&spi_dev->dev,
spi_dev->modalias,
chip, ad7314_groups);
return PTR_ERR_OR_ZERO(hwmon_dev);
}
static const struct spi_device_id ad7314_id[] = {
@ -159,7 +126,6 @@ static struct spi_driver ad7314_driver = {
.name = "ad7314",
},
.probe = ad7314_probe,
.remove = ad7314_remove,
.id_table = ad7314_id,
};