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Commit 3710263f authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (lm73) Convert to use devm_hwmon_device_register_with_groups 



Also introduce new variable dev pointing to client->dev in the probe
function, and use new macro ATTRIBUTE_GROUPS to declare attribute groups.

Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 9bd024e9

drivers/hwmon/lm73.c

+22 −48
Original line number Diff line number Diff line
@@ -55,7 +55,7 @@ static const unsigned short lm73_convrates[] = { 
};



struct lm73_data {

	struct device *hwmon_dev;

	struct i2c_client *client;

	struct mutex lock;

	u8 ctrl;			/* control register value */

};
@@ -66,7 +66,7 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da, 
			const char *buf, size_t count)

{

	struct sensor_device_attribute *attr = to_sensor_dev_attr(da);

	struct i2c_client *client = to_i2c_client(dev);

	struct lm73_data *data = dev_get_drvdata(dev);

	long temp;

	short value;

	s32 err;
@@ -77,7 +77,7 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da, 


	/* Write value */

	value = clamp_val(temp / 250, LM73_TEMP_MIN, LM73_TEMP_MAX) << 5;

	err = i2c_smbus_write_word_swapped(client, attr->index, value);

	err = i2c_smbus_write_word_swapped(data->client, attr->index, value);

	return (err < 0) ? err : count;

}
@@ -85,10 +85,10 @@ static ssize_t show_temp(struct device *dev, struct device_attribute *da, 
			 char *buf)

{

	struct sensor_device_attribute *attr = to_sensor_dev_attr(da);

	struct i2c_client *client = to_i2c_client(dev);

	struct lm73_data *data = dev_get_drvdata(dev);

	int temp;



	s32 err = i2c_smbus_read_word_swapped(client, attr->index);

	s32 err = i2c_smbus_read_word_swapped(data->client, attr->index);

	if (err < 0)

		return err;
@@ -101,8 +101,7 @@ static ssize_t show_temp(struct device *dev, struct device_attribute *da, 
static ssize_t set_convrate(struct device *dev, struct device_attribute *da,

			    const char *buf, size_t count)

{

	struct i2c_client *client = to_i2c_client(dev);

	struct lm73_data *data = i2c_get_clientdata(client);

	struct lm73_data *data = dev_get_drvdata(dev);

	unsigned long convrate;

	s32 err;

	int res = 0;
@@ -124,7 +123,8 @@ static ssize_t set_convrate(struct device *dev, struct device_attribute *da, 
	mutex_lock(&data->lock);

	data->ctrl &= LM73_CTRL_TO_MASK;

	data->ctrl |= res << LM73_CTRL_RES_SHIFT;

	err = i2c_smbus_write_byte_data(client, LM73_REG_CTRL, data->ctrl);

	err = i2c_smbus_write_byte_data(data->client, LM73_REG_CTRL,

					data->ctrl);

	mutex_unlock(&data->lock);



	if (err < 0)
@@ -136,8 +136,7 @@ static ssize_t set_convrate(struct device *dev, struct device_attribute *da, 
static ssize_t show_convrate(struct device *dev, struct device_attribute *da,

			     char *buf)

{

	struct i2c_client *client = to_i2c_client(dev);

	struct lm73_data *data = i2c_get_clientdata(client);

	struct lm73_data *data = dev_get_drvdata(dev);

	int res;



	res = (data->ctrl & LM73_CTRL_RES_MASK) >> LM73_CTRL_RES_SHIFT;
@@ -147,13 +146,12 @@ static ssize_t show_convrate(struct device *dev, struct device_attribute *da, 
static ssize_t show_maxmin_alarm(struct device *dev,

				 struct device_attribute *da, char *buf)

{

	struct i2c_client *client = to_i2c_client(dev);

	struct sensor_device_attribute *attr = to_sensor_dev_attr(da);

	struct lm73_data *data = i2c_get_clientdata(client);

	struct lm73_data *data = dev_get_drvdata(dev);

	s32 ctrl;



	mutex_lock(&data->lock);

	ctrl = i2c_smbus_read_byte_data(client, LM73_REG_CTRL);

	ctrl = i2c_smbus_read_byte_data(data->client, LM73_REG_CTRL);

	if (ctrl < 0)

		goto abort;

	data->ctrl = ctrl;
@@ -183,7 +181,7 @@ static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, 
static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO,

			show_maxmin_alarm, NULL, LM73_CTRL_LO_SHIFT);



static struct attribute *lm73_attributes[] = {

static struct attribute *lm73_attrs[] = {

	&sensor_dev_attr_temp1_input.dev_attr.attr,

	&sensor_dev_attr_temp1_max.dev_attr.attr,

	&sensor_dev_attr_temp1_min.dev_attr.attr,
@@ -192,10 +190,7 @@ static struct attribute *lm73_attributes[] = { 
	&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,

	NULL

};



static const struct attribute_group lm73_group = {

	.attrs = lm73_attributes,

};

ATTRIBUTE_GROUPS(lm73);



/*-----------------------------------------------------------------------*/
@@ -204,16 +199,16 @@ static const struct attribute_group lm73_group = { 
static int

lm73_probe(struct i2c_client *client, const struct i2c_device_id *id)

{

	int status;

	struct device *dev = &client->dev;

	struct device *hwmon_dev;

	struct lm73_data *data;

	int ctrl;



	data = devm_kzalloc(&client->dev, sizeof(struct lm73_data),

			    GFP_KERNEL);

	data = devm_kzalloc(dev, sizeof(struct lm73_data), GFP_KERNEL);

	if (!data)

		return -ENOMEM;



	i2c_set_clientdata(client, data);

	data->client = client;

	mutex_init(&data->lock);



	ctrl = i2c_smbus_read_byte_data(client, LM73_REG_CTRL);
@@ -221,33 +216,13 @@ lm73_probe(struct i2c_client *client, const struct i2c_device_id *id) 
		return ctrl;

	data->ctrl = ctrl;



	/* Register sysfs hooks */

	status = sysfs_create_group(&client->dev.kobj, &lm73_group);

	if (status)

		return status;



	data->hwmon_dev = hwmon_device_register(&client->dev);

	if (IS_ERR(data->hwmon_dev)) {

		status = PTR_ERR(data->hwmon_dev);

		goto exit_remove;

	}

	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,

							   data, lm73_groups);

	if (IS_ERR(hwmon_dev))

		return PTR_ERR(hwmon_dev);



	dev_info(&client->dev, "%s: sensor '%s'\n",

		 dev_name(data->hwmon_dev), client->name);



	return 0;



exit_remove:

	sysfs_remove_group(&client->dev.kobj, &lm73_group);

	return status;

}



static int lm73_remove(struct i2c_client *client)

{

	struct lm73_data *data = i2c_get_clientdata(client);

	dev_info(dev, "sensor '%s'\n", client->name);



	hwmon_device_unregister(data->hwmon_dev);

	sysfs_remove_group(&client->dev.kobj, &lm73_group);

	return 0;

}
@@ -300,7 +275,6 @@ static struct i2c_driver lm73_driver = { 
		.name	= "lm73",

	},

	.probe		= lm73_probe,

	.remove		= lm73_remove,

	.id_table	= lm73_ids,

	.detect		= lm73_detect,

	.address_list	= normal_i2c,