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hwmon: (adm1021) Do not create min sysfs attributes for LM84 

LM84 does not support minimum temperature registers.
Only create the respective sysfs attributes for other chips.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck 2013-06-06 10:30:10 -07:00
parent ed7c34e89d
commit 68146a5712
1 changed files with 25 additions and 7 deletions
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32
drivers/hwmon/adm1021.c
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@ -284,15 +284,11 @@ static DEVICE_ATTR(low_power, S_IWUSR | S_IRUGO, show_low_power, set_low_power);
static struct attribute *adm1021_attributes[] = {
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp1_min.dev_attr.attr,
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp2_max.dev_attr.attr,
&sensor_dev_attr_temp2_min.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
&sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
&sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
&sensor_dev_attr_temp2_fault.dev_attr.attr,
&dev_attr_alarms.attr,
&dev_attr_low_power.attr,
@ -303,6 +299,18 @@ static const struct attribute_group adm1021_group = {
.attrs = adm1021_attributes,
};
static struct attribute *adm1021_min_attributes[] = {
&sensor_dev_attr_temp1_min.dev_attr.attr,
&sensor_dev_attr_temp2_min.dev_attr.attr,
&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
&sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
NULL
};
static const struct attribute_group adm1021_min_group = {
.attrs = adm1021_min_attributes,
};
/* Return 0 if detection is successful, -ENODEV otherwise */
static int adm1021_detect(struct i2c_client *client,
struct i2c_board_info *info)
@ -425,6 +433,12 @@ static int adm1021_probe(struct i2c_client *client,
if (err)
return err;
if (data->type != lm84) {
err = sysfs_create_group(&client->dev.kobj, &adm1021_min_group);
if (err)
goto error;
}
data->hwmon_dev = hwmon_device_register(&client->dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
@ -434,6 +448,7 @@ static int adm1021_probe(struct i2c_client *client,
return 0;
error:
sysfs_remove_group(&client->dev.kobj, &adm1021_min_group);
sysfs_remove_group(&client->dev.kobj, &adm1021_group);
return err;
}
@ -452,6 +467,7 @@ static int adm1021_remove(struct i2c_client *client)
struct adm1021_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &adm1021_min_group);
sysfs_remove_group(&client->dev.kobj, &adm1021_group);
return 0;
@ -477,9 +493,11 @@ static struct adm1021_data *adm1021_update_device(struct device *dev)
data->temp_max[i] = 1000 *
(s8) i2c_smbus_read_byte_data(
client, ADM1021_REG_TOS_R(i));
data->temp_min[i] = 1000 *
(s8) i2c_smbus_read_byte_data(
client, ADM1021_REG_THYST_R(i));
if (data->type != lm84) {
data->temp_min[i] = 1000 *
(s8) i2c_smbus_read_byte_data(client,
ADM1021_REG_THYST_R(i));
}
}
data->alarms = i2c_smbus_read_byte_data(client,
ADM1021_REG_STATUS) & 0x7c;