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| author | Guenter Roeck <linux@roeck-us.net> | 2013-06-06 10:30:10 -0700 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2013-06-27 10:29:02 -0700 |
| commit | 68146a5712baeae2ba4885bd53d5d56bfd6024ba (patch) | |
| tree | 3e13a6df64f9147c72a1c3869d405796e482c4d9 | |
| parent | ed7c34e89d1e9d07f787a51571be0b96ae93d678 (diff) | |
| download | lwn-68146a5712baeae2ba4885bd53d5d56bfd6024ba.tar.gz lwn-68146a5712baeae2ba4885bd53d5d56bfd6024ba.zip | |
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>
| -rw-r--r-- | drivers/hwmon/adm1021.c | 32 |
1 files changed, 25 insertions, 7 deletions
diff --git a/drivers/hwmon/adm1021.c b/drivers/hwmon/adm1021.c index f920619cd6da..29dd9f746dfa 100644 --- a/drivers/hwmon/adm1021.c +++ b/drivers/hwmon/adm1021.c @@ -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; |