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authorGuenter Roeck <linux@roeck-us.net>2013-06-06 21:30:10 +0400
committerGuenter Roeck <linux@roeck-us.net>2013-06-27 21:29:02 +0400
commit68146a5712baeae2ba4885bd53d5d56bfd6024ba (patch)
tree3e13a6df64f9147c72a1c3869d405796e482c4d9 /drivers/hwmon
parented7c34e89d1e9d07f787a51571be0b96ae93d678 (diff)
downloadlinux-68146a5712baeae2ba4885bd53d5d56bfd6024ba.tar.xz
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>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/adm1021.c32
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;