+static ssize_t store_bit(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct thermal_data *data = i2c_get_clientdata(client);
+ struct sensor_device_attribute_2 *sda = to_sensor_dev_attr_2(attr);
+ unsigned long val;
+ int retval;
+
+ if (strict_strtoul(buf, 10, &val))
+ return -EINVAL;
+
+ mutex_lock(&data->mutex);
+ retval = i2c_smbus_read_byte_data(client, sda->nr);
+ if (retval < 0)
+ goto fail;
+
+ retval &= ~sda->index;
+ if (val)
+ retval |= sda->index;
+
+ retval = i2c_smbus_write_byte_data(client, sda->index, retval);
+ if (retval == 0)
+ retval = count;
+fail:
+ mutex_unlock(&data->mutex);
+ return retval;
+}
+