diff options
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/adt7470.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c index 94550d79ca48..dbd758be1924 100644 --- a/drivers/hwmon/adt7470.c +++ b/drivers/hwmon/adt7470.c @@ -545,6 +545,28 @@ static ssize_t show_alarm_mask(struct device *dev, return sprintf(buf, "%x\n", data->alarms_mask); } +static ssize_t set_alarm_mask(struct device *dev, + struct device_attribute *devattr, + const char *buf, + size_t count) +{ + struct adt7470_data *data = dev_get_drvdata(dev); + long mask; + + if (kstrtoul(buf, 0, &mask)) + return -EINVAL; + + if (mask & ~0xffff) + return -EINVAL; + + mutex_lock(&data->lock); + data->alarms_mask = mask; + adt7470_write_word_data(data->client, ADT7470_REG_ALARM1_MASK, mask); + mutex_unlock(&data->lock); + + return count; +} + static ssize_t show_fan_max(struct device *dev, struct device_attribute *devattr, char *buf) @@ -989,7 +1011,8 @@ static ssize_t show_alarm(struct device *dev, return sprintf(buf, "0\n"); } -static DEVICE_ATTR(alarm_mask, S_IRUGO, show_alarm_mask, NULL); +static DEVICE_ATTR(alarm_mask, S_IWUSR | S_IRUGO, show_alarm_mask, + set_alarm_mask); static DEVICE_ATTR(num_temp_sensors, S_IWUSR | S_IRUGO, show_num_temp_sensors, set_num_temp_sensors); static DEVICE_ATTR(auto_update_interval, S_IWUSR | S_IRUGO, |