diff options
| -rw-r--r-- | drivers/hwmon/tmp401.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/hwmon/tmp401.c b/drivers/hwmon/tmp401.c index 4d306b29ba71..061146288e41 100644 --- a/drivers/hwmon/tmp401.c +++ b/drivers/hwmon/tmp401.c @@ -351,6 +351,8 @@ static ssize_t store_temp_crit_hyst(struct device *dev, struct device_attribute static ssize_t reset_temp_history(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { + struct i2c_client *client = to_i2c_client(dev); + struct tmp401_data *data = i2c_get_clientdata(client); long val; if (kstrtol(buf, 10, &val)) @@ -362,8 +364,10 @@ static ssize_t reset_temp_history(struct device *dev, val); return -EINVAL; } - i2c_smbus_write_byte_data(to_i2c_client(dev), - TMP401_TEMP_MSB_WRITE[5][0], val); + mutex_lock(&data->update_lock); + i2c_smbus_write_byte_data(client, TMP401_TEMP_MSB_WRITE[5][0], val); + data->valid = 0; + mutex_unlock(&data->update_lock); return count; } |