diff options
| author | Guenter Roeck | 2013-04-14 04:39:46 -0700 |
|---|---|---|
| committer | Guenter Roeck | 2013-04-21 08:27:28 -0700 |
| commit | 8eb6d90fec24244f80bba018d955413ea6117a34 (patch) | |
| tree | 3e6445966e8913bf43406feaf8a8efa5e4e9edbe /drivers/hwmon/tmp401.c | |
| parent | 14f2a6654dd42d60645071de26d17d0bced63a7d (diff) | |
hwmon: (tmp401) Reset valid flag when resetting temperature history
Cached data is no longer valid after resetting the temperature history.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/hwmon/tmp401.c')
| -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; } |