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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Cached data is no longer valid after resetting the temperature history.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>
hifive-unleashed-5.1
Guenter Roeck 2013-04-14 04:39:46 -07:00
parent 14f2a6654d
commit 8eb6d90fec
1 changed files with 6 additions and 2 deletions
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8
drivers/hwmon/tmp401.c
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@ -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;
}