hwmon: (lm77) Do not preserve hysteresis when updating critical temp limit

[firefly-linux-kernel-4.4.55.git] / drivers / hwmon / lm77.c

diff --git a/drivers/hwmon/lm77.c b/drivers/hwmon/lm77.c
index 4cd8a513c47be7c3582512e55eaf8d2dc5d4a1a2..85e5b3355be42c5b93c1222f2b1611a00ec16680 100644 (file)
--- a/drivers/hwmon/lm77.c
+++ b/drivers/hwmon/lm77.c
@@ -216,13 +216,11 @@ static ssize_t set_temp_crit_hyst(struct device *dev,
        return count;
 }
 
-/* preserve hysteresis when setting T_crit */
 static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr,
                             const char *buf, size_t count)
 {
        struct i2c_client *client = to_i2c_client(dev);
        struct lm77_data *data = i2c_get_clientdata(client);
-       int oldcrithyst;
        unsigned long val;
        int err;
 
@@ -231,13 +229,9 @@ static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr,
                return err;
 
        mutex_lock(&data->update_lock);
-       oldcrithyst = data->temp_crit - data->temp_hyst;
        data->temp_crit = val;
-       data->temp_hyst = data->temp_crit - oldcrithyst;
        lm77_write_value(client, LM77_REG_TEMP_CRIT,
                         LM77_TEMP_TO_REG(data->temp_crit));
-       lm77_write_value(client, LM77_REG_TEMP_HYST,
-                        LM77_TEMP_TO_REG(data->temp_hyst));
        mutex_unlock(&data->update_lock);
        return count;
 }