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-rw-r--r--drivers/hwmon/lm90.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 3edeebc0b835..6242e72a82c1 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -461,6 +461,8 @@ static ssize_t show_temphyst(struct device *dev, struct device_attribute *devatt
if (data->kind == adt7461)
temp = temp_from_u8_adt7461(data, data->temp8[attr->index]);
+ else if (data->kind == max6646)
+ temp = temp_from_u8(data->temp8[attr->index]);
else
temp = temp_from_s8(data->temp8[attr->index]);
@@ -473,12 +475,19 @@ static ssize_t set_temphyst(struct device *dev, struct device_attribute *dummy,
struct i2c_client *client = to_i2c_client(dev);
struct lm90_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
- long hyst;
+ int temp;
mutex_lock(&data->update_lock);
- hyst = temp_from_s8(data->temp8[2]) - val;
+ if (data->kind == adt7461)
+ temp = temp_from_u8_adt7461(data, data->temp8[2]);
+ else if (data->kind == max6646)
+ temp = temp_from_u8(data->temp8[2]);
+ else
+ temp = temp_from_s8(data->temp8[2]);
+
+ data->temp_hyst = hyst_to_reg(temp - val);
i2c_smbus_write_byte_data(client, LM90_REG_W_TCRIT_HYST,
- hyst_to_reg(hyst));
+ data->temp_hyst);
mutex_unlock(&data->update_lock);
return count;
}