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Commit 8ab4ec3e authored by Jean Delvare's avatar Jean Delvare Committed by Greg Kroah-Hartman
Browse files

it87: Cleanup set_fan_div 



it87: Cleanup set_fan_div

We only change one fan clock divider at a time, so there is only one
fan min which needs to be saved and restored.

Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 3543a53f

drivers/hwmon/it87.c

+7 −7
Original line number Diff line number Diff line
@@ -564,14 +564,14 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, 
	struct i2c_client *client = to_i2c_client(dev);

	struct it87_data *data = i2c_get_clientdata(client);

	unsigned long val = simple_strtoul(buf, NULL, 10);

	int i, min[3];

	int min;

	u8 old;



	mutex_lock(&data->update_lock);

	old = it87_read_value(client, IT87_REG_FAN_DIV);



	for (i = 0; i < 3; i++)

		min[i] = FAN_FROM_REG(data->fan_min[i], DIV_FROM_REG(data->fan_div[i]));

	/* Save fan min limit */

	min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));



	switch (nr) {

	case 0:
@@ -591,10 +591,10 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, 
		val |= 0x1 << 6;

	it87_write_value(client, IT87_REG_FAN_DIV, val);



	for (i = 0; i < 3; i++) {

		data->fan_min[i]=FAN_TO_REG(min[i], DIV_FROM_REG(data->fan_div[i]));

		it87_write_value(client, IT87_REG_FAN_MIN(i), data->fan_min[i]);

	}

	/* Restore fan min limit */

	data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));

	it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]);



	mutex_unlock(&data->update_lock);

	return count;

}