From: Jean Delvare <[EMAIL PROTECTED]> Fix a bug where setting the low fan speed limits will not work if no data was ever read through the sysfs interface and the fan clock dividers have not been explicitely set yet either. The reason is that data->fan_div[nr] may currently be used before it is initialized from the chip register values. The fix is to explicitely initialize data->fan_div[nr] before using it.
Bug reported, and fix tested, by Nicolas Mailhot. Signed-off-by: Jean Delvare <[EMAIL PROTECTED]> Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]> --- drivers/hwmon/it87.c | 7 +++++++ 1 file changed, 7 insertions(+) --- usb-2.6.orig/drivers/hwmon/it87.c +++ usb-2.6/drivers/hwmon/it87.c @@ -522,8 +522,15 @@ static ssize_t set_fan_min(struct device struct i2c_client *client = to_i2c_client(dev); struct it87_data *data = i2c_get_clientdata(client); int val = simple_strtol(buf, NULL, 10); + u8 reg = it87_read_value(client, IT87_REG_FAN_DIV); down(&data->update_lock); + switch (nr) { + case 0: data->fan_div[nr] = reg & 0x07; break; + case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break; + case 2: data->fan_div[nr] = (reg & 0x40) ? 3 : 1; break; + } + data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); up(&data->update_lock); -- ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel