hwmon: (ftsteutates) Fix clearing alarm sysfs entries
sysfs store functions should return the number of bytes written.
Returning zero results in an endless loop.
Fixes: 08426eda58
("hwmon: Add driver for FTS BMC chip "Teutates"")
Signed-off-by: Thilo Cestonaro <thilo.cestonaro@ts.fujitsu.com>
[groeck: Clean up documentation change and description]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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@ -18,6 +18,10 @@ enhancements. It can monitor up to 4 voltages, 16 temperatures and
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8 fans. It also contains an integrated watchdog which is currently
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implemented in this driver.
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To clear a temperature or fan alarm, execute the following command with the
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correct path to the alarm file:
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echo 0 >XXXX_alarm
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Specification of the chip can be found here:
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ftp://ftp.ts.fujitsu.com/pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/BMC-Teutates_Specification_V1.21.pdf
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ftp://ftp.ts.fujitsu.com/pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/Fujitsu_mainboards-1-Sensors_HowTo-en-US.pdf
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@ -435,6 +435,7 @@ clear_temp_alarm(struct device *dev, struct device_attribute *devattr,
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goto error;
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data->valid = false;
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ret = count;
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error:
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mutex_unlock(&data->update_lock);
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return ret;
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@ -508,6 +509,7 @@ clear_fan_alarm(struct device *dev, struct device_attribute *devattr,
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goto error;
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data->valid = false;
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ret = count;
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error:
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mutex_unlock(&data->update_lock);
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return ret;
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