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hwmon: (ftsteutates) Fix clearing alarm sysfs entries

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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 <[email protected]>
[groeck: Clean up documentation change and description]
Signed-off-by: Guenter Roeck <[email protected]>
This commit is contained in:
Thilo Cestonaro 2017-08-03 11:43:51 +02:00 • committed by Guenter Roeck
commit 7576750f03
2 changed files with 6 additions and 0 deletions
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4
Documentation/hwmon/ftsteutates
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@ -18,6 +18,10 @@ enhancements. It can monitor up to 4 voltages, 16 temperatures and
8 fans. It also contains an integrated watchdog which is currently
implemented in this driver.
To clear a temperature or fan alarm, execute the following command with the
correct path to the alarm file:
echo 0 >XXXX_alarm
Specification of the chip can be found here:
ftp://ftp.ts.fujitsu.com/pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/BMC-Teutates_Specification_V1.21.pdf
ftp://ftp.ts.fujitsu.com/pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/Fujitsu_mainboards-1-Sensors_HowTo-en-US.pdf