Hi Rui, I am testing your generic thermal zone driver on my old Sony laptop (Vaio PCG-GR214EP) and I have noticed that the temperature reported by the generic thermal zone interface (/sys/class/thermal/thermal_zone0/temp) isn't updated. The reported value is always the same, until I read from /proc/acpi/thermal_zone/ATF0/temperature. After that the value in /sys/class/thermal/thermal_zone0/temp matches the one reported in /proc/acpi/thermal_zone/ATF0/temperature, but doesn't change again until the next access to /proc/acpi/thermal_zone/ATF0/temperature. This is with polling disabled on the ACPI thermal zone (the default on my system). If I set polling to 2 seconds, then reading from /sys/class/thermal/thermal_zone0/temp shows changing values as expected. So it seems to me that reading from /proc/acpi/thermal_zone/ATF0/temperature updates the temperature value when polling is disabled, while reading from /sys/class/thermal/thermal_zone0/temp only returns a cached value. Is it correct? I think that the generic thermal driver should be fixed to update the temperature values properly. Thanks, -- Jean Delvare
