* Does ACPI thermal driver support temperature under zero?
@ 2015-02-06 3:02 Hanjun Guo
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From: Hanjun Guo @ 2015-02-06 3:02 UTC (permalink / raw)
To: Zhang Rui; +Cc: linux-pm, sangyan
Hi,
My colleague was testing the system booting in temprature at -20 ℃,
then the system print "thermal_sys: Critical temperature reached (244 C),
shutting down", and the system shutdown as not expected.
The system is using avoton CPU and the kernel version is 3.4 stable, I
just find that in the latest of version of kernel, all the temperature variable
in thermal structure is unsigned, it seems that in thermal_get_temp()
in drivers/acpi/thermal.c, *temp will be a large value if temperature
under zero, did I miss something?
Any help or guidance will be appreciated a lot.
Thanks
Hanjun
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