How to know what is causing many GPE03 interrupts ?

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Dear ACPI team,
One of our customer gets a very high CPU usage because of many interrupts
reported on /sys/firmware/acpi/interrupts/gpe03
I've dumped the ACPI and disassembled the ACPI tables but I'm unable to
find something obviously related to gpe03 in these tables.
I'had a look to drivers/acpi/sysfs.c and related kernel sources files in
the hope to understand any possible link between gpe03 and some ACPI
definition but at the end I'm lost in space.
Could you give me some tips or point me to some helpful document to point
me to the faulty hardware pin or device ?
Thanks very much for help
Gilles Buloz
Kontron Modular Computers





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