> This is not information which should be reported through a gpio driver. > Besides, the functions don't exist at this point in the series, > and there should be no extern declarations in source files. > If you want to model fan or psu information through gpio, drop > the hwmon drivers and implement reading the status here, then use > the existing gpio-fan hwmon driver to report it in the hwmon subsystem. Thank you for the feedback Guenter, I see how it is possible to use gpio-fan for the fan. As for the gxp-psu Hwmon driver can I model the gpio-fan driver to get the necessary gpio information for power supplies? -Nick Hawkins