Hi Frank, all,

> > Which bus driver are you using? It obviously lacks class declaration,
> > so the correct fix is to add the class there.
>
> The modules that are loading are (in reverse order):
>      adm1031
>      ad5321
>      mic184
>      pca9540
>      i2c_sensor
>      i2c_elektor
>      i2c_algo_pcf
>      i2c_core
>
> So I believe what you are asking for is the i2c_elektor driver for the
> PCF8584 ISA to I2C chip.

Correct, I just checked and this one actually lacks its class. Patch
follows.

This patch adds a class definition to the elektor i2c bus driver.
Without this definition, hardware monitoring chips located on such
busses cannot possibly be driven.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>