> > * Drivers must not share region information. E.g. you must not give the
> >   DAC driver access to the memory control region claimed by the chipset
> >   driver except through the DacOut() functions. If you have to access
> >   indexed registers, declare a 'static inline' function in the 
> >   ramdac/clock driver.
>       
>       Ok, so the chipset driver defines a common DAC function that uses
>       the pcibase control region, and the clock and ramdac each decalre
>       an EDAC access that calls the shared DAC helper?

Correct. 

                        Steffen

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