Re: 2.6.16 backtrace at boot (Ibook G4) (related to "PowerBook5,4	-- no sound?")
>   arch/powerpc/platforms/powermac/setup.c:721: error: 'mach_powermac' undeclared here (not in a function)
>   arch/powerpc/platforms/powermac/setup.c:721: warning: type defaults to 'int' in declaration of 'mach_powermac'
>   make[2]: *** [arch/powerpc/platforms/powermac/setup.o] Error 1
>   make[1]: *** [arch/powerpc/platforms/powermac] Error 2
>   make: *** [arch/powerpc/platforms] Error 2
> 
> It looks like the EXPORT_SYMBOL() needs to be after the definition.
> 
> However, I tried adding "EXPORT_SYMBOL(mach_powermac);" after the
> define_machine(powermac) and now sound works for me with my original
> I2C_POWERMAC=y SND_POWERMAC=m configuration.
Yup, Paul has a working patch already, will be in 2.6.17 soonish. 
Cheers,
Ben.
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