[U-Boot] [PATCH V2] MPC8xxx: Define cache ops for USB

[Joakim Tjernlund]

>
> Hello Marek,
>
> On 5/25/2012 7:44 PM, Marek Vasut wrote:
> > This patch conditionally defines flush_dcache_range() and
> > invalidate_dcache_range() on MPC8xxx, to avoid EHCI complaining,
> > resulting in the following output:
> <snip>
> > +
> > +void invalidate_dcache_range(unsigned long start, unsigned long stop)
> > +{
> > +}
> > +
> > +void flush_dcache_range(unsigned long start, unsigned long stop)
> > +{
> > +}
>
> Don't mind if this is a stupid question.
> Can't this be placed in some common header?
> Just to avoid code duplication!

And why are they just dummy functions? There are cache flush instructions for ppc