mpc512x/clock: fix clk_get logic

[Benjamin Herrenschmidt]

On Sat, 2009-10-31 at 14:01 +0100, Wolfram Sang wrote:
> Hello Ben,
> 
> > Have you considered switching to my proposed device-tree based clock
> > reprentation ?
> 
> You mean this one?
> 
> http://patchwork.ozlabs.org/patch/31551/
> 
> Sorry, I have missed it up to now :(
> 
> While I think (after one glimpse) this moves things into the right direction,
> my priority at the moment is to get the mscan driver working on 512x (and then
> to mainline). For that, I needed the patch I posted. I hope I can have another
> look at your proposal later on, it looks really worth it.
> 
> Until then I'd propose to consider this patch as it fixes a bug in clock
> assignment. But I leave the final decision to you maintainers, of course.

Sure I don't have major objections against your patch (though who is
formally mpc512x maintainer to ack it ?), I just wanted to make sure you
had a look at my proposal since this is almost the only platform to use
the clock API today in arch/powerpc.

Cheers,
Ben.