Re: [PATCH 1/5] Clocklib: add generic framework for managingclocks.

From: Dmitry Baryshkov
Date: Tue Apr 15 2008 - 06:11:37 EST


On Tue, Apr 15, 2008 at 11:53:32AM +0200, Pavel Machek wrote:
> > On Tue, 15 Apr 2008 13:34:51 +0400 Dmitry Baryshkov <dbaryshkov@xxxxxxxxx> wrote:
> >
> > > On Mon, Apr 14, 2008 at 11:13:30PM -0700, Andrew Morton wrote:
> > > > On Sun, 13 Apr 2008 18:43:12 +0400 Dmitry Baryshkov <dbaryshkov@xxxxxxxxx> wrote:
> > > >
> > > > > +#define FUNC_TO_CLK(func) &(&(struct clk_function) func)->clk
> > > >
> > > > scratched my head for a while, was unable to work out what this does.
> > > > It is unused, so I think it can be zapped?
> > >
> > > It take clk_function and returns pointer to the contained struct clk.
> >
> > Then why does it cast a clk_function to a clk_function?
> >
> > The innermost `&' hurts my brain.
>
> Hmm, is that obfuscated way of writing
>
> &(func.clk)

Oops... Yes. Then it really can be dropped.

>
> ?
> Pavel
>
> --
> (english) http://www.livejournal.com/~pavelmachek
> (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

--
With best wishes
Dmitry

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