Re: [PATCH] genirq: ARM dyntick cleanup

["Randy.Dunlap" <rdunlap@xenotime.net>]

On Mon, 03 Jul 2006 19:27:07 +0200 Arjan van de Ven wrote:

> On Mon, 2006-07-03 at 10:13 -0700, Linus Torvalds wrote:
> >         #ifndef xyzzy
> >         #define zyzzy() /* empty */
> >         #endif
> > 
> 
> now if you write it as
> 
> #define zyzzy() do { ; } while (0)
> 
> it even works in a
> 
> if (foo())
> 	zyzzy();
> bar();
> 
> scenario 
> 
> (I know you know that, just pointing that out before people copy your
> example :-)

OK, I'll bite.  What part of Linus's macro doesn't work.
I compiled your foo/zyzzy/bar example with both his "empty"
macro and the do-while macro.  Same code produced both ways,
no compile warnings/errors.

---
~Randy
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