[PATCH 3/4] add rtas_service_present() helper

[Nathan Lynch]

Michael Ellerman wrote:
> On Wed, 2006-12-06 at 18:50 -0600, Nathan Lynch wrote:
> > To test for the existence of an RTAS function, we typically do:
> > 
> >    foo_token = rtas_token("foo");
> >    if (foo_token == RTAS_UNKNOWN_SERVICE)
> >       return;
> > 
> > Add a rtas_service_present method, which provides a more conventional
> > boolean interface for testing the existence of an RTAS method.
> 
> 
> I like it a lot ..
> 
> But should it be called rtas_token_present() ? :D

I considered that, but thought my name was a little more descriptive
-- a token is merely an integer value, but we're really interested in
whether the service named is available.

I don't really care that much either way, though :)