[alsa-devel] [RFC PATCH 4/5] ASoC: remove those unnecessary #ifdef CONFIG_PXA3xx .. #endif

Mark Brown broonie at sirena.org.uk
Thu Apr 23 10:17:15 CEST 2009

On Thu, Apr 23, 2009 at 01:06:55PM +0800, Eric Miao wrote:
> These are unnecessary since the compiler is smart enough to optimize
> the code away if CONFIG_PXA3xx is not defined, when cpu_is_pxa3xx()
> will just be expanded to constant 0.

This isn't done for compiler optimisation - it's done because the
register bit macros are only defined if PXA3xx support is being built
in.  I've no problem with removing those guards but without that you'll
get build failures on PXA2xx.

More information about the Alsa-devel mailing list