From: Mark Brown <broonie@sirena.org.uk>
To: Eric Miao <eric.y.miao@gmail.com>
Cc: alsa-devel@alsa-project.org, Paul Shen <bshen9@marvell.com>,
linux-arm-kernel <linux-arm-kernel@lists.arm.linux.org.uk>,
Philipp Zabel <philipp.zabel@gmail.com>
Subject: Re: [RFC PATCH 4/5] ASoC: remove those unnecessary #ifdef CONFIG_PXA3xx .. #endif
Date: Thu, 23 Apr 2009 09:17:15 +0100 [thread overview]
Message-ID: <20090423081715.GA30105@sirena.org.uk> (raw)
In-Reply-To: <f17812d70904222206h27c58e40t5c8383133df1a7d0@mail.gmail.com>
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.
next prev parent reply other threads:[~2009-04-23 8:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-23 5:06 [RFC PATCH 4/5] ASoC: remove those unnecessary #ifdef CONFIG_PXA3xx .. #endif Eric Miao
2009-04-23 7:08 ` Daniel Mack
2009-04-23 8:17 ` Mark Brown [this message]
2009-04-23 8:33 ` Eric Miao
2009-04-23 9:04 ` Daniel Mack
2009-04-23 9:18 ` Eric Miao
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