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From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Kim Kyuwon <q1.kim@samsung.com>, Kim Kyuwon <chammoru@gmail.com>,
	Richard Purdie <rpurdie@rpsys.net>,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] leds: Convert bd2802 driver to dev_pm_ops
Date: Fri, 21 Jan 2011 12:13:53 +0000	[thread overview]
Message-ID: <20110121121352.GD8186@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <20110120153528.4a535065.akpm@linux-foundation.org>

On Thu, Jan 20, 2011 at 03:35:28PM -0800, Andrew Morton wrote:

> It's tricky to get the compiler/linker to discard code and data without
> triggering an unused-var warning.  cpu_notifier() does it by emitting a
> reference:

SIMPLE_DEV_PM_OPS() is being a bit more brute force than that - it
just defines out the reference if compiled without PM_SLEEP.  You still
need the ifdefs around the function definitions, but not their uses.

      reply	other threads:[~2011-01-21 12:13 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-20 21:36 Mark Brown
2011-01-20 23:12 ` Andrew Morton
2011-01-20 23:24   ` Mark Brown
2011-01-20 23:35     ` Andrew Morton
2011-01-21 12:13       ` Mark Brown [this message]

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