linux-kernel - Re: [RFC PATCH v1 12/15] firmware: introduce device_cache/uncache_fw

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Message-Id: <20120906154459.8b3b73fa.akpm@linux-foundation.org>
Date:	Thu, 6 Sep 2012 15:44:59 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Ming Lei <ming.lei@...onical.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Borislav Petkov <borislav.petkov@....com>,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v1 12/15] firmware: introduce
 device_cache/uncache_fw_images

On Sat,  4 Aug 2012 12:01:27 +0800
Ming Lei <ming.lei@...onical.com> wrote:

> This patch introduces the three helpers below:
> 
> 	void device_cache_fw_images(void)
> 	void device_uncache_fw_images(void)
> 	void device_uncache_fw_images_delay(unsigned long)

CONFIG_PM=n:

drivers/base/firmware_class.c:1147: warning: 'device_cache_fw_images' defined but not used
drivers/base/firmware_class.c:1212: warning: 'device_uncache_fw_images_delay' defined but not used

the fix is not trivial - this patch added quite a lot of code and data
structure bloat which will never be used on CONFIG_PM=n kernels.


(Well, a trivial fix would be to eradicate CONFIG_PM=n, but...)
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