linux-kernel - Re: [PATCH 1/1] mfd: Fix runtime warning caused by duplicate device registration

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Message-ID: <CAOMZO5BQuJzAYPe+B792aNYv+xew3O0wp-UOjwggV28MbSZr9w@mail.gmail.com>
Date:	Thu, 5 Jul 2012 10:08:52 -0300
From:	Fabio Estevam <festevam@...il.com>
To:	Lee Jones <lee.jones@...aro.org>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linus.walleij@...ricsson.com, arnd@...db.de, sameo@...ux.intel.com,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: Re: [PATCH 1/1] mfd: Fix runtime warning caused by duplicate device registration

Hi Lee,

On Tue, Jul 3, 2012 at 8:59 AM, Lee Jones <lee.jones@...aro.org> wrote:
> We register the ab8500 as an MFD device from db8500 code during Device Tree
> boot in order to solve some limitations of DT. However, when Device Tree is
> not enabled, we still want to allow platform code to register the ab8500 in
> the normal way. Here we force MFD device registration of the ab8500 only
> when booting with Device Tree enabled.
>
> Solves this issue:
> WARNING: at fs/sysfs/dir.c:526 sysfs_add_one+0x88/0xb0()
> sysfs: cannot create duplicate filename '/bus/platform/devices/ab8500-core.0'

Does the following patch fix your issue?
http://www.spinics.net/lists/arm-kernel/msg182827.html

Regards,

Fabio Estevam
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