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

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Message-ID: <20120703132447.GN29030@opensource.wolfsonmicro.com>
Date:	Tue, 3 Jul 2012 14:24:47 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.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
Subject: Re: [PATCH 1/1] mfd: Fix runtime warning caused by duplicate device
 registration

On Tue, Jul 03, 2012 at 02:07:45PM +0100, Lee Jones wrote:
> On 03/07/12 13:35, Mark Brown wrote:

> >Do we really want to create MFD cells like this (which are really Linux
> >internal things and might vary if another OS or another version of Linux
> >changes its internal abstractions) from the device tree?

> We're not creating them. We're merely using current infrastructure.

*Very* recently added infrastructure which caused you to notice this...

> Before, when we probed each device from Device Tree we came up
> against some fairly major limitations of the Device Tree. As a
> result, Arnd and I agreed that this was the way to go.

I'm really unconvinced that instnatiating the MFD cells from device tree
is in general a good idea.

> See c5395e7ed8f16cc7bb72a783de68659db5aed515 for a short description
> of the troubles we faced.

$ git show c5395e7ed8f16cc7bb72a783de68659db5aed515
fatal: bad object c5395e7ed8f16cc7bb72a783de68659db5aed515

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