linux-kernel - Re: [PATCH 12/19] twl4030: mfd_cell is now implicitly available to drivers

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Message-ID: <20110203093154.GC21591@opensource.wolfsonmicro.com>
Date:	Thu, 3 Feb 2011 09:31:54 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Andres Salomon <dilinger@...ued.net>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	linux-kernel@...r.kernel.org,
	Peter Ujfalusi <peter.ujfalusi@...ia.com>,
	Liam Girdwood <lrg@...mlogic.co.uk>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	Timur Tabi <timur@...escale.com>, linux-input@...r.kernel.org,
	alsa-devel@...a-project.org
Subject: Re: [PATCH 12/19] twl4030: mfd_cell is now implicitly available to
 drivers

On Wed, Feb 02, 2011 at 11:03:26PM -0800, Andres Salomon wrote:
> Dmitry Torokhov <dmitry.torokhov@...il.com> wrote:

> > Then they are doing it incorrectly. One possible way is to have parent
> > device carry relevant data in its drvdata and have children get it
> > from there.

> I believe some drivers are even using the parent device already.  See
> drivers/leds/leds-mc13783.c, for example, whose parent device drvdata
> is used to pass around a struct mc13783 to its children.  Sounds
> like a possibility, will need to look into it further.

That's the current best practice approach.
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