linux-kernel - Re: [PATCH] make mmci-omap using platform_driver

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Message-ID: <20090402175148.GA29544@pengutronix.de>
Date:	Thu, 2 Apr 2009 19:51:48 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	linux-kernel@...r.kernel.org
Cc:	Grazvydas Ignotas <notasas@...il.com>,
	Pierre Ossman <drzeus-mmc@...eus.cx>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	Tony Lindgren <tony@...mide.com>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Paul Walmsley <paul@...an.com>,
	Jarkko Lavinen <jarkko.lavinen@...ia.com>,
	Hiroshi DOYU <Hiroshi.DOYU@...ia.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Carlos Eduardo Aguiar <carlos.aguiar@...t.org.br>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] make mmci-omap using platform_driver_probe

Hello,

Ups, sorry, I got the In-Reply-To wrong.  This should have been a reply
to <1238196439-16535-27-git-send-email-u.kleine-koenig@...gutronix.de>.

Best regards
Uwe

On Thu, Apr 02, 2009 at 07:47:41PM +0200, Uwe Kleine-König wrote:
> A pointer to mmc_omap_probe which lives in .init.text is passed to the
> core via platform_driver_register and so the kernel might oops if probe
> is called after the init code is discarded.
> 
> As requested by David Brownell platform_driver_probe is used instead of
> moving the probe function to .devinit.text.  This saves some memory, but
> might have the downside that a device being registered after the call to
> mmc_omap_init but before the init sections are discarded will not be
> bound anymore to the driver.

-- 
Pengutronix e.K.                              | Uwe Kleine-König            |
Industrial Linux Solutions                    | http://www.pengutronix.de/  |
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