linux-kernel - Re: [PATCH] move orion_nand's probe function to .devinit.text

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Message-ID: <20090714080947.GA2896@pengutronix.de>
Date:	Tue, 14 Jul 2009 10:09:47 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Nicolas Pitre <nico@...vell.com>
Cc:	Greg KH <gregkh@...e.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Lennert Buijtenhek <buytenh@...vell.com>,
	Saeed Bishara <saeed@...vell.com>,
	Jörn Engel <joern@...fs.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] move orion_nand's probe function to .devinit.text

Hi Nicolas,

On Mon, Jul 13, 2009 at 03:37:23PM -0400, Nicolas Pitre wrote:
> On Sat, 11 Jul 2009, Uwe Kleine-König wrote:
> 
> > A pointer to orion_nand_probe is passed to the core via
> > platform_driver_register and so the function must not disappear when the
> > .init sections are discarded.  Otherwise (if also having HOTPLUG=y)
> > unbinding and binding a device to the driver via sysfs will result in an
> > oops as does a device being registered late.
> > 
> > An alternative to this patch is using platform_driver_probe instead of
> > platform_driver_register plus removing the pointer to the probe function
> > from the struct platform_driver.
> 
> For those kind of platform devices I'd prefer the alternative.
Can I interpret that as your intend to implement and test it?

Best regards
Uwe

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