linux-kernel - Re: [PATCH 46/58] move sgiwd93's probe function to .devinit.text

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Message-ID: <20090328104627.GE17386@linux-mips.org>
Date:	Sat, 28 Mar 2009 11:46:27 +0100
From:	Ralf Baechle <ralf@...ux-mips.org>
To:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dmitri Vorobiev <dmitri.vorobiev@...ial.fi>,
	James Bottomley <James.Bottomley@...senPartnership.com>,
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
	peter fuerst <post@...st.de>,
	Henrik Kretzschmar <henne@...htwindheim.de>
Subject: Re: [PATCH 46/58] move sgiwd93's probe function to .devinit.text

On Sat, Mar 28, 2009 at 12:27:07AM +0100, Uwe Kleine-König wrote:

> A pointer to sgiwd93_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.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
> Cc: Dmitri Vorobiev <dmitri.vorobiev@...ial.fi>
> Cc: James Bottomley <James.Bottomley@...senPartnership.com>
> Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
> Cc: Ralf Baechle <ralf@...ux-mips.org>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: peter fuerst <post@...st.de>
> Cc: Henrik Kretzschmar <henne@...htwindheim.de>

Acked-by: Ralf Baechle <ralf@...ux-mips.org>

  Ralf
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