linux-kernel - Re: [PATCH 1/9] platform-drivers: move probe to .devinit.text in arch/arm

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Message-ID: <20100204205606.GA8659@doriath.ww600.siemens.net>
Date:	Thu, 4 Feb 2010 23:56:06 +0300
From:	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
To:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Cc:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arnaud Patard <arnaud.patard@...-net.org>,
	Ben Dooks <ben-linux@...ff.org>,
	Eric Miao <eric.miao@...vell.com>,
	Kristoffer Ericson <Kristoffer.Ericson@...il.com>,
	Liam Girdwood <liam.girdwood@...fsonmicro.com>,
	Paul Sokolovsky <pmiscml@...il.com>,
	Richard Purdie <rpurdie@...ys.net>,
	Russell King <rmk+kernel@....linux.org.uk>
Subject: Re: [PATCH 1/9] platform-drivers: move probe to .devinit.text in
 arch/arm

On Thu, Feb 04, 2010 at 08:56:49PM +0100, Uwe Kleine-König wrote:
> A pointer to a probe callback 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: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Arnaud Patard <arnaud.patard@...-net.org>
> Cc: Ben Dooks <ben-linux@...ff.org>
> Cc: Dmitry Baryshkov <dbaryshkov@...il.com>
> Cc: Eric Miao <eric.miao@...vell.com>
> Cc: Kristoffer Ericson <Kristoffer.Ericson@...il.com>
> Cc: Liam Girdwood <liam.girdwood@...fsonmicro.com>
> Cc: Paul Sokolovsky <pmiscml@...il.com>
> Cc: Richard Purdie <rpurdie@...ys.net>
> Cc: Russell King <rmk+kernel@....linux.org.uk>

sharpsl_pm part:
Acked-by: Dmitry Eremin-Solenikov <dbaryshkov@...il.com>

-- 
With best wishes
Dmitry

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