linux-kernel - Re: [PATCH 31/58] move omap_hdq's probe function to .devinit.text

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Message-ID: <20090328082148.GA20668@ioremap.net>
Date:	Sat, 28 Mar 2009 11:21:49 +0300
From:	Evgeniy Polyakov <zbr@...emap.net>
To:	Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Stanley.Miao" <stanley.miao@...driver.com>,
	Madhusudhan Chikkature <madhu.cr@...com>,
	Felipe Balbi <felipe.balbi@...ia.com>
Subject: Re: [PATCH 31/58] move omap_hdq's probe function to .devinit.text

Hi Uwe.

On Sat, Mar 28, 2009 at 12:26:52AM +0100, Uwe Kleine-König (u.kleine-koenig@...gutronix.de) wrote:
> A pointer to omap_hdq_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.

I wonder if it can be hotplugged, but for the consistency it looks good.

-- 
	Evgeniy Polyakov
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