linux-kernel - Re: [PATCH 14/58] move sh_flctl's probe function to .devinit.text

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Date:	Mon, 30 Mar 2009 11:26:20 +0900
From:	Yoshihiro Shimoda <shimoda.yoshihiro@...esas.com>
To:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Woodhouse <David.Woodhouse@...el.com>,
	Paul Mundt <lethal@...ux-sh.org>
Subject: Re: [PATCH 14/58] move sh_flctl's probe function to .devinit.text

Acked-by: Yoshihiro Shimoda <shimoda.yoshihiro@...esas.com>

Thanks,
Yoshihiro Shimoda

Uwe Kleine-König wrote:
> A pointer to flctl_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: Yoshihiro Shimoda <shimoda.yoshihiro@...esas.com>
> Cc: David Woodhouse <David.Woodhouse@...el.com>
> Cc: Paul Mundt <lethal@...ux-sh.org>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> ---
>  drivers/mtd/nand/sh_flctl.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/mtd/nand/sh_flctl.c b/drivers/mtd/nand/sh_flctl.c
> index 821acb0..fdc0e4e 100644
> --- a/drivers/mtd/nand/sh_flctl.c
> +++ b/drivers/mtd/nand/sh_flctl.c
> @@ -763,7 +763,7 @@ static int flctl_chip_init_tail(struct mtd_info *mtd)
>  	return 0;
>  }
>  
> -static int __init flctl_probe(struct platform_device *pdev)
> +static int __devinit flctl_probe(struct platform_device *pdev)
>  {
>  	struct resource *res;
>  	struct sh_flctl *flctl;

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