linux-kernel - Re: [PATCH 5/5] input: i8042 - add runtime check in x86's i8042_platform

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Date:	Fri, 2 Jul 2010 09:59:23 -0700
From:	Dmitry Torokhov <dtor@...l.ru>
To:	feng.tang@...el.com
Cc:	linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...e.hu,
	hpa@...or.com, jacob.jun.pan@...el.com, randy.dunlap@...cle.com
Subject: Re: [PATCH 5/5] input: i8042 - add runtime check in x86's i8042_platform_init

Hi Feng,

On Friday, July 02, 2010 01:35:16 am feng.tang@...el.com wrote:
> From: Feng Tang <feng.tang@...el.com>
> 
> Then it will first check x86_platforms's i8042 detection result,
> then go on with normal probe.
> 
> Cc: Dmitry Torokhov <dtor@...l.ru>
> Signed-off-by: Feng Tang <feng.tang@...el.com>
> ---
>  drivers/input/serio/i8042-x86ia64io.h |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/input/serio/i8042-x86ia64io.h
> b/drivers/input/serio/i8042-x86ia64io.h index 6168469..2e14fc5 100644
> --- a/drivers/input/serio/i8042-x86ia64io.h
> +++ b/drivers/input/serio/i8042-x86ia64io.h
> @@ -840,6 +840,10 @@ static int __init i8042_platform_init(void)
>  {
>  	int retval;
> 
> +	/* Just return if pre-detection shows no i8042 controller exist */
> +	if (!x86_platform.i8042_detect())
> +		return -ENODEV;
> +

I think this needs to be protected with "#ifdef CONFIG_X86" as the file is 
shared between X86 and IA64.

Thanks,

Dmitry
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