linux-kernel - Re: [PATCH 2/2] leds-lp5523: Fix riskiness of the page fault

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Date:	Thu, 13 Sep 2012 11:56:01 +0800
From:	Bryan Wu <bryan.wu@...onical.com>
To:	"Kim, Milo" <Milo.Kim@...com>
Cc:	"linux-leds@...r.kernel.org" <linux-leds@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Richard Purdie <rpurdie@...ys.net>
Subject: Re: [PATCH 2/2] leds-lp5523: Fix riskiness of the page fault

On Wed, Sep 12, 2012 at 8:16 PM, Kim, Milo <Milo.Kim@...com> wrote:
>  The last attribute should be terminated as NULL because any member of
>  attribute structure is accessed while adding the sysfs file.
>  If not, invalid address may cause the page fault problem.
>

Thanks, applied
-Bryan

> Signed-off-by: Milo(Woogyom) Kim <milo.kim@...com>
> ---
>  drivers/leds/leds-lp5523.c |    1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
> index 5ebdc92..97994ff 100644
> --- a/drivers/leds/leds-lp5523.c
> +++ b/drivers/leds/leds-lp5523.c
> @@ -759,6 +759,7 @@ static struct attribute *lp5523_attributes[] = {
>         &dev_attr_engine2_leds.attr,
>         &dev_attr_engine3_load.attr,
>         &dev_attr_engine3_leds.attr,
> +       NULL,
>  };
>
>  static const struct attribute_group lp5523_group = {
> --
> 1.7.9.5
>
>
> Best Regards,
> Milo
>
>



-- 
Bryan Wu <bryan.wu@...onical.com>
Kernel Developer    +86.186-168-78255 Mobile
Canonical Ltd.      www.canonical.com
Ubuntu - Linux for human beings | www.ubuntu.com
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