linux-kernel - Re: [patch] mfd: off by one issue

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Message-ID: <20100402095511.GA8010@sortiz.org>
Date:	Fri, 2 Apr 2010 11:55:12 +0200
From:	Samuel Ortiz <sameo@...ux.intel.com>
To:	Dan Carpenter <error27@...il.com>,
	Paul Fertser <fercerpav@...il.com>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Arnaud Patard <arnaud.patard@...-net.org>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [patch] mfd: off by one issue

Hi Dan,

On Sun, Mar 28, 2010 at 02:28:08PM +0300, Dan Carpenter wrote:
> "pcf->irq_handler" has PCF50633_NUM_IRQ elements.
> 
> Signed-off-by: Dan Carpenter <error27@...il.com>
Patch applied, many thanks.

Cheers,
Samuel.


> diff --git a/drivers/mfd/pcf50633-core.c b/drivers/mfd/pcf50633-core.c
> index 03dcc92..4f13608 100644
> --- a/drivers/mfd/pcf50633-core.c
> +++ b/drivers/mfd/pcf50633-core.c
> @@ -217,7 +217,7 @@ static struct attribute_group pcf_attr_group = {
>  int pcf50633_register_irq(struct pcf50633 *pcf, int irq,
>  			void (*handler) (int, void *), void *data)
>  {
> -	if (irq < 0 || irq > PCF50633_NUM_IRQ || !handler)
> +	if (irq < 0 || irq >= PCF50633_NUM_IRQ || !handler)
>  		return -EINVAL;
>  
>  	if (WARN_ON(pcf->irq_handler[irq].handler))
> @@ -234,7 +234,7 @@ EXPORT_SYMBOL_GPL(pcf50633_register_irq);
>  
>  int pcf50633_free_irq(struct pcf50633 *pcf, int irq)
>  {
> -	if (irq < 0 || irq > PCF50633_NUM_IRQ)
> +	if (irq < 0 || irq >= PCF50633_NUM_IRQ)
>  		return -EINVAL;
>  
>  	mutex_lock(&pcf->lock);

-- 
Intel Open Source Technology Centre
http://oss.intel.com/
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