linux-kernel - Re: [PATCH 1/2] jz4740-adc/jz4740-hwmon: check kmalloc() result

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Message-ID: <20100801224105.GB3052@sortiz-mobl>
Date:	Mon, 2 Aug 2010 00:41:06 +0200
From:	Samuel Ortiz <sameo@...ux.intel.com>
To:	Axel Lin <axel.lin@...il.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Lars-Peter Clausen <lars@...afoo.de>
Subject: Re: [PATCH 1/2] jz4740-adc/jz4740-hwmon: check kmalloc() result

Hi Axel,

On Thu, Jul 29, 2010 at 04:25:53PM +0800, Axel Lin wrote:
> If kmalloc() fails, exit with -ENOMEM.
Could you please separate this patch in 2, as the 2 drivers live in different
trees for now ?

Cheers,
Samuel.


> Signed-off-by: Axel Lin <axel.lin@...il.com>
> ---
> This patch is against linux-next.
>  drivers/hwmon/jz4740-hwmon.c |    4 ++++
>  drivers/mfd/jz4740-adc.c     |    4 ++++
>  2 files changed, 8 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/hwmon/jz4740-hwmon.c b/drivers/hwmon/jz4740-hwmon.c
> index 72a4335..1c8b3d9 100644
> --- a/drivers/hwmon/jz4740-hwmon.c
> +++ b/drivers/hwmon/jz4740-hwmon.c
> @@ -107,6 +107,10 @@ static int __devinit jz4740_hwmon_probe(struct platform_device *pdev)
>  	struct jz4740_hwmon *hwmon;
>  
>  	hwmon = kmalloc(sizeof(*hwmon), GFP_KERNEL);
> +	if (!hwmon) {
> +		dev_err(&pdev->dev, "Failed to allocate driver structure\n");
> +		return -ENOMEM;
> +	}
>  
>  	hwmon->cell = pdev->dev.platform_data;
>  
> diff --git a/drivers/mfd/jz4740-adc.c b/drivers/mfd/jz4740-adc.c
> index 7a844ae..2846d24 100644
> --- a/drivers/mfd/jz4740-adc.c
> +++ b/drivers/mfd/jz4740-adc.c
> @@ -260,6 +260,10 @@ static int __devinit jz4740_adc_probe(struct platform_device *pdev)
>  	int irq;
>  
>  	adc = kmalloc(sizeof(*adc), GFP_KERNEL);
> +	if (!adc) {
> +		dev_err(&pdev->dev, "Failed to allocate driver structure\n");
> +		return -ENOMEM;
> +	}
>  
>  	adc->irq = platform_get_irq(pdev, 0);
>  	if (adc->irq < 0) {
> -- 
> 1.5.4.3
> 
> 
> 

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