linux-kernel - Re: [PATCH] mfd: intel_soc_pmic: Add missing error check for devm

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Date:	Mon, 16 Feb 2015 12:51:34 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Kiran Padwal <kiran.padwal@...rtplayin.com>
Cc:	Samuel Ortiz <sameo@...ux.intel.com>, linux-kernel@...r.kernel.org,
	Kiran Padwal <kiran.padwal21@...il.com>
Subject: Re: [PATCH] mfd: intel_soc_pmic: Add missing error check for
 devm_kzalloc

On Wed, 11 Feb 2015, Kiran Padwal wrote:

> This patch add a missing check on the return value of devm_kzalloc,
> which would cause a NULL pointer dereference in a OOM situation.
> 
> Signed-off-by: Kiran Padwal <kiran.padwal@...rtplayin.com>
> ---
>  drivers/mfd/intel_soc_pmic_core.c |    3 +++
>  1 file changed, 3 insertions(+)

Applied, thanks.

> diff --git a/drivers/mfd/intel_soc_pmic_core.c b/drivers/mfd/intel_soc_pmic_core.c
> index df7b064..80cef04 100644
> --- a/drivers/mfd/intel_soc_pmic_core.c
> +++ b/drivers/mfd/intel_soc_pmic_core.c
> @@ -64,6 +64,9 @@ static int intel_soc_pmic_i2c_probe(struct i2c_client *i2c,
>  	config = (struct intel_soc_pmic_config *)id->driver_data;
>  
>  	pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL);
> +	if (!pmic)
> +		return -ENOMEM;
> +
>  	dev_set_drvdata(dev, pmic);
>  
>  	pmic->regmap = devm_regmap_init_i2c(i2c, config->regmap_config);

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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