From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolin Chen <nicoleotsuka@gmail.com>
Date: Mon, 21 Dec 2015 07:34:32 +0000
Subject: Re: [PATCH 1/4] ASoC: imx-pcm-dma: add NULL test
Message-Id: <20151221073431.GD3524@Asurada-CZ80>
List-Id: <kernel-janitors.vger.kernel.org>
References: <1450610153-7746-1-git-send-email-Julia.Lawall@lip6.fr>
 <1450610153-7746-2-git-send-email-Julia.Lawall@lip6.fr>
In-Reply-To: <1450610153-7746-2-git-send-email-Julia.Lawall@lip6.fr>
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To: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Timur Tabi <timur@tabi.org>, kernel-janitors@vger.kernel.org, Xiubo Li <Xiubo.Lee@gmail.com>, Liam Girdwood <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>, Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>, alsa-devel@alsa-project.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org

On Sun, Dec 20, 2015 at 12:15:50PM +0100, Julia Lawall wrote:
> Add NULL test on call to devm_kzalloc.
> 
> The semantic match that finds this problem is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> expression x;
> @@
> 
> * x = devm_kzalloc(...);
>   ... when != x = NULL
>   *x
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>

Thank you

> 
> ---
>  sound/soc/fsl/imx-pcm-dma.c |    2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/sound/soc/fsl/imx-pcm-dma.c b/sound/soc/fsl/imx-pcm-dma.c
> index 1fc01ed..f3d3d1f 100644
> --- a/sound/soc/fsl/imx-pcm-dma.c
> +++ b/sound/soc/fsl/imx-pcm-dma.c
> @@ -62,6 +62,8 @@ int imx_pcm_dma_init(struct platform_device *pdev, size_t size)
>  
>  	config = devm_kzalloc(&pdev->dev,
>  			sizeof(struct snd_dmaengine_pcm_config), GFP_KERNEL);
> +	if (!config)
> +		return -ENOMEM;
>  	*config = imx_dmaengine_pcm_config;
>  	if (size)
>  		config->prealloc_buffer_size = size;
>