linux-kernel - Re: [PATCH 1/3] ASoC: davinci-mcasp: Handle return value of devm

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Date:   Thu, 21 Sep 2017 14:11:54 +0300
From:   Peter Ujfalusi <peter.ujfalusi@...com>
To:     Arvind Yadav <arvind.yadav.cs@...il.com>, <lgirdwood@...il.com>,
        <broonie@...nel.org>, <perex@...ex.cz>, <tiwai@...e.com>,
        <timur@...i.org>, <nicoleotsuka@...il.com>, <Xiubo.Lee@...il.com>,
        <fabio.estevam@....com>, <alsa-devel@...a-project.org>,
        <linux-kernel@...r.kernel.org>
CC:     <linuxppc-dev@...ts.ozlabs.org>, <linux-omap@...r.kernel.org>
Subject: Re: [PATCH 1/3] ASoC: davinci-mcasp: Handle return value of
 devm_kasprintf


Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

On 2017-09-20 13:06, Arvind Yadav wrote:
> devm_kasprintf() can fail here and we must check its return value.

Acked-by: Peter Ujfalusi <peter.ujfalusi@...com>

> Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
> ---
>  sound/soc/davinci/davinci-mcasp.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c
> index f395bbc..d1a4aa2 100644
> --- a/sound/soc/davinci/davinci-mcasp.c
> +++ b/sound/soc/davinci/davinci-mcasp.c
> @@ -1867,6 +1867,10 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
>  	if (irq >= 0) {
>  		irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_common",
>  					  dev_name(&pdev->dev));
> +		if (!irq_name) {
> +			ret = -ENOMEM;
> +			goto err;
> +		}
>  		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
>  						davinci_mcasp_common_irq_handler,
>  						IRQF_ONESHOT | IRQF_SHARED,
> @@ -1884,6 +1888,10 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
>  	if (irq >= 0) {
>  		irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_rx",
>  					  dev_name(&pdev->dev));
> +		if (!irq_name) {
> +			ret = -ENOMEM;
> +			goto err;
> +		}
>  		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
>  						davinci_mcasp_rx_irq_handler,
>  						IRQF_ONESHOT, irq_name, mcasp);
> @@ -1899,6 +1907,10 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
>  	if (irq >= 0) {
>  		irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_tx",
>  					  dev_name(&pdev->dev));
> +		if (!irq_name) {
> +			ret = -ENOMEM;
> +			goto err;
> +		}
>  		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
>  						davinci_mcasp_tx_irq_handler,
>  						IRQF_ONESHOT, irq_name, mcasp);
> 

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