linux-kernel - Re: [PATCH v4 04/12] ASoC: qcom: lpass-platform: fix memory leak

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Date:   Fri, 24 Jul 2020 12:21:45 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Rohit kumar <rohitkr@...eaurora.org>, agross@...nel.org,
        bjorn.andersson@...aro.org, lgirdwood@...il.com,
        broonie@...nel.org, robh+dt@...nel.org, plai@...eaurora.org,
        bgoswami@...eaurora.org, perex@...ex.cz, tiwai@...e.com,
        linux-arm-msm@...r.kernel.org, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 04/12] ASoC: qcom: lpass-platform: fix memory leak



On 22/07/2020 11:31, Rohit kumar wrote:
> lpass_pcm_data is never freed. Free it in close
> ops to avoid memory leak.
> 
> Fixes: 022d00ee0b55 ("ASoC: lpass-platform: Fix broken pcm data usage")
> Signed-off-by: Rohit kumar <rohitkr@...eaurora.org>


Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>

> ---
>   sound/soc/qcom/lpass-platform.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/sound/soc/qcom/lpass-platform.c b/sound/soc/qcom/lpass-platform.c
> index fb9acfd..b195f3d 100644
> --- a/sound/soc/qcom/lpass-platform.c
> +++ b/sound/soc/qcom/lpass-platform.c
> @@ -61,7 +61,7 @@ static int lpass_platform_pcmops_open(struct snd_soc_component *component,
>   	int ret, dma_ch, dir = substream->stream;
>   	struct lpass_pcm_data *data;
>   
> -	data = devm_kzalloc(soc_runtime->dev, sizeof(*data), GFP_KERNEL);
> +	data = kzalloc(sizeof(*data), GFP_KERNEL);
>   	if (!data)
>   		return -ENOMEM;
>   
> @@ -118,6 +118,7 @@ static int lpass_platform_pcmops_close(struct snd_soc_component *component,
>   	if (v->free_dma_channel)
>   		v->free_dma_channel(drvdata, data->dma_ch);
>   
> +	kfree(data);
>   	return 0;
>   }
>   
>