linux-kernel - Re: [PATCH v2] ASoC: meson: fixes the missed kfree() for axg_card_add_tdm

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Message-ID: <1j7dv2sf7w.fsf@starbuckisacylon.baylibre.com>
Date:   Fri, 17 Jul 2020 10:44:35 +0200
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Jing Xiangfeng <jingxiangfeng@...wei.com>, lgirdwood@...il.com,
        broonie@...nel.org, perex@...ex.cz, tiwai@...e.com,
        khilman@...libre.com, kuninori.morimoto.gx@...esas.com
Cc:     alsa-devel@...a-project.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] ASoC: meson: fixes the missed kfree() for axg_card_add_tdm_loopback


On Fri 17 Jul 2020 at 10:22, Jing Xiangfeng <jingxiangfeng@...wei.com> wrote:

> axg_card_add_tdm_loopback() misses to call kfree() in an error path. We
> can use devm_kasprintf() to fix the issue, also improve maintainability.
> So use it instead.
>
> Fixes: c84836d7f650 ("ASoC: meson: axg-card: use modern dai_link style")
> Signed-off-by: Jing Xiangfeng <jingxiangfeng@...wei.com>

Reviewed-by: Jerome Brunet <jbrunet@...libre.com>

> ---
>  sound/soc/meson/axg-card.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/sound/soc/meson/axg-card.c b/sound/soc/meson/axg-card.c
> index 89f7f64747cd..47f2d93224fe 100644
> --- a/sound/soc/meson/axg-card.c
> +++ b/sound/soc/meson/axg-card.c
> @@ -116,7 +116,7 @@ static int axg_card_add_tdm_loopback(struct snd_soc_card *card,
>  
>  	lb = &card->dai_link[*index + 1];
>  
> -	lb->name = kasprintf(GFP_KERNEL, "%s-lb", pad->name);
> +	lb->name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-lb", pad->name);
>  	if (!lb->name)
>  		return -ENOMEM;