ASoC: soc-core: use devm_kzalloc() for rtd

Current rtd, rtd->dev, rtd->codec_dais are created by normal kzalloc(),
but we want to use devm_kzalloc() as much as possible.

Created rtd->dev is registered by device_register() at
soc_new_pcm_runtime(), and it will be freed at
soc_free_pcm_runtime() by device_unregister().

This means, if we can use devm_kzalloc(rtd->dev, xxx) for
rtd / rtd->codec_dais, all these are automatically freed
via soc_free_pcm_runtime().
This patch uses devm_kzalloc(rtd->dev, xxx) for rtd / rtd->codec_dais.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/877e5nbu1z.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 4a47ba9..b16a942 100644 (file)
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -370,7 +370,6 @@ static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime *rtd)
        if (!rtd)
                return;
 
-       kfree(rtd->codec_dais);
        list_del(&rtd->list);
 
        /*
@@ -384,7 +383,6 @@ static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime *rtd)
         *      soc_new_pcm_runtime()
         */
        device_unregister(rtd->dev);
-       kfree(rtd);
 }
 
 static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
@@ -416,7 +414,7 @@ static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
        /*
         * for rtd
         */
-       rtd = kzalloc(sizeof(struct snd_soc_pcm_runtime), GFP_KERNEL);
+       rtd = devm_kzalloc(dev, sizeof(*rtd), GFP_KERNEL);
        if (!rtd)
                goto free_rtd;
 
@@ -426,7 +424,7 @@ static struct snd_soc_pcm_runtime *soc_new_pcm_runtime(
        /*
         * for rtd->codec_dais
         */
-       rtd->codec_dais = kcalloc(dai_link->num_codecs,
+       rtd->codec_dais = devm_kcalloc(dev, dai_link->num_codecs,
                                        sizeof(struct snd_soc_dai *),
                                        GFP_KERNEL);
        if (!rtd->codec_dais)