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ASoC: soc-core: add comment for rtd freeing 

We don't need to mind freeing for rtd,
because it was created from devm_kzalloc(dev, xxx) which is rtd->dev.

This means, if rtd->dev was freed, rtd will be also freed
automatically.

	soc_new_pcm_runtime(...)
	{
		...
		rtd = devm_kzalloc(dev, ...);
		rtd->dev = dev;
		...
	}

This explanation was missing at soc_free_pcm_runtime() comment.
This patch indicates it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87sg4dxldn.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2021-03-30 14:26:28 +09:00 committed by Mark Brown
parent ad858508fd
commit f1b3ee789f
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1 changed files with 8 additions and 0 deletions
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8
sound/soc/soc-core.c
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@ -413,6 +413,14 @@ static void soc_free_pcm_runtime(struct snd_soc_pcm_runtime *rtd)
* it is alloced *before* rtd.
* see
* soc_new_pcm_runtime()
*
* We don't need to mind freeing for rtd,
* because it was created from dev (= rtd->dev)
* see
* soc_new_pcm_runtime()
*
* rtd = devm_kzalloc(dev, ...);
* rtd->dev = dev
*/
device_unregister(rtd->dev);
}