[PATCH 16/21] ASoC: soc-core: add snd_soc_unregister_dai()

[Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>]

From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>

It is easy to read code if it is cleanly using paired function/naming,
like start <-> stop, register <-> unregister, etc, etc.
But, current ALSA SoC code is very random, unbalance, not paired, etc.
It is easy to create bug at the such code, and is difficult to debug.

This patch adds missing soc_del_dai() and snd_soc_unregister_dai().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
 include/sound/soc.h  |  1 +
 sound/soc/soc-core.c | 19 ++++++++++++++-----
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/include/sound/soc.h b/include/sound/soc.h
index 827322a..766fa81 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -1329,6 +1329,7 @@ struct snd_soc_dai_link *snd_soc_find_dai_link(struct snd_soc_card *card,
 int snd_soc_register_dai(struct snd_soc_component *component,
 			 struct snd_soc_dai_driver *dai_drv,
 			 bool legacy_dai_naming);
+void snd_soc_unregister_dai(struct snd_soc_dai *dai);
 
 struct snd_soc_dai *snd_soc_find_dai(
 	const struct snd_soc_dai_link_component *dlc);
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 12cb1a0..d9f968c 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -2535,6 +2535,12 @@ static inline char *fmt_multiple_name(struct device *dev,
 	return devm_kstrdup(dev, dai_drv->name, GFP_KERNEL);
 }
 
+static void soc_del_dai(struct snd_soc_dai *dai)
+{
+	dev_dbg(dai->dev, "ASoC: Unregistered DAI '%s'\n", dai->name);
+	list_del(&dai->list);
+}
+
 /* Create a DAI and add it to the component's DAI list */
 static struct snd_soc_dai *soc_add_dai(struct snd_soc_component *component,
 	struct snd_soc_dai_driver *dai_drv,
@@ -2584,6 +2590,12 @@ static struct snd_soc_dai *soc_add_dai(struct snd_soc_component *component,
 	return dai;
 }
 
+void snd_soc_unregister_dai(struct snd_soc_dai *dai)
+{
+	soc_del_dai(dai);
+}
+EXPORT_SYMBOL_GPL(snd_soc_unregister_dai);
+
 /**
  * snd_soc_register_dai - Register a DAI dynamically & create its widgets
  *
@@ -2637,11 +2649,8 @@ static void snd_soc_unregister_dais(struct snd_soc_component *component)
 {
 	struct snd_soc_dai *dai, *_dai;
 
-	for_each_component_dais_safe(component, dai, _dai) {
-		dev_dbg(component->dev, "ASoC: Unregistered DAI '%s'\n",
-			dai->name);
-		list_del(&dai->list);
-	}
+	for_each_component_dais_safe(component, dai, _dai)
+		snd_soc_unregister_dai(dai);
 }
 
 /**
-- 
2.7.4

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