[14/39,v2] ASoC: simple-card-utils: add asoc_simple_card_clean_reference()

Commit Message

Kuninori Morimoto May 31, 2016, 9:04 a.m. UTC

From: Kuninori Morimoto <[e-mail]>

simple-card needs to decrease the reference count of the device nodes.
This patch makes this method simple style standard.

Signed-off-by: Kuninori Morimoto <[e-mail]>
---
 include/sound/simple_card_utils.h     |  2 ++
 sound/soc/generic/simple-card-utils.c | 15 +++++++++++++++
 2 files changed, 17 insertions(+)

Patch

diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_utils.h
index 7846467..7dbb349 100644
--- a/include/sound/simple_card_utils.h
+++ b/include/sound/simple_card_utils.h
@@ -72,4 +72,6 @@  int asoc_simple_card_canonicalize_dailink(struct snd_soc_dai_link *dai_link);
 int asoc_simple_card_canonicalize_cpu(struct snd_soc_dai_link *dai_link,
 				      int is_single_links);
 
+int asoc_simple_card_clean_reference(struct snd_soc_card *card);
+
 #endif /* __SIMPLE_CARD_CORE_H */
diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c
index b8977ca..8bd4c83 100644
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -271,3 +271,18 @@  int asoc_simple_card_canonicalize_cpu(struct snd_soc_dai_link *dai_link,
 	return 0;
 }
 EXPORT_SYMBOL_GPL(asoc_simple_card_canonicalize_cpu);
+
+int asoc_simple_card_clean_reference(struct snd_soc_card *card)
+{
+	struct snd_soc_dai_link *dai_link;
+	int num_links;
+
+	for (num_links = 0, dai_link = card->dai_link;
+	     num_links < card->num_links;
+	     num_links++, dai_link++) {
+		of_node_put(dai_link->cpu_of_node);
+		of_node_put(dai_link->codec_of_node);
+	}
+	return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_card_clean_reference);