From: Kuninori Morimoto <[email protected]>

simple-card needs remove dai_link->cpu_dai_name if it CPU was
single DAI.
This patch makes this method simple style standard.

Signed-off-by: Kuninori Morimoto <[email protected]>
---
 include/sound/simple_card_utils.h     |  2 ++
 sound/soc/generic/simple-card-utils.c | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/include/sound/simple_card_utils.h 
b/include/sound/simple_card_utils.h
index d5d88bb..7846467 100644
--- a/include/sound/simple_card_utils.h
+++ b/include/sound/simple_card_utils.h
@@ -69,5 +69,7 @@ int asoc_simple_card_init_dai(struct snd_soc_dai *dai,
                              struct asoc_simple_dai *simple_dai);
 
 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);
 
 #endif /* __SIMPLE_CARD_CORE_H */
diff --git a/sound/soc/generic/simple-card-utils.c 
b/sound/soc/generic/simple-card-utils.c
index 2524f21..b8977ca 100644
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -252,3 +252,22 @@ int asoc_simple_card_canonicalize_dailink(struct 
snd_soc_dai_link *dai_link)
        return 0;
 }
 EXPORT_SYMBOL_GPL(asoc_simple_card_canonicalize_dailink);
+
+int asoc_simple_card_canonicalize_cpu(struct snd_soc_dai_link *dai_link,
+                                     int is_single_links)
+{
+       /*
+        * In soc_bind_dai_link() will check cpu name after
+        * of_node matching if dai_link has cpu_dai_name.
+        * but, it will never match if name was created by
+        * fmt_single_name() remove cpu_dai_name if cpu_args
+        * was 0. See:
+        *      fmt_single_name()
+        *      fmt_multiple_name()
+        */
+       if (is_single_links)
+               dai_link->cpu_dai_name = NULL;
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_card_canonicalize_cpu);
-- 
1.9.1

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