diff mbox

[3/5] ASoC: soc_bind_dai_link() directly returns success for a bound DAI link

Message ID 06e80a8f889459898722784788581647914dce9b.1449036307.git.mengdong.lin@linux.intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

mengdong.lin@linux.intel.com Dec. 2, 2015, 6:11 a.m. UTC 
From: Mengdong Lin <mengdong.lin@linux.intel.com>

This function will return success immediately for a bound DAI link.
No need to look for the cpu/codec DAIs again.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
diff mbox

Patch

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index c504d04..9dada21 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -960,6 +960,19 @@  static struct snd_soc_dai *snd_soc_find_dai(
 	return NULL;
 }
 
+static bool soc_is_dai_link_bound(struct snd_soc_card *card,
+		struct snd_soc_dai_link *dai_link)
+{
+	struct snd_soc_pcm_runtime *rtd;
+
+	list_for_each_entry(rtd, &card->rtd_list, list) {
+		if (rtd->dai_link == dai_link)
+			return true;
+	}
+
+	return false;
+}
+
 static int soc_bind_dai_link(struct snd_soc_card *card,
 	struct snd_soc_dai_link *dai_link)
 {
@@ -977,6 +990,12 @@  static int soc_bind_dai_link(struct snd_soc_card *card,
 	if (!rtd)
 		return -ENOMEM;
 
+	if (soc_is_dai_link_bound(card, dai_link)) {
+		dev_dbg(card->dev, "ASoC: dai link %s already bound\n",
+			dai_link->name);
+		return 0;
+	}
+
 	cpu_dai_component.name = dai_link->cpu_name;
 	cpu_dai_component.of_node = dai_link->cpu_of_node;
 	cpu_dai_component.dai_name = dai_link->cpu_dai_name;