1 files changed, 79 insertions, 20 deletions

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index ffae370b45d..717db0e6499 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -780,30 +780,54 @@ static int soc_resume(struct platform_device *pdev)
 #define soc_resume	NULL
 #endif
 
-/* probes a new socdev */
-static int soc_probe(struct platform_device *pdev)
-{
-	int ret = 0, i;
-	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-	struct snd_soc_card *card = socdev->card;
-	struct snd_soc_platform *platform = card->platform;
-	struct snd_soc_codec_device *codec_dev = socdev->codec_dev;
-
-	/* Bodge while we push things out of socdev */
-	card->socdev = socdev;
+static void snd_soc_instantiate_card(struct snd_soc_card *card)
+{
+	struct platform_device *pdev = container_of(card->dev,
+						    struct platform_device,
+						    dev);
+	struct snd_soc_codec_device *codec_dev = card->socdev->codec_dev;
+	struct snd_soc_platform *platform;
+	struct snd_soc_dai *dai;
+	int i, found, ret;
+
+	if (card->instantiated)
+		return;
+
+	found = 0;
+	list_for_each_entry(platform, &platform_list, list)
+		if (card->platform == platform) {
+			found = 1;
+			break;
+		}
+	if (!found) {
+		dev_dbg(card->dev, "Platform %s not registered\n",
+			card->platform->name);
+		return;
+	}
 
-	/* Bodge while we unpick instantiation */
-	card->dev = &pdev->dev;
-	ret = snd_soc_register_card(card);
-	if (ret != 0) {
-		dev_err(&pdev->dev, "Failed to register card\n");
-		return ret;
+	for (i = 0; i < card->num_links; i++) {
+		found = 0;
+		list_for_each_entry(dai, &dai_list, list)
+			if (card->dai_link[i].cpu_dai == dai) {
+				found = 1;
+				break;
+			}
+		if (!found) {
+			dev_dbg(card->dev, "DAI %s not registered\n",
+				card->dai_link[i].cpu_dai->name);
+			return;
+		}
 	}
 
+	/* Note that we do not current check for codec components */
+
+	dev_dbg(card->dev, "All components present, instantiating\n");
+
+	/* Found everything, bring it up */
 	if (card->probe) {
 		ret = card->probe(pdev);
 		if (ret < 0)
-			return ret;
+			return;
 	}
 
 	for (i = 0; i < card->num_links; i++) {
@@ -834,7 +858,9 @@ static int soc_probe(struct platform_device *pdev)
 	INIT_WORK(&card->deferred_resume_work, soc_resume_deferred);
 #endif
 
-	return 0;
+	card->instantiated = 1;
+
+	return;
 
 platform_err:
 	if (codec_dev->remove)
@@ -849,8 +875,38 @@ cpu_dai_err:
 
 	if (card->remove)
 		card->remove(pdev);
+}
 
-	return ret;
+/*
+ * Attempt to initialise any uninitalised cards.  Must be called with
+ * client_mutex.
+ */
+static void snd_soc_instantiate_cards(void)
+{
+	struct snd_soc_card *card;
+	list_for_each_entry(card, &card_list, list)
+		snd_soc_instantiate_card(card);
+}
+
+/* probes a new socdev */
+static int soc_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+	struct snd_soc_card *card = socdev->card;
+
+	/* Bodge while we push things out of socdev */
+	card->socdev = socdev;
+
+	/* Bodge while we unpick instantiation */
+	card->dev = &pdev->dev;
+	ret = snd_soc_register_card(card);
+	if (ret != 0) {
+		dev_err(&pdev->dev, "Failed to register card\n");
+		return ret;
+	}
+
+	return 0;
 }
 
 /* removes a socdev */
@@ -1994,6 +2050,7 @@ static int snd_soc_register_card(struct snd_soc_card *card)
 
 	mutex_lock(&client_mutex);
 	list_add(&card->list, &card_list);
+	snd_soc_instantiate_cards();
 	mutex_unlock(&client_mutex);
 
 	dev_dbg(card->dev, "Registered card '%s'\n", card->name);
@@ -2039,6 +2096,7 @@ int snd_soc_register_dai(struct snd_soc_dai *dai)
 
 	mutex_lock(&client_mutex);
 	list_add(&dai->list, &dai_list);
+	snd_soc_instantiate_cards();
 	mutex_unlock(&client_mutex);
 
 	pr_debug("Registered DAI '%s'\n", dai->name);
@@ -2117,6 +2175,7 @@ int snd_soc_register_platform(struct snd_soc_platform *platform)
 
 	mutex_lock(&client_mutex);
 	list_add(&platform->list, &platform_list);
+	snd_soc_instantiate_cards();
 	mutex_unlock(&client_mutex);
 
 	pr_debug("Registered platform '%s'\n", platform->name);