1 files changed, 79 insertions, 20 deletions

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index ffae370b45df..717db0e6499b 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);