[PATCH v2 1/2] ASoC: soc-core: defer card registration if codec component is missing

[Jerome Brunet]

Like cpus and platforms, defer sound card initialization if the codec
component is missing when initializing the dai_link

Signed-off-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
---
 sound/soc/soc-core.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 358f1fbf9a30..0ec1d7a59b24 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1064,12 +1064,20 @@ static int soc_init_dai_link(struct snd_soc_card *card,
 				link->name);
 			return -EINVAL;
 		}
+
 		/* Codec DAI name must be specified */
 		if (!codec->dai_name) {
 			dev_err(card->dev, "ASoC: codec_dai_name not set for %s\n",
 				link->name);
 			return -EINVAL;
 		}
+
+		/*
+		 * Defer card registration if codec component is not added to
+		 * component list.
+		 */
+		if (!soc_find_component(codec))
+			return -EPROBE_DEFER;
 	}
 
 	/*
-- 
2.21.0