ASoC: Don't call DAI registration for CODECs with no DAI

Otherwise we generate worrying (but benign) warnings for amps.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>

1 files changed, 8 insertions, 5 deletions

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 7093c1787128..65352c7d4b7f 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3122,10 +3122,12 @@ int snd_soc_register_codec(struct device *dev,
                 fixup_codec_formats(&dai_drv[i].capture);
         }
 
-        /* register DAIs */
-        ret = snd_soc_register_dais(dev, dai_drv, num_dai);
-        if (ret < 0)
+        /* register any DAIs */
+        if (num_dai) {
+                ret = snd_soc_register_dais(dev, dai_drv, num_dai);
+                if (ret < 0)
                         goto error;
+        }
 
         mutex_lock(&client_mutex);
         list_add(&codec->list, &codec_list);
@@ -3164,8 +3166,9 @@ void snd_soc_unregister_codec(struct device *dev)
         return;
 
 found:
-        for (i = 0; i < codec->num_dai; i++)
-                snd_soc_unregister_dai(dev);
+        if (codec->num_dai)
+                for (i = 0; i < codec->num_dai; i++)
+                        snd_soc_unregister_dai(dev);
 
         mutex_lock(&client_mutex);
         list_del(&codec->list);