ASoC: compress: Prevent multicodec for compressed stream

Multiple codecs does not make sense in the case of compressed
stream.

Exit with error if it happens.

Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
Tested-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c
index f96fb96b2678..27c06acce205 100644
--- a/sound/soc/soc-compress.c
+++ b/sound/soc/soc-compress.c
@@ -629,6 +629,11 @@ int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
         char new_name[64];
         int ret = 0, direction = 0;
 
+        if (rtd->num_codecs > 1) {
+                dev_err(rtd->card->dev, "Multicodec not supported for compressed stream\n");
+                return -EINVAL;
+        }
+
         /* check client and interface hw capabilities */
         snprintf(new_name, sizeof(new_name), "%s %s-%d",
                         rtd->dai_link->stream_name, codec_dai->name, num);