[alsa-devel] [PATCH] ASoC: pcm: Require both CODEC and CPU support when declaring stream caps

[Mark Brown]

When declaring playback and capture capabilities check for both CODEC
side and CPU side support rather than only checking for CODEC side
support.  While it is unusual some CPUs do have unidirectional DAIs.

Signed-off-by: Mark Brown <broonie at kernel.org>
---
 sound/soc/soc-pcm.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 73bb8ee..a9fddf0 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -2011,9 +2011,11 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
 		if (cpu_dai->driver->capture.channels_min)
 			capture = 1;
 	} else {
-		if (codec_dai->driver->playback.channels_min)
+		if (codec_dai->driver->playback.channels_min &&
+		    cpu_dai->driver->playback.channels_min)
 			playback = 1;
-		if (codec_dai->driver->capture.channels_min)
+		if (codec_dai->driver->capture.channels_min &&
+		    cpu_dai->driver->capture.channels_min)
 			capture = 1;
 	}
 
-- 
1.7.10.4