[PATCH] ASoC: soc-pcm: fix checks for multi-cpu FE dailinks

[Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>]

soc_dpcm_fe_runtime_update() is called for all dailinks, and we want
to first discard all back-ends, then deal with front-ends.

The existing code first reports an error with multi-cpu front-ends,
and that check needs to be moved after we know that we are dealing
with a front-end.

BugLink: https://github.com/thesofproject/linux/issues/1970
Fixes: 6e1276a5e613d ('ASoC: Return error if the function does not
support multi-cpu')
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
---
 sound/soc/soc-pcm.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 2c114b4542ce..c517064f5391 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -2630,15 +2630,15 @@ static int soc_dpcm_fe_runtime_update(struct snd_soc_pcm_runtime *fe, int new)
 	int count, paths;
 	int ret;
 
+	if (!fe->dai_link->dynamic)
+		return 0;
+
 	if (fe->num_cpus > 1) {
 		dev_err(fe->dev,
 			"%s doesn't support Multi CPU yet\n", __func__);
 		return -EINVAL;
 	}
 
-	if (!fe->dai_link->dynamic)
-		return 0;
-
 	/* only check active links */
 	if (!snd_soc_dai_active(asoc_rtd_to_cpu(fe, 0)))
 		return 0;
-- 
2.20.1