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

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.

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>
BugLink: https://github.com/thesofproject/linux/issues/1970
Link: https://lore.kernel.org/r/20200612203507.25621-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 2c114b4..c517064 100644 (file)
--- 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;