ASoC: soc-pcm: check symmetry after hw_params

hw_params may be fixup by be_hw_params_fixup, calling
soc_pcm_params_symmetry() before hw_params will have issue
if there is hw_params changes in be_hw_params_fixup.

For example, with following use case
1. a dai-link which is able to convert sample rate on BE side
2. set BE playback and capture sample rate to 44100Hz
3. play a 48000Hz audio stream with this dai-link
4. record from this dai-link with 44100Hz sample rate

Got following error message when record starts
[  495.013527]  be_link_ak4613: ASoC: unmatched rate symmetry: 48000 - 44100
[  495.021729]  be_link_ak4613: ASoC: hw_params BE failed -22
[  495.028589]  rsnd_link0: ASoC: hw_params BE failed -22

Because in soc_pcm_hw_params(), FE rate is still having value before
it is fixup by be_hw_params_fixup(), when soc_pcm_params_symmetry() checks
symmetry, thus soc_pcm_params_symmetry() complains about the unmatched rate
between the active stream and the new stream tries to start.

This patch moves soc_pcm_params_symmetry() after hw_params to resolve the
above issue.

Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 4 insertions, 5 deletions

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 94b88b897c3b..f11421f08065 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -855,11 +855,6 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
         int i, ret = 0;
 
         mutex_lock_nested(&rtd->pcm_mutex, rtd->pcm_subclass);
-
-        ret = soc_pcm_params_symmetry(substream, params);
-        if (ret)
-                goto out;
-
         if (rtd->dai_link->ops && rtd->dai_link->ops->hw_params) {
                 ret = rtd->dai_link->ops->hw_params(substream, params);
                 if (ret < 0) {
@@ -930,6 +925,10 @@ static int soc_pcm_hw_params(struct snd_pcm_substream *substream,
         cpu_dai->sample_bits =
                 snd_pcm_format_physical_width(params_format(params));
 
+
+        ret = soc_pcm_params_symmetry(substream, params);
+        if (ret)
+                goto platform_err;
 out:
         mutex_unlock(&rtd->pcm_mutex);
         return ret;