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ASoC: dpcm: don't merge format from invalid codec dai 

When merging codec formats, dpcm_runtime_base_format() should skip
the codecs which are not supporting the current stream direction.

At the moment, if a BE link has more than one codec, and only one
of these codecs has no capture DAI, it becomes impossible to start
a capture stream because the merged format would be 0.

Skipping invalid codec DAI solves the problem.

Fixes: b073ed4e21 ("ASoC: soc-pcm: DPCM cares BE format")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
This commit is contained in:
Jerome Brunet 2018-06-27 17:36:38 +02:00 committed by Mark Brown
parent b66c9b911f
commit 4febced15a
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GPG Key ID: 24D68B725D5487D0
1 changed files with 8 additions and 0 deletions
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8
sound/soc/soc-pcm.c
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@ -1694,6 +1694,14 @@ static u64 dpcm_runtime_base_format(struct snd_pcm_substream *substream)
int i;
for (i = 0; i < be->num_codecs; i++) {
/*
* Skip CODECs which don't support the current stream
* type. See soc_pcm_init_runtime_hw() for more details
*/
if (!snd_soc_dai_stream_valid(be->codec_dais[i],
stream))
continue;
codec_dai_drv = be->codec_dais[i]->driver;
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
codec_stream = &codec_dai_drv->playback;