The codec_dai and the cpu_dai are from rtd. When the rtd->dais[0]
or rtd->dais[rtd->num_cpus] is None, it could lead to the use of
null pointer in the snd_soc_dai_stream_valid(). So it might be better
to add the check before the use of snd_soc_dai_stream_valid().
Fixes: 467fece ("ASoC: soc-dai: move snd_soc_dai_stream_valid() to soc-dai.c")
Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
---
sound/soc/soc-compress.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c
index b4f5935..67c3df1 100644
--- a/sound/soc/soc-compress.c
+++ b/sound/soc/soc-compress.c
@@ -535,12 +535,14 @@ int snd_soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num)
}
/* check client and interface hw capabilities */
- if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) &&
- snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK))
- playback = 1;
- if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) &&
- snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE))
- capture = 1;
+ if (codec_dai && cpu_dai) {
+ if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) &&
+ snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK))
+ playback = 1;
+ if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) &&
+ snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE))
+ capture = 1;
+ }
/*
* Compress devices are unidirectional so only one of the directions
--
2.7.4
