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-rw-r--r--sound/core/oss/pcm_oss.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index f5ff4f4..472fce0 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -2228,6 +2228,8 @@ static int snd_pcm_oss_open_file(struct file *file,
for (idx = 0; idx < 2; idx++) {
if (setup[idx].disable)
continue;
+ if (! pcm->streams[idx].substream_count)
+ continue; /* no matching substream */
if (idx == SNDRV_PCM_STREAM_PLAYBACK) {
if (! (f_mode & FMODE_WRITE))
continue;
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