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-rw-r--r--include/sound/pcm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index e1bad11..6a18765 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -413,6 +413,7 @@ struct snd_pcm_substream {
#endif
/* misc flags */
unsigned int hw_opened: 1;
+ unsigned int hw_no_buffer: 1; /* substream may not have a buffer */
};
#define SUBSTREAM_BUSY(substream) ((substream)->ref_count > 0)