I am sorry for wrong subject. It should be [PATCH v2 1/4].

This patch is to remove the 'SUBSTREAM_TYPE','PCM_TX' and 'PCM_RX' definition.

There is no need to redefine SNDRV_PCM_STREAM_PLAYBACK as PCM_TX, the SUBSTREAM_TYPE(substream) can be deleted too, the playback or record can be judged by 'if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)' directly rather than 'if (PCM_TX == stype)', which makes the codes easy to read.

Signed-off-by: Wan ZongShunmcuos.com@gmail.com

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sound/soc/nuc900/nuc900-ac97.c  |    6 +++---  sound/soc/nuc900/nuc900-auido.h |    4 ----  sound/soc/nuc900/nuc900-pcm.c   |   18 ++++++++++--------  3 files changed, 13 insertions(+), 15 deletions(-)