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| author | Takashi Iwai <tiwai@suse.de> | 2006-03-27 16:40:49 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2006-03-31 17:58:59 +0200 |
| commit | 3bf75f9b90c981f18f27a0d35a44f488ab68c8ea (patch) | |
| tree | 9284c90f09ce38fc3bb2ebc46624ddf3db09b526 /sound/core/pcm.c | |
| parent | bf1bbb5a49eec51c30d341606885507b501b37e8 (diff) | |
| download | op-kernel-dev-3bf75f9b90c981f18f27a0d35a44f488ab68c8ea.zip op-kernel-dev-3bf75f9b90c981f18f27a0d35a44f488ab68c8ea.tar.gz | |
[ALSA] Clean up PCM codes (take 2)
- Clean up initialization and destruction of substream instance
Now snd_pcm_open_substream() alone does most initialization jobs.
Add pcm_release callback for cleaning up at snd_pcm_release_substream()
- Tidy up PCM oss code
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/pcm.c')
| -rw-r--r-- | sound/core/pcm.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/sound/core/pcm.c b/sound/core/pcm.c index 1e9878fe..5d7eb12 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -777,8 +777,9 @@ static void snd_pcm_tick_timer_func(unsigned long data) snd_pcm_tick_elapsed(substream); } -int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, - struct snd_pcm_substream **rsubstream) +int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, + struct file *file, + struct snd_pcm_substream **rsubstream) { struct snd_pcm_str * pstr; struct snd_pcm_substream *substream; @@ -793,7 +794,7 @@ int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, *rsubstream = NULL; snd_assert(pcm != NULL, return -ENXIO); pstr = &pcm->streams[stream]; - if (pstr->substream == NULL) + if (pstr->substream == NULL || pstr->substream_count == 0) return -ENODEV; card = pcm->card; @@ -807,8 +808,6 @@ int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, } up_read(&card->controls_rwsem); - if (pstr->substream_count == 0) - return -ENODEV; switch (stream) { case SNDRV_PCM_STREAM_PLAYBACK: if (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX) { @@ -874,12 +873,13 @@ int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, substream->runtime = runtime; substream->private_data = pcm->private_data; + substream->ffile = file; pstr->substream_opened++; *rsubstream = substream; return 0; } -void snd_pcm_release_substream(struct snd_pcm_substream *substream) +void snd_pcm_detach_substream(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime; substream->file = NULL; |
