- substream->ffile = NULL;
- snd_pcm_remove_file(str, pcm_file);
- snd_pcm_release_substream(substream);
- kfree(pcm_file);
+ if (substream->pcm_release) {
+ substream->pcm_release(substream);
+ substream->pcm_release = NULL;
+ }
+ snd_pcm_detach_substream(substream);
+}
+
+int snd_pcm_open_substream(struct snd_pcm *pcm, int stream,
+ struct file *file,
+ struct snd_pcm_substream **rsubstream)
+{
+ struct snd_pcm_substream *substream;
+ int err;
+
+ err = snd_pcm_attach_substream(pcm, stream, file, &substream);
+ if (err < 0)
+ return err;
+ substream->no_mmap_ctrl = 0;
+ err = snd_pcm_hw_constraints_init(substream);
+ if (err < 0) {
+ snd_printd("snd_pcm_hw_constraints_init failed\n");
+ goto error;
+ }
+
+ if ((err = substream->ops->open(substream)) < 0)
+ goto error;
+
+ substream->hw_opened = 1;
+
+ err = snd_pcm_hw_constraints_complete(substream);
+ if (err < 0) {
+ snd_printd("snd_pcm_hw_constraints_complete failed\n");
+ goto error;
+ }
+
+ *rsubstream = substream;