- if (rfile)
- rfile->input = rfile->output = NULL;
- mutex_lock(®ister_mutex);
- rmidi = snd_rawmidi_search(card, device);
- mutex_unlock(®ister_mutex);
- if (rmidi == NULL) {
- err = -ENODEV;
- goto __error1;
- }
- if (!try_module_get(rmidi->card->module)) {
- err = -EFAULT;
- goto __error1;
- }
- if (!(mode & SNDRV_RAWMIDI_LFLG_NOOPENLOCK))
- mutex_lock(&rmidi->open_mutex);
- if (mode & SNDRV_RAWMIDI_LFLG_INPUT) {
- if (!(rmidi->info_flags & SNDRV_RAWMIDI_INFO_INPUT)) {
- err = -ENXIO;
- goto __error;
- }
- if (subdevice >= 0 && (unsigned int)subdevice >= rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substream_count) {
- err = -ENODEV;
- goto __error;
- }
- if (rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substream_opened >=
- rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substream_count) {
- err = -EAGAIN;
- goto __error;
- }
- }
- if (mode & SNDRV_RAWMIDI_LFLG_OUTPUT) {
- if (!(rmidi->info_flags & SNDRV_RAWMIDI_INFO_OUTPUT)) {
- err = -ENXIO;
- goto __error;
- }
- if (subdevice >= 0 && (unsigned int)subdevice >= rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substream_count) {
- err = -ENODEV;
- goto __error;
- }
- if (rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substream_opened >=
- rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substream_count) {
- err = -EAGAIN;
- goto __error;
+ if (!(rmidi->info_flags & info_flags[stream]))
+ return -ENXIO;
+ if (subdevice >= 0 && subdevice >= s->substream_count)
+ return -ENODEV;
+
+ list_for_each_entry(substream, &s->substreams, list) {
+ if (substream->opened) {
+ if (stream == SNDRV_RAWMIDI_STREAM_INPUT ||
+ !(mode & SNDRV_RAWMIDI_LFLG_APPEND) ||
+ !substream->append)
+ continue;