diff options
| author | Takashi Iwai <tiwai@suse.de> | 2025-01-10 18:59:34 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2025-01-12 15:12:20 +0300 |
| commit | bdf46443f350dd5d226fd528a5a5954ff762f591 (patch) | |
| tree | ae3e0c2b0c92a107b02f0f77237a2ab75259055f /sound/core | |
| parent | 7579790915387396e26041ceafbc07348658edef (diff) | |
| download | linux-bdf46443f350dd5d226fd528a5a5954ff762f591.tar.xz | |
ALSA: rawmidi: Expose the tied device number in info ioctl
The UMP legacy rawmidi is derived from the UMP rawmidi, but currently
there is no way to know which device is involved in other side.
This patch extends the rawmidi info ioctl to show the tied device
number. As default it stores -1, indicating that no tied device.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250110155943.31578-2-tiwai@suse.de
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/rawmidi.c | 2 | ||||
| -rw-r--r-- | sound/core/ump.c | 3 |
2 files changed, 5 insertions, 0 deletions
diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c index 348ce1b7725e..858878fe487a 100644 --- a/sound/core/rawmidi.c +++ b/sound/core/rawmidi.c @@ -635,6 +635,7 @@ static int snd_rawmidi_info(struct snd_rawmidi_substream *substream, info->subdevices_count = substream->pstr->substream_count; info->subdevices_avail = (substream->pstr->substream_count - substream->pstr->substream_opened); + info->tied_device = rmidi->tied_device; return 0; } @@ -1834,6 +1835,7 @@ int snd_rawmidi_init(struct snd_rawmidi *rmidi, INIT_LIST_HEAD(&rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams); INIT_LIST_HEAD(&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams); rmidi->info_flags = info_flags; + rmidi->tied_device = SNDRV_RAWMIDI_DEVICE_UNKNOWN; if (id != NULL) strscpy(rmidi->id, id, sizeof(rmidi->id)); diff --git a/sound/core/ump.c b/sound/core/ump.c index 9198bff4768c..0bfab84eaafb 100644 --- a/sound/core/ump.c +++ b/sound/core/ump.c @@ -1314,6 +1314,9 @@ int snd_ump_attach_legacy_rawmidi(struct snd_ump_endpoint *ump, ump->legacy_rmidi = rmidi; update_legacy_names(ump); + rmidi->tied_device = ump->core.device; + ump->core.tied_device = rmidi->device; + ump_dbg(ump, "Created a legacy rawmidi #%d (%s)\n", device, id); return 0; } |