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Diffstat (limited to 'sound/core/rawmidi.c')
-rw-r--r--sound/core/rawmidi.c42
1 files changed, 20 insertions, 22 deletions
diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index c0adc14c91f0..70d6f25ba526 100644
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -248,7 +248,8 @@ static int assign_substream(struct snd_rawmidi *rmidi, int subdevice,
list_for_each_entry(substream, &s->substreams, list) {
if (substream->opened) {
if (stream == SNDRV_RAWMIDI_STREAM_INPUT ||
- !(mode & SNDRV_RAWMIDI_LFLG_APPEND))
+ !(mode & SNDRV_RAWMIDI_LFLG_APPEND) ||
+ !substream->append)
continue;
}
if (subdevice < 0 || subdevice == substream->number) {
@@ -266,17 +267,21 @@ static int open_substream(struct snd_rawmidi *rmidi,
{
int err;
- err = snd_rawmidi_runtime_create(substream);
- if (err < 0)
- return err;
- err = substream->ops->open(substream);
- if (err < 0)
- return err;
- substream->opened = 1;
- if (substream->use_count++ == 0)
+ if (substream->use_count == 0) {
+ err = snd_rawmidi_runtime_create(substream);
+ if (err < 0)
+ return err;
+ err = substream->ops->open(substream);
+ if (err < 0) {
+ snd_rawmidi_runtime_free(substream);
+ return err;
+ }
+ substream->opened = 1;
substream->active_sensing = 0;
- if (mode & SNDRV_RAWMIDI_LFLG_APPEND)
- substream->append = 1;
+ if (mode & SNDRV_RAWMIDI_LFLG_APPEND)
+ substream->append = 1;
+ }
+ substream->use_count++;
rmidi->streams[substream->stream].substream_opened++;
return 0;
}
@@ -297,27 +302,27 @@ static int rawmidi_open_priv(struct snd_rawmidi *rmidi, int subdevice, int mode,
SNDRV_RAWMIDI_STREAM_INPUT,
mode, &sinput);
if (err < 0)
- goto __error;
+ return err;
}
if (mode & SNDRV_RAWMIDI_LFLG_OUTPUT) {
err = assign_substream(rmidi, subdevice,
SNDRV_RAWMIDI_STREAM_OUTPUT,
mode, &soutput);
if (err < 0)
- goto __error;
+ return err;
}
if (sinput) {
err = open_substream(rmidi, sinput, mode);
if (err < 0)
- goto __error;
+ return err;
}
if (soutput) {
err = open_substream(rmidi, soutput, mode);
if (err < 0) {
if (sinput)
close_substream(rmidi, sinput, 0);
- goto __error;
+ return err;
}
}
@@ -325,13 +330,6 @@ static int rawmidi_open_priv(struct snd_rawmidi *rmidi, int subdevice, int mode,
rfile->input = sinput;
rfile->output = soutput;
return 0;
-
- __error:
- if (sinput && sinput->runtime)
- snd_rawmidi_runtime_free(sinput);
- if (soutput && soutput->runtime)
- snd_rawmidi_runtime_free(soutput);
- return err;
}
/* called from sound/core/seq/seq_midi.c */