sound: rawmidi: disable active-sensing-on-close by default

Sending an Active Sensing message when closing a port can interfere with
the following data if the port is reopened and a note-on is sent before
the device's timeout has elapsed.  Therefore, it is better to disable
this setting by default.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 2 insertions, 1 deletions

diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index 473247c..c0adc14 100644
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -274,7 +274,7 @@ static int open_substream(struct snd_rawmidi *rmidi,
 		return err;
 	substream->opened = 1;
 	if (substream->use_count++ == 0)
-		substream->active_sensing = 1;
+		substream->active_sensing = 0;
 	if (mode & SNDRV_RAWMIDI_LFLG_APPEND)
 		substream->append = 1;
 	rmidi->streams[substream->stream].substream_opened++;
diff --git a/sound/core/seq/seq_midi.c b/sound/core/seq/seq_midi.c
index 45cf5c1..ebaf1b5 100644
--- a/sound/core/seq/seq_midi.c
+++ b/sound/core/seq/seq_midi.c
@@ -237,6 +237,7 @@ static int midisynth_use(void *private_data, struct snd_seq_port_subscribe *info
 	memset(&params, 0, sizeof(params));
 	params.avail_min = 1;
 	params.buffer_size = output_buffer_size;
+	params.no_active_sensing = 1;
 	if ((err = snd_rawmidi_output_params(msynth->output_rfile.output, &params)) < 0) {
 		snd_rawmidi_kernel_release(&msynth->output_rfile);
 		return err;