[017/119] sound: rawmidi: disable active-sensing-on-close by default

[Greg KH]

2.6.31-stable review patch.  If anyone has any objections, please let us know.

------------------
From: Clemens Ladisch <clemens@xxxxxxxxxx>

commit 2d4b842014dc76a81abced47ef27177eedb9deba upstream.

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@xxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>

---
 sound/core/rawmidi.c      |    2 +-
 sound/core/seq/seq_midi.c |    1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -274,7 +274,7 @@ static int open_substream(struct snd_raw
 		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++;
--- a/sound/core/seq/seq_midi.c
+++ b/sound/core/seq/seq_midi.c
@@ -236,6 +236,7 @@ static int midisynth_use(void *private_d
 	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;


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