[ALSA] seq_midi_event: prevent running status after system messages

Reset the event type after encoding a system message to prevent any following data bytes from being interpreted as data for a running status system message, which is not allowed in MIDI. Signed-off-by: Clemens Ladisch <[email protected]> Signed-off-by: Jaroslav Kysela <[email protected]>
klaby · Oct 16, 2007 · 0b664f7 · 0b664f7
1 parent 394d051
commit 0b664f7
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/sound/core/seq/seq_midi_event.c b/sound/core/seq/seq_midi_event.c
@@ -283,6 +283,8 @@ int snd_midi_event_encode_byte(struct snd_midi_event *dev, int c,
 		ev->flags |= SNDRV_SEQ_EVENT_LENGTH_FIXED;
 		if (status_event[dev->type].encode) /* set data values */
 			status_event[dev->type].encode(dev, ev);
+		if (dev->type >= ST_SPECIAL)
+			dev->type = ST_INVALID;
 		rc = 1;
 	} else 	if (dev->type == ST_SYSEX) {
 		if (c == MIDI_CMD_COMMON_SYSEX_END ||