From bbf71b31596719c61d540513da3d8a3db20dad66 Mon Sep 17 00:00:00 2001
From: Rozhuk Ivan <rozhuk.im@gmail.com>
Date: Fri, 9 Aug 2024 21:52:17 +0300
Subject: [PATCH] sound: Fix SEQ_SYSEX() macro

Correct implementation also found in Linux's soundcard.h:
https://github.com/torvalds/linux/blob/master/include/uapi/linux/soundcard.h#L1178

seq_processevent() interprets event[1] as device number and does not
work properly with current SEQ_SYSEX() implementation.

Note: soundcard.h has its own funky style, which this commit follows

Reviewed by: imp, christos
Pull Request: https://github.com/freebsd/freebsd-src/pull/1374
---
 sys/sys/soundcard.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sys/sys/soundcard.h b/sys/sys/soundcard.h
index b5434b93021..304ae38c08d 100644
--- a/sys/sys/soundcard.h
+++ b/sys/sys/soundcard.h
@@ -1400,8 +1400,9 @@ void seqbuf_dump(void);	/* This function must be provided by programs */
 	int i, l=(len); if (l>6)l=6;\
 	_SEQ_NEEDBUF(8);\
 	_seqbuf[_seqbufptr] = EV_SYSEX;\
-	for(i=0;i<l;i++)_seqbuf[_seqbufptr+i+1] = (buf)[i];\
-	for(i=l;i<6;i++)_seqbuf[_seqbufptr+i+1] = 0xff;\
+	_seqbuf[_seqbufptr+1] = (dev);\
+	for(i=0;i<l;i++)_seqbuf[_seqbufptr+i+2] = (buf)[i];\
+	for(i=l;i<6;i++)_seqbuf[_seqbufptr+i+2] = 0xff;\
 	_SEQ_ADVBUF(8);}
 
 #define SEQ_CHN_PRESSURE(dev, chn, pressure) \