[patch 089/108] sound: seq_midi_event: fix decoding of (N)RPN events

Greg KH
2009-07-01T01:13:10Z

[-- Attachment #1: sound-seq_midi_event-fix-decoding-of-rpn-events.patch --]
[-- Type: text/plain, Size: 1390 bytes --]

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

------------------

From: Clemens Ladisch <clemens@ladisch.de>

commit 6423f9ea8035138d70bae1a278d3b57b743f8b3e upstream.

When decoding (N)RPN sequencer events into raw MIDI commands, the
extra_decode_xrpn() function had accidentally swapped the MSB and LSB
controller values of both the parameter number and the data value.

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

---
sound/core/seq/seq_midi_event.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

--- a/sound/core/seq/seq_midi_event.c
+++ b/sound/core/seq/seq_midi_event.c
@@ -504,10 +504,10 @@ static int extra_decode_xrpn(struct snd_
if (dev->nostat && count < 12)
return -ENOMEM;
cmd = MIDI_CMD_CONTROL|(ev->data.control.channel & 0x0f);
- bytes[0] = ev->data.control.param & 0x007f;
- bytes[1] = (ev->data.control.param & 0x3f80) >> 7;
- bytes[2] = ev->data.control.value & 0x007f;
- bytes[3] = (ev->data.control.value & 0x3f80) >> 7;
+ bytes[0] = (ev->data.control.param & 0x3f80) >> 7;
+ bytes[1] = ev->data.control.param & 0x007f;
+ bytes[2] = (ev->data.control.value & 0x3f80) >> 7;
+ bytes[3] = ev->data.control.value & 0x007f;
if (cmd != dev->lastcmd && !dev->nostat) {
if (count < 9)
return -ENOMEM;