ALSA: ump: Correct wrong byte size at converting a UMP System message

A wrong size for UMP_SYSTEM_STATUS_MIDI_TIME_CODE and case
UMP_SYSTEM_STATUS_SONG_SELECT was reported at converting to the legacy
MIDI 1.0 stream.  This patch corrects the value.

Fixes: 0b5288f5fe63 ("ALSA: ump: Add legacy raw MIDI support")
Link: https://lore.kernel.org/r/20230628094352.15754-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/core/ump_convert.c b/sound/core/ump_convert.c
index fb61df4..de04799 100644 (file)
--- a/sound/core/ump_convert.c
+++ b/sound/core/ump_convert.c
@@ -73,7 +73,7 @@ static int cvt_ump_system_to_legacy(u32 data, unsigned char *buf)
        case UMP_SYSTEM_STATUS_MIDI_TIME_CODE:
        case UMP_SYSTEM_STATUS_SONG_SELECT:
                buf[1] = (data >> 8) & 0x7f;
-               return 1;
+               return 2;
        case UMP_SYSTEM_STATUS_SONG_POSITION:
                buf[1] = (data >> 8) & 0x7f;
                buf[2] = data & 0x7f;