6.6-stable review patch. If anyone has any objections, please let me know.
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From: Takashi Iwai tiwai@suse.de
[ Upstream commit 310fa3ec2859f1c094e6e9b5d2e1ca51738c409a ]
At converting between the legacy event and UMP, the parameters for MIDI Song Position Pointer are incorrectly stored. It should have been LSB -> MSB order while it stored in MSB -> LSB order. This patch corrects the ordering.
Fixes: e9e02819a98a ("ALSA: seq: Automatic conversion of UMP events") Link: https://lore.kernel.org/r/20240531075110.3250-1-tiwai@suse.de Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- sound/core/seq/seq_ump_convert.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/sound/core/seq/seq_ump_convert.c b/sound/core/seq/seq_ump_convert.c index 903a644b80e25..9bfba69b2a709 100644 --- a/sound/core/seq/seq_ump_convert.c +++ b/sound/core/seq/seq_ump_convert.c @@ -157,7 +157,7 @@ static void ump_system_to_one_param_ev(const union snd_ump_midi1_msg *val, static void ump_system_to_songpos_ev(const union snd_ump_midi1_msg *val, struct snd_seq_event *ev) { - ev->data.control.value = (val->system.parm1 << 7) | val->system.parm2; + ev->data.control.value = (val->system.parm2 << 7) | val->system.parm1; }
/* Encoders for 0xf0 - 0xff */ @@ -752,8 +752,8 @@ static int system_2p_ev_to_ump_midi1(const struct snd_seq_event *event, unsigned char status) { data->system.status = status; - data->system.parm1 = (event->data.control.value >> 7) & 0x7f; - data->system.parm2 = event->data.control.value & 0x7f; + data->system.parm1 = event->data.control.value & 0x7f; + data->system.parm2 = (event->data.control.value >> 7) & 0x7f; return 1; }