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[3/3] ALSA: bebob: enable to deliver MIDI messages for multiple ports

Message ID 20210321032831.340278-4-o-takashi@sakamocchi.jp
State Accepted
Commit d2b6f15bc18ac8fbce25398290774c21f5b2cd44
Headers show
Series ALSA: bebob: enable MIDI message transmission for multiple ports | expand

Commit Message

Takashi Sakamoto March 21, 2021, 3:28 a.m. UTC 
Current implementation of bebob driver doesn't correctly handle the case
that the device has multiple MIDI ports. The cause is the number of MIDI
conformant data channels is passed to AM824 data block processing layer.

This commit fixes the bug.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
---
 sound/firewire/bebob/bebob_stream.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)
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Patch

diff --git a/sound/firewire/bebob/bebob_stream.c b/sound/firewire/bebob/bebob_stream.c
index 23579a73e038..b612ee3e33b6 100644
--- a/sound/firewire/bebob/bebob_stream.c
+++ b/sound/firewire/bebob/bebob_stream.c
@@ -517,20 +517,22 @@  int snd_bebob_stream_init_duplex(struct snd_bebob *bebob)
 static int keep_resources(struct snd_bebob *bebob, struct amdtp_stream *stream,
 			  unsigned int rate, unsigned int index)
 {
-	struct snd_bebob_stream_formation *formation;
+	unsigned int pcm_channels;
+	unsigned int midi_ports;
 	struct cmp_connection *conn;
 	int err;
 
 	if (stream == &bebob->tx_stream) {
-		formation = bebob->tx_stream_formations + index;
+		pcm_channels = bebob->tx_stream_formations[index].pcm;
+		midi_ports = bebob->midi_input_ports;
 		conn = &bebob->out_conn;
 	} else {
-		formation = bebob->rx_stream_formations + index;
+		pcm_channels = bebob->rx_stream_formations[index].pcm;
+		midi_ports = bebob->midi_output_ports;
 		conn = &bebob->in_conn;
 	}
 
-	err = amdtp_am824_set_parameters(stream, rate, formation->pcm,
-					 formation->midi, false);
+	err = amdtp_am824_set_parameters(stream, rate, pcm_channels, midi_ports, false);
 	if (err < 0)
 		return err;