[PATCH 6.12.y 1/2] ALSA: seq: Notify client and port info changes

[Sasha Levin <sashal@kernel.org>]

From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit b8e49e24cdba27a0810a0988e810e2c68f2033cb ]

It was supposed to be notified when a sequencer client info and a port
info has changed (via SNDRV_SEQ_EVENT_CLIENT_CHANGE and
SNDRV_SEQ_EVENT_PORT_CHANGE event, respectively), and there are
already helper functions.  But those aren't really sent from the
driver so far, except for the recent support of UMP, simply due to the
lack of implementations.

This patch adds the missing notifications at updating the client and
the port info.  The formerly added notification for UMP is dropped
because it's handled now in the port info side.

Reported-by: Mark Lentczner <mark@glyphic.com>
Link: https://lore.kernel.org/CAPnksqRok7xGa4bxq9WWimVV=28-7_j628OmrWLS=S0=hzaTHQ@mail.gmail.com
Link: https://patch.msgid.link/20241128074734.32165-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Stable-dep-of: 92429ca999db ("ALSA: seq: Fix UMP group 16 filtering")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/core/seq/seq_clientmgr.c  | 7 +++++++
 sound/core/seq/seq_ump_client.c | 2 --
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
index 9e59a97f47472..80b73bb199edd 100644
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -1329,6 +1329,10 @@ static int snd_seq_ioctl_set_client_info(struct snd_seq_client *client,
 		client->midi_version = client_info->midi_version;
 	memcpy(client->event_filter, client_info->event_filter, 32);
 	client->group_filter = client_info->group_filter;
+
+	/* notify the change */
+	snd_seq_system_client_ev_client_change(client->number);
+
 	return 0;
 }
 
@@ -1452,6 +1456,9 @@ static int snd_seq_ioctl_set_port_info(struct snd_seq_client *client, void *arg)
 	if (port) {
 		snd_seq_set_port_info(port, info);
 		snd_seq_port_unlock(port);
+		/* notify the change */
+		snd_seq_system_client_ev_port_change(info->addr.client,
+						     info->addr.port);
 	}
 	return 0;
 }
diff --git a/sound/core/seq/seq_ump_client.c b/sound/core/seq/seq_ump_client.c
index e956f17f37928..27c4dd9940ffb 100644
--- a/sound/core/seq/seq_ump_client.c
+++ b/sound/core/seq/seq_ump_client.c
@@ -272,8 +272,6 @@ static void update_port_infos(struct seq_ump_client *client)
 						new);
 		if (err < 0)
 			continue;
-		/* notify to system port */
-		snd_seq_system_client_ev_port_change(client->seq_client, i);
 	}
 }
 
-- 
2.53.0