ALSA: seq: ump: Notify port changes to system port

For allowing applications to track the FB active changes, this patch
adds the notification from the system port at each time a FB change is
handled and the active flag or re-grouping happens.

Link: https://lore.kernel.org/r/20230612081054.17200-8-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/core/seq/seq_system.c b/sound/core/seq/seq_system.c
index 32c2d9b57751aaa62eb09b1ccb09bfd2c8a1e6e8..80267290190d0076435b2bc16888fb924d854d59 100644 (file)
--- a/sound/core/seq/seq_system.c
+++ b/sound/core/seq/seq_system.c
@@ -85,6 +85,7 @@ void snd_seq_system_broadcast(int client, int port, int type)
        ev.type = type;
        snd_seq_kernel_client_dispatch(sysclient, &ev, 0, 0);
 }
+EXPORT_SYMBOL_GPL(snd_seq_system_broadcast);
 
 /* entry points for broadcasting system events */
 int snd_seq_system_notify(int client, int port, struct snd_seq_event *ev)

diff --git a/sound/core/seq/seq_ump_client.c b/sound/core/seq/seq_ump_client.c
index 2f93d76b05cec89aa32c1b2ace90c9d91fba9003..901a670dcb36644d5215926d8b4873773f836661 100644 (file)
--- a/sound/core/seq/seq_ump_client.c
+++ b/sound/core/seq/seq_ump_client.c
@@ -13,6 +13,7 @@
 #include <sound/seq_kernel.h>
 #include <sound/seq_device.h>
 #include "seq_clientmgr.h"
+#include "seq_system.h"
 
 struct seq_ump_client;
 struct seq_ump_group;
@@ -273,6 +274,8 @@ static void update_port_infos(struct seq_ump_client *client)
                                                new);
                if (err < 0)
                        goto error;
+               /* notify to system port */
+               snd_seq_system_client_ev_port_change(client->seq_client, i);
        }
  error:
        kfree(new);