ALSA: ump: Update rawmidi name per EP name update

The rawmidi name string should be updated dynamically when the device
receives the UMP EP name update, too.  Both the core and legacy
rawmidi names are updated.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250110155943.31578-7-tiwai@suse.de

Author: tiwai

sound/core/ump.c

@@ -37,6 +37,7 @@ static int process_legacy_output(struct snd_ump_endpoint *ump,
 				 u32 *buffer, int count);
 static void process_legacy_input(struct snd_ump_endpoint *ump, const u32 *src,
 				 int words);
+static void ump_legacy_set_rawmidi_name(struct snd_ump_endpoint *ump);
 static void update_legacy_names(struct snd_ump_endpoint *ump);
 #else
 static inline int process_legacy_output(struct snd_ump_endpoint *ump,
@@ -48,6 +49,9 @@ static inline void process_legacy_input(struct snd_ump_endpoint *ump,
 					const u32 *src, int words)
 {
 }
+static inline void ump_legacy_set_rawmidi_name(struct snd_ump_endpoint *ump)
+{
+}
 static inline void update_legacy_names(struct snd_ump_endpoint *ump)
 {
 }
@@ -751,8 +755,16 @@ static void ump_set_rawmidi_name(struct snd_ump_endpoint *ump)
 static int ump_handle_ep_name_msg(struct snd_ump_endpoint *ump,
 				  const union snd_ump_stream_msg *buf)
 {
-	return ump_append_string(ump, ump->info.name, sizeof(ump->info.name),
-				 buf->raw, 2);
+	int ret;
+
+	ret = ump_append_string(ump, ump->info.name, sizeof(ump->info.name),
+				buf->raw, 2);
+	if (ret && ump->parsed) {
+		ump_set_rawmidi_name(ump);
+		ump_legacy_set_rawmidi_name(ump);
+	}
+
+	return ret;
 }
 
 /* handle EP product id stream message; update the UMP product_id string */
@@ -1308,6 +1320,14 @@ static void update_legacy_names(struct snd_ump_endpoint *ump)
 	update_legacy_substreams(ump, rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT);
 }
 
+static void ump_legacy_set_rawmidi_name(struct snd_ump_endpoint *ump)
+{
+	struct snd_rawmidi *rmidi = ump->legacy_rmidi;
+
+	snprintf(rmidi->name, sizeof(rmidi->name), "%.68s (MIDI 1.0)",
+		 ump->core.name);
+}
+
 int snd_ump_attach_legacy_rawmidi(struct snd_ump_endpoint *ump,
 				  char *id, int device)
 {
@@ -1338,12 +1358,11 @@ int snd_ump_attach_legacy_rawmidi(struct snd_ump_endpoint *ump,
 	if (output)
 		snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
 				    &snd_ump_legacy_output_ops);
-	snprintf(rmidi->name, sizeof(rmidi->name), "%.68s (MIDI 1.0)",
-		 ump->core.name);
 	rmidi->info_flags = ump->core.info_flags & ~SNDRV_RAWMIDI_INFO_UMP;
 	rmidi->ops = &snd_ump_legacy_ops;
 	rmidi->private_data = ump;
 	ump->legacy_rmidi = rmidi;
+	ump_legacy_set_rawmidi_name(ump);
 	update_legacy_names(ump);
 
 	rmidi->tied_device = ump->core.device;