[PATCH] ALSA: ump: Don't update FB name for static blocks

[Takashi Iwai <tiwai@xxxxxxx>]

When a device tries to update the FB name string even if its Endpoint
is declared as static, we should skip it, just already done for the FB
info update reply.

Fixes: 37e0e14128e0 ("ALSA: ump: Support UMP Endpoint and Function Block parsing")
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
 sound/core/ump.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sound/core/ump.c b/sound/core/ump.c
index 3f61220c23b4..b325fcfa77d0 100644
--- a/sound/core/ump.c
+++ b/sound/core/ump.c
@@ -806,6 +806,13 @@ static int ump_handle_fb_name_msg(struct snd_ump_endpoint *ump,
 	if (!fb)
 		return -ENODEV;
 
+	if (ump->parsed &&
+	    (ump->info.flags & SNDRV_UMP_EP_INFO_STATIC_BLOCKS)) {
+		ump_dbg(ump, "Skipping static FB name update (blk#%d)\n",
+			fb->info.block_id);
+		return 0;
+	}
+
 	ret = ump_append_string(ump, fb->info.name, sizeof(fb->info.name),
 				buf->raw, 3);
 	/* notify the FB name update to sequencer, too */
-- 
2.43.0