From: Jaroslav Kysela <perex@perex.cz>
Date: Fri, 23 Apr 2021 14:35:26 +0000 (+0200)
Subject: control: remap - don't allow I/O on renamed IDs
X-Git-Tag: v1.2.5~36
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=3e731ff51e5b2bc2cc606151bfc17f1763a524a8;p=alsa-lib.git

control: remap - don't allow I/O on renamed IDs

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---

diff --git a/src/control/control_remap.c b/src/control/control_remap.c
index 3c970cb8..4824259f 100644
--- a/src/control/control_remap.c
+++ b/src/control/control_remap.c
@@ -251,6 +251,8 @@ static int remap_id_to_child(snd_ctl_remap_t *priv, snd_ctl_elem_id_t *id, snd_c
 		}
 		*id = rid->id_child;
 	} else {
+		if (remap_find_id_child(priv, id))
+			return -ENOENT;
 		numid = remap_find_numid_app(priv, id->numid);
 		if (numid)
 			id->numid = numid->numid_child;