From: Jaroslav Kysela <perex@perex.cz>
Date: Wed, 4 Sep 2002 07:35:25 +0000 (+0000)
Subject: Added back check for duplicated helements
X-Git-Tag: v1.0.3~390
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=52237f3542b7f3dc1dfe22dd615a8a26b0296cdd;p=alsa-lib.git

Added back check for duplicated helements
---

diff --git a/src/mixer/simple.c b/src/mixer/simple.c
index e293517e..0f8ceba2 100644
--- a/src/mixer/simple.c
+++ b/src/mixer/simple.c
@@ -873,6 +873,15 @@ static int simple_add1(snd_mixer_class_t *class, const char *name,
 	} else {
 		simple = melem->private_data;
 	}
+	if (simple->ctls[type].elem) {
+		SNDERR("helem (%s,'%s',%li,%li,%li) appears twice or more",
+				snd_ctl_elem_iface_name(snd_hctl_elem_get_interface(helem)),
+				snd_hctl_elem_get_name(helem),
+				snd_hctl_elem_get_index(helem),
+				snd_hctl_elem_get_device(helem),
+				snd_hctl_elem_get_subdevice(helem));
+		return -EINVAL;
+	}
 	simple->ctls[type].elem = helem;
 	simple->ctls[type].type = info.type;
 	simple->ctls[type].access = info.access;