From b12b5130c99603f22534aba31615386b5fc40817 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Fri, 16 Jan 2009 16:00:12 +0100
Subject: mixer: check param==NULL in the alsa and oss mixer code

When MPD starts without audio output configuration, the "param"
variable is NULL.  This triggers a segmentation fault in both mixer
plugins.
---
 src/mixer/oss_mixer.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/mixer/oss_mixer.c')

diff --git a/src/mixer/oss_mixer.c b/src/mixer/oss_mixer.c
index 75f1f5a0b..3f4b290d9 100644
--- a/src/mixer/oss_mixer.c
+++ b/src/mixer/oss_mixer.c
@@ -52,6 +52,10 @@ oss_mixer_configure(struct mixer_data *data, ConfigParam *param)
 {
 	struct oss_mixer *om = (struct oss_mixer *) data;
 	BlockParam *bp;
+
+	if (param == NULL)
+		return;
+
 	bp = getBlockParam(param, "mixer_device");
 	if (bp) {
 		if (om->device) 
-- 
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