From: Takashi Iwai <tiwai@suse.de>
Date: Fri, 2 Sep 2005 17:01:32 +0000 (+0000)
Subject: Fix segfault of envy24control
X-Git-Tag: v1.0.10rc2~1
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=e16a0cb08059b0eb8ed09374d0310d8873f4a7df;p=alsa-tools.git

Fix segfault of envy24control

Fix segfault of envy24control.
---

diff --git a/envy24control/midi.c b/envy24control/midi.c
index c01b84c..327f6cf 100644
--- a/envy24control/midi.c
+++ b/envy24control/midi.c
@@ -142,6 +142,10 @@ static void do_controller(int c, int v)
 int midi_controller(int c, int v)
 {
   int v2;
+
+  if (! seq)
+    return 0;
+
   if(c<0 || c>127) return 0;
 
   if(v<0) v=0;