only report volume change fail once

diff --git a/lib/mixer.c b/lib/mixer.c
index b4704b915dcff885a302665f94ec2cb901ca1572..5ef30a2c0f888414be47ffb5d39cdf36c910ef80 100644 (file)
--- a/lib/mixer.c
+++ b/lib/mixer.c
@@ -100,7 +100,12 @@ int mixer_channel(const char attribute((unused)) *c) {
 int mixer_control(int attribute((unused)) *left, 
                  int attribute((unused)) *right,
                  int attribute((unused)) set) {
-  error(0, "don't know how to set volume on this platform");
+  static int reported;
+
+  if(!reported) {
+    error(0, "don't know how to set volume on this platform");
+    reported = 1;
+  }
   return -1;
 }
 #endif