MODULE_PARM_DESC(default_audio_input, "default audio input: 0=RCA back / "
"1=RCA front / 2=S/PDIF");
-static int boost_audio;
+static bool boost_audio;
module_param(boost_audio, bool, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(boost_audio, "boost the audio signal");