diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c
index 9d228878cea2..09af903b75ae 100644
--- a/arch/um/drivers/hostaudio_kern.c
+++ b/arch/um/drivers/hostaudio_kern.c
@@ -48,6 +48,7 @@ MODULE_PARM_DESC(mixer, MIXER_HELP);
 #ifndef MODULE
 static int set_dsp(char *name, int *add)
 {
+	*add = 0;
 	dsp = name;
 	return 0;
 }