diff --git a/sound/core/timer.c b/sound/core/timer.c
index c6c5aa0849db0661a155aedf25572c47f77d0e6f..ee81c947c24bb9fb08e67b8c8db050a082a291ed 100644
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -1174,6 +1174,7 @@ static void snd_timer_user_ccallback(struct snd_timer_instance *timeri,
 		tu->tstamp = *tstamp;
 	if ((tu->filter & (1 << event)) == 0 || !tu->tread)
 		return;
+	memset(&r1, 0, sizeof(r1));
 	r1.event = event;
 	r1.tstamp = *tstamp;
 	r1.val = resolution;