diff --git a/drivers/input/joystick/gamecon.c b/drivers/input/joystick/gamecon.c
index 5a672dcac0d8174a151254ac31b591f0189f9d91..eae14d512353aae4902f3ce482c1cf87cba736b6 100644
--- a/drivers/input/joystick/gamecon.c
+++ b/drivers/input/joystick/gamecon.c
@@ -951,6 +951,7 @@ static void gc_attach(struct parport *pp)
 	pads = gc_cfg[port_idx].args + 1;
 	n_pads = gc_cfg[port_idx].nargs - 1;
 
+	memset(&gc_parport_cb, 0, sizeof(gc_parport_cb));
 	gc_parport_cb.flags = PARPORT_FLAG_EXCL;
 
 	pd = parport_register_dev_model(pp, "gamecon", &gc_parport_cb,