diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c
index 8a0e7f988d25..847f70363477 100644
--- a/drivers/usb/gadget/function/f_midi.c
+++ b/drivers/usb/gadget/function/f_midi.c
@@ -1140,6 +1140,7 @@ static void f_midi_free(struct usb_function *f)
 	for (i = opts->in_ports - 1; i >= 0; --i)
 		kfree(midi->in_port[i]);
 	kfree(midi);
+	opts->func_inst.f = NULL;
 	--opts->refcnt;
 	mutex_unlock(&opts->lock);
 }