diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c
index 1f94dad57307960424a531504e9c84ae01b1f338..a90440300735fecaa9502c0234e7abbb81db860b 100644
--- a/drivers/usb/gadget/function/f_midi.c
+++ b/drivers/usb/gadget/function/f_midi.c
@@ -1097,7 +1097,7 @@ static void f_midi_unbind(struct usb_configuration *c, struct usb_function *f)
 	usb_free_all_descriptors(f);
 }
 
-struct usb_function *f_midi_alloc(struct usb_function_instance *fi)
+static struct usb_function *f_midi_alloc(struct usb_function_instance *fi)
 {
 	struct f_midi *midi;
 	struct f_midi_opts *opts;
diff --git a/drivers/usb/gadget/legacy/gmidi.c b/drivers/usb/gadget/legacy/gmidi.c
index 0d01e467af0946be7c06aaa4ee2e6c2a76cd787d..e02a095294ac24fe0640555839d37e57833a13bd 100644
--- a/drivers/usb/gadget/legacy/gmidi.c
+++ b/drivers/usb/gadget/legacy/gmidi.c
@@ -115,8 +115,8 @@ static struct usb_gadget_strings *dev_strings[] = {
 	NULL,
 };
 
-struct usb_function_instance *fi_midi;
-struct usb_function *f_midi;
+static struct usb_function_instance *fi_midi;
+static struct usb_function *f_midi;
 
 static int __exit midi_unbind(struct usb_composite_dev *dev)
 {