diff --git a/drivers/usb/phy/phy-fsm-usb.c b/drivers/usb/phy/phy-fsm-usb.c
index 65c3a728ef4f..7aa314ef4a8a 100644
--- a/drivers/usb/phy/phy-fsm-usb.c
+++ b/drivers/usb/phy/phy-fsm-usb.c
@@ -64,7 +64,7 @@ static int otg_set_protocol(struct otg_fsm *fsm, int protocol)
 static int state_changed;
 
 /* Called when leaving a state.  Do state clean up jobs here */
-void otg_leave_state(struct otg_fsm *fsm, enum usb_otg_state old_state)
+static void otg_leave_state(struct otg_fsm *fsm, enum usb_otg_state old_state)
 {
 	switch (old_state) {
 	case OTG_STATE_B_IDLE:
@@ -121,7 +121,7 @@ void otg_leave_state(struct otg_fsm *fsm, enum usb_otg_state old_state)
 }
 
 /* Called when entering a state */
-int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
+static int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
 {
 	state_changed = 1;
 	if (fsm->otg->phy->state == new_state)