diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 737cab7fc3cec9d123ebf59e897060994dd0870c..3b795c56221f8c30f757fe9420eea7424dc2d804 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -219,8 +219,8 @@ static int musb_ulpi_write(struct otg_transceiver *otg,
 	return 0;
 }
 #else
-#define musb_ulpi_read(a, b)		NULL
-#define musb_ulpi_write(a, b, c)	NULL
+#define musb_ulpi_read		NULL
+#define musb_ulpi_write		NULL
 #endif
 
 static struct otg_io_access_ops musb_ulpi_access = {