diff --git a/src/drivers/net/e1000.c b/src/drivers/net/e1000.c
index 2eb6b333..5eab6823 100644
--- a/src/drivers/net/e1000.c
+++ b/src/drivers/net/e1000.c
@@ -3385,6 +3385,25 @@ e1000_sw_init(struct pci_device *pdev, struct e1000_hw *hw)
 }
 
 
+/******************************************************************************
+ * Functions not present in the linux driver
+ ******************************************************************************/
+
+#if 0
+static uint32_t
+e1000_io_read(struct e1000_hw *hw __unused, uint32_t port)
+{
+        return inl(port);
+}
+#endif
+
+static void
+e1000_io_write(struct e1000_hw *hw __unused, uint32_t port, uint32_t value)
+{
+        outl(value, port);
+}
+
+
 /******************************************************************************
  * Functions not present in the linux driver
  ******************************************************************************/