diff --git a/src/drivers/net/intel.c b/src/drivers/net/intel.c
index d08bc920..4b0e4c0e 100644
--- a/src/drivers/net/intel.c
+++ b/src/drivers/net/intel.c
@@ -250,32 +250,6 @@ static int intel_fetch_mac ( struct intel_nic *intel, uint8_t *hw_addr ) {
 	return -ENOENT;
 }
 
-/******************************************************************************
- *
- * Diagnostics
- *
- ******************************************************************************
- */
-
-/**
- * Dump diagnostic information
- *
- * @v intel		Intel device
- */
-static void __attribute__ (( unused )) intel_diag ( struct intel_nic *intel ) {
-
-	DBGC ( intel, "INTEL %p TX %04x(%02x)/%04x(%02x) "
-	       "RX %04x(%02x)/%04x(%02x)\n", intel,
-	       ( intel->tx.cons & 0xffff ),
-	       readl ( intel->regs + intel->tx.reg + INTEL_xDH ),
-	       ( intel->tx.prod & 0xffff ),
-	       readl ( intel->regs + intel->tx.reg + INTEL_xDT ),
-	       ( intel->rx.cons & 0xffff ),
-	       readl ( intel->regs + intel->rx.reg + INTEL_xDH ),
-	       ( intel->rx.prod & 0xffff ),
-	       readl ( intel->regs + intel->rx.reg + INTEL_xDT ) );
-}
-
 /******************************************************************************
  *
  * Device reset
diff --git a/src/drivers/net/intel.h b/src/drivers/net/intel.h
index c868167b..621ee2e7 100644
--- a/src/drivers/net/intel.h
+++ b/src/drivers/net/intel.h
@@ -259,6 +259,25 @@ enum intel_flags {
 	INTEL_VMWARE = 0x0002,
 };
 
+/**
+ * Dump diagnostic information
+ *
+ * @v intel		Intel device
+ */
+static inline void intel_diag ( struct intel_nic *intel ) {
+
+	DBGC ( intel, "INTEL %p TX %04x(%02x)/%04x(%02x) "
+	       "RX %04x(%02x)/%04x(%02x)\n", intel,
+	       ( intel->tx.cons & 0xffff ),
+	       readl ( intel->regs + intel->tx.reg + INTEL_xDH ),
+	       ( intel->tx.prod & 0xffff ),
+	       readl ( intel->regs + intel->tx.reg + INTEL_xDT ),
+	       ( intel->rx.cons & 0xffff ),
+	       readl ( intel->regs + intel->rx.reg + INTEL_xDH ),
+	       ( intel->rx.prod & 0xffff ),
+	       readl ( intel->regs + intel->rx.reg + INTEL_xDT ) );
+}
+
 extern int intel_create_ring ( struct intel_nic *intel,
 			       struct intel_ring *ring );
 extern void intel_destroy_ring ( struct intel_nic *intel,