diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 951d69f..10e7141 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -127,6 +127,14 @@
 #else
 #	define COUNT(x) do {} while (0)
 #endif
+
+	/* debug files */
+#ifdef DEBUG
+	struct dentry		*debug_dir;
+	struct dentry		*debug_async;
+	struct dentry		*debug_periodic;
+	struct dentry		*debug_registers;
+#endif
 };
 
 /* convert between an HCD pointer and the corresponding EHCI_HCD */