diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 999c4c2..70c6a35 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -600,6 +600,7 @@
 #define X86_MODEL_ANY  0
 #define X86_FEATURE_ANY 0	/* Same as FPU, you can't test for that */
 
+#define IPACK_ANY_FORMAT 0xff
 #define IPACK_ANY_ID (~0)
 struct ipack_device_id {
 	__u8  format;			/* Format version or IPACK_ANY_ID */