diff --git a/drivers/net/wireless/iwlwifi/iwl-commands.h b/drivers/net/wireless/iwlwifi/iwl-commands.h
index 7aea7b3..e125896 100644
--- a/drivers/net/wireless/iwlwifi/iwl-commands.h
+++ b/drivers/net/wireless/iwlwifi/iwl-commands.h
@@ -386,7 +386,18 @@
  *****************************************************************************/
 
 #define UCODE_VALID_OK	cpu_to_le32(0x1)
-#define INITIALIZE_SUBTYPE    (9)
+
+enum iwlagn_ucode_subtype {
+	UCODE_SUBTYPE_REGULAR	= 0,
+	UCODE_SUBTYPE_REGULAR_NEW = 1,
+	UCODE_SUBTYPE_INIT	= 9,
+
+	/*
+	 * Not a valid subtype, the ucode has just a u8, so
+	 * we can use something > 0xff for this value.
+	 */
+	UCODE_SUBTYPE_NONE_LOADED = 0x100,
+};
 
 /**
  * REPLY_ALIVE = 0x1 (response only, not a command)