UINT16 DriveAddress;\r
} IDE_BASE_REGISTERS;\r
\r
-#define ATAPI_SCSI_PASS_THRU_DEV_SIGNATURE EFI_SIGNATURE_32 ('a', 's', 'p', 't')\r
+#define ATAPI_SCSI_PASS_THRU_DEV_SIGNATURE SIGNATURE_32 ('a', 's', 'p', 't')\r
\r
typedef struct {\r
UINTN Signature;\r