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-rw-r--r--include/actbl2.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/actbl2.h b/include/actbl2.h
index 7f6ecf84a93c9..fde9552e43e33 100644
--- a/include/actbl2.h
+++ b/include/actbl2.h
@@ -153,6 +153,14 @@
#define ACPI_SIG_WDAT "WDAT" /* Watchdog Action Table */
#define ACPI_SIG_WDRT "WDRT" /* Watchdog Resource Table */
+#ifdef ACPI_UNDEFINED_TABLES
+/*
+ * These tables have been seen in the field, but no definition has been found
+ */
+#define ACPI_SIG_ATKG "ATKG"
+#define ACPI_SIG_GSCI "GSCI" /* GMCH SCI table */
+#define ACPI_SIG_IEIT "IEIT"
+#endif
/*
* All tables must be byte-packed to match the ACPI specification, since