1 files changed, 11 insertions, 2 deletions

diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index 64f838beaabf..ad77c613c743 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -712,8 +712,17 @@ typedef u8 acpi_adr_space_type;
 #define ACPI_ADR_SPACE_CMOS             (acpi_adr_space_type) 5
 #define ACPI_ADR_SPACE_PCI_BAR_TARGET   (acpi_adr_space_type) 6
 #define ACPI_ADR_SPACE_IPMI             (acpi_adr_space_type) 7
-#define ACPI_ADR_SPACE_DATA_TABLE       (acpi_adr_space_type) 8
-#define ACPI_ADR_SPACE_FIXED_HARDWARE   (acpi_adr_space_type) 127
+
+/*
+ * Special region types
+ *
+ * Note: A Data Table region is a special type of operation region
+ * that has its own AML opcode. However, internally, the AML
+ * interpreter simply creates an operation region with an an address
+ * space type of ACPI_ADR_SPACE_DATA_TABLE.
+ */
+#define ACPI_ADR_SPACE_DATA_TABLE       (acpi_adr_space_type) 0x7E      /* Internal to ACPICA only */
+#define ACPI_ADR_SPACE_FIXED_HARDWARE   (acpi_adr_space_type) 0x7F
 
 /*
  * bit_register IDs