From: Bob Moore <robert.moore@intel.com>
Date: Mon, 11 Apr 2022 20:52:26 +0200
Subject: ACPICA: Add new ACPI 6.4 semantics for LoadTable() operator
Patch-mainline: v5.19-rc1
Git-commit: e468e39f7cabce2095a2f19dadbfdbf3c21f18f1
References: jsc#PED-1408

ACPICA commit b32dde35e26a63a85d78d4dc0a7260b61e626ac1

DDB_HANDLE is gone, now LoadTable() returns a pass/fail integer.

Link: https://github.com/acpica/acpica/commit/b32dde35
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Lee, Chun-Yi <jlee@suse.com>
---
 drivers/acpi/acpica/exconfig.c |   24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)

--- a/drivers/acpi/acpica/exconfig.c
+++ b/drivers/acpi/acpica/exconfig.c
@@ -87,11 +87,21 @@ acpi_ex_load_table_op(struct acpi_walk_s
 	struct acpi_namespace_node *parent_node;
 	struct acpi_namespace_node *start_node;
 	struct acpi_namespace_node *parameter_node = NULL;
+	union acpi_operand_object *return_obj;
 	union acpi_operand_object *ddb_handle;
 	u32 table_index;
 
 	ACPI_FUNCTION_TRACE(ex_load_table_op);
 
+	/* Create the return object */
+
+	return_obj = acpi_ut_create_integer_object((u64)0);
+	if (!return_obj) {
+		return_ACPI_STATUS(AE_NO_MEMORY);
+	}
+
+	*return_desc = return_obj;
+
 	/* Find the ACPI table in the RSDT/XSDT */
 
 	acpi_ex_exit_interpreter();
@@ -106,12 +116,6 @@ acpi_ex_load_table_op(struct acpi_walk_s
 
 		/* Table not found, return an Integer=0 and AE_OK */
 
-		ddb_handle = acpi_ut_create_integer_object((u64) 0);
-		if (!ddb_handle) {
-			return_ACPI_STATUS(AE_NO_MEMORY);
-		}
-
-		*return_desc = ddb_handle;
 		return_ACPI_STATUS(AE_OK);
 	}
 
@@ -198,7 +202,13 @@ acpi_ex_load_table_op(struct acpi_walk_s
 		}
 	}
 
-	*return_desc = ddb_handle;
+	/* Remove the reference to ddb_handle created by acpi_ex_add_table above */
+
+	acpi_ut_remove_reference(ddb_handle);
+
+	/* Return -1 (non-zero) indicates success */
+
+	return_obj->integer.value = 0xFFFFFFFFFFFFFFFF;
 	return_ACPI_STATUS(status);
 }