ACPICA: ACPICA: Tune _REG evaluations order in the initialization steps

ACPICA commit 77e0c7a482ac30ef857cf3c33d075e5fe5b5e449

This patch tunes _REG evaluations to be later than all table loading
facilities:
1. acpi_load_tables(): _REG is currently invoked after this function.
2. acpi_ns_exec_module_code_list(): this executes module level code, the
   execution should be a part of the table loading while we currently
   support this in a deferred way.
3. acpi_ns_initialize_objects(): this parses Region/Field/Buffer/Package where
   pkg_length primitive can be seen in the grammar, the parsing should be a
   part of the table loading while we currently support this in a deferred
   way.
Control method evaluation should happen after loading the tables. So this
patch changes the order of _REG evaluation when
acpi_gbl_group_module_level_code experiment is enabled. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/77e0c7a4
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/acpica/utxfinit.c b/drivers/acpi/acpica/utxfinit.c
index e1ffd7a..9415830 100644 (file)
--- a/drivers/acpi/acpica/utxfinit.c
+++ b/drivers/acpi/acpica/utxfinit.c
@@ -262,23 +262,6 @@ acpi_status __init acpi_initialize_objects(u32 flags)
 
        ACPI_FUNCTION_TRACE(acpi_initialize_objects);
 
-       /*
-        * Run all _REG methods
-        *
-        * Note: Any objects accessed by the _REG methods will be automatically
-        * initialized, even if they contain executable AML (see the call to
-        * acpi_ns_initialize_objects below).
-        */
-       acpi_gbl_reg_methods_enabled = TRUE;
-       if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
-               ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
-                                 "[Init] Executing _REG OpRegion methods\n"));
-
-               status = acpi_ev_initialize_op_regions();
-               if (ACPI_FAILURE(status)) {
-                       return_ACPI_STATUS(status);
-               }
-       }
 #ifdef ACPI_EXEC_APP
        /*
         * This call implements the "initialization file" option for acpi_exec.
@@ -318,6 +301,24 @@ acpi_status __init acpi_initialize_objects(u32 flags)
                }
        }
 
+       /*
+        * Run all _REG methods
+        *
+        * Note: Any objects accessed by the _REG methods will be automatically
+        * initialized, even if they contain executable AML (see the call to
+        * acpi_ns_initialize_objects below).
+        */
+       acpi_gbl_reg_methods_enabled = TRUE;
+       if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
+               ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
+                                 "[Init] Executing _REG OpRegion methods\n"));
+
+               status = acpi_ev_initialize_op_regions();
+               if (ACPI_FAILURE(status)) {
+                       return_ACPI_STATUS(status);
+               }
+       }
+
        /*
         * Initialize all device objects in the namespace. This runs the device
         * _STA and _INI methods.