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Subject[PATCH 09/15] ACPICA: ACPICA: Tune _REG evaluations order in the initialization steps
Date
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>
---
drivers/acpi/acpica/utxfinit.c | 35 ++++++++++++++++++-----------------
1 file changed, 18 insertions(+), 17 deletions(-)

diff --git a/drivers/acpi/acpica/utxfinit.c b/drivers/acpi/acpica/utxfinit.c
index e1ffd7a..9415830 100644
--- 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.
@@ -319,6 +302,24 @@ 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.
*/
--
1.7.10
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