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ACPICA: Remove acpi_gbl_group_module_level_code and only use acpi_gbl_execute_tables_as_methods instead

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acpi_gbl_group_module_level_code and acpi_gbl_execute_tables_as_methods were
used to enable different table load behavior. The different table
load behaviors are as follows:

A.) acpi_gbl_group_module_level_code enabled the legacy approach where
    ASL if statements are executed after the namespace object has
    been loaded.
B.) acpi_gbl_execute_tables_as_methods is currently used to enable the
    table load to be a method invocation. This meaning that ASL If
    statements are executed in-line rather than deferred until after
    the ACPI namespace has been populated. This is the correct
    behavior and option A will be removed in the future.

We do not support a table load behavior where these variables are
assigned the same value. In otherwords, we only support option A or B
and do not need acpi_gbl_group_module_level_code to enable A. From now on,
acpi_gbl_execute_tables_as_methods == 0 enables option A and
acpi_gbl_execute_tables_as_methods == 1 enables option B.

Note: option A is expected to be removed in the future and option B
will become the only supported table load behavior.

Signed-off-by: Erik Schmauss <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Erik Schmauss 2018-10-17 15:41:20 -07:00 • committed by Rafael J. Wysocki
commit 08930d56c7
3 changed files with 2 additions and 10 deletions
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2
drivers/acpi/acpica/psloop.c
View file

@ -147,7 +147,7 @@ acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
* future. Use of this option can cause problems with AML code that
* depends upon in-order immediate execution of module-level code.
*/
if (acpi_gbl_group_module_level_code &&
if (!acpi_gbl_execute_tables_as_methods &&
(walk_state->pass_number <= ACPI_IMODE_LOAD_PASS2) &&
((walk_state->parse_flags & ACPI_PARSE_DISASSEMBLE) == 0)) {
/*

3
drivers/acpi/acpica/tbxfload.c
View file

@ -69,8 +69,7 @@ acpi_status ACPI_INIT_FUNCTION acpi_load_tables(void)
"While loading namespace from ACPI tables"));
}
if (acpi_gbl_execute_tables_as_methods
|| !acpi_gbl_group_module_level_code) {
if (acpi_gbl_execute_tables_as_methods) {
/*
* If the module-level code support is enabled, initialize the objects
* in the namespace that remain uninitialized. This runs the executable