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Diffstat (limited to 'drivers/acpi/acpica/utxfinit.c')
-rw-r--r--drivers/acpi/acpica/utxfinit.c47
1 files changed, 30 insertions, 17 deletions
diff --git a/drivers/acpi/acpica/utxfinit.c b/drivers/acpi/acpica/utxfinit.c
index a7137ec28447..e38facd3e32f 100644
--- a/drivers/acpi/acpica/utxfinit.c
+++ b/drivers/acpi/acpica/utxfinit.c
@@ -147,6 +147,28 @@ acpi_status __init acpi_enable_subsystem(u32 flags)
ACPI_FUNCTION_TRACE(acpi_enable_subsystem);
+ /*
+ * The early initialization phase is complete. The namespace is loaded,
+ * and we can now support address spaces other than Memory, I/O, and
+ * PCI_Config.
+ */
+ acpi_gbl_early_initialization = FALSE;
+
+ /*
+ * Install the default operation region handlers. These are the
+ * handlers that are defined by the ACPI specification to be
+ * "always accessible" -- namely, system_memory, system_IO, and
+ * PCI_Config. This also means that no _REG methods need to be
+ * run for these address spaces. We need to have these handlers
+ * installed before any AML code can be executed, especially any
+ * module-level code (11/2015).
+ */
+ status = acpi_ev_install_region_handlers();
+ if (ACPI_FAILURE(status)) {
+ ACPI_EXCEPTION((AE_INFO, status,
+ "During Region initialization"));
+ return_ACPI_STATUS(status);
+ }
#if (!ACPI_REDUCED_HARDWARE)
/* Enable ACPI mode */
@@ -175,23 +197,7 @@ acpi_status __init acpi_enable_subsystem(u32 flags)
return_ACPI_STATUS(status);
}
}
-#endif /* !ACPI_REDUCED_HARDWARE */
-
- /*
- * Install the default op_region handlers. These are installed unless
- * other handlers have already been installed via the
- * install_address_space_handler interface.
- */
- if (!(flags & ACPI_NO_ADDRESS_SPACE_INIT)) {
- ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
- "[Init] Installing default address space handlers\n"));
- status = acpi_ev_install_region_handlers();
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
- }
-#if (!ACPI_REDUCED_HARDWARE)
/*
* Initialize ACPI Event handling (Fixed and General Purpose)
*
@@ -261,6 +267,7 @@ acpi_status __init acpi_initialize_objects(u32 flags)
* 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"));
@@ -285,8 +292,14 @@ acpi_status __init acpi_initialize_objects(u32 flags)
* outside of any control method is wrapped with a temporary control
* method object and placed on a global list. The methods on this list
* are executed below.
+ *
+ * This case executes the module-level code for all tables only after
+ * all of the tables have been loaded. It is a legacy option and is
+ * not compatible with other ACPI implementations. See acpi_ns_load_table.
*/
- acpi_ns_exec_module_code_list();
+ if (acpi_gbl_group_module_level_code) {
+ acpi_ns_exec_module_code_list();
+ }
/*
* Initialize the objects that remain uninitialized. This runs the