ACPICA: Add mechanism to defer _REG methods for some installed handlers

The memory/io/pci/dataTable regions must always be available. For
any user installed handlers for these spaces, defer execution
of _REG methods until acpi_enable_subsystem. This prevents any
chicken/egg problems and ensures that no methods are executed
until all of these regions are ready and available.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c
index fc9097821516..833a38a9c905 100644
--- a/drivers/acpi/acpica/utglobal.c
+++ b/drivers/acpi/acpica/utglobal.c
@@ -323,6 +323,7 @@ acpi_status acpi_ut_init_globals(void)
         acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
         acpi_gbl_osi_data = 0;
         acpi_gbl_osi_mutex = NULL;
+        acpi_gbl_reg_methods_executed = FALSE;
 
         /* Hardware oriented */