ACPICA: Fix to allow region arguments to reference other scopes
Allow referenced objects to be in a different scope.
http://www.acpica.org/bugzilla/show_bug.cgi?id=937
http://marc.info/?l=linux-acpi&m=131636632718222&w=2
ACPI Error: [RAMB] Namespace lookup failure, AE_NOT_FOUND (20110112/psargs-359)
ACPI Exception: AE_NOT_FOUND, Could not execute arguments for [RAMW] (Region) (20110112/nsinit-349)
Scope (_SB)
{
Name (RAMB, 0xDF5A1018)
OperationRegion (\RAMW, SystemMemory, RAMB, 0x00010000)
}
For above ASL code, we need to save scope node(\_SB) to lookup
the argument node(\_SB.RAMB).
Reported-by: Jim Green <student.northwestern@gmail.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h
index 1055769..6d276c2 100644
--- a/drivers/acpi/acpica/acobject.h
+++ b/drivers/acpi/acpica/acobject.h
@@ -358,6 +358,7 @@
*/
struct acpi_object_extra {
ACPI_OBJECT_COMMON_HEADER struct acpi_namespace_node *method_REG; /* _REG method for this region (if any) */
+ struct acpi_namespace_node *scope_node;
void *region_context; /* Region-specific data */
u8 *aml_start;
u32 aml_length;