diff options
| author | Lin Ming <ming.m.lin@intel.com> | 2011-11-28 02:46:02 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2012-01-17 09:36:25 +0100 |
| commit | 8931d9ea78848b073bf299594f148b83abde4a5e (patch) | |
| tree | 23df1b9c98f4a9ea7575586db88d7cf2343853f4 /drivers/acpi/acpica | |
| parent | ACPICA: Update for GCC 4 (diff) | |
| download | linux-8931d9ea78848b073bf299594f148b83abde4a5e.tar.xz linux-8931d9ea78848b073bf299594f148b83abde4a5e.zip | |
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>
Diffstat (limited to 'drivers/acpi/acpica')
| -rw-r--r-- | drivers/acpi/acpica/acobject.h | 1 | ||||
| -rw-r--r-- | drivers/acpi/acpica/dsargs.c | 2 | ||||
| -rw-r--r-- | drivers/acpi/acpica/excreate.c | 6 |
3 files changed, 8 insertions, 1 deletions
diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h index 1055769f2f01..6d276c20b57b 100644 --- a/drivers/acpi/acpica/acobject.h +++ b/drivers/acpi/acpica/acobject.h @@ -358,6 +358,7 @@ typedef enum { */ 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; diff --git a/drivers/acpi/acpica/dsargs.c b/drivers/acpi/acpica/dsargs.c index 42163d8db50b..d69e4a53175b 100644 --- a/drivers/acpi/acpica/dsargs.c +++ b/drivers/acpi/acpica/dsargs.c @@ -384,7 +384,7 @@ acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc) /* Execute the argument AML */ - status = acpi_ds_execute_arguments(node, node->parent, + status = acpi_ds_execute_arguments(node, extra_desc->extra.scope_node, extra_desc->extra.aml_length, extra_desc->extra.aml_start); if (ACPI_FAILURE(status)) { diff --git a/drivers/acpi/acpica/excreate.c b/drivers/acpi/acpica/excreate.c index 110711afada8..8a06dc523af7 100644 --- a/drivers/acpi/acpica/excreate.c +++ b/drivers/acpi/acpica/excreate.c @@ -330,6 +330,12 @@ acpi_ex_create_region(u8 * aml_start, region_obj2 = obj_desc->common.next_object; region_obj2->extra.aml_start = aml_start; region_obj2->extra.aml_length = aml_length; + if (walk_state->scope_info) { + region_obj2->extra.scope_node = + walk_state->scope_info->scope.node; + } else { + region_obj2->extra.scope_node = node; + } /* Init the region from the operands */ |