diff options
| author | Bob Moore <robert.moore@intel.com> | 2010-07-06 10:37:13 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-07-06 22:34:27 -0400 |
| commit | 09079250db4d470f75eddcce31e0229c92d6c3bf (patch) | |
| tree | c96fc293cf1954f09c101b192dbd048e6eece164 /drivers/acpi/acpica/dsobject.c | |
| parent | 150dba38f0c3d2d5f5edc58145d202de08ed623c (diff) | |
| download | lwn-09079250db4d470f75eddcce31e0229c92d6c3bf.tar.gz lwn-09079250db4d470f75eddcce31e0229c92d6c3bf.zip | |
ACPICA: Fix for Alias references within Package objects
This fixes a problem where a reference to an Alias within the
definition of a Package was not always resolved properly. Aliases
to objects like Processors, ThermalZones, etc. were resolved to the
actual object instead of a reference to the object as it should be.
Package objects are only allowed to contain integer, string,
buffer, package, and reference objects.
https://bugzilla.redhat.com/show_bug.cgi?id=608648
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>
Diffstat (limited to 'drivers/acpi/acpica/dsobject.c')
| -rw-r--r-- | drivers/acpi/acpica/dsobject.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/acpi/acpica/dsobject.c b/drivers/acpi/acpica/dsobject.c index 3607adcaf085..8e85f54a8e0e 100644 --- a/drivers/acpi/acpica/dsobject.c +++ b/drivers/acpi/acpica/dsobject.c @@ -81,6 +81,7 @@ acpi_ds_build_internal_object(struct acpi_walk_state *walk_state, { union acpi_operand_object *obj_desc; acpi_status status; + acpi_object_type type; ACPI_FUNCTION_TRACE(ds_build_internal_object); @@ -172,7 +173,20 @@ acpi_ds_build_internal_object(struct acpi_walk_state *walk_state, return_ACPI_STATUS(status); } - switch (op->common.node->type) { + /* + * Special handling for Alias objects. We need to setup the type + * and the Op->Common.Node to point to the Alias target. Note, + * Alias has at most one level of indirection internally. + */ + type = op->common.node->type; + if (type == ACPI_TYPE_LOCAL_ALIAS) { + type = obj_desc->common.type; + op->common.node = + ACPI_CAST_PTR(struct acpi_namespace_node, + op->common.node->object); + } + + switch (type) { /* * For these types, we need the actual node, not the subobject. * However, the subobject did not get an extra reference count above. |