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ACPICA: Fix to allow aliases within ASL namepaths

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Fixes a problem where the use of an alias within a namepath
would result in a not found error or cause the compiler to fault.
Also now allows forward references from the Alias operator itself.
ACPICA BZ 738.

http://www.acpica.org/bugzilla/show_bug.cgi?id=738

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>
This commit is contained in:
Bob Moore 2008-11-13 10:51:49 +08:00 committed by Len Brown
parent 319f8b8927
commit 5572a9859f
1 changed files with 4 additions and 0 deletions
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4
drivers/acpi/namespace/nsaccess.c
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@ -588,6 +588,10 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
* segments).
*/
if (this_node->type == ACPI_TYPE_LOCAL_ALIAS) {
if (!this_node->object) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
if (acpi_ns_opens_scope
(((struct acpi_namespace_node *)this_node->
object)->type)) {