ACPICA: Fix to allow aliases within ASL namepaths
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>
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@ -588,6 +588,10 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
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* segments).
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*/
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if (this_node->type == ACPI_TYPE_LOCAL_ALIAS) {
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if (!this_node->object) {
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return_ACPI_STATUS(AE_NOT_EXIST);
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}
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if (acpi_ns_opens_scope
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(((struct acpi_namespace_node *)this_node->
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object)->type)) {
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