forked from luck/tmp_suning_uos_patched
Subject: [PATCH] ACPICA: Fix Scope() op in module level code
Some Panasonic Toughbooks create nodes in module level code. Module level code is the executable AML code outside of control method, for example, below AML code creates a node \_SB.PCI0.GFX0.DD02.CUBL If (\_OSI ("Windows 2006")) { Scope (\_SB.PCI0.GFX0.DD02) { Name (CUBL, Ones) ... } } Scope() op does not actually create a new object, it refers to an existing object(\_SB.PCI0.GFX0.DD02 in above example). However, for Scope(), we want to indeed open a new scope, so the child nodes(CUBL in above example) can be created correctly under it. https://bugzilla.kernel.org/show_bug.cgi?id=19462 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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@ -300,10 +300,25 @@ acpi_ds_exec_begin_op(struct acpi_walk_state *walk_state,
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* we must enter this object into the namespace. The created
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* object is temporary and will be deleted upon completion of
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* the execution of this method.
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*
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* Note 10/2010: Except for the Scope() op. This opcode does
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* not actually create a new object, it refers to an existing
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* object. However, for Scope(), we want to indeed open a
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* new scope.
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*/
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status = acpi_ds_load2_begin_op(walk_state, NULL);
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if (op->common.aml_opcode != AML_SCOPE_OP) {
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status =
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acpi_ds_load2_begin_op(walk_state, NULL);
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} else {
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status =
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acpi_ds_scope_stack_push(op->named.node,
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op->named.node->
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type, walk_state);
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if (ACPI_FAILURE(status)) {
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return_ACPI_STATUS(status);
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}
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}
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}
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break;
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case AML_CLASS_EXECUTE:
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