ACPICA: Disassembler: ignore AE_ALREADY_EXISTS status when parsing create operators

ACPICA commit cd66d0a50fdc9cc4dcd998e08e7aa3c4154bea2d

Disassembler is intended to emit existing ASL code as-is. Therefore,
error messages emitted during disassembly should be ignored or
handled in a way such that the disassembler can continue to parse the
AML. This change ignores AE_ALREADY_EXISTS errors during the deferred
Op parsing for create operators in order to complete parsing ASL
termlists.

Link: acpica/acpica@cd66d0a5
Signed-off-by: Erik Kaneda <[email protected]>
Signed-off-by: Bob Moore <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>

Author: Erik Kaneda

drivers/acpi/acpica/dsfield.c

@@ -177,7 +177,10 @@ acpi_ds_create_buffer_field(union acpi_parse_object *op,
 					arg->common.value.string, ACPI_TYPE_ANY,
 					ACPI_IMODE_LOAD_PASS1, flags,
 					walk_state, &node);
-		if (ACPI_FAILURE(status)) {
+		if ((walk_state->parse_flags & ACPI_PARSE_DISASSEMBLE)
+		    && status == AE_ALREADY_EXISTS) {
+			status = AE_OK;
+		} else if (ACPI_FAILURE(status)) {
 			ACPI_ERROR_NAMESPACE(walk_state->scope_info,
 					     arg->common.value.string, status);
 			return_ACPI_STATUS(status);