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-rw-r--r--drivers/acpi/acpica/psobject.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/psobject.c b/drivers/acpi/acpica/psobject.c
index ef6384e374fc..0bef6df71bba 100644
--- a/drivers/acpi/acpica/psobject.c
+++ b/drivers/acpi/acpica/psobject.c
@@ -359,6 +359,32 @@ acpi_ps_create_op(struct acpi_walk_state *walk_state,
acpi_ps_build_named_op(walk_state, aml_op_start, op,
&named_op);
acpi_ps_free_op(op);
+
+#ifdef ACPI_ASL_COMPILER
+ if (acpi_gbl_disasm_flag
+ && walk_state->opcode == AML_EXTERNAL_OP
+ && status == AE_NOT_FOUND) {
+ /*
+ * If parsing of AML_EXTERNAL_OP's name path fails, then skip
+ * past this opcode and keep parsing. This is a much better
+ * alternative than to abort the entire disassembler. At this
+ * point, the parser_state is at the end of the namepath of the
+ * external declaration opcode. Setting walk_state->Aml to
+ * walk_state->parser_state.Aml + 2 moves increments the
+ * walk_state->Aml past the object type and the paramcount of the
+ * external opcode. For the error message, only print the AML
+ * offset. We could attempt to print the name but this may cause
+ * a segmentation fault when printing the namepath because the
+ * AML may be incorrect.
+ */
+ acpi_os_printf
+ ("// Invalid external declaration at AML offset 0x%x.\n",
+ walk_state->aml -
+ walk_state->parser_state.aml_start);
+ walk_state->aml = walk_state->parser_state.aml + 2;
+ return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
+ }
+#endif
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}