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path: root/drivers/acpi/parser/psparse.c
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Diffstat (limited to 'drivers/acpi/parser/psparse.c')
-rw-r--r--drivers/acpi/parser/psparse.c35
1 files changed, 21 insertions, 14 deletions
diff --git a/drivers/acpi/parser/psparse.c b/drivers/acpi/parser/psparse.c
index 76d4d640d83c..7cfa7eb0dfc7 100644
--- a/drivers/acpi/parser/psparse.c
+++ b/drivers/acpi/parser/psparse.c
@@ -503,22 +503,23 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
} else if (status == AE_CTRL_TERMINATE) {
status = AE_OK;
} else if ((status != AE_OK) && (walk_state->method_desc)) {
- ACPI_REPORT_METHOD_ERROR("Method execution failed",
- walk_state->method_node, NULL,
- status);
+ /* Either the method parse or actual execution failed */
- /* Ensure proper cleanup */
-
- walk_state->parse_flags |= ACPI_PARSE_EXECUTE;
+ ACPI_REPORT_METHOD_ERROR
+ ("Method parse/execution failed",
+ walk_state->method_node, NULL, status);
/* Check for possible multi-thread reentrancy problem */
if ((status == AE_ALREADY_EXISTS) &&
(!walk_state->method_desc->method.semaphore)) {
/*
- * This method is marked not_serialized, but it tried to create
+ * Method tried to create an object twice. The probable cause is
+ * that the method cannot handle reentrancy.
+ *
+ * The method is marked not_serialized, but it tried to create
* a named object, causing the second thread entrance to fail.
- * We will workaround this by marking the method permanently
+ * Workaround this problem by marking the method permanently
* as Serialized.
*/
walk_state->method_desc->method.method_flags |=
@@ -536,15 +537,22 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
acpi_ds_scope_stack_clear(walk_state);
/*
- * If we just returned from the execution of a control method,
- * there's lots of cleanup to do
+ * If we just returned from the execution of a control method or if we
+ * encountered an error during the method parse phase, there's lots of
+ * cleanup to do
*/
- if ((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) ==
- ACPI_PARSE_EXECUTE) {
+ if (((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) ==
+ ACPI_PARSE_EXECUTE) || (ACPI_FAILURE(status))) {
if (walk_state->method_desc) {
/* Decrement the thread count on the method parse tree */
- walk_state->method_desc->method.thread_count--;
+ if (walk_state->method_desc->method.
+ thread_count) {
+ walk_state->method_desc->method.
+ thread_count--;
+ } else {
+ ACPI_REPORT_ERROR(("Invalid zero thread count in method\n"));
+ }
}
acpi_ds_terminate_control_method(walk_state);
@@ -553,7 +561,6 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state)
/* Delete this walk state and all linked control states */
acpi_ps_cleanup_scope(&walk_state->parser_state);
-
previous_walk_state = walk_state;
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,