ACPICA: Correctly cleanup after a ACPI table load failure

ACPICA commit ed7769e832de6c7ba90615480d916c85fd100422

If a table load fails, delete all namespace objects created by the
table, otherwise these objects will be uninitialized, causing
problems later. This appears to be a very rare problem.
Also handle the unitialized node problem to prevent possible
faults. ACPICA BZ 1185.

Link: https://github.com/acpica/acpica/commit/ed7769e8
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/exresolv.c

@@ -337,8 +337,9 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
 			 acpi_object_type * return_type,
 			 union acpi_operand_object **return_desc)
 {
-	union acpi_operand_object *obj_desc = (void *)operand;
-	struct acpi_namespace_node *node;
+	union acpi_operand_object *obj_desc = ACPI_CAST_PTR(void, operand);
+	struct acpi_namespace_node *node =
+	    ACPI_CAST_PTR(struct acpi_namespace_node, operand);
 	acpi_object_type type;
 	acpi_status status;
 
@@ -355,9 +356,7 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
 	case ACPI_DESC_TYPE_NAMED:
 
 		type = ((struct acpi_namespace_node *)obj_desc)->type;
-		obj_desc =
-		    acpi_ns_get_attached_object((struct acpi_namespace_node *)
-						obj_desc);
+		obj_desc = acpi_ns_get_attached_object(node);
 
 		/* If we had an Alias node, use the attached object for type info */
 
@@ -368,6 +367,13 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
 							 acpi_namespace_node *)
 							obj_desc);
 		}
+
+		if (!obj_desc) {
+			ACPI_ERROR((AE_INFO,
+				    "[%4.4s] Node is unresolved or uninitialized",
+				    acpi_ut_get_node_name(node)));
+			return_ACPI_STATUS(AE_AML_UNINITIALIZED_NODE);
+		}
 		break;
 
 	default: