1185 	if (param->fault_param) {  in iommu_register_device_fault_handler()
1191 	param->fault_param = kzalloc(sizeof(*param->fault_param), GFP_KERNEL);  in iommu_register_device_fault_handler()
1192 	if (!param->fault_param) {  in iommu_register_device_fault_handler()
1197 	param->fault_param->handler = handler;  in iommu_register_device_fault_handler()
1198 	param->fault_param->data = data;  in iommu_register_device_fault_handler()
1199 	mutex_init(&param->fault_param->lock);  in iommu_register_device_fault_handler()
1200 	INIT_LIST_HEAD(&param->fault_param->faults);  in iommu_register_device_fault_handler()
1228 	if (!param->fault_param)  in iommu_unregister_device_fault_handler()
1232 	if (!list_empty(&param->fault_param->faults)) {  in iommu_unregister_device_fault_handler()
1237 	kfree(param->fault_param);  in iommu_unregister_device_fault_handler()
1238 	param->fault_param = NULL;  in iommu_unregister_device_fault_handler()
1270 	fparam = param->fault_param;  in iommu_report_device_fault()
1316 	if (!param || !param->fault_param)  in iommu_page_response()
1324 	mutex_lock(&param->fault_param->lock);  in iommu_page_response()
1325 	if (list_empty(&param->fault_param->faults)) {  in iommu_page_response()
1333 	list_for_each_entry(evt, &param->fault_param->faults, list) {  in iommu_page_response()
1361 	mutex_unlock(&param->fault_param->lock);  in iommu_page_response()