Previously, we'd try to send the local txbuf even though it had not been
written to. Thus strlen() would overrun the buffer, which recent Linux
versions catch in a BUG_ON().
*/
elm->state = ELM_NOTINIT;
elm327_kick_into_cmd_mode(elm);
+
+ return;
} else if (test_and_clear_bit(ELM_TODO_SILENT_MONITOR, &elm->cmds_todo)) {
snprintf(txbuf, sizeof(txbuf), "ATCSM%i\r", !(!(elm->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)));
} else if (test_and_clear_bit(ELM_TODO_RESPONSES, &elm->cmds_todo)) {