383     ec_master_foe_request_t *request, *next;

   383     ec_foe_request_t *request;

   384 

   384 

   385     // search the first request to be processed

   385     if (list_empty(&slave->foe_requests)) {

   386     list_for_each_entry_safe(request, next, &slave->foe_requests, list) {

   386         return 0;

   387         if (slave->current_state & EC_SLAVE_STATE_ACK_ERR) {

   387     }

   388             EC_SLAVE_WARN(slave, "Aborting FoE request,"

   388 

   389                     " slave has error flag set.\n");

   389     // take the first request to be processed

   390             request->req.state = EC_INT_REQUEST_FAILURE;

   390     request = list_entry(slave->foe_requests.next, ec_foe_request_t, list);

   391             wake_up(&slave->sdo_queue);

   391     list_del_init(&request->list); // dequeue

   392             fsm->sdo_request = NULL;

   392 

   393             fsm->state = ec_fsm_slave_state_idle;

   393     if (slave->current_state & EC_SLAVE_STATE_ACK_ERR) {

   394             return 0;

   394         EC_SLAVE_WARN(slave, "Aborting FoE request,"

   395         }

   395                 " slave has error flag set.\n");

   396         list_del_init(&request->list); // dequeue

   396         request->state = EC_INT_REQUEST_FAILURE;

   397         request->req.state = EC_INT_REQUEST_BUSY;

   397         wake_up(&slave->sdo_queue);

   398 

   398         return 0;

   399         EC_SLAVE_DBG(slave, 1, "Processing FoE request.\n");

   399     }

   400 

   400 

   401         fsm->foe_request = &request->req;

   401     request->state = EC_INT_REQUEST_BUSY;

   402         fsm->state = ec_fsm_slave_state_foe_request;

   402 

   403         ec_fsm_foe_transfer(&fsm->fsm_foe, slave, &request->req);

   403     EC_SLAVE_DBG(slave, 1, "Processing FoE request.\n");

   404         ec_fsm_foe_exec(&fsm->fsm_foe);

   404 

   405         ec_master_queue_external_datagram(fsm->slave->master, fsm->datagram);

   405     fsm->foe_request = request;

   406         return 1;

   406     fsm->state = ec_fsm_slave_state_foe_request;

   407     }

   407     ec_fsm_foe_transfer(&fsm->fsm_foe, slave, request);

   408     return 0;

   408     ec_fsm_foe_exec(&fsm->fsm_foe);

   409     ec_master_queue_external_datagram(fsm->slave->master, fsm->datagram);

   410     return 1;