diff --git a/lib/librte_eventdev/rte_event_eth_tx_adapter.h b/lib/librte_eventdev/rte_event_eth_tx_adapter.h
index 9bed12b..c848261 100644
--- a/lib/librte_eventdev/rte_event_eth_tx_adapter.h
+++ b/lib/librte_eventdev/rte_event_eth_tx_adapter.h
@@ -332,10 +332,10 @@ struct rte_event_eth_tx_adapter_stats {
  *   *rte_event*. If the return value is less than *nb_events*, the remaining
  *   events at the end of ev[] are not consumed and the caller has to take care
  *   of them, and rte_errno is set accordingly. Possible errno values include:
- *   - -EINVAL  The port ID is invalid, device ID is invalid, an event's queue
+ *   - EINVAL   The port ID is invalid, device ID is invalid, an event's queue
  *              ID is invalid, or an event's sched type doesn't match the
  *              capabilities of the destination queue.
- *   - -ENOSPC  The event port was backpressured and unable to enqueue
+ *   - ENOSPC   The event port was backpressured and unable to enqueue
  *              one or more events. This error code is only applicable to
  *              closed systems.
  */
@@ -350,12 +350,12 @@ struct rte_event_eth_tx_adapter_stats {
 #ifdef RTE_LIBRTE_EVENTDEV_DEBUG
 	if (dev_id >= RTE_EVENT_MAX_DEVS ||
 		!rte_eventdevs[dev_id].attached) {
-		rte_errno = -EINVAL;
+		rte_errno = EINVAL;
 		return 0;
 	}
 
 	if (port_id >= dev->data->nb_ports) {
-		rte_errno = -EINVAL;
+		rte_errno = EINVAL;
 		return 0;
 	}
 #endif
diff --git a/lib/librte_eventdev/rte_event_timer_adapter.c b/lib/librte_eventdev/rte_event_timer_adapter.c
index 459bc47..5ce399e 100644
--- a/lib/librte_eventdev/rte_event_timer_adapter.c
+++ b/lib/librte_eventdev/rte_event_timer_adapter.c
@@ -192,17 +192,17 @@ struct rte_event_timer_adapter *
 						   &adapter->data->caps,
 						   &adapter->ops);
 	if (ret < 0) {
-		rte_errno = ret;
+		rte_errno = -ret;
 		goto free_memzone;
 	}
 
 	if (!(adapter->data->caps &
 	      RTE_EVENT_TIMER_ADAPTER_CAP_INTERNAL_PORT)) {
-		FUNC_PTR_OR_NULL_RET_WITH_ERRNO(conf_cb, -EINVAL);
+		FUNC_PTR_OR_NULL_RET_WITH_ERRNO(conf_cb, EINVAL);
 		ret = conf_cb(adapter->data->id, adapter->data->event_dev_id,
 			      &adapter->data->event_port_id, conf_arg);
 		if (ret < 0) {
-			rte_errno = ret;
+			rte_errno = -ret;
 			goto free_memzone;
 		}
 	}
@@ -214,10 +214,10 @@ struct rte_event_timer_adapter *
 		adapter->ops = &swtim_ops;
 
 	/* Allow driver to do some setup */
-	FUNC_PTR_OR_NULL_RET_WITH_ERRNO(adapter->ops->init, -ENOTSUP);
+	FUNC_PTR_OR_NULL_RET_WITH_ERRNO(adapter->ops->init, ENOTSUP);
 	ret = adapter->ops->init(adapter);
 	if (ret < 0) {
-		rte_errno = ret;
+		rte_errno = -ret;
 		goto free_memzone;
 	}
 
@@ -509,11 +509,11 @@ struct event_buffer {
 	*nb_events_flushed = rte_event_enqueue_burst(dev_id, port_id,
 						     &events[tail_idx], n);
 	if (*nb_events_flushed != n) {
-		if (rte_errno == -EINVAL) {
+		if (rte_errno == EINVAL) {
 			EVTIM_LOG_ERR("failed to enqueue invalid event - "
 				      "dropping it");
 			(*nb_events_inv)++;
-		} else if (rte_errno == -ENOSPC)
+		} else if (rte_errno == ENOSPC)
 			rte_pause();
 	}
 
@@ -832,7 +832,7 @@ struct swtim {
 	if (ret < 0) {
 		if (ret != -EALREADY) {
 			EVTIM_LOG_ERR("failed to initialize timer subsystem");
-			rte_errno = ret;
+			rte_errno = -ret;
 			goto free_mempool;
 		}
 	}
@@ -840,7 +840,7 @@ struct swtim {
 	ret = rte_timer_data_alloc(&sw->timer_data_id);
 	if (ret < 0) {
 		EVTIM_LOG_ERR("failed to allocate timer data instance");
-		rte_errno = ret;
+		rte_errno = -ret;
 		goto free_mempool;
 	}
 
diff --git a/lib/librte_eventdev/rte_eventdev.c b/lib/librte_eventdev/rte_eventdev.c
index cc3199f..f44c869 100644
--- a/lib/librte_eventdev/rte_eventdev.c
+++ b/lib/librte_eventdev/rte_eventdev.c
@@ -889,18 +889,18 @@
 	uint16_t *links_map;
 	int i, diag;
 
-	RTE_EVENTDEV_VALID_DEVID_OR_ERRNO_RET(dev_id, -EINVAL, 0);
+	RTE_EVENTDEV_VALID_DEVID_OR_ERRNO_RET(dev_id, EINVAL, 0);
 	dev = &rte_eventdevs[dev_id];
 
 	if (*dev->dev_ops->port_link == NULL) {
 		RTE_EDEV_LOG_ERR("Function not supported\n");
-		rte_errno = -ENOTSUP;
+		rte_errno = ENOTSUP;
 		return 0;
 	}
 
 	if (!is_valid_port(dev, port_id)) {
 		RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
-		rte_errno = -EINVAL;
+		rte_errno = EINVAL;
 		return 0;
 	}
 
@@ -921,7 +921,7 @@
 
 	for (i = 0; i < nb_links; i++)
 		if (queues[i] >= dev->data->nb_queues) {
-			rte_errno = -EINVAL;
+			rte_errno = EINVAL;
 			return 0;
 		}
 
@@ -948,18 +948,18 @@
 	int i, diag, j;
 	uint16_t *links_map;
 
-	RTE_EVENTDEV_VALID_DEVID_OR_ERRNO_RET(dev_id, -EINVAL, 0);
+	RTE_EVENTDEV_VALID_DEVID_OR_ERRNO_RET(dev_id, EINVAL, 0);
 	dev = &rte_eventdevs[dev_id];
 
 	if (*dev->dev_ops->port_unlink == NULL) {
 		RTE_EDEV_LOG_ERR("Function not supported");
-		rte_errno = -ENOTSUP;
+		rte_errno = ENOTSUP;
 		return 0;
 	}
 
 	if (!is_valid_port(dev, port_id)) {
 		RTE_EDEV_LOG_ERR("Invalid port_id=%" PRIu8, port_id);
-		rte_errno = -EINVAL;
+		rte_errno = EINVAL;
 		return 0;
 	}
 
@@ -988,7 +988,7 @@
 	nb_unlinks = j;
 	for (i = 0; i < nb_unlinks; i++)
 		if (queues[i] >= dev->data->nb_queues) {
-			rte_errno = -EINVAL;
+			rte_errno = EINVAL;
 			return 0;
 		}
 
diff --git a/lib/librte_eventdev/rte_eventdev.h b/lib/librte_eventdev/rte_eventdev.h
index 927f43c..5044a13 100644
--- a/lib/librte_eventdev/rte_eventdev.h
+++ b/lib/librte_eventdev/rte_eventdev.h
@@ -1318,12 +1318,12 @@ struct rte_eventdev {
 
 #ifdef RTE_LIBRTE_EVENTDEV_DEBUG
 	if (dev_id >= RTE_EVENT_MAX_DEVS || !rte_eventdevs[dev_id].attached) {
-		rte_errno = -EINVAL;
+		rte_errno = EINVAL;
 		return 0;
 	}
 
 	if (port_id >= dev->data->nb_ports) {
-		rte_errno = -EINVAL;
+		rte_errno = EINVAL;
 		return 0;
 	}
 #endif
@@ -1372,10 +1372,10 @@ struct rte_eventdev {
  *   *rte_event*. If the return value is less than *nb_events*, the remaining
  *   events at the end of ev[] are not consumed and the caller has to take care
  *   of them, and rte_errno is set accordingly. Possible errno values include:
- *   - -EINVAL  The port ID is invalid, device ID is invalid, an event's queue
+ *   - EINVAL   The port ID is invalid, device ID is invalid, an event's queue
  *              ID is invalid, or an event's sched type doesn't match the
  *              capabilities of the destination queue.
- *   - -ENOSPC  The event port was backpressured and unable to enqueue
+ *   - ENOSPC   The event port was backpressured and unable to enqueue
  *              one or more events. This error code is only applicable to
  *              closed systems.
  * @see rte_event_port_attr_get(), RTE_EVENT_PORT_ATTR_ENQ_DEPTH
@@ -1422,10 +1422,10 @@ struct rte_eventdev {
  *   *rte_event*. If the return value is less than *nb_events*, the remaining
  *   events at the end of ev[] are not consumed and the caller has to take care
  *   of them, and rte_errno is set accordingly. Possible errno values include:
- *   - -EINVAL  The port ID is invalid, device ID is invalid, an event's queue
+ *   - EINVAL   The port ID is invalid, device ID is invalid, an event's queue
  *              ID is invalid, or an event's sched type doesn't match the
  *              capabilities of the destination queue.
- *   - -ENOSPC  The event port was backpressured and unable to enqueue
+ *   - ENOSPC   The event port was backpressured and unable to enqueue
  *              one or more events. This error code is only applicable to
  *              closed systems.
  * @see rte_event_port_attr_get(), RTE_EVENT_PORT_ATTR_ENQ_DEPTH
@@ -1473,10 +1473,10 @@ struct rte_eventdev {
  *   *rte_event*. If the return value is less than *nb_events*, the remaining
  *   events at the end of ev[] are not consumed and the caller has to take care
  *   of them, and rte_errno is set accordingly. Possible errno values include:
- *   - -EINVAL  The port ID is invalid, device ID is invalid, an event's queue
+ *   - EINVAL   The port ID is invalid, device ID is invalid, an event's queue
  *              ID is invalid, or an event's sched type doesn't match the
  *              capabilities of the destination queue.
- *   - -ENOSPC  The event port was backpressured and unable to enqueue
+ *   - ENOSPC   The event port was backpressured and unable to enqueue
  *              one or more events. This error code is only applicable to
  *              closed systems.
  * @see rte_event_port_attr_get(), RTE_EVENT_PORT_ATTR_ENQ_DEPTH
@@ -1595,12 +1595,12 @@ struct rte_eventdev {
 
 #ifdef RTE_LIBRTE_EVENTDEV_DEBUG
 	if (dev_id >= RTE_EVENT_MAX_DEVS || !rte_eventdevs[dev_id].attached) {
-		rte_errno = -EINVAL;
+		rte_errno = EINVAL;
 		return 0;
 	}
 
 	if (port_id >= dev->data->nb_ports) {
-		rte_errno = -EINVAL;
+		rte_errno = EINVAL;
 		return 0;
 	}
 #endif
@@ -1673,9 +1673,9 @@ struct rte_eventdev {
  * of link[] are not established, and the caller has to take care of them.
  * If return value is less than *nb_links* then implementation shall update the
  * rte_errno accordingly, Possible rte_errno values are
- * (-EDQUOT) Quota exceeded(Application tried to link the queue configured with
+ * (EDQUOT) Quota exceeded(Application tried to link the queue configured with
  *  RTE_EVENT_QUEUE_CFG_SINGLE_LINK to more than one event ports)
- * (-EINVAL) Invalid parameter
+ * (EINVAL) Invalid parameter
  *
  */
 int
@@ -1720,7 +1720,7 @@ struct rte_eventdev {
  * end of queues[] are not unlinked, and the caller has to take care of them.
  * If return value is less than *nb_unlinks* then implementation shall update
  * the rte_errno accordingly, Possible rte_errno values are
- * (-EINVAL) Invalid parameter
+ * (EINVAL) Invalid parameter
  */
 int
 rte_event_port_unlink(uint8_t dev_id, uint8_t port_id,
