diff --git a/kernel/linux/kni/kni_net.c b/kernel/linux/kni/kni_net.c
index 06310fec57bb..320d51d7fc83 100644
--- a/kernel/linux/kni/kni_net.c
+++ b/kernel/linux/kni/kni_net.c
@@ -401,7 +401,7 @@ kni_net_rx_lo_fifo(struct kni_dev *kni)
 	/* Get the number of entries in rx_q */
 	num_rq = kni_fifo_count(kni->rx_q);
 
-	/* Get the number of free entrie in tx_q */
+	/* Get the number of free entries in tx_q */
 	num_tq = kni_fifo_free_count(kni->tx_q);
 
 	/* Get the number of entries in alloc_q */
@@ -755,6 +755,7 @@ kni_net_config_lo_mode(char *lo_str)
 	} else if (!strcmp(lo_str, "lo_mode_fifo_skb")) {
 		pr_debug("loopback mode=lo_mode_fifo_skb enabled");
 		kni_net_rx_func = kni_net_rx_lo_fifo_skb;
-	} else
-		pr_debug("Incognizant parameter, loopback disabled");
+	} else {
+		pr_debug("Unknown loopback parameter, disabled");
+	}
 }
diff --git a/lib/librte_kni/rte_kni.c b/lib/librte_kni/rte_kni.c
index e29d0cc7df3c..9b6acc382fc3 100644
--- a/lib/librte_kni/rte_kni.c
+++ b/lib/librte_kni/rte_kni.c
@@ -59,7 +59,7 @@ struct rte_kni {
 	uint16_t group_id;                  /**< Group ID of KNI devices */
 	uint32_t slot_id;                   /**< KNI pool slot ID */
 	struct rte_mempool *pktmbuf_pool;   /**< pkt mbuf mempool */
-	unsigned mbuf_size;                 /**< mbuf size */
+	unsigned int mbuf_size;                 /**< mbuf size */
 
 	const struct rte_memzone *m_tx_q;   /**< TX queue memzone */
 	const struct rte_memzone *m_rx_q;   /**< RX queue memzone */
@@ -78,7 +78,7 @@ struct rte_kni {
 	/* For request & response */
 	struct rte_kni_fifo *req_q;         /**< Request queue */
 	struct rte_kni_fifo *resp_q;        /**< Response queue */
-	void * sync_addr;                   /**< Req/Resp Mem address */
+	void *sync_addr;                   /**< Req/Resp Mem address */
 
 	struct rte_kni_ops ops;             /**< operations for request */
 };
@@ -473,7 +473,7 @@ kni_config_promiscusity(uint16_t port_id, uint8_t to_on)
 int
 rte_kni_handle_request(struct rte_kni *kni)
 {
-	unsigned ret;
+	unsigned int ret;
 	struct rte_kni_request *req = NULL;
 
 	if (kni == NULL)
@@ -498,8 +498,8 @@ rte_kni_handle_request(struct rte_kni *kni)
 		break;
 	case RTE_KNI_REQ_CFG_NETWORK_IF: /* Set network interface up/down */
 		if (kni->ops.config_network_if)
-			req->result = kni->ops.config_network_if(\
-					kni->ops.port_id, req->if_up);
+			req->result = kni->ops.config_network_if(kni->ops.port_id,
+								 req->if_up);
 		break;
 	case RTE_KNI_REQ_CHANGE_MAC_ADDR: /* Change MAC Address */
 		if (kni->ops.config_mac_address)
@@ -534,7 +534,7 @@ rte_kni_handle_request(struct rte_kni *kni)
 }
 
 unsigned
-rte_kni_tx_burst(struct rte_kni *kni, struct rte_mbuf **mbufs, unsigned num)
+rte_kni_tx_burst(struct rte_kni *kni, struct rte_mbuf **mbufs, unsigned int num)
 {
 	void *phy_mbufs[num];
 	unsigned int ret;
@@ -552,9 +552,9 @@ rte_kni_tx_burst(struct rte_kni *kni, struct rte_mbuf **mbufs, unsigned num)
 }
 
 unsigned
-rte_kni_rx_burst(struct rte_kni *kni, struct rte_mbuf **mbufs, unsigned num)
+rte_kni_rx_burst(struct rte_kni *kni, struct rte_mbuf **mbufs, unsigned int num)
 {
-	unsigned ret = kni_fifo_get(kni->tx_q, (void **)mbufs, num);
+	unsigned int ret = kni_fifo_get(kni->tx_q, (void **)mbufs, num);
 
 	/* If buffers removed, allocate mbufs and then put them into alloc_q */
 	if (ret)
@@ -605,7 +605,7 @@ kni_allocate_mbufs(struct rte_kni *kni)
 		return;
 	}
 
-	allocq_free = (kni->alloc_q->read - kni->alloc_q->write - 1) \
+	allocq_free = (kni->alloc_q->read - kni->alloc_q->write - 1)
 			& (MAX_MBUF_BURST_NUM - 1);
 	for (i = 0; i < allocq_free; i++) {
 		pkts[i] = rte_pktmbuf_alloc(kni->pktmbuf_pool);
@@ -659,35 +659,35 @@ static enum kni_ops_status
 kni_check_request_register(struct rte_kni_ops *ops)
 {
 	/* check if KNI request ops has been registered*/
-	if( NULL == ops )
+	if (ops == NULL)
 		return KNI_REQ_NO_REGISTER;
 
-	if ((ops->change_mtu == NULL)
-		&& (ops->config_network_if == NULL)
-		&& (ops->config_mac_address == NULL)
-		&& (ops->config_promiscusity == NULL))
+	if (ops->change_mtu == NULL
+	    && ops->config_network_if == NULL
+	    && ops->config_mac_address == NULL
+	    && ops->config_promiscusity == NULL)
 		return KNI_REQ_NO_REGISTER;
 
 	return KNI_REQ_REGISTERED;
 }
 
 int
-rte_kni_register_handlers(struct rte_kni *kni,struct rte_kni_ops *ops)
+rte_kni_register_handlers(struct rte_kni *kni, struct rte_kni_ops *ops)
 {
 	enum kni_ops_status req_status;
 
-	if (NULL == ops) {
+	if (ops == NULL) {
 		RTE_LOG(ERR, KNI, "Invalid KNI request operation.\n");
 		return -1;
 	}
 
-	if (NULL == kni) {
+	if (kni == NULL) {
 		RTE_LOG(ERR, KNI, "Invalid kni info.\n");
 		return -1;
 	}
 
 	req_status = kni_check_request_register(&kni->ops);
-	if ( KNI_REQ_REGISTERED == req_status) {
+	if (req_status == KNI_REQ_REGISTERED) {
 		RTE_LOG(ERR, KNI, "The KNI request operation has already registered.\n");
 		return -1;
 	}
@@ -699,7 +699,7 @@ rte_kni_register_handlers(struct rte_kni *kni,struct rte_kni_ops *ops)
 int
 rte_kni_unregister_handlers(struct rte_kni *kni)
 {
-	if (NULL == kni) {
+	if (kni == NULL) {
 		RTE_LOG(ERR, KNI, "Invalid kni info.\n");
 		return -1;
 	}
