diff --git a/drivers/net/mlx4/qp.c b/drivers/net/mlx4/qp.c
index 7f8b7d55b6e110ba5dbc49d0917e9e3fbb592ad4..492cfaaaa75cbf3b687214df37462f268118ce7e 100644
--- a/drivers/net/mlx4/qp.c
+++ b/drivers/net/mlx4/qp.c
@@ -113,8 +113,7 @@ int mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
 	struct mlx4_cmd_mailbox *mailbox;
 	int ret = 0;
 
-	if (cur_state < 0 || cur_state >= MLX4_QP_NUM_STATE ||
-	    new_state < 0 || cur_state >= MLX4_QP_NUM_STATE ||
+	if (cur_state >= MLX4_QP_NUM_STATE || cur_state >= MLX4_QP_NUM_STATE ||
 	    !op[cur_state][new_state])
 		return -EINVAL;
 
diff --git a/drivers/net/netxen/netxen_nic_niu.c b/drivers/net/netxen/netxen_nic_niu.c
index 75102d30730f0cdecf3942485211cfbcfe5eb59f..05e0577a0e103b55a2c8431595ebc2cb679a4675 100644
--- a/drivers/net/netxen/netxen_nic_niu.c
+++ b/drivers/net/netxen/netxen_nic_niu.c
@@ -724,7 +724,7 @@ int netxen_niu_disable_gbe_port(struct netxen_adapter *adapter)
 	__u32 mac_cfg0;
 	u32 port = physical_port[adapter->portnum];
 
-	if ((port < 0) || (port > NETXEN_NIU_MAX_GBE_PORTS))
+	if (port > NETXEN_NIU_MAX_GBE_PORTS)
 		return -EINVAL;
 	mac_cfg0 = 0;
 	netxen_gb_soft_reset(mac_cfg0);
@@ -757,7 +757,7 @@ int netxen_niu_set_promiscuous_mode(struct netxen_adapter *adapter,
 	__u32 reg;
 	u32 port = physical_port[adapter->portnum];
 
-	if ((port < 0) || (port > NETXEN_NIU_MAX_GBE_PORTS))
+	if (port > NETXEN_NIU_MAX_GBE_PORTS)
 		return -EINVAL;
 
 	/* save previous contents */
@@ -894,7 +894,7 @@ int netxen_niu_xg_set_promiscuous_mode(struct netxen_adapter *adapter,
 	__u32 reg;
 	u32 port = physical_port[adapter->portnum];
 
-	if ((port < 0) || (port > NETXEN_NIU_MAX_XG_PORTS))
+	if (port > NETXEN_NIU_MAX_XG_PORTS)
 		return -EINVAL;
 
 	if (netxen_nic_hw_read_wx(adapter,
diff --git a/drivers/net/tulip/de2104x.c b/drivers/net/tulip/de2104x.c
index 861729806dc19cb3a0c6a9a6ad0480fe20dc22ef..d380e0b3f05a1fe0925eaee771b37e324dc08d70 100644
--- a/drivers/net/tulip/de2104x.c
+++ b/drivers/net/tulip/de2104x.c
@@ -785,7 +785,6 @@ static void __de_set_rx_mode (struct net_device *dev)
 
 	de->tx_head = NEXT_TX(entry);
 
-	BUG_ON(TX_BUFFS_AVAIL(de) < 0);
 	if (TX_BUFFS_AVAIL(de) == 0)
 		netif_stop_queue(dev);