drivers/net: fix comparisons of unsigned < 0

Recent gcc versions emit warnings when unsigned variables are compared < 0 or >= 0.

Signed-off-by: Bill Nottingham <notting@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

3 files changed, 4 insertions, 6 deletions

diff --git a/drivers/net/mlx4/qp.c b/drivers/net/mlx4/qp.c
index 7f8b7d55b6e1..492cfaaaa75c 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 75102d30730f..05e0577a0e10 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 861729806dc1..d380e0b3f05a 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);