net: ethernet: mlx4: Avoid assigning a value to ring_cons but not used it anymore in mlx4_en_xmit()
We found a set but not used variable 'ring_cons' in mlx4_en_xmit(), it will
cause a warning when build the kernel. And after checking the commit record
of this function, we found that it was introduced by a previous patch.
So, We delete this redundant assignment code.
Fixes: 488a9b48e3
("net/mlx4_en: Wake TX queues only when there's enough room")
Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1075,7 +1075,6 @@ netdev_tx_t mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
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*/
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smp_rmb();
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ring_cons = READ_ONCE(ring->cons);
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if (unlikely(!mlx4_en_is_tx_ring_full(ring))) {
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netif_tx_wake_queue(ring->tx_queue);
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ring->wake_queue++;
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