[PATCH net 4/4] net: hns: remove useless head=ring->next_to_clean

[Lisheng]

From: Qianqian Xie <xieqianq...@huawei.com>

The variable head in hns_nic_tx_fini_pro has read a value,
but the value is not used. The patch will solve it.

Signed-off-by: Qianqian Xie <xieqianq...@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_enet.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c 
b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index 3f77ff7..7b4ec2f 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -901,10 +901,8 @@ static int hns_nic_tx_poll_one(struct hns_nic_ring_data 
*ring_data,
 static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
 {
        struct hnae_ring *ring = ring_data->ring;
-       int head = ring->next_to_clean;
 
-       /* for hardware bug fixed */
-       head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
+       int head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
 
        if (head != ring->next_to_clean) {
                ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
-- 
1.9.1