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

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Message-ID: <1457409147-77086-5-git-send-email-lisheng011@huawei.com>
Date:	Tue, 8 Mar 2016 11:52:27 +0800
From:	Lisheng <lisheng011@...wei.com>
To:	<davem@...emloft.net>
CC:	<yisen.zhuang@...wei.com>, <yankejian@...wei.com>,
	<xieqianqian@...wei.com>, <huangdaode@...ilicon.com>,
	<salil.mehta@...wei.com>, <andriy.shevchenko@...ux.intel.com>,
	<netdev@...r.kernel.org>, <haifeng.wei@...wei.com>,
	<charles.chenxin@...wei.com>, <linuxarm@...wei.com>
Subject: [PATCH net 4/4] net: hns: remove useless head=ring->next_to_clean

From: Qianqian Xie <xieqianqian@...wei.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 <xieqianqian@...wei.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