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net: dnet: remove unused variable 'tx_status 'in dnet_start_xmit() 

Fixes the following W=1 kernel build warning(s):

drivers/net/ethernet/dnet.c:510:6: warning:
 variable 'tx_status' set but not used [-Wunused-but-set-variable]
  u32 tx_status, irq_enable;
      ^~~~~~~~~

After commit 4796417417 ("dnet: Dave DNET ethernet controller driver
(updated)"), variable 'tx_status' is never used in dnet_start_xmit(),
so removing it to avoid build warning.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Zhang Changzhong 2020-09-14 21:08:37 +08:00 committed by David S. Miller
parent 0cbe6a8f08
commit 85743cead5
1 changed files with 4 additions and 4 deletions
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8
drivers/net/ethernet/dnet.c
View File

@ -507,12 +507,12 @@ static netdev_tx_t dnet_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct dnet *bp = netdev_priv(dev);
u32 tx_status, irq_enable;
u32 irq_enable;
unsigned int i, tx_cmd, wrsz;
unsigned long flags;
unsigned int *bufp;
tx_status = dnet_readl(bp, TX_STATUS);
dnet_readl(bp, TX_STATUS);
pr_debug("start_xmit: len %u head %p data %p\n",
skb->len, skb->head, skb->data);
@ -520,7 +520,7 @@ static netdev_tx_t dnet_start_xmit(struct sk_buff *skb, struct net_device *dev)
spin_lock_irqsave(&bp->lock, flags);
tx_status = dnet_readl(bp, TX_STATUS);
dnet_readl(bp, TX_STATUS);
bufp = (unsigned int *)(((unsigned long) skb->data) & ~0x3UL);
wrsz = (u32) skb->len + 3;
@ -542,7 +542,7 @@ static netdev_tx_t dnet_start_xmit(struct sk_buff *skb, struct net_device *dev)
if (dnet_readl(bp, TX_FIFO_WCNT) > DNET_FIFO_TX_DATA_AF_TH) {
netif_stop_queue(dev);
tx_status = dnet_readl(bp, INTR_SRC);
dnet_readl(bp, INTR_SRC);
irq_enable = dnet_readl(bp, INTR_ENB);
irq_enable |= DNET_INTR_ENB_TX_FIFOAE;
dnet_writel(bp, irq_enable, INTR_ENB);