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net: z85230: replace comparison to NULL with "!skb" 

According to the chackpatch.pl, comparison to NULL could
be written "!skb".

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Peng Li 2021-06-15 10:43:39 +08:00 committed by David S. Miller
parent e07a1f9cbd
commit b55932bcfa
1 changed files with 7 additions and 7 deletions
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14
drivers/net/wan/z85230.c
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@ -851,12 +851,12 @@ int z8530_sync_dma_open(struct net_device *dev, struct z8530_channel *c)
return -EMSGSIZE;
c->rx_buf[0]=(void *)get_zeroed_page(GFP_KERNEL|GFP_DMA);
if(c->rx_buf[0]==NULL)
if (!c->rx_buf[0])
return -ENOBUFS;
c->rx_buf[1]=c->rx_buf[0]+PAGE_SIZE/2;
c->tx_dma_buf[0]=(void *)get_zeroed_page(GFP_KERNEL|GFP_DMA);
if(c->tx_dma_buf[0]==NULL)
if (!c->tx_dma_buf[0])
{
free_page((unsigned long)c->rx_buf[0]);
c->rx_buf[0]=NULL;
@ -1039,7 +1039,7 @@ int z8530_sync_txdma_open(struct net_device *dev, struct z8530_channel *c)
return -EMSGSIZE;
c->tx_dma_buf[0]=(void *)get_zeroed_page(GFP_KERNEL|GFP_DMA);
if(c->tx_dma_buf[0]==NULL)
if (!c->tx_dma_buf[0])
return -ENOBUFS;
c->tx_dma_buf[1] = c->tx_dma_buf[0] + PAGE_SIZE/2;
@ -1397,7 +1397,7 @@ static void z8530_tx_begin(struct z8530_channel *c)
c->tx_next_skb=NULL;
c->tx_ptr=c->tx_next_ptr;
if(c->tx_skb==NULL)
if (!c->tx_skb)
{
/* Idle on */
if(c->dma_tx)
@ -1486,7 +1486,7 @@ static void z8530_tx_done(struct z8530_channel *c)
struct sk_buff *skb;
/* Actually this can happen.*/
if (c->tx_skb == NULL)
if (!c->tx_skb)
return;
skb = c->tx_skb;
@ -1589,7 +1589,7 @@ static void z8530_rx_done(struct z8530_channel *c)
*/
skb = dev_alloc_skb(ct);
if (skb == NULL) {
if (!skb) {
c->netdevice->stats.rx_dropped++;
netdev_warn(c->netdevice, "Memory squeeze\n");
} else {
@ -1630,7 +1630,7 @@ static void z8530_rx_done(struct z8530_channel *c)
RT_UNLOCK;
c->skb2 = dev_alloc_skb(c->mtu);
if (c->skb2 == NULL)
if (!c->skb2)
netdev_warn(c->netdevice, "memory squeeze\n");
else
skb_put(c->skb2, c->mtu);