[PATCH V2 net-next 04/10] net: z85230: replace comparison to NULL with "!skb"

From: Guangbin Huang
Date: Mon Jun 14 2021 - 22:47:46 EST


From: Peng Li <lipeng321@xxxxxxxxxx>

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

Signed-off-by: Peng Li <lipeng321@xxxxxxxxxx>
Signed-off-by: Guangbin Huang <huangguangbin2@xxxxxxxxxx>
---
drivers/net/wan/z85230.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/net/wan/z85230.c b/drivers/net/wan/z85230.c
index 94ed9a2..0162239 100644
--- a/drivers/net/wan/z85230.c
+++ b/drivers/net/wan/z85230.c
@@ -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);
--
2.8.1