net: hns3: Add unlikely for buf_num check

This patch adds unlikely for buf_num check.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 052b7fb..837c6d6 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -1074,7 +1074,7 @@ static int hns3_nic_maybe_stop_tx(struct sk_buff **out_skb, int *bnum,
        /* No. of segments (plus a header) */
        buf_num = skb_shinfo(skb)->nr_frags + 1;
 
-       if (buf_num > ring_space(ring))
+       if (unlikely(ring_space(ring) < buf_num))
                return -EBUSY;
 
        *bnum = buf_num;