From mboxrd@z Thu Jan 1 00:00:00 1970 From: Salil Mehta Subject: [PATCH net-next 02/12] net: hns3: Add unlikely for buf_num check Date: Wed, 19 Sep 2018 18:29:48 +0100 Message-ID: <20180919172958.12992-3-salil.mehta@huawei.com> References: <20180919172958.12992-1-salil.mehta@huawei.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , , , , , To: Return-path: In-Reply-To: <20180919172958.12992-1-salil.mehta@huawei.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Peng Li This patch adds unlikely for buf_num check. Signed-off-by: Peng Li Signed-off-by: Salil Mehta --- drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index 052b7fb..837c6d6 100644 --- 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; -- 2.7.4