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authorliuzhongzhu <liuzhongzhu@huawei.com>2019-02-02 22:39:36 +0800
committerDavid S. Miller <davem@davemloft.net>2019-02-02 08:24:09 -0800
commit6104ca87e12a5119d3e53e926bb6fe468bb328e2 (patch)
treee076b6565e98e236a78be4564193df305ad0dcf3
parent77af09c6780b1394a1e888a6862d49cadc0247fa (diff)
downloadlinux-stericsson-6104ca87e12a5119d3e53e926bb6fe468bb328e2.tar.gz
net: hns3: modify the upper limit judgment condition
In order to prevent the variable anomaly from being larger than desc_num, the upper limit judgment condition becomes >=. Signed-off-by: liuzhongzhu <liuzhongzhu@huawei.com> Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
index 57c50b947857..1dddfcba41a9 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
@@ -197,7 +197,7 @@ static int hclge_cmd_check_retval(struct hclge_hw *hw, struct hclge_desc *desc,
for (handle = 0; handle < num; handle++) {
desc[handle] = hw->cmq.csq.desc[ntc];
ntc++;
- if (ntc == hw->cmq.csq.desc_num)
+ if (ntc >= hw->cmq.csq.desc_num)
ntc = 0;
}
if (likely(!hclge_is_special_opcode(opcode)))
@@ -254,7 +254,7 @@ int hclge_cmd_send(struct hclge_hw *hw, struct hclge_desc *desc, int num)
desc_to_use = &hw->cmq.csq.desc[hw->cmq.csq.next_to_use];
*desc_to_use = desc[handle];
(hw->cmq.csq.next_to_use)++;
- if (hw->cmq.csq.next_to_use == hw->cmq.csq.desc_num)
+ if (hw->cmq.csq.next_to_use >= hw->cmq.csq.desc_num)
hw->cmq.csq.next_to_use = 0;
handle++;
}