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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>
This commit is contained in:
liuzhongzhu 2019-02-02 22:39:36 +08:00 committed by David S. Miller
parent 77af09c678
commit 6104ca87e1
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
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@ -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++;
}