From: liuzhongzhu <liuzhongzhu@huawei.com>
Date: Sat, 2 Feb 2019 22:39:36 +0800
Subject: net: hns3: modify the upper limit judgment condition
Patch-mainline: v5.1-rc1
Git-commit: 6104ca87e12a5119d3e53e926bb6fe468bb328e2
References: bsc#1126390
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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
@@ -198,7 +198,7 @@ static int hclge_cmd_check_retval(struct
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)))
@@ -255,7 +255,7 @@ int hclge_cmd_send(struct hclge_hw *hw,
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++;
}