From 6104ca87e12a5119d3e53e926bb6fe468bb328e2 Mon Sep 17 00:00:00 2001 From: liuzhongzhu Date: Sat, 2 Feb 2019 22:39:36 +0800 Subject: [PATCH] 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 Signed-off-by: Peng Li Signed-off-by: Huazhong Tan Signed-off-by: David S. Miller --- drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c | 4 ++-- 1 file 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++; } -- 2.11.0