linux-kernel - [PATCH net-next 05/10] net: hns3: using modulo for cyclic counters in hclge_cmd

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Message-ID: <1530271385-49668-6-git-send-email-lipeng321@huawei.com>
Date:   Fri, 29 Jun 2018 19:23:00 +0800
From:   Peng Li <lipeng321@...wei.com>
To:     <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linuxarm@...wei.com>, <yisen.zhuang@...wei.com>,
        <salil.mehta@...wei.com>, <lipeng321@...wei.com>
Subject: [PATCH net-next 05/10] net: hns3: using modulo for cyclic counters in hclge_cmd_send

From: Huazhong Tan <tanhuazhong@...wei.com>

There are some codes in hclge_cmd.c which can be simplified by
used %= operator.

Signed-off-by: Huazhong Tan <tanhuazhong@...wei.com>
Signed-off-by: Peng Li <lipeng321@...wei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
index 0839e84..28556a9 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c
@@ -228,8 +228,7 @@ 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)
-			hw->cmq.csq.next_to_use = 0;
+		hw->cmq.csq.next_to_use %= hw->cmq.csq.desc_num;
 		handle++;
 	}
 
@@ -269,8 +268,7 @@ int hclge_cmd_send(struct hclge_hw *hw, struct hclge_desc *desc, int num)
 			hw->cmq.last_status = desc_ret;
 			ntc++;
 			handle++;
-			if (ntc == hw->cmq.csq.desc_num)
-				ntc = 0;
+			ntc %= hw->cmq.csq.desc_num;
 		}
 	}
 
-- 
1.9.1