From: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Date: Thu, 12 May 2022 06:09:05 +0000 (+0800)
Subject: net: ethernet: Use swap() instead of open coding it
X-Git-Tag: baikal/mips/sdk6.1~5698^2~124
X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=36865ec5db7e937c0cba236e3ae0356c9c943193;p=kernel.git

net: ethernet: Use swap() instead of open coding it

Clean the following coccicheck warning:

./drivers/net/ethernet/sunplus/spl2sw_driver.c:217:27-28: WARNING
opportunity for swap().

./drivers/net/ethernet/sunplus/spl2sw_driver.c:222:27-28: WARNING
opportunity for swap().

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/sunplus/spl2sw_driver.c b/drivers/net/ethernet/sunplus/spl2sw_driver.c
index 8320fa833d3e5..1cb7076f946d6 100644
--- a/drivers/net/ethernet/sunplus/spl2sw_driver.c
+++ b/drivers/net/ethernet/sunplus/spl2sw_driver.c
@@ -204,28 +204,16 @@ static const struct net_device_ops netdev_ops = {
 
 static void spl2sw_check_mac_vendor_id_and_convert(u8 *mac_addr)
 {
-	u8 tmp;
-
 	/* Byte order of MAC address of some samples are reversed.
 	 * Check vendor id and convert byte order if it is wrong.
 	 * OUI of Sunplus: fc:4b:bc
 	 */
 	if (mac_addr[5] == 0xfc && mac_addr[4] == 0x4b && mac_addr[3] == 0xbc &&
 	    (mac_addr[0] != 0xfc || mac_addr[1] != 0x4b || mac_addr[2] != 0xbc)) {
-		/* Swap mac_addr[0] and mac_addr[5] */
-		tmp = mac_addr[0];
-		mac_addr[0] = mac_addr[5];
-		mac_addr[5] = tmp;
-
-		/* Swap mac_addr[1] and mac_addr[4] */
-		tmp = mac_addr[1];
-		mac_addr[1] = mac_addr[4];
-		mac_addr[4] = tmp;
-
-		/* Swap mac_addr[2] and mac_addr[3] */
-		tmp = mac_addr[2];
-		mac_addr[2] = mac_addr[3];
-		mac_addr[3] = tmp;
+
+		swap(mac_addr[0], mac_addr[5]);
+		swap(mac_addr[1], mac_addr[4]);
+		swap(mac_addr[2], mac_addr[3]);
 	}
 }