netdev - [PATCH] net: fddi: use swap() to make code cleaner

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Message-Id: <20211115065826.5221-1-hanyihao@vivo.com>
Date:   Sun, 14 Nov 2021 22:58:16 -0800
From:   Yihao Han <hanyihao@...o.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Yihao Han <hanyihao@...o.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     kernel@...o.com
Subject: [PATCH] net: fddi: use swap() to make code cleaner

Use the macro 'swap()' defined in 'include/linux/minmax.h' to avoid
opencoding it.

Signed-off-by: Yihao Han <hanyihao@...o.com>
---
 drivers/net/fddi/skfp/smt.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/net/fddi/skfp/smt.c b/drivers/net/fddi/skfp/smt.c
index 6b68a53f1b38..72c31f0013ad 100644
--- a/drivers/net/fddi/skfp/smt.c
+++ b/drivers/net/fddi/skfp/smt.c
@@ -1846,10 +1846,10 @@ void smt_swap_para(struct smt_header *sm, int len, int direction)
 	}
 }
 
+
 static void smt_string_swap(char *data, const char *format, int len)
 {
 	const char	*open_paren = NULL ;
-	int	x ;
 
 	while (len > 0  && *format) {
 		switch (*format) {
@@ -1876,19 +1876,13 @@ static void smt_string_swap(char *data, const char *format, int len)
 			len-- ;
 			break ;
 		case 's' :
-			x = data[0] ;
-			data[0] = data[1] ;
-			data[1] = x ;
+			swap(data[0], data[1]) ;
 			data += 2 ;
 			len -= 2 ;
 			break ;
 		case 'l' :
-			x = data[0] ;
-			data[0] = data[3] ;
-			data[3] = x ;
-			x = data[1] ;
-			data[1] = data[2] ;
-			data[2] = x ;
+			swap(data[0], data[3]) ;
+			swap(data[1], data[2]) ;
 			data += 4 ;
 			len -= 4 ;
 			break ;
-- 
2.17.1