linux-kernel - [PATCH v2] w1: w1_therm: use swap() to make code cleaner

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Message-Id: <d687b56df7dc93497bc78e5c337fc05711b5d98a.1636097083.git.yang.guang5@zte.com.cn>
Date:   Fri,  5 Nov 2021 15:32:44 +0800
From:   davidcomponentone@...il.com
To:     dan.carpenter@...cle.com
Cc:     davidcomponentone@...il.com, gregkh@...uxfoundation.org,
        ivan.zaentsev@...enboard.ru, linux-kernel@...r.kernel.org,
        unixbhaskar@...il.com, yang.guang5@....com.cn,
        yangyingliang@...wei.com, zbr@...emap.net, zealci@....com.cn
Subject: [PATCH v2] w1: w1_therm: use swap() to make code cleaner

From: Yang Guang <yang.guang5@....com.cn>

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

Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Yang Guang <yang.guang5@....com.cn>
---
 drivers/w1/slaves/w1_therm.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/w1/slaves/w1_therm.c b/drivers/w1/slaves/w1_therm.c
index ca70c5f03206..565578002d79 100644
--- a/drivers/w1/slaves/w1_therm.c
+++ b/drivers/w1/slaves/w1_therm.c
@@ -1785,7 +1785,7 @@ static ssize_t alarms_store(struct device *device,
 	u8 new_config_register[3];	/* array of data to be written */
 	int temp, ret;
 	char *token = NULL;
-	s8 tl, th, tt;	/* 1 byte per value + temp ring order */
+	s8 tl, th;	/* 1 byte per value + temp ring order */
 	char *p_args, *orig;
 
 	p_args = orig = kmalloc(size, GFP_KERNEL);
@@ -1836,9 +1836,8 @@ static ssize_t alarms_store(struct device *device,
 	th = int_to_short(temp);
 
 	/* Reorder if required th and tl */
-	if (tl > th) {
-		tt = tl; tl = th; th = tt;
-	}
+	if (tl > th)
+		swap(tl, th);
 
 	/*
 	 * Read the scratchpad to change only the required bits
-- 
2.30.2