netdev - [PATCH net-next 1/8] atm: use min() to simplify the code

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Message-ID: <20240822133908.1042240-2-lizetao1@huawei.com>
Date: Thu, 22 Aug 2024 21:39:01 +0800
From: Li Zetao <lizetao1@...wei.com>
To: <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
	<pabeni@...hat.com>, <marcel@...tmann.org>, <johan.hedberg@...il.com>,
	<luiz.dentz@...il.com>, <idryomov@...il.com>, <xiubli@...hat.com>,
	<dsahern@...nel.org>, <trondmy@...nel.org>, <anna@...nel.org>,
	<chuck.lever@...cle.com>, <jlayton@...nel.org>, <neilb@...e.de>,
	<okorniev@...hat.com>, <Dai.Ngo@...cle.com>, <tom@...pey.com>,
	<jmaloy@...hat.com>, <ying.xue@...driver.com>, <lizetao1@...wei.com>,
	<linux@...blig.org>, <jacob.e.keller@...el.com>, <willemb@...gle.com>,
	<kuniyu@...zon.com>, <wuyun.abel@...edance.com>, <quic_abchauha@...cinc.com>,
	<gouhao@...ontech.com>
CC: <netdev@...r.kernel.org>, <linux-bluetooth@...r.kernel.org>,
	<ceph-devel@...r.kernel.org>, <linux-nfs@...r.kernel.org>,
	<tipc-discussion@...ts.sourceforge.net>
Subject: [PATCH net-next 1/8] atm: use min() to simplify the code

When copying data to user, it needs to determine the copy length.
It is easier to understand using min() here.

Signed-off-by: Li Zetao <lizetao1@...wei.com>
---
 net/atm/addr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/atm/addr.c b/net/atm/addr.c
index 0530b63f509a..6c4c942b2cb9 100644
--- a/net/atm/addr.c
+++ b/net/atm/addr.c
@@ -136,7 +136,7 @@ int atm_get_addr(struct atm_dev *dev, struct sockaddr_atmsvc __user * buf,
 	unsigned long flags;
 	struct atm_dev_addr *this;
 	struct list_head *head;
-	int total = 0, error;
+	size_t total = 0, error;
 	struct sockaddr_atmsvc *tmp_buf, *tmp_bufp;
 
 	spin_lock_irqsave(&dev->lock, flags);
@@ -155,7 +155,7 @@ int atm_get_addr(struct atm_dev *dev, struct sockaddr_atmsvc __user * buf,
 	    memcpy(tmp_bufp++, &this->addr, sizeof(struct sockaddr_atmsvc));
 	spin_unlock_irqrestore(&dev->lock, flags);
 	error = total > size ? -E2BIG : total;
-	if (copy_to_user(buf, tmp_buf, total < size ? total : size))
+	if (copy_to_user(buf, tmp_buf, min(total, size)))
 		error = -EFAULT;
 	kfree(tmp_buf);
 	return error;
-- 
2.34.1