linux-kernel - [PATCH net-next] net: tipc: Replace expression with offsetof()

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Date:   Tue, 29 Dec 2020 21:49:04 +0800
From:   Zheng Yongjun <zhengyongjun3@...wei.com>
To:     <jmaloy@...hat.com>, <ying.xue@...driver.com>,
        <davem@...emloft.net>, <kuba@...nel.org>, <netdev@...r.kernel.org>,
        <tipc-discussion@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>
CC:     Zheng Yongjun <zhengyongjun3@...wei.com>
Subject: [PATCH net-next] net: tipc: Replace expression with offsetof()

Use the existing offsetof() macro instead of duplicating code.

Signed-off-by: Zheng Yongjun <zhengyongjun3@...wei.com>
---
 net/tipc/monitor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/tipc/monitor.c b/net/tipc/monitor.c
index 6dce2abf436e..48fac3b17e40 100644
--- a/net/tipc/monitor.c
+++ b/net/tipc/monitor.c
@@ -108,7 +108,7 @@ const int tipc_max_domain_size = sizeof(struct tipc_mon_domain);
  */
 static int dom_rec_len(struct tipc_mon_domain *dom, u16 mcnt)
 {
-	return ((void *)&dom->members - (void *)dom) + (mcnt * sizeof(u32));
+	return (offsetof(struct tipc_mon_domain, members)) + (mcnt * sizeof(u32));
 }
 
 /* dom_size() : calculate size of own domain based on number of peers
-- 
2.22.0