linux-kernel - [PATCH] net: iucv: Use FIELD_SIZEOF directly instead of reimplementing its function

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Message-ID: <1537350733-44276-1-git-send-email-zhongjiang@huawei.com>
Date:   Wed, 19 Sep 2018 17:52:13 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     <davem@...emloft.net>
CC:     <ubraun@...ux.ibm.com>, <jwi@...ux.ibm.com>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] net: iucv: Use FIELD_SIZEOF directly instead of reimplementing its function

FIELD_SIZEOF is defined as a macro to calculate the specified vaule. Therefore,
We prefer to use the macro rather than calculating its vaule.

Signed-off-by: zhong jiang <zhongjiang@...wei.com>
---
 net/iucv/af_iucv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index e2f16a0..5b68ee9 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -48,7 +48,7 @@
 static const u8 iprm_shutdown[8] =
 	{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01};
 
-#define TRGCLS_SIZE	(sizeof(((struct iucv_message *)0)->class))
+#define TRGCLS_SIZE	FIELD_SIZEOF(struct iucv_message, class)
 
 #define __iucv_sock_wait(sk, condition, timeo, ret)			\
 do {									\
-- 
1.7.12.4