[PATCH 1/5] net: iucv: Use FIELD_SIZEOF directly instead of reimplementing its function

[zhong jiang]

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

Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx>
---
 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