linux-kernel - [PATCH 4/8] : Use FIELD

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Message-ID: <Pine.LNX.4.64.0802102111270.23906@ask.diku.dk>
Date:	Sun, 10 Feb 2008 21:12:29 +0100 (CET)
From:	Julia Lawall <julia@...u.dk>
To:	e1000-devel@...ts.sourceforge.net, john.ronciak@...el.com,
	jeffrey.t.kirsher@...el.com
Cc:	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH 4/8] : Use FIELD_SIZEOF

From: Julia Lawall <julia@...u.dk>

Robert P.J. Day proposed to use the macro FIELD_SIZEOF in replace of code
that matches its definition.

The modification was made using the following semantic patch
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@haskernel@
@@

#include <linux/kernel.h>

@depends on haskernel@
type t;
identifier f;
@@

- (sizeof(((t*)0)->f))
+ FIELD_SIZEOF(t, f)

@depends on haskernel@
type t;
identifier f;
@@

- sizeof(((t*)0)->f)
+ FIELD_SIZEOF(t, f)
// </smpl>

Signed-off-by: Julia Lawall <julia@...u.dk>

---

diff -u -p a/drivers/net/ixgb/ixgb_ethtool.c b/drivers/net/ixgb/ixgb_ethtool.c
--- a/drivers/net/ixgb/ixgb_ethtool.c 2007-11-08 18:33:36.000000000 +0100
+++ b/drivers/net/ixgb/ixgb_ethtool.c 2008-02-10 17:59:49.000000000 +0100
@@ -49,7 +49,7 @@ struct ixgb_stats {
 	int stat_offset;
 };
 
-#define IXGB_STAT(m) sizeof(((struct ixgb_adapter *)0)->m), \
+#define IXGB_STAT(m) FIELD_SIZEOF(struct ixgb_adapter, m), \
 		      offsetof(struct ixgb_adapter, m)
 static struct ixgb_stats ixgb_gstrings_stats[] = {
 	{"rx_packets", IXGB_STAT(net_stats.rx_packets)},
--
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