replace code with FIELD_SIZEOF

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/e1000/e1000_ethtool.c

@@ -50,7 +50,7 @@ struct e1000_stats {
 	int stat_offset;
 };
 
-#define E1000_STAT(m) sizeof(((struct e1000_adapter *)0)->m), \
+#define E1000_STAT(m) FIELD_SIZEOF(struct e1000_adapter, m), \
 		      offsetof(struct e1000_adapter, m)
 static const struct e1000_stats e1000_gstrings_stats[] = {
 	{ "rx_packets", E1000_STAT(stats.gprc) },

drivers/net/igb/igb_ethtool.c

@@ -43,7 +43,7 @@ struct igb_stats {
 	int stat_offset;
 };
 
-#define IGB_STAT(m) sizeof(((struct igb_adapter *)0)->m), \
+#define IGB_STAT(m) FIELD_SIZEOF(struct igb_adapter, m), \
 		      offsetof(struct igb_adapter, m)
 static const struct igb_stats igb_gstrings_stats[] = {
 	{ "rx_packets", IGB_STAT(stats.gprc) },

drivers/net/ixgb/ixgb_ethtool.c

@@ -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)},