From: Takashi Iwai <tiwai@suse.de>
Self-baked macros cause bunch of compile warnings like below:
  CC [M]  drivers/net/skfp/pmf.o

  CC      net/ipv4/fib_semantics.o

drivers/net/skfp/pmf.c:86: warning: cast from pointer to integer of different size

drivers/net/skfp/pmf.c:87: warning: cast from pointer to integer of different size

...
Use the standard offsetof() macro instead.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Acked-by: Alan Cox <alan@redhat.com>

Cc: Jeff Garzik <jeff@garzik.org>

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

---
 drivers/net/skfp/pmf.c |   29 +++++++++++------------------

 1 file changed, 11 insertions(+), 18 deletions(-)
diff -puN drivers/net/skfp/pmf.c~drivers-net-skfp-pmfc-use-offsetof-macro drivers/net/skfp/pmf.c

--- a/drivers/net/skfp/pmf.c~drivers-net-skfp-pmfc-use-offsetof-macro

+++ a/drivers/net/skfp/pmf.c

@@ -44,17 +44,10 @@ static SMbuf *smt_build_pmf_response(str

 				     int set, int local);

 static int port_to_mib(struct s_smc *smc, int p);
-#define MOFFSS(e)	((int)&(((struct fddi_mib *)0)->e))

-#define MOFFSA(e)	((int) (((struct fddi_mib *)0)->e))

-

-#define MOFFMS(e)	((int)&(((struct fddi_mib_m *)0)->e))

-#define MOFFMA(e)	((int) (((struct fddi_mib_m *)0)->e))

-

-#define MOFFAS(e)	((int)&(((struct fddi_mib_a *)0)->e))

-#define MOFFAA(e)	((int) (((struct fddi_mib_a *)0)->e))

-

-#define MOFFPS(e)	((int)&(((struct fddi_mib_p *)0)->e))

-#define MOFFPA(e)	((int) (((struct fddi_mib_p *)0)->e))

+#define MOFFSS(e)	offsetof(struct fddi_mib, e)

+#define MOFFMS(e)	offsetof(struct fddi_mib_m, e)

+#define MOFFAS(e)	offsetof(struct fddi_mib_a, e)

+#define MOFFPS(e)	offsetof(struct fddi_mib_p, e)
 #define AC_G	0x01		/* Get */

@@ -87,8 +80,8 @@ static const struct s_p_tab {

 	{ SMT_P100D,AC_G,	MOFFSS(fddiSMTOpVersionId),	"S"	} ,

 	{ SMT_P100E,AC_G,	MOFFSS(fddiSMTHiVersionId),	"S"	} ,

 	{ SMT_P100F,AC_G,	MOFFSS(fddiSMTLoVersionId),	"S"	} ,

-	{ SMT_P...
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