[NET]: Convert init_timer into setup_timer

Many-many code in the kernel initialized the timer->function
and  timer->data together with calling init_timer(timer). There
is already a helper for this. Use it for networking code.

The patch is HUGE, but makes the code 130 lines shorter
(98 insertions(+), 228 deletions(-)).

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 0e10ff2..23aa355 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -1752,8 +1752,7 @@
 	dn_dst_ops.kmem_cachep =
 		kmem_cache_create("dn_dst_cache", sizeof(struct dn_route), 0,
 				  SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
-	init_timer(&dn_route_timer);
-	dn_route_timer.function = dn_dst_check_expire;
+	setup_timer(&dn_route_timer, dn_dst_check_expire, 0);
 	dn_route_timer.expires = jiffies + decnet_dst_gc_interval * HZ;
 	add_timer(&dn_route_timer);