[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/irda/af_irda.c b/net/irda/af_irda.c
index 07dfa7f..240b0cb 100644
--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c
@@ -2410,9 +2410,8 @@
 
 			/* Set watchdog timer to expire in <val> ms. */
 			self->errno = 0;
-			init_timer(&self->watchdog);
-			self->watchdog.function = irda_discovery_timeout;
-			self->watchdog.data = (unsigned long) self;
+			setup_timer(&self->watchdog, irda_discovery_timeout,
+					(unsigned long)self);
 			self->watchdog.expires = jiffies + (val * HZ/1000);
 			add_timer(&(self->watchdog));