[PATCH 2.{4,5}.x] mod_timer fix for sch_csz.c

[Vinay K Nallamothu <vinay-rc@xxxxxxxxxxxxxx>]

--- linux-2.5.68/net/sched/sch_csz.c    2003-04-21 10:14:44.000000000 +0530
+++ linux-2.5.68-nvk/net/sched/sch_csz.c        2003-05-03 14:40:11.000000000 
+0530
@@ -708,11 +708,9 @@
         */
        if (q->wd_expires) {
                unsigned long delay = PSCHED_US2JIFFIE(q->wd_expires);
-               del_timer(&q->wd_timer);
                if (delay == 0)
                        delay = 1;
-               q->wd_timer.expires = jiffies + delay;
-               add_timer(&q->wd_timer);
+               mod_timer(&q->wd_timer, jiffies + delay);
                sch->stats.overlimits++;
        }
 #endif