forcedeth: Use round_jiffies for stats timer

This timer doesn't need to run at precise times, so round it to a whole
second to decrease wakeups.

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/forcedeth.c

@@ -3859,7 +3859,8 @@ static void nv_do_stats_poll(unsigned long data)
 	nv_get_hw_stats(dev);
 
 	if (!np->in_shutdown)
-		mod_timer(&np->stats_poll, jiffies + STATS_INTERVAL);
+		mod_timer(&np->stats_poll,
+			round_jiffies(jiffies + STATS_INTERVAL));
 }
 
 static void nv_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
@@ -5063,7 +5064,8 @@ static int nv_open(struct net_device *dev)
 
 	/* start statistics timer */
 	if (np->driver_data & (DEV_HAS_STATISTICS_V1|DEV_HAS_STATISTICS_V2))
-		mod_timer(&np->stats_poll, jiffies + STATS_INTERVAL);
+		mod_timer(&np->stats_poll,
+			round_jiffies(jiffies + STATS_INTERVAL));
 
 	spin_unlock_irq(&np->lock);