natsemi: Use round_jiffies() for slow timers

Unless we have failed to fill the RX ring the timer used by the natsemi
driver is not particularly urgent and can use round_jiffies() to allow
grouping with other timers.
Signed-off-by: NMark Brown <broonie@sirena.org.uk>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

drivers/net/natsemi.c

@@ -1576,7 +1576,7 @@ static int netdev_open(struct net_device *dev)
 
 	/* Set the timer to check for link beat. */
 	init_timer(&np->timer);
-	np->timer.expires = jiffies + NATSEMI_TIMER_FREQ;
+	np->timer.expires = round_jiffies(jiffies + NATSEMI_TIMER_FREQ);
 	np->timer.data = (unsigned long)dev;
 	np->timer.function = &netdev_timer; /* timer handler */
 	add_timer(&np->timer);
@@ -1856,7 +1856,11 @@ static void netdev_timer(unsigned long data)
 			next_tick = 1;
 		}
 	}
-	mod_timer(&np->timer, jiffies + next_tick);
+
+	if (next_tick > 1)
+		mod_timer(&np->timer, round_jiffies(jiffies + next_tick));
+	else
+		mod_timer(&np->timer, jiffies + next_tick);
 }
 
 static void dump_ring(struct net_device *dev)
@@ -3331,7 +3335,7 @@ static int natsemi_resume (struct pci_dev *pdev)
 		spin_unlock_irq(&np->lock);
 		enable_irq(dev->irq);
 
-		mod_timer(&np->timer, jiffies + 1*HZ);
+		mod_timer(&np->timer, round_jiffies(jiffies + 1*HZ));
 	}
 	netif_device_attach(dev);
 out: