[PATCH] MACB: Use struct delayed_work instead of struct work_struct

The macb driver calls schedule_delayed_work() and friends, so we need
to use a struct delayed_work along with it. The conversion was
explained by David Howells on lkml Dec 5 2006:

http://lkml.org/lkml/2006/12/5/269Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/macb.c

@@ -267,9 +267,9 @@ static void macb_update_stats(struct macb *bp)
 		*p += readl(reg);
 }
 
-static void macb_periodic_task(void *arg)
+static void macb_periodic_task(struct work_struct *work)
 {
-	struct macb *bp = arg;
+	struct macb *bp = container_of(work, struct macb, periodic_task.work);
 
 	macb_update_stats(bp);
 	macb_check_media(bp, 1, 0);
@@ -1088,7 +1088,7 @@ static int __devinit macb_probe(struct platform_device *pdev)
 
 	dev->base_addr = regs->start;
 
-	INIT_WORK(&bp->periodic_task, macb_periodic_task, bp);
+	INIT_DELAYED_WORK(&bp->periodic_task, macb_periodic_task);
 	mutex_init(&bp->mdio_mutex);
 	init_completion(&bp->mdio_complete);
 

drivers/net/macb.h

@@ -377,7 +377,7 @@ struct macb {
 
 	unsigned int		rx_pending, tx_pending;
 
-	struct work_struct	periodic_task;
+	struct delayed_work	periodic_task;
 
 	struct mutex		mdio_mutex;
 	struct completion	mdio_complete;