skge: use per-port phy locking

Rather than a workqueue and a per-board mutex to control PHY,
use a tasklet and spinlock. Tasklet is lower overhead and works
just as well for this.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/skge.h b/drivers/net/skge.h
index e9354df..86467ae 100644
--- a/drivers/net/skge.h
+++ b/drivers/net/skge.h
@@ -2424,8 +2424,8 @@
 	u32	     	     ram_size;
 	u32	     	     ram_offset;
 	u16		     phy_addr;
-	struct work_struct   phy_work;
-	struct mutex	     phy_mutex;
+	spinlock_t	     phy_lock;
+	struct tasklet_struct phy_task;
 };
 
 enum pause_control {
@@ -2457,7 +2457,7 @@
 
 	struct net_device_stats net_stats;
 
-	struct delayed_work  link_thread;
+	struct timer_list    link_timer;
 	enum pause_control   flow_control;
 	enum pause_status    flow_status;
 	u8		     rx_csum;