[PATCH] sky2: rework of NAPI and IRQ management

Redo the interupt handling of sky2 driver based on the IRQ mangement
documentation. All interrupts are handled by the device0 NAPI poll
routine.

Don't need to adjust interrupt mask in IRQ context, done only when
changing device under RTNL. Therefore don't need hwlock anymore.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/sky2.h

@@ -278,13 +278,9 @@ enum {
 	Y2_IS_CHK_TXS1	= 1<<1,		/* Descriptor error TXS 1 */
 	Y2_IS_CHK_TXA1	= 1<<0,		/* Descriptor error TXA 1 */
 
-	Y2_IS_BASE	= Y2_IS_HW_ERR | Y2_IS_STAT_BMU |
-			  Y2_IS_POLL_CHK | Y2_IS_TWSI_RDY |
-			  Y2_IS_IRQ_SW | Y2_IS_TIMINT,
-	Y2_IS_PORT_1	= Y2_IS_IRQ_PHY1 | Y2_IS_IRQ_MAC1 |
-			  Y2_IS_CHK_RX1 | Y2_IS_CHK_TXA1 | Y2_IS_CHK_TXS1,
-	Y2_IS_PORT_2	= Y2_IS_IRQ_PHY2 | Y2_IS_IRQ_MAC2 |
-			  Y2_IS_CHK_RX2 | Y2_IS_CHK_TXA2 | Y2_IS_CHK_TXS2,
+	Y2_IS_BASE	= Y2_IS_HW_ERR | Y2_IS_STAT_BMU,
+	Y2_IS_PORT_1	= Y2_IS_IRQ_PHY1 | Y2_IS_IRQ_MAC1,
+	Y2_IS_PORT_2	= Y2_IS_IRQ_PHY2 | Y2_IS_IRQ_MAC2,
 };
 
 /*	B2_IRQM_HWE_MSK	32 bit	IRQ Moderation HW Error Mask */
@@ -1832,6 +1828,7 @@ struct sky2_port {
 	struct net_device    *netdev;
 	unsigned	     port;
 	u32		     msg_enable;
+	spinlock_t	     phy_lock;
 
 	spinlock_t	     tx_lock  ____cacheline_aligned_in_smp;
 	struct tx_ring_info  *tx_ring;
@@ -1866,16 +1863,12 @@ struct sky2_port {
 
 	struct net_device_stats net_stats;
 
-	struct work_struct   phy_task;
-	struct semaphore     phy_sema;
 };
 
 struct sky2_hw {
 	void __iomem  	     *regs;
 	struct pci_dev	     *pdev;
 	struct net_device    *dev[2];
-	spinlock_t	     hw_lock;
-	u32		     intr_mask;
 
 	int		     pm_cap;
 	u8	     	     chip_id;