--- /home/tburns/kernel-git/linux-2.6/drivers/net/sky2.h	2007-04-18 15:55:08.000000000 -0400
+++ ./sky2-patched.h	2007-04-19 14:57:40.000000000 -0400
@@ -1880,6 +1880,8 @@
 	u32		     msg_enable;
 	spinlock_t	     phy_lock;
 
+	spinlock_t           tx_lock  ____cacheline_aligned_in_smp;
+
 	struct tx_ring_info  *tx_ring;
 	struct sky2_tx_le    *tx_le;
 	u16		     tx_cons;		/* next le to check */