vxge: transmit timeout deadlock

Use a workqueue to handle the device reset during a transmit timeout, as
there can be a deadlock during bringup.  Also, set the netif carrier off
before the watchdog reset is started to prevent the timeout from
reoccurring while still processing the first.

Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Ram Vepa <ram.vepa@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/vxge/vxge-main.h b/drivers/net/vxge/vxge-main.h
index 256d5b4..5746fed 100644
--- a/drivers/net/vxge/vxge-main.h
+++ b/drivers/net/vxge/vxge-main.h
@@ -395,6 +395,7 @@
 	u32 		level_err;
 	u32 		level_trace;
 	char		fw_version[VXGE_HW_FW_STRLEN];
+	struct work_struct reset_task;
 };
 
 struct vxge_rx_priv {