ixgb: remove lltx support and update tx routine

a) kernel developers suggest LLTX is broken and unsafe to use, remove it.
b) remember to pre-stop the queue if we won't have room
c) removing lltx means we can remove our tx lock

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/net/ixgb/ixgb.h b/drivers/net/ixgb/ixgb.h
index 16f9c756aa46..3cec7b98d52f 100644
--- a/drivers/net/ixgb/ixgb.h
+++ b/drivers/net/ixgb/ixgb.h
@@ -157,7 +157,6 @@ struct ixgb_adapter {
         u32 part_num;
         u16 link_speed;
         u16 link_duplex;
-        spinlock_t tx_lock;
         struct work_struct tx_timeout_task;
 
         struct timer_list blink_timer;