e1000e: always set transmit descriptor control registers the same

The hardware erratum workaround where the TXDCTL register must be the same
setting for both queues should always be done.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index ffe4583..6081dee 100644 (file)
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -2817,9 +2817,9 @@ static void e1000_configure_tx(struct e1000_adapter *adapter)
                 */
                txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE;
                ew32(TXDCTL(0), txdctl);
-               /* erratum work around: set txdctl the same for both queues */
-               ew32(TXDCTL(1), txdctl);
        }
+       /* erratum work around: set txdctl the same for both queues */
+       ew32(TXDCTL(1), er32(TXDCTL(0)));
 
        /* Program the Transmit Control Register */
        tctl = er32(TCTL);