e1000: Only set IDE for tx when we are using TIDV/TADV

Spec fix: don't set IDE unless we are actually setting the tx
int delay time.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 705e654c368a..fe22ae8f0a3d 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -1580,8 +1580,11 @@ e1000_configure_tx(struct e1000_adapter *adapter)
         e1000_config_collision_dist(hw);
 
         /* Setup Transmit Descriptor Settings for eop descriptor */
-        adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP |
-                E1000_TXD_CMD_IFCS;
+        adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
+
+        /* only set IDE if we are delaying interrupts using the timers */
+        if (adapter->tx_int_delay)
+                adapter->txd_cmd |= E1000_TXD_CMD_IDE;
 
         if (hw->mac_type < e1000_82543)
                 adapter->txd_cmd |= E1000_TXD_CMD_RPS;