[PATCH net-next] r8169: fix sporadic transmit timeout issue

[Heiner Kallweit]

Holger reported sporadic transmit timeouts and it turned out that one
path misses ringing the doorbell. Fix was suggested by Eric.

Fixes: ef14358546b1 ("r8169: make use of xmit_more")
Suggested-by: Eric Dumazet <eduma...@google.com>
Tested-by: Holger Hoffstätte <hol...@applied-asynchrony.com>
Signed-off-by: Heiner Kallweit <hkallwe...@gmail.com>
---
 drivers/net/ethernet/realtek/r8169_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/realtek/r8169_main.c 
b/drivers/net/ethernet/realtek/r8169_main.c
index 641a34942..448047a32 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -5681,6 +5681,7 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb,
                 */
                smp_wmb();
                netif_stop_queue(dev);
+               door_bell = true;
        }
 
        if (door_bell)
-- 
2.22.0