8139cp: reset BQL when ring tx ring cleared

This patch cures transmit timeout's with DHCP observed
while running under KVM. When the transmit ring is cleaned out,
the Byte Queue Limit values need to be reset.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/realtek/8139cp.c b/drivers/net/ethernet/realtek/8139cp.c
index 7d1fb9ad1296e5825da2d845129ef38b51728cd7..03523459c4061627d1fad51f751082298eec2147 100644 (file)
--- a/drivers/net/ethernet/realtek/8139cp.c
+++ b/drivers/net/ethernet/realtek/8139cp.c
@@ -1136,6 +1136,7 @@ static void cp_clean_rings (struct cp_private *cp)
                        cp->dev->stats.tx_dropped++;
                }
        }
+       netdev_reset_queue(cp->dev);
 
        memset(cp->rx_ring, 0, sizeof(struct cp_desc) * CP_RX_RING_SIZE);
        memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);