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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>
This commit is contained in:
stephen hemminger 2013-05-20 06:54:43 +00:00 committed by David S. Miller
parent 4d12997a9b
commit 98962baad7
1 changed files with 1 additions and 0 deletions
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1
drivers/net/ethernet/realtek/8139cp.c
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@ -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);