diff options
| author | stephen hemminger <shemminger@vyatta.com> | 2012-06-06 10:01:30 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-06-07 13:06:42 -0700 |
| commit | 5ff0feac88ced864f44adb145142269196fa79d9 (patch) | |
| tree | 444637fa1f505f02888cf89d93ef2226fb5f9f07 | |
| parent | 8bd74516b1bd9308c17f67583134d93f777203ca (diff) | |
| download | linux-5ff0feac88ced864f44adb145142269196fa79d9.tar.gz linux-5ff0feac88ced864f44adb145142269196fa79d9.tar.bz2 linux-5ff0feac88ced864f44adb145142269196fa79d9.zip | |
sky2: fix checksum bit management on some chips
The newer flavors of Yukon II use a different method for receive
checksum offload. This is indicated in the driver by the SKY2_HW_NEW_LE
flag. On these newer chips, the BMU_ENA_RX_CHKSUM should not be set.
The driver would get incorrectly toggle the bit, enabling the old
checksum logic on these chips and cause a BUG_ON() assertion. If
receive checksum was toggled via ethtool.
Reported-by: Kirill Smelkov <kirr@mns.spb.ru>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/marvell/sky2.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c index cace36f2ab92..28a54451a3e5 100644 --- a/drivers/net/ethernet/marvell/sky2.c +++ b/drivers/net/ethernet/marvell/sky2.c @@ -4381,10 +4381,12 @@ static int sky2_set_features(struct net_device *dev, netdev_features_t features) struct sky2_port *sky2 = netdev_priv(dev); netdev_features_t changed = dev->features ^ features; - if (changed & NETIF_F_RXCSUM) { - bool on = features & NETIF_F_RXCSUM; - sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR), - on ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM); + if ((changed & NETIF_F_RXCSUM) && + !(sky2->hw->flags & SKY2_HW_NEW_LE)) { + sky2_write32(sky2->hw, + Q_ADDR(rxqaddr[sky2->port], Q_CSR), + (features & NETIF_F_RXCSUM) + ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM); } if (changed & NETIF_F_RXHASH) |