From: Greg KH <gre...@linuxfoundation.org> 3.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: stephen hemminger <shemmin...@vyatta.com> [ Upstream commit 5ff0feac88ced864f44adb145142269196fa79d9 ] 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 <k...@mns.spb.ru> Signed-off-by: Stephen Hemminger <shemmin...@vyatta.com> Signed-off-by: David S. Miller <da...@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/net/ethernet/marvell/sky2.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) --- 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_ 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) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/