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Commit 455c4401 authored by Peng Li's avatar Peng Li Committed by David S. Miller
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net: hns: add netif_carrier_off before change speed and duplex 



If there are packets in hardware when changing the speed
or duplex, it may cause hardware hang up.

This patch adds netif_carrier_off before change speed and
duplex in ethtool_ops.set_link_ksettings, and adds
netif_carrier_on after complete the change.

Signed-off-by: default avatarPeng Li <lipeng321@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 31fabbee

drivers/net/ethernet/hisilicon/hns/hns_ethtool.c

+2 −0
Original line number Diff line number Diff line
@@ -243,7 +243,9 @@ static int hns_nic_set_link_ksettings(struct net_device *net_dev, 
	}



	if (h->dev->ops->adjust_link) {

		netif_carrier_off(net_dev);

		h->dev->ops->adjust_link(h, (int)speed, cmd->base.duplex);

		netif_carrier_on(net_dev);

		return 0;

	}