AuxXxilium/linux_dsm_epyc7002
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net: hns: Fix the device being used for dma mapping during TX

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This patch fixes the device being used to DMA map skb->data.
Erroneous device assignment causes the crash when SMMU is enabled.
This happens during TX since buffer gets DMA mapped with device
correspondign to net_device and gets unmapped using the device
related to DSAF.

Signed-off-by: Kejian Yan <yankejian@huawei.com>
Reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kejian Yan 2017-02-09 11:46:15 +00:00 committed by David S. Miller
parent bb1a619735
commit b85ea006b6
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/hisilicon/hns/hns_enet.c
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@ -305,8 +305,8 @@ int hns_nic_net_xmit_hw(struct net_device *ndev,
struct hns_nic_ring_data *ring_data)
{
struct hns_nic_priv *priv = netdev_priv(ndev);
struct device *dev = priv->dev;
struct hnae_ring *ring = ring_data->ring;
struct device *dev = ring_to_dev(ring);
struct netdev_queue *dev_queue;
struct skb_frag_struct *frag;
int buf_num;