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Groups > linux.kernel > #1577405
| From | Salil Mehta <salil.mehta@huawei.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH net] net: hns: Fix the device being used for dma mapping during TX |
| Date | 2017-02-09 10:30 +0100 |
| Message-ID | <t8Td8-4n9-3@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
From: Kejian Yan <yankejian@huawei.com>
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>
---
drivers/net/ethernet/hisilicon/hns/hns_enet.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index 672b646..2b52a12 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -305,7 +305,7 @@ 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 device *dev = ring_to_dev(ring_data->ring);
struct hnae_ring *ring = ring_data->ring;
struct netdev_queue *dev_queue;
struct skb_frag_struct *frag;
--
1.7.9.5
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[PATCH net] net: hns: Fix the device being used for dma mapping during TX Salil Mehta <salil.mehta@huawei.com> - 2017-02-09 10:30 +0100
RE: [PATCH net] net: hns: Fix the device being used for dma mapping during TX YUAN Linyu <Linyu.Yuan@alcatel-sbell.com.cn> - 2017-02-09 10:40 +0100
RE: [PATCH net] net: hns: Fix the device being used for dma mapping during TX Salil Mehta <salil.mehta@huawei.com> - 2017-02-09 10:50 +0100
RE: [PATCH net] net: hns: Fix the device being used for dma mapping during TX Salil Mehta <salil.mehta@huawei.com> - 2017-02-09 11:30 +0100
Re: [PATCH net] net: hns: Fix the device being used for dma mapping during TX "Lino Sanfilippo" <LinoSanfilippo@gmx.de> - 2017-02-09 11:30 +0100
RE: [PATCH net] net: hns: Fix the device being used for dma mapping during TX Salil Mehta <salil.mehta@huawei.com> - 2017-02-09 12:40 +0100
Aw: RE: [PATCH net] net: hns: Fix the device being used for dma mapping during TX "Lino Sanfilippo" <LinoSanfilippo@gmx.de> - 2017-02-10 14:20 +0100
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