net: hns: Fix the device being used for dma mapping during TX
authorKejian Yan <yankejian@huawei.com>
Wed, 24 May 2017 01:53:41 +0000 (21:53 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 17 Jun 2017 04:39:35 +0000 (06:39 +0200)
commit716cca0a67ec131295dbca477b0cc35e0bc5f81c
treec149070a45b99081b587990f3bf35128bf3e9468
parentaacf9de1e23910a04611f90f26ad66dc7a179343
net: hns: Fix the device being used for dma mapping during TX

[ Upstream commit b85ea006b6bebb692628f11882af41c3e12e1e09 ]

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>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/ethernet/hisilicon/hns/hns_enet.c