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hv_netvsc: pass netvsc_device to rndis halt 

The caller has a valid pointer, pass it to rndis_filter_halt_device
and avoid any possible RCU races here.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2018-03-16 15:44:27 -07:00 committed by David S. Miller
parent a3a41d2f94
commit 0e96460e62
1 changed files with 3 additions and 4 deletions
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7
drivers/net/hyperv/rndis_filter.c
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@ -944,12 +944,11 @@ static bool netvsc_device_idle(const struct netvsc_device *nvdev)
return true; return true;
} }
static void rndis_filter_halt_device(struct rndis_device *dev) static void rndis_filter_halt_device(struct netvsc_device *nvdev,
struct rndis_device *dev)
{ {
struct rndis_request *request; struct rndis_request *request;
struct rndis_halt_request *halt; struct rndis_halt_request *halt;
struct net_device_context *net_device_ctx = netdev_priv(dev->ndev);
struct netvsc_device *nvdev = rtnl_dereference(net_device_ctx->nvdev);
/* Attempt to do a rndis device halt */ /* Attempt to do a rndis device halt */
request = get_rndis_request(dev, RNDIS_MSG_HALT, request = get_rndis_request(dev, RNDIS_MSG_HALT,
@ -1348,7 +1347,7 @@ void rndis_filter_device_remove(struct hv_device *dev,
cancel_work_sync(&net_dev->subchan_work); cancel_work_sync(&net_dev->subchan_work);
/* Halt and release the rndis device */ /* Halt and release the rndis device */
rndis_filter_halt_device(rndis_dev); rndis_filter_halt_device(net_dev, rndis_dev);
net_dev->extension = NULL; net_dev->extension = NULL;