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hv_netvsc: cancel subchannel setup before halting device

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[ Commit a7483ec0267c69b34e818738da60b392623da94b upstream. ]

Block setup of multiple channels earlier in the teardown
process. This avoids possible races between halt and subchannel
initialization.

Suggested-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stephen Hemminger 2018-05-14 15:32:12 -07:00 committed by Greg Kroah-Hartman
parent 0ed8945b3a
commit 99e06589bd
1 changed files with 3 additions and 0 deletions
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3
drivers/net/hyperv/rndis_filter.c
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@ -1340,6 +1340,9 @@ void rndis_filter_device_remove(struct hv_device *dev,
{
struct rndis_device *rndis_dev = net_dev->extension;
/* Don't try and setup sub channels if about to halt */
cancel_work_sync(&net_dev->subchan_work);
/* Halt and release the rndis device */
rndis_filter_halt_device(rndis_dev);