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hv_netvsc: cancel subchannel setup before halting device
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>
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@ -1340,6 +1340,9 @@ void rndis_filter_device_remove(struct hv_device *dev,
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{
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struct rndis_device *rndis_dev = net_dev->extension;
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/* Don't try and setup sub channels if about to halt */
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cancel_work_sync(&net_dev->subchan_work);
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/* Halt and release the rndis device */
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rndis_filter_halt_device(rndis_dev);
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