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hv_netvsc: Use Windows version instead of NVSP version on GPAD teardown

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commit 2afc5d61a7197de25a61f54ea4ecfb4cb62b1d42A upstram

When changing network interface settings, Windows guests
older than WS2016 can no longer shutdown. This was addressed
by commit 0ef58b0a05 ("hv_netvsc: change GPAD teardown order
on older versions"), however the issue also occurs on WS2012
guests that share NVSP protocol versions with WS2016 guests.
Hence we use Windows version directly to differentiate them.

Fixes: 0ef58b0a05 ("hv_netvsc: change GPAD teardown order on older versions")
Signed-off-by: Mohammed Gamal <mgamal@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mohammed Gamal
2018-05-14 15:32:19 -07:00
committed by Greg Kroah-Hartman
parent be9c798d0d
commit d8c3e04d39
1 changed files with 2 additions and 2 deletions
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4
drivers/net/hyperv/netvsc.c
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@@ -569,13 +569,13 @@ void netvsc_device_remove(struct hv_device *device)
netdev_dbg(ndev, "net device safe to remove\n");
/* older versions require that buffer be revoked before close */
if (net_device->nvsp_version < NVSP_PROTOCOL_VERSION_4)
if (vmbus_proto_version < VERSION_WIN10)
netvsc_teardown_gpadl(device, net_device);
/* Now, we can close the channel safely */
vmbus_close(device->channel);
if (net_device->nvsp_version >= NVSP_PROTOCOL_VERSION_4)
if (vmbus_proto_version >= VERSION_WIN10)
netvsc_teardown_gpadl(device, net_device);
/* Release all resources */