Prevent outgoing traffic when netvsc dev is destroyed.

Signed-off-by: K. Y. Srinivasan <[email protected]>
Signed-off-by: Haiyang Zhang <[email protected]>
---
 drivers/staging/hv/netvsc.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/hv/netvsc.c b/drivers/staging/hv/netvsc.c
index 8eb4039..67065c1 100644
--- a/drivers/staging/hv/netvsc.c
+++ b/drivers/staging/hv/netvsc.c
@@ -56,7 +56,8 @@ static struct netvsc_device *get_outbound_net_device(struct 
hv_device *device)
        struct netvsc_device *net_device;
 
        net_device = device->ext;
-       if (net_device && atomic_read(&net_device->refcnt) > 1)
+       if (net_device && (atomic_read(&net_device->refcnt) > 1) &&
+               !net_device->destroy)
                atomic_inc(&net_device->refcnt);
        else
                net_device = NULL;
-- 
1.7.4.1

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