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hyperv: NULL dereference on error

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We try to call free_netvsc_device(net_device) when "net_device" is NULL.
It leads to an Oops.

Fixes: f90251c8a6 ('hyperv: Increase the buffer length for netvsc_channel_cb()')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2014-09-04 14:11:23 +03:00 committed by David S. Miller
parent a77f9a282a
commit b1c849276b
1 changed files with 2 additions and 4 deletions
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6
drivers/net/hyperv/netvsc.c
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@ -1054,10 +1054,8 @@ int netvsc_device_add(struct hv_device *device, void *additional_info)
struct net_device *ndev;
net_device = alloc_net_device(device);
if (!net_device) {
ret = -ENOMEM;
goto cleanup;
}
if (!net_device)
return -ENOMEM;
net_device->ring_size = ring_size;