diff options
Diffstat (limited to 'drivers/net/hyperv/rndis_filter.c')
| -rw-r--r-- | drivers/net/hyperv/rndis_filter.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c index c4e1e0408433..a59cdebc9b4b 100644 --- a/drivers/net/hyperv/rndis_filter.c +++ b/drivers/net/hyperv/rndis_filter.c @@ -1229,6 +1229,9 @@ int rndis_filter_open(struct hv_device *dev) if (!net_device) return -EINVAL; + if (atomic_inc_return(&net_device->open_cnt) != 1) + return 0; + return rndis_filter_open_device(net_device->extension); } @@ -1239,5 +1242,8 @@ int rndis_filter_close(struct hv_device *dev) if (!nvdev) return -EINVAL; + if (atomic_dec_return(&nvdev->open_cnt) != 0) + return 0; + return rndis_filter_close_device(nvdev->extension); } |