Commit 719b85c3 authored by Haiyang Zhang's avatar Haiyang Zhang Committed by David S. Miller

hv_netvsc: Fix error handling in netvsc_attach()

If rndis_filter_open() fails, we need to remove the rndis device created
in earlier steps, before returning an error code. Otherwise, the retry of
netvsc_attach() from its callers will fail and hang.

Fixes: 7b2ee50c ("hv_netvsc: common detach logic")
Signed-off-by: default avatarHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c4509a5a
...@@ -982,7 +982,7 @@ static int netvsc_attach(struct net_device *ndev, ...@@ -982,7 +982,7 @@ static int netvsc_attach(struct net_device *ndev,
if (netif_running(ndev)) { if (netif_running(ndev)) {
ret = rndis_filter_open(nvdev); ret = rndis_filter_open(nvdev);
if (ret) if (ret)
return ret; goto err;
rdev = nvdev->extension; rdev = nvdev->extension;
if (!rdev->link_state) if (!rdev->link_state)
...@@ -990,6 +990,13 @@ static int netvsc_attach(struct net_device *ndev, ...@@ -990,6 +990,13 @@ static int netvsc_attach(struct net_device *ndev,
} }
return 0; return 0;
err:
netif_device_detach(ndev);
rndis_filter_device_remove(hdev, nvdev);
return ret;
} }
static int netvsc_set_channels(struct net_device *net, static int netvsc_set_channels(struct net_device *net,
......
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