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net/9p: fix error path of p9_virtio_probe

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Currently when virtio_find_single_vq fails, we go through del_vqs which
throws a warning (Trying to free already-free IRQ).  Skip del_vqs if vq
allocation failed.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Jean-Philippe Brucker <[email protected]>
Reviewed-by: Greg Kurz <[email protected]>
Cc: Eric Van Hensbergen <[email protected]>
Cc: Ron Minnich <[email protected]>
Cc: Latchesar Ionkov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Dominique Martinet <[email protected]>
This commit is contained in:
Jean-Philippe Brucker 2018-07-17 19:14:45 -07:00 • committed by Dominique Martinet
commit 92aef4675d
1 changed files with 2 additions and 1 deletions
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3
net/9p/trans_virtio.c
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@ -563,7 +563,7 @@ static int p9_virtio_probe(struct virtio_device *vdev)
chan->vq = virtio_find_single_vq(vdev, req_done, "requests");
if (IS_ERR(chan->vq)) {
err = PTR_ERR(chan->vq);
goto out_free_vq;
goto out_free_chan;
}
chan->vq->vdev->priv = chan;
spin_lock_init(&chan->lock);
@ -616,6 +616,7 @@ out_free_tag:
kfree(tag);
out_free_vq:
vdev->config->del_vqs(vdev);
out_free_chan:
kfree(chan);
fail:
return err;