virtio: release virtio index when fail to device_register
commit e60ea67bb6
upstream.
index can be reused by other virtio device.
Signed-off-by: weiping zhang <zhangweiping@didichuxing.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
parent
1f5d203906
commit
c5a5c47c40
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@ -333,6 +333,8 @@ int register_virtio_device(struct virtio_device *dev)
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/* device_register() causes the bus infrastructure to look for a
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/* device_register() causes the bus infrastructure to look for a
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* matching driver. */
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* matching driver. */
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err = device_register(&dev->dev);
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err = device_register(&dev->dev);
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if (err)
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ida_simple_remove(&virtio_index_ida, dev->index);
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out:
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out:
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if (err)
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if (err)
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virtio_add_status(dev, VIRTIO_CONFIG_S_FAILED);
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virtio_add_status(dev, VIRTIO_CONFIG_S_FAILED);
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