| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 010/148] virtio: release virtio index when fail to device_register | Date | Tue, 12 Dec 2017 13:43:40 +0100 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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From: weiping zhang <zwp10758@gmail.com>
commit e60ea67bb60459b95a50a156296041a13e0e380e 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>
--- drivers/virtio/virtio.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -323,6 +323,8 @@ int register_virtio_device(struct virtio /* device_register() causes the bus infrastructure to look for a * matching driver. */ err = device_register(&dev->dev); + if (err) + ida_simple_remove(&virtio_index_ida, dev->index); out: if (err) add_status(dev, VIRTIO_CONFIG_S_FAILED);
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