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Message-Id: <20171212124431.635053035@linuxfoundation.org> Date: Tue, 12 Dec 2017 13:43:40 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, weiping zhang <zhangweiping@...ichuxing.com>, Cornelia Huck <cohuck@...hat.com>, "Michael S. Tsirkin" <mst@...hat.com> Subject: [PATCH 4.9 010/148] virtio: release virtio index when fail to device_register 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: weiping zhang <zwp10758@...il.com> commit e60ea67bb60459b95a50a156296041a13e0e380e upstream. index can be reused by other virtio device. Signed-off-by: weiping zhang <zhangweiping@...ichuxing.com> Reviewed-by: Cornelia Huck <cohuck@...hat.com> Signed-off-by: Michael S. Tsirkin <mst@...hat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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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