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    Subject[PATCH] virtio_ring: add an error code check in virtqueue_resize
    Date
    virtqueue_resize_packed() or virtqueue_resize_split() can return
    error code if failed, so add a check for this.

    Signed-off-by: Su Hui <suhui@nfschina.com>
    ---

    I'm not sure that return directly is right or not,
    maybe there are some process should do before return.

    drivers/virtio/virtio_ring.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
    index 51d8f3299c10..cf662c3a755b 100644
    --- a/drivers/virtio/virtio_ring.c
    +++ b/drivers/virtio/virtio_ring.c
    @@ -2759,6 +2759,9 @@ int virtqueue_resize(struct virtqueue *_vq, u32 num,
    else
    err = virtqueue_resize_split(_vq, num);

    + if (err)
    + return err;
    +
    return virtqueue_enable_after_reset(_vq);
    }
    EXPORT_SYMBOL_GPL(virtqueue_resize);
    --
    2.30.2
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