On 19-10-21, 09:46, Vincent Whitchurch wrote:
>  static void virtio_i2c_msg_done(struct virtqueue *vq)
>  {
> -     struct virtio_i2c *vi = vq->vdev->priv;
> +     struct virtio_i2c_req *req;
> +     unsigned int len;
>  
> -     complete(&vi->completion);
> +     while ((req = virtqueue_get_buf(vq, &len)))
> +             complete(&req->completion);

Instead of adding a completion for each request and using only the
last one, maybe we can do this instead here:

        while ((req = virtqueue_get_buf(vq, &len))) {
                if (req->out_hdr.flags == 
cpu_to_le32(VIRTIO_I2C_FLAGS_FAIL_NEXT))
                        complete(&vi->completion);
        }

Since we already know which is the last one, we can also check at this
point if buffers for all other requests are received or not.

-- 
viresh
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