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