fifo = vring->fifo;
/* Return if vdev is not ready. */
- if (!fifo->vdev[devid])
+ if (!fifo || !fifo->vdev[devid])
return;
/* Return if another vring is running. */
vq->num_max = vring->num;
+ vq->priv = vring;
+
+ /* Make vq update visible before using it. */
+ virtio_mb(false);
+
vqs[i] = vq;
vring->vq = vq;
- vq->priv = vring;
}
return 0;
mod_timer(&fifo->timer, jiffies + MLXBF_TMFIFO_TIMER_INTERVAL);
+ /* Make all updates visible before setting the 'is_ready' flag. */
+ virtio_mb(false);
+
fifo->is_ready = true;
return 0;