[PATCH 2/2] nvme-rdma: check the number of hw queues mapped

[Sagi Grimberg]

This needs documentation in the form of:

/*
  * XXX: blk-mq might not map all our hw contexts but this is a must for
  * us for fabric connects. So until we can fix blk-mq we check that.
  */

> +	hw_queue_mapped = blk_mq_hctx_mapped(ctrl->ctrl.connect_q);
> +	if (hw_queue_mapped < ctrl->ctrl.connect_q->nr_hw_queues) {
> +		dev_err(ctrl->ctrl.device,
> +			"%d hw queues created, but only %d were mapped to sw queues\n",
> +			ctrl->ctrl.connect_q->nr_hw_queues,
> +			hw_queue_mapped);
> +		ret = -EINVAL;
> +		goto out_cleanup_connect_q;
> +	}
> +
>   	ret = nvme_rdma_connect_io_queues(ctrl);
>   	if (ret)
>   		goto out_cleanup_connect_q;
>