virtio: console: ensure add_inbuf can work for multiple ports as well

	return NULL;

}

/*

 * Create a scatter-gather list representing our input buffer and put

 * it in the queue.

 *

 * Callers should take appropriate locks.

 */

static void add_inbuf(struct virtqueue *vq, struct port_buffer *buf)

{

	struct scatterlist sg[1];

	sg_init_one(sg, buf->buf, buf->size);

	if (vq->vq_ops->add_buf(vq, sg, 0, 1, buf) < 0)

		BUG();

	vq->vq_ops->kick(vq);

}

/*

 * The put_chars() callback is pretty straightforward.

 *

	return count;

}

/*

 * Create a scatter-gather list representing our input buffer and put

 * it in the queue.

 */

static void add_inbuf(struct port *port)

{

	struct scatterlist sg[1];

	sg_init_one(sg, port->inbuf->buf, PAGE_SIZE);

	/* Should always be able to add one buffer to an empty queue. */

	if (port->in_vq->vq_ops->add_buf(port->in_vq, sg, 0, 1, port) < 0)

		BUG();

	port->in_vq->vq_ops->kick(port->in_vq);

}

/*

 * get_chars() is the callback from the hvc_console infrastructure

 * when an interrupt is received.

	/* Finished?  Re-register buffer so Host will use it again. */

	if (port->inbuf->offset == port->inbuf->len)

		add_inbuf(port);

		add_inbuf(port->in_vq, port->inbuf);

	return count;

}

	}

	/* Register the input buffer the first time. */

	add_inbuf(port);

	add_inbuf(port->in_vq, port->inbuf);

	/* Start using the new console output. */

	early_put_chars = NULL;