Question about virtio_alloc_virtqueues

Hi folks,

for the past two or so weeks, I've been trying to document the
virtio functions: You can see some of my progress here:

https://codeberg.org/meena/freebsd-src/commits/branch/improve/virtio

I'm currently trying to document virtio_alloc_virtqueues.
The second argument, flags, is only ever called with 0, and
never passed on to anything. So I thought I'd remove it.
However, there *is* this comment in if_vtnet.c:

	/*
	 * TODO: Enable interrupt binding if this is multiqueue. This will
	 * only matter when per-virtqueue MSIX is available.
	 */
	if (sc->vtnet_flags & VTNET_FLAG_MQ)
		flags |= 0;


after which flags are still set to 0. for now??
What does this mean?

Kind regards,

Mina Galić