boot hang: "ata1: resetting devices .. done" (5.1-CURRENT, IBMT30)

[Lee Damon]

> > > > Backing out the most recent checkin to sys/dev/ata/ata-queue.c (i.e.
> > > > reverting to version 1.6) makes the problem go away.
> > > I upgraded from an Oct 1 -> Oct 12 kernel and saw the same hang.
> > > Backing out r1.6 fixed it for me too.
> Anyone tried going forward to 1.8?

I just tried 1.8, it did not fix the problem.  Symtoms are still the same,

> > ad0: 35174MB <IC25N040ATCS05-0> [71465/16/63] at ata0-master UDMA100
> > ata1: resetting devices ..
> > done

Going back to 1.6 (apparently) does fix the problem.

nomad
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