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From: Gerd Hoffmann <kraxel@redhat.com>
Date: Tue, 19 Jan 2016 08:13:04 +0100
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Subject: Re: [Qemu-devel] usb-storage assertions
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To: Andrey Korolyov <andrey@xdel.ru>
Cc: Kevin Wolf <kwolf@redhat.com>, hdegoede@redhat.com, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>

On Di, 2016-01-19 at 02:49 +0300, Andrey Korolyov wrote:
> On Mon, Jan 18, 2016 at 4:55 PM, Gerd Hoffmann <kraxel@redhat.com> wrote:
> >   Hi,
> >
> >> > ok.  Had no trouble with freebsd, will go fetch netbsd images.  What
> >> > arch is this?  i386?  x86_64?
> >>
> >> i386 7.0 for the reference, but I`m sure that this wouldn`t matter in
> >> any way.
> >
> > 7.0 trace:
>=20
> Whoops, sorry, should be 5.1/i386.

I'll check that too ...

>  On a 7.0 I observe same endless
> loop as you do.

... just wanted to start with that one.

[ trace snipped ]

> > So, to shutdown ehci netbsd clears the cmd register, then sets the rese=
t
> > bit in the cmd register.  Fine.
> >
> > Then it goes read the status register, in a loop, forever.  No idea why=
,
> > and I also can't spot then place in the source code.  Hmm ...

/me was hoping anyone has an idea what is going on here.
Are you familiar with the netbsd kernel sources?

cheers,
  Gerd