Date: Tue, 26 Jun 2001 18:45:02 +0100 (BST) From: Nick Hibma <n_hibma@qubesoft.com> To: Brian Behlendorf <brian@collab.net> Cc: "Karsten W. Rohrbach" <karsten@rohrbach.de>, <mobile@FreeBSD.ORG> Subject: Re: C1-XS sound and USB issues (was Re: Vaio PCG-XG9 Problem) Message-ID: <20010626184348.S44767-100000@bluebottle> In-Reply-To: <Pine.BSF.4.31.0106192259550.604-100000@localhost>
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The problem has to do with the way the driver reads registers (basically
sleeping in interrupt context).
There is no real solution for it, apart from using a kthread to handle
the handling of finished USB transfers in the ethernet drivers.
Nick
On Tue, 19 Jun 2001, Brian Behlendorf wrote:
> On Tue, 19 Jun 2001, Karsten W. Rohrbach wrote:
> > Brian Behlendorf(brian@collab.net)@2001.06.13 14:17:19 +0000:
> > [...]
> > > /kernel: aue0: usb error on rx: IOERROR
> > > last message repeated 9 times
> > > /kernel: aue0: at uhub0 port 1 (addr 2) disconnected
> > > /kernel: acphy0: detached
> > > /kernel: miibus0: detached
> > > /kernel: aue0: usb error on rx: IOERROR
> > > /kernel: aue0: detached
> > >
> > > No problem so far. So I reattach, it works; I use it for an hour, I
> > > detach, *poof*. No kernel core dump, keyboard/mouse response, no messages
> > > anywhere, a hard reboot needed. This isn't an IRQ issue, is it? Any
> > > ideas on how to debug further?
> >
> > try
> > ifconfig aue0 down
> > and look what happens when you remove and reconnect again
>
> Sure enough, doing "ifconfig aue0 down" before detaching the USB ethernet
> dongle keeps it from crashing the system, and detaching without will crash
> the system the second time (or later). Is this a race condition of some
> sort, so I always have to remember to do the ifconfig aue0 down, or a bug
> that could get fixed?
>
> Brian
>
>
>
>
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