Re: [linux-usb-devel] usb.c: USB device not accepting new address=4 (error=-110)

[Pete Zaitcev <zaitcev@redhat.com>]

I had difficulties making it all work on ServerWorks III LE
based machines, most notably 2450 & 6450.

Dell fixed 2450 eventually, BIOS needs upgrade to level A11.

> >  30:          0          0   IO-APIC-level  usb-ohci

The line above says that MP table contained the device.
This is the situarion with 6450 - they have the MP entry,
but there is no way to make it work. I am working with their
BIOS and hw engineers on a fix.

For the moment the workaround is to run the whole thing
with "noapic". Try it, perhaps it helps the machine in question.

-- Pete

> From: David Brownell <david-b@pacbell.net>
> To: Ingo Oeser <ingo.oeser@informatik.tu-chemnitz.de>
> Cc: linux-usb-devel@lists.sourceforge.net, lkml <linux-kernel@vger.kernel.org>
> Reply-To: linux-usb-devel@lists.sourceforge.net
> Date: Sat, 09 Jun 2001 06:14:24 -0700

> Then whatever sets up your ServerWorks ServerSet III LE chipset
> needs its PCI IRQ setup fixed ... I'm not sure how to do this.
> 
> Perhaps someone who's familiar with arch/i386/kernel/pci-*.c
> irq setup can suggest the right patch for this problem.  I think
> the "dmesg" output in your original post probably had the info
> needed to figure that out.
> 
> - Dave
> 
> > From: "Ingo Oeser" <ingo.oeser@informatik.tu-chemnitz.de>
> > Sent: Saturday, June 09, 2001 12:19 AM
> >
> > > David Brownell wrote:
> > > Can you verify, using /proc/interrupts, that you're actually
> > > getting interrupts on irq #30 when these timeouts happen?
> >  
> > I get none:
> >  30:          0          0   IO-APIC-level  usb-ohci
> >  
> > > One possibility:  the timeout happens because the HCD
> > > is not getting the interrupts it expects.  That would imply
> > > that the PCI IRQ setup for this device isn't quite right.
> > > Such problems have been seen before.
> > 
> > This seems to be my problem. How can I solve this?
> > 
> > My BIOS cannot set a specific IRQ for USB like other BIOSes do.
> > 
> > And now that you say^W it, I remember sth. like this on
> > linux-kernel... I just didn't know the messages...
> > 
> > Thanks and Regards
> > 
> > Ingo Oeser