[Nut-upsuser] tracing a problem with newhidups

[Arnaud Quette]

Hi Rodrigo,

2006/7/13, Rodrigo Ventura <yoda at isr.ist.utl.pt>:
>
> On Friday 07 July 2006 20:42, Arnaud Quette wrote:
> > > Assuming that MxPS means max packet size, it seems to be 8, which is
> > > lower than 20, and therefore it looks like the EINVAL error comes from
> > > there. Am I going in the right direction this time?
> >
> > your guess seems right.
> > The best to validate your guess is to modify the 20 to 8 in
> get_interrupt()
> > and to recompile nut.
> >
> > Let me know the result, and I'll fix that for 2.0.4-pre2 next week.
>
> I did the following patch:
>
> --- libhid.c.orig       Sat Jul  8 00:31:34 2006
> +++ libhid.c    Sat Jul  8 00:34:38 2006
> @@ -645,7 +645,7 @@
>         upsdebugx(2, "Waiting for notifications...");
>
>         /* needs libusb-0.1.8 to work => use ifdef and autoconf */
> -       if ((size = libusb_get_interrupt(udev, &buf[0], 20, 5000)) > -1)
> +       if ((size = libusb_get_interrupt(udev, &buf[0], 8, 5000)) > -1)
>         {
>                 dump_hex ("Notification", buf, size);
>
>
> but I can't interpret the result: instead of -22 error, I got
> usbdevfs: usb_submit_urb returned -6


strange: -6 is ENXIO ("No such device or address")
that should definitly be a kernel bug.
if you have some time to submit it to their bug tracker, they might be
interested in...

so I gave up and switched to a brand new gentoo server with kernel 2.6. All
> seems to be working fine now. No dmesg stuff. Therefore, it definitely
> looks
> like a kernel 2.4 problem (and/or uhci driver).
>
> Anyway, in case you need further testing with the 2.4, please let me know
> what
> you need me to do.
>

I don't have much to do apart from what has already been done.

Arnaud
-- 
Linux / Unix Expert - MGE UPS SYSTEMS - R&D Dpt
Network UPS Tools (NUT) Project Leader - http://www.networkupstools.org/
Debian Developer - http://people.debian.org/~aquette/
OpenSource Developer - http://arnaud.quette.free.fr/
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