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From: Hans Petter Selasky <hselasky@c2i.net>
To: John Hay <jhay@meraka.org.za>
Date: Mon, 19 Oct 2009 21:35:08 +0200
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Cc: freebsd-usb@freebsd.org
Subject: Re: [8.0] hplip3/ugen printer problem
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On Monday 19 October 2009 20:58:52 John Hay wrote:
> On Mon, Oct 19, 2009 at 02:19:49AM +0200, Hans Petter Selasky wrote:
> > On Sunday 18 October 2009 20:40:31 John Hay wrote:
> > > > > io/hpmud/musb.c 1028: bulk_write failed buf=0xbfbfc93c size=8192
> > > > > len=-60:
> >
> > Error -60 means that the transfer timed out.
> >
> > Maybe the timeout given by the driver is too strict.
> >
> > Try increasing the timeout, or change the usb_bulk_write() code into
> > temporarily  using no timeout, timeout=0.
>

Hi,

> With a timeout of 0 it is working properly.

Great!

The USB stack as a clamp on the timeout:

        xfer->timeout = fs_ep.timeout;
        if (xfer->timeout > 65535) {
                xfer->timeout = 65535;
        }

The unit is milliseconds.

> What unit is timeout? The comments in the code seems to think it is
> in milliseconds and they set it to 72 hours (72*3600*1000) because
> they actually have a timeout thread to handle timeouts. Both the
> above value and that times 1000 seem to timeout in about 4-5 seconds.
>
> The file I have been editing:
> work/hplip-3.9.8/io/hpmud/musb.c

Can you report this problem to the authors of hplip-3.9.8 ?

It seems FreeBSD behaviour is different that Linux behaviour!

--HPS