linux-kernel - Re: usb_fill_bulk_urb() broken for USB1.1?

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Date:	Tue, 26 Jun 2007 12:30:57 -0700
From:	Pete Zaitcev <zaitcev@...hat.com>
To:	Chuck Ebbert <cebbert@...hat.com>
Cc:	Keith Chew <keith.chew@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	USB development list <linux-usb-devel@...ts.sourceforge.net>
Subject: Re: usb_fill_bulk_urb() broken for USB1.1?

On Tue, 26 Jun 2007 13:52:41 -0400, Chuck Ebbert <cebbert@...hat.com> wrote:
> On 06/26/2007 10:20 AM, Keith Chew wrote:

> [cc: linux-usb-devel]
> 
> > We have been using a Zydas based WIFI drivers under kernel 2.6.16.18
> > with great success. Recently, when we upgraded to 2.6.20.1 (also
> > tested on 2.6.21.5), we found that during initialisation, these calls
> > works with USB2.0 but stopped working on USB1.1:
> > 
> > usb_fill_bulk_urb();
> > usb_submit_urb();
> > 
> > The error code returned is -22 (-EINVAL). In 2.6.16.18, it works for
> > both USB2.0 and 1.1.

This looks like an attempt to submit a bulk URB to an interrupt endpoint,
with garbage interval or something of that nature.

I think it would be the best to talk to the driver author directly.

-- Pete
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