linux-kernel - Re: [Bug 10868] Oops on loading ipaq module since 2.6.26, prevents use of device

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Date:	Mon, 7 Jul 2008 20:16:02 +0200
From:	Matthias Geissert <matthias.geissert@....de>
To:	Oliver Neukum <oliver@...kum.org>
Cc:	Adrian Bunk <bunk@...nel.org>,
	Adam Williamson <awilliamson@...driva.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Arjan van de Ven <arjan@...radead.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Alan Cox <alan@...hat.com>, bugme-daemon@...zilla.kernel.org,
	Greg KH <greg@...ah.com>, linux-usb@...r.kernel.org
Subject: Re: [Bug 10868] Oops on loading ipaq module since 2.6.26, prevents use of device

Am Donnerstag, 3. Juli 2008 16:08:44 schrieb Oliver Neukum:

> >  	.num_interrupt_in =	NUM_DONT_CARE,
> > -	.num_bulk_in =		1,
> > -	.num_bulk_out =		1,
> > -	.num_ports =		1,
> > +	.num_bulk_in =		NUM_DONT_CARE,
> > +	.num_bulk_out =		NUM_DONT_CARE,
>
> This is good.
>
> > +	.num_ports =		2,
>
> This is fatal.

I checked what you said with kernel 2.6.26 rc9.  I set num_ports to 5. It 
worked quite well until I tried to connect to a non-existing endpoint. 

However, the problem is that the Yakumo Delta needs to connect to the 2nd 
endpoint. You can connect to the first one but you don't get any data. 

Is there any good way to tell the ipaq driver to use the 2nd endpoint? Maybe 
one could provide a different struct usb_serial_driver ipaq_device depending 
on the usb id or an option which tells the driver to use 2 endpoints.

Regards,
matthias  
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