linux-kernel - Re: Add the infamous Huawei E220 to option.c

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Date:	Thu, 29 Nov 2007 09:04:28 +0100
From:	Oliver Neukum <oliver@...kum.org>
To:	Pete Zaitcev <zaitcev@...hat.com>
Cc:	linux-usb@...r.kernel.org, preining@...ic.at,
	kristoffer.ericson@...il.com, drussell@...hat.com,
	johann.wilhelm@...dent.tugraz.at, linux-kernel@...r.kernel.org
Subject: Re: Add the infamous Huawei E220 to option.c

Am Donnerstag, 29. November 2007 08:52:37 schrieb Pete Zaitcev:
> On Thu, 29 Nov 2007 08:38:59 +0100, Oliver Neukum <oliver@...kum.org> wrote:
> > Am Donnerstag, 29. November 2007 01:13:05 schrieb Pete Zaitcev:
> > > The problem stems from the fact that both option and usb-storage can
> > > bind to the modem when in storage mode: the former binds because of the
> > > storage class, the latter binds because of VID/PID match. The modprobe
> > > loads both,
> >
> > Isn't it possible to fix this in option's module table?
>
> At first thought it'll need adding a field to struct usb_serial to save
> the driver_info from the ID table in usb_serial_probe. It's something I'd

Why? It is passed to the subdrivers in their probe().
Maybe it should simply be passed in attach(), too?

> like to discuss actually. I hate fields which store information this
> way: filled in one place, used in another place... From the perspective
> of code prettiness I would rather add another method for usb_serial_probe
> to call. But I'm not sure really.

Does the device remain a storage class device after the crucial control 
message?

	Regards
		Oliver

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