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Date: Thu, 4 Aug 2011 15:56:03 -0700
From: Greg KH <greg@kroah.com>
To: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com>, linux-usb@vger.kernel.org,
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        Anthony Liguori <aliguori@us.ibm.com>,
        Jes Sorensen <Jes.Sorensen@redhat.com>,
        Alan Stern <stern@rowland.harvard.edu>,
        Oliver Neukum <oliver@neukum.org>, Felipe Balbi <balbi@ti.com>,
        Clemens Ladisch <clemens@ladisch.de>, Jaroslav Kysela <perex@perex.cz>,
        Takashi Iwai <tiwai@suse.de>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Hans de Goede <hdegoede@redhat.com>,
        Theodore Kilgore <kilgota@banach.math.auburn.edu>,
        Adam Baker <linux@baker-net.org.uk>
Subject: Re: USB mini-summit at LinuxCon Vancouver
Message-ID: <20110804225603.GA2557@kroah.com>
References: <20110610002103.GA7169@xanatos>
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On Thu, Aug 04, 2011 at 07:21:47PM -0300, Mauro Carvalho Chehab wrote:
> I know that this problem were somewhat solved for 3G modems, with the usage
> of the userspace problem usb_modeswitch, and with some quirks for the USB
> storage driver, but I'm not sure if such tricks will scale forever, as more
> functions are seen on some USB devices.

Well, no matter how it "scales" it needs to be done in userspace, like
usb_modeswitch does.  We made that decision a while ago, and it is
working out very well.  I see no reason why you can't do it in userspace
as well as that is the easiest place to control this type of thing.

I thought we had a long discussion about this topic a while ago and came
to this very conclusion.  Or am I mistaken?

thanks,

greg k-h