linux-kernel - Re: [PATCH] move eject code from zd1211rw to usb-storage

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Message-ID: <20091215150137.46bd9817@strolchi.home.s3e.de>
Date:	Tue, 15 Dec 2009 15:01:37 +0100
From:	Stefan Seyfried <stefan.seyfried@...glemail.com>
To:	Josua Dietze <digidietze@...isberghof.de>
Cc:	linux-usb@...r.kernel.org, linux-wireless@...r.kernel.org,
	linux-kernel@...r.kernel.org, usb-storage@...ts.one-eyed-alien.net,
	Stefan Seyfried <seife@...airon.com>
Subject: Re: [PATCH] move eject code from zd1211rw to usb-storage

Hi,

On Tue, 15 Dec 2009 13:31:13 +0100
Josua Dietze <digidietze@...isberghof.de> wrote:

> Stefan Seyfried schrieb:
> 
> > The USB ID claimed by zd1211rw for the fake storage device is
> > also in use by other, non-zd1211rw devices (Sphairon Homelink
> > 1202). Move the eject of these devices to where it belongs and
> > where all the needed infrastructure already exists: usb-storage.
> 
> We can do the eject (as other mode switches) in userspace. Previous 
> discussions pointed into that direction.

Well, the zd1211rw already did that, I wanted to fix that up and was
told to do it in usb-storage instead (which, looking at the diffstat,
seems like a good idea).

> And there is always the question of being able to access the "fake 
> CD-ROM" without hacking the kernel.

I was thinking that I would be able to achieve that by echoing an
appropriate quirk into /sys/module/usb-storage/parameters/quirks,
however, I could not get it to *not* eject the device.
But given that there is already an "option_zero_cd" parameter in
usb-storage, it should be easy to massage this into a general "do not
eject virtual installer media" flag so that people are still able to
get the windows driver files off their devices should they need to do
so.

> I'd like to see these devices removed from unusual_devs.h.

I'd like them to work with one driver, not two (one in kernel and one
in userspace).

That's a fundamental difference in opinions, and I fear I'm not the one
who is going to decice how this will be handled ;)

Have fun,

	Stefan
-- 
Stefan Seyfried

"Any ideas, John?"
"Well, surrounding them's out."
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