linux-kernel - Re: [PATCH] rt2x00: Get rid of duplicate usb id from rt2500usb

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Date:	Thu, 03 Sep 2009 11:11:39 -0400
From:	Pavel Roskin <proski@....org>
To:	Ivo Van Doorn <ivdoorn@...il.com>
Cc:	"John W. Linville" <linville@...driver.com>,
	Amit Kucheria <amit.kucheria@...onical.com>,
	List Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-wireless@...r.kernel.org
Subject: Re: [PATCH] rt2x00: Get rid of duplicate usb id from rt2500usb

On Thu, 2009-09-03 at 16:18 +0200, Ivo Van Doorn wrote:
> On Thu, Sep 3, 2009 at 1:55 PM, John W. Linville<linville@...driver.com> wrote:
> > On Thu, Sep 03, 2009 at 02:42:20PM +0300, Amit Kucheria wrote:
> >> USB_DEVICE(0x148f, 0x2573) is served by the rt73usb driver where it is already
> >> defined. Remove it from rt2500usb.
> >>
> >> Signed-off-by: Amit Kucheria <amit.kucheria@...onical.com>
> >> Cc: Ivo van Doorn <IvDoorn@...il.com>
> >
> > IIRC there are IDs that are used by different devices where rt73usb
> > covers one device and the rt2500usb covers another.  Are you sure
> > this is not one of those?
> 
> Yes, I believe this particular ID was already discussed some time ago
> on this list. This is one of the infamous duplicate IDs. (Fortunately not
> one of those infamous Linksys devices with 5 different chipsets for the
> same ID).

The famous Linksys devices can be distinguished by the textual PCMCIA
ID.  In this case, there is no reliable way to distinguish the devices
without trying the drivers.  I tried and could not find any difference
between "lsusb -v" output for the devices said to be supported by
rt2500usb and rt73usb.

-- 
Regards,
Pavel Roskin
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