linux-kernel - Re: [Rt2400-devel] [PATCH] rt2500usb

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Message-Id: <200710262039.17027.IvDoorn@gmail.com>
Date:	Fri, 26 Oct 2007 20:39:16 +0200
From:	Ivo van Doorn <ivdoorn@...il.com>
To:	rt2400-devel@...ts.sourceforge.net, kernel-stuff@...cast.net
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [Rt2400-devel] [PATCH] rt2500usb - Don't claim 050d:705{0/a}

On Friday 26 October 2007, Parag Warudkar wrote:
> 
> Hi Ivo
> 
> On Thu, 25 Oct 2007, Ivo van Doorn wrote:
> 
> > I awknowledge the problem, but the solution cannot be found in the USB ID's
> > listed in the driver. The bug is the manufacturer who changed chipset while
> > keeping the USB ID the same.
> > There are 2 possible ways around this: hacking the module loader so
> > it continues searching for a different driver when the first driver indicates
> > that it cannot control the device.
> > Or the easiest way, just blacklist rt2500usb if you are sure you need the rt73 driver.
> 
> Thanks for the heads up - I think you have a good idea - there should be 
> an interface between the loader and module to specify conditions like this.
> 
> I will see if I can generate interest in that idea and hack up something 
> along the lines of your suggestion.

Well it could be something quite simple, in the module loader it is looping
through all modules to look for a device with the correct USB/PCI ID.
Currently, after the first occurence it loads the module and doesn't continue,
it should perhaps be relatively easy that it checks if the driver returned -ENODEV
and continues looping to search for another driver.

Ivo
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