Bug#655387: [PATCH] usb: cdc_ether: Ignore bogus union descriptor for RNDIS devices

[Markus Kolb <linux-201011@tower-net.de>]

On Wed, 11 Jan 2012 11:35:16 +0100, Oliver Neukum wrote:
> Am Mittwoch, 11. Januar 2012, 11:29:57 schrieb Markus Kolb:
> > Is it really a broken union descriptor?
> > There is all information but the original cdc_ether code can only
> > handle union descriptor which starts with 0.
> > That is something e.g. the Windows driver can handle.
>
> Possibly cdc-ether is also broken, but the descriptor refers to 
> interfaces
> 4 and 5 which don't exist.
>
> 	Regards
> 		Oliver

Ok. You're right, I've reminded.
Is there another way to get the correct interface numbers or is the
defensive guess of my patch ok?