netdev - Re: [PATCH net] net: cdc_ncm: workaround for missing CDC Union

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Date:	Fri, 18 Jan 2013 20:11:25 +0100
From:	Oliver Neukum <oliver@...kum.org>
To:	Bjørn Mork <bjorn@...k.no>
Cc:	netdev@...r.kernel.org, linux-usb@...r.kernel.org,
	Greg Suarez <gsuarez@...thmicro.com>,
	Alexey Orishko <alexey.orishko@...ricsson.com>
Subject: Re: [PATCH net] net: cdc_ncm: workaround for missing CDC Union

On Friday 18 January 2013 15:25:47 Bjørn Mork wrote:
> Adding support for the MBIM mode in some Sierra Wireless devices.
> 
> Some Sierra Wireless firmwares support CDC MBIM but have no CDC
> Union funtional descriptor. This violates the MBIM specification,
> but we can easily work around the bug by looking at the Interface
> Association Descriptor instead.  This is most likely what
> Windows uses too, which explains how the firmware bug has gone
> unnoticed until now.

Should we do this for everything CDC?

	Regards
		Oliver

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