From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net,stable] cdc_ncm: toggle altsetting to force reset
 before setup
Date: Mon, 07 Mar 2016 14:38:11 -0500 (EST)
Message-ID: <20160307.143811.474380372887861694.davem@davemloft.net>
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Cc: oliver@neukum.org, netdev@vger.kernel.org,
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To: bjorn@mork.no
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=46rom: Bj=F8rn Mork <bjorn@mork.no>
Date: Thu,  3 Mar 2016 22:20:53 +0100

> Some devices will silently fail setup unless they are reset first.
> This is necessary even if the data interface is already in
> altsetting 0, which it will be when the device is probed for the
> first time.  Briefly toggling the altsetting forces a function
> reset regardless of the initial state.
>=20
> This fixes a setup problem observed on a number of Huawei devices,
> appearing to operate in NTB-32 mode even if we explicitly set them
> to NTB-16 mode.
>=20
> Signed-off-by: Bj=F8rn Mork <bjorn@mork.no>

Applied and queued up for -stable, thanks.