From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <stable-owner@vger.kernel.org>
Received: from mga05.intel.com ([192.55.52.43]:64230 "EHLO mga05.intel.com"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1753661AbdDJOOT (ORCPT <rfc822;stable@vger.kernel.org>);
        Mon, 10 Apr 2017 10:14:19 -0400
From: Felipe Balbi <felipe.balbi@linux.intel.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org, nsekhar@ti.com, rogerq@ti.com,
        januszx.dziedzic@intel.com
Subject: Re: [PATCH] usb: dwc3: gadget: delay unmap of bounced requests
In-Reply-To: <20170410140440.GB31894@kroah.com>
References: <20170410134841.2592-1-felipe.balbi@linux.intel.com> <20170410140440.GB31894@kroah.com>
Date: Mon, 10 Apr 2017 17:13:55 +0300
Message-ID: <87a87oe4f0.fsf@linux.intel.com>
MIME-Version: 1.0
Content-Type: multipart/signed; boundary="=-=-=";
        micalg=pgp-sha256; protocol="application/pgp-signature"
Sender: stable-owner@vger.kernel.org
List-ID: <stable.vger.kernel.org>

--=-=-=
Content-Type: text/plain
Content-Transfer-Encoding: quoted-printable

Greg Kroah-Hartman <gregkh@linuxfoundation.org> writes:

> On Mon, Apr 10, 2017 at 04:48:41PM +0300, Felipe Balbi wrote:
>> From: Janusz Dziedzic <januszx.dziedzic@intel.com>
>>=20
>> commit d62145929992f331fdde924d5963ab49588ccc7d upstream.
>>=20
>> In the case of bounced ep0 requests, we must delay DMA operation until
>> after ->complete() otherwise we might overwrite contents of req->buf.
>>=20
>> This caused problems with RNDIS gadget.
>>=20
>> Cc: <stable@vger.kernel.org>
>> Fixes: d62145929992 ("usb: dwc3: gadget: always unmap EP0 requests")
>> Signed-off-by: Janusz Dziedzic <januszx.dziedzic@intel.com>
>> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
>> ---
>>=20
>> Note that this commit needs to be backported to all kernels where
>> d62145929992 was backported.
>
> How can you backport this patch to everywhere it was backported to
> already?  :)
>
> I think one of the git commit ids is wrong here...

hah! nice catch. I'll fix and resend

=2D-=20
balbi

--=-=-=
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
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=I1Ny
-----END PGP SIGNATURE-----
--=-=-=--