linux-kernel - Re: [PATCH v3 02/15] soundwire: Add SoundWire bus type

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Date:   Thu, 30 Nov 2017 18:01:03 +0530
From:   Vinod Koul <vinod.koul@...el.com>
To:     Philippe Ombredanne <pombredanne@...b.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        ALSA <alsa-devel@...a-project.org>, Mark <broonie@...nel.org>,
        Takashi <tiwai@...e.de>,
        Pierre <pierre-louis.bossart@...ux.intel.com>,
        patches.audio@...el.com, alan@...ux.intel.com,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        Sagar Dharia <sdharia@...eaurora.org>,
        Srini Kandagatla <srinivas.kandagatla@...aro.org>,
        plai@...eaurora.org, Sudheer Papothi <spapothi@...eaurora.org>
Subject: Re: [PATCH v3 02/15] soundwire: Add SoundWire bus type

On Thu, Nov 30, 2017 at 12:42:30PM +0100, Philippe Ombredanne wrote:
> On Thu, Nov 30, 2017 at 10:56 AM, Vinod Koul <vinod.koul@...el.com> wrote:
> []
> > diff --git a/drivers/soundwire/bus.h b/drivers/soundwire/bus.h
> > new file mode 100644
> > index 000000000000..2af05b21961e
> > --- /dev/null
> > +++ b/drivers/soundwire/bus.h
> > @@ -0,0 +1,57 @@
> > +/*
> > + *  This file is provided under a dual BSD/GPLv2 license.  When using or
> > + *  redistributing this file, you may do so under either license.
> > + *
> > + *  SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
> > + *
> > + *  GPL LICENSE SUMMARY
> > + *
> > + *  Copyright(c) 2015-17 Intel Corporation.
> > + *
> > + *  This program is free software; you can redistribute it and/or modify
> > + *  it under the terms of version 2 of the GNU General Public License as
> > + *  published by the Free Software Foundation.
> > + *
> > + *  This program is distributed in the hope that it will be useful, but
> > + *  WITHOUT ANY WARRANTY; without even the implied warranty of
> > + *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> > + *  General Public License for more details.
> > + *
> > + *  BSD LICENSE
> > + *
> > + *  Copyright(c) 2015-17 Intel Corporation.
> > + *
> > + *  Redistribution and use in source and binary forms, with or without
> > + *  modification, are permitted provided that the following conditions
> > + *  are met:
> > + *
> > + *    * Redistributions of source code must retain the above copyright
> > + *      notice, this list of conditions and the following disclaimer.
> > + *    * Redistributions in binary form must reproduce the above copyright
> > + *      notice, this list of conditions and the following disclaimer in
> > + *      the documentation and/or other materials provided with the
> > + *      distribution.
> > + *    * Neither the name of Intel Corporation nor the names of its
> > + *      contributors may be used to endorse or promote products derived
> > + *      from this software without specific prior written permission.
> > + *
> > + *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
> > + *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
> > + *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
> > + *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
> > + *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
> > + *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
> > + *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
> > + *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
> > + *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
> > + *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
> > + *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> > + *
> > + */
> 
> Hi Vinod,
> 
> You may want to use the proper SPDX ids convention here instead? e.g.
> below is all you need IMHO: not 50 lines of boilerplate but only two.
> 
> You will make everyone happier with a sigh of relief when you remove
> this boilerplate, and you will also have saved a few trees if this
> ever printed on paper, making earth a better planet as a bonus ;)
> 
> > +// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
> > +// Copyright (c) 2015-17 Intel Corporation.

I hadn't seen this one, thanks for pointing. A quick google pointed me to
relevant post.

> Neater and simpler, is it not? In any case the SPDX line should go at the top.
> See Linus and tglx doc posts for comment and doc styles for this.
> NB: some includes used in assembly sometimes require to use /**/
> comments instead.

IANAL and recommendation at Intel is to keep the text with the tags.

Thanks
-- 
~Vinod