netdev - Re: [PATCH v2 08/10] drivers: watchdog: Replace GPL license notice with SPDX identifier

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Date: Sun, 14 May 2023 00:07:28 +0900
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Richard Fontana <rfontana@...hat.com>
Cc: Bagas Sanjaya <bagasdotme@...il.com>,
	Linux SPDX Licenses <linux-spdx@...r.kernel.org>,
	Linux DRI Development <dri-devel@...ts.freedesktop.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Networking <netdev@...r.kernel.org>,
	Linux ARM <linux-arm-kernel@...ts.infradead.org>,
	Linux Staging Drivers <linux-staging@...ts.linux.dev>,
	Linux Watchdog Devices <linux-watchdog@...r.kernel.org>,
	Linux Kernel Actions <linux-actions@...ts.infradead.org>,
	Diederik de Haas <didi.debian@...ow.org>,
	Kate Stewart <kstewart@...uxfoundation.org>,
	Philippe Ombredanne <pombredanne@...b.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	David Airlie <airlied@...hat.com>,
	Karsten Keil <isdn@...ux-pingi.de>,
	Jay Vosburgh <j.vosburgh@...il.com>,
	Andy Gospodarek <andy@...yhouse.net>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Sam Creasey <sammy@...my.net>,
	Dominik Brodowski <linux@...inikbrodowski.net>,
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	Haojian Zhuang <haojian.zhuang@...il.com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Wim Van Sebroeck <wim@...ux-watchdog.org>,
	Guenter Roeck <linux@...ck-us.net>, Jan Kara <jack@...e.com>,
	Andreas Färber <afaerber@...e.de>,
	Manivannan Sadhasivam <mani@...nel.org>,
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	Marc Zyngier <maz@...nel.org>,
	Jonas Jensen <jonas.jensen@...il.com>,
	Sylver Bruneau <sylver.bruneau@...glemail.com>,
	Andrew Sharp <andy.sharp@....com>,
	Denis Turischev <denis@...pulab.co.il>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Alan Cox <alan@...ux.intel.com>,
	Simon Horman <simon.horman@...igine.com>
Subject: Re: [PATCH v2 08/10] drivers: watchdog: Replace GPL license notice
 with SPDX identifier

On Sat, May 13, 2023 at 09:43:39AM -0400, Richard Fontana wrote:
> On Sat, May 13, 2023 at 6:53 AM Bagas Sanjaya <bagasdotme@...il.com> wrote:
> >
> > On 5/12/23 19:46, Richard Fontana wrote:
> > > On Fri, May 12, 2023 at 6:07 AM Bagas Sanjaya <bagasdotme@...il.com> wrote:
> > >
> > >
> > >> diff --git a/drivers/watchdog/sb_wdog.c b/drivers/watchdog/sb_wdog.c
> > >> index 504be461f992a9..822bf8905bf3ce 100644
> > >> --- a/drivers/watchdog/sb_wdog.c
> > >> +++ b/drivers/watchdog/sb_wdog.c
> > >> @@ -1,3 +1,4 @@
> > >> +// SPDX-License-Identifier: GPL-1.0+
> > >>  /*
> > >>   * Watchdog driver for SiByte SB1 SoCs
> > >>   *
> > >> @@ -38,10 +39,6 @@
> > >>   *     (c) Copyright 1996 Alan Cox <alan@...rguk.ukuu.org.uk>,
> > >>   *                                             All Rights Reserved.
> > >>   *
> > >> - *     This program is free software; you can redistribute it and/or
> > >> - *     modify it under the terms of the GNU General Public License
> > >> - *     version 1 or 2 as published by the Free Software Foundation.
> > >
> > > Shouldn't this be
> > > // SPDX-License-Identifier: GPL-1.0 OR GPL-2.0
> > > (or in current SPDX notation GPL-1.0-only OR GPL-2.0-only) ?
> > >
> >
> > Nope, as it will fail spdxcheck.py. Also, SPDX specification [1]
> > doesn't have negation operator (NOT), thus the licensing requirement
> > on the above notice can't be expressed reliably in SPDX here.
> >
> > [1]: https://spdx.github.io/spdx-spec/v2.3/SPDX-license-expressions/
> 
> The GPL identifiers in recent versions of SPDX include an `-only` and
> an `-or-later` variant.

But Linux does not use the newer versions of SPDX given that we started
the conversion before the "-only" variant came out.  Let's stick with
the original one please before worrying about converting to a newer
version of SPDX and mixing things up.

thanks,

greg k-h