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Date:   Thu, 4 Feb 2021 16:28:56 +0100
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc:     Bartosz Golaszewski <brgl@bgdev.pl>,
        Kent Gibson <warthog618@gmail.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        linux-gpio <linux-gpio@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] gpio: uapi: use the preferred SPDX license identifier
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On Thu, Feb 04, 2021 at 04:17:51PM +0100, Bartosz Golaszewski wrote:
> On Thu, Feb 4, 2021 at 3:35 PM Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
> >
> > On Thu, Feb 04, 2021 at 03:15:50PM +0100, Bartosz Golaszewski wrote:
> > > On Thu, Feb 4, 2021 at 2:47 PM Greg Kroah-Hartman
> > > <gregkh@linuxfoundation.org> wrote:
> > > >
> > > > On Thu, Feb 04, 2021 at 01:43:57PM +0100, Bartosz Golaszewski wrote:
> > > > > From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> > > > >
> > > > > GPL-2.0 license identifier is deprecated, let's use the preferred
> > > > > identifier: GPL-2.0-only.
> > > > >
> > > > > Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> > > > > ---
> > > > > Hi Kent, Greg,
> > > > >
> > > > > I started working on making libgpiod licensing reuse-compliant and noticed
> > > > > that the reuse-tool is telling me that the GPL-2.0 SPDX identifier in the
> > > > > GPIO uapi header is deprecated. Since I'm required to copy the header
> > > > > verbatim into libgpiod's repository, I think we need to fix that at source
> > > > > first.
> > > > >
> > > > >  include/uapi/linux/gpio.h | 2 +-
> > > > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > > >
> > > > > diff --git a/include/uapi/linux/gpio.h b/include/uapi/linux/gpio.h
> > > > > index e4eb0b8c5cf9..3e01ededbf36 100644
> > > > > --- a/include/uapi/linux/gpio.h
> > > > > +++ b/include/uapi/linux/gpio.h
> > > > > @@ -1,4 +1,4 @@
> > > > > -/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
> > > > > +/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
> > > >
> > > > No, there is no need to convert the kernel to the "latest" spdx level,
> > > > when we started out there was no "-only" nonsense (hint no other license
> > > > has that crud), and "GPL-2.0" is a totally valid summary of the license.
> > > >
> > > > So please don't go changing it all in-kernel, that way lies madness.
> > > > Let's finish fixing up ALL kernel files before worrying about what SPDX
> > > > "version" we are at.
> > > >
> > >
> > > But then, the reuse script is telling me:
> > >
> > >     Unfortunately, your project is not compliant with version 3.0 of
> > > the REUSE Specification :-(
> > >
> > > because I'm using a deprecated license. :(
> >
> > Go yell at the REUSE people, there's no requirement to have the most
> > recent version of SPDX, is there?   :)
> >
> > And if that's the only thing wrong with the project when running 'reuse
> > lint' then you should be happy, no one will complain at all.
> >
> > thanks,
> >
> > greg k-h
> 
> Ok, I get it but let me try one last time: there's absolutely no harm
> in merging this patch for the next release, is there? Currently there
> are around 15000 instances of "GPL-2.0-only" in the kernel vs 30000
> "GPL-2.0" - so the former is not that uncommon.

It's up to the owner/maintainer of this file in the end, but I don't
want to see patches doing this for many more files, as it's pointless
churn as far as the kernel is concerned.

thanks,

greg k-h