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SubjectRe: [PATCH] media: v4l2-core: v4l2-mc: Add SPDX license identifier
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Hi Shuah,

On Thursday, 11 January 2018 17:45:15 EET Shuah Khan wrote:
> On 01/11/2018 05:55 AM, Laurent Pinchart wrote:
> > On Wednesday, 10 January 2018 18:35:36 EET Shuah Khan wrote:
> >> Replace GPL license statement with SPDX GPL-2.0 license identifier.
> >>
> >> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
> >> ---
> >>
> >> drivers/media/v4l2-core/v4l2-mc.c | 11 +----------
> >> 1 file changed, 1 insertion(+), 10 deletions(-)
> >>
> >> diff --git a/drivers/media/v4l2-core/v4l2-mc.c
> >> b/drivers/media/v4l2-core/v4l2-mc.c index 303980b71aae..1297132acd4e
> >> 100644
> >> --- a/drivers/media/v4l2-core/v4l2-mc.c
> >> +++ b/drivers/media/v4l2-core/v4l2-mc.c
> >> @@ -1,3 +1,4 @@
> >> +/* SPDX-License-Identifier: GPL-2.0 */
> >
> > The header doesn't match the existing license.
>
> When I added the file, I must have cut and pasted the license statement
> from another file. More on this below the deleted license lines.
>
> > Furthermore, unless I'm mistaken, the standard comment style for SPDX
> > headers in the kernel is //, not /* ... */
>
> Looks like we have 3 conventions for SPDX comment style.
> /* ... */ for headers and # ... for shell scripts and
> // for .c files.
>
> I can update it it and send v2 provided we think the change is inline
> with the original license.

Personally I prefer the /* ... */ comment style, but I noticed that Greg used
// in his large patch the adds SPDX license headers, so I think we should
follow the established practice. I'll let you investigate to find what is
preferred :)

> >> /*
> >>
> >> * Media Controller ancillary functions
> >> *
> >>
> >> @@ -5,16 +6,6 @@
> >>
> >> * Copyright (C) 2016 Shuah Khan <shuahkh@osg.samsung.com>
> >> * Copyright (C) 2006-2010 Nokia Corporation
> >> * Copyright (c) 2016 Intel Corporation.
> >>
> >> - *
> >> - * This program is free software; you can redistribute it and/or modify
> >> - * it under the terms of the GNU General Public License as published by
> >> - * the Free Software Foundation; either version 2 of the License, or
> >> - * (at your option) any later version.
>
> Are you concerned about the "or (at your option) any later version." part
> that it doesn't match?

Yes, that's my concern. I'm personally fine with GPL-2.0-only, but you'll have
a hard time contacting all the other copyright holders if you want to
relicense this. Good luck getting hold of the appropriate legal department at
Nokia :-)

On a related note, I nowadays encourage developers to keep their copyright on
code they wrote when possible, and to at least negotiate that with their
employers.

> >> - *
> >> - * 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.
> >> */
> >>
> >> #include <linux/module.h>

--
Regards,

Laurent Pinchart

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