Hello,

On Tue, 13 Nov 2018 12:13:09 -0200, Fabio Estevam wrote:

quoted

Actually, LICENSES/preferred/GPL-2.0 has GPL-2.0-or-later
as a valid license:

Valid-License-Identifier: GPL-2.0-or-later

Personally I very much prefer GPL-2.0-or-later since I think it is
much clearer.  

I saw feedback from Greg to use the SPDX style from
Documentation/process/license-rules.rst.

Please check:
https://lkml.org/lkml/2018/11/10/232

According to https://spdx.org/licenses/, i.e the reference SPDX site,
GPL-2.0-or-later is the right thing to use, and GPL-2.0+ is
"deprecated". But apparently Greg's feedback is "let's not used the
SDPX style, as we don't want to change this all over".

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com