linux-kernel - Re: [PATCH V2] leds: trigger: Introduce an USB port trigger

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Date:	Wed, 20 Jul 2016 10:08:08 +0200
From:	Pavel Machek <pavel@....cz>
To:	Rafał Miłecki <zajec5@...il.com>
Cc:	Peter Chen <hzpeterchen@...il.com>,
	Richard Purdie <rpurdie@...ys.net>,
	Jacek Anaszewski <j.anaszewski@...sung.com>,
	Felipe Balbi <balbi@...nel.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Jonathan Corbet <corbet@....net>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
	<devicetree@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>,
	"open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
	"open list:LED SUBSYSTEM" <linux-leds@...r.kernel.org>
Subject: Re: [PATCH V2] leds: trigger: Introduce an USB port trigger

On Mon 2016-07-18 08:55:52, Rafał Miłecki wrote:
> On 18 July 2016 at 07:53, Peter Chen <hzpeterchen@...il.com> wrote:
> > On Mon, Jul 18, 2016 at 07:57:34AM +0200, Rafał Miłecki wrote:
> >> On 18 July 2016 at 07:40, Peter Chen <hzpeterchen@...il.com> wrote:
> >> > On Mon, Jul 18, 2016 at 06:44:49AM +0200, Rafał Miłecki wrote:
> >> >> On 18 July 2016 at 04:31, Peter Chen <hzpeterchen@...il.com> wrote:
> >> >> > On Fri, Jul 15, 2016 at 11:10:45PM +0200, Rafał Miłecki wrote:
> >> >> >> +
> >> >> >> +usbport trigger:
> >> >> >> +- usb-ports : List of USB ports that usbport should observed for turning on a
> >> >> >> +           given LED.
> >> >> >> +
> >> >> >
> >> >> > %s/should/should be
> >> >>
> >> >> Thanks.
> >> >>
> >> >>
> >> >> >> diff --git a/drivers/leds/trigger/ledtrig-usbport.c b/drivers/leds/trigger/ledtrig-usbport.c
> >> >> >> new file mode 100644
> >> >> >> index 0000000..97b064c
> >> >> >> --- /dev/null
> >> >> >> +++ b/drivers/leds/trigger/ledtrig-usbport.c
> >> >> >> @@ -0,0 +1,206 @@
> >> >> >> +/*
> >> >> >> + * USB port LED trigger
> >> >> >> + *
> >> >> >> + * Copyright (C) 2016 Rafał Miłecki <rafal.milecki@...il.com>
> >> >> >> + *
> >> >> >> + * 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.
> >> >> >> + */
> >> >> >
> >
> > In your COPYRIGHT, it says "or any later version". But afaik, It should
> > not be on GPL v3.
> 
> If one picks my code, modifies it, relicenses it using GPL v3, we
> can't include it anymore. It's the same story as with BSD systems and
> their BSD licenses. If one picks e.g. BSD 3-clause licensed code,
> makes it GPL, releases it (e.g. by putting in Linux), BSD can't use it
> anymore.
> 
> Still, this license is GPL v2 compatible and as is it can be included
> in the Linux.

Anything GPLv2 compatible is fair game for the kernel. GPLv2+ is very
common for the kernel.

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html