linux-kernel - Re: Challenges with doing hardware bring up with Linux first

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Message-ID: <AANLkTi=bs3ev9A2RQdKujVsDrpQJCCRZ+e2BzYeFNmD_@mail.gmail.com>
Date:	Tue, 30 Nov 2010 12:09:18 -0800
From:	"Luis R. Rodriguez" <lrodriguez@...eros.com>
To:	Pavel Machek <pavel@....cz>
Cc:	bkuhn@....org, Alan Cox <alan@...rguk.ukuu.org.uk>,
	linux-kernel@...r.kernel.org,
	linux-wireless <linux-wireless@...r.kernel.org>,
	Greg KH <greg@...ah.com>, David Miller <davem@...emloft.net>,
	"John W. Linville" <linville@...driver.com>,
	Stephen Hemminger <shemminger@...tta.com>,
	"Perez-Gonzalez, Inaky" <inaky.perez-gonzalez@...el.com>,
	Charles Marker <Charles.Marker@...eros.com>,
	Jouni Malinen <Jouni.Malinen@...eros.com>,
	Kevin Hayes <kevin@...eros.com>,
	Zhifeng Cai <zhifeng.cai@...eros.com>,
	Don Breslin <Don.Breslin@...eros.com>,
	Doug Dahlby <Doug.Dahlby@...eros.com>,
	Julia Lawall <julia@...u.dk>
Subject: Re: Challenges with doing hardware bring up with Linux first

On Tue, Nov 30, 2010 at 12:00 PM, Pavel Machek <pavel@....cz> wrote:
> On Tue 2010-11-30 11:30:18, Luis R. Rodriguez wrote:
>> On Tue, Nov 30, 2010 at 11:26 AM, Pavel Machek <pavel@....cz> wrote:
>> > Hi!
>> >
>> >> >> everything else can be independent code. For ath9k in particular this
>> >> >> means we keep ath9k_hw shared between our Operating Systems and that's
>> >> >> it. In addition to this I believe opening up the common drivers for
>> >> >
>> >> > The Linux copy needs to be GPL,
>> >>
>> >> GPL-Compatible you mean, right. I mean we have ath9k_hw with
>> >> permissive licensed files.
>> >
>> > GPL-compatible is not right word. It has to be either GPL, or so
>> > permissive that anyone is allowed to turn it into GPL.
>>
>> Oh?
>
> Kernel is GPL. Dual BSD/GPL is ok. Just BSD... I don't think so.
>
> /*
>  * Copyright (c) 2008 Atheros Communications Inc.
>  *
>  * Permission to use, copy, modify, and/or distribute this software
> for any
>  * purpose with or without fee is hereby granted, provided that the
> above
>  * copyright notice and this permission notice appear in all copies.
>  *
>
> ...but I need permission to relicense it under GPL, and I'm not sure I
> have it.

Got it, OK let me clarify that for you then. Yes. That is what makes
it GPL-Compatible. We droped the Dual GPL/BSD practice and picked up
the ISC license to help OpenBSD when we took Reyk's HAL from OpenBSD.
The ISC license is just a simpler BSD license due the Berne Convention
which makes one of the clauses implicit (respecting copyright between
countries). Its just a very simple permissive license.

 Luis
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