linux-kernel - Re: [PATCH v5 2/3] usb: Introduce Xen pvUSB frontend (xen hcd)

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Message-ID: <de25b52e-7db3-3845-38e9-dc8353b23308@suse.com>
Date:   Fri, 1 Oct 2021 17:20:43 +0200
From:   Juergen Gross <jgross@...e.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     xen-devel@...ts.xenproject.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 2/3] usb: Introduce Xen pvUSB frontend (xen hcd)

On 01.10.21 17:13, Greg Kroah-Hartman wrote:
> On Fri, Oct 01, 2021 at 05:00:38PM +0200, Juergen Gross wrote:
>> --- /dev/null
>> +++ b/drivers/usb/host/xen-hcd.c
>> @@ -0,0 +1,1641 @@
>> +/*
>> + * xen-hcd.c
> 
> Need a SPDX line here, instead of the license boiler-plate text you
> have.
> 
> Did you run checkpatch on this thing?  I thought that would have told
> you about this.
> 
>> + *
>> + * Xen USB Virtual Host Controller driver
>> + *
>> + * Copyright (C) 2009, FUJITSU LABORATORIES LTD.
>> + * Author: Noboru Iwamatsu <n_iwamatsu@...fujitsu.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.
>> + *
>> + * 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.
>> + *
>> + * You should have received a copy of the GNU General Public License
>> + * along with this program; if not, see <http://www.gnu.org/licenses/>.
>> + *
>> + * Or, by your choice:
>> + *
>> + * When distributed separately from the Linux kernel or incorporated into
>> + * other software packages, subject to the following license:
>> + *
>> + * Permission is hereby granted, free of charge, to any person obtaining a copy
>> + * of this software and associated documentation files (the "Software"), to
>> + * deal in the Software without restriction, including without limitation the
>> + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
>> + * sell copies of the Software, and to permit persons to whom the Software is
>> + * furnished to do so, subject to the following conditions:
>> + *
>> + * The above copyright notice and this permission notice shall be included in
>> + * all copies or substantial portions of the Software.
>> + *
>> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
>> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
>> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
>> + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
>> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
>> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
>> + * DEALINGS IN THE SOFTWARE.
> 
> Dual licensing a USB host controller driver is, um, a very dubious
> thing given that you can only interact with symbols exported with
> EXPORT_SYMBOL_GPL() from the USB stack.
> 
> So you might want to change this...

Ah, right. I thought I wouldn't be able to do so, as the original driver
was including above license text, but reading it again I think I can
just make it GPL-V2.


Juergen

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