linux-kernel - Re: [PATCH v6 1/3] usb: Add Xen pvUSB protocol description

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Date:   Fri, 15 Oct 2021 15:53:00 +0200
From:   Juergen Gross <jgross@...e.com>
To:     Greg KH <greg@...ah.com>
Cc:     linux-usb@...r.kernel.org, xen-devel@...ts.xenproject.org,
        linux-kernel@...r.kernel.org,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>
Subject: Re: [PATCH v6 1/3] usb: Add Xen pvUSB protocol description

On 15.10.21 10:52, Juergen Gross wrote:
> On 15.10.21 10:14, Greg KH wrote:
>> On Fri, Oct 15, 2021 at 10:07:35AM +0200, Juergen Gross wrote:
>>> On 13.10.21 14:01, Greg KH wrote:
>>>> On Wed, Oct 13, 2021 at 09:52:05AM +0200, Juergen Gross wrote:
>>>>> Add the definition of pvUSB protocol used between the pvUSB 
>>>>> frontend in
>>>>> a Xen domU and the pvUSB backend in a Xen driver domain (usually 
>>>>> Dom0).
>>>>>
>>>>> This header was originally provided by Fujitsu for Xen based on Linux
>>>>> 2.6.18.
>>>>>
>>>>> Changes are:
>>>>> - adapt to Linux kernel style guide
>>>>> - use Xen namespace
>>>>> - add lots of comments
>>>>> - don't use kernel internal defines
>>>>>
>>>>> Signed-off-by: Juergen Gross <jgross@...e.com>
>>>>> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>
>>>>> ---
>>>>>    include/xen/interface/io/usbif.h | 421 
>>>>> +++++++++++++++++++++++++++++++
>>>>>    1 file changed, 421 insertions(+)
>>>>>    create mode 100644 include/xen/interface/io/usbif.h
>>>>>
>>>>> diff --git a/include/xen/interface/io/usbif.h 
>>>>> b/include/xen/interface/io/usbif.h
>>>>> new file mode 100644
>>>>> index 000000000000..9494b1c9be99
>>>>> --- /dev/null
>>>>> +++ b/include/xen/interface/io/usbif.h
>>>>> @@ -0,0 +1,421 @@
>>>>> +/*
>>>>> + * usbif.h
>>>>> + *
>>>>> + * USB I/O interface for Xen guest OSes.
>>>>> + *
>>>>> + * Copyright (C) 2009, FUJITSU LABORATORIES LTD.
>>>>> + * Author: Noboru Iwamatsu <n_iwamatsu@...fujitsu.com>
>>>>> + *
>>>>> + * 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.
>>>>> + */
>>>>
>>>> Please use a SPDX line and not license "boilerplate" text like this :(
>>>
>>> Okay. Is this your only concern for this series? Or is it a blocking
>>> point for you before looking into it in more detail?
>>
>> It was an easy thing to see at first glance that you hadn't taken my
>> previous comment about this seriously :(
> 
> I'm sorry for that. This was clearly an oversight from me.
> 
> BTW, when checking which SPDX tag to use I discovered that most of the
> Xen header files under include/xen/interface have been tagged as GPL-2.0
> by a patch from you.
> 
> Said patch (commit b24413180f5600) stated that there was no license
> information found in those files, but they all clearly had a verbatim
> copy of the MIT license in them.

They didn't. No idea where I was seeing that, sorry for that wrong
statement. Nevertheless the GPL-2.0 tag is wrong for those files.

Clearly need more coffee. :-(

> I'll send another patch fixing those SPDX tags.


Juergen

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