Re: [PATCH v2 2/3] usb/hcd-xhci: Move qemu-xhci device to hcd-xhci-pci.c

[Thomas Huth]

 Hi,

On 22/07/2020 09.49, Sai Pavan Boddu wrote:
[...]
>>>>>> + * This library is free software; you can redistribute it and/or
>>>>>> + * modify it under the terms of the GNU Lesser General Public
>>>>>> + * License as published by the Free Software Foundation; either
>>>>>> + * version 2 of the License, or (at your option) any later version.
>>
>> And while you're at it: There was never a "version 2" of the Lesser GPL.
>> In version 2.0, it was still called "Library" GPL. So it is quite likely 
>> that version
>> 2.1 is meant here instead.
> [Sai Pavan Boddu] I have less knowledge here. But indeed I don’t find LGPL 
> 2.0 https://www.gnu.org/licenses/licenses.html#LicenseURLs

You can find version 2.0 here, for example:

 https://www.gnu.org/licenses/old-licenses/old-licenses.html#LGPL

... but as I said, v2.0 is called "Library" GPL instead of "Lesser" GPL.

> BTW, I still see our repository use combination of GPL and LGPL. Is there any 
> general rule to follow at high level.

As long as the license is a standard license that is compatible with the
GPLv2 or any later version, you should be fine. See the LICENSE file in
the top directory of the sources for details.

As a general rule, I'd say either use "GPLv2 or later" (see the file
COPYING in the main directory) or "LGPLv2.1 or later" (see COPYING.LIB
in the main directory) for new code, unless you contribute to the tcg/
folder where MIT or BSD is preferred instead.

 Thomas