Re: [Xen-devel] [PATCH 1/3] xen-netback: fix license ident used in MODULE_LICENSE

From: Ian Campbell
Date: Fri Jan 22 2016 - 09:16:01 EST


On Fri, 2016-01-22 at 13:49 +0000, Wei Liu wrote:
> On Fri, Jan 22, 2016 at 01:14:24PM +0000, David Vrabel wrote:
> > On 22/01/16 12:34, Wei Liu wrote:
> > > The comment at the beginning of the file is the canonical source of
> > > licenses for this module. Currently it contains GPL and MIT license.
> > > Fix
> > > the code to reflect the reality.
> >
> > "The MIT license" isn't really a thing.ÂÂThe closest is the X11
> > license[1], but this not applicable here either since the text in the
> > drivers does not refer to X11 trademarks etc.
> >
>
> That was referring to the license ident string in Linux.ÂÂIf MIT license
> isn't a thing, why would Linux have it at all?

The fact what include/linux/license.h:license_is_gpl_compatible includes
"Dual MIT/GPL" as an option seems to suggest that it is enough of a thing
to be validly used as the contents of a MODULE_LICENSE() thing.

It's also inÂhttps://opensource.org/licenses/MITÂ;, the fact that it might
be confused for other licenses used by MIT notwithstanding.

FWIWÂhttps://en.wikipedia.org/wiki/MIT_LicenseÂseems to think that the
wording most commonly called the "MIT License" might be the "Expat
license", rather than the "X11 License" which is similar but different.

Ian.