linux-kernel - Re: [PATCH v2] USB: add SPDX identifiers to all remaining files in drivers/usb/

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Date:   Sun, 5 Nov 2017 14:51:35 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Philippe Ombredanne <pombredanne@...b.com>
Cc:     Johan Hovold <johan@...nel.org>, linux-usb@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Kate Stewart <kstewart@...uxfoundation.org>
Subject: Re: [PATCH v2] USB: add SPDX identifiers to all remaining files in
 drivers/usb/

On Sun, Nov 05, 2017 at 01:53:54PM +0100, Philippe Ombredanne wrote:
> On Sat, Nov 4, 2017 at 11:40 AM, Greg Kroah-Hartman
> <gregkh@...uxfoundation.org> wrote:
> > On Fri, Nov 03, 2017 at 05:53:01PM +0100, Johan Hovold wrote:
> >> On Fri, Nov 03, 2017 at 11:28:30AM +0100, Greg Kroah-Hartman wrote:
> >> > It's good to have SPDX identifiers in all files to make it easier to
> >> > audit the kernel tree for correct licenses.
> >> >
> >> > Update the drivers/usb/ and include/linux/usb* files with the correct
> >> > SPDX license identifier based on the license text in the file itself.
> >> > The SPDX identifier is a legally binding shorthand, which can be used
> >> > instead of the full boiler plate text.
> >> >
> >> > This work is based on a script and data from Thomas Gleixner, Philippe
> >> > Ombredanne, and Kate Stewart.
> >> >
> >> > Cc: Thomas Gleixner <tglx@...utronix.de>
> >> > Cc: Kate Stewart <kstewart@...uxfoundation.org>
> >> > Cc: Philippe Ombredanne <pombredanne@...b.com>
> >> > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> >>
> >> I noticed several MODULE_LICENSE macros which did not match the headers
> >> (e.g. "GPL" being used for version 2 only modules) for which I'll send a
> >> follow-up patch.
> >>
> >> Someone should probably write a script for that once the SPDX
> >> identifiers are in.
> >
> > Yes, I think that someone might have a script for that, it will be much
> > easier to detect these things now.  The issue is that the "v2" marking
> > came after the original "GPL" marking for MODULE_LICENSE() from what I
> > remember, so many of those will be wrong.
> 
> If this can help my [1] tool can detect both header-level licenses-in-comments
> as well as MODULE_LICENSE macros. Based on that we could reasonably
> easily craft a script that scans a file and report discrepancies
> between the two.

That would be great, as there are going to be a lot of these showing up
soon, as we start adding the SPDX identifiers to the files based on the
license text and the mis-matches become obvious.

thanks,

greg k-h