Re: [chrony-users] PPS GPIO polling driver license

[Bill Unruh <unruh@xxxxxxxxxxxxxx>]

So you are worried that if you write a non-GPL program which uses the pps
gpio, you will get sued for your own program being a derived work of PPS-gpio?

William G. Unruh __| Canadian Institute for|____ Tel: +1(604)822-3273
Physics&Astronomy _|___ Advanced Research _|____ Fax: +1(604)822-5324
UBC, Vancouver,BC _|_ Program in Cosmology |____ unruh@xxxxxxxxxxxxxx
Canada V6T 1Z1 ____|____ and Gravity ______|_    theory.physics.ubc.ca/

On Fri, 7 Jul 2023, Thangalin wrote:

> [CAUTION: Non-UBC Email]Thanks again, Bill.
>
> > The SPDX seems to apply to the .h files associated with the driver, not the driver itself.
> > Use of the driver by a program seems not to make the useing program a derived work,
>
> This is also my understanding.
>
> > so there is no need to have a special license.
>
> Except the PPS GPIO poll source code isn't distributed _with_ the Linux kernel. That is, it isn't part of the kernel
> repository. As such, I don't think it is safe to assume the Linux syscall exception applies to the source code.
>
> > Perhaps if you told us why you are asking and what you want to do it would make it easier.
>
> I have another post coming that'll provide more details of what I'm trying to accomplish. I'd prefer to keep this
> thread on the topic of the license itself.
>
> > What would you like the license to say?
>
> It would be nice if the license made explicit reference to the Linux syscall exception. That is, being released
> under SPDX GPL-2.0 with Linux-syscall-note.
>
> Thanks again!

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