linux-kernel - Re: [PATCH 1/2] powerpc: drop dependency on <asm/machdep.h> in archrandom.h

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Message-ID: <CAHp75VcGPQkY9ApsX2fi6sK5=3U=0vKbrHZZ3x___wUtgrFRSA@mail.gmail.com>
Date:   Mon, 25 Jul 2022 23:39:39 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Yury Norov <yury.norov@...il.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        "open list:LINUX FOR POWERPC PA SEMI PWRFICIENT" 
        <linuxppc-dev@...ts.ozlabs.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: [PATCH 1/2] powerpc: drop dependency on <asm/machdep.h> in archrandom.h

On Mon, Jul 25, 2022 at 6:19 PM Yury Norov <yury.norov@...il.com> wrote:
> On Mon, Jul 25, 2022 at 09:28:12AM +0200, Andy Shevchenko wrote:
> > On Sun, Jul 24, 2022 at 12:19 AM Yury Norov <yury.norov@...il.com> wrote:

...

> > >  EXPORT_SYMBOL_GPL(pm_power_off);
> >
> > ^^^ (Note this and read below)
> >
> > ...
> >
> > > +EXPORT_SYMBOL(arch_get_random_seed_long);
> >
> > It can't be like this. Brief browsing of the callees shows that.
>
> Is my understanding correct that you're suggesting to make it GPL?
>
> ppc_md is exported with EXPORT_SYMBOL(), and the function is in header,
> so it's available for non-GPL code now. I don't want to change it.

The symbols your function calls are GPL. As far as I understand (not a
lawyer!) it logically one may not call GPL and pretend to be non-GPL.

-- 
With Best Regards,
Andy Shevchenko