linux-kernel - Re: [PATCH 1/3] arch: Export machine_restart() instances so they can be called from modules

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Message-ID: <YRIxluiYdZo9OOAn@google.com>
Date:   Tue, 10 Aug 2021 08:58:14 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] arch: Export machine_restart() instances so they can
 be called from modules

On Mon, 09 Aug 2021, Geert Uytterhoeven wrote:

> On Tue, Aug 3, 2021 at 5:56 PM Lee Jones <lee.jones@...aro.org> wrote:
> > A recent attempt to convert the Power Reset Restart driver to tristate
> > failed because of the following compile error (reported once merged by
> > Stephen Rothwell via Linux Next):
> >
> >   ERROR: "machine_restart" [drivers/power/reset/restart-poweroff.ko] undefined!
> >
> > This error occurs since some of the machine_restart() instances are
> > not currently exported for use in modules.  This patch aims to rectify
> > that.
> >
> > Signed-off-by: Lee Jones <lee.jones@...aro.org>
> 
> > NB: If it's safe to omit some of these, let me know and I'll revise the patch.
> 
> How do you plan to handle that? Isn't this an all-or-nothing export?

That's the way I see it, but I don't have an in-depth knowledge of all
of the architectures.  There may be a method there that isn't part of
the core API.  If that's the case, I can drop the export.

> >  arch/m68k/kernel/process.c         | 1 +
> 
> Acked-by: Geert Uytterhoeven <geert@...ux-m68k.org>

Thanks Geert.

I'll pick this up when I do the re-spin shortly.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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