linux-kernel - Re: linux-next: build failure after merge of the pmdomain tree

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Message-ID: <CAMuHMdXQK2+-FaqK6FJWPYrS1TfASfZaJ0-VJBLdB53MZY_rxQ@mail.gmail.com>
Date: Thu, 27 Feb 2025 16:56:01 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Ulf Hansson <ulf.hansson@...aro.org>
Cc: Stephen Rothwell <sfr@...b.auug.org.au>, "Martin K. Petersen" <martin.petersen@...cle.com>, 
	Shawn Lin <shawn.lin@...k-chips.com>, 
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, 
	Linux Next Mailing List <linux-next@...r.kernel.org>, Heiko Stuebner <heiko@...ech.de>
Subject: Re: linux-next: build failure after merge of the pmdomain tree

Hi Ulf,

On Mon, 24 Feb 2025 at 13:27, Ulf Hansson <ulf.hansson@...aro.org> wrote:
> On Mon, 24 Feb 2025 at 06:20, Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> > On Mon, 24 Feb 2025 12:23:18 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> > > On Thu, 20 Feb 2025 11:33:38 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> > > > After merging the pmdomain tree, today's linux-next build (x86_64
> > > > allmodconfig) failed like this:
> > > >
> > > > x86_64-linux-gnu-ld: vmlinux.o: in function `rockchip_do_pmu_set_power_domain':
> > > > pm-domains.c:(.text+0x19aa103): undefined reference to `arm_smccc_1_1_get_conduit'
> > > >
> > > > Caused by commit
> > > >
> > > >   61eeb9678789 ("pmdomain: rockchip: Check if SMC could be handled by TA")
> > > >
> > > > $ grep CONFIG_HAVE_ARM_SMCCC_DISCOVERY .config
> > > > $
> > > >
> > > > I have used the pmdomain tree from next-20250219 for today.
> > >
> > > I am still seeing this build failure.
> >
> > And now that commit from the pmdomain tree has been merged into the
> > scsi-mkp tree and so the build failure happens there as well.
> >
> > I have used the scsi-mkp tree from next-20250221 for today.
> >
> > --
> > Cheers,
> > Stephen Rothwell
>
> Stephen, thanks for reporting and sorry for the delay.
>
> I have now fixed the problem on the next branch as well on the
> immutable rockchip branch. Martin, please pull again.

So this was fixed by adding a dependency on HAVE_ARM_SMCCC_DISCOVERY[1].

I am no Rockchip expert, but is this the correct fix?
As arch/arm/boot/dts/rockchip/rk3036.dtsi uses enable-method =
"rockchip,rk3036-smp", e.g. RK3036 does not depend on PSCI, so I assume
you could run a kernel without PSCI support on RK3036 before?

[1] https://web.git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm.git/commit/?h=next&id=bc4bc2a1609712e6c5de01be8a20341b710dc99b

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds