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

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Message-ID: <CADBw62qar4qPJmjZj1+9tb6sgqUcCrjei6G62wPaH=YVf48=zA@mail.gmail.com>
Date:   Fri, 3 Apr 2020 16:15:11 +0800
From:   Baolin Wang <baolin.wang7@...il.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
        "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Sebastian Reichel <sre@...nel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Qais Yousef <qais.yousef@....com>
Subject: Re: linux-next: build failure after merge of the tip tree

On Wed, Apr 1, 2020 at 9:14 AM Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Hi all,
>
> On Thu, 26 Mar 2020 13:52:58 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> >
> > Hi all,
> >
> > After merging the tip tree, today's linux-next build (x86_64 allmodconfig)
> > failed like this:
> >
> > drivers/power/reset/sc27xx-poweroff.c: In function 'sc27xx_poweroff_shutdown':
> > drivers/power/reset/sc27xx-poweroff.c:38:4: error: implicit declaration of function 'cpu_down' [-Werror=implicit-function-declaration]
> >    38 |    cpu_down(cpu);
> >       |    ^~~~~~~~
> >
> > Caused by commit
> >
> >   33c3736ec888 ("cpu/hotplug: Hide cpu_up/down()")
> >
> > interacting with commit
> >
> >   274afbc3ad33 ("power: reset: sc27xx: Change to use cpu_down()")
> >
> > from the battery tree.
> >
> > I have added the following merge fix patch:
> >
> > From: Stephen Rothwell <sfr@...b.auug.org.au>
> > Date: Thu, 26 Mar 2020 13:42:00 +1100
> > Subject: [PATCH] power: reset: sc27xx: use remove_cpu instead of cpu_down
> >
> > Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
> > ---
> >  drivers/power/reset/sc27xx-poweroff.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/power/reset/sc27xx-poweroff.c b/drivers/power/reset/sc27xx-poweroff.c
> > index 69863074daf6..90287c31992c 100644
> > --- a/drivers/power/reset/sc27xx-poweroff.c
> > +++ b/drivers/power/reset/sc27xx-poweroff.c
> > @@ -35,7 +35,7 @@ static void sc27xx_poweroff_shutdown(void)
> >
> >       for_each_online_cpu(cpu) {
> >               if (cpu != smp_processor_id())
> > -                     cpu_down(cpu);
> > +                     remove_cpu(cpu);
> >       }
> >  #endif
> >  }
> > --
> > 2.25.0
>
> This fixup is now needed when the battery tree is merged into Linus' tree.

Thanks Stephen.

Sebastian, could you pick up this patch to avoid the compiling issue? Thanks.

-- 
Baolin Wang