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SubjectRe: linux-next: build failure after merge of the tip tree
Hi,

On Fri, Apr 03, 2020 at 04:15:11PM +0800, Baolin Wang wrote:
> On Wed, Apr 1, 2020 at 9:14 AM Stephen Rothwell <sfr@canb.auug.org.au> wrote:
> > On Thu, 26 Mar 2020 13:52:58 +1100 Stephen Rothwell <sfr@canb.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@canb.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@canb.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 for the reminder.

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

I will point Linus to this patch when I send my pull request.

-- Sebastian
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