powerpc/pseries: Fix build break for SPLPAR=n and CPU hotplug

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Commit e67e02a544 ("powerpc/pseries: Fix cpu hotplug crash with
memoryless nodes") adds an unconditional call to
find_and_online_cpu_nid(), which is only declared if CONFIG_PPC_SPLPAR
is enabled. This results in the following build error if this is not
the case.

  arch/powerpc/platforms/pseries/hotplug-cpu.o: In function `dlpar_online_cpu':
  arch/powerpc/platforms/pseries/hotplug-cpu.c:369:
  			undefined reference to `.find_and_online_cpu_nid'

Follow the guideline provided by similar functions and provide a dummy
function if CONFIG_PPC_SPLPAR is not enabled. This also moves the
external function declaration into an include file where it should be.

Fixes: e67e02a544 ("powerpc/pseries: Fix cpu hotplug crash with memoryless nodes")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
[mpe: Change subject to emphasise the build fix]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

...

This commit is contained in:

Guenter Roeck 2018-02-12 14:34:08 -08:00 • committed by Michael Ellerman

parent fc5c2f4a55

commit 82343484a2

2 changed files with 5 additions and 2 deletions

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5

arch/powerpc/include/asm/topology.h

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2

arch/powerpc/platforms/pseries/hotplug-cpu.c

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