acpi, numa: introduce ACPI_HAS_NUMA_ARCH_FIXUP

acpi_numa_arch_fixup() is only used for IA64, x86 introduce a dummy
function for it, when we came to a new architecture (such as ARM64),
we need to introduce another dummy one to make the code compile.

That's pretty boring so introduce ACPI_HAS_NUMA_ARCH_FIXUP and
select it for IA64, introduce a stub function for acpi_numa_arch_fixup()
then it's pretty clean for x86 and ARM64.

Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>

2 files changed, 1 insertions, 2 deletions

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index eb0249e37981..1285cef47211 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -17,6 +17,7 @@ config IA64
 	select ACPI if (!IA64_HP_SIM)
 	select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
 	select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
+	select ACPI_HAS_NUMA_ARCH_FIXUP if ACPI
 	select HAVE_UNSTABLE_SCHED_CLOCK
 	select HAVE_IDE
 	select HAVE_OPROFILE
diff --git a/arch/x86/mm/srat.c b/arch/x86/mm/srat.c
index c2aea63bee20..9fa17461e1e5 100644
--- a/arch/x86/mm/srat.c
+++ b/arch/x86/mm/srat.c
@@ -210,8 +210,6 @@ out_err:
 	return -1;
 }
 
-void __init acpi_numa_arch_fixup(void) {}
-
 int __init x86_acpi_numa_init(void)
 {
 	int ret;