[RFC/RFT PATCH 3/6] arm64, numa: Move pcibus_to_node definition to generic numa code

[Atish Patra <atish.patra@wdc.com>]

pcibus_to_node is used only when numa is enabled and does not depend
on ISA. Thus, it can be moved the generic numa implementation.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
---
 arch/arm64/kernel/pci.c  | 10 ----------
 drivers/base/arch_numa.c | 11 +++++++++++
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
index 1006ed2d7c60..07c122946c11 100644
--- a/arch/arm64/kernel/pci.c
+++ b/arch/arm64/kernel/pci.c
@@ -54,16 +54,6 @@ int raw_pci_write(unsigned int domain, unsigned int bus,
 	return b->ops->write(b, devfn, reg, len, val);
 }
 
-#ifdef CONFIG_NUMA
-
-int pcibus_to_node(struct pci_bus *bus)
-{
-	return dev_to_node(&bus->dev);
-}
-EXPORT_SYMBOL(pcibus_to_node);
-
-#endif
-
 #ifdef CONFIG_ACPI
 
 struct acpi_pci_generic_root_info {
diff --git a/drivers/base/arch_numa.c b/drivers/base/arch_numa.c
index 83341c807240..4ab1b20a615d 100644
--- a/drivers/base/arch_numa.c
+++ b/drivers/base/arch_numa.c
@@ -11,6 +11,7 @@
 #include <linux/acpi.h>
 #include <linux/memblock.h>
 #include <linux/module.h>
+#include <linux/pci.h>
 #include <linux/of.h>
 
 #ifdef CONFIG_ARM64
@@ -60,6 +61,16 @@ EXPORT_SYMBOL(cpumask_of_node);
 
 #endif
 
+#ifdef CONFIG_PCI
+
+int pcibus_to_node(struct pci_bus *bus)
+{
+	return dev_to_node(&bus->dev);
+}
+EXPORT_SYMBOL(pcibus_to_node);
+
+#endif
+
 static void numa_update_cpu(unsigned int cpu, bool remove)
 {
 	int nid = cpu_to_node(cpu);
-- 
2.24.0