From: Miao Wang <redacted>

To avoid arch-specific code in general ACPI initialization flow,
we introduce a weak symbol acpi_arch_init. Currently, arm64 can
utillize this to insert its specific flow. In the future,
other architectures can also have chance to define their own
arch-specific acpi initialization process if necessary.

Signed-off-by: Miao Wang <redacted>
---
Changes from v1
- Change acpi_arch_init from a static inline stub to a weak function
  according to Haijun Guo's advice
---
 drivers/acpi/arm64/init.c | 2 +-
 drivers/acpi/bus.c        | 4 +++-
 include/linux/acpi.h      | 6 +-----
 3 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/acpi/arm64/init.c b/drivers/acpi/arm64/init.c
index d0c8aed90fd1..7a47d8095a7d 100644
--- a/drivers/acpi/arm64/init.c
+++ b/drivers/acpi/arm64/init.c

@@ -2,7 +2,7 @@
 #include <linux/acpi.h>
 #include "init.h"
 
-void __init acpi_arm_init(void)
+void __init acpi_arch_init(void)
 {
 	if (IS_ENABLED(CONFIG_ACPI_AGDI))
 		acpi_agdi_init();

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 284bc2e03580..b47541e45a5a 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c

@@ -1431,6 +1431,8 @@ static int __init acpi_bus_init(void)
 struct kobject *acpi_kobj;
 EXPORT_SYMBOL_GPL(acpi_kobj);
 
+void __weak acpi_arch_init(void) { }
+
 static int __init acpi_init(void)
 {
 	int result;

@@ -1458,7 +1460,7 @@ static int __init acpi_init(void)
 	acpi_viot_early_init();
 	acpi_hest_init();
 	acpi_ghes_init();
-	acpi_arm_init();
+	acpi_arch_init();
 	acpi_scan_init();
 	acpi_ec_init();
 	acpi_debugfs_init();

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 0687a442fec7..52862c377747 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h

@@ -1523,11 +1523,7 @@ static inline int find_acpi_cpu_topology_hetero_id(unsigned int cpu)
 }
 #endif
 
-#ifdef CONFIG_ARM64
-void acpi_arm_init(void);
-#else
-static inline void acpi_arm_init(void) { }
-#endif
+void acpi_arch_init(void);