[PATCH 39/39] ACPI: processor: Only call arch_unregister_cpu() if HOTPLUG_CPU is selected

Russell King
2023-10-24T15:23:22Z

The kbuild robot points out that configurations without HOTPLUG_CPU
selected can try to build acpi_processor_post_eject() without success
as arch_unregister_cpu() is not defined.

Check this explicitly. This will be merged into:
| ACPI: Add post_eject to struct acpi_scan_handler for cpu hotplug
for any subsequent posting.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: James Morse <james.morse@arm.com>
---
drivers/acpi/acpi_processor.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 539412ff59a1..5bb207a7a1dd 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -549,7 +549,7 @@ static void acpi_processor_post_eject(struct acpi_device *device)
unsigned long long sta;
acpi_status status;

- if (!device)
+ if (!IS_ENABLED(CONFIG_HOTPLUG_CPU) || !device)
return;

pr = acpi_driver_data(device);
--
2.30.2