[PATCH RFC v3 18/21] ACPI: processor: Only call arch_unregister_cpu() if HOTPLUG_CPU is selected
Russell King (Oracle)
rmk+kernel at armlinux.org.uk
Wed Dec 13 04:50:43 PST 2023
From: James Morse <james.morse at arm.com>
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 at intel.com>
Signed-off-by: James Morse <james.morse at arm.com>
Tested-by: Miguel Luis <miguel.luis at oracle.com>
Tested-by: Vishnu Pajjuri <vishnu at os.amperecomputing.com>
Tested-by: Jianyong Wu <jianyong.wu at arm.com>
---
This should probably be squashed into an earlier patch.
---
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 5dabb426481f..ea12e70dfd39 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -537,7 +537,7 @@ 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
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