diff mbox series

[v6,03/16] ACPI: processor: Drop duplicated check on _STA (enabled + present)

Message ID 20240417131909.7925-4-Jonathan.Cameron@huawei.com (mailing list archive)
State New
Headers show
Series ACPI/arm64: add support for virtual cpu hotplug | expand

Commit Message

Jonathan Cameron April 17, 2024, 1:18 p.m. UTC 
The ACPI bus scan will only result in acpi_processor_add() being called
if _STA has already been checked and the result is that the
processor is enabled and present.  Hence drop this additional check.

Suggested-by: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

---
v6: New patch to drop this unnecessary code. Now I think we only
    need to explicitly read STA to print a warning in the ARM64
    arch_unregister_cpu() path where we want to know if the
    present bit has been unset as well.
---
 drivers/acpi/acpi_processor.c | 6 ------
 1 file changed, 6 deletions(-)
diff mbox series

Patch

diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 7fc924aeeed0..ba0a6f0ac841 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -186,17 +186,11 @@  static void __init acpi_pcc_cpufreq_init(void) {}
 #ifdef CONFIG_ACPI_HOTPLUG_CPU
 static int acpi_processor_hotadd_init(struct acpi_processor *pr)
 {
-	unsigned long long sta;
-	acpi_status status;
 	int ret;
 
 	if (invalid_phys_cpuid(pr->phys_id))
 		return -ENODEV;
 
-	status = acpi_evaluate_integer(pr->handle, "_STA", NULL, &sta);
-	if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_PRESENT))
-		return -ENODEV;
-
 	cpu_maps_update_begin();
 	cpus_write_lock();