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| author | Huisong Li <lihuisong@huawei.com> | 2025-09-23 11:24:28 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-09-23 15:33:19 +0200 |
| commit | 559f2eacc8a23c7f44daac09d4f3efd958d497f2 (patch) | |
| tree | 020ae78bb03f1d3cccf710ef3f9c3be65a9b8ea7 /drivers/acpi/processor_idle.c | |
| parent | fbd401e95e569ad0307e4301012f2d8e1ec1ee98 (diff) | |
| download | linux-559f2eacc8a23c7f44daac09d4f3efd958d497f2.tar.gz linux-559f2eacc8a23c7f44daac09d4f3efd958d497f2.tar.bz2 linux-559f2eacc8a23c7f44daac09d4f3efd958d497f2.zip | |
ACPI: processor: Do not expose global variable acpi_idle_driver
Move the cpuidle driver check from __acpi_processor_start() to
acpi_processor_power_init() which allows variable acpi_idle_driver to
become static.
No intentional functional impact.
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Link: https://patch.msgid.link/20250923032428.2656329-2-lihuisong@huawei.com
[ rjw: Subject tweak, new changelog, adjustment of a new comment ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/processor_idle.c')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 698d14c19587..22b051b94a86 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -51,7 +51,7 @@ module_param(latency_factor, uint, 0644); static DEFINE_PER_CPU(struct cpuidle_device *, acpi_cpuidle_device); -struct cpuidle_driver acpi_idle_driver = { +static struct cpuidle_driver acpi_idle_driver = { .name = "acpi_idle", .owner = THIS_MODULE, }; @@ -1404,6 +1404,13 @@ void acpi_processor_power_init(struct acpi_processor *pr) { struct cpuidle_device *dev; + /* + * The code below only works if the current cpuidle driver is the ACPI + * idle driver. + */ + if (cpuidle_get_driver() != &acpi_idle_driver) + return; + if (disabled_by_idle_boot_param()) return; |