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ACPI: processor: idle: Remove redundant static variable and rename cstate check function

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The function acpi_processor_cstate_first_run_checks() is currently called
only once during initialization in acpi_processor_register_idle_driver().

Since its execution is already limited by the caller's lifecycle, the
internal static 'first_run' variable is redundant and can be safely
removed.

Additionally, the current function name is no longer descriptive of its
behavior, so rename the function to acpi_processor_update_max_cstate()
to better reflect its actual purpose.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Link: https://patch.msgid.link/20260311065038.4151558-4-lihuisong@huawei.com
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Huisong Li 2026-03-11 14:50:38 +08:00 committed by Rafael J. Wysocki
parent 1f23194c8b
commit 4d613fb1ea
1 changed files with 3 additions and 9 deletions
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12
drivers/acpi/processor_idle.c
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@ -819,19 +819,13 @@ static void acpi_processor_setup_cstates(struct acpi_processor *pr)
drv->state_count = count;
}
static inline void acpi_processor_cstate_first_run_checks(void)
static inline void acpi_processor_update_max_cstate(void)
{
static int first_run;
if (first_run)
return;
dmi_check_system(processor_power_dmi_table);
max_cstate = acpi_processor_cstate_check(max_cstate);
if (max_cstate < ACPI_C_STATES_MAX)
pr_notice("processor limited to max C-state %d\n", max_cstate);
first_run++;
if (nocst)
return;
@ -840,7 +834,7 @@ static inline void acpi_processor_cstate_first_run_checks(void)
#else
static inline int disabled_by_idle_boot_param(void) { return 0; }
static inline void acpi_processor_cstate_first_run_checks(void) { }
static inline void acpi_processor_update_max_cstate(void) { }
static int acpi_processor_get_cstate_info(struct acpi_processor *pr)
{
return -ENODEV;
@ -1359,7 +1353,7 @@ void acpi_processor_register_idle_driver(void)
int ret = -ENODEV;
int cpu;
acpi_processor_cstate_first_run_checks();
acpi_processor_update_max_cstate();
/*
* ACPI idle driver is used by all possible CPUs.