[PATCH v2 3/3] ACPI: processor: idle: Remove redundant static variable and rename cstate check function

[Huisong Li]

The function acpi_processor_cstate_first_run_checks() is currently called
only once during initialization in acpi_processor_register_idle_driver().
Because 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.  Rename the function to acpi_processor_update_max_cstate()
to better reflect its actual purpose.

Signed-off-by: Huisong Li <lihuisong@xxxxxxxxxx>
---
 drivers/acpi/processor_idle.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 62277daf874e..d12da8cb8706 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -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;
@@ -1357,7 +1351,7 @@ 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.
-- 
2.33.0