Commit 3bc3dc16 authored by Maciej S. Szmigiero's avatar Maciej S. Szmigiero Committed by Rafael J. Wysocki
Browse files

ACPI: PM: Add power resource init function 



This way DMI based quirk matching and quirk flag initialization can be done
just once - in the newly introduced acpi_power_resources_init() function,
which is similar to existing acpi_*_init() functions.

Convert the single already existing DMI match-based quirk in this ACPI
power resource handler ("leave unused power resources on" quirk) to such
one-time initialization in acpi_power_resources_init() function instead of
re-running that DMI match each time acpi_turn_off_unused_power_resources()
gets called.

Signed-off-by: default avatarMaciej S. Szmigiero <mail@maciej.szmigiero.name>
Link: https://patch.msgid.link/b173a6987f0b35597fd82400cb28f289786e03d0.1754243159.git.mail@maciej.szmigiero.name


Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 1b237f19

drivers/acpi/internal.h

+1 −0
Original line number Diff line number Diff line
@@ -140,6 +140,7 @@ int __acpi_device_uevent_modalias(const struct acpi_device *adev, 
/* --------------------------------------------------------------------------

                                  Power Resource

   -------------------------------------------------------------------------- */

void acpi_power_resources_init(void);

void acpi_power_resources_list_free(struct list_head *list);

int acpi_extract_power_resources(union acpi_object *package, unsigned int start,

				 struct list_head *list);

drivers/acpi/power.c

+9 −1
Original line number Diff line number Diff line
@@ -63,6 +63,8 @@ struct acpi_power_resource_entry { 
	struct acpi_power_resource *resource;

};



static bool unused_power_resources_quirk;



static LIST_HEAD(acpi_power_resource_list);

static DEFINE_MUTEX(power_resource_list_lock);
@@ -1046,7 +1048,7 @@ void acpi_turn_off_unused_power_resources(void) 
{

	struct acpi_power_resource *resource;



	if (dmi_check_system(dmi_leave_unused_power_resources_on))

	if (unused_power_resources_quirk)

		return;



	mutex_lock(&power_resource_list_lock);
@@ -1065,3 +1067,9 @@ void acpi_turn_off_unused_power_resources(void) 


	mutex_unlock(&power_resource_list_lock);

}



void __init acpi_power_resources_init(void)

{

	unused_power_resources_quirk =

		dmi_check_system(dmi_leave_unused_power_resources_on);

}

drivers/acpi/scan.c

+1 −0
Original line number Diff line number Diff line
@@ -2702,6 +2702,7 @@ void __init acpi_scan_init(void) 
	acpi_memory_hotplug_init();

	acpi_watchdog_init();

	acpi_pnp_init();

	acpi_power_resources_init();

	acpi_int340x_thermal_init();

	acpi_init_lpit();