From b340c7d6f619ad63d1896a6debceea1de3a78f29 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Mon, 18 Oct 2021 15:17:24 +0300 Subject: ACPI: scan: Obtain device's desired enumeration power state Store a device's desired enumeration power state in struct acpi_device_power during acpi_device object's initialisation. Signed-off-by: Sakari Ailus Signed-off-by: Rafael J. Wysocki --- drivers/acpi/scan.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/acpi') diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index dce2c291b982..a50f1967c73d 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1017,6 +1017,7 @@ static void acpi_bus_init_power_state(struct acpi_device *device, int state) static void acpi_bus_get_power_flags(struct acpi_device *device) { + unsigned long long dsc = ACPI_STATE_D0; u32 i; /* Presence of _PS0|_PR0 indicates 'power manageable' */ @@ -1038,6 +1039,9 @@ static void acpi_bus_get_power_flags(struct acpi_device *device) if (acpi_has_method(device->handle, "_DSW")) device->power.flags.dsw_present = 1; + acpi_evaluate_integer(device->handle, "_DSC", NULL, &dsc); + device->power.state_for_enumeration = dsc; + /* * Enumerate supported power management states */ -- cgit v1.2.3