Commit b340c7d6 authored by Sakari Ailus's avatar Sakari Ailus Committed by Rafael J. Wysocki
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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: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent c0d6586a

drivers/acpi/scan.c

+4 −0
Original line number Diff line number Diff line
@@ -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

	 */

include/acpi/acpi_bus.h

+1 −0
Original line number Diff line number Diff line
@@ -278,6 +278,7 @@ struct acpi_device_power { 
	int state;		/* Current state */

	struct acpi_device_power_flags flags;

	struct acpi_device_power_state states[ACPI_D_STATE_COUNT];	/* Power states (D0-D3Cold) */

	u8 state_for_enumeration; /* Deepest power state for enumeration */

};



struct acpi_dep_data {