From 3737b2b1046900660b42e25c904b85e78139d25b Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rjw@sisk.pl>
Date: Mon, 7 Jul 2008 03:30:55 +0200
Subject: ACPI: Introduce acpi_bus_power_manageable function
Introduce function acpi_bus_power_manageable() allowing other
(dependent) subsystems to check if ACPI is able to power manage given
device. This may be useful, for example, for PCI device power
management.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
---
drivers/acpi/bus.c | 11 +++++++++++
1 file changed, 11 insertions(+)
(limited to 'drivers')
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index a6dbcf4d9ef5..b9b69d9629b5 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -295,6 +295,17 @@ int acpi_bus_set_power(acpi_handle handle, int state)
EXPORT_SYMBOL(acpi_bus_set_power);
+bool acpi_bus_power_manageable(acpi_handle handle)
+{
+ struct acpi_device *device;
+ int result;
+
+ result = acpi_bus_get_device(handle, &device);
+ return result ? false : device->flags.power_manageable;
+}
+
+EXPORT_SYMBOL(acpi_bus_power_manageable);
+
/* --------------------------------------------------------------------------
Event Management
-------------------------------------------------------------------------- */
--
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