From: Rafael J. Wysocki Date: Mon, 7 Jul 2008 01:30:55 +0000 (+0200) Subject: ACPI: Introduce acpi_bus_power_manageable function X-Git-Tag: v2.6.27-rc1~1046^2~14 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3737b2b1046900660b42e25c904b85e78139d25b;p=linux-2.6 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 Acked-by: Pavel Machek Signed-off-by: Jesse Barnes --- diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index a6dbcf4d9e..b9b69d9629 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 -------------------------------------------------------------------------- */ diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index db90a74f87..0c21ea3bb6 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -335,6 +335,7 @@ void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context); int acpi_bus_get_status(struct acpi_device *device); int acpi_bus_get_power(acpi_handle handle, int *state); int acpi_bus_set_power(acpi_handle handle, int state); +bool acpi_bus_power_manageable(acpi_handle handle); #ifdef CONFIG_ACPI_PROC_EVENT int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data); int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);