ACPI: Introduce acpi_bus_power_manageable function

[linux-2.6-omap-h63xx.git] / drivers / acpi / bus.c

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 5b6760e0f9571d20e34dcb47346c354ad6dff116..b9b69d9629b585a461b09af679533eb9d0c386a9 100644 (file)
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -35,6 +35,7 @@
 #ifdef CONFIG_X86
 #include <asm/mpspec.h>
 #endif
+#include <linux/pci.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 
@@ -294,6 +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
    -------------------------------------------------------------------------- */
@@ -373,10 +385,11 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
        }
 
        spin_lock_irqsave(&acpi_bus_event_lock, flags);
-       entry =
-           list_entry(acpi_bus_event_list.next, struct acpi_bus_event, node);
-       if (entry)
+       if (!list_empty(&acpi_bus_event_list)) {
+               entry = list_entry(acpi_bus_event_list.next,
+                                  struct acpi_bus_event, node);
                list_del(&entry->node);
+       }
        spin_unlock_irqrestore(&acpi_bus_event_lock, flags);
 
        if (!entry)
@@ -783,6 +796,7 @@ static int __init acpi_init(void)
        result = acpi_bus_init();
 
        if (!result) {
+               pci_mmcfg_late_init();
                if (!(pm_flags & PM_APM))
                        pm_flags |= PM_ACPI;
                else {