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linux-sg2042
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Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  ACPI / PM: Avoid infinite recurrence while registering power resources
  PM / Wakeup: Fix initialization of wakeup-related device sysfs files
This commit is contained in:
Linus Torvalds 2011-04-27 15:20:00 -07:00
parent 0fd97ab489 7bed50c5ed
commit be6b694713
3 changed files with 6 additions and 1 deletions
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4
drivers/acpi/scan.c
View File

@ -943,6 +943,10 @@ static int acpi_bus_get_flags(struct acpi_device *device)
if (ACPI_SUCCESS(status))
device->flags.lockable = 1;
/* Power resources cannot be power manageable. */
if (device->device_type == ACPI_BUS_TYPE_POWER)
return 0;
/* Presence of _PS0|_PR0 indicates 'power manageable' */
status = acpi_get_handle(device->handle, "_PS0", &temp);
if (ACPI_FAILURE(status))

1
drivers/base/power/main.c
View File

@ -63,6 +63,7 @@ void device_pm_init(struct device *dev)
dev->power.wakeup = NULL;
spin_lock_init(&dev->power.lock);
pm_runtime_init(dev);
INIT_LIST_HEAD(&dev->power.entry);
}
/**

2
drivers/base/power/wakeup.c
View File

@ -258,7 +258,7 @@ void device_set_wakeup_capable(struct device *dev, bool capable)
if (!!dev->power.can_wakeup == !!capable)
return;
if (device_is_registered(dev)) {
if (device_is_registered(dev) && !list_empty(&dev->power.entry)) {
if (capable) {
if (wakeup_sysfs_add(dev))
return;