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Merge branch 'acpi-pm'

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* acpi-pm:
  ACPI / PM: Export rest of the subsys PM callbacks
  ACPI / PM: Avoid resuming devices in ACPI PM domain during system suspend
  ACPI / PM: Hold ACPI scan lock over the "freeze" sleep state
  ACPI / PM: Export acpi_target_system_state() to modules
This commit is contained in:
Rafael J. Wysocki 2014-06-03 23:11:42 +02:00
commit a392f7d4af
7 changed files with 92 additions and 8 deletions
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15
kernel/power/suspend.c
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@ -38,6 +38,7 @@ struct pm_sleep_state pm_states[PM_SUSPEND_MAX] = {
};
static const struct platform_suspend_ops *suspend_ops;
static const struct platform_freeze_ops *freeze_ops;
static bool need_suspend_ops(suspend_state_t state)
{
@ -47,6 +48,13 @@ static bool need_suspend_ops(suspend_state_t state)
static DECLARE_WAIT_QUEUE_HEAD(suspend_freeze_wait_head);
static bool suspend_freeze_wake;
void freeze_set_ops(const struct platform_freeze_ops *ops)
{
lock_system_sleep();
freeze_ops = ops;
unlock_system_sleep();
}
static void freeze_begin(void)
{
suspend_freeze_wake = false;
@ -291,6 +299,10 @@ int suspend_devices_and_enter(suspend_state_t state)
error = suspend_ops->begin(state);
if (error)
goto Close;
} else if (state == PM_SUSPEND_FREEZE && freeze_ops->begin) {
error = freeze_ops->begin();
if (error)
goto Close;
}
suspend_console();
suspend_test_start();
@ -316,6 +328,9 @@ int suspend_devices_and_enter(suspend_state_t state)
Close:
if (need_suspend_ops(state) && suspend_ops->end)
suspend_ops->end();
else if (state == PM_SUSPEND_FREEZE && freeze_ops->end)
freeze_ops->end();
trace_machine_suspend(PWR_EVENT_EXIT);
return error;