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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-06-04 01:11:42 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-06-04 01:11:42 +0400
commita392f7d4afb850934851fde5a8e298912650a6b8 (patch)
treeed9901ba019615f6911c0f9f1a3af180b243bc8f /kernel
parentf58c41cc0427115e3d750ec090020892acf0fb9c (diff)
parent4cf563c5d97c83d4b2fb3a778dd7d5e362cc3e34 (diff)
downloadlinux-a392f7d4afb850934851fde5a8e298912650a6b8.tar.xz
Merge branch 'acpi-pm'
* 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
Diffstat (limited to 'kernel')
-rw-r--r--kernel/power/suspend.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 338a6f147974..963e6d0f050b 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -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;