Merge branch 'acpi-pm' into pm-sleep

2 files changed, 16 insertions, 1 deletions

diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 18fb7a2fb14b..1ea328aafdc9 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1586,7 +1586,7 @@ swsusp_alloc(struct memory_bitmap *orig_bm, struct memory_bitmap *copy_bm,
         return -ENOMEM;
 }
 
-asmlinkage int swsusp_save(void)
+asmlinkage __visible int swsusp_save(void)
 {
         unsigned int nr_pages, nr_highmem;
 
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;