[PATCH 36/37] Hibernation: Invoke suspend notifications after console switch

[Len Brown]

From: Rafael J. Wysocki <[EMAIL PROTECTED]>

Following the recent change in the suspend code path, switch consoles before
calling PM notifiers during hibernation.

Signed-off-by: Rafael J. Wysocki <[EMAIL PROTECTED]>
Signed-off-by: Len Brown <[EMAIL PROTECTED]>
---
 kernel/power/disk.c |   17 +++++++----------
 1 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index 53c22d9..d09da08 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -458,20 +458,13 @@ static void power_down(void)
        while(1);
 }
 
-static void unprepare_processes(void)
-{
-       thaw_processes();
-       pm_restore_console();
-}
-
 static int prepare_processes(void)
 {
        int error = 0;
 
-       pm_prepare_console();
        if (freeze_processes()) {
                error = -EBUSY;
-               unprepare_processes();
+               thaw_processes();
        }
        return error;
 }
@@ -491,6 +484,7 @@ int hibernate(void)
                goto Unlock;
        }
 
+       pm_prepare_console();
        error = pm_notifier_call_chain(PM_HIBERNATION_PREPARE);
        if (error)
                goto Exit;
@@ -530,11 +524,12 @@ int hibernate(void)
                swsusp_free();
        }
  Thaw:
-       unprepare_processes();
+       thaw_processes();
  Finish:
        free_basic_memory_bitmaps();
  Exit:
        pm_notifier_call_chain(PM_POST_HIBERNATION);
+       pm_restore_console();
        atomic_inc(&snapshot_device_available);
  Unlock:
        mutex_unlock(&pm_mutex);
@@ -603,6 +598,7 @@ static int software_resume(void)
                goto Unlock;
        }
 
+       pm_prepare_console();
        error = pm_notifier_call_chain(PM_RESTORE_PREPARE);
        if (error)
                goto Finish;
@@ -626,11 +622,12 @@ static int software_resume(void)
 
        printk(KERN_ERR "PM: Restore failed, recovering.\n");
        swsusp_free();
-       unprepare_processes();
+       thaw_processes();
  Done:
        free_basic_memory_bitmaps();
  Finish:
        pm_notifier_call_chain(PM_POST_RESTORE);
+       pm_restore_console();
        atomic_inc(&snapshot_device_available);
        /* For success case, the suspend path will release the lock */
  Unlock:
-- 
1.5.4.rc5.16.gc0279

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