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Commit 5a0a2f30 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki Committed by Len Brown
Browse files

Hibernation: Invoke suspend notifications after console switch 



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

Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent af258f51

kernel/power/disk.c

+7 −10
Original line number Diff line number Diff line
@@ -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: