Add support for suspending and resuming the whole console subsystem

Trying to suspend/resume with console messages flying all around is
doomed to failure, when the devices that the messages are trying to
go to are being shut down.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/power/main.c

@@ -86,6 +86,7 @@ static int suspend_prepare(suspend_state_t state)
 			goto Thaw;
 	}
 
+	suspend_console();
 	if ((error = device_suspend(PMSG_SUSPEND))) {
 		printk(KERN_ERR "Some devices failed to suspend\n");
 		goto Finish;
@@ -133,6 +134,7 @@ int suspend_enter(suspend_state_t state)
 static void suspend_finish(suspend_state_t state)
 {
 	device_resume();
+	resume_console();
 	thaw_processes();
 	enable_nonboot_cpus();
 	if (pm_ops && pm_ops->finish)