From: Johannes Berg <johannes@sipsolutions.net>
Date: Fri, 11 Jan 2008 00:22:23 +0000 (+0100)
Subject: Suspend: Invoke suspend notifications after console switch
X-Git-Tag: v2.6.25-rc1~1073^2~3
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=af258f516b3e4e214121f5d6d53cab32ce0d8010;p=linux-2.6-omap-h63xx.git

Suspend: Invoke suspend notifications after console switch

In order to fix APM emulation it is necessary to enable apm-emulation
notifications for suspends triggered in various ways via the suspend
notifiers.  However, this will cause the systems using APM emulation
to lock up between X being needed to switch away from the VT and X
already waiting for resume in the APM ioctl.

This patch moves the console switch (if enabled) before the suspend
notification (and after the resume notification) to avoid this issue.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
---

diff --git a/kernel/power/main.c b/kernel/power/main.c
index e47214cfeb2..6a6d5eb3524 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -175,12 +175,12 @@ static int suspend_prepare(void)
 	if (!suspend_ops || !suspend_ops->enter)
 		return -EPERM;
 
+	pm_prepare_console();
+
 	error = pm_notifier_call_chain(PM_SUSPEND_PREPARE);
 	if (error)
 		goto Finish;
 
-	pm_prepare_console();
-
 	if (suspend_freeze_processes()) {
 		error = -EAGAIN;
 		goto Thaw;
@@ -200,9 +200,9 @@ static int suspend_prepare(void)
 
  Thaw:
 	suspend_thaw_processes();
-	pm_restore_console();
  Finish:
 	pm_notifier_call_chain(PM_POST_SUSPEND);
+	pm_restore_console();
 	return error;
 }
 
@@ -309,8 +309,8 @@ int suspend_devices_and_enter(suspend_state_t state)
 static void suspend_finish(void)
 {
 	suspend_thaw_processes();
-	pm_restore_console();
 	pm_notifier_call_chain(PM_POST_SUSPEND);
+	pm_restore_console();
 }