linux-kernel - Re: [GIT PATCH] ACPI patches for 2.6.22

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Message-Id: <200704291417.02362.rjw@sisk.pl>
Date:	Sun, 29 Apr 2007 14:17:01 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Matt Mackall <mpm@...enic.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Len Brown <lenb@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Miles Lane <miles.lane@...il.com>, lollul@...pl,
	Helge Hafting <helgehaf@...el.hist.no>
Subject: Re: [GIT PATCH] ACPI patches for 2.6.22

On Sunday, 29 April 2007 13:52, Matt Mackall wrote:
> On Sun, Apr 29, 2007 at 01:01:04AM -0700, Andrew Morton wrote:
> > On Sun, 29 Apr 2007 01:02:33 -0400 Len Brown <lenb@...nel.org> wrote:
> > 
> > > please pull from: 
> > > 
> > > git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6.git release
> > > 
> > > This batch mostly updates the platform-specific drivers that use ACPI.
> > > The EC and sbs changes are primarily cleanups.
> > > There are no changes to the ACPICA core, except a single bugfix
> > > that was related to a 2.6.21 boot regression on some older machines.
> > > And then the usual mix of random tweaks.
> > 
> > There might still be a few regressions in this lot:
> > 
> > - Miles Lane's "2.6.21-rc7-mm2 -- gnome-power-manager always shows the
> >   power as coming from AC"
> > 
> > - "battery caching introduces a lock up"
> >   http://bugzilla.kernel.org/show_bug.cgi?id=8351
> > 
> > These are older and might have been fixed:
> > 
> > - Mat Mackall's "Thinkpads not waking up on lid open with -rc6-mm1"
> 
> This seems to be related to suspend to disk. After the first suspend
> to disk/resume, suspend to ram stops resuming from lid open and needs
> me to hit the power button. As I just started using suspend to disk in
> the past couple weeks, this may be a long-standing bug.
> 
> I think it's still present in -rc7-mm1 but I don't have my laptop
> handy to double-check.

Can you please check if the appended debug patch helps?

Rafael

---
 kernel/power/disk.c |    4 ++--
 kernel/power/user.c |    8 ++++----
 2 files changed, 6 insertions(+), 6 deletions(-)

Index: linux-2.6.21-rc7/kernel/power/disk.c
===================================================================
--- linux-2.6.21-rc7.orig/kernel/power/disk.c
+++ linux-2.6.21-rc7/kernel/power/disk.c
@@ -170,9 +170,9 @@ int pm_suspend_disk(void)
 
 	if (in_suspend) {
 		enable_nonboot_cpus();
-		platform_finish();
 		device_resume();
 		resume_console();
+		platform_finish();
 		pr_debug("PM: writing image.\n");
 		error = swsusp_write();
 		if (!error)
@@ -189,9 +189,9 @@ int pm_suspend_disk(void)
  Enable_cpus:
 	enable_nonboot_cpus();
  Resume_devices:
-	platform_finish();
 	device_resume();
 	resume_console();
+	platform_finish();
  Thaw:
 	unprepare_processes();
  Finish:
Index: linux-2.6.21-rc7/kernel/power/user.c
===================================================================
--- linux-2.6.21-rc7.orig/kernel/power/user.c
+++ linux-2.6.21-rc7/kernel/power/user.c
@@ -170,11 +170,11 @@ static inline int snapshot_suspend(int p
 	}
 	enable_nonboot_cpus();
  Resume_devices:
+	device_resume();
+	resume_console();
 	if (platform_suspend)
 		platform_finish();
 
-	device_resume();
-	resume_console();
  Finish:
 	mutex_unlock(&pm_mutex);
 	return error;
@@ -202,11 +202,11 @@ static inline int snapshot_restore(int p
 
 	enable_nonboot_cpus();
  Resume_devices:
+	device_resume();
+	resume_console();
 	if (platform_suspend)
 		platform_finish();
 
-	device_resume();
-	resume_console();
  Finish:
 	pm_restore_console();
 	mutex_unlock(&pm_mutex);
-
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