The patch titled
swsusp: fix hibernation code ordering
has been added to the -mm tree. Its filename is
swsusp-fix-hibernation-code-ordering.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: swsusp: fix hibernation code ordering
From: Rafael J. Wysocki <rjw@xxxxxxx>
Change the code ordering so that hibernation_ops->prepare() is called after
device_suspend(). This is needed so that we don't violate the ACPI
specification, which states that the _PTS and _GTS system-control methods,
executed from acpi_sleep_prepare(), ought to be called after devices have been
put in low power states.
The "Finish" label in hibernation_restore() is moved, because device_suspend()
resumes devices if the suspending of them fails and the restore code ordering
should reflect the hibernation code ordering.
Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx>
Acked-by: Pavel Machek <pavel@xxxxxx>
Cc: Nigel Cunningham <nigel@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/power/disk.c | 14 +++++++-------
1 files changed, 7 insertions(+), 7 deletions(-)
diff -puN kernel/power/disk.c~swsusp-fix-hibernation-code-ordering kernel/power/disk.c
--- a/kernel/power/disk.c~swsusp-fix-hibernation-code-ordering
+++ a/kernel/power/disk.c
@@ -133,15 +133,15 @@ int hibernation_snapshot(int platform_mo
/* Free memory before shutting down devices. */
error = swsusp_shrink_memory();
if (error)
- goto Finish;
-
- error = platform_prepare(platform_mode);
- if (error)
- goto Finish;
+ return error;
suspend_console();
error = device_suspend(PMSG_FREEZE);
if (error)
+ goto Resume_console;
+
+ error = platform_prepare(platform_mode);
+ if (error)
goto Resume_devices;
error = disable_nonboot_cpus();
@@ -159,8 +159,8 @@ int hibernation_snapshot(int platform_mo
Resume_devices:
platform_finish(platform_mode);
device_resume();
+ Resume_console:
resume_console();
- Finish:
return error;
}
@@ -191,8 +191,8 @@ int hibernation_restore(int platform_mod
enable_nonboot_cpus();
}
platform_restore_cleanup(platform_mode);
- Finish:
device_resume();
+ Finish:
resume_console();
pm_restore_console();
return error;
_
Patches currently in -mm which might be from rjw@xxxxxxx are
at91-fix-enable-disable_irq_wake-symmetry-in-pcmcia-driver.patch
freezer-run-show_state-when-freezing-times-out.patch
pm-do-not-require-dev-spew-to-get-pm_debug.patch
swsusp-remove-incorrect-code-from-userc.patch
swsusp-remove-code-duplication-between-diskc-and-userc.patch
swsusp-introduce-restore-platform-operations.patch
swsusp-fix-hibernation-code-ordering.patch
add-suspend-related-notifications-for-cpu-hotplug-statistics.patch
shrink_slab-handle-bad-shrinkers.patch
-
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