This is a note to let you know that I've just added the patch titled
PM / Hibernate: Fix ioctl SNAPSHOT_S2RAM
to the 2.6.38-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pm-hibernate-fix-ioctl-snapshot_s2ram.patch
and it can be found in the queue-2.6.38 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 36cb7035ea0c11ef2c7fa2bbe0cd181b23569b29 Mon Sep 17 00:00:00 2001
From: Rafael J. Wysocki <[email protected]>
Date: Tue, 10 May 2011 21:10:13 +0200
Subject: PM / Hibernate: Fix ioctl SNAPSHOT_S2RAM
From: Rafael J. Wysocki <[email protected]>
commit 36cb7035ea0c11ef2c7fa2bbe0cd181b23569b29 upstream.
The SNAPSHOT_S2RAM ioctl used for implementing the feature allowing
one to suspend to RAM after creating a hibernation image is currently
broken, because it doesn't clear the "ready" flag in the struct
snapshot_data object handled by it. As a result, the
SNAPSHOT_UNFREEZE doesn't work correctly after SNAPSHOT_S2RAM has
returned and the user space hibernate task cannot thaw the other
processes as appropriate. Make SNAPSHOT_S2RAM clear data->ready
to fix this problem.
Tested-by: Alexandre Felipe Muller de Souza <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
kernel/power/user.c | 1 +
1 file changed, 1 insertion(+)
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -381,6 +381,7 @@ static long snapshot_ioctl(struct file *
* PM_HIBERNATION_PREPARE
*/
error = suspend_devices_and_enter(PM_SUSPEND_MEM);
+ data->ready = 0;
break;
case SNAPSHOT_PLATFORM_SUPPORT:
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.38/pm-fix-warning-in-pm_restrict_gfp_mask-during-snapshot_s2ram-ioctl.patch
queue-2.6.38/pm-hibernate-make-snapshot_release-restore-gfp-mask.patch
queue-2.6.38/pm-hibernate-fix-ioctl-snapshot_s2ram.patch
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