linux-kernel - [PATCH] Fix pm_notifiers during user mode hibernation

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Message-ID: <20090204091509.9383.43143.stgit@cooker.net>
Date:	Wed, 04 Feb 2009 12:15:37 +0300
From:	Andrey Borzenkov <arvidjaar@...l.ru>
To:	linux-pm@...ts.linux-foundation.org, rjw@...k.pl
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] Fix pm_notifiers during user mode hibernation

Snapshot device is opened with O_RDONLY during suspend and
O_WRONLY durig resume. Make sure we also call notifiers with
correct parameter telling them what we are really doing.

Signed-off-by: Andrey Borzenkov <arvidjaar@...l.ru>

---

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

diff --git a/kernel/power/user.c b/kernel/power/user.c
index 005b93d..6c85359 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -95,15 +95,15 @@ static int snapshot_open(struct inode *inode, struct file *filp)
 		data->swap = swsusp_resume_device ?
 			swap_type_of(swsusp_resume_device, 0, NULL) : -1;
 		data->mode = O_RDONLY;
-		error = pm_notifier_call_chain(PM_RESTORE_PREPARE);
+		error = pm_notifier_call_chain(PM_HIBERNATION_PREPARE);
 		if (error)
-			pm_notifier_call_chain(PM_POST_RESTORE);
+			pm_notifier_call_chain(PM_POST_HIBERNATION);
 	} else {
 		data->swap = -1;
 		data->mode = O_WRONLY;
-		error = pm_notifier_call_chain(PM_HIBERNATION_PREPARE);
+		error = pm_notifier_call_chain(PM_RESTORE_PREPARE);
 		if (error)
-			pm_notifier_call_chain(PM_POST_HIBERNATION);
+			pm_notifier_call_chain(PM_POST_RESTORE);
 	}
 	if (error)
 		atomic_inc(&snapshot_device_available);

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