linux-kernel - [PATCH 14/23] PM / Hibernate: Fix PM_POST_* notification with user-space suspend

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Message-Id: <20110206232253.124757327@pcw.home.local>
Date:	Mon, 07 Feb 2011 00:23:06 +0100
From:	Willy Tarreau <w@....eu>
To:	linux-kernel@...r.kernel.org, stable@...nel.org,
	stable-review@...nel.org
Cc:	Takashi Iwai <tiwai@...e.de>, "Rafael J. Wysocki" <rjw@...k.pl>,
	Greg Kroah-Hartman <gregkh@...e.de>, Willy Tarreau <w@....eu>
Subject: [PATCH 14/23] PM / Hibernate: Fix PM_POST_* notification with user-space suspend

2.6.27.58-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Takashi Iwai <tiwai@...e.de>

commit 1497dd1d29c6a53fcd3c80f7ac8d0e0239e7389e upstream.

The user-space hibernation sends a wrong notification after the image
restoration because of thinko for the file flag check.  RDONLY
corresponds to hibernation and WRONLY to restoration, confusingly.

Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
Signed-off-by: Willy Tarreau <w@....eu>

---
 kernel/power/user.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: longterm-2.6.27/kernel/power/user.c
===================================================================
--- longterm-2.6.27.orig/kernel/power/user.c	2011-01-29 11:19:14.719063850 +0100
+++ longterm-2.6.27/kernel/power/user.c	2011-01-29 11:27:16.799064365 +0100
@@ -129,7 +129,7 @@
 	free_all_swap_pages(data->swap);
 	if (data->frozen)
 		thaw_processes();
-	pm_notifier_call_chain(data->mode == O_WRONLY ?
+	pm_notifier_call_chain(data->mode == O_RDONLY ?
 			PM_POST_HIBERNATION : PM_POST_RESTORE);
 	atomic_inc(&snapshot_device_available);
 


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