From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 9 Dec 2010 23:16:39 +0000 (+0100)
Subject: PM / Hibernate: Fix PM_POST_* notification with user-space suspend
X-Git-Tag: firefly_0821_release~9833^2~71^2^2~120
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=91364cfb2f9bd6ec8d0a91989024f2010d2967b1;p=firefly-linux-kernel-4.4.55.git

PM / Hibernate: Fix PM_POST_* notification with user-space suspend

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@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/kernel/power/user.c b/kernel/power/user.c
index 1b2ea31e6bd8..c36c3b9e8a84 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -137,7 +137,7 @@ static int snapshot_release(struct inode *inode, struct file *filp)
 	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);