linux-kernel - [PATCH -fix] swsusp: Make userland suspend work on SMP again

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Message-Id: <200610042226.43833.rjw@sisk.pl>
Date:	Wed, 4 Oct 2006 22:26:42 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Andrew Morton <akpm@...l.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, Pavel Machek <pavel@....cz>
Subject: [PATCH -fix] swsusp: Make userland suspend work on SMP again

Unfortunately one of the recent changes in swsusp has broken the userland
suspend on SMP.  Fix it.

Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
---
---
 kernel/power/user.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.18-mm3/kernel/power/user.c
===================================================================
--- linux-2.6.18-mm3.orig/kernel/power/user.c
+++ linux-2.6.18-mm3/kernel/power/user.c
@@ -149,10 +149,10 @@ static int snapshot_ioctl(struct inode *
 			error = freeze_processes();
 			if (error) {
 				thaw_processes();
+				enable_nonboot_cpus();
 				error = -EBUSY;
 			}
 		}
-		enable_nonboot_cpus();
 		up(&pm_sem);
 		if (!error)
 			data->frozen = 1;
-
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