linux-kernel - [250/264] PM / Suspend: Off by one in pm

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Date:	Wed, 09 Nov 2011 13:34:57 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Dan Carpenter <dan.carpenter@...cle.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: [250/264] PM / Suspend: Off by one in pm_suspend()

3.1-stable review patch.  If anyone has any objections, please let me know.

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

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 528f7ce6e439edeac38f6b3f8561f1be129b5e91 upstream.

In enter_state() we use "state" as an offset for the pm_states[]
array.  The pm_states[] array only has PM_SUSPEND_MAX elements so
this test is off by one.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>


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

--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -315,7 +315,7 @@ int enter_state(suspend_state_t state)
  */
 int pm_suspend(suspend_state_t state)
 {
-	if (state > PM_SUSPEND_ON && state <= PM_SUSPEND_MAX)
+	if (state > PM_SUSPEND_ON && state < PM_SUSPEND_MAX)
 		return enter_state(state);
 	return -EINVAL;
 }


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