This is a note to let you know that I've just added the patch titled
cpuidle: mvebu: Fix the CPU PM notifier usage
to the 3.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cpuidle-mvebu-fix-the-cpu-pm-notifier-usage.patch
and it can be found in the queue-3.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 43b68879de27b1993518687fbc6013da80cdcbfe Mon Sep 17 00:00:00 2001
From: Gregory CLEMENT <[email protected]>
Date: Thu, 26 Feb 2015 18:20:48 +0100
Subject: cpuidle: mvebu: Fix the CPU PM notifier usage
From: Gregory CLEMENT <[email protected]>
commit 43b68879de27b1993518687fbc6013da80cdcbfe upstream.
As stated in kernel/cpu_pm.c, "Platform is responsible for ensuring
that cpu_pm_enter is not called twice on the same CPU before
cpu_pm_exit is called.". In the current code in case of failure when
calling mvebu_v7_cpu_suspend, the function cpu_pm_exit() is never
called whereas cpu_pm_enter() was called just before.
This patch moves the cpu_pm_exit() in order to balance the
cpu_pm_enter() calls.
Reported-by: Fulvio Benini <[email protected]>
Signed-off-by: Gregory CLEMENT <[email protected]>
Signed-off-by: Daniel Lezcano <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/cpuidle/cpuidle-mvebu-v7.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/cpuidle/cpuidle-mvebu-v7.c
+++ b/drivers/cpuidle/cpuidle-mvebu-v7.c
@@ -37,11 +37,11 @@ static int mvebu_v7_enter_idle(struct cp
deepidle = true;
ret = mvebu_v7_cpu_suspend(deepidle);
+ cpu_pm_exit();
+
if (ret)
return ret;
- cpu_pm_exit();
-
return index;
}
Patches currently in stable-queue which might be from
[email protected] are
queue-3.19/cpuidle-mvebu-fix-the-cpu-pm-notifier-usage.patch
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