This is a note to let you know that I've just added the patch titled
ARM: cpuidle: Pass on arm_cpuidle_suspend()'s return value
to the 4.5-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:
arm-cpuidle-pass-on-arm_cpuidle_suspend-s-return-value.patch
and it can be found in the queue-4.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 625fe4f8ffc1b915248558481bb94249f6bd411c Mon Sep 17 00:00:00 2001
From: James Morse <james.morse@xxxxxxx>
Date: Tue, 26 Apr 2016 12:15:01 +0100
Subject: ARM: cpuidle: Pass on arm_cpuidle_suspend()'s return value
From: James Morse <james.morse@xxxxxxx>
commit 625fe4f8ffc1b915248558481bb94249f6bd411c upstream.
arm_cpuidle_suspend() may return -EOPNOTSUPP, or any value returned
by the cpu_ops/cpuidle_ops suspend call. arm_enter_idle_state() doesn't
update 'ret' with this value, meaning we always signal success to
cpuidle_enter_state(), causing it to update the usage counters as if we
succeeded.
Fixes: 191de17aa3c1 ("ARM64: cpuidle: Replace cpu_suspend by the common ARM/ARM64 function")
Signed-off-by: James Morse <james.morse@xxxxxxx>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Acked-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/cpuidle/cpuidle-arm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/cpuidle/cpuidle-arm.c
+++ b/drivers/cpuidle/cpuidle-arm.c
@@ -50,7 +50,7 @@ static int arm_enter_idle_state(struct c
* call the CPU ops suspend protocol with idle index as a
* parameter.
*/
- arm_cpuidle_suspend(idx);
+ ret = arm_cpuidle_suspend(idx);
cpu_pm_exit();
}
Patches currently in stable-queue which might be from james.morse@xxxxxxx are
queue-4.5/arm-cpuidle-pass-on-arm_cpuidle_suspend-s-return-value.patch
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