Commit 43b68879 authored Feb 26, 2015 by Gregory CLEMENT Committed by Daniel Lezcano Mar 13, 2015

cpuidle: mvebu: Fix the CPU PM notifier usage



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.

Cc: stable@vger.kernel.org
Reported-by: Fulvio Benini <fbf@libero.it>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

parent 9eccca08

drivers/cpuidle/cpuidle-mvebu-v7.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -37,11 +37,11 @@ static int mvebu_v7_enter_idle(struct cpuidle_device *dev,
		deepidle = true;

		ret = mvebu_v7_cpu_suspend(deepidle);
		cpu_pm_exit();

		if (ret)
		return ret;

		cpu_pm_exit();

		return index;
		}