From: Rob Herring <rob.herring@calxeda.com>
Date: Tue, 26 Feb 2013 22:16:53 +0000 (-0600)
Subject: cpuidle: calxeda: add cpu_pm_enter/exit calls
X-Git-Tag: upstream/snapshot3+hdmi~4048^2~11^2~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=34a5eeb202eb43f36dd39a287669e0b686ddf728;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

cpuidle: calxeda: add cpu_pm_enter/exit calls

Wnen powergating the core, we need to call cpu pm notifiers to save VFP
state (!SMP only) and resetting the breakpoint h/w.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-pm@vger.kernel.org
---

diff --git a/drivers/cpuidle/cpuidle-calxeda.c b/drivers/cpuidle/cpuidle-calxeda.c
index 3460584..bed707a 100644
--- a/drivers/cpuidle/cpuidle-calxeda.c
+++ b/drivers/cpuidle/cpuidle-calxeda.c
@@ -21,6 +21,7 @@
  */
 
 #include <linux/cpuidle.h>
+#include <linux/cpu_pm.h>
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/of.h>
@@ -66,8 +67,11 @@ static int calxeda_pwrdown_idle(struct cpuidle_device *dev,
 				struct cpuidle_driver *drv,
 				int index)
 {
+	cpu_pm_enter();
 	highbank_set_cpu_jump(smp_processor_id(), cpu_resume);
 	cpu_suspend(0, calxeda_idle_finish);
+	cpu_pm_exit();
+
 	return index;
 }