[PATCH 2/6] cpuidle: calxeda: add cpu_pm_enter/exit calls

[Rob Herring <robherring2@gmail.com>]

From: Rob Herring <rob.herring@calxeda.com>

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>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-pm@vger.kernel.org
---
 drivers/cpuidle/cpuidle-calxeda.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/cpuidle/cpuidle-calxeda.c b/drivers/cpuidle/cpuidle-calxeda.c
index 01cfecf3..b04767a 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/of.h>
 #include <asm/cpuidle.h>
@@ -39,7 +40,10 @@ static int calxeda_pwrdown_idle(struct cpuidle_device *dev,
 				struct cpuidle_driver *drv,
 				int index)
 {
+	cpu_pm_enter();
 	cpu_suspend(0, calxeda_idle_finish);
+	cpu_pm_exit();
+
 	return index;
 }
 
-- 
1.8.1.2