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

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/cpuidle/cpuidle-calxeda.c b/drivers/cpuidle/cpuidle-calxeda.c
index 346058479572..bed707ab6d6e 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;
 }