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

From: Daniel Lezcano
Date: Fri Sep 27 2013 - 04:45:48 EST


On 09/27/2013 04:24 AM, Rob Herring wrote:
From: Rob Herring <rob.herring@xxxxxxxxxxx>

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@xxxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Cc: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Cc: linux-pm@xxxxxxxxxxxxxxx

Acked-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>

Shouldn't this patch be the first in the series ?

---
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;
}




--
<http://www.linaro.org/> Linaro.org â Open source software for ARM SoCs

Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/