[PATCH 5/5] ARM: mvebu: Warn about the wake-ups sources not taken into account in suspend

Gregory CLEMENT
2015-03-30T14:04:38Z

On the Armada 370/XP/38x/39x SoCs when the suspend to ram feature is
supported, the SoC is shutdown and will be wake up by an external
micro-controller, so there is no possibility to setup wake-up source
from Linux. However, in standby mode, as the SoC stay powered and it is
possible to wake-up from any interrupt sources. As when user decide to
setup a wake-up source, there is no way to know if they are wake-up
source from suspend or from standby, then we chose allowing to setup
all the interrupt as wake-up source.

The purpose of this patch is to inform the user that in suspend to ram
mode, the wake source won't be taken into consideration.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
---
arch/arm/mach-mvebu/pm.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-mvebu/pm.c b/arch/arm/mach-mvebu/pm.c
index 547310230edd..94966f1e4b14 100644
--- a/arch/arm/mach-mvebu/pm.c
+++ b/arch/arm/mach-mvebu/pm.c
@@ -176,6 +176,7 @@ static int mvebu_pm_enter(suspend_state_t state)
cpu_do_idle();
break;
case PM_SUSPEND_MEM:
+ pr_warn("None of the wakeup sources will be taken into account in suspend to ram\n");
mvebu_enter_suspend();
default:
return -EINVAL;
--
2.1.0