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ARM: mvebu: Warn about the wake-up sources not taken into account in suspend 

On the Armada 370/XP/38x/39x SoCs when the suspend to ram feature is
supported, the SoCs are shutdown and will be woken up by an external
micro-controller, so there is no possibility to setup wake-up sources
from Linux. However, in standby mode, the SoCs stay powered and it is
possible to wake-up from any interrupt sources. Since when the users
configures the enabled wake-up sources there is no way to know if the
user will be doing suspend to RAM or standby, we just allow all
wake-up sources to be enabled, and only warn when entering suspend to
RAM

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

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
This commit is contained in:
Gregory CLEMENT 2015-07-03 13:55:53 +02:00
parent 3cbd6a6ca8
commit 482d638f98
1 changed files with 1 additions and 0 deletions
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1
arch/arm/mach-mvebu/pm.c
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@ -192,6 +192,7 @@ static int mvebu_pm_enter(suspend_state_t state)
cpu_do_idle(); cpu_do_idle();
break; break;
case PM_SUSPEND_MEM: case PM_SUSPEND_MEM:
pr_warn("Entering suspend to RAM. Only special wake-up sources will resume the system\n");
return mvebu_enter_suspend(); return mvebu_enter_suspend();
default: default:
return -EINVAL; return -EINVAL;