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 <[email protected]> --- 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 db31cbb6e2c8..14c7d9d7d973 100644 --- a/arch/arm/mach-mvebu/pm.c +++ b/arch/arm/mach-mvebu/pm.c @@ -233,6 +233,7 @@ static int mvebu_pm_enter(suspend_state_t state) cpu_do_idle(); break; case PM_SUSPEND_MEM: + pr_warn("Entering suspend to RAM. Only special wake-up sources will resume the system\n"); return mvebu_enter_suspend(); default: return -EINVAL; -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
