diff options
Diffstat (limited to 'drivers/acpi/sleep.c')
-rw-r--r-- | drivers/acpi/sleep.c | 63 |
1 files changed, 46 insertions, 17 deletions
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 439880629839..bb1ae400ec1f 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -982,29 +982,47 @@ static int acpi_s2idle_prepare_late(void) static void acpi_s2idle_sync(void) { - /* - * The EC driver uses the system workqueue and an additional special - * one, so those need to be flushed too. - */ + /* The EC driver uses special workqueues that need to be flushed. */ acpi_ec_flush_work(); acpi_os_wait_events_complete(); /* synchronize Notify handling */ } -static void acpi_s2idle_wake(void) +static bool acpi_s2idle_wake(void) { - /* - * If IRQD_WAKEUP_ARMED is set for the SCI at this point, the SCI has - * not triggered while suspended, so bail out. - */ - if (!acpi_sci_irq_valid() || - irqd_is_wakeup_armed(irq_get_irq_data(acpi_sci_irq))) - return; + if (!acpi_sci_irq_valid()) + return pm_wakeup_pending(); + + while (pm_wakeup_pending()) { + /* + * If IRQD_WAKEUP_ARMED is set for the SCI at this point, the + * SCI has not triggered while suspended, so bail out (the + * wakeup is pending anyway and the SCI is not the source of + * it). + */ + if (irqd_is_wakeup_armed(irq_get_irq_data(acpi_sci_irq))) + return true; + + /* + * If the status bit of any enabled fixed event is set, the + * wakeup is regarded as valid. + */ + if (acpi_any_fixed_event_status_set()) + return true; + + /* + * If the status bit is set for any enabled GPE other than the + * EC one, the wakeup is regarded as a genuine one. + */ + if (acpi_ec_other_gpes_active()) + return true; + + /* + * If the EC GPE status bit has not been set, the wakeup is + * regarded as a spurious one. + */ + if (!acpi_ec_dispatch_gpe()) + return false; - /* - * If there are EC events to process, the wakeup may be a spurious one - * coming from the EC. - */ - if (acpi_ec_dispatch_gpe()) { /* * Cancel the wakeup and process all pending events in case * there are any wakeup ones in there. @@ -1017,8 +1035,19 @@ static void acpi_s2idle_wake(void) acpi_s2idle_sync(); + /* + * The SCI is in the "suspended" state now and it cannot produce + * new wakeup events till the rearming below, so if any of them + * are pending here, they must be resulting from the processing + * of EC events above or coming from somewhere else. + */ + if (pm_wakeup_pending()) + return true; + rearm_wake_irq(acpi_sci_irq); } + + return false; } static void acpi_s2idle_restore_early(void) |