From: Shaohua Li <shaohua.li@xxxxxxxxx> Wakeup GPE hasn't a handler. If system is waked up by such GPE like a USB hotplug, I saw a lot of error reporting the GPE hasn't handler. acpi_leave_sleep_state will clear the GPE but it's too late, we should do it before interrupt is re-enabled. Signed-off-by: Shaohua Li <shaohua.li@xxxxxxxxx> Acked-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> --- drivers/acpi/sleep/main.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c index cbfa058..96d23b3 100644 --- a/drivers/acpi/sleep/main.c +++ b/drivers/acpi/sleep/main.c @@ -146,6 +146,13 @@ static int acpi_pm_enter(suspend_state_t pm_state) if (ACPI_SUCCESS(status) && (acpi_state == ACPI_STATE_S3)) acpi_clear_event(ACPI_EVENT_POWER_BUTTON); + /* + * Disable and clear GPE status before interrupt is enabled. Some GPEs + * (like wakeup GPE) haven't handler, this can avoid such GPE misfire. + * acpi_leave_sleep_state will reenable specific GPEs later + */ + acpi_hw_disable_all_gpes(); + local_irq_restore(flags); printk(KERN_DEBUG "Back to C!\n"); -- 1.5.4.rc5.16.gc0279 _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
