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ACPI: clear GPE earily in resume to avoid warning

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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@intel.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Shaohua Li 2007-06-20 09:17:58 +08:00 committed by Len Brown
parent f4cb570076
commit a3627f67b1
1 changed files with 7 additions and 0 deletions
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7
drivers/acpi/sleep/main.c
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@ -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");