Subject: ACPI: Disable all GPEs before re-enable interrupts.
From: Zhao Yakui <[EMAIL PROTECTED]>
Some wakeup gpes have no handler. If system is waked up by such GPE like
a USB hotplug, sometimes it will cause a lot of errors reporting that
the GPE has no handler .
Of course acpi_leave_sleep_state will disable and clear the GPE but it's
too late. It should be done before interrupt is re-enabled.
Signed-off-by: Li Shaohua <[EMAIL PROTECTED]>
Signed-off-by: Zhao Yakui <[EMAIL PROTECTED]>
---
drivers/acpi/sleep/main.c | 7 +++++++
1 file changed, 7 insertions(+)
Index: linux-2.6.24-rc2/drivers/acpi/sleep/main.c
===================================================================
--- linux-2.6.24-rc2.orig/drivers/acpi/sleep/main.c
+++ linux-2.6.24-rc2/drivers/acpi/sleep/main.c
@@ -146,6 +146,13 @@ static int acpi_pm_enter(suspend_state_t
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");
-
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