ACPI: suppress power button event on S3 resume
http://bugzilla.kernel.org/show_bug.cgi?id=6612
Note that this fix depends on a fix in ACPICA 20060608
to replace a semaphore with a spin-lock.
Signed-off-by: Arnaud Patard <apatard@mandriva.com>
Acked-by: "Yu, Luming" <luming.yu@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index 930427f..62ce87d 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -105,6 +105,14 @@
default:
return -EINVAL;
}
+
+ /* ACPI 3.0 specs (P62) says that it's the responsabilty
+ * of the OSPM to clear the status bit [ implying that the
+ * POWER_BUTTON event should not reach userspace ]
+ */
+ if (ACPI_SUCCESS(status) && (acpi_state == ACPI_STATE_S3))
+ acpi_clear_event(ACPI_EVENT_POWER_BUTTON);
+
local_irq_restore(flags);
printk(KERN_DEBUG "Back to C!\n");