From ed206fac87d65917280b6c3edd3f01125d4095c9 Mon Sep 17 00:00:00 2001
From: Zhang Rui <rui.zhang@intel.com>
Date: Mon, 27 Oct 2008 14:01:02 -0700
Subject: ACPI: bugfix reporting of event handler status
Introduce a new flag showing whether the event has an event handler/method.
For all the GPEs and Fixed Events,
1. ACPI_EVENT_FLAG_HANDLE is cleared, it's an "invalid" ACPI event.
2. Both ACPI_EVENT_FLAG_HANDLE and ACPI_EVENT_FLAG_DISABLE are set,
it's "disabled".
3. Both ACPI_EVENT_FLAG_HANDLE and ACPI_EVENT_FLAG_ENABLE are set,
it's "enabled".
4. Both ACPI_EVENT_FLAG_HANDLE and ACPI_EVENT_FLAG_WAKE_ENABLE are set,
it's "wake_enabled".
Among other things, this prevents incorrect reporting of ACPI events
as being "invalid" when it's really just (temporarily) "disabled".
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Len Brown <len.brown@intel.com>
---
Documentation/ABI/testing/sysfs-firmware-acpi | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
(limited to 'Documentation/ABI/testing/sysfs-firmware-acpi')
diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi
index f27be7d1a49f..e8ffc70ffe12 100644
--- a/Documentation/ABI/testing/sysfs-firmware-acpi
+++ b/Documentation/ABI/testing/sysfs-firmware-acpi
@@ -89,7 +89,7 @@ Description:
error - an interrupt that can't be accounted for above.
- invalid: it's either a wakeup GPE or a GPE/Fixed Event that
+ invalid: it's either a GPE or a Fixed Event that
doesn't have an event handler.
disable: the GPE/Fixed Event is valid but disabled.
@@ -117,30 +117,30 @@ Description:
and other user space applications so that the machine won't shutdown
when pressing the power button.
# cat ff_pwr_btn
- 0
+ 0 enabled
# press the power button for 3 times;
# cat ff_pwr_btn
- 3
+ 3 enabled
# echo disable > ff_pwr_btn
# cat ff_pwr_btn
- disable
+ 3 disabled
# press the power button for 3 times;
# cat ff_pwr_btn
- disable
+ 3 disabled
# echo enable > ff_pwr_btn
# cat ff_pwr_btn
- 4
+ 4 enabled
/*
* this is because the status bit is set even if the enable bit is cleared,
* and it triggers an ACPI fixed event when the enable bit is set again
*/
# press the power button for 3 times;
# cat ff_pwr_btn
- 7
+ 7 enabled
# echo disable > ff_pwr_btn
# press the power button for 3 times;
# echo clear > ff_pwr_btn /* clear the status bit */
# echo disable > ff_pwr_btn
# cat ff_pwr_btn
- 7
+ 7 enabled
--
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