This is a note to let you know that I've just added the patch titled
ACPI / Wakeup: Enable button GPEs unconditionally during initialization
to the 2.6.37-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
acpi-wakeup-enable-button-gpes-unconditionally-during-initialization.patch
and it can be found in the queue-2.6.37 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
From [email protected] Thu Feb 17 08:53:15 2011
From: "Rafael J. Wysocki" <[email protected]>
Date: Thu, 17 Feb 2011 10:34:41 +0100
Subject: ACPI / Wakeup: Enable button GPEs unconditionally during initialization
To: [email protected]
Cc: Greg KH <[email protected]>
Message-ID: <[email protected]>
From: Rafael J. Wysocki <[email protected]>
This is a backport of mainline kernel commit
2a5d24286e8bdafdc272b37ec5bdd9e977b3767c.
Commit 9630bdd (ACPI: Use GPE reference counting to support shared
GPEs) introduced a suspend regression where boxes resume immediately
after being suspended due to the lid or sleep button wakeup status
not being cleared properly. This happens if the GPEs corresponding
to those devices are not enabled all the time, which apparently is
expected by some BIOSes.
To fix this problem, enable button and lid GPEs unconditionally
during initialization and keep them enabled all the time, regardless
of whether or not the ACPI button driver is used.
References: https://bugzilla.kernel.org/show_bug.cgi?id=27372
Reported-and-tested-by: Ferenc Wágner <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/acpi/wakeup.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/acpi/wakeup.c
+++ b/drivers/acpi/wakeup.c
@@ -84,8 +84,12 @@ int __init acpi_wakeup_device_init(void)
struct acpi_device *dev = container_of(node,
struct acpi_device,
wakeup_list);
- if (dev->wakeup.flags.always_enabled)
+ if (dev->wakeup.flags.always_enabled) {
+ /* Button GPEs are supposed to be always enabled. */
+ acpi_enable_gpe(dev->wakeup.gpe_device,
+ dev->wakeup.gpe_number);
dev->wakeup.state.enabled = 1;
+ }
}
mutex_unlock(&acpi_device_lock);
return 0;
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.37/acpi-wakeup-enable-button-gpes-unconditionally-during-initialization.patch
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