linux-kernel - ACPI: resolve GPE immediate wakeup regression

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <45F58707.1@madrabbit.org>
Date:	Mon, 12 Mar 2007 12:59:51 -0400
From:	Ray Lee <ray-lk@...rabbit.org>
To:	Len Brown <lenb@...nel.org>
Cc:	Adrian Bunk <bunk@...sta.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Alexey Starikovskiy <alexey.y.starikovskiy@...ux.intel.com>,
	Vladimir Lebedev <vladimir.p.lebedev@...el.com>,
	linux-acpi@...r.kernel.org
Subject: ACPI: resolve GPE immediate wakeup regression

Len Brown wrote:
> On Saturday 10 March 2007 01:18, Ray Lee wrote:
>> Ray Lee wrote:
>>> In 2.6.21-rc1,2,3, my laptop will fully suspend to ram, but then
>>> *immediately* resumes back from suspension. (It resumes just fine, as well.)
>> [...]
>>> HP/Compaq NX6125 system, AMD64, dmesg attached.
> 
> I'd rather not break the Acer, if possible.
> 
> Ray, Please test the incremental patch below.

Tested and Alexey's patch (copied below) fixes the problem. I added a
signed-off-by just in case; feel free to yank it if inappropriate.
Regardless, please apply.

Thanks Len, Alexey.

Ray
---
Subject: ACPI: resolve GPE immediate wakeup regression
From: Alexey Starikovskiy <alexey.y.starikovskiy@...ux.intel.com>

Removing disabling of GPEs from enter_sleep function causes regression
on nx6125.
Doing disable_all_gpes both in prepare to sleep and in enter sleep
resolves regression,
while still fixes Acer notebooks.

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@...ux.intel.com>
Signed-off-by: Len Brown <len.brown@...el.com>
Signed-off-by: Ray Lee <ray-lk@...rabbit.org>
---

 drivers/acpi/hardware/hwsleep.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/acpi/hardware/hwsleep.c
b/drivers/acpi/hardware/hwsleep.c
index 8fa9312..c84b1fa 100644
--- a/drivers/acpi/hardware/hwsleep.c
+++ b/drivers/acpi/hardware/hwsleep.c
@@ -300,6 +300,11 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8
sleep_state)
 	/*
 	 * 2) Enable all wakeup GPEs
 	 */
+	status = acpi_hw_disable_all_gpes();
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
+
 	acpi_gbl_system_awake_and_running = FALSE;

 	status = acpi_hw_enable_all_wakeup_gpes();


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/