linux-kernel - [BUG] [linux-pm] Commit "Hibernation: Enter platform hibernation state in a consistent way)" makes my system to resume instantly from S4

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Date:	Sat, 27 Oct 2007 14:05:32 +0200
From:	Maxim Levitsky <maximlevitsky@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	pm list <linux-pm@...ts.linux-foundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: [BUG] [linux-pm] Commit "Hibernation: Enter platform hibernation state in a consistent way)" makes my system to resume instantly from S4

Hi,

Recently I noticed that my system resumes just after suspend to disk.

I traced this to commit 9cd9a0058dd35268b24fa16795a92c800f4086d4.

Note:

This happens only if I enable WOL using /proc/acpi/wakeup
(echo "ILAN" > /proc/acpi/wakeup)

and have 
"ACPI-Hibernate-erroneously-disabled-Suspend-wakeup" applied, since otherwise
all wake-up sources are disabled in S4.

Clearly the above commit confuses the BIOS.
Using latest -git with the above patch reverted makes everything work again fine.

Best regards,
	Maxim Levitsky
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