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From: Ferenc Wagner <wferi@niif.hu>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: linux-pm@lists.linux-foundation.org,
        Deepthi Dharwar <deepthi@linux.vnet.ibm.com>,
        linux-kernel@vger.kernel.org
Subject: Re: [linux-pm] e978aa7d (cpuidle: Move dev->last_residency update...) broke suspend
References: <874nyadwef.fsf@tac.ki.iif.hu> <201111120218.17758.rjw@sisk.pl>
Date: Sat, 12 Nov 2011 13:42:21 +0100
In-Reply-To: <201111120218.17758.rjw@sisk.pl> (Rafael J. Wysocki's message of
	"Sat, 12 Nov 2011 02:18:17 +0100")
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"Rafael J. Wysocki" <rjw@sisk.pl> writes:

> On Saturday, November 12, 2011, Ferenc Wagner wrote:
>> Hi,
>> 
>> Since e978aa7d (cpuidle: Move dev->last_residency update to driver
>> enter routine; remove dev->last_state) my ThinkPad R50e can't suspend
>> anymore, it just freezes instead.  I controlled git bisect by booting
>> with break=top and issuing 'echo mem >/sys/power/state'.  My config is
>> attached.
>
> What's the output of "cat /sys/devices/system/cpu/cpuidle/current_driver" ?

acpi_idle.

Your patch (ACPI / cpuidle: Remove acpi_idle_suspend) fixes the problem
for me.  Amazing turnaround, really!
-- 
Thanks,
Feri.