From: Arnd Bergmann <arnd@arndb.de>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [bisected][bug] commit e978aa7d7d57d04eb5f88 breaks suspend on laptop.
Date: Sat, 12 Nov 2011 03:41:12 +0000 [thread overview]
Message-ID: <201111120341.12473.arnd@arndb.de> (raw)
On Saturday, November 12, 2011, Rafael J. Wysocki wrote:
> If that's "acpi_idle", the appended patch should help (it works for
> me at least).
Hi Rafael,
I currently have limited email connectivity but I happened to bisect the
same bug and your patch fixes it for me. I am certainly on acpi_idle
with my thinkpad w500.
Sorry for breaking the email threading and dropping people from Cc.
> From: Rafael J. Wysocki <rjw@sisk.pl>
> Subject: ACPI / cpuidle: Remove acpi_idle_suspend (to fix suspend regression)
> After commit e978aa7d7d57d04eb5f88a7507c4fb98577def77 (cpuidle: Move
> dev->last_residency update to driver enter routine; remove
> dev->last_state) setting acpi_idle_suspend to 1 by
> acpi_processor_suspend() causes the ACPI cpuidle routines to return
> error codes continuously, which in turn causes cpuidle to lock up
> (hard). However, acpi_idle_suspend doesn't appear to be useful for
> any purpose (it's racy and doesn't really provide any real
> protection), so it can be removed, which makes the problem go away.
>
> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Arnd
next reply other threads:[~2011-11-12 3:41 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-12 3:41 Arnd Bergmann [this message]
2011-11-12 22:25 ` [bisected][bug] commit e978aa7d7d57d04eb5f88 breaks suspend on laptop Rafael J. Wysocki
2011-11-12 23:49 ` Linus Torvalds
2011-11-13 0:18 ` Rafael J. Wysocki
-- strict thread matches above, loose matches on Subject: below --
2011-11-11 16:01 Tomas M.
2011-11-11 20:46 ` Tomas M.
2011-11-11 21:26 ` Rafael J. Wysocki
2011-11-11 21:34 ` Tomas M.
2011-11-12 0:41 ` Rafael J. Wysocki
2011-11-12 1:50 ` Rafael J. Wysocki
2011-11-12 12:45 ` Ferenc Wagner
2011-11-12 22:14 ` Rafael J. Wysocki
2011-11-12 13:21 ` Tomas M.
2011-11-12 22:14 ` Rafael J. Wysocki
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