linux-kernel - Re: [3/5] 2.6.21-rc4: known regressions (v2)

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Message-Id: <1174891519.5550.36.camel@funkylaptop>
Date:	Mon, 26 Mar 2007 08:45:19 +0200
From:	Frédéric RISS <frederic.riss@...il.com>
To:	Adrian Bunk <bunk@...sta.de>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>, pavel@...e.cz,
	Tino Keitel <tino.keitel@....de>,
	Bob Moore <robert.moore@...el.com>, lenb@...nel.org,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [3/5] 2.6.21-rc4: known regressions (v2)

Le dimanche 25 mars 2007 à 23:34 +0200, Frédéric Riss a écrit :
> However, as I pointed out in the initial report, the MacMini doesn't
> come out of suspend to ram because a commit in another merged patchset
> broke it. I tracked it down to:
> 
> commit e9e2cdb412412326c4827fc78ba27f410d837e6e
> parent 79bf2bb335b85db25d27421c798595a2fa2a0e82 
> Author: Thomas Gleixner <tglx@...utronix.de>
> Date:   Fri Feb 16 01:28:04 2007 -0800
> 
>     [PATCH] clockevents: i386 drivers
>     
> This patch has already been mentioned in regression reports, but AFAICS
> not related to suspend issues.
> 
> To be totally clear about what works and what doesn't:
> 
> 79bf2bb335b85db25d27421c798595a2fa2a0e82 
>    + cherry-pick f3ccb06f3b8e0cf42b579db21f3ca7f17fcc3f38  ==> works
> 
> e9e2cdb412412326c4827fc78ba27f410d837e6e
>    + cherry-pick f3ccb06f3b8e0cf42b579db21f3ca7f17fcc3f38  ==> broken
> 
> To try to get more information, I commented the call to
> do_suspend_lowlevel in drivers/acpi/sleep/main.c and used
> CONFIG_DISABLE_CONSOLE_SUSPEND. Interestingly, the suspend/resume cycle
> completes correctly in this mode.

Additional data point: I just tried with -rc5 and the issue is still
present. The config I used for this test defines neither NO_HZ nor
HIGH_RES_TIMERS.

Fred.

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