linux-kernel - Re: [WATCHDOG] iTCO_wdt.c - ICH9 reboot issue

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Date:	Mon, 15 Jun 2009 20:58:37 +0100
From:	Rui Santos <rsantos@...popie.com>
To:	Wim Van Sebroeck <wim@...ana.be>
CC:	Stephen Clark <sclark46@...thlink.net>,
	Denys Fedoryschenko <denys@...p.net.lb>,
	Johannes Dewender <arch@...nyjd.net>,
	"Rafael J. Wysocki" <rjw@...k.pl>, Frans Pop <elendil@...net.nl>,
	Rutger Nijlunsing <bugzilla.kernel@....tmfweb.nl>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Andriy Gapon <avg@...b.net.ua>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [WATCHDOG] iTCO_wdt.c - ICH9 reboot issue - testing wanted

Wim Van Sebroeck wrote:
> Hi Rui,
>   

Hi Wim,

>   
>> With your patch, the Intel DG35EC board will not allow my distribution
>> reboot or halt the machine. In order to circumvent that problem, I've
>> made a few addition to your previous patch witch allows the restore of
>> the changed Bit 0 to it's previous value if the module is unloaded.
>> My only doubt is if it should be done every time the gbl_smi_en is zero,
>> or in conjunction with nowayout when the value also equals zero. This
>> patch has what I described and a commented gbl_smi_en only.
>>     
>
> Forget the previous patch. I don't like having this hack in the main iTCO_wdt code.
> So I added it to the iTCO_vendor_support code with the necessary warnings.
> Can you test this (please note that the iTCO_vendor_support module needs to be
> loaded with the vendorsupport=911 module parameter).
>   

It's working like a charm. Also, the Bit 0 is changed to its original
value, so all reboots work.
I've tested on 2.6.30 and 2.6.27 ( with a few mods... ).

> Thanks in advance,
>   

Thank you,

> Wim.
>   

Rui

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