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

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Date:	Fri, 05 Jun 2009 19:46:14 +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 All,
>   
Hi Wim, Hi All,
> I'm looking for people that can test the below patch(es).
> I'm mainly interested in knowing if you experience any side-effects when using this patch.
> (See also bugzilla 9868, 10195, 12363 & 12162).
>
> For people not using the watchdog or without any reboot problems the driver should
> work as normal after compilation/installation/...
>
> For people that have the ICH9 reboot problems: load the module with module-parameter
> gbl_smi_en=0 and test the watchdog functionality again.
>   

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.

Can anyone share his/her thoughts on this matter.

> Thanks in advance,
> Wim.
>   
Regards,
Rui


View attachment "linux-2.6.30-rc8-watchdog.patch" of type "text/x-patch" (2785 bytes)