linux-kernel - Re: [WATCHDOG] v2.5.25-rc patches

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Date:	Tue, 11 Mar 2008 22:02:32 +0100
From:	Wim Van Sebroeck <wim@...ana.be>
To:	Oliver Schuster <olivers137@....com>,
	Andrew Paprocki <andrew@...iboo.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [WATCHDOG] v2.5.25-rc patches

Hi Oliver,

> this patch can cause serious problems in the case, that someone use it 
> with an it8712 rev. 8 and above.
...
> Your patch changes it8712f_wdt.c in function t8712f_wdt_update_margin():
> 
> >-	superio_outb((margin > 255) ? (margin / 60) : margin, WDT_TIMEOUT);
> >+	if (revision >= 0x08)
> >+		superio_outw(units, WDT_TIMEOUT);
> >+	else
> >+		superio_outb(units, WDT_TIMEOUT);
> 
> but here you can't use superio_outw, because the bytes are swapped 
> --historical reason.
> 
> I suggest to substitute
> 	superio_outw(units, WDT_TIMEOUT);
> with
> 	superio_outb(units >> 8, WDT_TIMEOUT + 1);
> 	superio_outb(units, WDT_TIMEOUT);
> 

Can you keep "Andrew Paprocki" <andrew@...iboo.com> in the loop?
Can you also create a patch and test it together with Andrew?
We need to make sure that we fix this before 2.6.25 is there.

Thanks,
Wim.

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