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Message-ID: <47D6874C.8050404@aol.com>
Date: Tue, 11 Mar 2008 14:21:16 +0100
From: Oliver Schuster <olivers137@....com>
To: linux-kernel@...r.kernel.org
CC: win@...ana.be
Subject: Re: [WATCHDOG] v2.5.25-rc patches
Hi,
WARNING
this patch can cause serious problems in the case, that someone use it with an it8712 rev. 8 and above.
You patch it8712f_wdt.c in function it8712f_wdt_update_margin(void):
...
+ 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 swaped -- historical reason.
I suggest to substitute
superio_outw(units, WDT_TIMEOUT);
with
superio_outb(units >> 8, WDT_TIMEOUT + 1);
superio_outb(units, WDT_TIMEOUT);
or to change the patch with (only the referenced position above)
+ if (revision >= 0x08)
+ superio_outb(units >> 8, WDT_TIMEOUT + 1);
+
+ superio_outb(units, WDT_TIMEOUT);
Regards,
Oliver
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