Re: [PATCH] VIA timer fix was removed?

From: Vojtech Pavlik (vojtech@suse.cz)
Date: Mon Nov 12 2001 - 16:58:32 EST


On Mon, Nov 12, 2001 at 09:31:35PM +0000, Alan Cox wrote:

> > Attached (untested) patch against 21.2.20 (which still has the $SUBJECT
> > code) should implement timer=no-via686a option to disable this. Hopefully
> > I'll get it tested in the next day or two.
>
> This isnt the real problem - we are seeing it triggered by cases we dont
> underatand that seem to be software. We need to find those

I don't think it's software. At least it's definitely not locking. It's
happening on machines where none of the drivers missing the locks are
used (only ftape and analog joystick).

I think it's the old Neptune bug biting us again. I'd like to verify
this theory - do you have any list of people who've seen the VIA bugfix
triggered on non-VIA hardware? Some might be willing to test
experimental patches ...

... like the one attached. It doesn't add anything that already hasn't
been there, but:

        1) Should be safe for machines that have
           a different bug than VIA. It'll print a message
           but won't reset the timer if the > LATCH reading
           isn't persistent.

        2) Should printk enough data to shed some light
           on what is triggering the VIA check.

Patch against 2.4.15-pre4.

-- 
Vojtech Pavlik
SuSE Labs


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