Re: 2.6.14-rc1 on ATI hangs when executing _STA and _INI methods

From: Chuck Ebbert
Date: Fri Sep 16 2005 - 18:39:29 EST


In-Reply-To: <Pine.LNX.4.58.0509141521370.26803@xxxxxxxxxxx>

On Wed, 14 Sep 2005 at 15:27:19 -0700 (PDT), Linus Torvalds wrote:

> > [PATCH] x86-64: i386/x86-64: Fix time going twice as fast problem on ATI Xpress chipsets
> >
> > Passing enable_timer_pin_1 as a kernel boot parameter doesn't help,
> > but this patch does:
>
> Ok. That patch has been one big pain, and was clearly totally half-baked.
> I think I'll disable the automated checks, since they are clearly wrong.

Well I never meant it to be merged, but Andi picked it up from Bugzilla
bug #3927, added some bugs of his own, then sent it on.

This bug was mine, though: just checking for vendor == ATI was a bad idea.
Current earlyquirk code actually looks at PCI bridges instead of host bridge,
so to get an accurate test I guess it needs to look at PCI dev 00:00.0 and
check both vendor and device ID. As new models come out they will have to
be added one by one.

With a real understanding of what's going on maybe this problem can be solved
reliably with generic code, but it's beyond me...
__
Chuck
Subliminal URL: www.sluggy.com/daily.php?date=050905
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