Re: Possible critical VIA vt82c686a chip bug (private question)

Yoann Vandoorselaere
2000-10-26T20:12:20Z

Vojtech Pavlik <vojtech@suse.cz> writes:

> On Thu, Oct 26, 2000 at 01:42:29PM -0400, Richard B. Johnson wrote:
>
> > > > ../drivers/block/ide.c, line 162, on version 2.2.17 does bad things
> > > > to the timer. It writes 0 to the control-word for timer 0. This
> > > > does the following:
> > [Snipped...]
> > >
> > > Well, at least on 2.4.0-test9, the above timing code is #ifed to
> > > DISK_RECOVERY_TIME > 0, which in turn is #defined to 0 in
> > > include/linux/ide.h.
> > >
> > > So this is not our problem here. Anyway I guess it's time to hunt for
> > > i8259 accesses in the kernel that lack the necessary spinlock, even when
> > > they're not probably the cause of the problem we see here.
> >
> > Okay, good.
>
> Ok, here is a list of places within the kernel that access the PIT
> timer, plus the method of locking (i386 arch only):

[...]

Ok, I just tested if the problem was always present without
the IDE subsystem...

The answer is it is not... so it isn't an IDE problem.

--
-- Yoann http://www.mandrakesoft.com/~yoann/
An engineer from NVidia, while asking him to release cards specs said :
"Actually, we do write our drivers without documentation."