Date: Mon, 26 Aug 2002 11:18:36 +1000 (EST) From: Bruce Evans <bde@zeta.org.au> To: "David O'Brien" <obrien@FreeBSD.ORG> Cc: Mike Barcroft <mike@FreeBSD.ORG>, Craig Rodrigues <rodrigc@attbi.com>, <freebsd-current@FreeBSD.ORG> Subject: Re: Question about device.hints man page Message-ID: <20020826110535.K705-100000@gamplex.bde.org> In-Reply-To: <20020825200236.GB82354@dragon.nuxi.com>
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On Sun, 25 Aug 2002, David O'Brien wrote:
> On Sun, Aug 25, 2002 at 12:43:44PM -0400, Mike Barcroft wrote:
> > Craig Rodrigues <rodrigc@attbi.com> writes:
> > > device.hints.5:
> > > $FreeBSD: src/share/man/man5/device.hints.5,v 1.3 2002/08/09 06:07:33 obrien Exp $
> > > I would like to submit the following trivial patch:
> > >
> > >
> > > --- device.hints.5.orig Sun Aug 25 12:52:02 2002
> > > +++ device.hints.5 Sun Aug 25 12:52:26 2002
> > > @@ -145,7 +145,7 @@
> > >
> > > The following example disables the ACPI driver
> > > .Bd -literal -offset indent
> > > -hint.acpi.0.disable="1"
> > > +hint.acpi.0.disabled="1"
> > > .Ed
> > > .\" .Pp
> > > .\" A control variable may look like:
> >
> >
> > Committed, thanks.
>
> Uh WAIT! Was this tested?!?
> $ grep disable /sys/boot/i386/libi386/i386_module.c
> if ((getenv("acpi_load") && !getenv("hint.acpi.0.disable"))) {
>
> "hint.acpi.0.disable=1" certainly did not load the acpi.ko module for me
> (as expected by inspecting the code). I'm backing this commit out
> someone can prove it is proper.
It seems to be proper for disabling acpi itself (see dev/acpica/acpi.c)
but not its loading. So to fully disable acpica, you have to do something
like:
hint.acpi.0.disable="I prefer not to use code that (mis)uses !getenv()"
hint.acpi.0.disabled="1"
Bruce
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