Disable EISA and probes

Jeffrey Walton noloader at gmail.com
Sat Sep 5 07:31:13 EDT 2020

On Sat, Sep 5, 2020 at 2:15 AM Greg KH <greg at kroah.com> wrote:
> On Fri, Sep 04, 2020 at 10:57:38PM -0400, Jeffrey Walton wrote:
> > Hi Everyone,
> >
> > I would like to disable EISA and its probes during boot. I found the
> > docs at https://www.kernel.org/doc/html/latest/driver-api/eisa.html,
> > but it does not discuss how to disable EISA or the probes.
> >
> > I also found https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1543919,
> > where folks are wondering why EISA is enabled by default nowadays. And
> > one person asks about a kernel option to disable it (like I am doing).
> >
> > I'd like to add a boot param like eisa=0 or eisa=off, but I suspect
> > it's not that easy. Looking at the three documented kernel parameters,
> > they all enable EISA and probes.
> >
> > How do I disable EISA and the probes?
> Build a kernel without EISA in it at all?  That's the simplest way as
> you must have some custom hardware that doesn't like this, so a
> custom-configuration seems like the best option.

Nothing custom. I just have modern hardware.

What's the purpose of including EISA by default? It has not been used
in 25 years.

> Did you try that and it did not work?  What is the problem of EISA at
> boot anyway?

No, I did not build a custom kernel. I was looking for kernel options
to disable it.

The machine is part of a distro.


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