linux-kernel - Re: [Openipmi-developer] [PATCH 3/3] ipmi: Add timeout waiting for channel information

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Message-ID: <20201007184228.GH3038@minyard.net>
Date:   Wed, 7 Oct 2020 13:42:28 -0500
From:   Corey Minyard <minyard@....org>
To:     "Boehme, Markus" <markubo@...zon.de>
Cc:     "Park, Seongjae" <sjpark@...zon.com>,
        "arnd@...db.de" <arnd@...db.de>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Nuernberger, Stefan" <snu@...zon.de>,
        "openipmi-developer@...ts.sourceforge.net" 
        <openipmi-developer@...ts.sourceforge.net>,
        "Shah, Amit" <aams@...zon.de>
Subject: Re: [Openipmi-developer] [PATCH 3/3] ipmi: Add timeout waiting for
 channel information

On Thu, Sep 10, 2020 at 11:08:40AM +0000, Boehme, Markus via Openipmi-developer wrote:
> > > -                         && ipmi_version_minor(id) >= 5)) {
> > > -             unsigned int set;
> > > +     if (ipmi_version_major(id) == 1 && ipmi_version_minor(id) < 5) {
> > This is incorrect, it will not correctly handle IPMI 0.x BMCs.  Yes,
> > they exist.
> 
> Interesting! I wasn't aware of those. Searching the web doesn't turn up
> much and the spec doesn't mention them either. Are these pre-release
> implementations of the IPMI 1.0 spec or some kind of "IPMI light"?

There was an 0.9 version of the spec that some machines implemented.
It's not really a "light" version, it's just a really early version.  I
don't know how many machine out there still implement it, but I try to
keep them working if I can.

Thanks,

-corey

> 
> Markus