linux-kernel - Re: [PATCH] EDAC: Remove the i82443bxgx

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Date:   Mon, 27 Aug 2018 20:30:23 +0100
From:   Tim Small <tim@...tersideup.com>
To:     Borislav Petkov <bp@...en8.de>, Takashi Iwai <tiwai@...e.de>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] EDAC: Remove the i82443bxgx_edac driver

On 27/08/18 17:45, Borislav Petkov wrote:
> Actually, looking at this driver more - it has been depending on
> BROKEN since 2007!

Hi,

I'd forgotten that it was in BROKEN state.

The issue was that the driver was fully functioning, but it clashed with
the graphics aperture driver - both use different registers within the
same PCI device - it was marked broken on the basis that the with the
kernel PCI device allocation code as it stood at the time, if the
i82443bxgx_edac driver was loaded first, the graphics aperture
configuration driver could not also be loaded, and this could break
existing setups.

As far as I remember, it was left was that Greg KH had said that he was
working on a change to the PCI device allocation code which would allow
both to coexist.  I don't know if that happened.

The last CPU which used these chipsets (130nm Pentium III) were released
in 2001.  I don't know when they were produced up until.

On that basis, I don't see a problem with removing it, but if there's a
preference for me to fix it, (and if I still have some old hardware
somewhere that I can test it on), I'll be happy to do that instead.

Tim.